CN202513610U - Charging device - Google Patents

Charging device Download PDF

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Publication number
CN202513610U
CN202513610U CN2012200574430U CN201220057443U CN202513610U CN 202513610 U CN202513610 U CN 202513610U CN 2012200574430 U CN2012200574430 U CN 2012200574430U CN 201220057443 U CN201220057443 U CN 201220057443U CN 202513610 U CN202513610 U CN 202513610U
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CN
China
Prior art keywords
circuit
charging
voltage
output
electric energy
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CN2012200574430U
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Chinese (zh)
Inventor
王瑞智
庞栋
费薇
刘庆
汪望勤
史红利
Original Assignee
郑州佛光发电设备有限公司
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Priority to CN2012200574430U priority Critical patent/CN202513610U/en
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Publication of CN202513610U publication Critical patent/CN202513610U/en

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Abstract

The utility model relates to a charging device, which is used for charging a storage battery under field conditions. The charging device comprises a voltage sampling circuit used for detecting and determining a voltage of an electric storage device, wherein an input end of the voltage sampling circuit is connected with an output end of the charging device, the acquired voltage data is transmitted to a single-chip microcomputer control circuit for analytical processing, and the analytically processed data is transmitted to a secondary chopping circuit for controlling the output thereof; and an output sampling current circuit is connected with an output end of a secondary DC filter circuit, the acquired output current data is transmitted to the single-chip microcomputer control circuit for analytical processing, and the analytically processed data is transmitted to the secondary chopping circuit for controlling the output thereof. The charging device has the functional characteristics such as constant voltage, constant current, trickle floating charge, automatic stopping when being fully charged, and short circuit withstand; the charging device is a DC14V/28V charging automatic converting type, has simple operation, and can effectively prevent the storage battery and a charger from being damaged by operational errors.

Description

Charging device

Technical field

The invention belongs to dynamo-electric, electric control technology field, be specifically related to a kind of charging device, it is mainly used in trailer power station, is implemented under the field condition storage battery is charged.

Background technology

To the power supply of the start-up system of equipments such as vehicle mostly be charging generator, its switching energy process is numerous and diverse backward in technique, is substituted gradually; And its IGBT inverter fails to form control combination with microcomputer, and its technological corresponding relation is also more single, thereby can not be applied to the equipment of the tape starting device of different capacity, different capabilities; In current charging device, need constant voltage, constant current, trickle floating charge when electric energy storage device is charged, be full of and stop automatically behind the electricity and the functional characteristic of Short Circuit withstand, but fail mostly in the middle of the practical application to realize that technology is loaded down with trivial details; By it is the information state that can not detect charging voltage, electric current automatically, can not automatically switch and charges to various electric energy storage device; Integrated circuit plate in the middle of the existing in addition charging device is mostly very big because of the moist probability of damaging, and Corrosion Protection is poor, and the anti-vibration performance is not good enough.

Summary of the invention

The objective of the invention is to solve the above-mentioned middle technical problem that exists and a kind of charging device is provided; Be mainly used in trailer power station; Be implemented under the field condition storage battery is charged, it can be two kinds of different voltages with different grades of DC12V/24V according to industry equipment DC power supply when charging, and the voltage of discerning charging accumulator automatically is 12V or 24V; Thereby export corresponding charging voltage, realize generalization the charging of 12V/24V DC power supply.

Technical scheme of the present invention is achieved in that

Charging device; The outside three-phase alternating current of this device input; Control is coupled in the electric energy storage device on the charging device; Comprise ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, UC voltage stabilizing circuit, voltage feedback circuit, secondary chopper circuit, second DC filtering circuit and the single chip machine controlling circuit; External power source is storage battery output charging through ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, secondary chopper circuit, the second DC filtering circuit successively, and the control of UC voltage stabilizing circuit exports the DC/DC translation circuit to, also is connected with voltage feedback circuit through the first DC filtering circuit; The UC voltage stabilizing circuit is connected to form closed loop with voltage feedback circuit again; The first DC filtering circuit is connected in single chip machine controlling circuit and for it working power is provided, and it is characterized in that: also have the voltage sampling circuit that is used to detect, judge electric energy storage device voltage, its input is connected in this charging device output; The voltage data of gathering is transferred to single chip machine controlling circuit carry out analyzing and processing, the data with analyzing and processing are sent to its output of secondary chopper circuit control again; Be connected with output sample rate current circuit at the second DC filtering circuit output end, again the output current data of gathering transferred to single chip machine controlling circuit and carry out analyzing and processing, the data with analyzing and processing are sent to its output of secondary chopper circuit control again; On single chip machine controlling circuit, be connected with overvoltage, short-circuit protection circuit.

