A high flame retardant packaging structure

Abstract

This utility model discloses a highly flame-retardant packaging structure, belonging to the field of new energy battery technology. It includes a base plate, a protective frame at the top of the base plate, an inner liner inside the protective frame, and multiple partitions arranged in a linear array inside the inner liner. A top cover is located above the inner liner, and a baffle is fixedly installed on the top of the top cover. A fixing component is provided between the top cover and the protective frame. The inner liner includes a reinforcing layer, a heat insulation layer inside the reinforcing layer, and a flame-retardant layer inside the heat insulation layer. The protective frame outside the inner liner protects it and improves its robustness. The inner liner, composed of a reinforcing layer, a heat insulation layer, and a flame-retardant layer, provides heat insulation and flame retardancy. Multiple partitions divide the inner liner into multiple storage compartments, facilitating batch placement of battery packs. The partitions are made of existing flame-retardant materials, effectively preventing the spread of flames and high temperatures to adjacent units in the event of thermal runaway in one cell.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and more specifically, to a highly flame-retardant packaging structure. Background Technology

[0002] Electric vehicle batteries are chemical energy storage devices that provide driving power for electric vehicles. They are divided into two categories: rechargeable batteries and fuel cells. Rechargeable batteries store electrical energy through reversible electrochemical reactions. The entire system consists of multiple battery packs and corresponding management systems, high-voltage circuits, low-voltage circuits, and mechanical assemblies. Types include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. At present, new energy batteries are widely used. The main advantages of new energy batteries include high energy density, fast charging, long life, and strong low-temperature resistance. After manufacturing, new energy batteries can be placed in turnover boxes for easy storage and transportation.

[0003] Some existing turnover boxes for new energy batteries lack flame-retardant structures inside. When new energy batteries are placed inside these boxes for extended periods, they may be at risk of thermal runaway or even fire and explosion due to impacts, compression, short circuits, or overheating, thus reducing the safety of the equipment. To address this, we propose a highly flame-retardant packaging structure. Utility Model Content

[0004] To solve the above problems, this utility model provides a highly flame-retardant packaging structure, adopting the following technical solution: A highly flame-retardant packaging structure includes a base plate, a protective frame at the top of the base plate, an inner liner inside the protective frame, multiple partitions arranged in a linear array inside the inner liner, a top cover above the inner liner, a baffle fixedly installed on the top of the top cover, and a fixing component between the top cover and the protective frame. The inner lining includes a reinforcing layer, an insulation layer inside the reinforcing layer, and a flame-retardant layer inside the insulation layer.

[0005] By adopting the above technical solution, when the equipment is in use, the inner lining layer is divided into multiple placement compartments by multiple partitions, which facilitates the batch placement of battery packs. The partitions are made of existing flame-retardant materials. When a unit experiences thermal runaway, the partitions can effectively prevent the spread of flames and high temperatures to adjacent units, achieving a flame-retardant effect. After the battery packs are placed, the staff places the top cover on top of the protective frame and fits it against the top of the protective frame. Then, the top cover and the protective frame are fixed by the fixing components, which can seal the equipment. The inner lining layer consists of a reinforcement layer, a heat insulation layer, and a flame-retardant layer. The flame-retardant layer can block the spread of fire, and the heat insulation layer can insulate against temperature. The inner wall of the inner lining layer and the bottom of the top cover are coated with a halogen-free intumescent flame-retardant modified polypropylene coating. When exposed to a fire source, the halogen-free intumescent flame-retardant modified polypropylene coating quickly forms a dense and hard carbonized foam layer. The foam layer can effectively isolate oxygen and block the heat source, helping to prevent the fire from dripping and spreading.

[0006] Furthermore, the fixing component includes mounting blocks rotatably mounted on both sides of the top cover. Each of the two mounting blocks has a movable groove on its opposite side, and a fixing block is slidably mounted in each of the two movable grooves. Each of the two fixing blocks has a slide rod fixedly mounted on its opposite side. Each of the slide rods has a spring sleeved on its side wall. The opposite ends of the two slide rods slide through the mounting blocks on the same side, and each of the opposite ends of the two slide rods has a handle fixedly mounted on its opposite side.

