Alternating current and direct current integrated energy storage container
By integrating PCS devices and water-cooled units into the energy storage container, the problems of space occupation and cable costs of PCS devices are solved, enabling more efficient management and monitoring.
Patent Information
- Application Number
- CN202520145367.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In existing energy storage containers, the PCS device is placed separately in the pressurized integrated compartment, which occupies extra space and increases cable costs, and has low management and monitoring efficiency.
Integrating the PCS device inside the energy storage container and combining it with the battery pack and water-cooled unit reduces cable length and improves management and monitoring efficiency.
This solves the problem of PCS devices occupying extra space, reduces cable costs, and improves the management and monitoring efficiency of energy storage systems.
Smart Images
Figure CN223898474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage technology, and in particular to an AC / DC integrated energy storage container. Background Technology
[0002] Currently, most mainstream energy storage containers utilize electrochemical energy storage methods. Electrochemical energy storage primarily converts electrical energy into chemical energy. The electricity stored in the batteries is mainly direct current (DC), used for DC output. A cable-connected booster compartment (containing a power control system, PCS) converts the DC to alternating current (AC) and boosts the voltage to a high enough level for grid connection. The charging process is the reverse. In this case, the PCS device is often housed separately in a separate container from the battery pack. This not only requires a dedicated container, occupying additional space, but also necessitates more cabling for wiring, thus increasing costs.
[0003] In view of the above, this utility model is hereby proposed. Utility Model Content
[0004] To solve one of the above-mentioned technical problems, this utility model provides an AC / DC integrated energy storage container.
[0005] The present invention adopts the following technical solution:
[0006] An AC / DC integrated energy storage container, comprising:
[0007] The housing has a main cavity;
[0008] Multiple battery packs, each of which is disposed in the main cavity;
[0009] PCS device, wherein the PCS device is disposed in the main cavity and is electrically connected to the battery pack;
[0010] A power distribution combiner cabinet is disposed at one end of the enclosure along its length, and the PCS device is electrically connected to the power distribution combiner cabinet;
[0011] A water-cooled unit is located at one end of the casing along its length. The water-cooled unit has liquid cooling pipes that are connected to the battery pack and the PCS device.
[0012] Optionally, the AC / DC integrated energy storage container includes multiple battery packs and multiple PCS devices, each PCS device being electrically connected to one or more battery packs.
[0013] Optionally, the AC / DC integrated energy storage container includes multiple clusters, each of which is disposed within the main cavity;
[0014] Each cluster rack has multiple installation spaces;
[0015] In each cluster of racks, some installation spaces are used to house battery packs, while others are used to house PCS devices.
[0016] Optionally, in each of the cluster racks, the lowest installation space is provided with a PCS device, and the installation spaces above the lowest installation space are provided with battery packs.
[0017] Optionally, the box body is provided with a first cavity, a second cavity and a third cavity at one end along its length, the second cavity is located on top of the third cavity, and the first cavity is located on the same side of the second cavity and the third cavity;
[0018] The power distribution junction box includes a power distribution cabinet and a junction box. The water-cooled unit is located in the first cavity, the power distribution cabinet is located in the second cavity, and the junction box is located in the third cavity.
[0019] Optionally, the AC / DC integrated energy storage container includes a fire-fighting gas container, which is disposed in the second cavity and connected to a fire-fighting pipeline that extends to the battery pack and / or the main cavity.
[0020] Optionally, the energy storage container may include a UPS module;
[0021] The UPS module is disposed in the second cavity and is located at the top of the power distribution cabinet. The UPS module is suspended from the top wall of the second cavity.
[0022] Optionally, the AC / DC integrated energy storage container includes a door connected to the container body for opening or closing the second and third cavities;
[0023] An air conditioner is installed on the door, and the air outlet of the air conditioner faces the second cavity and / or the third cavity.
[0024] Optionally, the second cavity and the third cavity are separated by a partition;
[0025] The partition is provided with ventilation holes.
