Lithium battery pack with waterproof structure

Abstract

The utility model relates to the field of lithium batteries, and discloses a lithium battery pack with a waterproof structure, which comprises a battery pack shell and a battery pack cover, a bottom drying piece is detachably arranged on the inner side of the bottom of the battery pack shell, a battery pack support is arranged above the bottom drying piece, and the battery pack support comprises a supporting plate arranged above the bottom drying piece. A plurality of partition plates are uniformly arranged above the supporting plate, a single lithium battery is arranged between every two partition plates, a waterproof assembly is arranged on the multiple single lithium batteries, an annular groove is formed in the upper portion of the battery pack shell, the battery pack cover is clamped with the annular groove, and the bottom drying part comprises a supporting seat arranged on the inner side of the bottom of the battery pack shell; a moisture absorption bag is embedded in the upper part of the supporting seat, and a plurality of slotted holes are uniformly formed in the side surface of the supporting seat, so that the waterproof performance of the lithium battery pack can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and specifically relates to a lithium battery pack with a waterproof structure. Background Art

[0002] A lithium battery pack is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. It has the advantages of high energy, long service life, high rated voltage, high power tolerance, and strong adaptability to high and low temperatures. With the development of science and technology, lithium battery packs have gradually become the mainstream of battery research and have been widely used in industries such as communications, electric vehicles, electric bicycles, and drones.

[0003] The usage scenarios of lithium batteries are diverse. Therefore, some application scenarios of lithium batteries are set outdoors. At this time, if the waterproof effect is not good, in rainy or humid weather, moisture will seep into the interior of the lithium battery pack, causing damage to the lithium battery and thus affecting the normal use of the lithium battery pack. Therefore, we propose a lithium battery pack with a waterproof structure. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a lithium battery pack with a waterproof structure, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: The utility model discloses a lithium battery pack with a waterproof structure, which includes a battery pack housing and a battery pack cover. A bottom drying member is detachably arranged on the inner side of the bottom of the battery pack housing. A battery pack support is arranged above the bottom drying member. The battery pack support includes a support plate arranged above the bottom drying member. A plurality of partition plates are evenly arranged above the support plate. A single lithium battery is arranged between two partition plates. A waterproof component is arranged on a plurality of single lithium batteries. An annular groove is opened above the battery pack housing. The battery pack cover is engaged with the annular groove.

[0006] As a preferred solution, the bottom drying member includes a support seat arranged on the inner side of the bottom of the battery pack housing. A moisture absorption packet is embedded above the support seat. A plurality of slot holes are evenly opened on the side surface of the support seat.

[0007] As a preferred solution, a plurality of slots are evenly opened on the support plate. A plurality of sets of support feet are evenly arranged on the support plate. The slots and the sets of support feet are located between two adjacent partition plates. The bottom of the corresponding single lithium battery is attached to the sets of support feet.

[0008] As a preferred solution, the waterproof component includes a water isolation plate, on which a plurality of through grooves are uniformly formed. The plurality of through grooves respectively correspond to the plurality of single lithium batteries. Inner gaskets are arranged on the side walls of the through grooves, and the corresponding inner gaskets are attached to the side walls of the single lithium batteries. An outer gasket is arranged on the outer side of the water isolation plate, and the outer gasket is attached to the inner wall of the battery pack housing.

[0009] As a preferred solution, drying packets are respectively arranged on the left and right sides above the water isolation plate.

[0010] As a preferred solution, the plurality of single lithium batteries are connected in series through a wire row.

[0011] As a preferred solution, a through hole is formed in the upper left side of the battery pack housing, and the through hole is communicated with the annular groove.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] Through the structural arrangement of the waterproof component, the waterproof property of the lithium battery pack is improved. By arranging inner gaskets on the side walls of the through grooves, the corresponding inner gaskets are attached to the side walls of the single lithium batteries, and an outer gasket is arranged on the outer side of the water isolation plate, and the outer gasket is attached to the inner wall of the battery pack housing. Since the inner gasket and the outer gasket are made of silicone material, and silicone has a certain elasticity, the inner gasket is more stably attached to the side wall of the single lithium battery, and the outer gasket is more stably attached to the inner wall of the battery pack housing, thereby preventing water from seeping down through the water isolation plate.

[0014] By filling waterproof glue in the annular groove, and then clamping the bottom of the battery pack cover in the annular groove, the gas and the excess glue are discharged through the through hole, thereby improving the sealing performance of the closure of the battery pack housing and the battery pack cover, and further improving the waterproof property of the lithium battery pack.

