Energy-storage fully-immersed battery pack for data center

Abstract

The utility model provides an energy storage fully-immersed battery pack for a data center, which belongs to the technical field of liquid cooling heat dissipation and comprises a lower shell and an upper cover detachably connected to the top of the lower shell in a sealing manner. The device further comprises a liquid inlet, a liquid outlet, a bottom flow channel, a top flow channel and a gap flow channel. The liquid inlets are formed in two corners of the bottom of the front end of the lower shell; the liquid outlets are formed in two corners of the top of the front end of the lower shell; the bottom runner is arranged at the bottom in the lower shell and is communicated with the two liquid inlets; the top runner is arranged at the top in the lower shell and is communicated with the two liquid outlets; and the gap flow channels are arranged between the adjacent battery cells and are communicated between the bottom flow channel and the top flow channel. Liquid is fed through the liquid inlets in the two corners of the bottom of the front end of the lower shell and then pumped out from the liquid outlets in the two corners of the top flow channel, so that the liquidity of the liquid in each dead corner in the lower shell is higher, and the overall circulation effect of cooling liquid is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid cooling and heat dissipation, and more specifically, relates to an energy storage fully immersed battery pack for a data center. Background Art

[0002] With the continuous growth of global energy demand and the rapid development of renewable energy, the energy storage industry is gradually becoming a vital component of the energy sector. As a key technology for energy conversion and storage, energy storage technology can address the volatility and intermittency of renewable energy, improve energy utilization efficiency, enhance energy supply and security, reduce dependence on traditional energy sources, and promote the transformation and upgrading of the energy structure.

[0003] Currently, energy storage thermal management primarily involves air cooling and liquid cooling. Air cooling utilizes natural wind pressure or an air conditioning system to dissipate heat from the battery. Another battery thermal management technology within energy storage systems is cold plate liquid cooling. This involves circulating a coolant through the flow channels of a cold plate. The bottom of the battery cell contacts the cold plate, transferring heat to the coolant via a heat transfer medium. The coolant then removes the heat.

[0004] Immersion liquid cooling, a key category of liquid cooling, is also gaining industry attention. Immersion liquid cooling, introduced into the energy storage field, involves completely immersing battery cells in an insulating, flame-retardant, non-toxic, and heat-dissipating liquid. This liquid removes heat, thereby achieving a higher level of thermal management. In addition to serving as a temperature control medium, the coolant can also serve as a firefighting fluid for energy storage systems. When a battery experiences thermal runaway, it removes heat while isolating flammable materials like oxygen, preventing further spread of the thermal runaway. This unifies temperature control and firefighting, forming the most significant feature of this technology.

[0005] Existing submerged battery packs typically feature a liquid inlet and outlet at the front of the housing, with bottom, side, and top channels inside the housing to circulate the coolant and dissipate heat. However, the housing contains numerous blind spots, resulting in poor coolant circulation. Utility Model Content

[0006] The purpose of the utility model is to provide a fully immersed energy storage battery pack for a data center, so as to solve the technical problem of poor cooling liquid circulation effect in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: to provide a fully submerged energy storage battery pack for a data center, comprising a lower shell and an upper cover detachably and hermetically connected to the top of the lower shell, and further comprising:

[0008] Liquid inlets are arranged at two corners of the bottom front end of the lower shell;

[0009] Liquid outlets are arranged at two corners of the top front end of the lower shell;

[0010] A bottom flow channel, arranged at the bottom of the lower shell and connected to the two liquid inlets;

[0011] A top flow channel, disposed at the top of the lower shell and connected to the two liquid outlets; and

[0012] The gap flow channel is provided between adjacent battery cells, and the gap flow channel is connected between the bottom flow channel and the top flow channel.

[0013] In combination with the above technical solution, in a possible implementation, the bottom flow channel is divided into a plurality of compartments along its flow direction.

[0014] In combination with the above technical solution, in one possible implementation, the fully submerged energy storage battery pack for a data center further includes:

[0015] A liquid inlet concentration chamber is provided at the inner bottom of the front end of the lower shell, and a plurality of diversion holes are connected between the liquid inlet concentration chamber and each of the compartments; and

[0016] The liquid outlet concentration cavity is arranged at the top of the front end of the lower shell, and the diversion holes are evenly connected between the liquid outlet concentration cavity and the top flow channel.

