Energy storage liquid cooling units and energy storage systems

Abstract

This disclosure provides an energy storage liquid-cooled chiller unit and an energy storage system. The energy storage liquid-cooled chiller unit includes: a frame assembly including a front panel and a frame body, the frame body including an opening on the front side, the front panel being configured to open or close the opening; a compression refrigeration heat exchange assembly located in the rear region within the frame body, configured to provide refrigerant, the refrigerant being configured to cool a heat transfer fluid used to cool an object to be cooled; and a liquid-cooled heat exchange assembly located within the frame body and in front of the compression refrigeration heat exchange assembly, configured to provide the heat transfer fluid. With the front panel open, the servicing components of the liquid-cooled heat exchange assembly are configured to be exposed to the opening. The energy storage system includes the energy storage liquid-cooled chiller unit. The liquid-cooled heat exchange assembly of the energy storage liquid-cooled chiller unit is located close to the opening within the frame body, which facilitates maintenance personnel to directly repair the servicing components of the liquid-cooled heat exchange assembly after opening the front panel, thereby improving maintenance efficiency.

Description

Technical Field

[0001] This disclosure relates to the field of energy storage equipment technology, and in particular to an energy storage liquid cooling unit and an energy storage system. Background Technology

[0002] Energy storage systems consist of a battery pack and a power converter connected to the battery pack. The individual energy storage batteries in the battery pack provide electrical energy, generating a significant amount of heat during charging and discharging. This causes the temperatures of the energy storage batteries and the power converter to rise continuously. When the ambient temperature around the energy storage batteries rises to a certain level, the reaction rate within the batteries accelerates, leading to a reduction in the lifespan of the batteries and the power converter, and even posing a risk of fire or explosion. Therefore, to address these issues, energy storage devices are equipped with liquid cooling units to cool the energy storage batteries and the power converter.

[0003] Energy storage liquid-cooled units use liquid cooling media for cooling. Liquid cooling media have high heat transfer coefficients, large specific heat capacities, and fast cooling rates, thus effectively reducing the temperature of the object being cooled and improving the uniformity of temperature distribution. However, the liquid-cooled heat exchange components of energy storage liquid-cooled units require frequent maintenance, and before maintenance, the entire energy storage liquid-cooled unit must be moved out of the battery cabinet, making maintenance difficult. Utility Model Content

[0004] The purpose of this disclosure is to provide an energy storage liquid chiller unit and an energy storage system, which aims to reduce the maintenance difficulty of the energy storage liquid chiller unit.

[0005] The first aspect of this disclosure provides an energy storage liquid cooling unit, comprising:

[0006] A rack assembly includes a front panel and a rack body, the rack body including an opening on the front side, the front panel being configured to open or close the opening;

[0007] A compression refrigeration heat exchange assembly, located in the rear region within the frame body, is configured to provide refrigerant configured to cool a heat transfer fluid used to cool the object to be cooled; and

[0008] A liquid-cooled heat exchange assembly, located within the frame body and in front of the compression refrigeration heat exchange assembly, is configured to provide the refrigerant. With the front panel open, the servicing components of the liquid-cooled heat exchange assembly are exposed to the opening.

[0009] It also includes an electrical control component located inside the frame body and in front of the compression refrigeration heat exchange component, and signal-connected to the compression refrigeration heat exchange component and the liquid cooling heat exchange component, wherein the part of the electrical control component to be serviced is configured to be exposed to the open opening.

[0010] In some embodiments of the energy storage liquid-cooled unit, the liquid-cooled heat exchange components and the electrical control components are arranged along the height direction.

[0011] In some embodiments of the energy storage liquid cooling unit, a controller is also included, which is located within the frame body and near the opening.

[0012] In some embodiments of the energy storage liquid-cooled unit, a liquid injection port and a liquid injection pipe are also included. The liquid injection pipe connects the liquid injection port and the compression refrigeration heat exchange assembly and is configured to introduce the refrigerant into the compression refrigeration heat exchange assembly or to extract the refrigerant from the compression refrigeration heat exchange assembly. The liquid injection port is configured to be exposed to the open opening.

[0013] In some embodiments of the energy storage liquid cooling unit, the frame body includes a front frame, which is disposed near the opening, and the liquid injection port is located on the front frame.

[0014] In some embodiments of the energy storage liquid-cooled unit, the liquid-cooled heat exchange assembly includes a filter element located in the front region of the liquid-cooled heat exchange assembly.

