CN216904353U

CN216904353U - Digital energy storage system with reconfigurable direct-current regulation and control module architecture

Info

Publication number: CN216904353U
Application number: CN202220001146.8U
Authority: CN
Inventors: 周锡卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-07-05
Anticipated expiration: 2032-01-04

Abstract

The utility model provides a digital energy storage system with a reconfigurable direct current regulation module framework, which adopts an innovative direct current regulation module group serial switch array, utilizes the voltage range of terminal voltage of a direct current regulation module to realize online dynamic regulation, realizes large-range maintenance of the voltage of the battery group serial terminal, controls the switch array to cut out a direct current regulation module and controls the shutdown of the direct current regulation module, thereby dynamically cutting off power to isolate corresponding batteries or battery packs, realizes safe online maintenance and replacement of the corresponding batteries or battery packs, overcomes the defects of the prior art, comprehensively performs digital regulation of the battery energy storage system through dynamic reconfiguration of the reconfigurable direct current regulation module framework, realizes the serial and parallel controlled reconfiguration of the batteries or battery packs, can timely isolate abnormal fault batteries or battery packs to cut out for online maintenance and replacement, and prevents risks and malignant accidents, the design goal of reconstructing the battery pack safely, economically and efficiently is achieved, and substantial beneficial effects are achieved.

Description

Digital energy storage system with reconfigurable direct-current regulation and control module architecture

Technical Field

The utility model belongs to the technical field of battery energy storage, and particularly relates to a digital energy storage system with a reconfigurable direct current regulation and control module architecture.

Background

The battery energy storage system is a battery pack formed by connecting a plurality of batteries with small electric quantity in series and parallel, and is connected to a power grid through an energy storage converter for charging and discharging. The defect that the inconsistency of the battery monomer is unavoidable is particularly obvious when the battery and the retired battery are used for a period of time, and the battery of the battery energy storage system is different in installation and physical position and relatively fixed in connection and placement, so that the influence of the inconsistency on the charging and discharging electric quantity of the battery is further increased, the short plate effect that the overall efficiency is reduced is caused when the battery energy storage system is charged and discharged, and the unsafe risk that the battery is overcharged or overdischarged or even detonated is easily caused due to the fact that the voltage and electric quantity of the individual battery are too large in deviation. Therefore, the battery pack needs to be flexibly adjusted and dynamically maintained, the battery voltage and the electric quantity consistency of charging and discharging of the battery pack are guaranteed to be in a controllable range, the overcharge, overdischarge and short plate effects of the battery are avoided, and the safety, the utilization rate and the investment income of a battery energy storage system are improved.

The battery energy storage system is formed by connecting a plurality of batteries with small electric quantity in series to form a battery pack string to reach the direct-current voltage required by an energy storage converter, the number of the batteries connected with the battery pack string is conventionally up to hundreds of battery monomers in series connection, and the battery energy storage system is formed by using the battery energy storage system for a period of time or adopting retired power batteries, so that the probability of abnormity, failure and safety risk of the battery monomers is increased. Therefore, it is particularly important to dynamically maintain and reconfigure battery packs for battery energy storage systems constructed using batteries that have been in service for a period of time or retired. The battery pack with the reconfigurable battery connection structure adopts a connection mode that batteries of the battery pack are dynamically controlled to be reconnected to form a new battery pack through the electric control switch array, so that the consistency of the voltage and the electric quantity of the batteries in the battery pack is optimized, and the safety and the economy of the batteries are improved, which is a technical problem which is struggled in the industry. The utility model patent number of the utility model patent of battery pack management system and control method published by the national intellectual property office is CN107275691A, the technical scheme and the system architecture and control method for battery pack reconstruction disclosed and proposed by the attached figures 2-5 thereof, because the switch array directly regulates and controls the corresponding batteries or battery packs, and the battery or battery pack string needs to meet the voltage range of the direct current end of the energy storage converter, the range of cutting out and replacing the batteries or battery packs is limited, at least one end of the batteries or battery packs of the battery pack string is always connected in the battery pack string, and can not be controlled to be cut out for online maintenance and replacement, the reconfigurable battery pack and the energy storage system architecture of the technical scheme have obvious defects in the aspects of online cutting out, regulating and maintaining the end voltage of the battery pack, the reconfigurable range is severely limited and the batteries or battery packs can not be cut out thoroughly, the replacement and maintenance in online electrification have operation risks, the reconfigurable integrity and timeliness of the energy storage system are affected, the problems of preventing potential safety hazards of the whole battery pack and the battery energy storage system and improving the utilization rate of the battery energy storage system are difficult to effectively solve, and the expected aim of improving safety and economy of the reconfigured battery pack cannot be achieved.

