Energy storage device, energy storage system and charging network

Abstract

The embodiments of the present disclosure provide a kind of energy storage device, energy storage system and charging network.The energy storage device includes at least one warehouse body and multiple energy units.The size of each warehouse body along its height direction is less than the size of standard container along the height direction, the size of each warehouse body along its length direction is consistent with the size of standard container along the length direction, and the size of each warehouse body along its width direction is consistent with the size of standard container along the width direction.Multiple energy units are contained in at least one warehouse body.The energy unit includes battery cell, the size of battery cell along the height direction of battery cell is L1, the size of battery cell along the length direction of battery cell is L2, and the size of battery cell along the width direction of battery cell is L3, wherein L1 is greater than or equal to 50mm, less than or equal to 300mm;L2 is greater than or equal to 200mm, less than or equal to 1500mm;L3 is greater than or equal to 20mm, less than or equal to 100mm.

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, it is necessary to use an energy storage device. 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 energy storage device, the energy storage system and the charging network are provided to reduce the use cost of the energy storage device.

[0006] To achieve the above object, the first aspect of the embodiments of the present disclosure provides an energy storage device, comprising:

[0007] at least one warehouse body, wherein the size of each warehouse body along the height direction is smaller than the size of a standard container along the height direction, the size of each warehouse body along the length direction is consistent with the size of the standard container along the length direction, and the size of each warehouse body along the width direction is consistent with the size of the standard container along the width direction;

[0008] a plurality of energy units, wherein the plurality of energy units are accommodated in the at least one warehouse body;

[0009] the energy unit comprises a battery cell, wherein the size of the battery cell along the height direction is L1, the size of the battery cell along the length direction is L2, and the size of the battery cell along the width direction is L3, wherein L1 is greater than or equal to 50 mm and less than or equal to 300 mm, L2 is greater than or equal to 200 mm and less than or equal to 1500 mm, and L3 is greater than or equal to 20 mm and less than or equal to 100 mm.

[0010] The energy storage device provided by the embodiments of the present disclosure has the size of each warehouse body along the height direction smaller than the size of a standard container along the height direction, that is, by reducing the size of a single warehouse body, the total weight of the single warehouse body and the components in the warehouse body can be reduced, which is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage device, thereby reducing the use cost of the energy storage device. In addition, by setting the size L1 of the battery cell along the height direction to be greater than or equal to 50 mm and less than or equal to 300 mm, the size L2 of the battery cell along the length direction to be greater than or equal to 200 mm and less than or equal to 1500 mm, and the size L3 of the battery cell along the width direction to be greater than or equal to 20 mm and less than or equal to 100 mm, the performance of the battery cell is improved, and the space occupancy rate of the battery cell in the warehouse body is also improved, which means that the electric quantity of the energy storage device can be improved as much as possible under the premise of meeting the transportation weight and reducing the size of the warehouse body, thereby further reducing the use cost of the energy storage device. In addition, by setting the size of the warehouse body along the length direction to be consistent with the size of the standard container along the length direction and the size of the warehouse body along the width direction to be consistent with the size of the standard container along the width direction, the transportation tools and spreaders of the existing standard containers can be matched, the transportation cost of the energy storage device is reduced, and the use cost of the energy storage device is reduced.

[0011] In some embodiments, 150mm≤L1≤260mm; and / or,

[0012] 250mm≤L2≤1200mm; and / or,

[0013] 30mm≤L3≤90mm.

[0014] By setting the dimension L1 of the battery monomer along the height direction thereof to be greater than or equal to 150mm and less than or equal to 260mm, the electrolyte in the battery monomer can climb to the top end of the battery monomer even under the influence of gravity, thereby reducing the influence of the battery monomer being too high on the service life of the battery monomer, and in addition, it is also beneficial to make the battery monomer have a certain volume, thereby improving the electric quantity of the battery monomer and effectively occupying space, and further improving the electric quantity of the energy storage device.

[0015] By setting the dimension L2 of the battery monomer along the length direction thereof to be greater than or equal to 250mm and less than or equal to 1200mm, the size and weight of the battery monomer can be appropriate, and it is also beneficial to make the battery monomer have a certain volume, thereby improving the electric quantity of the battery monomer and effectively occupying space, and further improving the electric quantity of the energy storage device.

[0016] By setting the dimension L3 of the battery monomer along the width direction thereof to be greater than or equal to 30mm and less than or equal to 90mm, the size of the battery monomer can be appropriate, which is beneficial to reduce the manufacturing cost, and in addition, it is also beneficial to make the battery monomer have a certain volume, thereby improving the electric quantity of the battery monomer and effectively occupying space, and further improving the electric quantity of the energy storage device.

[0017] In some embodiments, 0.05≤L1 / L2≤1.2; and / or,

[0018] 0.1≤L3 / L1≤0.9; and / or,

[0019] 0.025≤L3 / L2≤0.36.

[0020] Here, by setting the ratio of the dimension L1 of the battery monomer along the height direction thereof to the dimension L2 of the battery monomer along the length direction thereof to be greater than or equal to 0.05 and less than or equal to 1.2, the battery monomer in this size ratio range is appropriate, which can make the battery monomer have a certain volume, thereby improving the electric quantity of the battery monomer and effectively occupying space, and further improving the electric quantity of the energy storage device.

[0021] Here, by setting the ratio of the size L3 of the battery monomer along its width direction to the size L1 of the battery monomer along its height direction to be greater than or equal to 0.1 and less than or equal to 0.9, the battery monomer in this size ratio range is appropriate, so that the battery monomer has a certain volume, thereby improving the battery monomer's electric quantity and effective occupied space, further improving the energy storage device's electric quantity and energy density, and can improve the battery monomer's manufacturability and reduce manufacturing costs.

[0022] Here, by setting the ratio of the size L3 of the battery monomer along its width direction to the size L2 of the battery monomer along its length direction to be greater than or equal to 0.025 and less than or equal to 0.36, the battery monomer in this size ratio range is appropriate, so that the battery monomer has a certain volume, thereby improving the battery monomer's electric quantity and effective occupied space, further improving the energy storage device's electric quantity and energy density, and can improve the battery monomer's manufacturability and reduce manufacturing costs.

[0023] In some embodiments, the weight of a single battery monomer is s, and 3 kg≤s≤30 kg.

[0024] The weight of the energy unit is appropriate, so that a suitable amount of energy units can be placed in the bin body to meet the transportation demand, and the energy density is moderate.

[0025] In some embodiments, 5 kg≤s≤25 kg.

[0026] In further improving the battery monomer's electric quantity and effective occupied space, thereby further improving the energy storage device's electric quantity and energy density, the battery monomer's manufacturability can also be further improved, and the manufacturing costs can be reduced.

[0027] In some embodiments, the volume of each bin body is V, the total volume of the battery monomers in each bin body is V1, and 20%≤(V1 / V)×100%≤65%.

[0028] On the one hand, the volume ratio of the battery monomers in the bin body per unit volume can be improved, and the electric quantity of the energy storage device per unit volume can be improved; on the other hand, during the transportation of the energy storage device, more battery monomers that contribute to the storage of energy and are difficult to produce at the destination are transported, and other functional elements of the energy storage device, such as control elements, can be produced at a location close to the destination without being transported or with reduced transportation, which is conducive to reducing the transportation cost of the assembled energy storage device.

[0029] In some embodiments, 40%≤(V1 / V)×100%≤65%.

[0030] Further conducive to reducing the transportation cost of the assembled energy storage device.

[0031] In some embodiments, each of the bin bodies has a volume V, each of the battery monomers has a volume V2, and 0.000063≤(V2 / V)≤0.00061.

[0032] On the one hand, the proportion of the volume of the battery monomers in the unit volume of the bin body can be increased, and the electric quantity of the unit volume of the energy storage device can be increased; on the other hand, during transportation of the energy storage device, more of the transported battery monomers contribute to the energy storage and are difficult to produce and cannot be produced at the destination, and other functional elements such as control elements of the energy storage device can be produced at a location close to the destination without being transported or with reduced transportation, which is conducive to reducing the transportation cost of the assembled energy storage device.

[0033] In some embodiments, the number of the battery monomers in each of the bin bodies is p, and 800≤p≤4160.

[0034] The number of the battery monomers is appropriate, so that an appropriate amount of the battery monomers can be placed in the bin body, the energy density is moderate under the condition of meeting the transportation demand.

[0035] In some embodiments, each of the bin bodies contains a plurality of battery layers, the plurality of battery layers are arranged along a height direction of the bin body, the plurality of battery monomers in each of the battery layers are arranged in rows and columns, the plurality of battery monomers in each row are arranged along a length direction of the bin body, the plurality of battery monomers in each column are arranged along a width direction of the bin body, and a size of the length direction of the bin body is greater than a size of the width direction of the bin body; a height direction of the battery monomer is parallel to the height direction of the bin body, a length direction of the battery monomer is parallel to the length direction of the bin body, and a width direction of the battery monomer is parallel to the width direction of the bin body.

[0036] The number of layers of the battery layers in each of the bin bodies is 3-14 layers; and / or,

[0037] Each of the battery layers includes 4-20 columns of the battery monomers; and / or,

[0038] Each of the battery layers includes 10-60 rows of the battery monomers.

[0039] So that an appropriate amount of the battery monomers can be placed in the bin body, the space utilization is improved, and the energy density is moderate under the condition of meeting the transportation demand.

[0040] In some embodiments, each of the battery containers contains a plurality of battery layers arranged along a height direction of the battery container, each of the battery layers contains a plurality of battery monomers arranged in rows and columns, the plurality of battery monomers in each row are arranged along a length direction of the battery container, the plurality of battery monomers in each column are arranged along a width direction of the battery container, and the length direction of the battery container is larger than the width direction of the battery container; the height direction of the battery monomers is parallel to the height direction of the battery container, the width direction of the battery monomers is parallel to the length direction of the battery container, and the length direction of the battery monomers is parallel to the width direction of the battery container.

[0041] The number of layers of the battery layers of each of the battery containers is 3-14 layers; and / or,

[0042] Each of the battery layers contains 50-260 columns of the battery monomers; and / or,

[0043] Each of the battery layers contains 1-10 rows of the battery monomers.

[0044] In order to place an appropriate amount of battery monomers in the battery container, improve the space utilization, and meet the transportation requirements, the energy density is moderate.

[0045] In some embodiments, the total weight of the energy storage device is M, the total weight of the battery monomers in the energy storage device is M1, and (M1 / M)×100%≥60%.

[0046] In this way, on the one hand, the weight proportion of the battery monomers in the unit volume of the battery container can be improved, and the electric quantity of the unit volume of the energy storage device can be improved; on the other hand, during the transportation of the energy storage device, more battery monomers that contribute to the energy storage and have a higher production difficulty and cannot be produced at the destination are transported, while other structures can be produced at a location close to the destination without transportation or with reduced transportation, and after the battery container is assembled into the energy storage device, the transportation cost of the assembled energy storage device is reduced.

[0047] In some embodiments, (M1 / M)×100%≥80%.

[0048] In this way, the transportation cost of the assembled energy storage device is further reduced.

[0049] In some embodiments, each of the battery containers is provided with a plurality of battery devices, and each of the battery devices contains a box and a plurality of battery monomers contained in the box.

[0050] The size of the box along the height direction of the box is L4, and 100mm≤L4≤1000mm; and / or,

[0051] The size of the box in the height direction of the box is L5, 600mm≤L5≤2400mm; and / or,

[0052] The size of the box in the width direction of the box is L6, 500mm≤L6≤2500mm.

[0053] The size of the box in the height direction of the box, the size in the length direction of the box and the size in the width direction of the box can be appropriately adjusted to improve the space utilization and meet the transportation requirements, and the energy density is moderate.

