CN111591164A - Reconfigurable mining storage battery power supply charging system - Google Patents

Reconfigurable mining storage battery power supply charging system Download PDF

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Publication number
CN111591164A
CN111591164A CN202010459618.XA CN202010459618A CN111591164A CN 111591164 A CN111591164 A CN 111591164A CN 202010459618 A CN202010459618 A CN 202010459618A CN 111591164 A CN111591164 A CN 111591164A
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China
Prior art keywords
switch
branch
output end
current conversion
sub
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CN202010459618.XA
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Chinese (zh)
Inventor
郑昌陆
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Shanghai Sh Driver Electric Co ltd
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Shanghai Sh Driver Electric Co ltd
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Priority to CN202010459618.XA priority Critical patent/CN111591164A/en
Publication of CN111591164A publication Critical patent/CN111591164A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

Abstract

The invention provides a reconfigurable mining storage battery power supply charging system which comprises a rectifying unit, a main direct-current conversion unit and N sub-direct-current conversion units, wherein the rectifying unit comprises a rectifying circuit, the main direct-current conversion unit comprises a main direct-current conversion circuit, and each sub-direct-current conversion unit comprises a sub-direct-current conversion circuit. According to the reconfigurable mining storage battery power supply charging system provided by the embodiment of the invention, the main direct current conversion unit and the plurality of sub direct current conversion units are controlled to work cooperatively, so that the system can work in various input and output modes to adapt to power supply systems of different voltage grades of a mine, the charging requirements of various storage batteries are met, the use flexibility of the mining charging system is greatly improved, and the space utilization rate of an underground charging chamber is improved.

Description

Reconfigurable mining storage battery power supply charging system
Technical Field
The invention relates to the technical field of mining power supplies, in particular to a reconfigurable mining storage battery power supply charging system.
Background
The pure electric auxiliary transport vehicle powered by the storage battery power supply under the coal mine has different functions and different industrial and mining properties, and has different rated load capacity and driving power, so that the required storage battery power supply specifications have larger difference, and the voltage grades of the coal mine underground power supply system have 380V, 660V and 1140V, which have huge difference. In addition, the power level and the intelligent degree of the existing charging system are generally low, and the volume is large due to explosion-proof requirements, so that the charging efficiency and the service life of a storage battery power supply are also seriously influenced while the space utilization rate of a charging chamber is low and the operation and maintenance cost is high.
Disclosure of Invention
In view of the above, the invention provides a reconfigurable mining storage battery power supply charging system, which can solve the problems that the input and output voltages of a mining charging system are fixed, the charging requirements of various storage batteries cannot be met, the space utilization rate of a charging chamber is low and the like in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the embodiment of the invention provides a reconfigurable mining storage battery power supply charging system, which comprises a rectifying unit, a main direct current conversion unit and N sub direct current conversion units, wherein the rectifying unit is used for rectifying the main direct current conversion unit; wherein:
the rectification unit comprises a rectification circuit, the rectification circuit comprises a first rectification input end, a first rectification output end and a second rectification output end, and the first rectification input end is used for being connected with an alternating current power supply;
the main direct current conversion unit comprises a main direct current conversion circuit, a first switch, a second switch, a third switch and a fourth switch, the main direct current conversion circuit comprises a first main input end, a second main input end, a first main output end and a second main output end, the first main input end is connected with the first rectification output end through the first switch, the second main input end is connected with the second rectification output end through the second switch, the first main output end is connected with a first end of the third switch, a second end of the third switch is used for connecting a load, the second main output end is connected with a first end of the fourth switch, and a second end of the fourth switch is used for connecting the load;
each of the sub-dc conversion units includes a sub-dc conversion circuit, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch and a twelfth switch, the sub-dc conversion circuit includes a first sub-input end, a second sub-input end, a first sub-output end and a second sub-output end, the first sub-input end is connected with the first rectification output end through the fifth switch, the second sub-input end is connected with the second rectification output end through the sixth switch, the first sub-output end of the sub-dc conversion circuit is connected with a first end of the eleventh switch, a second end of the eleventh switch is used for connecting a load, the second sub-output end of the sub-dc conversion circuit is connected with a first end of the twelfth switch, and a second end of the twelfth switch is used for connecting the load;
the first branch input end of the first branch direct current conversion unit is connected with the second main input end through a seventh switch, the first branch input end of the ith branch direct current conversion unit is connected with the second branch input end of the i-1 th branch direct current conversion unit through a seventh switch, the first branch output end of the first branch direct current conversion unit is connected with the second main output end through an eighth switch and is connected with the first main output end through a ninth switch, the first branch output end of the ith branch direct current conversion unit is connected with the second branch output end of the i-1 th branch direct current conversion unit through an eighth switch and is connected with the first branch output end of the i-1 th branch direct current conversion unit through a ninth switch, the second branch output end of the first branch direct current conversion unit is connected with the second main output end through a tenth switch, and the second branch output end of the ith branch direct current conversion unit is connected with the second branch input end of the i-1 th branch direct current conversion unit through a tenth switch Connecting;
wherein i and N are positive integers, and i is more than or equal to 2 and less than or equal to N.
