Energy storage device

Abstract

The utility model provides an energy storage device. The energy storage device comprises at least one energy storage part, and the energy storage part comprises a frame which defines a plurality of installation spaces and a plurality of openings correspondingly communicated with the installation spaces; the fire-fighting component is arranged on the frame; a liquid cooling member provided in the frame; each battery module is provided with a mounting position located in the mounting space and a dismounting position separated from the frame through the opening. According to the technical scheme, the energy storage device is convenient to disassemble, assemble and carry the battery module, the space utilization rate is improved, and the energy storage device has high reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, and in particular to an energy storage device. Background Art

[0002] At present, the application scenarios of domestic energy storage batteries are mainly container-type energy storage, while station-type energy storage is a new application scenario. The energy storage container is formed by multiple battery packs, monitoring systems, battery management units, special fire protection systems, special air conditioners, special liquid cooling systems, energy storage inverters and isolation transformers integrated in a 40-foot container, while the energy storage station is formed by multiple battery packs, monitoring systems, battery management units, special fire protection systems, special air conditioners, special liquid cooling systems, energy storage inverters and isolation transformers integrated in a building. The battery packs include battery packs, upper and lower shells, fire protection components and liquid cooling components. The fire protection components are connected to the fire protection system outside the battery pack, and the liquid cooling components are connected to the liquid cooling system outside the battery pack.

[0003] However, containerized energy storage and station-type energy storage have the following problems:

[0004] 1) The battery packs and energy storage containers in the station energy storage system are heavy, difficult to install and carry, and have high transportation costs;

[0005] 2) The battery packs and energy storage containers in the station energy storage system need to be moved by forklifts. In this way, a forklift position needs to be reserved, resulting in low space utilization and large floor space.

[0006] 3) Whether it is a battery pack in an energy storage container or a battery pack in an energy storage station, when it is damaged, the entire battery pack needs to be removed from the shelf in the station or the container and replaced. However, since the fire-fighting components are connected to the fire-fighting system outside the battery pack, and the liquid cooling components are connected to the liquid cooling system outside the battery pack, this will lead to difficulties in removal. After removal, both the fire-fighting system and the liquid cooling system will fail, thus affecting the operation of the entire energy storage system. Utility Model Content

[0007] The main purpose of the utility model is to provide an energy storage device, which is convenient for disassembly, assembly and transportation of battery modules, improves space utilization and has high reliability.

[0008] In order to achieve the above-mentioned purpose, the utility model provides an energy storage device, including at least one energy storage part, the energy storage part including: a frame, defining a plurality of installation spaces and a plurality of openings corresponding to the plurality of installation spaces; a fire-fighting component, arranged on the frame; a liquid cooling component, arranged on the frame; a plurality of battery modules, the battery modules having an installation position located in the installation space, and a disassembly position detached from the frame through the opening.

[0009] Furthermore, a plurality of battery modules are arranged corresponding to a plurality of installation spaces.

[0010] Furthermore, the plurality of installation spaces are arranged in two rows along the first direction, the two rows of installation spaces are symmetrically arranged, and the openings are located on the peripheral side of the frame.

[0011] Furthermore, the plurality of battery modules are arranged in two rows, and the liquid cooling component includes a liquid cooling side plate located between the two rows of battery modules to separate the two rows of battery modules.

[0012] Furthermore, the energy storage device also includes a plurality of partitions disposed on the frame, the plurality of partitions are arranged in rows and columns, and an installation space is provided between two adjacent partitions along a second direction disposed at an angle to the first direction.

[0013] Furthermore, the liquid cooling component also includes a liquid cooling plate installed on the frame, and a liquid cooling plate is provided at the bottom of each battery module to cool the battery module.

[0014] Furthermore, the energy storage device also includes a heat-conducting component for transferring heat, and the heat-conducting component is arranged between the liquid cooling plate and the battery module.

[0015] Furthermore, the fire-fighting component includes a spray component arranged on the frame, and each installation space is provided with a plurality of spray components, and the liquid outlet of the spray component is arranged toward the battery module.

[0016] Furthermore, the fire-fighting components also include: a controller; a temperature measuring component, which is arranged on the frame, and each installation space is provided with a temperature measuring component, and each temperature measuring component is control-connected to the controller; a control valve, which is arranged on the frame, and each installation space is provided with a control valve, and each control valve is control-connected to the controller, and the control valve is control-connected to multiple spray components located in the same installation space.

