A combined system of thermal power generation and energy storage container

Abstract

The present application relates to the technical fields of energy storage container, in particular to a combined system of thermal power generation and energy storage container, which comprises a thermal power generation device, a cooling water main tower and an energy storage container, a battery fixing frame is installed in the energy storage container, a cooling and heating auxiliary device is installed on the battery fixing frame, the cooling and heating auxiliary device comprises a switching mechanism, a heating and heat preservation partition plate and a cooling auxiliary plate, when the battery needs to be heated and preserved, the switching mechanism switches the heating and heat preservation partition plate to the side of the corresponding heat conduction plate, when the battery needs to be cooled, the switching mechanism switches the cooling auxiliary plate to the side of the corresponding heat conduction plate; the cooling water in the cooling tower matched with the thermal power generation device is used to cool and heat the battery, and the energy storage container does not need to be equipped with separate heat dissipation and heating matching equipment, which reduces the use cost, and according to different needs, the switching mechanism can be switched to the heat preservation or heat dissipation state to improve the heating and cooling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage containers, in particular to a combined system of thermal power generation and energy storage containers. BACKGROUND

[0002] Thermal power generation is a power generation method that uses the heat energy generated by combustible materials during combustion to convert into electrical energy through a power generation device. Since the operation of the generator set needs to be adjusted according to the frequency of the power grid, energy storage devices are needed to store excess electricity to assist the generator set in frequency modulation, thereby improving the service life of the generator set. Among them, the application of energy storage containers is the most widely used. Since the energy storage battery will generate heat during charging and discharging, it is necessary to cool the battery to prevent overheating. However, when the temperature is low, the viscosity of the electrolyte of the battery will increase, affecting the performance of the battery, and the battery needs to be heated. In the prior art, separate cooling and heating devices are installed for each energy storage container to cool and heat the battery. Not only does this require additional equipment costs, but it also requires a large amount of electrical energy to operate these devices, which is neither economical nor environmentally friendly. SUMMARY

[0003] The technical problem to be solved by the present application is that the prior art energy storage container needs to install separate cooling and heating devices to cool and heat the battery, which not only requires additional equipment costs, but also requires a large amount of electrical energy to operate these devices, which is neither economical nor environmentally friendly. To solve the above technical problems, the present application adopts the following technical scheme: a combined system of thermal power generation and energy storage containers, comprising a thermal power generation device, a cooling water main tower and an energy storage container, wherein the thermal power generation device and the cooling water main tower are connected by a cooling water pipe and a first return pipe, and a first water pump is arranged between the cooling water pipe and the cooling water main tower.

[0004] To solve the above technical problems, the present application adopts the following technical scheme: a combined system of thermal power generation and energy storage containers, comprising a thermal power generation device, a cooling water main tower and an energy storage container, wherein the thermal power generation device and the cooling water main tower are connected by a cooling water pipe and a first return pipe, and a first water pump is arranged between the cooling water pipe and the cooling water main tower.

[0005] The energy storage container and the cooling water main tower are connected by a water supply pipe group and a return pipe group.

[0006] The inside of the energy storage container is provided with a plurality of battery fixing frames, and a plurality of battery insertion slots distributed in an up-down manner are arranged on the battery fixing frame. The top and bottom of each battery insertion slot is provided with a heat conduction plate, the inside of the heat conduction plate is a cavity and is provided with a coiled copper pipe, the front end of the copper pipe penetrates out of the heat conduction plate and is connected with the water supply pipe group, the rear end of the copper pipe penetrates out of the heat conduction plate and is connected with the return water pipe group, and a cooling and heating auxiliary device is arranged on the battery fixing frame.

[0007] The cooling heating auxiliary device comprises a switching mechanism, a plurality of alternately distributed heating insulation partitions and cooling auxiliary plates, the number of the heating insulation partitions and the cooling auxiliary plates corresponds to the number of the heat conduction plates, when the battery needs to be heated and insulated, the switching mechanism switches the heating insulation partition to be attached to the side of the corresponding heat conduction plate, and when the battery needs to be cooled, the switching mechanism switches the cooling auxiliary plate to be attached to the side of the corresponding heat conduction plate.

