CN217769588U - Low-voltage intelligent power box - Google Patents

Abstract

The utility model relates to a low-voltage intelligent power supply box, comprising a box body and a bracket, the bracket includes an energy storage module and a bypass module for realizing automatic short-circuiting of a meter, and the energy storage module includes a power supply circuit. The bypass module automatically short-circuits the fault meter, and when a planned power outage occurs, the energy storage module supplies power to the user through the power supply circuit; Under the condition that the mains power is not lost, the user's power supply will not be affected by the running state of the meter, which ensures the stability and safety of the user's electricity consumption, and solves the problem of the failure of the electric energy meter or the work of the staff to eliminate the shortage of the meter. When there is a planned power outage, the energy storage module supplies power to the user through the power supply circuit, which can ensure the temporary power supply device for single-family users.

Description

A low-voltage intelligent power box

technical field

The utility model relates to a low-voltage intelligent power supply box.

Background technique

Under the dual background of power supply companies requiring highly resilient power grids and an aging population, more people have high-reliability electricity demand. Meter failures at the end of the distribution network, planned power outages, or meter elimination renovations will cause power outages for low-voltage users. Users who are sensitive to power quality, such as patients who have long-term use of emergency equipment such as ventilators, cannot effectively guarantee the power supply of these special groups. Power outages It will have a certain impact on the economy and public opinion. There is a gap in customer-level guaranteed power supply. At the same time, it is difficult for power supply companies and users to negotiate power outage time during on-site operations, which affects the smooth implementation of operation plans. The normal life of nearby residents is severely restricted by conditions such as land type. The cost of power guarantee for a single household is relatively high, and the level of refinement of power guarantee is low. At the same time, some existing bypass devices are directly applied to the electric energy meter, which cannot guarantee users in the event of a planned power outage. For normal electricity consumption, general energy storage devices have poor flexibility in connecting to the grid, and cannot automatically connect to the grid system without the user's perception.

Utility model content

The purpose of the utility model is to provide a low-voltage intelligent power supply box, which can simplify the structure of the whole power supply box and facilitate installation on both sides of the electric energy meter of the user.

In order to solve the above-mentioned technical problems, the utility model is realized through the following technical solutions: a low-voltage intelligent power supply box, including a box body and a bracket, the bracket is arranged in the box body, the bracket includes an energy storage module and realizes meter automatic The short-circuited bypass module, the support includes a bottom plate and a vertical plate, the bottom plate is arranged at the bottom of the vertical plate, the bypass module is arranged at the top of the vertical plate, and a fixed energy storage module is arranged on the bottom plate The energy storage module includes a power supply circuit. When the meter fails, the faulty meter is automatically short-circuited through the bypass module. When a planned power outage occurs, the energy storage module supplies power to the user through the power supply circuit.

Preferably, the bypass module includes a first plug, a second plug, a third plug, a voltage relay DJ connected between the live wire and the neutral wire, an AC contactor KM2 and an intermediate relay KM, and the intermediate relay includes a first A normally open contact and a second normally open contact, the first plug is connected to the live wire, the second plug is connected to the neutral wire, the third plug is connected to the live wire, and connected to the first normally open contact One end is connected, the other end of the first normally open contact is connected to the live wire, the normally closed contact of the AC contactor KM2 is set on the live wire, and the normally open contact of the AC contactor KM2 is set on the power supply circuit.

Preferably, the bypass module is provided with a reset button FB, one end of the reset button FB is connected to the intermediate relay KM, and the other end of the reset button FB is connected to the live wire through the normally open contact of the voltage relay DJ, and the The second normally open contact is connected in parallel at both ends of the normally open contact of the voltage relay DJ.

Preferably, the energy storage module includes a battery module GB and an inverter module MK, the battery module GB is connected to the inverter module MK through a first circuit breaker 1ZK, and the power supply circuit includes a second inverter module connected to the inverter module MK. Two circuit breakers 1KK, the fourth plug connected to the neutral line, the fifth plug connected to the live wire, the normally open contact of the AC contactor between the fifth plug and the second circuit breaker.

Preferably, the front side wall of the box is provided with an opening, the bracket is installed in the box through the opening, the box is provided with a door, one end of the door is rotatably connected to the box, the The other end of the box door is provided with a locking mechanism, and the box door is locked on the box body through the locking mechanism. The first plug, the second plug, the third plug, the fourth plug and the fifth plug are all arranged on the box door. superior.

Preferably, an observation window and a nameplate are provided on the box door.

Preferably, the top of the box is provided with a top cover, and the top of the top cover is provided with an inclined portion inclined downward.

Preferably, handles are provided on the left and right side walls of the box, and moving rollers are provided at the bottom of the box.

