Waterproof structure of battery pack

Abstract

The utility model belongs to the technical field of battery packs, and discloses a battery pack waterproof structure which comprises a shell, a pack and a waterproof assembly, the shell comprises a shell body, an upper cover and a lower cover, the two ends of the shell body are open, the upper cover and the lower cover are connected to the openings in the two ends of the shell body respectively, and the shell body, the upper cover and the lower cover are matched to form a mounting cavity. The pack is placed in the mounting cavity and located between the upper cover and the lower cover, the waterproof assembly comprises an upper waterproof unit and a lower waterproof unit, the upper waterproof unit comprises an upper end cover and an upper waterproof ring, and the lower waterproof unit comprises a lower end cover and a lower waterproof ring; the upper waterproof ring is sleeved on the upper end cover in a sealing manner, part of the upper waterproof ring is embedded in the upper cover, and the other part of the upper waterproof ring is sealed at the opening at one end of the shell, so that a waterproof structure is formed, and the waterproof performance is improved; the lower waterproof ring is sleeved on the lower end cover in a sealing manner, and part of the lower waterproof ring is embedded in the lower cover; and the other part of the lower waterproof ring is sealed at the opening at the other end of the shell to form another waterproof structure, so that the waterproof performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a waterproof structure of a battery pack. Background Art

[0002] As energy shortages and environmental pollution caused by traditional cars become increasingly prominent, new energy vehicles, a new type of green transportation, have emerged and become the "new favorite" of major automobile manufacturers. In new energy electric vehicles, the battery pack is its core component. The sealing of the battery pack directly affects the safety of the battery system, and therefore also affects the safety of the entire vehicle.

[0003] Currently, the waterproofing methods for batteries with XLR ports and other normal batteries on the market generally include potting, applying sealants, on-site rubber foaming, etc. However, these traditional methods have many disadvantages and defects, such as the battery pack cannot be repaired or the repair cost is high, the production process is complicated, the waterproof sealing performance is insufficient, and it is easy to age.

[0004] Therefore, a device is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a battery pack waterproof structure with a high waterproof level and capable of isolating the pack.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The battery pack waterproof structure includes:

[0008] The housing comprises a shell, an upper cover and a lower cover, both ends of the shell are open, and the upper cover and the lower cover are respectively connected to the two end openings of the shell;

[0009] pack, the shell, the upper cover and the lower cover cooperate to form an installation cavity, the pack is placed in the installation cavity and located between the upper cover and the lower cover;

[0010] A waterproof component, the waterproof component includes an upper waterproof unit and a lower waterproof unit, the upper waterproof unit includes an upper end cover and an upper waterproof ring, the upper waterproof ring sealing sleeve is arranged on the upper end cover, and a part of the upper waterproof ring is embedded in the upper cover, and the remaining part of the upper waterproof ring is sealed at one end opening of the shell, the lower waterproof unit includes a lower end cover and a lower waterproof ring, the lower waterproof ring sealing sleeve is arranged on the lower end cover, and a part of the lower waterproof ring is embedded in the lower cover, and the remaining part of the lower waterproof ring is sealed at the other end opening of the shell.

[0011] Preferably, the upper waterproof ring includes a first part and a second part, the first part is sealed at one end opening of the shell, the second part is embedded in the upper cover, and the first part is provided with a first protrusion, and the first protrusion is circumferentially abutted against the inner wall of the shell, and the lower waterproof ring includes a third part and a fourth part, the third part is sealed at the other end opening of the shell, the fourth part is embedded in the lower cover, and the third part is provided with a second protrusion, and the second protrusion is circumferentially abutted against the inner wall of the shell.

[0012] Preferably, there are a plurality of first protrusions, and the plurality of first protrusions are arranged at intervals along the width direction of the upper waterproof ring; there are a plurality of second protrusions, and the plurality of second protrusions are arranged at intervals along the width direction of the lower waterproof ring.

