Lithium ion battery pack with moisture-proof effect

Abstract

The lithium ion battery pack with the moisture-proof effect comprises a protective shell and a buffer assembly, a limiting block is fixedly installed on the top of the protective shell, hollow grooves are formed in the limiting block and the protective shell, a battery shell is installed in the hollow grooves, and the buffer assembly is fixedly installed on the top of the protective shell. The buffer assembly used for reducing the impact force borne by the battery shell is installed on the outer wall of the battery shell, the buffer assembly comprises a buffer plate, an installation groove, second absorbent cotton, a movable groove, a damping rod, a spring and an installation plate, the installation groove is formed in the outer wall of the buffer plate, and the installation groove is filled with the second absorbent cotton. A movable groove is formed in the end, away from the second absorbent cotton, of the buffer plate, and a damping rod is rotationally connected into the movable groove. According to the lithium ion battery pack with the moisture-proof effect, not only can the overall buffer structure of the battery shell be improved, but also moisture permeating around the battery shell can be adsorbed, and the influence of the moisture on a battery is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery packs, in particular to a lithium ion battery pack with moisture-proof effect. Background Art

[0002] Lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. During the charge and discharge process, Li+ is intercalated and deintercalated between the two electrodes: when charging, Li+ is deintercalated from the positive electrode and intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge.

[0003] For example, the patent document with application number CN201420624203.3 discloses a lithium-ion battery pack. The lithium-ion battery pack obtained by the technical solution of the utility model is easy to assemble and disassemble, and is conducive to avoiding adverse damage to the performance of the battery cell caused by series-parallel connection, which is conducive to improving the performance of the battery. However, the battery cell inside the lithium-ion battery pack may be damaged and caught fire due to external collision, affecting the normal use in the later stage.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a lithium-ion battery pack with moisture-proof effect is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a lithium-ion battery pack with moisture-proof effect to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium-ion battery pack with moisture-proof effect, comprising a protective shell and a buffer assembly, a limit block is fixedly installed on the top of the protective shell, and the limit block and the protective shell are provided with hollow grooves, a battery shell is installed inside the hollow groove, and the buffer assembly for reducing the impact force on the battery shell is installed on the outer wall of the battery shell, the buffer assembly comprises a buffer plate, a mounting groove, a second absorbent cotton, a movable groove, a damping rod, a spring and a mounting plate, an outer wall of the buffer plate is provided with a mounting groove, and the interior of the mounting groove is filled with the second absorbent cotton, an movable groove is provided at one end of the buffer plate away from the second absorbent cotton, and the interior of the movable groove is rotatably connected with a damping rod, the outer wall of the damping rod is sleeved with a spring, and the right end of the damping rod is rotatably connected with the mounting plate.

[0007] Preferably, a threaded groove is provided at the front end of the limit block, and a cover plate is sleeved on the outer wall of the limit block.

[0008] Preferably, a fixing screw is provided on the outer wall of the cover plate at a position corresponding to the thread groove, and the end of the fixing screw passes through the cover plate and is threadably connected to the thread groove.

[0009] Preferably, a metal contact is fixedly mounted on the left end of the protective shell, and the metal contact is electrically connected to the power source inside the battery shell.

[0010] Preferably, a groove is provided inside the protective shell, and the groove is arranged in a "U"-shaped structure as a whole.

[0011] Preferably, the interior of the groove is filled with a first absorbent cotton, and the outer wall of the first absorbent cotton is tightly fitted to the inner wall of the groove.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the lithium-ion battery pack with moisture-proof effect can not only improve the overall buffer structure of the battery shell, but also absorb the water that penetrates around the battery shell, thereby reducing the impact of water on the battery.

[0013] 1. The utility model provides a buffer assembly. When the battery housing moves toward the part that is impacted by the force, the spring provided on the mounting plate corresponding to the battery housing is pressed, and the impact force of the corresponding mounting plate is buffered by the spring. Then, the impact force when the spring is reset is offset by the damping rod provided inside the spring, so that the battery housing moves toward the corresponding mounting plate more smoothly, thereby achieving the purpose of improving the overall buffer structure of the battery housing.