Optionally, the rectifier circuit is one of a single-phase rectifier circuit and a three-phase rectifier circuit.
Optionally, the rectifier circuit is any one of an uncontrolled rectifier circuit and a controllable rectifier circuit.
Optionally, the main dc conversion circuit and/or the sub dc conversion circuit is/are formed by a dc-dc converter.
Optionally, any one of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, and the tenth switch, the eleventh switch, and the twelfth switch is any one of a mechanical switch, a relay, and a semiconductor switch, or a combination of any more thereof.
The technical scheme of the invention has the following beneficial effects:
according to the reconfigurable mining storage battery power supply charging system provided by the embodiment of the invention, the main direct current conversion unit and the plurality of sub direct current conversion units are controlled to work cooperatively, so that the system can work in various input and output modes to adapt to power supply systems of different voltage grades of a mine, the charging requirements of various storage batteries are met, the use flexibility of the mining charging system is greatly improved, and the space utilization rate of an underground charging chamber is improved.
Drawings
FIG. 1 is a schematic structural diagram of a reconfigurable mining storage battery power supply charging system provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a case where the number of the dc-dc converting units provided in the embodiment of the present invention is two;
fig. 3 is a schematic structural diagram of a charging system operating in an input-series output-series mode according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a charging system operating in an input-series-output-parallel mode according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a charging system operating in an input-series output independent mode according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a charging system operating in an input-series output-series independent series-parallel mode according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a charging system operating in an input-series output-parallel independent series-parallel mode according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a charging system operating in an input-output parallel-output series mode according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a charging system operating in an input-parallel/output-parallel mode according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a charging system operating in an input-parallel output independent mode according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a charging system operating in an input-parallel output-series independent series-parallel mode according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a charging system operating in an input-parallel output-parallel independent series-parallel mode according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a charging system operating in an input-parallel-output series mode according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a charging system operating in an input-parallel/output-parallel mode according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a charging system operating in an input-parallel output independent mode according to an embodiment of the present invention;
fig. 16 is a schematic structural diagram of a charging system operating in an input-parallel-output series-independent-parallel mode according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of a charging system operating in an input parallel-serial output parallel independent parallel-serial mode according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides a structural schematic diagram of a reconfigurable mining storage battery power supply charging system, where the system may include a rectification unit 1, a main dc conversion unit 2, and N sub dc conversion units 3, where the rectification unit 1 includes a rectification circuit, where the rectification circuit includes a first rectification input end, a first rectification output end, and a second rectification output end, the first rectification input end is used to connect with an ac power supply, the rectification circuit is used to rectify an input ac power to output a dc power, the first rectification output end may serve as an anode of the output dc power, and the second rectification output end may serve as a cathode of the output dc power.
