Energy storage system

Abstract

The invention discloses an energy storage system, and the system comprises a cabinet which comprises a cabinet body and a cabinet door; the battery system is mounted in the cabinet body; a heat exchange module; the heat dissipation module is provided with a refrigerant circulation flow path, the refrigerant circulation flow path at least comprises a compressor assembly, a heat exchanger and a heat dissipation module, the compressor assembly and the heat exchanger are located in the cabinet, the heat exchanger is arranged corresponding to a battery module of the battery system, and the heat dissipation module is installed on the cabinet door. The energy storage system has the advantages that the space utilization rate is high, noise is effectively reduced, and oil return of the system is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment structure layout, and in particular to an energy storage system. Background Art

[0002] The energy storage system in the related art adopts an integrated solution. The heat exchange module inside the energy storage system cabinet is set on the top of the cabinet. The heat exchange module is located on the top of the cabinet, which is inconvenient to install and maintain, and there is a short circuit of fresh air, which affects reliability. In addition, all components are inside the energy storage system cabinet. The components inside the cabinet are too dense, resulting in low space utilization. The mutual obstruction between the components will further lead to inconvenience in maintenance. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an energy storage system, which has the advantages of high space utilization, effective noise reduction and facilitating system oil return.

[0004] To achieve the above-mentioned purpose, an energy storage system is proposed according to an embodiment of the present invention, comprising: a cabinet, the cabinet comprising a cabinet body and a cabinet door; a battery system, the battery system being installed in the cabinet body; a heat exchange module; the heat exchange module having a refrigerant circulation flow path, the refrigerant circulation flow path at least comprising a compressor assembly, a heat exchanger, and a heat dissipation module, the compressor assembly and the heat exchanger are located in the cabinet, the heat exchanger is arranged corresponding to the battery module of the battery system, and the heat dissipation module is installed on the cabinet door.

[0005] The energy storage system according to the embodiment of the present invention places the compressor assembly and the heat exchanger in the cabinet, and places the heat dissipation module on the cabinet door, so that the internal space of the cabinet is effectively utilized by adopting a split structure, and less internal components occupy space, thereby improving the space utilization rate inside the cabinet. At the same time, the structural layout of the heat exchange module allows all maintenance parts to be directly contacted, reducing the tedious operations during maintenance and improving the maintenance efficiency of the staff. There is no need to disassemble a large number of parts during maintenance, and maintenance and replacement can be carried out quickly, saving time and manpower.

[0006] The cooling module is inletted from the front, with cold air entering from the bottom and hot air being discharged from the top, forming a good natural convection. This airflow path improves the efficiency of air heat exchange and enhances the heat dissipation effect. At the same time, it reduces the dense layout of components inside the cabinet, thereby reducing the possibility of short circuits between the cooling module and other electrical components due to heat accumulation, and enhancing the safety and reliability of the energy storage system. In addition, placing the compressor assembly inside the cabinet helps reduce the operating noise of the energy storage system because the compressor assembly is isolated from other components, reducing the spread of noise.

[0007] Therefore, the energy storage system according to the embodiment of the present invention has the advantages of high space utilization, effective noise reduction, and facilitating system oil return.

[0008] According to some specific embodiments of the present invention, the heat exchanger is a direct cooling heat sink, which is arranged corresponding to the batteries of the battery system and the batteries are located on two opposite side surfaces of the direct cooling heat sink.

[0009] According to some specific embodiments of the present invention, the battery system includes a first battery system and a second battery system, the first battery system includes a plurality of first battery modules, and the second battery system includes a plurality of second battery modules; heat exchangers corresponding to the plurality of first battery modules, heat exchangers corresponding to the plurality of second battery modules, the compressor assembly and the heat dissipation module are connected to form the refrigerant circulation path.

[0010] According to some specific embodiments of the present invention, the heat dissipation module includes a first heat dissipation module and a second heat dissipation module, the first heat dissipation module and the second module are both connected to the compressor assembly, the first heat dissipation module is connected to the heat exchanger corresponding to the first battery module, and the second heat dissipation module is connected to the heat exchanger corresponding to the second battery module.

[0011] According to some specific embodiments of the present invention, the cabinet door includes a first cabinet door and a second cabinet door, and the first cabinet door and the second cabinet door are a double-door structure, the first heat dissipation module is installed on the first cabinet door, and the second heat dissipation module is installed on the second cabinet door.

