Energy storage container liquid cooling system and energy storage container

Abstract

The energy storage container liquid cooling system comprises a refrigerating machine, a liquid outlet pipe, a liquid return pipe and a plurality of batteries, the batteries are stacked to form a plurality of groups, the liquid outlet pipe comprises a plurality of liquid outlet branch pipes, the liquid outlet branch pipes comprise a plurality of liquid outlet branch pipes, and the liquid return pipe comprises a plurality of liquid return branch pipes. The liquid return branch pipe comprises a plurality of liquid return branch pipes, each battery is connected with one liquid outlet branch pipe and one liquid return branch pipe, the refrigerating machine is connected with the liquid outlet pipes and the liquid return pipes, and the refrigerating machine, the liquid outlet pipes, the batteries and the liquid return pipes form a circulation pipeline. The batteries are connected with the liquid outlet pipe and the liquid return pipe, so that cooling liquid of the refrigerating machine flows through the batteries, and each battery is cooled through liquid cooling circulation.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage containers, in particular to an energy storage container liquid cooling system and an energy storage container. Background Art

[0002] An energy storage container is an energy storage device that can store electrical energy and release it when needed, providing stable power support for various energy systems. The interior of the energy storage container is equipped with large-capacity batteries and corresponding control systems. When the batteries in the energy storage container are storing and releasing energy, the batteries will generate a lot of heat. The impact of high temperature on the battery is permanent, which will shorten the battery's service life and accelerate the aging of the battery. If the temperature is too high, the battery may also catch fire and explode. Therefore, general energy storage containers are equipped with heat dissipation devices. Existing energy storage containers all dissipate heat through air cooling. The two ends of the energy storage container are respectively equipped with a fan that blows air into the interior and an exhaust fan that exhausts air to the outside. However, air cooling requires the fan to generate strong wind, so the noise is relatively large. At the same time, air cooling reduces the temperature of the equipment by cooling the air. Therefore, the cooling effect of air cooling is greatly affected by the ambient temperature, especially in a high temperature environment, the air cooling effect is not good. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an energy storage container liquid cooling system and an energy storage container in response to the above technical requirements.

[0004] The utility model provides an energy storage container liquid cooling system and an energy storage container, comprising a refrigerator, a liquid outlet pipe, a liquid return pipe and a plurality of batteries, wherein the plurality of batteries are stacked to form a plurality of groups, the liquid outlet pipe comprises a plurality of liquid outlet branch pipes, the liquid outlet branch pipe comprises a plurality of liquid outlet branch pipes, the liquid return pipe comprises a plurality of liquid return branch pipes, the liquid return branch pipe comprises a plurality of liquid return branch pipes, each of the batteries is connected to a liquid outlet branch pipe and a liquid return branch pipe, the refrigerator is connected to the liquid outlet pipe and the liquid return pipe, and the refrigerator, the liquid outlet pipe, the batteries and the liquid return pipe form a circulation pipeline.

[0005] Furthermore, the liquid outlet pipe is located at the top of the battery pack, the liquid outlet branch pipe is located below the liquid outlet pipe and is vertically arranged, and several of the liquid outlet branch pipes are distributed along the length direction of the liquid outlet branch pipe. The liquid return pipe is located at the bottom of the battery pack, the liquid return branch pipe is located above the liquid return pipe and is vertically arranged, and several of the liquid return branch pipes are distributed along the length direction of the liquid return branch pipe. Each group of batteries corresponds to a liquid outlet branch pipe and a liquid return branch pipe.

[0006] Furthermore, the liquid outlet pipe and the liquid return pipe connected to the same battery are located at the same height.

[0007] Furthermore, a liquid storage tank is provided inside the battery, and the liquid outlet branch pipe and the liquid return branch pipe are both connected to the liquid storage tank.

[0008] Furthermore, the battery includes a cooling plate, which is located at the bottom of the battery, and the liquid storage tank is located inside the cooling plate.

[0009] Furthermore, the refrigeration plate includes a sealing plate and a bottom plate, the bottom plate includes a liquid inlet channel, a liquid outlet channel and a liquid storage tank, the sealing plate includes two connecting ports, the two connecting ports are respectively connected to the liquid inlet channel and the liquid outlet channel, and the liquid outlet branch pipe and the liquid return branch pipe are each connected to a connecting port.