In the embodiment of the present invention, the main dc converting unit 2 includes a main dc converting circuit 21, a first switch K1, a second switch K2, a third switch K3 and a fourth switch K4, the main dc converting circuit 21 includes a first main input terminal, a second main input terminal, a first main output terminal and a second main output terminal, wherein the first main input terminal of the main dc converting circuit 21 is connected to the first rectifying output terminal of the rectifying circuit of the rectifying unit 1 through the first switch K1, the second main input terminal of the main dc converting circuit 21 is connected to the second rectifying output terminal of the rectifying circuit of the rectifying unit 1 through the second switch K2, the first main output terminal of the main dc converting circuit 21 is connected to a first terminal of the third switch K3, a second terminal of the third switch K3 is used for connecting to a load, the second main output terminal of the main dc converting circuit 21 is connected to a first terminal of the fourth switch K4, and a second terminal of the fourth switch K4 is used for connecting to a load, the dc conversion circuit 21 is used for converting the input dc power to output dc power with different characteristics, and the first main output terminal may be used as the positive pole of the output dc power, and the second main output terminal may be used as the negative pole of the output dc power.
In the embodiment of the present invention, the system may include N scalable dc-dc conversion units 3, where N is a positive integer, each dc-dc conversion unit 3 includes a dc-dc conversion circuit 31, a fifth switch K5, a sixth switch K6, a seventh switch K7, an eighth switch K8, a ninth switch K9, a tenth switch K10, an eleventh switch K11, and a twelfth switch K12, and the dc-dc conversion circuit 31 includes a first sub-input end, a second sub-input end, a first sub-output end, and a second sub-output end; the first branch input end of the sub-dc conversion circuit 31 is connected with the first rectification output end of the rectification circuit through a fifth switch K5, the second branch input end of the sub-dc conversion circuit 31 is connected with the second rectification output end of the rectification circuit through a sixth switch K6, the first branch output end of the sub-dc conversion circuit 31 is connected with the first end of an eleventh switch K11, the second end of the eleventh switch K11 is used for connecting a load, the second branch output end of the sub-dc conversion circuit 31 is connected with the first end of a twelfth switch K12, and the second end of the twelfth switch K12 is used for connecting the load; the dc-dc converter circuit 31 is used to convert the input dc power to output dc power with different characteristics, and a first output terminal of the dc-dc converter circuit 31 may be a positive terminal of the output dc power, and a second output terminal may be a negative terminal of the output dc power.
In the embodiment of the present invention, the first branch input terminal of the first branch dc-to-dc conversion unit 3 is connected to the second main input terminal of the main dc-to-dc conversion circuit 21 through the seventh switch K7, the first branch input terminal of the i-th branch dc-to-dc conversion unit is connected to the second branch input terminal of the i-1-th branch dc-to-dc conversion unit through the seventh switch K7, for example, the first branch input terminal of the 2-th branch dc-to-dc conversion unit is connected to the second branch input terminal of the 1-th branch dc-to-dc conversion unit through the seventh switch K7, the first branch input terminal of the 3-rd branch dc-to-dc conversion unit is connected to the second branch input terminal of the 2-th branch dc-to-dc conversion unit through the seventh switch K; the first branch output end of the first branch dc-to-dc conversion unit 3 is connected to the second main output end of the main dc-to-dc conversion circuit 21 through an eighth switch K8, the first branch output end of the first branch dc-to-dc conversion unit 3 is further connected to the first main output end of the main dc-to-dc conversion circuit 21 through a ninth switch K9, the first branch output end of the i-th branch dc-to-dc conversion unit 3 is connected to the second branch output end of the i-1-th branch dc-to-dc conversion unit 3 through an eighth switch K8, and the first branch output end of the i-th branch dc-to-dc conversion unit 3 is further connected to the first branch output end of the i-1-th branch dc-to-dc conversion unit 3 through a ninth switch K9, for example, the first branch output end of the 2-th branch dc-to-dc conversion unit 3 is connected to the second branch output end of the 1-th branch dc-to-dc conversion unit through an eighth switch K8, and the first branch output end of the 2-th branch dc-to, and so on; the second branch output end of the first branch dc-to-dc conversion unit 3 is connected to the second main output end of the main dc-to-dc conversion circuit 21 through a tenth switch K10, the second branch output end of the ith branch dc-to-dc conversion unit 3 is connected to the second branch input end of the i-1 th branch dc-to-dc conversion unit 3 through a tenth switch K10, for example, the second branch output end of the 2 nd branch dc-to-dc conversion unit 3 is connected to the second branch input end of the 1 st branch dc-to-dc conversion unit 3 through a tenth switch K10, the second branch output end of the 3 rd branch dc-to-dc conversion unit 3 is connected to the second branch input end of the 2 nd branch dc-to-dc conversion unit 3 through a tenth switch K10, and so on; wherein i is a positive integer and i is more than or equal to 2 and less than or equal to N.
