Energy storage device, energy storage system and charging network

Abstract

The utility model relates to the technical field of energy storage, and provides an energy storage device, an energy storage system and a charging network, and the energy storage device comprises a box body, at least two battery clusters, a support member and a plurality of connecting pipelines. According to the energy storage device provided by the utility model, the first mounting surface and the second mounting surface which are arranged in a stepped manner are formed on the bracket piece for fixedly connecting the pipeline in the first direction; the central axis of one connecting pipeline located on the first mounting surface and the central axis of the other connecting pipeline located on the second mounting surface are staggered in the first direction, so that when the battery device is disassembled and assembled in the third direction, the probability of interference between the connecting pipelines and the battery device is greatly reduced, and disassembly and assembly of the battery device are more facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage technology field especially provides a kind of energy storage device, energy storage system and charging network. BACKGROUND

[0002] The energy storage device can include one or more battery clusters to increase the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices connected in series by a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device. The energy storage device can be used in energy storage power plants, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at the appropriate time. For example, the energy storage device can store electrical energy during the low electricity consumption period, and provide electrical energy for related users or electrical equipment during the peak electricity consumption period.

[0003] The energy storage device includes a box body, and the internal space of the box body can be divided into a battery compartment, an electrical compartment, and a thermal management compartment, etc. As the accommodation of the battery device increases, the accommodation space for the fire pipe and the liquid cooling pipe in the battery compartment is compressed, which causes interference between the accommodation position of the battery device in the battery compartment and the liquid cooling pipe or the fire pipe. Therefore, when the battery device needs to be disassembled later, the liquid cooling pipe or the fire pipe also needs to be disassembled synchronously, which makes the process more complex. SUMMARY

[0004] The utility model discloses a kind of energy storage device, energy storage system and charging network, to solve the problem that the battery device in the energy storage device of prior art is caused by capacity increase, so that the installation space of each pipe is compressed, which causes interference between the accommodation position of the battery device in the battery compartment and the pipe, and the complex disassembly process of battery device is caused.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] In a first aspect, the present application provides an energy storage device, comprising:

[0007] a box body, the box body has a battery compartment;

[0008] at least two battery clusters, the at least two battery clusters are arranged side by side in the battery compartment along a first direction, a first gap is formed between adjacent two battery clusters, the battery cluster includes at least two battery devices stacked along a second direction, along a third direction, a second gap is formed between the battery device and the side wall of the battery compartment, the second gap is communicated with the first gap, the first direction, the second direction and the third direction intersect with each other;

[0009] A bracket piece is at least partially accommodated at the first gap, the bracket piece has a first mounting surface and a second mounting surface arranged in steps along a first direction, the first mounting surface and the second mounting surface both face the battery cluster, and in the first direction, the distance between the first mounting surface and the faced battery cluster is smaller than the distance between the second mounting surface and the same faced battery cluster, and in the third direction, the first mounting surface is farther away from the side wall of the battery compartment than the second mounting surface, and,

[0010] At least two connecting pipes are rotatably connected to at least one of the connecting pipes on the first mounting surface, and at least one of the connecting pipes is rotatably connected to the second mounting surface, and at least part of the connecting pipes is accommodated at the second gap.

[0011] The energy storage device of the utility model, the bracket piece for fixing and connecting the pipe is arranged in steps in the first direction to form the first mounting surface and the second mounting surface, that is, the central axis of one of the connecting pipes on the first mounting surface is staggered with the central axis of another connecting pipe on the second mounting surface in the first direction, so that when the battery device is disassembled along the third direction, the probability of interference between the connecting pipe and the battery device is greatly reduced, and the disassembly and assembly of the battery device are more convenient.

[0012] In some embodiments, the bracket piece includes a first connecting portion, a second connecting portion, and an intermediate portion smoothly connected to the first connecting portion and the connecting portion, the first connecting portion has the first mounting surface, the second connecting portion has the second mounting surface, and the surfaces of the intermediate portion are arranged at an obtuse angle with the first mounting surface and the second mounting surface.

[0013] By adopting the above technical scheme, the bracket piece is designed in three sections, specifically, the intermediate portion and the two connecting portions are connected in a smaller section difference to be arranged in a relatively narrow range.

[0014] In some embodiments, the first gap is spaced apart by two support beams, one end of the first connecting portion away from the intermediate portion forms a first bending portion, and the first bending portion is connected to one of the support beams.

[0015] By adopting the above technical scheme, the support beams improve the stacking effect of each battery device in the second direction, and provide mounting positions for the bracket piece.

[0016] In some embodiments, one end of the second connecting portion away from the intermediate portion forms a second bending portion, and the second bending portion is connected to the other support beam.

[0017] By adopting the technical scheme, the support beam is connected to improve the installation stability of the support member in the box.

[0018] In some embodiments, the connecting pipeline comprises a first pipe body rotatably connected to the first mounting surface and the second mounting surface, and a second pipe body connected to the first pipe body and extending in the first direction, the second heat exchange pipe second pipe body comprising a heat exchange adapter connected to the first heat exchange pipe first pipe body and a heat exchange extension, the heat exchange adapter having rigidity, the heat exchange adapter comprising a vertical segment rotatably connected to the first heat exchange pipe first pipe body and a horizontal segment connected to the vertical segment, the heat exchange extension being connected to the horizontal segment, the heat exchange extension having flexibility.

