Intelligent bus shelter equipment sharing electricity utilization circuit

Abstract

An intelligent bus shelter equipment sharing electricity utilization circuit comprises a dual-power-supply automatic change-over switch, the dual-power-supply automatic change-over switch is provided with two power supply input ends and a power supply output end, and the dual-power-supply automatic change-over switch can automatically switch the power supply output end to be communicated with any one of the two power supply input ends through switching actions; the two power supply input ends are respectively connected with a first power supply branch and a second power supply branch which are connected in parallel to a commercial power supply line; the power storage and supply module comprises a plurality of power storage and supply units which are connected in parallel in the second power supply branch and are in one-way current conduction, each power storage and supply unit comprises a storage battery, a first diode and a second diode, and the first diode and the second diode are sequentially connected in series to form a one-way conduction circuit; the current conduction direction of the one-way conduction circuit is from the second power supply AC / DC to the dual-power supply automatic change-over switch, and the charging and discharging port of the storage battery is connected to a circuit between the first diode and the second diode. According to the utility model, the standby power duration of each device is consistent, and the demand capacity of the storage battery is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent bus shelters, and in particular to an intelligent bus shelter equipment shared power circuit, which is used for shared power use of differentiated power sources. Background Art

[0002] The existing smart bus shelters generally use the power supply of street lamps. Since the street lamps are powered off during the day and powered on at night, battery backup is required for normal use during the day. The current smart bus shelters usually consist of several display screens, video surveillance equipment, network equipment and corresponding fan cooling and other electrical equipment. Each electrical equipment uses a decentralized power supply. The power of each load is different and the use is different. When using battery backup, the backup time is inconsistent, and various power supplies and batteries cannot be shared. In order to achieve the minimum backup time for each load, a higher power power supply and battery are required. At the same time, the use of larger capacity power supplies and battery equipment brings the disadvantage of increased costs. Utility Model Content

[0003] Based on the above technical problems existing in the prior art, the utility model provides a shared power circuit for intelligent bus shelter equipment. On the one hand, the utility model connects a unidirectional diode in parallel to the input end of each battery to realize shared charging of multiple differentiated batteries, and connects a unidirectional diode in parallel to the discharge end of each battery to realize shared discharge of multiple differentiated batteries, so as to achieve consistent backup power duration for each load device, reduce the capacity requirement of the backup battery, and thus reduce costs. On the other hand, the utility model separates conventional AC power supply from battery backup power to realize automatic switching of dual power supply main and backup types of the load. Because the cost of battery chargers and conventional power supplies is different, the power capacity of the charger only needs to meet the charging capacity requirement of the battery, thereby reducing the power capacity requirement of the charger and further reducing costs. At the same time, the power of the conventional AC power supply only needs to meet the power requirement of the load, and does not need to bear the charging power capacity.

[0004] To achieve the above-mentioned purpose, the utility model provides a shared power circuit for intelligent bus shelter equipment, which includes a dual-power automatic switching switch, the dual-power automatic switching switch has two power input terminals and one power output terminal, and the dual-power automatic switching switch can automatically switch the power output terminal to be connected to any one of the two power input terminals through a switching action;

[0005] The two power input ends are respectively connected to a first power supply branch and a second power supply branch connected in parallel to the mains power supply line, the first power supply branch is connected in series with a first power supply AC / DC, the second power supply branch is connected in series with a second power supply AC / DC and a power storage power supply module, and the power storage power supply module is located at the output side of the second power supply AC / DC;

[0006] The power storage power supply module includes a plurality of power storage power supply units which are arranged in parallel in the second power supply branch and conduct current in one direction. Each of the power storage power supply units includes a battery, a first diode and a second diode. The first diode and the second diode are connected in series in sequence to form a one-way conduction circuit. The current conduction direction of the one-way conduction circuit is from the second power supply AC / DC to the dual power supply automatic switching switch. The charging and discharging ports of the battery are connected to the circuit between the first diode and the second diode.

[0007] As a further preferred technical solution of the present utility model, a first line protector is connected in series on the AC power supply line, and the AC power provided by the AC power is output to the first power supply branch and the second power supply branch through the first line protector. The first line protector is a circuit breaker, a leakage protection switch or a fuse.