[0015] In some embodiments of the energy storage liquid cooling unit, the energy storage liquid cooling unit is a plug-in frame liquid cooling unit.

[0016] A second aspect of this disclosure provides an energy storage system, comprising:

[0017] Battery cabinet, including a cabinet door that can be opened and closed;

[0018] The battery pack, located inside the battery cabinet and serving as the object to be cooled; and

[0019] The energy storage liquid cooling unit described in the first aspect of this disclosure is arranged horizontally with the battery pack inside the battery cabinet, and the opening of the energy storage liquid cooling unit is oriented towards the cabinet door.

[0020] In some embodiments of the energy storage system, a power converter is also included, which is arranged along the height direction with the energy storage liquid cooling unit in the battery cabinet, and both the power converter and the battery pack serve as the objects to be cooled.

[0021] Based on the energy storage liquid-cooled unit provided in this disclosure embodiment, the energy storage liquid-cooled unit includes a frame assembly, a liquid-cooled heat exchange assembly, and a compression refrigeration heat exchange assembly. Both the liquid-cooled heat exchange assembly and the compression refrigeration heat exchange assembly are located within the frame body of the frame assembly, and the liquid-cooled heat exchange assembly is positioned in front of the compression refrigeration heat exchange assembly. This arrangement allows the liquid-cooled heat exchange assembly to be closer to the opening within the frame body, enabling maintenance personnel to directly repair the components of the liquid-cooled heat exchange assembly after opening the front panel, without having to remove the entire energy storage liquid-cooled unit, thereby improving maintenance efficiency.

[0022] The energy storage system disclosed herein includes the energy storage liquid-cooled unit, thus possessing the advantages of the energy storage liquid-cooled unit disclosed herein. The liquid-cooled heat exchange component is located in front of the compression refrigeration heat exchange component, which allows the liquid-cooled heat exchange component to be closer to the opening within the main frame. This facilitates maintenance personnel to directly access and repair the components of the liquid-cooled heat exchange component after opening the front panel, without needing to remove the entire energy storage liquid-cooled unit, thereby improving maintenance efficiency. Furthermore, the liquid-cooled heat exchange component and the compression refrigeration heat exchange component are housed within the same unit, reducing the space occupied by the energy storage liquid-cooled unit, improving the space utilization rate of the energy storage system, and shortening the pipe length between the liquid-cooled heat exchange component and the compression refrigeration heat exchange component, thereby reducing the risk of leakage and improving the safety performance of the energy storage liquid-cooled unit. Additionally, the opening of the energy storage liquid-cooled unit faces the cabinet door, facilitating quick inspection and repair of the internal components by maintenance personnel, further improving maintenance efficiency. In addition, the energy storage liquid cooling unit and the battery pack are arranged side by side in the battery cabinet, which helps to make full use of the space in the battery cabinet and improve the space utilization rate. It also helps the coolant of the energy storage liquid cooling unit to be quickly introduced into the cold plate of the battery pack, thereby quickly cooling the battery pack.

[0023] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0024] 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. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of an energy storage liquid-cooled unit according to some embodiments of this disclosure.

[0026] Figure 2 for Figure 1 The diagram shows the internal structure of the energy storage liquid cooler unit.

[0027] Figure 3 for Figure 1 The diagram shows a side view of the energy storage liquid cooling unit.

[0028] Figure 4 This is a schematic diagram of the structure of an energy storage system according to some embodiments of this disclosure.

[0029] Figures 1 to 4 In the figures, the labels represent:

[0030] 100, Energy storage liquid-cooled unit; 100a, Liquid inlet; 101, Front panel; 1011, Handle; 102, Main frame; 110, Compression refrigeration heat exchange assembly; 120, Liquid-cooled heat exchange assembly; 121, Filter component; 130, Electrical control assembly; 140, Controller;

[0031] 200. Battery cabinet; 201. Cabinet door;

[0032] 300. Battery pack. Detailed Implementation

[0033] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0035] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0036] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are generally based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] Liquid-cooled units are a type of cooling unit that uses phase change cooling. Cooling units can employ several cooling methods, including air cooling, heat pipe cooling, and phase change cooling. Air-cooled units are simple in structure and low in cost, but the low specific heat capacity of air leads to relatively low heat dissipation efficiency. Heat pipe cooling is generally suitable for high-rate lithium battery systems (such as fast-charging battery systems and frequency-regulating energy storage systems), but the heat exchange capacity of these units is limited, making them unsuitable for cooling large equipment. Phase change cooling units include air-cooled units and liquid-cooled units. The heat absorbed by the phase change material can be continuously removed by either liquid-cooled or air-cooled units, allowing for continuous heat absorption and making them suitable for cooling large equipment (such as wind and solar power plants). However, air-cooled units are space-consuming and expensive. Compared to air-cooled units, liquid-cooled units have a more compact structure, occupy less space, and are less affected by altitude and air pressure, thus having a wider range of applications.

