CN208078663U - Distributed home energy-storage system - Google Patents
Distributed home energy-storage system Download PDFInfo
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- CN208078663U CN208078663U CN201820520373.5U CN201820520373U CN208078663U CN 208078663 U CN208078663 U CN 208078663U CN 201820520373 U CN201820520373 U CN 201820520373U CN 208078663 U CN208078663 U CN 208078663U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 87
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- 238000013461 design Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 79
- 230000007246 mechanism Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
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Abstract
The utility model is related to solar energy generation technology fields,More particularly to a kind of distributed home energy-storage system,Its device of solar generating includes solar panel and MPPT trackers,Solar panel passes through MPPT trackers,Battery system is connected with two-way DC/AC converters respectively by two-way DC/DC converters,Two-way DC/AC converters are connected with parallel network circuit,Parallel network circuit is connected with public electric wire net,Node connected load circuit between two-way DC/AC converters and parallel network circuit,Load circuit is connected with user load,Battery system includes battery modules and battery management system BMS,Battery management system BMS corresponds the running state information being connected for acquiring corresponding battery modules with battery modules,Battery management system BMS is connected with energy storage inverter PCS,Energy storage inverter PCS includes two-way DC/AC converters,The charge/discharge switching of energy storage inverter PCS control battery systems；The design and adjustment of the utility model are more flexible, and protection more comprehensively, keeps user power utilization safer.
Description
Technical field
The utility model is related to solar energy generation technology fields, and in particular to a kind of distributed home energy-storage system.
Background technology
Enhance with the environmental protection consciousness of society, clean energy resource is widely recognized as and is received, while national policy is given
It gives new energy industry to support energetically, the roof or wall of more and more families and small business users in house or office space
Outer surface increases photovoltaic panel or film curtain wall, forms a set of distributed household photovoltaic system, energy storage is added within the system
Battery forms a set of distributed home storage system.
But existing system plasticity is single, cannot be directed to the different photovoltaic installed capacitys of user, different power demand into
Row adaptability matches, and is unable to reach the optimal selection of user in function and economically.Moreover, existing system exist do not have be
Blanket insurance protective function or the incomplete problem of defencive function influence the normal table work of system, are also unfavorable for extension system
Service life.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of distributed home energy-storage system,
Battery system uses module design, can be adjusted according to the output power and user power utilization demand of the device of solar generating of user
The battery modules quantity of battery system.
To achieve the above object, the utility model uses following technical solution：
A kind of distributed home energy-storage system comprising battery system 1, two-way DC/DC converters 2, solar power generation dress
It sets, two-way DC/AC converters 5, parallel network circuit 6 and load circuit 7, device of solar generating include at least one set of solar cell
Plate 3 and at least one MPPT trackers 4 being connected with solar panel 3, every group of solar panel 3 pass through one
MPPT trackers 4, battery system 1 are connected with two-way DC/AC converters 5 respectively by two-way DC/DC converters 2, two-way DC/AC
Converter 5 is connected with parallel network circuit 6, and parallel network circuit 6 is connected with public electric wire net, in two-way DC/AC converters 5 and parallel network circuit 6
Between node connected load circuit 7, load circuit 7 is connected with user load, and battery system 1 includes at least one set of battery modules
It is connected for acquiring corresponding electricity with battery modules one-to-one correspondence at least one battery management system BMS, battery management system BMS
The running state information of pond module, battery management system BMS are connected with energy storage inverter PCS, and energy storage inverter PCS includes two-way
DC/AC converters 5, the charge/discharge switching of energy storage inverter PCS control battery systems 1.
Preferably, the battery system 1 includes multigroup battery modules and is correspondingly connected with respectively with multigroup battery modules
Multiple battery management system BMS, multiple battery management system BMS are connected with an energy storage inverter PCS.
Preferably, further include energy management system EMS, battery management system BMS passes through energy management system EMS and energy storage
Inverter PCS is connected.
