Distributed energy storage cabinet battery heat dissipation device

Abstract

The utility model provides a distributed energy storage cabinet battery heat dissipation device which is characterized in that a plurality of battery cabinets are arranged in an energy storage cabinet, each battery cabinet comprises a plurality of battery assemblies and a heat dissipation structure, supporting rails are arranged in the battery cabinets, the supporting rails are used for installing the battery assemblies in the battery cabinets, and heat dissipation layers are arranged below the battery assemblies. A refrigerant layer is arranged in the heat dissipation layer, a refrigerant layer inlet channel and a refrigerant layer outlet channel are arranged in the refrigerant layer, a refrigerant heat dissipation exchange pipeline is arranged between the refrigerant layer inlet channel and the refrigerant layer outlet channel, a refrigerant channel is arranged in a rear shell of the battery cabinet, and a refrigerant switch is arranged at a connecting port of the refrigerant layer inlet channel and the refrigerant channel. The refrigerant layer is used for controlling flowing of refrigerants in the refrigerant layer. The heat dissipation device can be started regionally and the operation effect of the heat dissipation device can be controlled according to different temperature changes of different regions in the distributed energy storage cabinet and the current state of the system.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy storage, and in particular to a distributed energy storage cabinet battery heat dissipation device. Background Art

[0002] High temperature can cause battery capacity degradation, shorten lifespan, and even cause safety hazards. With the widespread application of distributed energy storage systems, due to the large number of battery components in distributed energy storage systems, traditional heat dissipation arrangements have the problem of dispersed structure and relatively high cost. Due to the load differences between battery components, the heat dissipation requirements of each battery component at the same time are also different. The problem of differential heat dissipation of each battery component in the distributed energy storage system while taking into account the cost has attracted widespread attention. Therefore, the development of an efficient differentiated battery heat dissipation device is crucial to improving the performance of distributed energy storage systems. Summary of the invention

[0003] The technical problem to be solved by the utility model is the differential heat dissipation problem caused by different loads between battery components of a distributed energy storage cabinet, and a distributed energy storage cabinet battery heat dissipation device is provided.

[0004] The utility model provides a distributed energy storage cabinet battery heat dissipation device, wherein a plurality of battery cabinets are arranged inside the energy storage cabinet, the battery cabinets include a plurality of battery assemblies and a heat dissipation structure, a support rail is arranged inside the battery cabinet, the support rail is used to install the battery assemblies in the battery cabinet, a heat dissipation layer is arranged below the battery assemblies, a refrigerant layer is arranged in the heat dissipation layer, a refrigerant layer inlet channel and a refrigerant layer outlet channel are arranged in the refrigerant layer, a refrigerant heat dissipation exchange pipeline is arranged between the refrigerant layer inlet channel and the refrigerant layer outlet channel, a refrigerant channel is arranged in the rear shell of the battery cabinet, a refrigerant switch is arranged at the connection port of the refrigerant layer inlet channel and the refrigerant channel, and is used to control the flow of the refrigerant in the refrigerant layer, and the refrigerant layer outlet is correspondingly arranged at the connection port of the refrigerant layer outlet channel and the refrigerant channel.

[0005] A refrigerant pump is provided inside the battery cabinet, and is used to push the refrigerant to flow in the system.

[0006] The refrigerant heat dissipation exchange pipelines are multiple pipelines connected to the refrigerant layer inlet channel and the refrigerant layer outlet channel. The pipelines are made of heat conductive material, and heat conductive agents are provided at the contact positions with the battery components.

[0007] A refrigerant channel opening is provided in the rear shell of the battery cabinet, and the refrigerant channel opening is used to shrink the refrigerant channel.

[0008] The refrigerant channel is divided into an upward channel and a downward channel by a refrigerant partition.

[0009] A heat exchange device is provided in the rear shell of the battery cabinet, and the heat exchange device is used to transfer the absorbed heat to the refrigerant heat dissipation exchange pipeline for heat dissipation.

