Energy storage apparatus, energy storage system, and charging network

Abstract

Provided in the embodiments of the present disclosure are an energy storage apparatus, an energy storage system, and a charging network. The energy storage system comprises a first energy storage compartment, a second energy storage compartment, a control module and a plurality of energy storage conversion systems, wherein the first energy storage compartment comprises a first compartment body and a plurality of battery clusters; the second energy storage compartment comprises a second compartment body and a plurality of battery clusters; the control module is at least used for electrically controlling the plurality of battery clusters in the first compartment body and the plurality of battery clusters in the second compartment body; each battery cluster in the first compartment body and each battery cluster in the second compartment body are correspondingly connected to one energy storage conversion system; and the first compartment body and the second compartment body are arranged in the height direction of the energy storage system, the dimension of the first compartment body and the dimension of the second compartment body in the height direction are both less than the dimension of a standard container in the height direction, the dimension of the first compartment body and the dimension of the second compartment body in the length direction thereof are both consistent with the dimension of the standard container in the length direction, and the dimension of the first compartment body and the dimension of the second compartment body in the width direction thereof are both consistent with the dimension of the standard container in the width direction.

Description

Energy storage device, energy storage system and charging network

[0001] The present disclosure is based on the patent applications with the application numbers PCT / CN2024 / 112473, the filing date of August 15, 2024, PCT / CN2024 / 112498, the filing date of August 15, 2024, PCT / CN2024 / 111558, the filing date of August 12, 2024, PCT / CN2024 / 112387, the filing date of August 15, 2024, 202421984591.6, the filing date of August 15, 2024, PCT / CN2024 / 112558, the filing date of August 15, 2024, PCT / CN2024 / 106588, the filing date of July 19, 2024, PCT / CN2024 / 104575, the filing date of July 09, 2024, PCT / CN2024 / 086624, the filing date of April 08, 2024, PCT / CN2024 / 104413, the filing date of July 09, 2024, PCT / CN2024 / 127187, the filing date of October 24, 2024, and PCT / CN2024 / 086600, the filing date of April 08, 2024, and claims priority to the above patent applications, the contents of the above patent applications are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of battery, in particular to an energy storage device, an energy storage system and a charging network. BACKGROUND

[0003] With the rapid development of science and technology, electric energy has become an indispensable energy in people's production and life. In order to improve the smoothness of electric energy supply and realize the normal operation of production and life, an energy storage device needs to be used. As a device for cyclically storing and releasing electric energy, the energy storage device stores electric energy in the energy storage device through charging or discharging of the energy storage device, or supplies the electric energy stored in the energy storage device to an electric device. The energy storage device is widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation and energy storage power station fields.

[0004] In the development of energy storage devices, in addition to improving the performance of energy storage devices, how to reduce the use cost of energy storage devices is also a problem that cannot be ignored. Therefore, how to reduce the use cost of energy storage devices is a continuous improvement technical problem in energy storage technology. SUMMARY

[0005] Therefore, the embodiments of the present disclosure aim to provide an energy storage device, an energy storage system and a charging network, which can reduce the use cost of the energy storage system.

[0006] To achieve the above-mentioned purpose, the first aspect of the embodiments of the present disclosure provides an energy storage system, comprising:

[0007] a first energy storage bin comprising a first bin body and a plurality of battery clusters;

[0008] a second energy storage bin comprising a second bin body and a plurality of battery clusters;

[0009] a control module configured to at least electrically control the plurality of battery clusters in the first bin body and the plurality of battery clusters in the second bin body;

[0010] a plurality of energy storage converters, each of the plurality of battery clusters in the first bin body and the plurality of battery clusters in the second bin body is connected with one of the energy storage converters;

[0011] wherein the first bin body and the second bin body are arranged along a height direction of the energy storage system, the size of the first bin body and the second bin body along the height direction is smaller than the size of a standard container along the height direction, the size of the first bin body and the second bin body along a length direction is consistent with the size of the standard container along the length direction, and the size of the first bin body and the second bin body along a width direction is consistent with the size of the standard container along the width direction.

[0012] The energy storage system provided by the embodiment of the present disclosure is provided with multiple energy storage converters, and each battery cluster in the first silo and each battery cluster in the second silo is connected to a corresponding energy storage converter. In other words, the power of the energy storage converter can be selected according to customer needs. For example, if a smaller power energy storage converter can meet the needs, a smaller power energy storage converter can be selected, which is conducive to reducing the cost of the energy storage converter and the cost per kilowatt-hour, and can reduce the impact between different battery clusters, thereby improving the reliability of the energy storage system. In addition, by setting the height dimensions of the first silo and the second silo to be smaller than the height dimensions of the standard container, the total weight of the first energy storage silo and the total weight of the second energy storage silo can be reduced, which is conducive to improving the problem of overweight transportation, reducing the transportation cost of the energy storage system, and thus reducing the cost of use of the energy storage system. In addition, by setting the length dimensions of the first silo and the second silo to be consistent with the length dimensions of the standard container, and setting the width dimensions of the first silo and the second silo to be consistent with the width dimensions of the standard container, it is conducive to matching with existing standard container transportation tools and spreaders, reducing the transportation cost of the energy storage device, and thus reducing the cost of use of the energy storage device.

[0013] In some embodiments, the energy storage converter connected to the plurality of battery clusters in the first compartment is disposed outside the first compartment.

[0014] On the one hand, it is convenient for users to select the appropriate power of the energy storage converter according to their needs. On the other hand, it is convenient for the assembly, maintenance and replacement of the energy storage converter. In addition, it is also helpful to reduce the space occupied in the first compartment.

[0015] In some embodiments, the energy storage converter connected to the plurality of battery clusters in the second compartment is disposed outside the second compartment.

[0016] On the one hand, it is convenient for users to select the appropriate power of the energy storage converter according to their needs. On the other hand, it is convenient for the assembly, maintenance and replacement of the energy storage converter. In addition, it is also helpful to reduce the space occupied in the second compartment.

[0017] In some embodiments, the energy storage converter connected to the plurality of battery clusters in the first compartment is disposed in the first compartment.

[0018] In this way, the integration of the first energy storage bin can be made as high as possible, the workload of on-site installation can be reduced, the assembly efficiency can be improved, and thus the cost of use can be reduced.

[0019] In some embodiments, the energy storage converter connected to the plurality of battery clusters in the second compartment is disposed in the second compartment.

[0020] Therefore, the integration of the second energy storage bin can be as high as possible, the workload of on-site installation can be reduced, the assembly efficiency can be improved, and the use cost can be reduced.

[0021] In some embodiments, the second bin body is located at the bottom of the energy storage system, and all the energy storage converters are arranged at the bottom of the second bin body.

[0022] In this embodiment, by arranging all the energy storage converters at the bottom of the second bin body, client wiring and maintenance are facilitated, high-altitude work is reduced, user use is facilitated, and the risk brought by high-altitude work is reduced.

[0023] In some embodiments, the energy storage system further comprises a plurality of connectors, each of the battery clusters in the first bin body and each of the battery clusters in the second bin body is connected to the energy storage converter through one of the connectors.

[0024] In this embodiment, by arranging the connectors, each battery cluster is connected to the energy storage converter through one connector, which facilitates the connection convenience between the battery cluster and the energy storage converter.

[0025] In some embodiments, the second bin body is located at the bottom of the energy storage system, and all the connectors are arranged at the bottom of the second bin body.

[0026] In this embodiment, by arranging all the connectors at the bottom of the second bin body, client wiring and maintenance are facilitated, high-altitude work is reduced, user use is facilitated, and the risk brought by high-altitude work is reduced.

[0027] In some embodiments, each battery cluster comprises a plurality of battery devices, and the plurality of battery devices of each battery cluster are connected in parallel and / or in series.

[0028] That is, the plurality of battery devices of each battery cluster can all be connected in series, all be connected in parallel, or part be connected in series and part be connected in parallel.

[0029] In some embodiments, the energy storage system comprises a thermal management module, and the thermal management module is used at least for managing the temperature of the plurality of battery clusters in the first bin body and the plurality of battery clusters in the second bin body.