[0008] When the device is used, the cooling water (about 30 DEG C) in the cooling water main tower is pumped into the cooling water pipe by the first water pump to cool the thermal power generation equipment, and the backflow water (about 45 DEG C) after heat exchange is backflowed into the cooling water main tower through the first backflow pipe to be cooled.

[0009] When the battery in the energy storage container needs to be cooled, the cooling water (about 30 DEG C) in the cooling water main tower flows into each copper pipe through the water feeding pipe group, the heat of the battery is absorbed by the heat conduction plate and exchanged into the copper pipe, the cooling water takes away the heat when flowing through the copper pipe, the heat dissipation of the battery is realized, and the cooling auxiliary plate is attached to the side of the heat conduction plate by the switching mechanism to further dissipate heat and cool.

[0010] When the battery needs to be heated, the backflow water (about 45 DEG C) from the thermal power generation equipment in the cooling water main tower flows into each copper pipe through the water feeding pipe group, the heat conduction plate is heated by using the backflow water with higher temperature, so that the battery is heated, and the heating insulation partition is attached to the side of the heat conduction plate by the switching mechanism to be insulated.

[0011] The above technical scheme utilizes the cooling water in the cooling tower matched with the thermal power generation equipment to cool and heat the battery, the heat energy in the cooling water is utilized, a separate heat dissipation and heating matched equipment does not need to be provided for the energy storage container, the use cost is reduced, and the switching mechanism can be switched to the insulation or heat dissipation state according to different requirements, so that the heating and cooling effect is improved.

[0012] Further, the switching mechanism comprises a sliding rail fixedly installed at the top of the battery fixing frame, a bidirectional screw rod is installed in the inner cavity of the sliding rail, two sliding blocks are threadedly connected to the bidirectional screw rod, a motor is installed at one end of the sliding rail, the output shaft of the motor is in transmission connection with the bidirectional screw rod, an installation frame is installed at the bottom of each sliding block, the two installation frames are located at the front end and the rear end of the battery fixing frame, two symmetrically arranged racks are slidably installed on each installation frame, each rack is in meshing connection with a gear, the gear is connected with the output shaft of the driving motor, and the heating insulation partition and the cooling auxiliary plate are installed between the two racks.

[0013] When the battery is cooled, the motor is controlled to drive the bidirectional screw rod to rotate, the two mounting frames are driven away from the battery fixing frame by the screw transmission between the bidirectional screw rod and the sliding block, the gear is driven to rotate by the driving motor at this time, the rack is driven to rise and fall by the transmission of the gear and the rack, the cooling auxiliary plate connected with the rack is aligned with the heat conduction plate, the sliding block is reset by the motor, and the front and rear sides of the cooling auxiliary plate and the heat conduction plate are in contact to absorb part of the heat to cool them.

[0014] When the battery is heated, the motor is controlled to drive the bidirectional screw rod to rotate, the two mounting frames are driven away from the battery fixing frame by the screw transmission between the bidirectional screw rod and the sliding block, the gear is driven to rotate by the driving motor at this time, the rack is driven to rise and fall by the transmission of the gear and the rack, the heating insulation partition plate is aligned with the heat conduction plate, the sliding block is reset by the motor, and the front and rear ends of the heating insulation partition plate and the heat conduction plate are in contact to heat them.

[0015] Further, the heating insulation partition plate is embedded with a heat preservation foam in the inner cavity of the side close to the battery fixing frame, the heat preservation foam is used to cover and heat the exposed parts of the front and rear ends of the heat conduction plate, and the heating efficiency of the heat conduction plate on the battery is ensured.

[0016] Further, the cooling auxiliary plate is integrally formed with a heat dissipation fin on the side away from the battery fixing frame, the heat dissipation fin is used to increase the contact area of the cooling auxiliary plate with air, so as to improve the heat exchange effect between the cooling auxiliary plate and the air, and the efficiency and effect of the heat conduction plate on the battery cooling are improved.

[0017] Further, the inner top wall of the energy storage container is provided with a firework sensor, and the inner bottom wall of the energy storage container is provided with a water level sensor. The firework sensor is used to monitor whether the energy storage container is on fire in real time, and the water level sensor is used to sense whether there is water accumulation at the bottom of the energy storage container, so as to timely find abnormal conditions.

