CN103326423A - Network communication and control system for non-equilibrium management photovoltaic lithium-ion energy storage module nodes - Google Patents
Network communication and control system for non-equilibrium management photovoltaic lithium-ion energy storage module nodes Download PDFInfo
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Abstract
The invention provides a network communication and control system for non-equilibrium management photovoltaic lithium-ion energy storage module nodes. The system comprises a module communication and control layer, a relay communication layer and a central communication and control layer from bottom to top, wherein the module communication and control layer further comprises one or a plurality of parallel photovoltaic lithium-ion energy storage module nodes, wherein the nodes are based on CAN communication, and external transmission interfaces are in mutual series connection with one another. The module communication and control layer is used for achieving energy management and external transmission of the photovoltaic lithium-ion energy storage module and external communication of the module. The relay communication layer further comprises one or a plurality of relay communication nodes which are connected in a tree shape and based on CAN communication, and the relay communication layer is used for node expansion and interlayer information processing and forwarding of the network communication and control system. The central communication and control layer further comprises a CAN/ Ethernet protocol conversion unit and a central monitoring unit comprising an Ethernet interface, and the central communication and control layer is used for achieving the transmission function of data uplink and control order downlink between the nodes of the relay communication layer and the module communication and control layer.
Description
Technical field
The present invention relates to the electric energy storage module of a kind of lack of balance management photovoltaic lithium node networking communication and control system.
Background technology
Solar energy has caused people's pay attention to day by day as a kind of novel energy, as its photovoltaic generation of one of mainly using wide market prospects are arranged.Yet the major defect of solar energy is that energy is unstable, have its daytime evening without, a little less than the fine reinforcing yin essence sky, usually need to be equipped with energy-storage battery and stabilize the instable impact of solar energy.Therefore, the photovoltaic energy storage electricity generation system is arisen at the historic moment, and it comprises for the photovoltaic cell that solar energy is converted to electric energy and is used for the energy-storage battery that the storage photovoltaic cell produces electric energy.
With regard to energy-storage battery, lithium battery has very large application potential with its higher energy density and long cycle life in the photovoltaic energy storage power field.Had in the market solar energy system specialized lithium battery pack to sell, domestic telecommunications operator is also actively investigating the application prospect of lithium battery in the communications field.In addition, lithium battery in many-sided application studies such as accumulation power supply, motor vehicles also among like a raging fire the development.Can predict, along with the progressively maturation of lithium battery technology, lithium battery will become the main force of photovoltaic generating system energy storage gradually.
In order to improve the fail safe of lithium ion battery group useful life and photovoltaic lithium electricity energy-storing and power-generating system, photovoltaic lithium electricity energy-storage system based on the management of lithium ion battery lack of balance has been proposed at present, its 26S Proteasome Structure and Function is, system comprises the photovoltaic power storage module of a plurality of mutual series connection, this each photovoltaic power storage module comprises that a lithium ionic cell unit and is used for to the photovoltaic cell unit of described lithium ionic cell unit charging, and comprise that further one is used for described photovoltaic cell unit and lithium ionic cell unit are carried out the energy management unit that power is controlled, in order to realize that described photovoltaic cell unit is to the charging of described lithium ionic cell unit, the discharge of described lithium ionic cell unit and the supplying power for outside of module, independence control by module, reduced the lithium-ion battery monomer capacity volume variance for systematic influence, realize the lack of balance management of cascaded lithium ion batteries group, improved service life cycle and the Security of the system of lithium ion battery group.
Characteristics according to the lack of balance management mode; a plurality of independent lack of balance management photovoltaic in the described lack of balance management photovoltaic lithium electric system/lithium electricity energy storage module all has independently energy management unit; when realizing described photovoltaic cell unit and the control of lithium ionic cell unit power; need can be with reliable orderly organizational form with the characteristic information of module to the up transmission of central monitoring system; and reception is from the down order of central monitoring system; and the self adaptation identification of realization module node and configuration etc.; to consist of thus node communication and the control network of scale; wherein; the intellectuality structure of network and the reliable communication of network are the key issues that this scale node networking communication and control need to solve; to realize the intelligent networking of system scale node; node locating and identification and nodal information in real time; reliable communication is satisfied system intelligence; the needs of real-time and reliability.In addition, taking full advantage of stratification, the interconnectivity network distribution type calculates and predict the comprehensive state-of-charge of whole lack of balance management photovoltaic lithium electric system and the expection power supply capacity of system, also is that the raising energy-storing and power-generating system is intelligent, the effective of reliability replenishes.And above-mentioned lack of balance management photovoltaic lithium electricity energy-storage system only is illustrated the cascade of the power stage of described lack of balance management photovoltaic lithium electricity energy storage module and the execution mode of expansion, and structure and the enforcement with regard to this scale node networking communication and control system does not effectively design.
Summary of the invention
In view of this, the necessary a kind of effective module node networking communication and control system that provides on described lack of balance management photovoltaic lithium electricity energy-storage system basis, when the photovoltaic cell unit of described lack of balance management photovoltaic lithium electricity energy storage module power stage and lithium ionic cell unit are carried out effective energy management, by system communication mechanism and rational communication and the control system topology of using high reliability, intelligently make up orderly system communication and control network, with the real-time, interactive of realization system information and the reliable management of system node, and by the information interaction between each communication layers, realization is to the predicting and evaluating of whole system power supply capacity, the final real-time that improves described lack of balance management photovoltaic lithium electricity energy storage module and even energy-storing and power-generating system, safety and reliability makes up intelligentized lack of balance management photovoltaic lithium electricity energy-storage system.
The electric energy storage module of a kind of lack of balance management photovoltaic lithium node networking communication and control system, its a bottom-up module communication and control layer, a trunking traffic layer and a central communication and key-course of comprising; Wherein, this module communication and control layer further comprises one or more parallel based on CAN photovoltaic lithium electricity communication and that the interface of externally transmitting electricity is connected mutually energy storage module node, is used for realizing the energy management of described photovoltaic lithium electricity energy storage module, the external correspondence with foreign country of transmission of electricity and module; This trunking traffic layer further comprises one or more trunking traffic nodes based on CAN communication with tree-like connection, is used for node expansion and interlayer information processing and the forwarding of this group-net communication and control system; This central communication and key-course comprise that further a CAN/ Ethernet protocol converting unit and contains the central monitoring unit of Ethernet interface, are used for by realizing data uplink and the descending function of control command between the node of trunking traffic layer and module communication and control layer.
