Energy storage device, energy storage system and charging network

Abstract

The embodiment of the utility model provides an energy storage device, an energy storage system and a charging network. The energy storage device comprises a bin body, a control module, a heat management module and a plurality of battery devices. The size of the bin body in the height direction is smaller than or equal to the size of a standard container in the height direction. Each battery device comprises a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the plurality of battery devices are arranged in a layered mode in the height direction of the bin body, and the number of layers arranged in a layered mode is larger than or equal to 7. The control module is used for electrically controlling the plurality of battery devices. The thermal management module is used for managing the temperature of a plurality of energy units of the energy storage device. A first containing cavity and a second containing cavity are formed in the bin body, at least part of the second containing cavity and the first containing cavity are arranged in the height direction of the bin body, and at least part of the heat management module and / or at least part of the control module are contained in the second containing cavity. And the main control module of the control module is arranged in the second accommodating cavity above or below the first accommodating cavity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to an energy storage device, an energy storage system and a charging network. BACKGROUND

[0002] 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 cyclic storage and release of 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 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.

[0003] 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 while improving the volumetric energy density of energy storage devices is a continuous improvement technical problem in energy storage technology. CONTENT OF THE INVENTION

[0004] Therefore, the embodiments of the present application expect 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 while improving the volumetric energy density of the energy storage device.

[0005] To achieve the above-mentioned purpose, a first aspect of the embodiments of the present application provides an energy storage device, comprising:

[0006] a warehouse body, the size of the warehouse body along its height direction is less than or equal to the size of a standard container along its height direction;

[0007] a plurality of battery devices, the battery device comprises a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the plurality of battery devices are arranged in layers along the height direction of the warehouse body, and the number of layers of the layered arrangement is greater than or equal to 7 layers;

[0008] a control module, the control module is used for electrically controlling the plurality of battery devices;

[0009] a thermal management module, the thermal management module is used for managing the temperature of the plurality of energy units of the energy storage device.

[0010] The energy storage device provided by the embodiments of the present application can reduce the total weight of the energy storage device by setting the size of the bin body along the height direction to be less than or equal to the size of a standard container along the height direction, that is, by reducing the size of the bin body, thereby improving the problem of overweight transportation and reducing the space occupied by the energy storage device, reducing the transportation cost of the energy storage device, and thus reducing the use cost of the energy storage device. The embodiments of the present application can increase the number of layers of the battery device as much as possible under the premise of meeting the transportation weight and space occupation, thereby increasing the power of the energy storage device as much as possible, and further improving the volumetric energy density of the energy storage device. The embodiments of the present application set the size of the bin body along the height direction to be less than or equal to the size of a standard container along the height direction, and the number of layers of the battery device arranged in layers is greater than or equal to 7, thereby reducing the use cost of the energy storage device while improving the volumetric energy density of the energy storage device. In addition, the energy storage device can constitute a complete system to provide or store electric energy, and when additional energy storage devices are needed, new energy storage devices can be directly stacked on the original energy storage devices, without additional infrastructure and land costs, further improving the use convenience of the energy storage device and reducing the use cost of the energy storage device.

[0011] In some embodiments, the bin body has a first accommodating cavity and a second accommodating cavity in the interior, the first accommodating cavity is used to accommodate the plurality of battery devices, and at least part of the heat management module and / or at least part of the control module are accommodated in the second accommodating cavity.

[0012] By setting the interior of at least part of the bin body with a first accommodating cavity and a second accommodating cavity, and arranging at least part of the control module and / or at least part of the heat management module in the bin body, the space in the bin body can be fully utilized, and the space utilization of the bin body is further improved.

[0013] In some embodiments, part of the second accommodating cavities are arranged along the length direction of the bin body with the first accommodating cavity.

[0014] By arranging the second accommodating cavities at the end of the bin body, the space utilization in the bin body is maximized, and in addition, the second accommodating cavities can be arranged closer to the first accommodating cavities, thereby improving the compactness of the structure.

[0015] In some embodiments, at least part of the second accommodating cavities are arranged along the height direction of the bin body with the first accommodating cavity.

[0016] Part of the second accommodating cavities can be arranged along the height direction of the bin body with the first accommodating cavity, or all of the second accommodating cavities can be arranged along the height direction of the bin body with the first accommodating cavity.

[0017] In some embodiments, the control module comprises a master control module, the master control module is arranged in the second accommodating cavity above or below the first accommodating cavity, and the master control module is configured to control input and output of high-voltage electric energy of the battery device.

[0018] By arranging the master control module in the second accommodating cavity above or below the first accommodating cavity, connection between the master control module and the battery device is facilitated.

[0019] In some embodiments, the energy storage device comprises a spare parts bin, the spare parts bin is arranged on one side of the bin body in the length direction, and at least part of the thermal management module and / or at least part of the control module are accommodated in the spare parts bin.

[0020] By arranging the control module and the thermal management module in the spare parts bin outside the bin body, the battery device and the control module and the thermal management module and other supporting modules are configured flexibly, and the energy storage system is supplemented conveniently. At the same time, the battery device and the supporting control module, the thermal management module and other modules are decoupled, and maintenance is convenient, so that the control module, the thermal management module and other modules can be repaired and replaced individually, further reducing the use cost.

[0021] In some embodiments, the bin body has the same size in the height direction as the height direction of the spare parts bin, and the bin body has the same size in the width direction as the width direction of the spare parts bin.

[0022] In this way, the connection between the bin body and the spare parts bin is facilitated, the appearance of the energy storage device is improved, and the compactness of the structure of the energy storage device is improved.

[0023] In some embodiments, the top wall and / or the side wall of the spare parts bin is provided with a ventilation opening, and the ventilation opening is configured to ventilate the thermal management module.

[0024] By providing the ventilation opening, the thermal management module can be cooled, so that the thermal management module can have more heat dissipation channels, and the temperature control effect of the thermal management module is improved.

[0025] In some embodiments, the control module comprises at least one of a master control module, a power distribution module, a master control module and a fire control module.