[0017] Furthermore, the energy storage device also includes an electrical connector for electrically connecting two adjacent battery modules, and the electrical connector is detachably connected to the battery module.

[0018] Furthermore, the energy storage device includes a plurality of energy storage parts, and the plurality of energy storage parts are arranged in sequence along the height direction thereof.

[0019] By applying the technical solution of the utility model, compared with the container-type energy storage device in the prior art, the present embodiment arranges the liquid cooling component, the fire fighting component and the battery module on the frame respectively, and the liquid cooling component and the fire fighting component are separated from the battery module. In this way, the battery module can be used as the minimum management unit of the energy storage device. On the one hand, the weight of the minimum management unit of the energy storage device can be reduced, so as to facilitate the disassembly and transportation of the battery module, and reduce the transportation cost; on the other hand, compared with the prior art that requires a forklift to carry out a battery pack weighing five or six hundred kilograms, in the present embodiment, the battery pack can be carried out manually or with the help of a small machine, so that the staff can directly carry the battery module out from the frame without reserving a forklift position, thereby improving space utilization and reducing the floor area; on the other hand, when the battery cell in the battery module is damaged, the staff can disassemble and replace the battery module alone without removing the fire fighting component and the liquid cooling component, so that the fire fighting system and the liquid cooling system can still work normally, thereby improving the reliability of the energy storage device and reducing the difficulty of operation and maintenance of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A schematic structural diagram of an embodiment of the energy storage device of the utility model is shown;

[0022] Figure 2 Shows Figure 1 A top view of an energy storage device (wherein the frame is not shown); and

[0023] Figure 3 Shows Figure 1 Schematic diagram of the exploded structure of the energy storage part of the energy storage device.

[0024] The above drawings include the following reference numerals:

[0025] 1. Frame; 2. Installation space; 6. Battery module; 7. Liquid cooling side panel; 8. Partition; 9. Liquid cooling plate; 10. Spray component; 11. Electrical connector; 12. Through hole. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that the embodiments of the present utility model are mainly energy storage devices for station buildings.

[0028] like Figures 1 to 3 As shown, an embodiment of the utility model provides an energy storage device. The energy storage device includes at least one energy storage part, which includes a frame 1, a fire-fighting component, a liquid cooling component, and a plurality of battery modules 6. The frame 1 defines a plurality of installation spaces 2 and a plurality of openings corresponding to the plurality of installation spaces 2; the fire-fighting component is arranged on the frame 1; the liquid cooling component is arranged on the frame 1; and the plurality of battery modules 6, the battery modules 6 have an installation position located in the installation space 2, and a disassembly position separated from the frame 1 through the opening.

[0029] In the above technical scheme, on the one hand, compared with the container-type energy storage device in the prior art, this embodiment sets the liquid cooling component, the fire fighting component and the battery module 6 on the frame 1 respectively, and the liquid cooling component and the fire fighting component are separated from the battery module 6. In this way, the battery module 6 can be used as the minimum management unit of the energy storage device. On the one hand, the weight of the minimum management unit of the energy storage device can be reduced, so as to facilitate the disassembly and transportation of the battery module 6, and reduce the transportation cost; on the other hand, compared with the prior art that requires a forklift to carry out a battery pack of five or six hundred kilograms, in this embodiment, the battery pack can be carried out manually or with the help of a small machine, so that the staff can directly carry out the battery module 6 from the frame 1 without reserving a forklift position, thereby improving space utilization and reducing the floor area; on the other hand, when the battery cell in the battery module 6 is damaged, the staff can disassemble and replace the battery module 6 alone without removing the fire fighting component and the liquid cooling component, so that the fire fighting system and the liquid cooling system can still work normally, so as to improve the reliability of the energy storage device and reduce the difficulty of operation and maintenance of the energy storage device.

[0030] Specifically, in the embodiment of the utility model, the minimum management unit of the energy storage device eliminates the battery pack housing, so that the weight of the minimum management unit can be greatly reduced.

[0031] Specifically, in the embodiment of the present invention, the battery module 6 is composed of a plurality of battery cells connected in series and parallel.

[0032] like Figure 1 As shown, in the embodiment of the present invention, a plurality of battery modules 6 are arranged corresponding to a plurality of installation spaces 2, and the battery modules are installed into the corresponding installation spaces 2 through the corresponding openings. In this way, the problem of stacking of battery modules and resulting in a messy installation is avoided, so as to facilitate the installation of the battery modules.