[0054] In some embodiments, 180mm≤L4≤550mm; and / or,

[0055] 1000mm≤L5≤2100mm; and / or,

[0056] 800mm≤L6≤2000mm.

[0057] Further, the space utilization is improved to meet the transportation requirements, and the energy density is further improved.

[0058] In some embodiments, the volume of each of the bin bodies is V, the total volume of the box in each of the bin bodies is V3, and 40%≤(V3 / V)×100%≤65%.

[0059] The energy density of the energy storage device and the structural strength of the bin body can be considered, and the bin body is more practical.

[0060] In some embodiments, each of the bin bodies contains at least one battery layer, the at least one battery layer is arranged in the height direction of the bin body, a plurality of battery devices in each of the battery layers are arranged in rows and columns, a plurality of battery devices in each row are arranged in the length direction of the bin body, a plurality of battery devices in each column are arranged in the width direction of the bin body, and the size in the length direction of the bin body is greater than the size in the width direction of the bin body.

[0061] The number of layers of the battery layer of each of the bin bodies is 1-5 layers; and / or,

[0062] Each of the battery layers includes 2-4 columns of battery devices; and / or,

[0063] Each of the battery layers includes 1-2 rows of battery devices.

[0064] In order to facilitate the placement of an appropriate amount of battery devices in the bin body, improve the space utilization, meet the transportation requirements, and the energy density is moderate.

[0065] In some embodiments, the total weight of the energy storage device is M, the total weight of the battery device in the energy storage device is M2, and 70%≤(M2 / M)×100%≤90%.

[0066] The energy density of the energy storage device and the structural strength of the bin body can be balanced, and the bin body has higher practicability.

[0067] In some embodiments, each bin body is provided with a plurality of battery modules, and each battery module comprises a plurality of energy units.

[0068] The size of the battery module along the height direction of the bin body is L7, and 50mm≤L7≤1000mm; and / or,

[0069] The size of the battery module along the length direction of the bin body is L8, and 200mm≤L8≤2400mm; and / or,

[0070] The size of the battery module along the width direction of the bin body is L9, and 200mm≤L9≤2500mm.

[0071] The size of the battery module along the width direction of the bin body can be appropriately adjusted, the space utilization is improved, and the energy density is moderate under the condition of meeting the transportation demand.

[0072] In some embodiments, 150mm≤L7≤550mm; and / or,

[0073] 1000mm≤L8≤2100mm; and / or,

[0074] 800mm≤L9≤2000mm.

[0075] The space utilization is further improved, and the energy density is further improved under the condition of meeting the transportation demand.

[0076] In some embodiments, each bin body contains at least one battery layer, the at least one battery layer is arranged along the height direction of the bin body, a plurality of battery modules in each battery layer are arranged in rows and columns, a plurality of battery modules in each row are arranged along the length direction of the bin body, and a plurality of battery modules in each column are arranged along the width direction of the bin body.

[0077] The number of layers of the battery layer of each bin body is 1-14 layers; and / or,

[0078] Each battery layer comprises 2-20 columns of battery modules; and / or,

[0079] Each battery layer comprises 1-10 rows of battery modules.

[0080] In order to place a proper amount of battery modules in the bin body, improve space utilization, meet the transportation demand, and moderate energy density.

[0081] In some embodiments, the energy storage device includes an energy storage bin, the energy storage bin includes the bin body and components arranged in the bin body, the weight of the energy storage bin is M, and M is less than or equal to 45 tons.

[0082] In this embodiment, by controlling the overall weight of the energy storage bin to be within 45 tons, a single energy storage bin can meet the transportation limit requirements of some countries, and the integration of the energy storage bin is as high as possible, 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.

[0083] In some embodiments, the energy of the energy storage device is E, the size of the bin body along the length direction of the bin body is a, the size of the bin body along the width direction of the bin body is b, 250KW / m 2 ≤E / (a×b)≤700KW / m 2 .

[0084] The energy density and bin body mass of the energy storage device are considered, the practicality of the energy storage device is improved, and the transportation of the energy storage device is facilitated.

[0085] In some embodiments, 450KW / m 2 ≤E / (a×b)≤600KW / m 2 .

[0086] The energy density and bin body mass of the energy storage device are further improved, and the transportation of the energy storage device is facilitated.

[0087] In some embodiments, the number of bin bodies is a plurality, the plurality of bin bodies are arranged along the height direction of the standard container, and the plurality of bin bodies accommodate the energy units; the energy storage device includes a control module, and the control module includes a general control module, and the general control module is used for electrically controlling the energy units of the plurality of bin bodies.

[0088] In this embodiment, by arranging the control module, the control module can control the electric energy input or output of the energy unit, and realize the electrical control of the energy unit. In addition, the general control module is used for electrically controlling the energy units of the plurality of bin bodies, so that a single energy storage device can provide or store electric energy, which is beneficial to improve the use convenience of the energy storage device.

[0089] In some embodiments, the energy storage device includes a thermal management module, and the thermal management module is used for managing the temperature of the energy units of the plurality of bin bodies.

[0090] In the embodiment, the thermal management module is arranged to manage the temperature of the energy unit, and reduce the risk of temperature runaway of the energy unit.

[0091] In some embodiments, the number of energy units contained in each of the housings is the same; or, the plurality of energy units are connected in parallel and / or series to form a battery cluster, and the number of battery clusters contained in each of the housings is the same.

[0092] In this way, the overall weight of each housing and the components arranged in the housing is balanced.

[0093] In some embodiments, the size of each of the housings in the height direction is greater than or equal to one-third of the size of the standard container in the height direction.

[0094] The size of the housing cannot be infinitely small, and when the size of the housing in the height direction is greater than or equal to one-third of the size of the standard container in the height direction, the energy storage device has high manufacturability, high volume energy density, and is convenient to transport and install.

[0095] In some embodiments, the standard container is a 20-foot standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0096] The embodiments of the present disclosure further 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.

[0097] The embodiments of the present disclosure further provide a charging network, which comprises a charging pile and the energy storage device or the energy storage system described above, and the energy storage device is used to provide electric energy for the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0098] FIG. 1 is a structural schematic diagram of a charging network provided by some embodiments of the present disclosure;

[0099] FIG. 2 is a structural schematic diagram of an energy storage system provided by some embodiments of the present disclosure;

[0100] FIG. 3 is a structural schematic diagram of an energy storage device provided by some embodiments of the present disclosure;

[0101] FIG. 4 is a partial structural schematic diagram of the energy storage device in FIG. 3;

[0102] FIG. 5 is a structural schematic diagram of a battery device provided by some embodiments of the present disclosure;

[0103] FIG. 6 is a structural schematic diagram of a control module provided by some embodiments of the present disclosure;

[0104] FIG. 7 is a structural schematic diagram of a battery monomer provided by some embodiments of the present disclosure.

[0105] The reference signs are explained as follows: 1000, charging network; 2000, energy storage system; 100, energy storage device; 100a, energy storage bin; 10, bin body; 11, first bin body; 12, second bin body; 20, thermal management module; 30, control module; 31, main control module; 32, power distribution module; 33, general control module; 34, fire control module; 40, battery device; 41, box body; 411, first box body; 412, second box body; 42, battery module; 43, battery cell; 200, charging pile; 300, power conversion device; 3000, power generation device. DETAILED DESCRIPTION

[0106] If not particularly stated, all the embodiments and optional embodiments of the present disclosure can be combined with each other to form new technical solutions.

[0107] If not particularly stated, all the technical features and optional technical features of the present disclosure can be combined with each other to form new technical solutions.

[0108] With the development of clean energy, more and more devices use electric energy as driving energy, and then as power batteries capable of storing more electric energy and capable of multiple reciprocating charging and discharging, such as lithium ion batteries. Among them, power batteries are not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields.

[0109] In the embodiments of the present disclosure, the energy unit can be a secondary battery, which refers to an energy unit that can be activated by charging after discharging to continue to use.

[0110] 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. The embodiments of the present disclosure are not limited thereto.

[0111] The energy unit generally includes an electrode assembly. For example only, the electrode assembly includes a positive electrode, a negative electrode, and a separator disposed between the negative electrode and the positive electrode. During the charging and discharging process of the energy unit, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0112] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0113] As an example, the positive active material can include at least one of lithium-containing phosphates, lithium transition metal oxides, and modified compounds of each thereof. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as a battery positive active material can also be used.

[0114] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0115] As an example, the negative electrode sheet can include a negative electrode current collector and a negative active material disposed on at least one surface of the negative electrode current collector.

[0116] In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0117] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0118] In some embodiments, the separator is a separator film. The present disclosure does not have a specific limitation on the type of the separator film, and any publicly known porous structure separator film having good chemical stability and mechanical stability can be used.

[0119] 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.

[0120] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode and the negative electrode, and functions to transport ions and separate the positive electrode and the negative electrode.

[0121] In some embodiments, the energy unit further includes an electrolyte, and the electrolyte functions to conduct ions between the positive electrode and the negative electrode. The present disclosure does not have a specific limitation on the type of the electrolyte, and the electrolyte can be selected as needed. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0122] The electrode assembly can have a wound structure, a stacked structure, or a hybrid structure of the wound structure and the stacked structure.

[0123] In some embodiments, the electrode assembly has a wound structure. The positive electrode sheet and the negative electrode sheet are wound to have the wound structure.

[0124] In some embodiments, the electrode assembly has a stacked structure.

[0125] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape.

[0126] In some embodiments, the electrode assembly is provided with tabs, and the tabs can guide current from the electrode assembly. The tabs include positive tabs and negative tabs.

[0127] 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, which 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, it is used to encapsulate the electrode assembly, the electrolyte, and other components.

[0128] As an example, the energy unit can be a cylindrical energy unit, a prismatic energy unit, a soft-pack energy unit, or an energy unit of other shapes, including a square-shell energy unit, a blade-shaped energy unit, a multi-prismatic battery (such as a hexagonal prismatic battery), etc., without specific limitation in the present disclosure.

[0129] In some embodiments, the housing includes an end cap and a shell body, the shell body is provided with an opening, and the end cap is arranged on the opening. The shell body can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0130] In some embodiments, at least one electrode terminal is arranged on the housing, 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 a current collecting member. The electrode terminal can be arranged on the end cap, or arranged on the shell body.

[0131] The power station has a higher requirement 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 bin 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 bin.

[0132] Therefore, the embodiments of the present disclosure propose a new technical solution, and the technical solution described in the embodiments of the present disclosure is applicable to an energy storage device, an energy storage system including the energy storage device, and a charging network.

[0133] 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, etc. 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 the low electricity consumption period, and provide electric energy for related users or electric equipment during the peak electricity consumption period. The energy storage system provided by the embodiments of the present disclosure can be any power system that needs to use an energy storage device.

[0134] 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 configured to charge an electric device. The charging network 1000 can further include an energy storage device 100 or an energy storage system 2000, the energy storage device 100 is electrically connected to the charging pile 200, and the energy storage device 100 is configured to provide electric energy for the charging pile 200.

[0135] It should be noted that the charging pile 200 and the energy unit in the energy storage device 100 are electrically connected through a cable, and the energy unit can provide the electric energy stored by itself to the charging pile 200. The charging pile 200 has one or more connectors configured to be connected to an electric device (such as a vehicle), so as to charge the electric device. 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 when deployed.

[0136] 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.

[0137] In one charging network 1000, the charging pile 200 can be one, and the energy storage device 100 provides electric energy for one charging pile 200; the charging pile 200 can also be multiple, and the energy storage device 100 provides electric energy for multiple charging piles 200.

[0138] 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 electric energy for two charging piles 200.

[0139] 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 the energy storage device 100 to convert the electric power provided by the power generation device 3000. The power conversion device 300 guides the electric energy provided by the power generation device 3000 into the energy storage device 100 after power conversion.

