Explosion-proof safety lithium battery pack

Abstract

The utility model relates to the field of lithium battery pack discloses a kind of explosion-proof safety type lithium battery pack, including bottom plate, the bottom plate top is fixedly connected with multiple receiving boxes, each receiving box top is provided with sealing assembly, each receiving box inside is slidably connected with lithium battery, each lithium battery outer wall is provided with multiple fixed slots, each receiving box inside is provided with multiple fixed components, each fixed component includes multiple telescopic rod, fixed plate and multiple spring one, each telescopic rod one end is fixedly connected in receiving box inner wall.In the utility model, first lithium battery is placed into receiving box inside, when lithium battery reaches the deepest place of receiving box, fixed strip pops out and slides into fixed slot, so as to reach the effect that lithium battery can be fixed in receiving box inside, avoid the problem that lithium battery appears to shake and leads to power supply efficiency decline, so as to improve the practicality of explosion-proof safety type lithium battery pack.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery packs, and in particular to an explosion-proof and safe lithium battery pack. Background Technology

[0002] Lithium-ion battery packs are power systems composed of multiple lithium-ion batteries connected in series, providing specific voltage, capacity, and power output for new energy vehicles, energy storage devices, and other applications. Because lithium-ion batteries are prone to thermal runaway under abnormal conditions such as overcharging and short circuits, leading to fires and explosions, and because electrolyte leaks are flammable and decomposition gases are explosive, explosion-proof safety lithium-ion battery packs are required. These packs utilize explosion-proof casings, pressure relief valves, and other structural designs to release pressure promptly, employ flame-retardant materials to suppress flames, and are equipped with a battery management system that monitors parameters in real time and cuts off power in case of abnormalities. Furthermore, they exhibit strong environmental adaptability and can withstand risks in high-risk scenarios, ensuring the safe operation of lithium-ion battery packs under complex working conditions from multiple perspectives.

[0003] Existing explosion-proof lithium battery packs primarily ensure safety through multiple technologies working together. Structurally, a high-strength flame-retardant explosion-proof shell and pressure relief valve prevent the spread of flames and release internal pressure. The battery management system monitors parameters such as voltage, current, and temperature in real time, and immediately cuts off the circuit when abnormalities such as overcharging or over-discharging are detected to prevent thermal runaway. Thermal management technology dissipates heat in a timely manner through heat sinks and liquid cooling pipes to maintain a suitable operating temperature. At the same time, the insulation and isolation design avoids short circuits, and gas sensors monitor the concentration of flammable gases in the environment and issue timely alarms. Multiple lines of defense work together to achieve explosion-proof safety.

[0004] However, the problem of reduced power supply efficiency caused by battery shaking during the use of explosion-proof safety lithium battery packs has not been effectively solved. Although most battery packs are equipped with basic fixed structures, they are difficult to cope with high-frequency vibrations or displacements during equipment operation. Either the fixing frame uses rigid connections, and in bumpy environments, the lack of buffering between the battery cells and the shell causes violent collisions, resulting in loosening of internal electrode connection pieces and increased contact resistance, or the shock-absorbing pad material ages and loses elasticity, failing to offset the inertial impact when the equipment moves, which in turn causes cell misalignment and broken circuit solder joints. For example, during the driving of new energy vehicles, road bumps will cause the battery pack to shake continuously, which may cause voltage output fluctuations and reduced power supply stability, or even cause poor internal circuit contact and even short circuit risk. Staff need to frequently disassemble, inspect and tighten the equipment, which not only consumes time, but also affects the normal operation of the equipment due to power supply efficiency fluctuations, thus greatly reducing the efficiency of explosion-proof lithium battery packs in dynamic scenarios. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an explosion-proof and safe lithium battery pack, which aims to improve the problem of reduced power supply efficiency caused by shaking of lithium batteries during equipment use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an explosion-proof safety lithium battery pack, including a base plate, a plurality of receiving boxes fixedly connected to the top of the base plate, a sealing component being provided on the top of each receiving box, a lithium battery being slidably connected inside each receiving box, a plurality of fixing grooves being provided on the outer wall of each lithium battery, and a plurality of fixing components being provided inside each receiving box.