[0038] Large-scale energy storage systems are characterized by large battery capacity, high power density, and complex operating conditions. Therefore, liquid cooling units are generally used to cool the energy storage batteries and power converters. These liquid cooling units consist of liquid-cooled heat exchange components and compression refrigeration heat exchange components. The liquid-cooled heat exchange components provide a refrigerant (e.g., water) to cool the energy storage components. The compression refrigeration heat exchange components provide a refrigerant to cool the refrigerant. When the energy storage batteries in the battery cabinet need cooling, the compression refrigeration heat exchange components use their internal refrigerant to cool the refrigerant in the liquid-cooled heat exchange components. The liquid-cooled heat exchange components then transport the cooled refrigerant to the cold plates inside the battery pack, allowing the battery pack temperature to decrease and gradually stabilize. However, the liquid-cooled heat exchange components require frequent maintenance, which necessitates removing the entire liquid cooling unit from the battery cabinet before maintenance, making maintenance challenging.

[0039] To address the aforementioned problems, this disclosure provides an energy storage liquid-cooled unit 100. For example... Figures 1 to 3 As shown, the energy storage liquid cooling unit 100 includes:

[0040] The rack assembly includes a front panel 101 and a rack body 102, the rack body 102 including an opening on the front side, and the front panel 101 being configured to open or close the opening;

[0041] The compression refrigeration heat exchange assembly 110, located in the rear region within the frame body 102, is configured to provide refrigerant, which is configured to cool a heat transfer fluid used to cool the object to be cooled; and

[0042] The liquid-cooled heat exchange assembly 120, located within the frame body 102 and in front of the compression refrigeration heat exchange assembly 110, is configured to provide a refrigerant. With the front panel 101 open, the parts of the liquid-cooled heat exchange assembly 120 to be inspected are exposed to the opening.

[0043] Based on the energy storage liquid-cooled unit 100 provided in this embodiment, the energy storage liquid-cooled unit 100 includes a frame assembly, a liquid-cooled heat exchange assembly 120, and a compression refrigeration heat exchange assembly 110. Both the liquid-cooled heat exchange assembly 120 and the compression refrigeration heat exchange assembly 110 are located within the frame body 102 of the frame assembly, and the liquid-cooled heat exchange assembly 120 is located in front of the compression refrigeration heat exchange assembly 110. This arrangement allows the liquid-cooled heat exchange assembly 120 to be closer to the opening within the frame body 102, which is beneficial for maintenance personnel to directly repair the components of the liquid-cooled heat exchange assembly 120 after opening the front panel 101, without having to remove the entire energy storage liquid-cooled unit 100, thereby improving maintenance efficiency.

[0044] In related technologies, the liquid-cooled heat exchange components and the compression refrigeration heat exchange components of energy storage liquid-cooled units are installed in different racks. Therefore, the energy storage liquid-cooled units occupy a large space, and the space utilization rate of the energy storage system is reduced accordingly. In addition, the liquid-cooled heat exchange components and the compression refrigeration heat exchange components need to be connected by pipes. Since the distance between the liquid-cooled heat exchange components and the compression refrigeration heat exchange components is relatively large, the required pipes are also long, which can easily lead to problems such as liquid leakage.

[0045] The energy storage liquid-cooled unit 100 provided in this embodiment integrates the liquid-cooled heat exchange component 120 and the compression refrigeration heat exchange component 110 into the same unit, which helps reduce the space occupied by the energy storage liquid-cooled unit 100 and improves the space utilization rate of the energy storage system. Furthermore, it helps to shorten the pipe length between the liquid-cooled heat exchange component 120 and the compression refrigeration heat exchange component 110, thereby reducing the risk of leakage and improving the safety performance of the energy storage liquid-cooled unit 100.

[0046] like Figure 2 and Figure 3As shown, in some embodiments, the energy storage liquid-cooled unit also includes an electrical control assembly 130. The electrical control assembly 130 is located inside the frame body 102 and in front of the compression refrigeration heat exchange assembly 110, and is signal-connected to both the compression refrigeration heat exchange assembly 110 and the liquid-cooled heat exchange assembly 120. The components of the electrical control assembly 130 to be serviced are configured to be exposed to open openings. These components include, for example, a compressor drive board, a water pump drive board, a main control board, etc.

