CN104333061A - Flameproof lithium battery starting power source for coal mine - Google Patents

Flameproof lithium battery starting power source for coal mine Download PDF

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Publication number
CN104333061A
CN104333061A CN201410588248.4A CN201410588248A CN104333061A CN 104333061 A CN104333061 A CN 104333061A CN 201410588248 A CN201410588248 A CN 201410588248A CN 104333061 A CN104333061 A CN 104333061A
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CN
China
Prior art keywords
lithium battery
circuit
interface
administrative unit
switch
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Granted
Application number
CN201410588248.4A
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Chinese (zh)
Other versions
CN104333061B (en
Inventor
肖林京
常龙
于鹏杰
于志豪
张玉龙
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Priority to CN201410588248.4A priority Critical patent/CN104333061B/en
Publication of CN104333061A publication Critical patent/CN104333061A/en
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Publication of CN104333061B publication Critical patent/CN104333061B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302Overcharge protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306Overdischarge protection

Abstract

The invention discloses a flameproof lithium battery starting power source for coal mine. The flameproof lithium battery starting power source comprises a power supply circuit, a power management circuit, a control room circuit, a charge-discharge protection circuit, a charging circuit and a starting circuit. A lithium battery management unit is arranged in the power management circuit; an intermediate relay and a direct-current contactor are arranged in the charge-discharge protection circuit; the lithium battery management unit is capable of realizing detection and warning on the voltage, the temperature and the current of an individual battery; when the charging of a lithium battery pack is finished, the lithium battery management unit automatically controls the intermediate relay to switch off, and consequently, direct-current contact is stopped and the charging of the lithium battery pack is ended; in case of abnormal use of the lithium battery pack, the lithium battery management unit controls the intermediate relay to switch off, and consequently, the direct-current contact is stopped and the charging and discharging of the lithium battery pack are ended, and therefore, the lithium battery pack can be protected. In addition, the lithium battery management unit can be powered by a charger by use of a first diode and a second diode when the lithium battery pack is completely drained.