[0026] Optionally, the AC / DC integrated energy storage container includes fire-fighting water pipes;
[0027] The fire water pipe is located at the top of the box and extends along the box. Multiple water outlets are provided on the fire water pipe, and the water outlets are arranged sequentially at intervals along the length of the fire water pipe.
[0028] By adopting the above technical solution, this application has the following beneficial effects:
[0029] This application effectively solves the problem of the PCS occupying extra space when placed in the pressurized compartment by integrating the PCS device inside the energy storage container. It reduces the additional costs caused by the floor space, shortens the cable length from the battery pack to the PCS, reduces cable costs, and the highly integrated design improves the management and monitoring efficiency of the energy storage system.
[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:
[0032] Figure 1 This is a schematic diagram of the internal structure of an energy storage container provided in an embodiment of this application;
[0033] Figure 2 A schematic diagram of the structure of the end door of the energy storage container provided in the embodiment of this application in the open state;
[0034] Figure 3 This is a schematic diagram of the internal partial structure of the energy storage container provided in an embodiment of this application.
[0035] In the diagram: 1. Cabinet; 3. Battery pack; 4. PCS device; 5. Water-cooled unit; 6. Distribution cabinet; 7. Combiner cabinet; 8. Fire-fighting gas container; 9. UPS module; 10. Door; 11. Air conditioner; 12. Partition; 13. Fire-fighting water pipe; 14. Monitoring device; 15. Cabin-level detector; 16. Exhaust vent; 17. Pressure relief port.
[0036] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] like Figures 1 to 3 As shown in the figure, this application provides an AC / DC integrated energy storage container, including: a container body 1, a PCS device 4, a power distribution combiner cabinet, and multiple battery packs 3. The container body 1 has a main cavity, and each of the battery packs 3 is disposed in the main cavity. The PCS device 4 is disposed in the main cavity and is electrically connected to the battery packs 3. The power distribution combiner cabinet is disposed at one end of the container body 1 along the length direction, and the PCS device 4 is electrically connected to the power distribution combiner cabinet. A water-cooled unit 5 is disposed at one end of the container body 1 along the length direction, and the water-cooled unit 5 has liquid cooling pipes, which are connected to the battery packs 3 and the PCS device 4.
[0041] The power distribution junction box is equipped with a transfer copper busbar, which is used to transfer external transformers to enable the energy storage container to be connected to the power grid.
[0042] This application effectively solves the problem of the PCS device 4 occupying extra space when placed in the pressurized compartment by integrating the PCS device 4 inside the energy storage container. This reduces the additional costs caused by the floor space, shortens the cable length from the battery pack 3 to the PCS device 4, reduces cable costs, and the highly integrated design improves the management and monitoring efficiency of the energy storage system.
[0043] The water-cooled unit 5, also known as the liquid-cooled unit, is a 60kW liquid-cooled unit in the energy storage container of this application. It is equipped with a dual-cycle liquid-cooling system for the PACK (battery pack 3) and PCS unit 4, with separate piping designed to ensure that both the PACK and PCS are at their optimal operating temperatures. The liquid-cooling system injects coolant into each battery pack and PCS unit to ensure that the relevant cells and electronic components are operating stably and optimally. For example, both the battery pack 3 and PCS unit 4 are equipped with water-cooled plates. The liquid-cooling piping of the water-cooled unit 5 is connected to the water-cooled plates in the battery pack 3 and PCS unit 4 to exchange heat with the internal structure of the battery pack 3 and PCS unit 4, achieving the purpose of cooling.
[0044] In some possible implementations, the AC / DC integrated energy storage container includes multiple battery packs 3 and multiple PCS devices 4, each PCS device 4 being electrically connected to one or more battery packs 3. The PCS devices 4 and the corresponding multiple battery packs 3 are arranged close together, reducing the length of cables used, lowering cable costs, and making full use of the internal space of the container 1.
[0045] In some possible implementations, the AC / DC integrated energy storage container includes multiple clusters, each cluster housed within the main cavity. Each cluster has multiple mounting spaces, with some spaces housing battery packs 3 and others housing PCS devices 4. The PCS devices 4 are mounted on the clusters, making full use of the internal space. Each cluster may include multiple support plates, spaced sequentially along its height, with each battery pack 3 and PCS device 4 supported on its respective support plate.