In order to solve the problems and overcome the defects of the prior art, the abnormal battery can be isolated and cut in time, the voltage of the battery pack string end is kept within a required range, and the overall safe and efficient operation of the battery energy storage system is ensured; according to the digital energy storage system with the reconfigurable direct current regulation and control module architecture, the voltage range of the terminal voltage of the direct current regulation and control module can be dynamically regulated and controlled on line, the direct current regulation and control module group serial switch array is controlled to cut out the corresponding direct current regulation and control module and control the direct current regulation and control module to stop, so that the power of the battery or the battery pack is dynamically cut off, the corresponding abnormal battery or battery pack is isolated in real time in the integral continuous operation of the battery energy storage system, the corresponding battery or battery pack is safely maintained and replaced on line, the defects of the prior art are overcome, the digital regulation of the battery energy storage system is carried out through the dynamic reconfiguration of the reconfigurable direct current regulation and control module architecture, the occurrence of risks and malignant accidents is prevented, the design goal of safely and efficiently reconfiguring the digital energy storage system is achieved, and substantial beneficial effects are obtained.

Disclosure of Invention

In order to solve the above problems and overcome the defects of the prior art, the present invention provides a digital energy storage system with a reconfigurable dc regulation module architecture, which mainly comprises: the reconfigurable direct current regulation and control module string, the direct current bus, the energy storage converter, the power line of the power grid, the upper computer energy storage system management and control system, the system management and control communication bus, the direct current regulation and control module is connected with the positive terminal of the battery or the battery pack, the direct current regulation and control module is connected with the negative terminal of the battery or the battery pack, the reconfiguration controller of the direct current regulation and control module string, the battery parameter acquisition communication line, the positive input and output terminal of the direct current regulation and control module, the negative input and output terminal of the direct current regulation and control module, the direct current regulation and control module string switch array, the direct current regulation and control module string monitoring line, the direct current regulation and control module, the battery or the battery pack, the positive terminal of the battery or the battery pack, the negative terminal of the battery or the battery pack, the positive connecting line of the direct current regulation and control module string, and the negative connecting line of the direct current regulation and control module string, wherein a plurality of the direct current regulation and control modules of the reconfigurable direct current regulation and control module string are connected through the direct current regulation and control module string switch array, the plurality of direct current regulation and control modules are respectively connected with corresponding batteries or battery packs, the reconfigurable direct current regulation and control module set is connected into a direct current bus in series, and the direct current bus is connected into a power line of a power grid through an energy storage converter to form a digital energy storage system of a reconfigurable direct current regulation and control module framework and a charging and discharging power path; the reconfigurable direct current regulation and control module group string is characterized by comprising: the direct current regulation and control module string reconstruction controller is connected with an energy storage system management and control system of an upper computer through a system management and control communication bus to form a digital energy storage monitoring and control management system with reconfigurable energy storage system battery charging and discharging energy management and direct current regulation and control module frame.

The digital energy storage system with the reconfigurable direct-current regulation and control module architecture is characterized in that the direct-current regulation and control module group serial switch array is formed by a plurality of switches to form a plurality of switch groups and corresponds to a plurality of direct-current regulation and control modules, wherein the first switch group is provided with 4 switches, the last switch group is provided with 1 switch, and the rest switch groups are provided with 5 switches; each switch group corresponds to a corresponding direct current regulation and control module, and the connection mode is as follows: the first switch group, namely, the 1 st switch of the 1 st switch group is respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module group cathode connecting wire, meanwhile, the DC regulation module anode input/output terminal of the 1 st DC regulation module is connected with the DC regulation module group anode connecting wire, the two ends of the 2 nd switch of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module, the two ends of the 3 rd switch of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module, the two ends of the 4 th switch of the 1 st switch group are respectively connected with the DC regulation module anode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module A block positive input-output terminal;

the tail switch group, namely the jth switch group is provided with a switch, and two ends of the 1 st switch of the jth switch group are respectively connected with the positive input/output terminal of the direct current regulation module of the jth direct current regulation module and the positive connecting wire of the direct current regulation module group string;

the other switch groups are connected in a manner that the 1 st switch of the ith switch group is connected with the positive input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the positive connecting wire of the direct current regulation and control module group string, the 2 nd switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the negative connecting wire of the direct current regulation and control module group string, the 3 rd switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the negative input/output terminal of the direct current regulation and control module of the jth direct current regulation and control module, the 4 th switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the positive input/output terminal of the direct current regulation and control module of the jth direct current regulation and control module, and the 5 th switch of the ith switch group is connected with the positive input/output terminal of the regulation and control module of the ith direct current regulation and control module Positive input and output terminals of the direct current regulation and control modules of the sub and jth direct current regulation and control modules; thus, a reconfigurable direct current regulation and control module architecture with dynamically controlled reconfigurable direct current regulation and control module group strings is formed.