[0026] The master control module is configured to control input and output of high-voltage electric energy of the battery device in the bin body. The master control module is configured to control switching value action of the master control module in the bin body.

[0027] The fire control module is configured to control the action of the fire-fighting element when the temperature of the bin body is unbalanced and a fire occurs. The fire-fighting element can be a fire extinguisher, and the fire-fighting element can be arranged in the bin body.

[0028] The power distribution module is used for electrically connecting the master control module, the general control module and the fire control module, so as to maintain the normal operation of the master control module, the general control module and the fire control module.

[0029] In some embodiments, the size of the warehouse body along the height direction is greater than or equal to one half of the size of the standard container along the height direction.

[0030] When the size of the warehouse body along the first direction is greater than or equal to one half of the size of the standard container along the first direction, the energy storage device has high manufacturability, high volumetric energy density, and is more convenient to transport and install.

[0031] In some embodiments, the standard container is a 20-foot standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm.

[0032] In some embodiments, the weight of the energy storage device is M, and M is less than or equal to 36 tons.

[0033] In order to make the energy storage device meet the requirements of some countries for the transport limit, the overall weight of the energy storage device is controlled to be within 36 tons, and the integration of the energy storage device 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.

[0034] Embodiments of the present application also provide an energy storage system, which comprises a plurality of the above-mentioned energy storage devices, and at least part of the energy storage devices are stacked along the height direction of the energy storage device.

[0035] The energy storage device of the energy storage system provided in the embodiments of the present application has the size of the bin body in the height direction being less than or equal to the size of the standard container in the height direction, that is, the size of the bin body is reduced, so that the total weight of the energy storage device is reduced, the problems of transportation overweight and space occupation of the energy storage device are improved, the transportation cost of the energy storage device is reduced, and the use cost of the energy storage device is reduced. The embodiments of the present application arrange the plurality of battery devices in layers along the height direction of the bin body, and the number of layers of the battery devices arranged in layers is greater than or equal to 7, that is, under the premise of meeting the transportation weight and space occupation, the number of layers of the battery devices is as high as possible, so that the electric quantity of the energy storage device is as high as possible, and the volumetric energy density of the energy storage device is improved. The embodiments of the present application have the size of the bin body in the height direction being less than or equal to the size of the standard container in the height direction, and the number of layers of the battery devices arranged in layers is greater than or equal to 7, so that the use cost of the energy storage device is reduced, and the volumetric energy density of the energy storage device is improved. In addition, the energy storage device can constitute a complete system to provide or store electric energy, and when the energy storage device needs to be supplemented, the new energy storage device can be directly stacked on the original energy storage device, without additional infrastructure and land cost, further improving the use convenience of the energy storage device and reducing the use cost of the energy storage device.

[0036] The embodiments of the present application also provide an energy storage system, which comprises a power conversion device and the energy storage device described above, and the power conversion device is used for electrically connecting a power generation device and the energy storage device.

[0037] The energy storage device of the energy storage system provided by the embodiments of the present application can reduce the total weight of the energy storage device by setting the size of the bin body along the height direction to be less than or equal to the size of a standard container along the height direction, that is, by reducing the size of the bin body, thereby improving the problems of transportation overweight and reducing the occupied space of the energy storage device, reducing the transportation cost of the energy storage device, and thus reducing the use cost of the energy storage device. The embodiments of the present application arrange the plurality of battery devices in layers along the height direction of the bin body, and the number of layers of the layered arrangement is greater than or equal to 7, that is, under the premise of meeting the transportation weight and the occupied space, the number of layers of the battery device can be increased as much as possible, thereby the electric quantity of the energy storage device can be increased as much as possible, and thus the volumetric energy density of the energy storage device can be increased as much as possible. The embodiments of the present application set the size of the bin body along the height direction to be less than or equal to the size of a standard container along the height direction, and the number of layers of the layered arrangement of the battery device is greater than or equal to 7, thereby reducing the use cost of the energy storage device while increasing the volumetric energy density of the energy storage device. In addition, the energy storage device can constitute a complete system to provide or store electric energy, and when additional energy storage devices are needed, new energy storage devices can be directly stacked on the original energy storage devices, without additional infrastructure and land costs, thereby further improving the use convenience of the energy storage device and reducing the use cost of the energy storage device.

[0038] The embodiments of the present application also provide a charging network comprising a charging pile and the energy storage device or the energy storage system described above, and the energy storage device is used to provide electric energy for the charging pile.

[0039] The energy storage device for the charging network provided in this application embodiment reduces the overall weight of the energy storage device by setting the dimensions of the storage compartment along its height direction to be less than or equal to the dimensions of a standard shipping container along its height direction. This helps to alleviate the problem of excessive weight during transportation and reduce the space occupied by the energy storage device, thereby reducing the transportation cost and ultimately lowering the operating cost of the energy storage device. This application embodiment also arranges multiple battery devices in layers along the height direction of the storage compartment, with the number of layers being greater than or equal to seven. This means that, while meeting the requirements of transportation weight and space occupation, the number of battery device layers can be increased as much as possible, thereby maximizing the energy capacity of the energy storage device and increasing its volumetric energy density. By setting the dimensions of the storage compartment along its height direction to be less than or equal to the dimensions of a standard shipping container along its height direction, and arranging the battery devices in layers greater than or equal to seven, this application embodiment increases the volumetric energy density of the energy storage device while reducing its operating cost. Furthermore, energy storage devices can form a complete system to provide or store electrical energy. When additional energy storage devices are needed, new energy storage devices can be stacked directly on the existing energy storage devices without additional infrastructure and land costs, which further improves the ease of use of energy storage devices and reduces their operating costs. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a charging network provided in some embodiments of this disclosure;

[0041] Figure 2 This is a schematic diagram of the structure of the energy storage system provided in the first embodiment of the present disclosure;

[0042] Figure 3 This is a schematic diagram of the energy storage system provided in the second embodiment of the present disclosure;

[0043] Figure 4 This is a schematic diagram of the energy storage system provided in the third embodiment of the present disclosure;

[0044] Figure 5 This is a schematic diagram of the structure of the energy storage device provided in the first embodiment of the present disclosure;

[0045] Figure 6 for Figure 5 Exploded view of a medium-sized energy storage device;

[0046] Figure 7 This is a schematic diagram of the structure of the energy storage device provided in the second embodiment of the present disclosure;

[0047] Figure 8 This is a schematic diagram of the structure of the control module provided in some embodiments of this disclosure;

[0048] Figure 9 A structural schematic diagram of a battery cell provided for some embodiments of the present disclosure.

