3.45 MW high-power-density modular reactor for energy storage system

Abstract

The utility model discloses a 3.45 MW high-power-density modular reactor for an energy storage system, and belongs to the technical field of power electronic equipment. The structure comprises a module assembly box with honeycomb-shaped heat dissipation through holes, a built-in three-parallel reactor body and a high-heat-conduction heat dissipation colloid. A double-layer porous upper cover plate is arranged at the top of the module assembling box, a sliding rail type supporting base is arranged at the bottom of the module assembling box, and three reactor bodies are fixed in the box body through an assembly inner support and filled with boron nitride modified silicon-based heat dissipation glue. The heat dissipation colloid and the honeycomb through holes form a three-dimensional heat dissipation channel, gradient heat dissipation is achieved in combination with the vertical fins on the side wall, the temperature rise of the reactor body is reduced by 18-25 DEG C, and electromagnetic noise is attenuated by 10-15 dB. The slide rail assembly structure realizes rapid module replacement through a locking screw, and the operation and maintenance efficiency is improved by 60%.

Description

Technical Field

[0001] This utility model relates to the field of reactor technology, and in particular to a 3.45MW high power density modular reactor for energy storage systems. Background Technology

[0002] Traditional reactors in power electronic equipment generally adopt an integrated structural design, with their coil assemblies and heat dissipation components directly fixed inside the equipment frame. This integrated structure has significant drawbacks: First, when a single reactor unit fails, the entire equipment must be shut down and disassembled, resulting in low maintenance efficiency and affecting the continuity of system operation; Second, due to the fixed heat dissipation channel design, internal heat easily accumulates in the coil gaps, and conventional air cooling or external heat sinks are difficult to achieve directional heat dissipation, especially in the case of multiple coils in parallel, which can easily lead to local overheating and accelerate the aging of insulation materials; Third, when expanding the capacity of existing reactors, the entire heat dissipation system must be redesigned, and the lack of a modular solution with standardized interfaces results in poor engineering adaptability. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a 3.45MW high power density modular reactor for energy storage systems. The modular design of the reactor device improves the maintainability and expandability of the overall equipment, as well as the heat dissipation of the reactor device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a 3.45MW high power density modular reactor for an energy storage system, comprising a module assembly box, consisting of a cubic outer frame with poles, a detachable top cover plate, and a bottom support base. The top cover plate is provided with heat dissipation through holes arranged in a honeycomb array. A reactor assembly is disposed in the inner cavity of the module assembly box. The reactor assembly is provided with an internal support and at least one reactor body. Each reactor body is fixed to the internal support and is arranged in parallel and electrically connected to the poles. The bottom of the internal support is bolted to the support base. A heat dissipation colloid is added to the inner cavity of the module assembly box and cured to form a heat dissipation colloid, which at least covers each reactor body.

[0005] In a further technical solution, the diameter of the heat dissipation through hole is 2mm-5mm, and the porosity of the upper cover plate is 40%-60%.

[0006] In a further technical solution, the internal support of the component includes an upper frame and a lower frame, with multiple connecting rods connecting the upper frame and the lower frame. The upper frame and the lower frame are fixedly connected by the connecting rods, and the lower frame is fixed to the support base by bolts. Three iron cores are also spaced apart between the upper frame and the lower frame. The reactor body has three components, including three copper wire windings, each of which is wound around a corresponding iron core.

[0007] In a further technical solution, the bottom surface of the support base is provided with assembly guide rails on both sides, and the top of the assembly guide rail is provided with a locking screw. The locking screw moves through the assembly guide rail and is used to fasten the assembly guide rail of the whole machine to fix the modular reactor.

[0008] In a further technical solution, the side wall surface of the cubic outer frame is provided with vertical heat dissipation fins, the height of the vertical heat dissipation fins is 8mm-15mm, and the spacing between two adjacent vertical heat dissipation fins is 3mm-5mm.

[0009] In a further technical solution, the outer side of the pole post is provided with an insulating ceramic bushing, the outer wall of the insulating ceramic bushing is provided with a corrugated surface structure, the insulating ceramic bushing extends to the inner cavity of the outer frame of the cube, the insulating ceramic bushing is bonded to the heat dissipation colloid, and its corrugated surface structure and the contact surface of the heat dissipation colloid form a corrugated interlocking structure; an insertion hole is provided in the middle position of the insulating ceramic bushing.

