Uniform temperature liquid-cooled battery energy storage cabin

Abstract

The application discloses a kind of even temperature liquid-cooled battery energy storage cabin, belong to battery energy storage cabin technical field, the application includes battery cabin body and the support seat at the bottom of battery cabin body, the side of the battery cabin body is provided with protective cabin door, and support seat is fixed with support bottom plate above, the support bottom plate is connected with partition frame, one end of the battery cabin body is fixed with refrigeration module, and water pump and primary refrigeration water tank are arranged in refrigeration module, and the upper end of water inlet pipe is installed with first drainage pipe, the shunt pipe of the side of first drainage pipe is connected with battery internal cooling pipeline water inlet.The even temperature liquid-cooled battery energy storage cabin, through the setting of cooling pipeline, the battery pack in the cabin body can be liquid-cooled cooling, while setting secondary cooling component in the latter half of cooling pipeline, using the secondary cooling of the latter half of cooling pipeline, prevent the temperature difference of cooling liquid and cause the temperature difference of battery in different regions too large.

Description

Technical Field

[0001] This invention relates to the field of battery energy storage technology, specifically to a uniform temperature liquid-cooled battery energy storage chamber. Background Technology

[0002] Containerized energy storage systems are power devices that use lithium batteries and other materials to convert electrical energy into chemical energy for storage and release it as needed. They are mainly used in new energy and distributed generation systems. However, in order to facilitate the cooling of the batteries in the electrochemical energy storage battery compartment, the batteries are usually water-cooled to ensure that the batteries operate at a suitable temperature.

[0003] For example, Chinese patent publication number CN115275424A, patent name: Box-type energy storage battery device, publication date: 2022-11-01, includes an outer casing, a cooling device, cooling pipes, electrical and control components, cables, and multiple battery clusters; the outer casing includes a frame structure, and the frame structure has a battery compartment and a machine compartment inside; the battery compartment has a first area and a second area arranged along a first direction, and the first area has multiple first racks arranged along a second direction; the second area has multiple second racks arranged along a second direction; the machine compartment has a third area, a fourth area, and a fifth area arranged sequentially along the first direction; the third and fifth areas are used to accommodate the cooling device; the fourth area is used to accommodate the electrical and control components.

[0004] The existing technology has the following technical problems: When the existing box-type energy storage compartment is in use, it uses internal cooling pipes to liquid cool the battery. However, as the water flows through the compartments, the temperature of the water in the front part gradually increases after exchanging heat with the battery. When the water flows into the second half, the temperature rises, which makes the cooling effect of the battery in the second half worse than that in the front half, resulting in a large temperature difference between the batteries in different areas.

[0005] Therefore, we propose a uniform temperature liquid-cooled battery energy storage chamber to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a uniform temperature liquid-cooled battery energy storage chamber to solve the problem mentioned in the background art. In existing box-type energy storage chambers on the market, the batteries are liquid-cooled through internal cooling pipes. However, as the water flows through stages, the temperature of the water in the first part gradually increases after exchanging heat with the batteries. When the water flows into the second half, the temperature rises, resulting in a poorer cooling effect for the batteries in the second half compared to the first half, thus causing excessive temperature differences between batteries in different areas.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a uniform temperature liquid-cooled battery energy storage chamber, comprising a battery chamber body and a support base located at the bottom of the battery chamber body. A protective door is provided on the side of the battery chamber body, and a support base plate is fixed above the support base. A partition frame is connected to the support base plate. A cooling module is fixed at one end of the battery chamber body, and a water pump and a primary cooling water tank are provided inside the cooling module. The water pump is connected to an inlet pipe, and a first drain pipe is installed at the upper end of the inlet pipe. A branch pipe on the side of the first drain pipe is connected to the inlet of the internal cooling pipeline of the battery, and the outlet of the internal cooling pipeline of the battery is connected to a branch pipe on a second drain pipe. The second drain pipe is installed on an outlet pipe, and the outlet pipe is connected to the primary cooling water tank to form a circulating liquid cooling system. A heat-absorbing plate is provided at the end of the inlet pipe, and a fixed heat-conducting column fixed at the lower end of the heat-absorbing plate is inserted into the secondary cooling water tank.

[0008] Preferably, an ultrasonic flow sensor is installed on the first drainage tube, and a flow regulating valve is installed on the branch tube on the side of the first drainage tube.