Compared to prior art, the electric energy storage module of described lack of balance management photovoltaic lithium node networking communication and control system can manage on the photovoltaic lithium electricity energy-storage system power stage application foundation in lack of balance, stratification CAN bus network by the top-down electrical isolation that connected by Ethernet, be aided with reliable CAN bus and ethernet communication protocol, the intellectuality that can effectively realize orderly system communication and control network makes up, and guarantee simultaneously the robustness of described communication and control system from the software and hardware, realize system information in network in real time, reliable communication; Simultaneously, orderly communication and control network can be realized reliable node locating, can realize effective identification of isolated node quick location of malfunctioning node particularly, in conjunction with up nodal information, can intelligentized identification fault type and take appropriate measures, in conjunction with the advantage of existing lack of balance management photovoltaic lithium electricity energy-storage system in the lithium ion battery management, utilize the information interaction between each node layer to carry out the power supply capacity predicting and evaluating that described lack of balance is managed photovoltaic lithium electricity energy-storage system, further improve reliability and the intelligent level of whole system.
Description of drawings
The lack of balance management photovoltaic lithium electricity energy storage module node networking communication and control system cascade schematic diagram that Fig. 1 provides for the embodiment of the invention.
The lack of balance management photovoltaic lithium electricity energy storage module node networking communication and control system extension connection diagram that Fig. 2 provides for the embodiment of the invention.
The lack of balance management photovoltaic lithium electrical energy storage unit front view based on this module node networking communication and control system that Fig. 3 provides for the embodiment of the invention.
The lack of balance management photovoltaic lithium electrical energy storage unit rearview based on this module node networking communication and control system that Fig. 4 provides for the embodiment of the invention.
The lack of balance management photovoltaic lithium electricity energy-storage system schematic diagram based on this module node networking communication and control system that Fig. 5 provides for the embodiment of the invention.
The lack of balance management photovoltaic lithium electricity electric power system schematic diagram based on this module node networking communication and control system that Fig. 6 provides for the embodiment of the invention.
The main element symbol description
Lack of balance management photovoltaic lithium electricity energy storage module node 10
Lithium ionic cell unit 14
Module communications module communication and control node layer communication and control unit 16
Module communications module communication and control node layer energy management unit 17
Module communication and control node layer order reception/data send CAN Transmit-Receive Unit 18
Module communication and control node layer light-coupled isolation receiving element 19
Module node the first output 101
Module node the second output 102
Module communication and control node layer order reception/data send CAN bus interface CANH end 103
Module communication and control node layer order reception/data send CAN bus interface CANL end 104
Module communication and control node layer light-coupled isolation receiving element signal input part 105
Module communication and control node layer light-coupled isolation receiving element signal holds 106 altogether
Trunking traffic layer bottom trunking traffic node 20
Trunking traffic layer bottom trunking traffic node communication and control unit 22
Trunking traffic layer bottom trunking traffic node order reception/data send CAN Transmit-Receive Unit 23
Trunking traffic layer bottom trunking traffic node light-coupled isolation receiving element 24
Trunking traffic layer bottom trunking traffic node order transmission/data receiver CAN Transmit-Receive Unit 25
Trunking traffic layer bottom trunking traffic node multichannel allocation units 26
Trunking traffic layer bottom trunking traffic node irradiance testing circuit 27
Trunking traffic layer bottom trunking traffic node order reception/data send CAN bus interface CANH end 201
Trunking traffic layer bottom trunking traffic node order reception/data send CAN bus interface CANL end 202
Trunking traffic layer bottom trunking traffic node light-coupled isolation receiving element signal input part 203
Trunking traffic layer bottom trunking traffic node light-coupled isolation receiving element signal holds 204 altogether
Trunking traffic layer bottom trunking traffic node order transmission/data receiver CAN bus interface CANH end 205
Trunking traffic layer bottom trunking traffic node order transmission/data receiver CAN bus interface CANL end 206
Trunking traffic layer bottom trunking traffic node multichannel schedule of apportionment head passage 207
Trunking traffic layer bottom trunking traffic node multichannel allocation units end passage 208
Trunking traffic layer bottom trunking traffic node multichannel allocation units signal holds 209 altogether
Trunking traffic layer top layer trunking traffic node 30
Trunking traffic layer top layer trunking traffic node communication and control unit 32
Trunking traffic layer top layer trunking traffic node order reception/data send CAN Transmit-Receive Unit 34
Trunking traffic layer top layer trunking traffic node order transmission/data receiver CAN Transmit-Receive Unit 36
Trunking traffic layer top layer trunking traffic node multichannel allocation units 38
Trunking traffic layer top layer trunking traffic node order reception/data send CAN bus interface CANH end 301
Trunking traffic layer top layer trunking traffic node order reception/data send CAN bus interface CANL end 302
Trunking traffic layer top layer trunking traffic node order transmission/data receiver CAN bus interface CANH end 303
Trunking traffic layer top layer trunking traffic node order transmission/data receiver CAN bus interface CANL end 304
Trunking traffic layer top layer trunking traffic node multichannel schedule of apportionment head passage 305
Trunking traffic layer top layer trunking traffic node multichannel allocation units end passage 306
Trunking traffic layer top layer trunking traffic node multichannel allocation units signal holds 307 altogether
CAN/ Ethernet protocol converting unit 40
CAN/ Ethernet protocol modular converter 42
CAN/ Ethernet protocol converting unit order reception/data send ethernet interface 401
CAN/ Ethernet protocol converting unit order transmission/data receiver CAN bus communication interface CANH end 402
CAN/ Ethernet protocol converting unit order transmission/data receiver CAN bus communication interface CANL end 403
CSRC module 52 under the central monitoring unit
Ethernet communication module 54 under the central monitoring unit
Order transmission/data receiver ethernet interface 501 under the central monitoring unit
Lack of balance management photovoltaic lithium electrical energy storage unit 60
Lack of balance management photovoltaic lithium electrical energy storage unit the first output 62
Lack of balance management photovoltaic lithium electrical energy storage unit the second output 64
Lack of balance management photovoltaic lithium electrical energy storage unit framework 66
Converter positive input terminal 72
Converter negative input end 74
Converter the first output 76
Converter the second output 78
Lack of balance management photovoltaic lithium electricity energy-storage system framework 80
Lack of balance management photovoltaic lithium electricity electric power system bus interface and conversion unit of protocol framework 90
Lack of balance management photovoltaic lithium electricity electric power system bus interface and conversion unit of protocol Ethernet interface 92
Lack of balance management photovoltaic lithium electricity electric power system bus interface and conversion unit of protocol CAN bus interface CANH end 94
Lack of balance management photovoltaic lithium electricity electric power system bus interface and conversion unit of protocol CAN bus interface CANL end 96
Lack of balance management photovoltaic lithium electricity energy-storage system 100
Lack of balance management photovoltaic lithium electricity electric power system 200
Embodiment
Describe lack of balance photovoltaic lithium electricity energy storage module node communication and the control system of the embodiment of the invention in detail and use photovoltaic lithium electrical energy storage unit and the electric energy-storage system of photovoltaic lithium and the electric power system of this communication and control system below with reference to accompanying drawing.
