A new energy storage power station based on distributed design and a dispatching method

Abstract

The application relates to the technical field of energy storage power stations, in particular to a new energy energy storage power station based on distributed design and a scheduling method, which comprises a power station box body, a battery rack is arranged in the power station box body, the battery rack comprises a plurality of battery partitions which are arranged at equal intervals from top to bottom; a supporting frame is arranged below the battery partitions, a fire blocking assembly is arranged between the supporting frame and the battery partitions, the fire blocking assembly comprises a plurality of strip-shaped plates which are arranged side by side, and the strip-shaped plates are connected together through steel wires; beneficial effects are as follows: the supporting frame is arranged below the battery partitions, a gap is left between the supporting frame and the battery partitions, and the fire blocking assembly is placed in the gap; the expansion gas in the expansion ring is heated and expanded, the sleeve ring is separated from the sleeve rod, at this time, the lower end of the fire blocking assembly slides downward, the whole fire blocking assembly is deformed, until the fire blocking assembly is blocked on the side of the battery module, and then the battery module on the adjacent battery rack is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the field of energy storage power station technology, specifically to a new energy storage power station and scheduling method based on distributed design. Background Technology

[0002] An energy storage power station is a power facility that stores electrical energy through physical or chemical means and releases it when needed. Its main function is to charge the power grid when the load is low and discharge it during peak periods in order to balance power supply and demand, improve energy efficiency, and ensure the stable operation of the power grid.

[0003] In the prior art, Chinese invention with announcement number CN120413893A discloses a distributed new energy storage power station and a scheduling method. It uses a spacing adjustment part composed of sleeve one and sleeve two to realize dynamic adjustment of the battery layer spacing by utilizing the principle of gas thermal expansion and contraction. In a high-temperature environment, the gas expands, increasing the air circulation cross-sectional area and reducing external cooling energy consumption. In a low-temperature environment, the gas contracts, reducing the layer spacing and decreasing the air circulation cross-sectional area.

[0004] However, in traditional energy storage power stations, when a single battery module experiences thermal runaway, the heat can easily be transferred to adjacent battery modules via air convection, triggering a chain reaction that can lead to the entire storage unit burning out, posing a significant safety hazard. Therefore, this invention proposes a new energy storage power station based on distributed design and a scheduling method to address the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a new energy storage power station and scheduling method based on distributed design, so as to solve the problem mentioned in the background art that after a single battery module thermally runs away, the heat is easily transferred to other battery modules by air convection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a new energy storage power station based on distributed design, comprising: The power station enclosure has a battery rack inside. The battery rack includes multiple battery partitions that are evenly spaced from top to bottom. Hollow columns are fixed at the four corners of each battery partition. Battery modules are placed on the upper surface of each battery partition. A support frame is provided below the battery separator, and a fire-blocking component is provided between the support frame and the battery separator. The fire-blocking component includes multiple strip plates arranged in parallel and connected together by steel wire ropes. The fire-blocking component is generally arranged in the shape of a "𠃍", and the lower end of the fire-blocking component is located on one side of the battery module. A connecting rope is fixedly provided at the upper edge of the fire-blocking component, and a collar is fixed at one end of the connecting rope. A retaining ring is provided on both sides of the support frame. A sleeve rod is fixedly connected to one side of the retaining ring. The collar is movably sleeved on the outside of the sleeve rod, and an expansion ring is provided between the retaining ring and the sleeve ring. The expansion ring is filled with expanding gas and is bonded and fixed to the side of the retaining ring.

[0007] Preferably, the support frame is configured in a "U" shape, with a vertical plate fixedly installed at one end of the support frame away from the fire baffle assembly, and the upper surface of the vertical plate being fixedly connected to the lower surface of the battery separator. A reversing roller is installed at the other end of the support frame, and the reversing roller is positioned on the inner side of the corner of the fire baffle assembly.

[0008] Preferably, the reversing roller is located between two hollow columns, a roller shaft is movably installed through the middle of the reversing roller, and the two ends of the roller shaft respectively pass through the two hollow columns, and multiple equally spaced support rollers are rotatably installed in the middle of the support frame.

