CN103280869A - Mining explosive-proof and intrinsically safe battery charger - Google Patents
Mining explosive-proof and intrinsically safe battery charger Download PDFInfo
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- CN103280869A CN103280869A CN2013102353215A CN201310235321A CN103280869A CN 103280869 A CN103280869 A CN 103280869A CN 2013102353215 A CN2013102353215 A CN 2013102353215A CN 201310235321 A CN201310235321 A CN 201310235321A CN 103280869 A CN103280869 A CN 103280869A
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Abstract
The invention belongs to the power electronics and control technical field, and particularly relates to a mining explosive-proof and intrinsically safe battery charger which is suitable for a mining lithium ion storage battery power supply device in the coal mining field. The battery charger is supplied with power directly by a 660 V AC power supply, the current and the voltage used for charging of a lithium ion storage battery are generated through a rectified three-phase circuit, a BUCK converter circuit, an H-bridge converter circuit and a high-frequency rectified circuit, intelligent control and monitoring of the charging process of the lithium ion storage battery are achieved by an intelligent charging process control unit which is in communication with the outside through a CAN repeater, and therefore networked and remote charging is achieved.
Description
Technical field
The invention belongs to power electronics and control technology field, be specifically related to a kind of mine flameproof and intrinsic safety type charger, be applicable to the mining lithium-ions battery supply unit in field, colliery.
Background technology
Employed mining charger in the China's coal-mine all is that industrial frequency rectifying technology, single work do not have networking mostly at present.There are a lot of drawbacks in this charge technology, as:
(1) power consumption is big, and traditional charger adopts the industrial frequency rectifying technology, and power factor is low;
(2) pollution that environment and resource are caused, original charger adopts a large amount of ferrous materials and rare metal, and because the infringement that the charge technology backwardness causes battery, and storage battery will produce huge pollution to environment;
(3) charging needs artificial guard, the no communication technology of tradition charging, and charge technology falls behind, and needs artificial guard in the charging process, carries out the charge technology operation;
(4) lack to brand-new material charging power supply technologies such as lithium batteries; The lithium battery source apparatus is had relatively high expectations to charge technology, and traditional charger can't satisfy the charge technology of lithium battery storage battery.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of mining intrinsic safety type charger is provided, this charger is directly powered by the 660VAC AC power, change circuit and high-frequency rectification circuit through rectified three-phase circuit, BUCK translation circuit, H bridging, produce the electric current and the voltage that are used for the lithium-ions battery charging, adopt intelligent charge technology controlling and process unit to be used for realizing intellectuality control and the monitoring of lithium-ions battery charging process simultaneously, and is connected the networking, the long-range that charge with realization by the CAN repeater with PERCOM peripheral communication.
The object of the invention realizes being finished by following technical scheme:
A kind of mine flameproof and intrinsic safety type charger, comprise power conversion circuit and charging control circuit, it is characterized in that described power conversion circuit is by the rectified three-phase circuit that connects in turn, the BUCK translation circuit, the H bridging changes circuit and high-frequency rectification circuit is formed, wherein three-phase 660VAC alternating voltage obtains the direct voltage of 891VDC ~ 933VDC through rectified three-phase circuit, through the BUCK translation circuit this dc voltage conversion is pressed for the 600VDC galvanic current again, it is the controlled direct voltage of 0-400VDC again with the 600VDC voltage transitions that the H bridging changes circuit, high-frequency rectification circuit is the continuously adjustable direct current of 0-100A with current transformation, output to the outside again, finish charge in batteries.
Described BUCK translation circuit is made of IGBT module (VT1), diode (VD6), filter inductance (L1), filter capacitor (C4, C5) and grading resistor (R5, R6), the emitter of described IGBT module (VT1) links to each other with described filter inductance (L1), and the collector electrode of described IGBT module (VT1) connects described rectified three-phase circuit, described filter inductance (L1) connects described H bridging and changes circuit.
Described high-frequency rectification circuit is made of high-frequency rectification pipe (VD8, VD9, VD10, VD11, VD12, VD13, VD14, VD15), filter inductance (L2) and filter capacitor (C6).
