Energy storage apparatus, battery device, and energy storage system

Abstract

An energy storage apparatus, a battery device, and an energy storage system, relating to the field of energy storage. The battery device comprises a first roller wheel and a second roller wheel fixed to one side of the battery device along a first direction. The energy storage apparatus comprises a plurality of battery device mounting positions arranged along the gravity direction; each battery device mounting position comprises two guide rails and two side walls disposed opposite to one another along a second direction, wherein the two guide rails are used for bearing a battery device, and the two guide rails are provided at the same height on the two side walls, respectively; each guide rail is provided with a first accommodating portion and a second accommodating portion along the first direction, and the first accommodating portions and the second accommodating portions extend from the sides of the two guide rails facing the battery device in a direction away from the battery device; and the distance between the first accommodating portion and the second accommodating portion matches the distance between the first roller wheel and the second roller wheel, thereby improving the performance of the energy storage apparatus.

Description

An energy storage device, a battery device, and an energy storage system Cross-references to related applications

[0001] This application claims priority to Chinese patent application 202422894140.X, filed on November 26, 2024, entitled “Energy Storage Device, Battery Device and Energy Storage System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage, and more specifically, to an energy storage device, a battery device, and an energy storage system. Background Technology

[0003] With the increasing demand for new energy technologies, the market for energy storage devices is also expanding. Currently used energy storage devices typically have casters installed at the bottom of the battery pack for easy installation. However, these casters occupy a certain amount of height space and cause wear and tear on the battery device's locking structure.

[0004] Therefore, improving the performance of energy storage devices has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides an energy storage device, a battery device, and an energy storage system that can improve the performance of the energy storage device.

[0006] In a first aspect, this application provides an energy storage device for accommodating a battery device. The battery device includes a first roller and a second roller, which are fixed to one side of the battery device along a first direction. The energy storage device includes a plurality of battery device mounting positions arranged along the direction of gravity. Each battery device mounting position includes two guide rails and two sidewalls disposed opposite each other along a second direction. The two guide rails are used to support the battery device and are respectively disposed at the same height on the two sidewalls. The first direction, the direction of gravity, and the second direction are perpendicular to each other. Each guide rail is provided with a first receiving portion and a second receiving portion along the first direction. The first receiving portion and the second receiving portion extend from the side of the two guide rails toward the battery device in a direction away from the battery device. The distance between the first receiving portion and the second receiving portion matches the distance between the first roller and the second roller so that the first roller is at least partially received in the first receiving portion and the second roller is at least partially received in the second receiving portion.

[0007] In this embodiment, the battery mounting position of the energy storage device is provided with a guide rail. The guide rail is provided with a first receiving part and a second receiving part and matches the position of the first roller and the second roller of the battery device. So that when the battery device is installed in the battery mounting position, the first roller and the second roller can sink down in the direction of gravity, thereby releasing the height space occupied by the rollers in the battery mounting position.

[0008] In some embodiments, along a first direction, the maximum size of the first receiving portion is greater than the maximum size of the second receiving portion, and the maximum size of the first roller is greater than the maximum size of the second roller; or along a second direction, the maximum size of the first receiving portion is greater than the maximum size of the second receiving portion, and the maximum size of the first roller is greater than the maximum size of the second roller.

[0009] In this embodiment, the width or diameter of the first roller and the second roller are gradient-distributed, and the corresponding dimensions of the first receiving part and the second receiving part are also gradient-distributed. When the battery device is installed on the guide rail, the limiting force it is subjected to is triangularly distributed, making it less likely for the battery device to slip and improving the installation stability of the battery device.

[0010] In some embodiments, the battery device mounting position further includes an inlet for the battery device to enter the battery device mounting position, the inlet intersecting with two side walls, the first direction being the direction in which the inlet faces, and along the first direction or the second direction, the maximum size of the second receiving portion is smaller than the maximum size of the first roller.

[0011] In this embodiment, when the first direction is the direction of the entrance, the roller closer to the entrance is smaller, and the receiving part closer to the entrance is also smaller. Furthermore, along the first or second direction, the maximum size of the second receiving part is smaller than the maximum size of the first roller. This ensures that during the process of pushing the battery device into the battery device mounting position, the size of the roller is larger than the size of the receiving part it passes through. This prevents the roller from sinking into the receiving part near the entrance when entering the matching receiving part, making the battery device insertion process more convenient and improving assembly efficiency.

[0012] In some embodiments, the first receiving portion and the second receiving portion are disposed along a first direction on the side closest to the sidewall.

[0013] In this embodiment, the first receiving part and the second receiving part are arranged along the first direction on the side closest to the sidewall, and the distance between the receiving parts along the second direction is larger, making the battery device more stable when placed on the guide rail.

[0014] In some embodiments, the first receiving portion includes a first opening, and the second receiving portion includes a second opening. The first opening extends through the guide rail along the thickness direction of the guide rail, and the second opening extends through the guide rail along the thickness direction of the guide rail. In the first direction, the maximum size of the first opening is smaller than the diameter of the first roller, and the maximum size of the second opening is smaller than the diameter of the second roller.