[0030] In this embodiment, by arranging the thermal management module, the thermal management module can manage the temperature of the battery cluster, and reduce the risk of temperature runaway of the battery cluster.

[0031] In some embodiments, the first bin body is located at the top of the energy storage system, and the thermal management module is arranged at the top of the first bin body.

[0032] In this embodiment, the heat management module is located at the top of the first bin body, and there is no shelter above the heat management module, which is conducive to heat dissipation of the heat management module, thereby improving the service life of the energy storage device. At the same time, the heat management module blocks the heat radiation at the top, reducing the influence of heat radiation on the battery cluster in the first bin body.

[0033] In some embodiments, the second bin body is located below the first bin body, and the interior of the second bin body has a second energy bin and a second control bin, and a plurality of battery clusters are accommodated in the second energy bin, and the control module is accommodated in the second control bin.

[0034] In this embodiment, by providing a second energy bin and a second control bin in the interior of the second bin body, it is convenient for client wiring and maintenance, reduces high-altitude work, and facilitates user use and reduces the risk brought by high-altitude work.

[0035] In some embodiments, the second control bin includes a first control sub-bin and a second control sub-bin separated from each other, the first control sub-bin is located at the top of the second energy bin, and the second control sub-bin is arranged along the length direction of the second bin body with the second energy bin; the control module includes a first control part and a second control part, the first control part is accommodated in the first control sub-bin, and the second control part is accommodated in the second control sub-bin.

[0036] Among them, the first control part at least includes a master control module, and the second control part includes a total control module.

[0037] In this embodiment, it is conducive to reducing the influence between the first control part and the second control part, thereby improving electrical safety. By providing the first control sub-bin and accommodating at least the master control module in the first control sub-bin, it is conducive to improving the electrical safety of high-voltage power input and output. By providing the second control sub-bin and accommodating the total control module in the second control sub-bin, the power distribution of the auxiliary source incoming line and the electrical safety of each electrical device can be distributed, and the voltage level or AC / DC conversion can be performed.

[0038] In some embodiments, the weight of the first energy storage bin is less than or equal to 45 tons; and / or, the weight of the second energy storage bin is less than or equal to 45 tons.

[0039] In order to make a single first energy storage bin meet the requirements of some countries for transportation limits, the overall weight of the first energy storage bin is controlled to be within 45 tons, and the integration of the first energy storage bin is as high as possible, thereby reducing the workload of on-site installation; at the same time, the energy per unit area is improved, and the customer's cost investment is reduced.

[0040] In some embodiments, the height dimension of the first container body is greater than or equal to 850 mm and less than 2896 mm; and / or, the height dimension of the second container body is greater than or equal to 850 mm and less than 2896 mm.

[0041] It is advantageous to control the total weight of the first container body and its internal components to be within 45 tons, and to maximize the volume and power of the first energy storage container, further reducing the use cost of the first energy storage container.

[0042] In some embodiments, the height dimension of the first container body is greater than or equal to 1300 mm and less than or equal to 2400 mm; and / or, the height dimension of the second container body is greater than or equal to 1300 mm and less than or equal to 2400 mm.

[0043] The embodiments of the present disclosure further provide an energy storage device, comprising:

[0044] a first energy storage container comprising a first container body and a plurality of battery clusters;

[0045] a second energy storage container comprising a second container body and a plurality of battery clusters;

[0046] a control module for electrically controlling the plurality of battery clusters in the first container body and the plurality of battery clusters in the second container body;

[0047] a plurality of connectors, each of the battery clusters in the first container body and each of the battery clusters in the second container body is connected with one of the connectors, and the connectors are used to connect an energy storage converter.

[0048] In some embodiments, the first container body and the second container body are arranged along the height direction of the energy storage system, the dimensions of the first container body and the second container body along the height direction are less than the dimensions of a standard container along the height direction, the dimensions of the first container body and the second container body along the length direction are consistent with the dimensions of the standard container along the length direction, and the dimensions of the first container body and the second container body along the width direction are consistent with the dimensions of the standard container along the width direction.

[0049] The energy storage device provided by the embodiments of the present disclosure is characterized in that a plurality of connectors are arranged, and each battery cluster in the first storage body and each battery cluster in the second storage body is connected with one connector, that is, the energy storage converter can be selectively connected with the connector according to the needs of the customer, so as to improve the flexibility of the energy storage device, match different needs, and improve the versatility. In addition, the power of the energy storage converter can be selected according to different needs, for example, if the energy storage converter with smaller power can meet the needs, the energy storage converter with smaller power can be selected, which is beneficial to reduce the cost of the energy storage converter and reduce the cost of electricity. In addition, the size of the first storage body and the second storage body in the height direction is smaller than the size of the standard container in the height direction, so that the total weight of the first energy storage container and the total weight of the second energy storage container are reduced, which is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage system, thereby reducing the use cost of the energy storage system. In addition, the size of the first storage body and the second storage body in the length direction is consistent with the size of the standard container in the length direction, and the size of the first storage body and the second storage body in the width direction is consistent with the size of the standard container in the width direction, which is beneficial to match the existing standard container transportation tools and lifting tools, thereby reducing the transportation cost of the energy storage device and the use cost of the energy storage device.

[0050] In some embodiments, each of the connectors is connected with one of the energy storage converters.

[0051] In this way, the energy storage converter with smaller power can be selected, which is beneficial to reduce the cost of the energy storage converter and reduce the cost of electricity, and the influence between different battery clusters can be reduced, thereby improving the reliability of the energy storage system.

[0052] In some embodiments, the plurality of connectors are connected in parallel with the energy storage converter.

[0053] That is, the user can also connect the plurality of connectors in parallel with one energy storage converter according to the needs, which is beneficial to reduce the number of energy storage converters and improve the assembly efficiency.

[0054] The embodiments of the present disclosure also provide an energy storage system, which comprises a power conversion device and the energy storage device described above, and the power conversion device is used to electrically connect a power generation device and the energy storage device.

[0055] The embodiments of the present disclosure also provide a charging network, which comprises a charging pile and the energy storage system or the energy storage device described above, and the energy storage device or the energy storage system is used to provide electric energy for the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0056] FIG. 1 is a structural schematic diagram of a charging network provided by some embodiments of the present disclosure;

[0057] Fig. 2 is a structural schematic diagram of an energy storage system according to some embodiments of the present disclosure;

[0058] Fig. 3 is a structural schematic diagram of an energy storage system according to some embodiments of the present disclosure;

[0059] Fig. 4 is a structural schematic diagram of an energy storage system according to some embodiments of the present disclosure;

[0060] Fig. 5 is a structural schematic diagram of a battery device according to some embodiments of the present disclosure;

[0061] Fig. 6 is a connection schematic diagram of a battery cluster and an energy storage converter according to some embodiments of the present disclosure;

[0062] Fig. 7 is a connection schematic diagram of a battery cluster and an energy storage converter according to some embodiments of the present disclosure.

[0063] Legend 1000, charging network; 2000, energy storage system; 100, energy storage device; 1, first energy storage bin; 11, first bin body; 111, ventilation opening; 112, first energy bin; 113, first control bin; 12, thermal management module; 13, control module; 131, master control module; 132, general control module; 2, second energy storage bin; 21, second bin body; 211, second energy bin; 212, second control bin; 2121, first control sub-bin; 2122, second control sub-bin; 3, battery cluster; 4, battery device; 41, box body; 411, first box body; 412, second box body; 42, thermal management component; 43, battery cell; 5, connector; 6, energy storage converter; 200, charging pile; 300, power conversion device; 3000, power generation device. DETAILED DESCRIPTION

[0064] All embodiments and optional embodiments of the present disclosure can be combined with each other to form new technical solutions if not specifically stated.

[0065] All technical features and optional technical features of the present disclosure can be combined with each other to form new technical solutions if not specifically stated.

[0066] With the development of clean energy, more and more devices use electric energy as driving energy, and then power batteries capable of storing more electric energy and capable of multiple reciprocating charging and discharging are rapidly developed, such as lithium ion batteries. Among them, power batteries are not only applied to energy storage power supply systems of hydroelectric, thermal, wind and solar power stations, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields.