[0015] Through the structural arrangement of the bottom drying member, the inside of the battery pack housing is dried, which plays a certain role in waterproofing, and prevents the inside of the battery pack housing from being in a humid state, thereby affecting the normal use of the lithium battery pack. A plurality of slot holes are uniformly formed on the side surface of the support seat, which is beneficial for the moisture absorption packet to dry the inside of the battery pack housing, and drying packets are respectively arranged on the left and right sides above the water isolation plate, which also plays a certain role in waterproofing. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0017] Figure 2 is Figure 1 the enlarged view of part A in

[0018] Figure 3 It is a schematic structural diagram inside the battery pack housing;

[0019] Figure 4 It is a three-dimensional structural diagram of the battery pack bracket;

[0020] Figure 5 It is a three-dimensional structural diagram of the bottom drying member.

[0021] In the figure: 1. Battery pack housing; 2. Battery pack cover; 3. Support plate; 4. Partition; 5. Single lithium battery; 6. Ring groove; 7. Support seat; 8. Moisture absorption packet; 9. Slot hole; 10. Slot body; 11. Leg group; 12. Water isolation plate; 13. Through slot; 14. Inner gasket; 15. Outer gasket; 16. Drying packet; 17. Through hole. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 5 A lithium battery pack with a waterproof structure in this embodiment includes a battery pack housing 1 and a battery pack cover 2. The battery pack housing 1 and the battery pack cover 2 are made of polyethylene material. A bottom drying member is detachably arranged on the inner side of the bottom of the battery pack housing 1 for drying the inside of the battery pack housing 1 to avoid the inside of the battery pack housing 1 being in a humid state, thereby affecting the normal use of the lithium battery pack. A battery pack bracket is arranged above the bottom drying member. The battery pack bracket is used for supporting and placing a plurality of single lithium batteries 5. The battery pack bracket includes a support plate 3 arranged above the bottom drying member. A plurality of partitions 4 are evenly arranged above the support plate 3. The partition 4 is made of copper. On the one hand, it can separate two adjacent single lithium batteries 5, and on the other hand, it can conduct heat for the single lithium battery 5. A single lithium battery 5 is arranged between two partitions 4. A waterproof component is arranged on a plurality of single lithium batteries 5 to improve the waterproofness of the lithium battery pack. A ring groove 6 is opened above the battery pack housing 1. The battery pack cover 2 is engaged with the ring groove 6 to seal the single lithium battery 5 in the battery pack housing 1.

[0024] Such as Figure 3 、 5As shown in the figure, the bottom drying component includes a support seat 7 disposed inside the bottom of the battery pack housing 1. A moisture absorption pack 8 is embedded above the support seat 7. The moisture absorption pack 8 is made of silica gel particles wrapped in non-woven fabric, which will dry the inside of the battery pack housing 1, providing a certain degree of waterproofing, preventing the inside of the battery pack housing 1 from being in a humid state, and thus affecting the normal use of the lithium battery pack. A plurality of slot holes 9 are evenly formed on the side surface of the support seat 7, which is beneficial for the moisture absorption pack 8 to dry the inside of the battery pack housing 1.

[0025] As Figure 4 shown in the figure, a plurality of slot bodies 10 are evenly formed on the support plate 3. A plurality of leg groups 11 are evenly disposed on the support plate 3. The slot bodies 10 and the leg groups 11 are located between two adjacent partition plates 4. The bottom of the corresponding single lithium battery 5 is in contact with the leg groups 11. On the one hand, it is convenient for the moisture absorption pack 8 to dry the inside of the battery pack housing 1, and on the other hand, it is convenient for heat dissipation of the single lithium battery 5.

[0026] As Figure 1 、 2 As shown in FIGS. 1 and 3, the waterproof component includes a water separation plate 12. A plurality of through slots 13 are evenly formed on the water separation plate 12. The plurality of through slots 13 respectively correspond to a plurality of single lithium batteries 5. An inner gasket 14 is disposed on the side wall of the through slot 13. The corresponding inner gasket 14 is in contact with the side wall of the single lithium battery 5. An outer gasket 15 is disposed on the outer side of the water separation plate 12. The outer gasket 15 is in contact with the inner wall of the battery pack housing 1. The inner gasket 14 and the outer gasket 15 are made of silica gel. Silica gel has a certain elasticity, so that the inner gasket 14 fits more stably with the side wall of the single lithium battery 5, and the outer gasket 15 fits more stably with the inner wall of the battery pack housing 1, thereby preventing water from seeping down through the water separation plate 12.

[0027] As Figure 1 、 2 shown in the figure, drying packs 16 are respectively disposed on the left and right sides above the water separation plate 12. The drying packs 16 are made of silica gel particles wrapped in non-woven fabric, which will dry the inside of the battery pack housing 1, providing a certain degree of waterproofing, preventing the inside of the battery pack housing 1 from being in a humid state, and thus affecting the normal use of the lithium battery pack.

