CN203761108U - Four-channel charging power supply - Google Patents

Abstract

A four-channel charging power supply comprises an input voltage interface, a battery pack input interface, a three-way direct-current voltage output interface, a main power unit, a battery charging unit and an output filtering unit. Compared with the prior art, the four-channel charging power supply has the advantages that multi-channel output is added; the number of power supplies for vehicle-mounted testing equipment can be reduced; the four-channel charging power supply has a charging function, so that single vehicle-mounted testing equipment can be charged, electric energy can be conveniently provided continuously, and the cruising ability of the vehicle-mounted testing equipment is improved; and moreover, the four-channel charging power supply has a battery power supplying function, the vehicle-mounted testing equipment can work continuously under the condition that an external power source of the equipment is opened, and the power is converted into power supply voltage required by electric appliances.

Description

Four-way charging power supply

Technical field

The utility model relates to a kind of power supply, particularly a kind of 300W four-way charging power supply.

Background technology

Urban track traffic is the backbone of urban public transport.That it has is energy-conservation, economize ground, freight volume large, round-the-clock, pollution-free (or of low pollution) feature such as safety again, belongs to environmental protection railway and highway system, has obtained very fast development in the whole world, and China builds up or building urban track traffic in existing more than 30 city.Urban track traffic is equipped in China and has also obtained development fast, become the important pillar industry of country, but a lot of key technologies and key equipment still need to be from external imports, as train network technology, Traction Drive technology, Train Control Technology etc., introduction cost is high, maintenance difficulties is large, causes the loss of a large amount of foreign exchanges.The production domesticization of therefore, urban track traffic art and the equipment trend that is inevitable.Technology based on above-mentioned and industry development background, situation in conjunction with current vehicle-mounted testing equipment power supply, I have proposed a kind of 300W four-way charging power supply, on the basis of the vehicle-mounted testing equipment power supply of existing single channel, am increased to four tunnels outputs with charge function and with the integration power supply power supply of powered battery function.Realize the functions such as vehicle-mounted testing power supply output multichannel, chargeableization, powered battery.

Utility model content

Goal of the invention of the present utility model is to provide a kind of four-way output, with the power supply of charge function and powered battery function, realizes the functions such as vehicle-mounted testing power supply output multichannel, chargeableization, powered battery, and its concrete technical scheme is:

Four-way charging power supply, comprises input voltage interface, battery pack input interface, three road direct voltage output interfaces, main power cell, battery charging unit and output filtering unit;

Main power cell is inputted by the interchange connecting successively, EMI filtering, rectifying and wave-filtering and power conversion unit form, output 24V direct voltage, power conversion unit PWM controls and adopts N1-SJ1525AJ chip, power conversion unit to adopt the GBT switching tube of V11-30N60 or V12-30N60 to do the semi-bridge type Switching Power Supply of main circuit;

Battery charging unit comprises charhing unit, alternating current-direct current switch unit and power supply circuits, comprise the charging indicator light control circuit that N3-PH300S280-24 high-voltage power module and N6-LM258 chip form, between N3-PH300S280-24 high-voltage power module and battery, be provided with relay K 1;

Output two-way 24V VD He Yi road, output filtering unit 20V direct voltage.

The beneficial effect that the present invention compared with prior art has is as follows: increased multichannel output, can reduce the quantity of vehicle-mounted testing equipment power supply; With charge function, realize single vehicle-mounted chargeableization of testing equipment, be convenient to provide continuable power supply electric energy, increased the flying power of vehicle-mounted testing equipment; Possess powered battery function, in the situation that device external power supply disconnects, can guarantee the sustainable work of vehicle-mounted testing equipment, and change into the needed supply power voltage of electrical appliance by this power supply.

Accompanying drawing explanation

The schematic block circuit diagram of Fig. 1 four-way charging power supply;

Fig. 2 exchanges input, EMI filtering, rectifying and wave-filtering and main power cell schematic diagram;

Fig. 3 charging circuit schematic diagram;

Fig. 4 output filtering plate circuit.

Embodiment

The embodiment setting forth below represents and allows those skilled in the art to put into practice necessary information of the present utility model, and illustrates and put into practice best mode of the present utility model.Once read with reference to the accompanying drawings following description, those skilled in the art just will understand design of the present utility model and will recognize the application of these designs of not illustrating especially herein.Should be appreciated that these designs and application fall into the scope of disclosure and the accompanying claims book.