[0015] In this embodiment, the first receiving part is provided with a first opening, and the maximum size of the first opening is smaller than the diameter of the first roller. The first roller will not be completely inserted into the first opening. When the battery device is removed, the supporting force generated by the edge of the first opening on the roller has a component in the direction of gravity. Therefore, the battery device can be removed simply by pulling it outward, which is convenient.

[0016] In some embodiments, the first receiving portion includes a third opening, a transition portion, and a first region. The third opening is disposed on the side of the guide rail closer to the battery device along the thickness direction, and the first region is disposed on the side of the guide rail away from the battery device along the thickness direction. The transition portion connects the third opening and the first region. In the first direction, the maximum size of the first region is smaller than the maximum size of the third opening.

[0017] In this embodiment, along the first direction, the maximum size of the first region is smaller than the maximum size of the third opening. In this case, the transition portion connecting the first region and the third opening has a certain slope, which provides a buffer when the battery device slides into the first receiving portion and provides a gentle slope when the battery device is pushed out of the first receiving portion, thereby making the assembly and removal of the battery device more convenient and efficient.

[0018] In some embodiments, the first region includes a fourth opening along a first direction, wherein the maximum size of the third opening is greater than or equal to the maximum size of the first roller, and the maximum size of the fourth opening is less than the maximum size of the first roller.

[0019] In this embodiment, the maximum size of the third opening is greater than or equal to the maximum size of the first roller. The maximum size of the first roller can enter the first receiving part through the third opening, thereby enabling the first receiving part to accommodate the first roller as much as possible and saving height space to the greatest extent. The maximum size of the fourth opening is less than the maximum size of the first roller. The maximum size of the first roller cannot pass through the fourth opening, and the first roller can still be at least partially inside the first receiving part, thereby facilitating the ejection of the battery device.

[0020] In some embodiments, along the second direction, the maximum size of the fourth opening is smaller than the maximum size of the third opening.

[0021] In this embodiment, the maximum size of the fourth opening is smaller than the maximum size of the third opening along the second direction. In this case, the transition portion also has a slope in the second direction Y, which facilitates the positioning of the first roller. When the battery device is pushed into the battery device mounting position, even if there is a certain deviation between the position of the first roller and the first receiving portion, the slope of the transition portion can guide the first roller to slide into the first receiving portion, so as to easily install the battery device and improve the installation efficiency.

[0022] In some embodiments, the first region includes a bottom wall, and along a first direction, the maximum size of the bottom wall is greater than or equal to the maximum size of the first roller.

[0023] In this embodiment, a bottom wall is provided at the bottom of the first receiving part to support the first roller. When the battery device is inserted, it can provide good support for the battery device. When the battery device is removed, the battery device can be easily removed without being supported from the side away from the guide rail.

[0024] In some embodiments, the transition portion includes an arcuate transition region, which is disposed opposite to each other on both sides of the first region along a first direction, and the portion of the arcuate transition region closer to the battery device has a larger slope.

[0025] In this embodiment, by providing arc surfaces on both sides of the first region along the first direction, the assembly and disassembly of the battery device becomes easier, enabling convenient installation and replacement processes and improving production efficiency.

[0026] In a second aspect, a battery device is provided, which is disposed in an energy storage device. The battery device includes a first roller and a second roller, which are fixed to one side of the battery device along a first direction. The energy storage device includes: a plurality of battery device mounting positions arranged along the direction of gravity; each battery device mounting position includes two guide rails and two sidewalls disposed opposite to each other along a second direction. The two guide rails are used to support the battery device and are respectively disposed at the same height on the two sidewalls. The first direction, the direction of gravity, and the second direction are perpendicular to each other. Each guide rail is provided with a first receiving portion and a second receiving portion along the first direction. The first receiving portion and the second receiving portion extend from the side of the two guide rails toward the battery device in a direction away from the battery device. The distance between the first receiving portion and the second receiving portion matches the distance between the first roller and the second roller so that the first roller is at least partially received in the first receiving portion and the second roller is at least partially received in the second receiving portion.

[0027] In some embodiments, the diameter of the first roller is greater than the diameter of the second roller, or the width of the first roller is greater than the width of the second roller.