The digital energy storage system with the reconfigurable direct current regulation and control module architecture is characterized in that the direct current regulation and control module comprises a direct current regulation and control module controller, a DCDC direct current voltage regulation and control module, a module input and output positive switch and protection circuit, a module input and output negative switch and protection circuit, a DCDC direct current voltage and control line, a direct current regulation and control module multipath communication interface, a direct current regulation and control module connected with a positive terminal of a battery or a battery pack, a direct current regulation and control module connected with a negative terminal of the battery or the battery pack, a direct current regulation and control module positive input and output terminal, and a direct current regulation and control module negative input and output terminal, wherein the direct current regulation and control module controller is respectively connected with the DCDC direct current voltage regulation and control module, the module input and output positive switch and protection circuit, the module input and output negative switch and protection circuit through the DCDC direct current voltage and the control line, and controls the input and output voltages of the DCDC direct current voltage regulation and control module, and a charging and discharging power regulation control path of the battery or the battery pack is formed.

The digital energy storage system with the reconfigurable direct-current regulation and control module architecture is characterized in that a battery or a battery pack mainly comprises a battery and battery series module, a battery parameter sampling and monitoring module, a battery parameter sampling sensor and a wire harness, a battery or battery pack positive switch and protection circuit, a battery or battery pack negative switch and protection circuit, a battery or battery pack positive terminal, a battery or battery pack negative terminal and a battery or battery pack external communication connecting terminal; the battery parameter sampling and monitoring module is connected with a battery and a battery series module through a battery parameter sampling sensor and a wire harness to form a communication link for real-time sampling and monitoring of battery voltage, temperature and current parameters, and is connected with and communicated with the direct current regulation and control module through a battery or a battery pack external communication connecting terminal; meanwhile, the positive electrodes of the battery and the battery series module are connected with the positive terminal of the battery or the battery pack through the positive switch of the battery or the battery pack, and the negative electrodes of the battery and the battery series module are connected with the negative terminal of the battery or the battery pack through the negative switch of the battery or the battery pack and the protection circuit, so that the battery or the battery pack which is replaced in an online plugging mode is formed.

The digital energy storage system with the reconfigurable direct current regulation and control module architecture is characterized in that a direct current regulation and control module string reconfiguration controller is connected with each direct current regulation and control module through a battery parameter acquisition communication line and is connected with a corresponding battery or battery pack through the direct current regulation and control module to form a communication link for monitoring and acquiring voltage, temperature and current parameters of each battery monomer in the battery or battery pack in real time, and meanwhile, the direct current regulation and control module string reconfiguration controller is connected with a direct current regulation and control module string switch array through a battery parameter acquisition communication line to form an active rapid lossless equalization regulation and control path for controlling the direct current regulation and control module to output and input voltage and dynamically regulate the electric quantity of the battery or battery pack.

The digital energy storage system with the reconfigurable direct current regulation and control module architecture is characterized in that an upper computer energy storage system management and control system is respectively connected with a direct current regulation and control module group string reconfiguration controller and an energy storage converter to form a digital energy storage system with the reconfigurable direct current regulation and control module architecture and an electric energy interaction control link.

The digital energy storage system with the reconfigurable direct-current regulation and control module architecture is characterized in that the direct-current regulation and control module is connected with a positive terminal of a battery or a battery pack through the direct-current regulation and control module and is connected with a positive terminal of the battery or the battery pack, meanwhile, the direct-current regulation and control module is connected with a negative terminal of the battery or the battery pack through the direct-current regulation and control module and is connected with a negative terminal of the battery or the battery pack, and the direct-current regulation and control module is connected with an external communication connecting terminal of the battery or the battery pack through a multi-path communication interface of the direct-current regulation and control module; and forming a reconfigurable digital battery unit module with controlled and regulated direct-current voltage.

The utility model provides a digital energy storage system with a reconfigurable direct current regulation module framework, which adopts an innovative direct current regulation module group serial switch array, utilizes the voltage range of terminal voltage of a direct current regulation module to realize online dynamic regulation, realizes large-range maintenance of the voltage of the serial terminal of a battery group, controls the switch array to cut out a direct current regulation module and control the shutdown of the direct current regulation module, thereby dynamically cutting off the power of a battery or a battery pack, isolates corresponding abnormal batteries or battery packs in real time in the integral continuous operation of the battery energy storage system, realizes the safe online maintenance and replacement of the corresponding batteries or battery packs, overcomes the defects of the prior art, carries out the digital regulation of the battery energy storage system by comprehensively and dynamically reconstructing the reconfigurable direct current regulation module framework, realizes the serial-parallel connection reconstruction control of the batteries or the battery packs, and can timely isolate and cut out abnormal fault batteries or battery packs to carry out the online maintenance and replacement, the method has the advantages of preventing risks and malignant accidents, finishing flexible reconfiguration of the battery and the battery pack, reducing short plate effect, achieving the design target of reconfiguring the battery pack safely, economically and efficiently and obtaining substantial beneficial effects.

