RU214915U1 - Charger - Google Patents

Abstract

The utility model relates to devices for charging with electricity various battery devices, mainly vehicles, such as electric scooters, bikes, etc., implemented on the basis of complete switchgears for power supply, mainly road / outdoor lighting. The charger contains a controller 1 with an interface unit 2 for connection to a superior control system and n≥1 channels 19 for power generation. Interface block 2 is made with a bidirectional two-wire interface 16 with the ability to connect to an external DALI bus, and each of the channels 19 has input busses of phase 13 (L) and zero 14 (N) and output busses 15, while each channel 19 is equipped with a differential current transformer 11 with common-mode windings, to which output buses 15 are connected on one side, and on the other hand, contactors connecting the corresponding common-mode windings to the input buses of phase 13 and zero 14, the output tires 15 are connected to a voltage meter 10, the output of which is connected to the input ( f) controller 1, the secondary winding of the transformer 11 is connected to a differential current control amplifier 9, the output of which is connected to the input (d) of the controller 1, the input buses 13 and 14 are connected to the input voltage meter 3, the output of which is connected to the input (g) of the controller 1 , the input bus 13 contains a built-in current shunt 6, the ends of which are connected to the current meter 8 and the commercial electricity metering unit 7, the outputs of which are connected to the inputs (e, b) of the controller 1, and the commercial electricity metering unit 7 is also connected to the input bus 14. The on/off contactors of the channels 19 are made in the form of an electromechanical relay 4 built into the bus 14 and a solid state relay 5 built into the bus 13 , the inputs of which are connected to the corresponding control outputs (a, c) of the controller 1. The technical result is the possibility of using the charger in distributed digital systems based on lighting objects using the DALI protocol profiled for them. 3 ill.

Description

The utility model relates to devices for charging with electricity various battery devices, mainly vehicles, such as electric scooters, bikes, etc., implemented on the basis of complete switchgear for power supply, mainly road/outdoor lighting.

The development of various types of electric transport has necessitated the organization of branched networks within walking distance for charging such vehicles. However, the analysis showed that the known technical solutions do not fully meet the indicated need.

Known is a vehicle charger of a multi-channel structure, which can charge using a plurality of charging taps connected to one main module, can control the charge level using each of the charging taps, and contains: a relay module connected to the power supply module for supplying power from the outside for supplying power to the vehicle for charging, a branch connection block for separately connecting a plurality of charging channels branched from the relay module, a distribution block for determining the power distribution ratio according to the number of charging channels detected by the branch connection block, one or more branches connected to the block connecting taps, and a communication setting unit for setting up communication between each of the charging taps and the relay module, while the charging taps are designed to be connected to the charging cables of the vehicles being charged (KR patent No. 1019508750000 B1, published on February 21, 2019).

The disadvantages of the analog should include the complexity and high cost of organizing branched networks within walking distance for charging vehicles based on it.

Closest to the claimed - the prototype - is a charger containing, among other things, a controlled controller with an interface unit for connecting to a higher-level control system and having n≥1 power output channels, each of which has input and output phase and zero buses, turn-on contactors power distribution channels connected to the control outputs of said controller, current meters and commercial electricity metering units. This charger is part of a vehicle charging system that contains a transformer substation, for example, a kiosk type, in which are located connected by cable lines: a power transformer; high voltage switchgear block; low voltage switchgear block; and at least one AC or DC charging station with a terminal for connecting an electric vehicle to a charging station, wherein said at least one charging station is connected to an industrial logic controller unit to limit the loading of the charging station, and the industrial logic controller unit is made with an RS bus interface -485, so that the industrial logic controller unit reads information about the absolute values of phase currents in the circuit at the output of the power transformer via the RS-485 bus from phase current sensors, using current transformers (RF patent No. 2608387 C1, publ. 01/18/2017).

The disadvantages of the prototype, as well as analogues, include the complexity and high cost of organizing branched networks within walking distance for charging vehicles based on it.

It seems expedient to use as a basis for organizing branched networks of walking distance for charging vehicles a power supply system and road/outdoor lighting control using the DALI protocol profiled for it. The advantages of using a lighting control system in order to organize branched networks within walking distance for charging vehicles include its presence almost everywhere (there is no need to create a new network), a very wide and dense branching, ease of placement of the corresponding devices / blocks on supports, brackets, panels etc. lighting, its reliability and noise immunity, while the existing road / outdoor lighting control system is quite capable of taking on itself, in addition to the control, a number of auxiliary functions, including but not limited to interaction with client physical and / or virtual terminals via Ethernet, Wi- Fi etc. It should also be noted that the power supply and control system for road / outdoor lighting using the DALI profile protocol for it has already found wide application for organizing various services based on it (see, for example, US patents No. 11197360 B1, RU No. 211317 U1, etc. ).

The technical problem is the elimination of the above disadvantages of the known technical solutions.