[0009] By adopting the above technical solution, the flow rate of coolant in each battery pack can be monitored by the ultrasonic flow sensor on the first drainage pipe, and the flow rate of the battery pack can be adjusted by using the flow regulating valve.

[0010] Preferably, the heat-absorbing plate is in close contact with the outer wall of the water inlet pipe, and four fixed heat-conducting columns are provided at the bottom corner of the heat-absorbing plate, and each fixed heat-conducting column is inserted into the secondary cooling water tank.

[0011] By adopting the above technical solution, the heat absorption plate can absorb the heat at the end of the water inlet pipe and transfer it to the secondary cooling water tank through the fixed heat conduction column.

[0012] Preferably, a connecting column is installed between adjacent fixed heat-conducting columns on one side of the lower end of the heat-absorbing plate, and a movable rack is inserted inside the connecting column. The side of the movable rack is meshed with a power gear, and the power gear is controlled to rotate by a motor.

[0013] By adopting the above technical solution, the moving rack on the connecting column can be moved synchronously by the movement of the power rack.

[0014] Preferably, the heat-absorbing plate, the fixed heat-conducting column, and the connecting column are all hollow structures, and the cavities inside the three are interconnected. The end of the moving rack that extends into the connecting column is circumferentially wrapped with a sealing ring, and the moving rack can slide inside the connecting column.

[0015] By adopting the above technical solution, the sealing performance of the moving rack can be improved when it moves inside the connecting column by using the sealing ring at the end of the moving rack.

[0016] Preferably, the heat-absorbing plate has a first air hole on the side facing the end of the water inlet pipe, and a second air hole is provided on the lower side of the heat-absorbing plate. The second air hole is located in the accommodating cavity formed by the metal partition and the secondary cooling water tank. The metal partition is connected to the secondary cooling water tank by a spring, and the edge of the metal partition is also wrapped with a sealing ring.

[0017] By adopting the above technical solution, the cold air inside the secondary cooling water tank can cool the metal partition through the setting of the metal partition, and after the metal partition is cooled, the airflow inside the accommodating cavity will also be cooled.

[0018] Preferably, the metal partition can slide on the fixed heat-conducting column and the secondary cooling water tank, and the heat-absorbing plate has multiple first air holes on the side facing the end of the water inlet pipe.

[0019] By adopting the above technical solution, when the moving rack moves inside the connecting column, the heat absorption plate can absorb the hot air around the end of the water inlet pipe through the first air hole, and absorb the cold air in the accommodating cavity through the second air hole, thereby neutralizing and cooling.

[0020] Preferably, a transverse plate is fixed to the lower side of the metal partition, and the locking block at the end of the transverse plate is inserted into the transmission groove on the surface of the moving heat-conducting column. The moving heat-conducting column is installed at the lower end of the fixed heat-conducting column, and a baffle is installed on the moving heat-conducting column.

[0021] By adopting the above technical solution, the moving heat-conducting column can be moved on the fixed heat-conducting column by the movement of the locking block in the transmission groove on the surface of the moving heat-conducting column.

[0022] Preferably, the moving heat-conducting column is capable of rotating at the lower end of the fixed heat-conducting column, and the transmission groove on the surface of the moving heat-conducting column is configured as a spiral structure.

[0023] By adopting the above technical solution, the rotation of the dynamic heat-conducting column can agitate the water source in the secondary cooling water tank using the turbulence rack, thereby enabling the water source to fully exchange heat and improve the heat exchange and cooling effect.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the uniform temperature liquid-cooled battery energy storage chamber can liquid-cool the battery pack inside the chamber by setting up cooling pipes, and at the same time, a secondary cooling component is set in the latter half of the cooling pipes to prevent excessive temperature difference in different areas of the battery due to the temperature difference of the coolant.

[0025] 1. An inlet pipe is provided, and a pump delivers water into the inlet pipe. The water flows through the first diversion pipe and the branch pipe into the water-cooling pipe inside the battery pack. The water flowing into the water-cooling pipe can be used to liquid cool the battery pack. After heat exchange, the water flows through the second diversion pipe and the branch pipe on the second diversion pipe into the outlet pipe, and finally flows back to the primary cooling water tank through the outlet pipe, forming a circulating water cooling system.

