Energy storage system

Abstract

The utility model relates to an energy storage system, which comprises an energy storage equipment unit and a bearing device, the energy storage equipment unit is arranged on the bearing device, a first interface is arranged on the energy storage equipment unit, the bearing device comprises a second interface, the second interface is arranged on one side close to the energy storage equipment unit, and the second interface is connected to the first interface; the third interface is connected to the third interface of the adjacent bearing device; and the pipeline assembly is connected between the second interface and the third interface. According to the energy storage system, the assembly efficiency of the energy storage equipment unit can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of energy storage technology, and more particularly to an energy storage system. Background Technology

[0002] During the installation of energy storage containers, existing energy storage power stations typically require on-site trenching, cable laying, and terminal wiring. Cable connections are mostly fixed with bolts, making on-site operations cumbersome. This not only results in long construction cycles and high labor costs, but also in complex wiring, large footprint, and the need for rewiring for later maintenance or expansion, leading to poor flexibility. Utility Model Content

[0003] This disclosure provides an energy storage system that can improve the assembly efficiency of energy storage device units.

[0004] This disclosure provides an energy storage system, including an energy storage device unit and a support device. The energy storage device unit is disposed on the support device, and the energy storage device unit is provided with a first interface. The support device includes:

[0005] The second interface is located on the side closer to the energy storage unit, and the second interface is connected to the first interface;

[0006] The third interface is connected to the third interface of the adjacent support device; and

[0007] Piping assembly, connecting the second and third interfaces.

[0008] The energy storage system of this embodiment enables rapid connection between multiple energy storage units by mounting energy storage devices on a support device including pipeline components. During the assembly of the energy storage devices, there is no need for on-site trenching, cable laying, or terminal wiring, making on-site operation simpler, reducing the footprint, improving the assembly efficiency of energy storage devices, enabling rapid deployment, shortening the construction cycle, reducing labor costs, and improving the standardization and reliability of the energy storage system. Furthermore, there is no need for rewiring when the energy storage system is repaired or expanded later, which improves the convenience of expansion and maintenance of the energy storage system.

[0009] In some embodiments, the support device further includes:

[0010] The support substrate is configured to support the energy storage equipment unit. The support substrate includes a receiving cavity, in which pipeline assemblies are located. The second and third interfaces are both located on the support substrate.

[0011] In this embodiment, the support device serves as both the load-bearing foundation of the energy storage unit and the pipeline connection channel. The pipeline assembly is located within the support base, which reduces the occupied area and avoids additional space requirements between energy storage units. The pipeline assembly is located within the receiving cavity, which allows the support base to protect the internal pipeline assembly and extend its service life.

[0012] In some embodiments, the pipeline assembly includes at least one of power lines, communication lines, coolant lines, and fire extinguishing agent lines.

[0013] The interface of this embodiment integrates at least one of the following: power connection, signal / communication interface, coolant pipeline, and fire extinguishing agent pipeline. After the first interface and the second interface are connected, or after the two third interfaces are connected, the power line, communication line, coolant pipeline, and fire extinguishing agent pipeline are synchronously integrated and connected. This allows the energy storage unit to complete multiple electrical, signal, cooling, and fire protection connections on-site with just a plug-in connection. This reduces the need for multiple pipelines to be connected separately and further improves the assembly efficiency of the energy storage unit.

[0014] In some embodiments, the power lines include DC lines and AC lines, and the DC, AC, and communication lines are arranged in separate zones.

[0015] The partitioning of DC, AC, and communication lines in this embodiment ensures that cables with different functions do not interfere with each other, avoids electromagnetic coupling and signal interference, and facilitates later operation, maintenance, and repair.

[0016] In some embodiments,

[0017] The first interface and the second interface are connected via a first connecting guide mechanism; and / or

[0018] The two third interfaces are connected via a second connection guide mechanism.

[0019] This embodiment, by setting a first connection guide mechanism and a second connection guide mechanism, can ensure accurate alignment of the plug side and the socket side, thereby improving the accuracy of quick-connect connection between the first interface and the second interface and / or the two third interfaces.

[0020] In some embodiments,

[0021] The first interface and the second interface are locked by the first locking mechanism; and / or

[0022] The two third interfaces are locked by a second locking mechanism.

[0023] This embodiment, by setting a first locking mechanism and a second locking mechanism, can improve the connection stability between interfaces, prevent the interfaces from loosening due to vibration or external force in a vibration environment, and avoid affecting the stable transmission of power, signals, etc.

[0024] In some embodiments,

[0025] The power ports of the first and second interfaces adopt a plug-in structure, and the contact impedance between the first and second interfaces is less than a preset value; and / or

[0026] The power ports of the two third interfaces adopt a plug-in structure, and the contact impedance between the two third interfaces is less than the preset value.

[0027] This embodiment ensures that the plug-in structure maintains good conductivity even under high current conditions by limiting the contact impedance between interfaces to less than a preset value.

[0028] In some embodiments, the energy storage system further includes:

[0029] A first connection status detection mechanism is configured to detect the connection status between a first interface and a second interface; and / or

[0030] The second connection status detection mechanism is configured to detect the connection status between the two third interfaces.

