CN211579673U - Distributed storage battery controller and control system in building - Google Patents

Distributed storage battery controller and control system in building Download PDF

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Publication number
CN211579673U
CN211579673U CN202020630173.2U CN202020630173U CN211579673U CN 211579673 U CN211579673 U CN 211579673U CN 202020630173 U CN202020630173 U CN 202020630173U CN 211579673 U CN211579673 U CN 211579673U
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storage battery
direct current
communication module
power supply
bus
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王福林
江亿
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Tsinghua University
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Tsinghua University
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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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/14—Energy storage units

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The utility model discloses a distributing type battery controller and control system in building. The storage battery controller comprises a DC/DC bidirectional buck-boost converter module, a communication module and a control chip; the control end and the communication module of the DC/DC bidirectional buck-boost converter module are both connected with the control chip; the communication module is used for sending a power supply connection signal of the storage battery body or receiving a power supply connection signal of an external storage battery; the control chip is used for controlling the DC/DC bidirectional buck-boost converter module to adjust the storage battery body to discharge when a preset time period or when the communication module receives an external storage battery power supply receiving signal. Adopt the utility model discloses a distributed storage battery controller and control system in building adopts the mode of intercommunication between the battery to compensate the unbalance nature between generating power and the power consumption, has improved energy efficiency.