[0028] Thirdly, an energy storage system is provided, comprising: an energy storage device according to the first aspect or any embodiment of the first aspect, and a battery device according to the second aspect or any embodiment of the second aspect. Attached Figure Description

[0029] Figure 1 shows a schematic diagram of the external body of an energy storage device disclosed in an embodiment of this application;

[0030] Figure 2 shows a schematic diagram of the internal structure of an energy storage device disclosed in an embodiment of this application;

[0031] Figure 3 shows a perspective view of a battery device provided in an embodiment of this application;

[0032] Figure 4 shows a side view and a bottom view of a battery device provided in an embodiment of this application;

[0033] Figure 5 shows a schematic diagram of the guide rail in an energy storage device provided in an embodiment of this application;

[0034] Figure 6 shows a schematic diagram of a battery device being pushed into a guide rail according to an embodiment of this application;

[0035] Figure 7 shows a schematic diagram of a battery device provided in an embodiment of this application disposed on a guide rail;

[0036] Figure 8 shows a bottom view of a battery device and a top view of a guide rail in an energy storage device according to an embodiment of this application;

[0037] Figure 9 shows a schematic diagram of the guide rail in an energy storage device provided in an embodiment of this application;

[0038] Figure 10 shows a schematic diagram of the guide rail in an energy storage device according to an embodiment of this application;

[0039] Figure 11 shows a schematic diagram of the guide rail in an energy storage device according to an embodiment of this application;

[0040] Figure 12 shows a schematic diagram of the guide rail in an energy storage device provided in an embodiment of this application.

[0041] Figure label:

[0042] 1-Energy storage device; 10-Battery compartment; 20-Main control module; 30-Thermal management module; 40-Electrical module; 50-Busher module; 60-Top wall; 11-Side wall; 12-Guide rail; 13-Entrance; 100-Battery device; 200-Battery device mounting position; 101-First roller; 102-Second roller; 121-First receiving section; 122-Second receiving section; 1211-First opening; 1221-Second opening; 1212-Third opening; 1213-First area; 1214-Transition section; 126-Arc-shaped transition area;

[0043] The accompanying drawings are not drawn to scale. Detailed Implementation

[0044] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0047] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0051] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0052] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0053] This application provides an energy storage device that may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0054] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0055] In some embodiments, the energy storage device is an energy storage unit or an energy storage cabinet.

[0056] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0057] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0058] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes auxiliary battery management units, integrated switches, and other modules.

[0059] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an insulation monitoring module, a main battery management unit, and an Ethernet and fiber optic conversion module.

[0060] As an example, a fire protection system includes control panels, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage systems.

[0061] As an example, the power distribution unit can be used to distribute power to the power modules of the energy storage device.

[0062] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0063] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0064] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0065] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0066] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0067] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0068] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0069] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0070] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0071] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0072] With the increasing demand for new energy technologies, the market for energy storage devices is also expanding. Currently used energy storage devices typically have casters installed at the bottom of the battery pack for easy installation. However, these casters occupy a certain amount of height space and cause wear and tear on the battery device's locking structure.

[0073] Therefore, improving the performance of energy storage devices has become an urgent problem to be solved.

[0074] This application provides an energy storage device, a battery device, and an energy storage system. The energy storage device is used to house the battery device, which includes a first roller and a second roller. The first roller and the second roller are fixed to one side of the battery device along a first direction. The energy storage device includes: a plurality of battery device mounting positions arranged along the gravity direction; each battery device mounting position includes two guide rails and two sidewalls arranged opposite each other along a second direction. The two guide rails are used to support the battery device and are respectively arranged at the same height on the two sidewalls. The first direction, the gravity direction, and the second direction are perpendicular to each other. Each guide rail is provided with a first receiving portion and a second receiving portion along the first direction. The first receiving portion and the second receiving portion extend from the side of the two guide rails toward the battery device in a direction away from the battery device. The distance between the first receiving portion and the second receiving portion matches the distance between the first roller and the second roller so that the first roller is at least partially received in the first receiving portion and the second roller is at least partially received in the second receiving portion.

[0075] In the embodiments provided in this application, a guide rail is provided at the battery mounting position of the energy storage device. The guide rail is provided with a first receiving part and a second receiving part and matches the position of the first roller and the second roller of the battery device. So that when the battery device is installed at the battery mounting position, the first roller and the second roller can sink down along the direction of gravity, thereby releasing the height space occupied by the rollers at the battery mounting position.

[0076] For ease of explanation, the following embodiments, in conjunction with Figures 1 and 2, exemplarily illustrate the scenarios to which the embodiments of this application are applicable.

[0077] For example, Figure 1 shows a schematic diagram of the external body of an energy storage device disclosed in an embodiment of this application; Figure 2 shows a schematic diagram of the internal body of an energy storage device disclosed in an embodiment of this application.

[0078] The energy storage device 1 provided in this application embodiment may include multiple battery compartments 10, which can accommodate multiple battery devices. For example, each battery compartment 10 may have multiple battery device mounting positions 200 arranged along the direction of gravity to accommodate multiple battery devices. Battery devices can be inserted into or removed from the battery device mounting positions 200 of the battery compartment 10 from the inlet 13 along the first direction X. After the battery device is installed in the mounting position, it can be fixed by a locking mechanism. Each battery device mounting position 200 may include two guide rails 12 and two side walls 11 arranged opposite each other along the second direction Y. The two guide rails 12 are used to support the battery devices, and are respectively arranged at the same height on the two side walls. Adjacent battery compartments 10 may share the same side wall 11.