In summary, the utility model has the advantages of automatically short-circuiting the faulty meter through the bypass module, so that the user's power supply will not be affected by the operating state of the meter when the mains power is not lost, ensuring The stability and safety of the user's electricity consumption solves the power outage problem caused by the failure of the electric energy meter or the staff performing the meter elimination operation. Secondly, when there is a planned power outage, the energy storage module supplies power to the User power supply, a device that can guarantee temporary power supply for single household users, improves the flexibility of the arrangement and implementation of low-voltage small-scale operation plans, and meets the electricity needs of special groups, such as ventilators, baby thermostat nursing instruments and other special electricity needs. It can be used as a backup power supply for elevators in old communities, or to meet the power needs of emergency lighting and water pumps. The electric energy provided by the energy storage device can buy valuable working time for the staff, meet the requirements of non-stop power supply in key areas, improve the ability of stable operation between "network and load", improve the unit's low-voltage guaranteed power supply mode, and realize the power supply of power supply enterprises. The breakthrough of box protection power supply 0 extends the fine level of power supply protection from "regional level" to "user level". The single-use cost is low, and the installation is simple. The equipment is automatically put into operation without on-site operation, and cumbersome safety measures are not required, which avoids safety risks in use. Finally, the bracket installs the energy storage module and the bypass module in the box, so it can be used It forms an installation as a whole, which simplifies the installation space of the entire box, and installs the whole at the customer's electric meter, which greatly reduces the risk of power outage for the user, and can automatically eliminate the meter failure without the user's perception, reducing the power outage time 0 minutes. Targeted transformation of users with high reliability electricity demand can reduce the risk of public opinion caused by meter failure, and can guarantee short-term power supply for single-family shops. It is easier to negotiate power outage time, and flexible arrangements can be made Field work plan. In the daily low-voltage small-scale operation, it can not be affected by the site conditions, and there is a power point to supply power to the equipment at any time, the difficulty of the operation is reduced, the scheme is more flexible, and the overall operation is free of noise and environmental pollution, reducing labor costs and scheduling costs. .

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of a kind of low-voltage intelligent power box of the utility model;

Fig. 2 is the circuit diagram inside the box body in the utility model;

Fig. 3 is a schematic structural diagram of the bracket in the present invention.

Reference signs:

1 box body, 11 box door, 12 locking mechanism, 13 observation window, 14 nameplate, 15 top cover, 16 inclined part, 17 handle, 18 moving roller, 2 bracket, 21 bottom plate, 22 vertical plate, 23 fixed frame, 24 container Cavity, 25 wall panels, 26 flanges, 27 support rods, 3 energy storage modules, 31 battery modules GB, 32 inverter modules MK, 4 bypass modules.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, a low-voltage intelligent power supply box includes a box body 1 and a bracket 2, the bracket 2 is arranged in the box body 1, and the bracket 2 includes an energy storage module 3 and a realization table The bypass module 4 that is automatically short-circuited, the support 2 includes a bottom plate 21 and a vertical plate 22, the bottom plate 21 is arranged at the bottom of the vertical plate 22, and the bypass module 4 is arranged at the top of the vertical plate 22, The bottom plate 21 is provided with a fixed frame 23 for fixing the energy storage module 3, and the energy storage module 3 includes a power supply circuit. When the meter breaks down, the bypass module 4 automatically shorts the failed meter. When the power fails, the energy storage module 3 supplies power to the user through the power supply circuit.

The faulty meter is automatically short-circuited through the bypass module 4, so that the user's power supply will not be affected by the running state of the meter without the mains power loss, ensuring the stability and safety of the user's power consumption. It solves the power outage problem caused by the failure of the electric energy meter or the staff performing the meter elimination operation. Secondly, when there is a planned power outage, the energy storage module 3 supplies power to the user through the power supply circuit, which can guarantee the temporary The power supply device improves the flexibility of the arrangement and implementation of the low-voltage small-scale operation plan, meets the electricity needs of special groups, such as ventilators, baby thermostat nursing instruments and other special electricity needs, and can also be used as a backup power supply for elevators in old communities , or to meet the power needs of emergency lighting, water pumps. The electric energy provided by the energy storage device can buy valuable working time for the staff, meet the requirements of non-stop power supply in key areas, improve the ability of stable operation between "network and load", improve the unit's low-voltage guaranteed power supply mode, and realize the power supply of power supply enterprises. The breakthrough of box protection power supply 0 extends the fine level of power supply protection from "regional level" to "user level". The single-use cost is low, and the installation is simple. The equipment is automatically put into operation without on-site operation, and cumbersome safety measures are not required, which avoids safety risks in use. Finally, the bracket 2 installs the energy storage module 3 and the bypass module 4 in the box body 1 Therefore, it can be installed as a whole, which simplifies the installation space of the whole box 1, and can be installed at the customer's electric meter as a whole, which greatly reduces the risk of power failure for the user, and can automatically eliminate the meter without the user's perception. fault, reduce the power outage time to 0 minutes, and carry out targeted transformation for users with high reliability electricity demand, which can reduce the risk of public opinion caused by meter failure, and can guarantee the short-term power supply of single-family shops, and it is easier to negotiate the power outage time Easy, and at the same time can flexibly arrange the on-site operation plan. In the daily low-voltage small-scale operation, it can not be affected by the site conditions, and there is a power point to supply power to the equipment at any time, the difficulty of the operation is reduced, the scheme is more flexible, and the overall operation is free of noise and environmental pollution, reducing labor costs and scheduling costs. .

