Patent Application
20250183411
The present disclosure relates to the field of batteries, and in particular, to a battery cabinet and an energy storage system using the same.
With the development of electrochemical energy storage technology, applications of energy storage in power industry increase. For example, new energy projects such as wind and photovoltaic cause significant fluctuations in a power grid during grid connection due to limitations of natural environment. A problem that the power grid cannot consume due to the significant fluctuations can be effectively solved through a large-scale energy storage system. To meet capacity requirements, energy storage systems are usually bulky and usually include a large number of cells. Mounting, fixation, and heat dissipation of these cells face significant challenges.
In view of this, the present disclosure provides a battery cabinet and an energy storage system using the same, which are configured to solve the problems of mounting, fixation, and heat dissipation of batteries in the battery cabinet and the energy storage system. The present disclosure provides the following technical solutions.
A battery cabinet is provided. The battery cabinet includes:
In some implementation, the battery cabinet further includes a cabinet door. The cabinet door is movably connected to the cabinet body to open or close the opening disposed on a side surface of the battery cabinet.
The temperature adjusting device is mounted on the cabinet door.
In some embodiments, the temperature adjusting device is an air cooling device. Each battery unit includes:
In some implementation modes, the air cooling device includes an external circulation air inlet, an external circulation air outlet, an internal circulation air inlet, and an internal circulation air outlet. Both the external circulation air inlet and the external circulation air outlet are configured to be communicated with the outside of the cabinet body, and both the internal circulation air inlet and the internal circulation air outlet are communicated with the accommodation cavity.
An air guide duct is disposed in a top in the accommodation cavity, and one end of the air guide duct is communicated with the internal circulation air outlet and is configured to guide an airflow blown out from the internal circulation air outlet to flow through the battery units.
In some implementation modes, the battery cabinet further includes an air guide piece disposed at the top in the accommodation cavity, and the air guide piece matches the cabinet body to form the air guide duct.
In some implementation modes, the heat dissipation flow channel is communicated with a first side of the shelf close to the cabinet door and a second side of the shelf far away from the cabinet door.
The airflow blown out from the internal circulation air outlet is configured to be guided to a first side of each of the battery units away from the cabinet door through the air guide duct, to flow through the heat dissipation flow channel, and to be collected to enter the internal circulation air inlet.
In some implementation modes, the airflow blown out from the internal circulation air outlet is configured to be guided to a gap between the shelf and an inner wall of the cabinet body by the air guide duct.
In some implementation modes, the temperature adjusting device is a liquid cooling device. The battery unit includes:
In some implementation modes, the shelf includes:
The tray and at least a part of the partition plates include the heat dissipation flow channel.
In some implementation modes, in the battery unit, terminals of the cells face the opening of the tray, and are electrically connected through connecting pieces.
In some implementation modes, in the multiple battery units are stacked in multiple layers, a tray of a first battery unit located on a first layer seals an opening of a tray of a second battery unit located on a second layer, and the second layer is below and adjacent to the first layer.
The battery cabinet further includes an upper cover, configured to seal the open end of the tray of a battery unit located on an uppermost layer.
An energy storage system includes:
In some implementation modes, a mounting portion is disposed on the bearing frame.
At least one of the distribution device and the junction device is mounted on the mounting portion and is at least partially located in the outer contour.
In some implementation modes, the bearing frame is a 20-foot standard container, and the battery assembly is cuboid-shaped and has a width W, a depth D, and a height H, which satisfy: about 5000 mm≤W≤about 5958 mm, about 2200 mm≤D≤about 2438 mm, and about 2191 mm≤H≤about 2746 mm.
In some implementation modes, the bearing frame is a 40-foot standard container, and the battery assembly is cuboid-shaped, a width W of the battery assembly satisfies about 11138 mm≤W≤about 12096 mm, a depth D of the battery assembly satisfies about 2200 mm≤D≤about 2438 mm, and a height H of the battery assembly about 2191 mm≤H≤about 2746 mm.