[0010] The technical effect of the utility model: the temperature of the battery will rise when charging and discharging, especially in the case of high-power discharge. The heat dissipation device should be able to start the heat dissipation device in different areas and control the operation effect of the heat dissipation device according to the different temperature changes in different areas of the distributed energy storage cabinet and the current state of the system. Improve battery performance and life. The heat dissipation device has a unique structure, effectively and differentially reduces the operating temperature of the battery, improves the overall efficiency of the energy storage cabinet, effectively improves the heat dissipation efficiency of the battery assembly, and ensures the performance and life of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings of the specification:

[0012] Figure 1 This is the internal layout diagram of the distributed energy storage cabinet of the utility model;

[0013] Figure 2 This is the layout diagram of the heat dissipation pipeline at the rear of the battery cabinet of the utility model;

[0014] Figure 3 This is a heat dissipation arrangement diagram below the battery of the battery cabinet of the utility model;

[0015] Figure 4 This is a front view of the battery cabinet of the utility model;

[0016] Figure 5 This is a schematic diagram of the distributed energy storage cabinet of the utility model.

[0017] Figure numerals: energy storage cabinet 1, battery cabinet 2, battery assembly 3, heat dissipation layer 4, refrigerant switch 5, refrigerant channel 6, battery assembly refrigerant layer 7, refrigerant pump 8, heat exchange equipment 9, battery cabinet rear shell 10, refrigerant layer outlet 11, refrigerant partition 12, refrigerant channel opening 13, support rail 14, battery assembly front end 15, circuit layer 16, refrigerant layer inlet channel 17, refrigerant layer outlet channel 18, refrigerant upward channel 19, refrigerant downward channel 20, refrigerant heat dissipation exchange pipeline 21. Implementation

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below with reference to the accompanying drawings. In order to make the purpose, technical solutions and advantages of the utility model more clear, the utility model is further described in detail below through the accompanying drawings and specific implementation examples.

[0019] The utility model provides a distributed energy storage cabinet battery heat dissipation device, wherein the energy storage cabinet includes multiple components, which work together to ensure the efficient operation of the system and the stability of the battery assembly. The following is a detailed description of the main components inside the energy storage cabinet, covering the energy storage cabinet, battery cabinet, battery assembly, heat dissipation layer, refrigerant switch, refrigerant channel, battery assembly refrigerant layer, refrigerant pump, heat exchange equipment, battery cabinet rear shell, refrigerant layer outlet, refrigerant partition, refrigerant channel opening, support rail, battery assembly front end, line layer, refrigerant layer inlet channel, refrigerant layer outlet channel, refrigerant up channel, refrigerant down channel, and refrigerant heat dissipation exchange pipeline.

[0020] The energy storage cabinet is the main body of the entire system and constitutes the core of the distributed energy storage system. A plurality of battery cabinets (2) are arranged inside the energy storage cabinet (1).

[0021] The battery cabinet (2) comprises a plurality of battery assemblies (3) and a heat dissipation structure. A support rail (14) arranged in the battery cabinet enables the battery assemblies to be stably installed in the battery cabinet.

[0022] The battery cabinet is responsible for providing support and protection for battery components to ensure the safety and stability of the system.

[0023] The battery assembly (3) is an energy storage unit of the battery cabinet. In order to prevent the battery from overheating, a heat dissipation layer (4) is designed. A heat dissipation layer is arranged below each battery assembly. A refrigerant layer is arranged in the heat dissipation layer. The refrigerant in the refrigerant layer can be cold air or other cooling gas, or can be set as a cooling liquid. A refrigerant layer inlet channel 17 and a refrigerant layer outlet channel 18 are arranged in the refrigerant layer. A refrigerant heat dissipation exchange pipeline 21 is arranged between the refrigerant layer inlet channel 17 and the refrigerant layer outlet channel 18. The refrigerant heat dissipation exchange pipeline 21 is a plurality of pipelines connected to the refrigerant layer inlet channel 17 and the refrigerant layer outlet channel 18. The pipeline is made of heat conductive material and is in contact with the bottom of the battery assembly. A heat conductive agent such as silicone grease is arranged at the contact position between the pipeline and the battery assembly, so as to achieve a good heat dissipation effect. The heat dissipation layer effectively reduces the operating temperature of the battery assembly and improves its performance and life.