[0017] In combination with the above technical solution, in a possible implementation, the gap flow channel is further provided between the battery core and the inner wall of the lower shell.

[0018] In combination with the above technical solution, in a possible implementation, the fully submerged energy storage battery pack for a data center further includes inter-cell foam, which is arranged between adjacent cells.

[0019] In combination with the above technical solution, in a possible implementation, the foam between the battery cells is located in the corresponding gap flow channel.

[0020] In combination with the above technical solution, in a possible implementation, a plurality of temperature sensors are distributed in the lower shell.

[0021] The beneficial effect of the fully immersed energy storage battery pack for data centers provided by the present invention is that, compared with the prior art, the present invention introduces liquid through the liquid inlets located at the two corners of the bottom front end of the lower shell, and the liquid enters the top flow channel from the bottom flow channel through various gap flow channels, and is then extracted from the liquid outlets at the two corners of the top flow channel, so that the liquid fluidity in the dead corners of the lower shell is greater, thereby improving the overall circulation effect of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 A schematic diagram of the structure of a fully submerged energy storage battery pack for a data center provided by an embodiment of the present utility model;

[0024] Figure 2 A side cross-sectional view of a fully submerged energy storage battery pack for a data center provided by an embodiment of the present utility model;

[0025] Figure 3 A front cross-sectional view of a compartment provided in an embodiment of the present utility model;

[0026] Figure 4 A front cross-sectional view of a diversion hole provided in an embodiment of the present utility model;

[0027] Figure 5 This is a structural diagram of the temperature sensor location provided by an embodiment of the present utility model.

[0028] Among them, the reference numerals in the figures are as follows:

[0029] 1. Lower shell; 11. Temperature sensor; 2. Upper cover; 3. Liquid inlet; 4. Liquid outlet; 5. Bottom flow channel; 51. Partition cavity; 6. Top flow channel; 7. Gap flow channel; 71. Foam between battery cells; 8. Liquid inlet concentration cavity; 81. Diversion hole; 9. Liquid outlet concentration cavity. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described are only part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The fully submerged energy storage battery pack for a data center provided by the present invention is now described.

[0032] like Figures 1 to 2As shown, one embodiment of the utility model provides a fully immersed energy storage battery pack for a data center, comprising a lower shell 1 and an upper cover 2 detachably and sealedly connected to the top of the lower shell 1, and also comprising a liquid inlet 3, a liquid outlet 4, a bottom flow channel 5, a top flow channel 6 and a gap flow channel 7; the liquid inlet 3 is arranged at the two corners of the bottom front end of the lower shell 1; the liquid outlet 4 is arranged at the two corners of the top front end of the lower shell 1; the bottom flow channel 5 is arranged at the bottom inner bottom of the lower shell 1 and is connected to the two liquid inlets 3; the top flow channel 6 is arranged at the top inner top of the lower shell 1 and is connected to the two liquid outlets 4; the gap flow channel 7 is arranged between adjacent battery cells, and the gap flow channel 7 is connected between the bottom flow channel 5 and the top flow channel 6.

[0033] The present embodiment provides a fully submerged energy storage battery pack for a data center. Compared with the prior art, liquid is introduced through a liquid inlet 3 located at the two corners of the bottom front end of the lower shell 1. The liquid enters the top flow channel 6 from the bottom flow channel 5 through various gap flow channels 7, and is then extracted from the liquid outlet 4 at the two corners of the top flow channel 6. This makes the liquid fluidity in the dead corners of the lower shell 1 greater, thereby improving the overall circulation effect of the coolant.

[0034] like Figure 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0035] The bottom flow channel 5 is divided into a plurality of compartments 51 along the flow direction thereof.

[0036] The liquid entering the bottom flow channel 5 is divided into multiple compartments 51 and then flows from the compartments 51 to the corresponding gap flow channels 7, thereby restricting the flow path of the liquid to achieve better heat exchange efficiency.