[0033] like Figure 1 and Figure 3 As shown, in an embodiment of the present invention, a plurality of installation spaces 2 are arranged in two rows along a first direction, the two rows of installation spaces 2 are symmetrically arranged, and the openings are located on the peripheral side of the frame 1 .

[0034] Through the above arrangement, when the battery module 6 needs to be disassembled, the battery modules 6 of each row can be moved out from the outside of the frame 1, so that the battery module 6 can be quickly disassembled and assembled to achieve convenient operation and maintenance.

[0035] Preferably, in an embodiment of the utility model, the two rows of openings are arranged at intervals along the first direction, so that disassembly is facilitated.

[0036] Specifically, in the embodiment of the present invention, the number of battery modules 6 in each row may be one or more, preferably two.

[0037] It should be noted that if Figure 1 As shown, in the embodiment of the present invention, the two rows of installation spaces 2 are symmetrically arranged, that is, the structures of the left and right sides of the frame 1 are symmetrical.

[0038] In one embodiment, a plurality of battery modules 6 may also be arranged in a row, and the number of battery modules 6 in a row is multiple.

[0039] like Figure 2 and Figure 3 As shown, in an embodiment of the present invention, a plurality of battery modules 6 are arranged in two rows, and the liquid cooling component includes a liquid cooling side plate 7 located between the two rows of battery modules 6 to separate the two rows of battery modules 6 .

[0040] Through the above arrangement, the liquid-cooled side plate 7 can cool two rows of battery modules 6 at the same time, which not only improves the cooling effect of the battery module 6 but also improves the utilization rate of the liquid-cooled side plate 7 .

[0041] Specifically, in an embodiment of the utility model, a liquid cooling circuit is provided on the liquid cooling side plate 7, the liquid cooling circuit is arranged in a direction perpendicular to the first direction, and the coolant enters from the bottom of the liquid cooling side plate 7 and exits from the top, so that each row of battery modules 6 can be fully and evenly cooled.

[0042] like Figure 2 and Figure 3 As shown, in an embodiment of the utility model, the energy storage device also includes a plurality of partitions 8 arranged on the frame 1, the plurality of partitions 8 are arranged in rows and columns, and an installation space 2 is provided between two adjacent partitions 8 along a second direction arranged at an angle to the first direction.

[0043] Through the above arrangement, two adjacent battery modules 6 in the second direction can be separated by the partition 8. When a battery module 6 experiences thermal runaway, it is convenient to carry out separate fire protection for the battery module 6 experiencing thermal runaway, thereby avoiding affecting the battery module 6 that has not experienced thermal runaway.

[0044] Preferably, in an embodiment of the present utility model, the first direction is arranged perpendicular to the second direction.

[0045] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the liquid cooling component further includes a liquid cooling plate 9 mounted on the frame 1 , and a liquid cooling plate 9 is provided at the bottom of each battery module 6 to cool the battery module 6 .

[0046] Through the above-mentioned arrangement, the two partitions 8, the liquid-cooled side panels 7 and the liquid-cooled plate 9 can enclose the installation space 2 into a semi-enclosed independent section. In this way, on the one hand, when a battery module 6 has thermal runaway, it is convenient to carry out independent fire fighting on the battery module 6 having thermal runaway, thereby avoiding affecting the battery modules around the battery module 6 having thermal runaway (the battery modules 6 that have not had thermal runaway); on the other hand, the opening of the semi-enclosed section to the outside can facilitate the staff to install and disassemble the battery module 6, and the feasibility is strong; on the other hand, the liquid-cooled side panels 7 and the liquid-cooled plate 9 can cool the battery module 6 at the same time to improve the cooling effect on the battery module 6.

[0047] Preferably, in an embodiment of the present utility model, a liquid cooling circuit is provided on the liquid cooling plate 9, and the liquid cooling circuit is arranged along the second direction.

[0048] Preferably, in an embodiment of the present utility model, the liquid cooling component includes two liquid cooling plates 9 , and the two liquid cooling plates 9 are arranged corresponding to the two rows of battery modules 6 .

[0049] Preferably, in the embodiment of the present utility model, the liquid-cooling side plate 7 and the liquid-cooling plate 9 can be detachably connected to the frame 1 .

[0050] Specifically, in the embodiment of the utility model, the energy storage device further includes a heat-conducting member for transferring heat, and the heat-conducting member is arranged between the liquid cooling plate 9 and the battery module 6. In this way, the cooling effect on the battery module 6 can be improved.