Described rectified three-phase circuit is made of input switch (Q1), power rectification module (VD1, VD2, VD3, VD4, VD5, VD6), last electric contactor (Q2), pre-charge resistance (R1), filter capacitor (C1, C2, C3) and grading resistor (R2, R3, R4); Described H bridging changes circuit and is made of IGBT module (QT1, QT2, QT3, QT4), high frequency transformer (TR1); The collector electrode of the IGBT module (VT1) in the positive pole after the described rectified three-phase circuit rectification and the described BUCK translation circuit is connected, the output of filter inductance (L1) links to each other with IGBT module (QT1, the QT2) collector electrode that described H bridging changes in the circuit, the emitter of IGBT module (QT1) links to each other with the A point of high frequency transformer (TR1) with the tie point of the collector electrode of IGBT module (QT3), and the emitter of IGBT module (QT2) links to each other with the B point of high frequency transformer (TR1) with the tie point of the collector electrode of IGBT module (QT4).
Described charging control circuit comprises that intelligent charge technology controlling and process unit, the BUCK conversion control unit that links to each other with described intelligent charge technology controlling and process unit and the H bridging that links to each other with described intelligent charge technology controlling and process unit change control unit, wherein said intelligent charge technology controlling and process unit is connected with described CAN repeater, and described CAN repeater is powered by intrinsic safety electric source.
Advantage of the present invention is, (1) power output is big, and mine flameproof and intrinsic safety type charger rated output power reaches 40KW, can satisfy the charging requirement capacity of mining lithium-ions battery supply unit; (2) have essential safe type CAN communication mode, according to power-supply management system the requirement of charge technology is charged, guarantee fail safe, the science of lithium cell charging; (3) energy-conservation, the present invention adopts high frequency, soft switch technique, can significantly lower the energy consumption of charger itself, compares the traditional power consumption of charging function attenuating more than 20%; (4) long service life, new technology can make the weight of charging device reduce 10-20 doubly, meanwhile will prolong the useful life of storage battery, will directly reduce the huge pollution of battery material to environment; (5) reduce human cost, new charge technology technology does not need operating personnel to guard by modernized detection means and intelligent control technology substantially, plays the effect of personnel reduction and enlargement.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
Embodiment: present embodiment is specifically related to a kind of Flameproof intrinsically safe charger of mining lithium-ions battery charging power supply, adopt high frequency technique, soft switch technique and digital control technology, replaced the Industrial Frequency Transformer of traditional heaviness that adopts and the power frequency transformation type charger that maintenance capacity is big, power consumption is big.
This charger mainly is made of power conversion circuit and these two parts of charging control circuit.
As shown in Figure 1, power conversion circuit is directly powered by the 660VAC AC power, and this power conversion circuit comprises that specifically the rectified three-phase circuit, BUCK translation circuit, the H bridging that connect in turn change circuit and high-frequency rectification circuit, and is specific as follows:
1. rectified three-phase circuit is made of input switch (Q1), power rectification module (VD1, VD2, VD3, VD4, VD5, VD6), last electric contactor (Q2), pre-charge resistance (R1), filter capacitor (C1, C2, C3) and grading resistor (R2, R3, R4); The positive pole last electric contactor of process (Q2) of power rectification module (VD1, VD2, VD3) and pre-charge resistance (R1) back are connected the positive pole of filter capacitor (C1, C2, C3), and the positive pole of filter capacitor (C1, C2, C3) connects the collector electrode of IGBT module (VT1); The negative pole of power rectification module (VD1, VD2, VD3) connects the negative pole of filter capacitor (C1, C2, C3);
2. the BUCK translation circuit is made of IGBT module (VT1), power diode (VD6), filter inductance (L1), filter capacitor (C4, C5) and grading resistor (R5, R6); The emitter of IGBT module (VT1) connects the negative pole of power diode (VD6), passes through the positive pole that filter inductance (L1) connects filter capacitor (C4, C5) again; The positive pole of power diode (VD6) connects the negative pole of filter capacitor (C4, C5);
3. the H bridging changes circuit by IGBT module (QT1, QT2, QT3, QT4), electric capacity (Cp1, Cp2, Cp3, Cp4) and high frequency transformer (TR1) formation; The emitter of QT1 is connected the A utmost point of high frequency transformer (TR1) with the collector electrode of QT3, the emitter of QT2 is connected the B utmost point of high frequency transformer (TR1) with the collector electrode of QT4, electric capacity (Cp1, Cp2, Cp3, Cp4) connects collector electrode and the emitter of IGBT module (QT1, QT2, QT3, QT4) respectively;
4. high-frequency rectification circuit is made of high-frequency rectification pipe (VD8, VD9, VD10, VD11, VD12, VD13, VD14, VD15), filter inductance (L2) and filter capacitor (C6); High-frequency rectification pipe (VD8, VD9) is anodal, (VD10, VD11) is anodal, (VD12, VD13) is anodal, (VD14, VD15) anodal P1, P2, P3, P4 that connects high frequency transformer respectively; High-frequency rectification pipe (VD8, VD9) negative pole, (VD10, VD11) negative pole, (VD12, VD13) negative pole, (VD14, VD15) negative pole connect the input side of filter inductance (L2), and the outlet side of filter inductance (L2) connects the positive pole of ripple electric capacity (C6); The negative pole that connects filter capacitor (C6) connects N1, the N2 of high frequency transformer (TR1).