Preferably, the battery system 1 include cabinet 100, cabinet 100 be arranged high-voltaghe compartment 9 and it is multiple be used for placing battery
The battery case 8 of module and the battery management system BMS being connected with battery modules, battery modules are by multiple single battery series connection groups
At battery modules include module anode and module cathode, and high-voltaghe compartment 9 includes relay and fuse, and module anode passes through relay
Device is connected with positive electrode bus, and module cathode is connected by fuse with negative electrode bus.
Preferably, the battery management system BMS includes that the temperature of the running state information for acquiring battery system passes
Sensor, current sensor and voltage sensor.
Preferably, the number of the temperature sensor is 1-6, is distributed in inside the battery case 8 of battery system 1.
Preferably, the energy storage inverter PCS is connected by RS485 communication interfaces with battery management system BMS, cell tube
Reason system BMS is connected with the relay of high-voltaghe compartment 9, controls closure/disconnection of relay.
Preferably, the battery system 1 further includes being arranged on 100 top of cabinet of battery system 1 and battery management system
The display 10 that the BMS that unites is connected, display 10 are touch screen displays, and user can pass through display 10 and battery management system is arranged
The preset parameter value of BMS；The display 10 is connected by CAN bus with battery management system BMS, and battery system 1 passes through DC/
DC converters are connected with display 10, and working power is provided for it.
Preferably, the battery management system BMS is filled by control interface and the temperature control for controlling 1 temperature of battery system
Set connected, temperature control device includes radiator fan and heating mechanism.
Preferably, the parallel network circuit 6 includes grid-connected switch SA2 and is connected with grid-connected switch SA2 for detecting electric current
The current sensing means of flow direction, grid-connected switch SA2 and current sensing means are connected with energy storage inverter PCS respectively；
The load circuit 7 include on-load switch SA3 and with the concatenated electric energy meters of on-load switch SA3, on-load switch SA3
It is connected with energy storage inverter PCS.
The distributed home energy-storage system of the utility model, including battery system, battery system include at least one set of battery
Module and at least one battery management system BMS, the installed capacity and use that the quantity of battery modules can be according to solar panel
The electricity demand at family determines that battery management system BMS is corresponded with battery modules constitutes an independent modular unit, electricity
The modularized design of cell system keeps the adjustment of its battery capacity and input/output power more convenient, can be according to the sun of user
The output power and user power utilization demand of energy power generator are adjusted.Further, the two-way DC/AC converters and grid-connected electricity
Road is connected, and connected load circuit between two-way DC/AC converters and parallel network circuit, parallel network circuit is connected with public electric wire net, load
Circuit is connected with user load, and energy storage inverter PCS includes two-way DC/AC converters, battery management system BMS and battery system
Battery modules be connected acquisition battery system running state information, energy storage inverter PCS can be according to the operation shape of battery system
State information, and user power utilization demand is combined, the charge/discharge switching of battery system is controlled, the distributed family of the utility model is made
Front yard energy-storage system has the advantages that provide multiple forms of energy to complement each other, peak load shifting, electricity feedback, and using battery system as the standby electricity of user
Source realizes user load power supply free of discontinuities, ensures the stable operation of user load；The battery management system BMS can be according to electricity
The running state information of cell system in time the problem of discovery battery system, and is quickly disposed with high-voltaghe compartment cooperation, ensures this
The distributed home energy-storage system stable operation of utility model.In addition, the battery management system BMS include temperature sensor,
Current sensor and voltage sensor can detect the temperature of battery system, the charge/discharge current of single battery, monomer electricity in real time
The charge/discharge current etc. of cell voltage, battery modules voltage, battery modules, and the remaining capacity of single battery can be calculated in real time
SOC, the problem of can finding battery modules and/or single battery in time, are conducive to user's maintenance in time and safeguard, extend this practicality
The service life of novel distributed energy storage system；The battery management system BMS is connected by control interface with temperature control device,
So that battery modules is worked in certain temperature range, is conducive to extend the service life of battery modules；The display and battery
Management system BMS is connected, and can show over the display the running state information of battery system, user is facilitated to check battery in time
The running state information of system, discovers and rules out problem in time, is conducive to the service life for improving battery system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model distributed home energy-storage system；
Fig. 2 is the structural schematic diagram of the utility model battery system；
Fig. 3 is the circuit diagram of the utility model distributed home energy-storage system.