[0007] By adopting the above technical solution, after the top cover and the top of the protective frame are attached, the worker pulls the sliding rod by the handle, which moves the sliding rod along with the fixing block on the same side into the movable groove. The fixing block compresses the spring on the same side and retracts. After the fixing block moves into the movable groove, the worker rotates the mounting block so that the mounting block is perpendicular to the top cover. Then the worker releases the handle, and the fixing block moves out of the movable groove under the elastic force of the spring on the same side, thus moving the fixing block to the bottom of the upper section of the protective frame. The attachment of the fixing block and part of the protective frame helps to restrict and fix the top cover, which is beneficial to maintaining the stability of the attachment between the top cover and the inner lining layer.

[0008] Furthermore, both sides of the two mounting blocks are provided with sliding grooves, and the two sliding grooves on the same side are connected to the movable groove on the same side. Sliding blocks are slidably installed in the sliding grooves, and the two sliding blocks on the same side are fixedly connected to the opposite side of the fixed block on the same side.

[0009] By adopting the above technical solution, when the fixed block slides in the movable groove, the fixed block, along with the slider, slides in the same side groove. The cooperation between the slider and the groove helps to maintain the stability of the fixed block's movement and can also limit the positioning of the fixed block, thus helping to prevent the fixed block from leaving the movable groove.

[0010] Furthermore, multiple through holes arranged in a linear array are provided on both sides of the inner lining, and flame-retardant cotton is provided in each through hole. Multiple one-way pressure relief valves arranged in a linear array are provided on the top of the top cover.

[0011] By adopting the above technical solution, the sidewall of the inner lining layer is designed with through holes to facilitate the flow of air inside the inner lining layer, thereby achieving the effect of heat dissipation. In addition, flame-retardant cotton is installed inside each through hole, which can reduce the spread of fire and help prevent fire from spraying out of the through holes. Furthermore, a one-way pressure relief valve is provided on the top of the cover to release pressure.

[0012] Furthermore, positioning rods are provided at the four corners of the bottom of the top cover, and positioning grooves matching the positioning rods are provided at the top of the protective frame.

[0013] By adopting the above technical solution, a positioning rod is provided at the bottom of the top cover. The positioning rod engages with the positioning groove opened at the top of the protective frame to play a positioning role, which facilitates the precise fitting of the top cover and the inner lining layer.

[0014] Furthermore, the inner lining layer has inserts at the four corners of the bottom, and the bottom plate has slots at the top that match the inserts. The insulation layer is filled with rock wool, and the flame retardant layer is filled with halogen-free environmentally friendly flame retardant.

[0015] By adopting the above technical solution, the inner lining and the protective frame are fixed together with fasteners of existing technology. When installing the inner lining, the worker places the inner lining inside the protective frame, so that the insert at the bottom of the inner lining engages with the slot opened at the top of the base plate, which plays a positioning role and facilitates subsequent fixing. The inner lining, protective frame and base plate are set separately, which is convenient for disassembly, cleaning or maintenance. The heat insulation layer is filled with rock wool, and the flame retardant layer is filled with halogen-free environmentally friendly flame retardant, such as intumescent flame retardant, which helps to improve the heat insulation and flame retardant effect of the equipment.

[0016] Furthermore, the bottom of the protective frame is provided with multiple symmetrically distributed clamping plates, and the side wall of the bottom plate is provided with clamping slots that match the clamping plates. The clamping plates and the clamping slots are fixed together by bolts.

[0017] By adopting the above technical solution, the bottom of the protective frame is equipped with a locking plate. The locking plate and the slot opened on the side wall of the bottom plate engage to position the protective frame and facilitate subsequent fixing with bolts.