[0079] The energy storage device 1 is provided with multiple battery compartments 10, and the multiple battery compartments 10 can be provided with a common side wall 11 to form multiple battery compartments 10, so that the battery device can be installed in the energy storage device 1. Apart from the box structure of the energy storage device 1, no additional cabinet is required.

[0080] For example, the energy storage device 1 can be rectangular, but this embodiment is not limited to this and the energy storage device 1 can also be other shapes. In addition, in order to facilitate transportation and reduce transportation costs, the energy storage device 1 in this embodiment can be a standard-sized container, for example, a 20-foot or 40-foot container, but this embodiment is not limited to this.

[0081] The energy storage device 1 may also include a main control module 20. As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module 20 can house a main control box, which is used to electrically connect to the battery devices within the battery compartment 10. The main control module 20 can monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes auxiliary battery management units, integrated switches, and other modules.

[0082] The energy storage device 1 may also include a thermal management module 30, which can house thermal management components to perform thermal management on the energy storage device 1. For example, heating or cooling the energy storage device 1. As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery unit via piping for regulating the temperature of the individual battery cells.

[0083] The energy storage device 1 may also include an electrical module 40, which may include electrical components, such as at least one of the following: a distribution box, an inverter, a main control box, a fire control box, and a fan.

[0084] The energy storage device 1 may also include a combiner module 50, which may include a combiner component for electrical connection with the main control module 20. For example, the high-voltage line from the main control module 20 can be connected to the combiner component through a cable tray at the bottom of the enclosure, and the combiner component can enable parallel connection between multiple main control boxes.

[0085] The energy storage device 1 may also be provided with a top wall 60, which is positioned above along the direction of gravity, thereby providing a certain degree of protection for the entire energy storage device 1.

[0086] The above are merely examples. The energy storage device 1 may include more components than those in the examples above, or some components in the examples above may be omitted. This application embodiment does not limit this.

[0087] Please refer to Figures 3 and 4 together. Figure 3 shows a perspective view of a battery device provided in an embodiment of this application, and Figure 4 shows a side view and a bottom view of a battery device provided in an embodiment of this application.

[0088] As shown in Figures 3 and 4, where Figure 4(a) is a side view of a battery device 100 provided in an embodiment of this application, and Figure 4(b) is a bottom view of a battery device 100 provided in an embodiment of this application. In some possible embodiments, the battery device 100 may include a first roller 101 and a second roller 102, the first roller 101 and the second roller 102 being fixed to one side of the battery device 100 along a first direction X.

[0089] This application embodiment uses a first roller 101 as an example and a second roller 102 as an example for illustration. However, this application embodiment does not limit the number of rollers in the battery device 100. The battery device 100 can have more rollers, such as three, four, five or more. More rollers may provide better stability.

[0090] This application uses a disc-shaped roller as an example, but the structure of the roller involved in this application is not limited. For example, in some possible embodiments, the roller may be a sheet, a cylinder, or multiple coaxial rings.

[0091] This application embodiment exemplarily illustrates two rows of rollers, but this application embodiment does not limit the number of rows of rollers. The number of rows of rollers can be two or more, and multiple rows of rollers can be arranged along the second direction Y.

[0092] This application embodiment exemplarily shows that the first roller 101 and the second roller 102 are mounted on the bottom of the battery device 100 by a bracket, but this application embodiment is not limited thereto. The first roller 101 and the second roller 102 can also be mounted on the battery device 100 in other ways. For example, a groove can be provided at the bottom of the battery device 100, and the first roller 101 and the second roller 102 can be mounted on the side wall of the groove by a fixed shaft.

[0093] In some embodiments, the energy storage device 1 may include a plurality of battery device mounting positions 200, which may be arranged along the direction of gravity. Each battery device mounting position 200 may be used to accommodate a battery device 100, which can be referred to in the above embodiments, and the embodiments of this application will not be described in detail here.

[0094] The battery mounting position 200 may include two guide rails 12 and two side walls 11 arranged opposite each other along a second direction. The two guide rails 12 can be used to support the battery device 100. The two guide rails 12 are respectively arranged at the same height on the two side walls 11. The first direction X, the gravity direction Z, and the second direction Y are perpendicular to each other.

[0095] The figure provides an illustrative illustration of possible directions X, Y, and Z, but these directions can also be other directions, and the embodiments of this application are not limited thereto.

[0096] The design of the guide rail in an energy storage device provided in an embodiment of this application is described below with reference to Figures 5 to 7.

[0097] Figure 5 shows a schematic diagram of the guide rail in an energy storage device according to an embodiment of this application; Figure 6 shows a schematic diagram of the battery device being pushed into the guide rail according to an embodiment of this application; and Figure 7 shows a schematic diagram of the battery device being disposed on the guide rail according to an embodiment of this application.