[0049] Legend of reference signs

[0050] 1000, charging network; 2000, energy storage system; 100, energy storage device; 10, bin body; 20, battery device; 21, box body; 211, first box body; 212, second box body; 22, energy unit; 40, accessory bin; 41, ventilation opening; 411, air inlet; 412, air outlet; 50, thermal management module; 60, control module; 61, main control module; 62, power distribution module; 63, master control module; 64, fire control module; 200, charging pile; 300, power conversion device; 500, connecting mechanism; 3000, power generation device. DETAILED DESCRIPTION

[0051] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and the above drawings description of the present application are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of the present application, the technical terms "first", "second", "third", "fourth" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0054] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Unless otherwise specified, all technical features and optional technical features of the present application can be combined with each other to form new technical solutions.

[0055] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0056] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0057] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or can be contact between two objects in contact with interaction force.

[0059] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "projection" refers to the orthographic projection of parallel projection lines perpendicular to the projection plane.

[0060] In the following, the present application will be described in detail.

[0061] With the development of clean energy, more and more devices use electric energy as driving energy, and then as power batteries that can store more electric energy and can be charged and discharged repeatedly, such as lithium ion batteries. Among them, power batteries are not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields.

[0062] In the embodiments of the present application, the energy unit can be a secondary battery, which refers to an energy unit that can be activated by charging after discharging to continue use.

[0063] The energy unit can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0064] The energy unit generally includes an electrode assembly. For example only, the electrode assembly includes a positive electrode, a negative electrode, and a separator disposed between the negative electrode and the positive electrode. During the charging and discharging process of the energy unit, active ions (e.g., lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting and allow the active ions to pass through.

[0065] 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.

[0066] For example, the positive electrode active material can include at least one of lithium-containing phosphates, lithium transition metal oxides, and modified compounds thereof. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries can also be used.

[0067] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0068] For 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.

[0069] 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.

[0070] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0071] In some embodiments, the separator is a separator film. The present application does not have a particular limitation on the type of separator film, and any known porous structure separator film with good chemical stability and mechanical stability can be selected.

[0072] For 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.

[0073] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode and the negative electrode, and functions to transport ions and separate the positive electrode and the negative electrode.

[0074] In some embodiments, the energy unit further comprises an electrolyte, which functions to conduct ions between the positive electrode and the negative electrode. The type of electrolyte is not particularly limited in the present application, and can be selected as desired. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0075] The electrode assembly can be in a wound structure, a stacked structure, or a hybrid structure of a wound structure and a stacked structure.

[0076] 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.

[0077] In some embodiments, the electrode assembly is in a stacked structure.

[0078] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape.

[0079] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include positive tabs and negative tabs.

[0080] 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., a polypropylene housing), 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 encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, it is used to encapsulate the electrode assembly and the electrolyte, etc.

[0081] 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 application.

[0082] In some embodiments, the housing comprises an end cap and a housing body, the housing body is provided with an opening, and the end cap is provided on the opening. The housing body can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0083] In some embodiments, at least one electrode terminal is arranged on the shell, and the electrode terminal is electrically connected with the tab. The electrode terminal can be directly connected with the tab or indirectly connected with the tab through the current collecting member. The electrode terminal can be arranged on the end cover or the shell.

[0084] The area energy density requirement of the power station on the energy storage device is higher and higher, so in order to improve the electric quantity, the total weight of the energy storage device 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 transportation, and there is a transportation weight limit in general land and sea transportation, so there is a contradiction between the improvement of the energy density and the weight of the energy storage device.

[0085] Therefore, the embodiment of the present application provides an energy storage device. The energy storage device comprises a warehouse body, a control module, a thermal management module and a plurality of battery devices. The size of the warehouse body along the height direction thereof is less than or equal to the size of a standard container along the height direction thereof. The battery device comprises a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the plurality of battery devices are arranged in layers along the height direction of the warehouse body, and the number of layers of the layered arrangement is greater than or equal to 7 layers. The control module is used for electrically controlling the plurality of battery devices. The thermal management module is used for managing the temperature of the plurality of energy units of the energy storage device.

[0086] The energy storage device provided by the embodiment of the present application can reduce the total weight of the energy storage device by setting the size of the warehouse body along the height direction thereof to be less than or equal to the size of a standard container along the height direction thereof, which is beneficial to improve the problem of transportation overweight and reduce the space occupied by the energy storage device, reduce the transportation cost of the energy storage device, and thus reduce the use cost of the energy storage device. The embodiment of the present application arranges the plurality of battery devices in layers along the height direction of the warehouse body, and the number of layers of the layered arrangement is greater than or equal to 7 layers, that is, under the premise of meeting the transportation weight and the occupied space, the number of layers of the battery device can be increased as much as possible, so that the electric quantity of the energy storage device can be increased as much as possible, and thus the volumetric energy density of the energy storage device can be increased. The embodiment of the present application sets the size of the warehouse body along the height direction thereof to be less than or equal to the size of a standard container along the height direction thereof, and the number of layers of the layered arrangement of the battery device is greater than or equal to 7 layers, which reduces the use cost of the energy storage device while improving the volumetric energy density of the energy storage device. In addition, the energy storage device can constitute a complete system to provide or store electric energy, and when additional energy storage devices are needed, new energy storage devices can be directly stacked on the original energy storage devices without additional infrastructure and land costs, further improving the use convenience of the energy storage device and reducing the use cost of the energy storage device.

