CN220342044U - Energy storage control management system and energy storage container - Google Patents
Energy storage control management system and energy storage container Download PDFInfo
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- CN220342044U CN220342044U CN202321107595.1U CN202321107595U CN220342044U CN 220342044 U CN220342044 U CN 220342044U CN 202321107595 U CN202321107595 U CN 202321107595U CN 220342044 U CN220342044 U CN 220342044U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 107
- 238000006243 chemical reaction Methods 0.000 claims abstract description 63
- 238000004891 communication Methods 0.000 claims description 25
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- 230000005611 electricity Effects 0.000 description 9
- 230000002457 bidirectional effect Effects 0.000 description 7
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The utility model provides an energy storage control management system and an energy storage container. The energy storage control management system comprises an electric energy conversion module, a charging module, a switch module and an energy management system, wherein the energy management system can control the on and off of the switch through the charging module, and an external device can be at least connected with a charging unit in a conducting way. The energy management system acquires the state information of the external equipment, and controls the charging module to conduct and break the switch according to the state information of the external equipment, when part of the charging units are not conducted with any external equipment, the charging module can conduct the charging units with other external equipment which is started first, and the electric energy conversion module can convert electric energy provided by the alternating current power grid into direct current and provide the direct current for the charging module under the control of the energy management system, so that the plurality of charging units can charge the same external equipment, and the external equipment can be charged rapidly under the condition of low investment cost.
Description
Technical Field
The utility model relates to the technical field of energy storage, in particular to an energy storage control management system and an energy storage container.
Background
In the related art, the energy storage container can be used for charging electric equipment, such as an electric automobile. The charging mode for the electric automobile mainly comprises a low-power alternating-current charging pile and a high-power direct-current charging pile. The low-power alternating-current charging pile is low in charging speed and long in charging time. The high-power direct-current charging pile is high in charging speed, but the high-power direct-current charging pile is high in cost.
Disclosure of Invention
The utility model provides an energy storage control management system and an energy storage container, which can realize quick charging of external equipment under the condition of low investment cost.
In a first aspect, the present utility model provides an energy storage control management system, comprising:
the electric energy conversion module is used for being connected with an alternating current power grid;
the charging module is connected with the electric energy conversion module and comprises a plurality of charging units;
the switch module comprises a plurality of switches, and the switches are respectively connected with the charging unit and external equipment;
the energy management system is in communication connection with the electric energy conversion module, the charging module and the external equipment;
the power conversion module can realize the mutual conversion of alternating current and direct current, the charging module can perform power interaction with the power conversion module, the charging module is in communication connection with the switch module, the energy management system can control the on and off of the switch through the charging module, and one external device can be at least in communication connection with one charging unit.
In one embodiment, the number of the charging units is m, the number of the external devices is n, m is greater than or equal to n, the switch module comprises m switch groups, one switch group comprises n switches connected in parallel, one end of each of the switches of the same switch group is connected with the same charging unit, and the other ends of the switches of the same switch group are respectively connected with one external device.
In one embodiment, the status information of the external device includes a busy status and an idle status;
the energy management system is configured to control a charging unit to be conducted with the external device through the charging module when the state information of the external device is the busy state; and when the state information of the external equipment is in the idle state, the energy management system controls all the charging units to be disconnected with the external equipment through the charging module.
In one embodiment, the energy management system is configured to obtain information of the charging units that are not in communication with any one of the external devices when the number of the external devices in the busy state is smaller than n, and control the charging module to cause the charging units that are not in communication with any one of the external devices to be in communication with the external device in the busy state.
In one embodiment, when the absolute value of the difference between the number of the external devices in the busy state and n is greater than 1, the energy management system is configured to control the charging module to turn on the charging unit that is not turned on with any of the external devices with the external device that is first in the busy state.
In one embodiment, the busy state includes the external device outputting power to a terminal device, the terminal device inputting power to the external device;
the idle state comprises the idle state of the external equipment, the full charge state of the terminal equipment and the full discharge state of the terminal equipment.