[0010] In a further technical solution, the heat dissipation colloid is a silicon-based composite material doped with boron nitride, which has a thermal conductivity ≥2.2W / m·K at 25℃ and a viscosity of 800-1200cps before curing.

[0011] The advantages of this invention compared to the prior art after adopting the above structure are:

[0012] 1. A three-dimensional heat dissipation channel is formed through the combined effect of the honeycomb-shaped heat dissipation holes (porosity 40%-60%) in the modular assembly box and the high thermal conductivity heat dissipation colloid (≥2.2W / m·K). Actual measurements show that under 3.45MW power conditions, the temperature rise of the reactor body is reduced by 18-25℃ compared to traditional structures, and the damping effect of the heat dissipation colloid on high-frequency electromagnetic vibrations reduces noise by 10-15dB, significantly improving the operational stability of the energy storage system.

[0013] 2. Sliding rail installation design, achieving a single module height of 0.8m. 3 It integrates three sets of reactor units within its volume. The modular reactors can be quickly replaced during maintenance, reducing system downtime to one-third of that of traditional structures and improving operation and maintenance efficiency by more than 60%.

[0014] 3. The modular enclosure design filled with thermal colloid can improve its heat dissipation performance, extend the service life of the reactor windings, and reduce its failure rate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is an exploded view of the present invention. Detailed Implementation

[0019] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, a 3.45MW high power density modular reactor for an energy storage system includes: a module assembly box, consisting of a cubic outer frame 3 with pole posts 6, a detachable top cover 31, and a bottom support base 1. The top cover 31 has heat dissipation through holes 32 arranged in a honeycomb array; a reactor assembly 4, which is located inside the module assembly box. The reactor assembly 4 has an internal support and at least one reactor body. Each reactor body is fixed to the internal support and is arranged in parallel and electrically connected to the pole posts 6. The bottom of the internal support is bolted to the support base 1; and a heat dissipation colloid 5, which is injected into the inner cavity of the module assembly box and cured to form the heat dissipation colloid 5, which at least covers each reactor body.

[0021] The honeycomb-shaped heat dissipation vents with a porosity of 40%-60% in the modular assembly box, combined with the high thermal conductivity heat dissipation colloid (≥2.2W / m·K), form a three-dimensional heat dissipation channel. Actual measurements show that under 3.45MW power conditions, the temperature rise of the reactor body is reduced by 18-25℃ compared to traditional structures, and the damping effect of the heat dissipation colloid on high-frequency electromagnetic vibrations reduces noise by 10-15dB, significantly improving the operational stability of the energy storage system.

[0022] The module housing design filled with thermal colloid 5 can improve its heat dissipation performance, extend the service life of the reactor body windings, and reduce its failure rate.

[0023] Specifically, the diameter of the heat dissipation hole 32 is 3mm, and the porosity of the upper cover plate 31 is 42%.

[0024] Specifically, the internal support of the component includes an upper frame 42 and a lower frame 41. Multiple connecting rods 43 connect the upper frame 42 and the lower frame 41. The upper frame 42 and the lower frame 41 are fixedly connected by each connecting rod 43. The lower frame 41 is fixed to the support base 1 by bolts. Three iron cores 401 are also spaced apart between the upper frame 42 and the lower frame 41. The reactor body has three components, including three copper wire windings 402. Each copper wire winding 402 is wound on the corresponding iron core 401.

[0025] Specifically, the bottom surface of the support base 1 is provided with assembly guide rails 2 on both sides, and the top of the assembly guide rail 2 is provided with a locking screw 21. The locking screw 21 moves through the assembly guide rail 2 and is used to fasten the assembly guide rail 2 of the whole machine to fix the modular reactor.

[0026] The sliding rail installation design allows for a single module to be 0.8m long. 3 It integrates three sets of reactor units within its volume. The modular reactors can be quickly replaced during maintenance, reducing system downtime to one-third of that of traditional structures and improving operation and maintenance efficiency by more than 60%.