[0098] As shown in Figure 5, Figure 5(a) shows a perspective view of the guide rail 12, and Figure 5(b) shows a top view of the guide rail 12. In some possible embodiments, each guide rail 12 is provided with a first receiving portion 121 and a second receiving portion 122 along a first direction X. The first receiving portion 121 and the second receiving portion 122 extend from the side of the two guide rails 12 toward the battery device 100 in a direction away from the battery device 100. The distance between the first receiving portion 121 and the second receiving portion 122 matches the distance between the first roller 101 and the second roller 102 so that the first roller 101 is at least partially received in the first receiving portion 121, and the second roller 102 is at least partially received in the second receiving portion 122.

[0099] The first receiving portion 121 and the second receiving portion 122 can partially receive the first roller 101 and the second roller 102. For example, the battery device 100 is disposed on the guide rail 12 as shown in FIG7. FIG7(a) shows a perspective view of the battery device 100 disposed on the guide rail 12, FIG7(b) shows a front view of the battery device 100 disposed on the guide rail 12, and FIG7(c) shows a side view of the battery device 100 disposed on the guide rail 12. The first roller 101 and the second roller 102 of the battery device 100 are partially received in the first receiving portion 121 and the second receiving portion 122, partially remain outside the side of the guide rail 12 facing the battery device 100, and the other part passes through the first receiving portion 121 and the second receiving portion 122 and is located on the side of the guide rail 12 away from the battery device 100.

[0100] The first receiving portion 121 and the second receiving portion 122 can also completely receive the first roller 101 and the second roller 102. For example, when the first receiving portion 121 and the second receiving portion 122 are groove structures, the opening of the groove structure is larger than the size of the horizontal cross section of the first roller 101 and the second roller 102, and the groove is deep, the first roller 101 and the second roller 102 can be completely accommodated in the groove structure, thereby saving more height space.

[0101] The distance between the first receiving part 121 and the second receiving part 122 or the distance between the first roller 101 and the second roller 102 can refer to the distance between their geometric centers, the minimum distance between them, or other calculation methods. This application does not limit this. As long as the design of aligning the first receiving part 121 with the first roller 101 and the second receiving part 122 with the second roller during installation meets the design requirements of the embodiments of this application.

[0102] Matching the distance between the first receiving part 121 and the second receiving part 122 with the distance between the first roller 101 and the second roller 102 can mean that the distance between the first receiving part 121 and the second receiving part 122 is equal to or differs from the distance between the first roller 101 and the second roller 102 by a certain distance. This distance can be an installation tolerance, or it can be a distance generated by beveling or chamfering the first receiving part 121 and the second receiving part 122 to facilitate assembly.

[0103] In this embodiment, the battery mounting position 200 of the energy storage device 1 is provided with a guide rail 12. The guide rail 12 is provided with a first receiving part 121 and a second receiving part 122 and is matched with the positions of the first roller 101 and the second roller 102 of the battery device 100. So when the battery device 100 is installed in the battery mounting position 200, the first roller 101 and the second roller 102 can sink down along the direction of gravity, so that the height space occupied by the rollers in the battery mounting position 200 can be released.

[0104] Furthermore, the first receiving section 121 and the second receiving section 122 respectively receiving the first roller 101 and the second roller 102 can restrict the movement of the battery device 100 along the first direction and reduce damage to the locking mechanism.

[0105] Figure 8 shows a bottom view of a battery device and a top view of a guide rail in an energy storage device according to an embodiment of the present application. In Figure 8(a), the bottom view of the battery device according to an embodiment of the present application is shown, and in Figure 8(b), the top view of the guide rail in an energy storage device according to an embodiment of the present application is shown.

[0106] As shown in Figure 8, in some possible embodiments, along the second direction Y, the maximum size of the first receiving portion 121 is greater than the maximum size of the second receiving portion 122, and the maximum size of the first roller 101 is greater than the maximum size of the second roller 102.

[0107] The dimensions of the first roller 101 and the second roller 102 along the second direction Y are the widths of the first roller 101 and the second roller 102. For ease of explanation, the dimensions of the first receiving portion 121 and the second receiving portion 122 along the second direction Y are also referred to as the widths of the first receiving portion 121 and the second receiving portion 122.

[0108] The widths of the first roller 101 and the second roller 102 are gradient-distributed, and the widths of the first receiving portion 121 and the second receiving portion 122 are also gradient-distributed. When the battery device 100 is installed on the guide rail 12, the limiting force it is subjected to is triangularly distributed, making it less likely for the battery device 100 to slip and improving the installation stability of the battery device 100.

[0109] In some possible embodiments, along the first direction X, the maximum size of the first receiving portion 121 is greater than the maximum size of the second receiving portion 122, and the maximum size of the first roller 101 is greater than the maximum size of the second roller 102.

[0110] The dimensions of the first roller 101 and the second roller 102 along the first direction Y are the diameters of the first roller 101 and the second roller 102.

[0111] The diameters of the first roller 101 and the second roller 102 are gradient-distributed, and the corresponding dimensions of the first receiving portion 121 and the second receiving portion 122 are also gradient-distributed. When the battery device 100 is installed on the guide rail 12, the limiting force it is subjected to is triangularly distributed, making it less likely for the battery device 100 to slip and improving the installation stability of the battery device 100.