[0031] This embodiment, by setting up a connection status detection mechanism, can ensure a stable connection between interfaces, avoid potential safety hazards such as poor contact or incomplete contact during the interface connection process, and improve the safety of the energy storage system.

[0032] In some embodiments, the energy storage system further includes:

[0033] The first connection status indicator is configured to emit at least one of sound, light, and electrical signals based on the detection result of the first connection status detection mechanism; and / or

[0034] The second connection status indicator is configured to emit at least one of sound, light, and electrical signals based on the detection result of the second connection status detection mechanism.

[0035] This embodiment provides operators with sufficient prompts by setting connection status indicators, ensuring stable connections between interfaces, avoiding potential safety hazards such as poor or incomplete contact during interface connection, and improving the safety of the energy storage system.

[0036] In some embodiments, a sealed connection is formed between the housing of the first interface and the housing of the second interface; and / or a sealed connection is formed between the housings of the two third interfaces.

[0037] This embodiment forms a sealed connection between the outer shells of the two side interfaces, which can prevent power transmission or communication transmission from being affected by dust or rain, meet the usage requirements of energy storage systems in outdoor or humid environments, and improve the reliability and security of the connection.

[0038] In some embodiments, the connection direction and connection method between the first interface and the second interface are unique; and / or the connection direction and connection method between the two third interfaces are unique.

[0039] The connection direction and connection method between the interfaces in this embodiment are unique, and it supports a physical foolproof design, which can avoid mis-insertion and improve the reliability and security of the connection.

[0040] In some embodiments,

[0041] The first interface is the plug side, and the second interface is the socket side. The first interface is provided with a first arc-extinguishing groove, which is configured to introduce and eliminate an electric arc at the moment of insertion or removal; and / or

[0042] One of the two third interfaces is the plug side, and the other is the socket side. The third interface on the plug side is provided with a second arc-extinguishing groove, which is configured to introduce and eliminate the electric arc at the moment of plugging and unplugging.

[0043] This embodiment, by setting an arc-extinguishing groove, can introduce the electric arc generated at the moment of insertion or removal into the ceramic wall or air gap to extinguish the arc, which can effectively reduce the damage of electric arc to equipment and personnel and improve the safety of energy storage system.

[0044] In some embodiments, the support device further includes a support base configured to support an energy storage device unit. The support base includes a receiving cavity, a pipeline assembly disposed within the receiving cavity, and a second interface and a third interface both disposed on the support base. The support base includes:

[0045] The first support section and the second support section both extend along the first direction. The first support section and the second support section are spaced apart along the second direction, and the second direction intersects the first direction. The energy storage equipment unit is located on the first support section and the second support section.

[0046] In this embodiment, the supporting base supports the energy storage device unit through two supporting sections, which can effectively avoid local stress concentration and enable the supporting base to support the energy storage device unit evenly, thereby improving the stability of the energy storage system. The segmented structure of the supporting base facilitates transportation and assembly, and can improve the applicability of the project.

[0047] In some embodiments, the support matrix further includes:

[0048] The third and fourth support sections both extend along the second direction and are connected between the first and second support sections. The third and fourth support sections are spaced apart along the first direction, and the energy storage unit is located on the first, second, third, and fourth support sections simultaneously.

[0049] In this embodiment, the support base is composed of four support sections forming a structurally stable quadrilateral support frame, which can effectively avoid local stress concentration and enable the support base to uniformly support the energy storage equipment unit, thereby improving the stability of the energy storage system. The segmented structure of the support base facilitates transportation and assembly, and can improve the applicability of the project.

[0050] In some embodiments, multiple energy storage devices and multiple supporting devices are provided, with multiple energy storage devices being disposed on multiple supporting devices in a one-to-one correspondence, and multiple energy storage devices being arranged along a first direction and / or multiple energy storage devices being arranged along a second direction, the second direction intersecting the first direction.

[0051] In this embodiment, the energy storage device units and the supporting devices are arranged in a one-to-one correspondence. Connecting a new supporting device can add an energy storage device unit, which can improve the convenience of expanding the energy storage system. Multiple energy storage device units are arranged along the first direction and / or the second direction, with a neat and compact layout, which can reduce the space occupation of the energy storage system.

[0052] In some embodiments, the third interface is connected to the third interface of an adjacent support device along a first direction, and / or the third interface is connected to the third interface of an adjacent support device along a second direction.

[0053] The support device of this embodiment can be extended bidirectionally in the first and second directions, which can improve the flexibility of the layout of energy storage equipment units; regardless of whether it is extended in the first or second direction, a third interface is used for connection, which can improve the standardization of the interface and improve the connection efficiency. Attached Figure Description

[0054] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure.

[0055] Figure 1 The diagram shows some embodiments of the energy storage device unit and support device assembly of the energy storage system disclosed herein.

[0056] Figure 2 Schematic diagrams of other embodiments of the energy storage device unit and support device assembly of the energy storage system disclosed herein.

[0057] Figure 3 This is a schematic diagram of the layout of some embodiments of the energy storage system disclosed herein, showing the connection of multiple support devices.