See also Fig. 1, first embodiment of the invention provides the electric energy storage module of a kind of lack of balance management photovoltaic lithium node networking communication and control system, and its cascade structure is a bottom-up module communication and control layer, a trunking traffic layer and a central communication and the key-course of comprising; Wherein, this module communication and control layer further comprises one or more parallel based on CAN photovoltaic lithium electricity communication and that the interface of externally transmitting electricity can be connected mutually energy storage module node 10, is used for realizing the energy management of described photovoltaic lithium electricity energy storage module, the external correspondence with foreign country of transmission of electricity and module node 10; This trunking traffic layer further comprises one or more trunking traffic node 20 and top layer trunking traffic nodes 30 based on CAN communication with tree-like connection, is used for expansion and interlayer information processing and the forwarding of the lack of balance photovoltaic lithium electricity energy storage module node 10 of this group-net communication and control system; This central communication and key-course comprise that further a CAN/ Ethernet protocol converting unit 40 and contains the central monitoring unit 50 of Ethernet interface, be used for realizing data uplink and control command downlink transfer function between the lack of balance management photovoltaic lithium electricity energy storage module node 10 by trunking traffic node 20,30 and module communication and control layer.
Described lack of balance management photovoltaic lithium electricity energy storage module node 10 comprises a photovoltaic cell unit 12, one lithium ionic cell unit 14, one communication and control unit 16, one power control circuit unit 17, one order reception/data send CAN Transmit-Receive Unit 18, one light-coupled isolation receiving element 19, one external transmission of electricity the first output 101, one external transmission of electricity the second output 102, one order reception/data send CAN bus communication interface CANH end 103, one order reception/data send CAN bus communication interface CANL end 104, one light-coupled isolation receiving element signal input part 105, one light-coupled isolation receiving element signal holds 106 altogether.Described photovoltaic cell unit 12 all is electrically connected with power control circuit unit 17 with described lithium ionic cell unit 14, and by externally transmission of electricity the first output 101 and external transmission of electricity the second output 102 are powered to external loading.Described communication and control unit 16 is used for down order and the configuration message of described trunking traffic layer bottom trunking traffic node 20 are resolved, and according to the down order message power control circuit unit 17 operating states of described lack of balance management photovoltaic lithium electricity energy storage module node 10 are controlled, and the communication configuration of carrying out described lack of balance management photovoltaic lithium electricity energy storage module node 10 according to the downstream arrangements message, and the uplink data messages that realizes the characteristic information of described lack of balance management photovoltaic lithium electricity energy storage module node 10 is gathered and constructs described lack of balance management photovoltaic lithium electricity energy storage module node 10.Described power control circuit 17 is used for controlling the charging of the 12 pairs of described lithium ionic cell units 14 in described photovoltaic cell unit and the external output electricity of described photovoltaic cell unit 12 and described lithium ionic cell unit 14, and described lithium ionic cell unit 14 is carried out float management.Described light-coupled isolation receiving element 19 holds 106 to be electrically connected with the multichannel allocation units 26 of described trunking traffic layer bottom trunking traffic node 20 by light-coupled isolation receiving element signal input part 105 and light-coupled isolation receiving element signal altogether, is used for triggering the communication configuration feature of described lack of balance management photovoltaic lithium electricity energy storage module node 10.Described the first output 101 be connected output 102 and can realize being connected to export electricity with external electric equipment.
Described trunking traffic layer bottom trunking traffic node 20 comprises a communication and control unit 22, one order reception/data send CAN Transmit-Receive Unit 23, one light-coupled isolation receiving element 24, one order transmission/data receiver CAN Transmit-Receive Unit 25, one multichannel allocation units 26, one irradiance testing circuit 27, one order reception/data send CAN bus communication interface CANH end 201, one order reception/data send CAN bus communication interface CANL end 202, one light-coupled isolation receiving element signal input part 203, one light-coupled isolation receiving element signal holds 204 altogether, one order transmission/data receiver CAN bus communication interface CANH end 205, one order transmission/data receiver CAN bus communication interface CANL end 206, one multichannel allocation units signal output part, one multichannel allocation units signal holds 209 altogether.Described multichannel allocation units signal output part comprises that multichannel schedule of apportionment head passage 207 is to the multichannel distribution passage of multichannel allocation units end passage 208.Consider the needs of practical application, described irradiance testing circuit 27 is for detection of the irradiance information of a plurality of lacks of balance management photovoltaic lithiums electricity energy storage module nodes 10 of this described trunking traffic layer bottom trunking traffic node institute cascade, in order to characterize the average irradiance of these a plurality of cascade lacks of balance management photovoltaic lithiums electricity energy storage module nodes 10.Described communication and control unit 22 is used for down order and the configuration message of described trunking traffic layer top layer trunking traffic node 30 are resolved, and the communication that is used for described trunking traffic layer bottom trunking traffic node 20 configures, and with analysis result by described order send/data receiver CAN Transmit-Receive Unit 25 sends to corresponding lack of balance management photovoltaic lithium electricity energy storage module node 10, and according to the testing result of described irradiance testing circuit 27 by described order send/data receiver CAN Transmit-Receive Unit 25 sends down orders control messages, and send CAN Transmit-Receive Unit 23 by described order receptions/data and will characteristic information data message that manage the electric energy storage module of photovoltaic lithium node 10 from the described lack of balance of described order transmissions/data receiver CAN Transmit-Receive Unit 25 be carried out aggregation process and result is formed the up transmission of message.Order reception/the data of the lack of balance management photovoltaic lithium electricity energy storage module node 10 of described module communication and control layer send CAN Transmit-Receive Unit 18 and send CAN bus communication interface CANH end 103 and be connected reception/data to send order transmission/data receiver CAN bus communication interface CANH end 205 and order transmission/data receiver CAN bus communication interface CANL end 206 that CAN bus communication interface CANL end 104 connects respectively described trunking traffic layer bottom trunking traffic node 20 by its order reception/data, be electrically connected with the order transmission/data receiver CAN Transmit-Receive Unit 25 with described trunking traffic layer bottom trunking traffic node 20, consist of CAN communicator network, be used for the characteristic information data message that described lack of balance management photovoltaic lithium electricity energy storage module node 10 receives the described lack of balance management of down order and configuration message and up transmission photovoltaic lithium electricity energy storage module node 10.Described light-coupled isolation receiving element 24 holds 204 to be electrically connected with the multichannel allocation units 38 of described trunking traffic layer top layer trunking traffic node 30 by light-coupled isolation receiving element signal input part 203 and light-coupled isolation receiving element signal altogether, is used for triggering the communication configuration feature of described trunking traffic layer bottom trunking traffic node 20.