Description

Distributed storage battery controller and control system in building
Technical Field
The utility model relates to an electric power system technical field especially relates to a distributing type battery controller and control system in building.
Background
At present, indoor power supply of buildings adopts an alternating current power supply mode. However, almost all electrical devices use dc power, such as liquid crystal displays, personal computers, dc inverter air conditioners, LED lighting fixtures, and the like. Since the electric equipment uses direct current, the direct current is directly supplied in the building, so that a rectifying and voltage-regulating device of each electric equipment can be saved, the hardware cost is saved, and the power loss caused by alternating current-direct current conversion is eliminated. In addition, the same power is transmitted, the direct current transmission and distribution efficiency is higher than the alternating current transmission and distribution efficiency, and the power loss is less. Experimental tests show that compared with alternating current power supply, the direct current power supply in the building can improve the power supply and distribution efficiency by 7%, reduce the hardware cost of electrical equipment by 8% and save the building space occupied by the equipment by 30%.
With the development of photovoltaic power generation technology and the reduction of cost, more and more buildings are provided with renewable energy utilization devices such as photovoltaic power generation devices, and the power generated by the photovoltaic power generation devices is direct current, so that the photovoltaic power generation devices are more suitable for being transmitted and distributed by adopting a direct current distribution system. However, the photovoltaic power generation power and the building power consumption are generally difficult to be matched with each other, the power generation power and the power consumption are different, the energy production and consumption are unbalanced, and the utilization rate of renewable energy is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distributed battery controller and control system in building adopts the mode of intercommunication between the battery to compensate the unbalance nature between generating power and the power consumption, has improved energy efficiency.
In order to achieve the above object, the utility model provides a following scheme:
an in-building distributed battery controller comprising:
the DC/DC bidirectional buck-boost converter comprises a DC/DC bidirectional buck-boost converter module, a communication module and a control chip;
the control end of the DC/DC bidirectional buck-boost converter module and the communication module are both connected with the control chip; the communication module is used for sending a storage battery body power supply connection signal or receiving an external storage battery power supply connection signal; the control chip is used for controlling the DC/DC bidirectional buck-boost converter module to adjust the storage battery body to discharge when a preset time period or when the communication module receives an external storage battery power supply connection signal.
Optionally, the communication module is further configured to receive a demand-side response control signal of the municipal power grid; the control chip is used for controlling the DC/DC bidirectional buck-boost conversion module to change the stored power or the discharge power of the storage battery body when the communication module receives a demand side response control signal of the municipal power grid.
Optionally, the communication module is one or more of a 485 bus communication module, an ethernet communication module, a WiFi wireless communication module, a LORA wireless communication module, and a bluetooth wireless communication module.
Optionally, the battery controller further includes:
the storage battery comprises a storage battery first connecting terminal, a storage battery second connecting terminal, a bus first connecting terminal and a bus second connecting terminal;
two ends of the first connecting terminal of the storage battery are respectively connected with the anode of the storage battery body and a first interface end of the DC/DC bidirectional buck-boost converter module;
two ends of a second connecting terminal of the storage battery are respectively connected with the negative electrode of the storage battery body and a first interface end of the DC/DC bidirectional buck-boost converter module;
two ends of the first connecting terminal of the bus are respectively connected with a direct current power supply positive bus and a second interface end of the DC/DC bidirectional buck-boost converter module;
and two ends of the second bus connecting terminal are respectively connected with the DC power supply negative bus and the second interface end of the DC/DC bidirectional buck-boost converter module.
Optionally, the battery controller further includes:
a housing;
the DC/DC bidirectional buck-boost converter module, the communication module and the control chip are all arranged in the shell.
The utility model also provides a distributed battery control system in the building uses foretell distributed battery controller in the building, distributed battery control system in the building, include:
the system comprises a municipal power grid system, a renewable energy power generation device, a direct current/direct current conversion device, an alternating current/direct current conversion device, a direct current power supply bus, a plurality of storage battery controllers and a plurality of storage batteries;
the input end of the storage battery controller is connected with the direct current power supply bus, and the control end of the storage battery controller is connected with the storage battery;
the input end of the direct current/direct current conversion device is connected with the output end of the renewable energy power generation device, and the output end of the direct current/direct current conversion device is connected with the direct current power supply bus; the direct current/direct current conversion device is used for converting direct current voltage generated by the renewable energy power generation device into voltage of the direct current power supply bus;
the input end of the alternating current/direct current conversion device is connected with the municipal power grid system, and the output end of the alternating current/direct current conversion device is connected with the direct current power supply bus; the alternating current/direct current conversion device is used for converting alternating current generated by the municipal power grid system into direct current;
the direct current power supply bus is connected with an electric load and used for supplying power to the electric load.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a distributed battery controller and control system in building, battery controller includes the two-way buck-boost converter module of DC/DC, communication module and control chip, send battery body power supply and connect the signal or receive external battery power supply and connect the signal through communication module, control chip control DC/DC two-way buck-boost converter module adjusts battery body and carries out power discharge and then respond to the signal of connecting of external battery, the mode that adopts intercommunication between the battery remedies the unbalance between generating power and the power consumption, the energy efficiency is improved.
In addition, the communication module is also used for receiving a demand side response control signal of the municipal power grid, and the control chip controls the DC/DC bidirectional buck-boost converter module to change the storage power or the discharge power of the storage battery body, so that the peak load shifting capacity of the power grid is improved, the peak load is reduced, the installed capacity and the investment cost of the power grid are reduced, the load rate of a power plant and the power grid in a low-ebb period is improved, the power generation efficiency is improved, and the energy waste is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a distributed storage battery controller in a building according to an embodiment of the present invention;
