CN206807150U - A kind of expansible group string data large-scale energy storage system - Google Patents
A kind of expansible group string data large-scale energy storage system Download PDFInfo
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- CN206807150U CN206807150U CN201720519961.2U CN201720519961U CN206807150U CN 206807150 U CN206807150 U CN 206807150U CN 201720519961 U CN201720519961 U CN 201720519961U CN 206807150 U CN206807150 U CN 206807150U
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Abstract
The utility model discloses a kind of expansible group string data large-scale energy storage system, it is formed in parallel by multiple single cluster energy-storage systems, it is in series per cluster energy-storage system by 4 ~ 13 battery modules and a high-voltaghe compartment and inverter, power supply positive and negative terminal and high-voltaghe compartment the input positive and negative terminal of wherein 4 ~ 13 battery modules are sequentially connected in series to form loop, the output positive and negative terminal of the high-voltaghe compartment and the direct current positive and negative terminal of inverter connect, and pass through communication power supply bus connection communication port communication between each battery modules and high-voltaghe compartment, pass through 485 bus communications between high-voltaghe compartment and inverter, it is connected in parallel between the inverter of more cluster energy-storage systems by exchanging live wire with zero line realization is exchanged.
Description
Technical field
It the utility model is related to energy-storage system, more particularly to a kind of expansible group string data large-scale energy storage system.
Background technology
Extensive energy storage technology is intelligent grid, power scheduling, power network peak load shifting, the key technology of peak-frequency regulation.Lithium
Ion battery is because it has the advantages that energy density is high, self-discharge rate is low, discharging voltage balance, has extended cycle life in multiple necks
Domain is widely used, the inexorable trend that will develop in extensive power storage system using lithium battery as technology.Big rule
Mould energy-storage system needs thousands of lithium ion single battery cores to form system by connection in series-parallel, and any monomer breaks down all can be to whole
The operation of individual energy-storage system impacts, therefore how to ensure the safe, reliable, efficient operation of energy-storage system, is extensive
The key technology of energy-storage system.
Meanwhile existing energy-storage system is not independent work, needed when needing and improving capacity by system halt operation,
Again it is upper to design, and the access of subsystem can cause total voltage difference be present between a battery pack, damage high tension apparatus.
Utility model content
The defects of to overcome prior art, the utility model provide a kind of extensive energy storage system of expansible group string data
System, influence caused by single battery core failure is run on whole energy-storage system can be reduced, reduce the single event of the devices such as inverter
Barrier influences the operation of whole energy-storage system, and the safe and stable operation of whole energy-storage system is effectively ensured.
The utility model discloses a kind of expansible group string data large-scale energy storage system, by multiple single cluster energy-storage systems simultaneously
Connection forms, and is in series per cluster energy-storage system by 4 ~ 13 battery modules and a high-voltaghe compartment and inverter, wherein 4 ~ 13
Power supply positive and negative terminal and high-voltaghe compartment the input positive and negative terminal of individual battery modules are sequentially connected in series to form loop, and the output of the high-voltaghe compartment is just
The direct current positive and negative terminal of negative terminal and inverter connects, and is connected and led to by communication power supply bus between each battery modules and high-voltaghe compartment
Believe port communication, by 485 bus communications between high-voltaghe compartment and inverter, pass through exchange between the inverter of more cluster energy-storage systems
Live wire is connected in parallel with zero line realization is exchanged.
The battery modules have direct current positive-negative output end, 2 and 16 string single battery cores, plurality of voltages acquisition module, multichannel
Temperature collect module, main control singlechip, active equalization module, CAN and fuse, wherein 2 and 16 string single battery cores
Positive pole inline fuse is connected with direct current positive output end, and plurality of voltages acquisition module is adopted to the magnitude of voltage of each single battery core
Collection, and send to main control singlechip, multiplex temperature collection module and the temperature of each single battery core is carried out by temperature sensor
Collection, and send to main control singlechip, main control singlechip and the magnitude of voltage of each single battery core and temperature value are passed through into CAN communication mould
Block is sent to high-voltaghe compartment, while receives the control signal that high-voltaghe compartment is sent, and main control singlechip is adjusted according to the control signal of reception
Section active equalization module is boosted by each single battery core or decompression processing.