[0009] Preferably, the reversing roller has an annular groove one and an annular groove two on its surface, and the annular groove one corresponds to the wire rope. The other end of the support frame is fixedly installed with a support leg, one end of which is located in the inner cavity of the annular groove two and is movably sleeved on the outside of the roller shaft.

[0010] Preferably, guide grooves are provided on the sides of the two hollow columns located at both ends of the reversing roller that are close to each other. Guide rods are fixed on both sides of the lower end of the fire-blocking assembly, and the two guide rods respectively move through the guide grooves on the two hollow columns. A counterweight is fixedly embedded at the lower end of the fire-blocking assembly, and limit blocks are fixed on both sides of the upper end of the fire-blocking assembly. When the fire-blocking assembly slides, it drives the limit blocks to abut against the surface of the hollow column.

[0011] Preferably, a fixing plate is fixedly installed in the inner cavity of the hollow column, a sliding block is provided below the fixing plate, and the sliding block is fixedly connected to the end of the guide slide rod. A guide cylinder is fixedly connected to the middle of the sliding block, and a guide post is movably installed through the inner cavity of the guide cylinder. The upper end of the guide post is fixedly connected to the fixing plate, and a thrust spring is sleeved on the outer side of the upper end of the guide post. The upper end of the thrust spring is fixedly connected to the lower surface of the fixing plate.

[0012] Preferably, a connecting frame is fixedly installed at each of the four corners of the battery separator. The cross-section of the connecting frame is set in an "L" shape, and the connecting frame fits and covers the edge of the hollow column. A baffle and a guide groove are respectively provided on both sides of the opening of the guide groove. The baffle, the connecting frame, and the hollow column are fixed together by bolts. The baffle strip is welded and fixed to the surface of the hollow column. The lower end of the fireproof assembly is located between the baffle and the guide groove.

[0013] Preferably, a fire extinguishing agent main pipe is provided on the outer side of the battery rack, and the fire extinguishing agent main pipe is installed on the inner wall of the back of the power station box. Multiple equally spaced branch pipes are fixedly connected to the fire extinguishing agent main pipe. Multiple equally spaced nozzles are installed on the branch pipes, and the nozzles are directly facing the gap between the battery separator and the battery module. A control valve is installed at the connection between the branch pipe and the fire extinguishing agent main pipe. A proximity switch is installed on the inner wall of the hollow column, and the proximity switch and the control valve are electrically connected through a control line. When the sliding block slides down, it touches the proximity switch and opens the control valve.

[0014] Preferably, a fixed shaft is fixedly provided on both sides of the support frame, a connecting plate is fixedly connected to the outer side of the retaining ring, a bushing is fixed to one end of the connecting plate, and the bushing is rotatably sleeved on the outer side of the fixed shaft. A return torsion spring is provided between the bushing and the side of the support frame. The support frame, the connecting plate, and the connecting rope form an obtuse triangle structure, and the expansion ring is pressed down and pressed against the upper surface of the battery separator. The diameters of the expansion ring, the retaining ring, and the collar decrease in sequence.