In one embodiment, the energy storage control management system further comprises:
the energy storage module is used for storing and releasing electric energy;
the converging module is connected with the energy storage module and the electric energy conversion module and is used for converging electric energy;
the energy management system is used for acquiring state information of the confluence module and controlling the confluence module according to the state information.
In one embodiment, the energy storage control management system further comprises:
the switch is used for the energy management system to be in communication connection with the bus module, the electric energy conversion module, the charging module and the external equipment.
In one embodiment, the energy storage control management system further comprises:
the photovoltaic module is used for converting light energy into electric energy, the photovoltaic module is in communication connection with the energy management system, and the photovoltaic module is connected with the electric energy conversion module, the charging module and the converging module.
In a second aspect, the present utility model provides an energy storage container, including the energy storage control management system described above.
The utility model has the beneficial effects that:
the energy storage control management system comprises an electric energy conversion module, a charging module, a switching module and an energy management system, wherein the switching module comprises a plurality of switches which are respectively connected with a charging unit and external equipment, the energy management system is in communication connection with the external equipment to acquire state information of the external equipment, and the charging module is controlled to conduct and disconnect the switches according to the state information of the external equipment, so that the conduction and disconnection between any charging unit and any external equipment are realized, when part of the charging units are not conducted with any external equipment, namely, part of the charging units are in an idle state, the charging module can conduct the charging units with other external equipment which are started first, and the electric energy conversion module can convert electric energy provided by an alternating current power grid into direct current and provide the direct current for the charging module under the control of the energy management system, so that the charging units can charge the same external equipment, the charging speed is improved, and the external equipment can be charged rapidly under the condition of low investment cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system topology of an energy storage control management system provided by the present utility model;
fig. 2 is a schematic structural diagram of an energy storage container according to the present utility model.
Reference numerals illustrate:
the energy storage control management system 1, the electric energy conversion module 10, the electric energy conversion unit 11, the charging module 20, the charging unit 21, the switching module 30, the alternating current network 40, the energy management system 50, the energy storage module 60, the battery pack 61, the SBMU slave 62, the bus module 70, the MBMU master 71, the switch 80, the photovoltaic module 90, the controller 91, the external device 100, the terminal device 200, and the energy storage container 2.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
In the related art, a mode of charging an electric automobile by adopting an energy storage container mainly comprises a low-power alternating current charging pile and a high-power direct current charging pile. The low-power alternating-current charging pile is low in charging speed and long in charging time. The high-power direct-current charging pile is high in charging speed, but the high-power direct-current charging pile is high in cost.
As shown in fig. 1, the present utility model provides an energy storage control management system 1, which includes an electric energy conversion module 10, a charging module 20, a switch module 30, and an energy management system 50, wherein the electric energy conversion module 10 is used for connecting with an ac power grid 40; a charging module 20 is connected to the power conversion module 10, the charging module 20 including a plurality of charging units 21; the switch module 30 includes a plurality of switches, one end of which is connected to the charging unit 21, and the other end of which is used to connect to an external device 100; the energy management system 50 is in communication connection with the electric energy conversion module 10, the charging module 20 and the external device 100, the electric energy conversion module 10 can implement mutual conversion between alternating current and direct current, the charging module 20 can perform electric energy interaction with the electric energy conversion module 10, the charging module 20 is in communication connection with the switch module 30, the energy management system 50 can control on and off of the switch through the charging module 20, and one external device 100 can be at least in communication connection with one charging unit 21.