[0019] In the first direction, the minimum distance between the bending position of the heat exchange extension relative to the horizontal segment and the battery device is a, and the limit rotatable included angle between the extension direction of the horizontal segment and the first pipe body on the second mounting surface is b.

[0020] By adopting the technical scheme, the second pipe body is bent, the battery device and the heat exchange extension form a minimum distance a relative to the bending position of the horizontal segment, to meet the disassembly and assembly requirements of the battery device along the third direction, and the limit rotatable included angle b between the extension direction of the horizontal segment and the first pipe body on the second mounting surface.

[0021] In some embodiments, the connecting pipeline comprises a fire-fighting pipeline, the support member has a third mounting surface opposite to the first mounting surface, and the fire-fighting pipeline comprises a first fire-fighting pipe arranged on the third mounting surface in the second direction and a second fire-fighting pipe connected to the first fire-fighting pipe.

[0022] By adopting the technical scheme, the fire-fighting pipeline and the connecting pipeline can be arranged on the opposite two mounting surfaces of the support member to maximize the space utilization.

[0023] In some embodiments, the first connecting portion has the third mounting surface, the support beam has a first end surface opposite to the first mounting surface and a second end surface opposite to the third mounting surface.

[0024] In the first direction, a first installation sub-interval is formed between the first end surface and the first mounting surface, a second installation sub-interval is formed between the second end surface and the third mounting surface, and the sum of the first installation sub-interval and the second installation sub-interval is equal to the width of the first gap.

[0025] By adopting the technical scheme, the first gap is divided into the first installation sub-interval and the second installation sub-interval by the first connecting part of the support piece, so that the installation of the connecting pipeline and the fire pipeline is met.

[0026] In some embodiments, the second fire pipeline comprises a fire adapter connected to the first fire pipeline and a fire extension connected to the fire adapter, the fire adapter has rigidity, and the first connecting part is provided with a notch structure for accommodating the fire adapter.

[0027] By adopting the technical scheme, the notch structure formed on the first connecting part forms a avoiding space for the fire adapter, so that the fire adapter is more smoothly installed on the first fire pipeline.

[0028] In some embodiments, at least part of the first fire pipeline is snap-connected to the third installation surface.

[0029] By adopting the technical scheme, at least part of the first fire pipeline is snap-connected to the third installation surface, so that the fire pipeline is quickly disassembled and assembled.

[0030] In a second aspect, the application further provides an energy storage system, comprising a power conversion device and the energy storage device as described above, and the power conversion device is used for electrically connecting a power generation device and the energy storage device.

[0031] In a third aspect, the application further provides a charging network, comprising a charging pile and the energy storage device as described above or the energy storage system as described above, and the energy storage device is used for providing electric energy for the charging pile.

[0032] The beneficial effects of the second aspect and the third aspect can refer to the beneficial effects of the first aspect, which will not be repeated here.

[0033] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will specifically describe the embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0035] Figure 1 A partial view of the energy storage device provided by the prior art is shown in the figure.

[0036] Figure 2 A front view of the energy storage device provided by the embodiment of the utility model;

[0037] Figure 3 A structure schematic view of each battery device in the energy storage device provided by the embodiment of the utility model;

[0038] Figure 4 For Figure 3 The enlarged view of A in the middle;

[0039] Figure 5 A first partial view of the energy storage device provided by the embodiment of the utility model;

[0040] Figure 6 A front view of the support piece of the energy storage device provided by the embodiment of the utility model;

[0041] Figure 7 A second partial view of the energy storage device provided by the embodiment of the utility model;

[0042] Figure 8 A third partial view of the energy storage device provided by the embodiment of the utility model;

[0043] Figure 9 A schematic view of the energy storage system provided by the embodiment of the utility model;

[0044] Figure 10 A schematic view of the charging network provided by the embodiment of the utility model.

[0045] In the figure, various reference signs:

[0046] 1000, energy storage device; 2000, energy storage system; 2100, power conversion device; 2200, power generation device; 3000, charging network; 3100, charging pile; 3110, connector;

[0047] 100, box body;

[0048] 200, battery cluster; 201, battery device;

[0049] 300, support piece; 301, first mounting surface; 302, second mounting surface; 303, third mounting surface; 304, first connecting part; 305, intermediate part; 306, second connecting part; 307, first bending part; 308, second bending part; 309, notch structure;

[0050] 400, connecting pipeline; 401, first pipe body; 402, second pipe body; 403, heat exchange adapter; 404, heat exchange extension; 405, vertical section; 406, horizontal section;

[0051] 500, fire fighting pipeline; 501, first fire fighting pipeline; 502, second fire fighting pipeline; 503, fire fighting adapter; 504, fire fighting extension;

[0052] 601, first gap; 602, second gap;

[0053] 700, support beam; 701, first end face; 702, second end face;

[0054] X, first direction; Y, second direction; Z, third direction;

[0055] 10, support structure; 20, heat exchange pipeline; 30, battery. DETAILED DESCRIPTION

[0056] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0057] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0058] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0059] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] The energy storage device can include one or more battery clusters to increase the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices connected in series by a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device. 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 electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during off-peak hours and provide electrical energy to related users or electrical equipment during peak hours.