Specific implementation mode
Below in conjunction with the embodiment that attached drawing 1 to 3 provides, the distributed home energy-storage system of the utility model is further illustrated
Specific implementation mode.The distributed home energy-storage system of the utility model is not limited to the following description.
The distributed home energy-storage system of the utility model includes battery system 1, two-way DC/DC converters 2, solar energy hair
Electric installation, two-way DC/AC converters 5, parallel network circuit 6 and load circuit 7, device of solar generating include at least one set of solar energy
Solar panel 3 and at least one MPPT trackers 4 being connected with solar panel 3, every group of solar panel 3 pass through one
A MPPT trackers 4, battery system 1 are connected with two-way DC/AC converters 5 respectively by two-way DC/DC converters 2, two-way DC/
AC converters 5 are connected with parallel network circuit 6, and parallel network circuit 6 is connected with public electric wire net, in two-way DC/AC converters 5 and parallel network circuit
Node connected load circuit 7 between 6, load circuit 7 is connected with user load, and battery system 1 includes at least one set of battery mould
Group and at least one battery management system BMS (battery management system), battery management system BMS correspond phase with battery modules
It is used in conjunction in the running state information of acquisition battery system 1, battery management system BMS and energy storage inverter PCS (energy accumulation current converter)
It is connected, energy storage inverter PCS includes two-way DC/AC converters 5, the charge/discharge of energy storage inverter PCS control battery systems 1；
The input power of the battery system 1 is matched with the output power of solar panel 3, output power, the electric energy of battery system 1
Energy storage total amount is matched with the electrical energy demands of the power of user load, user load respectively.
The distributed home energy-storage system of the utility model includes battery system, and battery system includes at least one set of battery mould
Group and at least one battery management system BMS (battery management system), the quantity of battery modules can be according to solar panel
Installed capacity and the power demand of user determine that battery management system BMS and battery modules, which correspond, constitutes an independence
Modular unit, the modularized design of battery system keeps the adjustment of its battery capacity more convenient；The two-way DC/AC transformation
Device is connected with parallel network circuit, connected load circuit, parallel network circuit and public electric wire net between two-way DC/AC converters and parallel network circuit
It is connected, load circuit is connected with user load, and energy storage inverter PCS includes two-way DC/AC converters, battery management system BMS
It is connected with the battery modules of battery system and acquires the running state information of battery system, energy storage inverter PCS can be according to battery system
The running state information of system, and user power utilization demand is combined, it realizes the charge/discharge switching of battery system, makes the utility model
Distributed home energy-storage system have the advantages that provide multiple forms of energy to complement each other, peak load shifting, electricity feedback, and using battery system as user
The stand-by power supply of load realizes user load power supply free of discontinuities；The battery management system BMS can be according to the operation of battery system
Status information in time the problem of discovery battery system, and is quickly disposed with high-voltaghe compartment cooperation, ensures point of the utility model
The energy-storage system stable operation of cloth family.
The distributed home energy-storage system of the utility model is made furtherly below with reference to the drawings and specific embodiments
It is bright.
As shown in Figs. 1-3, the distributed home energy-storage system of the utility model comprising device of solar generating, one
5, parallel network circuits 6 of the two-way DC/AC converters of 2, one, the two-way DC/DC converters of battery system 1, one and a load electricity
Road 7, device of solar generating include two groups of solar panels 3 and be connected respectively with two solar panels 3 two
MPPT trackers 4, solar panel 3 are connected by MPPT trackers 4 with two-way DC/AC converters 5, and battery system 1 passes through
Two-way DC/DC converters 2 are connected with two-way DC/AC converters 5, and two-way DC/AC converters 5 are connected with parallel network circuit 6, two-way
Connected load circuit 7 between DC/AC converters 5 and parallel network circuit 6, parallel network circuit 6 are connected with public electric wire net, load circuit 7 with
User load is connected, and battery system 1 includes three groups of battery modules and three battery managements being connected respectively with three groups of battery modules
System BMS battery management systems, three battery management system BMS battery management systems are respectively used to detect corresponding battery modules
Running state information, an energy storage inverter PCS be connected with three battery management system BMS obtain battery system 1 operation
Status information, energy storage inverter PCS include two-way DC/AC converters 5 and microprocessor, and energy storage inverter PCS controls battery
The charge/discharge of system 1.