[0058] Figure 4 This is a schematic diagram showing the layout of some embodiments of the energy storage system disclosed herein.

[0059] Figure 5 This is a layout schematic diagram of some other embodiments of the energy storage system disclosed herein.

[0060] Explanation of reference numerals in the attached drawings: 1. Energy storage equipment unit; 2. Support device; 3. Energy storage converter; 4. Energy storage container; 5. Water-cooled unit; 6. Fire protection module; 7. Medium-voltage transformer; 8. Ring main unit; 9. Auxiliary transformer; 11. First interface; 21. Support base; 211. First support section; 212. Second support section; 213. Third support section; 214. Fourth support section; 22. Second interface; 23. Third interface; 24. Pipeline assembly; x, First direction; y, Second direction; z, Third direction. Detailed Implementation

[0061] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0062] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0063] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0064] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0065] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0066] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0067] First, this disclosure proposes an energy storage system, such as Figures 1 to 3 As shown, the device includes an energy storage unit 1 and a supporting device 2. The energy storage unit 1 is mounted on the supporting device 2 and has a first interface 11. The supporting device 2 includes:

[0068] The second interface 22 is located on the side close to the energy storage device unit 1, and the second interface 22 is connected to the first interface 11;

[0069] The third interface 23 is connected to the third interface 23 of the adjacent support device 2; and

[0070] Pipeline assembly 24 is connected between second interface 22 and third interface 23.

[0071] The energy storage unit 1 includes at least one of the following: energy storage container 4, energy storage cabinet, energy storage cluster rack, energy storage stack, energy storage converter 3, water-cooled unit 5, fire protection module, medium-voltage transformer 7 (MVT), ring main unit 8 (RMU), and auxiliary transformer 9. A second interface 22 is used to connect the supporting device 2 to the energy storage unit 1, and a third interface 23 is used to connect multiple supporting devices 2. The supporting devices 2 are located on the outside of the energy storage unit 1.

[0072] During the installation of the energy storage system, the support device 2 is first connected and placed on the ground through the third interface 23. Then, the energy storage unit 1 is hoisted and placed on the support device 2. At the same time as placement, the first interface 11 and the second interface 22 are connected, which can complete the rapid connection of multiple energy storage units 1 and significantly improve the assembly efficiency of the energy storage system.

[0073] The first interface 11 and the second interface 22 are plug-in connection structures. For example, if the first interface 11 is the plug side, then the second interface 22 is the socket side; if the first interface 11 is the socket side, then the second interface 22 is the plug side. The two third interfaces 23 are also plug-in connection structures. For example, if one third interface 23 is the plug side, then the other third interface 23 is the socket side. The first interface 11, the second interface 22, and the third interface 23 can all be quick-connect interfaces. By replacing the traditional bolt terminal wiring with quick-connect interfaces, the manual wire stripping and crimping steps can be reduced.

[0074] The pipeline assemblies disclosed herein may include linear components (such as cables, signal lines, optical fibers, etc.) for transmitting energy or signals and tubular components (such as water-cooled pipes, fire extinguishing agent pipes, etc.) for transporting fluids. The power cables, signal lines, and other pipeline assemblies are pre-installed between the second interface 22 and the third interface 23 at the factory, eliminating the need for additional installation upon arrival at the site, enabling a plug-and-play connection.

[0075] The existing wiring between energy storage units requires the installation of cable trenches, cable trays or pipe corridors. When new energy storage units are needed or maintenance is required, it is often necessary to excavate or rewire, which is cumbersome and can easily introduce safety hazards. However, the energy storage system of this application only needs to adjust the number of support devices 2 and connect new support devices 2 to complete the wiring expansion, which can improve the convenience of capacity expansion and maintenance.

[0076] The energy storage system disclosed herein enables rapid connection between multiple energy storage units 1 by mounting energy storage equipment units 1 on a support device 2 including pipeline components 24. During the assembly of the energy storage equipment units 1, there is no need for on-site trenching, cable laying, or terminal wiring, making on-site operation simpler, reducing the footprint, improving the assembly efficiency of energy storage units, enabling rapid deployment, shortening the construction cycle, reducing labor costs, and improving the standardization and reliability of the energy storage system. Furthermore, there is no need for rewiring when the energy storage system is repaired or expanded in the future, which improves the convenience of expansion and maintenance of the energy storage system.

[0077] Optionally, a support device 2 may hold only one energy storage unit 1 or multiple energy storage unit 1s; a support device 2 may hold only one type of energy storage unit 1 or multiple types of energy storage unit 1s; one or more second interfaces 22 and third interfaces 23 may be provided on the support device 2. Optionally, the pipeline assembly 24 may be exposed and directly pressed under the energy storage unit 1, for example, the pipeline assembly 24 may be located between the ground and the energy storage unit 1, or it may be supported or contained by a support bracket or support base, etc.

[0078] In some embodiments, such as Figure 4 As shown, eight energy storage containers 4 and eight supporting devices 2 are set up in a one-to-one correspondence, and eight energy storage converters 3, water-cooled units 5 and fire protection modules 6 are set on another large supporting device 2.