[0018] In summary, this utility model has the following beneficial technical effects: (1) In this utility model, a protective frame is provided on the outside of the inner liner, which can protect the inner liner and improve the strength of the inner liner. The inner liner is composed of a reinforcing layer, a heat insulation layer and a flame retardant layer, which can achieve the effect of heat insulation and flame retardancy. The inner liner is divided into multiple storage compartments by multiple partitions, which facilitates the batch placement of battery packs. The partitions are made of flame retardant materials of the prior art. When a unit experiences thermal runaway, the partitions can effectively prevent the flame and high temperature from spreading to adjacent units, thus playing a flame retardant role.

[0019] (2) In this utility model, the inner lining sidewall is provided with through holes to facilitate air flow and achieve heat dissipation. The top cover is provided with multiple one-way pressure relief valves. When one of the battery groups experiences thermal runaway, the one-way pressure relief valve can safely guide the pressure and ejected material in a specific direction, which helps to prevent the box from bursting and the side spray from igniting other items, thus improving the safety of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the high flame-retardant packaging structure of this utility model; Figure 2 This is a cross-sectional view of the mounting block in the high flame-retardant packaging structure of this utility model; Figure 3 This utility model relates to a high flame-retardant packaging structure. Figure 2 Enlarged view of A in the middle; Figure 4 This is a top sectional view of the inner lining layer in the high flame retardant packaging structure of this utility model; Figure 5 This is an unfolded view of the protective frame and base plate in the high flame-retardant packaging structure of this utility model.

[0021] Explanation of the labels in the diagram: 1. Base plate; 2. Protective frame; 3. Inner lining layer; 31. Reinforcing layer; 32. Heat insulation layer; 33. Flame retardant layer; 4. Partition plate; 5. Top cover; 6. Baffle; 7. One-way pressure relief valve; 8. Mounting block; 9. Fixing block; 10. Clamping plate; 11. Movable groove; 12. Spring; 13. Slide rod; 14. Insert block; 15. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0026] Please see Figure 1-5 A highly flame-retardant packaging structure includes a base plate 1, a protective frame 2 at the top of the base plate 1, an inner lining layer 3 inside the protective frame 2, multiple partitions 4 arranged in a linear array inside the inner lining layer 3, a top cover 5 above the inner lining layer 3, a baffle 6 fixedly installed on the top of the top cover 5, and a fixing assembly between the top cover 5 and the protective frame 2. The fixing assembly includes mounting blocks 8 rotatably mounted on both sides of the top cover 5. Each of the two mounting blocks 8 has a movable groove 11 on its opposite side, and a fixing block 9 is slidably installed in each of the two movable grooves 11. Each of the two fixing blocks 9 has a sliding rod 13 fixedly installed on its opposite side, and a spring 12 is sleeved on the side wall of each of the two sliding rods 13. The opposite ends of the two sliding rods 13 slide through the mounting blocks 8 on the same side, and a handle is fixedly installed on the opposite ends of the two sliding rods 13.

[0027] During equipment use, the inner liner 3 is divided into multiple storage compartments by multiple partitions 4, facilitating the batch placement of battery packs. The partitions 4 are made of existing flame-retardant materials, effectively preventing the spread of flames and high temperatures to adjacent units in the event of thermal runaway in one unit, thus achieving a flame-retardant effect. After the battery packs are placed, the operator places the top cover 5 above the protective frame 2, ensuring it is flush with the top of the frame. The operator then pulls the sliding rod 13, causing the sliding rod 13 to move along with the fixing block 9 on the same side. The movable groove 11 moves inside, and the fixing block 9 compresses the spring 12 on the same side to retract. After the fixing block 9 moves into the movable groove 11, the operator rotates the mounting block 8 so that the mounting block 8 is perpendicular to the top cover 5. Then the operator releases the handle, and the fixing block 9 moves out of the movable groove 11 under the elastic force of the spring 12 on the same side, thereby moving the fixing block 9 to the bottom of the upper section of the protective frame 2. Through the contact between the fixing block 9 and part of the protective frame 2, the top cover 5 is fixed, which helps to maintain the stability of the contact between the top cover 5 and the inner lining layer 3.