[0007] Each of the fixing components includes multiple telescopic rods, a fixing plate, and multiple springs. One end of each telescopic rod is fixedly connected to the inner wall of the receiving box. One side of the fixing plate is fixedly connected to one end of the telescopic rod. Each spring is disposed on the outer wall of the telescopic rod. One end of each spring is fixedly connected to the inner wall of the receiving box, and the other end of each spring is fixedly connected to one side of the fixing plate. Multiple fixing strips are fixedly connected to one side of the fixing plate.

[0008] As a further description of the above technical solution:

[0009] Each of the sealing components includes a shaft and a cover plate, with the outer wall of each shaft rotatably connected to the top of the housing, and one side of each cover plate fixedly connected to the outer wall of the shaft.

[0010] As a further description of the above technical solution:

[0011] Each of the cover plates is fixedly connected to one side with a connecting block, and each of the connecting blocks is fixedly connected to one side with a handle.

[0012] As a further description of the above technical solution:

[0013] Each of the connecting blocks has multiple fixing pins slidably connected inside, and the fixing pins are arranged in a symmetrical array inside the connecting block.

[0014] As a further description of the above technical solution:

[0015] Each of the fixed pins is fixedly connected to a limiting plate on its outer wall, and the outer wall of each limiting plate is slidably connected to the inside of the connecting block.

[0016] As a further description of the above technical solution:

[0017] Each of the connecting blocks is provided with multiple springs II inside. One end of each spring II is fixedly connected to the inside of the connecting block, and the other end of each spring II is fixedly connected to one end of the fixing pin.

[0018] As a further description of the above technical solution:

[0019] Each of the containment boxes has multiple connecting plates fixedly connected to one side, and the connecting plates are arranged in a symmetrical array on one side of the containment box.

[0020] As a further description of the above technical solution:

[0021] The outer wall of each of the fixed pins passes through the inside of the connecting plate, and the outer wall of each of the connecting blocks is slidably connected between the connecting plates.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the lithium battery is first held and placed inside the storage box, causing the outer wall of the lithium battery to press against the fixing strip, which in turn presses the fixing plate outward. When the lithium battery reaches the deepest part of the storage box, the fixing strip pops out under the action of the spring and the telescopic rod and slides into the fixing groove. This achieves the effect of completely fixing the lithium battery inside the storage box during the use of the equipment, avoiding the problem of the lithium battery shaking during the use of the equipment, which would lead to a decrease in power supply efficiency. This improves the practicality of the explosion-proof and safe lithium battery pack.

[0024] 2. In this utility model, the fixing pin is first pressed down to retract into the connecting block, thereby unlocking the connecting block from between the connecting plates. Then, the handle is grasped and lifted upwards, which in turn drives the cover plate to open upwards, making it convenient for operators to replace the lithium battery. This achieves the effect of easily unlocking the cover plate during equipment use, making it convenient for operators to replace the lithium battery. It avoids the problem of needing complicated operations to open the storage box to replace the lithium battery during equipment use, thereby improving the practicality of the explosion-proof and safe lithium battery pack. Attached Figure Description

[0025] Figure 1 This is a perspective view of an explosion-proof and safe lithium battery pack proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of a housing box for an explosion-proof and safe lithium battery pack proposed in this utility model;

[0027] Figure 3 for Figure 2 A magnified view of the structure at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the internal structure of the connection block of an explosion-proof and safe lithium battery pack proposed in this utility model;

[0029] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0030] Legend:

[0031] 1. Base plate; 2. Storage box; 3. Rotating shaft; 4. Cover plate; 5. Lithium battery; 6. Fixing groove; 7. Telescopic rod; 8. Fixing plate; 9. Spring 1; 10. Fixing strip; 11. Connecting block; 12. Handle; 13. Fixing pin; 14. Limiting plate; 15. Spring 2; 16. Connecting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3 The present invention provides an embodiment of an explosion-proof safety lithium battery pack, comprising a base plate 1, a plurality of receiving boxes 2 fixedly connected to the top of the base plate 1 for storing lithium batteries 5, a sealing component provided on the top of each receiving box 2 for sealing the receiving box 2, a lithium battery 5 slidably connected inside each receiving box 2 for storing electricity, a plurality of fixing grooves 6 provided on the outer wall of each lithium battery 5 for accommodating fixing strips 10, and a plurality of fixing components provided inside each receiving box 2 for fixing the lithium battery 5;