[0018] Further, the energy storage container and the cooling water main tower are provided with a cooling water sub-tower, the capacity of the cooling water sub-tower is smaller than that of the cooling water main tower, a first connecting pipe is connected between the cooling water main tower and the cooling water sub-tower, and an electric control valve is arranged on the first connecting pipe. The electric control valve is controlled to be opened, so that the water in the cooling water main tower flows into the cooling water sub-tower. Since the capacity of the cooling water sub-tower is relatively small, the cooling can be faster, and the cooling water in the cooling water sub-tower is cooled and then introduced into the energy storage container.

[0019] Further, the water delivery pipe group comprises a second water pump connected with the cooling water distribution tower, the second water pump is connected with a second connecting pipe, the second connecting pipe is connected with a first shunt pipe through a joint, the first shunt pipe is connected with a third connecting pipe, the third connecting pipe penetrates into the inside of the energy storage container and is connected with a plurality of second shunt pipes, and the second shunt pipes are connected with the copper pipes. The cooling water in the cooling water distribution tower is input into the second connecting pipe through the second water pump, flows into the third connecting pipe connected with each energy storage container through the first shunt pipe, and is input into the second shunt pipes through the third connecting pipe, and flows into each copper pipe, the water temperature in each copper pipe is basically consistent, and the heat is synchronously absorbed or the battery is heated, so that the cooling and heating effects on the battery are ensured.

[0020] Further, the return pipe group comprises a second return pipe, the second return pipe is connected with a first flow pipe through a joint, the first flow pipe is connected with a fourth connecting pipe, the fourth connecting pipe is connected with a fifth connecting pipe, the fifth connecting pipe penetrates into the inside of the energy storage container and is connected with a plurality of second flow pipes, and the second flow pipes are connected with the copper pipes. When the cooling water flows out of the other end of the copper pipe and enters the second flow pipe, the cooling water sequentially flows back into the cooling water main tower through the fifth connecting pipe, the fourth connecting pipe, the first flow pipe and the second return pipe.

[0021] The application has the advantages that the cooling water in the cooling tower matched with the thermal power generation equipment is used to cool and heat the battery, the heat energy in the cooling water is utilized, separate cooling and heating matched equipment does not need to be provided for the energy storage container, the use cost is reduced, and the switching mechanism can be switched to the heat preservation or cooling state according to different requirements, so that the heating and cooling effects are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings and embodiments.

[0023] Figure 1 It is a structural schematic diagram of the application;

[0024] Figure 2 It is a partial schematic diagram of the application;

[0025] Figure 3 It is a sectional structural schematic diagram of the energy storage container in the application;

[0026] Figure 4 It is a front structural schematic diagram of the battery fixing frame combination in the application;

[0027] Figure 5 It is a back structural schematic diagram of the battery fixing frame combination in the application;

[0028] Figure 6 It is a structural schematic diagram of the battery fixing frame and the cooling and heating auxiliary device in the application;

[0029] Figure 7 This is a schematic diagram of the cooling and heating auxiliary device in this invention;

[0030] Figure 8 This is a schematic side cross-sectional view of the energy storage container in this invention;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the heat-conducting plate in this invention;

[0032] In the picture:

[0033] 1. Thermal power generation equipment; 2. Cooling water main tower; 3. Cooling water pipe; 4. First return pipe; 5. First water pump; 6. Cooling water tower; 7. First connecting pipe; 8. Electrically controlled valve; 9. Energy storage container; 10. Battery mounting bracket; 11. Battery slot; 12. Heat conduction plate; 13. Copper pipe; 14. Water supply pipe assembly; 15. Return pipe assembly; 16. Cooling and heating auxiliary device; 17. Second confluence pipe; 18. Smoke sensor; 19. Water level sensor; 20. Slide rail; 21. Double... 21. Lead screw; 22. Slider; 23. Motor; 24. Mounting bracket; 25. Drive motor; 26. Gear; 27. Rack; 28. Connecting plate; 29. ​​Heating and insulation partition; 30. Cooling auxiliary plate; 31. Insulation foam; 32. Heat dissipation fins; 33. Second water pump; 34. Second connecting pipe; 35. First branch pipe; 36. Third connecting pipe; 37. Second branch pipe; 38. Second return pipe; 39. First confluence pipe; 40. Fourth connecting pipe; 41. Fifth connecting pipe. Detailed Implementation