Described trunking traffic layer top layer trunking traffic node 30 comprises a communication and control unit 32, one order reception/data send CAN Transmit-Receive Unit 34, one order transmission/data receiver CAN Transmit-Receive Unit 36, one multichannel allocation units 38, one order reception/data send CAN bus communication interface CANH end 301, one order reception/data send CAN bus communication interface CANL end 302, one order transmission/data receiver CAN bus communication interface CANH end 303, one order transmission/data receiver CAN bus communication interface CANL end 304, one multichannel allocation units signal output part, one multichannel allocation units signal holds 307 altogether.Described multichannel allocation units signal output part comprises that multichannel schedule of apportionment head passage 305 is to the multichannel distribution passage of multichannel allocation units end passage 306.This described trunking traffic layer top layer trunking traffic node 30 is compared with described trunking traffic layer bottom trunking traffic node 20 does not have irradiance testing circuit 27, and these described trunking traffic layer top layer trunking traffic node 30 root nodes as the trunking traffic layer, each described lack of balance photovoltaic lithium electricity energy storage module node communication is with control system has and this described trunking traffic layer top layer trunking traffic node 30 is only arranged, and the while is also as communicate by letter with the control system CAN root node of tree-like structural network of the electric energy storage module of described lack of balance photovoltaic lithium node communication.Described communication and control unit 32 is used for down order and the configuration message of described central communication and key-course transmission are resolved, and with analysis result by described order send/data receiver CAN Transmit-Receive Unit 36 sends to corresponding trunking traffic layer bottom trunking traffic node 20, and will the data message from the described trunking traffic layer bottom trunking traffic node 20 of described order transmission/data receiver CAN Transmit-Receive Unit 36 be carried out aggregation process and result is formed the up transmission of message by described order receptions/data transmission CAN Transmit-Receive Unit 34.Order reception/the data of described trunking traffic layer bottom trunking traffic node 20 send CAN Transmit-Receive Unit 23 and send CAN bus communication interface CANH end 201 and be connected reception/data to send described order transmission/data receiver CAN bus communication interface CANH end 303 and order transmission/data receiver CAN bus communication interface CANL end 304 that CAN bus communication interface CANL end 202 connects respectively described trunking traffic layer top layer trunking traffic node 30 by described order reception/data, be electrically connected with the order transmission/data receiver CAN Transmit-Receive Unit 36 with described trunking traffic layer top layer trunking traffic node 30, consist of CAN communicator network, be used for the aggregation process data message that described trunking traffic layer bottom trunking traffic node 20 receives down order and configuration message and the described trunking traffic layer of up transmission bottom trunking traffic node 20.
Described CAN/ Ethernet protocol converting unit 40 comprises that a CAN/ Ethernet protocol modular converter 42, order reception/data send ethernet interface 401, an order transmission/data receiver CAN bus communication interface CANH end 402, one order transmission/data receiver CAN bus communication interface CANL end 403.Order reception/the data of described trunking traffic layer top layer trunking traffic node 30 send CAN Transmit-Receive Unit 34 and send CAN bus communication interface CANH end 301 and be connected reception/data to send described order transmission/data receiver CAN bus communication interface CANH end 402 and order transmission/data receiver CAN bus communication interface CANL end 403 that CAN bus communication interface CANL end 302 connects respectively described CAN/ Ethernet protocol converting unit by described order reception/data, be electrically connected with the CAN bus interface with described CAN/ Ethernet protocol converting unit 40, consist of CAN communicator network, this communicator network is the top layer CAN sub-network of described lack of balance management photovoltaic lithium electricity energy storage module node communication and control system, by the form expansion cascading CAN communicator network of described trunking traffic layer top layer trunking traffic node 30 with tree network, realize that the CAN communication network of described lack of balance management photovoltaic lithium electricity energy-storage system makes up by it.Described Ethernet protocol modular converter 42 is used for carrying out the bidirectional protocol conversion of CAN bus and Ethernet information and finishes bi-directional transmitting-receiving task.
Electrical characteristic according to the CAN bus transceiver, can not articulate the CAN communication node of theory unlimited in the single CAN communication network, thereby the CAN communication section that articulates of each CAN communicator network of embodiment of the invention suggestion to count be 65, wherein comprise a top layer CAN communication node as the external communication interface of this described CAN communicator network.Therefore, needs according to different scales power grade or electric pressure application, described trunking traffic layer can comprise more than two-layer trunking traffic node level, thereby need between described trunking traffic layer top layer trunking traffic node 30 and described trunking traffic layer bottom trunking traffic node 20, insert one or more layers upper strata trunking traffic layer, be used for the described trunking traffic layer of bridge joint top layer trunking traffic node 30 and described trunking traffic layer bottom trunking traffic node 20, and expand power grade or the electric pressure of described photovoltaic lithium electricity energy-storage system.This described trunking traffic layer upper strata trunking traffic node is compared with described trunking traffic layer top layer trunking traffic node 30, has the light-coupled isolation receiving element; Compare with described trunking traffic layer bottom trunking traffic node 20 and not have described irradiance testing circuit 27.The present embodiment only carries out structure explanation as execution mode to the electric energy storage module of described lack of balance management photovoltaic lithium node networking communication and control system with the trunking traffic layer of double-layer structure.