Drawings

Fig. 1 is a schematic block diagram of a digital energy storage system with a reconfigurable dc regulation module architecture.

Fig. 2 is a schematic diagram of a connection structure of the dc regulation and control module and the switch of the switch group in the same reconfigurable dc regulation and control module group string.

Fig. 3 is a schematic diagram of a connection structure principle of a switch group which is connected in the same reconfigurable direct current regulation module group and is isolated and switched out by corresponding direct current regulation modules of abnormal fault batteries or battery packs.

Fig. 4 is a schematic diagram of a switch group connection structure in which the dc regulation modules in the same reconfigurable dc regulation module group string are connected in series.

Fig. 5 is a schematic diagram of a switch group connection structure in which the dc regulation modules in the same reconfigurable dc regulation module group string are connected in parallel.

Fig. 6 is a schematic diagram of a switch group connection structure in which the dc regulation modules in the same reconfigurable dc regulation module group string are connected in parallel and in series.

Fig. 7 is a schematic diagram of a switch group connection structure in which dc regulation modules in the same reconfigurable dc regulation module group string are connected in series and in parallel.

Fig. 8 is a schematic diagram of a connection structure of switch groups in which the dc regulation modules in the same reconfigurable dc regulation module group are connected in parallel.

Fig. 9 is a schematic diagram of the dc regulation module.

Fig. 10 is a schematic diagram of the construction of a battery or battery pack.

Fig. 11 is a schematic diagram illustrating the connection principle between the dc regulation module and the battery or the battery pack.

Detailed Description

The digital energy storage system with the reconfigurable direct current regulation and control module architecture is described as an implementation example with reference to the attached drawings, however, the described embodiment is a part of the embodiment of the digital energy storage system with the reconfigurable direct current regulation and control module architecture, and not all of the embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The techniques and schemes of the present invention are not limited to those given in this example.

As shown in fig. 1 and fig. 11, a digital energy storage system with a reconfigurable dc regulation module architecture mainly includes: the reconfigurable direct-current regulation and control module group string comprises a reconfigurable direct-current regulation and control module string (1), a direct-current bus (2), an energy storage converter (3), a power grid power line (4), an upper computer energy storage system management and control system (5), a system management and control communication bus (6), a positive terminal (9) of a battery or a battery pack connected with the direct-current regulation and control module, a negative terminal (10) of the battery or the battery pack connected with the direct-current regulation and control module group string, a reconfiguration controller (11), a battery parameter acquisition communication line (12), a positive input and output terminal (13) of the direct-current regulation and control module, a negative input and output terminal (14) of the direct-current regulation and control module, a direct-current regulation and control module group string switch array (15), a direct-current regulation and control module group string monitoring line (16), a direct-current regulation and control module (200), the battery or the battery pack (300), a positive terminal (360) of the battery or the battery pack, a negative terminal (370) of the battery or the battery pack, The reconfigurable direct current regulation and control module series comprises a direct current regulation and control module series positive connecting line (601) and a direct current regulation and control module series negative connecting line (602), wherein a plurality of direct current regulation and control modules (200) of the reconfigurable direct current regulation and control module series (1) are connected through a direct current regulation and control module series switch array (15), the plurality of direct current regulation and control modules (200) are respectively connected with corresponding batteries or battery packs (300), meanwhile, the reconfigurable direct current regulation and control module series (1) is connected into a direct current bus (2), and the direct current bus (2) is connected into a power grid power line (4) through an energy storage converter (3) to form a digital energy storage system of a reconfigurable direct current regulation and control module architecture and a charging and discharging power path; the reconfigurable direct current regulation and control module group string (1) is characterized by comprising: a direct current regulation and control module string reconstruction controller (11), a battery parameter acquisition communication line (12), a direct current regulation and control module string switch array (15) and a direct current regulation and control module string monitoring line (16), wherein a battery or battery pack positive terminal (360) and a battery or battery pack negative terminal (370) of a battery or battery pack (300) are respectively connected with a direct current regulation and control module of a direct current regulation and control module (200) to be connected with a battery or battery pack positive terminal (9) and a direct current regulation and control module to be connected with a battery or battery pack negative terminal (10), the direct current regulation and control module string reconstruction controller (11) is respectively connected with a plurality of direct current regulation and control modules (200) through the direct current regulation and control module string monitoring line (16), and the direct current regulation and control module string reconstruction controller (11) is connected with an upper computer energy storage system management and control system (5) through a system management and control communication bus (6), and forming a digital energy storage monitoring management system for battery charging and discharging energy management and control of the energy storage system and direct current regulation and control module architecture reconstruction.