[0067] The energy unit may be a secondary battery. A secondary battery refers to an energy unit that can be continuously used by activating active materials by charging after the energy unit is discharged.

[0068] The energy unit can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., which is not limited in the embodiments of the present disclosure.

[0069] An energy cell typically includes an electrode assembly. As an example, the electrode assembly includes a positive electrode, a negative electrode, and a separator, which is positioned between the positive and negative electrodes. During the charge and discharge process of the energy cell, active ions (such as lithium ions) are embedded and released back and forth between the positive and negative electrodes. The separator is positioned between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0070] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0071] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0072] As an example, the positive electrode current collector may be a metal foil, a conductive polymer material, a carbon material or a composite current collector. For example, as the metal foil, a pure metal, an alloy, a surface-treated metal may be used, including but not limited to stainless steel, copper, aluminum, nickel, nickel, titanium or silver. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0073] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.

[0074] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0075] As an example, the negative current collector can employ a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, a pure metal, an alloy, a surface-treated metal, including but not limited to stainless steel, copper, aluminum, nickel, nickel, titanium, or silver, etc. can be employed. The composite current collector can include a high molecular material base layer and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a high molecular material base material (such as a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0076] As an example, the negative electrode sheet can include a negative current collector and a negative active material disposed on at least one surface of the negative current collector.

[0077] In some embodiments, the material of the positive current collector can be aluminum, and the material of the negative current collector can be copper.

[0078] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0079] In some embodiments, the separator is a separator film. The present disclosure does not have a particular limitation on the type of separator film, and any publicly known porous structure separator film having good chemical stability and mechanical stability can be selected.

[0080] As an example, the main material of the separator film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride, and ceramic. The separator film can be a single layer film or a multi-layer composite film, and is not particularly limited. When the separator film is a multi-layer composite film, the materials of the respective layers can be the same or different, and are not particularly limited. The separator can be a separate component located between the positive and negative electrodes, or can be attached to the surface of the positive and negative electrodes. An inorganic particle coating layer, an organic particle coating layer, or an organic / inorganic composite coating layer can also be applied to the surface of the separator film.

[0081] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and separate the positive and negative electrodes.

[0082] In some embodiments, the energy unit further includes an electrolyte that functions to conduct ions between the positive and negative electrodes. The present disclosure does not have a particular limitation on the type of electrolyte, and can be selected as needed. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0083] The electrode assembly can have a wound structure, a stacked structure, or a hybrid structure of the wound and stacked structures.

[0084] In some embodiments, the electrode assembly is in a wound structure. The positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0085] In some embodiments, the electrode assembly is in a stacked structure.

[0086] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be provided, and the plurality of positive electrode sheets and the plurality of negative electrode sheets are alternately stacked.

[0087] As an example, a plurality of positive electrode sheets can be provided, and the negative electrode sheet is folded to form a plurality of folded segments which are stacked. One positive electrode sheet is clamped between adjacent folded segments.

[0088] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded segments which are stacked.

[0089] As an example, a plurality of separators can be provided, and each of the plurality of separators is provided between any adjacent positive electrode sheet or negative electrode sheet.

[0090] As an example, the separators can be continuously provided, and are provided between any adjacent positive electrode sheet or negative electrode sheet by folding or winding.

[0091] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape.

[0092] In some embodiments, the electrode assembly is provided with a tab. The tab can guide current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0093] In some embodiments, the energy unit can include a housing. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc. In some embodiments, the housing can be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly. The sealing bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, the housing is used to encapsulate the electrode assembly and the electrolyte, etc.

[0094] As an example, the energy unit can be a cylindrical energy unit, a prismatic energy unit, a pouch energy unit, or an energy unit of other shapes. The prismatic energy unit includes a square shell energy unit, a blade-shaped energy unit, a polygonal battery, such as a hexagonal battery, etc. The present disclosure is not particularly limited.

[0095] In some embodiments, the housing includes an end cap and a shell. The shell is provided with an opening, and the end cap is provided on the opening. The shell can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0096] In some embodiments, at least one electrode terminal is arranged on the shell, and the electrode terminal is electrically connected with the tab. The electrode terminal can be directly connected with the tab or indirectly connected with the tab through the current collecting member. The electrode terminal can be arranged on the end cover or the shell.

[0097] In some embodiments, the energy storage device includes an energy storage cabinet or the like.

[0098] The power station has higher and higher requirements for the area energy density of the energy storage device. Therefore, in order to improve the power, the total weight of the bin body and the components in the bin body will also increase accordingly. The energy storage cabinet needs to be transported from the production place to the use place by land and / or sea transportation. There is a transportation weight limit for land and sea transportation, so there is a contradiction between the improvement of the energy density and the weight of the energy storage cabinet. In the development of the energy storage device, in addition to improving the performance of the energy storage device, how to reduce the use cost of the energy storage device is also a problem that cannot be ignored. Therefore, how to reduce the use cost of the energy storage device is a continuous improvement technical problem in the energy storage technology.

[0099] Therefore, the embodiments of the present disclosure provide a new technical solution, and the technical solution described in the embodiments of the present disclosure is suitable for an energy storage device, an energy storage system including the energy storage device, and a charging network.

[0100] The energy storage device can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system. The energy storage device can store electric energy as needed and output the electric energy at an appropriate time. For example, the energy storage device can store electric energy during a low electricity consumption period and provide electric energy for related users or electric equipment during a high electricity consumption period. The energy storage system provided in the embodiments of the present disclosure can be any power system that needs to use an energy storage device.

[0101] Please refer to FIG. 1, which is a structural schematic diagram of a charging network 1000 provided by an embodiment of the present disclosure. The embodiment of the present disclosure provides a charging network 1000, which includes a charging pile 200, and the charging pile 200 is used to charge electric equipment. The charging network 1000 can also include an energy storage device 100 or an energy storage system 2000, the energy storage device 100 is electrically connected with the charging pile 200, and the energy storage device 100 is used to provide electric energy for the charging pile 200.

[0102] It should be noted that the charging pile 200 is electrically connected to the energy unit in the energy storage device 100 through a cable, and the energy unit can provide the stored electrical energy to the charging pile 200. The charging pile 200 has one or more connectors 5 for connecting with an electrical equipment (such as a vehicle) so as to charge the electrical equipment. The charging network 1000 applies the energy storage device 100, which can effectively improve the reliability of the charging network 1000 and also helps to improve the flexibility of the charging network 1000 in deployment.

[0103] The energy storage device 100 can be located inside the charging pile 200 (for example, a charging and storage integrated machine) or outside the charging pile 200.

[0104] In one charging network 1000, the charging pile 200 can be one, and the energy storage device 100 provides electrical energy for the charging pile 200. The charging pile 200 can also be multiple, and the energy storage device 100 provides electrical energy for multiple charging piles 200.

[0105] The energy storage device 100 can include multiple housings and multiple energy units, and the multiple energy units are contained in at least one housing. The energy unit is electrically connected to the charging pile 200 so as to provide electrical energy for the charging pile 200.

[0106] As an example, as shown in FIG. 1, the charging network 1000 includes one energy storage device 100 and two charging piles 200, and one energy storage device 100 provides electrical energy for two charging piles 200.

[0107] Please refer to FIG. 2, which is a structural schematic diagram of an energy storage system 2000 provided by an embodiment of the present disclosure. The embodiment of the present disclosure provides an energy storage system 2000. The energy storage system 2000 includes a power conversion device 300, which can be electrically connected to a power generation device 3000 and an energy storage device 100 to convert the electrical power provided by the power generation device 3000. The power conversion device 300 guides the electrical energy provided by the power generation device 3000 into the energy storage device 100 after power conversion.