The collector electrode of IGBT module VT1 in the positive pole of rectified three-phase circuit behind three phase rectifier and the BUCK translation circuit is connected, the emitter of IGBT module VT1 links to each other with filter inductance L1, the output of filter inductance L1 links to each other with the collector electrode that the H bridging changes IGBT module (being power switch pipe) QT1, QT2 in the circuit, the emitter of IGBT module QT1 links to each other with the A point of high frequency transformer TR1 with the tie point of the collector electrode of IGBT module QT3, and the emitter of IGBT module QT2 links to each other with the B point of high frequency transformer TR1 with the tie point of the collector electrode of IGBT module QT4.Wherein power switch pipe adopts the PWM control technology.
The concrete job step of above-mentioned power conversion circuit is: three-phase alternating current 660VAC voltage is through input switch Q1, pass through again by power rectification module VD1-VD6, last electric contactor Q2, pre-charge resistance R1, the rectified three-phase circuit that filter capacitor C1-C3 and grading resistor R2-R4 constitute obtains the direct voltage of 891VDC ~ 933VDC, pass through again by IGBT module VT1, diode VD6, filter inductance L1, filter capacitor C4, C5 and grading resistor R5, the BUCK translation circuit that R6 constitutes is the stable direct voltage of 600VDC with this dc voltage conversion, pass through again afterwards by IGBT module QT1-QT4, it is the controlled direct voltage of 0-400VDC with the 600VDC voltage transitions that the H bridging that capacitor C p1-Cp4 and high frequency transformer TR1 constitute changes circuit, finally by crossing by high-frequency rectification pipe VD8-VD15, the high-frequency rectification circuit that filter inductance L2 and filter capacitor C6 constitute is the continuously adjustable direct current of 0-100A with current transformation, output to the outside, give the lithium-ions battery charging power supply, the power output adjustable size reaches as high as 40Kw.
As shown in Figure 1, charging control circuit mainly comprises intelligent charge technology controlling and process unit and intrinsic safety part, intelligent charge technology controlling and process unit changes control unit implementation centralized control to its BUCK conversion control unit of dividing into and H bridging, the intrinsic safety part then comprises CAN repeater and output intrinsically safe power supply, the output intrinsically safe power supply is converted to 12VDC to power to the CAN repeater with 220VAC, PERCOM peripheral communication is connected with intelligent charge technology controlling and process unit through the CAN repeater, feature according to the lithium-ions battery supply unit, by the charge technology intelligent control unit storage battery is carried out intelligent charge, receive the control command of PERCOM peripheral communication and under the software program of working out, realize by the digital signal processor in the charge technology intelligent control unit, can finish the storage battery initial charge, control modes such as multistage charging and multiple quick charge, it is big to make charger have a charge power, energy-conservation, charging networkization, long-range, characteristics such as intellectuality; Wherein BUCK conversion control unit is connected with the BUCK translation circuit, and it has the function of driving and voltage detecting to the BUCK translation circuit; Wherein the H bridging changes control unit and changes circuit with the H bridging and be connected, and it changes the function that circuit has module drive, temperature detection, current detecting and voltage detecting to the H bridging.
Present embodiment adopts high frequency technique, soft switch technique and digital control technology, realizes the high-quality charging of intellectuality, networking and the safe of charger, and its rated output power can reach 40Kw simultaneously.
Present embodiment has carried out significantly improving and optimizing on the basis of the switching regulator charge in batteries machine ZL 20061002378.7 that my company applies for:
Increase the intrinsic safety type communication function, possessed to the charging ability of lithium-ions battery supply unit, can realize networking and the long-range of many charging devices;
Power output has been brought up to 40KW, has possessed the ability of quick charge, has shortened the charging interval, improves the efficient of equipment;
Optimize quick charge technology, satisfied the charge characteristic requirement of lithium-ions battery fully, in the useful life of having improved lithium ion, increased user's economic benefit.