According to the reconfigurable mining storage battery power supply charging system provided by the embodiment of the invention, the system can work in different working modes by controlling the on-off states of different switches, so that the system is suitable for different application scenes and meets different charging requirements.
In some embodiments of the present invention, the rectifying circuit of the rectifying unit 1 may be a single-phase rectifying circuit or a three-phase rectifying circuit, and may be selected according to an applicable scenario.
In some embodiments of the present invention, the rectifying circuit of the rectifying unit 1 may be an uncontrolled rectifying circuit formed by diodes, or may be a controllable rectifying circuit formed by a controllable semiconductor switching device, and may be specifically selected according to a use scenario.
In some embodiments of the present invention, the main dc conversion circuit 21 may be formed by a dc-dc converter, and the sub-dc conversion circuit 31 may also be formed by a dc-dc converter, which may be used to process the input dc to output dc with different characteristics, so as to meet the charging requirement of the battery.
In other embodiments of the present invention, any one of the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5, the sixth switch K6, the seventh switch K7, the eighth switch K8, the ninth switch K9, the tenth switch K10, the eleventh switch K11 and the twelfth switch K12 may be any one of a mechanical switch, a relay and a semiconductor switch or a combination of any more of them, that is, the switch may be a manual mechanical switch, a relay or a controllable semiconductor device, or any combination of a mechanical switch, a relay and a controllable semiconductor device.
The following illustrates different working modes of the reconfigurable mining storage battery power supply charging system provided by the embodiment of the invention.
Referring to fig. 2, in the embodiment of the present invention, N is 2, that is, the number of the dc-dc converter units 3 is two.
Referring to fig. 3, in the embodiment of the invention, when N is 2, the first switch K1, the third switch K3, the seventh switch K7, and the eighth switch K8 are all turned on, the sixth switch K6 and the twelfth switch K12 of the second dc-dc converting unit 3 are turned on, and the remaining switches are all turned off, the system operates in the input-series output-series mode.
Referring to fig. 4, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the fourth switch K4, the seventh switch K7, the ninth switch K9 and the tenth switch K10 are all turned on, the sixth switch K6 of the second dc-dc converting unit 3 is turned on, and the other switches are turned off, the system operates in the input-series output-parallel mode.
Referring to fig. 5, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the fourth switch K4, the seventh switch K7, the eleventh switch K11, and the twelfth switch K12 are all turned on, the sixth switch K6 of the second dc-dc converting unit 3 is turned on, and the other switches are turned off, the system operates in the independent input-series output mode.
Referring to fig. 6, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the seventh switch K7, and the twelfth switch K12 are all turned on, the eighth switch K8 of the first dc-dc converting unit 3 is turned on, the sixth switch K6 and the eleventh switch K11 of the second dc-dc converting unit 3 are turned on, and the remaining switches are all turned off, the system operates in the input-series output-series independent series-parallel mode.
Referring to fig. 7, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the fourth switch K4, and the seventh switch K7 are all turned on, the ninth switch K9 and the tenth switch K10 of the first dc-dc converting unit 3 are turned on, the sixth switch K6, the eleventh switch K11, and the twelfth switch K12 of the second dc-dc converting unit 3 are turned on, and the remaining switches are all turned off, the system operates in the input-series output parallel independent series-parallel mode.
Referring to fig. 8, in the embodiment of the present invention, when N is 2, the first switch K1, the second switch K2, the third switch K3, the fifth switch K5, the sixth switch K6 and the eighth switch K8 are all turned on, the twelfth switch K12 of the second dc-dc converting unit 3 is turned on, and the other switches are turned off, the system operates in the input-parallel output series mode.
