Multifunctional traffic signal lamp control system power supply

Abstract

A multifunctional traffic light control system power supply comprises a cabinet body, a battery compartment is arranged in the cabinet body, a mains supply interface is arranged on the cabinet body, a plurality of battery packs are placed in the battery compartment, the multifunctional traffic light control system power supply further comprises a charging and discharging unit, the charging and discharging unit comprises a bidirectional converter, and one side of the bidirectional converter is electrically connected with the battery packs. And the other side is electrically connected with the commercial power interface and the external discharge interface. The multifunctional traffic signal lamp control system power supply can charge and store energy for the battery pack stored therein through the mains supply at ordinary times, the battery pack can be taken and placed to provide power conversion service for the electric bicycle, and when the mains supply is cut off, the power supply can supply power for the intersection traffic signal lamp through the external discharge interface through internal logic switching. In addition, the emergency power supply can be used as a signal lamp emergency power supply.

Description

Technical Field

[0001] This utility model relates to the field of emergency power supply technology, specifically a power supply for a multi-functional traffic signal control system. Background Technology

[0002] Traffic lights are a crucial urban infrastructure ensuring safe, orderly, and smooth traffic flow. Power outages at intersections can cause traffic lights and other equipment to malfunction, leading to traffic congestion and accidents. Therefore, a stable and reliable emergency power supply is needed to ensure the continued operation of the traffic signal system during sudden power outages, protecting public safety and reducing the workload of traffic police. When a power outage occurs at an intersection, all traffic equipment (such as traffic lights) ceases operation. Current emergency measures include traffic police hand signals, mobile generators, high-capacity UPS power supplies, or temporary mobile traffic lights. While these measures can temporarily resolve the power outage problem, they still require significant manpower or temporary equipment for emergency maintenance. Currently, there is no readily available, efficient, intelligent, and economical professional power supply system that can be widely adopted and seamlessly provide emergency power to the traffic signal control system during power outages.

[0003] A search revealed publicly available technical documents regarding corresponding emergency backup power supplies. For example, a utility model authorization announcement with publication number "CN212267266U" entitled "An Intelligent Battery Swapping Cabinet" discloses an intelligent battery swapping cabinet comprising: a cabinet body, a controller, at least one charging compartment, and an emergency power supply. The charging compartment is used for charging and storing the battery within it; the emergency power supply is used for charging the battery within the charging compartment; the intelligent battery swapping cabinet is powered by a street light, which is electrically connected to the charging compartment and the emergency power supply via a switch; the emergency power supply is also electrically connected to the charging compartment via a switch; the controller is connected to the charging compartment, the emergency power supply, and the cabinet body, and controls them respectively via control signals.

[0004] For example, the utility model authorization announcement document with publication number "CN220884342U" and titled "A Battery Swapping Cabinet with an Emergency Energy Storage System" discloses a battery swapping cabinet with an emergency energy storage system, including a cabinet body. The cabinet body has an internal mounting mechanism, and the mounting mechanism has an inverter inside. The upper surface of the cabinet body has a protective mechanism. The mounting mechanism includes a box fixed to the left side of the cabinet's inner cavity. A first motor is fixed to the lower surface of the box's inner cavity, and a first bevel gear is fixed to the output shaft of the first motor. A first threaded rod and a second threaded rod are rotatably connected between the front and rear sides of the box's inner cavity via bearing seats. The technical solution disclosed in the above-mentioned prior art document can discharge externally in the event of a mains power outage, but it does not consider how to improve the efficiency of the energy storage cabinet during charging and energy storage. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a multifunctional traffic signal control system power supply, including a cabinet with a battery compartment inside. The cabinet has an AC power interface, and multiple battery packs are placed inside the battery compartment. It also includes a charging and discharging unit, which includes a bidirectional converter. One side of the bidirectional converter is electrically connected to the battery packs, and the other side is electrically connected to both the AC power interface and the external discharge interface.

[0006] Furthermore, the battery compartment is divided into multiple partitioned compartments, each containing a battery pack, and one side of the bidirectional converter is electrically connected to the battery pack.

[0007] Furthermore, each of the compartments has a slide rail, through which the battery pack can enter and exit from the compartment. Inside the compartment, there is a charging and discharging interface. When the battery pack is pushed into the compartment through the slide rail, the positive and negative terminals of the battery pack are electrically connected to the charging and discharging interface, and one side of the bidirectional converter is electrically connected to the charging and discharging interface.

[0008] Furthermore, the bidirectional converter is connected to a pre-charging circuit on the electrical connection side of the charging / discharging interface and the mains interface side. The pre-charging circuit includes a pre-charging capacitor and a current-limiting resistor.