Charging device detects the voltage of gathering electric energy storage device through voltage sampling circuit and in sending into sheet machine control circuit, judges it is 12V or 24V through single chip machine controlling circuit; And the required voltage of control circuit output; When electric energy storage device was 12V voltage, this charging device was with the constant voltage output charging of 13.8V; When electric energy storage device was 24V voltage, this charging device was with the constant voltage output charging of 27.6V.

Charging device comprises that following state charges:

(1) constant current is filled soon

When the voltage that is filled electric energy storage device was lower than set point (12V electric energy storage device < 12V or 24V electric energy storage device < 24V), charging device carried out quick charge with the constant electric current of maximum to electric energy storage device;

(2) current limliting

When (when 12V electric energy storage device >=12V or 24V electric energy storage device >=24V), charging stream limits automatically when being full of by the electric energy storage device that filled;

(3) trickle floating charge

When being reached the floating charge set point by the voltage of the electric energy storage device that filled, when (the 12V electric energy storage device is about 13.8V or the 24V electric energy storage device is about 27.6V), then transfer floating charge state automatically to, promptly the electric current with about 0.1-0.2A charges;

(4) stop filling

When the voltage of electric power storage electric energy storage device reached full set point (the 12V electric energy storage device is that 14V or 24V electric energy storage device are 28V), charging device then automatically shut down charging output.

The inner circuit board of charging device adopts the epoxy resin embedding.

The voltage detecting circuit inside of described charging device is provided with two voltage comparators, and charging voltage is carried out the dividing potential drop feedback through divider resistance.

Good effect of the present invention:

The equipment DC power supply of the industry is two kinds of DC12V/24V, according to the different voltages with different grade, needs different chargers; We have researched and developed this system for this reason, discern the different voltages of 12V/24V automatically, thereby export corresponding charging voltage; Promptly realized the DC power supply 12V/24V generalization problem of the industry, through using, this systematic function is reliable; Working stability, and this charging device is the design of 12V/24V charge in batteries specially, has constant voltage, constant current, trickle floating charge, be full of automatically stop, functional characteristic such as Short Circuit withstand; The DC14V/28V automatic change type that charges; Simple to operate, can effectively prevent because of storage battery that operate miss causes, charger damage, be at present domesticly uniquely can detect charging voltage, electric current automatically, and realize the charging device that automaticallyes switch.

Description of drawings

Fig. 1 is the circuit block connection layout of this charging device.

Fig. 2 is the charging characteristic curve figure of this charging device.

Fig. 3 is the electrical schematic diagram of this charging device.

Fig. 4 is the winding diagram of this charging device.

Fig. 5 is the circuit diagram of charging device in this.

Embodiment

As shown in the figure; This startup, charging device are used under the condition storage battery being charged in the open air; Charging device; The outside three-phase alternating current of this device input; Control is coupled in the electric energy storage device on the charging device, comprises ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, UC voltage stabilizing circuit, voltage feedback circuit, secondary chopper circuit, second DC filtering circuit and the single chip machine controlling circuit, and external power source is storage battery output charging through ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, secondary chopper circuit, the second DC filtering circuit successively; The control of UC voltage stabilizing circuit exports the DC/DC translation circuit to; Also be connected with voltage feedback circuit through the first DC filtering circuit, the UC voltage stabilizing circuit is connected to form closed loop with voltage feedback circuit again, and the first DC filtering circuit is connected in single chip machine controlling circuit and for it working power is provided; Also has the voltage sampling circuit that is used to detect, judge electric energy storage device voltage; Its input is connected in this charging device output, the voltage data of gathering is transferred to single chip machine controlling circuit carry out analyzing and processing, and the data with analyzing and processing are sent to its output of secondary chopper circuit control again; Be connected with output sample rate current circuit at the second DC filtering circuit output end, again the output current data of gathering transferred to single chip machine controlling circuit and carry out analyzing and processing, the data with analyzing and processing are sent to its output of secondary chopper circuit control again; On single chip machine controlling circuit, be connected with overvoltage, short-circuit protection circuit.