[0079] Alternatively, the eight energy storage converters 3 can be set one-to-one with the support devices 2 of appropriate size. The water-cooled unit 5 and the fire protection module 6 can also be set separately from the energy storage converters 3. For example, the water-cooled unit 5 and the fire protection module 6 can be set on other independent support devices 2 of appropriate size, or the water-cooled unit 5 and the fire protection module 6 can also be built into the energy storage container 4.

[0080] In some embodiments, such as Figure 2 and Figure 3 As shown, the support device 2 also includes:

[0081] The support base 21 is configured to support the energy storage device unit 1. The support base 21 includes a receiving cavity, the pipeline assembly 24 is disposed in the receiving cavity, and the second interface 22 and the third interface 23 are both disposed on the support base 21.

[0082] In this embodiment, the support device 2 serves as both the load-bearing foundation of the energy storage unit 1 and the pipeline connection channel. The pipeline assembly 24 is located inside the support base 21, which can reduce the occupied area and avoid additional space requirements between energy storage units. The pipeline assembly 24 is located inside the receiving cavity, which allows the support base 21 to protect the internal pipeline assembly 24 and extend the service life of the pipeline assembly 24.

[0083] Optionally, the supporting base 21 can be any supporting structure with a receiving cavity, such as a square hollow steel pipe.

[0084] In some embodiments, both the energy storage device unit 1 and the supporting device 2 are provided in multiple ways. The multiple energy storage device units 1 are disposed on the multiple supporting devices 2 in a one-to-one correspondence. The multiple energy storage device units 1 are arranged along a first direction x and / or the multiple energy storage device units are arranged along a second direction y, the second direction y being relative to the first direction x.

[0085] During the installation of the energy storage system, multiple support devices 2 are first connected and placed on the ground through the third interface 23. Then, multiple energy storage containers 4 are hoisted and placed on the multiple support devices 2 one by one. At the same time as placement, the first interface 11 and the second interface 22 are connected, which can complete the rapid connection of multiple energy storage containers 4 and significantly improve the assembly efficiency of the energy storage system.

[0086] In this embodiment, the energy storage device unit 1 and the supporting device 2 are arranged in a one-to-one correspondence. Connecting a new supporting device 2 can add an energy storage device unit 1, which can improve the convenience of expanding the energy storage system. Multiple energy storage device units 1 are arranged along the first direction x and / or the second direction y, with a neat and compact layout, which can reduce the space occupation of the energy storage system.

[0087] In some embodiments, such as Figures 1 to 3 As shown, the third interface 23 is connected to the third interface 23 of the adjacent support device 2 along the first direction x, and / or the third interface 23 is connected to the third interface of the adjacent support device 2 along the second direction y.

[0088] The supporting device 2 in this embodiment can be extended bidirectionally in the first direction x and the second direction y, which can improve the flexibility of the layout of the energy storage device unit 1; the third interface 23 is used for connection regardless of whether it is extended along the first direction x or the second direction y, which can improve the standardization of the interface and improve the connection efficiency.

[0089] In some embodiments, the pipeline assembly 24 includes at least one of a power line, a communication line, a coolant line, and a fire extinguishing agent line.

[0090] The quick-connect interface integrates at least one of the following: power connection, signal / communication interface, coolant pipeline, and fire extinguishing agent pipeline. After the first interface 11 and the second interface 22 are connected, or after the two third interfaces 23 are connected, the power line, communication line, coolant pipeline, and fire extinguishing agent pipeline are synchronously integrated and connected. This allows the energy storage unit to complete multiple electrical, signal, cooling, and fire protection connections on-site with just a plug-in connection. This reduces the need for multiple pipelines to be connected separately and further improves the assembly efficiency of the energy storage unit.

[0091] In some embodiments, the power lines include DC lines and AC lines, and the DC lines, AC lines, and communication lines inside the housing cavity are arranged in separate zones. For example, the DC lines, AC lines, and communication lines may be located in different housing channels.

[0092] The DC line is used to transmit high-power DC current from the battery clusters to the energy storage converter 3 (PCS), the AC line is used when AC grid connection or auxiliary AC power supply is required, and the communication line is used for monitoring and communication with the battery management system (BMS / EMS), including temperature control signals, status detection signals, etc. All the aforementioned components included in the energy storage unit 1 can be communicatively connected to the battery management system (BMS / EMS) through the pipeline assembly 24.

[0093] Optionally, the communication line can interact with the battery management system via various communication protocols such as CAN bus, Ethernet, and RS485 to realize real-time monitoring and management of the energy storage system's operating status, ensuring that the energy storage system operates in a safe and stable state.

[0094] The partitioning of DC, AC, and communication lines in this embodiment ensures that cables with different functions do not interfere with each other, avoids electromagnetic coupling and signal interference, and facilitates later operation, maintenance, and repair.

[0095] In some embodiments,

[0096] The first interface 11 and the second interface 22 are connected via a first connecting guide mechanism; and / or

[0097] The two third interfaces 23 are connected via a second connection guide mechanism.

[0098] The first connecting guide mechanism and the second connecting guide mechanism can be the same or different.

