Lithium battery safety protection device
The protective assembly, which combines a jacket and a spring, solves the problem of shaking and collision of lithium batteries when subjected to external impacts or vibrations. It achieves a stable and buffering effect, improves the safety and lifespan of lithium batteries, and simplifies the maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHONGLI TECH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-08
AI Technical Summary
Existing lithium battery protection devices directly expose the lithium battery to external impact or vibration, causing it to shake and collide, which can easily damage the battery casing, cause poor electrode contact, and affect safety and service life.
The protective assembly, which combines a jacket and a spring, achieves a stable and buffered fixation effect by tightly fitting the jacket to the side wall of the battery and using the elastic deformation of the spring to absorb the impact force, combined with the fixing structure of the telescopic rod and the insertion rod.
It effectively prevents the battery from shaking and colliding when subjected to external impacts or vibrations, protects the battery casing and internal structure, improves safety and lifespan, and facilitates battery maintenance and repair.
Smart Images
Figure CN224217612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery protection device technology, and in particular to a lithium battery safety protection device. Background Technology
[0002] Lithium-ion batteries, as an important energy storage device, are widely used in electronic devices, new energy vehicles, energy storage power stations, and many other fields. With the continuous expansion of lithium-ion battery applications and the increasing demand, their safety has become a growing concern. During use, transportation, and storage, lithium-ion batteries are subjected to various external impacts and vibrations, all of which can damage the batteries and lead to safety accidents. Therefore, developing effective lithium-ion battery safety protection devices is of great significance.
[0003] Currently, most common lithium battery protection devices adopt a rigid fixing structure, which uses simple slots or brackets to fix the lithium battery in the protection box. This fixing method mainly relies on mechanical locking to restrict the battery in a specific position. Its technical principle is to use the fit between the slot or bracket and the shape of the battery to achieve fixing through interference fit or snap connection.
[0004] Existing lithium battery protection devices, when subjected to external impacts or vibrations, lack an effective buffering mechanism, causing the lithium battery to directly bear the impact force. This results in the battery shaking and colliding in a fixed position, which not only easily leads to damage to the battery casing and poor electrode contact, but also easily causes damage to the internal structure of the battery, such as electrode material detachment and separator rupture. This greatly affects the safety and service life of the lithium battery. Therefore, a lithium battery safety protection device is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a lithium battery safety protection device, which aims to improve the problem in the prior art where, when the device is subjected to external impact or vibration, the lithium battery directly bears the impact force, causing the battery to shake or collide in a fixed position, which can easily lead to damage to the battery casing, poor electrode contact, and affect the safety and service life of the lithium battery.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A lithium battery safety protection device includes a housing, a cover slidably connected to the upper surface of the housing, an interface provided on the upper surface of the cover, a heat dissipation mesh fixedly connected to the side wall of the housing, a battery body disposed inside the housing, a protective component disposed inside the battery body, and a fixing component disposed on the side wall of the cover.
[0008] The protective assembly includes a jacket, a partition is fixedly connected inside the box, a first fixing sleeve is fixedly connected inside the box, the first fixing sleeve has a fixing hole inside, a second fixing sleeve is fixedly connected to both the inner wall of the box and the side wall of the partition, a telescopic rod is slidably connected inside the second fixing sleeve, a jacket is fixedly connected to one end of the telescopic rod, a fixing seat is fixedly connected to both the inner wall of the box and the side wall of the partition, a first spring is fixedly connected to the side wall of the fixing seat, and one end of the first spring is fixedly connected to the side wall of the jacket.
[0009] As a further description of the above technical solution:
[0010] The fixing component includes a plug, the sidewall of which is slidably connected inside the cover.
[0011] As a further description of the above technical solution:
[0012] The side wall of the battery body is slidably connected inside the fixing hole, and the side wall of the jacket is attached to the side wall of the battery body.
[0013] As a further description of the above technical solution:
[0014] The sealing cap sidewall is fixedly connected to a fixing shell, and the insertion rod sidewall is slidably connected inside the fixing shell.
[0015] As a further description of the above technical solution:
[0016] A fixing ring is fixedly connected to the side wall of the insertion rod, and the side wall of the fixing ring is slidably connected inside the fixing shell.
[0017] As a further description of the above technical solution:
[0018] A second spring is fitted on the side wall of the insertion rod. One end of the second spring is fixedly connected to the inside of the fixed shell, and the other end of the second spring is fixedly connected to the side wall of the fixed ring.
[0019] As a further description of the above technical solution:
[0020] The box body has an installation hole inside, and one end of the plug rod is slidably connected inside the installation hole.
