New energy battery pack safety protection device

Abstract

The utility model discloses a new energy battery pack safety protection device, and belongs to the field of new energy battery pack safety protection. A plurality of through grooves are formed in the periphery of the storage box, a buffer groove is formed in the side, close to the middle of the storage box, of each through groove, an elastic diaphragm fixedly connected with the storage box is arranged between each buffer groove and the corresponding through groove, a ball is arranged in the middle of each through groove, a plurality of springs are fixedly connected to the periphery of each ball, and one ends of the springs are fixedly connected with the through grooves. Piston holes are formed in the two sides of the thickness of the through groove, one end of each piston hole is in sealed connection with the buffer groove, the other end of each piston hole is in sliding connection with a piston rod, and the other end of each piston rod is fixedly connected with the plane end of the corresponding hemisphere. A plurality of groups of protection devices are arranged at the periphery of the storage box, so that the impact of external force on the battery pack can be effectively prevented, and the safety of the battery is improved.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection for new energy battery packs, and more specifically, it relates to a safety protection device for new energy battery packs. Background Technology

[0002] In recent years, with the rapid development of new energy vehicles and energy storage systems, the safety and reliability of new energy battery packs (such as lithium iron phosphate batteries and ternary lithium batteries) have become a core power source, attracting significant attention. Battery packs may be subjected to external impacts, vibrations, or compression during charging, discharging, transportation, or use, especially lateral impacts, which can damage the internal structure of the battery and even lead to serious safety accidents such as thermal runaway, fire, or explosion. Therefore, effectively improving the impact resistance and buffering capacity of battery packs has become one of the key issues that urgently need to be addressed in the field of new energy battery technology.

[0003] Currently, common battery pack protection devices in existing technologies mostly use a rigid shell combined with simple elastic materials (such as foam, rubber pads, etc.) to achieve cushioning. However, this structure is difficult to evenly distribute stress when subjected to multi-directional impacts, which may lead to local stress concentration, reducing the protective effect. Furthermore, it lacks the ability to dynamically adjust the internal pressure of the battery pack, further limiting the improvement of its safety performance. To address the above technical problems, this application proposes a solution. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a safety protection device for a new energy battery pack. The device has multiple sets of protective devices around the storage box, which can effectively prevent external forces from impacting the battery pack and improve the safety of the battery.

[0005] A safety protection device for a new energy battery pack includes a storage box with multiple through slots around its perimeter. Each through slot has a buffer slot on its side near the center of the storage box. An elastic diaphragm, fixedly connected to the storage box, is provided between the buffer slot and the through slot. A sphere is located in the center of the through slot, and multiple springs are fixedly connected around the sphere. One end of each spring is fixedly connected to the through slot. A sliding rod is fixedly connected to the side of the sphere away from the storage box. A hemisphere is fixedly connected to one end of the sliding rod and is located on the outside of the storage box. Piston holes are provided on both sides of the through slot. One end of each piston hole is sealed to the buffer slot, and a piston rod is slidably connected to the other end of the piston hole. The other end of the piston rod is fixedly connected to the flat end of the hemisphere.

[0006] Preferably, the through groove is an arc-shaped cavity.

[0007] Preferably, one end of the hemispherical arc surface faces outward.

[0008] Preferably, the two ends of the sliding rod are connected to the center of the sphere and the center of the hemisphere, respectively, and the diameter of the hemisphere is the same as the thickness of the storage box. The main body of the hemisphere is made of rubber.

[0009] Preferably, the storage box has a cavity in the middle for placing the battery.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention incorporates multiple sets of springs. When an impact occurs, the springs can absorb and disperse the impact force, preventing excessive impact from directly crushing the storage box and squeezing the battery pack. Furthermore, the springs are positioned away from the battery pack, ensuring that the impact force on the other end of the spring does not target the battery pack. This prevents excessive impact from squeezing the battery pack and damaging the battery, thus improving the overall safety of the battery pack. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the specific structure of part A.