[0099] This embodiment, by setting a first connection guide mechanism and a second connection guide mechanism, can ensure accurate alignment of the plug side and the socket side, thereby improving the accuracy of quick-connect connection between the first interface 11 and the second interface 22 and / or the two third interfaces 23.

[0100] In some embodiments,

[0101] The first interface 11 and the second interface 22 are locked by the first locking mechanism; and / or

[0102] The two third interfaces 23 are locked by the second locking mechanism.

[0103] The first locking mechanism and the second locking mechanism can be the same or different. The first locking mechanism and the second locking mechanism can securely fix the plug and socket through mechanical structures, such as handle-type latches, rotary buckles, hydraulic / electric locking structures, etc., to prevent the interfaces from loosening due to vibration or external force.

[0104] This embodiment, by setting a first locking mechanism and a second locking mechanism, can improve the connection stability between interfaces, prevent the interfaces from loosening due to vibration or external force in a vibration environment, and avoid affecting the stable transmission of power, signals, etc.

[0105] In some embodiments, in addition to the primary locking of the first and second locking mechanisms, a secondary mechanical locking structure, such as a safety pin or a positioning pin, is provided to further prevent the interface from loosening under vibration. For high-current, large-volume energy storage device unit connection applications, a hybrid design combining a wedge-shaped locking structure or bolt clamping with a positioning pin can further improve the stability and safety of the connection.

[0106] In some embodiments,

[0107] The power ports of the first interface 11 and the second interface 22 adopt a pin-and-socket structure, and the contact resistance between the first interface 11 and the second interface 22 is less than a preset value; and / or

[0108] The power ports of the two third interfaces 23 adopt a pin-and-socket structure, and the contact impedance between the two third interfaces 23 is less than a preset value.

[0109] Alternatively, the contact resistance between a set of interfaces can be reduced by optimizing the manufacturing materials of the pin-socket structure, the contact surface materials, or by using elastic clamping or crimping methods.

[0110] The pin-and-socket structure can be manufactured using highly conductive metals, such as copper alloys, CuCr, copper-nickel, or copper plated with silver / gold, to ensure good conductivity even under high current conditions. The contact surfaces of the pin-and-socket structure are typically thickly plated with silver, copper, or nickel to effectively reduce contact resistance, minimize the possibility of oxidation, and improve the long-term reliability of the connection.

[0111] In the power port or electrical contact part, a pin-and-socket structure is adopted. After a set of interfaces are plugged in, the low-impedance contact of high current transmission can be ensured by elastic clamping or crimping, thus ensuring the reliability and safety of power transmission.

[0112] In some embodiments, the energy storage system further includes:

[0113] A first connection status detection mechanism is configured to detect the connection status between a first interface 11 and a second interface 22; and / or

[0114] The second connection status detection mechanism is configured to detect the connection status between the two third interfaces 23.

[0115] The first and second connection status detection mechanisms can communicate with the battery management system (BMS). For example, the energy storage system is only allowed to operate after a contact signal or a connection signal is fed back to the battery management system, thereby ensuring that the energy storage system operates only under safe conditions.

[0116] The first connection status detection mechanism and the second connection status detection mechanism can be the same or different. The connection status detection mechanism may include a contact resistance detection device or a temperature sensing device, etc. The connection status between the interfaces may include connected, connection failed, or pending connection, etc.

[0117] This embodiment, by setting up a connection status detection mechanism, can ensure a stable connection between interfaces, avoid potential safety hazards such as poor contact or incomplete contact during the interface connection process, and improve the safety of the energy storage system.

[0118] In some embodiments, the battery management system only allows power to be connected after both the contact-in signal and the lock-up-ready signal are simultaneously fed back to the battery management system, thereby ensuring the safety of the energy storage system.

[0119] In some embodiments, the energy storage system further includes:

[0120] The first connection status indicator is configured to emit at least one of sound, light, and electrical signals based on the detection result of the first connection status detection mechanism; and / or

[0121] The second connection status indicator is configured to emit at least one of sound, light, and electrical signals based on the detection result of the second connection status detection mechanism.

[0122] The first connection status indicator and the second connection status indicator can be the same or different. The connection status indicator may include indicator lights, which can display different colors according to the connection status between the interfaces (such as connected, connection failed, or pending connection).

[0123] This embodiment provides operators with sufficient prompts by setting connection status indicators, ensuring stable connections between interfaces, avoiding potential safety hazards such as poor or incomplete contact during interface connection, and improving the safety of the energy storage system.

[0124] During the research process, the inventors also discovered that the existing cable connection methods between energy storage device units 1 are mostly bolted. During the operation and maintenance of the energy storage system, the bolts are easily affected by environmental factors such as dust or rainwater, which leads to a decrease in reliability.

[0125] To address the aforementioned issues, in some embodiments, a sealed connection is formed between the housing of the first interface 11 and the housing of the second interface 22; and / or a sealed connection is formed between the housings of the two third interfaces 23.

[0126] The interface housing can be made of engineering plastics (such as PA66GF, PBT, etc.) or aluminum alloy to meet the mechanical strength and protection requirements in different environments. The mating surfaces of the interface housing can achieve an IP65 or IP67 rating seal using O-rings or rubber gaskets to adapt to outdoor or humid environments.