fig. 2 is a schematic structural relationship diagram of a distributed storage battery control system in a building according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a distributed battery controller and control system in building adopts the mode of intercommunication between the battery to compensate the unbalance nature between generating power and the power consumption, has improved energy efficiency.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Examples
Fig. 1 is a schematic structural diagram of a distributed storage battery controller in a building according to an embodiment of the present invention. As shown in fig. 1, a distributed battery controller in a building includes: the device comprises a DC/DC bidirectional buck-boost current conversion module 10, a communication module and a control chip 1. The control end and the communication module of the DC/DC bidirectional buck-boost converter module 10 are both connected with the control chip 1; the communication module is used for sending a power supply connection signal of the storage battery body or receiving a power supply connection signal of an external storage battery; the control chip 1 is used for controlling the DC/DC bidirectional buck-boost converter module 10 to regulate the storage battery body to discharge when a preset time period or when the communication module receives an external storage battery power supply connection signal. The communication module is also used for receiving a demand side response control signal of the municipal power grid; the control chip 1 is used for controlling the DC/DC bidirectional buck-boost converter module 10 to change the storage power or the discharge power of the storage battery body when the communication module receives a demand side response control signal of the municipal power grid. When the stored power or the discharged power of the battery body is determined in response to the control signal according to the demand side of the municipal power grid, the stored power or the discharged power of the battery body is determined according to the following formula:
Pb(t)＝Pg-PL(t)
in the formula, Pb(t) represents the storage power or discharge power of the battery body at time t, Pb(t) is a positive value indicating storage, Pb(t) negative values indicate discharge; pgRepresenting the electrical power draw determined by the demand side of the municipal power grid in response to the control signal; pL(t) represents the load power at time t.
An in-building distributed battery controller, further comprising: a battery first terminal 11, a battery second terminal 12, a bus bar first terminal 8, a bus bar second terminal 9, and a case (not shown in the figure). The DC/DC bidirectional buck-boost converter module 10, the communication module and the control chip 1 are all arranged in the shell and play a role in protection. Two ends of the first connecting terminal 11 of the storage battery are respectively connected with the positive electrode of the storage battery body and the first interface end of the DC/DC bidirectional buck-boost converter module 10. Two ends of the second connecting terminal 12 of the storage battery are respectively connected with the negative electrode of the storage battery body and the first interface end of the DC/DC bidirectional buck-boost converter module 10. Two ends of the first bus connecting terminal 8 are respectively connected with a direct current power supply positive bus and a second interface end of the DC/DC bidirectional buck-boost converter module 10. Two ends of the second bus connecting terminal 9 are respectively connected with the direct-current power supply negative bus and a second interface end of the DC/DC bidirectional buck-boost converter module 10.
The communication module is one or more of a 485 bus communication module 2, an Ethernet communication module 5 and a wireless communication module 7. Wherein, wireless communication module includes: WiFi wireless communication module, LORA wireless communication module and bluetooth wireless communication module. The 485 bus communication module 2 comprises an A pole wiring terminal 3 and a B pole wiring terminal 4; the ethernet communication module 5 comprises an ethernet communication RJ45 port 6. One or more communication modules (2, 5, 7) can be provided, and are not limited to the three communication modes. The distributed storage battery controller in the building is provided with an external or built-in wireless communication antenna.
The control chip 1 is a master control singlechip, and the master control singlechip, the communication modules (2, 5 and 7) and the direct current/direct current (DC/DC) bidirectional voltage regulation and current transformation module 10 are connected through a printed circuit board and mutually transmit information. The main control single chip determines the magnitude and direction of the charging/discharging power of the storage battery, and transmits the signals of the magnitude and direction of the charging/discharging power of the storage battery to a direct current/direct current (DC/DC) bidirectional voltage-regulating current-converting module 10. The communication modules (2, 5 and 7) are used for communicating with other storage battery controllers, receiving power supply connecting signals from other storage batteries and transmitting the power supply connecting signals to the main control single chip microcomputer. The direct current/direct current (DC/DC) bidirectional voltage-regulating converter module 10 regulates the magnitude of current input to or output from the battery according to the magnitude and direction signals of charging/discharging power of the battery, and protects the battery from overcharge and overdischarge.
Fig. 2 is a schematic structural relationship diagram of a distributed storage battery control system in a building according to an embodiment of the present invention. As shown in fig. 2, a distributed battery control system in a building includes: the system includes a municipal power grid system 402, a renewable energy power generation device 400, a dc/dc conversion device 401, an ac/dc conversion device 403, a dc power supply bus 404, a plurality of battery controllers (406, 413), and a plurality of batteries (407, 412). The room 1 includes a first lighting device 408, a first socket 409, and a first room other electric device 410 in addition to a battery controller 406 and a battery 407. The room No. 2 411 includes a second lighting device 414, a second socket 415, and a second other electrical device 416 in addition to the battery controller 413 and the battery 412.
The input terminal of the battery controller 406 is connected to the dc power supply bus 404, and the control terminal of the battery controller 406 is connected to the battery 407. The input end of the direct current/direct current conversion device 401 is connected with the output end of the renewable energy power generation device 400, and the output end of the direct current/direct current conversion device 401 is connected with a direct current power supply bus 404; the dc/dc conversion device 401 is configured to convert a dc voltage generated by the renewable energy power generation device 400 into a voltage of a dc power supply bus. The input end of the AC/DC conversion device 403 is connected with the municipal power grid system 402, and the output end of the AC/DC conversion device 403 is connected with the DC power supply bus 404; the ac/dc conversion device 403 is used to convert ac power generated by the utility grid system 402 into dc power. The DC power supply bus is connected to an electric load (408, 409, 410) for supplying power to the electric load. The input end of the battery controller 413 is connected to the dc power supply bus 404, and the control end of the battery controller 413 is connected to the battery 412. The DC supply bus is connected to the consumer (414, 415, 416) for supplying power to the consumer.
When the storage battery 412 in the room 411 runs out, the communication module in the battery controller 413 sends out an access signal, and when the battery controller 406 in the room 405 receives the access signal, the output current of the storage battery 407 is adjusted, and power is supplied to the electric equipment in the room 405 and the room 411.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (6)