Preferably, the distributed home energy-storage system of the utility model further includes energy management system EMS (electric energy management systems
System), battery management system BMS is connected by energy management system EMS with energy storage inverter PCS, and energy management system EMS is obtained
The running state information of the battery system 1 of battery management system BMS acquisitions, and judge the state of the battery system 1 of battery system 1
And energy storage inverter PCS is transmitted information to, energy storage inverter PCS controls filling for battery system 1 according to the state of battery system 1
Electricity/electric discharge.Preferably, the model of the battery management system BMS：ESBMM-1613R, the model of energy storage inverter PCS
SolDate3700TL。
The running state information of the battery system 1 includes monomer battery voltage, single battery charge/discharge current, electricity
Pond module voltage, battery modules charge/discharge current, cell system voltage, battery system charge/discharge current, battery system
Temperature, the remaining capacity SOC of battery system, the accumulator capacity SOH of battery system and fault message etc..
It should be pointed out that the group number of the solar panel 3 can be adjusted according to user's electrical demand, battery mould
The number of group is determined according to the installation total amount and user power utilization demand of solar panel 3.
As shown in Fig. 2, the battery system 1 includes cabinet 100, cabinet 100 be arranged three for placing battery module and
Display is arranged in the battery case 8 for the battery management system BMS being connected with battery modules and a high-voltaghe compartment 9,100 top of cabinet
10。
It should be pointed out that three battery cases 8 can be parallel with one another, it can also be in parallel by two of which battery case 8,
Can also respective independent operating, so that the distributed home energy-storage system of the utility model is met wanting for different electrical demands
It asks.
As shown in Figures 2 and 3, the battery case 8 includes the one group of battery modules and and battery modules being provided at its inner portion
The battery management system BMS being used cooperatively, three battery modules are parallel with one another, and battery management system BMS is connect by RS485 communications
Mouth is connected with energy storage inverter PCS, and each battery modules are composed in series by multiple single batteries, battery management system BMS packets
Temperature sensor, current sensor and voltage sensor are included, the number of temperature sensor is 6, is evenly distributed in three batteries
For the inside of case 8 for detecting battery modules temperature, current sensor is used to detect the charge/discharge current, every of each single battery
The charge/discharge current of the charge/discharge current and battery system 1 of group battery modules, voltage sensor is for detecting each list
The voltage of body battery, every group of battery modules voltage and battery system 1 voltage, temperature sensor, current sensor and voltage
The tidal data recovering that sensor is detected is the running state information of battery system 1, and passes through RS485 by battery management system BMS
Communication interface is transferred to energy storage inverter PCS.
It should be pointed out that multiple battery management system BMS of the battery system are connected with each other and can carry out automatically
Slave identifies that one of battery management system BMS is communicated as host and energy storage inverter PCS, as host
Battery management system BMS acquires the running state information of coupled battery modules and summarizes remaining cell tube as slave
The corresponding battery modules information that reason system BMS is respectively acquired, and whole running state informations is analyzed, it can by principal and subordinate's identification
To reduce the cost of the present invention, and facility is provided for the use of user.
A simulation framework in multiple battery management system battery management system BMS is by connecting network to other batteries
Manage system battery management system BMS and send test signal, battery management system battery management system BMS be more than or more than etc.