[0034] Each fixing assembly includes multiple telescopic rods 7, fixing plates 8, and multiple springs 9. One end of each telescopic rod 7 is fixedly connected to the inner wall of the housing 2 to support the fixing plate 8. One side of the fixing plate 8 is fixedly connected to one end of the telescopic rod 7 to connect the fixing strips 10. Each spring 9 is disposed on the outer wall of the telescopic rod 7 to provide elastic force to the fixing plate 8. One end of each spring 9 is fixedly connected to the inner wall of the housing 2, and the other end of each spring 9 is fixedly connected to one side of the fixing plate 8. Multiple fixing strips 10 are fixedly connected to one side of the fixing plate 8 to fix the lithium battery 5. Each sealing assembly includes a rotating shaft 3 and a cover plate 4. The outer wall of each rotating shaft 3 is rotatably connected to the top of the housing 2 to provide mechanical support for the rotation of the cover plate 4. One side of each cover plate 4 is fixedly connected to the outer wall of the rotating shaft 3 to seal the housing 2.

[0035] Specifically, when the lithium battery 5 needs to be installed inside the housing box 2, the operator first holds the lithium battery 5, then slowly aligns it with the opening of the housing box 2 and precisely inserts it inside. During the insertion process, the outer wall of the lithium battery 5 begins to contact the fixing strip 10 inside the housing box 2 and gradually applies pressure to it. As the pressure increases, the fixing strip 10 is forced to push outward against the fixing plate 8. At this time, the telescopic rod 7 connected to the fixing plate 8 begins to retract, and the spring 9 is also compressed, generating elastic potential energy. When the lithium battery 5 successfully reaches the deepest part of the housing box 2, the fixing groove 6 pre-designed on the outer wall of the lithium battery 5 is exactly aligned with the fixing strip 10. Under the elastic restoring force of the spring 9, the fixing strip 10 quickly slides into the fixing groove 6, and the telescopic rod 7 also extends to provide stable support. At this time, the fixing strip 10 and the fixing groove 6 fit perfectly, firmly fixing the lithium battery 5 inside the housing box 2, ensuring that it will not affect the power supply efficiency due to shaking during equipment operation.

[0036] Reference Figure 4 and Figure 5 Each cover plate 4 has a connecting block 11 fixedly connected to one side for connecting the cover plate 4 and the receiving box 2. Each connecting block 11 has a handle 12 fixedly connected to one side for rotating the cover plate 4. Multiple fixing pins 13 are slidably connected inside each connecting block 11 for fixing the connecting block 11 and the connecting plate 16. The fixing pins 13 are arranged in a symmetrical array inside the connecting block 11. A limit plate 14 is fixedly connected to the outer wall of each fixing pin 13 to limit its movement range. The outer wall of each limit plate 14 is slidably connected inside the connecting block 11. Each connecting block 11 has multiple springs 15 inside to provide elastic force for the fixing pin 13. One end of each spring 15 is fixedly connected to the inside of the connecting block 11, and the other end of each spring 15 is fixedly connected to one end of the fixing pin 13. Each receiving box 2 has multiple connecting plates 16 fixedly connected to one side to cooperate with the connecting block 11 to fix the cover plate 4. The connecting plates 16 are arranged in a symmetrical array on one side of the receiving box 2. The outer wall of each fixing pin 13 passes through the inside of the connecting plate 16, and the outer wall of each connecting block 11 is slidably connected between the connecting plates 16.