[0108] The power conversion device 300 is used to connect between the power generation device 3000 and the energy storage device 100. The power generation device 3000 is used to generate electrical energy, and the power generation device 3000 is used to store the generated electrical energy into the energy storage device 100 through the power conversion device 300. The energy storage system 2000 applies the energy storage device 100, which can effectively improve the operation reliability of the energy storage system 2000. In specific implementation, the power generation equipment can be a solar panel, a water power generation equipment, a fire power generation equipment, etc. The specific type of the power generation equipment is not limited in the present disclosure.

[0109] As an example, as shown in FIG. 2, the energy storage system 2000 includes the energy storage device 100 and the power conversion device 300, and two power generation devices 3000 respectively transmit generated electric energy to the power conversion device 300, and the electric energy is guided into the energy storage device 100 for storage through the power conversion device 300.

[0110] Referring to FIGS. 3-7, some embodiments of the present disclosure provide an energy storage system 2000, which includes a first energy storage bin 1, a second energy storage bin 2, a control module 13, and a plurality of energy storage converters 6. The first energy storage bin 1 includes a first bin body 11 and a plurality of battery clusters 3. The second energy storage bin 2 includes a second bin body 21 and a plurality of battery clusters 3. The control module 13 is used at least for electrically controlling the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21. Each of the battery clusters 3 in the first bin body 11 and each of the battery clusters 3 in the second bin body 21 is connected with one energy storage converter 6. The first bin body 11 and the second bin body 21 are arranged along a height direction of the energy storage system 2000, the size of the first bin body 11 and the second bin body 21 along the height direction is smaller than the size of a standard container along the height direction, the size of the first bin body 11 and the second bin body 21 along a length direction thereof is consistent with the size of the standard container along the length direction, and the size of the first bin body 11 and the second bin body 21 along a width direction thereof is consistent with the size of the standard container along the width direction.

[0111] For ease of description, the first energy storage bin 1 and the second energy storage bin 2 are collectively referred to as an energy storage bin, and the first bin body 11 and the second bin body 21 are collectively referred to as a bin body.

[0112] The bin body can be a cabinet body or a container, and the bin body has a cavity inside which can accommodate other components of the energy storage device 100. The bin body can have a hexahedral structure.

[0113] The bin body usually has a cuboid structure, the length direction and the width direction of the bin body are parallel to the horizontal plane, and the length direction of the bin body is parallel to the longest side of the cuboid structure of the bin body. The height direction of the bin body is perpendicular to the ground. As an example, as shown in FIG. 3, the length direction of the bin body is represented by X, the width direction of the bin body is represented by Y, and the height direction of the bin body is represented by Z.

[0114] As an example, the number of bin bodies is a plurality, and the plurality of bin bodies are arranged along the height direction of the energy storage device 100.

[0115] Referring to FIGS. 3 and 4, the energy storage bin of the energy storage system 2000 can be any number of two or more, for example, the energy storage system 2000 includes two energy storage bins, and the two energy storage bins are arranged in a stacked manner along the height direction; for another example, the energy storage system 2000 includes three energy storage bins, and the three energy storage bins are arranged in a stacked manner along the height direction.

[0116] The energy storage system 2000 further comprises a plurality of battery clusters 3 for providing or storing electrical energy.

[0117] Here, the battery cluster 3 comprises a plurality of energy units, which can be battery cells 43 or battery apparatuses 4 formed by electrically connecting a plurality of battery cells 43.

[0118] Referring to FIG. 4, the plurality of energy units can form a plurality of layers and / or a plurality of columns of battery apparatuses 4, each row or column of battery apparatuses 4 comprising a plurality of energy units.

[0119] As an example, a plurality of battery apparatuses 4 are connected in parallel and / or in series to form a battery cluster 3.

[0120] The battery apparatus 4 referred to by embodiments of the present disclosure can comprise one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can comprise a plurality of battery cells 43 connected in series, in parallel, or in a hybrid connection by busbar components.

[0121] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 43.

[0122] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells 43 into a separate module. As an example, the battery module can be formed by bundling a plurality of battery cells 43 by a cable tie.

[0123] In some embodiments, the battery apparatus 4 can be a battery pack comprising a housing 41 and one or more battery cell assemblies housed in the housing 41.

[0124] As an example, the battery cell assembly can be a battery module, which can be housed in the housing 41 by fixing the battery module in the housing 41.

[0125] As an example, the battery cell assembly can also be housed in the housing 41 by directly fixing a plurality of battery cells 43 in the housing 41.

[0126] As an example, referring to FIG. 18, the housing 41 can comprise a first housing 411 and a second housing 412. The first housing 411 and the second housing 412 are fastened so that an enclosed space is formed inside the housing 41 to accommodate the battery cell assembly. Here, enclosed means covered or closed, which can be sealed or unsealed. The first housing 411 can be a top cover or a bottom plate.

[0127] As an example, the box 41 can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame, respectively, so that an enclosed space is formed inside the box 41 to accommodate the battery cell assembly.

[0128] Referring to FIG. 3, the dimension a of the bin along the length direction is the distance between the two ends of the bin along the length direction; the dimension b of the bin along the width direction is the distance between the two ends of the bin along the width direction; and the dimension h of the bin along the height direction is the distance between the two ends of the bin along the height direction. The dimensions a, b, and h are the maximum dimensions of the outer contour of the bin in the corresponding direction. The bin can include eight corner pieces and six bin walls, the eight corner pieces being located at the eight corners of the cuboid structure of the bin, the eight corner pieces respectively protruding from the bin walls of the bin, the total span of the two corner pieces arranged along the height direction being the height of the bin, the total span of the two corner pieces arranged along the length direction being the length of the bin, and the total span of the two corner pieces arranged along the width direction being the width of the bin. When calculating the dimensions of the bin, the pipelines and cables connected to the bin and located outside the bin can not be included in the dimensions of the bin.

[0129] The standard container can be a standard container in a transportation process, such as a 10-foot, 20-foot, 30-foot, 40-foot, or 45-foot container, which meets the corresponding standards, and has a corresponding dimension in length, width, and height, respectively. The standard container can refer to GB / T1413-2023 Series 1 Container Classification, Dimensions, and Rated Mass.

[0130] The 10-foot container can include: a length dimension of 2991 mm, with a tolerance of 0 mm-5 mm; a width dimension of 2438 mm, with a tolerance of 0 mm-5 mm; and a height dimension of 2438 mm or less than 2438 mm; with a tolerance of 0 mm-5 mm.

[0131] The 20-foot container can include: a length dimension of 6058 mm, with a tolerance of 0 mm-6 mm; a width dimension of 2438 mm, with a tolerance of 0 mm-5 mm; and a height dimension of 2896 mm, 2591 mm, or not greater than 2438 mm; with a tolerance of 0 mm-5 mm.

[0132] The 30-foot container can include: a length dimension of 9125 mm, with a tolerance of 0 mm-10 mm; a width dimension of 2438 mm, with a tolerance of 0 mm-5 mm; and a height dimension of 2896 mm, 2591 mm, or not greater than 2438 mm; with a tolerance of 0 mm-5 mm.

[0133] The 40 feet can include: a length direction size of 12192mm, a tolerance of 0mm-10mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2896mm, 2591mm or no more than 2438mm; a tolerance of 0mm-5mm.

[0134] The 45 feet can include: a length direction size of 13716mm, a tolerance of 0mm-10mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2591mm or 2896mm; a tolerance of 0mm-5mm.

[0135] In the embodiments of the present disclosure, for the first and second storage bodies 11 and 21 of various sizes, the sizes within ±1%, ±2%, ±3%, ±4%, ±5% of the sizes can be considered as sizes within the tolerance range.

[0136] The size of the first and second storage bodies 11 and 21 in the height direction is set to be smaller than the size of a standard container in the height direction. By reducing the size of the first and second storage bodies 11 and 21, the total weight of the first storage body 11 loaded with the battery cluster 3 and other components and the total weight of the second storage body 21 loaded with the battery cluster 3 and other components can be reduced, which is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage cabinet.

[0137] In some embodiments, the standard container is a 20 feet standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0138] In some embodiments, the energy storage system 2000 further includes a connecting mechanism (not shown in the figure) configured to be able to connect the first and second storage bodies 11 and 21. The connecting mechanism includes a support arranged between the first and second storage bodies 11 and 21 in the height direction of the energy storage system 2000.

