Box-type integrated energy storage system

Abstract

This application belongs to the field of energy storage battery technology, specifically relating to a box-type integrated energy storage system. The box-type integrated energy storage system includes: a box housing, a DC battery energy storage module, and an energy storage converter, wherein the DC battery energy storage module is housed within the box housing; the energy storage converter is housed within the box housing and connected to the DC battery energy storage module, and is configured to perform AC-DC power conversion. The box-type integrated energy storage system of this application directly integrates the DC battery energy storage module and the energy storage converter within the box housing, that is, it directly integrates the DC battery energy storage module and the energy storage converter into the same box housing during the design process, thereby avoiding the problem of long installation time caused by the separate deployment of the DC battery energy storage module and the energy storage converter in existing solutions.

Description

Technical Field

[0001] This application belongs to the field of energy storage battery technology, specifically relating to box-type integrated energy storage systems. Background Technology

[0002] In energy storage battery applications, energy storage involves converting alternating current (AC) to direct current (DC) and storing it in the battery, as well as converting the DC stored in the battery back to AC for use. Currently, DC battery energy storage modules and energy storage converters (PCS) are treated as two independent units, requiring separate installation and subsequent joint commissioning in practical applications. This results in a long initial deployment and usage cycle. Utility Model Content

[0003] One objective of this application is to provide a box-type integrated energy storage system that reduces the initial deployment and usage cycle time by integrating the DC battery energy storage module with the energy storage converter.

[0004] According to an embodiment of this application, a first aspect provides a box-type integrated energy storage system, the box-type integrated energy storage system comprising:

[0005] Box;

[0006] A DC battery energy storage module is installed inside the enclosure;

[0007] An energy storage converter is installed inside the enclosure and connected to the DC battery energy storage module. The energy storage converter is configured to perform the mutual conversion between AC and DC power.

[0008] In one embodiment, the box-type integrated energy storage system further includes a liquid cooling module disposed inside the box. The liquid cooling module includes an independent first cooling submodule and a second cooling submodule. The first cooling submodule is in thermal exchange contact with the DC battery energy storage module, and the second cooling submodule is in thermal exchange contact with the energy storage converter.

[0009] In one embodiment, the DC battery energy storage module is provided with a temperature sensing component, which is communicatively connected to the liquid cooling module, and the first cooling submodule is configured to adjust its operation based on the temperature data collected by the temperature sensing component.

[0010] In one embodiment, the DC battery energy storage module includes multiple stacked battery modules, and the first cooling submodule includes a main cooling pipe and multiple independent cooling branch pipes. The main cooling pipe is connected to each of the independent cooling branch pipes through a branching structure, and each of the independent cooling branch pipes forms a heat exchange contact with the corresponding battery module.

[0011] In one embodiment, the energy storage converter is provided with a converter temperature sensing component, which is communicatively connected to the liquid cooling module, and the second cooling submodule is configured to adjust its operation based on the temperature data collected by the converter temperature sensing component.

[0012] In one embodiment, the box-type integrated energy storage system further includes a fire-fighting module, which includes a fire detection unit and a fire extinguishing execution unit; the fire detection unit is electrically connected to the DC battery energy storage module and the energy storage converter and sends a shutdown command; the fire extinguishing execution unit is configured to deliver fire extinguishing agent to the area where the DC battery energy storage module and the energy storage converter are located.

[0013] In one embodiment, the fire detection unit includes a signal acquisition module, which is connected to an audible and visual alarm, a smoke sensor, a temperature sensor, and a combustible gas detector.

[0014] In one embodiment, the fire extinguishing execution unit includes a first fire-fighting pipeline and a fire extinguishing agent storage device, wherein the first fire-fighting pipeline is provided with a plurality of fire extinguishing agent nozzles corresponding to the battery module.

[0015] In one embodiment, the fire-fighting module further includes a second fire-fighting pipeline, which is disposed on the upper side of the DC battery energy storage module, and the second fire-fighting pipeline is provided with multiple sprinkler ports at intervals.

[0016] In one embodiment, the DC battery energy storage module is disposed at one end of the housing, the energy storage converter is disposed at the other end of the housing, and the liquid cooling module is located on the same side as the energy storage converter and arranged side by side with the energy storage converter.