[0061] The energy storage device includes a box body, and an internal space of the box body can be divided into a battery compartment, an electrical compartment, and a thermal management compartment, etc. As the accommodation of the battery device increases, the accommodation space for the fire pipe and the liquid cooling pipe in the battery compartment is compressed, which causes the battery device to interfere with the liquid cooling pipe or the fire pipe in the accommodation position of the battery compartment. Therefore, when the battery device is disassembled later, the liquid cooling pipe or the fire pipe needs to be disassembled synchronously, which makes the process more complex. Specifically, as shown in Figure 1 The bracket structure in the figure adopts a flat mounting surface design, and two groups of heat exchange pipes are arranged on the flat mounting surface of the bracket structure. Therefore, the rotation angle of the two groups of heat exchange pipes in the height direction of the box body is limited, which interferes with the disassembly of the battery along the width direction of the box body.

[0062] Therefore, the energy storage device is provided. The bracket for fixing the connecting pipe is arranged on the first mounting surface and the second mounting surface in the first direction, that is, the central axis of the first pipe on the first mounting surface is staggered with the central axis of the first pipe on the second mounting surface in the first direction. Therefore, when the battery device is disassembled along the third direction, the probability of interference between the connecting pipe and the battery device is greatly reduced, which is more conducive to the disassembly of the battery device.

[0063] Specifically, the energy storage device can include one or more battery clusters to increase the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices connected in series by a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0064] 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 in the embodiments of the present application can be any power system that needs to use an energy storage device.

[0065] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0066] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body.

[0067] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0068] As an example, the thermal management module can include a liquid cooling unit that provides cooling liquid for adjusting the temperature of the battery monomer to each battery device through a pipeline.

[0069] As an example, the master control module can be a battery management unit of the battery cluster, used for monitoring and managing the battery cluster. The master control module can monitor the current, voltage, power, or temperature, etc. of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch, etc.

[0070] As an example, the general control module can be a battery management unit of the energy storage device, used for monitoring and managing the energy storage device. The general control module can monitor the current, voltage, power, state of charge, or temperature, etc. of the energy storage device. For example, the charging and discharging current and voltage of the energy storage device can be controlled. As an example, the general control module includes an insulation monitoring module (IMM), a master battery management unit (MBMU), an EtherNet (ETH) and an optical fiber conversion module, etc.

[0071] As an example, the fire-fighting module includes a control panel, a detector, an alarm device, etc., used for detecting, alarming, or extinguishing the energy storage system.

[0072] As an example, the power distribution module can be used for power distribution to the modules that need to use electricity in the energy storage device.

[0073] Please refer to Figure 2 、 Figure 3 、 Figures 5 to 8 The application provides an energy storage device 1000, comprising a box body 100, at least two battery clusters 200, a support member 300 and a plurality of connecting pipelines 400.

[0074] The box body 100 has a battery compartment; the at least two battery clusters 200 are arranged side by side in the battery compartment along a first direction X, and a first gap 601 is formed between two adjacent battery clusters 200; each battery cluster 200 comprises at least two battery devices 201 arranged in layers along a second direction Y, and a second gap 602 is formed between the battery devices 201 and the side wall of the battery compartment along a third direction Z, the second gap 602 is in communication with the first gap 601, and the first direction X, the second direction Y and the third direction Z intersect with each other; the support member 300 is at least partially accommodated in the first gap 601, and the support member 300 has a first mounting surface 301 and a second mounting surface 302 arranged in steps along the first direction X, both the first mounting surface 301 and the second mounting surface 302 face the battery cluster 200, and the distance between the first mounting surface 301 and the battery cluster 200 facing it is smaller than the distance between the second mounting surface 302 and the same battery cluster 200 facing it along the first direction X, and the first mounting surface 301 is farther away from the side wall of the battery compartment than the second mounting surface 302 along the third direction Z; at least one connecting pipeline 400 is rotatably connected to the first mounting surface 301, and at least one connecting pipeline 400 is rotatably connected to the second mounting surface 302, and at least part of the connecting pipeline 400 is accommodated in the second gap 602.

[0075] It can be understood that, for the convenience of understanding, the first direction X is the direction in which the battery devices 201 are arranged side by side, that is, the first direction X is the length direction or the width direction of the battery devices 201, or the length direction or the width direction of the box body 100; the second direction Y is the direction in which the battery devices 201 are arranged side by side, that is, the second direction Y is the thickness direction of the battery devices 201, or the height direction of the box body 100; the third direction Z is the width direction or the length direction of the battery devices 201, or the width direction or the length direction of the box body 100, and the battery devices 201 are also installed into the battery compartment from this direction.

[0076] The battery compartment is a space part for accommodating each battery cluster 200. Here, the battery compartment can have a solid structure with a separate shell, or a virtual structure without a solid shell, i.e., it belongs to a part of the internal space of the box 100. In the first direction X, a space is also reserved between two adjacent battery clusters 200 for the heat exchange pipeline or the fire-fighting pipeline, so the first gap 601 is used to accommodate the part of the heat exchange pipeline and / or the fire-fighting pipeline extending in the second direction Y, and the second gap 602 is the gap formed between the end face of the battery device 201 in each battery cluster 200 and the side wall of the battery compartment, which can also accommodate the part of the heat exchange pipeline and / or the fire-fighting pipeline extending in the first direction X.