The central monitoring unit 50 of described central communication and key-course comprises a CSRC module 52, an ethernet communication module 54 and an order transmission/data receiver ethernet interface 501.Order reception/data transmission the ethernet interface 401 of described CAN/ Ethernet protocol converting unit 40 is electrically connected with the ethernet communication module 54 of described central monitoring unit 50 by the order transmission/data receiver ethernet interface 501 of described central monitoring unit 50.Described order transmission/data receiver ethernet interface 501 is used for receiving from the up aggregation process data message of described CAN/ Ethernet protocol converting unit 40 and transmitting system down order message etc.
For the electric energy storage module of described lack of balance management photovoltaic lithium node networking communication and control system, during its initialization, but in the described CAN network topology except trunking traffic layer top layer trunking traffic node 30 prewired being set to the reiving/transmitting state, the CAN communication unit of the lack of balance of all the other described trunking traffic layer bottom trunking traffic nodes 20 and described module communication and control layer management photovoltaic lithium electricity energy storage module node 10 all is in can not reiving/transmitting state, the triggering of wait node layoutprocedure.Send initialization command ethernet communication message by described ethernet communication module 54 through described order transmission/data receiver ethernet interface 501 by described central monitoring unit 50, this message is sent ethernet interface 401 by the CAN/ Ethernet protocol modular converter 42 of described CAN/ Ethernet protocol converting unit 40 through described order reception/data and receives and be converted to CAN form communication message, and by described order transmission/data receiver CAN bus communication interface CANH end 402, one order transmission/data receiver CAN bus communication interface CANL end 403 sends, order reception/data by described trunking traffic layer top layer trunking traffic node 30 send CAN Transmit-Receive Unit 34 through described order reception/data transmission CAN bus communication interface CANH end 301 and 302 receptions of order reception/data transmission CAN bus communication interface CANL end, begin since then the intelligent networking process of described CAN communication network.At this moment, at first triggered the light-coupled isolation receiving element 24 of the described trunking traffic layer bottom trunking traffic node 20 that is electrically connected with it through the signal input part 203 of the light-coupled isolation receiving element of described trunking traffic layer bottom trunking traffic node 20 by the first passage 305 of described multichannel allocation units 38 by the communication and control unit 32 of described trunking traffic layer top layer trunking traffic node 30, the communication and control unit 22 that further triggers described trunking traffic layer bottom trunking traffic node 20 enters the node communication configuration status, but and make the order reception/data transmission CAN Transmit-Receive Unit 23 of this described trunking traffic layer bottom trunking traffic node 20 enter reiving/transmitting state, send the handshake data message and enter subsequently the command message accepting state, notify the described trunking traffic layer top layer trunking traffic node 30 can sending node configuration order message, this moment by the communication and control unit 32 of described trunking traffic layer top layer trunking traffic node 30 with the node configuration message by described order sends/data receiver CAN Transmit-Receive Unit 36 through described order transmissions/data receiver CAN bus communication interface CANH end 303 and order transmissions/data receiver CAN bus communication interface CANL end 304 by the order receptions/data of described trunking traffic layer bottom trunking traffic node 20 send CAN Transmit-Receive Unit 23 through described order receptions/data send CAN bus communication interface CANH hold 201 with order reception/data transmission CAN bus communication interface CANL to hold 202 receptions, carry out the node communication configuration of described trunking traffic layer bottom trunking traffic node 20, comprise node serial number, the information such as node frame ID, making up orderly CAN communicator network, but simultaneously the order transmission/data receiver CAN Transmit-Receive Unit 25 of described trunking traffic layer bottom trunking traffic node 20 is configured to reiving/transmitting state.Subsequently, initiated the lack of balance of described module communication and control layer is managed the node layoutprocedure of photovoltaic lithium electricity energy storage module node 10 by described trunking traffic layer bottom trunking traffic node 20, this process is identical with the node communication layoutprocedure of 30 pairs of described trunking traffic layer bottom trunking traffic nodes 20 of described trunking traffic layer top layer trunking traffic node.Meanwhile, described trunking traffic layer top layer trunking traffic node 30 can continue to trigger and finish the with it node layoutprocedure of the trunking traffic layer bottom trunking traffic node 20 of multichannel allocation units further channel electrical connection, incremental, and described trunking traffic layer bottom trunking traffic node 20 also can continue to initiate the lack of balance of described module communication and control layer is managed the node layoutprocedure of photovoltaic lithium electricity energy storage module node 10, the relatively independent node of each level is configured to trigger rear overtime acceptance and is end from the handshake message of its cascaded communication node, the orderly networking of finally finishing the affiliated CAN communication network of described whole lack of balance management photovoltaic lithium electricity energy storage module node networking communication and control system makes up, because it is 65 and the structure of many CAN of multilayer subnet structure that the CAN communication section of each CAN communicator network is counted, thereby described CAN communication network can be realized relative plurality of subnets network parallel deployment, thereby the expansion with the node scale consuming time of described initialization procedure there is no significant increase, can not affect the normal operation of system.
After the orderly networking structure of CAN communication network under the electric energy storage module of the described lack of balance management photovoltaic lithium node networking communication and control system is finished, order transmission/data receiver CAN the Transmit-Receive Unit 36 of the trunking traffic node of described trunking traffic layer, 25 will all give tacit consent to and be in data receiving state, the data message uplink process of initiating with the lack of balance management photovoltaic lithium electricity energy storage module node 10 that carries out follow-up orderly module communication and control layer; If need descending transmitting system control message midway, described CAN Transmit-Receive Unit 36 then, 25 can switch reiving/transmitting state at any time, finish the process that issues of command message, this switching is equally applicable to described trunking traffic layer bottom trunking traffic node 20 is controlled the lack of balance management photovoltaic lithium electricity energy storage module node 10 of described module communication and control layer according to the descending transmission of monitoring information needs of irradiance testing circuit 27 the situation of operating state of power control circuit unit 17.Therefore, by described module communication and control layer, trunking traffic layer and central communication and key-course the end of from and on cooperatively interact, can realize the real-time processing in described group-net communication and control system of described uplink data messages and down order message information and in order transmission.
After the orderly networking structure of CAN communication network under the electric energy storage module of the described lack of balance management photovoltaic lithium node networking communication and control system is finished, described module communication and control node layer 10 is by the parameter acquisition to each lack of balance management photovoltaic lithium electricity energy storage module, carry out the prediction of module power supply capacity and the estimation of module equivalence state-of-charge, this module power supply capacity is taken into account the comprehensive power fan-out capability of photovoltaic cell unit described in the described lack of balance management photovoltaic lithium electricity energy storage module and described lithium ionic cell unit.