[0112] Furthermore, the battery device mounting position 200 also includes an inlet 13, which is used for the battery device 100 to enter the battery device mounting position 200. The inlet 13 intersects with two side walls 11. The first direction X is the direction in which the inlet 13 faces. Along the first direction X or the second direction Y, the maximum size of the second receiving part 122 is smaller than the maximum size of the first roller 101.

[0113] When the first direction X is the direction in which the inlet 13 faces, the rollers closer to the inlet 13 are smaller, and the receiving parts closer to the inlet 13 are also smaller. Furthermore, along the first direction X or the second direction Y, the maximum size of the second receiving part 122 is smaller than the maximum size of the first roller 101. This ensures that when the battery device 100 is pushed into the battery device mounting position 200, the size of the rollers is larger than the size of the receiving parts it passes through. This prevents the rollers from getting stuck in the receiving parts near the inlet 13 when entering the matching receiving parts, making the pushing process of the battery device 100 more convenient and improving assembly efficiency.

[0114] In some possible embodiments, the first receiving portion 121 and the second receiving portion 122 are disposed along the first direction X on the side of the sidewall 11.

[0115] In this embodiment, the first receiving part 121 and the second receiving part 122 are arranged along the first direction X on the side near the side wall 11, and the distance between the receiving parts along the second direction is larger, so that the battery device 100 is placed on the guide rail 12 more stably.

[0116] The structure of the first containment section 121 and the second containment section 122 will be described below with reference to Figures 9 to 12, taking the first containment section 121 as an example.

[0117] Figure 9 shows a schematic diagram of the guide rail 12 in the energy storage device 1 provided in an embodiment of this application; Figure 10 shows a schematic diagram of the guide rail 12 in the energy storage device 1 provided in an embodiment of this application; Figure 11 shows a schematic diagram of the guide rail 12 in the energy storage device 1 provided in an embodiment of this application; and Figure 12 shows a schematic diagram of the guide rail 12 in the energy storage device 1 provided in an embodiment of this application.

[0118] As shown in FIG9, in some possible embodiments, the first receiving portion 121 includes a first opening 1211 that extends through the guide rail 12 along its thickness direction. The maximum size of the first opening 1211 along the first direction X is smaller than the diameter of the first roller 101. Similarly, the second receiving portion 122 includes a second opening 1221 that extends through the guide rail 12 along its thickness direction. The maximum size of the second opening 1221 along the first direction X is smaller than the diameter of the second roller 102.

[0119] In this embodiment, the first receiving part 121 is provided with a first opening 1211, and the maximum size of the first opening 1211 is smaller than the diameter of the first roller 101. The first roller 101 will not be completely inserted into the first opening 1211. When the battery device 100 is removed, the supporting force generated by the edge of the first opening 1211 on the roller has a component in the direction of gravity. Therefore, the battery device can be removed simply by pulling the battery device 100 outward, which is convenient to operate.

[0120] As shown in FIG10, in some possible embodiments, the first receiving portion 121 includes a third opening 1212, a transition portion 1214, and a first region 1213. The third opening 1212 is disposed on the side of the guide rail 12 close to the battery device 100 along the thickness direction, and the first region 1213 is disposed on the side of the guide rail 12 away from the battery device along the thickness direction. The transition portion 1214 connects the third opening 1212 and the first region 1213. In this case, along the first direction X, the maximum size of the first region 1213 is smaller than the maximum size of the third opening 1212.

[0121] The transition section 1214 connects to the third opening 1212 and the first region 1213, which have different dimensions in the first direction. This creates a slope in the first direction, which can act as a buffer when the first roller of the battery device is inserted and removed.

[0122] The first region 1213 may have an opening. When the first region 1213 has an opening, the first receiving part 121 has better fixing performance for the battery device and can effectively reduce damage to the locking structure. Alternatively, a bottom wall may be provided in the first region 1213 to support the battery device, which allows the battery device to be removed with less force, making it more convenient to remove the battery device.

[0123] In this embodiment of the application, along the first direction X, the maximum size of the first region is smaller than the maximum size of the third opening 1212. In this case, the transition portion 1214 connecting the first region 1213 and the third opening 1212 has a certain slope, which provides a buffer when the battery device 100 slides into the first receiving portion 121 and provides a gentle slope when the battery device 100 is pushed out of the first receiving portion 121, thereby making the assembly and removal of the battery device 100 more convenient and efficient.

[0124] In some possible embodiments, the first region 1213 includes a fourth opening along the first direction X, the maximum size of the third opening 1212 is greater than or equal to the maximum size of the first roller 101, and the maximum size of the fourth opening is less than the maximum size of the first roller 101.