Four-way charging power supply described in the present embodiment, AC-input voltage is 220V, VD is respectively 24V (I), 24V (II) He20V tri-road output voltages, the power output on each road is respectively 10W, and 30W (instantaneous power 150W) and 90W power also can provide a road charging output simultaneously, during Alternating Current Power Supply, this output can be battery charging; Exchange while disconnecting, battery starts power supply.This output constant voltage charge voltage is 25.2V, and constant current charge electric current is 5A.Casing of the present utility model, cooling system integrated design, main radiator adopts casing to make radiator, and surrounding and base plate are all to adopt the aluminium radiator that there is no radiation tooth, and they form integral heat radiator design jointly.External interface comprises: external interface comprises: input voltage interface (tri-line interfaces of 220V), battery pack input interface (connector Y50DX-1204ZK1), 24V (I) output interface (connector Y50DX-1204ZK10), 24V (II) export (connector Y50DX-1204ZK10), and 20V exports (connector Y50DX-1204ZK10).

Complete machine work as shown in Figure 1, after alternating current 220V power supply electrifying, internal auxiliary power supply work, then power circuit and battery charger start simultaneously, in battery pack when access,, power supply provides charging voltage and the electric current of maximum 25.2V/5A for battery.The output voltage of main power is sent to output filtering plate, and by the circuit of output filtering plate, is divided into three tunnel outputs.When exchanging input and disconnect, battery provides power supply for power supply inside, and cell voltage is sent to output filtering plate after voltage stabilizing, guarantees the continued power of three road output voltages.

Fig. 2 is for exchanging input, EMI filtering, rectifying and wave-filtering and main power cell schematic diagram, the main device of ac input circuit comprises fuse F1, switch S 1, power-supply filter Z1, rectifier bridge V1, thermistor R12, R13 forms, and has realized interchange input function, after rectifying and wave-filtering, the direct voltage of obtain+300V, respectively whereabouts main power circuit and charging circuit.Main power circuit is to use integrated circuit N1-SJ1525AJ to be PWM to control, and the Switching Power Supply of using IGBT switching tube V11, V12-30N60 to do the semi-bridge type topology of main circuit realizes.

Fig. 3 is charging circuit schematic diagram.The high-voltage power module N3-PH300S280-24 that uses Japanese LAMBDA company to produce, by building external circuit, and the output current of sampling, control output voltage and charging current.If the R3 in figure is current sampling resistor, the current signal sampling is delivered to the input of operational amplifier N5-LM258, after amplifying, then after comparing with reference voltage, by resistance R 19, control the conducting resistance of triode V2.Because triode V2 the has connected whereabouts output voltage adjustable side of power module, the conducting resistance of change V2, i.e. the output voltage of adjustable power module, has realized the function of output constant current constant voltage, meets the charging demand of battery.The circuit consisting of operational amplifier N6-LM258 and peripheral resistance capacitance is charging indicator light control circuit, and after battery is full of, charging indicator light is shown in green, in charging process, shown in red.Relay K 1 has realized after AC dump, battery powered function.During Alternating Current Power Supply, inner auxiliary power supply circuit working, output+12V voltage, can allow relay K 1 adhesive, and by the disconnection that is connected between direct current output module N1-PAH350S24-28 and battery, now, charging circuit work, is battery charging; When exchange disconnecting ,+12V auxiliary power supply without, relay unclamps, battery is connected with direct current output module, by power module N1-PAH350S24-28 and peripheral voltage regulator circuit, obtains the voltage that 24V exports, and delivers to output filtering plate.

Fig. 4 is output filtering plate circuit.The circuit that 24V input voltage is different, obtains respectively three tunnel outputs, meets the output requirement of power supply.Wherein N2-HZD15C-24S24 is an output 15W, 24V turns the power module of 24V output, the direct current output of by input filter circuit and output filter circuit, obtained+24V (I)/10W.24V voltage after the filtering of capacitor C 7-C14, direct whereabouts out connector, the direct current output of obtained+24V (II)/30W (peak value 150W).24V voltage is by three terminal regulator N1-LM317, triode Q1, Q2, resistance R 5-R9, capacitor C 1-C6, potentiometer RP1, the linear voltage-stabilizing circuit that diode D1 is built into, be depressurized to+20V output voltage, the direct current output of obtained+20V/90W.

Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And these belong to apparent variation that spirit of the present utility model extended out or change still among protection range of the present utility model.

Claims (1)

1. four-way charging power supply, comprises input voltage interface, battery pack input interface, three road direct voltage output interfaces, main power cell, battery charging unit and output filtering unit; It is characterized in that:

Main power cell is inputted by the interchange connecting successively, EMI filtering, rectifying and wave-filtering and power conversion unit form, output 24V direct voltage, power conversion unit PWM controls and adopts N1-SJ1525AJ chip, power conversion unit to adopt the GBT switching tube of V11-30N60 or V12-30N60 to do the semi-bridge type Switching Power Supply of main circuit;

Battery charging unit comprises charhing unit, alternating current-direct current switch unit and power supply circuits, comprise the charging indicator light control circuit that N3-PH300S280-24 high-voltage power module and N6-LM258 chip form, between N3-PH300S280-24 high-voltage power module and battery, be provided with relay K 1;

Output two-way 24V VD He Yi road, output filtering unit 20V direct voltage.