[0015] A scheduling method for a new energy storage power station based on the above-mentioned distributed design specifically includes the following steps: Step 1: When a single battery module experiences thermal runaway, its upper expansion ring expands due to heat and pushes against the collar, causing the collar to detach from the sleeve rod. The fire-blocking assembly slides and deforms under the combined influence of the thrust spring and the weight of its lower half until the fire-blocking assembly completely blocks the side of the battery module. Step 2: When the sliding block slides down to the lowest position, it touches the proximity switch. The proximity switch opens the control valve connected to it, and the extinguishing agent in the main extinguishing agent pipe enters the inner cavity of the branch pipe and is sprayed out from the nozzle, thus suppressing the thermal runaway of the battery module.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention features a support frame positioned below the battery separator, with a gap between the support frame and the battery separator. A fire-blocking component is placed within this gap. The fire-blocking component comprises multiple parallel strip plates connected together by steel wire ropes. A collar is connected to the side of one strip plate via a connecting rope, which is looped around the outside of a sleeve rod. The sleeve rod is fixed to the side of the collar. An expansion ring, made of flexible material and filled with expanding gas, is positioned between the collar and the sleeve. When a single battery module experiences thermal runaway, the expanding gas inside the expansion ring expands due to heat, causing the collar to detach from the sleeve rod. At this point, the lower end of the fire-blocking component slides downward, deforming the entire fire-blocking component until it blocks the side of the battery module, thus preventing battery modules on adjacent battery racks from being affected. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the battery rack structure of the present invention; Figure 3 This is a schematic diagram of the structural deformation of the fire-blocking component of the present invention; Figure 4 This is a three-dimensional schematic diagram of the reversing roller structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the fire-blocking component and support frame structure of the present invention; Figure 6 This is a schematic diagram showing the separation of the collar and expansion ring structures of the present invention; Figure 7 This is a schematic diagram of the internal structure of the hollow column of the present invention; Figure 8 This is a schematic diagram showing the connection between the connecting frame and the hollow column structure of the present invention; Figure 9 This is a schematic diagram of the expansion ring structure installation in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram showing the separation of the connecting plate and the support frame structure in Embodiment 2 of the present invention.

[0018] In the diagram: 1. Power station enclosure; 2. Battery rack; 21. Hollow column; 22. Battery separator; 23. Connecting frame; 231. Baffle; 24. Guide chute; 25. Stop bar; 26. Fixing plate; 27. Guide column; 28. Thrust spring; 3. Battery module; 4. Fireproof assembly; 41. Strip plate; 42. Steel wire rope; 43. Limiting block; 44. Connecting rope; 45. Collar; 46. Guide slide rod; 461. Sliding block; 462. Guide cylinder; 47. Counterweight; 5. Support frame; 51. Reversing roller; 511. Roller shaft; 512. Annular groove one; 513. Annular groove two; 52. Support roller; 53. Support leg; 54. Vertical plate; 55. Retaining ring; 56. Sleeve rod; 57. Expansion ring; 58. Connecting plate; 581. Bushing; 59. Fixed shaft; 591. Return torsion spring; 6. Main extinguishing agent pipe; 61. Branch pipe; 62. Nozzle; 63. Control valve; 64. Control line; 65. Proximity switch. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0020] Please see Figures 1 to 10 The present invention provides a technical solution: Example 1: A new energy storage power station based on distributed design, comprising: a power station enclosure 1.