[0012] According to some specific embodiments of the present invention, the compressor assembly is located between the first heat dissipation module and the second heat dissipation module, and the side of the compressor assembly facing the cabinet door is constructed with a first refrigerant outlet and a first refrigerant inlet, a second refrigerant outlet and a second refrigerant inlet, the first refrigerant inlet and the first refrigerant outlet are connected to the first heat dissipation module, and the second refrigerant inlet and the second refrigerant inlet are connected to the second heat dissipation module.

[0013] According to some specific embodiments of the present invention, the first battery modules are arranged in multiple layers, and the first battery modules of each layer are arranged in pairs on both sides of the cabinet; the second battery modules are arranged in multiple layers, and the second battery modules of each layer are arranged in pairs on both sides of the cabinet.

[0014] According to some specific embodiments of the present invention, each of the heat exchangers is provided with a liquid inlet and a liquid outlet connected to a pipeline of the refrigerant circulation flow path, and the liquid inlet and the liquid outlet both extend horizontally toward the cabinet door.

[0015] According to some specific embodiments of the present invention, the heat dissipation module is located at the bottom of the cabinet door, and the heat dissipation module is provided with a heat dissipation inlet and a heat dissipation outlet connected to the pipeline of the refrigerant circulation flow path, and the heat dissipation inlet and the heat dissipation outlet are both located below the heat exchanger.

[0016] According to some specific embodiments of the present invention, the thickness of the heat dissipation module is ≤200 mm, the width of the compressor assembly is ≤200 mm, and the height of the compressor assembly is ≤350 mm.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of an energy storage system according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a refrigerant circulation flow path according to an embodiment of the present invention; Figure 3 yes Figure 2 A partial schematic diagram of Figure 4 4 is a partial schematic diagram of a refrigerant circulation flow path according to an embodiment of the present invention.

[0019] Reference numerals: Energy storage system 1, cabinet 100, heat exchange module 200, cabinet body 110, cabinet door 120, The first cabinet door 121, the second cabinet door 122, the refrigerant circulation flow path 210, the compressor assembly 211, Heat exchanger 212, heat dissipation module 213, first heat dissipation module 2131, second heat dissipation module 2132, Heat dissipation inlet 2133, heat dissipation outlet 2134, first refrigerant outlet 2111, first refrigerant inlet 2112, The second refrigerant outlet 2113 , the second refrigerant inlet 2114 , the liquid inlet 2121 , and the liquid outlet 2122 . DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0023] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0024] The energy storage system 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 4 As shown, the energy storage system 1 according to an embodiment of the present invention includes a cabinet 100 , a battery system and a heat exchange module 200 .

[0026] The cabinet 100 includes a cabinet body 110 and a cabinet door 120. The battery system (not shown in the figure) is installed in the cabinet body 110. The heat exchange module 200 has a refrigerant circulation flow path 210, and the refrigerant circulation flow path 210 at least includes a compressor assembly 211, a heat exchanger 212, and a heat dissipation module 213. The compressor assembly 211 and the heat exchanger 212 are located in the cabinet 100, and the heat exchanger 212 is arranged corresponding to the battery module of the battery system. The heat dissipation module 213 is installed on the cabinet door 120.

[0027] For example, the refrigerant circulation flow path 210 will pass through the electronic expansion valve, the heat exchanger 212 and the compressor assembly 211 in sequence. The refrigerant is at high temperature when it comes out of the compressor assembly 211, passes through the heat dissipation module 213 in sequence at medium temperature, reaches the electronic expansion valve at low temperature, and the refrigerant temperature rises again when passing through the heat exchanger 212, and finally returns to the compressor assembly 211, and the refrigerant continues to circulate.

[0028] According to the energy storage system 1 of the embodiment of the present invention, by placing the compressor assembly 211 and the heat exchanger 212 in the cabinet 110, and placing the heat dissipation module 213 on the cabinet door 120, a split structure is adopted to effectively utilize the internal space of the cabinet 100, less internal components occupy space, and improve the space utilization rate inside the cabinet 100. At the same time, the structural layout of the heat exchange module 200 allows all maintenance components to be directly contacted, reducing the tedious operations during maintenance and improving the maintenance efficiency of the staff. There is no need to disassemble a large number of components during maintenance, and maintenance and replacement can be carried out quickly, saving time and manpower.