[0046] In some possible implementations, in each of the cluster racks, the lowest mounting space houses the PCS device 4, and the mounting spaces above the lowest mounting space house the battery packs 3. Each battery pack 3 on the same cluster rack has a downward lead for connection to the PCS device 4.
[0047] The cells inside the entire battery pack 3 are connected in parallel or series via inter-pack cables to the DC interface of the PCS device 4 located below the pack rack. The PCS device 4 converts the DC power to AC power, which is then transferred at the transfer copper busbar in the distribution combiner cabinet. This transfer copper busbar connects to an external transformer, which performs a voltage boosting operation for grid connection.
[0048] It should be noted that the PCS device 4 can also be installed in other installation spaces of the cluster rack. The PCS devices 4 on each cluster rack can be installed at the same height and have the same wiring method, which helps to improve wiring efficiency.
[0049] In some possible implementations, the enclosure 1 has a first cavity, a second cavity, and a third cavity at one end along its length. The second cavity is located on top of the third cavity, and the first cavity is located on the same side of the second and third cavities. The power distribution cabinet includes a power distribution cabinet 6 and a junction cabinet 7. The water-cooled unit 5 is located in the first cavity, the power distribution cabinet 6 is located in the second cavity, and the junction cabinet 7 is located in the third cavity. The first, second, and third cavities are all isolated from the main cavity.
[0050] The AC / DC integrated energy storage container includes a fire-fighting gas container 8, which is located in the second cavity and connected to a fire-fighting pipeline extending to the battery pack 3 and / or the main cavity. The fire-fighting gas container 8 can be a gas cylinder containing perfluorohexanone. The fire-fighting pipeline extends along the top of the main cavity of the container 1 and can include pack-level and compartment-level fire-fighting pipelines. The pack-level fire-fighting pipeline connects to each battery pack 3 and injects perfluorohexanone gas into the battery pack 3 to achieve a cooling and fire-extinguishing effect. The compartment-level fire-fighting pipeline extends through the top of each cluster rack and is equipped with nozzles.
[0051] In some possible implementations, the energy storage container includes a UPS module 9, which is disposed in the second cavity and located on top of the power distribution cabinet 6. The UPS module 9 is suspended from the top wall of the second cavity. The UPS module 9 is used to supply power to some equipment inside the energy storage container in the event of a power outage, preventing the energy storage container from shutting down due to power failure. The structure and principle of the UPS are existing technologies; this application only improves its placement location and does not modify its structure and principle. Therefore, its structure and principle will not be described in detail here.
[0052] In some possible implementations, the AC / DC integrated energy storage container also includes a door 10 connected to the container 1 for opening or closing the second and third cavities. An air conditioner 11 is installed on the door 10, with the air outlet of the air conditioner 11 facing the second and / or third cavities, for cooling the power distribution cabinet 6 and the combiner cabinet 7.
[0053] The second cavity and the third cavity are separated by a partition 12, which is horizontally arranged and has ventilation holes. The cold air blown out by the air conditioner 11 can flow between the second cavity and the third cavity to simultaneously regulate the temperature of the two cavities.
[0054] In some possible implementations, the AC / DC integrated energy storage container includes a fire water pipe 13 located at the top of the container body 1 and extending along the container body 1. The fire water pipe 13 is provided with multiple water outlets, and the water outlets are arranged sequentially at intervals along the length direction of the fire water pipe 13.
[0055] Multiple partition walls can be installed within the main cavity, dividing it into multiple compartments, each containing several fire racks. Fire water pipes 13 can extend along the length of the enclosure 1, passing through each compartment sequentially, with corresponding spray nozzles for each compartment. The compartment-level fire water pipes 13 ensure that the fire serves as the last line of defense during firefighting.
