Lithium battery protection device

Abstract

The utility model provides a lithium battery protection device which comprises a protection box, a protection cover arranged at the top of the protection box, a storage battery pack arranged in the protection box, a protection circuit board arranged at the left end of the storage battery pack and a warning lamp, the protection circuit board is electrically connected with the storage battery pack, and the storage battery pack can be protected through the protection circuit board. For the protection of over-charge, over-discharge and over-current of the storage battery pack, the warning lamp is provided with a control mechanism for enabling the warning lamp to emit light. By arranging a placing plate, a bidirectional threaded rod, a movable connecting plate, a connecting frame and a driving motor, a storage battery pack can be moved to the outer wall of the protection box, the storage battery pack can be conveniently overhauled or replaced, the working efficiency is improved, by arranging a control mechanism, the action synchronization of warning lamp light emitting and placing plate rising can be achieved, and the safety is improved. The storage battery can be moved out of the protection box while warning is given out, the storage battery pack does not need to be moved out manually, the fire extinguishing time is saved, and meanwhile the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery protection equipment technology, and in particular to a lithium battery protection device. Background Technology

[0002] A search revealed that CN212751009U discloses a lithium battery protection device, including a protective housing with a cover and a handle. The device adds a protective housing to the existing lithium battery protection device. The cover is rotatably connected via a pivot, and the handle facilitates lifting the cover to prevent damage to the lithium battery. A cooling fan and an alarm are mounted on the inner front wall of the protective housing. The alarm's warning light is exposed, and a button is attached to the alarm. When the lithium battery housing heats up and expands beyond the safe operating range, it presses against a safety plate. The metal plate at the front of the fixing block on the safety plate presses the alarm button, causing the alarm to sound and the warning light to illuminate, thus alerting people to a problem with the lithium battery, prompting them to stop charging the battery, and to move to a safe distance.

[0003] In the aforementioned known technology, when the battery deforms and expands, the battery is inside the protective box. During the deformation process, the battery may burn. Since the battery generates heat, it is impossible to manually remove it from the protective box to extinguish the fire. In addition, after a period of use, the battery pack needs to be inspected or replaced. This requires workers to disassemble it inside the protective box and remove it before inspection or replacement can be performed. Due to the space limitations of the protective box, it is inconvenient to inspect or replace it.

[0004] Therefore, we propose a lithium battery protection device. Utility Model Content

[0005] To address the aforementioned issues, this utility model proposes a lithium battery protection device, comprising a protective box, a protective cover on top of the protective box, a battery pack inside the protective box, a protective circuit board on the left side of the battery pack, and a warning light. The protective circuit board is electrically connected to the battery pack, and the battery pack can be protected through the protective circuit board, such as overcharging, over-discharging, and overcurrent protection, thereby improving safety. The warning light is equipped with a control mechanism to make it illuminate.

[0006] The protective box contains a sliding mounting plate; a bidirectional threaded rod that rotates inside and has forward and reverse threaded grooves on its outer wall; movable connecting plates threaded to the two sets of threaded grooves on the bidirectional threaded rod; and connecting frames rotatably connected to the two movable connecting plates. The ends of the two connecting frames furthest from the movable connecting plates are rotatably connected to the bottom of the mounting plate. A drive motor is mounted on the bidirectional threaded rod to rotate it. A limit switch can be installed on the mounting plate so that the drive motor stops when the mounting plate reaches its highest position. By driving the drive motor, the bidirectional threaded rod rotates forward, the two movable connecting plates move closer together, and the bottom ends of the two connecting frames move closer together. The mounting plate begins to move upwards, carrying the battery pack, until the mounting plate and battery pack reach (e.g., ...). Figure 2 As shown in the diagram, the battery pack is exposed to the outside environment, making it easier to extinguish fires. In addition, the above operation can facilitate the operation when the battery pack needs to be inspected or replaced, thus improving the efficiency of replacement or inspection.

[0007] Furthermore, the control mechanism includes an insulating box fixed to the left end of the protective box and connected to a reset spring; a movable push rod disposed inside the insulating box and extending through its right end; a first conductive plate fixed to the left end of the movable push rod; and two second conductive plates disposed on the inner left wall of the insulating box.

[0008] Furthermore, the outer wall of the movable push rod extends into the interior of the protective box, and the right end of the movable push rod contacts the left end of the battery pack.