[0139] By connecting the first and second storage bodies 11 and 21 through the connecting mechanism, the stacking of the first and second storage bodies 11 and 21 can be more stable.

[0140] In some embodiments, referring to FIGS. 3-4, the length direction size of the first and second storage bodies 11 and 21 is consistent with the length direction size of the standard container, and the width direction size of the first and second storage bodies 11 and 21 is consistent with the width direction size of the standard container.

[0141] In the embodiment, by setting the length direction size of the first bin body 11 and the second bin body 21 to be consistent with the length direction size of the standard container, and setting the width direction size of the first bin body 11 and the second bin body 21 to be consistent with the width direction size of the standard container, the first bin body 11 and the second bin body 21 are matched with the existing standard container transportation tools and lifting tools, the transportation cost of the energy storage cabinet is reduced, and the use cost of the energy storage cabinet is reduced.

[0142] In some embodiments, referring to FIG. 4, the energy storage system 2000 includes a control module 13, which is used at least for electrically controlling the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21.

[0143] In the embodiment, by setting the control module 13, the control module 13 can control the electric energy input or output of the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21, and realize electrical control of the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21.

[0144] The energy storage converter 6 (PCS, Power Conversion System) can control the charging and discharging process of the battery, convert AC and DC, and directly power the AC load in the absence of a power grid. The PCS is composed of a DC / AC bidirectional converter, a control unit, etc. The PCS controller receives the background control instruction through communication, controls the charging or discharging of the battery according to the sign and size of the power instruction, and realizes the adjustment of the active power and the reactive power of the power grid. The PCS controller communicates with the BMS through the CAN interface to obtain the battery pack state information, and can realize protective charging and discharging of the battery.

[0145] In the related art, different battery clusters 3 of the energy storage system 2000 are connected in parallel to one PCS. When the energy of the energy storage system 2000 is large, the power of the PCS matched therewith also needs to be increased. However, the power of the current mainstream PCS is low, which cannot match the demand for large power, and the larger the power is, the higher the cost per degree of electricity is. On the other hand, since each battery cluster 3 is connected in parallel, but the consistency between the battery monomers 43 is not perfect, there will be a circulating current between each battery device 4, and the more the parallel connection is, the greater the probability of the circulating current and the influence between each other will be, and the greater the influence on the service life of the energy storage system 2000 will be. In addition, when a large number of battery clusters 3 are connected in parallel to the DC input end of a centralized PCS, when a short circuit occurs at the input end of the PCS, each battery cluster 3 bears the highest voltage accumulated by all the battery clusters 3, and the short-circuit current is large, which has a high requirement on the overcurrent capacity of the busbar.

[0146] Referring to FIG. 6, by connecting each battery cluster 3 in the first warehouse body 11 and each battery cluster 3 in the second warehouse body 21 with a corresponding energy storage converter 6, the power of the energy storage converter 6 can be selected according to the needs of the customer. For example, if a smaller power energy storage converter 6 can meet the needs, a smaller power energy storage converter 6 can be selected, which is conducive to reducing the procurement cost of the energy storage converter 6 and reducing the cost of electricity. In addition, it can also reduce the circulating current between different battery clusters 3. In addition, when the PCS input end is short-circuited, it is conducive to reducing the highest voltage borne by each battery cluster 3 and reducing the short-circuit current. When a single battery cluster 3 outputs or a small number of battery clusters 3 are connected in parallel, it is conducive to reducing the requirements for busbars or adapter bars.

[0147] The energy storage system 2000 provided by the embodiments of the present disclosure is provided by connecting each battery cluster 3 in the first warehouse body 11 and each battery cluster 3 in the second warehouse body 21 with a corresponding energy storage converter 6, that is, the power of the energy storage converter 6 can be selected according to the needs of the customer. For example, if a smaller power energy storage converter 6 can meet the needs, a smaller power energy storage converter 6 can be selected, which is conducive to reducing the cost of the energy storage converter 6 and reducing the cost of electricity, and can reduce the influence between different battery clusters 3, thereby improving the reliability of the energy storage system 2000. In addition, by setting the size of the first warehouse body 11 and the second warehouse body 21 along the height direction to be smaller than the size of the standard container along the height direction, the total weight of the first energy storage warehouse 1 and the total weight of the second energy storage warehouse 2 can be reduced, which is conducive to improving the problem of overweight transportation and reducing the transportation cost of the energy storage system 2000, thereby reducing the use cost of the energy storage system 2000. In addition, by setting the size of the first warehouse body 11 and the second warehouse body 21 along the length direction to be consistent with the size of the standard container along the length direction, and setting the size of the first warehouse body 11 and the second warehouse body 21 along the width direction to be consistent with the size of the standard container along the width direction, it is conducive to matching the existing standard container transportation tools and lifting tools, thereby reducing the transportation cost of the energy storage device 100, thereby reducing the use cost of the energy storage device 100.

[0148] It should be noted that the specific setting position of the energy storage converter 6 is not limited here.

[0149] In some embodiments, the energy storage converter 6 connected to the plurality of battery clusters 3 in the first warehouse body 11 is arranged outside the first warehouse body 11.

[0150] On the one hand, it is convenient for the user to select the appropriate power of the energy storage converter 6 according to the needs, and on the other hand, it is convenient for the assembly, maintenance and replacement of the energy storage converter 6, and in addition, it is also conducive to reducing the space occupied in the first warehouse body 11.

[0151] In some embodiments, the energy storage converters 6 connected with the plurality of battery clusters 3 in the second cabinet 21 are arranged outside the second cabinet 21.

[0152] On the one hand, it is convenient for users to select appropriate power of the energy storage converters 6 according to requirements, and on the other hand, it is convenient for assembly, maintenance and replacement of the energy storage converters 6, and in addition, it is also conducive to reducing the space occupied in the second cabinet 21.

[0153] In some embodiments, the energy storage converters 6 connected with the plurality of battery clusters 3 in the first cabinet 11 are arranged in the first cabinet 11.

[0154] In this way, the integration of the first energy storage cabinet 1 can be as high as possible, the workload of on-site installation is reduced, the assembly efficiency is improved, and thus the use cost is reduced.

[0155] In some embodiments, the energy storage converters 6 connected with the plurality of battery clusters 3 in the second cabinet 21 are arranged in the second cabinet 21.

[0156] In this way, the integration of the second energy storage cabinet 2 can be as high as possible, the workload of on-site installation is reduced, the assembly efficiency is improved, and thus the use cost is reduced.

[0157] In some embodiments, referring to FIG. 4, the second cabinet 21 is located at the bottom of the energy storage system 2000, and all the energy storage converters 6 are arranged at the bottom of the second cabinet 21.

[0158] The second cabinet 21 is located at the bottom of the energy storage system 2000, that is, the first cabinet 11 is located above the second cabinet 21.

[0159] All the energy storage converters 6 are arranged at the bottom of the second cabinet 21, that is, the energy storage converters 6 connected with the plurality of battery clusters 3 in the second cabinet 21 are arranged at the bottom of the second cabinet 21, and the energy storage converters 6 connected with the plurality of battery clusters 3 in the first cabinet 11 are also arranged at the bottom of the second cabinet 21.

[0160] Of course, in embodiments that further include other energy storage cabinets, the energy storage converters 6 connected with the plurality of battery clusters 3 in the other energy storage cabinets are also arranged at the bottom of the second cabinet 21.

[0161] In this embodiment, by arranging all the energy storage converters 6 at the bottom of the second cabinet 21, it is convenient for client wiring and maintenance, reduces high-altitude work, facilitates user use and reduces risks brought by high-altitude work.

[0162] In some embodiments, please refer to FIG. 4, the energy storage system 2000 further comprises a plurality of connectors 5, each of the battery clusters 3 in the first bin body 11 and each of the battery clusters 3 in the second bin body 21 is connected to the energy storage converter 6 through one connector 5.

[0163] Here, the connector 5 can be an adapter, that is, the battery cluster 3 is first connected to the connector 5, and the connector 5 is then connected to the energy storage converter 6 to realize one-to-one connection between the battery cluster 3 and the energy storage converter 6.

