Energy storage device, energy storage system and charging network

Abstract

Provided in the embodiments of the present disclosure are an energy storage device, an energy storage system and a charging network. The energy storage device comprises a first energy storage compartment, a second energy storage compartment and an accommodating compartment, wherein the first energy storage compartment comprises a first compartment body and a plurality of energy units; the second energy storage compartment comprises a second compartment body and a plurality of energy units; the accommodating compartment comprises a third compartment body, and at least part of a control module and / or at least part of a thermal management module, which is / are arranged in the third compartment body, the control module being used for performing electrical control on the plurality of energy units of the first energy storage compartment and the second energy storage compartment; the thermal management module is used for managing the temperature of the plurality of energy units of the first energy storage compartment and the second energy storage compartment; the first compartment body, the second compartment body and the third compartment body are arranged in the direction of height of the energy storage device; and the heights of the first compartment body, the second compartment body and the third compartment body are all less than the height of a standard container, and the sum of the heights of the first compartment body, the second compartment body and the third compartment body is greater than or equal to 0.8 times the height of the standard container and is less than or equal to 1.5 times the height of the standard container.

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

[0006] The energy storage device provided by the embodiments of the present disclosure comprises:

[0007] The first energy storage bin comprises a first bin body and a plurality of energy units;

[0008] The second energy storage bin comprises a second bin body and a plurality of energy units;

[0009] The accommodating bin comprises a third bin body, and at least part of a control module and / or at least part of a thermal management module arranged in the third bin body, the control module is used for electrically controlling the plurality of energy units of the first energy storage bin and the plurality of energy units of the second energy storage bin, and the thermal management module is used for managing the temperature of the plurality of energy units of the first energy storage bin and the plurality of energy units of the second energy storage bin, the first bin body, the second bin body and the third bin body are arranged along the height direction of the energy storage device;

[0010] The height of the first bin body, the second bin body and the third bin body is less than the height of a standard container, the sum of the heights of the first bin body, the second bin body and the third bin body is greater than or equal to 0.8 times the height of a standard container, and less than or equal to 1.5 times the height of a standard container.

[0011] The energy storage device provided by the embodiments of the present disclosure is equivalent to being split into the first energy storage bin, the second energy storage bin and the accommodating bin by arranging the energy storage device to comprise the first energy storage bin, the second energy storage bin and the accommodating bin, so that the total weight of the first energy storage bin, the total weight of the second energy storage bin and the total weight of the accommodating bin can be designed according to the transportation limit weight, which means that the problem of transportation overweight can be improved, the transportation cost of the energy storage device can be reduced, the electric quantity of the energy storage device can be improved as much as possible, and the use cost of the energy storage device is reduced. Moreover, the first energy storage bin, the second energy storage bin and the accommodating bin constitute a complete system. In addition, by arranging the sum of the heights of the first bin body, the second bin body and the third bin body to be greater than or equal to 0.8 times the height of a standard container and less than or equal to 1.5 times the height of a standard container, the space occupied by the energy storage device in the transportation process can be as low as possible while the electric quantity of the energy storage device is as high as possible. In addition, by arranging the first energy storage bin and the second energy storage bin to accommodate energy units, and arranging the accommodating bin to accommodate the control module, the layout of the energy storage device is facilitated.

[0012] In some embodiments, the number of control modules is one.

[0013] That is, by setting a control module, the control module can simultaneously control the electrical control of the plurality of energy units of the first energy storage warehouse and the plurality of energy units of the second energy storage warehouse, so as to save space and reduce cost.

[0014] In some embodiments, the weight of the first energy storage warehouse, the second energy storage warehouse and the containing warehouse is less than or equal to 45 tons.

[0015] In order to make the first energy storage warehouse, the second energy storage warehouse and the containing warehouse meet the requirements of some countries for transportation limits, the overall weight of the first energy storage warehouse, the second energy storage warehouse and the containing warehouse is less than or equal to 45 tons, and the integration of the first energy storage warehouse, the second energy storage warehouse and the containing warehouse 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.

[0016] In some embodiments, the third warehouse body is arranged above the first warehouse body and the second warehouse body.

[0017] In this embodiment, by arranging the heat management module on the top of the third warehouse body, the heat management module is not blocked by any obstruction above it, which is conducive to heat dissipation of the heat management module, thereby improving the service life of the energy storage device. At the same time, it is conducive to reducing the overall height of the center of gravity of the energy storage device, which is beneficial to transportation safety. In addition, it is conducive to improving the heat preservation and insulation effect of the energy unit, and at the same time, the heat management module blocks the heat radiation at the top, reducing the influence of heat radiation on the energy unit.

[0018] In some embodiments, the heat management module includes a fan and a condenser, the fan and the condenser are located on the top of the third warehouse body, and the top wall and / or the side wall of the third warehouse body is provided with a ventilation opening, the ventilation opening is used for ventilation of the heat management module.

[0019] In this embodiment, the ventilation opening is located on the top wall and / or the side wall of the third warehouse body, which is conducive to heat dissipation of the heat management module, so that the heat management module can have more heat dissipation channels, thereby improving the temperature control effect of the heat management module.

[0020] In some embodiments, the energy storage device includes a plurality of battery devices, each of the battery devices includes a heat management component and a plurality of energy units, the heat management component is used to adjust the temperature of the energy units, part of the battery devices in all the battery devices are contained in the second warehouse, and the remaining part of the battery devices are contained in the third warehouse.

[0021] The accommodating bin comprises a first connector, the first energy storage bin and the second energy storage bin comprise a second connector, the first connector is in communication with the thermal management module, the second connector is in communication with the thermal management component, and the first connector is used for cooperating with the second connector of the first energy storage bin and the second energy storage bin.

[0022] In this embodiment, the cooperation of the first connector and the second connector can realize the rapid communication of the thermal management component and the thermal management module, and facilitate the installation of the thermal management module.

[0023] In some embodiments, the thermal management module is in communication with a plurality of thermal management components through a liquid cooling pipeline, the liquid cooling pipeline comprises a main pipeline and a plurality of branch pipelines, the plurality of branch pipelines are connected in parallel to the main pipeline, the main pipeline is in communication with the thermal management module, and the plurality of branch pipelines are respectively in communication with the plurality of thermal management components; the main pipeline is located above the plurality of battery devices, or the main pipeline is located below the plurality of battery devices.

[0024] Here, by arranging the main pipeline above the plurality of battery devices or below the plurality of battery devices, the liquid cooling pipeline can be shortened, thereby reducing the cost and improving the cooling efficiency.

[0025] In some embodiments, the height of the third bin body is less than the height of the first bin body and the second bin body.

[0026] By arranging the height of the third bin body to be less than the height of the first bin body and the second bin body, the third bin body can be used to accommodate the thermal management module and the control module, and under the premise of assembling the thermal management module and the control module, the size of the first bin body and the second bin body can be increased as much as possible, thereby accommodating more energy units, and further facilitating the improvement of the power of the energy storage device.

[0027] In some embodiments, the height of the first bin body is the same as the height of the second bin body.

[0028] Exemplarily, the thermal management module is arranged in the third bin body, and the first bin body and the second bin body accommodate energy units, by arranging the height of the first bin body and the second bin body to be the same, i.e., the first bin body and the second bin body can be universal, the universalization, modularization and standardization of the first bin body and the second bin body are improved, thereby facilitating the reduction of cost, and the third bin body can be designed according to the thermal management requirement.

[0029] In some embodiments, the height of the first bin body, the second bin body and the third bin body is the same.

[0030] In the embodiment, the heights of the first, second and third bin bodies are set to be the same, which is beneficial to improve the generalization, modularization and standardization of the first, second and third bin bodies, thereby reducing the cost.

[0031] In some embodiments, the sum of the heights of the first, second and third bin bodies is equal to the height dimension of the standard container.

[0032] By setting the sum of the heights of the first, second and third bin bodies to be equal to the height dimension of the standard container, the power of the energy storage device can be improved as much as possible, thereby improving the problem of overweight transportation and reducing the transportation cost of the energy storage device. In addition, during transportation, the first, second and third bin bodies can occupy a space equal to that of a standard container, thereby further reducing the transportation cost of the energy storage device.

[0033] In some embodiments, the length dimension of the energy storage device is consistent with the length dimension of the standard container, and the width dimension of the energy storage device is consistent with the width dimension of the standard container.

[0034] By setting the length dimension of the energy storage device to be consistent with the length dimension of the standard container and the width dimension of the energy storage device to be consistent with the width dimension of the standard container, the existing transportation tools and lifting devices for the standard container can be matched, thereby reducing the transportation cost of the energy storage device and the use cost of the energy storage device.

[0035] In some embodiments, part of the energy units of all the energy units are accommodated in the first bin body, and the remaining energy units are accommodated in the second bin body.

[0036] In some embodiments, the control module includes a general control module, the general control module is accommodated in the third bin body, and the general control module is electrically connected with the energy units in the first bin body and the second bin body.

[0037] Here, the general control module is accommodated in the third bin body, and the general control module is electrically connected with the energy units in the first bin body and the second bin body. One general control module can provide monitoring and management functions for the energy units in the first bin body and the second bin body.

[0038] In some embodiments, the control module includes two master control modules, the two master control modules are respectively located in the first bin body and the second bin body, and the two master control modules are respectively used for controlling the input or output of the electric energy of the energy units in the first bin body and the second bin body. The two master control modules are electrically connected with the general control module.

[0039] Here, the master control module in the second bin body is configured to control input or output of electric energy of the energy units in the second bin body, and the master control module in the first bin body is configured to control input or output of electric energy of the energy units in the first bin body, so as to facilitate connection between different master control modules and the energy units in different bin bodies.

[0040] In some embodiments, the control module comprises two fire control modules, the two fire control modules are respectively located in the first bin body and the second bin body, and the two fire control modules are respectively configured to perform fire control on the energy units in the first bin body and the second bin body.

[0041] Here, the fire control module in the second bin body is configured to perform fire control on the energy units in the second bin body, and the fire control module in the first bin body is configured to perform fire control on the energy units in the first bin body, so as to improve reliability.

[0042] In some embodiments, the third bin body, the first bin body and the second bin body are arranged in sequence from top to bottom of the energy storage device.

[0043] The control module comprises a branch circuit breaker, and the branch circuit breaker is arranged in the second bin body.

[0044] The branch circuit breaker is arranged on the connection branch line of the master control module, and is configured to control on-off of the connection branch line.

[0045] In some embodiments, the control module comprises a main circuit breaker, and the main circuit breaker is arranged in the second bin body.

[0046] The main circuit breaker is arranged on the connection main line of the master control module, and is configured to control on-off of the connection main line.

[0047] In some embodiments, the control module is accommodated in the third bin body, and the control module is configured to perform electrical control on the energy units in the first bin body and the second bin body.

[0048] That is, all the control modules are arranged in the third bin body, and no control module is arranged in the first bin body and the second bin body.

[0049] In some embodiments, the energy units are battery monomers, and the weight of a single energy unit is 5kg to 60kg.

