CN215120145U - Energy storage power generation device and energy storage power generation system - Google Patents
Energy storage power generation device and energy storage power generation system Download PDFInfo
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- CN215120145U CN215120145U CN202023107910.XU CN202023107910U CN215120145U CN 215120145 U CN215120145 U CN 215120145U CN 202023107910 U CN202023107910 U CN 202023107910U CN 215120145 U CN215120145 U CN 215120145U
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Abstract
The application relates to an energy storage power generation device and an energy storage power generation system, wherein the energy storage power generation device comprises a plurality of energy storage power generation modules; the energy storage power generation module comprises a PCS module and a battery module connected with the PCS module; in the charging process, the PCS module is used for connecting commercial power and controlling the correspondingly connected battery modules to charge; in the discharging process, the PCS module is used for connecting a load and controlling the correspondingly connected battery modules to discharge. So, need not to dispose the battery and converge the cabinet, directly adopt group's string formula connection structure to PCS module and battery module, can be so that every battery module mutually independent and not restricted by the differentiation that is connected with the PCS module, reduced the requirement to battery module, for the PCS lectotype provide bigger flexibility ratio, and, when energy storage power generation facility broke down, only need to the fault point place the unit module maintain can, need not to stop the operation of whole device, time cost has been saved, and work efficiency is improved.
Description
Technical Field
The application relates to the technical field of new energy power generation and energy storage manufacturing, in particular to an energy storage power generation device and an energy storage power generation system.
Background
In the related art, the existing PCS system and battery system are connected in a centralized manner, that is, multiple battery systems are connected in parallel and then merged into a battery combiner cabinet, and the merged battery systems are merged into one path through the battery combiner cabinet and then connected to the dc side of the PCS system. This centralized connection structure has several disadvantages: when the PCS is selected, the corresponding PCS power models are fewer, and only 1 path exists at the direct current side of the PCS system; when the system is applied to a high-power scene, only 1 path of direct current side determines that a battery collecting cabinet and a matched cable are needed to be added for the configuration of a multi-cluster battery system; in the application of a centralized structure, the power of a battery system is passively distributed, so that the difference in the use of batteries cannot be avoided, and the service life of the batteries is further influenced; in addition, when equipment is maintained, the equipment with a single point of failure can affect the operation of the whole system.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application aims to overcome the defects in the prior art and provide an energy storage power generation device and an energy storage power generation system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a first aspect of the present application provides an energy storage and power generation apparatus, which includes a plurality of energy storage and power generation modules; the energy storage and power generation module comprises a PCS module and a battery module connected with the PCS module;
in the charging process, the PCS module is used for connecting commercial power and controlling the correspondingly connected battery modules to charge;
in the discharging process, the PCS module is used for connecting a load and controlling the correspondingly connected battery modules to discharge.
Optionally, the PCS module includes an energy storage converter.
Optionally, the battery module includes a lithium battery energy storage system.
Optionally, the energy storage and power generation module further comprises a connection device; the connection device is used for connecting the PCS module and the battery module.
Optionally, the connection device comprises a cable.
Optionally, the connecting device comprises a copper bar.
Optionally, the types of the battery modules in the energy storage and power generation modules are different.
A second aspect of the present application provides an energy storage and power generation system comprising an energy storage and power generation device as described in the first aspect of the present application.
The technical scheme provided by the application can comprise the following beneficial effects:
in the scheme of this application, energy storage power generation facility can include a plurality of energy storage power generation module, and every energy storage power generation module all includes PCS module and the battery module who is connected with PCS module, so, forms group's string formula connection structure. By adopting the connection structure, the battery confluence cabinet is not required to be configured, and each energy storage power generation module in the energy storage power generation device can be mutually independent, so that each battery module connected with the PCS module can be mutually independent and not limited by differentiation, the requirement on the battery module is reduced, and the energy storage power generation device can comprise a plurality of energy storage power generation modules, so that the power grade of the energy storage power generation device can be determined according to the power of the energy storage power generation modules, and greater flexibility is provided for PCS type selection. In addition, mutual independence between the energy storage power generation modules can make energy storage power generation facility when breaking down, only need to carry out maintenance alone to the unit module at fault point place can, need not to stop the operation of whole device, saved the time cost, improved work efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy storage power generation apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of an energy storage power generation apparatus according to an embodiment of the present application. The embodiment of the present application provides an energy storage and power generation device, and as shown in the figure, the energy storage and power generation device S1 may include n energy storage and power generation modules 11. Each energy-storing and power-generating module 11 may include a PCS module 101 and a battery module 102 connected to the PCS module 101. Wherein n is an integer of 1 or more.
When the energy storage and power generation device S1 is in a charging state, the PCS module 101 in the energy storage and power generation module 11 is used to connect to the utility power and control the correspondingly connected battery module 102 to charge.
When the energy storage and power generation device S1 is in the discharging state, the PCS module 101 in the energy storage and power generation module 11 is used to connect to a load and control the correspondingly connected battery module 102 to discharge.
Among the n energy storage and power generation modules of the energy storage and power generation device S1, the structure between the PCS module and the battery module is a string structure.
