Mechanical buffering and heat dissipation integrated structure of energy storage battery pack in multi-energy complementary system

Abstract

The invention relates to the technical field of multi-energy complementary energy systems, in particular to a mechanical buffer and heat dissipation integrated structure of an energy storage battery pack in a multi-energy complementary system, which comprises a shell, a base, a placement seat, a buffer assembly, a heat dissipation assembly and a discharge assembly, the base is arranged at the bottom in the shell, the placement seat is used for placing an energy storage battery pack, and the placement seat is fixedly connected to the base; the buffering assembly comprises a sliding barrel, a sliding groove, a sliding rod and a first spring, the sliding groove is formed in the base, the sliding rod is arranged in the sliding groove in a sliding fit mode and makes contact with the inner wall of the sliding barrel, and the first spring is connected to the sliding rod; the heat dissipation assembly comprises a fluorinated liquid, a fixing ring, a rubber telescopic cylinder, a semiconductor refrigerator and a through hole; according to the multi-energy complementary system, through efficient heat dissipation protection, performance degradation and faults of the energy storage battery pack caused by factors such as high temperature and impact can be avoided, the service life of the battery pack is remarkably prolonged, and the equipment replacement cost of the multi-energy complementary system is reduced.

Description

Technical Field

[0001] This invention relates to the field of multi-energy complementary energy system technology, specifically to an integrated mechanical buffer and heat dissipation structure for an energy storage battery pack in a multi-energy complementary system. Background Technology

[0002] Multi-energy complementary systems are comprehensive energy utilization systems that integrate multiple energy sources (such as photovoltaic, wind power, hydropower, etc.). Among them, energy storage battery packs are the core components for realizing energy storage, peak shaving and valley filling, and their operational stability directly determines the reliability and safety of the entire system.

[0003] However, the application scenarios of multi-energy complementary systems are often quite complex, and energy storage battery packs face two major problems in actual operation: First, heat dissipation is a challenge. Energy storage battery packs continuously generate heat during charging and discharging, especially under high load or extreme environments. Heat accumulation can easily lead to an increase in battery temperature, which not only reduces the battery's charging and discharging efficiency and cycle life, but may also cause thermal runaway and safety accidents in severe cases. Second, there is insufficient protection against mechanical shock. Energy storage equipment in multi-energy complementary systems often needs to be adapted to outdoor or mobile scenarios, and is susceptible to external mechanical loads such as vibration and impact. Traditional energy storage battery installation structures have poor buffering performance and are unable to effectively absorb impact energy, which may lead to battery pack structural damage, electrode detachment, and other malfunctions, affecting the normal operation of the system.

[0004] In existing technologies, heat dissipation and buffer protection for energy storage battery packs are mostly designed separately. For heat dissipation, air cooling, water cooling, or a single liquid cooling structure are commonly used. Air cooling has low efficiency and cannot meet the heat dissipation requirements of high-power energy storage battery packs; water cooling structures pose a risk of leakage, easily leading to battery short circuits, and are unsuitable for low-temperature outdoor environments; single liquid cooling structures have limited choices of heat dissipation media, and some media may damage the battery upon contact. Furthermore, the heat dissipation system and buffer structure are independent, occupying a large space and having poor adaptability. For buffer protection, traditional buffer structures often use a single spring or rubber pad, with limited buffering effect and unable to work in conjunction with the heat dissipation system. Under significant impact, they still cannot effectively protect the battery pack. At the same time, the buffer structure may obstruct heat dissipation channels, further exacerbating the heat dissipation problem. Therefore, to address the operational requirements of energy storage battery packs in multi-energy complementary systems, an integrated structure that combines efficient heat dissipation and reliable mechanical buffering performance, is easy to operate, and has strong adaptability is needed to solve the above technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes an integrated mechanical buffering and heat dissipation structure for energy storage battery packs in a multi-energy complementary system.