[0008] As a further preferred technical solution of the utility model, a grounding protection line is connected to the mains power supply line, a second line protector and a surge protector are connected in series in the grounding protection line, and the second line protector is a circuit breaker, a leakage protection switch or a fuse.

[0009] As a further preferred technical solution of the present utility model, the first power supply branch is also connected in series with a third line protector, and the third line protector is located on the input side of the first power supply AC / DC, and the third line protector is a circuit breaker, a leakage protection switch or a fuse.

[0010] As a further preferred technical solution of the present utility model, the second power supply branch is also connected in series with a fourth line protector, which is located on the input side of the second power supply AC / DC and is a circuit breaker, a leakage protection switch or a fuse.

[0011] As a further preferred technical solution of the present invention, the power output end is connected to a plurality of electrical devices, and the plurality of electrical devices are arranged in parallel.

[0012] The utility model of intelligent bus shelter equipment shares the power circuit, adopts the above technical scheme, and can achieve the following

[0013] Beneficial effects:

[0014] 1) The utility model is a method in which multiple electrical devices share differentiated batteries, which achieves the consistency of the backup time of each device and reduces the required battery capacity;

[0015] 2) The utility model realizes the separation of charging and discharging by connecting diodes in parallel to the charging and discharging ends of the battery, realizes the parallel use of multiple differentiated batteries, and realizes the centralized supply and discharge of multiple differentiated batteries;

[0016] 3) The utility model separates load power consumption and battery charging into two independent power sources, and reduces the capacity of the charger and conventional power source through the main-standby dual power automatic conversion switch, thereby reducing system costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the structure of the shared power circuit of the intelligent bus shelter equipment of the utility model.

[0019] In the figure: 1. power storage power supply module, 110. power storage power supply unit, 111. first diode, 112. second diode, 113. battery, 2. dual power automatic switching switch, 3. first line protector, 4. second line protector, 5. surge protector, 6. first power supply branch, 7. second power supply branch, 8. third line protector, 9. first power supply AC / DC, 10. fourth line protector, 11. second power supply AC / DC, 12. electrical equipment.

[0020] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. The terms such as "upper", "lower", "left", "right", "middle" and "one" used in the preferred embodiments are only used to facilitate the description, and are not used to limit the scope of the implementation of the present invention. The changes or adjustments in their relative relationships shall also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0022] like Figure 1 As shown, the utility model provides a shared power circuit for intelligent bus shelter equipment, including a dual-power automatic switching switch 2, wherein the dual-power automatic switching switch 2 has two power input terminals and one power output terminal, and the dual-power automatic switching switch 2 can automatically switch the power output terminal to be connected to any one of the two power input terminals through a switching action;

[0023] The two power input terminals are respectively connected to a first power supply branch 6 and a second power supply branch 7 connected in parallel to the mains power supply line, the first power supply branch 6 is connected in series with a first power supply AC / DC9, the second power supply branch 7 is connected in series with a second power supply AC / DC11 and a power storage power supply module 1, and the power storage power supply module 1 is located at the output side of the second power supply AC / DC11; the power output terminal is connected to a plurality of power-consuming devices 12, and the plurality of power-consuming devices 12 are arranged in parallel. The power-consuming devices 12 have the function of consuming electric energy, and in the smart bus shelter, they refer to LCD interactive display screens, LCD information release screens, LED forecast station display screens, cameras, network devices, Android hosts, fan radiators, etc.

[0024] The power storage power supply module 1 includes three power storage power supply units 110 which are arranged in parallel in the second power supply branch 7 and are unidirectionally current-conducting. Each of the power storage power supply units 110 includes a battery 113, a first diode 111 and a second diode 112. The first diode 111 and the second diode 112 are connected in series in sequence to form a unidirectional conduction circuit. The current conduction direction of the unidirectional conduction circuit is from the second power supply AC / DC11 to the dual-power automatic switching switch 2. The anode of the first diode 111 is connected to the second power supply AC / DC11, and the cathode of the second diode 112 is connected to the dual-power automatic switching switch 2. The charging and discharging ports of the battery 113 are connected to the circuit between the first diode 111 and the second diode 112.