[0050] The weight of the energy unit is appropriate, so that an appropriate amount of energy units can be placed in the bin body, and the energy density is moderate under the condition of meeting the transportation demand.

[0051] In some embodiments, the first energy storage bin has a weight M, the total weight of the energy units in the first energy storage bin is M1, (M1 / M) x 100% is greater than or equal to 60%; and / or,

[0052] The second energy storage bin has a weight M2, the total weight of the energy units in the second energy storage bin is M3, (M3 / M2) x 100% is greater than or equal to 60%.

[0053] In this way, on the one hand, the weight ratio of the energy units in a unit volume of the bin body can be increased, and the electric quantity of a unit volume of the energy storage device can be increased; on the other hand, during transportation of the energy storage device, more energy units that contribute to energy storage and have high 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 bin body is assembled into the energy storage device, the transportation cost of the assembled energy storage device can be reduced.

[0054] In some embodiments, (M1 / M) x 100% is greater than or equal to 80%; and / or,

[0055] (M3 / M2) x 100% is greater than or equal to 80%.

[0056] In this way, the transportation cost of the assembled energy storage device can be further reduced.

[0057] In some embodiments, the first energy storage bin has a weight M, the first bin body is provided with a plurality of battery devices, the battery device includes a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the total weight of the battery devices in the first bin body is M4, 70% ≤ (M4 / M) x 100% ≤ 90%; and / or,

[0058] The second energy storage bin has a weight M2, the second bin body is provided with a plurality of battery devices, the battery device includes a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the total weight of the battery devices in the second bin body is M5, 70% ≤ (M5 / M) x 100% ≤ 90%.

[0059] The energy density of the first energy storage bin and the structural strength of the first bin body can be considered, and the first bin body has stronger practicability.

[0060] The energy density of the second energy storage bin and the structural strength of the second bin body can be considered, and the second bin body has stronger practicability.

[0061] In some embodiments, the first bin body has a volume V, the total volume of the energy units in the first bin body is V1, (V1 / V) x 100% is greater than or equal to 30%; and / or,

[0062] The volume of the second container body is V2, the total volume of the energy units in the second container body is V3, and (V3 / V2) x 100% is greater than or equal to 30%.

[0063] On the one hand, the volume ratio of the energy units in the first energy storage container per unit volume can be increased, and the electric quantity of the energy storage device per unit volume can be increased. On the other hand, during transportation of the energy storage device, more energy units that contribute to energy storage and have a high production difficulty and cannot be produced at the destination are transported, while 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 beneficial to reduce the transportation cost of the assembled energy storage device.

[0064] On the one hand, the volume ratio of the energy units in the second energy storage container per unit volume can be increased, and the electric quantity of the energy storage device per unit volume can be increased. On the other hand, during transportation of the energy storage device, more energy units that contribute to energy storage and have a high production difficulty and cannot be produced at the destination are transported, while 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 beneficial to reduce the transportation cost of the assembled energy storage device.

[0065] In some embodiments, (V1 / V) x 100% is greater than or equal to 50%; and / or,

[0066] (V3 / V2) x 100% is greater than or equal to 50%.

[0067] Further, the transportation cost of the assembled energy storage device can be reduced.

[0068] In some embodiments, the volume of the first container body is V, a plurality of battery devices are arranged in the first container body, the battery device includes a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the total volume of the battery device in the first container body is V4, and 50% ≤ (V4 / V) x 100% ≤ 80%; and / or,

[0069] The volume of the second container body is V2, a plurality of battery devices are arranged in the second container body, the battery device includes a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the total volume of the battery device in the second container body is V5, and 50% ≤ (V5 / V2) x 100% ≤ 80%.

[0070] The energy density of the first energy storage container and the structural strength of the first container body can be considered, and the practicability of the first container body is stronger.

[0071] The energy density of the second energy storage bin and the structural strength of the second bin body can be considered, and the second bin body has higher practicability.

[0072] In some embodiments, the energy of the first energy storage bin or the second energy storage bin is E, the size of the first bin body or the second bin body along the length direction of the energy storage device is a, the size of the first bin body or the second bin body along the width direction of the energy storage device is b, 250KW / m 2 ≤E / (a×b)≤700KW / m 2 .

[0073] The energy density of the energy storage device and the mass of the first bin body or the second bin body are considered, the practicability of the energy storage device is improved, and the transportation of the energy storage device is facilitated.

[0074] In some embodiments, 450KW / m 2 ≤E / (a×b)≤600KW / m 2 .

[0075] The energy density of the energy storage device and the mass of the first bin body or the second bin body are further improved, and the transportation of the energy storage device is facilitated.

[0076] In some embodiments, the standard container is a 20-foot standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0077] In some embodiments, the energy storage device further comprises a connecting mechanism configured to connect the first bin body and the second bin body, and / or the connecting mechanism is configured to connect the second bin body and the third bin body.

[0078] The connecting mechanism comprises a support arranged between the first bin body and the second bin body along the height direction of the energy storage device, and / or the support is arranged between the second bin body and the third bin body along the height direction of the energy storage device; the sum of the heights of the first bin body, the second bin body and the third bin body and the sum of the heights of the support is greater than or equal to 0.8 times the height of the standard container, and less than or equal to 1.5 times the height of the standard container.

[0079] The first bin body, the second bin body and the third bin body are connected by the connecting mechanism, so that the stacking of the first bin body, the second bin body and the third bin body is more stable.

[0080] In some embodiments, at least one of the first, second and third housings has an energy compartment for accommodating at least one of the energy units and a control compartment for accommodating at least part of the control module; the energy compartment is provided with a first door on at least one side in the width direction, and the control compartment is provided with a second door on at least one side in the width direction.

[0081] Here, the first door and the second door can be maintenance doors, which facilitate maintenance of the energy storage device through the maintenance doors.

[0082] The embodiments of the present disclosure further provide an energy storage system, comprising a power conversion device and the energy storage device described above, wherein the power conversion device is electrically connected to the power generation device and the energy storage device.

[0083] The embodiments of the present disclosure further provide a charging network, comprising a charging pile and the energy storage device or the energy storage system described above, wherein the energy storage device is used to provide electric energy for the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0084] FIG. 1 is a structural schematic diagram of a charging network according to some embodiments of the present disclosure;

[0085] FIG. 2 is a structural schematic diagram of an energy storage system according to some embodiments of the present disclosure;

[0086] FIG. 3 is a structural schematic diagram of an energy storage device according to some embodiments of the present disclosure;

[0087] FIG. 4 is a partial structural schematic diagram of the energy storage device in FIG. 3;

[0088] FIG. 5 is a partial structural schematic diagram of the energy storage device in FIG. 3;

[0089] FIG. 6 is a structural schematic diagram of an energy storage device according to some embodiments of the present disclosure;

[0090] FIG. 7 is a structural schematic diagram of an energy storage device according to some embodiments of the present disclosure;

[0091] FIG. 8 is a structural schematic diagram of an energy storage device according to some embodiments of the present disclosure;

[0092] FIG. 9 is a control schematic diagram of an energy storage system according to some embodiments of the present disclosure;

[0093] FIG. 10 is a control schematic diagram of a master control module according to some embodiments of the present disclosure;

[0094] FIG. 11 is a structural schematic diagram of a control module according to some embodiments of the present disclosure;

[0095] FIG. 12 is a structural schematic diagram of the cooperation between two adjacent housings of an energy storage device according to some embodiments of the present disclosure;

[0096] FIG. 13 is a structural schematic diagram of a battery device according to some embodiments of the present disclosure.

[0097] Legend 1000, charging network; 2000, energy storage system; 100, energy storage device; 10, first energy storage bin; 11, first bin body; 111, first limiting piece; 1111, limiting groove; 12, energy bin; 121, first bin door; 13, control bin; 131, second bin door; 15, ventilation opening; 20, second energy storage bin; 21, second bin body; 211, second limiting piece; 2111, limiting hole; 222, limiting pin; 30, containing bin; 31, third bin body; 40, energy unit; 50, thermal management module; 60, control module; 61, master control module; 611, fuse; 612, relay; 613, isolating switch; 614, emergency stop switch; 615, Hall sensor; 62, power distribution module; 63, master control module; 64, fire control module; 70, connection wire harness; 71, high-voltage wire harness; 72, low-voltage wire harness; 80, battery device; 81, box body; 811, first box body; 812, second box body; 82, thermal management component; 90, liquid cooling pipeline; 91, main pipeline; 92, branch pipeline; 110, slave battery monitoring unit; 120, master battery monitoring unit; 130, intelligent control terminal; 140, energy storage converter; 150, energy management system; 200, charging pile; 300, power conversion device; 3000, power generation device. DETAILED DESCRIPTION

[0098] All embodiments of the present disclosure and optional embodiments can be combined with each other to form new technical solutions if not specifically stated.

[0099] All technical features of the present disclosure and optional technical features can be combined with each other to form new technical solutions if not specifically stated.

[0100] With the development of clean energy, more and more equipment uses electric energy as driving energy, and then as power battery which can store more electric energy and can be charged and discharged repeatedly, such as lithium ion battery. Among them, the power battery is 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.

[0101] 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.

[0102] 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., and the present disclosure is not limited thereto.

[0103] The energy unit generally includes an electrode assembly. By way of 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 charging and discharging of the energy unit, active ions (e.g., lithium ions) are intercalated and deintercalated between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, and can function to prevent short circuiting of the positive and negative electrodes while allowing the active ions to pass through.

[0104] 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.

[0105] By way of example, the positive electrode active material can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as a positive electrode active material for a battery can also be used.

[0106] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0107] By way of example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0108] 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.

[0109] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0110] In some embodiments, the separator is a separator film. The present disclosure does not have a particular limitation on the type of separator film, and any publicly known porous structure separator film having good chemical stability and mechanical stability can be used.

[0111] By way of 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.

[0112] 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 and negative electrodes.

[0113] In some embodiments, the energy unit further comprises an electrolyte, which functions to conduct ions between the positive and negative electrodes. The type of electrolyte is not particularly limited in the present disclosure and can be selected as desired. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0114] The electrode assembly can be in a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0115] In some embodiments, the electrode assembly is in a wound structure. The positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0116] In some embodiments, the electrode assembly is in a stacked structure.

[0117] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape, etc.

[0118] In some embodiments, the electrode assembly is provided with tabs, which can conduct current from the electrode assembly. The tabs include positive tabs and negative tabs.

[0119] In some embodiments, the energy unit can comprise a housing. The housing can be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), 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 functions to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly, which is used to package 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 package the electrode assembly, the electrolyte, etc.

[0120] As an example, the energy unit can be a cylindrical energy unit, a prismatic energy unit, a pouch energy unit, or an energy unit of other shapes, including a square housing energy unit, a blade-shaped energy unit, a polygonal battery (e.g., a hexagonal battery), etc., which are not particularly limited in the present disclosure.

[0121] In some embodiments, the housing comprises an end cap and a shell, the shell is provided with an opening, and the end cap is provided on the opening. The shell can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0122] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to the tabs. The electrode terminal can be directly connected to the tabs or indirectly connected to the tabs through a current collecting member. The electrode terminal can be provided on the end cap or on the shell.