[0140] The power conversion device 300 is used to be connected between the power generation device 3000 and the energy storage device 100. The power generation device 3000 is used to generate electric energy, and the power generation device 3000 is used to store the generated electric energy into the energy storage device 100 through the power conversion device 300. The energy storage system 2000 can effectively improve the operation reliability of the energy storage system 2000 by using the energy storage device 100. In specific implementation, the power generation device can be a solar panel, a water power generation device, a fire power generation device, etc. The specific type of the power generation device is not limited in the present disclosure.

[0141] 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 the generated electric energy to the power conversion device 300, and the electric energy is introduced into the energy storage device 100 through the power conversion device 300 for storage.

[0142] Please refer to FIGS. 3-5, some embodiments of the present disclosure provide an energy storage device 100, which includes at least one warehouse body 10 and a plurality of energy units. The size of each warehouse body 10 along its height direction is smaller than the size of a standard container along the height direction, the size of each warehouse body 10 along its length direction is consistent with the size of a standard container along the length direction, and the size of each warehouse body 10 along its width direction is consistent with the size of a standard container along the width direction. The plurality of energy units are contained in the at least one warehouse body 10. The energy unit includes a battery cell 43, the size of the battery cell 43 along the height direction of the battery cell 43 is L1, the size of the battery cell 43 along the length direction of the battery cell 43 is L2, and the size of the battery cell 43 along the width direction of the battery cell 43 is L3, wherein L1 is greater than or equal to 50 mm and less than or equal to 300 mm, L2 is greater than or equal to 200 mm and less than or equal to 1500 mm, and L3 is greater than or equal to 20 mm and less than or equal to 100 mm.

[0143] The warehouse body 10 can be a cabinet or a container, and the warehouse body 10 has a cavity inside which can contain the energy unit and other components of the energy storage device 100. The warehouse body 10 can have a hexahedral structure.

[0144] The warehouse body 10 usually has a cuboid structure, the length direction and the width direction of the warehouse body 10 are parallel to the horizontal plane, and the length direction of the warehouse body 10 is parallel to the longest side of the cuboid structure of the warehouse body 10. The height direction of the warehouse body 10 is perpendicular to the ground. As an example, as shown in FIG. 3, the length direction of the warehouse body 10 is represented by X, the width direction of the warehouse body 10 is represented by Y, and the height direction of the warehouse body 10 is represented by Z.

[0145] Here, the number of the warehouse bodies 10 is not limited herein, and the number of the warehouse bodies 10 can be one or multiple.

[0146] In the embodiment where the number of the plurality of the storage bodies 10 is multiple, the plurality of the storage bodies 10 are arranged along the height direction of the storage body 10, which can be understood as the plurality of the storage bodies 10 are stacked or connected along the height direction of the storage body 10.

[0147] The number of the storage bodies 10 in the energy storage device 100 can be one, two, or any number of more than two. For example, the energy storage device 100 includes two storage bodies 10, and the two storage bodies 10 are arranged in a stack along the height direction. For another example, the energy storage device 100 includes three storage bodies 10, and the three storage bodies 10 are arranged in a stack along the height direction.

[0148] Here, in the embodiment where the number of the plurality of the storage bodies 10 is one, each of the storage bodies 10 refers to the storage body 10. In the embodiment where the number of the plurality of the storage bodies 10 is multiple, each of the storage bodies 10 refers to each of the plurality of the storage bodies 10 satisfying the corresponding condition. That is, each of the storage bodies 10 here refers to a single storage body 10.

[0149] Here, the energy unit can be a battery cell 43 or a battery device 40 formed by electrically connecting a plurality of battery cells 43.

[0150] Referring to FIG. 4, the plurality of energy units can form a plurality of layers and / or a plurality of columns of battery devices 40, and each row or column of the battery devices 40 includes a plurality of battery devices 40.

[0151] The battery device 40 mentioned in the embodiments of the present disclosure can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 43 connected in series, in parallel, or in a mixed connection through a busbar component.

[0152] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 43.

[0153] As an example, the battery cell assembly can be a battery module 42 formed by arranging and fixing a plurality of battery cells 43 into an independent module. As an example, the battery module 42 can be formed by bundling a plurality of battery cells 43 with a cable tie.

[0154] In some embodiments, the battery device 40 can be a battery pack including a box 41 and one or more battery cell assemblies accommodated in the box 41.

[0155] As an example, the battery cell assembly can be the battery module 42, and the battery cell assembly can be accommodated in the case 41 by fixing the battery module 42 in the case 41.

[0156] As an example, the battery cell assembly can also be accommodated in the case 41 by fixing the plurality of battery cells 43 directly to the case 41.

[0157] As an example, referring to FIG. 5, the case 41 can include a first case 411 and a second case 412. The first case 411 and the second case 412 are coupled so that an enclosed space is formed inside the case 41 to accommodate the battery cell assembly. The enclosed here means covered or closed, which can be sealed or unsealed. The first case 411 can be a top cover or a bottom plate.

[0158] As an example, the case 41 can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that an enclosed space is formed inside the case 41 to accommodate the battery cell assembly.

[0159] As an example, some of the plurality of cases 10 can accommodate energy units, and the other cases 10 can not accommodate energy units. As another example, all of the plurality of cases 10 can accommodate energy units.

[0160] In the embodiment in which some of the plurality of cases 10 accommodate energy units, one of the plurality of cases 10 can accommodate energy units, or a plurality of cases 10 can accommodate energy units.

[0161] The plurality of energy units accommodated in the case 10 can be battery cells 43, battery modules 42, battery packs, or battery devices 40.

[0162] As an example, in the embodiment in which all of the plurality of cases 10 accommodate energy units, the number of energy units accommodated in each of the plurality of cases 10 is the same. In this way, it is advantageous to balance the weight of each of the plurality of cases 10 and the components disposed in the case 10 as a whole.

[0163] As an example, the arrangement of the energy units in each of the plurality of cases 10 is also the same, which is advantageous to improve assembly efficiency.

[0164] As an example, the plurality of cases 10 are the same, which is advantageous to improve the versatility of the case 10.

[0165] As an example, the plurality of energy units are connected in parallel and / or in series to form battery clusters, and the number of battery clusters accommodated in each of the plurality of cases 10 is the same. In this way, it is advantageous to balance the weight of each of the plurality of cases 10 and the components disposed in the case 10 as a whole.

[0166] As an example, the arrangement of the battery clusters in each of the plurality of cases 10 is also the same, which is advantageous to improve assembly efficiency.

[0167] Here, the plurality of energy units being connected in parallel and / or in series to form the battery cluster can refer to the plurality of battery devices 40 being connected in parallel and / or in series to form the battery cluster.

[0168] In some embodiments, referring to FIG. 4 and FIG. 6, the number of the plurality of bin bodies 10 is multiple, the plurality of bin bodies 10 are arranged along the height direction of the standard container, and the plurality of bin bodies 10 each contain energy units. The energy storage device 100 includes a control module 30, and the control module includes a master control module 33 for electrically controlling the energy units of the plurality of bin bodies 10.

[0169] Here, the energy storage device 100 includes the plurality of bin bodies 10, and the plurality of bin bodies 10 are arranged along the height direction of the standard container to form the energy storage device 100.

[0170] Here, the total height of the plurality of bin bodies 10 after being stacked along the height direction of the standard container can be less than, equal to, or greater than the height of the standard container.

[0171] The master control module 33 is used for electrically controlling the energy units of the plurality of bin bodies 10, that is, a single energy storage device 100 can form a complete system, that is, a single energy storage device 100 can provide or store electrical energy.

[0172] The master control module 33 is used for controlling the switching action of the master control module 31 in the bin body 10. In this embodiment, by setting the control module 30, the control module 30 can control the electrical energy input or output of the energy unit, thereby achieving electrical control of the energy unit. In addition, the master control module 33 is used for electrically controlling the energy units of the plurality of bin bodies 10, so that a single energy storage device 100 can provide or store electrical energy, which is beneficial to improve the use convenience of the energy storage device 100.

[0173] In some embodiments, referring to FIG. 3 and FIG. 4, the energy storage device 100 includes a thermal management module 20 for managing the temperature of the energy units of the plurality of bin bodies 10.

[0174] In this embodiment, by setting the thermal management module 20, the thermal management module 20 can manage the temperature of the energy unit and reduce the risk of temperature runaway of the energy unit.

[0175] Referring to FIG. 3, the length dimension a of the bin body 10 is the distance between the two ends of the bin body 10 along the length direction; the width dimension b of the bin body 10 is the distance between the two ends of the bin body 10 along the width direction; and the height dimension h of the bin body 10 is the distance between the two ends of the bin body 10 along the height direction. The above-mentioned dimensions a, b and h are the maximum dimensions of the outer contour of the bin body 10 in the corresponding direction. The bin body 10 can include eight corner pieces and six box walls, the eight corner pieces are located at the eight corners of the cuboid structure of the bin body 10, and the eight corner pieces respectively protrude from the box walls of the bin body 10, the total span of the two corner pieces arranged along the height direction is the height of the bin body 10, the total span of the two corner pieces arranged along the length direction is the length of the bin body 10, and the total span of the two corner pieces arranged along the width direction is the width of the bin body 10. When calculating the dimensions of the bin body 10, the pipelines and cables connected to the bin body 10 and located outside the bin body 10 can not be included in the dimensions of the bin body 10.

[0176] The standard container can be a standard container size in the transportation process, such as 10 feet, 20 feet, 30 feet, 40 feet or 45 feet, which meets the corresponding standard, and the length, width and height thereof have corresponding dimensions respectively. The standard container can refer to GB / T1413-2023 Series 1 Container Classification, Dimensions and Rated Mass.

[0177] The 10 feet can include: the length dimension is 2991mm, the tolerance is 0mm-5mm; the width dimension is 2438mm, the tolerance is 0mm-5mm; and the height dimension is 2438mm or less than 2438mm; the tolerance is 0mm-5mm.

[0178] The 20 feet can include: the length dimension is 6058mm, the tolerance is 0mm-6mm; the width dimension is 2438mm, the tolerance is 0mm-5mm; and the height dimension is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0179] The 30 feet can include: the length dimension is 9125mm, the tolerance is 0mm-10mm; the width dimension is 2438mm, the tolerance is 0mm-5mm; and the height dimension is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0180] The 40 feet can include: the length dimension is 12192mm, the tolerance is 0mm-10mm; the width dimension is 2438mm, the tolerance is 0mm-5mm; and the height dimension is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0181] 45 feet can include: a length of 13716mm, a tolerance of 0mm-10mm; a width of 2438mm, a tolerance of 350mm-5mm; and a height of 2591mm or 2896mm; a tolerance of 0mm-5mm.

[0182] In the embodiments of the present disclosure, for the various sizes of the bin body 10, the sizes within the range of ±1%, ±2%, ±3%, ±4%, ±5% of the size can be considered as the size within the tolerance range.

[0183] The size of the bin body 10 along the height direction is set to be smaller than the size of the standard container along the height direction. By reducing the size of the bin body 10, the total weight of the bin body 10 loaded with components such as energy units can be reduced, which is beneficial to improve the problem of transportation overweight and reduce the transportation cost of the energy storage device 100.

[0184] In some embodiments, the standard container is a 20 feet standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0185] In some embodiments, the size of each bin body 10 along the height direction is greater than or equal to one third of the size of the standard container along the height direction.

[0186] The size of each bin body 10 cannot be infinitely small, and when the size of each bin body 10 along the height direction is greater than or equal to one third of the size of the standard container along the height direction, the manufacturability of the energy storage device 100 is high, the volume energy density is high, and the transportation and installation are more convenient.

[0187] Exemplarily, the size of each bin body 10 along the height direction is equal to one half of the size of the standard container along the height direction. In this way, two bin bodies 10 stacked along the height direction are equal to the height of one standard container.