[0034] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and the orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be limiting, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0035] Example 1:

[0036] like Figures 1-9 As shown, the present invention is a combined system of thermal power generation and energy storage container, including thermal power generation equipment 1, cooling water main tower 2, cooling water sub-tower 6, and energy storage container 9. The thermal power generation equipment 1 and the cooling water main tower 2 are connected by a cooling water pipe 3 and a first return pipe 4. A first water pump 5 is provided between the cooling water pipe 3 and the cooling water main tower 2. A first connecting pipe 7 is connected between the cooling water main tower 2 and the cooling water sub-tower 6. An electrically controlled valve 8 is provided on the first connecting pipe 7.

[0037] The inside of the energy storage container 9 is provided with a plurality of battery fixing frames 10, the inner top wall of the energy storage container 9 is provided with a firework sensor 18, and the inner bottom wall is provided with a water level sensor 19. The battery fixing frame 10 is provided with a plurality of battery slots 11 distributed in an up-down manner, the top and bottom of each battery slot 11 are provided with a heat conduction plate 12, the inside of the heat conduction plate 12 is a cavity and is provided with a coiled copper pipe 13, one end of the copper pipe 13 penetrates out of the front end of the heat conduction plate 12 and is connected with a water delivery pipe group 14, the other end of the copper pipe 13 penetrates out of the rear end of the heat conduction plate 12 and is connected with a return pipe group 15, the water delivery pipe group 14 is connected with the cooling water sub-tower 6, the return pipe group 15 is connected with the cooling water main tower 2, and the battery fixing frame 10 is provided with a cooling and heating auxiliary device 16.

[0038] The cooling and heating auxiliary device 16 includes a switching mechanism, a plurality of alternately distributed heating and heat preservation partitions 29 and cooling auxiliary plates 30, when the battery needs to be heated and heat preserved, the switching mechanism switches the heating and heat preservation partition 29 to be attached to the side of the corresponding heat conduction plate 12, and when the battery needs to be cooled, the switching mechanism switches the cooling auxiliary plate 30 to be attached to the side of the corresponding heat conduction plate 12.

[0039] The switching mechanism includes a sliding rail 20 fixedly installed on the top of the battery fixing frame 10, a bidirectional screw rod 21 installed in the inner cavity of the sliding rail 20, two sliding blocks 22 threadedly connected with the bidirectional screw rod 21, a motor 23 installed at one end of the sliding rail 20, the output shaft of the motor 23 in transmission connection with the bidirectional screw rod 21, one mounting frame 24 installed at the bottom of each sliding block 22, two mounting frames 24 respectively located at the front end and the rear end of the battery fixing frame 10, two drive motors 25 installed on each mounting frame 24, a gear 26 connected with the output shaft of each drive motor 25, two gear racks 27 meshed with the two gears 26 slidingly installed in the mounting frame 24, a plurality of connecting plates 28 installed on the gear racks 27, the heating and heat preservation partition 29 and the cooling auxiliary plate 30 installed between the two connecting plates 28, heat preservation foam 31 inlaidly installed in the inner cavity of the side of the heating and heat preservation partition 29 close to the battery fixing frame 10, and heat dissipation fins 32 integrally formed on the side of the cooling auxiliary plate 30 away from the battery fixing frame 10.

[0040] The water delivery pipe group 14 includes a second water pump 33 connected with the cooling water sub-tower 6, the second water pump 33 is connected with a second connecting pipe 34, the second connecting pipe 34 is connected with a first shunt pipe 35 through a joint, the first shunt pipe 35 is connected with a third connecting pipe 36, the third connecting pipe 36 penetrates into the inside of the energy storage container 9 and is connected with a plurality of second shunt pipes 37, and the second shunt pipes 37 are connected with the copper pipes 13.