[0123] The power station has higher and higher requirements for the area energy density of the energy storage device, so in order to improve the power, the total weight of the bin body and the components in the bin body is also correspondingly increased. The energy storage device needs to be transported from the production place to the use place by land and / or sea, and there is a weight limit for transportation by land and sea, so there is a contradiction between the improvement of the energy density and the weight of the energy storage device.

[0124] 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.

[0125] The energy storage device can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the off-peak period of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak period of electricity consumption. 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.

[0126] Please refer to FIG. 1, which is a structural schematic diagram of a charging network provided by an embodiment of the present disclosure. The embodiment of the present disclosure provides a charging network, which includes a charging pile for charging an electrical equipment. The charging network can also include an energy storage device or an energy storage system, the energy storage device is electrically connected with the charging pile, and the energy storage device is used to provide electrical energy for the charging pile.

[0127] It should be noted that the charging pile and the energy unit in the energy storage device are electrically connected through a cable, and the energy unit can provide the electrical energy stored by itself to the charging pile. The charging pile has one or more connectors for connecting with the electrical equipment (such as a vehicle), so as to charge the electrical equipment. The charging network applies the energy storage device, which can effectively improve the reliability of the charging network, and also helps to improve the flexibility of the charging network when deployed.

[0128] The energy storage device can be located inside the charging pile (for example, a charging and storage integrated machine), or located outside the charging pile.

[0129] In one charging network, there can be one charging pile, and one energy storage device provides electrical energy for the charging pile; there can also be multiple charging piles, and one energy storage device provides electrical energy for the multiple charging piles.

[0130] The energy storage device can include multiple energy units, and the energy units are electrically connected with the charging pile, so as to provide electrical energy for the charging pile.

[0131] As an example, as shown in FIG. 1, the charging network 1000 includes one energy storage device 100 and two charging piles 200, and the one energy storage device 100 provides electrical energy for the two charging piles 200.

[0132] Please refer to FIG. 2, which is a structural schematic diagram of an energy storage system 2000 according to an embodiment of the present disclosure. The embodiment of the present disclosure provides an energy storage system 2000. The energy storage system 2000 comprises a power conversion device, which can be electrically connected to a power generation device 3000 and an energy storage device 100 to convert the power provided by the power generation device 3000. The power conversion device guides the power provided by the power generation device 3000 into the energy storage device 100 after power conversion.

[0133] The power conversion device is used to connect between the power generation device 3000 and the energy storage device 100. The power generation device 3000 is used to generate power, and the power generation device 3000 is used to store the power generated by the power generation device 3000 into the energy storage device 100 through the power conversion device. The energy storage system 2000 applies the energy storage device 100, which can effectively improve the operation reliability of the energy storage system 2000. In specific implementation, the power generation 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.

[0134] As an example, as shown in FIG. 2, the energy storage system 2000 comprises the energy storage device 100 and the power conversion device, and two power generation devices 3000 respectively transmit the generated power to the power conversion device, and the power conversion device guides the power into the energy storage device 100 for storage.

[0135] Please refer to FIG. 3 to FIG. 8, some embodiments of the present disclosure provide an energy storage device 100, which comprises a first energy storage bin 10, a second energy storage bin 20, and a containing bin 30. The first energy storage bin 10 comprises a first bin body 11 and a plurality of energy units 40, the second energy storage bin 20 comprises a second bin body 21 and a plurality of energy units 40, and the containing bin 30 comprises a third bin body 31 and at least part of a control module 60 and / or at least part of a thermal management module 50 arranged in the third bin body 31. The control module 60 is used to electrically control the plurality of energy units 40 of the first energy storage bin 10 and the plurality of energy units 40 of the second energy storage bin 20. The thermal management module 50 is used to manage the temperature of the plurality of energy units 40 of the first energy storage bin 10 and the plurality of energy units 40 of the second energy storage bin 20. The first bin body 11, the second bin body 21, and the third bin body 31 are arranged along the height direction of the energy storage device 100. The height of the first bin body 11, the second bin body 21, and the third bin body 31 is less than the height of a standard container, and the sum of the heights of the first bin body 11, the second bin body 21, and the third bin body 31 is greater than or equal to 0.8 times the height of a standard container and less than or equal to 1.5 times the height of a standard container.

[0136] For the convenience of description, the first energy storage bin 10 and the second energy storage bin 20 are collectively referred to as an energy storage bin, and the first bin body 11, the second bin body 21, and the third bin body 31 are collectively referred to as a bin body.

[0137] The bin body can be a cabinet or a container, and the bin body has a cavity inside, which can accommodate the energy storage bin or other components of the accommodation bin. The bin body can have a hexahedral structure.

[0138] The bin body usually has a cuboid structure, and the length direction and the width direction of the bin body are parallel to the horizontal plane. The length direction of the bin body is parallel to the longest side of the cuboid structure of the bin body. The height direction of the bin body is perpendicular to the ground. For example, as shown in FIG. 3, the length direction of the bin body is represented by X, the width direction of the bin body is represented by Y, and the height direction of the bin body is represented by Z.

[0139] The first bin body 11, the second bin body 21, and the third bin body 31 are arranged along the height direction of the energy storage device 100, which can be understood as that the first bin body 11, the second bin body 21, and the third bin body 31 are stacked or connected along the height direction of the energy storage device 100.

[0140] The energy storage device 100 further includes a plurality of energy units 40, which are used to provide or store electric energy.

[0141] Here, the energy units 40 of the first energy storage bin 10 and the energy units 40 of the second energy storage bin 20 can be the same or different.

[0142] Here, the energy unit 40 can be a battery monomer or a battery device 80 formed by electrically connecting a plurality of battery monomers.

[0143] Referring to FIGS. 7 and 13, the plurality of energy units 40 can form a plurality of layers and / or a plurality of columns of battery devices 80, and each row or column of battery devices 80 includes a plurality of battery devices 80.

[0144] The battery device 80 mentioned in the embodiments of the present disclosure can include one or more battery monomer assemblies for providing voltage and capacity. The battery monomer assembly can include a plurality of battery monomers connected in series, in parallel, or in a mixed manner through a busbar component.

[0145] In some embodiments, the battery monomer assembly is usually formed by arranging a plurality of battery monomers.

[0146] For example, the battery monomer assembly can be a battery module formed by arranging and fixing a plurality of battery monomers into an independent module. For example, the battery module can be formed by bundling a plurality of battery monomers with a cable tie.

[0147] In some embodiments, the battery device 80 can be a battery pack, which includes a box 81 and one or more battery cell assemblies housed in the box 81.

[0148] As an example, the battery cell assembly can be a battery module, which can be housed in the box 81 by fixing the battery module in the box 81.

[0149] As an example, the battery cell assembly can also be housed in the box 81 by fixing a plurality of battery cells directly in the box 81.

[0150] As an example, referring to FIG. 13, the box 81 can include a first box 811 and a second box 812. The first box 811 and the second box 812 are fastened so that an enclosed space is formed inside the box 81 to accommodate the battery cell assembly. Here, enclosed means covered or closed, which can be sealed or unsealed. The first box 811 can be a top cover or a bottom plate.

[0151] As an example, the box 81 can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame so that an enclosed space is formed inside the box 81 to accommodate the battery cell assembly.

[0152] The first box 11 houses a plurality of energy units 40, which can be battery modules or battery packs.

[0153] The second box 21 houses a plurality of energy units 40, which can be battery modules or battery packs.

[0154] Here, the accommodation box 30 includes a third box 31 and at least part of the control module 60 and / or at least part of the thermal management module 50 arranged in the third box 31, and the control module 60 is used to electrically control the plurality of energy units 40 of the first energy storage box 10 and the plurality of energy units 40 of the second energy storage box 20, and the thermal management module 50 is used to manage the temperature of the plurality of energy units 40 of the first energy storage box 10 and the plurality of energy units 40 of the second energy storage box 20. That is, the first energy storage box 10, the second energy storage box 20, and the accommodation box 30 can constitute a complete system to provide or store electrical energy.

[0155] Here, the third box 31 can house the control module 60, or can house the thermal management module 50, or can simultaneously house the control module 60 and the thermal management module 50.

[0156] In some embodiments, referring to FIG. 6, the accommodation bin 30 comprises at least part of a control module 60, which is configured to electrically control the plurality of energy units 40 of the first energy storage bin 10 and the plurality of energy units 40 of the second energy storage bin 20.

[0157] In this embodiment, by providing the control module 60, the control module 60 can control the input or output of the electrical energy of the energy unit 40, thereby achieving electrical control of the energy unit 40. In addition, by additionally providing the accommodation bin 30 for accommodating at least part of the control module 60, the layout of the energy storage device is facilitated.

[0158] Here, by providing the thermal management module 50, the thermal management module 50 can manage the temperature of the energy unit 40, thereby reducing the risk of temperature runaway of the energy unit 40.

[0159] The height of a standard container is h, and the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 is 0.8h-1.5h.

[0160] The sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 can be a point value of any one of 0.8h, 0.9h, 1.0h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h or a point value between any two of them.

[0161] Here, the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 is the sum of the heights of the first energy storage bin 10, the second energy storage bin 20 and the accommodation bin 30.

[0162] Exemplarily, the heights of the first bin body 11, the second bin body 21 and the third bin body 31 are all less than the height of a standard container.

[0163] By setting the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 to be 0.8h-1.5h, it is beneficial to achieve as much as possible to increase the power of the energy storage device 100, while also as much as possible to reduce the space occupied by the energy storage device 100 during transportation.

[0164] Please refer to FIG. 3 and FIG. 5, the size a of the bin body in the length direction is the distance between the two ends of the bin body in the length direction; the size b of the bin body in the width direction is the distance between the two ends of the bin body in the width direction; and the size h of the bin body in the height direction is the distance between the two ends of the bin body in the height direction. The above-mentioned size a, size b and size h are the maximum sizes of the outer contour of the bin body in the corresponding direction. The bin body 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, the eight corner pieces respectively protrude from the box walls of the bin body, the total span of the two corner pieces arranged in the height direction is the height of the bin body, the total span of the two corner pieces arranged in the length direction is the length of the bin body, and the total span of the two corner pieces arranged in the width direction is the width of the bin body. When calculating the size of the bin body, the pipelines and cables connected to the bin body and located outside the bin body can not be included in the size of the bin body.

[0165] The standard container can be the size of the standard container 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 respectively have the corresponding size. The standard container can refer to GB / T1413-2023 series 1 container classification, size and rated mass.

[0166] The 10 feet can include: the size in the length direction is 2991mm, the tolerance is 0mm-5mm; the size in the width direction is 2438mm, the tolerance is 0mm-5mm; and the size in the height direction is 2438mm or less than 2438mm; the tolerance is 0mm-5mm.