[0087] The technical solutions described in the embodiment of the present application are suitable for energy storage devices, energy storage systems comprising energy storage devices and charging networks.

[0088] The energy storage device can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electric energy as needed and output the electric energy at an appropriate time. For example, the energy storage device can store electric energy during a low electricity consumption period, and provide electric energy for relevant users or electric equipment during a high electricity consumption period. The energy storage system provided by the embodiments of the present application can be any power system that needs to use an energy storage device.

[0089] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the charging network 1000 provided by an embodiment of the present application is shown. The charging network 1000 provided by the embodiments of the present application includes a charging pile 200, which is used to charge electric equipment. The charging network 1000 can also include an energy storage device 100 or an energy storage system 2000, the energy storage device 100 is electrically connected with the charging pile 200, and the energy storage device 100 is used to provide electric energy for the charging pile 200.

[0090] It should be noted that the charging pile 200 and the energy unit 22 in the energy storage device 100 are electrically connected through a cable, and the energy unit 22 can provide the electric energy stored by itself to the charging pile 200. The charging pile 200 has one or more connectors, which are used to connect with electric equipment (such as a vehicle), so as to charge the electric equipment. The charging network 1000 applies the energy storage device 100, which can effectively improve the reliability of the charging network 1000, and also helps to improve the flexibility of the charging network 1000 when deployed.

[0091] The energy storage device 100 can be located inside the charging pile 200 (for example, a charging and storage integrated machine), or outside the charging pile 200.

[0092] In one charging network 1000, the charging pile 200 can be one, and the energy storage device 100 provides electric energy for one charging pile 200; the charging pile 200 can also be multiple, and the energy storage device 100 provides electric energy for multiple charging piles 200.

[0093] The energy storage device 100 can include multiple energy units 22, and the energy units 22 are electrically connected with the charging pile 200, so as to provide electric energy for the charging pile 200 by the energy units 22.

[0094] As an example, as shown in Figure 1 , the charging network 1000 includes one energy storage device 100 and two charging piles 200, and one energy storage device 100 provides electric energy for two charging piles 200.

[0095] Please refer to Figure 2 , Figure 2A structural schematic diagram of the energy storage system 2000 is provided in an embodiment of the present application. The embodiment of the present application provides an energy storage system 2000. The energy storage system 2000 comprises a power conversion device 300, which can be electrically connected to a power generation device 3000 and an energy storage device 100 to convert the power provided by the power generation device 3000. The power conversion device 300 guides the power provided by the power generation device 3000 to the energy storage device 100 after power conversion.

[0096] The power conversion device 300 is used to be connected between the power generation device 3000 and the energy storage device 100. The power generation device 3000 is used to generate power, and the power generation device 3000 is used to store the power generated by the power generation device 3000 to the energy storage device 100 through the power conversion device 300. The energy storage system 2000 applies the energy storage device 100, which can effectively improve the operation reliability of the energy storage system 2000. In specific implementation, the power generation 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 application.

[0097] As an example, as shown in Figure 2 The energy storage system 2000 comprises the energy storage device 100 and the power conversion device 300, and two power generation devices 3000 respectively transmit the generated power to the power conversion device 300, and guide the power to the energy storage device 100 through the power conversion device 300 for storage.

[0098] Please refer to Figures 3-4 The energy storage system 2000 comprises a plurality of energy storage devices 100 according to the embodiments of the present application, and at least part of the energy storage devices 100 are arranged in a stacking manner along the height direction of the energy storage device 100.

[0099] That is, all of the energy storage devices 100 can be stacked along the height direction of the energy storage device 100, or part of the energy storage devices 100 can be stacked along the height direction of the energy storage device 100, and the other part of the energy storage devices 100 can be arranged along the length direction or the width direction of the energy storage device 100.

[0100] Please refer to Figures 5-7 The embodiment of the present application provides an energy storage device 100. The energy storage device 100 comprises a warehouse body 10, a control module 60, a thermal management module 50 and a plurality of battery devices 20. The size of the warehouse body 10 along the height direction is less than or equal to the size of a standard container along the height direction. The battery device 20 comprises a box body 21 and a plurality of energy units 22, the plurality of energy units 22 are contained in the box body 21, the plurality of battery devices 20 are arranged in layers along the height direction of the warehouse body 10, and the number of layers of the arranged layers is greater than or equal to 7 layers. The control module 60 is used to electrically control the plurality of battery devices 20. The thermal management module 50 is used to manage the temperature of the plurality of energy units 22 of the energy storage device 100.

[0101] The storage body 10 can be a cabinet or a container, and the storage body 10 has a cavity inside which can accommodate other components of the energy storage device 100. The storage body 10 can have a hexahedral structure.

[0102] The storage body 10 generally has a cuboid structure, and the length direction and the width direction of the storage body 10 are parallel to the horizontal plane. The length direction of the storage body 10 is parallel to the longest side of the cuboid structure of the storage body 10. The height direction of the storage body 10 is perpendicular to the ground. For example, as shown in Figure 5 The length direction of the storage body 10 is represented by X, the width direction of the storage body 10 is represented by Y, and the height direction of the storage body 10 is represented by Z.

[0103] The energy storage device 100 is arranged along the height direction of the energy storage device 100, which can be understood as that a plurality of energy storage devices 100 are stacked or connected along the height direction of the energy storage device 100.

[0104] The energy storage device 100 further comprises a plurality of energy units 22, which are used to provide or store electric energy.

[0105] For example, the energy unit 22 can be a battery cell.

[0106] Referring to Figures 5-7 The plurality of battery devices 20 can be arranged in layers along the height direction of the storage body 10, and each layer of battery devices 20 comprises a plurality of columns of battery devices 20.

[0107] The number of layers of the battery devices 20 arranged in layers is greater than or equal to 7 layers, which is beneficial to increase the number of battery devices 20, so as to increase the electric quantity of the energy storage device 100 as much as possible, and further increase the volumetric energy density of the energy storage device 100.