[0026] 2. A heat absorption plate is provided. The heat absorption plate can absorb the heat at the end of the water inlet pipe. After absorbing the heat, the heat can be introduced into the water source of the secondary cooling water tank through the fixed heat conduction column and the moving heat conduction column, thereby cooling the end of the water inlet pipe and making the cooling effect of the battery in the latter half equal to that of the battery in the first half.

[0027] 3. A metal partition is provided. The metal partition allows the cold air in the secondary cooling water tank to cool the airflow in the containment cavity. The moving rack can be moved back and forth inside the connecting column by the power gear. The reciprocating movement of the connecting column can absorb the hot air at the end of the water inlet pipe through the first air hole on the heat absorption plate and absorb the cold air in the containment cavity through the second air hole on the fixed heat conduction column. The heat absorption plate and the fixed heat conduction column are interconnected, thereby achieving the neutralization and cooling of the airflow.

[0028] 4. Equipped with a baffle, after the second air hole draws in the airflow inside the accommodating cavity, the metal partition can move upward. After the metal partition moves, it can drive the bottom horizontal plate to move synchronously. The end block of the horizontal plate moves in the spiral transmission groove, which allows the moving heat conduction column to drive the baffle to rotate at the bottom of the fixed heat conduction column. The rotation of the baffle can agitate the water in the secondary cooling water tank, improve the water flow in the secondary cooling water tank, and increase the overall heat exchange efficiency. In addition, the surface of the moving heat conduction column is provided with a spiral transmission groove, which can also increase the contact area between the moving heat conduction column and the water. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the support base and cooling module structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the inlet and outlet pipes of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the first drainage tube and the diversion tube of the present invention;

[0033] Figure 5This is a schematic diagram of the supporting base plate and heat absorption plate structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the fixed heat-conducting column and the two-stage cooling water tank structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the connecting column and movable rack structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the metal partition and transverse plate structure of the present invention;

[0037] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0038] In the diagram: 1. Battery compartment body; 2. Support base; 3. Protective door; 4. Refrigeration module; 5. Divider frame; 6. Water inlet pipe; 7. First drain pipe; 8. Diverter pipe; 9. Second drain pipe; 10. Water outlet pipe; 11. Support base plate; 12. Heat absorber plate; 13. Fixed heat conduction column; 14. Secondary refrigeration water tank; 15. Connecting column; 16. Moving rack; 18. First vent; 19. Second vent; 20. Metal partition; 21. Receptacle; 22. Horizontal plate; 23. Moving heat conduction column; 24. Transmission groove; 25. Baffle frame. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figures 1-9Existing box-type energy storage compartments use internal cooling pipes to liquid cool the batteries during use. However, as the water flows through stages, the temperature of the water in the first part gradually increases after heat exchange with the batteries. When the water flows into the second half, the temperature rises, resulting in a less effective cooling effect for the batteries in the second half compared to the first half. This leads to excessive temperature differences between batteries in different areas. To solve this technical problem, this embodiment discloses the following technical content: a uniform temperature liquid-cooled battery energy storage compartment, including a battery compartment body 1 and a support base 2 located at the bottom of the battery compartment body 1. A protective door 3 is provided on the side of the battery compartment body 1, and a support base plate 11 is fixed above the support base 2. A partition frame 5 is connected to the support base plate 11. A cooling module 4 is fixed to one end of the battery compartment body 1, and the cooling module 4 is equipped with a water pump and a... The first-stage cooling water tank has a water pump connected to the inlet pipe 6, and a first drain pipe 7 is installed at the upper end of the inlet pipe 6. A branch pipe 8 on the side of the first drain pipe 7 is connected to the inlet of the internal cooling pipeline of the battery, and the outlet of the internal cooling pipeline of the battery is connected to the branch pipe 8 on the second drain pipe 9. The second drain pipe 9 is installed on the outlet pipe 10, and the outlet pipe 10 is connected to the first-stage cooling water tank to form a circulating liquid cooling system. A heat absorption plate 12 is provided at the end of the inlet pipe 6, and a fixed heat conduction column 13 fixed at the lower end of the heat absorption plate 12 is inserted into the second-stage cooling water tank 14. An ultrasonic flow sensor is installed on the first drain pipe 7, and a flow regulating valve is installed on the branch pipe 8 on the side of the first drain pipe 7. The heat absorption plate 12 is in close contact with the outer wall of the inlet pipe 6, and four fixed heat conduction columns 13 are provided at the bottom corner of the heat absorption plate 12, and each fixed heat conduction column 13 is inserted into the second-stage cooling water tank 14.