[0009] Furthermore, both conductive plates are electrically connected to the warning light and the drive motor.

[0010] Furthermore, a return spring is fixed between the conductive plate and the insulating box, and the outer wall of the movable push rod passes through the interior of the return spring, so that the return spring can reset the movable push rod.

[0011] Furthermore, the protective box is equipped with a connecting slide rod that penetrates the walls of the two movable connecting plates, allowing the two movable connecting plates to slide on the outer wall of the connecting slide rod when they move.

[0012] Furthermore, the drive motor is fixed to the left side of the protective box and its output end is connected to a bidirectional threaded rod.

[0013] Furthermore, the warning light is equipped with a buzzer, which can be used to issue an audible warning when danger occurs.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a placement plate, a two-way threaded rod, a movable connecting plate, a connecting frame, and a drive motor, the battery pack can be moved to the outer wall of the protective box, making it easier to inspect or replace the battery pack and improving work efficiency.

[0016] 2. By setting up a control mechanism, the actions of the warning light illuminating and the placement plate rising can be synchronized. While issuing a warning, the battery can be moved out of the protective box without the need for manual approach to the battery pack to remove it, which saves fire extinguishing time and improves safety. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a perspective view of the battery pack of this utility model;

[0019] Figure 3 This is a sectional perspective view of the protective box of this utility model;

[0020] Figure 4 This is a cross-sectional perspective view of the insulating box of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Protective box; 2. Protective cover; 3. Battery pack; 4. Warning light; 5. Placement plate; 6. Two-way threaded rod; 7. Movable connecting plate; 8. Connecting frame; 9. Connecting slide rod; 10. Protective circuit board; 11. Insulation box; 12. Movable push rod; 13. Conductive plate one; 14. Return spring; 15. Conductive plate two; 16. Drive motor. Detailed Implementation

[0023] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0024] Please refer to Figure 1 - Figure 4 This utility model proposes a lithium battery protection device, including a protective box 1, a protective cover 2 set on the top of the protective box 1, a battery pack 3 set inside the protective box 1, a protective circuit board 10 set on the left end of the battery pack 3, and a warning light 4. The protective circuit board 10 is electrically connected to the battery pack 3. The protective circuit board 10 can protect the battery pack 3, such as protecting against overcharging, over-discharging and overcurrent, thereby improving safety. The warning light 4 is provided with a control mechanism to make it light up.

[0025] The protective box 1 contains a placement plate 5 that slides up and down inside and is connected to the protective cover 2; a bidirectional threaded rod 6 that can rotate inside and has forward and reverse threaded grooves on its outer wall; a movable connecting plate 7 that is threadedly connected to the two sets of threaded grooves of the bidirectional threaded rod 6; and a connecting frame 8 that is rotatably connected to the two movable connecting plates 7. The ends of the two connecting frames 8 that are away from the movable connecting plates 7 are rotatably connected to the bottom of the placement plate 5. A drive motor 16 that rotates the bidirectional threaded rod 6 is provided. A limit switch can be provided on the placement plate 5 so that the drive motor 16 can stop driving when the placement plate 5 rises to the highest position. By driving the drive motor 16, the bidirectional threaded rod 6 rotates in the forward direction, the two movable connecting plates 7 move closer to each other, and the bottom ends of the two connecting frames 8 move closer to each other. The placement plate 5 begins to move upward with the battery pack 3 until the placement plate 5 and the battery pack 3 move to the position shown in the protective cover 2. At this time, the battery pack 3 is exposed to the outside, which facilitates the fire extinguishing of the battery pack 3. In addition, through the above operation, when the battery pack 3 needs to be inspected or replaced, it is convenient to operate and improves the efficiency of its replacement or inspection.