[0051] Preferably, in an embodiment of the present invention, a heat-conducting member is provided between the liquid-cooled side plate 7 and the battery module 6 to transfer the heat of the battery module 6 to the liquid-cooled side plate 7 .

[0052] Preferably, in an embodiment of the present invention, the heat-conducting component is a heat-conducting pad.

[0053] Specifically, in the embodiment of the utility model, the liquid-cooled side plate 7 and the liquid-cooled plate 9 are both connected to the liquid cooling system, and the liquid cooling system is used to provide cooling liquid to the liquid-cooled side plate 7 and the liquid-cooled plate 9 respectively, and control the flow of the cooling liquid. The specific structure of the liquid cooling system is the prior art and will not be repeated here.

[0054] like Figure 2 and Figure 3 As shown, in the embodiment of the utility model, the fire-fighting component includes a spray component 10 arranged on the frame 1 , and each installation space 2 is provided with a plurality of spray components 10 , and the liquid outlet of the spray component 10 is arranged toward the battery module 6 .

[0055] Through the above arrangement, when a battery module 6 in the installation space 2 catches fire, multiple spray components 10 can immediately extinguish the battery module 6 without affecting the battery modules 6 in other installation spaces 2, thereby minimizing the failure loss.

[0056] Specifically, in the embodiment of the utility model, the plurality of spray components 10 are connected to a fire protection system, and the fire protection system is used to provide fire protection gas to the plurality of spray components 10. The fire protection system is a prior art and will not be described in detail here.

[0057] Preferably, in the embodiment of the utility model, the fire fighting system adopts gas fire fighting, specifically heptafluoropropane, and the spray component 10 continuously sprays gas into the installation space 2, so that the installation space 2 is filled with a large amount of inert gas, thereby isolating the battery module 6 from oxygen, thereby achieving the effect of fire extinguishing and cooling.

[0058] Preferably, in the embodiment of the present invention, the spray component 10 is a spray nozzle.

[0059] Specifically, in the embodiment of the utility model, the fire fighting component further includes a temperature measuring component, a control valve and a controller. The controller is arranged on the frame 1; the temperature measuring component is arranged on the frame 1, each installation space 2 is provided with a temperature measuring component, each temperature measuring component is connected to the controller by control; the control valve is arranged on the frame 1, each installation space 2 is provided with a control valve, each control valve is connected to the controller by control, and the control valve is connected to multiple spray components 10 located in the same installation space 2 by control.

[0060] Through the above arrangement, if the temperature of a battery module 6 in a certain installation space 2 is too high, the temperature measuring component in the corresponding installation space 2 will collect the excessively high temperature and transmit it to the controller, and the controller will control the corresponding multiple spray components 10 to open through the control valve to spray fire-fighting gas or liquid into the installation space 2 to extinguish the battery module 6 with too high a temperature, thereby avoiding the occurrence of fire and avoiding affecting the normal operation of other battery modules 6.

[0061] Preferably, in an embodiment of the utility model, the control valve is a solenoid valve, and the temperature measuring component is a temperature sensor.

[0062] like Figure 3 As shown, in the embodiment of the utility model, the energy storage device further comprises an electrical connector 11 for electrically connecting two adjacent battery modules 6, and the electrical connector 11 is detachably connected to the battery module 6. In this way, electrical connection between two adjacent battery modules 6 can be achieved.

[0063] It should be noted that, in the embodiment of the present invention, a plurality of battery modules 6 are connected in series and / or in parallel.

[0064] Specifically, in the embodiment of the present invention, the electrical connector 11 is connected to the battery module 6 by bolts, which is convenient for on-site installation and disassembly.

[0065] Specifically, in the embodiment of the utility model, the partition 8 is provided with a through hole 12 to facilitate the passage of the electrical connector 11 between two adjacent battery modules 6, and the partition 8 is made of quartz material, and the electrical connector 11 is wrapped with insulating material.

[0066] like Figure 1 As shown, in the embodiment of the utility model, the energy storage device includes a plurality of energy storage parts, and the plurality of energy storage parts are arranged in sequence along the height direction thereof. In this way, the space utilization rate of the station building can be improved, the energy density per unit space can be increased, and the floor space occupied by the energy storage device can be reduced.