[0164] In this embodiment, by arranging the connector 5, each battery cluster 3 is connected to the energy storage converter 6 through one connector 5, which is conducive to improving the connection convenience between the battery cluster 3 and the energy storage converter 6.

[0165] In some embodiments, please refer to FIG. 4, the second bin body 21 is located at the bottom of the energy storage system 2000, and all the connectors 5 are arranged at the bottom of the second bin body 21.

[0166] All the connectors 5 are arranged at the bottom of the second bin body 21, that is, the connectors 5 connected to the plurality of battery clusters 3 in the second bin body 21 are arranged at the bottom of the second bin body 21, and the connectors 5 connected to the plurality of battery clusters 3 in the first bin body 11 are also arranged at the bottom of the second bin body 21.

[0167] Of course, in embodiments that further include other energy storage bins, the connectors 5 connected to the plurality of battery clusters 3 in the other energy storage bins are also arranged at the bottom of the second bin body 21.

[0168] In this embodiment, by arranging all the connectors 5 at the bottom of the second bin body 21, it is convenient for the client to wire and maintain, reduces the high-altitude operation, facilitates the user to use and reduces the risk brought by the high-altitude operation.

[0169] Exemplarily, each battery cluster 3 comprises a plurality of battery devices 4, and the plurality of battery devices 4 of each battery cluster 3 are connected in parallel and / or in series.

[0170] That is, the plurality of battery devices 4 of each battery cluster 3 can all be connected in series, all be connected in parallel, or part be connected in series and part be connected in parallel.

[0171] In some embodiments, please refer to FIG. 4, the energy storage system 2000 comprises a thermal management module 12, and the thermal management module 12 is used at least for managing the temperature of the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21.

[0172] In this embodiment, by arranging the thermal management module 12, the thermal management module 12 can manage the temperature of the battery cluster 3 and reduce the risk of temperature runaway of the battery cluster 3. That is, the plurality of battery devices 4 of each battery cluster 3 can all be connected in series, all be connected in parallel, or part be connected in series and part be connected in parallel.

[0171] In some embodiments, please refer to FIG. 4, the energy storage system 2000 comprises a thermal management module 12, and the thermal management module 12 is used at least for managing the temperature of the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21.

[0172] In this embodiment, by arranging the thermal management module 12, the thermal management module 12 can manage the temperature of the battery cluster 3 and reduce the risk of temperature runaway of the battery cluster 3.

[0173] In addition, the energy storage system 2000 can share one thermal management module 12 to form a complete system, which is conducive to saving space.

[0174] In some embodiments, referring to FIGS. 3 and 4, the first cabinet 11 is located at the top of the energy storage system 2000, and the thermal management module 12 is arranged at the top of the first cabinet 11.

[0175] In this embodiment, the thermal management module 12 is located at the top of the first cabinet 11, and there is no shelter above the thermal management module 12, which is conducive to heat dissipation of the thermal management module 12, thereby improving the service life of the energy storage device 100. At the same time, the thermal management module 12 blocks the heat radiation at the top, reducing the influence of the heat radiation on the battery cluster 3 in the first cabinet 11.

[0176] Here, the top wall and / or the side wall of the first cabinet 11 are provided with a ventilation opening 111, which can be an entire opening of the top wall of the first cabinet 11 to form a ventilation opening 111. It can also be that part of the top wall of the first cabinet 11 is opened to form a ventilation opening 111; for example, the top wall of the first cabinet 11 is provided with an opening along one side in the length direction, so that part of the top wall of the first cabinet 11 forms a ventilation opening 111.

[0177] As an example, the ventilation opening 111 of the top wall of the first cabinet 11 can be used for exhaust air, and the ventilation opening 111 of the side wall of the first cabinet 11 can be used for intake air.

[0178] In this embodiment, the ventilation opening 111 is located at the top wall and / or the side wall of the first cabinet 11, which is conducive to heat dissipation of the thermal management module 12, so that the thermal management module 12 can have more heat dissipation channels, thereby improving the temperature control effect of the thermal management module 12.

[0179] In some embodiments, referring to FIGS. 3 and 4, the second cabinet 21 is located below the first cabinet 11, and the inside of the second cabinet 21 has a second energy cabinet 211 and a second control cabinet 212, and a plurality of battery clusters 3 are accommodated in the second energy cabinet 211, and the control module 13 is accommodated in the second control cabinet 212.

[0180] In this embodiment, by arranging the second energy cabinet 211 and the second control cabinet 212 in the inside of the second cabinet 21, it is conducive to client wiring and maintenance, reduces high-altitude work, and facilitates user use and reduces the risk brought by high-altitude work.

[0181] In some embodiments, the energy storage system 2000 can share one control module 13 to form a complete system, which is conducive to saving space.

[0182] In some embodiments, please refer to FIG. 3 and FIG. 4, the second control bin 212 comprises a first control sub-bin 2121 and a second control sub-bin 2122 which are separated from each other, the first control sub-bin 2121 is located on the top of the second energy bin 211, and the second control sub-bin 2122 is arranged along the length direction of the second bin body 21 with the second energy bin 211. The control module 13 comprises a first control part and a second control part, the first control part is accommodated in the first control sub-bin 2121, and the second control part is accommodated in the second control sub-bin 2122. The first control part at least comprises a main control module 131, and the second control part comprises a general control module 132.

[0183] Exemplarily, by setting the second control bin 212 to comprise the first control sub-bin 2121 and the second control sub-bin 2122 which are separated from each other, and accommodating the first control part in the first control sub-bin 2121 and the second control part in the second control sub-bin 2122, the influence between the first control part and the second control part can be reduced, thereby improving the electrical safety.

[0184] In some embodiments, please refer to FIG. 4, the first control part at least comprises the main control module 131.

[0185] The main control module 131 is used to control the input and output of high-voltage electrical energy of the energy unit.

[0186] In this embodiment, by setting the first control sub-bin 2121 and accommodating the main control module 131 in the first control sub-bin 2121, the electrical safety of the input and output of high-voltage electrical energy can be improved.

[0187] In some embodiments, please refer to FIG. 4, the second control part comprises the general control module 132.

[0188] Exemplarily, the second control part can further comprise at least one of a power distribution module, the general control module 132 and a fire control module 13.

[0189] In this embodiment, by setting the second control sub-bin 2122 and accommodating the general control module 132 in the second control sub-bin 2122, the electrical safety of each electrical device and the conversion of voltage level or AC / DC can be realized.

[0190] Exemplarily, please refer to FIG. 4, the first control part comprises the main control module 131, and the second control part comprises the general control module 132. The main control module 131 of the first control part can be connected with the second control part through the power line and the communication line to realize the power supply and signal communication.

[0191] In some embodiments, the weight of the first energy storage bin 1 is less than or equal to 45 tons.

[0192] The weight of the first energy storage bin 1 includes the weight of the first bin body 11, the plurality of battery clusters 3, connecting pipelines, a thermal management module 12, and the like.

[0193] Here, the first energy storage bin 1 refers to a bin body that can be transported and hoisted individually.

[0194] Exemplarily, the weight of the first energy storage bin 1 can be a point value of any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 45 tons, or a point value between any two of them.

[0195] In the process of hoisting the first energy storage bin 1, the hoisting of the relevant hoisting device is facilitated, and the transfer work of the first energy storage bin 1 is facilitated.

[0196] In order to make a single first energy storage bin 1 meet the requirements of some countries for transportation limits, the overall weight of the first energy storage bin 1 is controlled to be within 45 tons, and the integration of the first energy storage bin 1 is as high as possible, thereby reducing the workload of on-site installation; at the same time, the energy per unit area is improved, and the cost investment of the customer is reduced.

[0197] In some embodiments, the weight of the second energy storage bin 2 is less than or equal to 45 tons.

[0198] The weight of the second energy storage bin 2 includes the weight of the second bin body 21, the plurality of battery clusters 3, connecting pipelines, a control module 13, and the like.