The high-voltaghe compartment has a direct current positive-negative input end, direct current positive-negative output end, breaker of plastic casing, AC breakers, it is main after
Electrical equipment, preliminary filling relay, preliminary filling resistance, ac/dc power supply module, master control management module and energy management module, wherein moulding
Case circuit breaker is connected between direct-flow input end and DC output end, preliminary filling relay and precharge group series connection after with main relay
Parallel connection, then it is connected on again between direct-flow input end and DC output end, the direct-flow input end connection of ac/dc power supply module
Direct current positive-negative input end, output end connection master control management module and energy management module, master control management module by it is built-in after
Electrical equipment drive module controls main relay and preliminary filling relay, and is communicated by built-in CAN with battery modules, with
And communicated with energy management module, the energy management module is communicated by 485 built-in communication modules with inverter.
The ac/dc power supply module is built-in with DC/DC modules and AC/DC modules, and the input of DC/DC modules connects
Direct current positive-negative input end is connect, AC/DC module inputs connect power network by AC breakers.
The master control management module is built-in with master control management single-chip microcomputer, the Power convert mould being connected with master control management single-chip microcomputer
Block, relay driving module, CAN, current sensor, the output end and Power convert of ac/dc power supply module
Module is connected, and master control management single-chip microcomputer is communicated by CAN with battery modules and energy management module, current sensor
The electric current of output circuit is detected, and is sent into master control management single-chip microcomputer.
The energy management module is built-in with energy management single-chip microcomputer, the Power convert mould being connected with energy management single-chip microcomputer
Block, CAN and 485 communication modules, the output end of ac/dc power supply module are connected with power transfer module, energy
Management single-chip microcomputer is communicated by CAN with master control management module, is communicated by 485 communication modules with inverter.
Breaker of plastic casing is two-way high pressure breaker of plastic casing.
Compared with prior art, a kind of expansible group string data large-scale energy storage system of the present utility model, have as follows
Usefulness：
Common large-scale energy storage system uses centralized solution, i.e., multigroup battery system is directly in DC side parallel, outside
A 250kw or 500kw high-power inverter is connect, the current sharing of different batteries in parallel connection groups can not be ensured, easily to high tension apparatus
Cause to damage with battery core；The utility model, in the AC parallel connection of inverter, is passed through inverter and actively adjusted using group string data mode
Charging and discharging currents are saved, can be very good to ensure the electric current current sharing of different parallel systems.
Common large-scale energy storage system uses centralized solution, when any single battery core breaks down, whole system
It must all be stopped；The utility model, when any single battery core breaks down, can disconnect this electricity using group string data scheme
The main relay and high pressure breaker of plastic casing of cluster where core, cut off charge-discharge circuit, ensure that other clusters work on.
Common large-scale energy storage system uses centralized solution, and when inverter breaks down, whole system is also necessary
It is stopped；The utility model uses a group string data scheme, when an inverter breaks down, can close this inverter,
Other clusters work on.
Generally expansible group string data large-scale energy storage system provide it is a kind of can safe, reliable, efficient operation side
Case.
Brief description of the drawings
Fig. 1 is the circuit module figure of the expansible group string data large-scale energy storage system disclosed in the utility model；
Fig. 2 is the circuit module figure of the battery modules disclosed in the utility model；
Fig. 3 is the circuit module figure of the high-voltaghe compartment disclosed in the utility model.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical scheme of the utility model embodiment is carried out clear, complete
Description.
As shown in figure 1, a kind of expansible group string data large-scale energy storage system disclosed in the utility model, by multiple lists
Cluster energy-storage system is formed in parallel, particularly, per cluster energy-storage system by 4 ~ 13 battery modules and a high-voltaghe compartment and inverse
Become device to be in series, wherein the power supply positive and negative terminal of 4 ~ 13 battery modules and high-voltaghe compartment input positive and negative terminal are sequentially connected in series to be formed back
Road, the output positive and negative terminal of the high-voltaghe compartment and the direct current positive and negative terminal of inverter connect, and between each battery modules and high-voltaghe compartment
By communication power supply bus connection communication port communication, pass through 485 bus communications, more cluster energy storage systems between high-voltaghe compartment and inverter
It is connected in parallel between the inverter of system by exchanging live wire with zero line realization is exchanged.
