An immersion liquid-cooled energy storage system facilitating cell replacement

Abstract

The present invention discloses an immersion-type liquid-cooled energy storage system that facilitates the replacement of battery cells. The system comprises vertically extending columns and several shells, wherein the battery cells are arranged in the shells, a rotating shaft is fixedly connected to one side of the shells, the columns are provided with a rotating groove, a first water channel and a second water channel are provided in the rotating shaft, a water outlet is provided on the upper inner wall of the shells, a water inlet is provided on the lower inner wall of the shells, an air channel is provided in the columns, and a through hole is provided on the lower side of the rotating shaft. The liquid-cooled energy storage system also includes a water reservoir and a cooling device, a water outlet pipe is connected to the bottom of the water reservoir, a water pump is provided on the water outlet pipe, a valve is provided between the water outlet pipe and the second water channel, and the first water channel is connected to a return pipe. The present invention proposes an immersion-type liquid-cooled energy storage system that facilitates the replacement of battery cells, which is convenient for replacing battery cells and does not waste coolant.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to an immersion-type liquid-cooled energy storage system that facilitates replacement of battery cells. Background Art

[0002] The energy storage system is installed in a container and moved to its destination by vehicle to supply power to electrical equipment. When the energy storage system is in operation, the internal batteries generate a lot of heat, which needs to be dissipated in a timely manner to prevent the battery temperature from becoming too high and causing danger. Existing energy storage systems use air cooling to dissipate heat, which has low heat dissipation efficiency. Liquid-cooled energy storage systems have high heat dissipation efficiency, but when the battery cells in the energy storage system need to be replaced, the coolant near the battery cells must first be drained from the energy storage system, and then the energy storage system must be opened to replace the battery cells. Therefore, replacing battery cells in existing energy storage systems is extremely troublesome and easily results in a large amount of coolant waste. Summary of the Invention

[0003] In order to solve the shortcomings of the prior art that battery cell replacement is troublesome and easily causes waste of coolant, the present invention proposes an immersion liquid-cooled energy storage system that is easy to replace battery cells. The battery cells are easy to replace and no coolant is wasted.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An immersion-type liquid-cooled energy storage system for facilitating replacement of battery cells, comprising a vertically extending column and a plurality of shells, wherein the shells are all arranged on one side of the column and are arranged in sequence along the axial direction of the column, a battery cell is arranged in the shell, a rotating shaft perpendicular to the column is fixedly connected to one side of the shell, the column is provided with a rotating groove, the rotating shaft passes through the rotating groove and is rotatably connected to the rotating groove, the rotating shaft is close to the upper side of the shell, a first water channel and a second water channel are provided in the rotating shaft, a water outlet is provided on the upper inner wall of the shell, a water inlet is provided on the lower inner wall of the shell, the water outlet is connected to the first water channel through a third water channel, the water inlet is connected to the second water channel through a fourth water channel, an air channel is provided in the column, The lower end of the air channel is connected to the upper side of the rotating groove, and the upper end of the air channel is connected to the atmosphere. The lower side of the rotating shaft is provided with a through hole for cooperating with the air channel when the rotating shaft rotates, and the through hole is connected to the second water channel. The liquid-cooled energy storage system also includes a water reservoir with coolant inside and a cooling device for cooling the coolant in the water reservoir. The bottom of the water reservoir is connected to a water outlet pipe, and the water outlet pipe is provided with a water pump. The water outlet pipe is connected to the second water channel, and a valve is provided between the water outlet pipe and the second water channel. The first water channel is connected to a return water pipe toward the water reservoir, and the mouth of the return water pipe is provided above the coolant in the water reservoir. The height of the lower side of each rotating shaft is higher than the height of the mouth of the corresponding return water pipe.

[0006] The columns support the housing, which holds the battery cells. The shaft connects the housing to the columns and rotates within the rotating groove around its axis. During operation, the battery cells generate heat, raising the temperature inside the housing. The water pump operates, pumping coolant from the reservoir through the outlet pipe, the second water channel, the fourth water channel, and the water inlet into the housing to cool the battery cells. The coolant, which has passed through the battery cells, returns to the reservoir through the outlet, the third water channel, the first water channel, and the return pipe. Arranging the housing in sequence along the axis of the columns can reduce the footprint of the liquid-cooled energy storage system.

