CN216436846U - Battery energy storage system - Google Patents
Battery energy storage system Download PDFInfo
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- CN216436846U CN216436846U CN202122944166.7U CN202122944166U CN216436846U CN 216436846 U CN216436846 U CN 216436846U CN 202122944166 U CN202122944166 U CN 202122944166U CN 216436846 U CN216436846 U CN 216436846U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 90
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 27
- 239000000178 monomer Substances 0.000 claims description 14
- 238000003491 array Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008034 disappearance Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000002567 autonomic effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a battery energy storage system has the fixed and online control battery module switching that just can not of group battery string connected mode to prior art for the battery parameter when great nonconformity and exception appear, produces the short slab effect of inefficiency and causes the function disappearance that the operation and maintenance management and control is inconvenient, do not have automatic "insert/break away from". According to the scheme, the plurality of switch groups are adopted and are respectively installed and connected between the positive and negative ends of the corresponding battery modules and the direct-current connecting busbar, the battery monitoring module controls the switch driving circuits and the connected corresponding switch groups according to the control instruction of the battery energy storage unit system management device, autonomous switching management and control of the corresponding battery modules are realized, the fatal defect that in the prior art, due to the fact that bypass switches are connected with the battery modules in parallel, an abnormal battery module is separated from the autonomous management and control of cutting is overcome, and the overall efficiency of the battery energy storage system is improved while the safety of the battery energy storage system is improved.
Description
Technical Field
And the utility model belongs to the technical field of the battery energy storage, concretely relates to battery energy storage system.
Background
Under the double-carbon target, a new energy power generation system is rapidly developed, meanwhile, the demand on an energy storage system is larger and larger, at present, a battery system is a main form with wide application, and the capacity and scale demand of the energy storage system are increased along with the increase of new energy power. Therefore, the number of the battery modules and the number of the battery monomers adopted in the battery energy storage system are more and more, and the requirements on the serial-parallel connection architecture design and the operation and maintenance of the battery modules are higher and higher when the battery energy storage system is formed.
The series-parallel connection of the traditional battery usually adopts a fixed connection mode, and in operation and maintenance, the battery cannot be automatically disconnected after being connected, and the battery has the short board effect of reduced operation efficiency, inconvenient safety management and control and function loss without automatic 'access/disconnection' except manual intervention.
For this reason, the industry is actively researching corresponding solutions. The invention patent CN113315201 discloses a solution, however, the technical solution of the invention has serious drawbacks. The main defects are as follows: claim 1 of the present application describes that "the plurality of battery modules are connected in series and/or in parallel, and the plurality of battery management devices are in one-to-one correspondence with the plurality of battery modules" …; the battery energy storage system of claim 2, wherein the switching circuit comprises: the battery energy storage system comprises a bypass switch and a circuit breaker, wherein the bypass switch is connected with a corresponding battery module in parallel, and the circuit breaker is connected with the corresponding battery module in series, and when the bypass switch is in an open state and the circuit breaker is in a closed state, the battery module is connected into the battery energy storage system; when the bypass switch is in a closed state and the circuit breaker is in an open state, the battery module is separated from the battery energy storage system. "and the description of the invention in paragraphs 31, 32 and 33: the "switch circuit 201 includes a bypass switch connected in parallel with the corresponding battery module and a cut-off switch connected in series with the corresponding battery module. When the bypass switch is in an open state and the circuit breaker is in a closed state, the battery module is connected to the energy storage system 100 and the bypass switch is closed, and when the circuit breaker is open, the battery module is disconnected from the energy storage system 100. "
The product architecture and the organization and connection relationship of the components of the technical scheme of the invention have serious defects that: the closed bypass can cause a plurality of modules connected in parallel to generate a short circuit, and the short circuit is one of the main reasons of explosion of a battery energy storage system, particularly a lithium battery energy storage system.