As shown in Fig. 2 the battery modules have direct current positive-negative output end, 2 and 16 string single battery cores, plurality of voltages collection
Module, multiplex temperature collection module, main control singlechip, active equalization module, AD conversion module, CAN, Power convert
Module and fuse, wherein 2 and 16 string single battery core composition rated voltages are 51.2V, rated capacity is 112Ah battery bag,
And positive pole inline fuse is connected with direct current positive output end, plurality of voltages acquisition module is MAX14921, to each single battery core
Magnitude of voltage be acquired, and sent to main control singlechip, multiplex temperature collection module by AD conversion module and passed by temperature
Sensor is acquired to the temperature of each single battery core, and is sent by AD conversion module to main control singlechip, main control singlechip
The magnitude of voltage of each single battery core and temperature value are sent to high-voltaghe compartment by CAN, while receives high-voltaghe compartment and sent out
The control signal come, main control singlechip adjust active equalization module according to the control signal of reception and each single battery core are risen
Pressure or decompression processing, power transfer module receive the 24V voltages that high-voltaghe compartment provides and main control singlechip are powered.
As shown in figure 3, the high-voltaghe compartment has a direct current positive-negative input end, direct current positive-negative output end, breaker of plastic casing, AC breaks
Road device, main relay, preliminary filling relay, preliminary filling resistance, ac/dc power supply module, master control management module, energy management module
And current sensor, wherein ac/dc power supply module is built-in with DC/DC modules and AC/DC modules, and DC/DC modules is defeated
Enter end connection direct current positive-negative input end, AC/DC module inputs connect power network by AC breakers, in the master control management module
Master control management single-chip microcomputer is equipped with, the power transfer module being connected with master control management single-chip microcomputer, relay driving module, CAN communication
Module and AD sampling modules, the energy management module are built-in with energy management single-chip microcomputer, are connected with energy management single-chip microcomputer
Power transfer module, CAN and 485 communication modules.
Particularly, the breaker of plastic casing is two-way high pressure breaker of plastic casing, and it is connected on direct-flow input end and direct current
Between output end, preliminary filling relay and precharge group series connection after it is in parallel with main relay, be then connected on again direct-flow input end with
Between DC output end, the output end of the DC/DC modules and AC/DC modules connects the Power convert of master control management module respectively
The power transfer modules of module and energy management module, the 24V direct currents of output are converted into 5V direct currents and supply electricity to single-chip microcomputer power supply,
CAN in the master control management module realizes the CAN communication with battery modules, and with energy management module
CAN communication, the master control management single-chip microcomputer drive main relay or preliminary filling relay, current sense by relay driving module
Device detects to the electric current of output circuit, and being sent into master control after being changed by AD sampling modules manages single-chip microcomputer, the energy pipe
Reason single-chip microcomputer is communicated by 485 communication modules with inverter.
A kind of expansible group string data large-scale energy storage system disclosed in the utility model, its course of work are：
Breaker of plastic casing in each cluster high-voltaghe compartment is closed, DC power supply exports 24V voltages in high-voltaghe compartment, and supplies electricity to cluster
Interior all battery modules；
Voltage acquisition module and temperature collect module in battery modules measure the voltage and temperature of each single battery core in real time
Spend, and the master control management module in high-voltaghe compartment is sent to by communication power supply bus, so as to the uniformity of real-time judge battery core；If
The voltage of any one economize on electricity core is significantly higher than other battery cores, and the active equalization module where triggering the battery core in battery modules will
The high battery core of voltage boosts to the battery modules stagnation pressure, is charged to battery modules；If the voltage of any one economize on electricity core is substantially less than
Battery modules stagnation pressure can be depressured the battery core charging low to voltage by other battery cores, active equalization module；
All battery modules and the same communication power supply bus communication all the way of high-voltaghe compartment in cluster；All battery cores in high-voltaghe compartment collection cluster
Status data, if fault-free, first close preliminary filling relay, postpone 5 seconds, close main relay, postpone 1 second, then disconnect preliminary filling
Relay, direct current supply is to inverter.If faulty, communication alert, preliminary filling and main relay are not closed.