[0077] The battery cluster 200 is used to improve the voltage and capacity of the energy storage device. The battery cluster 200 can include a plurality of battery devices 201 connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters 200, the plurality of battery clusters 200 are connected in parallel to increase the capacity of the energy storage device.

[0078] The support member 300 is used to fix the pipeline such as the fire-fighting pipeline and / or the heat exchange pipeline. The support member 300 is similar to a sheet metal structural member and has a certain structural strength. The first mounting surface 301 and the second mounting surface 302 are the mounting surfaces of the support member 300 facing the same side of the battery device 201, and the first mounting surface 301 and the second mounting surface 302 are arranged in steps in the first direction X. Here, the first mounting surface 301 is closer to the battery device 201 than the second mounting surface 302, i.e., the minimum distance between the first mounting surface 301 and the battery cluster 200 it faces should be less than the minimum distance between the second mounting surface 302 and the same battery cluster 200, and in the third direction Z, the first mounting surface 301 is farther away from the side wall of the battery compartment than the second mounting surface 302, i.e., in the spatial direction, the first mounting surface 301 is located on the inner side of the first gap 601, and the second mounting surface 302 is located on the outer side of the first gap 601. Here, the inner side and the outer side of the first gap 601 are relative to the distance between the battery device. Understandably, the support member 300 should separate the first gap 601 into two parts, one part for mounting the heat exchange pipeline and the other part for mounting the fire-fighting pipeline or other pipelines, so the heat exchange pipeline arranged on the first mounting surface 301 and the heat exchange pipeline arranged on the second mounting surface 302 can be staggered in the first direction X, and the heat exchange pipeline arranged on the first mounting surface 301 is rotated around its axis in the second direction Y to provide a space for the battery device 201 to be disassembled from the third party. Here, the support member 300 can be a support structure, a flat plate structure, and a support block structure inserted into the first gap 601 in the second direction Y.

[0079] The connecting pipe 400 is a pipe for passing a heat exchange medium or a pipe for passing a fire-fighting medium, wherein the connecting pipe 400 can include a vertical pipe, i.e., a main pipe, arranged at the first gap 601 along the second direction Y and on the first mounting surface 301 and the second mounting surface 302, and of course, the connecting pipe 400 also includes a plurality of branch pipes connected to the main pipe, each of which can extend along the first direction X and be at least partially accommodated in the second gap 602. Among the connecting pipes 400, a part of the connecting pipes 400 can be connected to the mounting surface by switching, and the other connecting pipes 400 are connected to the mounting surface by other connection methods.

[0080] It should be noted that the distance between the mounting surface on the bracket 300 and the battery device 201 is defined with the battery device 201 interfering with the connecting pipe 400 in the third direction Z as the reference object, i.e., the above battery device 201 is used as the spatial reference basis of each mounting surface. In use, each mounting surface of the bracket 300 should correspond to the same battery device 201, i.e., after installation, each mounting surface on the bracket 300 in the first direction X can face the same battery device 201 on the left side of the bracket 300, or each mounting surface can face the same battery device 201 on the right side of the bracket 300.

[0081] The energy storage device 1000 of the utility model forms the first mounting surface 301 and the second mounting surface 302 arranged in steps in the first direction X for fixing the bracket 300 connected to the connecting pipe 400, i.e., the center axis of one of the connecting pipes 400 on the first mounting surface 301 and the center axis of another connecting pipe 400 on the second mounting surface 302 are staggered in the first direction, so that when the battery device 201 is disassembled along the third direction Z, the probability of interference between the connecting pipe 400 and the battery device 201 is greatly reduced, which is more conducive to the disassembly and assembly of the battery device.

[0082] Please refer to Figures 5 to 8 In some embodiments, the bracket 300 includes a first connecting portion 304, a second connecting portion 306, and an intermediate portion 305 connected smoothly to the first connecting portion 304 and the connecting portion, the first connecting portion 304 has the first mounting surface 301, the second connecting portion 306 has the second mounting surface 302, and the surfaces of the intermediate portion 305 are arranged at an obtuse angle with the first mounting surface 301 and the second mounting surface 302.

[0083] It can be understood that the first connecting portion 304, the intermediate portion 305, and the second connecting portion 306 are main structural parts of the bracket 300, and the first connecting portion 304, the intermediate portion 305, and the second connecting portion 306 are sequentially connected by the transition of the intermediate portion 305, so that the first mounting surface 301 on the first connecting portion 304 and the second mounting surface 302 on the second connecting portion 306 are both arranged towards the battery device 201 along the second direction Y.

[0084] Here, the intermediate portion 305 mainly serves to connect the first connecting portion 304 and the second connecting portion 306, and since the first gap 601 has a small width, the size of the intermediate portion 305 is also in the order of millimeters, so if the intermediate portion 305 is directly bent by 90 degrees or close to 90 degrees, the connection positions of the intermediate portion 305 and the two connecting portions are prone to breakage, and therefore, the surface of the intermediate portion 305 is arranged at an obtuse angle with the first mounting surface 301 and the second mounting surface 302 to realize the intermediate portion 305.

[0085] For example, the bracket 300 adopts a small gap design to smoothly transition the intermediate portion 305 and the two mounting portions. Specifically, the first mounting surface 301 of the first connecting portion 304 is arranged at an obtuse angle with the surface of the intermediate portion 305, and optionally, the obtuse angle is close to 180 degrees, and the second mounting surface 302 of the second connecting portion 306 is arranged at an obtuse angle with the surface of the intermediate portion 305, and optionally, the obtuse angle is close to 180 degrees. Then, compared with the intermediate portion formed by bending the bracket 300 by 90 degrees, the overall length of the intermediate portion 305 provided by the embodiment is longer, and the connection positions with the two connecting portions are also more gentle, which can effectively reduce the damage caused by stress concentration.