[0009] Furthermore, the mains power interface and the bidirectional converter are connected via a first switch S1, and the bidirectional converter and the battery pack are connected via a second switch S2.

[0010] Furthermore, the bidirectional converter and the external discharge interface are connected via a third switch S3.

[0011] Furthermore, a canopy is fixedly connected to the top of the cabinet.

[0012] Furthermore, a surveillance camera is connected below the canopy.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects: The multifunctional traffic signal control system power supply proposed by this utility model has three working modes: 1) Battery swapping service (purified charging) working mode, that is, when there is mains power, this power supply system provides purified AC220V power to the traffic signal equipment while charging and storing the incomplete battery pack stored inside, and the fully charged battery pack can provide battery swapping service for electric bicycles; 2) Emergency power supply (inverter power conversion) working mode, that is, when the mains power fails, the battery swapping service is stopped through internal logic switching, and the power can be supplied to the traffic signal equipment at the intersection through the external discharge interface, which improves the utilization efficiency of the equipment; 3) Electricity sales working mode, that is, when a mobile energy storage device (such as an electric vehicle) is connected to the electricity sales interface of this multifunctional power supply system when there is a demand for electricity nearby, the energy storage device can be connected to the electricity sales interface of this multifunctional power supply system to provide electricity sales service and enjoy the revenue from electricity sales. Attached Figure Description

[0014] Figure 1 Schematic diagram of the power supply structure of a multi-functional traffic signal control system;

[0015] Figure 2 : Schematic diagram of the compartment structure;

[0016] Figure 3 Schematic diagram of energy storage mode circuit;

[0017] Figure 4 Schematic diagram of emergency power supply mode. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] A power supply for a multi-functional traffic signal control system includes a cabinet 1, a battery compartment 2 inside the cabinet 1, an AC power interface 11 on the cabinet 1, multiple battery packs 21 placed inside the battery compartment 2, and a charging and discharging unit 3. The charging and discharging unit 3 includes a bidirectional converter 31, one side of which is electrically connected to the battery packs 21, and the other side is electrically connected to the AC power interface 11 and an external discharge interface 12, respectively.

[0020] like Figure 1As shown, the battery pack 21 inside the battery compartment 2 is movable. Normally, it can be charged by converting AC mains power to DC power via the bidirectional converter 31 in the charging / discharging unit 3. In the event of a mains power outage, the battery pack in the battery compartment 2 can serve as an emergency power source. After being converted to AC power by the bidirectional converter 31, it can be discharged externally through the external discharge interface 12 to provide backup emergency power for traffic lights at intersections. The battery pack 21 inside the battery compartment 2 can be removed when fully charged to provide battery swapping services for electric bicycles. The battery compartment 2 can be designed with a door; the door should be locked when the mains power is interrupted and the battery pack 21 is discharging externally, at which point the battery swapping service is stopped.

[0021] In a more preferred embodiment, the battery compartment 2 is divided into multiple partitioned compartments 22, each containing a battery pack 21. One side of the bidirectional inverter 31 is electrically connected to the battery pack 21. Each partitioned compartment 22 has a slide rail, allowing the battery pack 21 to enter and exit from within the compartment. Inside each partitioned compartment 22 is a charging / discharging interface 221. When the battery pack 21 is pushed into the partitioned compartment 22 via the slide rail, the positive and negative terminals of the battery pack 21 are electrically connected to the charging / discharging interface 221, and one side of the bidirectional inverter 31 is electrically connected to the charging / discharging interface 221. Specifically... Figure 2 As shown, charging and discharging interfaces 221 are provided at the bottom of each compartment 22. In this embodiment, they can be conductive metal springs. The battery pack 21 can be removed for battery swapping via slide rail 23, or it can be pushed in via slide rail. The metal springs contact the positive and negative terminals of the battery pack 21, and the battery pack 21 is initially charged by mains power rectified by bidirectional converter 31. When the mains power is interrupted, the DC power of the battery pack 21 is connected to the bidirectional converter 31 through the charging and discharging interface 221. After being converted into AC power, it is discharged externally through the external discharge interface 12 of the cabinet 1 to provide emergency power for the traffic lights at the intersection. This method does not require frequent movement of the emergency power supply. It can be fixedly installed near the intersection, providing battery swapping services during normal times and serving as a backup power supply in emergencies, thus improving efficiency and eliminating the need for a large number of personnel to move and transport the emergency power supply.