In this embodiment, the energy storage and power generation device may include a plurality of energy storage and power generation modules, and each energy storage and power generation module includes a PCS module and a battery module connected to the PCS module, so as to form a string connection structure. By adopting the connection structure, the battery confluence cabinet is not required to be configured, and each energy storage power generation module in the energy storage power generation device can be mutually independent, so that each battery module connected with the PCS module can be mutually independent and not limited by differentiation, the requirement on the battery module is reduced, and the energy storage power generation device can comprise a plurality of energy storage power generation modules, so that the power grade of the energy storage power generation device can be determined according to the power of the energy storage power generation modules, and greater flexibility is provided for PCS type selection. In addition, mutual independence between the energy storage power generation modules can be so that when energy storage power generation device breaks down, only need to carry out maintenance alone to the unit module at fault point place can, need not to stop the operation of whole device, saved the time cost, improved work efficiency.
In specific implementation, the number of the energy storage and power generation modules in the energy storage and power generation device can be set according to actual requirements, and is not limited here.
In some embodiments, the PCS module of the energy storage and power generation module may include an energy storage converter.
In practical application, the type of the energy storage converter can be PCM-50.
In some embodiments, the battery module in the energy storage and power generation module may include a lithium battery energy storage system.
The lithium battery energy storage system can be composed of a lithium ion battery cell and a battery management system, the battery cell is responsible for storing energy, and the battery management system is responsible for ensuring that all the battery cells work within a rated range.
The lithium battery energy storage system can be EBC-730/30-LFO. The lithium battery energy storage system of the type is connected with the PCS module and can be charged and discharged under the control of the PCS module. During specific implementation, the energy storage power generation device can comprise a plurality of energy storage power generation modules, namely a plurality of lithium battery energy storage systems, and the power requirements of the energy storage power generation device can be met by a plurality of lithium battery energy storage systems with the types of EBC-730/30-LFO.
In addition, different from the connection mode of the parallel connection of the traditional multi-cluster battery modules, each battery module in the plurality of energy storage and power generation modules of the energy storage and power generation device is correspondingly connected with one PCS module, so that each battery module can be independently and differentially used. Therefore, in the plurality of energy storage and power generation modules, the types of the battery modules can be the same or different. During implementation, the difference between the battery modules does not need to be reduced, the differentiated battery modules can be used to the greatest extent, the models of the battery modules can be selected according to actual requirements, and the model is not limited here.
Similarly, in practical applications, each PCS module is connected with an independent and differentiated battery module, and during operation, the PCS module can actively distribute the power of the battery modules to match the characteristics of the battery modules to the maximum extent and prolong the service life of the battery modules to the maximum extent.
In some embodiments, as shown in fig. 1, the energy storage and power generation module may further include a connection device 103, and the connection device 103 may be used to connect the PCS module 101 and the battery module 102.
Because a plurality of energy storage power generation modules in the energy storage power generation device are mutually independent, the power grade of the energy storage power generation modules can be determined according to the matched energy storage power generation modules. Correspondingly, when a plurality of energy storage and power generation modules are arranged in the energy storage and power generation device, the power of each energy storage and power generation module is smaller than that of the energy storage and power generation device. Therefore, the connecting equipment used in a matched mode does not need to reach the power level of the energy storage power generation device, the wire diameter of the connecting equipment can be relatively reduced, and the wiring difficulty is reduced.
Where applicable, the connection device may comprise a cable.
In some embodiments, the connection device may further comprise a copper bar.
The present embodiment provides an energy storage and power generation system, which may specifically include an energy storage and power generation device as described in any of the above embodiments.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (8)
1. The energy storage power generation device is characterized by comprising a plurality of energy storage power generation modules; the energy storage and power generation module comprises a PCS module and a battery module connected with the PCS module;
in the charging process, the PCS module is used for connecting commercial power and controlling the correspondingly connected battery modules to charge;
in the discharging process, the PCS module is used for connecting a load and controlling the correspondingly connected battery modules to discharge.
2. The energy-storing and power-generating device of claim 1, wherein the PCS module comprises an energy-storing converter.
3. The energy storage and power generation device of claim 1, wherein the battery module comprises a lithium battery energy storage system.
4. The energy-storing and power-generating apparatus of claim 1, wherein the energy-storing and power-generating module further comprises a connecting device; the connection device is used for connecting the PCS module and the battery module.
5. The energy-storing and power-generating apparatus of claim 4, wherein the connecting device comprises a cable.
6. The energy-storing and power-generating apparatus of claim 4, wherein the connecting device comprises a copper bar.
7. The energy storage and power generation device of claim 1, wherein the battery modules in the plurality of energy storage and power generation modules are different in size.
8. An energy storage and power generation system comprising an energy storage and power generation device as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023107910.XU CN215120145U (en) | 2020-12-22 | 2020-12-22 | Energy storage power generation device and energy storage power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023107910.XU CN215120145U (en) | 2020-12-22 | 2020-12-22 | Energy storage power generation device and energy storage power generation system |
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| CN215120145U true CN215120145U (en) | 2021-12-10 |
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| CN202023107910.XU Active CN215120145U (en) | 2020-12-22 | 2020-12-22 | Energy storage power generation device and energy storage power generation system |
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