[0086] In this way, the bracket 300 is designed in three sections, specifically, the intermediate portion 305 and the two connecting portions are connected in a smaller gap manner to be in a relatively narrow range.

[0087] Please refer to Figure 5 and Figure 6 In some embodiments, two support beams 700 are arranged at the first gap 601, and the end of the first connecting portion 304 away from the intermediate portion 305 forms a first bending portion 307, and the first bending portion 307 is connected to one of the support beams 700.

[0088] It can be understood that the support beam 700 is a beam structure for fixing each battery device 201 in the battery compartment, and in the battery compartment, the number of support beams 700 can be multiple.

[0089] The first bending part 307 is a connecting structure formed on the first connecting part 304, and the connecting mode of the first bending part 307 to the support beam 700 includes but is not limited to welding, threaded connection, clamping, threaded connection, etc. After the first bending part 307 is connected to the support beam 700, the bracket 300 is fixed at the first gap 601.

[0090] In this way, the support beam 700 improves the stacking effect of the battery device 201 in the second direction Y, and provides a mounting position for the bracket 300.

[0091] Please refer to Figure 5 and Figure 6 In some embodiments, the second connecting part 306 is formed with a second bending part 308 at one end away from the middle part 305, and the second bending part 308 is connected to another support beam 700.

[0092] It can be understood that the second bending part 308 is a connecting structure formed on the second connecting part 306, and the connecting mode of the second bending part 308 to the inner wall of the box body 100 includes but is not limited to welding, threaded connection, clamping, threaded connection, etc. After the second bending part 308 is connected to the other support beam 700, the bracket 300 is further fixed at the first gap 601.

[0093] In this way, the support beam 700 improves the stacking effect of the battery device 201 in the second direction Y, and provides a mounting position for the bracket 300.

[0094] Please refer to Figure 4 and Figure 7 In some embodiments, the connecting pipeline 400 includes a first pipe body 401 rotatably connected to the first mounting surface 301 and the second mounting surface 302, and a second pipe body 402 connected to the first pipe body 401 and extending in the first direction X, the second pipe body 402 includes a heat exchange adapter 403 connected to the first pipe body 401 and a heat exchange extension 404, the heat exchange adapter 403 has rigidity, the heat exchange adapter 403 includes a vertical section 405 rotatably connected to the first pipe body 401 and a horizontal section 406 connected to the vertical section 405, the heat exchange extension 404 is connected to the horizontal section 406, and the heat exchange extension 404 has flexibility.

[0095] In the first direction X, the minimum distance between the bending position of the heat exchange extension 404 relative to the horizontal section 406 and the battery device 201 is a, and the limit rotatable included angle between the extension direction of the horizontal section 406 and the first pipe body 401 on the second mounting surface 302 is b.

[0096] It can be understood that the first pipe body 401 is arranged at the first gap 601 along the second direction Y and is connected with the vertical pipe on the first mounting surface 301 and the second mounting surface 302, that is, the first pipe body 401 is the main pipe, the second pipe body 402 is the horizontal pipe extending along the first direction X, that is, the second pipe body 402 is the branch pipe, and the second pipe body 402 is usually made of flexible material, and when the battery device 201 is disassembled along the third direction Z, the second pipe body 402 can be bent to avoid, or the second pipe body 402 can be arranged in a staggered manner with the battery device 201 of the current layer, and the avoidance requirement can also be met.

[0097] The heat exchange adapter 403 is similar to the structure of a three-way valve and should have two first joints for connecting the two first pipe bodies 401 above and below and a second joint for connecting the heat exchange extension 404. Therefore, the heat exchange adapter 403 should have rigidity to meet the connection requirement. Specifically, the vertical section 405 is the part of the heat exchange adapter 403 connected with the first pipe body 401 along the second direction Y, and the horizontal section 406 is the part of the heat exchange adapter 403 connected with the heat exchange extension 404 along the first direction X. Since the heat exchange extension 404 needs to be bent to meet the disassembly requirement of the battery device 201, the heat exchange extension 404 should have flexibility.

[0098] The bending position of the heat exchange extension 404 relative to the horizontal section 406 is the position of the heat exchange extension 404 that can be bent when the heat exchange extension 404 is bent relative to the horizontal section 406, rather than the position connected with the horizontal section 406. Then, the distance a is the minimum distance between the position and the battery device 201. When the battery device 201 is disassembled along the third direction Z, the horizontal section 406 should be rotated towards the first pipe body 401 on the second mounting surface 302 to avoid, and then the angle b is the maximum rotatable angle of the horizontal section 406 relative to the first pipe body 401 on the second mounting surface 302. For comparison, in the comparative example of installing the heat exchange pipe on a bracket structure without using a stepped mounting surface, for convenience of illustration, as shown in Figure 7 , the minimum distance between the bending position of the heat exchange extension 404 relative to the horizontal section 406 and the battery device 201 is set as a1, the limit rotatable angle between the extension direction of the horizontal section 406 and the first pipe body 401 on the second mounting surface 302 is set as b1, and as shown in Figure 1As shown, the minimum distance in the comparative example is a2, and the included angle in the comparative example is b2. Therefore, a1 is greater than a2. Here, the greater the value of a, the smaller the risk of interference between the battery device 201 and the second pipe body 402 of the fire-fighting pipeline in the third direction Z, and the greater the value of b, the greater the angle of rotation of the horizontal section 406 in the second pipe body 402, and the smaller the risk of interference between the battery device 201 and the second pipe body 402 of the fire-fighting pipeline in the third direction Z.