[0021] As a further description of the above technical solution:
[0022] The other end of the insertion rod is rotatably connected to a rotating handle, and the side wall of the rotating handle has a groove for gripping.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the battery body is initially positioned by inserting it into the fixing hole. After the battery body is installed, the spring is in a compressed state, which generates an elastic force on the clamp towards the battery body, making the clamp tightly fit the side wall of the battery body. This not only securely fixes the battery, but also absorbs the impact force when the device is subjected to external impact or vibration through the elastic deformation of the spring and the buffering of the clamp, preventing the battery from being damaged by shaking or collision. This solves the problem that in some lithium battery safety protection devices, when the device is subjected to external impact or vibration, the lithium battery directly bears the impact force, causing the battery to shake or collide in a fixed position. This not only easily causes damage to the battery shell and poor electrode contact, but also easily leads to damage to the internal structure of the battery, affecting the safety and service life of the lithium battery. The above structure provides a protective effect for the battery.
[0025] 2. In this utility model, by pulling the rotating handle outward, the plug rod slides outward, thereby causing the fixing ring to squeeze the spring, allowing the plug rod to disengage from the fixing hole and releasing the fixing effect. At this time, the cover can be opened, which facilitates the maintenance and repair of the internal battery body, greatly saving maintenance time and labor costs and improving maintenance efficiency. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a lithium battery safety protection device proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the casing of a lithium battery safety protection device proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the internal structure of the housing of a lithium battery safety protection device proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the structure of the jacket of a lithium battery safety protection device proposed in this utility model;
[0030] Figure 5 This is a structural schematic diagram of the cross-sectional view of the housing of a lithium battery safety protection device proposed in this utility model;
[0031] Figure 6 This is a schematic diagram of the structure of the cover of a lithium battery safety protection device proposed in this utility model;
[0032] Figure 7 for Figure 6 Enlarged view of point A in the middle.
[0033] Legend:
[0034] 1. Box body; 2. Cover; 3. Heat dissipation mesh; 4. Battery body; 5. Divider; 6. Fixing sleeve one; 7. Fixing hole; 8. Fixing sleeve two; 9. Telescopic rod; 10. Clip; 11. Fixing base; 12. Spring one; 13. Interface; 14. Fixing shell; 15. Insert rod; 16. Fixing ring; 17. Spring two; 18. Rotating handle; 19. Groove; 20. Mounting hole. Detailed Implementation
[0035] 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.
[0036] Reference Figures 1-5 This utility model provides an embodiment of a lithium battery safety protection device, comprising a housing 1, a cover 2 slidably connected to the upper surface of the housing 1, an interface 13 on the upper surface of the cover 2 for electrical connection between the battery body 4 and external devices, a heat dissipation mesh 3 fixedly connected to the side wall of the housing 1 for dissipating heat generated by the battery body 4 during charging and discharging to the outside, reducing battery temperature by accelerating air convection and preventing foreign objects from entering, the battery body 4 being disposed inside the housing 1, and a protective component being disposed inside the battery body 4 for all-round protection of the battery body 4, reducing damage to the battery from external factors, and improving battery safety and service life, a fixing component being disposed on the side wall of the cover 2; the protective component includes a jacket 10 for direct contact and buffer protection of the battery body 4, through its own Elastic deformation absorbs external impact force, avoiding damage to the battery shell and internal structure. A partition 5 is fixedly connected inside the box 1. A fixing sleeve 6 is fixedly connected inside the box 1. A fixing hole 7 is opened inside the fixing sleeve 6. A fixing sleeve 8 is fixedly connected to both the inner wall of the box 1 and the side wall of the partition 5. A telescopic rod 9 is slidably connected inside the fixing sleeve 8. A clamp 10 is fixedly connected to one end of the telescopic rod 9. A fixing seat 11 is fixedly connected to both the inner wall of the box 1 and the side wall of the partition 5. A spring 12 is fixedly connected to the side wall of the fixing seat 11. One end of the spring 12 is fixedly connected to the side wall of the clamp 10. The side wall of the battery body 4 is slidably connected inside the fixing hole 7. The side wall of the clamp 10 is attached to the side wall of the battery body 4. Through the positioning of the fixing hole 7, the clamping of the clamp 10 and the elasticity of the spring 12, the three work together to achieve a stable and buffered fixing effect for the battery body 4.
[0037] Reference Figures 6-7The fixing assembly includes a rod 15, whose side wall is slidably connected to the inside of the cover 2. The rod 15 is used to fix the cover 2 to the housing 1. A fixing shell 14 is fixedly connected to the side wall of the cover 2. The side wall of the rod 15 is slidably connected to the inside of the fixing shell 14. A fixing ring 16 is fixedly connected to the side wall of the rod 15. The side wall of the fixing ring 16 is slidably connected to the inside of the fixing shell 14. A second spring 17 is sleeved on the side wall of the rod 15. The second spring 17 is used to generate elastic restoring force. When the rod 15 is inserted into the mounting hole 20, the second spring 17 is in a compressed state, continuously providing elastic force to press the rod 15 into the mounting hole 20, so that the cover 2 and the housing 1 are firmly fixed. A fixed connection is provided to prevent the insertion rod 15 from accidentally slipping out. One end of the second spring 17 is fixedly connected to the inside of the fixed housing 14, and the other end of the second spring 17 is fixedly connected to the side wall of the fixed ring 16. The fixed ring 16 is used to limit the sliding stroke of the insertion rod 15 and at the same time provide a support point for the second spring 17. The housing 1 has an installation hole 20 inside, and one end of the insertion rod 15 is slidably connected to the inside of the installation hole 20. The installation hole 20 is used to cooperate with the insertion rod 15 to form a fixed connection structure, providing a positioning space for the insertion rod 15 to be inserted. The other end of the insertion rod 15 is rotatably connected to a rotating handle 18. The side wall of the rotating handle 18 has a groove 19 for gripping, which facilitates gripping and applying force.