[0006] The technical solution for achieving the purpose of this invention is as follows: an integrated mechanical buffer and heat dissipation structure for an energy storage battery pack in a multi-energy complementary system, including a shell, a base, a placement seat, a buffer assembly, a heat dissipation assembly, and a discharge assembly; the base is located at the bottom of the shell, the placement seat is used to place the energy storage battery pack, and the placement seat is fixedly connected to the base; the buffer assembly includes a slide cylinder, a slide groove, a slide rod, and a first spring, the slide groove is opened on the base, the slide rod is slidably engaged in the slide groove, and the slide rod is in contact with the inner wall of the slide cylinder, and the first spring is connected to the slide rod; the heat dissipation assembly includes a fluorinated liquid, a fixing ring, a rubber telescopic cylinder, a semiconductor cooler, and a through hole, the through hole is opened on the slide cylinder, the semiconductor cooler is installed on the slide cylinder, the fixing ring is fixed to the outside of the slide cylinder, the rubber telescopic cylinder is connected between the fixing ring and the inner wall of the shell, the fluorinated liquid is located in the area enclosed by the rubber telescopic cylinder, and the bottom end of the slide cylinder is immersed in the fluorinated liquid.

[0007] Furthermore, the emission assembly includes a transparent rotating tube, a cavity, a limiting rod, a second spring, and a limiting groove. The transparent rotating tube is connected to the interior of the outer shell. The limiting groove is opened at both ends of the transparent rotating tube. The cavity is opened on the outer shell. The limiting rod is slidably connected to the cavity. The front end of the limiting rod is spherical and can be embedded in the limiting groove under the action of the second spring, so that the transparent rotating tube is fixed in the state of opening upward or downward.

[0008] Furthermore, the buffer assembly also includes a support rod and a top plate, the support rod being disposed on the outer casing and the top plate being connected to the top of the support rod.

[0009] Furthermore, multiple through holes are provided and are evenly distributed on the wall of the slide cylinder.

[0010] Furthermore, multiple slide rods are provided, and the multiple slide rods are evenly distributed along the circumference of the slide cylinder.

[0011] Furthermore, the emission assembly also includes a plug that is detachably engaged with the opening of the transparent rotating tube.

[0012] Furthermore, the rubber telescopic cylinder has a flexible sealing structure, which can expand and contract with the movement of the fixed ring, and the rubber telescopic cylinder does not react with the fluorinated liquid.

[0013] The significant advantages of this invention compared to existing technologies are:

[0014] Firstly, in this invention, the buffer component and the heat dissipation component are organically integrated. The mechanical buffer mechanism, consisting of a slide cylinder, a slide rod, and a first spring, combined with the hydraulic buffering effect of the fluorinated liquid, forms a double buffer protection, which can effectively absorb external vibration and impact energy and prevent the energy storage battery pack from being damaged by mechanical loads. At the same time, the fluorinated liquid enters the interior of the slide cylinder through the through hole and makes full contact with the energy storage battery pack to achieve efficient heat dissipation. With the auxiliary heat dissipation of the semiconductor cooler, the heat generated during battery operation can be quickly removed, solving the problem of mutual interference between buffering and heat dissipation in the traditional separate design, and significantly improving the operational stability and safety of the energy storage battery pack in the multi-energy complementary system.

[0015] Secondly, in this invention, by selecting fluorinated liquid as the heat dissipation medium, the fluorinated liquid has good thermal conductivity and will not cause damage to the battery pack after contact with it. Even if a small amount of evaporation occurs, it will not cause safety hazards, thus solving the leakage and short-circuit risks of traditional water-cooled structures and the corrosiveness of some heat dissipation media. The amount of fluorinated liquid injected can be directly observed through the transparent tube, ensuring that the fluorinated liquid does not submerge the placement seat and avoids the performance degradation caused by long-term immersion of the battery pack. At the same time, the fluorinated liquid can be flexibly discharged or replenished according to the outside temperature, so that the battery pack is always at a suitable operating temperature, which is suitable for complex operating environments such as outdoor and high-load conditions of multi-energy complementary systems.

[0016] Thirdly, in this invention, when the slide cylinder is impacted, the slide rod slides along the groove on the base, and the first spring undergoes elastic deformation to achieve initial buffering. At the same time, the bottom end of the slide cylinder is immersed in the fluorinated liquid, which can further absorb the impact energy, forming a double buffer. The buffering effect is significantly better than that of the traditional single buffer structure. In addition, a rubber telescopic cylinder is connected between the fixing ring on the outside of the slide cylinder and the inner wall of the outer shell. This can guide and limit the movement of the slide cylinder, while ensuring that the fluorinated liquid is always in the sealed rubber telescopic cylinder, avoiding the fluorinated liquid from being exposed to the air and becoming contaminated, and ensuring the long-term stability of heat dissipation and buffering performance.