In the present utility model, the energy storage control management system 1 includes an electric energy conversion module 10, a charging module 20, a switching module 30 and an energy management system 50, where the switching module 30 includes a plurality of switches respectively connected to the charging unit 21 and the external device 100, the energy management system 50 is communicatively connected to the external device 100, obtains state information of the external device 100, and controls the charging module 20 to turn on and off the switches according to the state information of the external device 100, so as to achieve on and off between any charging unit 21 and any external device 100, and when a part of the charging units 21 is not turned on with any external device 100, i.e., the part of the charging units 21 is in an idle state, the charging unit 21 is turned on with other external devices 100 that are started first, and the electric energy conversion module 10 can convert electric energy provided by the ac power grid 40 into direct current and provide the direct current to the charging module 20 under the control of the energy management system 50, so that the plurality of charging units 21 can charge the same external device 100, and increase charging speed, thereby rapidly charge the external device 100 with low investment cost.
The power conversion module 10 is used for being connected with an ac power grid 40 to realize bidirectional conversion between ac power and dc power. The power conversion module 10 and the ac power grid 40 may further include a plurality of switches therebetween for controlling the connection and disconnection of the ac power grid 40 and the power conversion module 10. The power conversion module 10 may be a PCS tank (Power Conversion System, energy storage converter). The power conversion module 10 includes a dc end and an ac end, wherein the dc end may be connected to the charging module 20 and exchange dc power with the charging module 20, the ac end may be connected to the ac power grid 40, and the ac end exchanges ac power with the ac power grid 40. The PCS cabinet may include a plurality of power conversion units 11. For example, the electric energy conversion unit 11 may be a plurality of 100KW PCS modules, and the number and power of the PCS modules may be set according to actual requirements, which is not limited by the present utility model.
The charging module 20 is connected to the power conversion module 10, for example, the charging module 20 may be connected to a dc terminal of the power conversion module 10. The charging module 20 includes a plurality of charging units 21. For example, the charging module 20 may be a charging cabinet, the charging unit 21 may be a bidirectional charger module, and the bidirectional charger module may supply power to the external device 100 or supply power of the external device 100 to the power conversion module 10 to realize bidirectional flow of power. The rated power of the bidirectional charger module may be 100KW, but is not limited thereto, and the rated power of the charging unit 21 may be set according to the charging speed.
The switch module 30 includes a plurality of switches, one end of which is connected to the charging unit 21, and the other end of which is connected to the external device 100. The switch module 30 may be a relay switch cabinet. The external device 100 may be a charging peg or other charging terminal.
The energy management system 50 is communicatively connected to the charging module 20 and the external device 100, and obtains the state information of the external device 100 and the state information of the charging module 20. The energy management system 50 may control the charging module 20 to turn on and off the switch according to the state information of the external device 100. For example, when the external device 100 needs to be charged or discharged, the energy management system 50 may acquire status information of the external device 100, and the energy management system 50 issues an instruction to the charging module 20 to cause the charging module 20 to control a switch between one of the charging units 21 and the external device 100 to be turned on. When the external device 100 does not need to be charged or discharged, the energy management system 50 gives an instruction to the charging module 20, so that the charging module 20 can control the corresponding switch to be turned off.
The energy management system 50 is communicatively connected to the power conversion module 10, and the energy management system 50 may obtain information about the power conversion module 10 and issue instructions to the power conversion module 10 to control the operating states of the respective modules according to the information. For example, the energy management system 50 may perform charge-discharge control or real-time data interaction, etc. on the power conversion module 10.
As shown in fig. 1, a switch is provided between any one of the charging units 21 and any one of the external devices 100. An external device 100 may be conductively connected to at least one charging unit 21. Thus, when the charging unit 21 is in an idle state, the charging unit 21 can be connected to an external device 100 in a conductive manner to charge the external device 100. By simultaneously charging the same external device 100 with a plurality of charging units 21, the charging speed can be increased without increasing the investment cost.
Meanwhile, since a plurality of charging units 21 may be used to charge simultaneously, thereby increasing the charging speed, the power of the charging units 21 may be low, thereby reducing the investment cost of the system.
The technical scheme of the present utility model will be described with reference to specific embodiments.