As shown in fig. 2, the digital energy storage system with the reconfigurable dc regulation and control module architecture is characterized in that a series switch array (15) of the dc regulation and control module group consists of a plurality of switches to form a plurality of switch groups and corresponds to a plurality of dc regulation and control modules (200), wherein the first switch group is provided with 4 switches, the last switch group is provided with 1 switch, and the rest of the switch groups are provided with 5 switches; each switch group corresponds to a corresponding direct current regulation and control module (200), and the connection mode is as follows: the first switch group, namely the 1 st switch (111) of the 1 st switch group is respectively connected with the DC regulation module cathode input/output terminal (14) of the 1 st DC regulation module (201) and the DC regulation module group string cathode connecting line (602), meanwhile, the DC regulation module anode input/output terminal (13) of the 1 st DC regulation module (201) is connected with the DC regulation module group string anode connecting line (601), both ends of the 2 nd switch (112) of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal (14) of the 1 st DC regulation module (201) and the DC regulation module cathode input/output terminal (14) of the 2 nd DC regulation module (202), both ends of the 3 rd switch (113) of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal (14) of the 1 st DC regulation module (201) and the DC regulation module anode input/output terminal (13) of the 2 nd DC regulation module (202), two ends of a 4 th switch (114) of the 1 st switch group are respectively connected with a direct current regulation and control module positive input and output terminal (13) of the 1 st direct current regulation and control module (201) and a direct current regulation and control module positive input and output terminal (13) of the 2 nd direct current regulation and control module (202);

the tail switch group, namely the jth switch group is provided with a switch, and the 1 st switch (1j1) of the jth switch group is respectively connected with the positive input/output terminal (13) of the direct current regulation and control module of the jth direct current regulation and control module (20j) and the positive connecting line (601) of the direct current regulation and control module group string;

the other switch groups are connected in a manner that two ends of a 1 st switch (1i1) of an ith switch group are respectively connected with a direct current regulation and control module positive input and output terminal (13) of an ith direct current regulation and control module (20i) and a direct current regulation and control module group string positive connecting wire (601), two ends of a 2 nd switch (1i2) of the ith switch group are respectively connected with a direct current regulation and control module negative input and output terminal (14) of the ith direct current regulation and control module (20i) and a direct current regulation and control module group string negative connecting wire (602), two ends of a 3 rd switch (1i3) of the ith switch group are respectively connected with a direct current regulation and control module negative input and output terminal (14) of the ith direct current regulation and control module (20i) and a direct current regulation and control module negative input and output terminal (14) of a jth direct current regulation and control module (20j), two ends of a 4 th switch (1i4) of the ith switch group are respectively connected with a direct current regulation and control module negative input and output terminal (14) of the ith direct current regulation and control module (20i) of the jth direct current regulation and control module The direct current regulation and control module positive pole input and output terminal (13) of the regulation and control module (20j), the two ends of the 5 th switch (1i5) of the ith switch group are respectively connected with the direct current regulation and control module positive pole input and output terminal (13) of the ith direct current regulation and control module (20i) and the direct current regulation and control module positive pole input and output terminal (13) of the jth direct current regulation and control module (20 j); thus, a dynamically controlled reconfigurable direct current regulation and control module architecture of the reconfigurable direct current regulation and control module group string (1) is formed.

As shown in fig. 3, in the same reconfigurable dc regulation module group string, the dc regulation modules are connected in series to control the on/off of the switches of the dc regulation module group string switch array (15), and as a specific switch group connection manner of an implementation example, the 1 st switch group, the 3 rd switch (113), the 2 nd switch group, the 4 th switch (124), and the 3 rd switch group, the 4 th switch (134) of the switch group are controlled to be on, and the rest switches are off.

As shown in fig. 4, when a corresponding dc regulation module connected to an abnormally faulty battery or battery pack is found in the same series of reconfigurable dc regulation modules, the connection relationship needs to be reconfigured by the switch group, and the corresponding dc regulation module is isolated and switched out; as an implementation example, when finding that a corresponding battery or battery pack connected to the dc regulation and control module (202) is abnormal, the control switch turns on the 2 nd switch (112) of the 1 st switch group, the 4 th switch (124) of the 2 nd switch group, and the 4 th switch (134) of the 3 rd switch group, and turns off the other switches, and simultaneously adjusts the terminal voltages of other dc regulation and control modules in the dc regulation and control module string, maintains the terminal voltages of the dc regulation and control module (202) to stop, so that the abnormal battery or battery pack is completely isolated from the battery energy storage system, and the abnormal battery or battery pack is online processed in a state where the battery energy storage system is continuously operated.