[0028] Both mounting blocks 8 have sliding grooves on both sides. The two sliding grooves on the same side are connected to the movable groove 11 on the same side. A slider is slidably installed in each sliding groove. The two sliders on the same side are fixedly connected to the opposite side of the fixed block 9 on the same side. When the fixed block 9 slides in the movable groove 11, the fixed block 9 slides in the sliding groove on the same side with the slider. The cooperation between the slider and the sliding groove helps to maintain the stability of the movement of the fixed block 9 and can also limit the positioning of the fixed block 9, which helps to prevent the fixed block 9 from falling out of the movable groove 11.

[0029] The inner lining layer 3 includes a reinforcing layer 31, an insulation layer 32 inside the reinforcing layer 31, and a flame-retardant layer 33 inside the insulation layer 32. Insert blocks 14 are provided at the four corners of the bottom of the inner lining layer 3. A slot matching the insert blocks 14 is provided at the top of the bottom plate 1. The insulation layer 32 is filled with rock wool, and the flame-retardant layer 33 is filled with a halogen-free environmentally friendly flame retardant. The inner lining layer 3 consists of the reinforcing layer 31, the insulation layer 32, and the flame-retardant layer 33. The flame-retardant layer 33 can prevent the spread of fire, and the insulation layer 32 can insulate against temperature. The inner wall of the inner lining layer 3 and the bottom of the top cover 5 are coated with a halogen-free intumescent flame-retardant modified polypropylene coating. When exposed to a fire source, the halogen-free intumescent flame-retardant modified polypropylene coating quickly forms a dense and hard carbonized foam layer. The foam layer effectively isolates oxygen and blocks heat sources, helping to prevent the fire from dripping and spreading.

[0030] The inner lining layer 3 and the protective frame 2 are fixed together by fasteners using existing technology. When installing the inner lining layer 3, the worker places the inner lining layer 3 inside the protective frame 2, so that the insert block 14 installed at the bottom of the inner lining layer 3 engages with the slot opened at the top of the base plate 1, which serves as a positioning function and facilitates subsequent fixing. The inner lining layer 3, the protective frame 2 and the base plate 1 are set separately, which facilitates disassembly, cleaning or maintenance. The heat insulation layer 32 is filled with rock wool, and the flame retardant layer 33 is filled with halogen-free environmentally friendly flame retardant, such as an intumescent flame retardant, which helps to improve the heat insulation and flame retardant effect of the equipment.

[0031] The inner lining layer 3 has multiple through holes arranged in a linear array on both sides, and flame-retardant cotton is installed in each through hole. The top cover 5 has multiple one-way pressure relief valves 7 arranged in a linear array. The through holes on the side wall of the inner lining layer 3 facilitate air circulation inside the inner lining layer 3, achieving the effect of heat dissipation. The flame-retardant cotton installed inside each through hole can reduce the spread of fire and help prevent fire from spraying out of the through hole. The one-way pressure relief valves 7 on the top cover 5 can release pressure.

[0032] The top cover 5 has positioning rods at all four corners at the bottom. The top of the protective frame 2 has a positioning groove that matches the positioning rods. The bottom of the top cover 5 has a positioning rod. The positioning rods and the positioning grooves on the top of the protective frame 2 engage to achieve positioning, making it easy for the top cover 5 and the inner lining layer 3 to fit precisely.

[0033] The bottom of the protective frame 2 is provided with multiple symmetrically distributed clamping plates 10. The side wall of the base plate 1 is provided with a clamping groove 15 that matches the clamping plate 10. The clamping plate 10 and the clamping groove 15 are fixed together by bolts. The bottom of the protective frame 2 is provided with clamping plates 10. The clamping plates 10 and the clamping groove 15 on the side wall of the base plate 1 are engaged to position the protective frame 2, which is convenient for subsequent fixing with bolts.