[0125] In this embodiment, the maximum size of the third opening 1212 is greater than or equal to the maximum size of the first roller 101. The maximum size of the first roller 101 can enter the first receiving portion 121 through the third opening 1212, thereby enabling the first receiving portion 121 to accommodate the first roller 101 as much as possible and saving height space to the greatest extent. The maximum size of the fourth opening is smaller than the maximum size of the first roller 101. The maximum size of the first roller 101 cannot pass through the fourth opening, and the first roller 101 can still be at least partially inside the first receiving portion 121, thereby facilitating the ejection of the battery device.

[0126] In some possible embodiments, as shown in FIG11, the maximum size of the fourth opening along the second direction Y is smaller than the maximum size of the third opening 1212.

[0127] The maximum dimension of the fourth opening along the second direction is smaller than the maximum dimension of the third opening 1212, meaning that the transition section can also have a slope in the second direction Y. This can improve the installation success rate when there is an installation deviation in the battery device 100. In particular, when the roller size is small or the size difference between the rollers is large, having a slope in the second direction Y can effectively improve the success rate of installation.

[0128] In this embodiment, along the second direction Y, the maximum size of the fourth opening is smaller than the maximum size of the third opening 1212. In this case, the transition portion also has a slope in the second direction Y, which facilitates the positioning of the first roller 101. When the battery device 100 is pushed into the battery device mounting position 200, even if there is a certain deviation between the position of the first roller 101 and the first receiving portion 121, the slope of the transition portion 1214 can guide the first roller 101 to slide into the first receiving portion 121, thereby achieving easy placement of the battery device 100 and improving installation efficiency.

[0129] In some possible embodiments, the first region 1213 includes a bottom wall along a first direction X, the maximum size of which is greater than or equal to the maximum size of the first roller 101.

[0130] In this embodiment, a bottom wall is provided at the bottom of the first receiving part 121 to support the first roller 101. When the battery device 100 is in place, it can provide good support for the battery device 100. When the battery device is removed, the battery device 100 can be easily removed without being supported from the side of the guide rail 12 away from the battery device 100.

[0131] In some possible embodiments, as shown in FIG12, the transition portion of the energy storage device 1 includes an arc-shaped transition region 126. The arc-shaped transition region 126 is disposed opposite to each other on both sides of the first region 1213 along the first direction X, and the portion of the arc-shaped transition region 126 closer to the battery device 100 has a larger slope.

[0132] The arc transition area 126 can be the section of the transition part 1214 of this part that is cut by the plane formed by the first direction X and the gravity direction Z and has an arc shape.

[0133] The greater slope of the arc transition area 126 near the battery device 100 means that the arc surface formed by the arc transition area 126 gradually becomes more vertical from the bottom to the top of the first receiving part 121, that is, the slope of the lower part becomes gentler.

[0134] In this embodiment of the application, by providing arc surfaces along the first direction X on both sides of the first region 1213, the assembly and disassembly of the battery device 100 becomes easier, enabling convenient installation and replacement processes and improving production efficiency.

[0135] According to certain embodiments of this application, the energy storage device 1 may be provided with a plurality of sidewalls 11 along the second direction Y, and a plurality of battery compartments 10 may be formed between the sidewalls 11. The plurality of battery compartments 10 may be arranged along the second direction Y, and the battery compartments 10 may share the sidewalls 11. Two guide rails 12 are provided on the sidewalls 11 at the same height, and the guide rails 12 may be used to support the battery device 100 to form a battery device mounting position 200. The battery device 100 includes a first roller 101 and a second roller 102. The first roller 101 and the second roller 102 are fixed to one side of the battery device 100 along a first direction X. Each guide rail 12 is provided with a first receiving portion 121 and a second receiving portion 122 along the first direction X. The first receiving portion 121 includes a third opening 1212, a transition portion 1214, and a fourth opening. The third opening 1212 is located on the side of the guide rail 12 along the thickness direction near the battery device 100, and the fourth opening is located on the side of the guide rail 12 along the thickness direction away from the battery device 100. The transition portion 1214 connects the third opening 1212 and the fourth opening. Along the first direction X, the maximum size of the fourth opening is smaller than the maximum size of the third opening 1212. The distance between the first receiving part 121 and the second receiving part 122 matches the distance between the first roller 101 and the second roller 102. Correspondingly, the relationship between the second receiving part 122 and the second roller 102 can also refer to the relationship between the first receiving part 121 and the first roller 101, so that when the first roller 101 and the second roller 102 are installed in the battery device mounting position 200, they can roll into place relatively smoothly along the slope. When the battery device 100 is removed, it can be pulled out along the slope, thus improving production efficiency.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, The energy storage device is used to house a battery device (100), the battery device (100) including a first roller (101) and a second roller (102), the first roller (101) and the second roller (102) being fixed to one side of the battery device (100) along a first direction, the energy storage device comprising: Includes multiple battery device mounting positions (200) arranged along the direction of gravity; The battery device mounting position (200) includes two guide rails (12) and two side walls (11) arranged opposite to each other along a second direction. The two guide rails (12) are used to support the battery device (100). The two guide rails (12) are respectively arranged at the same height on the two side walls (11). The first direction, the gravity direction and the second direction are perpendicular to each other. Each guide rail (12) is provided with a first receiving part (121) and a second receiving part (122) along the first direction. The first receiving part (121) and the second receiving part (122) extend from the side of the two guide rails (12) toward the battery device (100) in a direction away from the battery device (100). The distance between the first receiving portion (121) and the second receiving portion (122) is matched with the distance between the first roller (101) and the second roller (102) so that the first roller (101) is at least partially received in the first receiving portion (121) and the second roller (102) is at least partially received in the second receiving portion (122).

