Energy storage device with two-phase flow immersed heat dissipation structure

Abstract

The utility model discloses an energy storage device with a two-phase flow immersed heat dissipation structure, which comprises an energy storage battery cabinet, an energy storage battery pack, a circulating cooling device and a condenser, and a waterproof ventilation assembly dividing the interior of the energy storage battery cabinet into a lower sealing cavity and an upper sealing cavity is arranged in the energy storage battery cabinet. The energy storage battery cabinet is provided with a liquid phase inlet and a liquid phase outlet which are communicated with the lower sealing cavity and a gas phase outlet communicated with the upper sealing cavity, the energy storage battery pack is arranged in the lower sealing cavity, and a cold liquid outlet of the circulating cooling device is connected with the liquid phase inlet through a water pipe. The gas phase outlet is connected with an inlet of the condenser through a gas pipe, and the liquid phase outlet and an outlet of the condenser are respectively connected with a reflux inlet of the circulating cooling device through water pipes; by adopting the technical scheme, the heat dissipation and cooling effects are stronger, the temperature uniformity is better, the risk of combustion or explosion of the energy storage battery pack is effectively reduced, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to heat dissipation of energy storage batteries, and in particular to an energy storage device with a two-phase flow immersion heat dissipation structure. Background Art

[0002] Energy storage batteries generate a lot of heat during the charging and discharging process. If effective heat dissipation and cooling measures are not taken, there will be a risk of combustion or explosion. Existing energy storage battery cooling methods generally use air cooling or indirect liquid cooling. Air cooling mainly uses air conditioning for cooling, and the cooling effect is limited. Indirect liquid cooling uses a copper cooling plate filled with circulating cooling liquid to contact the energy storage battery to take away heat. This cooling method only cools the outside of the energy storage battery and cannot achieve comprehensive cooling. The cooling effect is not very ideal. Utility Model Content

[0003] In order to overcome the existing technical defects and solve the technical problem that the existing energy storage battery has a poor cooling effect, the purpose of the utility model is to provide an energy storage device with a two-phase flow immersion heat dissipation structure to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0005] According to one aspect of the utility model, an energy storage device with a two-phase flow immersion heat dissipation structure is designed, comprising: an energy storage battery cabinet, an energy storage battery pack, a circulating cooling device and a condenser, wherein the energy storage battery cabinet is provided with a waterproof and breathable component which divides the interior thereof into a lower sealed chamber and an upper sealed chamber, the energy storage battery cabinet is provided with a liquid phase inlet and a liquid phase outlet which are communicated with the lower sealed chamber, and a gas phase outlet which is communicated with the upper sealed chamber, the energy storage battery pack is arranged in the lower sealed chamber, the cold liquid outlet of the circulating cooling device is connected with the liquid phase inlet through a water pipe, the gas phase outlet is connected with the inlet of the condenser through an air pipe, and the liquid phase outlet and the outlet of the condenser are respectively connected with the reflux port of the circulating cooling device through water pipes.

[0006] By adopting the above technical scheme, the coolant can be input into the lower sealed cavity of the energy storage battery cabinet through the circulating cooling device and circulated, so that the energy storage battery group is directly immersed in the coolant, and the circulating flow of the coolant is used to take away the heat generated by the energy storage battery group, thereby realizing heat dissipation and cooling of the energy storage battery group. Compared with the traditional cooling method, the heat dissipation and cooling effect is stronger and the temperature uniformity is better, which effectively reduces the risk of combustion or explosion of the energy storage battery group and improves the safety; in addition, by arranging a waterproof and breathable component in the energy storage battery cabinet, the coolant can be blocked from entering the upper sealed cavity. When the coolant in the lower sealed cavity is heated to form hot steam, the hot steam can smoothly enter the upper sealed cavity through the waterproof and permeable component, and then enter the condenser through the air pipe to condense into liquid, and then input to the circulating cooling device through the water pipe for recycling, thereby realizing cooling of the generated hot steam, preventing the hot steam inside the energy storage battery cabinet from being unable to be processed, causing excessive internal pressure to cause leakage and cause failure, and ensuring that the cooling of the energy storage battery group is not affected.

[0007] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0008] In some embodiments, the waterproof and breathable component includes an isolation plate and a waterproof and breathable membrane, the isolation plate is provided with a plurality of through holes extending vertically, the isolation plate is fixedly connected to the energy storage battery cabinet, and the waterproof and breathable membrane is provided on the isolation plate and covers all the through holes on the isolation plate.