[0188] Exemplarily, the energy storage device 100 further comprises a connecting mechanism (not shown in the figure), which is configured to be capable of connecting two bin bodies 10 adjacent along the height direction of the bin body 10. The connecting mechanism comprises a support arranged between the two adjacent bin bodies 10 along the height direction.

[0189] By connecting the bin bodies 10 through the connecting mechanism, the stacking of the bin bodies 10 can be more stable.

[0190] Here, the height of the standard container minus the height of the support and divided by 2 is the size of one half of the standard container along the height direction.

[0191] Exemplarily, the length of the bin body 10 is 6058mm, the width is 2438mm, and the height is 1434mm.

[0192] In some embodiments, referring to FIGS. 3-4, each of the bin bodies 10 has a length dimension consistent with a length dimension of a standard container and a width dimension consistent with a width dimension of the standard container.

[0193] In this embodiment, by setting the length dimension of the bin body 10 to be consistent with the length dimension of the standard container and the width dimension of the bin body 10 to be consistent with the width dimension of the standard container, the bin body 10 is adapted to the existing standard container transport tools and spreaders, thereby reducing the transportation cost of the energy storage device 100 and the use cost of the energy storage device 100.

[0194] Here, in order to adapt to the bin body 10 having a height dimension smaller than a height dimension of a standard container, a battery cell 43, a battery module 42, and a battery device 40 meeting the system grouping requirement are developed.

[0195] Taking a square battery cell 43 as an example, in a vertical state, a face formed by the length direction and the width direction of the battery cell 43 is a bottom face of the battery cell 43, a face formed by the length direction and the height direction of the battery cell 43 is a large face of the battery cell 43, and a face formed by the width direction and the height direction of the battery cell 43 is a side face of the battery cell 43.

[0196] As an example, referring to FIG. 7, the height dimension L1 of the battery cell 43 is set to be greater than or equal to 50 mm and less than or equal to 300 mm.

[0197] That is, the height dimension L1 of the battery cell 43 can be a point value of any one of 50 mm, 75 mm, 100 mm, 125 mm, 150 mm, 200 mm, 250 mm, 260 mm, 270 mm, 280 mm, 290 mm, 300 mm or a point value between any two of them.

[0198] In a vertical state, if the height dimension (in the direction perpendicular to the bottom face) of the battery cell 43 is greater than 300 mm, the electrolyte in the battery cell 43 may be difficult to climb to the top end of the battery cell 43 under the influence of gravity, thereby affecting the service life of the battery cell 43, and if the height dimension of the battery cell 43 is less than 50 mm, the capacity of the battery cell 43 will be reduced.

[0199] Note that the height dimension of the battery cell 43 refers to the dimension between the top wall and the bottom wall of the case, excluding the height of the pole and other parts provided to the case. Similarly, the dimension of the battery cell 43 in the length direction thereof refers to the dimension between the two side walls of the case in the length direction thereof, and the dimension of the battery cell 43 in the width direction thereof refers to the dimension between the two side walls of the case in the width direction thereof.

[0200] As an example, referring to FIG. 7, the dimension L2 of the battery cell 43 in the length direction thereof is set to be equal to or greater than 200 mm and less than or equal to 1500 mm.

[0201] That is, the dimension L2 of the battery cell 43 in the length direction thereof can be a point value of any one of 200 mm, 250 mm, 300 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 1100 mm, 1200 mm, 1300 mm, 1400 mm, 1500 mm or a point value between any two of them.

[0202] The dimension of the battery cell 43 in the length direction thereof greater than 1500 mm can cause the structure of the case 41 supporting the same to be too large, and the weight of the length dimension of the battery cell 43 added thereto can cause the entire case 41 or module structure to be insufficient in supporting force, thus causing deformation. The length dimension of the battery cell 43 less than 200 mm can reduce the capacity of the battery cell 43.

[0203] As an example, referring to FIG. 7, the dimension L3 of the battery cell 43 in the width direction thereof is set to be equal to or greater than 20 mm and less than or equal to 100 mm.

[0204] That is, the dimension L3 of the battery cell 43 in the width direction thereof can be a point value of any one of 20 mm, 25 mm, 30 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm or a point value between any two of them.

[0205] The dimension of the battery cell 43 in the width direction thereof (the dimension of the battery cell 43 in the width direction thereof is less than the dimension of the battery cell 43 in the length direction thereof) greater than 100 mm can require more jelly rolls to be added to the case of the battery cell 43, thus causing a problem of high manufacturing cost. The width dimension of the battery cell 43 less than 20 mm can reduce the capacity of the battery cell 43.

[0206] In addition, heat insulation pads, gaskets, wire harness isolation plates and other components can be arranged around the battery monomer 43, and a gap is required between components for installation. Therefore, too small size of the battery monomer 43 will result in an increase in the number of battery monomers 43 in the same volume, an increase in additional components and gaps outside the battery monomer 43, an increase in the total volume, a decrease in the effective space occupied by the battery monomer 43, and a decrease in space utilization and grouping efficiency.

[0207] The energy storage device 100 provided by the embodiments of the present disclosure has a size along the height direction of the bin body 10 smaller than the size along the height direction of the standard container. That is, by reducing the size of the bin body 10, the total weight of the bin body 10 and the components in the bin body 10 can be reduced, which is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage device 100, thereby reducing the use cost of the energy storage device 100. In addition, by setting the size L1 of the battery monomer 43 along the height direction to be greater than or equal to 50 mm and less than or equal to 300 mm, the size L2 of the battery monomer 43 along the length direction to be greater than or equal to 200 mm and less than or equal to 1500 mm, and the size L3 of the battery monomer 43 along the width direction to be greater than or equal to 20 mm and less than or equal to 100 mm, the performance of the battery monomer 43 is improved, and the space occupancy of the battery monomer 43 in the bin body 10 is also improved, which means that the power of the energy storage device 100 can be improved as much as possible under the premise of meeting the transportation weight and reducing the size of the bin body 10, thereby further reducing the use cost of the energy storage device 100. In addition, by setting the size of the bin body 10 along the length direction to be consistent with the size of the standard container along the length direction, and setting the size of the bin body 10 along the width direction to be consistent with the size of the standard container along the width direction, the transportation tools and lifting devices of the existing standard container can be matched, thereby reducing the transportation cost of the energy storage device 100, and thereby reducing the use cost of the energy storage device 100.

[0208] In some embodiments, 150 mm≤L1≤260 mm.

[0209] That is, the size L1 of the battery monomer 43 along the height direction can be a point value of any one of 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, 240 mm, 250 mm, 260 mm or a point value between any two of them.

[0210] By setting the size L1 of the battery monomer 43 in the height direction thereof to be greater than or equal to 150 mm and less than or equal to 260 mm, the electrolyte in the battery monomer 43 can climb to the top end of the battery monomer 43 even under the influence of gravity, thereby reducing the impact of the height of the battery monomer 43 on the service life of the battery monomer 43, and also facilitating the battery monomer 43 to have a certain volume, thereby increasing the power of the battery monomer 43 and effectively occupying space, further increasing the power of the energy storage device 100.

[0211] In some embodiments, 250 mm≤L2≤1200 mm.

[0212] That is, the size L2 of the battery monomer 43 in the length direction thereof can be a point value of any one of 250 mm, 350 mm, 450 mm, 550 mm, 650 mm, 750 mm, 850 mm, 950 mm, 1050 mm, 1150 mm, 1200 mm or a point value between any two of them.

[0213] By setting the size L2 of the battery monomer 43 in the length direction thereof to be greater than or equal to 250 mm and less than or equal to 1200 mm, the size and weight of the battery monomer 43 can be appropriate, and also facilitate the battery monomer 43 to have a certain volume, thereby increasing the power of the battery monomer 43 and effectively occupying space, further increasing the power of the energy storage device 100.

[0214] In some embodiments, 30 mm≤L3≤90 mm.

[0215] That is, the size L3 of the battery monomer 43 in the width direction thereof can be a point value of any one of 30 mm, 35 mm, 40 mm, 55 mm, 65 mm, 75 mm, 85 mm, 90 mm or a point value between any two of them.

[0216] By setting the size L3 of the battery monomer 43 in the width direction thereof to be greater than or equal to 30 mm and less than or equal to 90 mm, the size of the battery monomer 43 can be appropriate, which is conducive to reducing manufacturing costs, and also facilitates the battery monomer 43 to have a certain volume, thereby increasing the power of the battery monomer 43 and effectively occupying space, further increasing the power of the energy storage device 100.

[0217] In some embodiments, 0.05≤L1 / L2≤1.2.

[0218] That is, the ratio of the size L1 of the battery monomer 43 in the height direction thereof to the size L2 of the battery monomer 43 in the length direction thereof is greater than or equal to 0.05 and less than or equal to 1.2.

[0219] The ratio of the dimension LI of the battery cell 43 in the height direction thereof to the dimension L2 of the battery cell 43 in the length direction thereof can be a point value of any one of 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2 or a point value between any two of them.

[0220] Here, by setting the ratio of the dimension LI of the battery cell 43 in the height direction thereof to the dimension L2 of the battery cell 43 in the length direction thereof to be greater than or equal to 0.05 and less than or equal to 1.2, the battery cell 43 in this dimension ratio range is appropriate, which can make the battery cell 43 have a certain volume, thereby improving the electric quantity of the battery cell 43 and effectively occupying the space, and further improving the electric quantity of the energy storage device 100.

[0221] In some embodiments, 0.1≤L3 / L1≤0.9.

[0222] That is, the ratio of the dimension L3 of the battery cell 43 in the width direction thereof to the dimension LI of the battery cell 43 in the height direction thereof is greater than or equal to 0.1 and less than or equal to 0.9.

[0223] The ratio of the dimension L3 of the battery cell 43 in the width direction thereof to the dimension LI of the battery cell 43 in the height direction thereof can be a point value of any one of 0.1, 0.2, 0.3, 0.35, 0.4, 0.5, 0.55, 0.6, 0.7, 0.8, 0.9 or a point value between any two of them.

[0224] Here, by setting the ratio of the dimension L3 of the battery cell 43 in the width direction thereof to the dimension LI of the battery cell 43 in the height direction thereof to be greater than or equal to 0.1 and less than or equal to 0.9, the battery cell 43 in this dimension ratio range is appropriate, which can make the battery cell 43 have a certain volume, thereby improving the electric quantity of the battery cell 43 and effectively occupying the space, and further improving the electric quantity and energy density of the energy storage device 100, and can improve the manufacturability of the battery cell 43 and reduce the manufacturing cost.

[0225] In some embodiments, 0.025≤L3 / L2≤0.36.

[0226] That is, the ratio of the dimension L3 of the battery cell 43 in the width direction thereof to the dimension L2 of the battery cell 43 in the length direction thereof is greater than or equal to 0.025 and less than or equal to 0.36.

[0227] The ratio of the dimension L3 of the battery cell 43 in the width direction thereof to the dimension L2 of the battery cell 43 in the length direction thereof can be a point value of any one of 0.025, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.36 or a point value between any two of them.

[0228] Here, by setting the ratio of the size L3 of the battery monomer 43 along its width direction to the size L2 of the battery monomer 43 along its length direction to be greater than or equal to 0.025 and less than or equal to 0.36, the battery monomer 43 in the size ratio range is appropriate, so that the battery monomer 43 has a certain volume, thereby improving the power of the battery monomer 43 and effectively occupying the space, thereby improving the power and energy density of the energy storage device 100, and the manufacturability of the battery monomer 43 can be improved, and the manufacturing cost is reduced.

[0229] In some embodiments, referring to FIGS. 3 and 4, the energy storage device 100 includes an energy storage bin 100a, the energy storage bin 100a includes a bin body 10 and components arranged in the bin body 10, and the weight of the energy storage bin 100a is M, M is less than or equal to 45 tons.