[0099] Therefore, the heat exchange extension 404 is bent relative to the horizontal section 406, and the battery device 201 and the bent position of the heat exchange extension 404 relative to the horizontal section 406 form a minimum distance a to meet the disassembly and assembly requirements of the battery device 201 in the third direction Z, and the extension direction of the horizontal section 406 and the first pipe body 401 on the second mounting surface 302 form a limit rotatable included angle b.

[0100] Please refer to Figures 2 to 8 In some embodiments, the connecting pipeline 400 includes a fire-fighting pipeline 500, and the support member 300 has a third mounting surface 303 opposite the first mounting surface 301. The fire-fighting pipeline 500 includes a first fire-fighting pipe 501 arranged on the third mounting surface 303 in the second direction Y and a second fire-fighting pipe 502 connected to the first fire-fighting pipe 501.

[0101] It can be understood that the fire-fighting pipeline 500 is a pipeline for storing fire-fighting medium to extinguish fire when the energy storage device 1000 catches fire. The first fire-fighting pipe 501 is arranged in the first gap 601 in the second direction Y and is a vertical pipeline on the third mounting surface 303, that is, the first fire-fighting pipe 501 is a main pipeline, and the second fire-fighting pipe 502 is a horizontal pipeline extending in the first direction X, that is, the second fire-fighting pipe 502 is a branch pipeline.

[0102] Here, the third mounting surface 303 is a mounting surface opposite the first mounting surface 301, that is, the support member 300 separates the first gap 601 to arrange the first fire-fighting pipe 501 and the first pipe body 401 on opposite sides of the support member 300. Since the support member 300 is designed in a segmented manner, a plurality of spaces can be reserved for the installation of the first fire-fighting pipe 501.

[0103] Therefore, the fire-fighting pipeline 500 and the connecting pipeline 400 can be arranged on opposite mounting surfaces of the support member 300 to maximize space utilization.

[0104] Please refer to Figures 2 to 4 , Figure 8In some embodiments, the first connecting portion 304 has a third mounting surface 303, the support beam 700 has a first end surface 701 opposite to the first mounting surface 301, and a second end surface 702 opposite to the third mounting surface 303.

[0105] In the first direction X, a first mounting sub-pitch L1 is formed between the first end surface 701 and the first mounting surface 301, and a second mounting sub-pitch L2 is formed between the second end surface 702 and the third mounting surface 303, and the sum of the first mounting sub-pitch L1 and the second mounting sub-pitch L2 is equal to the width of the first gap 601.

[0106] It can be understood that the first end surface 701 and the second end surface 702 of the support beam 700 are respectively facing the end surface of the corresponding battery device 201 in the first direction X. In addition, the end surfaces of the support beam 700 and the mounting surfaces of the bracket member 300 jointly enclose a space for installing various pipelines, i.e., the first end surface 701 and the first mounting surface 301 jointly enclose a space required for installing the first pipe body 401, and the second end surface 702 and the second mounting surface 302 jointly enclose a space required for installing the first fire-fighting pipe 501.

[0107] Here, since the bracket member 300 is designed in a segmented manner as a whole, the first mounting sub-pitch L1 and the second mounting sub-pitch L2 can be adjusted, and compared with the comparative example shown in Figure 1 As shown in the comparative example, the second mounting sub-pitch L2 can be adjusted to be more generous, providing more installation space for the first fire-fighting pipe 501 of the fire-fighting pipeline 500.

[0108] In this way, the first connecting portion 304 of the bracket member 300 is used to divide the first gap 601 into the first mounting sub-pitch and the second mounting sub-pitch, so as to meet the installation of the connecting pipeline 400 and the fire-fighting pipeline 500.

[0109] Please refer to Figure 2 , Figure 4 and Figure 8 In some embodiments, the second fire-fighting pipe 502 includes a fire-fighting adapter 503 connected to the first fire-fighting pipe 501 and a fire-fighting extension 504 connected to the fire-fighting adapter 503, the fire-fighting adapter 503 has rigidity, and the first connecting portion 304 is provided with a notch structure 309 for accommodating the fire-fighting adapter 503.

[0110] It can be understood that the fire adapter 503 is similar to a three-way valve structure, and should have two first joints for connecting the upper and lower first fire pipes 501 and a second joint for connecting the fire extension 504. Therefore, the fire adapter 503 should have rigidity to meet the connection requirements. In addition, since the fire extension 504 needs to be arranged in space to realize fire treatment of each battery device 201, the fire extension 504 can have flexibility or rigidity.

[0111] Here, the notch structure 309 is a through structure or a non-through structure formed on the first connecting portion 304. If the notch structure 309 is a through structure, it will be connected by two spaces separated by the first connecting portion 304. If the notch structure 309 is a non-through structure, the notch structure 309 is a pit formed on the third mounting surface 303. The notch structure 309 on the first connecting portion 304 is used to realize the avoidance of the lower fire adapter 503, that is, the fire adapter 503 can be avoided by the thickness dimension of the first connecting portion 304 in the first direction X.