[0017] The box-type integrated energy storage system of this application integrates DC battery energy storage modules and energy storage converters directly within the box. In other words, the DC battery energy storage modules and energy storage converters are directly integrated into the same box during the design process, thereby avoiding the problem of long installation time caused by the separate deployment of DC battery energy storage modules and energy storage converters in existing solutions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a box-type integrated energy storage system in one embodiment of this application;

[0019] Figure 2 This is a side view of a box-type integrated energy storage system according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the liquid cooling module in one embodiment of this application;

[0021] Figure 4This is a structural schematic diagram of a fire protection module in one embodiment of this application.

[0022] Explanation of icon numbers:

[0023] 100. Box body;

[0024] 200. DC battery energy storage module;

[0025] 300. Energy storage converter;

[0026] 400. Liquid cooling module; 410. Main cooling pipe; 420. Branch cooling pipe;

[0027] 500, Fire protection module; 510, First fire protection pipeline; 511, Extinguishing agent nozzle; 520, Extinguishing agent storage device; 530, Second fire protection pipeline. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model.

[0030] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0031] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] As mentioned in the background, in energy storage battery applications, energy storage involves converting alternating current (AC) to direct current (DC) and storing it in the battery, as well as converting the DC stored in the battery back to AC for use. Currently, DC battery energy storage modules and energy storage converters (PCS) are treated as two independent units, requiring separate installation and subsequent joint commissioning in practical applications. This results in a long initial deployment and usage cycle. To better address this issue, the researchers in this application propose a box-type integrated energy storage system that integrates the DC battery energy storage module and the energy storage converter, thereby reducing the initial deployment and usage cycle time.

[0033] like Figure 1 As shown, Figure 1 This is a schematic diagram of a box-type integrated energy storage system according to one embodiment of this application. The box-type integrated energy storage system includes a box 100, a DC battery energy storage module 200, and an energy storage converter 300. The box 100 is used to install the DC battery energy storage module 200 and the energy storage converter 300. In photovoltaic power generation, the energy storage converter 300 converts AC power into DC power for storage in the DC battery energy storage module 200. Simultaneously, the energy storage converter 300 can also convert the DC power in the DC battery energy storage module 200 back into AC power for use. In this embodiment, by pre-integrating the DC battery energy storage module 200 and the energy storage converter 300 within the box 100, when transporting the box-type integrated energy storage system to a designated location, it is not necessary to separately debug the DC battery energy storage module 200 and the energy storage converter 300, thereby reducing the debugging time cost during the initial installation and use of the box-type integrated energy storage system.

[0034] Specifically, the DC battery energy storage module 200 is disposed inside the housing 100; the energy storage converter 300 is disposed inside the housing 100 and connected to the DC battery energy storage module 200, and the energy storage converter 300 is configured to perform the mutual conversion between AC and DC power.

[0035] In this embodiment, by directly integrating the DC battery energy storage module 200 and the energy storage converter 300 within the enclosure 100, that is, by directly integrating the DC battery energy storage module 200 and the energy storage converter 300 within the same enclosure 100 during the design process, it is not necessary to deploy and debug the DC battery energy storage module 200 and the energy storage converter 300 separately during deployment. This avoids the problem of long installation time caused by the separate deployment of the DC battery energy storage module 200 and the energy storage converter 300 in the existing solution.

[0036] In one embodiment, see Figure 1As shown, the box-type integrated energy storage system also includes a liquid cooling module 400, which is disposed inside the box 100. The liquid cooling module 400 includes an independent first cooling sub-module and a second cooling sub-module. The first cooling sub-module is in heat exchange contact with the DC battery energy storage module 200, and the second cooling sub-module is in heat exchange contact with the energy storage converter 300.