[0056] In some possible implementations, each battery pack 3 is equipped with a three-in-one detector to detect whether a fire has occurred in the battery pack 3. Based on the detection, the detector can control the opening of the pack-level fire suppression pipeline to inject fire suppression gas into the corresponding battery pack 3. The compartment-level fire suppression pipeline can extend through each compartment, and each compartment is equipped with a jet nozzle (or spray nozzle) to inject fire suppression gas into the corresponding compartment. Each compartment can be equipped with a compartment-level detector 15, such as a five-in-one detector, to detect the temperature, smoke, hydrogen, carbon monoxide, and toxic gases within the compartment. Based on the detection results, it can be determined whether to control the opening of the compartment-level fire suppression pipeline to perform fire suppression tasks.
[0057] In this embodiment, two exhaust vents 16, one pressure relief vent 17, and one air intake fan can be provided on the container 1. An exhaust fan is installed on the exhaust vents 16, which can exchange the air inside the container once per minute. A pressure relief valve is installed on the pressure relief vent 17, which can release gas when the air pressure inside the main cavity is too high. The air intake fan can be used to blow outside air into the main cavity. A monitoring device 14 can also be installed inside the main cavity to monitor the status inside the main cavity. The monitoring device 14 may include a video monitoring device, a sound monitoring device, a temperature monitoring device, etc.
[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An AC / DC integrated energy storage container, characterized in that, include: The housing has a main cavity; Multiple battery packs, each of which is disposed in the main cavity; PCS device, wherein the PCS device is disposed in the main cavity and is electrically connected to the battery pack; A power distribution combiner cabinet is disposed at one end of the enclosure along its length, and the PCS device is electrically connected to the power distribution combiner cabinet; A water-cooled unit is located at one end of the casing along its length. The water-cooled unit has liquid cooling pipes that are connected to the battery pack and the PCS device.
2. The AC / DC integrated energy storage container according to claim 1, characterized in that, It includes a multi-cluster battery pack and multiple PCS devices, each PCS device being electrically connected to one or more cluster battery packs.
3. The AC / DC integrated energy storage container according to claim 2, characterized in that, It includes multiple cluster frames, each of which is disposed within the main cavity; Each cluster rack has multiple installation spaces; In each cluster of racks, some installation spaces are used to house battery packs, while others are used to house PCS devices.
4. The AC / DC integrated energy storage container according to claim 3, characterized in that, In each of the aforementioned cluster racks, the lowest installation space houses the PCS device, and the installation spaces above the lowest installation space house the battery pack.
5. The AC / DC integrated energy storage container according to claim 1, characterized in that, The box body is provided with a first cavity, a second cavity and a third cavity at one end along its length. The second cavity is located on top of the third cavity, and the first cavity is located on the same side of the second cavity and the third cavity. The power distribution junction box includes a power distribution cabinet and a junction box. The water-cooled unit is located in the first cavity, the power distribution cabinet is located in the second cavity, and the junction box is located in the third cavity.
6. The AC / DC integrated energy storage container according to claim 5, characterized in that, It includes a fire-fighting gas container, which is disposed in the second cavity and connected to a fire-fighting pipeline that extends to the battery pack and / or the main cavity.
7. The AC / DC integrated energy storage container according to claim 5, characterized in that, Includes UPS module; The UPS module is disposed in the second cavity and is located at the top of the power distribution cabinet. The UPS module is suspended from the top wall of the second cavity.
8. The AC / DC integrated energy storage container according to claim 5, characterized in that, Includes a door, which is connected to the housing for opening or closing the second and third cavities; An air conditioner is installed on the door, and the air outlet of the air conditioner faces the second cavity and / or the third cavity.
9. The AC / DC integrated energy storage container according to claim 8, characterized in that, The second cavity and the third cavity are separated by a partition; The partition is provided with ventilation holes.
10. The AC / DC integrated energy storage container according to any one of claims 1-9, characterized in that, Including fire hydrants; The fire water pipe is located at the top of the box and extends along the box. Multiple water outlets are provided on the fire water pipe, and the water outlets are arranged sequentially at intervals along the length of the fire water pipe.