In some implementation modes, the bearing frame includes:
In some implementation modes, the bottom bracket has a height B1, which satisfies: about 150 mm≤B1≤about 400 mm.
In some implementation modes, the end frame includes:
In some implementation modes, each of the two longitudinal beams has a dimension A1 in the length direction, which satisfies: about 50 mm≤A1≤about 80 mm.
In some implementation modes, the two longitudinal beams, the cross beam, and the bottom bracket are enclosed to form a mounting space, and the mounting portion is disposed on an inner wall of at least one of the longitudinal beams.
At least one of the distribution device and the junction device is mounted on the mounting portion and is located in the mounting space.
In some implementation modes, both the distribution device and the junction device are located in the mounting space, and the distribution device and the junction device do not protrude from an end face of the longitudinal beam.
In some implementation modes, the bottom bracket includes:
In some implementation modes, the bearing frame further includes a top beam, the top beam is connected between the two end frames and is arranged opposite to the bottom bracket to define an upper side of the battery assembly.
In some implementation modes, the battery cabinet is cuboid-shaped and is defined with a width dimension W1, a depth dimension D1, and a height dimension H1, which satisfy: 1000 mm≤W1≤1192 mm, and a single battery cabinet is defined with a depth 1100 mm≤D1≤1219 mm and a height dimension 1850 mm≤H1≤2746 mm.
Width directions of the multiple battery cabinets are arranged in the length direction of the battery assembly.
In the foregoing battery cabinet and the energy storage system using the same, mounting, fixation, and heat dissipation of a large number of cells are problems to be solved. The battery units are arranged, which facilitates mounting and fixation of a large number of cells in layers. Meanwhile, the heat dissipation flow channel is formed in each battery layer, which not only solves a problem of heat dissipation, and but also achieves uniform heat dissipation of the cells at various positions of the battery cabinet in a layered arrangement form.
Other aspects and advantages of the present disclosure will be given in the following description, some of which will become apparent from the following description or may be learned from practices of the present disclosure.
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and comprehensible in the description of the embodiments made with reference to the following accompanying drawings.
Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in accompanying drawings, where the same or similar elements or the elements having same or similar functions are denoted by the same or similar reference numerals throughout the description. The embodiments described below with reference to the accompanying drawings are examples and used only for explaining present disclosure, and cannot be construed as a limitation on present disclosure.
In the description of the present disclosure, it is to be understood that orientation or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “anticlockwise”, “axial”, “radial”, and “circumferential” are based on orientation or position relationships shown in the accompanying drawings, and are used only for ease and brevity of illustration and description, rather than indicating or implying that the mentioned device or component have to have a particular orientation or have to be constructed and operated in a particular orientation. Therefore, such terms cannot be construed as a limitation to the present disclosure.
In the description of the present disclosure, “multiple” means two or more than two, and “several” means one or more.
The following describes implementation mode of the present disclosure in detail with reference to the accompanying drawings.
Referring to
The energy storage system 1000 may be an industrial or commercial energy storage system. The battery assembly 201 included in the energy storage system 1000 may be set according to requirements. An outer contour of the bearing frame 100 is configured in a shape of a container, and the bearing frame 100 defines an accommodation space configured to accommodate and fix the battery assembly 201. In addition, a mounting portion 1206 is formed/disposed on the bearing frame 100, and is configured to mount at least one of the junction device 400 and the distribution device 300.
The distribution device 300 is adapted/configured to connect an external load to provide electrical energy to the external load. The junction device 400 is adapted to electrically connect the battery assembly 201 and the distribution device 300. The battery assembly 201 usually includes multiple battery units, for example, the battery assembly 201 may include multiple battery cabinets 200. The multiple battery cabinets 200 are connected to the distribution device 300 through the junction device 400, and the distribution device 300 distributes power output uniformly. In other implementation modes, the battery assembly 201 may be in other forms, for example, including one battery cabinet 200. A contour of the battery cabinet 200 in this implementation mode may be similar to or the same as an overall contour formed by the multiple battery cabinets 200 in the foregoing implementation modes. An interior of one battery cabinet 200 in this implementation mode may include multiple battery assemblies. The multiple battery assemblies may be collected and connected to the distribution device 300 through the junction device 400, and the distribution device 300 distributes power output uniformly.