[0009] In some embodiments, the energy storage battery cabinet includes a cooling bottom plate, a cabinet body sealed and fixed on the cooling bottom plate, and a cover sealed and fixed on the top of the cabinet body. The cooling bottom plate has a receiving cavity inside, and a plurality of strip holes are arranged on the top to connect the receiving cavity with the lower sealed cavity. The liquid phase inlet is arranged on the cooling bottom plate and connected with the receiving cavity. The energy storage battery pack is mainly composed of a plurality of battery cells arranged at intervals, and the gaps between adjacent battery cells correspond to the upper and lower corresponding arrangement of one of the strip holes. Thus, the coolant output from the strip holes can enter the gaps between adjacent battery cells and contact the battery cells, and can take away a large amount of heat, further improving the cooling effect of the battery cells.

[0010] In some embodiments, the height of the liquid phase outlet is higher than the top height of the energy storage battery pack.

[0011] In some embodiments, a connecting plate is provided on the inner side wall of the energy storage battery cabinet, and the isolation plate is fixedly connected to the connecting plate.

[0012] In some embodiments, the energy storage battery packs are provided in four groups, and the battery cells in each group of energy storage battery packs are arranged at intervals in the longitudinal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of an energy storage device with a two-phase flow immersion heat dissipation structure according to an embodiment of the present invention, wherein arrows in the figure indicate the flow directions of condensate and hot steam;

[0014] Figure 2 It is a structural schematic diagram of the energy storage battery cabinet;

[0015] Figure 3 This is a schematic diagram of the explosion structure of the energy storage battery cabinet;

[0016] Reference numerals:

[0017] 1. Energy storage battery cabinet; 11. Lower sealed cavity; 12. Upper sealed cavity; 13. Liquid phase inlet; 14. Liquid phase outlet; 1a. Cooling bottom plate; 1a1. Strip hole; 1b. Cabinet body; 1b1. Connecting plate; 1c. Cover; 15. Gas phase outlet; 2. Energy storage battery pack; 3. Circulating cooling device; 4. Condenser; 5. Waterproof and breathable component. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0021] refer to Figures 1 to 3 As shown, the utility model provides an energy storage device with a two-phase flow immersion heat dissipation structure, comprising: an energy storage battery cabinet 1, an energy storage battery group 2, a circulating cooling device 3 and a condenser 4.

[0022] The energy storage battery cabinet 1 is provided with a waterproof and breathable component 5 which divides the interior of the energy storage battery cabinet 1 into a lower sealed chamber 11 and an upper sealed chamber 12. The energy storage battery cabinet 1 is provided with a liquid phase inlet 13 and a liquid phase outlet 14 which are communicated with the lower sealed chamber 11, and a gas phase outlet 15 which is communicated with the upper sealed chamber 12. The energy storage battery cabinet 1 includes a cooling bottom plate 1a, a cabinet body 1b and a cover 1c. The cooling bottom plate 1a is sealed and fixedly connected to the bottom of the cabinet body 1b, and the cover 1c is sealed and fixedly connected to the top of the cabinet body 1b, so that the energy storage battery cabinet 1 forms a sealed structure. The cooling bottom plate 1a has a receiving cavity inside, and the top is provided with a gas phase outlet 15. The strip hole 1a1 connects the accommodating chamber with the lower sealing chamber 11, the liquid phase inlet 13 is arranged on the cooling bottom plate 1a and is connected with the accommodating chamber, the liquid phase outlet 14 and the gas phase outlet 15 are arranged on the cabinet body 1b, the waterproof and breathable component 5 includes an isolation plate and a waterproof and breathable membrane, and a plurality of through holes that pass through the isolation plate are arranged, and the through holes are circular holes, strip holes, rectangular holes, etc., and connecting plates 1b1 are arranged on the side walls around the inside of the energy storage battery cabinet 1, and the isolation plate is fixedly connected to the connecting plate 1b1, and the waterproof and breathable membrane is arranged on the top or bottom of the isolation plate and covers all the through holes on the isolation plate.

[0023] The energy storage battery group 2 is arranged in the lower sealed cavity 11. The energy storage battery group 2 is provided with one or two or three or four or more groups. In this embodiment, it is preferred that the energy storage battery group 2 is arranged with four groups at intervals in the horizontal direction. Each energy storage battery group 2 is mainly composed of a plurality of battery cells arranged at intervals in the longitudinal direction. The plurality of battery cells in each energy storage battery group 2 are bound together by straps. There are vertical strip blocks between adjacent battery cells to keep a gap between them. The gap between adjacent battery cells corresponds to a strip hole 1a1 on the cooling bottom plate 1a. The bottom of the energy storage battery group 2 is in contact with the cooling bottom plate 1a or maintains a certain gap, which is set as needed.