Fail to receive the data that other battery management system battery management systems BMS is sent by connecting network in predetermined time-out time,
Battery management system battery management system BMS hosts are not present in then battery management system battery management system BMS judgements, then should
Battery management system battery management system BMS regards as host and is communicated with energy storage inverter energy storage inverter PCS automatically, other
Battery management system battery management system BMS regards as slave automatically.When battery system increases or decreases battery modules, repeat
The above process.
The sampling precision of the battery management system BMS is high, can more accurately detect the operating status letter of battery system 1
Breath.
Preferably, the voltage sample precision of the battery management system BMS of the utility model is ± (0.2%FS+0.2%
RD), current sample precision is ± (0.5%FS+0.5%RD).
It is over-pressed, deficient that the battery management system BMS can also judge whether battery system 1 occurs according to its parameter preset
The failures such as pressure, overcurrent (short circuit), and warning message is transferred to display 10 and is shown, facilitate user or maintenance personal timely
It checks, debugs.
The battery system includes multiple single batteries, is based on wooden barrel short -board effect, determines the remaining capacity of battery system
Often several single batteries as " short slab " of SOC, battery management system BMS foundations acquire in real time as " short slab "
The charge/discharge current of single battery, in conjunction with the voltage-current curve and temperature-current curve of single battery, using various modes
Segment processing method estimates the remaining capacity SOC of battery system；Meanwhile the battery management system BMS can be according to single battery
Discharge current and environment temperature the remaining capacity SOC of single battery is corrected, provide the electricity more met under varying loading
The remaining capacity SOC of cell system and the reliable useful life of battery system.
The battery management system BMS uses passive balancing technique, can simultaneously to multiple single batteries of battery modules into
Row equalization discharge improves battery consistency, extends battery.
As shown in figure 3, the display 10 is connected by CAN bus with battery management system BMS, battery system 1 passes through
DC/DC converters are that display 10 provides power supply.
Preferably, the display 10 is touch screen display screen, and battery management system BMS can be arranged by display 10 in user
Preset parameter value.
As shown in figure 3, the high-voltaghe compartment 9 includes relay and fuse, the battery modulus of battery system 1 include module just
Pole and module cathode, module anode are connected by relay with positive electrode bus, and module cathode passes through fuse and negative electrode bus phase
Even, battery management system BMS is connected with relay, controls closure/disconnection of relay.
When there is following one or more of failure in battery modules, for example, battery system 1 too high or too low for temperature, battery
Module is over-pressed or under-voltage, single battery is over-pressed or under-voltage, the charge/discharge of charge/discharge overcurrent, battery modules of single battery
Stream, battery system 1 is over-pressed or under-voltage, 1 charge/discharge overcurrent of battery system, short circuit, battery management system BMS can pass through relay
The battery modules to break down are cut off, can effectively protect battery modules improve electrical safety；When overcurrent occur in battery modules
When (short circuit), the fuse of high-voltaghe compartment 9, which can react rapidly, cuts off the battery modules, avoids that fire occurs.
Preferably, the battery management system BMS of the utility model is connected by control interface with temperature control device, temperature control device
Including radiator fan and heating mechanism, when the temperature of battery modules is more than its maximum operating temperature, radiator fan starts, favorably
In the rapid cooling of battery modules, when the temperature of battery modules is less than its minimum operating temperature, heating mechanism starts, to improve
The temperature of battery modules, radiator fan and heating mechanism are used cooperatively, and battery modules is made to be maintained in optimum working temperature section
Work, advantageously ensure that battery modules uses capacity, extends the service life of battery modules.
It should be pointed out that the radiator fan of the temperature control device is the distributed home energy-storage system of the utility model
Standard configuration, and the battery case 8 of each battery system 1 includes a radiator fan；And heating mechanism then makes according to user
It is configured with the environment property of can be chosen, such as the southern area in China, integrated environment temperature is higher, then need not configure heating
Mechanism, and in the northern area of China, since winter temperature is too low, then need to configure heating mechanism.
Preferably, multiple heat emission holes are arranged in the cabinet 100 of the battery system 1, are conducive to the work calories of battery system 1
It sheds in time.