Charging device detects the voltage of gathering electric energy storage device through voltage sampling circuit and in sending into sheet machine control circuit, judges it is 12V or 24V through single chip machine controlling circuit; And the required voltage of control circuit output; When electric energy storage device was 12V voltage, this charging device was with the constant voltage output charging of 13.8V; When electric energy storage device was 24V voltage, this charging device was with the constant voltage output charging of 27.6V.

Charging device comprises that following state charges:

(1) constant current is filled soon

When the voltage that is filled electric energy storage device was lower than set point (12V electric energy storage device < 12V or 24V electric energy storage device < 24V), charging device carried out quick charge with the constant electric current of maximum to electric energy storage device;

(2) current limliting

When (when 12V electric energy storage device >=12V or 24V electric energy storage device >=24V), charging stream limits automatically when being full of by the electric energy storage device that filled;

(3) trickle floating charge

When being reached the floating charge set point by the voltage of the electric energy storage device that filled, when (the 12V electric energy storage device is about 13.8V or the 24V electric energy storage device is about 27.6V), then transfer floating charge state automatically to, promptly the electric current with about 0.1-0.2A charges;

(4) stop filling

When the voltage of electric power storage electric energy storage device reached full set point (the 12V electric energy storage device is that 14V or 24V electric energy storage device are 28V), charging device then automatically shut down charging output.

The inner circuit board of charging device adopts the epoxy resin embedding.

The voltage detecting circuit inside of described charging device is provided with two voltage comparators, and charging voltage is carried out the dividing potential drop feedback through divider resistance.

Be connected to the alternating current input through D1-D4 bridge rectifier, C5 filter filtering like the inner circuit of the described charging device of Fig. 5, obtain+300V voltage, to the translation circuit power supply of V1 switching tube, V2 switching tube.

The external timer of IC1 Switching Power Supply integrated circuit, the concussion frequency of decision saw-toothed oscillator, when voltage during greater than sawtooth voltage, the output pulse width of IC1 Switching Power Supply integrated circuit will narrow down, thereby realize charging current control.Input signal changes, and after on-chip circuit is handled, exports a pair of equal and opposite in direction, phase place 180 degree, the square wave of pulse width variability, have transformer coupled to the power switch translation circuit to V1 switching tube, V2 switching tube.

The charged state indicating circuit is made up of IC2 double operational integrated circuit and light-emitting diode, and IC2 is connected into two voltage comparators, by charging current sampling voltage figure signal, shows the charging indicating status.

Supply voltage detects, and is to send into computing through the voltage that detects battery to amplify and judge 12V or 24V battery, and charger is with the constant voltage charge of 13.8V when realizing the 12V battery charge, and charger is with the constant voltage charge of 27.6V during to the 24V battery charge.

This charging device voltage sample is to send into computing through the voltage that detects battery to amplify and judge 12V or 24V battery, and charger is with the constant voltage charge of 13.8V when realizing the 12V battery charge, and charger is with the constant voltage charge of 27.6V during to the 24V battery charge.

The realization of overvoltage, short-circuit protection is that the inner IC1 of charger accomplishes, and there are two voltage comparators IC1 inside, is used separately as the sampling of charging voltage sample circuit charging current.Charging voltage is through divider resistance dividing potential drop feedback, and voltage is high more, and output pulse width is narrow more, and charging voltage is low more; Otherwise pulsewidth broadening, charging voltage raises.Thereby realize the purpose of constant voltage charge voltage.Current sampling signal is sent into IC1, and charging current is big more, and current potential is low more.When current potential is lower than the current potential of ground connection, the IC output will be closed, thereby realize the constant current trickle, be full of functions such as automatic stop, Short Circuit withstand.

Charging device designs for the 12V/24V charge in batteries specially; Have constant voltage, constant current, trickle floating charge, stop automatically after being full of, functional characteristic such as Short Circuit withstand, the DC 14V/28V automatic change type that charges, simple to operate, can effectively prevent operate miss and cause storage battery, charger to damage; Adopting soft switch designs, is at present domesticly uniquely can detect charging voltage, electric current automatically, and realizes the universal intelligent charger that automaticallyes switch.Its internal circuit chip adopts the army grade chip, and the integrated circuit plate is used the epoxy resin embedding, the protection against the tide that makes device have brilliance, anticorrosion, anti-vibration performance.

Inner overcurrent and short-circuit protection have perfect overcurrent and short-circuit protection; Because this device has constant-current characteristics; So when battery capacity very big (internal resistance is minimum), load short circuit occur or start other equipment (this moment, starting current was very big, was near short circuit) simultaneously during commercial power charged for charger can not damage yet.Simultaneously, because this characteristic of product, so charger need not to break off when storage battery uses as the startup power supply.