[0041] The return pipe group 15 comprises a second return pipe 38 connected with a first confluence pipe 39 through a joint, the first confluence pipe 39 is connected with a fourth connecting pipe 40, the fourth connecting pipe 40 is connected with a fifth connecting pipe 41, the fifth connecting pipe 41 penetrates into the inside of the energy storage container 9 and is connected with a plurality of second confluence pipes 17, the second confluence pipes 17 are connected with each copper pipe 13.

[0042] The working principle and use process of the present application are as follows:

[0043] When the device is used, the cooling water (about 30℃) in the cooling water main tower 2 is pumped into the cooling water pipe 3 by the first water pump 5 to cool the thermal power generating equipment 1, and the return water (about 45℃) after heat exchange is returned into the cooling water main tower 2 for cooling.

[0044] When the battery in the energy storage container 9 needs to be cooled, the electric control valve 8 is opened to make the water in the cooling water main tower 2 flow into the cooling water sub-tower 6, and the cooling water in the cooling water sub-tower 6 can be cooled more quickly due to the relatively small volume of the cooling water sub-tower 6. After the cooling water in the cooling water sub-tower 6 is cooled, it is input into the second connecting pipe 34 through the second water pump 33, and flows into the third connecting pipe 36 connected with each energy storage container 9 through the first sub-flow pipe 35, and flows into each copper pipe 13 through the third connecting pipe 36 and the second sub-flow pipe 37. The heat of the battery is absorbed by the heat conduction plate 12 and exchanged into the copper pipe 13, and the cooling water takes away the heat when flowing through the copper pipe 13, realizing the cooling of the battery. At the same time, the driving motor 25 is controlled to drive the gear 26 to rotate, and the rack 27 is driven to ascend and descend by the transmission between the gear 26 and the rack 27, so that the cooling auxiliary plate 30 is aligned with the heat conduction plate 12 in front and back, and then the motor 23 is controlled to drive the sliding block 22 to reset, so that the cooling auxiliary plate 30 contacts with the front and back sides of the heat conduction plate 12 to absorb part of the heat. The heat dissipation fins 32 increase the contact area between the cooling auxiliary plate 30 and the air to improve the heat exchange effect between the cooling auxiliary plate 30 and the air, thereby improving the efficiency and effect of the cooling of the battery by the heat conduction plate 12.

[0045] When the battery needs to be heated, the backflow water (about 45℃) from the thermal power plant 1 in the cooling water main tower 2 enters the cooling water sub-tower 6, and then directly enters the second connecting pipe 34 through the second water pump 33, and then flows into each copper pipe 13 through the first shunt pipe 35, the third connecting pipe 36 and the second shunt pipe 37 in turn, and the higher temperature water (about 45℃) is used to heat the heat-conducting plate 12, thereby heating the battery, at the same time, the control motor 23 is controlled to drive the bidirectional screw rod 21 to rotate, and the mounting bracket 24 is driven away from the battery fixing bracket 10 by the screw transmission between the bidirectional screw rod 21 and the sliding block 22, at this time, the driving motor 25 is controlled to drive the gear 26 to rotate, and the rack 27 is lifted by the transmission of the gear 26 and the rack 27, so that the heating and heat-insulating partition plate 29 is aligned with the heat-conducting plate 12 in front and back, then the control motor 23 is controlled to reset the sliding block 22, so that the heat-insulating foam 31 contacts the front and back ends of the heat-conducting plate 12, and the exposed parts of the heat-conducting plate 12 in front and back are covered and heat-insulated by the heat-insulating foam 31, thereby ensuring the heating efficiency of the heat-conducting plate 12 to the battery.

[0046] When the cooling water flows out from the other end of the copper pipe 13, it enters the second confluence pipe 17, and then flows back into the cooling water main tower 2 through the fifth connecting pipe 41, the fourth connecting pipe 40, the first confluence pipe 39 and the second backflow pipe 38 in turn, when the device is used, the smoke and fire sensor 18 is used to monitor whether the energy storage container 9 is on fire in real time, and the water level sensor 19 is used to sense whether there is water accumulation at the bottom of the energy storage container 9, so as to discover abnormal conditions in time.

[0047] The above ideal embodiments according to the present application are for illustration, and related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.

