CN219660176U - Power supply wall box with automatic detection and protection functions - Google Patents
Power supply wall box with automatic detection and protection functions Download PDFInfo
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- CN219660176U CN219660176U CN202320206597.XU CN202320206597U CN219660176U CN 219660176 U CN219660176 U CN 219660176U CN 202320206597 U CN202320206597 U CN 202320206597U CN 219660176 U CN219660176 U CN 219660176U
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 230000001012 protector Effects 0.000 claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 19
- 230000001629 suppression Effects 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 2
- 102100031786 Adiponectin Human genes 0.000 claims 5
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- 238000005070 sampling Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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Abstract
The utility model belongs to the technical field of power detection, and particularly relates to a power wall box with automatic detection and protection functions, wherein a control board, an electric leakage circuit breaker, a power surge protector, an in-cabin and out-of-cabin buzzer, an input interface, an output interface, a testing ground and a protection ground binding post are arranged in a bottom shell; the rear sides of the residual current circuit breaker and the power surge protector are provided with brackets, and an AC/DC power module, a filter and a solid relay are arranged on the brackets; the top cover is arranged on the bottom shell, an instant suppression diode is added between the sensitive pin of the sensitive device of the control board and the power supply ground, a coil magnetic bead is added at the circuit inlet, the control board is connected with the test ground and the protection ground inlet in parallel, the input interface is connected with the leakage circuit breaker, the leakage circuit breaker is connected with the power supply surge protector, the filter is connected with the power supply surge protector in parallel, and the AC/DC power module, the control board and the solid relay are connected in series, so that the problems that failure and error are caused when the detection is carried out under the interference of strong electromagnetic pulse, electrostatic discharge and the like in the complex electromagnetic environment are avoided.
Description
Technical Field
The utility model belongs to the technical field of power supply detection, and particularly relates to a power supply wall box with automatic detection and protection functions.
Background
Large-scale electronic facilities and equipment are various and widely applied, and various types of electric components are usually integrated in the large-scale electronic facilities and equipment to complete specific functions, and the power supply input of the facilities and equipment is most commonly alternating current 220V/50Hz commercial power, but in some special environments, remote areas and densely populated towns, the high-quality power supply quality cannot be always maintained due to the restriction of various factors such as electromagnetic environments, power supply equipment, power utilization frequency, meteorological conditions and the like. The existing equipment has the functions of detecting overvoltage, overcurrent, electric leakage and the like of an alternating current power supply, but when the equipment encounters interference such as strong electromagnetic pulse, electrostatic discharge and the like under a complex electromagnetic environment and when the equipment is used under severe weather environment conditions, the detection can fail and fail, the normal work of electronic facilities and equipment can be influenced, and even safety accidents in the aspects of personnel and equipment can be caused.
Disclosure of Invention
The utility model aims to provide a power supply wall box with automatic detection and protection functions, which solves the problems that detection can fail and fail when interference such as strong electromagnetic pulse and electrostatic discharge is encountered under a complex electromagnetic environment and when the power supply wall box is used under severe weather environment conditions, and avoids safety accidents.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the power supply wall box is usually mounted on a cabin wall part of the communication vehicle, the outer surface of the bottom shell is exposed outside the cabin, and the side surface and the top cover are exposed in the cabin.
The utility model provides a power wall box that possesses automated inspection and protect function, includes drain pan, control panel, electric leakage circuit breaker, power surge protector, warning indicator, power output interface, cabin buzzer, cabin protection ground terminal, cabin external buzzer, silence button, power input interface, test ground terminal, protection ground terminal, top cap, AC\DC power module, wave filter, solid relay, support and rubber ring, control panel, electric leakage circuit breaker, power surge protector, warning indicator, cabin buzzer, cabin external buzzer, silence button, power input interface, power output interface, test ground terminal and protection ground terminal are equipped with in the drain pan; the power supply output interface, the cabin buzzer and the cabin protective ground binding post are positioned at the top end of the bottom shell, the alarm indicator lamp is positioned above the bottom shell, the control board is positioned at the right side below the bottom shell, the test ground binding post and the protective ground binding post are positioned at the left side below the bottom shell, the power supply input interface is positioned above the protective ground binding post, the cabin buzzer and the mute button are positioned at the left side below the alarm indicator lamp, the residual current circuit breaker and the power surge protector are positioned at the right side below the alarm indicator lamp, a bracket is arranged at the rear sides of the residual current circuit breaker and the power surge protector, and an AC/DC power module, a filter and a solid relay are arranged on the bracket; the rubber ring I is arranged between the bottom shell and the leakage breaker and between the rubber ring I and the power surge protector, and has a sealing effect; the second rubber ring is arranged between the bottom shell and the top cover to play a role in sealing and conducting connection; the top cover is arranged on the bottom shell; the power supply input interface is connected with the residual current circuit breaker, the power supply surge protector is connected with the output end of the residual current circuit breaker and the input end of the filter in parallel, the NPE end of the power supply surge protector is connected with the protective ground binding post, the output end of the filter is connected with the AC/DC power supply module in series, the AC/DC power supply module is connected with the control board to provide +5V and +12V direct current power supply for the AC/DC power supply module, the control board is connected with the control end of the solid relay in a control mode to control the on-off of the solid relay, the solid relay is connected with the output interface of the power supply to control the output of the power supply, and the binding post of the test ground and the protective ground is connected with the sampling end of the control board to monitor the grounding condition of the control board.