[0025] The dual power automatic switching switch 2 can be selectively connected to the first power supply branch 6 or the second power supply branch 7 through the switching action, wherein the first power supply AC / DC9 and the second power supply AC / DC11 have the function of converting AC to DC and the corresponding electrical protection function. When the dual power automatic switching switch 2 is switched to connect to the first power supply branch 6, the AC200V provided by the mains is converted to DC by the first power supply AC / DC9 and output to the power output end; when the dual power automatic switching switch 2 is switched to connect to the second power supply branch 7, the AC200V provided by the mains is converted to DC by the first power supply AC / DC9, which can charge the battery 113 of each power storage power supply unit 110 and can also be directly output to the power output end. In addition, when the mains stops providing AC200V, the battery 113 outputs DC to the power output end. The battery of the utility model has a power storage function and can realize charging and discharging functions. It includes iron-lithium batteries, lead-acid batteries, supercapacitors, etc.

[0026] In order to improve the safety and reliability of power supply, the intelligent bus shelter equipment shared power circuit is also equipped with the following protection structure:

[0027] The mains power supply line is connected in series with a first line protector 3, and the alternating current provided by the mains is output to the first power supply branch 6 and the second power supply branch 7 through the first line protector 3. The first line protector 3 is a circuit breaker, a leakage protection switch or a fuse. The mains power supply line is connected with a grounding protection line, and the grounding protection line is connected in series with a second line protector 4 and a surge protector 5. The second line protector 4 is a circuit breaker, a leakage protection switch or a fuse.

[0028] The first power supply branch 6 is also connected in series with a third line protector 8, which is located at the input side of the first power source AC / DC 9, and is a circuit breaker, a leakage protection switch or a fuse.

[0029] The second power supply branch 7 is also connected in series with a fourth line protector 10, which is located at the input side of the second power source AC / DC 11. The fourth line protector 10 is a circuit breaker, a leakage protection switch or a fuse.

[0030] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to the embodiments without departing from the principles and essence of the present invention. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A shared power circuit for intelligent bus shelter equipment, characterized in that: It includes a dual power automatic switching switch, the dual power automatic switching switch has two power input terminals and one power output terminal, and the dual power automatic switching switch can automatically switch the power output terminal to be connected to any one of the two power input terminals through a switching action; The two power input ends are respectively connected to a first power supply branch and a second power supply branch connected in parallel to the mains power supply line, the first power supply branch is connected in series with a first power supply AC / DC, the second power supply branch is connected in series with a second power supply AC / DC and a power storage power supply module, and the power storage power supply module is located at the output side of the second power supply AC / DC; The power storage power supply module includes a plurality of power storage power supply units which are arranged in parallel in the second power supply branch and conduct current in one direction. Each of the power storage power supply units includes a battery, a first diode and a second diode. The first diode and the second diode are connected in series in sequence to form a one-way conduction circuit. The current conduction direction of the one-way conduction circuit is from the second power supply AC / DC to the dual power supply automatic switching switch. The charging and discharging ports of the battery are connected to the circuit between the first diode and the second diode.

2. The intelligent bus shelter equipment shared power circuit according to claim 1 is characterized in that: A first line protector is connected in series on the mains power supply line, and the AC power provided by the mains is output to the first power supply branch and the second power supply branch via the first line protector. The first line protector is a circuit breaker, a leakage protection switch or a fuse.

3. The intelligent bus shelter equipment shared power circuit according to claim 1 is characterized in that: The commercial power supply line is connected with a grounding protection line, and a second line protector and a surge protector are connected in series in the grounding protection line. The second line protector is a circuit breaker, a leakage protection switch or a fuse.

4. The intelligent bus shelter equipment shared power circuit according to claim 1 is characterized in that: The first power supply branch is also connected in series with a third line protector, which is located at the input side of the first power supply AC / DC and is a circuit breaker, a leakage protection switch or a fuse.

5. The intelligent bus shelter equipment shared power circuit according to claim 1 is characterized in that: The second power supply branch is also connected in series with a fourth line protector, which is located at the input side of the second power supply AC / DC and is a circuit breaker, a leakage protection switch or a fuse.

6. The intelligent bus shelter equipment shared power circuit according to any one of claims 1 to 5, characterized in that: The power output end is connected to a plurality of electrical devices, and the plurality of electrical devices are arranged in parallel.

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