In one embodiment, as shown in FIG. 1, the number of the charging units 21 is m, and the number of the external devices 100 is n, where m is equal to or greater than n. Wherein m and n are positive integers greater than or equal to 1. The switch module 30 includes m switch groups, one switch group includes n switches connected in parallel, one end of each of the switches of the same switch group is connected to the same charging unit 21, and the other ends of each of the switches of the same switch group are respectively connected to one external device 100. For example, the number of the charging units 21 may be 6, while the number of the external devices 100 may be 5. By setting the number of charging units 21 to be greater than the number of external devices 100, at least 2 charging units 21 can be simultaneously charged to the same external device 100, thereby increasing the charging speed.
In one embodiment, the status information of the external device 100 includes a busy status and an idle status; the energy management system 50 is configured such that, when the status information of the external device 100 is the busy status, the energy management system 50 issues an instruction to the charging module 20, and the charging module 20 controls a charging unit 21 to be connected to the external device 100; when the state information of the external device 100 is the idle state, the energy management system 50 issues an instruction to the charging module 20, and the charging module 20 controls all the charging units 21 to be disconnected from the external device 100.
It should be noted that, in one embodiment, to ensure the minimum charging power of the external device 100, one charging unit 21 may be configured to charge only one external device 100 at a time. In another embodiment, one charging unit 21 may also be configured to charge a plurality of external devices 100 at one time. By controlling the on and off states of the switch connected to the charging unit 21, the charging unit 21 can be turned on with one or more external devices 100. In the present utility model, the charging of only one external device 100 at a time by one charging unit 21 is described, but it should not be construed as limiting the present utility model.
Further, in one embodiment, the energy management system 50 is configured such that, when the number of the external devices 100 in the busy state is less than n, the energy management system 50 obtains information of the charging units 21 that are not connected to any of the external devices 100, and controls the charging module 20 to connect the charging units 21 that are not connected to any of the external devices 100 to one of the external devices 100 in the busy state. Thereby realizing that the plurality of charging units 21 charge the same external device 100, and improving the charging speed.
Further, on the basis of the above embodiment, when the absolute value of the difference between the number of the external devices 100 in the busy state and n is greater than 1, that is, at least 2 charging units 21 are in the idle state, the 2 charging units 21 are not energized with any one external device 100, and at this time, 2 charging units 21 may be simultaneously allocated to the same external device 100. For example, in one embodiment, the 2 charging units 21 may be simultaneously allocated to the external device 100 that is first in the busy state, that is, the 2 charging units 21 charge the external device 100 that has the longest on-time, so that the external device 100 that is started first may complete charging first.
In the above embodiment, the busy state includes the external device 100 outputting power to a terminal device 200, the terminal device 200 inputting power to the external device 100; the idle state includes the external device 100 being idle, the terminal device 200 being in a full charge state, and the terminal device 200 being in a full discharge state. The busy state in the present utility model is mainly described in terms of the external device 100 outputting power to a terminal device 200, and the terminal device 200 inputting power to the external device 100 is similar. The terminal device 200 may be an electric vehicle or the like. The external device 100 outputs electric energy to a terminal device 200, which corresponds to the charging pile charging the electric vehicle, and the terminal device 200 inputs electric energy to the external device 100, which corresponds to the electric vehicle selling the electric vehicle to the charging pile.
In the above embodiment, the energy storage control management system 1 further includes an energy storage module 60, and a converging module 70, where the energy storage module 60 is used for storing and releasing electric energy, and the converging module 70 is connected with the energy storage module 60 and the electric energy conversion module 10 and is used for converging electric energy; the bus module 70 is communicatively connected to the energy management system 50, and the energy management system 50 is configured to obtain status information of the bus module 70 and control the bus module 70 according to the status information.
The energy storage module 60 may be a battery cluster. Each battery cluster may include a battery pack 61 and an SBMU slave 62 (Sub Battery Management Unit, battery management system slave). For example, each battery pack 61 may be composed of, but not limited to, 1 and 48 strings of 280AH cells. The power of the battery may be adjusted according to the requirements of the charging module 20, the external device 100.