Disclosure of Invention
In order to overcome above-mentioned prior art's serious defect to overcome prior art and just can't independently break away from the defect of connection after the battery is connected, the utility model provides a battery energy storage system can overcome fatal defect in the parallelly connected organizational structure of bypass switch and battery module, and the realization that again can be simple and direct convenient will produce the battery module of anomaly and independently break away from the management and control of cutting out. The utility model discloses a battery energy storage system, a serial communication port, include: the system comprises a plurality of battery modules, a plurality of switch groups, a plurality of battery monitoring modules, switch group on-off control lines, battery monitoring sensors, wire harnesses, a system management and control communication line, an energy storage converter, a battery energy storage unit system management device, a direct current connection busbar, a plurality of battery module arrays and a battery energy storage unit system; the plurality of switch groups correspond to the plurality of battery modules one by one and are connected to two ends of the corresponding battery modules in series; the plurality of battery monitoring modules are connected with the corresponding plurality of switch groups through switch group on-off control lines and control the on-off of the corresponding switch groups; the battery energy storage unit system management device comprises a plurality of battery modules, a plurality of battery monitoring modules, a plurality of system management control lines and a plurality of battery energy storage unit system management devices, wherein the battery modules are connected with the corresponding battery modules and each battery monomer through a battery monitoring sensor and a wire harness; the plurality of battery modules are connected with the direct-current connecting busbar in parallel through the corresponding plurality of switch groups to form a battery module array, and the plurality of battery module arrays are connected in series and meet the voltage range of the direct-current side of the energy storage converter, are connected into the direct-current side of the energy storage converter and form a battery energy storage unit system together with the battery energy storage unit system management device.
The battery energy storage system is characterized in that each battery monitoring module of the plurality of battery monitoring modules comprises:
the battery parameter adopting circuit is connected with each battery monomer in the corresponding battery module through the battery monitoring sensor and the wire harness respectively, and forms a battery parameter adopting circuit for monitoring the voltage and temperature parameters of the battery monomers and the current parameters of the battery module through the internal sampling signal conversion processing and threshold circuit;
the switch driving circuit is connected with the corresponding switch group through a switch group on-off control line to form a control path for switching in or isolating the battery module;
the communication circuit is communicated with the battery energy storage unit system management device through a system management and control communication line;
and the control circuit is connected with the battery parameter adopting circuit, the switch driving circuit and the communication circuit respectively, and is connected with the battery energy storage unit system management device (80) through the communication circuit and a system management and control communication line (60) to form a management and control path for controlling the switch driving circuit so as to switch corresponding battery modules.
The battery energy storage system is characterized in that each switch group in the plurality of switch groups is composed of two switches, is respectively installed at the positive electrode and negative electrode connecting ends of the corresponding battery module, and is respectively connected between the positive electrode and negative electrode ends of the battery module and the direct current connecting busbar.
The battery energy storage system is characterized in that each battery module of the plurality of battery modules is formed by connecting a plurality of battery monomers in series to form a battery module of a battery monomer series-connection string.
The battery energy storage system is characterized in that the battery energy storage unit system management device is connected with the energy storage converter through a system management and control communication line to form a control path for power regulation of the energy storage converter.
The utility model provides a battery energy storage system has the fixed and online control battery module switching that just can not of group battery string connected mode to prior art for the battery parameter when great nonconformity and exception appear, produces the short slab effect of efficiency reduction and causes the function disappearance that safety control is inconvenient, do not have automatic "insert/break away from" except that artificial intervention. The utility model discloses a plurality of switch groups, and install respectively at the positive pole and the negative pole link of corresponding battery module, insert respectively between the female row of direct current at the positive negative pole both ends of battery module, and receive through system management and control communication line the control instruction of battery energy storage unit system management device to control switch drive circuit and the corresponding switch group of connection according to control instruction, realized carrying out the switching management and control to corresponding battery module, overcome prior art and adopted the parallelly connected fatal defect that produces the organizational structure of bypass switch and battery module, can simple and direct convenient realization will produce the battery module of anomaly and break away from the autonomic management and control of surely, when improving battery energy storage system's security, improved battery energy storage system's whole efficiency simultaneously.
Drawings
Fig. 1 is a schematic block diagram of a battery energy storage system.