In actual application, described lithium ionic cell unit 14 and described energy management unit 16 can be arranged at a surface of described photovoltaic cell unit 12, this surface is relative with this light-struck surface of 12 acceptance, photovoltaic cell unit, thereby forms complete independent lack of balance management photovoltaic lithium electricity energy storage module 10 nodes.
See Figure 2-5, embodiments of the invention, there is provided a based on the module node group network communication, and control systems, non-equilibrium lithium energy storage system management PV 100 PV of the non-equilibrium lithium storage management the system 100 includes a plurality of mutually connected in series, unbalanced management of photovoltaic modules lithium storage node 10, and the establishment in which the plurality of mutually connected in series disequilibrium lithium storage management photovoltaic modules based on node 10 by the underlying communication layer relay communication relay node 20, and the bottom layer with the relay communication relay communication CAN communication node 20 belonging to the same subnet management of the non-equilibrium lithium storage of photovoltaic modules constitute the unbalanced node 10 Solar lithium storage management unit 60.Particularly, the first output 101 in this each lack of balance management photovoltaic lithium electricity energy storage module node 10 is electrically connected with the second output 102 of another lack of balance management photovoltaic lithium electricity energy storage module node 10, and the first output 101 of another lack of balance management photovoltaic lithium electricity energy storage module node 10 of the second output 102 and other is electrically connected, thereby realize the mutual series connection of a plurality of lack of balance management photovoltaic lithium electricity energy storage module nodes 10, the external CAN communication interface of this described lack of balance management photovoltaic lithium electrical energy storage unit 60 is that the order reception/data of described trunking traffic layer bottom trunking traffic node 20 send CAN communication interface 23.The output voltage of this described lack of balance management photovoltaic lithium electrical energy storage unit 60 is the output voltage sum of described a plurality of lack of balance management photovoltaic lithium electricity energy storage module nodes 10, and the output voltage of described lack of balance management photovoltaic lithium electricity energy-storage system 100 is the output voltage sum of described a plurality of lack of balance management photovoltaic lithium electrical energy storage units 60.Module node networking communication and control system by the described lack of balance management photovoltaic lithium electricity energy-storage system 100 of described trunking traffic layer top layer trunking traffic node 30, CAN/ Ethernet protocol converting unit 40 and central monitoring unit 50 completes of these described a plurality of lacks of balance management photovoltaic lithium electrical energy storage units 60 and up connection thereof.For this each lack of balance management photovoltaic lithium electrical energy storage unit 60, advise that the number of the described lack of balance management photovoltaic lithium electricity energy storage module node 10 that it comprises is 64.
In actual application, the a plurality of described lack of balance management photovoltaic lithium electricity energy storage module node 10 that described lack of balance management photovoltaic lithium electrical energy storage unit 60 can be comprised is spliced into an integral body, and the first output 62 of the described lack of balance management of described trunking traffic layer bottom communication node 20 and this photovoltaic lithium electrical energy storage unit 60 and the second output 64 be arranged in the framework 66 with the described lithium ionic cell unit 14 same surfaces of a plurality of described lacks of balance management photovoltaic lithiums electricity energy storage module nodes 10, this surface is relative with the light-struck surface of 12 acceptance, photovoltaic cell unit of described lack of balance management photovoltaic lithium electricity energy storage module node 10, thereby forms a complete lack of balance management photovoltaic lithium electrical energy storage unit 60.
Further, for the output voltage that makes described lack of balance management photovoltaic lithium electricity energy-storage system 100 can satisfy actual needs, a plurality of lack of balance management photovoltaic lithium electrical energy storage units 60 in the described lack of balance management photovoltaic lithium electricity energy-storage system 100 can be electrically connected with a converter 70, this converter 70 can be DC-DC converter or DC-AC inverse converter.Can make the output voltage of described lack of balance management photovoltaic lithium electricity energy-storage system 100 be converted to direct voltage or the alternating voltage of practical application by this converter 70.Simultaneously, when the lithium ionic cell unit 14 in a plurality of lack of balance management photovoltaic lithium electricity energy storage modules 10 of the one or more lack of balance management photovoltaic lithium electrical energy storage units 60 in the described lack of balance management photovoltaic lithium electricity energy-storage system 100 is ended output because of overdischarge, as long as the gross output of remaining a plurality of lack of balance management photovoltaic lithium electricity energy storage modules 10 can satisfy actual needs, the power output that the output power back off that this converter 70 just can be regulated himself is ended to cause because of the output of one or more lacks of balance management photovoltaic lithiums electricity energy storage modules 10 descends, meanwhile, module handover information data message effectively can be uploaded in real time by described module node networking communication system and be sent to central monitoring unit 50.
In addition, a plurality of lack of balance management photovoltaic lithium electrical energy storage units 60 of this whole lack of balance management photovoltaic lithium electricity energy-storage system 100 and converter 70 and described trunking traffic layer top layer trunking traffic node 30 and CAN/ Ethernet protocol converting unit 40 can further be arranged in the framework 80, wherein, this converter 70 comprises a converter positive input terminal 72, a converter negative input end 74, a converter the first output 76 and a converter the second output 78; This trunking traffic layer top layer trunking traffic node 30 comprises that a multichannel selected cell 38, order receptions/data send CAN and sum up interface CANH end 301, one order receptions/data and send CAN and sum up interface CANH end 302, one order transmissions/data receiver CAN and sum up interface CANH end 303, and order transmission/data receiver CAN summary interface CANH to hold 304; This CAN/ Ethernet protocol converting unit 40 comprises that order reception/data send ethernet interface 401, an order transmission/data receiver CAN bus communication interface CANH end 402, one order transmission/data receiver CAN bus communication interface CANL end 403.Its concrete connected mode is, for converter 70, this converter positive input terminal 72 is electrically connected with the first output 62 of lack of balance management photovoltaic lithium electrical energy storage unit 60, this converter negative input end 74 is electrically connected with the second output 64 of another lack of balance management photovoltaic lithium electrical energy storage unit 60, and the first output 76 of this converter is connected output 78 for being connected with external equipment with converter; For trunking traffic layer top layer trunking traffic node 30, its order reception/data send CAN and sum up interface CANH end 301 and order receptions/data and send CAN and sum up that interface CANH end 302 sends CAN bus communication interface CANH end 201 with the order receptions/data of the trunking traffic layer bottom trunking traffic node 20 of each lack of balance management photovoltaic lithium electrical energy storage unit 60 respectively and order reception/data transmission CAN bus communication interface CANL holds 202 to be electrically connected, and the multichannel allocation units 38 of this trunking traffic layer top layer trunking traffic node 30 are electrically connected with the light-coupled isolation receiving element 27 of trunking traffic layer bottom trunking traffic node 20 respectively; For CAN/ Ethernet protocol converting unit 40, its order transmissions/data receiver CAN bus communication interface CANH end 402 and order transmissions/data receiver CAN bus communication interface CANL end 403 send CAN bus communication interface CANH end 301 with the order receptions/data of described trunking traffic layer top layer trunking traffic node 30 respectively and order reception/data transmission CAN bus communication interface CANL to hold 302 to be electrically connected, order reception/data send ethernet interface 401 and are electrically connected with the outside ethernet interface 501 that can be used as the central monitoring unit 50 of stand-alone equipment, realize network struction and the communication of the module node networking communication and control system of described lack of balance management photovoltaic lithium electricity energy-storage system 100.