[0037] In this embodiment, a liquid cooling module 400 is installed inside the housing 100. The liquid cooling module 400 includes independent first and second cooling sub-modules. The first cooling sub-module has heat exchange contact with the DC battery energy storage module 200, and the second cooling sub-module has heat exchange contact with the energy storage converter 300. The liquid cooling module 400 can provide heat exchange functionality for both the DC battery energy storage module 200 and the energy storage converter 300 simultaneously, thereby effectively solving the heat dissipation problem caused by heat concentration after the integrated design of the DC battery energy storage module 200 and the energy storage converter 300. In addition, the liquid cooling module 400 is integrated inside the housing 100, avoiding the complex operation of separately deploying the liquid cooling module 400 in the independent DC battery energy storage module 200 and the independent energy storage converter 300 in the prior art, thereby reducing the initial deployment time and simplifying the installation process.

[0038] In one embodiment, the DC battery energy storage module 200 is provided with a temperature sensing component, which is communicatively connected to the liquid cooling module 400. The first cooling submodule is configured to adjust its operation based on the temperature data collected by the temperature sensing component.

[0039] In this embodiment, the DC battery energy storage module 200 is equipped with a temperature sensing component, which is communicatively connected to the liquid cooling module 400. The first cooling submodule is configured to adjust its operation based on the temperature data collected by the temperature sensing component. The temperature sensing component enables the DC battery energy storage module 200 to monitor its internal temperature in real time and transmit the temperature data to the liquid cooling module 400. The liquid cooling module 400 adjusts the operating state of the first cooling submodule based on the received temperature data, thereby achieving precise temperature control of the DC battery energy storage module 200. It should be noted that the DC battery energy storage module 200 includes a Battery Management System (BMS), which comprises a Battery Management Unit (BMU), a Battery Cluster Management Unit (BCMU), and a Battery Management System Logic Control Unit (BAMS). The BMU acts as the battery module's data acquisition unit, capable of acquiring data such as the temperature and voltage of individual cells within the battery module, and performing equalization. In this embodiment, the temperature sensor component can be understood as the data acquisition unit within the Battery Management Unit. The Battery Cluster Management Unit is installed inside a high-voltage box, which also contains circuit breakers, contactors, fuses, pre-charge resistors, Hall sensors or shunts, switching power supplies, copper busbars, and other devices, working together with the Battery Cluster Management Unit to protect the battery clusters. The Battery Management System Logic Control Unit is responsible for the overall system's logic control.

[0040] Furthermore, in one embodiment, see [reference] Figure 3 As shown, the DC battery energy storage module 200 includes multiple stacked battery modules. The first cooling submodule includes a main cooling pipe 410 and multiple independent cooling branch pipes 420. The main cooling pipe 410 is connected to each independent cooling branch pipe 420 through a branch structure. Each independent cooling branch pipe 420 forms a heat exchange contact with the corresponding battery module.

[0041] In this embodiment, the DC battery energy storage module 200 includes multiple stacked battery modules. The first cooling submodule includes a main cooling pipe 410 and multiple independent cooling branch pipes 420. The main cooling pipe 410 is connected to the multiple independent cooling branch pipes 420 through a branching structure, and each independent cooling branch pipe 420 forms heat exchange contact with the corresponding battery module. By using a branching structure to connect the main cooling pipe 410 to the multiple independent cooling branch pipes 420, the coolant can be evenly distributed to each battery module, thereby improving cooling efficiency, ensuring that the temperature of each battery module remains balanced, and avoiding battery performance degradation or safety hazards caused by excessively high local temperatures.

[0042] In one embodiment, the energy storage converter 300 is provided with a converter temperature sensing component, which is communicatively connected to the liquid cooling module 400. The second cooling submodule is configured to adjust its operation based on the temperature data collected by the converter temperature sensing component.

[0043] In this embodiment, the energy storage converter 300 is equipped with a converter temperature sensing component, which is communicatively connected to the liquid cooling module 400. The second cooling submodule is configured to adjust its operation based on the temperature data collected by the converter temperature sensing component. The converter temperature sensing component enables the energy storage converter 300 to monitor its internal temperature in real time and transmit the temperature data to the liquid cooling module 400. The liquid cooling module 400 adjusts the operating state of the second cooling submodule based on the received temperature data, thereby achieving precise temperature control of the energy storage converter 300.