[0017] Fourthly, in this invention, the fluorinated liquid can be injected and discharged by rotating the transparent tube. The limiting rod can be automatically embedded into the limiting groove under the action of the second spring, so as to fix the transparent tube in the state of opening upward (injection) and downward (discharge). The operation is simple and quick. The overall structure has few parts and low assembly difficulty. It does not require a complex control system, and the manufacturing and maintenance costs are low. It is suitable for energy storage battery packs of different specifications in multi-energy complementary systems and has a wide range of application prospects.

[0018] Fifthly, this invention, through efficient heat dissipation protection, can avoid performance degradation and failure of energy storage battery packs caused by factors such as high temperature and impact, significantly extending the service life of the battery packs and reducing the equipment replacement cost of multi-energy complementary systems; at the same time, stable battery operating status can improve energy storage and conversion efficiency, ensure the continuous and stable operation of multi-energy complementary systems, and further improve the overall economic and social benefits of the system. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a cross-sectional view of the internal structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the slide tube in this invention;

[0024] Figure 5 This is a schematic diagram of the structure of the rubber telescopic cylinder in this invention;

[0025] Figure 6 In this invention Figure 2 The diagram shows an enlarged view of part A.

[0026] Figure 7 In this invention Figure 3 The enlarged view of part B of the structure is shown.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Outer shell; 2. Base; 3. Placement seat; 4. Buffer assembly; 41. Support rod; 42. Top plate; 43. Slide cylinder; 44. Slide groove; 45. Slide rod; 46. First spring; 5. Heat dissipation assembly; 51. Fluorinated liquid; 52. Fixing ring; 53. Rubber telescopic cylinder; 54. Semiconductor cooler; 55. Through hole; 6. Discharge assembly; 61. Transparent rotating tube; 62. Cavity; 63. Limiting rod; 64. Second spring; 65. Limiting groove. Detailed Implementation

[0029] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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.

[0030] This invention improves the integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in a multi-energy complementary system. The technical solution of this invention is as follows:

[0031] like Figures 1-7 As shown, the integrated mechanical buffer and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system includes a shell 1, a base 2, a placement seat 3, a buffer assembly 4, a heat dissipation assembly 5, and a discharge assembly 6. The base 2 is located at the bottom inside the shell 1, and the placement seat 3 is used to place the energy storage battery pack. In actual implementation, the wiring on the energy storage battery pack can be installed through the top plate 42, and the placement seat 3 is fixedly connected to the base 2. The buffer assembly 4 includes a sliding cylinder 43, a sliding groove 44, a sliding rod 45, and a first spring 46. The sliding groove 44 is opened on the base 2, the sliding rod 45 is slidably engaged in the sliding groove 44, and the sliding rod 45 is in contact with the inner wall of the sliding cylinder 43. The first spring 46 is connected to the sliding rod 45. The heat dissipation assembly 5 includes... The components include a fluorinated liquid 51, a fixing ring 52, a rubber telescopic cylinder 53, a semiconductor cooler 54, and a through hole 55. The through hole 55 is formed on the slide cylinder 43, the semiconductor cooler 54 is installed on the slide cylinder 43, the fixing ring 52 is fixed to the outside of the slide cylinder 43, the rubber telescopic cylinder 53 is connected between the fixing ring 52 and the inner wall of the outer shell 1, the fluorinated liquid 51 is located in the area enclosed by the rubber telescopic cylinder 53, and the bottom end of the slide cylinder 43 is immersed in the fluorinated liquid 51. The fluorinated liquid 51 must meet the core requirements of electrical insulation, compatibility with the rubber telescopic cylinder 53, safety and non-corrosiveness (no damage when in contact with the energy storage battery pack), and good thermal conductivity. Therefore, hydrofluoroether (HFE) series or perfluoropolyether (PFPE series) can be selected.

[0032] In this embodiment, the emission assembly 6 includes a transparent rotating tube 61, a cavity 62, a limiting rod 63, a second spring 64, and a limiting groove 65. The transparent rotating tube 61 is connected to the interior of the outer shell 1. The limiting groove 65 is opened at both the upper and lower ends of the transparent rotating tube 61. The cavity 62 is opened on the outer shell 1. The limiting rod 63 is slidably connected to the cavity 62. The front end of the limiting rod 63 is spherical and can be embedded in the limiting groove 65 under the action of the second spring 64, so that the transparent rotating tube 61 is fixed in the state of opening upward or downward. The transparent rotating tube 61 is made of transparent material. When fluorinated liquid 51 is added, the liquid level of fluorinated liquid 51 in the outer shell 1 will be consistent with the liquid level of fluorinated liquid 51 in the transparent rotating tube 61, so it is easy to observe. The top end of the limiting rod 63 is spherical, and the interior of the limiting groove 65 is adapted to the limiting rod 63.