[0112] In this way, the notch structure 309 formed on the first connecting portion 304 forms an avoidance space for the fire adapter 503 to meet the more smooth installation of the fire adapter 503 on the first fire pipe 501.

[0113] In some embodiments, at least part of the first fire pipe 501 is connected to the third mounting surface 303 by clamping.

[0114] It can be understood that,

[0115] Similarly, at least part of the first fire pipe 501 can be connected to the third mounting surface 303 by a clamping structure. Specifically, holes are provided on the third mounting surface 303, and the clamping structure is arranged in the corresponding holes.

[0116] In this way, at least part of the first fire pipe 501 is clamped on the third mounting surface 303 to realize quick disassembly and assembly of the fire pipe 500.

[0117] Please refer to Figures 2 to 8 In a specific embodiment, the energy storage device 1000 includes a box body 100, a plurality of battery devices 201, a support member 300, a plurality of connecting pipes 400, and a multi-stage fire management.

[0118] The box 100 has a battery compartment; each battery device 201 is arranged side by side in the battery compartment along a first direction X, and a first gap 601 is formed between two adjacent battery devices 201; a support member 300 is arranged at the first gap 601 along a second direction Y, the support member 300 has a first mounting surface 301 and a second mounting surface 302 arranged in steps along the first direction X, the first mounting surface 301 and the second mounting surface 302 both face the battery device 201, and along the first direction X, the first mounting surface 301 is closer to the battery device 201 than the second mounting surface 302, the second direction Y is perpendicular to the first direction X; and the connecting pipeline 400 includes a first pipe body 401 arranged on the first mounting surface 301 and the second mounting surface 302 along the second direction Y, and a second pipe body 402 connected to the first pipe body 401 and arranged in extension along the first direction X, the central axis of the first pipe body 401 on the first mounting surface 301 is staggered with the central axis of the first pipe body 401 on the second mounting surface 302 along the first direction X, so that the battery device 201 is disassembled from a third direction Z to form a clearance space, the third direction Z is perpendicular to the first direction X and the second direction Y.

[0119] The support member 300 includes a first connecting portion 304, a second connecting portion 306, and an intermediate portion 305 connected to the first connecting portion 304 and the connecting portion, the first connecting portion 304 has the first mounting surface 301, the second connecting portion 306 has the second mounting surface 302, and the surface of the intermediate portion 305 is arranged at an obtuse angle with the first mounting surface 301 and the second mounting surface 302. A support beam 700 is arranged at the first gap 601, one end of the first connecting portion 304 away from the intermediate portion 305 forms a first bending portion 307, and the first bending portion 307 is connected to the support beam 700. One end of the second connecting portion 306 away from the intermediate portion 305 forms a second bending portion 308, and the second bending portion 308 is connected to the inner wall of the box 100.

[0120] The second pipe body 402 includes a heat exchange adapter 403 connected to the first pipe body 401 and a heat exchange extension 404, the heat exchange adapter 403 has rigidity, the heat exchange adapter 403 includes a vertical segment 405 rotatably connected to the first pipe body 401 and a horizontal segment 406 connected to the vertical segment 405, the heat exchange extension 404 is connected to the horizontal segment 406, and the heat exchange extension 404 has flexibility.

[0121] Along the first direction X, the minimum distance between the bending position of the heat exchange extension 404 relative to the horizontal segment 406 and the battery device 201 is a; and the limit rotatable included angle between the extension direction of the horizontal segment 406 and the first pipe body 401 on the second mounting surface 302 is b.

[0122] The support member 300 has a third mounting surface 303 opposite to the first mounting surface 301, and the fire-fighting pipeline 500 includes a first fire-fighting pipe 501 arranged on the third mounting surface 303 in the second direction Y and a second fire-fighting pipe 502 connected to the first fire-fighting pipe 501. The first connecting portion 304 has the third mounting surface 303, the support beam 700 has a first end surface 701 opposite to the first mounting surface 301 and a second end surface 702 opposite to the third mounting surface 303; in the first direction X, the first end surface 701 and the first mounting surface 301 form a first mounting sub-interval L1, the second end surface 702 and the third mounting surface 303 form a second mounting sub-interval L2, and the sum of the first mounting sub-interval L1 and the second mounting sub-interval L2 is equal to the width of the first gap 601.

[0123] The first fire-fighting pipe 501 is connected to the third mounting surface 303 in a clamping manner, and the first pipe body 401 is connected to the first mounting surface 301 and the second mounting surface 302 in a clamping manner.

[0124] Please refer to Figure 9 According to some embodiments of the present application, the present application further provides a power storage system 2000, which comprises a power conversion device 2100 and the power storage device 1000 in the above embodiments, and the power conversion device 2100 is used for electrically connecting a power generation device 2200 and the power storage device 1000.

[0125] In some embodiments, the power storage system 2000 can comprise one or more power storage devices 1000 and a power conversion device 2100 (Power Converter System, PCS for short), and the power conversion device 2100 is used for connecting between the power generation device 2200 and the power storage device 1000. The power generation device 2200 is used for generating electric energy, and the electric energy generated by the power generation device 2200 can be stored into the power storage device 1000 through the power conversion device 2100. As an example, the power generation device 2200 can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. The specific type of the power generation device 2200 is not limited in the present application.