[0021] Specifically, a battery rack 2 is installed inside the power station housing 1. Multiple battery racks 2 are installed inside the power station housing 1, and a certain gap is left between two adjacent battery racks 2 to allow airflow for heat dissipation. The battery rack 2 includes multiple battery partitions 22 distributed at equal intervals from top to bottom. Hollow columns 21 are fixed at the four corners of each battery partition 22. The hollow columns 21 fix multiple battery partitions 22 together to form a three-dimensional frame structure. A battery module 3 is placed on the upper surface of the battery partition 22. The distance between two adjacent battery partitions 22 is greater than the thickness of the battery module 3. A gap is left between the battery module 3 and the battery partition 22 above it to allow airflow for heat dissipation. In the event of thermal runaway of the battery module 3, fire extinguishing agent can be sprayed to cover the surface of the battery module 3. Secondly, a support frame 5 is provided below the battery separator 22, and a fire-blocking component 4 is provided between the support frame 5 and the battery separator 22. The fire-blocking component 4 can slide horizontally between the support frame 5 and the battery separator 22. The fire-blocking component 4 includes multiple strip plates 41 arranged in parallel, and the multiple strip plates 41 are connected together by steel wire ropes 42. Figure 5 As shown, the fire-blocking component 4 can be bent and deformed. When a part of the fire-blocking component 4 detaches from the support frame 5, that part can naturally droop under gravity. The fire-blocking component 4 is generally designed in the shape of a "𠃍", and the lower end of the fire-blocking component 4 is located on one side of the battery module 3. After the fire-blocking component 4 slides and naturally droops, it can cover the side of the battery module 3, thereby blocking the battery modules 3 on two adjacent battery racks 2. A connecting rope 44 is fixedly installed at the upper edge of the fire-blocking component 4, and a collar 45 is fixedly installed at one end of the connecting rope 44. Both sides of the support frame 5 are provided with retaining rings 55. A sleeve rod 56 is fixedly connected to one side of the retaining ring 55. The collar 45 is movably sleeved on the outside of the sleeve rod 56. The collar 45 can pull the upper part of the fire-blocking component 4 through the connecting rope 44, thereby preventing the fire-blocking component from being pulled. When the sleeve 45 disengages from the rod 56, the fire-blocking component 4 can slide automatically due to the gravity of its lower half, thus automatically shielding the side of the battery module 3. An expansion ring 57 is provided between the retaining ring 55 and the sleeve 45. The expansion ring 57 is filled with expanding gas and is bonded to the side of the retaining ring 55. The expansion ring 57 is fixed to the retaining ring 55 to prevent it from disengaging from the rod 56. When the battery module 3 below the fire-blocking component 4 experiences thermal runaway, the temperature around the battery module 3 rises. The expanding gas inside the expansion ring 57 expands after being heated, allowing the expansion ring 57 to push the sleeve 45 to move horizontally, forcing the sleeve 45 to disengage from the rod 56. This allows the fire-blocking component 4 to slide automatically and fall downwards until it shields the side of the battery module 3.

[0022] To support the fire-blocking component 4, the support frame 5 of this application is configured in a "U" shape. A vertical plate 54 is fixedly installed at one end of the support frame 5 away from the fire-blocking component 4, and the upper surface of the vertical plate 54 is fixedly connected to the lower surface of the battery separator 22. A reversing roller 51 is provided at the other end of the support frame 5, and the reversing roller 51 is placed against the inner side of the corner of the fire-blocking component 4. The reversing roller 51 can be used to support the corner of the fire-blocking component 4. The reversing roller 51 can rotate itself, thereby reducing the friction between it and the fire-blocking component 4 and ensuring that the fire-blocking component 4 can fall down smoothly.

[0023] To reduce the friction between the fire-blocking assembly 4 and the support frame 5, the reversing roller 51 of this application is located between two hollow columns 21. A roller shaft 511 is movably installed through the middle of the reversing roller 51, and the two ends of the roller shaft 511 respectively pass through the two hollow columns 21. The reversing roller 51 is rotatably installed between the two hollow columns 21 via the roller shaft 511. Multiple equally spaced support rollers 52 are rotatably installed in the middle of the support frame 5. The arrangement of the support rollers 52 can be used to reduce the friction between the fire-blocking assembly 4 and the support frame 5, so that the fire-blocking assembly 4 can slide more smoothly on the upper surface of the support frame 5.

[0024] To reinforce the support frame 5, this application also provides annular groove 1 512 and annular groove 2 513 on the surface of the reversing roller 51, with annular groove 1 512 corresponding to the wire rope 42. Multiple annular groove 1 512 and multiple wire ropes 42 are provided, and the multiple wire ropes 42 are evenly distributed along the length direction of the strip plate 41 to ensure a tighter connection between the multiple strip plates 41. A support leg 53 is fixedly installed at the other end of the support frame 5. One end of the support leg 53 is located in the inner cavity of annular groove 2 513 and is movably sleeved on the outside of the roller shaft 511. The support leg 53 is provided to support the other end of the support frame 5 and prevent the support frame 5 from deforming due to its own weight and the downward pressure of the fire baffle assembly 4.