[0029] The heat dissipation module 213 is inletted from the front, the cold air enters from the bottom, and the hot air is discharged from the top, forming a good natural convection. This airflow path improves the efficiency of air heat exchange and enhances the heat dissipation effect. At the same time, it reduces the dense layout of components inside the cabinet 100, thereby reducing the possibility of short circuits caused by heat accumulation between the heat dissipation module 213 and other electrical components, and enhancing the safety and reliability of the energy storage system 1. In addition, placing the compressor assembly 211 in the cabinet 110 helps to reduce the operating noise of the energy storage system 1, because the compressor assembly 211 is isolated from other components, reducing the spread of noise.

[0030] Therefore, the energy storage system 1 according to the embodiment of the present invention has the advantages of high space utilization, effective noise reduction, and facilitating system oil return.

[0031] In some specific embodiments of the present invention, Figure 2 As shown, the heat exchanger 212 is a direct cooling heat sink, which is arranged corresponding to the batteries of the battery system and the batteries are located on two opposite sides of the direct cooling heat sink.

[0032] The direct cooling heat sink is directly set corresponding to the battery, and the battery is located on its opposite side surfaces, which can achieve close contact with the battery and efficient heat transfer, quickly take away the heat generated by the battery during operation, and ensure that the battery operates within an appropriate temperature range, thereby improving the performance and life of the battery.

[0033] In some specific embodiments of the present invention, the battery system includes a first battery system and a second battery system, the first battery system includes a plurality of first battery modules, and the second battery system includes a plurality of second battery modules. Heat exchangers corresponding to the plurality of first battery modules, heat exchangers corresponding to the plurality of second battery modules, a compressor assembly, and a heat dissipation module are connected to form a refrigerant circulation flow path.

[0034] By setting up multiple battery modules for the first battery system and the second battery system respectively, energy can be effectively managed and distributed according to load requirements, thereby improving the working efficiency of the overall energy storage system 1. Each battery module is connected to the refrigerant circulation flow path through an independent heat exchanger 212, so that heat can be quickly and effectively conducted away to keep the battery operating within the optimal temperature range.

[0035] In some specific embodiments of the present invention, Figure 2 and Figure 4 As shown, the heat dissipation module 213 includes a first heat dissipation module 2131 and a second heat dissipation module 2132. The first heat dissipation module 2131 and the second heat dissipation module 2132 are both connected to the compressor assembly 211. The first heat dissipation module 2131 is connected to the heat exchanger 212 corresponding to the first battery module, and the second heat dissipation module 2132 is connected to the heat exchanger 212 corresponding to the second battery module.

[0036] The first heat dissipation module 2131 corresponds to the first battery module, and the second heat dissipation module 2132 corresponds to the second battery module. This one-to-one correspondence structure enables different battery modules to obtain more accurate temperature control, thereby optimizing the working environment of the battery and improving the performance and life of the battery. By directly connecting the heat dissipation module 213 to the heat exchanger 212 of the battery module, more efficient heat exchange can be achieved, and the heat generated by the battery module can be quickly transferred to the heat dissipation module 213, avoiding battery overheating and improving the safety and stability of the system.

[0037] In some specific embodiments of the present invention, Figure 1 As shown, the cabinet door 120 includes a first cabinet door 121 and a second cabinet door 122 , and the first cabinet door 121 and the second cabinet door 122 are a double-door structure, the first heat dissipation module 2131 is installed on the first cabinet door 121 , and the second heat dissipation module 2132 is installed on the second cabinet door 122 .

[0038] The first cabinet door 121 and the second cabinet door 122 of the double-door structure allow the user to more conveniently enter the interior of the cabinet 100 for maintenance and overhaul. The opening of the two cabinet doors 120 can provide a larger operating space, reduce the feeling of congestion during maintenance, and improve work efficiency. The first heat dissipation module 2131 and the second heat dissipation module 2132 are respectively installed on the two cabinet doors 120, so that the external space of the cabinet 110 can be more effectively used for heat dissipation. Double-sided heat dissipation can increase the surface area of ​​heat exchange, improve heat dissipation efficiency, and ensure the temperature control effect of the energy storage system 1 when it is running under high load.