[0167] The 20 feet can include: the size in the length direction is 6058mm, the tolerance is 0mm-6mm; the size in the width direction is 2438mm, the tolerance is 0mm-5mm; and the size in the height direction is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0168] The 30 feet can include: the size in the length direction is 9125mm, the tolerance is 0mm-10mm; the size in the width direction is 2438mm, the tolerance is 0mm-5mm; and the size in the height direction is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0169] The 40 feet can include: the size in the length direction is 12192mm, the tolerance is 0mm-10mm; the size in the width direction is 2438mm, the tolerance is 0mm-5mm; and the size in the height direction is 2896mm, 2591mm or not more than 2438mm; the tolerance is 0mm-5mm.

[0170] 45 feet can include: the length direction size is 13716mm, the tolerance is 0mm-10mm; the width direction size is 2438mm, the tolerance is 350mm-5mm; and the height direction size is 2591mm or 2896mm; the tolerance is 0mm-5mm.

[0171] In the embodiments of the present disclosure, for the cartridge body of various sizes, the size within the range of ±1%, ±2%, ±3%, ±4%, ±5% of the size can be considered as the size within the tolerance range.

[0172] The energy storage device 100 provided by the embodiments of the present disclosure is equivalent to being split into the first energy storage cartridge 10, the second energy storage cartridge 20 and the containing cartridge 30 by being configured to include the first energy storage cartridge 10, the second energy storage cartridge 20 and the containing cartridge 30, so that the total weight of the first energy storage cartridge 10, the total weight of the second energy storage cartridge 20 and the total weight of the containing cartridge 30 are all designed according to the transportation limit weight, which means that the problem of transportation overweight can be improved, the transportation cost of the energy storage device 100 can be reduced, and at the same time, the power of the energy storage device 100 can be improved as much as possible, thereby reducing the use cost of the energy storage device 100. Moreover, the first energy storage cartridge 10, the second energy storage cartridge 20 and the containing cartridge 30 can constitute a complete system. In addition, by configuring the sum of the heights of the first cartridge body 11, the second cartridge body 21 and the third cartridge body 31 as 0.8h-1.5h, it is beneficial to improve the power of the energy storage device 100 as much as possible while reducing the space occupied by the energy storage device 100 in the transportation process as much as possible. In addition, by configuring the first energy storage cartridge 10 and the second energy storage cartridge 20 to accommodate the energy unit 40, and configuring the containing cartridge 30 to accommodate the control module 60, it is beneficial to the layout of the energy storage device 100.

[0173] In some embodiments, the standard container is a 20 feet standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0174] In some embodiments, referring to FIGS. 6-8 and 12, the energy storage device 100 further includes a connecting mechanism (not shown in the figure) configured to connect the first cartridge body 11 and the second cartridge body 21, and / or configured to connect the second cartridge body 21 and the third cartridge body 31. The connecting mechanism includes a support arranged between the first cartridge body 11 and the second cartridge body 21 along the height direction of the energy storage device 100, and / or arranged between the second cartridge body 21 and the third cartridge body 31 along the height direction of the energy storage device 100; the sum of the heights of the first cartridge body 11, the second cartridge body 21 and the third cartridge body 31 and the sum of the heights of the support is greater than or equal to 0.8 times the height of the standard container, and less than or equal to 1.5 times the height of the standard container.

[0175] Optionally, the support is used to connect and fix the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 in the height direction. That is, when the support is used, the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 in the height direction is the sum of the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 and the height of the support. Because the support used to connect the energy storage bins in the height direction also occupies the height of the energy storage bins to some extent.

[0176] Optionally, the support is used to connect and fix the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 in the height direction. That is, when the support is used, the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 in the height direction is the sum of the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 and the height of the support. Because the support used to connect the energy storage bins in the height direction also occupies the height of the energy storage bins to some extent.

[0177] The support is used to connect the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30, so that the stacking of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 is more stable.

[0178] The height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 is 0.8h-1.5h. When the support is used, the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 is the sum of the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 and the height of the support. That is, the height of the first energy storage bin 11, the second energy storage bin 20 and the third energy storage bin 30 is 0.8h-1.5h minus the height of the support. Such a case also belongs to the case of the present disclosure.

[0179] Here, the number of control modules 60 is not limited.

[0180] In some embodiments, the number of control modules 60 is one.

[0181] That is, by arranging one control module 60, the control module 60 can simultaneously control the plurality of energy units 40 of the first energy storage bin 10 and the plurality of energy units 40 of the second energy storage bin 20, so as to save space and reduce cost.

[0182] In some embodiments, the number of control modules 60 is two, one of which is used to electrically control the plurality of energy units 40 of the first energy storage bin 10, and the other of which is used to electrically control the plurality of energy units 40 of the second energy storage bin 20.

[0183] That is, by providing two control modules 60, the two control modules 60 respectively electrically control the plurality of energy units 40 of the first energy storage bin 10 and the plurality of energy units 40 of the second energy storage bin 20, so as to facilitate the convenience of electrical control.

[0184] In some embodiments, the weight of the first energy storage bin 10, the second energy storage bin 20, and the containing bin 30 is less than or equal to 45 tons.

[0185] The weight of the first energy storage bin 10 refers to the total weight of the first bin body 11 and the components provided in the first bin body 11.

[0186] The components provided in the first bin body 11 are, for example, the energy units 40, the connecting pipelines, the control modules 60, or the thermal management modules 50.

[0187] The weight of the second energy storage bin 20 refers to the total weight of the second bin body 21 and the components provided in the second bin body 21.

[0188] The components provided in the second bin body 21 are, for example, the energy units 40, the connecting pipelines, the control modules 60, or the thermal management modules 50.

[0189] The weight of the containing bin 30 refers to the total weight of the third bin body 31 and the components provided in the third bin body 31.

[0190] The components provided in the third bin body 31 are, for example, the connecting pipelines, the control modules 60, or the thermal management modules 50.

[0191] Here, the first energy storage bin 10, the second energy storage bin 20, and the containing bin 30 can be transported and hoisted separately.

[0192] For example, the weight of the first energy storage bin 10, the second energy storage bin 20, and the containing bin 30 can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 45 tons, or any point value between any two of them.

[0193] In the process of hoisting the first energy storage bin 10, the second energy storage bin 20, and the containing bin 30, it is convenient for the hoisting of the relevant hoisting device, and convenient for the transfer work of the first energy storage bin 10, the second energy storage bin 20, and the containing bin 30.

[0194] In order to make the first energy storage bin 10, the second energy storage bin 20 and the containing bin 30 meet the transportation limit requirements of some countries, the overall weight of the first energy storage bin 10, the second energy storage bin 20 and the containing bin 30 is less than or equal to 45 tons, and the integration of the first energy storage bin 10, the second energy storage bin 20 and the containing bin 30 is as high as possible, thereby reducing the workload of on-site installation; at the same time, the energy per unit area is improved, and the cost investment of customers is reduced.

[0195] In some embodiments, referring to FIGS. 3-8, the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 is equal to the height dimension of the standard container.

[0196] By setting the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 to be equal to the height dimension of the standard container, the power of the energy storage device 100 can be improved as much as possible, which is conducive to improving the problem of transportation overweight and reducing the transportation cost of the energy storage device 100. In addition, during transportation, the first bin body 11, the second bin body 21 and the third bin body 31 can occupy a space equal to the space occupied by a standard container, further reducing the transportation cost of the energy storage device 100.

[0197] In some embodiments, referring to FIGS. 3-8, the size of the energy storage device 100 along the length direction is consistent with the size of the standard container along the length direction, and the size of the energy storage device 100 along the width direction is consistent with the size of the standard container along the width direction.

[0198] Here, the size of the energy storage device 100 along the length direction is the size of the first bin body 11 along the length direction, the size of the second bin body 21 along the length direction and the size of the third bin body 31 along the length direction.

[0199] The size of the energy storage device 100 along the width direction is the size of the first bin body 11 along the width direction, the size of the second bin body 21 along the width direction and the size of the third bin body 31 along the width direction.

[0200] In this embodiment, by setting the size of the energy storage device 100 along the length direction to be consistent with the size of the standard container along the length direction, and setting the size of the energy storage device 100 along the width direction to be consistent with the size of the standard container along the width direction, it is conducive to matching the existing standard container transportation tools and spreaders, thereby reducing the transportation cost of the energy storage device 100, and thus reducing the use cost of the energy storage device 100.

[0201] By setting the sum of the heights of the first bin body 11, the second bin body 21 and the third bin body 31 equal to the height dimension of the standard container, the energy storage device 100 does not exceed the height of the corresponding standard container along the height direction of the bin body in the process of transportation, which is conducive to improving the convenience of the energy storage device 100 in the process of transportation and reducing the transportation cost. The size of the first bin body 11, the second bin body 21 and the third bin body 31 along the length direction and the size of the first bin body 11, the second bin body 21 and the third bin body 31 along the width direction are consistent with the standard container, so that the first bin body 11, the second bin body 21 and the third bin body 31 occupy the same horizontal area as the standard container during transportation, which is conducive to matching the existing standard container transportation tools and lifting devices, reducing the transportation cost of the first bin body 11, the second bin body 21 and the third bin body 31, and thus reducing the use cost of the energy storage device 100.

[0202] In some embodiments, referring to FIGS. 3-8, the third bin body 31 is arranged above the first bin body 11 and the second bin body 21.

[0203] That is, the containing bin 30 is arranged above the first energy storage bin 10 and the second energy storage bin 20. In this way, the control module 60 and the thermal management module 50 in the third bin body 31 can be connected to the first bin body 11 and the second bin body 21.

[0204] In some embodiments, referring to FIGS. 3-8, the thermal management module 50 is contained in the third bin body 31.

[0205] The thermal management module 50 can be a liquid cooling unit, an air conditioner, a ground source cooling device or a sea liquid cooling device.

[0206] The thermal management module 50 is contained in the third bin body 31, and the thermal management module 50 can manage the temperature of the energy unit 40 in the first bin body 11 and the second bin body 21.

[0207] Exemplarily, the thermal management module 50 is located at the top of the third bin body 31.

[0208] In this embodiment, by arranging the thermal management module 50 at the top of the third bin body 31, the thermal management module 50 is not blocked by any obstruction above, which is conducive to heat dissipation of the thermal management module 50, thereby improving the service life of the energy storage device 100. At the same time, it is conducive to reducing the overall center of gravity height of the energy storage device 100, which is conducive to transportation safety. In addition, it is conducive to improving the heat insulation effect of the energy unit 40, and the thermal management module 50 blocks the heat radiation at the top, reducing the influence of heat radiation on the energy unit 40.

[0209] In some embodiments, the thermal management module 50 comprises a fan and a condenser, the fan and the condenser are located at the top of the third bin body 31, the top wall and / or the side wall of the third bin body 31 is provided with a vent 15 for the thermal management module 50 to ventilate.

[0210] Exemplarily, the thermal management module 50 comprises a cooling circulation loop and a refrigerant circulation loop, the thermal management component 82 constitutes part of the cooling circulation loop, and the condenser constitutes part of the refrigerant circulation loop. The thermal management module 50 is independent of the energy unit 40, thereby reducing the risk of mutual interference between the thermal management module 50 and the energy unit 40.