[0033] In this embodiment, the buffer assembly 4 also includes a support rod 41 and a top plate 42. The support rod 41 is disposed on the outer shell 1, and the top plate 42 is connected to the top of the support rod 41. When the slide cylinder 43 is impacted, its top end will slide relative to the bottom of the top plate 42, and the bottom end of the slide cylinder 43 will slide inside the outer shell 1. Therefore, all three need to use smooth materials to reduce friction during relative movement.

[0034] In this embodiment, multiple through holes 55 are provided and are evenly distributed on the cylinder wall of the slide cylinder 43. After the fluorinated liquid 51 is poured into the outer shell 1 through the transparent rotating tube 61, it will enter the slide cylinder 43 through the through holes 55, so that the inside and outside of the slide cylinder 43 are filled with fluorinated liquid 51.

[0035] In this embodiment, multiple slide rods 45 are provided, and the multiple slide rods 45 are evenly distributed along the circumference of the slide cylinder 43. This is to cope with the situation where the slide cylinder 43 may be impacted from any direction.

[0036] In this embodiment, the discharge assembly 6 also includes a pipe plug, which is detachably fitted with the opening of the transparent rotating tube 61, and the pipe plug and the opening of the transparent rotating tube 61 can be sealed.

[0037] In this embodiment, the rubber telescopic cylinder 53 is a flexible sealing structure that can expand and contract with the movement of the fixing ring 52. The rubber telescopic cylinder 53 does not react with the fluorinated liquid 51. Since the slide cylinder 43 will move when it is impacted, the deformability of the rubber telescopic cylinder 53 can ensure that the rubber telescopic cylinder 53 can be pulled along with the slide cylinder 43 without being damaged when the slide cylinder 43 moves.

[0038] The specific working method is as follows: First, rotate the transparent rotating tube 61 until the opening faces upward, open the tube plug, and pour the fluorinated liquid 51 into the transparent rotating tube 61. At this time, the fluorinated liquid 51 will enter the outer shell 1 and flow into the interior of the slide cylinder 43 through the multiple through holes 55 on the slide cylinder 43. Since the height of the transparent rotating tube 61 is lower than the height of the placement seat 3, the amount of fluorinated liquid 51 poured in can be observed through the transparent rotating tube 61, and it can be ensured that the fluorinated liquid 51 will not submerge the placement seat 3. The placement seat 3 is used to place the energy storage battery pack. The energy storage battery pack is placed in the placement seat 3 and located inside the slide cylinder 43. The fluorinated liquid 51 around it can... The heat released by the energy storage battery pack is absorbed to achieve a heat dissipation effect. Even if a small amount of fluorinated liquid 51 evaporates, since fluorinated liquid 51 is different from water, it will not cause damage to the battery pack when it comes into contact with the battery pack. Therefore, there is no need to worry about the energy storage battery pack in the placement base 3 being damaged after contacting the fluorinated liquid 51. When the energy storage battery pack generates a lot of heat, the semiconductor cooler 54 located on the slide cylinder 43 can be activated at the same time to directly dissipate heat from the slide cylinder 43. At this time, the fluorinated liquid 51 in contact with the slide cylinder 43 will be cooled down, and the slide cylinder 43 will also absorb the heat inside the slide cylinder 43 due to its own temperature reduction, thereby further dissipating heat from the energy storage battery pack in the placement base 3.

[0039] In addition, the slide cylinder 43 can provide physical protection for the energy storage battery pack placed on the base 3 inside. When the slide cylinder 43 is impacted, it will move to a certain extent. However, since the inner wall of the slide cylinder 43 is in contact with each slide rod 45, and each slide rod 45 slides in the slide groove 44 on the base 2, and each slide rod 45 is connected to a first spring 46, the slide rod 45 will buffer the slide cylinder 43 when it is impacted. Since there is fluorinated liquid 51 inside the outer shell 1, the bottom end of the slide cylinder 43 is immersed in the fluorinated liquid 51. Therefore, when the slide cylinder 43 moves, the fluorinated liquid 51 will also buffer it. Since a fixing ring 52 is fixedly installed on the outside of the slide cylinder 43, and a rubber telescopic cylinder 53 is connected between the fixing ring 52 and the inner wall of the outer shell 1, even if the slide cylinder 43 moves along with the fixing ring 52, the fluorinated liquid 51 will always be inside the rubber telescopic cylinder 53. Therefore, the fluorinated liquid 51 will never be exposed to the air and will not be contaminated.