[0108] For example, the battery devices 20 in the energy storage device 100 can be 7 layers, 8 layers, 9 layers, 10 layers, 11 layers, 12 layers, 15 layers, 20 layers or more.

[0109] The battery device 20 (Battery Apparatus) mentioned in the embodiments of the present application can comprise one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can comprise a plurality of battery cells connected in series, in parallel or in a hybrid manner through a busbar component.

[0110] In some embodiments, the battery cell assembly (Battery Cell Assembly) is generally formed by arranging a plurality of battery cells.

[0111] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0112] In some embodiments, the battery device 20 can be a battery pack, which includes a box 21 and one or more battery cell assemblies accommodated in the box 21.

[0113] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box 21 by fixing the battery module in the box 21.

[0114] As an example, the battery cell assembly can also be accommodated in the box 21 by directly fixing a plurality of battery cells in the box 21.

[0115] As an example, referring to Figure 9 , the box 21 can include a first box 211 and a second box 212. The first box 211 and the second box 212 are buckled so that a closed space is formed inside the box 21 to accommodate the battery cell assembly. Here, closed means covered or closed, which can be sealed or unsealed. The first box 211 can be a top cover or a bottom plate.

[0116] As an example, the box 21 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that a closed space is formed inside the box 21 to accommodate the battery cell assembly.

[0117] By providing the control module 60, the control module 60 can control the input or output of electrical energy of the energy unit 22, and realize electrical control of the plurality of battery devices 20.

[0118] By providing the thermal management module 50, the thermal management module 50 can manage the temperature of the energy unit 22, and reduce the risk of temperature runaway of the battery device 20.

[0119] Here, the energy storage device 100 is provided with the box 10, the control module 60, the thermal management module 50 and the plurality of battery devices 20, the plurality of battery devices 20 are arranged in the box 10, the control module 60 can control the input or output of electrical energy of the energy unit 22, and realize electrical control of the plurality of battery devices 20, the thermal management module 50 can manage the temperature of the energy unit 22, and reduce the risk of temperature runaway of the battery device 20. That is, the energy storage device 100 can constitute a complete system to provide or store electrical energy.

[0120] Here, the energy storage device 100 is the smallest unit, and can be arranged in an upward stack.

[0121] Exemplarily, the size of the warehouse body 10 along the height direction is less than or equal to the size of a standard container along the height direction. In this way, 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 during transportation as much as possible.

[0122] Exemplarily, the size of the warehouse body 10 along the height direction is greater than or equal to one half of the size of a standard container along the height direction.

[0123] When the size of the warehouse body 10 along the first direction is greater than or equal to one half of the size of a standard container along the first direction, the energy storage device 100 has high manufacturability, high volume energy density, and is more convenient to transport and install.

[0124] Exemplarily, the size of the warehouse body 10 along the height direction is equal to one half of the size of a standard container along the height direction.

[0125] By setting the size of the warehouse body 10 along the height direction to be equal to one half of the size of a standard container along the height direction, it is possible to improve the power of the energy storage device 100 as much as possible, which is beneficial to improve the problem of overweight transportation and reduce the transportation cost of the energy storage device 100. In addition, during transportation, two energy storage devices 100 can occupy the space of one standard container, further reducing the transportation cost of the energy storage device 100.

[0126] Please refer to Figure 4 , the size a of the warehouse body 10 along the length direction is the distance between the two ends of the warehouse body 10 along the length direction; the size b of the warehouse body 10 along the width direction is the distance between the two ends of the warehouse body 10 along the width direction; and the size h of the warehouse body 10 along the height direction is the distance between the two ends of the warehouse body 10 along the height direction. The above-mentioned size a, size b and size h are the maximum sizes of the outer contour of the warehouse body 10 in the corresponding direction. The warehouse body 10 can include eight corner pieces and six box walls, the eight corner pieces are located at the eight corners of the cuboid structure of the warehouse body 10, and the eight corner pieces respectively protrude from the box walls of the warehouse body 10, the total span of the two corner pieces arranged along the height direction is the height of the warehouse body 10, the total span of the two corner pieces arranged along the length direction is the length of the warehouse body 10, and the total span of the two corner pieces arranged along the width direction is the width of the warehouse body 10. When calculating the size of the warehouse body 10, the pipelines and cables connected to the warehouse body 10 and located outside the warehouse body 10 can not be included in the size of the warehouse body 10.

[0127] The standard container can be a size of a standard container in a transportation process, such as 10 feet, 20 feet, 30 feet, 40 feet, or 45 feet, which meets the corresponding standards, and the length, width, and height thereof have corresponding sizes, respectively. The standard container can refer to GB / T1413-2023 Series 1 Container Classification, Size, and Rated Mass.

[0128] The 10 feet can include: a length direction size of 2991mm, a tolerance of 0mm-5mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2438mm or less than 2438mm; a tolerance of 0mm-5mm.

[0129] The 20 feet can include: a length direction size of 6058mm, a tolerance of 0mm-6mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2896mm, 2591mm, or not more than 2438mm; a tolerance of 0mm-5mm.

[0130] The 30 feet can include: a length direction size of 9125mm, a tolerance of 0mm-10mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2896mm, 2591mm, or not more than 2438mm; a tolerance of 0mm-5mm.

[0131] The 40 feet can include: a length direction size of 12192mm, a tolerance of 0mm-10mm; a width direction size of 2438mm, a tolerance of 0mm-5mm; and a height direction size of 2896mm, 2591mm, or not more than 2438mm; a tolerance of 0mm-5mm.

[0132] The 45 feet can include: a length direction size of 13716mm, a tolerance of 0mm-10mm; a width direction size of 2438mm, a tolerance of 350mm-5mm; and a height direction size of 2591mm or 2896mm; a tolerance of 0mm-5mm.

[0133] In the embodiments of the present application, for the warehouse body 10 of various sizes, the sizes within the range of ±1%, ±2%, ±3%, ±4%, and ±5% of the size can be considered as sizes within the tolerance range.