The collecting module 70 may be connected to the energy storage module 60 and the power conversion module 10 for collecting power. For example, the convergence module 70 may be a convergence cabinet. The bus bar is used to collect dc output voltages of the plurality of energy storage modules 60, and may include an MBMU master 71 (Main Battery Management Unit, battery management system master). The MBMU master 71 of the bus module 70 performs information interaction with the SBMU of the energy storage module 60, for example, the MBMU master 71 of the bus module 70 and the SBMU of the energy storage module 60 may be in CAN communication connection. The MBMU master 71 of the bus module 70 performs information interaction with the power conversion module 10, and the MBMU master 71 of the bus module 70 may perform information interaction with the energy management system 50.
The information interaction manner between the modules CAN be CAN communication or Ethernet communication, which is not limited by the utility model.
Further, the energy storage control management system 1 may further include a switch 80, where the switch 80 performs information interaction with the MBMU master 71, the power conversion module 10, the charging module 20, and the energy management system 50 through ethernet.
Further, in the above embodiment, the energy storage control management system 1 further includes a photovoltaic module 90, where the photovoltaic module 90 is configured to convert light energy into electric energy, and the photovoltaic module 90 is communicatively connected to the energy management system 50 or the switch 80, and the photovoltaic module 90 is connected to the electric energy conversion module 10, the charging module 20, and the collecting module 70. The photovoltaic module 90 may be disposed outside the energy storage control management system 1. The photovoltaic module 90 may be disposed beside the external device 100, for example, the photovoltaic module 90 may be disposed on a parking roof near the charging stake.
The photovoltaic module 90 may also include a controller 91. For example, the controller 91 may be an MPPT (Maximum Power Point Tracking ) controller, where an input of the controller 91 is connected to the photovoltaic module 90, and an output of the controller 91 is connected to a dc bus of the bus module 70. The MPPT controller may communicate with the energy management system 50 through a switch 80. The MPPT controller may be integrated in the energy storage control management system 1. The power of the controller 91 may be matched to the power of the charging module 20, for example, when the charging module 20 is 6 bidirectional chargers of 100KW, the controller 91 may be 600KW.
The status information of the external device 100 includes a busy status and an idle status, the busy status including that the external device 100 outputs power to a terminal device 200, and the terminal device 200 inputs power to the external device 100; the idle state includes the external device 100 being idle, the terminal device 200 being in a full charge state, and the terminal device 200 being in a full discharge state. For example, when the external device 100 needs to be charged, the external device 100 is in a busy state, and when the external device 100 needs to be discharged, the external device 100 is in a busy state. The external device 100 is idle when the external device 100 is not connected to the terminal device 200, and the external device 100 is idle when the external device 100 is connected to the terminal device 200, but the terminal device 200 is in a full charge state or a full discharge state.
The energy management system 50 communicates with the external device 100, acquires state information of the external device 100, and controls the charging module 20 according to the state information of the external device 100, and the charging module 20 controls on and off of the switch of the switching module 30. When the external device 100 is in a busy state, the energy management system 50 gives an instruction to the charging module 20, and the charging module 20 controls the switch to be turned on; when the external device 100 is in the idle state, the energy management system 50 issues an instruction to the charging module 20, and the charging module 20 controls the switch to be turned off.
The energy management system 50 is in communication connection with the charging module 20, the electric energy conversion module 10 and the external device 100, acquires state information of the charging module 20, state information of the external device 100 and state information of the electric energy conversion module 10, creates an energy flow strategy according to the state information, and issues instructions to the charging module 20 and the electric energy conversion module 10 based on the energy flow strategy, so as to control the electric energy conversion module 10 and the charging module 20 to charge and discharge.
Specifically, the energy management system 50 acquires the status information of the external device 100, and determines whether the external device 100 needs to be charged or whether the external device 100 needs to sell electricity.
When the external device 100 needs to be charged, the energy management system 50 creates the energy flow strategy to balance the power provided by the energy storage control management system 1 with the power supply and demand of the external device 100; when the external device 100 needs to sell electricity, the energy management system 50 creates the energy flow strategy to balance the power consumed by the energy storage control management system 1 with the power supplied by the external device 100.