[0025] To guide the downward movement of the lower end of the fire-blocking assembly 4, this application further includes guide grooves 24 on the sides of the two hollow columns 21 located at both ends of the reversing roller 51 that are close to each other. Guide rods 46 are fixed on both sides of the lower end of the fire-blocking assembly 4, and the two guide rods 46 respectively move through the guide grooves 24 on the two hollow columns 21. The guide rods 46 can only slide up and down within the cavity of the guide grooves 24. The guide rods 46 and the guide grooves 24 cooperate to guide the movement of the lower end of the fire-blocking assembly 4. A counterweight 47 is fixedly embedded in the lower end of the fire-blocking assembly 4 to increase the gravity of the lower half of the fire-blocking assembly 4 and ensure the downward movement of the lower half of the fire-blocking assembly 4. The movement is smoother and less prone to jamming. Limiting blocks 43 are fixed on both sides of the upper end of the fireproof component 4. When the fireproof component 4 slides, it causes the limiting blocks 43 to abut against the surface of the hollow column 21. The limiting blocks 43 can be used to limit the position of the upper end of the fireproof component 4, preventing the upper end of the fireproof component 4 from completely separating from the support frame 5 and the battery separator 22. In the initial state, the horizontal length of the upper part of the fireproof component 4 is greater than the vertical length of the lower part. At this time, the side of the battery module 3 is open, and air can circulate naturally. After the fireproof component 4 slides and deforms, the horizontal length of the upper part of the fireproof component 4 is less than the vertical length of the lower part. At this time, the side of the battery module 3 is blocked by the fireproof component 4.

[0026] To accelerate the response speed of the fire-blocking assembly 4 to the side shielding of the battery module 3, this application further includes a fixing plate 26 fixedly installed in the inner cavity of the hollow column 21, a sliding block 461 installed below the fixing plate 26, and the sliding block 461 fixedly connected to the end of the guide slide rod 46. When the sliding block 461 slides down in the inner cavity of the hollow column 21, it can drive the lower end of the fire-blocking assembly 4 to move downwards. A guide cylinder 462 is fixedly connected to the middle of the sliding block 461, and a guide post 27 is movably installed through the inner cavity of the guide cylinder 462. The upper end of the guide post 27 is fixedly connected to the fixing plate 26. The guide post 27 is used to guide the vertical sliding of the sliding block 461. The entire sliding block 461... The size is slightly smaller than the inner cross-sectional size of the hollow column 21, so as to avoid friction between the sliding block 461 and the inner wall of the hollow column 21, which would cause the sliding block 461 to be stuck. A thrust spring 28 is sleeved on the outer side of the upper end of the guide column 27, and the upper end of the thrust spring 28 is fixedly connected to the lower surface of the fixing plate 26. When the sliding block 461 is at the uppermost position of the stroke, the thrust spring 28 is in a compressed state. When the collar 45 at the upper end of the fireproof assembly 4 separates from the sleeve rod 56, the thrust force generated by the thrust spring 28 on the sliding block 461 can quickly push the sliding block 461 down, thereby causing the lower half of the fireproof assembly 4 to fall down quickly, accelerating the response speed of the fireproof assembly 4 to the side shielding of the battery module 3.

[0027] To prevent deformation of the lower half of the fire-blocking assembly 4, this application also includes connecting brackets 23 fixedly installed at each of the four corners of the battery separator 22. The cross-section of the connecting brackets 23 is L-shaped, and the connecting brackets 23 fit snugly over the edges of the hollow column 21. A baffle 231 and a guide groove 24 are respectively installed on both sides of the opening of the guide groove 24. The baffle 231, connecting brackets 23, and hollow column 21 are fixed together by bolts. Figure 8 As shown, a chamfer is provided at the upper corner of the baffle 231, and the baffle strip 25 is welded and fixed to the surface of the hollow column 21. The lower end of the fireproof component 4 is located between the baffle 231 and the guide slide 24. The connecting frame 23 and the baffle strip 25 respectively block the inner and outer sides of the lower half of the fireproof component 4, thereby preventing the lower half of the fireproof component 4 from bending and deforming, ensuring that the lower half of the fireproof component 4 can remain vertical, and thus providing a good shielding effect on the side of the battery module 3.