[0007] When a battery cell in a housing needs to be replaced, the water pump continues to operate to ensure the other cells remain operational and cooled. The valve corresponding to the cell to be replaced is closed to prevent coolant from continuing to drain through the second water channel to the cell to be replaced. The corresponding housing is rotated 180 degrees. At this point, the upper end of the corresponding air channel is higher than the housing. The air channel connects to the second water channel through a via, effectively connecting the atmosphere and the second water channel. The rotating shaft is located near the underside of the housing, with the first channel, water outlet, and third water channel located near the underside. When the underside of the rotating shaft is higher than the opening of the return pipe, gravity forces the coolant in the housing back into the reservoir through the outlet, third water channel, first channel, and return pipe, while air enters the housing through the air channel, via, second water channel, fourth water channel, and water inlet. Once the coolant in the housing is drained, the housing is opened and the battery cell is replaced. After the battery cell is replaced, the housing is closed and rotated again to return to its original position. The valve is then opened to allow coolant to flow into the housing. When replacing the battery cell in this application, the coolant flows to the water reservoir for backup, which does not cause waste of coolant. At the same time, the coolant can be drained by rotating the shell and closing the valve, and the coolant can be input by rotating the shell and opening the valve, which greatly facilitates the replacement of the battery cell. At the same time, in the process of replacing some battery cells, it does not affect the operation and cooling of other battery cells, thereby reducing the impact of replacing the battery cells.

[0008] Furthermore, the shell includes a main body with an opening facing away from the column, a cover is provided on the side of the main body away from the column, a storage space for accommodating the battery cell is formed between the main body and the cover, and the rotating shaft is fixedly connected to the side of the main body away from the cover.

[0009] A side opening is adopted, that is, the opening of the main body is located on the side of the main body away from the column, so that when the cover is opened to replace the battery cell, the personnel have a larger operating space.

[0010] Furthermore, a support plate is provided in the accommodating space, the battery cell passes through the support plate, the lower side of the battery cell and the lower inner wall of the shell are gap-fitted, and the upper side of the battery cell and the upper inner wall of the shell are gap-fitted.

[0011] The support plate is used to limit the battery cell. The gap between the lower side of the battery cell and the lower inner wall of the shell is matched, so that the coolant output from the water inlet can smoothly enter the accommodation space and cool the battery cell, and the gap between the upper side of the battery cell and the upper inner wall of the shell is matched, so that the water outlet can smoothly output the coolant.

[0012] Furthermore, the cooling device includes a compressor and a condenser, and the condenser is connected to the compressor and is at least partially disposed in the water reservoir.

[0013] The compressor is used to cool the condenser, and the condenser is at least partially located in the coolant in the water reservoir and cools the coolant.

[0014] Furthermore, the third water channel is arranged inside the upper wall of the shell, and the fourth water channel is arranged inside the lower wall of the shell.

[0015] Through the above arrangement, the structural compactness of the present application is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an embodiment of the present application.

[0017] Figure 2 This is a schematic diagram of coolant being discharged from the housing after the housing rotates according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0019] See also Figures 1 to 2, an immersion liquid-cooled energy storage system that is easy to replace a battery cell 13, comprising a vertically extending column 11 and a plurality of shells 12, the shells 12 are all arranged on one side of the column 11 and are arranged in sequence along the axis direction of the column 11, a battery cell 13 is arranged in the shell 12, one side of the shell 12 is fixedly connected to a rotating shaft 121 perpendicular to the column 11, the column 11 is provided with a rotating groove 111, the rotating shaft 121 passes through the rotating groove 111 and is rotatably connected to the rotating groove 111 Then, the rotating shaft 121 is close to the upper side of the shell 12, and a first water channel 1211 and a second water channel 1212 are provided in the rotating shaft 121. A water outlet 122 is provided on the upper inner wall of the shell 12, and a water inlet 123 is provided on the lower inner wall of the shell 12. The water outlet 122 is connected to the first water channel 1211 through a third water channel 124, and the water inlet 123 is connected to the second water channel 1212 through a fourth water channel 125. An air channel 112 is provided in the column 11. The lower end of the air channel 112 is connected to the upper side of the rotating groove 111, and the upper end of the air channel 112 is connected to the atmosphere. The lower side of the rotating shaft 121 is provided with a through hole 1213 for cooperating with the air channel 112 when the rotating shaft 121 rotates. The through hole 1213 is connected to the second water channel 1212. The liquid-cooled energy storage system also includes a water reservoir 14 with a coolant inside and a cooling device 15 for cooling the coolant in the water reservoir 14. The bottom of the water reservoir 14 is connected to a water outlet pipe. 141, the outlet pipe 141 is provided with a water pump 1411, the outlet pipe 141 is connected to the second water channel 1212, and a valve 1214 is provided between the outlet pipe 141 and the second water channel 1212, the first water channel 1211 is connected to a return pipe 1215 toward the water reservoir 14, the mouth of the return pipe 1215 is arranged above the coolant in the water reservoir 14, and the height of the lower side of each rotating shaft 121 is higher than the height of the mouth of the corresponding return pipe 1215.