As shown in Figure 1, the parallel network circuit 6 includes grid-connected switch SA2 and the current detecting for detecting current direction
Device, current sensing means are connected and communicate with energy storage inverter PCS, are set between two-way DC/AC converters 5 and parallel network circuit 6
Set the total lock SA1 of system.The load circuit 7 is connected between the total lock SA1 of system and parallel network circuit 6, and load circuit 7 includes load
Switch SA3 and with the concatenated electric energy meters of on-load switch SA3.The energy storage inverter PCS and the total lock SA1 of system, grid-connected switch
SA2, load switch SA3 are connected and communicate, and control closure/disconnection of three, and energy storage inverter PCS can control two-way DC/AC
The switching of the operating mode of converter 5, energy storage inverter PCS are connected with battery management system BMS, battery management system BMS with
The relay of high-voltaghe compartment 9 communicates and controls closure/disconnection of relay.
The distributed home energy-storage system of the utility model includes two kinds of operating modes, is the pattern of generating power for their own use respectively and fixed
When charge and discharge mode, the electric energy that device of solar generating generates is completely used for user load operation by pattern of generating power for their own use, fixed
When the electric energy savings that generate device of solar generating in the low power consumption phase of user of charge and discharge mode, that is, battery system get up,
The peak times of power consumption of user are powered using battery system 1 for user load, and the energy storage inverter PCS passes through the total lock of control system
The conversion of above two operating mode can be realized in the break-make of SA1, grid-connected switch SA2 and load switch SA3, specifically controls process
It is as follows：
It generates power for their own use pattern：The total lock SA1 of the energy storage inverter PCS control systems, grid-connected switch SA2 and on-load switch
SA3 is all closed, and when the power supply volume abundance of device of solar generating, PSC preferentially uses device of solar generating negative for user
Power supply is carried, if after sun power generator is user load power supply, electric energy is still had more than needed, then PSC is preferably battery system charging,
After battery system charges, electric energy more than needed is then incorporated to public electric wire net by PSC；When the power supply volume of device of solar generating is insufficient
When, PSC priority acccess controls device of solar generating and battery system are that user load is powered jointly；When device of solar generating and electricity
When the power supply volume deficiency of cell system, then PSC controls device of solar generating and battery system, negative for user together with public electric wire net
Carry power supply.
Timing charge and discharge mode：Under this pattern, the total lock SA1 of system, grid-connected switch SA2 and on-load switch SA3 are closed；When
When low power consumption phase in user, energy storage inverter PCS gives battery system charging, public electric wire net that may give energy storage inversion simultaneously
Device PCS and load supplying；When the peak times of power consumption in user, energy storage inverter PCS powers for user load, energy storage inversion
Device PCS detects current direction in real time by current sensing means, and when current direction public electric wire net, energy storage inverter PCS then drops
Low-power export, avoid electric energy flow into power grid, using extend battery system and device of solar generating as user load power when
Between.
Preferably, the total lock SA1 of the system, grid-connected switch SA2 and on-load switch SA3 are relay switch.
Preferably, the distributed home energy-storage system of the utility model further includes sound-light alarm mechanism, sound-light alarm mechanism
It is connected with energy storage inverter PCS.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the scope of protection of the utility model.
Claims (10)
1. a kind of distributed home energy-storage system, it is characterised in that：It include battery system (1), two-way DC/DC converters (2),
Device of solar generating, two-way DC/AC converters (5), parallel network circuit (6) and load circuit (7), device of solar generating include
At least one set of solar panel (3) and at least one MPPT trackers (4) being connected with solar panel (3), every group
Solar panel (3) passes through two-way DC/DC converters (2) difference by a MPPT tracker (4), battery system (1)
It is connected with two-way DC/AC converters (5), two-way DC/AC converters (5) are connected with parallel network circuit (6), parallel network circuit (6) and public affairs
Common-battery net is connected, the node connected load circuit (7) between two-way DC/AC converters (5) and parallel network circuit (6), load electricity
Road (7) is connected with user load, and battery system (1) includes at least one set of battery modules and at least one battery management system BMS,
Battery management system BMS corresponds the running state information being connected for acquiring corresponding battery modules, battery with battery modules
Management system BMS is connected with energy storage inverter PCS, and energy storage inverter PCS includes two-way DC/AC converters (5), energy storage inverter
PCS controls the charge/discharge switching of battery system (1).