The technical result consists in providing the possibility of using the charger in distributed digital systems based on lighting objects using the DALI protocol profiled for them.

The problem is solved, and the technical result is achieved by the fact that in a charger containing a controller with an interface unit for connecting to a higher-level control system and having n≥1 power output channels, each of which has phase and zero input buses and output tires, channel switching contactors power output connected to the control outputs of the said controller, current meters and commercial power metering units, the interface unit is made bidirectional two-wire with the ability to connect to an external DALI bus, each power output channel is equipped with a differential current transformer with common-mode windings, to which outputs are connected on one side tires, and on the other hand - contactors connecting the corresponding common-mode windings with the phase and zero input buses, while the output tires are connected to a voltage meter, the output of which is connected to the corresponding information input of the controller, the secondary winding is a differential current transformer is connected to a differential current control amplifier, the output of which is connected to the corresponding information input of the controller, the phase and zero input buses are connected to the input voltage meter, the output of which is connected to the corresponding information input of the controller, the phase input bus contains a built-in current shunt, the ends of which are connected with a current meter and a commercial electricity metering unit, the outputs of which are connected to the information inputs of the said controller, and the commercial electricity metering unit is also connected to the zero input bus, in addition, the contactors are made in the form of an electromechanical relay built into the zero input bus and a phase built into the input bus solid state relay, the inputs of which are connected to the corresponding control outputs of the controller.

The utility model is illustrated by pictures showing

in FIG. 1 is a schematic diagram of the claimed charger;

in FIG. 2 - an example of execution of the charger controller interface block;

in FIG. 3 - conditional diagram of contacts of the controller of the charger for connecting n> 1 channels of power output.

The numeric positions in the images mean the following

1 - controller;

2 - DALI interface block;

3 - input voltage meter;

4 - electromechanical relay;

5 - solid state relay;

6 - current shunt;

7 - block of commercial electricity metering;

8 - current meter;

9 - differential current control amplifier;

10 - output voltage meter;

11 - differential current transformer;

12 - transistor control key of the electromechanical relay;

13 - phase input bus (L);

14 - input bus zero (N);

15 - output tires (to the consumer of electricity);

16 - bidirectional two-wire interface with the ability to connect to an external DALI bus;

17 - wire T _x DALI (output from the controller);

18 - wire R _x DALI (input to the controller);

19 - channel for the issuance of electricity;

20 - phase input of the input voltage meter;

21 - zero input of the input voltage meter,

Latin letters a, b, c, d, e, f, g, h, k indicate the inputs and outputs of the controller 1 corresponding to the description below.

In accordance with the claimed utility model, the charger contains a controller 1 with an interface unit 2 for connection to a superior control system (not shown) and n≥1 channels 19 for power generation (Fig. 1). Interface block 2 is made with a bidirectional two-wire interface 16 with the ability to connect to an external DALI bus and is a standard diode bridge, a pair of opposite vertices of which forms the mentioned bidirectional two-wire interface 16, and a pair of other opposite vertices through the connected transistor optocouplers forms the wire T _x DALI 17 - signal output from controller 1, and wire R _x DALI 18 - signal input to controller 1 (Fig. 2). It is advisable at the input from the power line of the lighting supply (not shown) to the input buses of phase 13 and zero 14 to introduce an input voltage meter 3, the inputs 20 and 21 of which, like the input buses of phase 13 and zero 14 of the channels 19 of the power output, are respectively connected to the phase and zero of the power line of the lighting supply, and the output is connected to the corresponding information input (g) of the controller 1. Each of the channels 19 of the power output has input buses of phase 13 (L) and zero 14 (N) and output tires 15 (to consumers of electricity, which not shown in images). In this case, each channel 19 of the power output is equipped with a differential current transformer 11 with common-mode windings, to which, on the one hand, output buses 15 are connected, and on the other hand, contactors connecting the corresponding common-mode windings to the input buses of phase 13 and zero 14, while the output tires 15 are connected to a voltage meter 10, the output of which is connected to the corresponding information input (f) of the controller 1. The secondary winding of the differential current transformer 11 is connected to a differential current control amplifier 9, the output of which is connected to the corresponding information input (d) of the controller 1. Phase input bus 13 contains a built-in current shunt 6, the ends of which are connected to the current meter 8 and the commercial electricity metering unit 7, the outputs of which are connected to the information inputs (respectively e and b) of the said controller 1, and the commercial electricity metering unit 7 is also connected to the zero input bus 14 Closing contactors /off channels 19 of power generation are made in the form of an electromechanical relay 4 built into the input bus of zero 14 and a solid state relay 5 built into the input bus of phase 13, the inputs of which (electromechanical relay 4 - through a transistor switch 12, and solid state relay 5 - directly) connected to corresponding control outputs (a and c, respectively) of the controller 1. As follows from the formula of the utility model, the charger can contain from 1 to n channels 19 for the generation of electricity, each of the channels 19 is connected to an external power source via input buses 13 and 14 ( in particular, the road / outdoor lighting power supply system), and the inputs / outputs are identical to those described above, connected to the corresponding inputs / outputs a, ..., a _n ; b, …, b _n ; c, ..., c _n ; d, …, d _n ; e, ..., e _n ; f, ..., f _n controller 1 (Fig. 3). The number n of connected channels 19 is limited by the number of corresponding inputs/outputs of the controller 1.