Detailed Description
A battery energy storage system will be described as an example of an embodiment with reference to the accompanying drawings, but the embodiment described is a part of an embodiment in which the present invention is applied to a battery energy storage system, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The technology and the scheme of the utility model are not limited to the content given in this embodiment.
As shown in fig. 1, a battery energy storage system, comprising: the system comprises a plurality of battery modules (10), a plurality of switch groups (20), a plurality of battery monitoring modules (30), a switch group on-off control line (40), a battery monitoring sensor, a wire harness (50), a system management and control communication line (60), an energy storage converter (70), a battery energy storage unit system management device (80), a direct current connection busbar (90), a plurality of battery module arrays (100) and a battery energy storage unit system (110); the switch groups (20) correspond to the battery modules one by one and are connected to two ends of the corresponding battery modules in series; the battery monitoring modules (30) are connected with the corresponding switch groups (20) through switch group on-off control lines (40) and control the on-off of the corresponding switch groups; the battery energy storage unit management system comprises a plurality of battery monitoring modules (30), a wire harness (50), a plurality of battery energy storage unit system management devices (80), a plurality of battery monitoring modules (30), a plurality of battery monitoring sensors and a plurality of corresponding battery modules (10) and each battery monomer, wherein the battery monitoring modules (30) are connected with the battery energy storage unit system management devices (80) through system management and control communication wires (60) and used for carrying out switching management and control on the corresponding battery modules according to control instructions of the battery energy storage unit system management devices (80); the plurality of battery modules (10) are connected with the direct-current connecting busbar (90) in parallel through the corresponding plurality of switch groups (20) to form a battery module array (100), and the plurality of battery module arrays (100) are connected in series and meet the direct-current side voltage range of the energy storage converter (70), are connected into the direct-current side of the energy storage converter (70), and form a battery energy storage unit system (110) together with the battery energy storage unit system management device (80).
The battery energy storage system, characterized in that each battery monitoring module (30) of the plurality of battery monitoring modules (30) comprises:
the battery parameter adopting circuit is connected with each battery monomer in the corresponding battery module (10) through a battery monitoring sensor and a wire harness (50) respectively, and forms a battery parameter adopting circuit for monitoring the voltage and temperature parameters of the battery monomers and the current parameters of the battery module through an internal sampling signal conversion processing and threshold circuit;
the switch driving circuit is connected with the corresponding switch group (20) through a switch group on-off control line (40) to form a control path for switching in or isolating the battery module;
the communication circuit is connected with the battery energy storage unit system management device (80) through a system management and control communication line (60) to form a communication path for management and control;
and the control circuit is connected with the battery parameter adopting circuit, the switch driving circuit and the communication circuit respectively, and is connected with the battery energy storage unit system management device (80) through the communication circuit and a system management and control communication line (60) to form a management and control path for controlling the switch driving circuit so as to switch corresponding battery modules.
The battery energy storage system is characterized in that each switch group in a plurality of switch groups (20) is composed of two switches, is respectively installed at the positive electrode and negative electrode connecting ends of the corresponding battery module, and is respectively connected between the positive electrode and negative electrode two ends of the battery module and a direct current connecting bus bar (90).
The battery energy storage system is characterized in that each battery module of the plurality of battery modules (10) is formed by connecting a plurality of battery monomers in series to form a battery module of a battery monomer series-connection string.
The battery energy storage system is characterized in that a battery energy storage unit system management device (80) is connected with an energy storage converter (70) through a system management and control communication line (60) to form a control path for power regulation of the energy storage converter.
The utility model provides a battery energy storage system has the fixed and online control battery module switching that just can not of group battery string connected mode to prior art for the battery parameter when great nonconformity and exception appear, produces the short slab effect of efficiency reduction and causes the function disappearance that safety control is inconvenient, do not have automatic "insert/break away from" except that artificial intervention. The utility model discloses a plurality of switch groups, and install respectively at the positive pole and the negative pole link of corresponding battery module, insert respectively between the female row of direct current at the positive negative pole both ends of battery module, and receive through system management and control communication line the control instruction of battery energy storage unit system management device to control switch drive circuit and the corresponding switch group of connection according to control instruction, realized carrying out the switching management and control to corresponding battery module, overcome prior art and adopted the parallelly connected fatal defect that produces the organizational structure of bypass switch and battery module, can simple and direct convenient realization will produce the battery module of anomaly and break away from the autonomic management and control of surely, when improving battery energy storage system's security, improved battery energy storage system's whole efficiency simultaneously.