Claims (5)
1. mine flameproof and intrinsic safety type charger, comprise power conversion circuit and charging control circuit, it is characterized in that described power conversion circuit is by the rectified three-phase circuit that connects in turn, the BUCK translation circuit, the H bridging changes circuit and high-frequency rectification circuit is formed, wherein three-phase 660VAC alternating voltage obtains the direct voltage of 891VDC ~ 933VDC through rectified three-phase circuit, through the BUCK translation circuit this dc voltage conversion is pressed for the 600VDC galvanic current again, it is the controlled direct voltage of 0-400VDC again with the 600VDC voltage transitions that the H bridging changes circuit, high-frequency rectification circuit is the continuously adjustable direct current of 0-100A with current transformation, output to the outside again, finish charge in batteries.
2. a kind of mine flameproof and intrinsic safety type charger according to claim 1, it is characterized in that described BUCK translation circuit is made of IGBT module (VT1), diode (VD6), filter inductance (L1), filter capacitor (C4, C5) and grading resistor (R5, R6), the emitter of described IGBT module (VT1) links to each other with described filter inductance (L1), and the collector electrode of described IGBT module (VT1) connects described rectified three-phase circuit, described filter inductance (L1) connects described H bridging and changes circuit.
3. a kind of mine flameproof and intrinsic safety type charger according to claim 1 is characterized in that described high-frequency rectification circuit is made of high-frequency rectification pipe (VD8, VD9, VD10, VD11, VD12, VD13, VD14, VD15), filter inductance (L2) and filter capacitor (C6).
4. a kind of mine flameproof and intrinsic safety type charger according to claim 2 is characterized in that described rectified three-phase circuit is made of input switch (Q1), power rectification module (VD1, VD2, VD3, VD4, VD5, VD6), last electric contactor (Q2), pre-charge resistance (R1), filter capacitor (C1, C2, C3) and grading resistor (R2, R3, R4); Described H bridging changes circuit and is made of IGBT module (QT1, QT2, QT3, QT4), high frequency transformer (TR1); The collector electrode of the IGBT module (VT1) in the positive pole after the described rectified three-phase circuit rectification and the described BUCK translation circuit is connected, the output of filter inductance (L1) links to each other with IGBT module (QT1, the QT2) collector electrode that described H bridging changes in the circuit, the emitter of IGBT module (QT1) links to each other with the A point of high frequency transformer (TR1) with the tie point of the collector electrode of IGBT module (QT3), and the emitter of IGBT module (QT2) links to each other with the B point of high frequency transformer (TR1) with the tie point of the collector electrode of IGBT module (QT4).
5. a kind of mine flameproof and intrinsic safety type charger according to claim 1, it is characterized in that described charging control circuit comprises that intelligent charge technology controlling and process unit, the BUCK conversion control unit that links to each other with described intelligent charge technology controlling and process unit and the H bridging that links to each other with described intelligent charge technology controlling and process unit change control unit, wherein said intelligent charge technology controlling and process unit is connected with described CAN repeater, and described CAN repeater is powered by intrinsic safety electric source.
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| CN2013102353215A CN103280869A (en) | 2013-06-14 | 2013-06-14 | Mining explosive-proof and intrinsically safe battery charger |
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| CN2013102353215A CN103280869A (en) | 2013-06-14 | 2013-06-14 | Mining explosive-proof and intrinsically safe battery charger |
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Cited By (5)
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| CN108039743A (en) * | 2017-11-17 | 2018-05-15 | 蔚来汽车有限公司 | Charging station and charging system, method, apparatus |
| CN109687543A (en) * | 2018-09-10 | 2019-04-26 | 中车青岛四方车辆研究所有限公司 | Circuit for charging machine based on LLC resonant tank |
| CN110445220A (en) * | 2019-08-22 | 2019-11-12 | 中车青岛四方车辆研究所有限公司 | Charger module and circuit |
| CN110829531A (en) * | 2019-11-14 | 2020-02-21 | 兖州煤业股份有限公司 | Intelligent control device and method for automatic charging of charger |
| US10879519B2 (en) | 2018-12-17 | 2020-12-29 | Bayco Products, Inc. | Spark protection apparatus for intrinsically safe, battery-operated devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110829531A (en) * | 2019-11-14 | 2020-02-21 | 兖州煤业股份有限公司 | Intelligent control device and method for automatic charging of charger |
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