[0041] When the battery pack inside the battery compartment 1 is working, the water pump in the cooling module 4 delivers water to the primary cooling water tank. After the water enters the inlet pipe 6, it flows through the first drain pipe 7 and the branch pipe 8 above it into the water cooling pipeline of the battery pack. After heat exchange, the water flows through the branch pipe 8 on the second drain pipe 9 into the outlet pipe 10 and then back into the primary cooling water tank, thus forming a circulating water cooling system to effectively liquid cool the battery pack. At the same time, a heat absorption plate 12 is installed on the outer side of the end of the inlet pipe 6. When the temperature of the water in the inlet pipe 6 rises, the temperature at the end of the inlet pipe 6 can be absorbed by the heat absorption plate 12. The heat absorbed by the heat absorption plate 12 can be transferred to the secondary cooling water tank 14 through the fixed heat conduction column 13. The water in the secondary cooling water tank 14 is cooled by heat exchange, so that the temperature of the first half and the second half of the entire water pipeline can be equal.

[0042] Example 2: The technical content disclosed in this example is a further improvement based on Example 1 described above. The following technical content is disclosed in this example: Figures 5-9As shown, a connecting column 15 is installed between adjacent fixed heat-conducting columns 13 on one side of the lower end of the heat-absorbing plate 12. A movable rack 16 is inserted inside the connecting column 15, and a power gear is meshed on the side of the movable rack 16. The power gear is controlled to rotate by a motor. The heat-absorbing plate 12, the fixed heat-conducting column 13, and the connecting column 15 are all hollow structures, and their internal cavities are interconnected. A sealing ring is wrapped around the end of the movable rack 16 that extends into the connecting column 15, and the movable rack 16 can slide inside the connecting column 15. A first vent 18 is opened on the side of the heat-absorbing plate 12 facing the end of the water inlet pipe 6, and a second vent 19 is opened on the lower side of the heat-absorbing plate 12. The second vent 19 is located between the metal partition 20 and the secondary system. Inside the cavity 21 formed by the cold water tank 14, the metal partition 20 is connected to the secondary cooling water tank 14 by a spring. The edge of the metal partition 20 is also wrapped with a sealing ring. The metal partition 20 can slide on the fixed heat-conducting column 13 and the secondary cooling water tank 14. The heat-absorbing plate 12 has multiple first air holes 18 on the side facing the end of the water inlet pipe 6. A transverse plate 22 is fixed to the lower side of the metal partition 20. The locking block at the end of the transverse plate 22 is inserted into the transmission groove 24 on the surface of the moving heat-conducting column 23. The moving heat-conducting column 23 is installed at the lower end of the fixed heat-conducting column 13. A baffle 25 is installed on the moving heat-conducting column 23. The moving heat-conducting column 23 can rotate at the lower end of the fixed heat-conducting column 13. The transmission groove 24 on the surface of the moving heat-conducting column 23 is set as a spiral structure.

[0043] The motor controls the reciprocating rotation of the power gear, which enables the moving rack 16 to move reciprocally inside the connecting column 15. When the moving rack 16 moves towards the center of the secondary cooling water tank 14, the heat absorber plate 12, the fixed heat conduction column 13, and the connecting column 15 are interconnected. At this time, after the moving rack 16 moves, the heat absorber plate 12 can absorb the airflow around the end of the water inlet pipe 6 through the first air hole 18, while the fixed heat conduction column 13 can absorb the airflow inside the accommodating cavity 21 through the second air hole 19 on the side. Since the metal partition 20 is located inside the secondary cooling water tank 14, the cold air from the water source at the bottom of the metal partition 20 can be transferred to the accommodating cavity 21 through the metal partition 20, thereby cooling the airflow in the accommodating cavity 21. Thus, the higher temperature airflow in the heat absorber plate 12 can be neutralized and cooled by the lower temperature airflow in the fixed heat conduction column 13. When the moving rack 16 moves towards the center of the secondary cooling water tank 14, the heat absorber plate 12, the fixed heat conduction column 13, and the connecting column 15 are interconnected. After the cold water tank 14 moves outward, the neutralized and cooled airflow will be ejected outward through the first air hole 18 and the second air hole 19 on the heat absorption plate 12 and the fixed heat conduction column 13, respectively, thereby cooling the air around the end of the water inlet pipe 6. When the airflow in the accommodating cavity 21 is drawn by the second air hole 19, the metal partition 20 will move upward. After the metal partition 20 moves, it can drive the transverse plate 22 to move synchronously. After the transverse plate 22 moves, it can make the block move in the spiral transmission groove 24, thereby making the moving heat conduction column 23 rotate on the fixed heat conduction column 13. The rotation of the moving heat conduction column 23 drives the baffle 25 to rotate synchronously, thereby improving the fluidity of the water source in the secondary cooling water tank 14 and increasing the overall heat exchange and cooling efficiency. At the same time, the spiral transmission groove 24 opened on the moving heat conduction column 23 can increase the contact area with the water source in the secondary cooling water tank 14, indirectly improving the overall heat exchange efficiency.