[0027] Specifically, the side wall surface of the cubic outer frame 3 is provided with vertical heat dissipation fins 30, the height of the vertical heat dissipation fins 30 is 10mm, and the spacing between two adjacent vertical heat dissipation fins 30 is 3mm.

[0028] Specifically, the outer side of the pole post 6 is provided with an insulating ceramic bushing, the outer wall of the insulating ceramic bushing is provided with a corrugated surface structure, the insulating ceramic bushing extends to the inner cavity of the cubic outer frame 3, the insulating ceramic bushing is bonded to the heat dissipation colloid 5, and its corrugated surface structure and the contact surface of the heat dissipation colloid 5 form a corrugated interlocking structure; the middle position of the insulating ceramic bushing is provided with an insertion hole 60.

[0029] Specifically, the heat dissipation colloid 5 is a silicon-based composite material doped with boron nitride, with a thermal conductivity ≥2.2W / m·K at 25℃ and a viscosity of 1000cps before curing.

[0030] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A 3.45 MW high power density modular reactor for energy storage systems, characterized by: include: The module assembly box consists of a cubic outer frame (3) with pole posts (6), a detachable top cover plate (31) and a support base (1) at the bottom. The top cover plate (31) is provided with heat dissipation holes (32) arranged in a honeycomb array. The reactor assembly (4) is located in the inner cavity of the module assembly box. The reactor assembly (4) is provided with an internal support and at least one reactor body. Each reactor body is fixed to the internal support and is arranged in parallel and electrically connected to the pole (6). The bottom of the internal support is installed to the support base (1) by bolts. Heat dissipation colloid (5): A gel-like heat dissipation colloid is added to the inner cavity of the module assembly box and cured to form heat dissipation colloid (5). The heat dissipation colloid (5) covers at least each reactor body.

2. The 3.45 MW high power density modular reactor for energy storage system according to claim 1, characterized in that: The diameter of the heat dissipation through hole (32) is 2mm-5mm, and the porosity of the upper cover plate (31) is 40%-60%.

3. The 3.45 MW high power density modular reactor for energy storage system according to claim 2, characterized in that: The internal support of the component includes an upper frame (42) and a lower frame (41). Multiple connecting rods (43) connect the upper frame (42) and the lower frame (41). The upper frame (42) and the lower frame (41) are fixedly connected by each connecting rod (43). The lower frame (41) is fixed to the support base (1) by bolts. Three iron cores (401) are also provided between the upper frame (42) and the lower frame (41). The reactor body is provided in three quantities, including three copper wire windings (402). Each copper wire winding (402) is wound on the corresponding iron core (401).

4. The 3.45 MW high power density modular reactor for energy storage system of claim 3, wherein: The support base (1) has assembly guide rails (2) on both sides of its bottom surface. The top of the assembly guide rail (2) is provided with a locking screw (21). The locking screw (21) moves through the assembly guide rail (2) and is used to fasten the assembly guide rail (2) of the whole machine to fix the modular reactor.

5. The 3.45 MW high power density modular reactor for energy storage system according to claim 4, characterized in that: The sidewall surface of the cubic outer frame (3) is provided with vertical heat dissipation fins (30), the height of the vertical heat dissipation fins (30) is 8mm-15mm; the distance between two adjacent vertical heat dissipation fins (30) is 3mm-5mm.

6. The 3.45 MW high power density modular reactor for energy storage system according to claim 5, characterized in that: The pole post (6) is provided with an insulating ceramic bushing on its outside. The outer wall of the insulating ceramic bushing is provided with a corrugated surface structure. The insulating ceramic bushing extends into the inner cavity of the cubic outer frame (3). The insulating ceramic bushing is bonded to the heat dissipation colloid (5). Its corrugated surface structure and the contact surface of the heat dissipation colloid (5) form a corrugated interlocking structure. An insertion hole (60) is provided in the middle position of the insulating ceramic bushing.

7. The 3.45 MW high power density modular reactor for energy storage system according to claim 6, characterized in that: The heat dissipation colloid (5) is a silicon-based composite material doped with boron nitride, with a thermal conductivity of ≥2.2W / m·K at 25℃ and a viscosity of 800-1200cps before curing.

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