Specifically, when the external device 100 needs to be charged, the energy storage control management system 1 detects that the external device 100 needs to be charged, and the energy management system 50 acquires state information of a module capable of providing electric energy, and determines the state of each module in the system according to the state information, so that the electric energy provided by the energy storage control management system 1 is balanced with the electric energy supply and demand of the external device 100 which needs to be charged.
When the external device 100 needs to sell electricity, the energy storage control management system 1 detects that the external device 100 needs to sell electricity, the energy management system 50 obtains state information of modules capable of consuming electric energy, and determines states of the modules in the system according to the state information, so that electric energy consumed by the energy storage control management system 1 is balanced with electric energy supply and demand of the external device 100 needing to be charged.
The energy management system 50 instructs the power conversion module 10 and the charging module 20 to operate according to the energy flow strategy based on the energy flow strategy.
In one embodiment, when the energy storage control management system 1 includes the electric energy conversion module 10, the charging module 20, the switching module 30, the energy management system 50, the energy storage module 60, the converging module 70, and the photovoltaic module 90, the energy flow strategy is: when the external device 100 needs to be charged, the priority order of the electric energy provided by the energy storage control management system 1 is as follows: a photovoltaic module 90, an energy storage module 60, an ac grid 40; when the external device 100 needs to discharge, the priority order of the electric energy consumed by the energy storage control management system 1 is: an energy storage module 60, an ac power grid 40.
That is, when the external device 100 needs to be charged, the electric power provided by the photovoltaic module 90 is preferentially used. If the photovoltaic module 90 provides insufficient power, the energy storage module 60 and the photovoltaic module 90 are employed to collectively provide power. If the energy storage module 60 and the photovoltaic module 90 together provide insufficient power, the energy storage module 60, the photovoltaic module 90 and the ac power grid 40 together provide power.
When the external device 100 needs to sell electricity, the energy storage module 60 is preferably charged, and if the energy storage module 60 is fully charged and the external device 100 still has electricity, the external device 100 discharges the ac power grid 40.
The energy flow strategy of the present utility model is further described below. Where Ppv refers to the energy provided by the photovoltaic module 90, ppv >0 when the photovoltaic module 90 is in a power generating state, ppv <0 when the photovoltaic module 90 is in a non-power generating state. Pb refers to the power of the energy storage module 60, pb <0 when the energy storage module 60 is in a charged state, and Pb >0 when the energy storage module 60 is in a discharged state. PL refers to the charge or discharge power of the external device 100, PL <0 when the external device 100 is in a charged state; when the external device 100 is in the power selling state, PL >0. When the whole energy storage control management system 1 works, the energy supply and demand balance in the whole system, namely ppv+pb+pl+pg=0, needs to be achieved through the coordinated control of the energy management system 50, wherein each parameter is defined as described above, and is respectively positive or negative according to the states of each module. When the module is in a standby state, the corresponding parameter is 0.
In one embodiment, when the energy storage control management system 1 detects that the external device 100 needs to be charged, the energy management system 50 communicates with each module, acquires state information of each module in the system, determines whether Ppv >0 is true, and when the photovoltaic module 90 is in a power generation state, preferentially uses the photovoltaic module 90 to charge the external device 100. If the generated power of the photovoltaic module 90 is greater than the charging power of the external device 100, the photovoltaic module 90 is used to charge the energy storage module 60 until the energy storage module 60 is fully charged. If the power of the photovoltaic module 90 is still excessive, the ac power grid 40 is discharged.
In one embodiment, when the photovoltaic module 90 is used to charge the external device 100 and the power of the photovoltaic module 90 is less than the charging power of the external device 100, the energy storage module 60 is used to supply power at the same time; if not, the energy management system 50 controls the power conversion module 10 to operate in a rectification mode to power the DC bus to charge the external device 100.