[0022] In a more preferred embodiment, the bidirectional converter 31 and the charging / discharging interface 221 are electrically connected to one side, and the mains interface 11 is also connected to a pre-charging circuit. The pre-charging circuit includes a pre-charging capacitor and a current-limiting resistor. During system startup or battery replacement, the pre-charging circuit gradually charges the capacitor through the current-limiting resistor, preventing high current surges to circuit components and ensuring the capacitor reaches a safe voltage before the power system operates normally, thereby protecting other circuit components. By controlling the charging current through the set current-limiting resistor, the capacitor voltage is gradually increased to prevent damage to the system from instantaneous high current. After pre-charging is complete, the circuit automatically switches to normal operating mode. Once the capacitor voltage stabilizes, the system officially starts up.

[0023] In a more preferred embodiment, such as Figure 3 and Figure 4 As shown. The mains power interface 11 and the bidirectional converter 31 are connected via a first switch S1, and the bidirectional converter 31 and the battery pack 21 are connected via a second switch S2. When in energy storage charging mode, the first switch S1 and the second switch S2 are closed. Mains power enters the cabinet 1 through the mains power interface 11 and connects to the bidirectional converter 31. The bidirectional converter 31 then rectifies and converts the mains power to charge the battery pack 21. In this embodiment, the battery pack 21 can have multiple voltage levels, such as 72V, 60V, 48V, etc., to match the batteries required by electric bicycles with external battery swapping.

[0024] In a more preferred embodiment, the bidirectional converter 31 and the external discharge interface 12 are connected by a third switch S3. Similarly to the above embodiment, when in emergency mode, the third switch S3 is closed and the first switch S1 is open, and the battery pack 21 inside the cabinet 1 can ultimately provide emergency power to the traffic lights at the intersection through the bidirectional converter 31 and the external discharge interface 12.

[0025] In a more preferred embodiment, a canopy 4 is also fixedly connected to the top of the cabinet 1. On the one hand, it can protect the cabinet 1 from wind and rain; on the other hand, when the cabinet 1 is placed at an intersection, the canopy 4 can also provide shelter from rain and sun for pedestrians.

[0026] In a more preferred embodiment, a monitoring camera 5 is connected below the canopy 4. The monitoring camera 5 can be used for road monitoring or for video monitoring of the device itself, to monitor the usage status of the battery swapping service or to monitor the fire safety status of the device in real time.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power supply for a multifunctional traffic signal control system, characterized in that, The device includes a cabinet (1), which has a battery compartment (2) inside. The cabinet (1) has an AC power interface (11) on it. Multiple battery packs (21) are placed inside the battery compartment (2). The device also includes a charging and discharging unit (3), which includes a bidirectional converter (31). One side of the bidirectional converter (31) is electrically connected to the battery packs (21), and the other side is electrically connected to the AC power interface (11) and the external discharge interface (12).

2. The power supply for the multi-functional traffic signal control system as described in claim 1, characterized in that, The battery compartment (2) is divided into multiple compartments (22), each compartment (22) contains a battery pack (21), and one side of the bidirectional converter (31) is electrically connected to the battery pack (21).

3. The power supply for the multifunctional traffic signal control system as described in claim 2, characterized in that, Each of the compartments (22) has a slide rail. The battery pack (21) can enter and exit from the compartment (22) through the slide rail (23). There is a charging and discharging interface (221) inside the compartment (22). When the battery pack (21) is pushed into the compartment (22) through the slide rail, the positive and negative terminals of the battery pack (21) are electrically connected to the charging and discharging interface (221). One side of the bidirectional converter (31) is electrically connected to the charging and discharging interface (221).

4. The power supply for the multifunctional traffic signal control system as described in claim 3, characterized in that, The bidirectional converter (31) and the charging / discharging interface (221) are electrically connected on one side, and the mains interface (11) is also connected to a pre-charging circuit, which includes a pre-charging capacitor and a current-limiting resistor.

5. The power supply for the multifunctional traffic signal control system as described in claim 4, characterized in that, The mains interface (11) and the bidirectional converter (31) are connected by a first switch S1, and the bidirectional converter (31) and the battery pack (21) are connected by a second switch S2.

6. The power supply for the multifunctional traffic signal control system as described in claim 5, characterized in that, The bidirectional converter (31) and the external discharge interface (12) are connected by a third switch S3.

7. The power supply for the multifunctional traffic signal control system as described in claim 6, characterized in that, The top of the cabinet (1) is also fixedly connected to a canopy (4).

8. The power supply for the multifunctional traffic signal control system as described in claim 7, characterized in that, A monitoring camera (5) is connected below the canopy (4).

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