[0024] A refrigerant channel (6) is provided in the rear shell (10) of the battery cabinet, and the refrigerant channel is responsible for transferring refrigerant to achieve effective cooling of the battery components. The refrigerant channel (6) is provided in the rear shell (10) and is divided into an upward channel (19) and a downward channel (20) by a refrigerant partition 12, so that a refrigerant circulation is formed in the entire system. The refrigerant switch (5) is provided at the connection port between the refrigerant layer inlet channel 17 and the refrigerant channel (6), and is a key component of the refrigerant system. It is responsible for controlling the flow of refrigerant in the refrigerant layer. In turn, the cooling effect of a single battery pack is controlled. The refrigerant layer outlet (11) is provided at the connection port between the refrigerant layer outlet channel 18 and the refrigerant channel (6). The refrigerant pump (8) promotes the refrigerant to flow in the system and transfers the absorbed heat to the heat exchange device (9) for heat dissipation. The refrigerant channel opening (13) shrinks the refrigerant channel to facilitate the installation of the refrigerant pump (8) or the connection of the pipeline. It ensures that the refrigerant flows in the system in an orderly manner to achieve the best heat dissipation effect.

[0025] The battery assembly is provided with a battery assembly front end (15), and the energy storage cabinet is also provided with a circuit layer (16). The circuit layer is responsible for transmitting electric energy and ensuring the convergence of circuits between the battery cabinets. These structures form a closely connected network, realizing the coordinated operation of the internal and external components of the energy storage cabinet.

[0026] The interrelationships between the components inside the energy storage cabinet enable the entire distributed energy storage system to operate efficiently. When the battery components are working, the refrigerant system maintains their temperature through cooling to ensure battery performance. The energy storage cabinet provides support and protection to ensure the safe operation of the battery components.

[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A distributed energy storage cabinet battery heat dissipation device, wherein a plurality of battery cabinets (2) are arranged inside the energy storage cabinet (1), and the battery cabinet (2) comprises a plurality of battery assemblies (3) and a heat dissipation structure, characterized in that: A support rail (14) is provided in the battery cabinet (2), and the support rail (14) is used to install the battery assembly (3) in the battery cabinet. A heat dissipation layer (4) is provided below the battery assembly (3), and a refrigerant layer is provided in the heat dissipation layer (4). A refrigerant layer inlet channel (17) and a refrigerant layer outlet channel (18) are provided in the refrigerant layer, and a refrigerant heat dissipation exchange pipeline (21) is provided between the refrigerant layer inlet channel (17) and the refrigerant layer outlet channel (18). A refrigerant channel (6) is provided in the rear shell (10) of the battery cabinet (2), and a refrigerant switch (5) is provided at the connection port between the refrigerant layer inlet channel (17) and the refrigerant channel (6) to control the flow of the refrigerant in the refrigerant layer. The refrigerant layer outlet (11) is correspondingly provided at the connection port between the refrigerant layer outlet channel (18) and the refrigerant channel (6).

2. The distributed energy storage cabinet battery heat dissipation device according to claim 1 is characterized in that: A refrigerant pump (8) is arranged inside the battery cabinet (2), and the refrigerant pump (8) is used to push the refrigerant to flow in the system.

3. The distributed energy storage cabinet battery heat dissipation device according to claim 1 is characterized in that: The refrigerant heat dissipation exchange pipeline (21) is a plurality of pipelines connected to the refrigerant layer inlet channel (17) and the refrigerant layer outlet channel (18); the pipeline is made of a heat conductive material, and a heat conductive agent is provided at a contact position with the battery assembly (3).

4. The distributed energy storage cabinet battery heat dissipation device according to claim 2 is characterized in that: A refrigerant channel opening (13) is provided in the rear shell (10) of the battery cabinet (2), and the refrigerant channel opening (13) is used to shrink the refrigerant channel (6).

5. The distributed energy storage cabinet battery heat dissipation device according to claim 2, characterized in that: The refrigerant channel (6) is divided into an upward channel (19) and a downward channel (20) by a refrigerant partition (12).

6. The distributed energy storage cabinet battery heat dissipation device according to claim 1, characterized in that: A heat exchange device (9) is arranged in the rear shell (10) of the battery cabinet (2), and the heat exchange device (9) is used to transfer absorbed heat to the refrigerant heat dissipation exchange pipeline (21) for heat dissipation.

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