Further, a resistor, an instant suppression diode and a capacitor are added at a sensitive pin of a sensitive device of the control board so as to absorb large current to the ground during electrostatic discharge; an instant suppression diode is added between a sensitive pin of a sensitive device of the control board and a power supply ground, a proper coil magnetic bead is added at a circuit inlet, the impedance of a path flowing to a circuit board is improved, and a large filter capacitor and a small filter capacitor are connected in parallel at the test ground and the protective ground inlet of the control board so as to eliminate high-frequency interference, low-frequency interference and the like.
Further, a resistor R37, an instant suppression diode V5, a capacitor C31, a capacitor C34 and a capacitor C35 are added at the positions from the sensitive pin 3 (CKL) to the pin 7 (GND) of the sensitive device of the control board, and an instant suppression diode V6 is added between the power ground 14 (VCC) and the pin 7 (GND) to absorb a large current to the ground during electrostatic discharge.
Further, the control board 2 is connected with a large filter capacitor C36 and a small filter capacitor C37 at the entrance of the test ground and the protection ground in parallel for eliminating high and low frequency interference.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The control panel sampling circuit is used for acquiring various parameter values such as voltage, current, leakage voltage, grounding and the like, comparing the parameter values with set values, judging whether the parameter values are normal or not, and automatically controlling the on-off of the solid relay so as to achieve the aim of controlling whether the power supply can normally output, so that the device has the functions of under-voltage, over-current, leakage voltage protection and grounding monitoring, and if the parameter values are abnormal, the power supply wall box sends out an acousto-optic alarm and blocks the output, thereby protecting equipment in a vehicle; and if the resistance value between the vehicle body test ground and the protection ground exceeds the set value, the power supply wall box gives out an audible and visual alarm to indicate that the vehicle body is poorly grounded.
(2) The leakage circuit breaker is adopted to enable the device to have a leakage current protection function, and if the arranged leakage current exists in the vehicle body, the power supply wall box can automatically cut off the input of an alternating current power supply, so that the safety of equipment in the vehicle and operators in the vehicle is protected.
(3) The power supply surge protector is adopted to ensure that the power supply wall box has a lightning protection function, and when a power supply phase line or a zero line is struck by lightning (or power supply surge), the power supply input can be automatically cut off.
(4) The special detection functions and antistatic properties of the power supply wall box ensure that in-car equipment and operators are protected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the mounting of the structure on the inner bottom shell of the present utility model;
FIG. 3 is a cross-sectional view of the rear side of the bottom shell of the present utility model;
FIG. 4 is a diagram of the circuit connection relationship of the present utility model;
fig. 5 is a control panel assembly view;
1. a bottom case; 2. a control board; 3. an earth leakage breaker; 4. a power surge protector; 5. an alarm indicator light; 6. a power output interface; 7. an in-cabin buzzer; 8. the cabin protective ground binding post; 9. an out-cabin buzzer; 10. a mute button; 11. a power input interface; 12. a test ground binding post; 13. a protective earth binding post; 14. a top cover; 15. an AC/DC power module; 16. a filter; 17. a solid state relay; 18. a bracket; 19. a sensitive device; 20. a transient suppression diode V6; 21. a resistor R37; 22. a transient suppression diode V5; 23. a capacitor C31; 24. a capacitor C34; 25. a capacitance C35 of (2); 26. A capacitor C36; 27. a capacitor C37;
description of the embodiments
The technical scheme of the utility model is further described below with reference to the accompanying drawings.