[0230] The components arranged in the bin body 10 are, for example, energy units, connecting pipelines, control modules 30, or heat management modules 20, and the like.

[0231] Here, the energy storage bin 100a refers to a cabinet that can be transported and hoisted separately.

[0232] For example, the weight of the energy storage bin 100a can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 40 tons, 45 tons, or any point value between any two of them.

[0233] In the process of hoisting the energy storage bin 100a, it is convenient for the hoisting of the related hoisting device, and convenient for the transfer work of the energy storage bin 100a.

[0234] The weight of the energy storage bin 100a is controlled to be within 45 tons, so that the energy storage bin 100a can be normally transported and hoisted in multiple transportation scenarios such as land transportation and sea transportation, to a certain extent, the problem of increasing transportation cost caused by the need to disassemble and transport the energy storage bin 100a or the need for special equipment to transfer the energy storage bin 100a due to the weight of the energy storage bin 100a exceeding the carrying limit of the road, bridge, lifting device, etc. can be avoided.

[0235] In this embodiment, by controlling the overall weight of the energy storage bin 100a to be within 45 tons, a single energy storage bin 100a can meet the requirements of some countries for transportation limits, and the integration of the energy storage bin 100a 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.

[0236] In some embodiments, referring to FIG. 5, the weight of a single battery monomer 43 is s, and 3kg≤s≤30kg.

[0237] That is, the weight s of the single battery cell 43 is greater than or equal to 3 kg and less than or equal to 30 kg.

[0238] The weight s of the single battery cell 43 can be a point value of any one of 3 kg, 5 kg, 6 kg, 7 kg, 8 kg, 9 kg, 10 kg, 12 kg, 13 kg, 15 kg, 16 kg, 17 kg, 20 kg, 22 kg, 23 kg, 25 kg, 26 kg, 28 kg, 30 kg or a point value between any two of them.

[0239] Here, by setting the weight s of the single battery cell 43 to be greater than or equal to 3 kg and less than or equal to 30 kg, the weight of the energy unit is appropriate, so that a proper amount of energy units can be placed in the bin body 10, and the energy density is moderate under the condition that the transportation demand is met.

[0240] Exemplarily, the weight of the single battery cell 43 is s, and 5 kg≤s≤25 kg.

[0241] That is, the weight s of the single battery cell 43 is greater than or equal to 5 kg and less than or equal to 25 kg.

[0242] In further improving the power of the battery cell 43 and the effective occupied space, and further improving the power and energy density of the energy storage device 100, the manufacturability of the battery cell 43 can be further improved, and the manufacturing cost can be reduced.

[0243] In some embodiments, the thermal management module 20 can be a liquid cooling unit, or an air conditioner, or a ground source cooling device or a sea liquid cooling device.

[0244] Here, it can be that part of the bin body 10 contains the thermal management module 20, or all of the bin body 10 contains the thermal management module 20.

[0245] In the embodiment in which part of the bin body 10 contains the thermal management module 20, the bin body 10 without the thermal management module 20 can manage the temperature of the energy unit through the thermal management module 20 in other bin bodies 10. Exemplarily, the energy storage device 100 includes two bin bodies 10, which are a first bin body 11 and a second bin body 12, wherein the first bin body 11 contains the thermal management module 20, the second bin body 12 does not contain the thermal management module 20, and the thermal management module 20 of the first bin body 11 can manage the temperature of the energy units of the first bin body 11 and the second bin body 12.

[0246] All the storage bodies 10 contain the thermal management modules 20, when multiple energy units are arranged in the first storage body 11 and the second storage body 12, the thermal management modules 20 in all the storage bodies 10 can jointly act to control the temperature of the multiple energy units in the first storage body 11 and the second storage body 12; or the thermal management modules 20 in each storage body 10 can act independently, that is, the thermal management modules 20 in the first storage body 11 control the temperature of the multiple energy units in the first storage body 11, and the thermal management modules 20 in the second storage body 12 control the temperature of the multiple energy units in the second storage body 12.

[0247] As an example, when the control modules 30 and the thermal management modules 20 in the first storage body 11 and the second storage body 12 can independently operate, the first storage body 11 and the internal components thereof can be considered as an independent energy storage device 100; the second storage body 12 and the internal components thereof can be considered as an independent energy storage device 100. As an example, when the control modules 30 and the thermal management modules 20 in the first storage body 11 and the second storage body 12 need to jointly control the energy units in the two storage bodies 10, the first storage body 11 and the internal components thereof, and the second storage body 12 and the internal components thereof can be considered as a common energy storage device 100. Of course, at this time, only part of the energy units can be operated, for example, only the energy units in the first storage body 11 are electrically controlled and temperature controlled to input or output electric energy, and the energy units in the second storage body 12 do not output electric energy, which can be determined according to actual use requirements.

[0248] Due to the size of the energy units, the energy units cannot be fully filled in the storage body 10. By arranging the control modules 30 and / or the thermal management modules 20 in the storage body 10, the space in the storage body 10 can be fully utilized, and the space utilization of the storage body 10 is further improved.

[0249] In addition, the control modules 30 and / or the thermal management modules 20 are installed together with the storage body 10, the pipelines and lines of the control modules 30 and / or the thermal management modules 20 are connected when delivered, which reduces the installation workload of the pipelines and lines of the control modules 30 and / or the thermal management modules 20 on site, and is beneficial to reduce the installation cost.

[0250] Of course, in other embodiments, the control modules 30 and / or the thermal management modules 20 can also be arranged outside the storage body 10.

[0251] As an example, at least part of the control modules 30 are arranged outside the storage body 10.

[0252] That is, part of the control modules 30 can be arranged outside the storage body 10, and part of the control modules 30 can be arranged inside the storage body 10; or all the control modules 30 can be arranged outside the storage body 10.

[0253] Here, by setting at least part of the control module 30 outside the bin body 10, the influence of the control module 30 on the energy unit can be reduced to a certain extent, and the control module 30 does not occupy the space in the bin body 10. In addition, it is also beneficial to maintain and replace the control module 30.

[0254] Here, the control module 30 arranged outside the bin body 10 can be connected with at least one bin body 10, or the control module 30 arranged outside the bin body 10 is arranged separately from the bin body 10, and the two are connected through a connection line or a connection pipeline.

[0255] Exemplarily, at least part of the thermal management module 20 is arranged outside the bin body 10.

[0256] That is, part of the thermal management module 20 can be arranged outside the bin body 10, and part of the thermal management module 20 can be arranged inside the bin body 10; all of the thermal management module 20 can also be arranged outside the bin body 10.

[0257] Here, by arranging at least part of the thermal management module 20 outside the bin body 10, the influence of the thermal management module 20 on the energy unit can be reduced to a certain extent, and the thermal management module 20 does not occupy the space in the bin body 10. In addition, it is also beneficial to maintain and replace the thermal management module 20.

[0258] Here, the thermal management module 20 arranged outside the bin body 10 can be connected with at least one bin body 10, or the thermal management module 20 arranged outside the bin body 10 is arranged separately from the bin body 10, and the two are connected through a connection line or a connection pipeline.

[0259] Of course, part of the structure of the thermal management module 20 can also be arranged outside the bin body 10, and another part of the structure can be arranged inside the bin body 10.

[0260] Exemplarily, the thermal management module 20 includes a heat dissipation fan, and the heat dissipation fan is arranged outside the bin body 10. For example, the thermal management module 20 includes a heat dissipation fan and a heat exchanger, and the heat dissipation fan and the heat exchanger are arranged outside the bin body 10.

[0261] In this way, it is beneficial to heat exchange between the heat dissipation fan, the heat dissipation fan and the heat exchanger and the outside, thereby improving the heat exchange efficiency.

[0262] In some embodiments, the energy storage device 100 can also not include the thermal management module 20.

[0263] In some embodiments, referring to FIGS. 4 and 6, the control module 30 includes at least one of a main control module 31, a power distribution module 32, a master control module 33, and a fire control module 34.

[0264] The energy unit and the master module 31 are electrically connected. The master module 31 and the general control module 33 are electrically connected. The master module 31, the general control module 33 and the fire control module 34 are electrically connected with the power distribution module 32.

[0265] The master module 31 is used to control the input and output of high-voltage electrical energy of the energy unit in the bin body 10. The general control module 33 is used to control the switching action of the master module 31 in the bin body 10.

[0266] The fire control module 34 is used to control the action of the fire-fighting element when the bin body 10 temperature imbalance occurs. The fire-fighting element can be a fire extinguisher, etc. The fire-fighting element can be arranged in the bin body 10.

[0267] The power distribution module 32 is used to electrically connect the master module 31, the general control module 33 and the fire control module 34, so as to maintain the normal operation of the master module 31, the general control module 33 and the fire control module 34.

[0268] Here, some bin bodies 10 can contain control modules 30, or all bin bodies 10 can contain control modules 30.

[0269] In the embodiment that some bin bodies 10 contain control modules 30, the bin bodies 10 without control modules 30 can be electrically controlled by the control modules 30 in other bin bodies 10. For example, the energy storage device 100 includes two bin bodies 10, namely a first bin body 11 and a second bin body 12, wherein the first bin body 11 contains a control module 30, and the second bin body 12 contains an energy unit. The control module 30 of the first bin body 11 can electrically control the energy unit of the second bin body 12.

[0270] When all bin bodies 10 contain control modules 30, and multiple energy units are arranged in the first bin body 11 and the second bin body 12, the control modules 30 in all bin bodies 10 can jointly act to electrically control the multiple energy units in the first bin body 11 and the second bin body 12; or the control modules 30 in each bin body 10 can act independently, i.e. the control module 30 in the first bin body 11 electrically controls the multiple energy units in the first bin body 11, and the control module 30 in the second bin body 12 electrically controls the multiple energy units in the second bin body 12.

[0271] Here, in the embodiment that the energy storage device 100 includes multiple control modules 30, the multiple control modules 30 can be the same or different.

[0272] Exemplarily, each of the bin bodies 10 is provided with a control module 30, that is, the control module 30 corresponds to the bin body 10 one by one, one control module 30 corresponds to control the input and output of the electric energy of the energy unit in one bin body 10, thus, it is beneficial to realize the electrical control of the energy unit by the control module 30.

[0273] Exemplarily, part of the bin bodies 10 are provided with control modules 30, and the other part of the bin bodies 10 are not provided with control modules 30, that is, one control module 30 corresponds to control the electric energy input or output of the energy unit in multiple bin bodies 10. For example, when the number of bin bodies 10 is two, one of the bin bodies 10 is provided with a control module 30, and the other bin body 10 is not provided with a control module 30, and the control module 30 corresponds to control the electric energy input or output of the energy unit in the two bin bodies 10.

[0274] Of course, one bin body 10 can have multiple control modules 30, and one bin body 10 can have multiple energy units, multiple energy units are connected in series to form a battery cluster, multiple battery clusters are connected in parallel, and one control module 30 can correspond to control one or more battery clusters.

[0275] Thus, it is beneficial to increase the space in the bin body 10 containing the thermal management module 20, so as to reduce the influence of the thermal management module 20 on the accommodation volume of the energy unit, that is, to make the bin body 10 have enough space to accommodate the energy unit and the thermal management module 20. In addition, a higher refrigeration capacity thermal management module 20 can be placed, and the thermal management capacity is improved.

[0276] In order to facilitate the rapid installation of customers on site, the control module 30 and the thermal management module 20 are integrated inside the bin body 10, and after the bin body 10 is stacked on site, it can be connected with the PCS and the EMS, which is beneficial to reduce the workload of on-site assembly, improve the assembly efficiency, and facilitate the use of customers.

[0277] 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 the protective charging and discharging of the battery.