[0199] Here, the second energy storage bin 2 refers to a bin body that can be transported and hoisted individually.

[0200] Exemplarily, the weight of the second energy storage bin 2 can be a point value of any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 45 tons, or a point value between any two of them.

[0201] In the process of hoisting the second energy storage bin 2, the hoisting of the relevant hoisting device is facilitated, and the transfer work of the second energy storage bin 2 is facilitated.

[0202] In order to make a single second energy storage bin 2 meet the requirements of some countries for transportation limits, the overall weight of the second energy storage bin 2 is controlled to be within 45 tons, and the integration of the second energy storage bin 2 is as high as possible, thereby reducing the workload of on-site installation; at the same time, the energy per unit area is improved, and the cost investment of the customer is reduced.

[0203] In some embodiments, the height dimension of the first bin body 11 is greater than or equal to 850 mm and less than 2896 mm.

[0204] Exemplarily, the height dimension of the first bin body 11 can be any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, 2895mm or any point value between any two of them.

[0205] In this embodiment, by setting the height dimension of the first bin body 11 to 850mm≤h<2896mm, the total weight of the first bin body 11 and its internal components is controlled to be within 45 tons, and the volume and the power of the first energy storage bin 1 can be increased as much as possible, and the use cost of the first energy storage bin 1 is further reduced.

[0206] In some embodiments, the height dimension of the first bin body 11 is greater than or equal to 1300mm and less than or equal to 2400mm.

[0207] Exemplarily, the height dimension of the first bin body 11 can be any one of 1300mm, 1350mm, 1400mm, 1450mm, 1500mm, 1550mm, 1600mm, 1650mm, 1700mm, 1750mm, 1800mm, 1850mm, 1900mm, 1950mm, 2000mm, 2050mm, 2100mm, 2150mm, 2200mm, 2250mm, 2300mm, 2350mm, 2400mm or any point value between any two of them.

[0208] Further, it is further beneficial to increase the volume and the power of the energy storage cabinet, and further reduce the use cost of the energy storage cabinet.

[0209] It should be noted that the height dimension of the second bin body 21 is the same as that of the first bin body 11, which will not be repeated here. In addition, the height dimension of the second bin body 21 can be the same as or different from that of the first bin body 11, which is not limited here.

[0210] Referring to FIG. 3 and FIG. 4, some embodiments of the present disclosure provide an energy storage device 100, which comprises a first energy storage bin 1, a second energy storage bin 2, a control module 13 and a plurality of connectors 5. The first energy storage bin 1 comprises a first bin body 11 and a plurality of battery clusters 3. The second energy storage bin 2 comprises a second bin body 21 and a plurality of battery clusters 3. The control module 13 is configured to electrically control the plurality of battery clusters 3 in the first bin body 11 and the plurality of battery clusters 3 in the second bin body 21. Each of the plurality of battery clusters 3 in the first bin body 11 and each of the plurality of battery clusters 3 in the second bin body 21 is connected with a connector 5, and the connector 5 is configured to connect an energy storage converter 6. The first bin body 11 and the second bin body 21 are arranged along a height direction of an energy storage system 2000, the size of the first bin body 11 and the second bin body 21 along the height direction is less than the size of a standard container along the height direction, the size of the first bin body 11 and the second bin body 21 along a length direction is consistent with the size of the standard container along the length direction, and the size of the first bin body 11 and the second bin body 21 along a width direction is consistent with the size of the standard container along the width direction.

[0211] The energy storage device 100 provided by the embodiments of the present disclosure can selectively connect the energy storage converter 6 with the connector 5 according to the needs of the customers, which can improve the flexibility of the energy storage device 100, match different needs, and improve the versatility. In addition, the power of the energy storage converter 6 can be selected according to different needs. For example, if a smaller power energy storage converter 6 can meet the needs, a smaller power energy storage converter 6 can be selected, which is beneficial to reduce the cost of the energy storage converter 6 and the cost of electricity. In addition, the size of the first bin body 11 and the second bin body 21 along the height direction is set to be less than the size of the standard container along the height direction, which can reduce the total weight of the first energy storage bin 1 and the total weight of the second energy storage bin 2, and is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage system 2000, thereby reducing the use cost of the energy storage system 2000. In addition, the size of the first bin body 11 and the second bin body 21 along the length direction is set to be consistent with the size of the standard container along the length direction, and the size of the first bin body 11 and the second bin body 21 along the width direction is set to be consistent with the size of the standard container along the width direction, which is beneficial to match the existing standard container transportation tools and lifting tools, reduce the transportation cost of the energy storage device 100, and thereby reduce the use cost of the energy storage device 100.

[0212] In some embodiments, referring to FIG. 4 and FIG. 6, each connector 5 is connected with an energy storage converter 6.

[0213] Each battery cluster 3 in the first bin body 11 and each battery cluster 3 in the second bin body 21 is connected with a corresponding connector 5, and each connector 5 is connected with a corresponding energy storage converter 6, that is, each battery cluster 3 in the first bin body 11 and each battery cluster 3 in the second bin body 21 is connected with an energy storage converter 6.

[0214] In this way, a smaller power energy storage converter 6 can be selected, which is conducive to reducing the cost of the energy storage converter 6 and reducing the cost of electricity, and can reduce the influence between different battery clusters 3, thereby improving the reliability of the energy storage system 2000.

[0215] In other embodiments, referring to FIG. 7, a plurality of connectors 5 are connected with an energy storage converter 6 in parallel.

[0216] That is, the user can also connect a plurality of connectors 5 with an energy storage converter 6 in parallel according to the needs, which is conducive to reducing the number of energy storage converters 6 and improving the assembly efficiency.

[0217] In order to facilitate the rapid installation of customers on site, the control module 13 and the thermal management module 12 are integrated inside the first bin body 11 and the second bin body 21, and the first bin body 11 and the second bin body 21 can be connected with the PCS and the EMS after being stacked on site, which is conducive to reducing the workload of on-site assembly and improving the assembly efficiency, and is convenient for customers to use.

[0218] The EMS (Energy Management System) is a collection of software and hardware used for monitoring, controlling, analyzing and optimizing energy systems. It realizes efficient management and optimal allocation of energy by real-time monitoring and intelligent control of each link of energy production, distribution and consumption.

[0219] In some embodiments, the battery cluster 3 includes a plurality of battery monomers 43, and the weight of a single battery monomer 43 is 5 kg to 60 kg.

[0220] The weight of a single battery monomer 43 can be any one of 5 kg, 10 kg, 15 kg, 20 kg, 25 kg, 30 kg, 35 kg, 40 kg, 45 kg, 50 kg, 55 kg, 60 kg or any point value between any two of them. As an example, the mass of a single energy unit 40 is 30 kg.

[0221] The weight of the battery monomer 43 is appropriate so that an appropriate amount of battery monomers 43 can be placed in the bin body, and the energy density is moderate under the condition of meeting the transportation requirements.

[0222] In some embodiments, the energy of the first energy storage bin 1 or the second energy storage bin 2 is E, the size of the first bin body 11 or the second bin body 21 along the length direction of the energy storage system 2000 is a, the size of the first bin body 11 or the second bin body 21 along the width direction of the energy storage system 2000 is b, and 250KW / m 2 ≤E / (a×b)≤700KW / m 2 .

[0223] E / (a×b) can be any one of the point values of 250KW / m 2 , 300KW / m 2 , 350KW / m 2 , 400KW / m 2 , 450KW / m 2 , 460KW / m 2 , 470KW / m 2 , 480KW / m 2 , 485KW / m 2 , 490KW / m 2 , 495KW / m 2 , 500KW / m 2 , 510KW / m 2 , 550KW / m 2 , 600KW / m 2 , 650KW / m 2 , 700KW / m 2 , or any point value between any two of them.

[0224] The energy E can be obtained from the nameplate of the energy storage system 2000.