[0044] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A uniform temperature liquid-cooled battery energy storage compartment, comprising a battery compartment body (1) and a support base (2) located at the bottom of the battery compartment body (1), wherein a protective door (3) is provided on the side of the battery compartment body (1), and a support base plate (11) is fixed above the support base plate (2), and a partition frame (5) is connected to the support base plate (11), characterized in that: A cooling module (4) is fixed at one end of the battery compartment body (1), and a water pump and a primary cooling water tank are installed inside the cooling module (4). The water pump is connected to the inlet pipe (6), and a first drain pipe (7) is installed at the upper end of the inlet pipe (6). The branch pipe (8) on the side of the first drain pipe (7) is connected to the inlet of the internal cooling pipeline of the battery, and the outlet of the internal cooling pipeline of the battery is connected to the branch pipe (8) on the second drain pipe (9). The second drain pipe (9) is installed on the outlet pipe (10), and the outlet pipe (10) is connected to the primary cooling water tank to form a circulating liquid cooling system. A heat absorption plate (12) is provided at the end of the inlet pipe (6), and a fixed heat conduction column (13) fixed at the lower end of the heat absorption plate (12) is inserted into the secondary cooling water tank (14). The heat absorption plate (12) is in contact with the outer wall of the water inlet pipe (6), and four fixed heat conduction columns (13) are provided at the bottom corner of the heat absorption plate (12), and each fixed heat conduction column (13) is inserted into the secondary cooling water tank (14). A connecting column (15) is installed between adjacent fixed heat-conducting columns (13) on one side of the lower end of the heat-absorbing plate (12), and a movable rack (16) is inserted inside the connecting column (15). A power gear is meshed on the side of the movable rack (16), and the power gear is controlled to rotate by a motor. The heat-absorbing plate (12), the fixed heat-conducting column (13) and the connecting column (15) are all hollow structures. The cavities inside the three are interconnected. The end of the moving rack (16) that extends into the connecting column (15) is circumferentially wrapped with a sealing ring. The moving rack (16) can slide inside the connecting column (15). The heat-absorbing plate (12) has a first air hole (18) on one side facing the end of the water inlet pipe (6), and a second air hole (19) is provided on the lower side of the heat-absorbing plate (12). The second air hole (19) is located in the cavity (21) formed by the metal partition (20) and the secondary cooling water tank (14). The metal partition (20) is connected to the secondary cooling water tank (14) by a spring, and the edge of the metal partition (20) is also wrapped with a sealing ring. The metal partition (20) can slide on the fixed heat-conducting column (13) and the secondary cooling water tank (14), and the heat-absorbing plate (12) has multiple first air holes (18) on the side facing the end of the water inlet pipe (6).

2. The isothermal liquid-cooled battery energy storage chamber according to claim 1, characterized in that: An ultrasonic flow sensor is installed on the first drainage tube (7), and a flow regulating valve is installed on the branch tube (8) on the side of the first drainage tube (7).

3. The isothermal liquid-cooled battery energy storage chamber according to claim 1, characterized in that: The lower side of the metal partition (20) is fixed with a transverse plate (22), and the end of the transverse plate (22) is inserted into the transmission groove (24) on the surface of the moving heat-conducting column (23). The moving heat-conducting column (23) is installed at the lower end of the fixed heat-conducting column (13), and a baffle (25) is installed on the moving heat-conducting column (23).

4. The isothermal liquid-cooled battery energy storage chamber according to claim 3, characterized in that: The moving heat-conducting column (23) can rotate at the lower end of the fixed heat-conducting column (13), and the transmission groove (24) on the surface of the moving heat-conducting column (23) is set as a spiral structure.

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