The claimed charger works as follows.

The controller 1 operates under the control of the superior processor of the distributed digital control system based on the road / outdoor lighting control system, communicating with it through the interface unit 2 via the DALI bus. Let's consider the operation of one channel 19 for power generation. For each of its output tires 15, channel 19 provides bipolar switching, in neutral - with an electromechanical relay 4, in phase - with a solid state relay 5. To turn on an external load (consumer) on the output tires 15, the controller 1 first turns on the electromechanical relay 4 through the corresponding transistor switch 12 , then solid state relay 5. Disconnection is done in reverse order. In addition to the on/off function, the solid state relay 5 performs the function of protecting the upstream lighting power supply line from its emergency shutdown in case of excess current load (for example, a short circuit) at the consumer level. Experiments have shown that, due to the speed of the solid state relay, controller 1 turns off channel 19 faster than the conditions are created for the operation of its own protection of the higher power power line of the lighting supply, and in the case of replacing solid state relay 5 with an electromechanical relay similar to relay 4, the reaction speed decreases, and its own the protection of the upstream power line of the lighting power supply is activated, which makes the reliability of the entire power supply system and control of road / outdoor lighting, including other services organized on its basis, dependent on the charger. In addition, the current flowing to the output bus 15 through the circuit from the input bus of phase 13 is operatively controlled by the current meter 8 on the current shunt 6, and when it is exceeded, the controller 1 makes a decision on emergency shutdown by removing the control signal from the solid state relay 5. The same current , having passed through the external load (consumer), it returns through the circuit to the zero bus 14, and in the differential current transformer 11 the indicated currents are mutually subtracted, while in the secondary winding of the transformer a voltage is formed proportional to the difference of these currents. The differential voltage is supplied to the differential current control amplifier 9 and then to the corresponding information input (d) of the controller 1. Exceeding the predetermined/calculated threshold by the voltage level corresponds to a significant current leakage in the load and is a reason for emergency shutdown. The block (microcircuit) of commercial electricity metering 7, measuring the voltage values on the one hand on the current shunt 6, and on the other hand between the phase 13 and zero 14 buses, carries out accurate commercial accounting of the supplied electricity. The measurement data enters the controller 1. The charger (many chargers) is placed in a housing that is installed on/in the elements of the lighting infrastructure, mainly on/in road lighting poles at the required height, convenient for connecting the vehicle, input buses 13 and 14 corresponding it is connected in a way to the lighting power supply line (standard - 220V AC), and by interface 16 to an external two-wire bidirectional DALI bus of a distributed digital control system based on a road / outdoor lighting control system. The output busses 15 are configured as appropriate connectors/sockets for the charging cables of the serviced vehicles.

The simplicity of the solution and the possibility of using it in distributed digital control systems based on a lighting control system with a DALI interface provides the claimed technical result and the benefits of using this utility model. The conducted field experiments and the results of computer simulation showed that the claimed charger fully allows its use in distributed digital systems based on lighting objects using the DALI profile protocol for them, providing the required quality, reliability and safety.

The foregoing allows us to conclude that the identified problem has been solved, and the claimed technical result - enabling the use of the charger in distributed digital systems based on lighting objects using the DALI protocol profiled for them - has been achieved.

Claims (1)

A charger containing a controller with an interface unit for connection to a higher-level control system and having n≥1 power output channels, each of which has phase and zero input buses and output buses, contactors for switching on power output channels connected to the control outputs of the said controller, meters current and a commercial electricity metering unit, characterized in that the interface unit is made bidirectional two-wire with the ability to connect to an external DALI bus, each power output channel is equipped with a differential current transformer with common-mode windings, to which output buses are connected on one side, and on the other side - contactors connecting the corresponding common-mode windings with the phase and zero input buses, while the output tires are connected to a voltage meter, the output of which is connected to the corresponding information input of the controller, the secondary winding of the differential current transformer is connected to the differential differential current control amplifier, the output of which is connected to the corresponding information input of the controller, the phase and zero input buses are connected to the input voltage meter, the output of which is connected to the corresponding information input of the controller, the phase input bus contains a built-in current shunt, the ends of which are connected to the current meter and the block commercial metering of electricity, the outputs of which are connected to the information inputs of the said controller, and the block of commercial metering of electricity is also connected to the zero input bus, in addition, the contactors are made in the form of an electromechanical relay built into the zero input bus and a solid-state relay built into the phase input bus, the inputs of which connected to the corresponding control outputs of the controller.

Images