[0134] The energy storage device 100 provided by the embodiments of the present application can reduce the total weight of the energy storage device 100 by setting the size of the bin body 10 along the height direction to be less than or equal to the size of the standard container along the height direction, that is, by reducing the size of the bin body 10, which can help to improve the problem of transportation overweight and reduce the space occupied by the energy storage device 100, thereby reducing the transportation cost of the energy storage device 100, and thus reducing the use cost of the energy storage device 100. The embodiments of the present application can increase the number of layers of the battery device 20 arranged along the height direction of the bin body 10 to more than or equal to 7 layers, that is, under the premise of meeting the transportation weight and space occupation, the number of layers of the battery device 20 can be increased as much as possible, thereby the power of the energy storage device 100 can be increased as much as possible, and thus the volumetric energy density of the energy storage device 100 can be increased. The embodiments of the present application set the size of the bin body 10 along the height direction to be less than or equal to the size of the standard container along the height direction, and the number of layers of the battery device 20 arranged in layers is more than or equal to 7 layers, which can reduce the use cost of the energy storage device 100 while increasing the volumetric energy density of the energy storage device 100. In addition, the energy storage device 100 can constitute a complete system to provide or store electric energy, and when it is necessary to supplement the energy storage device 100, the new energy storage device 100 can be directly stacked on the original energy storage device 100, without additional infrastructure and land costs, thereby further improving the use convenience of the energy storage device 100 and reducing the use cost of the energy storage device 100.

[0135] In some embodiments, the standard container is a 20-foot standard container, and the height of the standard container is 2896 mm, 2591 mm or 2438 mm.

[0136] In some embodiments, referring to Figures 4-5 The energy storage device 100 further comprises a connecting mechanism 500 configured to connect the bin bodies 10 of two adjacent energy storage devices 100.

[0137] In this way, the problem of system deviation caused by earthquakes and hurricanes during the operation of the power station can be improved, thereby improving the reliability.

[0138] For example, the connecting mechanism can include an angle piece and a bolt. The stacking of the energy storage devices 100 can be more stable.

[0139] In some embodiments, the weight of the energy storage device 100 is M, and M is less than or equal to 36 tons.

[0140] In this way, the energy storage device 100 can be transported and hoisted individually. For example, it can meet the requirements of ports, land transportation and sea transportation worldwide.

[0141] Exemplarily, the weight of the energy storage device 100 can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 36 tons or any value between any two of them.

[0142] In the process of hoisting the energy storage device 100, the hoisting of the relevant hoisting device is facilitated, and the transfer work of the energy storage device 100 is facilitated.

[0143] In order to make the energy storage device 100 meet the requirements of some countries on the transportation limit, the overall weight of the energy storage device 100 is controlled to be less than or equal to 36 tons, and the integration of the energy storage device 100 is as high as possible, thereby reducing the workload of on-site installation; at the same time, the energy per unit area is improved, and the cost investment of the customer is reduced.

[0144] In some embodiments, referring to Figures 5-7 , 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.

[0145] 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 beneficial to match the existing standard container transportation tools and lifting tools, thereby reducing the transportation cost of the energy storage device 100, and thus reducing the use cost of the energy storage device 100.

[0146] In some embodiments, referring to Figures 5-7 , the control module 60 and the thermal management module 50 are all arranged outside the warehouse body 10, that is, the warehouse body 10 can be used for accommodating the battery device 20, and thus it is beneficial to improve the utilization rate of the space of the warehouse body 10, thereby improving the volume energy density. At the same time, the battery device 20 is decoupled from the supporting control module 60, the thermal management module 50 and other modules, and the maintenance is convenient.

[0147] In the related art, the lithium ion and other electrochemical energy storage system is composed of an energy module composed of a battery device and a supporting control module, a thermal management module and other modules, the service life of the battery device (about 20 years) and the service life of the supporting module (about 8 years) are not matched, the battery device is easy to replace, and there is a multi-dimensional interface intersection between the supporting module and the energy module, such as electromechanical and thermal, which leads to difficulty in replacing and adjusting the supporting module, and the maintenance cost of the whole life cycle increases. With the increase of the operation time of the energy storage system, the service life and the available power of the battery device are irreversibly attenuated, and a place needs to be reserved for subsequent supplement. At the same time, with the improvement of the volume utilization rate of the energy storage system product, the transportation of the energy storage system product is difficult due to its excessive weight.

[0148] By setting the control module 60 and the thermal management module 50 all outside the bin body 10, the battery device 20 and the matching modules such as the control module 60 and the thermal management module 50 are configured flexibly, and the energy storage system 2000 is supplemented conveniently. At the same time, the battery device 20 and the matching modules such as the control module 60 and the thermal management module 50 are decoupled, and maintenance is convenient.

[0149] In some embodiments, the inside of the bin body 10 has a first containing cavity and a second containing cavity, the first containing cavity is used to contain a plurality of battery devices 20, and at least part of the thermal management module 50 and / or at least part of the control module 60 are contained in the second containing cavity.

[0150] Here, at least part of the control module 60 and / or at least part of the thermal management module 50 contained in the second containing cavity means that at least part of the control module 60 can be contained in the second containing cavity, at least part of the thermal management module 50 can be contained in the second containing cavity, or at least part of the control module 60 and at least part of the thermal management module 50 can be contained in the second containing cavity.

[0151] For example, part of the control module 60 and / or part of the thermal management module 50 can be contained in the second containing cavity in the bin body 10, and the other part of the control module 60 and / or the other part of the thermal management module 50 can be arranged outside the bin body 10; or all of the control module 60 and / or all of the thermal management module 50 can be contained in the second containing cavity in the bin body 10.

[0152] In this embodiment, by arranging the inside of at least part of the bin body 10 with a first containing cavity and a second containing cavity, and arranging at least part of the control module 60 and / or at least part of the thermal management module 50 in the bin body 10, the space in the bin body 10 can be fully utilized, and the space utilization of the bin body 10 is further improved.

[0153] In some embodiments, at least part of the second containing cavity is arranged along the length direction of the bin body 10 with the first containing cavity.