See also Fig. 6, second embodiment of the invention provides a kind of lack of balance management photovoltaic lithium electricity electric power system 200 based on described module node networking communication and control system, and it comprises a plurality of lacks of balance parallel with one another management photovoltaic lithiums electricity energy-storage systems 100.Be specially, converter the first output 76 in these a plurality of lack of balance management photovoltaic lithium electricity energy-storage systems 100 is electrically connected mutually, converter the second output 78 in these a plurality of lack of balance management photovoltaic lithium electricity energy-storage systems 100 is electrically connected mutually, thereby realizes the parallel with one another of these a plurality of lack of balance management photovoltaic lithium electricity energy-storage systems 100.This lack of balance management photovoltaic lithium electricity electric power system 200 can by these a plurality of lacks of balance parallel with one another management photovoltaic lithiums electricity energy-storage systems 100 to the outside simultaneously output voltages and power of a plurality of output equipments.The difference of the lack of balance management photovoltaic lithium electricity energy-storage system 100 a plurality of parallel with one another of this described lack of balance management photovoltaic lithium electricity electric power system 200 and the lack of balance management photovoltaic lithium electricity energy-storage system 100 in the first embodiment of the invention is, because the electric energy-storage systems 100 of lacks of balance should be a plurality of parallel with one another management photovoltaic lithium need to be included in the CAN communication network of same described module node networking communication and control system, therefore do not comprise described trunking traffic layer top layer trunking traffic node 30 and CAN/ Ethernet protocol converting unit 40 in the execution mode of these described a plurality of lacks of balance parallel with one another management photovoltaic lithium electricity energy-storage systems 100, but this trunking traffic layer top layer trunking traffic node 30 and CAN/ Ethernet protocol converting unit 40 are placed independently lack of balance management photovoltaic lithium electricity electric power system bus interface and conversion unit of protocol framework 90, as correspondence with foreign country and the control interface of described lack of balance management photovoltaic lithium electricity electric power system 200, to consist of the extendible lack of balance management of power grade photovoltaic lithium electricity electric power system.
A kind of lack of balance management photovoltaic lithium electricity electric power system 200 based on described module node networking communication and control system provided by the invention, on the basis of each node 10 power supply capacities prediction of described module communication and control layer and the estimation of equivalent state-of-charge, by information interaction and the Distributed Calculation of described control and communication network, carried out the predicting and evaluating of equivalent power supply capacity of described lack of balance management photovoltaic lithium electricity electric power system 200 and the estimation of system's equivalence state-of-charge by the above-mentioned effective information of described central monitoring unit 50 comprehensive utilizations.
Lack of balance management photovoltaic lithium electricity energy storage module node communication provided by the invention and control system and the lack of balance that makes up are on its basis managed photovoltaic lithium electrical energy storage unit and lack of balance management photovoltaic lithium electricity energy-storage system and lack of balance management photovoltaic lithium electricity electric power system and had the following advantages: described lack of balance is managed photovoltaic lithium electricity energy storage module node networking communication and control system and is realized that in power stage photovoltaic cell unit and lithium ionic cell unit energy management are on the basis of multimode group lack of balance management, stratification CAN bus network by the top-down electrical isolation that connected by Ethernet, be aided with reliable CAN bus and ethernet communication protocol, the intellectuality that can effectively realize orderly system communication and control network makes up, and system information in network in real time, reliable communication; Simultaneously, orderly communication and control network can be realized reliable node locating, can realize effective identification of isolated node quick location of malfunctioning node particularly, in conjunction with up nodal information, can intelligentized identification fault type and take appropriate measures, and can effectively carry out the power supply capacity prediction of whole system and the estimation of state-of-charge, in conjunction with the advantage of existing lack of balance management photovoltaic lithium electricity energy-storage system in the lithium ion battery management, further improve reliability and the intelligent level of whole system; In addition, lack of balance management photovoltaic lithium electricity energy storage module node communication provided by the invention and control system are by the CAN communication network of tree network structure construction, itself connect by a plurality of CAN communicator networks and form, thereby in the system initialization process, its time consumes can't significantly be increased with the expansion of node scale, and under many trunking traffics node of trunking traffic layer participates in, calculating and the information handling task of system rationally can be shared, the information processing efficiency of raising system and the real-time of dynamic response, the function of the described lack of balance management of more intelligentized realization photovoltaic lithium electricity energy storage module node communication and control system.The lack of balance management photovoltaic lithium electrical energy storage unit that makes up on this basis and lack of balance management photovoltaic lithium electricity energy-storage system and lack of balance management photovoltaic lithium electricity electric power system, can make output voltage convert the needed voltage of practical application to by described DC-DC converter or direct-current-alternating-current converter, and cross because of lithium ionic cell unit when one or more lack of balance management photovoltaic lithium electricity energy storage module and to put when cutting out, other lack of balance management photovoltaic lithium electricity energy storage modules still can normally be exported and can regulate the output voltage of whole lack of balance management photovoltaic lithium electricity energy-storage system and electric power system to the voltage of actual needs by this DC-DC converter or direct-current-alternating-current converter, and state information effectively fed back to central monitoring system in real time by described module node networking communication and control system, on the basis that takes full advantage of each lack of balance management photovoltaic lithium electricity energy storage module, improve real-time and the reliability of system; Under the cooperation of described module node networking communication and control system, by selecting the number of lack of balance management photovoltaic lithium electricity energy storage module, can regulate the total voltage of described lack of balance management photovoltaic lithium electricity energy-storage system, thereby satisfy the equipment with different voltage input demands, the flexibility that improves system power supply.