1. A distributed battery controller in a building, comprising:
the DC/DC bidirectional buck-boost converter comprises a DC/DC bidirectional buck-boost converter module, a communication module and a control chip;
the control end of the DC/DC bidirectional buck-boost converter module and the communication module are both connected with the control chip; the communication module is used for sending a storage battery body power supply connection signal or receiving an external storage battery power supply connection signal; the control chip is used for controlling the DC/DC bidirectional buck-boost converter module to adjust the storage battery body to discharge when a preset time period or when the communication module receives an external storage battery power supply connection signal.
2. The in-building distributed battery controller of claim 1, wherein the communications module is further configured to receive a demand-side response control signal for a municipal power grid; the control chip is used for controlling the DC/DC bidirectional buck-boost conversion module to change the stored power or the discharge power of the storage battery body when the communication module receives a demand side response control signal of the municipal power grid.
3. The in-building distributed battery controller of claim 1, wherein the communication module is one or more of a 485 bus communication module, an ethernet communication module, a WiFi wireless communication module, a LORA wireless communication module, and a bluetooth wireless communication module.
4. The in-building distributed battery controller according to claim 1, further comprising:
the storage battery comprises a storage battery first connecting terminal, a storage battery second connecting terminal, a bus first connecting terminal and a bus second connecting terminal;
two ends of the first connecting terminal of the storage battery are respectively connected with the anode of the storage battery body and a first interface end of the DC/DC bidirectional buck-boost converter module;
two ends of a second connecting terminal of the storage battery are respectively connected with the negative electrode of the storage battery body and a first interface end of the DC/DC bidirectional buck-boost converter module;
two ends of the first connecting terminal of the bus are respectively connected with a direct current power supply positive bus and a second interface end of the DC/DC bidirectional buck-boost converter module;
and two ends of the second bus connecting terminal are respectively connected with the DC power supply negative bus and the second interface end of the DC/DC bidirectional buck-boost converter module.
5. The in-building distributed battery controller according to claim 1, further comprising:
a housing;
the DC/DC bidirectional buck-boost converter module, the communication module and the control chip are all arranged in the shell.
6. An in-building distributed storage battery control system to which the in-building distributed storage battery controller according to any one of claims 1 to 5 is applied, characterized by comprising:
the system comprises a municipal power grid system, a renewable energy power generation device, a direct current/direct current conversion device, an alternating current/direct current conversion device, a direct current power supply bus, a plurality of storage battery controllers and a plurality of storage batteries;
the input end of the storage battery controller is connected with the direct current power supply bus, and the control end of the storage battery controller is connected with the storage battery;
the input end of the direct current/direct current conversion device is connected with the output end of the renewable energy power generation device, and the output end of the direct current/direct current conversion device is connected with the direct current power supply bus; the direct current/direct current conversion device is used for converting direct current voltage generated by the renewable energy power generation device into voltage of the direct current power supply bus;
the input end of the alternating current/direct current conversion device is connected with the municipal power grid system, and the output end of the alternating current/direct current conversion device is connected with the direct current power supply bus; the alternating current/direct current conversion device is used for converting alternating current generated by the municipal power grid system into direct current;
the direct current power supply bus is connected with an electric load and used for supplying power to the electric load.
CN202020630173.2U 2020-04-23 2020-04-23 Distributed storage battery controller and control system in building Active CN211579673U (en)

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CN202020630173.2U CN211579673U (en) 2020-04-23 2020-04-23 Distributed storage battery controller and control system in building

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Application Number Priority Date Filing Date Title
CN202020630173.2U CN211579673U (en) 2020-04-23 2020-04-23 Distributed storage battery controller and control system in building

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CN211579673U true CN211579673U (en) 2020-09-25

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