Referring to fig. 9, in the embodiment of the present invention, when N is 2, the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5, the sixth switch K6, the ninth switch K9, and the tenth switch K10 are all turned on, and the remaining switches are turned off, the system operates in the input parallel output parallel mode.
Referring to fig. 10, in the embodiment of the invention, when N is 2, the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5, the sixth switch K6, the eleventh switch K11, and the twelfth switch K12 are all turned on, and the rest of the switches are turned off, the system operates in the independent input-parallel output mode.
Referring to fig. 11, in the embodiment of the invention, when N is 2, and the first switch K1, the second switch K2, the third switch K3, the fifth switch K5, the sixth switch K6 and the twelfth switch K12 are all turned on, the eighth switch K8 of the first dc-dc converting unit 3 is turned on, the eleventh switch K11 of the second dc-dc converting unit 3 is turned on, and the remaining switches are all turned off, the system operates in the input parallel output series independent parallel mode.
Referring to fig. 12, in the embodiment of the invention, when N is 2, the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5 and the sixth switch K6 are all turned on, the ninth switch K9 and the tenth switch K10 of the first dc-dc converting unit 3 are all turned on, the eleventh switch K11 and the twelfth switch K12 of the second dc-dc converting unit 3 are all turned on, and the remaining switches are all turned off, the system operates in the input parallel output parallel independent parallel-parallel-serial mode.
Referring to fig. 13, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the sixth switch K6, and the eighth switch K8 are all turned on, the seventh switch K7 of the first dc-dc converting unit 3 is turned on, the fifth switch K5 and the twelfth switch K12 of the second dc-dc converting unit 3 are all turned on, and the remaining switches are all turned off, the system operates in the input-parallel-serial-output serial mode.
Referring to fig. 14, in the embodiment of the present invention, when N is 2, and the first switch K1, the third switch K3, the fourth switch K4, the sixth switch K6, the ninth switch K9, and the tenth switch K10 are all turned on, the seventh switch K7 of the first dc-dc converting unit 3 is turned on, the fifth switch K5 of the second dc-dc converting unit 3 is turned on, and the remaining switches are all turned off, the system operates in the input parallel-serial output parallel mode.
Referring to fig. 15, in the embodiment of the present invention, when N is 2, and the first switch K1, the third switch K3, the fourth switch K4, the sixth switch K6, the eleventh switch K11, and the twelfth switch K12 are all turned on, the seventh switch K7 of the first dc-dc converting unit 3 is turned on, the fifth switch K5 of the second dc-dc converting unit 3 is turned on, and the remaining switches are all turned off, the system operates in the independent input-parallel output mode.
Referring to fig. 16, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the sixth switch K6, and the twelfth switch K12 are all turned on, the seventh switch K7 and the eighth switch K8 of the first dc-dc converting unit 3 are all turned on, the fifth switch K5 and the eleventh switch K11 of the second dc-dc converting unit 3 are all turned on, and the remaining switches are all turned off, the system operates in the input-parallel-output series-independent-parallel mode.
Referring to fig. 17, in the embodiment of the present invention, when N is 2, the first switch K1, the third switch K3, the fourth switch K4, and the sixth switch K6 are all turned on, the seventh switch K7, the ninth switch K9, and the tenth switch K10 of the first dc-dc converting unit 3 are all turned on, the fifth switch K5, the eleventh switch K11, and the twelfth switch K12 of the second dc-dc converting unit 3 are all turned on, and the remaining switches are all turned off, the system will operate in the input parallel output parallel independent parallel mode.