[0014] In the diagram, 1 is the storage box; 2 is the buffer groove; 3 is the sliding rod; 4 is the spring; 5 is the elastic diaphragm; 6 is the through groove; 7 is the hemisphere; 8 is the piston rod; 9 is the sphere; and 10 is the piston hole. Detailed Implementation

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

[0016] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] like Figures 1 to 2As shown, a safety protection device for a new energy battery pack includes a storage box 1, which is used to store and protect the battery. Multiple through slots 6 are formed around the storage box 1, and each through slot 6 is an arc-shaped cavity. A buffer groove 2 is formed on the side of each through slot 6 closest to the center of the storage box 1. An elastic diaphragm 5, fixedly connected to the storage box 1, seals the buffer groove 2 between the buffer groove 2 and the through slot 6. A sphere 9 is located in the center of each through slot 6, suspended within the slot. Multiple springs 4 are fixedly connected around the sphere 9, with one end of each spring 4 fixedly connected to the through slot 6. A sliding rod 3 is fixedly connected to the side of the sphere 9 away from the storage box 1, with one end of the sliding rod 3 fixedly connected to a hemisphere 7 located on the outer side of the storage box 1. Piston holes 10 are formed on both sides of the through slot 6, with one end of the piston hole 10 sealed to the buffer groove 2 and the other end of the piston hole 10 slidably connected to a piston rod 8. The other end of the piston rod 8 is fixedly connected to the flat end of the hemisphere 7.

[0018] One end of the curved surface of hemisphere 7 faces outward. The two ends of the sliding rod 3 are connected to the center of sphere 9 and hemisphere 7 respectively, and the diameter of hemisphere 7 is the same as the thickness of storage box 1. The main body of hemisphere 7 is made of rubber. Storage box 1 has a cavity in the middle for placing batteries.

[0019] Working principle: The storage box 1 is installed on the car chassis frame. When the vehicle is impacted from the side, the first contact hemisphere 7 will absorb energy and contract into the storage box 1. The force on the hemisphere 7 is transmitted to the ball 9 through the slide rod 3. The piston rods 8 on both sides of the hemisphere 7 move inward along the piston hole 10. The air in the piston hole 10 moves into the buffer groove 2, causing the elastic diaphragm 5 to expand and squeeze the ball 9. The force received by the ball 9 is transmitted to the surrounding spring 4, and finally to the through groove 6. The impact force is weakened after vibration, preventing the external force from being further transmitted into the storage box 1, squeezing the battery, and causing danger.

[0020] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety protection device for a new energy battery pack, comprising a storage box (1), characterized in that: The storage box (1) has multiple through slots (6) around its perimeter. Each through slot (6) has a buffer slot (2) on the side closest to the middle of the storage box (1). An elastic diaphragm (5) is fixedly connected to the storage box (1) between the buffer slot (2) and the through slot (6). A sphere (9) is located in the middle of the through slot (6). Multiple springs (4) are fixedly connected around the sphere (9). One end of each spring (4) is fixedly connected to the through slot (6). A sliding rod (3) is fixedly connected to the side of the sphere (9) away from the storage box (1). A hemisphere (7) is fixedly connected to one end of the sliding rod (3). The hemisphere (7) is located on the outside of the storage box (1). Piston holes (10) are opened on both sides of the through slot (6). One end of the piston hole (10) is sealed to the buffer slot (2). A piston rod (8) is slidably connected to the other end of the piston hole (10). The other end of the piston rod (8) is fixedly connected to the flat end of the hemisphere (7).

2. The safety protection device for a new energy battery pack according to claim 1, characterized in that: The through groove (6) is an arc-shaped cavity.

3. The safety protection device for a new energy battery pack according to claim 1, characterized in that: One end of the arc surface of the hemisphere (7) faces outward.

4. The safety protection device for a new energy battery pack according to claim 1, characterized in that: The two ends of the slide rod (3) are connected to the center of the sphere (9) and the hemisphere (7) respectively, and the diameter of the hemisphere (7) is the same as the thickness of the storage box (1). The main body of the hemisphere (7) is made of rubber.

5. A safety protection device for a new energy battery pack according to claim 1, characterized in that: The storage box (1) has a cavity in the middle for placing batteries.

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