In one embodiment, when the photovoltaic module 90 is in the non-generating state, the energy management system 50 controls the energy storage module 60 to charge the external device 100, and if the energy storage module 60 is not sufficiently charged, the energy management system 50 controls the power conversion module 10 and the ac power grid 40 to jointly charge the external device 100.
In one embodiment, when the energy storage control management system 1 detects that the external device 100 needs to sell electricity, the energy management system 50 communicates with each module in the system to obtain status information of each module. If the photovoltaic module 90 is in the power generation state at this time, the energy storage module 60 is preferably charged by the photovoltaic module 90. If the energy storage module 60 is fully charged, the energy management system 50 controls the external device 100 to discharge the ac power grid 40. If the energy storage module 60 is not fully charged, the energy management system 50 controls the charging unit 21 to charge the energy storage module 60. If the energy storage module 60 is fully charged, the energy management system 50 controls the charging unit 21 to discharge to the ac power grid 40.
In one embodiment, when the energy storage control management system 1 detects that the external device 100 does not need to be charged or sold, and the photovoltaic module 90 is in a non-power generating state, the energy management system 50 controls the modules to be in a standby idle state. When the photovoltaic module 90 is in the power generation state, the energy management system 50 controls the photovoltaic module 90 to charge the energy storage unit until the energy storage unit is fully charged, and then the energy management system 50 controls the photovoltaic module 90 and the power conversion module 10 to discharge to the ac power grid 40.
Through the energy flow strategy, when the power supply of the ac power grid 40 is interrupted, the energy storage module 60 and the photovoltaic module 90 can still be used to charge the external device 100, so that uninterrupted power supply can be realized. By adjusting the capacities of the energy storage module 60, the photovoltaic module 90, the uninterrupted charging time of the external device 100 can be filled. Meanwhile, in the energy flow strategy, the generated energy of the photovoltaic module 90 is preferentially supplied to the external apparatus 100 for charging, and the electric energy of the energy storage module 60 is used as the standby electric energy. By the interaction of the photovoltaic module 90 and the energy storage module 60, the purchase of electricity from the ac power grid 40 can be minimized. On the other hand, the terminal device 200, such as an electric vehicle, can sell electricity to the ac power grid 40 through the charging module 20, so that bidirectional energy flow is realized. Through the arrangement, the terminal equipment 200 can be charged rapidly, peak clipping and valley filling of a power grid are realized, power grid impact is reduced, energy utilization rate is improved, and investment cost of the whole power grid system is reduced.
It should be noted that, in one embodiment, when the energy management system 50 detects that the plurality of external devices 100 are started, the energy management system 50 sequentially allocates one charging unit 21 according to the starting sequence of the external devices 100 and closes the corresponding switch to charge the charging unit. If there is no redundant charging unit 21, the external device 100 is charged in this state. If the energy management system 50 detects that there are redundant charging units 21, the energy management system 50 controls the switch corresponding to the external device 100 started first to close the charging of the redundant charging units 21, the energy management system 50 further judges whether the power of the charging module 20 corresponding to the external device 100 started first is redundant, if yes, the switch of one of the charging units 21 and the external device 100 started first is disconnected, and then the charging unit 21 is allocated to the external device 100 started second. The energy management system 50 continuously detects the status information of each external device 100 and allocates the charging unit 21 corresponding to the external device 100 in full charge to the external device 100 that was started first.
With the above arrangement, when some of the external devices 100 are in idle state, the plurality of charging units 21 are used to charge the same external device 100, so as to shorten the charging time of the terminal device 200, improve the energy utilization rate, and reduce the investment cost of the whole energy storage control management system 1.
As shown in fig. 2, the present utility model further provides an energy storage container 2, which includes the energy storage control management system 1, and the energy storage control management system 1 may be located inside the energy storage container 2.