[0211] The cooling liquid can circulate in the cooling liquid circulation loop, and can circulate through the thermal management component 82 to exchange heat with the energy unit 40 to cool the energy unit 40. The cooling liquid after exchanging heat with the energy unit 40 can also circulate through the evaporator and exchange heat with the evaporator to exchange the heat exchanged from the energy unit 40 to the evaporator, so that the cooling liquid is cooled.

[0212] The condenser is a component for exchanging heat with the refrigerant flowing therethrough.

[0213] The evaporator is provided in both the cooling liquid circulation loop and the refrigerant circulation loop. The evaporator is internally provided with a cooling liquid flow channel and a refrigerant flow channel. The cooling liquid flow channel participates in forming the cooling liquid circulation loop and is used for the cooling liquid to flow therein. The refrigerant flow channel participates in forming the refrigerant circulation loop and is used for the refrigerant to flow therein. The cooling liquid flow channel and the refrigerant flow channel are not communicated with each other to prevent the cooling liquid from mixing with the refrigerant. In the evaporator, the cooling liquid and the refrigerant can exchange heat, and in particular, the heat of the cooling liquid can be exchanged to the refrigerant, so that the evaporator can cool the cooling liquid flowing therethrough.

[0214] Exemplarily, the fan is used to dissipate heat from the condenser.

[0215] Here, the top wall of the third bin body 31 is provided with the vent 15, which can be an entire opening of the top wall of the third bin body 31 to form a vent 15. Alternatively, the top wall of the third bin body 31 can be partially opened to form a vent 15; for example, the top wall of the third bin body 31 is provided with an opening along one side in the length direction, so that part of the top wall of the third bin body 31 forms the vent 15.

[0216] As an example, the vent 15 of the top wall of the third bin body 31 can be used for exhaust air, and the vent 15 of the side wall of the third bin body 31 can be used for intake air.

[0217] In this embodiment, the ventilation openings 15 are located on the top wall and / or the side wall of the third storage body 31, which is conducive to heat dissipation of the thermal management module 50, so that the thermal management module 50 can have more heat dissipation channels, and the temperature control effect of the thermal management module 50 is improved.

[0218] In some embodiments, referring to FIGS. 6 and 13, the energy storage device 100 includes a plurality of battery devices 80, each of which includes a thermal management component 82 for regulating the temperature of the energy units 40 and a plurality of energy units 40, part of the battery devices 80 in all the battery devices 80 are accommodated in the first storage body 11, and the rest of the battery devices 80 are accommodated in the second storage body 21. The storage compartment 30 includes a first connector, and the first energy storage compartment 10 and the second energy storage compartment 20 include a second connector, the first connector is in communication with the thermal management module 50, and the second connector is in communication with the thermal management component 82, and the first connector is used to cooperate with the second connector of the first energy storage compartment 10 and the second energy storage compartment 20.

[0219] Part of the battery devices 80 in all the battery devices 80 are accommodated in the first storage body 11, and the rest of the battery devices 80 are accommodated in the second storage body 21, in other words, part of the energy units 40 in all the energy units 40 are accommodated in the first storage body 11, and the rest of the energy units 40 are accommodated in the second storage body 21, that is, the first storage body 11 and the second storage body 21 both accommodate energy units 40, and the third storage body 31 does not accommodate energy units 40.

[0220] Here, by arranging the thermal management module 50 in the third storage body 31, the temperature of the battery devices 80 in the first storage body 11 and the second storage body 21 is managed.

[0221] As an example, the thermal management component 82 can be plate-shaped or tubular, etc., and a flow channel is arranged inside the thermal management component 82, which can be used to pass in a fluid to heat or cool the energy units 40. The fluid can be a refrigerant or a coolant.

[0222] When the battery device 80 is a battery module, the thermal management component 82 can be the bottom plate, top plate or side plate of the battery module, and can also be located between adjacent energy units 40.

[0223] When the battery device 80 is a battery pack, referring to FIG. 13, the thermal management component 82 can be part of the box 81 or located in the accommodation space of the box 81, and the thermal management component 82 can also be located between adjacent energy units 40.

[0224] The first connector can be in direct communication with the second connector to enable the first connector and the second connector to be mated, for example, the first connector and each second connector are plugged together. In this case, the first connector can be fixed to the third bin body 31, and the second connector can be movably arranged on the first bin body 11 and the second bin body 21. Alternatively, the first connector can be movably arranged on the third bin body 31, and the second connector can be fixedly arranged on the first bin body 11 and the second bin body 21. Alternatively, the first connector and the second connector can be movably arranged on the first bin body 11, the second bin body 21 and the third bin body 31 respectively. The first connector can include a plurality of connecting portions, and each connecting portion corresponds to and is connected to a second connector to enable the first connector to be in communication with the plurality of second connectors.

[0225] Alternatively, the first connector and the second connector can be in communication through a connecting member, and the connecting member can be a pipeline. In this case, the first connector and the second connector can be fixedly arranged on the first bin body 11, the second bin body 21 and the third bin body 31 respectively. Alternatively, the first connector can be fixed to the third bin body 31, and the second connector can be movably arranged on the first bin body 11 and the second bin body 21. Alternatively, the first connector can be movably arranged on the third bin body 31, and the second connector can be fixedly arranged on the first bin body 11 and the second bin body 21. Alternatively, the first connector and the second connector can be movably arranged on the first bin body 11, the second bin body 21 and the third bin body 31 respectively.

[0226] As an example, the thermal management module 50 is provided with a first connector, the first bin body 11 and the second bin body 21 are each provided with a second connector, and the first connector and the second connector are in communication through a pipeline. The pipeline can be a quick plug pipeline, both ends of the pipeline are provided with quick connectors, and the first connector and the second connector are also quick connectors, and the two quick connectors at both ends of the pipeline are connected to the first connector and the second connector respectively.

[0227] In this embodiment, the first connector and the second connector can be mated to enable the quick communication of the thermal management component 82 and the thermal management module 50, and facilitate the installation of the thermal management module 50.

[0228] In some embodiments, the thermal management module 50 is in communication with the plurality of thermal management components 82 through a liquid cooling pipeline 90, and the liquid cooling pipeline 90 includes a main pipeline 91 and a plurality of branch pipelines 92. The plurality of branch pipelines 92 are connected in parallel to the main pipeline 91, the main pipeline 91 is in communication with the thermal management module 50, and the plurality of branch pipelines 92 are in communication with the plurality of thermal management components 82 respectively. The main pipeline 91 is located above the plurality of battery devices 80, or the main pipeline 91 is located below the plurality of battery devices 80.

[0229] In the embodiment in which the main pipeline 91 is located above the plurality of battery devices 80, it is beneficial for the liquid cooling medium to flow from top to bottom through the main pipeline 91 to the plurality of branch pipelines 92 to cool the battery devices 80.

[0230] In the embodiment in which the main pipe 91 is located below the plurality of battery devices 80, it is advantageous for the liquid cooling medium to flow from bottom to top through the main pipe 91 to the plurality of branch pipes 92 to cool the battery devices 80.

[0231] Here, by arranging the main pipe 91 above the plurality of battery devices 80, or below the plurality of battery devices 80, it is advantageous to shorten the liquid cooling pipe 90, thereby reducing costs and improving cooling efficiency.

[0232] It should be noted that the height relationship between the first bin body 11, the second bin body 21, and the third bin body 31 is not limited here.

[0233] In some embodiments, referring to FIGS. 7-8, the heights of the first bin body 11, the second bin body 21, and the third bin body 31 are the same.

[0234] In this embodiment, by arranging the heights of the first bin body 11, the second bin body 21, and the third bin body 31 to be the same, it is advantageous to improve the generalization, modularization, and standardization of the first bin body 11, the second bin body 21, and the third bin body 31, thereby reducing costs.

[0235] In other embodiments, referring to FIGS. 3-8, the height of the first bin body 11 is the same as the height of the second bin body 21.

[0236] That is, in this embodiment, the height of the third bin body 31 can be different from the heights of the first bin body 11 and the second bin body 21.

[0237] Exemplarily, the thermal management module 50 is arranged in the third bin body 31, and the energy units 40 are accommodated in the first bin body 11 and the second bin body 21. By arranging the height of the first bin body 11 to be the same as the height of the second bin body 21, i.e., the first bin body 11 and the second bin body 21 can be universal, the generalization, modularization, and standardization of the first bin body 11 and the second bin body 21 are improved, thereby reducing costs, and the third bin body 31 can be designed according to thermal management requirements.

[0238] In some embodiments, referring to FIGS. 3-6, the height of the third bin body 31 is less than the heights of the first bin body 11 and the second bin body 21.

[0239] By arranging the height of the third bin body 31 to be less than the heights of the first bin body 11 and the second bin body 21, the third bin body 31 can be used to accommodate the thermal management module 50 and the control module 60. On the premise of assembling the thermal management module 50 and the control module 60, the sizes of the first bin body 11 and the second bin body 21 can be increased as much as possible, thereby accommodating more energy units 40, and further improving the power of the energy storage device 100.

[0240] In some embodiments, referring to FIGS. 3-6, the control module 60 comprises a master control module 63, which is accommodated in the third housing 31, and is electrically connected with the energy units 40 in the first housing 11 and the second housing 21.

[0241] Here, the master control module 63 can be used to provide monitoring and management functions for the energy units 40.

[0242] Here, the master control module 63 is accommodated in the third housing 31, and is electrically connected with the energy units 40 in the first housing 11 and the second housing 21, and one master control module 63 can provide monitoring and management functions for the energy units 40 in the first housing 11 and the second housing 21.

[0243] The first energy storage house 10, the second energy storage house 20, and the accommodation house 30 constitute a complete system, that is, the first energy storage house 10, the second energy storage house 20, and the accommodation house 30 can provide or store electric energy.

[0244] In some embodiments, referring to FIGS. 3-6, the control module 60 comprises two master control modules 61, which are respectively located in the first housing 11 and the second housing 21, and are respectively used to control the input or output of electric energy of the energy units 40 in the first housing 11 and the second housing 21, and the two master control modules 61 are electrically connected with the master control module 63.

[0245] The master control module 61 is used to control the input and output of high-voltage electric energy of the energy units 40 in the energy house 12.

[0246] The master control module 61 is electrically connected with the master control module 63, and the master control module 63 is used to control the switching action of the master control module 61.

[0247] Here, the master control module 61 in the second housing 21 is used to control the input or output of electric energy of the energy units 40 in the second housing 21, and the master control module 61 in the first housing 11 is used to control the input or output of electric energy of the energy units 40 in the first housing 11, which facilitates the connection between different master control modules 61 and energy units 40 in different housings.

[0248] In some embodiments, referring to FIGS. 3-6, the control module 60 comprises two fire control modules 64, which are respectively located in the first housing 11 and the second housing 21, and are respectively used to control the fire of the energy units 40 in the first housing 11 and the second housing 21.