[0038] Working principle: When installing the battery body 4, its side wall is inserted into the fixing hole 7 of the fixing sleeve 1 6 to complete the initial positioning. After the battery body 4 is in place, the spring 12 is in a compressed state, and pushes the clamp 10 with its own elastic force to make it fit against the side wall of the battery body 4. When the device encounters external impact or vibration, the spring 12 undergoes elastic deformation, which, together with the clamp 10, buffers and absorbs the impact force, preventing the battery body 4 from shaking or being damaged by collision, thus ensuring battery safety. When installing the cover 2, the cover 2 is first placed on the box 1. During the sliding process, the insertion rod 15 is squeezed and slides into the fixing shell 14, squeezing the spring 2 17. When the cover 2 is fully closed, the elastic force generated by the spring 2 17 pushes the spring 12 into the box 1. The movable rod 15 slides into the mounting hole 20 to enclose the housing 1. When it is necessary to remove the cover 2 to maintain the internal battery body 4, the rotating handle 18 is pulled outward to make the rod 15 slide outward and the fixing ring 16 squeezes the spring 17, so that the rod 15 is disengaged from the mounting hole 20. At this time, the cover 2 can be removed to maintain the battery body 4 inside the housing 1. The heat dissipation mesh 3 on the side wall of the housing 1 provides a heat dissipation channel for the battery body 4. When the battery generates heat during operation, the heat is dissipated to the outside through air convection to maintain a suitable operating temperature for the battery. The interface 13 on the upper surface of the cover 2 is used for electrical connection between the battery body 4 and external equipment to realize charging and discharging functions.
[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. A lithium battery safety protection device, comprising a housing (1), characterized in that: The upper surface of the box (1) is slidably connected to a cover (2), the upper surface of the cover (2) is provided with an interface (13), the side wall of the box (1) is fixedly connected with a heat dissipation mesh (3), the inside of the box (1) is provided with a battery body (4), the inside of the battery body (4) is provided with a protective component, and the side wall of the cover (2) is provided with a fixing component. The protective assembly includes a sleeve (10), a partition (5) is fixedly connected inside the box (1), a fixing sleeve (6) is fixedly connected inside the box (1), a fixing hole (7) is opened inside the fixing sleeve (6), a fixing sleeve (8) is fixedly connected to both the inner wall of the box (1) and the side wall of the partition (5), a telescopic rod (9) is slidably connected inside the fixing sleeve (8), a sleeve (10) is fixedly connected to one end of the telescopic rod (9), a fixing seat (11) is fixedly connected to both the inner wall of the box (1) and the side wall of the partition (5), a spring (12) is fixedly connected to the side wall of the fixing seat (11), and one end of the spring (12) is fixedly connected to the side wall of the sleeve (10).
2. The lithium battery safety protection device according to claim 1, characterized in that: The fixing component includes a plug (15), the sidewall of which is slidably connected inside the cover (2).
3. The lithium battery safety protection device according to claim 1, characterized in that: The side wall of the battery body (4) is slidably connected inside the fixing hole (7), and the side wall of the sleeve (10) is attached to the side wall of the battery body (4).
4. A lithium battery safety protection device according to claim 2, characterized in that: The side wall of the cover (2) is fixedly connected to a fixed shell (14), and the side wall of the insertion rod (15) is slidably connected inside the fixed shell (14).
5. A lithium battery safety protection device according to claim 4, characterized in that: The insertion rod (15) has a fixed ring (16) fixedly connected to its side wall, and the side wall of the fixed ring (16) is slidably connected inside the fixed shell (14).
6. A lithium battery safety protection device according to claim 5, characterized in that: The insert rod (15) is fitted with a second spring (17) on its side wall. One end of the second spring (17) is fixedly connected to the inside of the fixed shell (14), and the other end of the second spring (17) is fixedly connected to the side wall of the fixed ring (16).
7. A lithium battery safety protection device according to claim 2, characterized in that: The housing (1) has an installation hole (20) inside, and one end of the plug rod (15) is slidably connected inside the installation hole (20).
8. A lithium battery safety protection device according to claim 2, characterized in that: The other end of the insertion rod (15) is rotatably connected to a rotating handle (18), and the side wall of the rotating handle (18) is provided with a groove (19) for gripping.