The bypass module 4 includes a first plug, a second plug, a third plug, a voltage relay DJ connected between the live wire and the neutral wire, an AC contactor KM2 and an intermediate relay KM, and the intermediate relay includes a first constant An open contact and a second normally open contact, the first plug is connected to the live wire, the second plug is connected to the neutral wire, the third plug is connected to the live wire, and connected to one end of the first normally open contact , the other end of the first normally open contact is connected to the live wire, the normally closed contact of the AC contactor KM2 is set on the live wire, the normally open contact of the AC contactor KM2 is set on the power supply circuit, the bypass The circuit module 4 is provided with a reset button FB, one end of the reset button FB is connected to the intermediate relay KM, the other end of the reset button FB is connected to the live wire through the normally open contact of the voltage relay DJ, and the second normally open contact The points are connected in parallel at both ends of the normally open contacts of the voltage relay DJ. The energy storage module 3 includes a battery module GB31 and an inverter module MK32. The battery module GB31 is connected to the inverter module MK32 through the first circuit breaker 1ZK, so The above power supply circuit includes the second circuit breaker 1KK connected to the inverter module MK32, the fourth plug connected to the neutral line, disconnecting the outlet line of the watt-hour meter to the switch connection line behind the meter, and connecting the connection line to the third plug , connect the first plug to the top of the switch on the front of the meter, connect the second plug to the zero line switch of the meter box, connect the fourth plug to the top of the switch on the back of the meter, and connect the fifth plug to the zero line switch of the meter box, normal In this state, the user uses the mains power. At this time, neither the bypass module 4 nor the energy storage module 3 operates. The open node is automatically closed, and the faulty meter is automatically shorted. The utility model switches to the bypass switch without the user's perception, and the user side does not lose voltage. When a planned power outage occurs, when KM2 detects a voltage loss, when a When a power failure is planned, KM2 detects a voltage drop, the normally closed contact of the AC contactor KM2 on the live line is disconnected, and the normally open contact of the AC contactor KM2 on the power supply circuit is closed, because the normally closed contact of the AC contactor KM2 on the live line The closed contact is disconnected, and the electric energy will not be sent back, which ensures the safety and stability of the user's electricity consumption. The setting of the reset button FB can realize rapid reset. The fifth plug connected to the live wire, the AC contactor Between the fifth plug of the normally open contact and the second circuit breaker, the battery module GB31 in this embodiment includes four sets of 12V batteries, and the four sets of 12V batteries are connected in series to form a 48V power supply on the DC side, and then the battery module is connected through the inverter module MK32 GB31 converts it into 220V AC, and then supplies power to users through the power supply circuit.

The fixing frame 23 is provided with a cavity 24 for accommodating the battery module GB31, and the inverter module MK32 is arranged on one of the wall plates 25 constituting the cavity 24 on the fixing frame 23, and is located outside the cavity 24. The battery module GB31 and the inverter module MK32 can be installed as a whole, which simplifies the installation space of the entire energy storage module 3 on the bottom plate 21, leaving enough heat dissipation space between the energy storage module 3 and the bypass module 4, Make the operation more stable.

The fixing frame 23 is provided with a flange 26 connected with the bottom plate 21, the flange 26 is connected with the bottom plate 21 to limit the battery module 31 in the cavity 24, and the gap between the wall of the cavity and the battery module GB31 is With a unilateral clearance of 0.2-1 mm, the wall plate 25 is provided with a support rod 27 for fixing the inverter module MK32, and the flange 26 can ensure that the fixing frame 23 is installed on the bottom plate 21 stably, simplifying the installation of the battery module GB31 The structure and the setting of the unilateral gap prevent the fixing frame 23 from colliding with the battery module GB31 during the installation process, and the setting of the support rod 27 can form a certain heat dissipation space between the inverter module MK32 and the wall plate 25. The heat dissipation effect is further improved.