[0225] When E / (a×b)≥250KW / m 2 , the energy storage system 2000 can have a large energy density, improving the practicality of the energy storage system 2000; when E / (a×b)≤700KW / m 2 , the risk of the first bin body 11 or the second bin body 21 being too heavy to crush other bin bodies can be reduced, facilitating the transportation of the first bin body 11 or the second bin body 21. Therefore, when 250KW / m 2 ≤E / (a×b)≤700KW / m 2 , the energy density of the energy storage system 2000 and the mass of the first bin body 11 or the second bin body 21 are considered, improving the practicality of the energy storage system 2000 and facilitating the transportation of the energy storage system 2000.

[0226] In some embodiments, 450KW / m 2 ≤E / (a×b)≤600KW / m 2 .

[0227] E / (a x b) can be 450 KW / m 2 , 455 KW / m 2 , 460 KW / m 2 , 465 KW / m 2 , 470 KW / m 2 , 475 KW / m 2 , 480 KW / m 2 , 485 KW / m 2 , 490 KW / m 2 , 495 KW / m 2 , 500 KW / m 2 , 505 KW / m 2 , 510 KW / m 2 , 515 KW / m 2 , 520 KW / m 2 , 530 KW / m 2 , 540 KW / m 2 , 550 KW / m 2 , 600 KW / m 2 Any one of the point values or the point values between any two of the following: 450 KW / m, 455 KW / m, 460 KW / m, 465 KW / m, 470 KW / m, 475 KW / m, 480 KW / m, 485 KW / m, 490 KW / m, 495 KW / m, 500 KW / m, 505 KW / m, 510 KW / m, 515 KW / m, 520 KW / m, 530 KW / m, 540 KW / m, 550 KW / m, 600 KW / m.

[0228] As an example, E / (a x b) = 490 KW / m 2 .

[0229] The energy density of the energy storage system 2000 and the mass of the first bin body 11 or the second bin body 21 can be further improved, facilitating transportation of the energy storage system 2000.

[0230] In some embodiments, the adjacent two bin bodies are connected by welding, clamping, locking, or through a fixing member along the height direction of the energy storage system 2000.

[0231] The fixing member can be at least one of a bolt and nut, a pin, a screw, or a rivet. Of course, the fixing member can also include a fixing plate and the like to fixedly connect the adjacent two bin bodies along the height direction.

[0232] Exemplarily, the adjacent two bin bodies are connected by a middle twist lock.

[0233] The adjacent two bin bodies along the height direction are connected by the fixing member, which can limit the adjacent two bin bodies along the height direction, thereby reducing the risk of mutual movement of the adjacent two bin bodies after stacking, and further improving the structural stability of the energy storage system 2000.

[0234] The above merely provides preferred embodiments of the present disclosure, but not for limiting the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modified, equivalent replacement, improvement, and the like which falls into the principles and technical scope of the present disclosure should be included in the protection range of the present disclosure.

Claims

1. An energy storage system comprising: A first energy storage compartment, comprising a first compartment body and a plurality of battery clusters; A second energy storage compartment, the second energy storage compartment comprising a second compartment body and a plurality of battery clusters; a control module, the control module being configured to electrically control at least the plurality of battery clusters in the first compartment and the plurality of battery clusters in the second compartment; A plurality of energy storage converters, wherein each battery cluster in the first compartment and each battery cluster in the second compartment is connected to a corresponding energy storage converter; In which, the first warehouse body and the second warehouse body are arranged along the height direction of the energy storage system, the dimensions of the first warehouse body and the second warehouse body along the height direction are smaller than the dimensions of the standard container along the height direction, the dimensions of the first warehouse body and the second warehouse body along their length directions are consistent with the dimensions of the standard container in the length direction, and the dimensions of the first warehouse body and the second warehouse body along their width directions are consistent with the dimensions of the standard container in the width direction.

2. The energy storage system according to claim 1, wherein: The energy storage converter connected to the plurality of battery clusters in the first compartment is arranged outside the first compartment; and / or, The energy storage converter connected to the plurality of battery clusters in the second compartment is arranged outside the second compartment.

3. The energy storage system according to claim 1, wherein: The energy storage converter connected to the plurality of battery clusters in the first compartment is disposed in the first compartment; and / or, The energy storage converter connected to the plurality of battery clusters in the second compartment is disposed in the second compartment.

4. The energy storage system according to claim 1, wherein: The second warehouse is located at the bottom of the energy storage system, and all the energy storage converters are arranged at the bottom of the second warehouse.

5. The energy storage system according to any one of claims 1 to 3, wherein: The energy storage system further includes a plurality of connectors, and each of the battery clusters in the first compartment and each of the battery clusters in the second compartment is connected to the energy storage converter via one of the connectors.

6. The energy storage system according to claim 5, wherein: The second compartment is located at the bottom of the energy storage system, and all the connectors are arranged at the bottom of the second compartment.

7. The energy storage system according to any one of claims 1 to 6, wherein: Each of the battery clusters includes a plurality of battery devices, and the plurality of battery devices in each battery cluster are connected in parallel and / or in series.

8. The energy storage system according to any one of claims 1 to 7, wherein: The energy storage system includes a thermal management module, which is used to manage the temperatures of the plurality of battery clusters in the first compartment and the plurality of battery clusters in the second compartment.

9. The energy storage system according to claim 8, wherein: The first compartment is located on the top of the energy storage system, and the thermal management module is disposed on the top of the first compartment.

10. The energy storage system according to any one of claims 1 to 9, wherein: The second compartment is located below the first compartment. The second compartment has a second energy compartment and a second control compartment inside. The plurality of battery clusters are accommodated in the second energy compartment, and the control module is accommodated in the second control compartment.

11. The energy storage system according to claim 10, wherein: The second control compartment includes a first control sub-compartment and a second control sub-compartment separated from each other, the first control sub-compartment is located on the top of the second energy compartment, and the second control sub-compartment and the second energy compartment are arranged along the length direction of the second compartment body; The control module includes a first control part and a second control part, the first control part is accommodated in the first control sub-compartment, and the second control part is accommodated in the second control sub-compartment; The first control part at least includes a main control module, and the second control part includes a master control module.

12. The energy storage system according to any one of claims 1 to 11, wherein: The weight of the first energy storage bin is less than or equal to 45 tons; and / or the weight of the second energy storage bin is less than or equal to 45 tons.

13. The energy storage system according to any one of claims 1 to 12, wherein: The height of the first warehouse body is greater than or equal to 850 mm and less than 2896 mm; and / or the height of the second warehouse body is greater than or equal to 850 mm and less than 2896 mm.

14. The energy storage system according to claim 13, wherein: The height of the first warehouse body is greater than or equal to 1300 mm and less than or equal to 2400 mm; and / or the height of the second warehouse body is greater than or equal to 1300 mm and less than or equal to 2400 mm.

15. An energy storage device comprising: A first energy storage compartment, comprising a first compartment body and a plurality of battery clusters; A second energy storage compartment, the second energy storage compartment comprising a second compartment body and a plurality of battery clusters; a control module, configured to electrically control the plurality of battery clusters in the first compartment and the plurality of battery clusters in the second compartment; A plurality of connectors, each battery cluster in the first compartment and each battery cluster in the second compartment is connected to a corresponding connector, and the connector is used to connect to the energy storage converter; In which, the first warehouse body and the second warehouse body are arranged along the height direction of the energy storage system, the dimensions of the first warehouse body and the second warehouse body along the height direction are smaller than the dimensions of the standard container along the height direction, the dimensions of the first warehouse body and the second warehouse body along their length directions are consistent with the dimensions of the standard container in the length direction, and the dimensions of the first warehouse body and the second warehouse body along their width directions are consistent with the dimensions of the standard container in the width direction.

16. The energy storage device according to claim 15, wherein: Each of the connectors is correspondingly connected to one of the energy storage converters.

17. The energy storage device according to claim 15, wherein: A plurality of the connectors are connected in parallel to the energy storage converter.

18. An energy storage system comprising a power conversion device and the energy storage device according to any one of claims 15 to 17, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

19. A charging network comprising a charging pile and the energy storage system according to any one of claims 1 to 14 or the energy storage device according to any one of claims 15 to 17, wherein the energy storage device or the energy storage system is used to provide electrical energy to the charging pile.

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