According to the reconfigurable mining storage battery power supply charging system of the embodiment of the invention, the circuit topology can be reconfigured, so that the charging system can work in a plurality of working modes such as input series output series connection, input series output parallel connection, independent input parallel output series connection, input parallel output parallel connection, independent input parallel output series connection, and the like, the underground charging system is suitable for power supply systems of mines with different voltage levels, meets the charging requirements of various storage batteries, greatly improves the use flexibility of the mine charging system, improves the space utilization rate and unattended degree of the underground charging chamber, and promotes the energy-saving and intelligent development of the coal industry to a great extent.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (5)

1. A reconfigurable mining storage battery power supply charging system is characterized by comprising a rectifying unit, a main direct current conversion unit and N sub direct current conversion units; wherein:
the rectification unit comprises a rectification circuit, the rectification circuit comprises a first rectification input end, a first rectification output end and a second rectification output end, and the first rectification input end is used for being connected with an alternating current power supply;
the main direct current conversion unit comprises a main direct current conversion circuit, a first switch, a second switch, a third switch and a fourth switch, the main direct current conversion circuit comprises a first main input end, a second main input end, a first main output end and a second main output end, the first main input end is connected with the first rectification output end through the first switch, the second main input end is connected with the second rectification output end through the second switch, the first main output end is connected with a first end of the third switch, a second end of the third switch is used for connecting a load, the second main output end is connected with a first end of the fourth switch, and a second end of the fourth switch is used for connecting the load;
each of the sub-dc conversion units includes a sub-dc conversion circuit, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch and a twelfth switch, the sub-dc conversion circuit includes a first sub-input end, a second sub-input end, a first sub-output end and a second sub-output end, the first sub-input end is connected to the first rectification output end through the fifth switch, the second sub-input end is connected to the second rectification output end through the sixth switch, the first sub-output end of the sub-dc conversion circuit is connected to the first end of the eleventh switch, the second end of the eleventh switch is used for connecting to a load, the second sub-output end of the sub-dc conversion circuit is connected to the first end of the twelfth switch, and the second end of the twelfth switch is used for connecting to the load;
the first branch input end of the first branch direct current conversion unit is connected with the second main input end through a seventh switch, the first branch input end of the ith branch direct current conversion unit is connected with the second branch input end of the i-1 th branch direct current conversion unit through a seventh switch, the first branch output end of the first branch direct current conversion unit is connected with the second main output end through an eighth switch and is connected with the first main output end through a ninth switch, the first branch output end of the ith branch direct current conversion unit is connected with the second branch output end of the i-1 th branch direct current conversion unit through an eighth switch and is connected with the first branch output end of the i-1 th branch direct current conversion unit through a ninth switch, the second branch output end of the first branch direct current conversion unit is connected with the second main output end through a tenth switch, and the second branch output end of the ith branch direct current conversion unit is connected with the second branch input end of the i-1 th branch direct current conversion unit through a tenth switch Connecting;
wherein i and N are positive integers, and i is more than or equal to 2 and less than or equal to N.
2. The reconfigurable mining storage battery power supply charging system according to claim 1, wherein the rectification circuit is any one of a single-phase rectification circuit and a three-phase rectification circuit.
3. The reconfigurable mining storage battery power supply charging system according to claim 1, wherein the rectification circuit is any one of an uncontrolled rectification circuit and a controllable rectification circuit.
4. The reconfigurable mining storage battery power supply charging system according to claim 1, wherein the main direct-current conversion circuit and/or the sub-direct-current conversion circuit is/are formed by a direct-current-direct-current converter.
5. The reconfigurable mining battery power supply charging system of claim 1, wherein any one of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, the tenth switch, the eleventh switch, and the twelfth switch is any one of a mechanical switch, a relay, a semiconductor switch, or a combination of any plurality of switches.
CN202010459618.XA 2020-05-27 2020-05-27 Reconfigurable mining storage battery power supply charging system Pending CN111591164A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300617A (en) * 2021-05-10 2021-08-24 中国船舶重工集团公司第七二三研究所 Phased array radar power supply output voltage reconstruction system
CN114759652A (en) * 2022-06-15 2022-07-15 陕西延长石油金石钻采设备有限公司 Underground power supply system for electric drilling tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300617A (en) * 2021-05-10 2021-08-24 中国船舶重工集团公司第七二三研究所 Phased array radar power supply output voltage reconstruction system
CN114759652A (en) * 2022-06-15 2022-07-15 陕西延长石油金石钻采设备有限公司 Underground power supply system for electric drilling tool
CN114759652B (en) * 2022-06-15 2022-09-06 陕西延长石油金石钻采设备有限公司 Underground power supply system for electric drilling tool

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