CN212373184U - 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
CN212373184U
CN212373184U CN202020916079.3U CN202020916079U CN212373184U CN 212373184 U CN212373184 U CN 212373184U CN 202020916079 U CN202020916079 U CN 202020916079U CN 212373184 U CN212373184 U CN 212373184U
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switch
branch
output end
main
sub
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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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    • 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
    • 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 utility model provides a mining battery power charging system of restructural type, the system includes rectification unit, main DC transform unit and a N branch DC transform unit, the rectification unit includes rectifier circuit, main DC transform unit includes main DC transform circuit, each divide the DC transform unit to include a branch DC transform circuit. According to the utility model discloses restructural type mining battery power charging system through control main direct current transform unit and a plurality of branch direct current transform unit collaborative work for the system can work in multiple input/output mode, with the power supply system who adapts to the different voltage classes of mine, satisfies the demand of charging of all kinds of batteries, has improved mining charging system's use flexibility by a wide margin, has improved the space utilization of charging chamber in the pit.

Description

Reconfigurable mining storage battery power supply charging system
Technical Field
The utility model relates to a mining power supply technical field, concretely relates to restructural type mining storage battery power 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 this, the utility model provides a reconfigurable type mining storage battery power supply charging system can solve among the prior art mining charging system input/output voltage fixed, can't satisfy the demand of charging and the low scheduling problem of charging chamber space utilization of all kinds of batteries.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the embodiment of the utility model provides a reconfigurable mining storage battery power supply charging system, including rectification unit, main direct current conversion unit and N divide 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 utility model discloses above-mentioned technical scheme's beneficial effect as follows:
according to the utility model discloses restructural type mining battery power charging system through control main direct current transform unit and a plurality of branch direct current transform unit collaborative work for the system can work in multiple input/output mode, with the power supply system who adapts to the different voltage classes of mine, satisfies the demand of charging of all kinds of batteries, has improved mining charging system's use flexibility by a wide margin, has improved the space utilization of charging chamber in the pit.
Drawings
Fig. 1 is a schematic structural diagram of a reconfigurable mining storage battery power supply charging system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a case where the number of the sub dc conversion units provided by 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-connection 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 series-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/serial 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-serial 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-serial output series-parallel independent parallel-serial 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 some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present 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 be connected to 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 end, a second main input end, a first main output end and a second main output end, wherein the first main input end of the main dc converting circuit 21 is connected to the first rectifying output end of the rectifying circuit of the rectifying unit 1 through the first switch K1, the second main input end of the main dc converting circuit 21 is connected to the second rectifying output end of the rectifying circuit of the rectifying unit 1 through the second switch K2, the first main output end of the main dc converting circuit 21 is connected to the first end of the third switch K3, the second end of the third switch K3 is used for connecting to a load, the second main output end of the main dc converting circuit 21 is connected to the first end of the fourth switch K4, the second end 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 expandable branch dc conversion units 3, N is a positive integer, each branch dc conversion unit 3 includes a branch 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, the branch dc conversion circuit 31 includes a first branch input end, a second branch input end, a first branch output end and a second branch 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 end of the first branch dc conversion unit 3 is connected to the second main input end of the main dc conversion circuit 21 through the seventh switch K7, the first branch input end of the ith branch dc conversion unit is connected to the second branch input end of the i-1 th branch dc conversion unit through the seventh switch K7, for example, the first branch input end of the 2 nd branch dc conversion unit is connected to the second branch input end of the 1 st branch dc conversion unit through the seventh switch K7, the first branch input end of the 3 rd branch dc conversion unit is connected to the second branch input end of the 2 nd branch dc conversion unit through the seventh switch K7, and so on; 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 utility model discloses restructural type mining battery power charging system through the break-make state of controlling different switches, can make system work under the mode of difference to adapt to different application scenes, satisfy different charging demands.
The utility model discloses an in some embodiments, the rectifier circuit of rectification unit 1 can be single-phase rectifier circuit, also can be three-phase rectifier circuit, specifically can select according to the scene that is suitable for.
The utility model discloses an in some embodiments, the rectifier circuit of rectification unit 1 can adopt the uncontrolled rectifier circuit that the diode constitutes, also can be for adopting among the controllable rectifier circuit that controllable type semiconductor switch device constitutes, specifically can select according to the scene of using.
In some embodiments of the present invention, the main dc converting circuit 21 may be composed of a dc-dc converter, the sub dc converting circuit 31 may also be composed of a dc-dc converter, and the dc-dc converter may be used to process the input dc to output the dc with different characteristics, so as to satisfy the charging requirement of the storage 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 included dc-dc conversion units 3 is two.
Referring to fig. 3, 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 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 rest of the switches are 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 rest of the switches are all turned off, the system will operate 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 all turned off, the system will operate in the independent input/serial 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 sub dc conversion unit 3 is turned on, the sixth switch K6 and the eleventh switch K11 of the second sub dc conversion unit 3 are turned on, and the rest switches are all turned off, the system will work in the input-series output-series independent series-parallel mode.
Referring to fig. 7, in the embodiment of the present invention, when the value of N is 2, and 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 other switches are all turned off, the system will operate 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 rest of the switches are all turned off, the system will operate in the input parallel output series mode.
Referring to fig. 9, in the embodiment of the present invention, when N is 2, and 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, the system will operate in the input parallel output parallel mode when the other switches are turned off.
Referring to fig. 10, in the embodiment of the present invention, when N is 2, and 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, the system will operate in the independent input-parallel output mode.
Referring to fig. 11, in the embodiment of the present 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 sub dc conversion unit 3 is turned on, the eleventh switch K11 of the second sub dc conversion unit 3 is turned on, and the rest switches are all turned off, the system will operate in the input parallel output series independent parallel mode.
Referring to fig. 12, in the embodiment of the present invention, when N is 2, and 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 rest of the switches are all turned off, the system will operate in the input parallel output parallel independent hybrid 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 rest switches are all turned off, the system will operate in the series mode of input, series-parallel connection and output.
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 sub dc conversion unit 3 is turned on, the fifth switch K5 of the second sub dc conversion unit 3 is turned on, and the rest switches are all turned off, the system will operate 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 rest switches are all turned off, the system will operate 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 rest of the switches are all turned off, the system will operate in the input parallel-serial output serial independent parallel-serial mode.
Referring to fig. 17, in the embodiment of the present invention, when the value of N is 2, and 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 sub dc conversion unit 3 are all turned on, the fifth switch K5, the eleventh switch K11 and the twelfth switch K12 of the second sub dc conversion unit 3 are all turned on, and the rest of the switches are all turned off, the system will operate in the input parallel independent parallel hybrid mode.
According to the reconfigurable mining storage battery power supply charging system of the embodiment of the utility model, 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.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

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.
CN202020916079.3U 2020-05-27 2020-05-27 Reconfigurable mining storage battery power supply charging system Active CN212373184U (en)

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