Claims (5)
1. A battery energy storage system, comprising: the system comprises a plurality of battery modules, a plurality of switch groups, a plurality of battery monitoring modules, switch group on-off control lines, battery monitoring sensors, wire harnesses, a system management and control communication line, an energy storage converter, a battery energy storage unit system management device, a direct current connection busbar, a plurality of battery module arrays and a battery energy storage unit system; the switch groups correspond to the battery modules one by one and are connected to two ends of the corresponding battery modules in series; the plurality of battery monitoring modules are connected with the corresponding plurality of switch groups through switch group on-off control lines and control the on-off of the corresponding switch groups; the battery energy storage unit system management device comprises a plurality of battery modules, a plurality of battery monitoring modules, a plurality of system management control lines and a plurality of battery energy storage unit system management devices, wherein the battery modules are connected with the corresponding battery modules and each battery monomer through a battery monitoring sensor and a wire harness; the plurality of battery modules are connected with the direct-current connecting busbar in parallel through the corresponding plurality of switch groups to form a battery module array, and the plurality of battery module arrays are connected in series and meet the voltage range of the direct-current side of the energy storage converter and are connected into the direct-current side of the energy storage converter to form a battery energy storage unit system.
2. The battery energy storage system of claim 1, wherein each battery monitoring module of the plurality of battery monitoring modules comprises:
the battery parameter adopting circuit is connected with each battery monomer in the corresponding battery module through the battery monitoring sensor and the wire harness respectively, and forms a battery parameter adopting circuit for monitoring the voltage and temperature parameters of the battery monomers and the current parameters of the battery module through the internal sampling signal conversion processing and threshold circuit;
the switch driving circuit is connected with the corresponding switch group through a switch group on-off control line to form a control path for switching in or isolating the battery module;
the communication circuit is connected with the battery energy storage unit system management device through a system management and control communication line to form a communication path for management and control;
and the control circuit is respectively connected with the battery parameter adopting circuit, the switch driving circuit and the communication circuit, and is connected with the battery energy storage unit system management device through the communication circuit and the system management and control communication line to form a management and control path for controlling the switch driving circuit so as to switch corresponding battery modules.
3. The battery energy storage system of claim 1, wherein each of the plurality of switch sets comprises two switches, and the two switches are respectively installed at the positive and negative connection terminals of the corresponding battery module and respectively connected between the positive and negative terminals of the battery module and the dc connection bus bar.
4. The battery energy storage system of claim 1, wherein each battery module of the plurality of battery modules is formed by connecting a plurality of battery cells in series to form a battery module of a battery cell series string.
5. The battery energy storage system according to claim 1, wherein the battery energy storage unit system management device is connected to the energy storage converter through a system management and control communication line to form a control path for power regulation of the energy storage converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944166.7U CN216436846U (en) | 2021-11-29 | 2021-11-29 | Battery energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944166.7U CN216436846U (en) | 2021-11-29 | 2021-11-29 | Battery energy storage system |
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| Publication Number | Publication Date |
|---|---|
| CN216436846U true CN216436846U (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122944166.7U Active CN216436846U (en) | 2021-11-29 | 2021-11-29 | Battery energy storage system |
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| CN (1) | CN216436846U (en) |
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2021
- 2021-11-29 CN CN202122944166.7U patent/CN216436846U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: No. 512 Tangjiahu Avenue, Pingwang Town, Wujiang District, Suzhou City, Jiangsu Province, China Patentee after: Suzhou New Energy Technology Co.,Ltd. Address before: Room 301, No. 2 North Building, No. 8 Nanhun Road, Chaoyang District, Beijing 100102 Patentee before: Zhou Xiwei |