[0126] Please refer to Figure 10 According to some embodiments of the present application, the present application further provides a charging network 3000, which comprises a charging pile 3100 and the power storage device 1000 in the above embodiments or the power storage system 2000 in the above embodiments, and the power storage device 1000 is used for providing electric energy for the charging pile 3100.

[0127] For example, the charging network 3000 comprises a charging pile 3100 and an energy storage device 1000, the charging pile 3100 is electrically connected with the energy storage device 1000, and the energy storage device 1000 is used for providing electric energy for the charging pile 3100. The charging pile 3100 is electrically connected with the battery device 201 in the energy storage device 1000 through a cable, and the battery device 201 can provide the stored electric energy to the charging pile 3100. The charging pile 3100 has one or more connectors used for connecting with an electric device, so that the electric device can be charged.

[0128] The energy storage device 1000 can be located inside the charging pile 3100 (for example, a charging and storing integrated machine) or outside the charging pile 3100.

[0129] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An energy storage device, characterized by, The application relates to a battery pack, comprising: a box body having a battery compartment; at least two battery clusters arranged side by side in the battery compartment along a first direction, a first gap being formed between two adjacent battery clusters, each battery cluster comprising at least two battery devices stacked along a second direction, a second gap being formed between the battery devices and the side wall of the battery compartment along a third direction, the second gap being in communication with the first gap, the first direction, the second direction and the third direction intersecting with each other; a bracket member at least partially accommodated in the first gap, the bracket member having a first mounting surface and a second mounting surface arranged in steps along the first direction, the first mounting surface and the second mounting surface both facing the battery clusters, the distance between the first mounting surface and the same facing battery cluster being smaller than the distance between the second mounting surface and the same facing battery cluster along the first direction, and the first mounting surface being farther away from the side wall of the battery compartment than the second mounting surface along the third direction; and at least two connecting pipelines, at least one of the connecting pipelines being rotatably connected to the first mounting surface, and at least one of the connecting pipelines being rotatably connected to the second mounting surface, and at least part of the connecting pipelines being accommodated in the second gap.

2. The energy storage device of claim 1, wherein: The bracket member comprises a first connecting portion, a second connecting portion and an intermediate portion connected between the first connecting portion and the second connecting portion, the first connecting portion having the first mounting surface, the second connecting portion having the second mounting surface, and the surface of the intermediate portion being arranged at an obtuse angle with the first mounting surface and the second mounting surface.

3. The energy storage device of claim 2, wherein: Two support beams are arranged at intervals in the first gap, one end of the first connecting portion away from the intermediate portion forming a first bending portion connected to one of the support beams.

4. The energy storage device of claim 3, wherein: One end of the second connecting portion away from the intermediate portion forms a second bending portion connected to the other support beam.

5. The energy storage device of any one of claims 1 to 4, wherein: The connecting pipeline comprises a first pipeline body rotatably connected to the first mounting surface and the second mounting surface, and a second pipeline body connected to the first pipeline body and arranged in extension along the first direction, the second pipeline body comprising a heat exchange adapter connected to the first pipeline body and a heat exchange extension, the heat exchange adapter having rigidity, the heat exchange adapter comprising a vertical section rotatably connected to the first pipeline body and a horizontal section connected to the vertical section, the heat exchange extension being connected to the horizontal section, the heat exchange extension having flexibility; In the first direction, the minimum distance between the bending position of the heat exchange extension relative to the horizontal section and the battery devices is a; and the limit rotatable included angle between the extension direction of the horizontal section and the first pipeline body on the second mounting surface is b.

6. The energy storage device of claim 3 or 4, wherein: The connecting pipeline comprises a fire-fighting pipeline, the support member has a third mounting surface opposite to the first mounting surface, and the fire-fighting pipeline comprises a first fire-fighting pipeline arranged on the third mounting surface in the second direction and a second fire-fighting pipeline connected to the first fire-fighting pipeline.

7. The energy storage device of claim 6, wherein: The first connecting portion has the third mounting surface, the support beam has a first end surface opposite to the first mounting surface and a second end surface opposite to the third mounting surface; In the first direction, a first mounting sub-interval is formed between the first end surface and the first mounting surface, and a second mounting sub-interval is formed between the second end surface and the third mounting surface, and the sum of the first mounting sub-interval and the second mounting sub-interval is equal to the width of the first interval.

8. The energy storage device of claim 7, wherein: The second fire-fighting pipeline comprises a fire-fighting adapter connected to the first fire-fighting pipeline and a fire-fighting extension connected to the fire-fighting adapter, the fire-fighting adapter has rigidity, and a notch structure is arranged on the first connecting portion for accommodating the fire-fighting adapter.

9. The energy storage device of claim 6, wherein: At least part of the first fire-fighting pipeline is connected to the third mounting surface in a clamping manner.

10. An energy storage system characterized by: The energy storage device as claimed in any one of claims 1 to 9, wherein the energy storage device is electrically connected to a power conversion device for converting power generated by a power generation device into electrical energy.

11. A charging network characterized by: The energy storage device as claimed in any one of claims 1 to 9, or the energy storage system as claimed in claim 10, wherein the energy storage device is used to provide electrical energy for a charging pile.

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