[0047] The electrical control component 130 may be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described in this disclosure.

[0048] By placing the electronic control component 130 in front of the compression refrigeration heat exchange component 110 and exposing the parts of the electronic control component 130 to be repaired to the open opening, maintenance personnel can easily inspect and maintain the parts of the electronic control component 130 by opening the front panel 101. This also facilitates quick detection of the working status of the electronic control component 130, thereby enabling timely judgment of the overall machine's working status.

[0049] like Figure 2 and Figure 3 As shown, in some embodiments, the liquid-cooled heat exchange assembly 120 and the electronic control assembly 130 are arranged along the height direction.

[0050] For example, the electronic control component 130 can be located below the liquid-cooled heat exchange component 120. The electronic control component 130 is signal-connected to the compression refrigeration heat exchange component 110 and the liquid-cooled heat exchange component 120 to control the operation of various components within them. Therefore, operators need to inspect the electronic control component 130 frequently. Positioning the electronic control component 130 below the liquid-cooled heat exchange component 120 allows operators to perform maintenance and inspection of the components under repair from a lower height, improving operational convenience and safety. Alternatively, the liquid-cooled heat exchange component 120 can also be located below the electronic control component 130. The liquid-cooled heat exchange component 120 and the compression refrigeration heat exchange component 110 need to be connected by pipes. Positioning the liquid-cooled heat exchange component 120 below the electronic control component 130 facilitates closer-to-ground pipe routing, avoiding pipe suspension and thus preventing leakage from affecting the performance of the electronic control component 150.

[0051] The arrangement of the liquid-cooled heat exchange assembly 120 and the electrical control assembly 130 along the height direction helps to make full use of the space within the main frame 102 and improve space utilization.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments, the energy storage liquid cooling unit 100 also includes a controller 140, which is located within the frame body 102 and near an opening. The controller 140 can be used, for example, for remote system upgrades to perform software system upgrades on the entire unit.

[0053] The controller 140 may be implemented as a general-purpose processor, PLC, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any suitable combination thereof for performing the functions described in this disclosure.

[0054] The controller 140 is located inside the main body 102 of the frame and is close to the opening, which makes it easy for maintenance personnel to open the front panel 101 to directly operate or repair the controller 140, thereby improving the work efficiency of maintenance personnel.

[0055] like Figure 2 and Figure 3 As shown, in some embodiments, the energy storage liquid cooling unit 100 further includes a liquid injection port 100a and a liquid injection pipe, the liquid injection pipe connecting the liquid injection port 100a and the compression refrigeration heat exchange assembly 110, and is configured to introduce refrigerant into the compression refrigeration heat exchange assembly 110 or extract refrigerant from the compression refrigeration heat exchange assembly 110, the liquid injection port 100a being configured to be exposed to an open opening.

[0056] The exposed injection port 100a allows operators to directly add refrigerant to or extract refrigerant from the compression refrigeration heat exchange assembly 110 by opening the front panel 101. This facilitates timely adjustment of the amount of refrigerant in the compression refrigeration cycle, thereby helping to maintain compression refrigeration efficiency.

[0057] like Figure 2 and Figure 3 As shown, in some embodiments, the frame body 102 includes a front frame disposed near the opening, and the liquid injection port 100a is located on the front frame.

[0058] The location of the injection port 100a on the front frame allows it to be positioned at the front of the entire frame body 100, eliminating the need for operators to reach their hands into the frame body 102 and improving the ease of operation for operators.

[0059] like Figure 2 and Figure 3 As shown, in some embodiments, the liquid-cooled heat exchange assembly 120 includes a filter element 121 located in the front region of the liquid-cooled heat exchange assembly 120.

[0060] The filter element 121 is located in the front area of ​​the liquid-cooled heat exchange assembly 120, which makes it easier for maintenance personnel to remove the filter element 121 for cleaning and maintenance after opening the front panel 101, thus improving the work efficiency of maintenance personnel.

[0061] like Figure 2 and Figure 3 As shown, in some embodiments, the energy storage liquid chiller is a plug-in type liquid chiller.

[0062] This setup allows for quick location of maintenance points within the confined space of the battery cabinet without adjusting the position of the energy storage liquid cooling unit. It helps reduce the amount of disassembly work caused by the side or back of the energy storage liquid cooling unit being blocked by adjacent equipment. It effectively matches the modular assembly characteristics of the battery cabinet and the operational needs of the confined space, thus improving maintenance efficiency.

