Lithium battery pack charging and discharging protection plate

Abstract

The utility model provides a lithium battery group fills and discharges protection board belongs to lithium battery technical field. The lithium battery group fills and discharges protection board, including the shell, the top of shell is opened with the sliding slot, the inside sliding sleeve of sliding slot has the baffle, the inner wall one side of shell is fixedly connected with spring no.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a lithium battery pack charge and discharge protection board. Background Technology

[0002] Lithium batteries are widely used in mobile phones, laptops, digital cameras, electric vehicles, and portable electronic devices, providing power to these devices so that they can be carried around and used for extended periods of time.

[0003] During the charging and discharging process of lithium batteries, the insertion and extraction of lithium ions between the positive and negative electrodes will cause changes in the volume of the electrode materials. The insertion of lithium ions will increase the interlayer spacing of graphite, thereby causing the negative electrode to expand. Battery expansion may increase safety risks, such as battery short circuits and thermal runaway. These situations can lead to battery overheating, fire, or even explosion. However, lithium batteries are often stored internally, and the expansion of the battery cannot be visually detected, leading to dangerous situations.

[0004] Therefore, this utility model proposes a lithium battery pack charge and discharge protection board. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery pack charge and discharge protection board to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lithium battery pack charge and discharge protection board includes a housing, a groove is provided at the top of the housing, a baffle is slidably sleeved inside the groove, a spring is fixedly connected to one side of the inner wall of the housing, a conductive plate is fixedly connected to the back of the spring, and a power line is electrically connected to the side of the conductive plate.

[0008] Furthermore, multiple sets of insulating partitions are fixedly connected to the inner wall of the outer shell. Lithium batteries are arranged on opposite sides of two sets of insulating partitions. The protruding end of the front of the lithium battery is in contact with the conductive plate. A protective push plate 2 is attached to the back of the lithium battery. One end of a transmission rod 3 is fixedly connected to the back of the protective push plate 2. The other end of the transmission rod 3 is fixedly connected to the inner wall of the outer shell. Both sides of the protective push plate 2 are in contact with the outer wall of the insulating partition.

[0009] Furthermore, each set of lithium batteries has four sets of arc-shaped clamps attached to both sides, and a second spring is fixedly connected to the back of the arc-shaped clamps, and the side of the second spring is fixedly connected to the insulating partition.

[0010] Furthermore, a telescopic slide rod is fixedly connected to the outer wall of the arc-shaped clamp, and one end of a transmission rod is hinged to the inner wall of the telescopic slide rod near one or both sides. A hinge block is hinged to the other end of the transmission rod. The outer wall of the hinge block is fixedly connected to a protective push plate. Limiting plates are movably sleeved on both the upper and lower sides of the protective push plate. The side of the limiting plate is fixedly connected to the inner wall of the outer shell.

[0011] Furthermore, protective push plates are provided on opposite sides of the two sets of telescopic slide rods. One end of a transmission rod is hinged to the inner wall of the protective push plate, and the other end of the transmission rod is hinged to one set of telescopic slide rods. One end of a transmission rod is hinged to the inside of the protective push plate, and the other end of the transmission rod is hinged to another set of telescopic slide rods. The transmission rods 2 and 3 are hinged to each other.

[0012] Furthermore, the protective push plate is flush with the front of the telescopic slide rod.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. When the lithium battery expands to a critical level, the telescopic slide and the protective push plate work together to push the expanded part of the lithium battery to separate from the conductive plate, cut off the internal circuit connection of the battery, and put the battery into a state where it can no longer work, thereby preventing the risk of explosion that may be caused by excessive battery expansion and ensuring the personal safety of users.

[0015] 2. The outer protective shell provides initial protection for the lithium battery. Its internal design includes multiple sets of structural insulating separators and multiple sets of structural arc-shaped clamps. These structures work together to clamp and fix the lithium battery. This design effectively avoids excessive friction between the lithium batteries and prevents damage to the outer packaging, thereby reducing the risk of catastrophic accidents. Attached Figure Description

[0016] Figure 1 This is an external view of the lithium battery pack charge and discharge protection board of this utility model;

[0017] Figure 2 This is a diagram showing the internal structure of the lithium battery pack charge / discharge protection board of this utility model.

[0018] Figure 3 This is a partial side view of the lithium battery pack charge and discharge protection board of this utility model.

[0019] Figure 4 This is a partial internal structural diagram of the lithium battery pack charge and discharge protection board of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Outer shell; 2. Baffle; 3. Power cord; 4. Spring 1; 5. Conductive plate; 6. Insulating partition; 7. Transmission rod 3; 8. Protective push plate 2; 9. Lithium battery; 10. Arc-shaped clamp; 11. Spring 2; 12. Limiting plate; 13. Protective push plate 1; 14. Hinge block; 15. Transmission rod 1; 16. Telescopic slide rod; 17. Transmission rod 2. 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. 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.

[0023] Example 1

[0024] Please see Figures 1 to 4 As shown, the lithium battery pack charging and discharging protection board provided by this utility model includes a shell 1. A groove is provided at the top of the shell 1. A baffle 2 is slidably sleeved inside the groove. A spring 4 is fixedly connected to one side of the inner wall of the shell 1. A conductive plate 5 is fixedly connected to the back of the spring 4. A power line 3 is electrically connected to the side of the conductive plate 5.

[0025] Multiple sets of insulating partitions 6 are fixedly connected to the inner wall of the outer casing 1. Lithium batteries 9 are arranged on opposite sides of two sets of insulating partitions 6. The protruding end of the front of the lithium battery 9 is attached to the conductive plate 5. A protective push plate 2 8 is attached to the back of the lithium battery 9. One end of a transmission rod 3 7 is fixedly connected to the back of the protective push plate 2 8. The other end of the transmission rod 3 7 is fixedly connected to the inner wall of the outer casing 1. Both sides of the protective push plate 2 8 are attached to the outer wall of the insulating partition 6.