[0249] The fire control module 64 is used to control the action of the fire control element when the warehouse body temperature imbalance occurs, and the fire control element can be a fire extinguisher. The fire control element can be arranged in the first warehouse body 11 and the second warehouse body 21.

[0250] Here, the fire control module 64 in the second warehouse body 21 is used to control the energy unit 40 in the second warehouse body 21, and the fire control module 64 in the first warehouse body 11 is used to control the energy unit 40 in the first warehouse body 11, which is beneficial to improve the reliability.

[0251] In some embodiments, referring to FIG. 11, the control module 60 further includes a power distribution module 62, and the main control module 61, the master control module 63, and the fire control module 64 are electrically connected to the power distribution module 62.

[0252] The power distribution module 62 is used to electrically connect the main control module 61, the master control module 63, and the fire control module 64, so as to maintain the normal operation of the main control module 61, the master control module 63, and the fire control module 64.

[0253] That is, in the above embodiment, the master control module 63 is arranged in the third warehouse body 31, and the main control module 61 and the fire control module 64 are arranged in the first warehouse body 11 and the second warehouse body 21.

[0254] In other embodiments, the control module 60 can also be accommodated in the third warehouse body 31, and the control module 60 is used to electrically control the energy unit 40 in the first warehouse body 11 and the second warehouse body 21.

[0255] That is, all the control modules 60 are arranged in the third warehouse body 31, and the first warehouse body 11 and the second warehouse body 21 are not arranged with the control module 60.

[0256] In some embodiments, the third warehouse body 31, the first warehouse body 11, and the second warehouse body 21 are arranged in sequence from top to bottom along the energy storage device 100.

[0257] The control module 60 includes a branch circuit breaker, which is arranged in the second warehouse body 21.

[0258] For example, the branch circuit breaker is arranged on the connection branch line of the master control module 63, which is used to control the on-off of the connection branch line.

[0259] For example, the branch circuit breaker is arranged on the front door of the second warehouse body 21, which is convenient to operate, so as to disconnect all circuits before maintenance.

[0260] In some embodiments, the control module 60 includes a main circuit breaker, which is arranged in the second warehouse body 21.

[0261] Exemplarily, a main circuit breaker is arranged on the main connection line of the total control module 63, for controlling the on-off of the main connection line.

[0262] Exemplarily, the total circuit breaker is arranged on the front compartment door of the second compartment body 21, for facilitating operation to disconnect all circuits before maintenance.

[0263] In some embodiments, referring to FIGS. 3-6, the first compartment body 11 and the second compartment body 21 have an energy compartment 12 and a control compartment 13 inside. The energy compartment 12 is used to accommodate at least one energy unit 40, and at least part of the control module 60 and / or at least part of the thermal management module 50 are accommodated in the control compartment 13.

[0264] Here, at least part of the control module 60 and / or at least part of the thermal management module 50 accommodated in the control compartment 13 means that at least part of the control module 60 can be accommodated in the control compartment 13, at least part of the thermal management module 50 can be accommodated in the control compartment 13, or at least part of the control module 60 and at least part of the thermal management module 50 can be accommodated in the control compartment 13.

[0265] In this embodiment, by arranging the energy compartment 12 and the control compartment 13 inside the first compartment body 11 and the second compartment body 21, and arranging at least part of the control module 60 and / or at least part of the thermal management module 50 in the first compartment body 11 and the second compartment body 21, the space inside the first compartment body 11 and the second compartment body 21 can be fully utilized, and the space utilization of the compartment body is further improved.

[0266] In some embodiments, the first compartment body 11 and the second compartment body 21 comprise a first partition, which is arranged between the energy compartment 12 and the control compartment 13, and the energy compartment 12 and the control compartment 13 share the first partition.

[0267] Here, the first partition can include a metal plate.

[0268] Here, the first partition is conducive to improving the structural strength of the compartment body, and is also conducive to improving the sealing performance and thermal insulation performance of the energy compartment 12.

[0269] The first partition is provided with a heat exchange pipeline and a connection wire harness 70, and the connection wire harness 70 includes a high-voltage wire harness 71 and / or a low-voltage wire harness 72. The thermal management module 50 in the control compartment 13 can perform heat exchange on the energy unit 40 in the energy compartment 12 through the heat exchange pipeline (for example, a liquid cooling pipeline 90), and the control module 60 in the control compartment 13 can perform electrical control on the energy unit 40 in the energy compartment 12 through the connection wire harness 70.

[0270] As an example, when the heat exchange pipeline and the connection wire harness 70 pass through the first partition, the passing position can be sealed.

[0271] Exemplarily, the interior of the first partition is filled with a heat insulation medium.

[0272] Here, the heat insulation medium can be some material capable of heat insulation, such as heat insulation cotton, etc.

[0273] The heat insulation medium is beneficial to improve the structural strength of the first partition, and can also play a fire-retardant and heat preservation effect, which is beneficial to reduce the heat loss of the energy bin 12 and the influence of external heat on the energy unit 40 in the energy bin 12.

[0274] The arrangement mode of the energy bin 12 and the control bin 13 can be various.

[0275] In some embodiments, the control bin 13 and the energy bin 12 are arranged along the height direction of the bin body.

[0276] In other embodiments, the control bin 13 and the energy bin 12 are arranged along the length direction of the bin body.

[0277] Here, by arranging the control bin 13 at the end of the energy bin 12, the space utilization inside the bin body is maximized, and in addition, the control bin 13 and the energy bin 12 can be arranged closer, which is beneficial to improve the structural compactness.

[0278] In some embodiments, referring to FIGS. 3-6, the interior of at least one of the first bin body 11 and the second bin body 21 has an energy bin 12 for accommodating at least one energy unit 40 and a control bin 13 in which at least part of the control module 60 is accommodated. The energy bin 12 is provided with a first bin door 121 on at least one side in the width direction, and the control bin 13 is provided with a second bin door 131 on at least one side in the width direction.

[0279] Here, the first bin door 121 and the second bin door 131 can be maintenance doors, and by providing the maintenance doors, the energy storage device 100 can be easily maintained through the maintenance doors.

[0280] Exemplarily, the control bin 13 is provided with a wire passing hole for external wiring at the top and the bottom. The wire harness connected with the PCS and the EMS is led out of the bin body through the wire passing hole at the bottom after being connected with the control bin 13, and the auxiliary source wire connected with the bin body is led into the interior of the bin body through the hole. The upper bin body also needs to pass through the top of the lower bin body and be led out after passing through the bottom of the lower bin body. The top opening of the bin body is provided with a detachable mounting plate, and the mounting plate is sealed with the bin body. When the bin body is placed on the bottom layer, the mounting plate of the upper layer needs to be removed in advance, and when the bin body is placed on the top layer, the mounting plate at the top does not need to be removed.

[0281] In this embodiment, it is helpful to reduce the land waste of traditional warehouses that must reserve maintenance channels of more than 3m between adjacent warehouses. Only normal paint repair channels need to be reserved between the grid warehouses, which increases the user's land investment returns and increases the user's energy benefits per unit area.

[0282] In order to facilitate quick installation at the customer's site, the control module 60 and the thermal management module 50 are integrated inside the warehouse body. After the warehouse body is stacked on site, it can be connected to the PCS and EMS, which helps to reduce the workload of on-site assembly, improve assembly efficiency, and facilitate customer use.

[0283] The PCS (Power Conversion System) 140 controls the battery's charging and discharging process, converting AC to DC, and can directly power AC loads in the absence of a power grid. The PCS consists of a DC / AC bidirectional converter and a control unit. The PCS controller receives backend control commands via communication and controls the converter to charge or discharge the battery based on the sign and magnitude of the power command, regulating the grid's active and reactive power. The PCS controller communicates with the BMS via the CAN interface to obtain battery pack status information, enabling protective charging and discharging of the battery.

[0284] An Energy Management System (EMS) is a collection of software and hardware used to monitor, control, analyze, and optimize energy systems. It enables efficient energy management and optimized allocation through real-time monitoring and intelligent control of all aspects of energy production, distribution, and consumption.

[0285] In some embodiments, the energy unit 40 is a battery cell, and the weight of a single energy unit 40 is 5 kg to 60 kg.

[0286] The weight of a single energy unit 40 can be any one of 5kg, 10kg, 15kg, 20kg, 25kg, 30kg, 35kg, 40kg, 45kg, 50kg, 55kg, 60kg or any value therebetween. As an example, the mass of a single energy unit 40 is 30kg.

[0287] The weight of the energy unit 40 is appropriate so that an appropriate amount of energy units 40 can be placed in the warehouse, and the energy density is moderate while meeting the transportation requirements.

[0288] In some embodiments, the weight of the first energy storage bin 10 is M, the total weight of the energy units 40 in the first energy storage bin 10 is M1, and (M1 / M)×100%≥60%.

[0289] Exemplarily, (M1 / M) x 100% can be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 90%, etc.

[0290] In this way, on the one hand, the weight proportion of the energy units 40 in the first energy storage bin 10 per unit volume can be increased, and the electric quantity of the energy storage device 100 per unit volume can be increased; on the other hand, during transportation of the energy storage device 100, more energy units 40 that contribute to the storage energy and have high 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 being transported or with reduced transportation, which is conducive to reducing the transportation cost of the assembled energy storage device 100.

[0291] Similarly, the weight of the second energy storage bin 20 is M2, the total weight of the energy units 40 in the second energy storage bin 20 is M3, and (M3 / M2) x 100% ≥ 60%.

[0292] In some embodiments, (M1 / M) x 100% ≥ 80%.

[0293] Exemplarily, (M1 / M) x 100% can be 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, or 90%, etc.

[0294] In this way, the transportation cost of the assembled energy storage device 100 can be further reduced.

[0295] Similarly, (M3 / M2) x 100% ≥ 80%.

[0296] In some embodiments, the weight of the first energy storage bin 10 is M, the first bin body 11 is provided with a plurality of battery devices 80, the battery device 80 includes a box body 81 and a plurality of energy units 40, the plurality of energy units 40 are contained in the box body 81, the total weight of the battery device 80 in the first bin body 11 is M4, and 70% ≤ (M4 / M) x 100% ≤ 90%.

[0297] (M4 / M) x 100% can be 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.

[0298] When (M4 / M) x 100% is greater than or equal to 70%, the weight ratio of the energy units 40 in the first energy storage bin 10 per unit volume can be increased, and the energy density of the first energy storage bin 10 can be increased; when (M4 / M) x 100% is less than or equal to 90%, the structural strength of the first bin body 11 can be maintained. Therefore, when 70%≤(M4 / M) x 100%≤90%, the energy density of the first energy storage bin 10 and the structural strength of the first bin body 11 can be considered, and the practicability of the first bin body 11 is stronger.

[0299] Similarly, the weight of the second energy storage bin 20 is M2, a plurality of battery devices 80 are arranged in the second bin body 21, the battery device 80 includes a box body 81 and a plurality of energy units 40, the plurality of energy units 40 are contained in the box body 81, the total weight of the battery device 80 in the second bin body 21 is M5, and 70%≤(M5 / M) x 100%≤90%.