[0020] The column 11 is used to support the housing 12, which is used to accommodate the battery cells 13. The rotating shaft 121 is used to connect the housing 12 to the column 11. The rotating shaft 121 can rotate around the axis of the rotating shaft 121 within the rotating groove 111. When the battery cells 13 are in operation, they generate heat, and the temperature inside the housing 12 increases. The water pump 1411 operates and sends the coolant in the water reservoir 14 into the housing 12 through the outlet pipe 141, the second water channel 1212, the fourth water channel 125, and the water inlet 123 to cool the battery cells 13. The coolant passing through the battery cells 13 returns to the water reservoir 14 through the outlet 122, the third water channel 124, the first water channel 1211, and the return pipe 1215. Figure 1 The shells 12 are sequentially arranged along the axis direction of the columns 11 to reduce the floor space occupied by the liquid-cooled energy storage system.

[0021] When a battery cell 13 in a certain housing 12 needs to be replaced, the water pump 1411 continues to operate to ensure that the other battery cells 13 can function normally and be cooled. The valve 1214 corresponding to the battery cell 13 to be replaced is closed to prevent the coolant from continuing to flow to the battery cell 13 to be replaced through the second water channel 1212. The corresponding housing 12 is rotated 180 degrees. At this time, the upper end of the corresponding air channel 112 is higher than the housing 12, and the air channel 112 is connected to the second water channel 1212 through the through hole 1213, that is, the atmosphere is connected to the second water channel 1212. The rotating shaft 121 is close to the bottom side of the housing 12, that is, the first channel, the water outlet 122, and the third water channel 124 are close to the bottom side of the housing 12. When the lower side of the rotating shaft 121 is higher than the opening of the return pipe 1215, under the action of gravity, the coolant in the housing 12 returns to the water reservoir 14 through the water outlet 122, the third water channel 124, the first channel, and the return pipe 1215, while the air enters the housing 12 through the air channel 112, the through hole 1213, the second water channel 1212, the fourth water channel 125 and the water inlet 123. Figure 2 . When the coolant in the shell 12 is emptied, open the shell 12 and replace the battery cell 13. After the battery cell 13 is replaced, close the shell 12, rotate the shell 12 again to return to the initial state, and then open the valve 1214 to input the coolant into the shell 12. When the battery cell 13 is replaced in this application, the coolant flows to the water reservoir 14 for backup, and no waste of coolant is caused. At the same time, the coolant can be emptied by rotating the shell 12 and closing the valve 1214, and the coolant can be input by rotating the shell 12 and opening the valve 1214, which greatly facilitates the replacement of the battery cell 13. At the same time, in the process of replacing some battery cells 13, the operation and cooling of other battery cells 13 are not affected, thereby reducing the impact of replacing the battery cell 13.

[0022] The shell 12 includes a main body 126 with an opening facing away from the column 11. A cover plate 127 is provided on the side of the main body 126 away from the column 11. An accommodating space for accommodating the battery cell 13 is formed between the main body 126 and the cover plate 127. The rotating shaft 121 is fixedly connected to the side of the main body 126 away from the cover plate 127.