Referring to
It may be understood that, in some implementation modes, the battery assembly 201 may include only one battery cabinet 200, as long as the battery cabinet 200 can fill the accommodation space.
The battery cabinet 200 may include a cabinet body 210, multiple battery units 230, a temperature adjusting device 240, and a battery management device 250.
The cabinet body 210 is internally provided with an accommodation cavity. The multiple battery units 230 is arranged in the accommodation cavity. The temperature adjusting device 240 is arranged in the accommodation cavity and is configured to perform heat exchange with an outside of the cabinet body 210 to adjust temperatures of the multiple battery units 230. The battery management device 250 may be arranged in the accommodation cavity, electrically connected to the multiple battery units 230, and configured for management of charging/discharging the battery units 230.
In an implementation, an opening may be provided in one side of the cabinet body 210. The battery cabinet 200 further includes a cabinet door 220. The cabinet door 220 is movably connected to the cabinet body 210 to open or close the opening. The cabinet door 220 is arranged, which can facilitate operations such as mounting, overhauling, and maintaining of the battery cabinet 200.
The temperature adjusting device 240 may be mounted on the cabinet door 220. In an implementation, the temperature adjusting device 240 may be an air conditioner, that is, the battery cabinet 200 dissipates heat in an air cooling form. The temperature adjusting device 240 may be a water cooling device. A heat exchange portion of the water cooling device may be arranged on the cabinet door 220. The following describes by taking the temperature adjusting device 240 being an air cooled air conditioner as an example.
For example, as shown in
In the foregoing battery cabinet 200 and the energy storage system 1000 using the same, mounting, fixation, and heat dissipation of a large number of cells are problems to be solved. The battery units are arranged, which facilitates of mounting and fixation of a large number of cells in layers. Meanwhile, the heat dissipation flow channel is formed/disposed in each battery unit 230, which not only solves a problem of heat dissipation, and but also achieves uniform heat dissipation of the cells at various positions of the battery cabinet 200 in a layered arrangement form.
The temperature adjusting device 240 is an air cooling device and include an external circulation air inlet 2401, an external circulation air outlet 2402, an internal circulation air inlet 2403, and an internal circulation air outlet 2404. Both the external circulation air inlet 2401 and the external circulation air outlet 2402 are adapted to be communicated with external atmosphere, the outside of the cabinet body; and both the internal circulation air inlet 2403 and the internal circulation air outlet 2404 are communicated with the accommodation cavity.
An air guide duct is provided in a top in the accommodation cavity, and one end of the air guide duct is communicated with the internal circulation air outlet 2404 and is configured to guide an airflow blown from the internal circulation air outlet 2404 to flow through the battery units 230.
For example, the battery cabinet 200 further includes an air guide piece 270 arranged at the top in the accommodation cavity, and the air guide piece 270 matches the cabinet body to form the air guide duct. The air guide duct is configured to guide the airflow blown out from the internal circulation air outlet 2404 to one side (e.g., a first side) of the battery unit 230 away from the cabinet door 220. In other words, cold air blown from the temperature adjusting device 240 into the cabinet body 210 is guided to rear sides of the multiple battery units 230 through the air guide piece 270 at the top, and enters the air ducts between the battery units 230 in sequence from top to bottom to cool the cells 2302.
In some implementation modes, the air guide duct is further configured to guide the airflow blown out from the internal circulation air outlet 2404 to at least one side of the battery unit 230 adjacent to the cabinet door 220. As such, the air guide piece 270 not only guides the cooling airflow to the rear sides of the battery units 230, but also simultaneously guides the cooling airflow to a left side and a right side of the battery unit 230.