2. distributed home energy-storage system according to claim 1, it is characterised in that：Further include energy management system EMS,
Battery management system BMS is connected by energy management system EMS with energy storage inverter PCS.
3. distributed home energy-storage system according to claim 1, it is characterised in that：The battery system (1) includes
Multigroup battery modules and the multiple battery management system BMS being correspondingly connected with respectively with multigroup battery modules, multiple battery management systems
System BMS is connected with an energy storage inverter PCS.
4. distributed home energy-storage system according to claim 1 or 2, it is characterised in that：The battery system (1) includes
Cabinet (100), cabinet (100) setting high-voltaghe compartment (9) and multiple batteries for being used for placing battery module and being connected with battery modules
The battery case (8) of management system BMS, battery modules are composed in series by multiple single batteries, battery modules include module anode and
Module cathode, high-voltaghe compartment (9) include relay and fuse, and module anode is connected by relay with positive electrode bus, and module is negative
Pole is connected by fuse with negative electrode bus.
5. distributed home energy-storage system according to claim 1 or 2, it is characterised in that：The battery management system BMS
Include temperature sensor, current sensor and the voltage sensor of the running state information for acquiring battery system.
6. distributed home energy-storage system according to claim 5, it is characterised in that：The number of the temperature sensor is
1-6, the battery case (8) for being distributed in battery system (1) is internal.
7. distributed home energy-storage system according to claim 1, it is characterised in that：The energy storage inverter PCS passes through
RS485 communication interfaces are connected with battery management system BMS, and battery management system BMS is connected with the relay of high-voltaghe compartment (9), control
Closure/disconnection of relay processed.
8. distributed home energy-storage system according to claim 1 or 2 or 3, it is characterised in that：The battery system (1)
Further include the display (10) that with battery management system BMS is connected of the setting on cabinet (100) top of battery system (1), shows
Show that device (10) is touch screen displays, the preset parameter value of battery management system BMS can be arranged in user by display (10)；It is described
Display (10) is connected by CAN bus with battery management system BMS, and battery system (1) passes through DC/DC converters and display
(10) it is connected, working power is provided for it.
9. distributed home energy-storage system according to claim 1 or 2, it is characterised in that：The battery management system BMS
It is connected with the temperature control device for controlling battery system (1) temperature by control interface, temperature control device includes radiator fan and adds
Heat engine structure.
10. distributed home energy-storage system according to claim 1 or 2, it is characterised in that：Parallel network circuit (6) packet
The current sensing means for including grid-connected switch SA2 and being connected with grid-connected switch SA2 for detecting current direction, grid-connected switch SA2
It is connected respectively with energy storage inverter PCS with current sensing means；
The load circuit (7) include on-load switch SA3 and with the concatenated electric energy meters of on-load switch SA3, on-load switch SA3 with
Energy storage inverter PCS is connected.
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| CN111525642A (en) * | 2020-04-27 | 2020-08-11 | 深圳市拓邦锂电池有限公司 | Low-voltage parallel battery management system and method |
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| CN113612243A (en) * | 2021-08-06 | 2021-11-05 | 江苏芯界新能源科技有限公司 | Energy storage control system |
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| WO2022028434A1 (en) * | 2020-08-04 | 2022-02-10 | 中国华能集团清洁能源技术研究院有限公司 | Multi-branch electrochemical energy storage system having battery cell diagnosis function |
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| CN111525642A (en) * | 2020-04-27 | 2020-08-11 | 深圳市拓邦锂电池有限公司 | Low-voltage parallel battery management system and method |
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