[0278] EMS (Energy Management System) is a collection of software and hardware used to monitor, control, analyze and optimize energy systems. It realizes efficient management and optimal allocation of energy by real-time monitoring and intelligent control of various links of energy production, distribution and consumption.

[0279] In some embodiments, the total weight of the energy storage device 100 is M, the total weight of the battery monomer 43 in the energy storage device 100 is M1, (M1 / M) × 100% ≥ 60%.

[0280] Exemplarily, (M1 / M) × 100% can be any one of 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 90% or a point value between any two of them.

[0281] In this way, on the one hand, the weight ratio of the battery monomer 43 in the energy storage device 100 per unit volume can be improved, and the electric quantity of the energy storage device 100 per unit volume can be improved; on the other hand, during the transportation of the energy storage device 100, more battery monomers 43 that contribute to the energy storage capacity and are difficult to produce at the destination are transported, while other structures can be produced at a location close to the destination without transportation or with reduced transportation. After the storage body 10 is assembled into the energy storage device 100, it is beneficial to reduce the transportation cost of the assembled energy storage device 100.

[0282] In some embodiments, (M1 / M) × 100% ≥ 80%.

[0283] Exemplarily, (M1 / M) × 100% can be any one of 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89% or 90% or a point value between any two of them.

[0284] In this way, the transportation cost of the assembled energy storage device 100 is further reduced.

[0285] In some embodiments, the volume of each storage body 10 is V, and the total volume of the battery monomer 43 in each storage body 10 is V1, 20% ≤ (V1 / V) × 100% ≤ 65%.

[0286] Here, in the embodiment in which the number of storage bodies 10 is one, "the volume of each storage body 10 is V, and the total volume of the battery monomer 43 in each storage body 10 is V1" means that the volume of the storage body 10 is V, and the total volume of the battery monomer 43 in the storage body 10 is V1.

[0287] In the embodiment in which the number of the cartridge bodies 10 is multiple, "the volume of each cartridge body 10 is V, and the total volume of the battery cells 43 in each cartridge body 10 is V1" means that the volume of each of the multiple cartridge bodies 10 is V, and the total volume of the battery cells 43 in each of the multiple cartridge bodies 10 is V1.

[0288] The battery cell 43 includes a shell, and the volume of the battery cell 43 is the volume of the shell. For example, the battery cell 43 is a square shell battery cell 43, and the product of the length, width and height of the square shell battery cell 43 is the product of the length, width and height of the shell.

[0289] In the embodiment in which the battery cell 43 further includes an electrode terminal, the electrode terminal is arranged on the shell and partially protrudes from the shell, the electrode terminal is electrically connected with the electrode assembly, and the part of the electrode terminal protruding from the shell is not included in the volume of the battery cell 43.

[0290] (V1 / V) x 100% can be any one of 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, 60%, or 65%, or a point value between any two of them.

[0291] On the one hand, the volume ratio of the battery cell 43 in the unit volume of the cartridge body 10 can be improved, and the electric quantity of the unit volume of the energy storage device 100 can be improved; on the other hand, during the transportation of the energy storage device 100, more battery cells 43 that contribute to the storage energy and have a higher production difficulty and cannot be produced at the destination are transported, and other functional elements of the energy storage device 100 such as the control element can be produced at a place close to the destination without being transported or with reduced transportation, which is conducive to reducing the transportation cost of the assembled energy storage device 100.

[0292] In some embodiments, 40%≤(V1 / V) x 100%≤65%.

[0293] Further conducive to reducing the transportation cost of the assembled energy storage device 100.

[0294] In some embodiments, the volume of each cartridge body 10 is V, the volume of a single battery cell 43 is V2, and 0.000063≤(V2 / V)≤0.00061.

[0295] (V2 / V) x 100% can be a point value of any one of 0.000063, 0.00007, 0.00008, 0.00009, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.00061 or a point value between any two of them.

[0296] On the one hand, the volume ratio of the battery monomer 43 in the unit volume of the warehouse body 10 can be increased, and the electric quantity of the energy storage device 100 per unit volume can be increased; on the other hand, during the transportation of the energy storage device 100, more battery monomers 43 that contribute to the storage energy and have a higher production difficulty and cannot be produced at the destination are transported, and other functional elements of the energy storage device 100 such as control elements can be produced at a place close to the destination without being transported or reducing transportation, and after the warehouse body 10 is assembled into the energy storage device 100, the transportation cost of the assembled energy storage device 100 can be reduced.

[0297] In some embodiments, the number of battery monomers 43 in each warehouse body 10 is p, and 800≤p≤4160.

[0298] Here, it refers to the number of battery monomers 43 in a single warehouse body 10.

[0299] The number of battery monomers 43 can be a point value of any one of 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, 2500, 2700, 2800, 3000, 3100, 3500, 3700, 3800, 3900, 4000, 4100, 4120, 4160 or a point value between any two of them.

[0300] Here, by setting the number p of battery monomers 43 to be greater than or equal to 800 and less than or equal to 4160, the number of battery monomers 43 is appropriate, so that a proper amount of battery monomers 43 can be placed in the warehouse body 10, and the energy density is moderate under the condition of meeting the transportation demand.

[0301] In some embodiments, each warehouse body 10 contains a plurality of battery layers, the plurality of battery layers are arranged along the height direction of the warehouse body 10, the plurality of battery monomers 43 in each battery layer are arranged in rows and columns, the plurality of battery monomers 43 in each row are arranged along the length direction of the warehouse body 10, the plurality of battery monomers 43 in each column are arranged along the width direction of the warehouse body 10, and the size of the length direction of the warehouse body 10 is greater than the size of the width direction of the warehouse body 10. The height direction of the battery monomer 43 is parallel to the height direction of the warehouse body 10, the length direction of the battery monomer 43 is parallel to the length direction of the warehouse body 10, and the width direction of the battery monomer 43 is parallel to the width direction of the warehouse body 10.

[0302] Here, the plurality of battery cells 43 of each battery layer are arranged in rows and columns, that is, the battery cells 43 can be arranged directly in the bin body 10. Exemplarily, the plurality of battery cells 43 are divided into a plurality of battery layers, and the plurality of battery cells 43 of each battery layer are arranged in rows and columns.

[0303] Exemplarily, the height direction of the battery cell 43 can be parallel to the height direction of the bin body 10, the width direction of the battery cell 43 can be parallel to the length direction of the bin body 10, and the length direction of the battery cell 43 can be parallel to the width direction of the bin body 10.

[0304] Of course, the height direction of the battery cell 43 can be parallel to the height direction of the bin body 10, the length direction of the battery cell 43 can be parallel to the length direction of the bin body 10, and the width direction of the battery cell 43 can be parallel to the width direction of the bin body 10.

[0305] Exemplarily, the number of layers of each battery layer of the bin body 10 is 3-14 layers.

[0306] The number of layers of the battery layer can be 3 layers, 4 layers, 5 layers, 6 layers, 7 layers, 8 layers, 9 layers, 10 layers, 11 layers, 12 layers, 13 layers, 14 layers, etc.

[0307] Exemplarily, each battery layer includes 4-20 columns of battery cells 43.

[0308] The number of columns of battery cells 43 included in each battery layer can be any one of 4 columns, 5 columns, 8 columns, 9 columns, 10 columns, 15 columns, 18 columns, 20 columns, or a point value between any two of them.

[0309] Exemplarily, each battery layer includes 10-60 rows of battery cells 43.

[0310] The number of rows of battery cells 43 included in each battery layer can be any one of 10 rows, 15 rows, 18 rows, 20 rows, 22 rows, 25 rows, 28 rows, 30 rows, 32 rows, 35 rows, 40 rows, 45 rows, 48 rows, 50 rows, 52 rows, 55 rows, 58 rows, 60 rows, or a point value between any two of them.

[0311] Here, by setting the number of layers of each battery layer of the bin body 10 to 3-14 layers, each battery layer includes 4-20 columns of battery cells 43, and each battery layer includes 10-60 rows of battery cells 43, so that a suitable amount of battery cells 43 can be placed in the bin body 10, the space utilization rate is improved, and the energy density is moderate under the condition of meeting the transportation demand.

[0312] In some embodiments, each of the battery bodies 10 contains a plurality of battery layers arranged along the height direction of the battery body 10, and each of the battery layers contains a plurality of battery cells 43 arranged in rows and columns, the plurality of battery cells 43 in each row are arranged along the length direction of the battery body 10, the plurality of battery cells 43 in each column are arranged along the width direction of the battery body 10, and the length direction of the battery body 10 is larger than the width direction of the battery body 10. The height direction of the battery cell 43 is parallel to the height direction of the battery body 10, the width direction of the battery cell 43 is parallel to the length direction of the battery body 10, and the length direction of the battery cell 43 is parallel to the width direction of the battery body 10.

[0313] Exemplarily, each of the battery layers contains 50-260 columns of battery cells 43.

[0314] The number of columns of battery cells 43 in each of the battery layers can be a point value of any one of 50 columns, 80 columns, 100 columns, 120 columns, 130 columns, 150 columns, 180 columns, 200 columns, 230 columns, 250 columns, 260 columns, or a point value between any two of them.

[0315] Exemplarily, each of the battery layers contains 1-10 rows of battery cells 43.

[0316] The number of rows of battery cells 43 in each of the battery layers can be a point value of any one of 1 row, 3 rows, 5 rows, 6 rows, 8 rows, 10 rows, or a point value between any two of them.

[0317] Here, by setting the number of layers of battery layers in each of the battery bodies 10 to 3-14 layers, the number of columns of battery cells 43 in each of the battery layers to 50-260 columns, and the number of rows of battery cells 43 in each of the battery layers to 1-10 rows, the appropriate amount of battery cells 43 can be placed in the battery body 10, the space utilization is improved, and the energy density is moderate under the condition of meeting the transportation demand.

[0318] In some embodiments, referring to FIGS. 4 and 5, each of the battery bodies 10 is provided with a plurality of battery devices 40, and each of the battery devices 40 contains a box body 41 and a plurality of battery cells 43.

[0319] Here, the box body 41 forms a closed space inside to accommodate the battery cells 43.

[0320] Exemplarily, the size of the box body 41 along the height direction of the box body 41 is L4, and 100mm≤L4≤1000mm.

[0321] The dimension L4 of the box 41 in the height direction of the box 41 can be a point value of any one of 100 mm, 150 mm, 200 mm, 220 mm, 250 mm, 300 mm, 400 mm, 550 mm, 650 mm, 750 mm, 800 mm, 950 mm, 1000 mm or a point value between any two of them.

[0322] By setting the dimension L4 of the box 41 in the height direction of the box 41 to be greater than or equal to 100 mm and less than or equal to 1000 mm, the dimension of the box 41 in the height direction of the box 41 can be appropriate, the space utilization can be improved, and the energy density can be moderate in the case of meeting the transportation demand.

[0323] Exemplarily, the dimension of the box 41 in the length direction of the box 41 is L5, 600 mm≤L5≤2400 mm.

[0324] The dimension L4 of the box 41 in the height direction of the box 41 can be a point value of any one of 100 mm, 150 mm, 200 mm, 220 mm, 250 mm, 300 mm, 400 mm, 550 mm, 650 mm, 750 mm, 800 mm, 950 mm, 1000 mm or a point value between any two of them.

[0325] Further, the space utilization can be improved, and the energy density can be further improved in the case of meeting the transportation demand.

[0326] Exemplarily, the dimension of the box 41 in the length direction of the box 41 is L5, 600 mm≤L5≤2400 mm.

[0327] The dimension L5 of the box 41 in the length direction of the box 41 can be a point value of any one of 600 mm, 650 mm, 750 mm, 800 mm, 950 mm, 1050 mm, 1000 mm, 1200 mm, 1500 mm, 1650 mm, 1700 mm, 1800 mm, 1900 mm, 2000 mm, 2200 mm, 2400 mm or a point value between any two of them.