[0010] Furthermore, the utility model discloses an energy storage container, including an energy storage container liquid cooling system, several mounting racks and a box body, the energy storage container liquid cooling system and the several mounting racks are located in the box body, the several mounting racks are arranged in parallel, the several batteries are placed between two adjacent mounting racks, and the liquid outlet pipe and the liquid return pipe are both installed at the outer end of the mounting rack.

[0011] Furthermore, the plurality of mounting racks are arranged into two rows, the numbers of the mounting racks in the two rows are different, and the refrigerator is installed in the row with the smaller number of mounting racks.

[0012] Furthermore, it includes a partition, which separates the interior of the box into a space that can accommodate the refrigerator, and the part of the box where the refrigerator is installed is provided with a mesh plate.

[0013] Furthermore, it includes a dehumidifying air conditioner, which is installed in the box.

[0014] Compared with related technologies, the energy storage container liquid cooling system and energy storage container provided by the present invention have the following beneficial effects:

[0015] 1. The utility model installs a liquid cooling system in the energy storage container. The coolant of the liquid cooling system is provided by a refrigerator, which is branched to each liquid outlet pipe through the liquid outlet pipe, and then flows into the liquid storage bin of each battery bottom plate through each liquid outlet branch pipe, so that each battery can be cooled individually. Each battery then flows the coolant into the return liquid branch pipe through the return liquid branch pipe. The return liquid branch pipes are collected in the return liquid pipe, and the coolant is returned to the refrigerator. A coolant circulation pipeline is formed among the refrigerator, the liquid outlet pipe, the battery, and the return liquid pipe. The utility model can cool each battery individually, has a better cooling effect on the battery, and can better ensure the battery life.

[0016] 2. The mounting racks in the energy storage container of the present invention are distributed in two rows, and the number of mounting racks in the two rows is different. The row with fewer mounting racks can be used to install the refrigerator and the electrical compartment, so that the refrigerator can be installed while the internal battery capacity of the energy storage container remains unchanged, making the internal structure layout more reasonable and compact. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of example one.

[0018] Figure 2 is a schematic diagram of the distribution structure of example one.

[0019] Figure 3 is a schematic diagram of Figure 2 is an enlarged view of A in the middle.

[0020] Figure 4 is a schematic diagram of the battery in example one.

[0021] Figure 5 is an exploded view of the battery in example one.

[0022] Figure 6 is a schematic diagram of the connection of the refrigeration plate with the liquid outlet branch pipe and the liquid return branch pipe in example one.

[0023] Figure 7 is a schematic diagram of example two.

[0024] Figure 8 is an internal structure diagram of example two.

[0025] Reference signs in the drawings: 1, refrigeration machine; 2, liquid outlet pipe; 21, liquid outlet sub-pipe; 211, liquid outlet branch pipe; 3, liquid return pipe; 31, liquid return sub-pipe; 311, liquid return branch pipe; 4, battery; 41, refrigeration plate; 42, sealing plate; 43, bottom plate; 431, liquid storage compartment; 432, liquid inlet passage; 433, liquid outlet passage; 44, connection port; 5, mounting frame; 6, dehumidification air conditioner; 7, partition plate; 8, box body. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The drawings show typical embodiments of the present application.

[0027] Example one:

[0028] As Figure 1 , Figure 2 , Figure 3As shown, this embodiment discloses a liquid cooling system for an energy storage container, including a refrigerator 1, a liquid outlet pipe 2, a liquid return pipe 3 and a plurality of batteries 4, wherein the plurality of batteries 4 are stacked to form a plurality of battery packs, the liquid outlet pipe 2 is located at the top of the battery pack, the liquid outlet pipe 2 includes a plurality of liquid outlet branch pipes 21, the liquid outlet branch pipe 21 is located below the liquid outlet pipe 2 and is vertically arranged, the liquid outlet branch pipe 21 includes a plurality of liquid outlet branch pipes 211, the plurality of liquid outlet branch pipes 211 are distributed along the length direction of the liquid outlet branch pipe 21, and each liquid outlet branch pipe 211 is connected to a corresponding battery 4, the liquid return pipe 3 is located at the bottom of the battery pack, the liquid return pipe 3 includes a plurality of liquid return branch pipes 31, the liquid return branch pipe 31 is located above the liquid return pipe 3 and is vertically arranged, the liquid return branch pipe 31 includes a plurality of liquid return branch pipes 311, the plurality of liquid return branch pipes 311 are distributed along the length direction of the liquid return branch pipe 31, and each liquid return branch pipe 3 11 is connected to a corresponding battery 4, and the liquid outlet branch 211 and the liquid return branch 311 of each battery 4 are connected. The refrigerator 1 is connected to the liquid outlet pipe 2 and the liquid return pipe 3. The refrigerator 1 provides cooling liquid, which is branched into each liquid outlet branch pipe 21 through the liquid outlet pipe 2, and then flows into each battery 4 through each liquid outlet branch pipe 211, so that each battery 4 can be cooled individually. Each battery 4 then flows the cooling liquid into the liquid return branch pipe 31 through the liquid return branch pipe 311, and each liquid return branch pipe 31 is collected in the liquid return pipe 3. The cooling liquid then flows back to the refrigerator 1 through the liquid return pipe 3. A cooling liquid circulation pipeline is formed among the refrigerator 1, the liquid outlet pipe 2, the battery 4, and the liquid return pipe 3, so that each battery 4 can be cooled individually, the cooling effect on the battery 4 is better, the life of the battery 4 can be better guaranteed, and the cooling effect will not be changed by the influence of the ambient temperature.