[0154] Here, by arranging the second containing cavity at the end of the bin body 10, the space utilization inside the bin body 10 is maximized, and in addition, the second containing cavity can be arranged closer to the first containing cavity, which is beneficial to improve the compactness of the structure.

[0155] In some embodiments, referring to Figure 7 , at least part of the second containing cavity is arranged along the height direction of the bin body 10 with the first containing cavity.

[0156] Here, part of the second containing cavity can be arranged along the height direction of the bin body 10 with the first containing cavity, or all of the second containing cavity can be arranged along the height direction of the bin body 10 with the first containing cavity.

[0157] As an example, the second accommodating cavity is arranged above the first accommodating cavity, so that the components in the control bin can shield the top heat radiation to reduce the influence of the heat radiation on the inside of the first accommodating cavity.

[0158] In some embodiments, referring to Figures 7-8 The control module 60 includes a master control module 61 arranged in the second accommodating cavity above or below the first accommodating cavity, and the master control module 61 is used to control the input and output of high-voltage electric energy of the battery device 20.

[0159] By arranging the master control module 61 in the second accommodating cavity above or below the first accommodating cavity, the connection between the master control module 61 and the battery device 20 is facilitated.

[0160] In some embodiments, referring to Figure 8 The control module 60 includes at least one of the master control module 61, a power distribution module 62, a general control module 63, and a fire control module 64.

[0161] The battery device 20 and the master control module 61 are electrically connected. The master control module 61 and the general control module 63 are electrically connected. The master control module 61, the general control module 63, and the fire control module 64 are electrically connected with the power distribution module 62.

[0162] The master control module 61 is used to control the input and output of high-voltage electric energy of the battery device 20 in the bin body 10. The general control module 63 is used to control the on-off action of the master control module 61 in the bin body 10.

[0163] The fire control module 64 is used to control the action of the fire-fighting element when the temperature imbalance of the bin body 10 causes a fire. The fire-fighting element can be a fire extinguisher, etc., which can be arranged in the bin body 10.

[0164] The power distribution module 62 is used to electrically connect the master control module 61, the general control module 63, and the fire control module 64, so as to maintain the normal operation of the master control module 61, the general control module 63, and the fire control module 64 by turning on the circuits of the master control module 61, the general control module 63, and the fire control module 64.

[0165] 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.

[0166] In some embodiments, the thermal management module 50 includes a heat dissipation fan arranged outside the bin body 10. For example, the thermal management module 50 includes a heat dissipation fan and a heat exchanger arranged outside the bin body 10.

[0167] In this way, the heat dissipation fan, the heat dissipation fan and the heat exchanger are facilitated to exchange heat with the outside, thereby improving the heat exchange efficiency.

[0168] In some embodiments, referring to Figures 5-7 The energy storage device 100 comprises an accessory compartment 40, which is arranged on one side of the length direction of the compartment body 10, and at least part of the thermal management module 50 and / or at least part of the control module 60 are accommodated in the accessory compartment 40.

[0169] Here, at least part of the control module 60 and / or at least part of the thermal management module 50 accommodated in the accessory compartment 40 means that at least part of the control module 60 can be accommodated in the accessory compartment 40, at least part of the thermal management module 50 can be accommodated in the accessory compartment 40, or at least part of the control module 60 and at least part of the thermal management module 50 can be accommodated in the accessory compartment 40.

[0170] For example, part of the control module 60 and / or part of the thermal management module 50 can be accommodated in the accessory compartment 40, and the other part of the control module 60 and / or the other part of the thermal management module 50 can be arranged in the compartment body 10; or all of the control module 60 and / or all of the thermal management module 50 can be accommodated in the accessory compartment 40.

[0171] For example, the accessory compartment 40 can be hung on one side of the length direction of the compartment body 10 in the form of a backpack, or can be fixed on one side of the length direction of the compartment body 10 in the form of a cabinet or a container. In this way, the battery device 20 and the matching control module 60, thermal management module 50 and other modules can be separated, and the maintenance cost of the entire life cycle of the energy storage device 100 can be reduced.

[0172] By arranging the control module 60 and the thermal management module 50 in the accessory compartment 40 outside the compartment body 10, the battery device 20 and the matching control module 60, thermal management module 50 and other modules are configured flexibly, and the energy storage system 2000 is supplemented conveniently. At the same time, the battery device 20 and the matching control module 60, thermal management module 50 and other modules are decoupled, and maintenance is convenient, so that the control module 60, thermal management module 50 and other modules can be repaired and replaced individually, further reducing the use cost.

[0173] In addition, by arranging the accessory compartment 40 on one side of the length direction of the compartment body 10, the energy storage device 100 is facilitated to be stacked or supplemented.

[0174] In some embodiments, referring to Figures 5-7 The size of the compartment body 10 along the height direction is consistent with the size of the accessory compartment 40 along the height direction, and the size of the compartment body 10 along the width direction is consistent with the size of the accessory compartment 40 along the width direction.

[0175] In this way, the connection between the compartment body 10 and the accessory compartment 40 is facilitated, the appearance of the energy storage device 100 is improved, and the compactness of the structure of the energy storage device 100 is also improved.

[0176] Exemplarily, the heat management module 50 and the control module 60 are arranged along the front-rear direction of the accessory compartment 40, for example, the heat management module 50 is arranged at the front side of the control module 60.

[0177] In some embodiments, referring to Figures 5-7 The top wall and / or the side wall of the accessory compartment 40 is provided with a ventilation opening 41 for ventilation of the heat management module 50.

[0178] Exemplarily, the ventilation opening 41 includes an air inlet 411 and an air outlet 412.

[0179] Here, the ventilation opening 41 can be provided in the region of the accessory compartment 40 corresponding to the heat management module 50.

[0180] It can be an entire opening of the top wall of the accessory compartment 40 to form one ventilation opening 41. It can also be a partial opening of the top wall of the accessory compartment 40 to form one ventilation opening 41. It can also be a side wall of the accessory compartment 40 away from the compartment body 10 to form a ventilation opening 41. It can also be a side wall of the accessory compartment 40 along the width direction to form a ventilation opening 41.