If high-voltaghe compartment according to the magnitude of voltage of detection judge battery modules between voltage it is inconsistent, master control management module in high-voltaghe compartment
The high battery modules of voltage can be sent to by communication power supply bus communication, be disappeared by the high battery modules of voltage from opening resistor
The passive equalization function of consumption formula, reduces its voltage.
Communicated by CAN between master control management module and energy management module in high-voltaghe compartment, will owned in real time in cluster
Voltage, temperature, state of charge information and the maximum allowable charging and discharging currents of present battery system of battery are sent to energy management mould
Block, energy management module is according to the information received, by calculating, management strategy, is communicated by RS485 buses with inverter,
Control the discharge and recharge behavior of inverter.
When system has alternating current input, high-voltaghe compartment closure AC breakers, internal AC/DC power supply is cut automatically
Alternating Current Power Supply is shifted to, does not consume the electricity of battery in itself.
When in single cluster battery core exist overtension, brownout, charging current are excessive, discharge current is excessive, temperature is too high,
When temperature is too low, energy management module controls the charging and discharging currents of inverter using the mode such as drop power and alarm.
When battery core breaks down in single cluster, master control administrative unit control two-way high pressure breaker of plastic casing disconnects in high-voltaghe compartment
The charge-discharge circuit of this cluster battery system, guarantee do not influence whole energy-storage system.
Technology contents and technical characteristic of the present utility model are had revealed that as above, but those skilled in the art still may be used
A variety of replacements and modification without departing substantially from the utility model spirit can be made based on announcement of the present utility model, therefore, this practicality is new
Type protection domain should be not limited to the content disclosed in embodiment, and should replace and repair without departing substantially from of the present utility model including various
Decorations, and covered by present patent application claim.
Claims (7)
1. a kind of expansible group string data large-scale energy storage system, is formed in parallel by multiple single cluster energy-storage systems, it is characterised in that：
It is in series per cluster energy-storage system by 4 ~ 13 battery modules and a high-voltaghe compartment and inverter, wherein 4 ~ 13 battery moulds
Group power supply positive and negative terminal and high-voltaghe compartment input positive and negative terminal be sequentially connected in series to form loop, the output positive and negative terminal of the high-voltaghe compartment with it is inverse
Become the direct current positive and negative terminal connection of device, and led between each battery modules and high-voltaghe compartment by communication power supply bus connection communication port
Letter, by 485 bus communications between high-voltaghe compartment and inverter, by exchanging live wire and friendship between the inverter of more cluster energy-storage systems
Stream zero line, which is realized, to be connected in parallel.
A kind of 2. expansible group string data large-scale energy storage system according to claim 1, it is characterised in that：The electricity
Pond module has direct current positive-negative output end, 2 and 16 string single battery cores, plurality of voltages acquisition module, multiplex temperature collection module, master
Single-chip microcomputer, active equalization module, CAN and fuse are controlled, wherein 2 and 16 string single battery core positive pole inline fuses
It is connected with direct current positive output end, plurality of voltages acquisition module is acquired to the magnitude of voltage of each single battery core, and is sent to master
Single-chip microcomputer is controlled, multiplex temperature collection module is acquired by temperature sensor to the temperature of each single battery core, and is sent extremely
Main control singlechip, main control singlechip send the magnitude of voltage of each single battery core and temperature value to high pressure by CAN
Case, while the control signal that high-voltaghe compartment is sent is received, main control singlechip adjusts active equalization mould according to the control signal of reception
Block is boosted by each single battery core or decompression processing.