[0034] The implementation principle of this utility model embodiment is as follows: When the equipment is in use, the inner lining layer 3 is divided into multiple placement compartments by multiple partitions 4, which facilitates the batch placement of battery packs. The partitions 4 are made of flame-retardant materials of the prior art. When a unit experiences thermal runaway, the partitions 4 can effectively prevent the flame and high temperature from spreading to adjacent units, achieving a flame-retardant effect. After the battery packs are placed, the operator places the top cover 5 on top of the protective frame 2 and attaches it to the top of the protective frame 2. Then, the top cover 5 and the protective frame are fixed together by the fixing components. 2. Fixing can serve as a sealing function for the equipment. The inner lining layer 3 is composed of a reinforcing layer 31, a heat insulation layer 32, and a flame retardant layer 33. The flame retardant layer 33 can prevent the spread of fire, and the heat insulation layer 32 can insulate against temperature. The inner wall of the inner lining layer 3 and the bottom of the top cover 5 are coated with a halogen-free intumescent flame retardant modified polypropylene coating. When it encounters a fire source, the halogen-free intumescent flame retardant modified polypropylene coating quickly forms a dense and hard carbonized foam layer. The foam layer can effectively isolate oxygen and block heat sources, helping to prevent the fire from dripping and spreading.

[0035] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A highly flame-retardant packaging structure, characterized in that: Includes a base plate (1), a protective frame (2) is provided at the top of the base plate (1), an inner lining layer (3) is provided inside the protective frame (2), a plurality of partitions (4) arranged in a linear array are provided inside the inner lining layer (3), a top cover (5) is provided above the inner lining layer (3), a baffle (6) is fixedly installed on the top of the top cover (5), and a fixing component is provided between the top cover (5) and the protective frame (2); The inner lining (3) includes a reinforcing layer (31), an insulation layer (32) is provided on the inner side of the reinforcing layer (31), and a flame-retardant layer (33) is provided on the inner side of the insulation layer (32).

2. The high flame-retardant packaging structure according to claim 1, characterized in that: The fixing assembly includes mounting blocks (8) rotatably mounted on both sides of the top cover (5). Each of the two mounting blocks (8) has a movable groove (11) on one side opposite to the other. Each of the two movable grooves (11) has a fixed block (9) slidably mounted in one of the two movable grooves (11). Each of the two fixed blocks (9) has a slide rod (13) fixedly mounted on the opposite side. Each of the two slide rods (13) has a spring (12) sleeved on its sidewall. Each of the two slide rods (13) has a handle fixedly mounted on the opposite side of the mounting block (8) on the same side.

3. The high flame-retardant packaging structure according to claim 2, characterized in that: Both mounting blocks (8) have sliding grooves on both sides. Both sliding grooves on the same side are connected to the movable groove (11) on the same side. Sliding blocks are slidably installed in each sliding groove. Both sliding blocks on the same side are fixedly connected to the side opposite to the fixed block (9) on the same side.

4. The high flame-retardant packaging structure according to claim 1, characterized in that: The inner lining (3) has multiple through holes arranged in a linear array on both sides, and flame-retardant cotton is provided in each of the through holes. The top cover (5) has multiple one-way pressure relief valves (7) arranged in a linear array at its top.

5. The high flame-retardant packaging structure according to claim 1, characterized in that: The top cover (5) has positioning rods at the four corners of its bottom end, and the top of the protective frame (2) has a positioning groove that matches the positioning rods.

6. The high flame-retardant packaging structure according to claim 1, characterized in that: The inner lining layer (3) has four corners with inserts (14), and the bottom plate (1) has a slot at the top that matches the inserts (14). The heat insulation layer (32) is filled with rock wool, and the flame retardant layer (33) is filled with halogen-free environmentally friendly flame retardant.

7. The high flame-retardant packaging structure according to claim 1, characterized in that: The bottom of the protective frame (2) is provided with a plurality of symmetrically distributed card plates (10), and the side wall of the base plate (1) is provided with card slots (15) that match the card plates (10). The card plates (10) and the card slots (15) are fixed together by bolts.

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