The front side wall of the box body 1 is provided with an opening, the bracket 2 is installed in the box body 1 through the opening, the box body 1 is provided with a box door 11, and one end of the box door 11 is rotatably connected to the box body 1, the other end of the box door 11 is provided with a locking mechanism 12, the box door 11 is locked on the box body 1 through the locking mechanism 12, the first plug, the second plug, the third plug, the fourth plug The plug and the fifth plug are all arranged on the box door 11, and the opening is convenient for the bracket 2 to be installed in the box body 1. The setting of the box door 11 can realize that the bracket 2 is sealed in the box body 1. The locking mechanism 12 in the present embodiment is For mechanical locks or electronic locks, the first plug, the second plug, the third plug, the fourth plug and the fifth plug are all arranged on the box door 11, which can realize integrated setting and simplify the wiring in the box body 1. In addition, , the reset button FB can also be set on the box door 11, which is convenient for the operator to operate. The box door 11 is provided with an observation window 13 and a nameplate 14. The setting of the observation window 13 is convenient for the operator to observe the internal operation. The setting of 14 is convenient for the on-site installation of the operator. The top of the box body 1 is provided with a top cover 15, and the top of the top cover 15 is provided with a downwardly inclined inclined portion 16, which can effectively reduce the impact of rainwater on the whole , the left and right side walls of the box 1 are provided with a handle 17, the bottom of the box 1 is provided with a moving roller 18, the setting of the handle 17 facilitates the movement of the box 1, and the setting of the moving roller 18 can In the process of single use, it can move within a certain area and provide users with temporary power points.

The above is only a specific embodiment of the utility model, but the technical characteristics of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are all covered by the utility model. In the scope of the new patent.

Claims (8)

1. The utility model provides a low pressure intelligent power supply case which characterized in that: the energy storage device comprises a box body and a support, the support is arranged in the box body, the support comprises an energy storage module and a bypass module for realizing automatic short circuit of the meter, the support comprises a bottom plate and a vertical plate, the bottom plate is arranged at the bottom end of the vertical plate, the bypass module is arranged at the top end of the vertical plate, a fixing frame for fixing the energy storage module is arranged on the bottom plate, the energy storage module comprises a power supply loop, when the meter fails, the fault meter is automatically short-circuited through the bypass module, and when the scheduled power failure occurs, the energy storage module supplies power to a user through the power supply loop.

2. The low-voltage intelligent power box of claim 1, wherein: bypass module includes first plug, second plug, third plug and connects voltage relay DJ, ac contactor KM2 and auxiliary relay KM between live wire and zero line respectively, auxiliary relay includes first normally open contact and second normally open contact, first plug links to each other with the live wire, the second plug links to each other with the zero line, the third plug links to each other with the live wire, and links to each other with the one end of first normally open contact, and the other end of first normally open contact links to each other with the live wire, ac contactor KM 2's normally closed contact sets up on the live wire, ac contactor KM 2's normally open contact sets up on the power supply circuit.

3. The low-voltage intelligent power box of claim 2, wherein: the bypass module is provided with a reset button FB, one end of the reset button FB is connected with the intermediate relay KM, the other end of the reset button FB is connected with a live wire through a normally open contact of a voltage relay DJ, and the second normally open contact is connected to two ends of the normally open contact of the voltage relay DJ in parallel.

4. The low-voltage intelligent power box of claim 2, wherein: energy storage module includes battery module GB and inverter module MK, battery module GB links to each other with inverter module MK through first circuit breaker 1ZK, power supply circuit includes the second circuit breaker 1KK that links to each other with inverter module MK, the fourth plug that links to each other with the zero line, the fifth plug that links to each other with the live wire, between ac contactor's normally open contact fifth plug and the second circuit breaker.

5. The low-voltage intelligent power box of claim 2, wherein: the front side wall of the box body is provided with an opening, the support is installed in the box body through the opening, the box body is provided with a box door, one end of the box door is rotatably connected to the box body, the other end of the box door is provided with a locking mechanism, the box door is locked on the box body through the locking mechanism, and the first plug, the second plug, the third plug, the fourth plug and the fifth plug are all arranged on the box door.

6. The low-voltage intelligent power box of claim 5, wherein: and the box door is provided with an observation window and a nameplate.

7. The low-voltage intelligent power box of claim 1, wherein: the top of box is equipped with the top cap, the top of top cap is equipped with the slope of downward sloping.

8. The low-voltage intelligent power box of claim 1, wherein: all be equipped with the handle on the lateral wall about the box, the bottom of box is equipped with the removal gyro wheel.

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