In addition, those skilled in the art also can do other and change in spirit of the present invention, and the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (6)
1. a lack of balance is managed photovoltaic lithium electricity energy storage module node networking communication and control system, it is characterized in that this a bottom-up module communication and control layer, a trunking traffic layer and a central communication and key-course of comprising of described lack of balance management photovoltaic lithium electricity energy storage module node networking communication and control system; Wherein,
This module communication and control layer further comprises one or more parallel based on CAN photovoltaic lithium electricity communication and that the interface of externally transmitting electricity is connected mutually energy storage module node, is used for realizing the energy management of described photovoltaic lithium electricity energy storage module, the external correspondence with foreign country of transmission of electricity and module;
This trunking traffic layer further comprises one or more trunking traffic nodes based on CAN communication with tree-like connection, is used for node expansion and interlayer information processing and the forwarding of this group-net communication and control system;
This central communication and key-course comprise that further a CAN/ Ethernet protocol converting unit and contains the central monitoring unit of Ethernet interface, are used for and control command message downlink transmission function up by realization data message between the node of trunking traffic layer and module communication and control layer.
2. lack of balance as claimed in claim 1 is managed photovoltaic lithium electricity energy storage module node networking communication and control system, it is characterized in that, the lack of balance management photovoltaic lithium electricity energy storage module node of described module communication and control layer is when finishing the node configuration according to the down order message that receives, collection and the uplink data messages of carrying out node diagnostic information send, and the lack of balance management photovoltaic lithium electricity energy storage module node of described module communication and control layer comprises:
One is used for the descendant node configuration order message of receiving system down order message, upper strata trunking traffic node and sends the order receptions/data transmission CAN Transmit-Receive Unit of module node diagnostic data message;
One is used for receiving the light-coupled isolation receiving element of descendant node configure trigger pulse;
One is used for described lack of balance is managed the photovoltaic cell unit of photovoltaic lithium electricity energy storage module node and the power control circuit unit that lithium ionic cell unit carries out energy management;
One for the communication and control unit of finishing described lack of balance management photovoltaic lithium electricity energy storage module power injection control circuit unit working state control, node configuration and nodal information collection, down order and configuration message parsing and uplink data messages preparation.
3. lack of balance as claimed in claim 1 is managed photovoltaic lithium electricity energy storage module node networking communication and control system, it is characterized in that, the trunking traffic node of described trunking traffic layer bottom is for the uplink data messages of the lack of balance management photovoltaic lithium electricity energy storage module node of the module communication and control layer that gathers its cascade, carrying out data processing and uplink data messages sends, and converting downlink command message and participate in the group-net communication configuration of the lack of balance management photovoltaic lithium electricity energy storage module node of module communication and control layer, the trunking traffic joint of described trunking traffic layer bottom comprises:
One is used for receiving system down order message and sends the order receptions/data transmission CAN Transmit-Receive Unit of the up aggregation process data message of lack of balance management photovoltaic lithium electricity energy storage module node of module communication and control layer;
One is used for receiving the bottom up Information Monitoring message of module node and sending the system descending command message and the descending CAN Transmit-Receive Unit of descendant node configuration order message;
One is used for the light-coupled isolation receiving element of receiving node configure trigger pulse;
One is used for triggering the multichannel allocation units of node configuration order;
One for detection of with the trunking traffic node of this described trunking traffic layer bottom under the irradiance testing circuit of lack of balance management photovoltaic lithium electricity energy storage module node irradiance information of same communication and control sub-network;
One for finishing the communication and control unit that down order packet parsing and uplink data messages are prepared and send downlink power control circuit unit control command message according to the irradiance detection signal.
4. lack of balance as claimed in claim 1 is managed photovoltaic lithium electricity energy storage module node networking communication and control system, it is characterized in that, the top layer trunking traffic node of described trunking traffic layer is used for gathering the upstream data information of its cascade trunking traffic node, and carry out that data are processed and the uplink data messages transmission, and repeater system down order and downstream arrangements order etc., it comprises:
One is used for receiving system down order message and sends the order receptions/data transmission CAN Transmit-Receive Unit of the up aggregation process data message of cascade trunking traffic node;
One is used for receiving the cascade up combined data message of trunking traffic node and sending the system descending command message and the order transmission/data receiver CAN Transmit-Receive Unit of descendant node configuration message;
One is used for triggering the multichannel allocation units of node configuration order;
One is used for finishing the communication and control unit of down order packet parsing and uplink data messages preparation.
5. lack of balance as claimed in claim 1 is managed photovoltaic lithium electricity energy storage module node networking communication and control system, it is characterized in that, by described module communication and control layer, the tree network structure of trunking traffic layer and central communication and key-course, realize group-net communication and the control of the energy storage module node of described lack of balance management photovoltaic lithium electricity energy-storage system, its major function is, for initialization procedure, send the down initial configuration-direct by central communication and key-course, by trunking traffic layer and the module communication and control layer CAN bus network by electrical isolation and described multichannel allocation units and a plurality of port with its one to one the light-coupled isolation receiving element cooperate, carry out top-down network node automation and configure and expand; For data transmission procedure, the communications of efficient, orderly upstream data and down order message is carried out on basis in described node automation configuration and expansion, thereby reaches the real-time control management that lack of balance management photovoltaic lithium electricity energy-storage system respectively forms the module node.
6. lack of balance is managed photovoltaic lithium electricity energy storage module node networking communication and control system as claimed in claim 1, it is characterized in that, by described module communication and control layer, the tree network structure of trunking traffic layer and central communication and key-course, be estimated as the basis with the prediction of described lack of balance management photovoltaic lithium electricity energy storage module power supply capacity with equivalent state-of-charge, mutual and the Distributed Calculation by the stratification nodal information, the bulk supply ability prediction that finally obtains described lack of balance management photovoltaic lithium electricity energy-storage system is estimated with equivalent state-of-charge, improves the power supply reliability of described lack of balance management photovoltaic lithium electricity energy-storage system.
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Effective date of registration: 20200113 Address after: 610000 No. 2, 1 unit, 5 layer 501-504, No. 801, middle section of Tianfu Road, Chengdu high tech Zone, Sichuan Patentee after: CHENGDU GUOJIA ELECTRICAL ENGINEERING CO., LTD. Address before: 610031 Sichuan City, Chengdu Province, No. two North Ring Road, No. 111 Patentee before: Southwest Jiaotong University |