Description

A kind of coal mine flame-proof type lithium battery starts power supply
Technical field
The present invention relates to a kind of coal mine flame-proof type lithium battery and start power supply.
Background technology
At present, the startup power supply of colliery diesel locomotive mostly is flame proof actuated type lead acid accumulator, and this lead acid accumulator has that capacity is little, self discharge amount is large, the life-span is short and the shortcoming such as environmental pollution is serious.The distinguishing features such as lithium-ions battery has specific power and specific energy is high, green non-pollution and long service life are the optimum substitute products of lead acid accumulator, are the directions of novel secondary storage battery development.Peace mark national center issues 5 files such as " mining lithium-ions battery safety specifications (trying) " and " mine explosion-suppression (intrinsic safety of holding concurrently) type lithium-ions battery power safety technology requires (trying) ", and this indicates that lithium-ions battery enters substantial period in the application of down-hole.Therefore, lithium battery is applied to colliery and start on power supply, colliery is significant.
Summary of the invention
The object of the invention is to propose a kind of coal mine flame-proof type lithium battery and start power supply, start power supply as colliery diesel locomotive, replace existing lead acid accumulator to start power supply.
To achieve these goals, the present invention adopts following technical scheme:
A kind of coal mine flame-proof type lithium battery starts power supply, comprises power circuit, electric power management circuit, department's control room circuit, charge-discharge protection circuit, charging circuit and start-up circuit; Wherein,
Power circuit, comprises a lithium battery group and a total mechanical switch;
Electric power management circuit, is connected in parallel on power circuit, comprises a lithium battery administrative unit and first diode;
Department's control room circuit, is connected in parallel on power circuit, comprises first switch and department's control room interface;
Charging circuit, comprises a second switch and a charger interface;
Start-up circuit, comprises the 3rd switch and a starter motor interface;
Charge-discharge protection circuit, comprises an auxiliary relay and a D.C. contactor;
Auxiliary relay is connected in parallel in lithium battery administrative unit;
After the parallel circuits that D.C. contactor and charging circuit and start-up circuit are formed is connected in series, be jointly parallel-connected on power circuit;
After charger interface is connected in series with second diode, be jointly parallel-connected in lithium battery administrative unit;
Lithium battery administrative unit, for completing voltage to lithium battery group cell, temperature, current detecting and warning, and controls the charge/discharge protection that charge-discharge protection circuit realizes lithium battery group.
Further, when lithium battery group there is not electricity completely, be that lithium battery administrative unit is powered by charger interface, the first diode and the second diode.
Further, when non-normal use appears in lithium battery group, lithium battery administrative unit makes D.C. contactor disconnect by controlling auxiliary relay disconnection, and the discharge and recharge realizing lithium battery group stops;
Wherein, the situation of non-normal use, comprises lithium battery group and occurs excess temperature, overvoltage or under-voltage.
Further, when after the charging complete of lithium battery group, lithium battery administrative unit controls auxiliary relay disconnection automatically makes D.C. contactor disconnect, lithium battery group charging termination.
Further, above-mentioned lithium battery administrative unit, comprises a MCU, and MCU is provided with a SPI interface, at least one CAN interface, two GPIO interfaces, two AD interfaces and DC/DC interfaces; Wherein,
SPI interface is connected with a series battery voltage and detects special chip;
CAN interface is connected with TFT liquid crystal display by a CAN;
A GPIO interface is connected with a temperature sensor;
Another GPIO interface connects described auxiliary relay;
An AD interface is connected with a first single supply current Hall transducer;
Another AD interface is connected with a second single supply current Hall transducer;
DC/DC interface is connected with DC/DC power supply;
Wherein, the first single supply current Hall transducer has different ranges from the second single supply Hall element.
Further, a kind of coal mine flame-proof type lithium battery starts power supply, also comprises a Flameproof box, comprises battery cavities, control chamber and wire connection cavity; Wherein,
Lithium battery group is positioned at the inside of battery cavities;
Lithium battery administrative unit, total mechanical switch, the first switch, second switch and the 3rd switch are positioned at the inside of control chamber;
Department's control room interface, charger interface and starter motor interface are positioned at the inside of wire connection cavity.
Tool of the present invention has the following advantages:
The startup power supply that the present invention addresses, comprises power circuit, electric power management circuit, department's control room circuit, charge-discharge protection circuit, charging circuit and start-up circuit.Electric power management circuit is provided with lithium battery administrative unit, charge-discharge protection circuit is provided with auxiliary relay and D.C. contactor, the voltage of cell, temperature, current detecting and warning can be realized by lithium battery administrative unit; And when after the charging complete of lithium battery group, lithium battery administrative unit can automatically control auxiliary relay and disconnect, and makes direct current contact and disconnects, lithium battery group charging termination; When non-normal use appears in lithium battery group, lithium battery administrative unit disconnects by controlling auxiliary relay, direct current is contacted and disconnects, and the discharge and recharge realizing lithium battery group stops, and lithium battery group is protected.In addition, can when lithium battery group there be electricity completely by the first diode and the second diode, utilize charger to power for lithium battery administrative unit, ensure that under any circumstance lithium battery administrative unit can normally work.The present invention meets colliery particular/special requirement, multiple functional, has that volume is little, discharging current is large, capacity is large, volume is little, the life-span is long and pollute little advantage.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram that in the present invention, coal mine flame-proof type lithium battery starts power supply;