[0014] 2. The utility model uses the arrangement of the first absorbent cotton in conjunction with the second absorbent cotton. When the outer wall of the protective shell is damaged, rainwater enters the groove and is absorbed by the first absorbent cotton filled in the groove. At the same time, when the protective shell is severely damaged, the second absorbent cotton can absorb the rainwater entering the hollow groove to further reduce the impact of moisture on the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a lithium-ion battery pack with moisture-proof effect according to the utility model;

[0016] Figure 2 This is a schematic diagram of the overall unfolded structure of a lithium-ion battery pack with moisture-proof effect of the utility model;

[0017] Figure 3 This is a schematic diagram of the side view structure of a buffer component of a lithium-ion battery pack with moisture-proof effect according to the utility model;

[0018] Figure 4 The utility model is a lithium ion battery pack with moisture-proof effect Figure 3 Schematic diagram of the structure.

[0019] In the figure: 1. Protective shell; 2. Limit block; 3. Hollow groove; 4. Battery shell; 5. Buffer assembly; 501. Buffer plate; 502. Mounting groove; 503. Second absorbent cotton; 504. Movable groove; 505. Damping rod; 506. Spring; 507. Mounting plate; 6. Threaded groove; 7. Cover plate; 8. Fixing screw; 9. Metal contact; 10. Groove; 11. First absorbent cotton. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 4 As shown, a lithium-ion battery pack with moisture-proof effect includes a protective shell 1 and a buffer component 5, characterized in that a limit block 2 is fixedly installed on the top of the protective shell 1, and a hollow groove 3 is provided inside the limit block 2 and the protective shell 1, a battery shell 4 is installed inside the hollow groove 3, and a buffer component 5 for reducing the impact force on the battery shell 4 is installed on the outer wall of the battery shell 4, and the buffer component 5 includes a buffer plate 501, a mounting groove 502, a second absorbent cotton 503, a movable groove 504, a damping rod 505, a spring 506 and a mounting plate 507, an outer wall of the buffer plate 501 is provided with a mounting groove 502, and the interior of the mounting groove 502 is filled with the second absorbent cotton 503, an end of the buffer plate 501 away from the second absorbent cotton 503 is provided with a movable groove 504, and the interior of the movable groove 504 is rotatably connected with the damping rod 505, the outer wall of the damping rod 505 is sleeved with a spring 506, and the right end of the damping rod 505 is rotatably connected with the mounting plate 507.

[0022] When the battery housing 4 moves toward the part that is impacted by the force, pressure is applied to the spring 506 arranged on the mounting plate 507 corresponding to the battery housing 4, and the impact force of the corresponding mounting plate 507 is buffered by the spring 506. The damping rod 505 arranged inside the spring 506 offsets the impact force when the spring 506 is reset, so that the battery housing 4 moves toward the corresponding mounting plate 507 more smoothly, thereby achieving the purpose of improving the overall buffer structure of the battery housing 4.

[0023] like Figure 1-Figure 2 As shown, a thread groove 6 is provided at the front end of the limit block 2 , and a cover plate 7 is sleeved on the outer wall of the limit block 2 .

[0024] The cover plate 7 is used to seal the top of the protective housing 1 .

[0025] Furthermore, a fixing screw 8 is provided at a position on the outer wall of the cover plate 7 corresponding to the thread groove 6 , and a distal end of the fixing screw 8 passes through the cover plate 7 and is threadedly connected to the thread groove 6 .

[0026] The fixing screws 8 are used to fix the cover plate 7 to the top of the protective housing 1 .

[0027] Furthermore, a metal contact 9 is fixedly mounted on the left end of the protective housing 1 , and the metal contact 9 is electrically connected to the power source inside the battery housing 4 .