A kind of 3. expansible group string data large-scale energy storage system according to claim 1, it is characterised in that：The high pressure
Case has a direct current positive-negative input end, direct current positive-negative output end, breaker of plastic casing, AC breakers, main relay, preliminary filling relay,
Preliminary filling resistance, ac/dc power supply module, master control management module and energy management module, wherein breaker of plastic casing are connected on directly
Flow between input and DC output end, it is in parallel with main relay after preliminary filling relay and the series connection of precharge group, then connect again
Between direct-flow input end and DC output end, the direct-flow input end connection direct current positive-negative input end of ac/dc power supply module,
Output end connects master control management module and energy management module, and master control management module is controlled by built-in relay driving module
Main relay and preliminary filling relay, and communicated by built-in CAN with battery modules, and and energy management module
Communication, the energy management module are communicated by 485 built-in communication modules with inverter.
A kind of 4. expansible group string data large-scale energy storage system according to claim 3, it is characterised in that：The friendship
Stream/direct current supply module is built-in with DC/DC modules and AC/DC modules, and the input connection positive negative input of direct current of DC/DC modules
End, AC/DC module inputs connect power network by AC breakers.
A kind of 5. expansible group string data large-scale energy storage system according to claim 3, it is characterised in that：The master control
Management module is built-in with master control management single-chip microcomputer, the power transfer module being connected with master control management single-chip microcomputer, relay driving mould
Block, CAN, current sensor, the output end of ac/dc power supply module are connected with power transfer module, master control pipe
Reason single-chip microcomputer is communicated by CAN with battery modules and energy management module, electricity of the current sensor to output circuit
Stream is detected, and is sent into master control management single-chip microcomputer.
A kind of 6. expansible group string data large-scale energy storage system according to claim 3, it is characterised in that：The energy
Management module is built-in with energy management single-chip microcomputer, the power transfer module being connected with energy management single-chip microcomputer, CAN and
485 communication modules, the output end of ac/dc power supply module are connected with power transfer module, and energy management single-chip microcomputer passes through CAN
Communication module communicates with master control management module, is communicated by 485 communication modules with inverter.
A kind of 7. expansible group string data large-scale energy storage system according to claim 3, it is characterised in that：Plastic housing open circuit
Device is two-way high pressure breaker of plastic casing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720519961.2U CN206807150U (en) | 2017-05-11 | 2017-05-11 | A kind of expansible group string data large-scale energy storage system |
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| CN201720519961.2U CN206807150U (en) | 2017-05-11 | 2017-05-11 | A kind of expansible group string data large-scale energy storage system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069976A (en) * | 2017-05-11 | 2017-08-18 | 沃太能源南通有限公司 | A kind of expansible group string data large-scale energy storage system |
| CN108683202A (en) * | 2018-04-12 | 2018-10-19 | 浙江正泰电器股份有限公司 | Energy-storage system |
| CN110289692A (en) * | 2019-06-28 | 2019-09-27 | 江苏慧智能源工程技术创新研究院有限公司 | A kind of energy storage method and system architecture of retired battery pack |
| CN112600281A (en) * | 2020-12-30 | 2021-04-02 | 东方旭能(山东)科技发展有限公司 | Energy storage system of low-voltage direct current inversion |
-
2017
- 2017-05-11 CN CN201720519961.2U patent/CN206807150U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069976A (en) * | 2017-05-11 | 2017-08-18 | 沃太能源南通有限公司 | A kind of expansible group string data large-scale energy storage system |
| CN108683202A (en) * | 2018-04-12 | 2018-10-19 | 浙江正泰电器股份有限公司 | Energy-storage system |
| CN110289692A (en) * | 2019-06-28 | 2019-09-27 | 江苏慧智能源工程技术创新研究院有限公司 | A kind of energy storage method and system architecture of retired battery pack |
| CN112600281A (en) * | 2020-12-30 | 2021-04-02 | 东方旭能(山东)科技发展有限公司 | Energy storage system of low-voltage direct current inversion |
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| CP03 | Change of name, title or address |
Address after: 226100 No.888, Jiuhua Road, high tech Zone, Nantong City, Jiangsu Province Patentee after: Wotai Energy Co.,Ltd. Address before: 226000 No. 888 Jiuhua Road, Tongzhou District, Nantong City, Jiangsu Province Patentee before: NEOVOLTAIC ENERGY NANTONG Co.,Ltd. |