[0039] In some specific embodiments of the present invention, Figure 2 and Figure 4As shown, the compressor assembly 211 is located between the first heat dissipation module 2131 and the second heat dissipation module 2132, and the side of the compressor assembly 211 facing the cabinet door 120 is constructed with a first refrigerant outlet 2111 and a first refrigerant inlet 2112, a second refrigerant outlet 2113 and a second refrigerant inlet 2114, the first refrigerant inlet 2112 and the first refrigerant outlet 2111 are connected to the first heat dissipation module 2131, and the second refrigerant inlet 2114 and the second refrigerant outlet 2113 are connected to the second heat dissipation module 2132.

[0040] In addition, the compressor assembly 211 is placed at the bottom of the battery module, and the heat exchanger 212 pipeline is facing downward, which fully considers the lubricating oil reflux problem of the compressor assembly 211, ensures that the lubricating oil can easily return to the compressor assembly 211 by gravity, ensures the normal operation of the compressor assembly 211, extends the service life of the equipment, and avoids failures caused by poor lubrication.

[0041] By connecting the first refrigerant outlet 2111 and the first refrigerant inlet 2112 to the first heat dissipation module 2131, and connecting the second refrigerant inlet 2114 and the second refrigerant outlet 2113 to the second heat dissipation module 2132, the refrigerant can circulate between the compressor assembly 211 and the first heat dissipation module 2131 and the second heat dissipation module 2132, thereby achieving efficient heat exchange, helping to quickly dissipate the heat generated by the compressor assembly 211, and improving the heat dissipation efficiency of the entire energy storage system 1.

[0042] In some specific embodiments of the present invention, the first battery modules are arranged in multiple layers, and the first battery modules of each layer are arranged in pairs on both sides of the cabinet 110. The second battery modules are arranged in multiple layers, and the second battery modules of each layer are arranged in pairs on both sides of the cabinet 110.

[0043] For example, the energy storage system 1 includes a first battery system and a second battery system, and the first battery system and the second battery system can be composed of four battery modules respectively. The energy storage system 1 with a power of 0.5 is divided into two parts, the refrigerant circulation flow path 210 is divided into two parts, and then divided into two parts. Each part is composed of one energy storage system 1, with a total of 8 battery modules. The energy storage system 1 with a power of 0.25 is composed of one direct cooling system, and the refrigerant circulation flow path 210 is divided into two parts, and then divided into two parts, and then divided into two parts, with a total of 8 battery modules.

[0044] In some specific embodiments of the present invention, Figure 2 As shown, each heat exchanger 212 is provided with a liquid inlet 2121 and a liquid outlet 2122 connected to the pipeline of the refrigerant circulation flow circuit 210 , and the liquid inlet 2121 and the liquid outlet 2122 both extend horizontally toward the cabinet door 120 .

[0045] The horizontal extension structure of the liquid inlet 2121 and the liquid outlet 2122 makes the connecting pipe more concise, can effectively reduce the bends and connection points of the pipe, and reduces the difficulty of installation and maintenance. The horizontally extended liquid inlet and outlet can reduce the resistance of the fluid when flowing in the pipe, improve the flow efficiency of the refrigerant, and thus improve the overall performance of the heat exchanger 212.

[0046] In some specific embodiments of the present invention, Figure 4 As shown, the heat dissipation module 213 is located at the bottom of the cabinet door 120 , and the heat dissipation module 213 is provided with a heat dissipation inlet 2133 and a heat dissipation outlet 2134 connected to the pipeline of the refrigerant circulation flow path 210 , and the heat dissipation inlet 2133 and the heat dissipation outlet 2134 are both located below the heat exchanger 212 .

[0047] Placing the heat dissipation module 213 at the bottom of the cabinet door 120 can utilize the principle of natural convection to allow hot air to rise naturally and cool air to enter from below, thereby improving the heat exchange efficiency and dissipating heat more effectively. The heat dissipation inlet 2133 and the heat dissipation outlet 2134 are both located below the heat exchanger 212, ensuring that the refrigerant circulation flow path 210 can more effectively take away heat, reduce the overall temperature of the energy storage system 1, and prevent the performance of the energy storage system 1 from being degraded due to overheating. Placing the heat dissipation module 213 at the bottom of the cabinet door 120 reduces the occupancy of the upper space, and more equipment or components can be arranged above the cabinet 110, thereby improving the overall space utilization.