1-3, a power supply wall box with automatic detection and protection functions comprises a bottom shell 1, a control panel 2, an electric leakage breaker 3, a power supply surge protector 4, an alarm indicator lamp 5, a power supply output interface 6, an in-cabin buzzer 7, an in-cabin protective ground binding post 8, an out-cabin buzzer 9, a mute button 10, a power supply input interface 11, a test ground binding post 12, a protective ground binding post 13, a top cover 14, an AC/DC power supply module 15, a filter 16, a solid relay 17, a bracket 18 and a rubber ring, wherein the control panel 2, the electric leakage breaker 3, the power supply surge protector 4, the alarm indicator lamp 5, the in-cabin buzzer 7, the out-cabin buzzer 9, the mute button 10, the power supply input interface 11, the power supply output interface 6, the test ground binding post 12 and the protective ground binding post 13 are arranged in the bottom shell 1; the power output interface 6, the in-cabin buzzer 7 and the in-cabin protective ground binding post 8 are positioned at the top end of the bottom shell, the alarm indicator lamp 5 is positioned above the bottom shell 1, the control board 2 is positioned on the right side below the bottom shell 1, the test ground binding post 12 and the protective ground binding post 13 are positioned on the left side below the bottom shell 1, the power input interface 11 is positioned above the protective ground binding post 13, the out-cabin buzzer 9 and the mute button 10 are positioned on the left side below the alarm indicator lamp 5, the leakage circuit breaker 3 and the power surge protector 4 are positioned on the right side below the alarm indicator lamp 5, the support 18 is arranged on the rear sides of the leakage circuit breaker 3 and the power surge protector 4, and the AC/DC power module 15, the filter 16 and the solid relay 17 are arranged on the support 18; the leakage circuit breaker is used for realizing the leakage current protection function, and if the vehicle body has leakage current not more than 30mA, the power supply wall box can automatically turn off the input of an alternating current power supply. If the vehicle body has a leakage voltage greater than 36V (error + -4V), the power supply wall box gives an audible and visual alarm and blocks output, so that the safety of equipment in the vehicle and operators in the vehicle is protected; the power surge protector is adopted to realize the lightning protection function, and when the phase line or the zero line of the power supply is struck by lightning (or power surge), the power supply input can be automatically cut off.
The rubber ring I is arranged between the bottom shell 1 and the leakage breaker 3 and between the rubber ring I and the power surge protector 4, and has a sealing effect; the second rubber ring is arranged between the bottom shell 1 and the top cover 14 to play a role in sealing and conductive connection.
The top cover 14 is mounted on the bottom case 1.
As shown in fig. 5, a resistor R37, an instant suppression diode V5, a capacitor C31 23, a capacitor C34 and a capacitor C35 are added at the positions from the sensing pin 3 (CKL) to the pin 7 (GND) of the sensing device 19 of the control board 2, and an instant suppression diode V6 20 is added between the power supply ground 14 (VCC) and the pin 7 (GND) to absorb a large current to the ground during electrostatic discharge; the control board 2 is connected with a filter capacitor C36 and a capacitor C37 which are larger and smaller at the entrance of the test ground and the protection ground in parallel, so as to eliminate high and low frequency interference.
As shown in fig. 4, coil magnetic beads suitable for L3, L4 and L5 are added at the circuit entrance of the test ground and the protection ground, so that the impedance of the path flowing to the circuit board is improved.
As shown in fig. 4, an instant suppression diode (TVS tube) is connected between the cabin interior, the external buzzer and the mute switch to ground for absorbing the large current to ground during the electrostatic discharge so as to avoid the malfunction of the buzzer.
The power input interface 11 is connected with the residual current circuit breaker 3, the power surge protector 4 is connected between the output end of the residual current circuit breaker 3 and the filter 16 in parallel, the NPE end of the power surge protector 4 is connected with the protective ground binding post 13, the output end of the filter 16 is connected with the AC/DC power module 15 in series, the output end of the AC/DC power module 15 is connected with the control board 2 to provide +5V and +12V direct current power for the AC/DC power module, the control board 2 is connected with the control end of the solid relay 17 to control the on-off of the solid relay, the solid relay 17 is connected with the power output interface 6, and the control board 2 is connected with the test ground binding post 12 and the protective ground binding post 13; the control panel sampling circuit is used for acquiring various parameter values such as voltage, current, leakage voltage, grounding and the like, so that the device has undervoltage, overvoltage and overcurrent protection functions and grounding monitoring functions, is smaller than or equal to 154V (error-8V), is larger than or equal to 264V (error +8V), is not larger than 25A, and the power supply wall box emits an acousto-optic alarm and blocks output to protect equipment in a vehicle; if the resistance value between the vehicle body test ground and the protection ground is monitored to exceed 50k omega (error + -5 k omega), the power supply wall box sends out an audible and visual alarm (output is not blocked) so as to indicate that the vehicle body is poorly grounded.
The control panel sampling circuit is used for acquiring various parameter values such as voltage, current, leakage voltage, grounding and the like, comparing the parameter values with set values, judging whether the parameter values are normal or not, automatically controlling the on-off of the solid relay so as to achieve the aim of controlling whether the power supply can normally output, giving an alarm to abnormal conditions such as sound (in-cabin and external buzzers) and light (bottom shell panel indicator lamps), and pressing a mute button can realize the mute function.