[0300] In some embodiments, the plurality of battery devices 80 can be arranged in rows and columns, the plurality of battery devices 80 in each row is arranged along the length direction, and the plurality of battery devices 80 in each column is arranged along the height direction. Each battery device 80 includes a thermal management component 82 and a plurality of energy units 40.

[0301] For example, the plurality of battery devices 80 is arranged in, for example, 2 layers and 2 columns, 3 layers and 3 columns, 4 layers and 4 columns, 4 layers and 3 columns, etc.

[0302] It should be noted that the plurality of battery devices 80 can also be arranged in multiple rows, such as 2 rows, 3 rows, 4 rows, 5 rows, or 6 rows; or arranged in multiple columns, such as 2 columns, 3 columns, 4 columns, 5 columns, or 6 columns.

[0303] In some embodiments, the volume of the first bin body 11 is V, the total volume of the energy units 40 in the first bin body 11 is V1, and (V1 / V) x 100%≥30%.

[0304] The energy unit 40 includes a shell, and the volume of the energy unit 40 is the volume of the shell. For example, the energy unit 40 is a square shell energy unit 40, and the product of the length, width, and height of the square shell energy unit 40 is the product of the length, width, and height of the shell.

[0305] In embodiments in which the energy unit 40 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 energy unit 40.

[0306] (V1 / V) x 100% can be 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, 60%, 65%, or 70%, etc.

[0307] On the one hand, the volume ratio of the energy units 40 in the first energy storage compartment 10 per unit volume can be increased, and the electric quantity of the energy storage device 100 per unit volume can be increased; on the other hand, during transportation of the energy storage device 100, more energy units 40 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 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 100.

[0308] Similarly, the volume of the second compartment body 21 is V2, the total volume of the energy units 40 in the second compartment body 21 is V3, and (V3 / V2) x 100% ≥ 30%.

[0309] In some embodiments, (V1 / V) x 100% ≥ 50%.

[0310] (V1 / V) x 100% can be 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 75%, 80%, 85%, or 90%, etc.

[0311] Further conducive to reducing the transportation cost of the assembled energy storage device 100.

[0312] Similarly, (V3 / V2) x 100% ≥ 50%.

[0313] In some embodiments, the volume of the first compartment body 11 is V, the first compartment body 11 is provided with a plurality of battery devices 80, the battery device 80 includes a box body 81 and a plurality of energy units 40, the plurality of energy units 40 are contained in the box body 81, the total volume of the battery device 80 in the first compartment body 11 is V4, and 50% ≤ (V4 / V) x 100% ≤ 80%.

[0314] The volume of the energy unit 40 is the volume of the box body 81. For example, the box body 81 is a cuboid structure, and the volume of the energy unit 40 is equal to the product of the length, width, and height of the box body 81.

[0315] (V4 / V) x 100% can be any one of 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 75%, 80% or any point value between any two of them.

[0316] When (V4 / V) x 100% ≥ 50%, the volume ratio of the energy unit 40 in the first energy storage bin 10 per unit volume can be increased, and the energy density of the energy storage device 100 can be increased; when (V4 / V) x 100% ≤ 80%, the first energy storage bin 10 can have sufficient volume of structural members to maintain the structural strength of the first bin body 11. Therefore, when 50% ≤ (V4 / V) x 100% ≤ 80%, the energy density of the first energy storage bin 10 and the structural strength of the first bin body 11 can be considered, and the practicability of the first bin body 11 is stronger.

[0317] Similarly, the volume of the second bin body 21 is V2, and a plurality of battery devices 80 are arranged in the second bin body 21, the battery device 80 includes a box body 81 and a plurality of energy units 40, the plurality of energy units 40 are contained in the box body 81, the total volume of the battery device 80 in the second bin body 21 is V5, and 50% ≤ (V5 / V2) x 100% ≤ 80%.

[0318] In some embodiments, referring to FIG. 6, the energy of the first energy storage bin 10 or the second energy storage bin 20 is E, the size of the first bin body 11 or the second bin body 21 along the length direction of the energy storage device 100 is a, the size of the first bin body 11 or the second bin body 21 along the width direction of the energy storage device 100 is b, 250KW / m 2 ≤ E / (a x b) ≤ 700KW / m 2 .

[0319] E / (a x 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 / m 2650KW / m 2 700KW / m 2 a×b.

[0320] The energy E can be obtained from the nameplate of the energy storage device 100.

[0321] When E / (a×b)≥250KW / m 2 , the energy storage device 100 can have a larger energy density, and the practicality of the energy storage device 100 is improved; when E / (a×b)≤700KW / m 2 , the risk of the first bin body 11 or the second bin body 21 being too heavy to crush other bin bodies can be reduced, and the transportation of the first bin body 11 or the second bin body 21 is facilitated. 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 first bin body 11 or the second bin body 21 are considered, the practicality of the energy storage device 100 is improved, and the transportation of the energy storage device 100 is facilitated.

[0322] In some embodiments, 450KW / m 2 ≤E / (a×b)≤600KW / m 2 .

[0323] 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 them.

[0324] As an example, E / (a×b) = 490KW / m 2 .

[0325] Further, the energy density of the energy storage device 100 and the mass of the first bin body 11 or the second bin body 21 can be set to facilitate transportation of the energy storage device 100.

[0326] In some embodiments, two adjacent bin bodies are connected by welding, clamping, locking, or a fixing member along the height direction of the bin body.

[0327] The fixing member can be at least one of a bolt and nut, a pin, a screw, or a rivet. Of course, the fixing member can also include a fixing plate and the like to fixedly connect two adjacent bin bodies along the height direction.

[0328] For example, two adjacent bin bodies are connected by a middle twist lock.

[0329] The two adjacent bin bodies along the height direction are connected by the fixing member, which can limit the two adjacent bin bodies along the height direction, thereby reducing the risk of mutual movement of the two adjacent bin bodies after stacking, and further improving the structural stability of the energy storage device 100.

[0330] The following describes the connection structure between two adjacent bin bodies, taking the first bin body 11 and the second bin body 21 as an example.

[0331] In some embodiments, referring to FIGS. 3-6 and 12, the first bin body 11 is located above the second bin body 21, the bottom of the first bin body 11 is provided with a limiting pin 222, the top of the second bin body 21 is provided with a limiting hole 2111, and the limiting pin 222 and the limiting hole 2111 are clamped.

[0332] In this way, two adjacent bin bodies along the height direction are connected by the limiting pin 222 and the limiting hole 2111, and a simple structure is used to limit the relative movement of the two adjacent bin bodies.

[0333] The limiting hole 2111 at the top of the second bin body 21 can be an opening for hoisting the second bin body 21, so that the second bin body 21 is hoisted by using the opening during the hoisting stage of the second bin body 21, and after the hoisting of the second bin body 21 is completed, the opening at the top of the second bin body 21 is matched with the limiting pin 222 at the bottom of the first bin body 11 above to limit the two adjacent bin bodies, thereby simplifying the structure of the bin body.

[0334] In some embodiments, referring to FIGS. 3-6 and 12, the bottom of the first container body 11 is provided with a first limiting piece 111, the first limiting piece 111 is provided with a limiting slot 1111, the top of the second container body 21 is provided with a second limiting piece 211, the second limiting piece 211 is provided with a limiting hole 2111, and the two ends of the limiting pin 222 are respectively connected with the limiting slot 1111 and the limiting hole 2111.

[0335] The second limiting piece 211 can be the hoisting part described above, and the limiting hole 2111 can be the opening described above. The limiting hole 2111 can also be a hole provided on the first container body 11.

[0336] In this embodiment, during the stacking of the first container body 11, the second container body 21 and the third container body 31 in the height direction, the limiting pin 222 cooperates with the limiting slot 1111 of the upper container body of the adjacent two container bodies and cooperates with the limiting hole 2111 of the lower container body of the adjacent two container bodies, so that the relative movement of the adjacent two container bodies is limited by a simple structure.

[0337] For example, the main control box and the high-voltage wire harness 71 are arranged at the end of the container body, and the power distribution control box is placed on the top, and the thermal management module 50 is placed in the first container body 11, so that the utilization of the container body is maximized. If a symmetrical container body is designed at the same time, the container body can be placed in a straight line on the site, and the energy density yield of the land area of the entire station is improved, and the land waste caused by the reservation of a maintenance passage of more than 3m between each container body in the traditional container body is reduced. Only a normal repainting maintenance passage (generally 0.3m) needs to be reserved between the container bodies, which greatly improves the land investment yield of the user and the energy yield per unit area of the user, and solves the problem of low area energy density of the existing energy storage device 100.

[0338] For example, since the main control box is placed at the end of the container body, the high-voltage wire harness 71 can be connected in advance inside the container body. After the three-layer container body is stacked on the site, the high-voltage wire harness 71 connected to the outside of the container body is connected to the corresponding connector of the main control box to realize the high-voltage connection between the container body and the PCS. The main control box is provided with a disconnecting switch 613 or a fuse switch, which can be manually operated when the high-voltage line needs to be disconnected in case of failure or maintenance, which is convenient to operate.

[0339] For example, the connection pipelines of the first container body 11, the second container body 21 and the thermal management module 50 are prefabricated with a certain length, and each connection point is connected by a quick plug connector. After the first container body 11, the second container body 21 and the third container body 31 are stacked, the connection pipelines of the first container body 11 and the second container body 21 and the thermal management module 50 are connected to the corresponding quick plug connectors, and thus the entire energy storage system 2000 is completed on the site.

[0340] Exemplarily, referring to FIGS. 3-6, the first and second container bodies 11 and 21 are provided with a control container 13 at one end in the length direction, the control container 13 is placed with a master control box, a water cooling pipeline connected with the top thermal management module 50, a communication wire harness connected between the boxes, an auxiliary source wire harness, etc., and the rest is an energy container 12, mainly placed with an electric box, a high-low voltage wire harness 72 and a water cooling pipeline connected with the electric box, a fire sensor, etc.

[0341] After the installation of each connecting piece is completed, the control container 13 has a sealing structure for the space where the wire harness and the pipeline are located, further optimizing the use environment of the wire harness and the pipeline, reducing the influence of ultraviolet aging and temperature change on the service life of the wire harness and the pipeline; the wire harness and the pipeline at this position are isolated from the energy container 12 and the control container 13 around, preventing the air tightness leakage at this position from affecting the energy container 12 and the control container 13, and improving the system reliability.

[0342] Exemplarily, referring to FIGS. 3-8, the thermal management module 50 is arranged in the third container body 31, the third container body 31 has air inlet around, air outlet at the top, and the inlet and outlet water pipes are connected with the thermal management module 50 through the quick plug connector from the first and second container bodies 11 and 21 at the bottom, facilitating installation and maintenance.