[0029] like Figure 1 、 Figure 2 、 Figure 3 As shown, more preferably, each battery pack corresponds to a liquid outlet branch pipe 21 and a liquid return branch pipe 31, the liquid outlet branch pipe 21 and the liquid return branch pipe 31 are respectively located on both sides of the battery pack, the liquid outlet branch pipe 211 and the liquid return branch pipe 311 connected to the same battery 4 are located at the same height, the battery 4 is provided with a liquid storage tank 431 inside, the battery 4 is provided with two connection ports 44, the liquid outlet branch pipe 211 and the liquid return branch pipe 311 are each connected to a connection port 44, and the connection port 44 is connected to The liquid storage tank 431 is connected, and the liquid outlet branch pipe 211 and the liquid return branch pipe 311 are both connected to the liquid storage tank 431. More preferably, the connection port 44 is an upwardly protruding pipe, and one end of the liquid outlet branch pipe 211 and the liquid return branch pipe 311 connected to the connection port 44 can be sleeved on the connection port 44, and the connection end of the liquid outlet branch pipe 211 and the liquid return branch pipe 311 is a sealed connection, and the coolant can flow from the liquid outlet branch pipe 211 into the liquid storage tank 431, and then flow out from the liquid return branch pipe 311.

[0030] like Figure 4 、 Figure 5 、 Figure 6As shown, more preferably, the battery 4 includes a cooling plate 41, the cooling plate 41 is located at the bottom of the battery 4, the upper end surface of the cooling plate 41 is tightly attached to and fixedly connected to the bottom surface of the battery 4, the liquid storage tank 431 is located in the cooling plate 41, and the position of the liquid storage tank 431 is located below the battery 4. The cooling plate 41 includes a sealing plate 42 and a bottom plate 43. The sealing plate 42 seals the upper end surface of the bottom plate 43 to form a sealed cavity for the liquid storage tank 431. The liquid storage tank 431 is separated from the battery 4 by the sealing plate 42. The coolant in the liquid storage tank 431 can exchange heat with the battery 4 to cool the battery 4. The bottom plate 43 includes a liquid inlet channel 432, a liquid outlet channel 433 and a liquid storage tank 431. The sealing plate 42 includes two The two connection ports 44 are connected to the liquid inlet channel 432 and the liquid outlet channel 433 respectively. The liquid outlet branch 211 and the liquid return branch 311 are each connected to a connection port 44. The liquid outlet branch 211 is connected to the liquid inlet channel 432. The coolant flows from the liquid outlet branch 211 to the liquid inlet channel 432 and flows into the liquid storage tank 431. The liquid return branch 311 is connected to the liquid outlet channel 433. Due to the operation of the liquid cooling system, the coolant circulates continuously in the liquid cooling system. The coolant in the liquid storage tank 431 will continue to flow out to the liquid return branch 311 through the liquid outlet channel 433, so that the temperature of the coolant in the liquid storage tank 431 can always be maintained at a low temperature, and the battery 4 is continuously cooled by heat exchange.