[0063] like Figure 4 As shown, another aspect of this disclosure provides an energy storage system, which includes:

[0064] Battery cabinet 200, including an openable cabinet door 201;

[0065] Battery pack 300, located inside battery cabinet 200 and serving as the object to be cooled; and

[0066] The energy storage liquid cooling unit 100 provided in this embodiment is arranged horizontally with the battery pack 300 inside the battery cabinet 200, and the opening of the energy storage liquid cooling unit 100 is set facing the cabinet door 201.

[0067] The energy storage system of this disclosure has the advantages of the liquid-cooled energy storage unit of this disclosure. The liquid-cooled heat exchange component 120 is located in front of the compression refrigeration heat exchange component 110, which allows the liquid-cooled heat exchange component 120 to be closer to the opening within the frame body 102. This facilitates maintenance personnel to directly repair the components of the liquid-cooled heat exchange component 120 after opening the front panel 101, without having to remove the entire liquid-cooled energy storage unit 100, thereby improving maintenance efficiency. Furthermore, the liquid-cooled heat exchange component 120 and the compression refrigeration heat exchange component 110 are housed in the same unit, which helps reduce the space occupied by the liquid-cooled energy storage unit 100, improves the space utilization of the energy storage system, and shortens the pipe length between the liquid-cooled heat exchange component 120 and the compression refrigeration heat exchange component 110, thereby reducing the risk of leakage and improving the safety performance of the liquid-cooled energy storage unit 100. Furthermore, the opening of the energy storage liquid cooling unit 100 faces the cabinet door 201, which facilitates maintenance personnel to quickly inspect the interior of the energy storage liquid cooling unit 100 and improves maintenance efficiency. Additionally, the energy storage liquid cooling unit 100 and the battery pack 300 are arranged horizontally within the battery cabinet 200, which helps to fully utilize the space of the battery cabinet 200, improving space utilization. It also facilitates the rapid flow of the coolant from the energy storage liquid cooling unit 100 into the cold plates of the battery pack 300, thereby quickly cooling the battery pack 300.

[0068] like Figure 4 As shown, in some embodiments, the energy storage system also includes a power converter, which and the energy storage liquid cooling unit 100 are arranged along the height direction in the battery cabinet 200, and both the power converter and the battery pack 300 are objects to be cooled.

[0069] The power converter and the energy storage liquid cooling unit 100 are arranged along the height direction within the battery cabinet 200, which helps to make full use of the space within the battery cabinet 200, thereby improving the space utilization rate of the energy storage system. In addition, the refrigerant cools the power converter, which helps to extend the service life of the power converter.

[0070] The following combination Figures 1 to 4 The energy storage liquid cooling unit and energy storage system according to the embodiments of this disclosure will be described in detail.

[0071] like Figures 1 to 3As shown, the energy storage liquid-cooled unit includes a frame assembly, a liquid-cooled heat exchange assembly 120, a compression refrigeration heat exchange assembly 110, an electrical control assembly 130, a controller 140, a liquid injection port 100a, and a liquid injection pipe. The energy storage liquid-cooled unit is a plug-in type liquid-cooled unit. The frame assembly includes a front panel 101 and a frame body 102. A handle 1011 is provided on the front panel 101. The frame body 102 includes an opening on the front side and a front frame, with the front frame positioned close to the opening. The liquid injection port 100a is located on the front frame. The liquid injection pipe connects the liquid injection port 100a and the compression refrigeration heat exchange assembly 110. The front panel 101 is configured to open or close the opening. The compression refrigeration heat exchange assembly 110 is located in the rear region within the frame body 102. The liquid-cooled heat exchange assembly 120 and the electrical control assembly 130 are located within the frame body 102 and in front of the compression refrigeration heat exchange assembly 110. With the front panel 101 open, the liquid inlet 100a, the controller 140, the components of the liquid-cooled heat exchange assembly 120 to be inspected, and the components of the electrical control assembly 130 to be inspected are configured to be exposed to the opening.

[0072] like Figure 2 and Figure 3 As shown, the components to be serviced in the liquid-cooled heat exchanger assembly 120 include a filter component. The filter component 121 is located at the front of the liquid-cooled heat exchanger assembly 120. When the front panel 101 is opened, the filter component 121 can be exposed through the opening. In addition, the filter component 121 is located at a lower height within the liquid-cooled heat exchanger assembly 120, which facilitates cleaning and maintenance by maintenance personnel.