[0044] In one embodiment, see Figure 1 As shown, the box-type integrated energy storage system also includes a fire protection module 500, which includes a fire detection unit and a fire extinguishing execution unit. The fire detection unit is electrically connected to the DC battery energy storage module 200 and the energy storage converter 300 and sends a shutdown command. The fire extinguishing execution unit is configured to deliver fire extinguishing agent to the area where the DC battery energy storage module 200 and the energy storage converter 300 are located.

[0045] In this embodiment, the box-type integrated energy storage system includes a fire protection module 500, which comprises a fire detection unit and a fire extinguishing execution unit. The fire detection unit is electrically connected to the DC battery energy storage module 200 and the energy storage converter 300, and sends a shutdown command when abnormal temperature or smoke signals are detected, thereby promptly cutting off the power supply to the energy storage system and preventing the fault from escalating. Based on the detection results of the fire detection unit, the fire extinguishing execution unit automatically releases extinguishing agent in the area where the DC battery energy storage module 200 and the energy storage converter 300 are located to suppress the spread of fire and reduce the temperature. By integrating the fire protection module 500 inside the box 100, the same fire protection system can provide unified fire monitoring and extinguishing functions for the DC battery energy storage module 200 and the energy storage converter 300, avoiding the need for separate fire protection systems for the independently deployed DC battery energy storage module 200 and the energy storage converter 300 in the prior art.

[0046] In one embodiment, the fire detection unit includes a signal acquisition module, which is connected to an audible and visual alarm, a smoke sensor, a temperature sensor, and a combustible gas detector.

[0047] In this embodiment, the fire detection unit includes a signal acquisition module, which is connected to an audible and visual alarm, a smoke sensor, a temperature sensor, and a combustible gas detector. The signal acquisition module can collect environmental parameters within the energy storage system in real time, including smoke concentration, temperature changes, and combustible gas concentration, and transmit the collected signals to the fire detection unit. The fire detection unit analyzes the received signals, and when an abnormality is detected, it triggers the audible and visual alarm and simultaneously sends shutdown and extinguishing commands to the fire suppression module 500, thereby achieving early warning and rapid response to fire hazards. The combination of the signal acquisition module and multiple sensors improves the accuracy of fire detection.

[0048] Furthermore, in one embodiment, see [reference] Figure 4 As shown, the fire extinguishing execution unit includes a first fire extinguishing pipeline 510 and a fire extinguishing agent storage device 520. The first fire extinguishing pipeline 510 is provided with multiple fire extinguishing agent nozzles 511 corresponding to the battery module.

[0049] In this embodiment, the fire extinguishing unit includes a first fire-fighting pipeline 510 and a fire extinguishing agent storage device 520. The first fire-fighting pipeline 510 is equipped with multiple fire extinguishing agent nozzles 511, each corresponding to a specific area of ​​the DC battery energy storage module 200. Through the first fire-fighting pipeline 510, the fire extinguishing agent can be precisely delivered to different locations within the DC battery energy storage module 200, achieving targeted fire extinguishing and improving fire extinguishing efficiency. The fire extinguishing agent storage device 520 stores the fire extinguishing agent and, after the fire detection unit triggers the fire extinguishing signal, rapidly releases the fire extinguishing agent to the area where the battery module is located through the first fire-fighting pipeline 510, thereby effectively suppressing the spread of fire and reducing fire risk. The first fire-fighting pipeline 510 ensures uniform distribution of the fire extinguishing agent, avoiding the problem of fire extinguishing blind spots caused by the limited coverage of a single nozzle.

[0050] In one embodiment, see Figure 4 As shown, the fire protection module 500 also includes a second fire protection pipe 530, which is located on the upper side of the DC battery energy storage module 200 and has multiple sprinkler ports spaced apart.

[0051] In this embodiment, the second fire-fighting pipe 530 is arranged on the upper side of the DC battery energy storage module 200, and multiple sprinkler nozzles are spaced apart along its length. The second fire-fighting pipe 530 works in conjunction with the first fire-fighting pipe 510 to form a layered fire control system. When the fire detection unit detects abnormal temperature rise or thermal runaway of the battery module, the fire protection system can trigger the sprinkler nozzles of the second fire-fighting pipe 530 to release cooling water, so that the cooling water evenly covers the surface of the battery module, thereby rapidly reducing the temperature of the battery module and suppressing the further development of thermal runaway.