[0031] like Figure 5 、 Figure 6 As shown, more preferably, one end of the liquid inlet channel 432 connected to the liquid storage tank 431 is located in the middle position of the liquid storage tank 431, and the coolant can diffuse in a fan shape from the middle of the liquid storage tank 431 to the liquid storage tank 431 to fill the entire liquid storage tank 431. The subsequent continuous input of coolant can also diffuse from the middle position of the liquid storage tank 431 to the surrounding areas, so that the cooling effect of the battery 4 is better.

[0032] like Figure 5 、 Figure 6 As shown, more preferably, one end of the liquid outlet channel 433 connected to the liquid storage tank 431 is located near the edge of the liquid storage tank 431. The coolant input from the middle position of the liquid storage tank 431 will push the coolant with the previously increased temperature to both sides of the inside of the liquid storage tank 431. The end of the liquid outlet channel 433 connected to the liquid storage tank 431 is close to the edge, which makes it easier to discharge the coolant after heat exchange.

[0033] Example 2:

[0034] like Figure 7 、 Figure 8As shown, this embodiment discloses an energy storage container based on the first embodiment, including the energy storage container liquid cooling system, a plurality of mounting racks 5 and a box body 8 in the first embodiment, the energy storage container liquid cooling system and the plurality of mounting racks 5 are located in the box body 8, a door that can be opened and closed is installed on the long side of the box body 8, and the battery 4 can be installed into the mounting rack 5 from the long side of the box body 8, the plurality of mounting racks 5 are arranged in parallel, and the plurality of batteries 4 are placed between two adjacent mounting racks 5, and the mounting racks 5 are provided with longitudinally arranged support plates, the support plates of the two adjacent mounting racks 5 are opposite, and the upper end surfaces of the two support plates can support and place a battery 4, and the plurality of batteries 4 are placed correspondingly on the support plates, and the liquid outlet pipe 21 and the liquid return pipe 3 1 are all installed at the outer end of the mounting frame 5, the liquid outlet pipe 2 passes through the top of all the mounting frames 5, the liquid outlet branch pipe 21 is fixed to the outside of the mounting frame 5, and the liquid return branch pipe 31 is fixed to the outside of the mounting frame 5, that is, the liquid outlet branch pipe 21 and the liquid return branch pipe 31 are located on the side of the long side of the mounting frame 5 facing the box body 8, which is convenient for the installation of the liquid outlet branch pipe 21 and the liquid return branch pipe 31 and more convenient for the connection of the liquid outlet branch pipe 211 and the liquid return branch pipe 31 with the battery 4. The liquid return pipe 3 passes through the bottom of all the mounting frames 5, and the liquid outlet branch pipe 21 and the liquid return branch pipe 31 are respectively located on two adjacent mounting frames 5. The mounting frame 5 can provide a placement space for the battery 4 and can also be used to fix the liquid outlet branch pipe 21 and the liquid return branch pipe 31.

[0035] like Figure 8 As shown, a plurality of mounting racks 5 are arranged in two rows, and the number of mounting racks 5 in the two rows is different. The refrigerator 1 is installed in the row with the smaller number of mounting racks 5, as shown in FIG. Figure 8 The mounting racks 5 shown in the figure are divided into two rows, and the two rows of mounting racks 5 are respectively formed to accommodate six battery packs and four battery packs. There is residual space at both ends of the row accommodating four battery packs. The space at one end can be used to place the refrigerator 1 of the liquid cooling system, and the space at the other end can be used to place the electrical cabinet of the energy storage container. Compared with the battery packs grouped in 50-50 inside the previous energy storage container, the energy storage container in this embodiment can install the refrigerator 1 and the electrical cabinet without changing the capacity of the internal battery 4, making the internal structure arrangement more reasonable and compact.

[0036] like Figure 8 As shown, more preferably, this embodiment includes a partition 7, which separates the interior of the box body 8 into a space that can accommodate the refrigerator 1. The partition 7 can separate the part of the energy storage container where the battery 4 is installed from the part where the refrigerator 1 is installed, preventing the heat generated during the operation of the refrigerator 1 from affecting the temperature in the part where the battery 4 is installed. The part of the box body 8 where the refrigerator 1 is installed is provided with a mesh plate, which can ensure good ventilation of the space where the refrigerator 1 is installed, thereby preventing the temperature of the space where the refrigerator 1 is installed from being too high.