[0127] This embodiment forms a sealed connection between the outer shells of the two side interfaces, which can prevent power transmission or communication transmission from being affected by dust or rain, meet the usage requirements of energy storage systems in outdoor or humid environments, and improve the reliability and security of the connection.

[0128] In some embodiments, the connection direction and connection method between the first interface 11 and the second interface 22 are unique; and / or the connection direction and connection method between the two third interfaces 23 are unique.

[0129] Different functional ports can be designed with mechanical keying in terms of shape, size, color, or coding to ensure that the plug side and the socket side can only be connected in the correct direction and manner.

[0130] The connection direction and connection method between the interfaces in this embodiment are unique, and it supports a physical foolproof design, which can avoid mis-insertion and improve the reliability and security of the connection.

[0131] In some embodiments,

[0132] The first interface 11 is the plug side, and the second interface 22 is the socket side. The first interface 11 is provided with a first arc-extinguishing groove, which is configured to introduce and eliminate an electric arc at the moment of insertion or removal; and / or

[0133] One of the two third interfaces 23 is the plug side, and the other third interface 23 is the socket side. The third interface 23 on the plug side is provided with a second arc-extinguishing groove, which is configured to introduce and eliminate the electric arc at the moment of plugging and unplugging.

[0134] Electric arcing may occur during insertion and removal. Therefore, a built-in arc-extinguishing chamber or an oil / gas / ceramic insulating isolation zone is designed. This, combined with the battery management system, performs a pre-disconnection operation before disconnection, reducing the risk of arcing damage to equipment and personnel. The first and second arc-extinguishing chambers can be the same or different. The arc-extinguishing chambers can be small, such as ceramic walls or air gaps.

[0135] This embodiment, by setting an arc-extinguishing groove, can introduce the electric arc generated at the moment of insertion or removal into the ceramic wall or air gap to extinguish the arc, which can effectively reduce the damage of electric arc to equipment and personnel and improve the safety of energy storage system.

[0136] In high-voltage applications (such as DC 800V~1500V), creepage distances and air gaps are strictly designed, and reinforced insulation materials and isolation baffles are used. If necessary, ceramic or high-voltage resin bushings are used to ensure the electrical safety of the system.

[0137] Before performing insertion or removal operations, the battery management system will first disconnect the main contactor, close the discharge circuit, and activate the bypass load or pre-charge circuit to ensure that no high-energy current flows during insertion or removal, thereby improving the operational safety of the energy storage system.

[0138] In some embodiments, such as Figure 2 As shown, the support substrate 21 includes:

[0139] The first supporting segment 211 and the second supporting segment 212 both extend along a first direction x, and the first supporting segment 211 and the second supporting segment 212 are spaced apart along a second direction y, the second direction y intersecting the first direction x; and

[0140] The third support section 213 and the fourth support section 214 both extend along the second direction y and are both connected between the first support section 211 and the second support section 212. The third support section 213 and the fourth support section 214 are spaced apart along the first direction x.

[0141] Among them, the energy storage unit 1 is located on the first support section 211, the second support section 212, the third support section 213 and the fourth support section 214.

[0142] Optionally, the second direction y is perpendicular to the first direction x, and the third direction z is perpendicular to the first direction x and the second direction y. The first direction x and the second direction y can be directions in the horizontal plane, and the third direction z can be a height direction.

[0143] In this embodiment, the support base 21 is composed of four support sections forming a structurally stable quadrilateral support frame, which can effectively avoid local stress concentration and enable the support base 21 to uniformly support the energy storage device unit 1, thereby improving the stability of the energy storage system. The segmented structure of the support base 21 facilitates transportation and assembly, and can improve the applicability of the project.

[0144] In existing technologies, there is a lack of a unified, fast, and safe electrical interface between adjacent energy storage units, resulting in low connection efficiency and risks such as misconnection and poor contact. In some embodiments, the first interface 11, the second interface 22, and the two third interfaces 23 all adopt the same plug and socket structure, which can improve the standardization of the interfaces.

[0145] In some embodiments, such as Figure 4 and Figure 5 As shown,

[0146] Pipeline assembly 24 includes coolant piping; energy storage unit 1 includes energy storage container 4 and water-cooled unit 5, the water-cooled unit 5 being mounted on support device 2 and connected to coolant piping within support device 2; and / or

[0147] The pipeline assembly 24 includes fire extinguishing agent pipelines, and the energy storage unit 1 includes an energy storage container 4 and a fire protection module 6. The fire protection module 6 is located on the support device 2 and connected to the fire extinguishing agent pipelines inside the support device 2.

[0148] The energy storage system of this embodiment, with water-cooled units 5 and / or fire-fighting modules 6 mounted on the support device 2 of the built-in pipeline assembly 24, enables rapid connection of multiple energy storage containers 4, multiple energy storage converters 3, water-cooled units 5 and fire-fighting modules 6. During the assembly of energy storage containers 4, energy storage converters 3, water-cooled units 5 and fire-fighting modules 6, there is no need to dig trenches on site, making on-site operation simpler, improving the assembly efficiency of the energy storage system, enabling rapid deployment, and improving the standardization and reliability of the energy storage system.