An explosion-proof valve 280 is arranged on the cabinet door. An interior of the cabinet body 210 may be communicated with the external atmosphere when the explosion-proof valve 280 is open.
In some implementation modes, the battery cabinet 200 is cuboid-shaped and is defined with a width dimension W1, a depth dimension D1, and a height dimension H1, which substantially satisfy: 1000 mm≤W1≤1192 mm, and a single battery cabinet is defined with a depth about 1100 mm≤D1≤about 1219 mm and a height dimension about 1850 mm≤H1≤about 2746 mm. Width directions of the multiple battery cabinets 200 are arranged in the length direction of the battery assembly 201.
Referring to
Referring to
In this embodiment, the battery cabinet 200 includes multiple stacked battery units 230. The battery unit 230 includes a shelf 2301 and multiple cells 2302. Multiple battery accommodation areas are formed inside the shelf 2301. The multiple cells 2302 are respectively accommodated in the battery accommodation areas. A heat dissipation flow channel is formed in the shelf 2301. The heat dissipation flow channel is configured to circulate a cooling medium to cool the cells 2302. Correspondingly, the temperature adjusting device 240 may be a heat exchange assembly of a liquid cooling device. A water inlet/outlet pipe 2304 is arranged on the shelf 2301. The heat dissipation flow channel inside the shelf 2301 is communicated with the heat exchange assembly through the water inlet/outlet pipe 2304, so as to cool the cell 2302 through a liquid cooling solution.
For example, in some implementation modes, the shelf 2301 may include a tray 2311 and multiple partition plates 2312. One end of the tray 2311 is open, that is, the tray 2311 forms a housing with an opening in one side. The multiple partition plates 2312 are arranged in the tray 2311 to partition an interior of the tray 2311 into the multiple battery accommodation areas. The heat dissipation flow channel is formed in the tray 2311 and at least part of the partition plates 2312. In an implementation, the water inlet/outlet pipe 2304 may be arranged on the tray 2311. The heat dissipation flow channel is formed in a part of partition plates 2312 or all partition plates 2312. The partition plates 2312 are in contact with the cells 2302 in the battery accommodation areas, which can achieve constrained positioning and liquid cooling heat dissipation simultaneously.
In the battery unit 230, a terminal of the cell 2302 may face an opening of the tray 2311, and the terminals of the multiple cells 2302 are electrically connected through connecting pieces 2303 to achieve a series connection or a parallel connection between the cells 2302.
In the multiple stacked battery units 230, the tray 2311 of the battery unit 230 located on an upper layer may be configured to seal the opening of the tray 2311 of an adjacent battery unit 230 on a lower layer. The battery cabinet 200 further includes an upper cover (not shown in the drawings), configured to seal the opening of the tray 2311 of the battery unit 230 located on an uppermost layer.
At least one of the distribution device 300 and the junction device 400 is mounted on the mounting portion 1206. Correspondingly, the distribution device 300 and/or the junction device 400 mounted on the mounting portion 1206 is at least partially located in the outer contour of the bearing frame 100, so as to ensure that the energy storage system 1000 has a regular contour as much as possible.
For clarity, the “outer contour” of the bearing frame 100 may be understood as a three-dimensional contour enclosed by outermost edges of the bearing frame 100. In consideration of factors such as mounting of the battery assembly 201 and a need for controlling weight of the bearing frame 100, the bearing frame 100 is usually not set as a closed cuboid-shaped box body (for example, a standard container), but is set as a basically regular cuboid-shaped frame structure according to the contour of the container. In this case, vertexes on the outermost side of the frame structure may be taken as control points of the outer contour of the frame structure, and the cuboid-shaped contour formed by connecting the multiple control points may be understood as the “outer contour” of the bearing frame 100. Meanwhile, the outer contour of the bearing frame 100 will refer to general manufacturing and usage requirements of the container, allowing an error and a tolerance within an appropriate range.