Claims

1. A combined system of thermal power generation and energy storage container, characterized in that: Includes thermal power generation equipment (1), cooling water main tower (2) and energy storage container (9); The thermal power generation equipment (1) is connected to the cooling water main tower (2) by a cooling water pipe (3) and a first return pipe (4). The energy storage container (9) is connected to the cooling water main tower (2) by a water supply pipe assembly (14) and a return pipe assembly (15). The energy storage container (9) is equipped with several battery mounting brackets (10). The battery mounting brackets (10) are provided with several battery slots (11) arranged vertically. Each battery slot (11) is provided with a heat-conducting plate (12) at the top and bottom. The heat-conducting plate (12) is hollow inside and is equipped with a coiled copper tube (13). The two ends of the copper tube (13) pass through the heat-conducting plate (12) and are respectively connected to the water supply pipe group (14) and the return pipe group (15). The battery mounting brackets (10) are equipped with a cooling and heating auxiliary device (16). The cooling and heating auxiliary device (16) includes a switching mechanism, several alternately distributed heating and heat preservation partitions (29) and cooling auxiliary plates (30). When the battery needs to be heated and kept warm, the switching mechanism switches the heating and heat preservation partitions (29) to be in contact with the side of the corresponding heat-conducting plate (12). When the battery needs to be cooled, the switching mechanism switches the cooling auxiliary plates (30) to be in contact with the side of the corresponding heat-conducting plate (12). The switching mechanism includes a slide rail (20) fixedly installed on the top of the battery mounting bracket (10). A bidirectional lead screw (21) is installed in the inner cavity of the slide rail (20). Two sliders (22) are threadedly connected to the bidirectional lead screw (21). A motor (23) is installed at one end of the slide rail (20). The output shaft of the motor (23) is connected to the bidirectional lead screw (21) for transmission. A mounting bracket (24) is installed at the bottom of each slider (22). The two mounting brackets (24) are located at the front end and rear end of the battery mounting bracket (10) respectively. Two symmetrically arranged racks (27) are slidably installed on each mounting bracket (24). Each rack (27) meshes with a gear (26), and the gear (26) is connected to the output shaft of the drive motor (25). A heating and heat preservation partition (29) and a cooling auxiliary plate (30) are installed between the two racks (27).

2. The combined system of thermal power generation and energy storage container according to claim 1, characterized in that: The heating and insulation partition (29) has insulation foam (31) embedded in the inner cavity of the side near the battery mounting bracket (10).

3. The combined system of thermal power generation and energy storage container according to claim 2, characterized in that: The cooling auxiliary plate (30) has heat dissipation fins (32) integrally formed on the side away from the battery holder (10).

4. The combined system of thermal power generation and energy storage container according to claim 1, characterized in that: The inner top wall of the energy storage container (9) is equipped with a smoke and fire sensor (18), and the inner bottom wall of the energy storage container (9) is equipped with a water level sensor (19).

5. The combined system of thermal power generation and energy storage container according to claim 1, characterized in that: A cooling water tower (6) is provided between the energy storage container (9) and the cooling water main tower (2). The capacity of the cooling water tower (6) is smaller than that of the cooling water main tower (2). A first connecting pipe (7) is connected between the cooling water main tower (2) and the cooling water tower (6). An electric control valve (8) is provided on the first connecting pipe (7).

6. The combined system of thermal power generation and energy storage container according to claim 5, characterized in that: The water supply pipe assembly (14) includes a second water pump (33) connected to the cooling water tower (6), the second water pump (33) being connected to a second connecting pipe (34), the second connecting pipe (34) being connected to a first branch pipe (35) via a connector, the first branch pipe (35) being connected to a third connecting pipe (36), the third connecting pipe (36) penetrating into the interior of the energy storage container (9) and being connected to multiple second branch pipes (37), the second branch pipes (37) being connected to each copper pipe (13).

7. The combined system of thermal power generation and energy storage container according to claim 5, characterized in that: The return pipe assembly (15) includes a second return pipe (38), which is connected to a first merging pipe (39) via a connector. The first merging pipe (39) is connected to a fourth connecting pipe (40), which is connected to a fifth connecting pipe (41). The fifth connecting pipe (41) penetrates into the interior of the energy storage container (9) and is connected to multiple second merging pipes (17). The second merging pipes (17) are connected to various copper pipes (13).

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