[0026] Each lithium battery 9 has four sets of arc-shaped clamps 10 attached to both sides. A second spring 11 is fixedly connected to the back of the arc-shaped clamps 10, and the side of the second spring 11 is fixedly connected to the insulating partition 6.

[0027] In use, firstly, multiple sets of lithium batteries 9 are inserted into the opposite sides of four sets of arc-shaped clamps 10. Under the influence of the elastic potential energy of spring 2 11, the lithium batteries 9 are fixed in the middle position. At this time, the conductive plate 5 is aligned with the protruding end of the lithium battery 9. Under the influence of the elastic potential energy of spring 1 4, the conductive plate 5 is pushed to fit tightly with the lithium battery 9, fixing the lithium battery 9 in a suitable position, reducing friction between the lithium battery 9 and other surrounding components, avoiding damage to the outer packaging of the lithium battery 9, and maintaining the stability of the lithium battery 9.

[0028] Example 2

[0029] Based on Example 1, please refer to Figures 1 to 4 As shown, a telescopic slide rod 16 is fixedly connected to the outer wall of the arc-shaped clamping plate 10. One end of a transmission rod 15 is hinged to the inner wall of the telescopic slide rod 16 near one or both sides. The other end of the transmission rod 15 is hinged to a hinge block 14. The outer wall of the hinge block 14 is fixedly connected to the protective push plate 13. Limiting plates 12 are movably sleeved on both the upper and lower sides of the protective push plate 13. The side of the limiting plates 12 is fixedly connected to the inner wall of the outer shell 1.

[0030] Protective push plates 2 and 8 are provided on opposite sides of the two sets of telescopic slide rods 16. One end of transmission rod 2 and 17 is hinged to the inner wall of the protective push plate 2 and 8. The other end of transmission rod 2 and 17 is hinged to one of the sets of telescopic slide rods 16. One end of transmission rod 3 and 7 is hinged to the inside of the protective push plate 2 and 8. The other end of transmission rod 3 and 7 is hinged to the other set of telescopic slide rods 16. Transmission rod 2 and 17 and transmission rod 3 and 7 are hinged to each other.

[0031] The front of the protective push plate 13 is flush with the front of the telescopic slide bar 16.

[0032] When the lithium battery 9 expands after the battery pack has been used for a certain period of time, posing a certain safety hazard, the expansion of the lithium battery 9 pushes the telescopic slide rods 16 on both sides to move inside the insulating partition 6. One end of the set of telescopic slide rods 16 near the outside pushes the transmission rod 15 to hinge with the hinge block 14, thereby pushing the protective push plate 13 to slide forward inside the limiting plate 12. This causes the protective push plate 13 to slide forward beyond the protruding end of the lithium battery 9, pushing the lithium battery 9 to break contact with the surface of the conductive plate 5. The lithium battery 9 in the middle expands, and the two sets of telescopic slide rods 16 will respectively push the transmission rod 2 17 and the transmission rod 3 7 to hinge with the protective push plate 2 8, and push the protective push plate 2 8 to move forward. This causes the front of the protective push plate 2 8 to also push the conductive plate 5 to break contact with the protruding end of the lithium battery 9, thereby disconnecting the power input and output, keeping the lithium battery 9 in a stable state, and preventing the risk of explosion that may be caused by excessive battery expansion.

[0033] 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 pack charge / discharge protection board, characterized in that, Includes a shell (1), the top of the shell (1) is provided with a sliding groove, a baffle (2) is slidably sleeved inside the sliding groove, a spring (4) is fixedly connected to one side of the inner wall of the shell (1), a conductive plate (5) is fixedly connected to the back of the spring (4), and a power line (3) is electrically connected to the side of the conductive plate (5). The inner wall of the outer shell (1) is fixedly connected to multiple sets of insulating partitions (6), and lithium batteries (9) are provided on opposite sides of two sets of insulating partitions (6). The protruding end of the front of the lithium battery (9) is in contact with the conductive plate (5), and the back of the lithium battery (9) is in contact with the inner wall of the outer shell (1). Each lithium battery (9) has four sets of arc-shaped clamps (10) attached to both sides. A second spring (11) is fixedly connected to the back of the arc-shaped clamp (10), and the side of the second spring (11) is fixedly connected to the insulating partition (6). The outer wall of the arc-shaped clamp (10) is fixedly connected to a telescopic slide rod (16). The inner wall of the telescopic slide rod (16) near both sides is hinged to one end of a transmission rod (15). The other end of the transmission rod (15) is hinged to a hinge block (14). The outer wall of the hinge block (14) is fixedly connected to a protective push plate (13). The upper and lower sides of the protective push plate (13) are movably fitted with limit plates (12). The side of the limit plates (12) is fixedly connected to the inner wall of the outer shell (1). Two sets of telescopic slide rods (16) are provided with protective push plates (8) on opposite sides. One end of a transmission rod (17) is hinged to the inner wall of the protective push plate (8). The other end of the transmission rod (17) is hinged to one set of telescopic slide rods (16). One end of a transmission rod (7) is hinged to the inside of the protective push plate (8). The other end of the transmission rod (7) is hinged to another set of telescopic slide rods (16). The transmission rod (17) and the transmission rod (7) are hinged to each other.

2. The lithium battery pack charge / discharge protection board according to claim 1, characterized in that, The protective push plate (13) is flush with the front of the telescopic slide bar (16).

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