[0040] Therefore, the fluorinated liquid 51 can work with the semiconductor cooler 54 to dissipate heat from the energy storage battery pack in the placement seat 3, and the fluorinated liquid 51 can also work with the slide rod 45 connected to the first spring 46 to buffer the movement and impact of the slide cylinder 43, so that the energy storage battery pack can be well protected after being placed in the placement seat 3.

[0041] The fluorinated liquid 51 can be used for a long time without replacement. However, when the outside temperature is low, in order to ensure the normal operation of the battery pack, a certain amount of fluorinated liquid 51 can be discharged to appropriately raise the temperature of the energy storage battery pack. At this time, it is only necessary to rotate the transparent tube 61 to the point where the opening faces downward. Then, most of the fluorinated liquid 51 inside the outer casing 1 can be discharged and collected directly through the transparent tube 61, leaving only a small amount of fluorinated liquid 51 inside the outer casing 1. When rotating the transparent tube 61, the two limiting grooves 65 at its upper and lower ends can be used for the limiting rod 63 to be inserted, so that the transparent tube 61 can be fixed when rotated to the point where the opening faces upward or downward. The front end of the limiting rod 63 is spherical. Under the action of the second spring 64, it will automatically be inserted into the limiting groove 65 during the rotation of the transparent tube 61.

[0042] The technical means disclosed in this invention are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this invention are common knowledge to those skilled in the art.

Claims

1. An integrated mechanical buffer and heat dissipation structure for energy storage battery packs in a multi-energy complementary system, characterized in that: The device includes a housing (1), a base (2), a placement seat (3), a buffer assembly (4), a heat dissipation assembly (5), and a discharge assembly (6). The base (2) is located at the bottom of the housing (1), and the placement seat (3) is used to place the energy storage battery pack, and the placement seat (3) is fixedly connected to the base (2). The buffer assembly (4) includes a slide cylinder (43), a slide groove (44), a slide rod (45), and a first spring (46). The slide groove (44) is opened on the base (2), and the slide rod (45) slides within the slide groove (44), and the slide rod (45) contacts the inner wall of the slide cylinder (43). The first spring (6) 46) Connected to the slide rod (45); the heat dissipation assembly (5) includes fluorinated liquid (51), fixing ring (52), rubber telescopic cylinder (53), semiconductor cooler (54) and through hole (55). The through hole (55) is opened on the slide cylinder (43). The semiconductor cooler (54) is installed on the slide cylinder (43). The fixing ring (52) is fixed on the outside of the slide cylinder (43). The rubber telescopic cylinder (53) is connected between the fixing ring (52) and the inner wall of the outer shell (1). The fluorinated liquid (51) is located in the area enclosed by the rubber telescopic cylinder (53), and the bottom end of the slide cylinder (43) is immersed in the fluorinated liquid (51).

2. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: The emission assembly (6) includes a transparent rotating tube (61), a cavity (62), a limiting rod (63), a second spring (64), and a limiting groove (65). The transparent rotating tube (61) is connected to the interior of the outer shell (1). The limiting groove (65) is opened at both ends of the transparent rotating tube (61). The cavity (62) is opened on the outer shell (1). The limiting rod (63) is slidably connected in the cavity (62). The front end of the limiting rod (63) is spherical and can be embedded in the limiting groove (65) under the action of the second spring (64), so that the transparent rotating tube (61) is fixed in the state of opening upward or downward.

3. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: The buffer assembly (4) also includes a support rod (41) and a top plate (42). The support rod (41) is disposed on the outer shell (1), and the top plate (42) is connected to the top of the support rod (41).

4. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: Multiple through holes (55) are provided and are evenly distributed on the cylinder wall of the slide (43).

5. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: Multiple slide rods (45) are provided, and the multiple slide rods (45) are evenly distributed along the circumference of the slide cylinder (43).

6. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: The emission assembly (6) also includes a plug that is detachably engaged with the opening of the transparent rotating tube (61).

7. The integrated mechanical buffering and heat dissipation structure of the energy storage battery pack in the multi-energy complementary system according to claim 1, characterized in that: The rubber telescopic cylinder (53) is a flexible sealing structure that can expand and contract with the movement of the fixed ring (52), and the rubber telescopic cylinder (53) does not react with the fluorinated liquid (51).

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