[0149] Compared to the existing technology where the water-cooled unit 5 and the fire-fighting module 6 are located inside the energy storage container 4, in this embodiment the water-cooled unit 5 and the fire-fighting module 6 are located outside the energy storage container 4, which can increase the internal space of the energy storage container 4, increase the number of batteries that can be stored, and thus increase the energy storage capacity of the energy storage container 4.

[0150] Optionally, a water-cooled unit 5 can be connected to one or more energy storage containers 4 via coolant piping, and a fire-fighting module 6 can also be connected to one or more energy storage containers 4 via fire extinguishing agent piping.

[0151] In some embodiments, such as Figure 5 As shown, the energy storage unit 1 also includes a medium-voltage transformer 7 (MVT), a ring main unit 8 (RMU), and an auxiliary transformer 9. The medium-voltage transformer 7, the ring main unit 8, and the auxiliary transformer 9 can all be installed on the support device 2 and are electrically and / or communicatively connected to the support device 2, which can further improve the assembly efficiency of the energy storage system.

[0152] The DC power output from the energy storage container 4 is converted into low-voltage AC power by the energy storage converter 3. The medium-voltage transformer 7 converts the low-voltage AC power into high-voltage AC power to supply the power grid. The ring main unit 8 is connected between the medium-voltage transformer 7 and the power grid, and can play the role of control switch and protection.

[0153] The energy storage converter 3 also has a connection port connected to the auxiliary transformer 9. The auxiliary transformer 9 can further reduce the voltage of the output low-voltage AC power to supply power to the power-demanding components within the energy storage system, thus playing a role in step-down power supply. For example, the auxiliary transformer 9 can be connected between the energy storage converter 3 and the battery management system.

[0154] Optionally, similar to the arrangement of the eight energy storage converters 3, water-cooled units 5 and fire protection modules 6 in the above embodiments, the medium-voltage transformer 7, ring main unit 8 and auxiliary transformer 9 can be installed on a large support device 2, or they can be installed one-to-one with multiple support devices 2 of suitable size.

[0155] Alternatively, since the medium-voltage transformer 7 (MVT), ring main unit 8 (RMU) and auxiliary transformer 9 are highly integrated and have simple wiring, and do not involve subsequent maintenance such as capacity expansion, they can be connected using existing technology instead of being installed on the support device 2.

[0156] In some embodiments, such as Figure 4 As shown, multiple energy storage containers 4 and multiple energy storage converters 3 are electrically connected one-to-one through pipeline assemblies 24. At this time, the number of third interfaces 23 between adjacent support devices 2 can be one, two, or four, etc.

[0157] In some specific embodiments, the first interface 11 is a quick-connect male interface, and the second interface 22 is a quick-connect female interface. During field operation, when the energy storage container 4 is hoisted into place and placed on the support device 2, the male and female interfaces automatically engage with the aid of gravity, positioning structure, and connecting guide mechanism, thereby achieving electrical, communication, and coolant connections. The interfaces adopt a foolproof, waterproof, dustproof, and vibration-resistant design to ensure reliability and safety during long-term operation in complex power plant environments. Each support device 2 can be regarded as a standardized cable module. During field construction, simply assembling the support devices 2 sequentially will automatically complete the connection of the electrical, communication, and coolant connections for the entire row of energy storage containers 4. Once all the interfaces between the energy storage containers 4 and the support devices 2, and between the support devices 2 and each other, are completed, all pipelines eventually converge into the support device 2 on the side closest to the energy storage converter 3. The support device 2 is connected to the support devices 2 that support the energy storage converter 3, the water-cooled unit 5, and the fire protection module 6. This allows the energy storage containers 4 to be directly connected to the energy storage converter 3, the high-voltage converter system, the water cooling system, or the fire protection system, achieving unified energy output for the entire group of energy storage containers 4 and avoiding the complexity and footprint of setting up additional combiner boxes in traditional solutions.

[0158] In some embodiments, exemplary operational steps of the installation and disassembly process include:

[0159] (1) Align the plug with the guide groove on the side of the socket on site (guide pin / conical guide sleeve automatically corrects the position).

[0160] (2) Insert to the position limit, and the limit switch triggers the "in position" signal;

[0161] (3) Perform mechanical locking (rotate or fasten the handle), and the locking switch triggers the "locked" signal;

[0162] (4) The battery management system (BMS / PCS) detects the lock-up signal and executes the pre-charge procedure (if applicable). Once the pre-charge is complete, the voltage difference is detected to allow the main contactor to close.

[0163] (5) Electrical readiness is completed, and the energy storage system enters normal operation;

[0164] (6) The disassembly sequence is as follows: remote or local command to cut off power → release the main contactor → discharge / current interruption completed → release the mechanical lock → unplug the plug.

[0165] The energy storage system provided in this disclosure has been described in detail above. Specific embodiments have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications to this disclosure without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this disclosure.