Fig. 2 is the structured flowchart of lithium battery administrative unit in Fig. 1;
Fig. 3 is the connection layout in kind that in the present invention, coal mine flame-proof type lithium battery starts power supply;
Wherein, 1-lithium battery group, the total mechanical switch of 2-, 3-lithium battery administrative unit, 4-first diode, 5-first switch, 6-department control room interface, 7-auxiliary relay, 8-D.C. contactor, 9-second switch;
10-charger interface, 11-the 3rd switch, 12-starter motor interface, 13-second diode, 14-series battery voltage detects special chip, 15-TFT liquid crystal display, 16-temperature sensor, 17-first single supply current Hall transducer, 18-second single supply current Hall transducer, 19-DC/DC power supply;
20-battery cavities, 21-control chamber, 22-wire connection cavity.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Shown in composition graphs 1, a kind of coal mine flame-proof type lithium battery starts power supply, comprises power circuit, electric power management circuit, department's control room circuit, charge-discharge protection circuit, charging circuit and start-up circuit.Wherein,
Power circuit, comprises a lithium battery group 1 and a total mechanical switch 2.
Electric power management circuit, is connected in parallel on power circuit, comprises a lithium battery administrative unit 3 and first diode 4.
Department's control room circuit, is connected in parallel on power circuit, and comprise first switch 5 and department's control room interface 6, department's control room interface 6 can connect the equipment such as illuminating lamp.
Charging circuit, comprise a second switch 9 and a charger interface 10, charger interface 10 connects charger, for charging to lithium battery group.
Start-up circuit, comprise the 3rd switch 11 and a starter motor interface 12, starter motor interface 12 connects starter motor, for realizing start-up performance.Charging circuit and start-up circuit are connected in parallel.
Charge-discharge protection circuit, comprises an auxiliary relay 7 and a D.C. contactor 8, wherein,
Auxiliary relay 7 is connected in parallel in lithium battery administrative unit 3;
The parallel circuits formed by charging circuit and start-up circuit, after being connected in series, is parallel-connected on power circuit jointly with D.C. contactor 8.
Charger interface 12 is parallel-connected in lithium battery administrative unit 3 after being connected in series with second diode 13 jointly.
Lithium battery administrative unit 3, for completing voltage to lithium battery group cell, temperature, current detecting and warning, and controls the charge/discharge protection that charge-discharge protection circuit realizes lithium battery group.
Roughly the course of work is as follows for it:
User in use, first closed total mechanical switch 2, now, start working by lithium battery administrative unit 3.Then closed first switch 5, lithium battery group 1 is powered for taking charge of control room.
When lithium battery group 1 is working properly, lithium battery administrative unit 3 controls auxiliary relay 7 adhesive, makes direct current contact 8 conductings, now, as long as user's manual closing the 3rd switch 11 just can complete start-up performance.
After startup completes, the power-equipment be activated drives charger to start working, and user can realize the charging of charger to lithium battery group 1 by manual closing second switch 9.
When after lithium battery group 1 charging complete, lithium battery administrative unit 3 can automatically control auxiliary relay 7 and disconnect, and makes direct current contact 8 and disconnects, lithium battery group 1 charging termination.
When non-normal use appears in lithium battery group, lithium battery administrative unit 3 disconnects by controlling auxiliary relay 7, and make direct current contact 8 and disconnect, the discharge and recharge realizing lithium battery group 1 stops, and lithium battery group 1 is protected;
Wherein, the situation of non-normal use, comprises excess temperature, overvoltage or under-voltage etc.
Wherein, diode D1 and D2 achieves when lithium battery group 1 there is not electricity completely, utilizes the function that the external power supplys such as charger are powered for lithium battery administrative unit 3, ensure that under any circumstance lithium battery administrative unit 3 can normally work.
As shown in Figure 2, lithium battery administrative unit 3, comprises a MCU, and MCU is provided with a SPI interface, at least one CAN interface, two GPIO interfaces, two AD interfaces and DC/DC interfaces.Wherein,
SPI interface is connected with a series battery voltage and detects special chip 14, detect special chip 14 by series battery voltage and carry out voltage detecting;
CAN interface is connected with TFT liquid crystal display 15 by a CAN;
A GPIO interface is connected with a temperature sensor 16, carries out temperature detection by the temperature sensor 16 of monobus communication;
Another GPIO interface connects auxiliary relay 7;
An AD interface is connected with a first single supply current Hall transducer 17;
Another AD interface is connected with a second single supply current Hall transducer 18;
DC/DC interface is connected with DC/DC power supply 19;
Wherein, the first single supply current Hall transducer 17 has different ranges from the second single supply Hall element 18, and single supply current Hall transducer HALL1 and HALL2 different by two ranges carries out current detecting.
TFT liquid crystal display 15 is connected with lithium battery administrative unit 3 by CAN, and TFT liquid crystal display 15 equally also has the MCU of oneself to control TFT screen, and the CAN carried by MCU receives the data that lithium battery administrative unit 3 is sent.
By the control of MCU to TFT screen, the main displaying monomer cell voltage in first interface of design, cell temperature, charging and discharging currents, second alert interface, mainly shows the warnings such as overvoltage, excess temperature, detection line broken string.
In addition, coal mine flame-proof type lithium battery starts power supply, also comprises a Flameproof box.
Flameproof box, comprises a battery cavities 20, control chamber 21 and a wire connection cavity 22.Wherein,
Lithium battery group 1 and temperature sensor 16 are positioned at the inside of battery cavities 20;
Lithium battery administrative unit 3, total mechanical switch 2, first switch 5, second switch 9 and the 3rd switch 11 are positioned at the inside of control chamber 21;
Department's control room interface 6, charger interface 10 and starter motor interface 12 are positioned at the inside of wire connection cavity 22.
Certainly; more than illustrate and be only preferred embodiment of the present invention; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification; made all equivalently to substitute, obvious variant, within the essential scope all dropping on this specification, protection of the present invention ought to be subject to.