Based on the specificity of the working environment of the military communication vehicle, the selection of devices and the selection of structural materials are fully considered. The selected devices all meet the conditions of working temperature of-40 to +85 ℃, storage temperature of-55 to +105 ℃, storage humidity of less than 95+/-3 percent (the temperature is +35 ℃), and the structural material adopts aluminum alloy plates with better shielding effect on electric fields and light weight.
Claims (4)
1. The utility model provides a power supply wall box with automated inspection and protect function, a serial communication port, including drain pan (1), control panel (2), electric leakage circuit breaker (3), power surge protector (4), alarm indicator (5), power output interface (6), cabin buzzer (7), cabin protection ground terminal (8), cabin buzzer (9), silence button (10), power input interface (11), test ground terminal (12), protection ground terminal (13), top cap (14), ACDC power module (15), wave filter (16), solid relay (17), support (18) and rubber ring, drain pan (1) are equipped with control panel (2), electric leakage circuit breaker (3), power surge protector (4), alarm indicator (5), cabin buzzer (7), cabin buzzer (9), silence button (10), power input interface (11), power output interface (6), test ground terminal (12) and protection ground terminal (13) in the drain pan (1) are equipped with; the power output interface (6), the cabin buzzer (7) and the cabin protective ground binding post (8) are positioned at the top end of the bottom shell (1), the alarm indicator lamp is positioned above the bottom shell, the control board is positioned on the right side below the bottom shell, the test ground binding post (12) and the protective ground binding post (13) are positioned on the left side below the bottom shell (1), the power input interface (11) is positioned above the protective ground binding post (13), the cabin buzzer (9) and the mute button (10) are positioned on the left side below the alarm indicator lamp (5), the residual current circuit breaker (3) and the power surge protector (4) are positioned on the right side below the alarm indicator lamp (5), the bracket (18) is provided with the ACDC power module (15), the filter (16) and the solid relay (17) on the bracket (18); the rubber ring I is arranged between the bottom shell (1) and the residual current circuit breaker (3) and between the rubber ring I and the power surge protector (4) and has a sealing effect; the second rubber ring is arranged between the bottom shell (1) and the top cover (14) to play a role in sealing and conductive connection; the top cover (14) is arranged on the bottom shell (1), the power input interface (11) is connected with the residual current circuit breaker (3), the power surge protector (4) is connected with the output end of the residual current circuit breaker (3) and the input end of the filter (16), the NPE end of the power surge protector is connected with the protective ground binding post (13), the output end of the filter (16) is connected with the ACDC power module (15) in series, the ACDC power module (15) is connected with the control board (2) to provide +5V and +12V direct current power for the ACDC power module, the control board (2) is connected with the solid relay (17), the solid relay (17) is connected with the power output interface (6), and the control board (2) is connected with the test ground binding post (12) and the protective ground binding post (13). An instant suppression diode is added between a sensitive pin of a sensitive device (19) of the control board (2) and the power ground, and a proper coil magnetic bead is added at a circuit inlet to improve the impedance of a path flowing to a circuit board.
2. The power supply wall box with automatic detection and protection functions according to claim 1, wherein a resistor R37 (21), an instant suppression diode V5 (22), a capacitor C31 (23), a capacitor C34 (24) and a capacitor C35 (25) are added at the positions from 3 to 7 pins of a sensitive device (19) of the control board (2), and an instant suppression diode V6 (20) is added between the pins 14 and 7 of the power supply ground for absorbing a large current to the ground during electrostatic discharge.
3. A power supply wall box with automatic detection and protection functions according to claim 2, characterized in that a large filter capacitor C36 (26) and a small filter capacitor C37 (27) are connected in parallel at the entrance of the test ground and the protection ground of the control board (2) for eliminating high and low frequency interference.
4. The power supply wall box with automatic detection and protection functions according to claim 1, wherein coil magnetic beads suitable for L3, L4 and L5 are added at the inlets of the test ground and the protection circuit, so that the impedance of a path flowing to a circuit board is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320206597.XU CN219660176U (en) | 2023-02-14 | 2023-02-14 | Power supply wall box with automatic detection and protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320206597.XU CN219660176U (en) | 2023-02-14 | 2023-02-14 | Power supply wall box with automatic detection and protection functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219660176U true CN219660176U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320206597.XU Active CN219660176U (en) | 2023-02-14 | 2023-02-14 | Power supply wall box with automatic detection and protection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219660176U (en) |
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2023
- 2023-02-14 CN CN202320206597.XU patent/CN219660176U/en active Active
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