As shown in fig. 5, in the same reconfigurable dc regulation module group string, the dc regulation modules are divided into two groups and connected in parallel to control on/off of the switches of the dc regulation module group string switch array (15), and as a specific switch group connection manner of an implementation example, the 1 st switch group, the 3 rd switch (113), the 2 nd switch group, the 3 rd switch group, the 1 st switch (131), and the 3 rd switch group, the 4 th switch (134) of the switch group are controlled to be on and off, and the rest switches are off.

As shown in fig. 6, in the same reconfigurable dc regulation module group string, the dc regulation modules are connected in series first and then in parallel to control the on/off of the switch of the dc regulation module group string switch array (15), and as a specific switch group connection mode of an implementation example, the 1 st switch group 2 nd switch (112), the 1 st switch group 4 th switch (114), the 2 nd switch group 4 th switch (124), and the 3 rd switch group 4 th switch (134) of the control switches are closed and turned on, and the rest of the switches are turned off.

As shown in fig. 7, in the same reconfigurable dc regulation module group string, the dc regulation modules are connected in series and in parallel to control the on/off of the switches of the dc regulation module group string switch array (15), and as a specific switch group connection manner of an implementation example, the 1 st switch group 3 rd switch (113), the 2 nd switch group 3 rd switch (123), the 2 nd switch group 5 th switch (125), and the 3 rd switch group 4 th switch (134) of the control switches are closed and on, and the rest switches are opened.

As shown in fig. 8, in the same reconfigurable dc regulation module group string, the dc regulation modules are connected in parallel and then connected in parallel to control the on/off of the switches of the dc regulation module group string switch array (15), and as a specific switch group connection manner of an implementation example, the 1 st switch group 2 nd switch (112), the 1 st switch group 4 th switch (114), the 2 nd switch group 4 th switch (124), the 3 rd switch group 3 rd switch (133), and the 3 rd switch group 5 th switch (135) of the control switches are turned on and off, and the rest of the switches are turned off.

As shown in fig. 9, the digital energy storage system with a reconfigurable dc regulation module architecture is characterized in that the dc regulation module (200) includes a dc regulation module controller (210), a DCDC dc voltage regulation module (220), a module input/output positive switch and protection circuit (230), a module input/output negative switch and protection circuit (240), a DCDC voltage and management control line (250), a dc regulation module multipath communication interface (260), a dc regulation module connected to a positive terminal (9) of a battery or a battery pack, a dc regulation module connected to a negative terminal (10) of the battery or the battery pack, a dc regulation module positive input/output terminal (13), and a dc regulation module negative input/output terminal (14), wherein the dc regulation module controller (210) is connected to the DCDC voltage regulation module (220) and the dc voltage regulation module (220) through the DCDC voltage and the management control line (250), respectively, The module input/output positive switch and protection circuit (230) and the module input/output negative switch and protection circuit (240) control the input/output voltage of the DCDC direct-current voltage regulation module (220) to form a charging/discharging power regulation control path of the battery or the battery pack.

As shown in fig. 10, the digital energy storage system with reconfigurable dc regulation module architecture is characterized in that a battery or a battery pack (300) mainly includes a battery and battery series module (310), a battery parameter sampling and monitoring module (320), a battery parameter sampling sensor and a wire harness (330), a battery or battery pack positive switch and protection circuit (340), a battery or battery pack negative switch and protection circuit (350), a battery or battery pack positive terminal (360), a battery or battery pack negative terminal (370), and a battery or battery pack external communication connection terminal (380); the battery parameter sampling and monitoring module (320) is connected with the battery and the battery series module (310) through a battery parameter sampling sensor and a wiring harness (330) to form a communication link for real-time sampling and monitoring of battery voltage, temperature and current parameters, and is connected with and communicated with the direct current regulation and control module (200) through a battery or battery pack external communication connecting terminal (380); meanwhile, the positive electrode of the battery and battery series module (310) is connected with the positive terminal (360) of the battery or battery pack through the positive switch of the battery or battery pack and the protection circuit (340), and the negative electrode of the battery and battery series module (310) is connected with the negative terminal (370) of the battery or battery pack through the negative switch of the battery or battery pack and the protection circuit (350), so that the battery or battery pack (300) which is replaced in an online plugging mode is formed.