[0023] The lateral opening is adopted, that is, the opening of the main body 126 is located on the side of the main body 126 away from the column 11, so that when the cover 127 is opened to replace the battery cell 13, the personnel have a larger operating space.

[0024] A support plate 128 is provided in the accommodating space, and the battery cell 13 passes through the support plate 128 . The lower side of the battery cell 13 is gap-fitted with the lower inner wall of the shell 12 , and the upper side of the battery cell 13 is gap-fitted with the upper inner wall of the shell 12 .

[0025] The support plate 128 is used to limit the battery cell 13. The gap between the lower side of the battery cell 13 and the lower inner wall of the shell 12 is matched, so that the coolant output from the water inlet 123 can smoothly enter the accommodating space and cool the battery cell 13, and the gap between the upper side of the battery cell 13 and the upper inner wall of the shell 12 is matched, so that the water outlet 122 can smoothly output the coolant.

[0026] The cooling device 15 includes a compressor 151 and a condenser 152 . The condenser 152 is connected to the compressor 151 and is at least partially disposed in the water reservoir 14 .

[0027] The compressor 151 is used to cool the condenser 152. The condenser 152 is at least partially located in the coolant in the water reservoir 14 and cools the coolant.

[0028] The third water channel 124 is provided inside the upper wall of the housing 12 , and the fourth water channel 125 is provided inside the lower wall of the housing 12 .

[0029] Through the above arrangement, the structural compactness of the present application is increased.

[0030] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An immersion liquid-cooled energy storage system that facilitates replacement of battery cells, characterized in that: The utility model comprises a column extending vertically and several shells, the shells are all arranged on one side of the column and are arranged in sequence along the axial direction of the column, a battery cell is arranged in the shell, a rotating shaft perpendicular to the column is fixedly connected to one side of the shell, the column is provided with a rotating groove, the rotating shaft passes through the rotating groove and is rotatably connected to the rotating groove, the rotating shaft is close to the upper side of the shell, a first water channel and a second water channel are arranged in the rotating shaft, the upper inner wall of the shell is provided with a water outlet, the lower inner wall of the shell is provided with a water inlet, the water outlet is connected to the first water channel through a third water channel, the water inlet is connected to the second water channel through a fourth water channel, an air channel is provided in the column, and the lower end of the air channel is connected to the The upper side of the rotating groove is connected, the upper end of the air channel is connected to the atmosphere, and the lower side of the rotating shaft is provided with a through hole for cooperating with the air channel when the rotating shaft rotates, and the through hole is connected to the second water channel. The liquid-cooled energy storage system also includes a water reservoir with coolant inside and a cooling device for cooling the coolant in the water reservoir. The bottom of the water reservoir is connected to a water outlet pipe, and the water outlet pipe is provided with a water pump. The water outlet pipe is connected to the second water channel, and a valve is provided between the water outlet pipe and the second water channel. The first water channel is connected to a return pipe toward the water reservoir, and the mouth of the return pipe is provided above the coolant in the water reservoir. The height of the lower side of each rotating shaft is higher than the height of the mouth of the corresponding return pipe.

2. The immersion-type liquid-cooled energy storage system for easy replacement of battery cells according to claim 1, characterized in that: The shell includes a main body with an opening facing away from the column, a cover plate is provided on the side of the main body away from the column, an accommodating space for accommodating the battery cell is formed between the main body and the cover plate, and the rotating shaft is fixedly connected to the side of the main body away from the cover plate.

3. The immersion-type liquid-cooled energy storage system for easy replacement of battery cells according to claim 2, characterized in that: A support plate is provided in the accommodating space, the battery core passes through the support plate, the lower side of the battery core is gap-fitted with the lower inner wall of the shell, and the upper side of the battery core is gap-fitted with the upper inner wall of the shell.

4. The immersion liquid-cooled energy storage system for easy replacement of battery cells according to claim 1, characterized in that: The cooling device includes a compressor and a condenser, wherein the condenser is connected to the compressor and is at least partially disposed in the water reservoir.

5. The immersion liquid-cooled energy storage system for easy replacement of battery cells according to any one of claims 1 to 4, characterized in that: The third water channel is provided inside the upper wall of the housing, and the fourth water channel is provided inside the lower wall of the housing.

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