[0037] like Figure 7 、 Figure 8As shown, the dehumidifying air conditioner 6 is included and installed in the box 8. Since the battery 4 is liquid-cooled for cooling, when the temperature of the battery 4 is lower than the ambient temperature, water droplets will condense on the surface of the battery 4, which will cause the humidity inside the energy storage container to be too high. If the battery 4 and other electrical components are damp, the function of the energy storage container will be damaged. The dehumidifying air conditioner 6 can effectively dehumidify the interior of the energy storage container to ensure that the humidity inside the energy storage container is not too high.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling system for an energy storage container, characterized by: The invention comprises a refrigerator (1), a liquid outlet pipe (2), a liquid return pipe (3) and a plurality of batteries (4), wherein the plurality of batteries (4) are stacked to form a plurality of battery packs, the liquid outlet pipe (2) comprises a plurality of liquid outlet branch pipes (21), the liquid outlet branch pipes (21) comprise a plurality of liquid outlet branch pipes (211), the liquid return pipe (3) comprises a plurality of liquid return branch pipes (31), the liquid return branch pipe (31) comprises a plurality of liquid return branch pipes (311), each of the batteries (4) is connected to a liquid outlet branch pipe (211) and a liquid return branch pipe (311), the refrigerator (1) is connected to the liquid outlet pipe (2) and the liquid return pipe (3), and the refrigerator (1), the liquid outlet pipe (2), the battery (4) and the liquid return pipe (3) form a circulation pipeline; A liquid storage bin (431) is provided inside the battery (4), and the liquid outlet branch pipe (211) and the liquid return branch pipe (311) are both connected to the liquid storage bin (431); the battery (4) includes a refrigeration plate (41), the refrigeration plate (41) is located at the bottom of the battery (4), and the liquid storage bin (431) is located inside the refrigeration plate (41); The refrigeration plate (41) includes a sealing plate (42) and a bottom plate (43); the bottom plate (43) includes a liquid inlet channel (432), a liquid outlet channel (433) and a liquid storage tank (431); the sealing plate (42) includes two connecting ports (44); the two connecting ports (44) are connected to the liquid inlet channel (432) and the liquid outlet channel (433), respectively; the liquid outlet branch pipe (211) and the liquid return branch pipe (311) are each connected to one connecting port (44); one end of the liquid inlet channel (432) connected to the liquid storage tank (431) is located in the middle of the liquid storage tank (431); and one end of the liquid outlet channel (433) connected to the liquid storage tank (431) is located near the edge of the liquid storage tank (431).

2. The energy storage container liquid cooling system according to claim 1, characterized in that: The liquid outlet pipe (2) is located at the top of the battery pack, the liquid outlet branch pipe (21) is located below the liquid outlet pipe (2) and is vertically arranged, and a plurality of the liquid outlet branch pipes (211) are distributed along the length direction of the liquid outlet branch pipe (21); the liquid return pipe (3) is located at the bottom of the battery pack, the liquid return branch pipe (31) is located above the liquid return pipe (3) and is vertically arranged, and a plurality of the liquid return branch pipes (311) are distributed along the length direction of the liquid return branch pipe (31); and each group of batteries (4) corresponds to one liquid outlet branch pipe (21) and one liquid return branch pipe (31).

3. The energy storage container liquid cooling system according to claim 2, characterized in that: The liquid outlet branch pipe (211) and the liquid return branch pipe (311) connected to the same battery (4) are located at the same height.

4. An energy storage container, characterized in that: The energy storage container liquid cooling system comprises the energy storage container liquid cooling system according to any one of claims 1 to 3, a plurality of mounting frames (5) and a box body (8), wherein the energy storage container liquid cooling system and the plurality of mounting frames (5) are located in the box body (8), the plurality of mounting frames (5) are arranged in parallel, the plurality of batteries (4) are placed between two adjacent mounting frames (5), and the liquid outlet pipe (21) and the liquid return pipe (31) are both installed at the outer end of the mounting frame (5).

5. The energy storage container according to claim 4, characterized in that: The plurality of mounting racks (5) are arranged in two rows, the number of the mounting racks (5) in the two rows is different, and the refrigerator (1) is installed in the row with the smaller number of mounting racks (5).

6. The energy storage container according to claim 4, characterized in that: It comprises a partition (7), wherein the partition (7) separates the interior of the box (8) into a space capable of accommodating the refrigerator (1), and a mesh plate is provided on the portion of the box (8) where the refrigerator (1) is installed.

7. The energy storage container according to claim 4, characterized in that: It comprises a dehumidifying air conditioner (6), and the dehumidifying air conditioner (6) is installed in a box body (8).

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