As shown in fig. 11, the digital energy storage system with a reconfigurable dc regulation module architecture is characterized in that a dc regulation module (200) is connected to a positive terminal (9) of a battery or a battery pack through the dc regulation module and is connected to a positive terminal (360) of the battery or the battery pack (300), meanwhile, the dc regulation module (200) is connected to a negative terminal (10) of the battery or the battery pack through the dc regulation module and is connected to a negative terminal (370) of the battery or the battery pack (300), and the dc regulation module (200) is connected to a battery or a battery pack external communication connection terminal (380) of the battery or the battery pack (300) through a dc regulation module multipath communication interface (260); and forming a reconfigurable digital battery unit module with controlled and regulated direct-current voltage.

As shown in fig. 1 and 11, the digital energy storage system with reconfigurable dc regulation module architecture is characterized in that a dc regulation module string reconfiguration controller (11) is connected to each dc regulation module (200) through a battery parameter acquisition communication line (12), and monitors and acquires voltage, temperature and current parameters of each battery cell in a battery or a battery pack (300) in real time through the dc regulation module (200), controls a dc regulation module string switch array (15) according to the electric quantity of the battery or the battery pack and the battery voltage, reconfigures a dc regulation module string (1), and dynamically adjusts the electric quantity of the battery or the battery pack (300) by controlling the output and input voltages of the dc regulation module (200), thereby performing active fast lossless equalization of the battery or the battery pack (300).

As shown in fig. 1, the digital energy storage system with the reconfigurable direct current regulation and control module architecture is characterized in that an upper computer energy storage system management and control system (5) is respectively connected with a direct current regulation and control module group string reconfiguration controller (11) and an energy storage converter (3), and controls the charging and discharging power of a reconfigurable direct current regulation and control module group string (1) by regulating and controlling the power of the energy storage converter (3) according to an energy storage system control strategy and a scheduling power instruction; and a digital energy storage system with a reconfigurable direct current regulation and control module architecture and a control link for electric energy interaction are formed.

The specific embodiments are given above, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various modifications, combinations, formulas and parameters can be designed according to the technical scheme of the utility model without creative efforts, and changes, modifications, substitutions and variations of the embodiments can be made without departing from the principle and conceptual framework of the utility model and still fall into the protection scope of the utility model.

Claims

1. A digital energy storage system with a reconfigurable direct current regulation and control module architecture mainly comprises: the reconfigurable direct current regulation and control module string, the direct current bus, the energy storage converter, the power line of the power grid, the upper computer energy storage system management and control system, the system management and control communication bus, the direct current regulation and control module is connected with the positive terminal of the battery or the battery pack, the direct current regulation and control module is connected with the negative terminal of the battery or the battery pack, the reconfiguration controller of the direct current regulation and control module string, the battery parameter acquisition communication line, the positive input and output terminal of the direct current regulation and control module, the negative input and output terminal of the direct current regulation and control module, the direct current regulation and control module string switch array, the direct current regulation and control module string monitoring line, the direct current regulation and control module, the battery or the battery pack, the positive terminal of the battery or the battery pack, the negative terminal of the battery or the battery pack, the positive connecting line of the direct current regulation and control module string, and the negative connecting line of the direct current regulation and control module string, wherein a plurality of the direct current regulation and control modules of the reconfigurable direct current regulation and control module string are connected through the direct current regulation and control module string switch array, the plurality of direct current regulation and control modules are respectively connected with corresponding batteries or battery packs, meanwhile, the reconfigurable direct current regulation and control module group is connected in series with a direct current bus, and the direct current bus is connected to a power line of a power grid through an energy storage converter to form a digital energy storage system of a reconfigurable direct current regulation and control module framework and a charging and discharging power path; the reconfigurable direct current regulation and control module group string is characterized by comprising: the direct current regulation and control module string reconstruction controller is connected with an energy storage system management and control system of an upper computer through a system management and control communication bus to form a digital energy storage monitoring and control management system with reconfigurable energy storage system battery charging and discharging energy management and direct current regulation and control module frame.

2. The digital energy storage system of the reconfigurable direct current regulation and control module architecture of claim 1, wherein the direct current regulation and control module group string switch array is formed by a plurality of switches to form a plurality of switch groups and corresponds to a plurality of direct current regulation and control modules, wherein the first switch group is provided with 4 switches, the last switch group is provided with 1 switch, and the rest switch groups are provided with 5 switches; each switch group corresponds to a corresponding direct current regulation and control module, and the connection mode is as follows: the first switch group, namely, the 1 st switch of the 1 st switch group is respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module group cathode connecting wire, meanwhile, the DC regulation module anode input/output terminal of the 1 st DC regulation module is connected with the DC regulation module group anode connecting wire, the two ends of the 2 nd switch of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module, the two ends of the 3 rd switch of the 1 st switch group are respectively connected with the DC regulation module cathode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module, the two ends of the 4 th switch of the 1 st switch group are respectively connected with the DC regulation module anode input/output terminal of the 1 st DC regulation module and the DC regulation module anode input/output terminal of the 2 nd DC regulation module An input/output terminal;