[0037] like Figures 3 and 4 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0038] The fully immersed energy storage battery pack for data centers also includes a liquid inlet concentration chamber 8 and a liquid outlet concentration chamber 9. The liquid inlet concentration chamber 8 is arranged at the bottom inner front end of the lower shell 1, and multiple diversion holes 81 are connected between the liquid inlet concentration chamber 8 and each compartment 51; the liquid outlet concentration chamber 9 is arranged at the top inner front end of the lower shell 1, and the diversion holes 81 are also evenly connected between the liquid outlet concentration chamber 9 and the top flow channel 6.

[0039] After the liquid enters the liquid inlet concentration chamber 8 from the liquid inlet 3, it enters the corresponding compartment 51 through each diversion hole 81, achieving the effect of uniform diversion of the liquid and further improving the liquid flow circulation effect; the two liquid outlets 4 extract liquid from the liquid outlet concentration chamber 9, so that the liquid in the top flow channel 6 can evenly enter the liquid outlet concentration chamber 9 from each diversion hole 81, thereby improving the liquid flow discharge efficiency at each position in the top flow channel 6.

[0040] like Figures 2 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0041] The gap flow channel 7 is also provided between the battery cell and the inner wall of the lower shell 1, which can wrap the battery cell more evenly and circulate the heat.

[0042] like Figures 2 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0043] The fully submerged energy storage battery pack for a data center further includes inter-cell foam 71 , which is disposed between adjacent cells.

[0044] Furthermore, the inter-cell foam 71 is located in the corresponding gap flow channel 7 .

[0045] On the one hand, the foam 71 between the battery cells can exert force on the surface of the battery cells to improve the safety between the battery cells. On the other hand, it can guide the flowing liquid and enable the liquid to better contact the battery cells to dissipate heat, thereby improving the circulating heat dissipation effect.

[0046] like Figure 5 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0047] A plurality of temperature sensors 11 are distributed in the lower housing 1. The temperature sensors 11 can monitor the temperature of multiple points in the lower housing 1, thereby achieving safer and more reliable operation of the battery pack.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fully submerged energy storage battery pack for a data center, comprising a lower shell (1) and an upper cover (2) detachably and hermetically connected to the top of the lower shell (1), characterized in that: Also includes: Liquid inlets (3) are arranged at two corners of the bottom front end of the lower housing (1); Liquid outlets (4) are arranged at two corners of the top front end of the lower shell (1); A bottom flow channel (5) is provided at the bottom of the lower shell (1) and is in communication with the two liquid inlets (3); A top flow channel (6) is provided at the top of the lower shell (1) and is in communication with the two liquid outlets (4); and A gap flow channel (7) is provided between adjacent battery cells, and the gap flow channel (7) is connected between the bottom flow channel (5) and the top flow channel (6).

2. The fully submerged energy storage battery pack for a data center according to claim 1, characterized in that: The bottom flow channel (5) is divided into a plurality of compartments (51) along its flow direction.

3. The fully submerged energy storage battery pack for a data center according to claim 2, characterized in that: Also includes: A liquid inlet concentration chamber (8) is provided at the inner bottom of the front end of the lower shell (1), and a plurality of diversion holes (81) are connected between the liquid inlet concentration chamber (8) and each of the compartments (51); as well as The liquid outlet concentration cavity (9) is arranged at the top of the front end of the lower shell (1), and the diversion hole (81) is evenly connected between the liquid outlet concentration cavity (9) and the top flow channel (6).

4. The fully submerged energy storage battery pack for a data center according to claim 1, characterized in that: The gap flow channel (7) is also provided between the battery core and the inner wall of the lower housing (1).

5. The fully submerged energy storage battery pack for a data center according to claim 1, characterized in that: It also includes inter-cell foam (71), which is arranged between adjacent cells.

6. The fully submerged energy storage battery pack for a data center according to claim 5, characterized in that: The inter-cell foam (71) is located in the corresponding gap flow channel (7).

7. A fully submerged energy storage battery pack for a data center according to any one of claims 1 to 6, characterized in that: A plurality of temperature sensors (11) are distributed in the lower housing (1).

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