[0328] By setting the dimension L5 of the box 41 in the length direction of the box 41 to be greater than or equal to 600 mm and less than or equal to 2400 mm, the dimension of the box 41 in the length direction of the box 41 can be appropriate, the space utilization can be improved, and the energy density can be moderate in the case of meeting the transportation demand.

[0329] Exemplarily, the dimension of the box 41 in the length direction of the box 41 is L5, 1000 mm≤L5≤2100 mm.

[0330] The dimension L5 of the box 41 in the length direction of the box 41 can be a point value of any one of 1000 mm, 1100 mm, 1300 mm, 1400 mm, 1750 mm, 1850 mm, 1950 mm, 2050 mm, 2100 mm or a point value between any two of them.

[0331] Further, it is beneficial to improve the space utilization and meet the transportation demand, and further improve the energy density.

[0332] Exemplarily, the dimension L6 of the box 41 in the width direction of the box 41 is 500 mm≤L6≤2500 mm.

[0333] The dimension L6 of the box 41 in the width direction of the box 41 can be a point value of any one of 500 mm, 550 mm, 600 mm, 700 mm, 800 mm, 950 mm, 1050 mm, 1000 mm, 1200 mm, 1500 mm, 1650 mm, 1700 mm, 1800 mm, 1900 mm, 2000 mm, 2100 mm, 2300 mm, 2500 mm or a point value between any two of them.

[0334] By setting the dimension L6 of the box 41 in the width direction of the box 41 to be greater than or equal to 500 mm and less than or equal to 2500 mm, the dimension of the box 41 in the width direction of the box 41 is appropriate, the space utilization is improved, and the energy density is moderate under the condition of meeting the transportation demand.

[0335] Exemplarily, the dimension L6 of the box 41 in the width direction of the box 41 is 800 mm≤L6≤2000 mm.

[0336] The dimension L6 of the box 41 in the width direction of the box 41 can be a point value of any one of 800 mm, 900 mm, 1000 mm, 1100 mm, 1300 mm, 1400 mm, 1750 mm, 1850 mm, 1900 mm, 2000 mm or a point value between any two of them.

[0337] Further, it is beneficial to improve the space utilization and meet the transportation demand, and further improve the energy density.

[0338] In some embodiments, the volume of each bin body 10 is V, and the total volume of the box 41 in each bin body 10 is V3, 40%≤(V3 / V)×100%≤65%.

[0339] Exemplarily, the box 41 is a cuboid structure, and the volume of the box 41 is equal to the product of the length, width and height of the box 41.

[0340] (V3 / V) x 100% can be 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, or any point value between any two of them.

[0341] When (V3 / V) x 100% is greater than or equal to 40%, the volume ratio of the box body 41 in the unit volume of the bin body 10 can be increased, and the energy density of the energy storage device 100 can be increased. When (V3 / V) x 100% is less than or equal to 65%, the bin body 10 can have sufficient volume of structural members to maintain the structural strength of the bin body 10. Therefore, when 40%≤(V3 / V) x 100%≤65%, the energy density of the energy storage device 100 and the structural strength of the bin body 10 can be considered, and the bin body 10 has stronger practicability.

[0342] In some embodiments, referring to FIG. 4, each bin body 10 contains at least one battery layer, and the at least one battery layer is arranged along the height direction of the bin body 10. The plurality of battery devices 40 in each battery layer is arranged in rows and columns. The plurality of battery devices 40 in each row is arranged along the length direction of the bin body 10. The plurality of battery devices 40 in each column is arranged along the width direction of the bin body 10. The length of the bin body 10 is greater than the width of the bin body 10.

[0343] Here, the plurality of battery devices 40 in each battery layer is arranged in rows and columns, that is, the battery monomer 43 is arranged in the bin body 10 after being composed into the battery device 40. Exemplarily, the plurality of battery devices 40 is divided into a plurality of battery layers, and the plurality of battery devices 40 in each battery layer is arranged in rows and columns.

[0344] Exemplarily, the number of layers of the battery layer of each bin body 10 is 1-5 layers.

[0345] The number of layers of the battery layer can be 1 layer, 2 layers, 3 layers, 4 layers, 5 layers, etc.

[0346] Exemplarily, each battery layer includes 2-4 columns of battery devices 40.

[0347] The number of columns of battery devices 40 included in each battery layer can be 2 columns, 3 columns, 4 columns, etc.

[0348] Exemplarily, each battery layer includes 1-2 rows of battery devices 40.

[0349] The number of rows of battery devices 40 included in each battery layer can be 1 row or 2 rows.

[0350] Here, the number of layers of the battery layer of each of the housings 10 is 1-5 layers, each of the battery layers includes 2-4 columns of the battery devices 40, and each of the battery layers includes 1-2 rows of the battery devices 40, so that an appropriate amount of the battery devices 40 can be placed in the housing 10, the space utilization is improved, and the energy density is moderate under the condition that the transportation demand is met.

[0351] In some embodiments, the total weight of the energy storage device 100 is M, the total weight of the battery devices 40 in the energy storage device 100 is M2, and 70%≤(M2 / M)×100%≤90%.

[0352] Here, the total weight of the energy storage device 100 refers to the sum of the total weight of all the housings 10 and the total weight of all the components in the housings 10.

[0353] (M2 / M)×100% can be a point value of any one of 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90% or a point value between any two of them.

[0354] When (M2 / M)×100%≥70%, the weight ratio of the battery devices 40 in the energy storage device 100 per unit volume can be improved, and the energy density of the energy storage device 100 can be improved; when (M2 / M)×100%≤90%, the structural strength of the housing 10 can be maintained. Therefore, when 70%≤(M2 / M)×100%≤90%, the energy density of the energy storage device 100 and the structural strength of the housing 10 can be considered, and the practicability of the housing 10 is stronger.

[0355] In some embodiments, a plurality of battery modules 42 are arranged in each of the housings 10, and the battery module 42 includes a plurality of energy units.

[0356] The battery module 42 is formed by arranging and fixing a plurality of battery monomers 43 to form an independent module. As an example, the battery module 42 can be formed by bundling a plurality of battery monomers 43 with a cable tie.

[0357] Exemplarily, the size of the battery module 42 along the height direction of the housing 10 is L7, and 50mm≤L7≤1000mm.

[0358] The size L7 of the battery module 42 along the height direction of the housing 10 can be a point value of any one of 50mm, 75mm, 100mm, 150mm, 200mm, 220mm, 250mm, 300mm, 400mm, 550mm, 650mm, 750mm, 800mm, 950mm, 1000mm or a point value between any two of them.

[0359] By setting the dimension L7 of the battery module 42 along the height direction of the bin body 10 to be greater than or equal to 50 mm and less than or equal to 1000 mm, the dimension of the battery module 42 along the height direction of the bin body 10 can be appropriate, the space utilization can be improved, and the energy density can be moderate in the case of meeting the transportation requirements.

[0360] Exemplarily, 150 mm≤L7≤550 mm.

[0361] The dimension L7 of the battery module 42 along the height direction of the bin body 10 can be a point value of any one of 150 mm, 200 mm, 260 mm, 320 mm, 380 mm, 420 mm, 460 mm, 480 mm, 500 mm, 520 mm, 550 mm or a point value between any two of them.

[0362] Further, the space utilization can be improved, and the energy density can be further improved in the case of meeting the transportation requirements.

[0363] Exemplarily, the dimension of the battery module 42 along the length direction of the bin body 10 is L8, and 200 mm≤L8≤2400 mm.

[0364] The dimension L8 of the battery module 42 along the length direction of the bin body 10 can be a point value of any one of 200 mm, 250 mm, 300 mm, 350 mm, 450 mm, 500 mm, 550 mm, 600 mm, 650 mm, 750 mm, 800 mm, 950 mm, 1050 mm, 1000 mm, 1200 mm, 1500 mm, 1650 mm, 1700 mm, 1800 mm, 1900 mm, 2000 mm, 2200 mm, 2400 mm or a point value between any two of them.

[0365] By setting the dimension L8 of the battery module 42 along the length direction of the bin body 10 to be greater than or equal to 200 mm and less than or equal to 2400 mm, the dimension of the battery module 42 along the length direction of the bin body 10 can be appropriate, the space utilization can be improved, and the energy density can be moderate in the case of meeting the transportation requirements.

[0366] Exemplarily, 1000 mm≤L8≤2100 mm.

[0367] The dimension L8 of the battery module 42 along the length direction of the bin body 10 can be a point value of any one of 1000 mm, 1100 mm, 1300 mm, 1400 mm, 1750 mm, 1850 mm, 1950 mm, 2050 mm, 2100 mm or a point value between any two of them.

[0368] Further, the space utilization is improved, the transportation demand is met, and the energy density is further improved.

[0369] The dimension of the battery module 42 along the width direction of the bin body 10 is L9, and 200 mm≤L9≤2500 mm.

[0370] The dimension L9 of the battery module 42 along the width direction of the bin body 10 can be a point value of any one of 200 mm, 250 mm, 300 mm, 350 mm, 450 mm, 500 mm, 550 mm, 600 mm, 700 mm, 800 mm, 950 mm, 1050 mm, 1000 mm, 1200 mm, 1500 mm, 1650 mm, 1700 mm, 1800 mm, 1900 mm, 2000 mm, 2100 mm, 2300 mm, 2500 mm or a point value between any two of them.

[0371] By setting the dimension L9 of the battery module 42 along the width direction of the bin body 10 to be greater than or equal to 200 mm and less than or equal to 2500 mm, the dimension of the battery module 42 along the width direction of the bin body 10 is appropriate, the space utilization is improved, the transportation demand is met, and the energy density is moderate.

[0372] Exemplarily, 800 mm≤L9≤2000 mm.

[0373] The dimension L9 of the battery module 42 along the width direction of the bin body 10 can be a point value of any one of 800 mm, 900 mm, 1000 mm, 1100 mm, 1300 mm, 1400 mm, 1750 mm, 1850 mm, 1900 mm, 2000 mm or a point value between any two of them.

[0374] Further, the space utilization is improved, the transportation demand is met, and the energy density is further improved.

[0375] In some embodiments, each bin body 10 contains at least one battery layer, the at least one battery layer is arranged along the height direction of the bin body 10, and the plurality of battery modules 42 of each battery layer is arranged in a row-column manner, the plurality of battery modules 42 in each row is arranged along the length direction of the bin body 10, and the plurality of battery modules 42 in each column is arranged along the width direction of the bin body 10.

[0376] Here, the plurality of battery modules 42 of each battery layer is arranged in a row-column manner, that is, the battery monomer 43 is arranged in the bin body 10 after being composed into the battery module 42. Exemplarily, the plurality of battery modules 42 is divided into a plurality of battery layers, and the plurality of battery modules 42 of each battery layer is arranged in a row-column manner.

[0377] Exemplarily, the number of layers of the battery layer of each bin body 10 is 1-14 layers.

[0378] The number of layers of the battery layer can be 1 layer, 2 layers, 3 layers, 4 layers, 5 layers, 6 layers, 7 layers, 8 layers, 9 layers, 10 layers, 11 layers, 12 layers, 13 layers, 14 layers, etc.

[0379] Exemplarily, each battery layer includes 2-20 columns of battery modules 42.

[0380] The number of columns of battery modules 42 included in each battery layer can be any one of 1 column, 2 columns, 4 columns, 5 columns, 8 columns, 9 columns, 10 columns, 15 columns, 18 columns, 20 columns, or a point value between any two of them.

[0381] Exemplarily, each battery layer includes 1-10 rows of battery modules 42.

[0382] The number of rows of battery modules 42 included in each battery layer can be 1 row, 2 rows, 3 rows, 4 rows, 5 rows, 6 rows, 7 rows, 8 rows, 9 rows, 10 rows, etc.