[0052] In one embodiment, see Figure 1 and Figure 2 As shown, the DC battery energy storage module 200 is located at one end of the housing 100, the energy storage converter 300 is located at the other end of the housing 100, and the liquid cooling module 400 is located on the same side as the energy storage converter 300 and is arranged in parallel with the energy storage converter 300.

[0053] In this embodiment, the DC battery energy storage module 200 is disposed at one end of the housing 100, and the energy storage converter 300 is disposed at the other end of the housing 100. The liquid cooling module 400 and the energy storage converter 300 are located on the same side and arranged side by side. The separate arrangement of the DC battery energy storage module 200 and the energy storage converter 300 effectively isolates their physical space, reduces electromagnetic interference, and optimizes the internal space layout of the housing 100, facilitating wiring and maintenance. The side-by-side arrangement of the liquid cooling module 400 and the energy storage converter 300 shortens the path length of the cooling pipes, reduces pressure loss during coolant flow, and improves heat exchange efficiency.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A box-type integrated energy storage system, characterized by, The box-type integrated energy storage system includes: Box (100); A DC battery energy storage module (200) is disposed inside the housing (100); An energy storage converter (300) is disposed inside the housing (100) and connected to the DC battery energy storage module (200). The energy storage converter (300) is configured to perform the mutual conversion between AC and DC power.

2. The tank integrated energy storage system of claim 1, wherein: The box-type integrated energy storage system also includes a liquid cooling module (400), which is disposed inside the box (100). The liquid cooling module (400) includes an independent first cooling sub-module and a second cooling sub-module. The first cooling sub-module is in heat exchange contact with the DC battery energy storage module (200), and the second cooling sub-module is in heat exchange contact with the energy storage converter (300).

3. The tank integrated energy storage system of claim 2, wherein: The DC battery energy storage module (200) is equipped with a temperature sensing component, which is communicatively connected to the liquid cooling module (400). The first cooling submodule is configured to adjust its operation based on the temperature data collected by the temperature sensing component.

4. The tank integrated energy storage system of claim 3, wherein: The DC battery energy storage module (200) includes multiple stacked battery modules. The first cooling submodule includes a main cooling pipe (410) and multiple independent cooling branch pipes (420). The main cooling pipe (410) is connected to each of the independent cooling branch pipes (420) through a branch structure. Each of the independent cooling branch pipes (420) forms a heat exchange contact with the corresponding battery module.

5. The tank integrated energy storage system of claim 2, wherein: The energy storage converter (300) is equipped with a converter temperature sensing component, which is communicatively connected to the liquid cooling module (400). The second cooling submodule is configured to adjust its operation based on the temperature data collected by the converter temperature sensing component.

6. The tank integrated energy storage system of claim 4, wherein: The box-type integrated energy storage system also includes a fire-fighting module (500), which includes a fire detection unit and a fire extinguishing execution unit. The fire detection unit is electrically connected to the DC battery energy storage module (200) and the energy storage converter (300) and sends a shutdown command. The fire extinguishing execution unit is configured to deliver fire extinguishing agent to the area where the DC battery energy storage module (200) and the energy storage converter (300) are located.

7. The tank integrated energy storage system of claim 6, wherein: The fire detection unit includes a signal acquisition module, which is connected to an audible and visual alarm, a smoke sensor, a temperature sensor, and a combustible gas detector.

8. The tank integrated energy storage system of claim 6, wherein: The fire extinguishing unit includes a first fire-fighting pipeline (510) and a fire extinguishing agent storage device (520). The first fire-fighting pipeline (510) is provided with a plurality of fire extinguishing agent nozzles (511) corresponding to the battery module.

9. The tank integrated energy storage system of claim 6, wherein: The fire protection module (500) also includes a second fire protection pipeline (530), which is located on the upper side of the DC battery energy storage module (200) and has multiple sprinkler ports spaced apart.

10. The tank integrated energy storage system of claim 2, wherein: The DC battery energy storage module (200) is located at one end of the housing (100), the energy storage converter (300) is located at the other end of the housing (100), and the liquid cooling module (400) is located on the same side as the energy storage converter (300) and arranged in parallel with the energy storage converter (300).

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