Claims

1. An energy storage system, characterized by, The energy storage system comprises an energy storage device unit (1) and a supporting device (2), the energy storage device unit (1) is arranged on the supporting device (2), the energy storage device unit (1) is provided with a first interface (11), the supporting device (2) comprises: a second interface (22) arranged on one side close to the energy storage device unit (1), the second interface (22) is connected to the first interface (11); a third interface (23) connected to the third interface (23) of the adjacent supporting device (2); and a pipeline assembly (24) connected between the second interface (22) and the third interface (23).

2. The energy storage system of claim 1, wherein, The supporting device (2) further comprises: a supporting base body (21) configured to support the energy storage device unit (1), the supporting base body (21) comprises a containing cavity, the pipeline assembly (24) is arranged in the containing cavity, and the second interface (22) and the third interface (23) are arranged on the supporting base body (21).

3. The energy storage system of claim 1, wherein, The pipeline assembly (24) comprises at least one of a power line, a communication line, a cooling liquid pipeline and a fire extinguishing agent pipeline.

4. The energy storage system of claim 3, wherein, The power line comprises a direct current line and an alternating current line, and the direct current line, the alternating current line and the communication line are arranged in zones.

5. The energy storage system according to claim 1, wherein the first interface (11) and the second interface (22) are connected through a first connection guide mechanism; and / or two third interfaces (23) are connected through a second connection guide mechanism.

6. The energy storage system according to claim 1, wherein the first interface (11) and the second interface (22) are locked through a first locking mechanism; and / or two third interfaces (23) are locked through a second locking mechanism.

7. The energy storage system according to claim 1, wherein power ports of the first interface (11) and the second interface (22) adopt a plug-in structure, and a contact resistance between the first interface (11) and the second interface (22) is less than a preset value; and / or power ports of two third interfaces (23) adopt a plug-in structure, and a contact resistance between the two third interfaces (23) is less than a preset value.

8. The energy storage system of claim 1, wherein, Further comprising: a first connection state detection mechanism configured to detect a connection state between the first interface (11) and the second interface (22); and / or a second connection state detection mechanism configured to detect a connection state between two third interfaces (23).

9. The energy storage system of claim 8, wherein, Further comprising: a first connection state indicating member configured to emit at least one of an acoustic, optical and electrical signal according to a detection result of the first connection state detection mechanism; and / or a second connection state indicating member configured to emit at least one of an acoustic, optical and electrical signal according to a detection result of the second connection state detection mechanism.

10. The energy storage system of claim 1, wherein, Sealed connections are formed between a shell of the first interface (11) and a shell of the second interface (22); and / or sealed connections are formed between shells of two third interfaces (23).

11. The energy storage system of claim 1, wherein, The connection direction and connection mode between the first interface (11) and the second interface (22) are unique; and / or the connection direction and connection mode between the two third interfaces (23) are unique.

12. The energy storage system of claim 1, wherein, The first interface (11) is a plug side, the second interface (22) is a socket side, the first interface (11) is provided with a first arc extinguishing groove, and the first arc extinguishing groove is configured to introduce and eliminate an electric arc at the moment of plug-in; and / or One of the two third interfaces (23) is a plug side, and the other third interface (23) is a socket side, the third interface (23) on the plug side is provided with a second arc extinguishing groove, and the second arc extinguishing groove is configured to introduce and eliminate an electric arc at the moment of plug-in.

13. The energy storage system of any one of claims 1 or 3-12, wherein, The supporting device (2) further comprises a supporting base body (21) configured to support the energy storage equipment unit (1), the supporting base body (21) comprises a containing cavity, the pipeline assembly (24) is arranged in the containing cavity, the second interface (22) and the third interface (23) are arranged on the supporting base body (21), and the supporting base body (21) comprises: A first supporting section (211) and a second supporting section (212) both extending along a first direction (x), the first supporting section (211) and the second supporting section (212) are arranged at intervals along a second direction (y), the second direction (y) intersects the first direction (x), and the energy storage equipment unit (1) is located on the first supporting section (211) and the second supporting section (212).

14. The energy storage system of claim 13, wherein, The supporting base body (21) further comprises: A third supporting section (213) and a fourth supporting section (214) both extending along the second direction (y) and both connected between the first supporting section (211) and the second supporting section (212), the third supporting section (213) and the fourth supporting section (214) are arranged at intervals along the first direction (x), and the energy storage equipment unit (1) is located on the first supporting section (211), the second supporting section (212), the third supporting section (213) and the fourth supporting section (214) at the same time.

15. The energy storage system of any one of claims 1-12, wherein, The energy storage equipment unit (1) and the supporting device (2) are both provided with a plurality of energy storage equipment units (1) and a plurality of supporting devices (2), the plurality of energy storage equipment units (1) are arranged on the plurality of supporting devices (2) in a one-to-one correspondence, the plurality of energy storage equipment units (1) are arranged along a first direction (x), and / or the plurality of energy storage equipment units (1) are arranged along a second direction (y), and the second direction (y) intersects the first direction (x).

16. The energy storage system of claim 15, wherein, The third interface (23) is connected to the third interface (23) of an adjacent supporting device (2) along the first direction (x), and / or the third interface (23) is connected to the third interface (23) of an adjacent supporting device (2) along the second direction (y).

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