the other switch groups are connected in a manner that the 1 st switch of the ith switch group is connected with the positive input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the positive connecting wire of the direct current regulation and control module group string, the 2 nd switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the negative connecting wire of the direct current regulation and control module group string, the 3 rd switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the negative input/output terminal of the direct current regulation and control module of the jth direct current regulation and control module, the 4 th switch of the ith switch group is connected with the negative input/output terminal of the direct current regulation and control module of the ith direct current regulation and control module and the positive input/output terminal of the direct current regulation and control module of the jth direct current regulation and control module, and the 5 th switch of the ith switch group is connected with the positive input/output terminal of the regulation and control module of the ith direct current regulation and control module And a positive input/output terminal of the direct current regulation module of the jth direct current regulation module; thus, a reconfigurable direct current regulation and control module architecture with dynamically controlled reconfigurable direct current regulation and control module group strings is formed.

3. The digital energy storage system of claim 1, wherein the DC regulation module comprises a DC regulation module controller, a DCDC voltage regulation module, a module input/output positive switch and protection circuit, a module input/output negative switch and protection circuit, a DCDC voltage and management line, a DC regulation module multi-path communication interface, a DC regulation module connected to a positive terminal of a battery or a battery pack, a DC regulation module connected to a negative terminal of the battery or the battery pack, a DC regulation module positive input/output terminal, a DC regulation module negative input/output terminal, wherein the DC regulation module controller is connected to the DCDC voltage regulation module, the module input/output positive switch and protection circuit, the module input/output negative switch and protection circuit through the DCDC voltage and management line, and the input and output voltage of the DCDC direct-current voltage regulation and control module is controlled to form a charging and discharging power regulation and control path of the battery or the battery pack.

4. The digital energy storage system with the reconfigurable direct-current regulation and control module architecture according to claim 1, wherein the battery or the battery pack mainly comprises a battery and a battery series module, a battery parameter sampling and monitoring module, a battery parameter sampling sensor and a wire harness, a battery or a battery pack positive switch and protection circuit, a battery or battery pack negative switch and protection circuit, a battery or battery pack positive terminal, a battery or battery pack negative terminal, and a battery or battery pack external communication connection terminal; the battery parameter sampling and monitoring module is connected with a battery and a battery series module through a battery parameter sampling sensor and a wire harness to form a communication link for real-time sampling and monitoring of battery voltage, temperature and current parameters, and is connected with and communicated with the direct current regulation and control module through a battery or a battery pack external communication connecting terminal; meanwhile, the positive electrodes of the battery and the battery series module are connected with the positive terminal of the battery or the battery pack through the positive switch of the battery or the battery pack, and the negative electrodes of the battery and the battery series module are connected with the negative terminal of the battery or the battery pack through the negative switch of the battery or the battery pack and the protection circuit, so that the battery or the battery pack which is replaced in an online plugging mode is formed.

5. The digital energy storage system of claim 1, wherein the dc regulation module string reconfiguration controller is connected to each dc regulation module through a battery parameter acquisition communication line, and is connected to a corresponding battery or battery pack through a dc regulation module, so as to form a communication link for monitoring and acquiring voltage, temperature and current parameters of each battery cell in the battery or battery pack in real time, and meanwhile, the dc regulation module string reconfiguration controller is connected to the dc regulation module string switch array through a battery parameter acquisition communication line, so as to form an active fast lossless equalization regulation and control path for controlling the output and input voltages of the dc regulation module and dynamically regulating the electric quantity of the battery or battery pack.

6. The digital energy storage system with the reconfigurable direct-current regulation and control module architecture according to claim 1, wherein the upper computer energy storage system management and control system is respectively connected with the direct-current regulation and control module group string reconfiguration controller and the energy storage converter to form a digital energy storage system with the reconfigurable direct-current regulation and control module architecture and a control link for electric energy interaction.

7. The digital energy storage system with the reconfigurable direct-current regulation and control module architecture as claimed in claim 1, 3 or 4, wherein the direct-current regulation and control module is connected with the positive terminal of the battery or the battery pack through the direct-current regulation and control module, the positive terminal of the battery or the battery pack is connected with the positive terminal of the battery or the battery pack, the direct-current regulation and control module is connected with the negative terminal of the battery or the battery pack through the direct-current regulation and control module, and the direct-current regulation and control module is connected with the external communication connection terminal of the battery or the battery pack through the multipath communication interface of the direct-current regulation and control module; and forming a reconfigurable digital battery unit module with controlled and regulated direct-current voltage.