In the foregoing energy storage system 1000, the outer contour of the bearing frame 100 is configured in the shape of the container, the bearing frame 100 defines the accommodation space, and the battery assembly 201 is accommodated and fixed in the accommodation space. Meanwhile, the mounting portion 1206 is further formed on the bearing frame 100. At least one of the distribution device 300 and the junction device 400 is mounted on the mounting portion 1206 and is at least partially located in the outer contour of the bearing frame 100. In this way, the bearing frame 100 cannot only serve as a mounting frame of the energy storage system 1000 to accommodate and fix the battery assembly 201, the junction device 400, and the distribution device 300, but also directly serve as a container unit to participate in transportation when configured in the shape of the container, so that hierarchical simplification of structural components can be achieved, thereby improving a space utilization rate and improving energy density. Meanwhile, structures such as the battery assembly 201, the distribution device 300, and the junction device 400 still remain significant design freedom, which can still meet personalized designs of products while achieving unified contours. For example, in a case of basically the same contour, capacity, weight, structural strength, and the like of the energy storage system 1000 can still be adjusted by adjusting settings such as a structure of the battery assembly 201, an internal configuration of the bearing frame 100, and structural pieces of the bearing frame 100, thereby achieving product differentiation.
The outer contour of the bearing frame 100 is configured as the contour of the container. The container may be a non-standard container with an application scale, and may be a standard container. For example, the container may be a container with general international standards, so as to facilitate transportation and circulation of the energy storage system. The following describes by taking internationally recognized 20-foot standard container and 40-foot standard container as examples respectively. It may be understood that, as long as a purpose of facilitating transportation and circulation can be achieved, the bearing frame may be set with reference to national standards, regional standards, and company standards, and has universality and interchangeability.
For example, in some implementation modes, the container is a 20-foot standard container. The 20-foot standard container is defined with contour dimensions: a length of 6058 mm, a height of 2591 mm (a height of a high cube is 2896 mm), and a depth of 2438 mm. Therefore, as shown in
In some implementation modes, the container may be a 40-foot standard container. Similarly, the 40-foot standard container is defined with fixed contour dimensions: a length of 12192 mm, a height of 2591 mm (a height of a high cube is 2896 mm), and a depth of 2438 mm. To simplify variables, referring to
The contour dimensions of the battery assembly 201 are smaller than those of the bearing frame 100 to reserve a space for a structural design of the bearing frame 100 and simultaneously ensure that the bearing frame 100 may protect the battery assembly 201 after the battery assembly 201 is mounted to the bearing frame 100.
Referring to
The bottom bracket 110 is configured to bear the battery assembly 201 and defines two opposite sides of the battery assembly 201. In an embodiment, the bottom bracket 110 has a length direction, a width direction, and a height direction that are orthogonal to one another. The bottom bracket 110 supports a bottom of the battery assembly 201 to limit the battery assembly 201 in the height direction. In an implementation, the bottom of the battery assembly 201 may be connected and fixed to the bottom bracket 110 through a connecting piece. In this way, the bottom bracket 110 may limit the battery assembly 201 in a horizontal direction.
In the length direction, the width direction, and the height direction, the height direction may be understood as a vertical direction. Generally, in practical applications, the height direction of the energy storage system 1000 after being placed or mounted is the vertical direction. Therefore, to facilitate understanding, a direction of the energy storage system 1000 that is the same as the vertical direction in a normal use state is defined as the height direction of the energy storage system 1000. Correspondingly, the length direction and the width direction of the energy storage system 1000 are defined in the horizontal direction. The width direction may be understood as a depth direction of the energy storage system 1000. The length direction may be understood as being consistent with the length direction of the energy storage system 1000.
The two end frames 120 are oppositely arranged on two sides of the bottom bracket 110 in the length direction and are configured to define the other two opposite sides of the battery assembly 201.
The bottom bracket 110 needs to meet a load bearing requirement, and meanwhile, an overall space occupied by the bottom bracket 110 needs to be controlled. In some implementation modes, the bottom bracket 110 is defined with a height dimension B1, which satisfies: 150 mm≤B1≤400 mm.