[0028] To cool down the thermally runaway battery module 3, this application further includes a fire extinguishing agent main pipe 6 installed on the outer side of the battery rack 2, and the fire extinguishing agent main pipe 6 is installed on the inner wall of the back of the power station housing 1. The fire extinguishing agent main pipe 6 is used to transport fire extinguishing agent, which is liquid perfluorohexanone. Multiple equally spaced branch pipes 61 are fixedly connected to the fire extinguishing agent main pipe 6, and multiple equally spaced nozzles 62 are installed on the branch pipes 61. The nozzles 62 are directly facing the gap between the battery separator 22 and the battery module 3, and can be used to spray the fire extinguishing agent. When thermal runaway occurs in group 3, perfluorohexanone is sprayed onto the surface of battery module 3. Due to its low boiling point of only 49°C, perfluorohexanone evaporates rapidly, carrying away a large amount of heat. A control valve 63 is installed at the connection between branch pipe 61 and the main extinguishing agent pipe 6 to control the delivery and disconnection of the extinguishing agent to branch pipe 61. A proximity switch 65 is installed on the inner wall of the hollow column 21, and the proximity switch 65 is electrically connected to the control valve 63 via a control line 64. When the sliding block 461 slides down, it touches the proximity switch 65 and opens the control valve 63. Figure 2 and Figure 7 As shown, the sliding block 461 can only touch the proximity switch 65 and open the control valve 63 when it slides down to the lowest point of its travel.

[0029] In order to press the expansion ring 57 onto the upper surface of the battery module 3, this application also includes fixing shafts 59 fixedly provided on both sides of the support frame 5, a connecting plate 58 fixedly connected to the outer side of the retaining ring 55, a bushing 581 fixed to one end of the connecting plate 58, and the bushing 581 rotatably sleeved on the outside of the fixing shaft 59, such as... Figure 9 and Figure 10 As shown, the connecting plate 58 and the retaining ring 55 can only rotate around the fixed shaft 59. A return torsion spring 591 is provided between the bushing 581 and the side of the support frame 5. The return torsion spring 591 is used to reset the rotation of the connecting plate 58, so that the connecting plate 58 always has a tendency to rotate and move closer to the support frame 5. The support frame 5, the connecting plate 58, and the connecting rope 44 form an obtuse triangle structure, and the expansion ring 57 presses down and tightens on the upper surface of the battery separator 22. When the collar 45 is sleeved on the outside of the sleeve rod 56, the fireproof assembly... The tension generated by the four pairs of sleeve rods 56 can drive the connecting plate 58 to rotate, thereby pressing the expansion ring 57 against the upper surface of the battery module 3, so that the expansion ring 57 can maintain a tight fit with the battery module 3. In the event of thermal runaway of the battery module 3, the expansion ring 57 can expand immediately. In addition, the diameters of the expansion ring 57, the retaining ring 55, and the sleeve ring 45 decrease in sequence. When the expansion ring 57 presses against the upper surface of the battery module 3, the sleeve ring 45 does not come into contact with the upper surface of the battery module 3, thereby preventing the sleeve ring 45 from being stuck.

[0030] This invention also discloses a scheduling method for a new energy storage power station based on the above-described distributed design, specifically including the following steps: Step 1: When a single battery module 3 experiences thermal runaway, its upper expansion ring 57 expands due to heat and pushes the collar 45, causing the collar 45 to separate from the sleeve rod 56. The fire-blocking assembly 4 slides and deforms under the combined influence of the thrust of the thrust spring 28 and the gravity of its own lower half until the fire-blocking assembly 4 completely blocks the side of the battery module 3. Step 2: When the sliding block 461 slides down to the lowest position, it touches the proximity switch 65. The proximity switch 65 opens the control valve 63 connected to it, and the extinguishing agent in the main extinguishing agent 6 enters the inner cavity of the branch pipe 61 and is sprayed out from the nozzle 62 to suppress the thermal runaway of the battery module 3.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

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