[0073] like Figure 2 and Figure 3 As shown, the electronic control component 130 is located below the liquid-cooled heat exchange component 120. This arrangement facilitates frequent monitoring of the operational status of the electronic control component 130 by operators, thereby helping to maintain the normal operation of the energy storage system. The components of the electronic control component 130 to be inspected include the compressor drive board, the water pump drive board, and the main control board.

[0074] like Figure 2 and Figure 3 As shown, the controller 140 is mounted on the left side wall of the rack body 102 near the opening, and is located in front of the liquid-cooled heat exchange assembly 120. The mounting position of the controller 140 facilitates full utilization of the internal space of the rack body 102, and this position also allows operators to easily operate the control panel of the controller 140.

[0075] like Figure 4As shown, the energy storage system includes a battery cabinet 200, an energy storage liquid cooler unit 100, a power converter, and a battery pack 300. The energy storage liquid cooler unit 100, power converter, and battery pack 300 are all located within the battery cabinet 200. The energy storage liquid cooler unit 100 is positioned above the power converter, and the battery pack 300 is located to the right of the energy storage liquid cooler unit 100 and the power converter, arranged vertically. The energy storage liquid cooler unit 100 cools the power converter and the battery pack 300.

[0076] The battery cabinet 200 includes an openable cabinet door 201, and the opening of the energy storage liquid cooling unit 100 is oriented toward the cabinet door 201.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. An energy storage liquid chiller unit, characterized by, include: A rack assembly includes a front panel (101) and a rack body (102), the rack body (102) including an opening on the front side, the front panel (101) being configured to open or close the opening; A compression refrigeration heat exchange assembly (110), located in the rear region within the frame body (102), is configured to provide refrigerant configured to cool a heat transfer fluid used to cool an object to be cooled; and A liquid-cooled heat exchange assembly (120), located within the frame body (102) and in front of the compression refrigeration heat exchange assembly (110), is configured to provide the refrigerant. With the front panel (101) open, the servicing components of the liquid-cooled heat exchange assembly (120) are configured to be exposed to the opening.

2. The energy storage liquid chiller unit of claim 1, wherein, It also includes an electrical control assembly (130) located inside the frame body (102) and in front of the compression refrigeration heat exchange assembly (110), and signal-connected to the compression refrigeration heat exchange assembly (110) and the liquid cooling heat exchange assembly (120), wherein the part of the electrical control assembly (130) to be serviced is configured to be exposed to the open opening.

3. The energy storage liquid chiller unit of claim 2, wherein, The liquid-cooled heat exchange assembly (120) and the electronic control assembly (130) are arranged along the height direction.

4. The energy storage liquid chiller unit of claim 1, wherein, It also includes a controller (140) located within the frame body (102) and near the opening.

5. The energy storage liquid chiller unit of claim 1, wherein, It also includes a liquid injection port (100a) and a liquid injection pipe, the liquid injection pipe connecting the liquid injection port (100a) and the compression refrigeration heat exchange assembly (110), and is configured to introduce the refrigerant into the compression refrigeration heat exchange assembly (110) or extract the refrigerant from the compression refrigeration heat exchange assembly (110), the liquid injection port (100a) being configured to be exposed to the open opening.

6. The energy storage liquid chiller unit of claim 5, wherein, The main body of the frame (102) includes a front frame, which is disposed near the opening, and the liquid injection port (100a) is located on the front frame.

7. The energy storage liquid chiller unit of claim 1, wherein, The liquid-cooled heat exchange assembly (120) includes a filter element (121) located in the front region of the liquid-cooled heat exchange assembly (120).

8. The energy storage liquid chiller unit of any of claims 1-7, wherein, The energy storage liquid chiller unit (100) is a plug-in type liquid chiller unit.

9. An energy storage system characterized by, include: Battery cabinet (200), including an openable cabinet door (201); The battery pack (300) is located inside the battery cabinet (200) and serves as the object to be cooled; and The energy storage liquid cooling unit (100) according to any one of claims 1 to 8 is arranged horizontally with the battery pack (300) inside the battery cabinet (200), and the opening of the energy storage liquid cooling unit (100) is arranged facing the cabinet door (201).

10. The energy storage system of claim 9, wherein, It also includes a power converter, which and the energy storage liquid cooling unit (100) are arranged along the height direction in the battery cabinet (200), and both the power converter and the battery pack (300) are the objects to be cooled.

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