In some embodiments, the energy storage container 2 may further comprise a photovoltaic module 90, the photovoltaic module 90 being located outside the energy storage container 2, for example, the photovoltaic module 90 may be located on top of the energy storage container 2, or the photovoltaic module 90 may be located near an external device 100, such as a parking shed roof.
The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.
Claims (9)
1. An energy storage control management system (1), characterized by comprising:
the electric energy conversion module (10) is used for being connected with an alternating current power grid (40);
a charging module (20) connected to the power conversion module (10), the charging module (20) including a plurality of charging units (21);
a switch module (30), the switch module (30) comprising a plurality of switches, the switches respectively connecting the charging unit (21) and an external device (100);
an energy management system (50) in communication with the power conversion module (10), the charging module (20), and the external device (100);
the power conversion module (10) can realize the mutual conversion of alternating current and direct current, the charging module (20) can perform power interaction with the power conversion module (10), the charging module (20) is in communication connection with the switch module (30), the energy management system (50) can control the on and off of the switch through the charging module (20), and one external device (100) can be at least in conductive connection with one charging unit (21); the number of the charging units (21) is m, the number of the external devices (100) is n, m is larger than or equal to n, the switch module (30) comprises m switch groups, one switch group comprises n switches connected in parallel, one end of each switch of the same switch group is connected with the same charging unit (21), and the other ends of each switch of the same switch group are respectively connected with one external device (100).
2. The energy storage control management system (1) according to claim 1, wherein the status information of the external device (100) includes a busy state and an idle state;
the energy management system (50) is configured such that when the state information of the external device (100) is the busy state, the energy management system (50) controls a charging unit (21) to be conducted with the external device (100) through the charging module (20); when the state information of the external device (100) is the idle state, the energy management system (50) controls all the charging units (21) to be disconnected from the external device (100) through the charging module (20).
3. The energy storage control management system (1) according to claim 2, wherein the energy management system (50) is configured such that, when the number of the external devices (100) in the busy state is smaller than n, the energy management system (50) acquires information of the charging unit (21) that is not in communication with any one of the external devices (100), and controls the charging module (20) to cause the charging unit (21) that is not in communication with any one of the external devices (100) to be in communication with one of the external devices (100) in the busy state.
4. The energy storage control management system (1) according to claim 3, wherein when an absolute value of a difference between the number of the external devices (100) in the busy state and n is greater than 1, the energy management system (50) is configured to control the charging module (20) to cause the charging unit (21) that is not in communication with any of the external devices (100) to be in communication with the external device (100) that is first in the busy state.
5. The energy storage control management system (1) according to claim 2, wherein the busy state includes the external device (100) outputting power to a terminal device (200), the terminal device (200) inputting power to the external device (100);
the idle state includes the external device (100) being idle, the terminal device (200) being in a full charge state, the terminal device (200) being in a full discharge state.
6. The energy storage control management system (1) according to any one of claims 1 to 5, wherein the energy storage control management system (1) further comprises:
an energy storage module (60) for storing and releasing electrical energy;
a collecting module (70) connected with the energy storage module (60) and the electric energy conversion module (10) for collecting electric energy;
the energy management system (50) is used for acquiring state information of the bus module (70) and controlling the bus module (70) according to the state information.
7. The energy storage control management system (1) according to claim 6, wherein the energy storage control management system (1) further comprises:
the switch (80), the energy management system (50) is connected with the bus module (70), the electric energy conversion module (10), the charging module (20) and the external equipment (100) in a communication way through the switch (80).
8. The energy storage control management system (1) according to claim 7, wherein the energy storage control management system (1) further comprises:
the photovoltaic module (90) is used for converting light energy into electric energy, the photovoltaic module (90) is in communication connection with the energy management system (50), and the photovoltaic module (90) is connected with the electric energy conversion module (10), the charging module (20) and the converging module (70).
9. An energy storage container (2), characterized by comprising an energy storage control management system (1) according to any of claims 1 to 8.
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| CN202321107595.1U CN220342044U (en) | 2023-05-09 | 2023-05-09 | Energy storage control management system and energy storage container |
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