Claims (3)

1. charging device; The outside three-phase alternating current of this device input; Control is coupled in the electric energy storage device on the charging device; Comprise ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, UC voltage stabilizing circuit, voltage feedback circuit, secondary chopper circuit, second DC filtering circuit and the single chip machine controlling circuit; External power source is storage battery output charging through ac filter circuit, current rectifying and wave filtering circuit, DC/DC translation circuit, the first DC filtering circuit, secondary chopper circuit, the second DC filtering circuit successively, and the control of UC voltage stabilizing circuit exports the DC/DC translation circuit to, also is connected with voltage feedback circuit through the first DC filtering circuit; The UC voltage stabilizing circuit is connected to form closed loop with voltage feedback circuit again; The first DC filtering circuit is connected in single chip machine controlling circuit and for it working power is provided, and it is characterized in that: also have the voltage sampling circuit that is used to detect, judge electric energy storage device voltage, its input is connected in this charging device output; The voltage data of gathering is transferred to single chip machine controlling circuit carry out analyzing and processing, the data with analyzing and processing are sent to its output of secondary chopper circuit control again; Be connected with output sample rate current circuit at the second DC filtering circuit output end, again the output current data of gathering transferred to single chip machine controlling circuit and carry out analyzing and processing, the data with analyzing and processing are sent to its output of secondary chopper circuit control again; On single chip machine controlling circuit, be connected with overvoltage, short-circuit protection circuit.
2. charging device according to claim 1; It is characterized in that: charging device detects the voltage of gathering electric energy storage device through voltage sampling circuit and in sending into sheet machine control circuit, judges it is 12V or 24V through single chip machine controlling circuit; And the required voltage of control circuit output; When electric energy storage device was 12V voltage, this charging device was with the constant voltage output charging of 13.8V; When electric energy storage device was 24V voltage, this charging device was with the constant voltage output charging of 27.6V.
3. charging device according to claim 1 is characterized in that: the inner circuit board of charging device adopts the epoxy resin embedding.
CN2012200574430U 2012-03-23 2012-03-23 Charging device CN202513610U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200574430U CN202513610U (en) 2012-03-23 2012-03-23 Charging device

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Application Number Priority Date Filing Date Title
CN2012200574430U CN202513610U (en) 2012-03-23 2012-03-23 Charging device

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305849A (en) * 2015-11-13 2016-02-03 苏州扬佛自动化设备有限公司 Closed-loop control method of switching power supply
CN105305579A (en) * 2015-11-13 2016-02-03 苏州扬佛自动化设备有限公司 Closed-loop control circuit of power supply
CN107276194A (en) * 2017-08-14 2017-10-20 安徽华凯新能源科技有限公司 Anti-explosion electric forklift safety charger
CN107364361A (en) * 2017-08-14 2017-11-21 安徽华凯新能源科技有限公司 Electri forklift safety charger
CN107444164A (en) * 2017-08-14 2017-12-08 安徽华凯新能源科技有限公司 Electric fork charging machine for vehicle
CN107458254A (en) * 2017-08-15 2017-12-12 安徽华凯新能源科技有限公司 Safe vehicle-mounted charger
CN107591869A (en) * 2017-05-04 2018-01-16 合肥中耐电子设备有限公司 A kind of electri forklift intelligent high frequency charger charge control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305849A (en) * 2015-11-13 2016-02-03 苏州扬佛自动化设备有限公司 Closed-loop control method of switching power supply
CN105305579A (en) * 2015-11-13 2016-02-03 苏州扬佛自动化设备有限公司 Closed-loop control circuit of power supply
CN107591869A (en) * 2017-05-04 2018-01-16 合肥中耐电子设备有限公司 A kind of electri forklift intelligent high frequency charger charge control system
CN107276194A (en) * 2017-08-14 2017-10-20 安徽华凯新能源科技有限公司 Anti-explosion electric forklift safety charger
CN107364361A (en) * 2017-08-14 2017-11-21 安徽华凯新能源科技有限公司 Electri forklift safety charger
CN107444164A (en) * 2017-08-14 2017-12-08 安徽华凯新能源科技有限公司 Electric fork charging machine for vehicle
CN107458254A (en) * 2017-08-15 2017-12-12 安徽华凯新能源科技有限公司 Safe vehicle-mounted charger

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