[0028] The metal contact 9 is used to energize the battery disposed inside the battery housing 4.

[0029] Furthermore, a groove 10 is provided inside the protective shell 1, and the groove 10 is arranged in a "U"-shaped structure as a whole.

[0030] The groove 10 is used to place the first absorbent cotton 11 in the inner wall of the protective shell 1 .

[0031] Furthermore, the interior of the groove 10 is filled with a first absorbent cotton 11 , and the outer wall of the first absorbent cotton 11 is tightly fitted to the inner wall of the groove 10 .

[0032] The first absorbent cotton 11 is used to absorb the penetrated water.

[0033] Working principle: When using this moisture-proof lithium-ion battery pack, first

[0034] Embodiment 1: When the battery housing 4 moves toward the part that is impacted by the force, the spring 506 provided on the mounting plate 507 corresponding to the battery housing 4 is pressed, and the impact force of the corresponding mounting plate 507 is buffered by the spring 506, and the impact force of the spring 506 when it is reset is offset by the damping rod 505 provided inside the spring 506, so that the battery housing 4 moves toward the corresponding mounting plate 507 more smoothly,

[0035] Embodiment 2: When the outer wall of the protective shell 1 is damaged, rainwater enters the groove 10, and the first absorbent cotton 11 filled in the groove 10 absorbs the entered rainwater. At the same time, when the protective shell 1 is seriously damaged, the second absorbent cotton 503 can absorb the rainwater entering the hollow groove 3 to further reduce the impact of moisture on the battery. This is the working principle of the lithium-ion battery pack with moisture-proof effect.

Claims

1. A lithium-ion battery pack with moisture-proof effect, comprising a protective shell (1) and a buffer component (5), characterized in that: A limit block (2) is fixedly installed on the top of the protective shell (1), and a hollow groove (3) is provided inside the limit block (2) and the protective shell (1), and a battery shell (4) is installed inside the hollow groove (3). The buffer component (5) for reducing the impact force on the battery shell (4) is installed on the outer wall of the battery shell (4), and the buffer component (5) includes a buffer plate (501), a mounting groove (502), a second absorbent cotton (503), a movable groove (504), a damping rod (505), a spring (506), and a plurality of springs (507). 06) and a mounting plate (507), the outer wall of the buffer plate (501) is provided with a mounting groove (502), and the interior of the mounting groove (502) is filled with a second absorbent cotton (503), the end of the buffer plate (501) away from the second absorbent cotton (503) is provided with a movable groove (504), and the interior of the movable groove (504) is rotatably connected to a damping rod (505), the outer wall of the damping rod (505) is provided with a spring (506), and the right end of the damping rod (505) is rotatably connected to the mounting plate (507).

2. A lithium-ion battery pack with moisture-proof effect according to claim 1, characterized in that: A threaded groove (6) is provided at the front end of the limit block (2), and a cover plate (7) is sleeved on the outer wall of the limit block (2).

3. A lithium-ion battery pack with moisture-proof effect according to claim 2, characterized in that: A fixing screw (8) is provided at a position of the outer wall of the cover plate (7) corresponding to the thread groove (6), and the end of the fixing screw (8) passes through the cover plate (7) and is threadedly connected to the thread groove (6).

4. The lithium-ion battery pack with moisture-proof effect according to claim 1, characterized in that: A metal contact (9) is fixedly mounted on the left end of the protective housing (1), and the metal contact (9) is electrically connected to a power source inside the battery housing (4).

5. The lithium-ion battery pack with moisture-proof effect according to claim 1, characterized in that: A groove (10) is provided inside the protective shell (1), and the groove (10) is arranged in a "U"-shaped structure as a whole.

6. A lithium-ion battery pack with moisture-proof effect according to claim 5, characterized in that: The interior of the groove (10) is filled with a first absorbent cotton (11), and the outer wall of the first absorbent cotton (11) is tightly fitted to the inner wall of the groove (10).

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