In some implementation modes, the end frame 120 may include two longitudinal beams 1201 and a cross beam 1202. The two longitudinal beams 1201 extend in the height direction and are spaced away on the two sides of the bottom bracket 110 in the width direction. One end of the longitudinal beam 1201 is connected to the bottom bracket 110. The cross beam 1202 is connected between the other ends of the two longitudinal beams 1201. In other words, the two longitudinal beams 1201 form two upright posts. A lower end of the upright post may be roughly flush with a lower end face of the bottom bracket 110 and is fixedly connected to a side surface of the bottom bracket 110. The cross beam 1202 is connected between upper ends of the two upright posts, so as to form the end frame 120. The two end frames 120 are clamped on two opposite sides of the battery assembly 201.
In an implementation, the longitudinal beam 1201 is defined with a dimension A1 in the length direction, which substantially satisfies: 50 mm≤A1≤80 mm. A dimension of the cross beam 1202 in the length direction does not exceed the dimension A1 of the longitudinal beam 1201. Thus, the end frame 120 has appropriate constraint strength, and does not occupy excessive space.
The two longitudinal beams 1201, the cross beam 1202, and the bottom bracket 110 are enclosed to form a mounting space, and the mounting portion 1206 is arranged on an inner wall of at least one of the longitudinal beams 1201. In an embodiment, the two longitudinal beams 1201, the cross beam 1202, and the bottom bracket 110 are enclosed on a periphery to form a frame with a mounting space in a center. At least one of the distribution device 300 and the junction device 400 is mounted on the mounting portion 1206 and is at least partially located in the mounting space.
In an implementation, both the distribution device 300 and the junction device 400 may be mounted through the mounting portion 1206. In an implementation, both the distribution device 300 and the junction device 400 may be located in the mounting space. In other words, both the distribution device 300 and the junction device 400 are located in the mounting space, and the distribution device 300 and the junction device 400 do not protrude from an end face of the longitudinal beam 1201. Thus, the energy storage system 1000 can be maintained in the contour of the container defined by the bearing frame 100 to facilitate transportation, and various devices can be protected by using the bearing frame 100. Referring to
The bottom bracket 110 may include two side plates 1101 and multiple reinforcing plates 1102, which form a roughly cuboid-shaped base together. The two side plates 1101 may be arranged in parallel and extend in the length direction. The multiple reinforcing plates 1102 are spaced away from each other, and two ends of the reinforcing plate 1102 are respectively connected to inner walls of the two side plates 1101. The two side plates 1101 and the multiple reinforcing plates 1102 form a roughly cuboid-shaped base together. In an implementation, a wire hole 1103 is formed in the reinforcing plate 1102. A cable 600 of the battery assembly 201 may be led out to the junction device 400 through a gap between the reinforcing plates 1102 and the wire hole 1103. Folded edges may be provided at bottoms of the side plates 1101 and the reinforcing plates 1102, so as to facilitate supporting the battery assembly 201 born on the side plates 1101 and the reinforcing plates 1102.
Referring to
In the description of this specification, description of reference terms such as “a specific embodiment” or “a specific example”, means including features, structures, materials, or features described in the embodiment or example in at least one embodiment or example of this application. In this specification, examples of descriptions of the foregoing terms do not necessarily refer to the same embodiment or example.
Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art may understand that: A variety of changes, modifications, substitutions, and variants can be made to these embodiments without departing from a principle and a purpose of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210987305.0 | Aug 2022 | CN | national |
This application is a continuation application of International Patent Application No. PCT/CN2023/090267, filed on Apr. 24, 2023, which is based on and claims priority to and benefits of Chinese Patent Application No. 202210987305.0 filed on Aug. 17, 2022. The entire content of all of the above-referenced applications is incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/090267 | Apr 2023 | WO |
| Child | 19050633 | US |