Claims (6)

1. coal mine flame-proof type lithium battery starts a power supply, it is characterized in that, comprises power circuit, electric power management circuit, department's control room circuit, charge-discharge protection circuit, charging circuit and start-up circuit; Wherein,
Power circuit, comprises a lithium battery group and a total mechanical switch;
Electric power management circuit, is connected in parallel on power circuit, comprises a lithium battery administrative unit and first diode;
Department's control room circuit, is connected in parallel on power circuit, comprises first switch and department's control room interface;
Charging circuit, comprises a second switch and a charger interface;
Start-up circuit, comprises the 3rd switch and a starter motor interface;
Charge-discharge protection circuit, comprises an auxiliary relay and a D.C. contactor;
Auxiliary relay is connected in parallel in lithium battery administrative unit;
After the parallel circuits that D.C. contactor and charging circuit and start-up circuit are formed is connected in series, be jointly parallel-connected on power circuit;
After charger interface is connected in series with second diode, be jointly parallel-connected in lithium battery administrative unit;
Lithium battery administrative unit, for completing voltage to lithium battery group cell, temperature, current detecting and warning, and controls the charge/discharge protection that charge-discharge protection circuit realizes lithium battery group.
2. a kind of coal mine flame-proof type lithium battery according to claim 1 starts power supply, and it is characterized in that, when lithium battery group there is not electricity completely, be that lithium battery administrative unit is powered by charger interface, the first diode and the second diode.
3. a kind of coal mine flame-proof type lithium battery according to claim 1 starts power supply, it is characterized in that, when non-normal use appears in lithium battery group, lithium battery administrative unit makes D.C. contactor disconnect by controlling auxiliary relay disconnection, and the discharge and recharge realizing lithium battery group stops;
Wherein, the situation of non-normal use, comprises lithium battery group and occurs excess temperature, overvoltage or under-voltage.
4. a kind of coal mine flame-proof type lithium battery according to claim 1 starts power supply, it is characterized in that, when after the charging complete of lithium battery group, lithium battery administrative unit controls auxiliary relay disconnection automatically makes D.C. contactor disconnect, lithium battery group charging termination.
5. a kind of coal mine flame-proof type lithium battery according to claim 1 starts power supply, it is characterized in that, described lithium battery administrative unit, comprises a MCU, and MCU is provided with a SPI interface, at least one CAN interface, two GPIO interfaces, two AD interfaces and DC/DC interfaces; Wherein,
SPI interface is connected with a series battery voltage and detects special chip;
CAN interface is connected with TFT liquid crystal display by a CAN;
A GPIO interface is connected with a temperature sensor;
Another GPIO interface connects described auxiliary relay;
An AD interface is connected with a first single supply current Hall transducer;
Another AD interface is connected with a second single supply current Hall transducer;
DC/DC interface is connected with DC/DC power supply;
Wherein, the first single supply current Hall transducer has different ranges from the second single supply Hall element.
6. a kind of coal mine flame-proof type lithium battery according to any one of claim 1 to 5 starts power supply, it is characterized in that, also comprises a Flameproof box, comprise battery cavities, control chamber and wire connection cavity; Wherein,
Lithium battery group is positioned at the inside of battery cavities;
Lithium battery administrative unit, total mechanical switch, the first switch, second switch and the 3rd switch are positioned at the inside of control chamber;
Department's control room interface, charger interface and starter motor interface are positioned at the inside of wire connection cavity.
CN201410588248.4A 2014-10-28 2014-10-28 A kind of coal mine flame-proof type lithium battery starts power supply Expired - Fee Related CN104333061B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958629A (en) * 2016-05-25 2016-09-21 惠州市蓝微新源技术有限公司 BMS power supply device and power supply method for electric automobile
CN108462220A (en) * 2018-02-01 2018-08-28 深圳市艾丽声电子有限公司 Multiple protective diesel engine starting power supply and guard method
CN109586368A (en) * 2018-12-07 2019-04-05 珠海格力电器股份有限公司 Energy-storage system starter, starting method and energy-storage system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6879132B2 (en) * 2002-04-15 2005-04-12 Fuji Electric Co., Ltd. Switching power supply unit
CN201854067U (en) * 2010-11-22 2011-06-01 张进滨 On-line charging-discharging device of storage battery
CN203590047U (en) * 2013-12-16 2014-05-07 哈尔滨华富科技有限公司 660V output stabilized power supply for mining
CN204205645U (en) * 2014-10-28 2015-03-11 山东科技大学 A kind of coal mine flame-proof type lithium battery starts power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6879132B2 (en) * 2002-04-15 2005-04-12 Fuji Electric Co., Ltd. Switching power supply unit
CN201854067U (en) * 2010-11-22 2011-06-01 张进滨 On-line charging-discharging device of storage battery
CN203590047U (en) * 2013-12-16 2014-05-07 哈尔滨华富科技有限公司 660V output stabilized power supply for mining
CN204205645U (en) * 2014-10-28 2015-03-11 山东科技大学 A kind of coal mine flame-proof type lithium battery starts power supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958629A (en) * 2016-05-25 2016-09-21 惠州市蓝微新源技术有限公司 BMS power supply device and power supply method for electric automobile
CN108462220A (en) * 2018-02-01 2018-08-28 深圳市艾丽声电子有限公司 Multiple protective diesel engine starting power supply and guard method
CN109586368A (en) * 2018-12-07 2019-04-05 珠海格力电器股份有限公司 Energy-storage system starter, starting method and energy-storage system
CN109586368B (en) * 2018-12-07 2020-09-15 珠海格力电器股份有限公司 Energy storage system starting device, starting method and energy storage system

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