[0028] As Figure 1 shown in the figure, a plurality of single lithium batteries 5 are connected in series through a wire row. The outer side of the wire row is galvanized to improve the service life of the wire row. A contact for connecting and adapting to the single lithium battery 5 is disposed on the battery pack cover 2.

[0029] As Figure 1 、 2As shown, a through hole 17 is provided on the upper left side of the battery pack housing 1. The through hole 17 is communicated with the annular groove 6. Waterproof glue is filled in the annular groove 6, and then the bottom of the battery pack cover 2 is placed in the annular groove 6 in a clamping manner. Gas and excess glue are discharged through the through hole 17, thereby improving the sealing performance of the closure of the battery pack housing 1 and the battery pack cover 2, and further improving the waterproof performance of the lithium battery pack.

[0030] In the specific implementation of this embodiment, through the structural arrangement of the waterproof component, the waterproof performance of the lithium battery pack is improved. By providing an inner gasket 14 on the side wall of the through groove 13, the corresponding inner gasket 14 is attached to the side wall of the single lithium battery 5, and an outer gasket 15 is provided on the outer side of the water isolation plate 12. The outer gasket 15 is attached to the inner wall of the battery pack housing 1. Since the inner gasket 14 and the outer gasket 15 are made of silicone material, and silicone has a certain elasticity, the inner gasket 14 is more stably attached to the side wall of the single lithium battery 5, and the outer gasket 15 is more stably attached to the inner wall of the battery pack housing 1, thereby preventing water from seeping down from the water isolation plate 12. By filling waterproof glue in the annular groove 6 and then placing the bottom of the battery pack cover 2 in the annular groove 6 in a clamping manner, gas and excess glue are discharged through the through hole 17, thereby improving the sealing performance of the closure of the battery pack housing 1 and the battery pack cover 2, and further improving the waterproof performance of the lithium battery pack. Through the structural arrangement of the bottom drying member, the interior of the battery pack housing 1 is dried, which plays a certain role in waterproofing and prevents the interior of the battery pack housing 1 from being in a humid state, thus affecting the normal use of the lithium battery pack. A plurality of slot holes 9 are evenly provided on the side surface of the support seat 7, which is beneficial for the moisture absorption packet 8 to dry the interior of the battery pack housing 1, and drying packets 16 are respectively provided on the left and right sides above the water isolation plate 12, which also plays a certain role in waterproofing.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pack with a waterproof structure, comprising a battery pack housing (1) and a battery pack cover (2), characterized in that: A bottom drying member is detachably arranged on the inner side of the bottom of the battery pack housing (1). Above the bottom drying member, a battery pack support is provided. The battery pack support includes a support plate (3) arranged above the bottom drying member. A plurality of partition plates (4) are evenly arranged above the support plate (3). A single lithium battery (5) is arranged between two adjacent partition plates (4). A waterproof component is arranged on the plurality of single lithium batteries (5). An annular groove (6) is formed in the upper part of the battery pack housing (1), and the battery pack cover (2) is engaged with the annular groove (6).

2. The lithium battery pack with a waterproof structure according to claim 1, characterized in that: The bottom drying member includes a support seat (7) arranged on the inner side of the bottom of the battery pack housing (1). A moisture absorption packet (8) is embedded above the support seat (7). A plurality of slot holes (9) are evenly formed in the side surface of the support seat (7).

3. A lithium battery pack with a waterproof structure according to claim 1, characterized in that: A plurality of slots (10) are evenly formed in the support plate (3). A plurality of leg groups (11) are evenly arranged on the support plate (3). The slots (10) and the leg groups (11) are located between two adjacent partition plates (4). The bottom of the corresponding single lithium battery (5) is attached to the leg group (11).

4. A lithium battery pack with a waterproof structure according to claim 1, characterized in that: The waterproof component includes a water isolation plate (12). A plurality of through slots (13) are evenly formed in the water isolation plate (12). The plurality of through slots (13) respectively correspond to the plurality of single lithium batteries (5). Inner gaskets (14) are arranged on the side walls of the through slots (13). The corresponding inner gaskets (14) are attached to the side walls of the single lithium batteries (5). An outer gasket (15) is arranged on the outer side of the water isolation plate (12). The outer gasket (15) is attached to the inner wall of the battery pack housing (1).

5. The lithium battery pack with a waterproof structure according to claim 4, wherein: Drying packets (16) are respectively arranged on the left and right sides above the water isolation plate (12).

6. A lithium battery pack with a waterproof structure according to claim 1, characterized in that: The plurality of single lithium batteries (5) are connected in series through a wire row.

7. A lithium battery pack with a waterproof structure according to claim 1, characterized in that: A through hole (17) is formed in the upper left side of the battery pack housing (1). The through hole (17) is communicated with the annular groove (6).

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