[0067] The embodiment of the utility model provides a station building energy storage system, including a station building and the above energy storage device located in the station building, wherein there are multiple energy storage devices, and the multiple energy storage devices can be arranged in the station building along the length and width of the station building at intervals. In this way, the station building energy storage device can be waterproofed.

[0068] Since the present solution allows the battery module 6 to be carried out manually or with the aid of a small machine, the distance between two adjacent energy storage devices can be reduced, thereby improving the space utilization of the station building.

[0069] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: relative to the container-type energy storage device in the prior art, the present embodiment arranges the liquid cooling component, the fire fighting component and the battery module on the frame respectively, and the liquid cooling component and the fire fighting component are separated from the battery module, so that the battery module can be used as the minimum management unit of the energy storage device. On the one hand, the weight of the minimum management unit of the energy storage device can be reduced, so as to facilitate the disassembly and transportation of the battery module, and reduce the transportation cost; on the other hand, compared with the prior art that requires a forklift to carry out a battery pack weighing five or six hundred kilograms, in the present embodiment, the battery pack can be carried out manually or with the help of a small machine, so that the staff can directly carry out the battery module from the frame without reserving a forklift position, thereby improving space utilization and reducing the floor area; on the other hand, when the battery cell in the battery module is damaged, the staff can disassemble and replace the battery module alone without removing the fire fighting component and the liquid cooling component, so that the fire fighting system and the liquid cooling system can still work normally, thereby improving the reliability of the energy storage device and reducing the difficulty of operation and maintenance of the energy storage device.

[0070] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An energy storage device, characterized in that: The invention comprises at least one energy storage unit, wherein the energy storage unit comprises: A frame (1) defines a plurality of installation spaces (2) and a plurality of openings correspondingly connected to the plurality of installation spaces (2); A fire-fighting component, arranged on the frame (1); A liquid cooling component, arranged on the frame (1); A plurality of battery modules (6), each of which has an installation position located in the installation space (2) and a removal position detached from the frame (1) through the opening.

2. The energy storage device according to claim 1, characterized in that: The plurality of battery modules (6) are arranged corresponding to the plurality of installation spaces (2).

3. The energy storage device according to claim 1, characterized in that: The plurality of installation spaces (2) are arranged in two rows along a first direction, the two rows of installation spaces (2) are symmetrically arranged, and the openings are located on the peripheral side of the frame (1).

4. The energy storage device according to claim 3, characterized in that: The plurality of battery modules (6) are arranged in two rows, and the liquid cooling component comprises a liquid cooling side plate (7) located between the two rows of battery modules (6) to separate the two rows of battery modules (6).

5. The energy storage device according to claim 3, characterized in that: The energy storage device further comprises a plurality of partitions (8) arranged on the frame (1), wherein the plurality of partitions (8) are arranged in rows and columns, and along a second direction arranged at an angle to the first direction, one installation space (2) is provided between two adjacent partitions (8).

6. The energy storage device according to any one of claims 1 to 5, characterized in that: The liquid cooling component further comprises a liquid cooling plate (9) mounted on the frame (1), and the bottom of each battery module (6) is provided with the liquid cooling plate (9) to cool the battery module (6).

7. The energy storage device according to claim 6, characterized in that: The energy storage device also includes a heat-conducting component for transferring heat, wherein the heat-conducting component is arranged between the liquid cooling plate (9) and the battery module (6).

8. The energy storage device according to any one of claims 1 to 5, characterized in that: The fire-fighting component comprises a spray component (10) arranged on the frame (1), each installation space (2) is provided with a plurality of the spray components (10), and a liquid outlet of the spray component (10) is arranged toward the battery module (6).

9. The energy storage device according to claim 8, characterized in that: The fire fighting component also includes: Controller; A temperature measuring component is arranged on the frame (1), each of the installation spaces (2) is provided with the temperature measuring component, and each of the temperature measuring components is control-connected to the controller; A control valve is arranged on the frame (1), each installation space (2) is provided with the control valve, each control valve is control-connected to the controller, and the control valve is control-connected to a plurality of the spray components (10) located in the same installation space (2).

10. The energy storage device according to any one of claims 1 to 5, characterized in that: The energy storage device further comprises an electrical connector (11) for electrically connecting two adjacent battery modules (6), wherein the electrical connector (11) is detachably connected to the battery module (6).

11. The energy storage device according to any one of claims 1 to 5, characterized in that: The energy storage device comprises a plurality of energy storage parts, and the plurality of energy storage parts are arranged in sequence along the height direction thereof.

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