2. The energy storage device according to claim 1, characterized in that, Along the first direction, the maximum size of the first receiving part (121) is greater than the maximum size of the second receiving part (122), and the maximum size of the first roller (101) is greater than the maximum size of the second roller (102).

3. The energy storage device according to claim 1, characterized in that, Along the second direction, the maximum size of the first receiving portion (121) is greater than the maximum size of the second receiving portion (122), and the maximum size of the first roller (101) is greater than the maximum size of the second roller (102).

4. The energy storage device according to claim 2 or 3, characterized in that, The battery mounting position (200) further includes: An inlet is provided for the battery device (100) to enter the battery device mounting position (200). The inlet intersects with the two side walls (11). The first direction is the direction in which the inlet faces. Along the first direction or the second direction, the maximum size of the second receiving part (122) is smaller than the maximum size of the first roller (101).

5. The energy storage device according to claim 4, characterized in that, The first receiving portion (121) and the second receiving portion (122) are disposed along the first direction on the side of the sidewall (11) closest to the first receiving portion (121).

6. The energy storage device according to any one of claims 1 to 5, characterized in that, The first receiving portion (121) includes a first opening (1211), and the second receiving portion (122) includes a second opening (1221). The first opening (1211) penetrates the guide rail (12) along the thickness direction of the guide rail (12), and the second opening (1221) penetrates the guide rail (12) along the thickness direction of the guide rail (12). Along the first direction, the maximum size of the first opening (1211) is smaller than the diameter of the first roller (101), and the maximum size of the second opening (1221) is smaller than the diameter of the second roller (102).

7. The energy storage device according to claim 1, characterized in that, The first receiving portion (121) includes a third opening (1212), a transition portion (1214), and a first region (1213). The third opening (1212) is disposed on the side of the guide rail (12) close to the battery device (100) along the thickness direction. The first region (1213) is disposed on the side of the guide rail (12) away from the battery device (100) along the thickness direction. The transition portion (1214) connects the third opening (1212) and the first region (1213). Along the first direction, the maximum size of the first region (1213) is smaller than the maximum size of the third opening (1212).

8. The energy storage device according to claim 7, characterized in that, The first region (1213) includes a fourth opening along the first direction, wherein the maximum size of the third opening (1212) is greater than or equal to the maximum size of the first roller (101), and the maximum size of the fourth opening is less than the maximum size of the first roller (101).

9. The energy storage device according to claim 8, characterized in that, Along the second direction, the maximum size of the fourth opening is smaller than the maximum size of the third opening (1212).

10. The energy storage device according to claim 7, characterized in that, The first region (1213) includes a bottom wall, and along the first direction, the maximum dimension of the bottom wall is greater than or equal to the maximum dimension of the first roller (101).

11. The energy storage device according to any one of claims 7 to 10, characterized in that, The transition section (1214) includes an arc-shaped transition area (126).

12. The energy storage device according to claim 11, characterized in that, The arc transition area (126) is disposed opposite to each other on both sides of the first region (1213) along the first direction, and the arc transition area (126) has a larger slope near the battery device (100).

13. A battery device, characterized in that, The battery device is disposed in the energy storage device (1). The battery device includes a first roller (101) and a second roller (102). The first roller (101) and the second roller (102) are fixed to one side of the battery device along a first direction. The energy storage device (1) includes: Includes multiple battery device mounting positions (200) arranged along the direction of gravity; The battery mounting position (200) includes two guide rails (12) and two side walls (11) arranged opposite to each other along a second direction. The two guide rails (12) are used to support the battery device. The two guide rails (12) are respectively arranged at the same height on the two side walls (11). The first direction, the gravity direction and the second direction are perpendicular to each other. Each guide rail (12) is provided with a first receiving part (121) and a second receiving part (122) along the first direction, and the first receiving part (121) and the second receiving part (122) extend from the side of the two guide rails (12) toward the battery device in a direction away from the battery device; The distance between the first receiving portion (121) and the second receiving portion (122) is matched with the distance between the first roller (101) and the second roller (102) so that the first roller (101) is at least partially received in the first receiving portion (121) and the second roller (102) is at least partially received in the second receiving portion (122).

14. The battery device according to claim 13, characterized in that, The diameter of the first roller (101) is greater than the diameter of the second roller (102), or the width of the first roller (101) is greater than the width of the second roller (102).

15. An energy storage system, characterized in that, The energy storage system includes an energy storage device as described in any one of claims 1 to 12, and a battery device as described in claim 13 or 14.

Images