[0037] Specifically, when it is necessary to replace the lithium battery 5 inside the containment box 2, the operator must first press the fixing pin 13, so that the fixing pin 13 slowly retracts into the connecting block 11 to complete the unlocking step, successfully releasing the connecting block 11 from the locked state between the two connecting plates 16. Then, the operator firmly grasps the handle 12 and then applies force evenly to lift it upward. During this process, the cover 4 rises smoothly, slowly revealing the lithium battery 5 inside the containment box 2. At this time, the entire operating space is completely open, with a clear view, providing the operator with a sufficient and convenient replacement environment, effectively improving the replacement efficiency and safety of the lithium battery 5.

[0038] Working principle: When using the explosion-proof safety lithium battery pack, first hold the lithium battery 5 and place it inside the housing box 2. This causes the outer wall of the lithium battery 5 to press against the fixing strip 10, which in turn presses the fixing plate 8 outward. When the lithium battery 5 reaches the deepest part of the housing box 2, the fixing strip 10 slides into the fixing groove 6 under the action of the spring 9 and the telescopic rod 7, thereby fixing the lithium battery 5 inside the housing box 2. When it is necessary to open the housing box 2 to replace the lithium battery 5, first press the fixing pin 13 to retract it into the connecting block 11, thereby unlocking the connecting block 11 from between the connecting plates 16. Then, hold the handle 12 and lift it upward, thereby driving the cover plate 4 to open upward, making it convenient for the operator to replace the lithium battery 5.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof safety lithium battery pack, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to a plurality of receiving boxes (2), each receiving box (2) is provided with a sealing component on its top, each receiving box (2) is slidably connected with a lithium battery (5), each lithium battery (5) is provided with a plurality of fixing slots (6) on its outer wall, and each receiving box (2) is provided with a plurality of fixing components. Each of the fixing components includes multiple telescopic rods (7), a fixing plate (8), and multiple springs (9). One end of each telescopic rod (7) is fixedly connected to the inner wall of the receiving box (2). One side of the fixing plate (8) is fixedly connected to one end of the telescopic rod (7). Each spring (9) is disposed on the outer wall of the telescopic rod (7). One end of each spring (9) is fixedly connected to the inner wall of the receiving box (2). The other end of each spring (9) is fixedly connected to one side of the fixing plate (8). Multiple fixing strips (10) are fixedly connected to one side of the fixing plate (8).

2. The explosion-proof safety lithium battery pack according to claim 1, characterized in that: Each of the sealing components includes a pivot (3) and a cover plate (4), with the outer wall of each pivot (3) rotatably connected to the top of the housing (2), and one side of each cover plate (4) fixedly connected to the outer wall of the pivot (3).

3. The explosion-proof safety lithium battery pack according to claim 2, characterized in that: Each of the cover plates (4) is fixedly connected to one side of a connecting block (11), and each of the connecting blocks (11) is fixedly connected to one side of a handle (12).

4. The explosion-proof safety lithium battery pack according to claim 3, characterized in that: Each of the connecting blocks (11) is slidably connected with a plurality of fixing pins (13), which are arranged in a symmetrical array inside the connecting blocks (11).

5. The explosion-proof safety lithium battery pack according to claim 4, characterized in that: Each of the fixed pins (13) is fixedly connected to a limiting plate (14) on its outer wall, and the outer wall of each limiting plate (14) is slidably connected inside the connecting block (11).

6. The explosion-proof safety lithium battery pack according to claim 3, characterized in that: Each of the connecting blocks (11) is provided with a plurality of springs (15) inside. One end of each spring (15) is fixedly connected to the inside of the connecting block (11), and the other end of each spring (15) is fixedly connected to one end of the fixing pin (13).

7. The explosion-proof safety lithium battery pack according to claim 1, characterized in that: Each of the containment boxes (2) is fixedly connected to one side with multiple connecting plates (16), and the connecting plates (16) are arranged in a symmetrical array on one side of the containment box (2).

8. The explosion-proof safety lithium battery pack according to claim 4, characterized in that: The outer wall of each of the fixed pins (13) passes through the interior of the connecting plate (16), and the outer wall of each of the connecting blocks (11) is slidably connected between the connecting plates (16).

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