[0383] Here, by setting the number of layers of the battery layer of each bin body 10 to be 1-14 layers, the number of columns of battery modules 42 included in each battery layer to be 2-20 columns, and the number of rows of battery modules 42 included in each battery layer to be 1-10 rows, a suitable amount of battery modules 42 can be placed in the bin body 10, the space utilization is improved, and the energy density is moderate under the condition that the transportation demand is met.

[0384] In some embodiments, referring to FIG. 3, the energy of the energy storage device 100 is E, the size of the bin body 10 along the length direction of the bin body 10 is a, the size of the bin body 10 along the width direction of the bin body 10 is b, 250KW / m 2 ≤E / (a×b)≤700KW / m 2 .

[0385] E / (a×b) can be 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 / m2 650KW / m 2 700KW / m 2 , or a point value between any two of the above.

[0386] The energy E can be obtained from the nameplate of the energy storage device 100.

[0387] When E / (a×b)≥250KW / m 2 , the energy storage device 100 can have a larger energy density, improving the practicality of the energy storage device 100; when E / (a×b)≤700KW / m 2 , the risk of the mass of the bin body 10 being too large to crush other bin bodies 10 can be reduced, facilitating transportation of the bin body 10. Therefore, when 250KW / m 2 ≤E / (a×b)≤700KW / m 2 , the energy density of the energy storage device 100 and the mass of the bin body 10 are considered, improving the practicality of the energy storage device 100 and facilitating transportation of the energy storage device 100.

[0388] In some embodiments, 450KW / m 2 ≤E / (a×b)≤600KW / m 2 .

[0389] E / (a×b) can be 450KW / m 2 , 455KW / m 2 , 460KW / m 2 , 465KW / m 2 , 470KW / m 2 , 475KW / m 2 , 480KW / m 2 , 485KW / m 2 , 490KW / m 2 , 495KW / m 2 , 500KW / m 2 , 505KW / m 2 , 510KW / m 2 , 515KW / m 2 , 520KW / m 2 , 530KW / m 2 , 540KW / m 2 , 550KW / m 2 , 600KW / m 2 , or a point value between any two of the above.

[0390] As an example, E / (a×b) = 490KW / m 2The energy density of the energy storage device 100 and the mass of the bin body 10 can be further improved, and the transportation of the energy storage device 100 is facilitated.

[0391] Exemplarily, the bin body 10 has necessary doors or sealing plates, wire harness pipeline connection interfaces and the like in addition to the structure thereof. In the bin body 10 of the independent energy bin type, in addition to necessary structural components, wire harnesses and fire-fighting equipment, the main space in the bin body 10 is used for storing the battery monomers 43, the battery modules 42 or the battery devices 40 formed by the battery monomers 43. In the integrated energy storage product, in addition to the above-mentioned components, the main control box, the total control box, the water cooling unit, the fire-fighting control, the power distribution control and the like are further included. These systems are located at the upper, lower, left and right sides of the bin body 10.

[0392] The above only describes the preferred embodiments of the present disclosure and is not intended to limit the present disclosure. The present disclosure can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure are included in the protection scope of the present disclosure.

Claims

1. An energy storage device comprising: At least one warehouse body, wherein the height of each warehouse body is smaller than the height of a standard container, the length of each warehouse body is consistent with the length of the standard container, and the width of each warehouse body is consistent with the width of the standard container; a plurality of energy units, wherein the plurality of energy units are accommodated in the at least one storage body; The energy unit includes a battery cell, the dimension of the battery cell along the height direction of the battery cell is L1, the dimension of the battery cell along the length direction of the battery cell is L2, and the dimension of the battery cell along the width direction of the battery cell is L3, wherein L1 is greater than or equal to 50 mm and less than or equal to 300 mm; L2 is greater than or equal to 200 mm and less than or equal to 1500 mm; L3 is greater than or equal to 20 mm and less than or equal to 100 mm.

2. The energy storage device according to claim 1, wherein 150mm≤L1≤260mm; and / or, 250mm≤L2≤1200mm; and / or, 30mm≤L3≤90mm.

3. The energy storage device according to claim 1 or 2, wherein: 0.05≤L1 / L2≤1.2; and / or, 0.1≤L3 / L1≤0.9; and / or, 0.025≤L3 / L2≤0.

36.

4. The energy storage device according to any one of claims 1 to 3, wherein: The weight of a single battery cell is s, 3kg≤s≤30kg.

5. The energy storage device according to claim 4, wherein: 5kg≤s≤25kg.

6. The energy storage device according to any one of claims 1 to 5, wherein: The volume of each of the compartments is V, the total volume of the battery cells in each of the compartments is V1, and 20%≤(V1 / V)×100%≤65%.

7. The energy storage device according to claim 6, wherein: 40%≤(V1 / V)×100%≤65%.

8. The energy storage device according to any one of claims 1 to 7, wherein: The volume of each of the compartments is V, the volume of a single battery cell is V2, and 0.000063≤(V2 / V)≤0.00061.

9. The energy storage device according to any one of claims 1 to 8, wherein: The number of the battery cells in each of the compartments is p, and 800≤p≤4160.

10. The energy storage device according to any one of claims 1 to 9, wherein: Each of the storage bins contains a plurality of battery layers, the plurality of battery layers are arranged along the height direction of the storage bin, the plurality of battery cells in each battery layer are arranged in rows and columns, the plurality of battery cells in each row are arranged along the length direction of the storage bin, the plurality of battery cells in each column are arranged along the width direction of the storage bin, and the length direction of the storage bin is greater than the width direction of the storage bin; the height direction of the battery cells is parallel to the height direction of the storage bin, the length direction of the battery cells is parallel to the length direction of the storage bin, and the width direction of the battery cells is parallel to the width direction of the storage bin; The number of battery layers in each of the bins is 3-14 layers; and / or, Each of the battery layers includes 4-20 columns of battery cells; and / or, Each of the battery layers includes 10-60 rows of battery cells.

11. The energy storage device according to any one of claims 1 to 9, wherein: Each of the storage bins contains a plurality of battery layers, the plurality of battery layers are arranged along the height direction of the storage bin, the plurality of battery cells in each battery layer are arranged in rows and columns, the plurality of battery cells in each row are arranged along the length direction of the storage bin, the plurality of battery cells in each column are arranged along the width direction of the storage bin, and the length direction of the storage bin is greater than the width direction of the storage bin; the height direction of the battery cells is parallel to the height direction of the storage bin, the width direction of the battery cells is parallel to the length direction of the storage bin, and the length direction of the battery cells is parallel to the width direction of the storage bin; The number of battery layers in each of the bins is 3-14 layers; and / or, Each of the battery layers includes 50-260 rows of battery cells; and / or, Each of the battery layers includes 1 to 10 rows of battery cells.

12. The energy storage device according to any one of claims 1 to 11, wherein: The total weight of the energy storage device is M, the total weight of the battery cells in the energy storage device is M1, and (M1 / M)×100%≥60%.

13. The energy storage device according to claim 12, wherein: (M1 / M)×100%≥80%.

14. The energy storage device according to any one of claims 1 to 9, wherein: A plurality of battery devices are provided in each of the compartments, wherein the battery devices include a box body and a plurality of battery cells, and the plurality of battery cells are accommodated in the box body; The dimension of the box along the height direction of the box is L4, 100mm≤L4≤1000mm; and / or, The dimension of the box along the length direction of the box is L5, 600mm≤L5≤2400mm; and / or, The dimension of the box along the width direction of the box is L6, 500mm≤L6≤2500mm.

15. The energy storage device according to claim 14, wherein: 180mm≤L4≤550mm; and / or, 1000mm≤L5≤2100mm; and / or, 800mm≤L6≤2000mm.

16. The energy storage device according to claim 14 or 15, wherein: The volume of each of the silos is V, the total volume of the boxes in each of the silos is V3, and 40%≤(V3 / V)×100%≤65%.

17. The energy storage device according to any one of claims 14 to 16, wherein: Each of the compartments contains at least one battery layer, the at least one battery layer is arranged along the height direction of the compartment, the multiple battery devices in each battery layer are arranged in rows and columns, the multiple battery devices in each row are arranged along the length direction of the compartment, and the multiple battery devices in each column are arranged along the width direction of the compartment, and the length direction of the compartment is greater than the width direction of the compartment; The number of battery layers in each of the bins is 1-5; and / or, Each of the battery layers includes 2-4 columns of the battery devices; and / or, Each of the battery layers includes 1-2 rows of the battery devices.

18. The energy storage device according to any one of claims 14 to 17, wherein: The total weight of the energy storage device is M, the total weight of the battery device in the energy storage device is M2, and 70%≤(M2 / M)×100%≤90%.

19. The energy storage device according to any one of claims 1 to 9, wherein: A plurality of battery modules are provided in each of the compartments, and the battery modules include a plurality of the energy units; The dimension of the battery module along the height direction of the warehouse body is L7, 50mm≤L7≤1000mm; and / or, The dimension of the battery module along the length direction of the warehouse body is L8, 200mm≤L8≤2400mm; and / or, The dimension of the battery module along the width direction of the warehouse body is L9, 200mm≤L9≤2500mm.

20. The energy storage device according to claim 19, wherein: 150mm≤L7≤550mm; and / or, 1000mm≤L8≤2100mm; and / or, 800mm≤L9≤2000mm.

21. The energy storage device according to claim 19 or 20, wherein: Each of the bins contains at least one battery layer, the at least one battery layer is arranged along the height direction of the bin, and the multiple battery modules of each battery layer are arranged in rows and columns, the multiple battery modules in each row are arranged along the length direction of the bin, and the multiple battery modules in each column are arranged along the width direction of the bin; The number of battery layers in each of the bins is 1-14 layers; and / or, Each of the battery layers includes 2-20 columns of battery modules; and / or, Each of the battery layers includes 1 to 10 rows of battery modules.

22. The energy storage device according to any one of claims 1 to 21, wherein: The energy storage device includes an energy storage bin, which includes a bin body and components disposed within the bin body. The weight of the energy storage bin is M, which is less than or equal to 45 tons.

23. The energy storage device according to any one of claims 1 to 22, wherein: The energy of the energy storage device is E, the size of the warehouse along the length direction of the warehouse is a, and the size of the warehouse along the width direction of the warehouse is b, 250KW / m 2 ≤E / (a×b)≤700KW / m 2 .

24. The energy storage device according to claim 23, wherein: 450KW / m 2 ≤E / (a×b)≤600KW / m 2 。 25. The energy storage device according to any one of claims 1 to 24, wherein: The dimension of each warehouse body along the height direction is greater than or equal to one third of the dimension of a standard container along the height direction.

26. The energy storage device according to any one of claims 1 to 25, wherein: The standard container is a 20-foot standard container, and the height of the standard container is 2896 mm, 2591 mm or 2438 mm.

27. The energy storage device according to any one of claims 1 to 26, wherein: There are multiple warehouse bodies, and the multiple warehouse bodies are arranged along the height direction of the standard container. The energy units are all contained in the multiple warehouse bodies; the energy storage device includes a control module, and the control module includes a master control module, and the master control module is used to electrically control the energy units of the multiple warehouse bodies.

28. The energy storage device according to claim 27, wherein: The energy storage device includes a thermal management module, which is used to manage the temperature of the energy units of the plurality of bins.

29. The energy storage device according to claim 27 or 28, wherein: The number of the energy units contained in each of the compartments is the same; or, a plurality of the energy units are connected in parallel and / or in series to form a battery cluster, and the number of the battery clusters contained in each of the compartments is the same.

30. An energy storage system comprising a power conversion device and the energy storage device according to any one of claims 1 to 29, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

31. A charging network comprising a charging pile and the energy storage device according to any one of claims 1 to 29 or the energy storage system according to claim 30, wherein the energy storage device is used to provide electrical energy to the charging pile.

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