[0026] The control mechanism includes an insulating box 11 fixed to the left side of the protective box 1 and connected to a return spring 14; a movable push rod 12 disposed inside the insulating box 11 and extending through its right end; a conductive plate 13 fixed to the left side of the movable push rod 12; and two conductive plates 15 disposed on the inner left side of the insulating box 11. The outer wall of the movable push rod 12 extends into the interior of the protective box 1, and the right end of the movable push rod 12 contacts the left end of the battery pack 3. Both conductive plates 15 are electrically connected to the warning light 4 and the drive motor 16. Specifically, the two conductive plates 15, the warning light 4, and the drive motor 16 are in a disconnected series circuit. When power is required, the conductive plate 13 and the two conductive plates 15 need to be brought into contact with each other. In practical operation, when the battery pack 3 expands, the lowered push rod 12 moves to the left, the first conductive plate 13 moves to the left and contacts the two second conductive plates 15, the warning light 4 and the drive motor 16 are powered on, the warning light 4 starts to emit light to provide a safety warning, and the drive motor 16 starts to drive and control the forward rotation. This allows the warning light 4 to emit light and the placement plate 5 to rise synchronously. At the same time as issuing the warning, the battery 3 can be moved out of the protective box 1 without the need for manual approach to the battery pack 3 to remove it, which saves fire extinguishing time and improves safety.

[0027] A return spring 14 is fixed between the conductive plate 13 and the insulating box 11. The outer wall of the movable push rod 12 passes through the interior of the return spring 14. The return spring 14 can reset the movable push rod 12. In use, when the movable push rod 12 is subjected to force and moves to the left, the return spring 14 will be stretched. Conversely, when the movable push rod 12 is released from the external force, the return spring 14 begins to contract, moving the movable push rod 12 to the left. The conductive plate 13 will separate from the two conductive plates 15, the warning light 4 will stop alarming, and the drive motor 16 will stop driving, realizing the automatic shutdown operation.

[0028] The protective box 1 is equipped with a connecting slide rod 9 that runs through the walls of the two movable connecting plates 7. When the two movable connecting plates 7 move, they can slide on the outer wall of the connecting slide rod 9. The connecting slide rod 9 can limit the movement of the two movable connecting plates 7 and ensure the stability of their movement.

[0029] The drive motor 16 is fixed to the left end of the protective box 1 and its output end is connected to the bidirectional threaded rod 6.

[0030] The warning light 4 is equipped with a buzzer. By adding a buzzer, an audible warning can be given when danger occurs, thus improving the warning effect.

[0031] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A lithium battery protection device, comprising a protective box (1), a protective cover (2) disposed on the top of the protective box (1), a battery pack (3) disposed inside the protective box (1), a protective circuit board (10) disposed on the left end of the battery pack (3), and a warning light (4) provided with a control mechanism, characterized in that, The protective box (1) is equipped with a placement plate (5) that can slide up and down inside it; a bidirectional threaded rod (6) that can rotate inside it and has positive and negative threaded grooves on its outer wall; a movable connecting plate (7) that is threaded to the two sets of threaded grooves of the bidirectional threaded rod (6); and a connecting frame (8) that is rotatably connected to the two movable connecting plates (7), with the ends of the two connecting frames (8) away from the movable connecting plates (7) being rotatably connected to the bottom of the placement plate (5). The bidirectional threaded rod (6) is equipped with a drive motor (16) for rotating it.

2. The lithium battery protection device according to claim 1, characterized in that, The control mechanism includes an insulating box (11) fixed to the left side of the protective box (1) and connected to the return spring (14); a movable push rod (12) disposed inside the insulating box (11) and extending through its right end; a first conductive plate (13) fixed to the left side of the movable push rod (12); and two second conductive plates (15) disposed on the left inner wall of the insulating box (11).

3. The lithium battery protection device according to claim 2, characterized in that, The outer wall of the movable push rod (12) extends into the interior of the protective box (1), and the right end of the movable push rod (12) contacts the left end of the battery pack (3).

4. The lithium battery protection device according to claim 2, characterized in that, Both of the conductive plates (15) are electrically connected to the warning light (4) and the drive motor (16).

5. The lithium battery protection device according to claim 2, characterized in that, A reset spring (14) is fixed between the conductive plate (13) and the insulating box (11). The outer wall of the moving push rod (12) passes through the interior of the reset spring (14), and the reset spring (14) can reset the moving push rod (12).

6. The lithium battery protection device according to claim 1, characterized in that, The protective box (1) is equipped with a connecting slide rod (9) that runs through the walls of the two movable connecting plates (7).

7. The lithium battery protection device according to claim 1, characterized in that, The drive motor (16) is fixed to the left side of the protective box (1) and its output end is connected to the bidirectional threaded rod (6).

8. The lithium battery protection device according to claim 1, characterized in that, The warning light (4) is equipped with a buzzer.

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