[0048] In some specific embodiments of the present invention, the thickness of the heat dissipation module 213 is ≤200 mm, the width of the compressor assembly 211 is ≤200 mm, and the height of the compressor assembly 211 is ≤350 mm. The heat dissipation module 213 is installed at the cabinet door 120 of the cabinet 100. Controlling the thickness range of the heat dissipation module 213 can reduce the thickness of the energy storage system 1, thereby making the energy storage system 1 more convenient to transport and reducing logistics costs.

[0049] The width of the compressor assembly 211 is limited to less than or equal to 200 mm, and the height is limited to less than or equal to 350 mm, so as to ensure that the compressor assembly 211 can better adapt to the internal space of the cabinet 100, improve the space utilization rate inside the cabinet 100, and ensure that there is space inside the cabinet 100 for arranging other components.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy storage system, characterized in that: include: A cabinet, comprising a cabinet body and a cabinet door; A battery system, wherein the battery system is installed in the cabinet; A heat exchange module, wherein the heat exchange module has a refrigerant circulation flow path, and the refrigerant circulation flow path includes at least a compressor assembly, a heat exchanger, and a heat dissipation module. The compressor assembly and the heat exchanger are located in the cabinet, the heat exchanger is arranged corresponding to the battery module of the battery system, and the heat dissipation module is installed on the cabinet door.

2. The energy storage system according to claim 1, characterized in that: The heat exchanger is a direct cooling heat sink, which is arranged corresponding to the batteries of the battery system and the batteries are located on two opposite sides of the direct cooling heat sink.

3. The energy storage system according to claim 1, characterized in that: The battery system includes a first battery system and a second battery system, the first battery system includes a plurality of first battery modules, and the second battery system includes a plurality of second battery modules; The heat exchangers corresponding to the plurality of the first battery modules, the heat exchangers corresponding to the plurality of the second battery modules, the compressor assembly and the heat dissipation module are connected to form the refrigerant circulation flow path.

4. The energy storage system according to claim 3, characterized in that: The heat dissipation module includes a first heat dissipation module and a second heat dissipation module, the first heat dissipation module and the second heat dissipation module are both connected to the compressor assembly, the first heat dissipation module is connected to the heat exchanger corresponding to the first battery module, and the second heat dissipation module is connected to the heat exchanger corresponding to the second battery module.

5. The energy storage system according to claim 4, characterized in that: The cabinet door includes a first cabinet door and a second cabinet door, and the first cabinet door and the second cabinet door are a double-door structure. The first heat dissipation module is installed on the first cabinet door, and the second heat dissipation module is installed on the second cabinet door.

6. The energy storage system according to claim 4, characterized in that: The compressor assembly is located between the first heat dissipation module and the second heat dissipation module. The side of the compressor assembly facing the cabinet door is constructed with a first refrigerant outlet and a first refrigerant inlet, a second refrigerant outlet and a second refrigerant inlet. The first refrigerant inlet and the first refrigerant outlet are connected to the first heat dissipation module, and the second refrigerant inlet and the second refrigerant outlet are connected to the second heat dissipation module.

7. The energy storage system according to claim 3, characterized in that: The first battery modules are arranged in multiple layers, and the first battery modules of each layer are arranged in pairs on both sides of the cabinet; The second battery modules are arranged in multiple layers, and the second battery modules in each layer are arranged in pairs on both sides of the cabinet.

8. The energy storage system according to claim 1, characterized in that: Each of the heat exchangers is provided with a liquid inlet and a liquid outlet connected to the pipeline of the refrigerant circulation flow path, and the liquid inlet and the liquid outlet both extend horizontally toward the cabinet door.

9. The energy storage system according to claim 1, characterized in that: The heat dissipation module is located at the bottom of the cabinet door. The heat dissipation module is provided with a heat dissipation inlet and a heat dissipation outlet connected to the pipeline of the refrigerant circulation flow path. The heat dissipation inlet and the heat dissipation outlet are both located below the heat exchanger.

10. The energy storage system according to claim 1, characterized in that: The thickness of the heat dissipation module is ≤200 mm, the width of the compressor assembly is ≤200 mm, and the height of the compressor assembly is ≤350 mm.

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