[0181] As an example, the ventilation opening 41 of the top wall of the accessory compartment 40 can be used as the air outlet 412 or the air inlet 411. The ventilation opening 41 of the side wall of the accessory compartment 40 away from the compartment body 10 can be used as the air outlet 412 or the air inlet 411. The ventilation opening 41 of the side wall of the accessory compartment 40 along the width direction can be used as the air outlet 412 or the air inlet 411.

[0182] In this embodiment, by providing the ventilation opening 41, it is beneficial for heat dissipation of the heat management module 50, so that the heat management module 50 can have more heat dissipation channels, and the temperature control effect of the heat management module 50 is improved.

[0183] Exemplarily, the heat management module 50 includes a cooling circulation loop and a refrigerant circulation loop, the heat management components constitute part of the cooling circulation loop, and the condenser constitutes part of the refrigerant circulation loop. The heat management module 50 is independent of the energy unit 22, reducing the risk of mutual interference between the heat management module 50 and the energy unit 22.

[0184] The cooling liquid can circulate in the cooling liquid circulation loop, and the cooling liquid can circulate through the heat management components to exchange heat with the energy unit 22 to cool the energy unit 22. The cooling liquid after exchanging heat with the energy unit 22 can also circulate through the evaporator and exchange heat with the evaporator to exchange the heat from the energy unit 22 to the evaporator, so that the cooling liquid is cooled.

[0185] The condenser is a component for exchanging heat with the refrigerant flowing therethrough.

[0186] The evaporator is arranged in 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 flowing the cooling liquid therein. The refrigerant flow channel participates in forming the refrigerant circulation loop and is used for flowing the refrigerant therein. The cooling liquid flow channel and the refrigerant flow channel are not communicated with each other, so that the cooling liquid and the refrigerant are not mixed. 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.

[0187] Exemplarily, the fan is used for dissipating heat of the condenser.

[0188] As an example, the thermal management component can be plate-shaped or tubular, and the like, and is internally provided with a flow channel, which can be used for flowing a fluid to heat or cool the energy unit 22. The fluid can be a refrigerant or a cooling liquid.

[0189] When the battery device 20 is a battery module, the thermal management component can be a bottom plate, a top plate or a side plate of the battery module, and can be located between adjacent energy units 22.

[0190] The energy storage device 100 of the embodiment of the present application can be used as a minimum use unit and can be arranged in an upward stacking manner, thereby improving the generalization, modularization and standardization of the energy storage device 100, so as to facilitate cost reduction, and the number of the energy storage device 100 can be designed according to the thermal management requirement.

[0191] In order to facilitate rapid installation of customers on site, the control module 60 and the thermal management module 50 are integrated in the accessory warehouse 40, and the warehouse body 10 and the accessory warehouse 40 can be connected through high pressure, low pressure and pipeline.

[0192] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. An energy storage device, characterized by, The energy storage device comprises: a warehouse body, a size of the warehouse body in a height direction thereof is less than or equal to a size of a standard container in a height direction thereof; a plurality of battery devices, the battery devices comprise a box body and a plurality of energy units, the plurality of energy units are contained in the box body, the plurality of battery devices are arranged in layers in the height direction of the warehouse body, and a number of layers of the arranged layers is greater than or equal to 7 layers; a control module, the control module is used for electrically controlling the plurality of battery devices; a thermal management module, the thermal management module is used for managing temperatures of the plurality of energy units of the energy storage device; an inside of the warehouse body has a first containing cavity and a second containing cavity, at least part of the second containing cavity is arranged with the first containing cavity in the height direction of the warehouse body, the first containing cavity is used for containing the plurality of battery devices, at least part of the thermal management module and / or at least part of the control module are contained in the second containing cavity, the control module comprises a master control module, the master control module is arranged in the second containing cavity above or below the first containing cavity, and the master control module is used for controlling input and output of high-voltage electric energy of the battery devices.

2. The energy storage device of claim 1, wherein, At least part of the second containing cavity is arranged with the first containing cavity in a length direction of the warehouse body.

3. The energy storage device of claim 1, wherein, The energy storage device comprises a spare warehouse, the spare warehouse is arranged on one side of the warehouse body in the length direction, and at least part of the thermal management module and / or at least part of the control module are contained in the spare warehouse.

4. The energy storage device according to claim 3, wherein a size of the warehouse body in the height direction thereof is consistent with a size of the spare warehouse in the height direction thereof, and a size of the warehouse body in a width direction thereof is consistent with a size of the spare warehouse in the width direction thereof.

5. The energy storage device of claim 3, wherein, A top wall and / or a side wall of the spare warehouse are provided with ventilation openings, and the ventilation openings are used for ventilation of the thermal management module.

6. The energy storage device of claim 1, wherein, The control module comprises at least one of a master control module, a power distribution module, a general control module and a fire control module.

7. The energy storage device of any one of claims 1-6, wherein, A size of the warehouse body in the height direction thereof is greater than or equal to one-half of a size of a standard container in the height direction thereof.

8. The energy storage device of claim 7, wherein, The standard container is a 20-foot standard container, and a height of the standard container is 2896 mm, 2591 mm or 2438 mm.

9. The energy storage device of any one of claims 1-6, wherein, A weight of the energy storage device is M, and M is less than or equal to 36 tons.

10. An energy storage system characterized by, A plurality of energy storage devices as claimed in any one of claims 1-9 are included, and at least part of the energy storage devices are arranged in layers in a height direction of the energy storage devices.

11. An energy storage system characterized by, A power conversion device and at least one energy storage device as claimed in any one of claims 1-9 are included, and the power conversion device is used for electrically connecting a power generation device and the energy storage device.

12. A charging network characterized in that, A charging pile and an energy storage device as claimed in any one of claims 1-9 or an energy storage system as claimed in any one of claims 10-11 are included, and the energy storage device is used for providing electric energy for the charging pile.

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