[0024] The height of the liquid phase outlet 14 is higher than the top of the energy storage battery group 2 .

[0025] The circulating cooling device 3 is a conventional circulating oil cooling device or a circulating water cooling device, etc. The cold liquid outlet of the circulating cooling device 3 is connected to the liquid phase inlet 13 through a water pipe, the gas phase outlet 15 is connected to the inlet of the condenser 4 through an air pipe, and the liquid phase outlet 14 and the outlet of the condenser 4 are respectively connected to the reflux port of the circulating cooling device 3 through water pipes. When the circulating cooling device 3 is started, the coolant output from its cold liquid outlet enters the accommodating cavity inside the cooling base plate 1a through the water pipe and the liquid phase inlet 13, and then the coolant passes through the strip hole 1a1 into the lower sealed cavity 11, and then the coolant can pass through the gaps between adjacent battery cells on the energy storage battery pack 2 and flow out from the upper gaps of the energy storage battery pack 2, and the coolant in the lower sealed cavity 11 is output from the liquid phase outlet 14 and flows back to the circulating cooling device 3 through the water pipe, so as to realize the circulation of the coolant, and then the coolant in the lower sealed cavity 11 is heated to form hot steam, and the hot steam can pass through the waterproof and permeable component into the upper sealed cavity 12, and then enter the condenser 4 through the air pipe to condense into liquid, and then be input into the circulating cooling device 3 through the water pipe for recycling.

[0026] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An energy storage device with a two-phase flow immersion heat dissipation structure, characterized in that: include: An energy storage battery cabinet (1), an energy storage battery group (2), a circulating cooling device (3) and a condenser (4); the energy storage battery cabinet (1) is provided with a waterproof and breathable component (5) which divides the interior of the energy storage battery cabinet into a lower sealed chamber (11) and an upper sealed chamber (12); the energy storage battery cabinet (1) is provided with a liquid phase inlet (13) and a liquid phase outlet (14) which are communicated with the lower sealed chamber (11), and a gas phase outlet (15) which is communicated with the upper sealed chamber (12); the energy storage battery group (2) is arranged in the lower sealed chamber (11); the cold liquid outlet of the circulating cooling device (3) is connected to the liquid phase inlet (13) through a water pipe; the gas phase outlet (15) is connected to the inlet of the condenser (4) through an air pipe; the liquid phase outlet (14) and the outlet of the condenser (4) are respectively connected to the reflux port of the circulating cooling device (3) through water pipes.

2. The energy storage device with a two-phase flow immersion heat dissipation structure according to claim 1, characterized in that: The waterproof breathable component (5) comprises an isolation plate and a waterproof breathable membrane. The isolation plate is provided with a plurality of through holes extending vertically therethrough. The isolation plate is fixedly connected to the energy storage battery cabinet (1). The waterproof breathable membrane is provided on the isolation plate and covers all the through holes on the isolation plate.

3. The energy storage device with a two-phase flow immersion heat dissipation structure according to claim 1, characterized in that: The energy storage battery cabinet (1) comprises a cooling base plate (1a), a cabinet body (1b) sealed and fixedly connected to the cooling base plate (1a), and a cover (1c) sealed and fixedly connected to the top of the cabinet body (1b); the cooling base plate (1a) has a receiving cavity inside, and a plurality of strip holes (1a1) are arranged on the top to connect the receiving cavity with a lower sealed cavity (11); the liquid phase inlet (13) is arranged on the cooling base plate (1a) and is connected to the receiving cavity; the energy storage battery group (2) is mainly composed of a plurality of battery cells arranged at intervals, and the gaps between adjacent battery cells are arranged correspondingly to one of the strip holes (1a1) above and below.

4. The energy storage device with a two-phase flow immersion heat dissipation structure according to claim 1, characterized in that: The height of the liquid phase outlet (14) is higher than the top height of the energy storage battery group (2).

5. The energy storage device with a two-phase flow immersion heat dissipation structure according to claim 2, characterized in that: The inner side wall of the energy storage battery cabinet (1) is provided with a connecting plate (1b1), and the isolation plate is fixedly connected to the connecting plate (1b1).

6. The energy storage device with a two-phase flow immersion heat dissipation structure according to claim 1, characterized in that: The energy storage battery packs (2) are provided in four groups, and the battery cells in each group of energy storage battery packs (2) are arranged at intervals in the longitudinal direction.

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