[0343] Exemplarily, referring to FIGS. 3-9, the third container body 31 has a control container 13 inside, which can include a master control module 63, a power distribution module 62, a fire control module 64, etc., the main function is to connect the external auxiliary power supply, and the voltage conversion is carried out through the transformer, different voltages are distributed to the corresponding power equipment, and the safety protection function such as circuit breaker and relay 612 is provided, further, it contains the function of SBMU (battery monitoring unit 110), the temperature and voltage data of each electric box and electric core are monitored in real time through the low-voltage wire harness 72, and are transmitted to the MBMU (main battery monitoring unit 120) for comprehensive diagnosis and analysis, and alarm information is given in time, the running state of the energy storage system 2000 is monitored, and the running data of the whole energy storage module is uploaded to the EMS through the low-voltage wire harness 72 from the master control power distribution box to the EMS, the customer can remotely view the running state of the energy storage system 2000 in the intelligent control terminal 130;

[0344] Exemplarily, referring to FIG. 10, the master module 61 can include a high-voltage connector, a fuse 611, a relay 612, a disconnector 613, a Hall sensor 615, etc.; mainly responsible for accommodating the electrical safety of the bin high-voltage loop, when a fault occurs, the disconnector 613 can be manually disconnected, the high-voltage loop is disconnected, or the emergency stop switch 614 on the maintenance board is pressed, the emergency stop switch 614 is connected with the relay 612 of the master module 61, when the emergency stop switch 614 is pressed, the relay 612 is disconnected, and the high voltage is also disconnected. At the same time, the Hall sensor 615 is connected with the SBMU, which can quickly judge the opening and closing state of the high-voltage loop through the upper computer, so as to ensure the safety detection.

[0345] Exemplarily, the number of series and parallel connection of the electric box inside the accommodating bin can be flexibly adjusted according to the needs of the system voltage, and further, the energy storage system 2000 of the same voltage platform can also be flexibly configured by adjusting the number of electric cores and electric boxes. The example shown is that 8 electric boxes in a single accommodating bin are connected in series to form a cluster of energy modules, which are connected to the master control box, and then output to the PCS by the master control box; or 4 electric boxes can be connected in series and then connected in parallel to a master control box, and then output to the PCS by each master control box.

[0346] Exemplarily, the greater the energy density of the entire energy storage system 2000, the greater the required refrigeration power, and the larger the volume and heat dissipation area of the thermal management module 50, so the volume of the thermal management module 50 needs to be increased, and therefore the height and length of the thermal management module 50 can also be increased.

[0347] Exemplarily, the accommodating bin can be designed according to different sizes of electric cores, and the electric box can be 2-4 in the height direction of the accommodating bin and 2-6 in the length direction of the accommodating bin. However, the external dimensions of the accommodating bin are the same, and only the bracket for installing the electric box inside the accommodating bin is adjusted according to the actual size and number of the electric box, which greatly improves the generalization and standardization of the container and further reduces the cost of the container.

[0348] The above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art can make various modifications and changes to the present disclosure. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present disclosure is included in the protection scope of the present disclosure.

Claims

1. An energy storage device comprising: A first energy storage bin, comprising a first bin body and a plurality of energy units; A second energy storage compartment, the second energy storage compartment comprising a second compartment body and a plurality of energy units; a storage bin, the storage bin comprising a third bin body and at least a portion of a control module and / or at least a portion of a thermal management module disposed within the third bin body, the control module being configured to electrically control the plurality of energy units in the first energy storage bin and the plurality of energy units in the second energy storage bin, the thermal management module being configured to manage the temperatures of the plurality of energy units in the first energy storage bin and the plurality of energy units in the second energy storage bin, the first bin body, the second bin body, and the third bin body being arranged along a height direction of the energy storage device; Among them, the heights of the first warehouse body, the second warehouse body and the third warehouse body are all less than the height of a standard container, and the sum of the heights of the first warehouse body, the second warehouse body and the third warehouse body is greater than or equal to 0.8 times the height of a standard container and less than or equal to 1.5 times the height of a standard container.

2. The energy storage device according to claim 1, wherein: The number of the control module is one.

3. The energy storage device according to claim 1 or 2, wherein: The weight of the first energy storage bin, the second energy storage bin and the containing bin is less than or equal to 45 tons.

4. The energy storage device according to any one of claims 1 to 3, wherein: The third storage body is arranged above the first storage body and the second storage body.

5. The energy storage device according to claim 4, wherein: The thermal management module includes a fan and a condenser, which are located on the top of the third storage body. The top wall and / or side wall of the third storage body are provided with ventilation holes, which are used for ventilation of the thermal management module.

6. The energy storage device according to any one of claims 1 to 5, wherein: The energy storage device includes a plurality of battery devices, each of which includes a thermal management component and a plurality of energy units, the thermal management component is used to regulate the temperature of the energy units, some of the battery devices are accommodated in the first compartment, and the remaining battery devices are accommodated in the second compartment; The accommodating bin includes a first connector, the first energy storage bin and the second energy storage bin include a second connector, the first connector is connected to the thermal management module, the second connector is connected to the thermal management component, and the first connector is used to cooperate with the first energy storage bin and the second connector of the second energy storage bin.

7. The energy storage device according to claim 6, wherein: The thermal management module is connected to the multiple thermal management components through a liquid cooling pipeline. The liquid cooling pipeline includes a main pipeline and multiple branch pipelines. The multiple branch pipelines are connected to the main pipeline in parallel. The main pipeline is connected to the thermal management module, and the multiple branch pipelines are respectively connected to the multiple thermal management components. The main pipeline is located above the multiple battery devices, or the main pipeline is located below the multiple battery devices.

8. The energy storage device according to any one of claims 1 to 7, wherein: The height of the third storage body is smaller than the heights of the first storage body and the second storage body; and / or, The height of the first warehouse body is the same as the height of the second warehouse body.

9. The energy storage device according to any one of claims 1 to 7, wherein: The first storage body, the second storage body and the third storage body have the same height.

10. The energy storage device according to any one of claims 1 to 9, wherein: The dimension of the energy storage device along its length direction is consistent with the dimension of the standard container along its length direction, and the dimension of the energy storage device along its width direction is consistent with the dimension of the standard container along its width direction.

11. The energy storage device according to any one of claims 1 to 10, wherein: The sum of the heights of the first warehouse body, the second warehouse body, and the third warehouse body is equal to the height dimension of the standard container.

12. The energy storage device according to any one of claims 1 to 11, wherein: The control module includes a master control module, which is housed in the third compartment and electrically connected to the energy units in the first compartment and the second compartment.

13. The energy storage device according to claim 12, wherein: The control module includes two main control modules, which are respectively located in the first warehouse and the second warehouse, and the two main control modules are used to control the input or output of electrical energy of the energy units in the first warehouse and the second warehouse respectively. The two main control modules are electrically connected to the main control module.

14. The energy storage device according to claim 12 or 13, wherein: The control module includes two fire control modules, which are respectively located in the first warehouse and the second warehouse, and are used to extinguish fires on the energy units in the first warehouse and the second warehouse, respectively.

15. The energy storage device according to any one of claims 12 to 14, wherein: The third storage body, the first storage body and the second storage body are arranged in sequence from the top to the bottom of the energy storage device; The control module includes a branch circuit breaker, and the branch circuit breaker is arranged in the second compartment; and / or, The control module includes a main circuit breaker, and the circuit breaker is disposed in the second compartment.

16. The energy storage device according to any one of claims 1 to 15, wherein: The energy unit is a battery cell, and the weight of a single energy unit is 5kg to 60kg.

17. The energy storage device according to any one of claims 1 to 16, wherein: The weight of the first energy storage bin is M, the total weight of the energy units in the first energy storage bin is M1, (M1 / M)×100%≥60%; and / or, The weight of the second energy storage bin is M2, and the total weight of the energy units in the second energy storage bin is M3, (M3 / M2)×100%≥60%.

18. The energy storage device according to claim 17, wherein: (M1 / M)×100%≥80%; and / or, (M3 / M2)×100%≥80%.

19. The energy storage device according to any one of claims 1 to 18, wherein: The weight of the first energy storage compartment is M. A plurality of battery devices are disposed in the first compartment, the battery devices comprising a box and a plurality of energy units, the plurality of energy units being accommodated in the box. The total weight of the battery devices in the first compartment is M4, where 70% ≤ (M4 / M) × 100% ≤ 90%; and / or, The weight of the second energy storage compartment is M2. A plurality of battery devices are arranged in the second compartment. The battery devices include a box and a plurality of energy units. The plurality of energy units are accommodated in the box. The total weight of the battery devices in the second compartment is M5, 70%≤(M5 / M)×100%≤90%.

20. The energy storage device according to any one of claims 1 to 19, wherein: The volume of the first compartment is V, the total volume of the energy units in the first compartment is V1, (V1 / V)×100%≥30%; and / or, The volume of the second compartment is V2, the total volume of the energy units in the second compartment is V3, and (V3 / V2)×100%≥30%.

21. The energy storage device according to claim 20, wherein: (V1 / V)×100%≥50%; and / or, (V3 / V2)×100%≥50%.

22. The energy storage device according to any one of claims 1 to 21, wherein: The volume of the first compartment is V, a plurality of battery devices are arranged in the first compartment, the battery devices include a box and a plurality of energy units, the plurality of energy units are accommodated in the box, the total volume of the battery devices in the first compartment is V4, 50%≤(V4 / V)×100%≤80%; and / or, The volume of the second compartment is V2, and multiple battery devices are arranged in the second compartment. The battery devices include a box and multiple energy units. The multiple energy units are accommodated in the box. The total volume of the battery devices in the second compartment is V5, 50%≤(V5 / V2)×100%≤80%.

23. The energy storage device according to any one of claims 1 to 22, wherein: The energy of the first energy storage bin or the second energy storage bin is E, the size of the first bin body or the second bin body along the length direction of the energy storage device is a, and the size of the first bin body or the second bin body along the width direction of the energy storage device 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 energy storage device further includes a connecting mechanism, wherein the connecting mechanism is configured to connect the first warehouse body and the second warehouse body, and / or the connecting mechanism is configured to connect the second warehouse body and the third warehouse body; In which, the connecting mechanism includes a support member, which is arranged between the first warehouse body and the second warehouse body along the height direction of the energy storage device, and / or the support member is arranged between the second warehouse body and the third warehouse body along the height direction of the energy storage device; the sum of the sum of the heights of the first warehouse body, the second warehouse body and the third warehouse body and the sum of the heights of the support member is greater than or equal to 0.8 times the height of a standard container, and less than or equal to 1.5 times the height of a standard container.

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: At least one of the first warehouse body and the second warehouse body has an energy warehouse and a control warehouse inside, the energy warehouse is used to accommodate at least one of the energy units, and at least part of the control module is accommodated in the control warehouse; the energy warehouse is provided with a first warehouse door along at least one side of the width direction of the energy storage device, and the control warehouse is provided with a second warehouse door along at least one side of the width direction of the energy storage device.

28. An energy storage system comprising a power conversion device and the energy storage device according to any one of claims 1 to 27, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

29. A charging network comprising a charging pile and the energy storage device according to any one of claims 1 to 27 or the energy storage system according to claim 28, wherein the energy storage device is used to provide electrical energy to the charging pile.

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