[0013] Preferably, both ends of the shell are provided with connecting holes along its height direction, the upper waterproof ring also includes a first connecting portion, the first connecting portion is located between the first portion and the second portion, and the first connecting portion is provided with a first through hole, and the connecting member can pass through the first through hole and the connecting hole in sequence to connect the upper cover and the shell, and the lower waterproof ring also includes a second connecting portion, the second connecting portion is located between the third portion and the fourth portion, and the second connecting portion is provided with a second through hole, and the connecting member can pass through the connecting hole and the second through hole in sequence to connect the shell and the lower cover.

[0014] Preferably, the shell includes a protrusion, which is arranged on the inner side of the shell along the height direction of the shell, and the connecting holes are provided at both ends of the protrusion.

[0015] Preferably, an upper accommodating groove is provided at the end of the upper cover, the second part and the first connecting part are both embedded in the upper accommodating groove, the upper cover is circumferentially abutted against one end of the shell, and a lower accommodating groove is provided at the end of the lower cover, the fourth part and the second connecting part are both embedded in the lower accommodating groove, and the lower cover is circumferentially abutted against the other end of the shell.

[0016] Preferably, the shell is provided with a track groove, the track groove is provided with a sliding and detachable track piece, the lower cover is provided with a track opening for the track piece to slide into the track groove, and the lower cover is provided with a limit groove for limiting the end point of the sliding position of the track piece.

[0017] Preferably, the upper cover is provided with a mounting hole, and the mounting hole is provided with a XLR interface.

[0018] Preferably, the upper waterproof ring and the lower waterproof ring are both made of silicone material.

[0019] Preferably, the connecting member is a bolt.

[0020] Beneficial effect: The utility model provides a battery pack waterproof structure, including a shell, a pack and a waterproof component, the shell includes a shell, an upper cover and a lower cover, both ends of the shell are open, the upper cover and the lower cover are respectively connected to the two end openings of the shell, the shell, the upper cover and the lower cover cooperate to form an installation cavity, the pack is placed in the installation cavity and is located between the upper cover and the lower cover, the waterproof component includes an upper waterproof unit and a lower waterproof unit, the upper waterproof unit includes an upper end cover and an upper waterproof ring, the lower waterproof unit includes a lower end cover and a lower waterproof ring; by arranging the upper waterproof ring sealing sleeve on the upper end cover, part of the upper waterproof ring is embedded in the upper cover, and the remaining part of the upper waterproof ring is sealed. The ring is sealed at one end opening of the shell, and then the pack inside the shell and the upper cover are separated by the upper end cover, the gap between the upper end cover and the shell and the upper cover is blocked by the upper waterproof ring, and a waterproof structure is formed by the upper end cover and the upper waterproof ring to improve the waterproof performance, the lower waterproof ring sealing sleeve is arranged on the lower end cover, part of the lower waterproof ring is embedded in the lower cover, and the remaining part of the lower waterproof ring is sealed at the other end opening of the shell, and then the pack inside the shell and the lower cover are separated by the lower end cover, the gap between the lower end cover and the shell and the lower cover is blocked by the lower waterproof ring, and another waterproof structure is formed by the lower end cover and the lower waterproof ring to improve the waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the waterproof structure of the battery pack provided by the embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a housing provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the upper cover provided by an embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the lower cover provided by an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the combination of the upper end cover and the upper waterproof ring provided in an embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the upper waterproof ring provided in an embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the combination of the lower end cover and the lower waterproof ring provided in an embodiment of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the lower waterproof ring provided in an embodiment of the utility model.

[0029] In the figure:

[0030] 11. Shell; 111. Raised portion; 1111. Connecting hole; 112. Track groove; 12. Upper cover; 121. XLR interface; 122. Track opening; 123. Upper receiving groove; 13. Lower cover; 131. Limiting groove; 132. Lower receiving groove; 2. pack; 31. Upper end cover; 32. Upper waterproof ring; 3211. First raised portion; 322. Second portion; 323. First connecting portion; 3231. First through hole; 33. Lower end cover; 34. Lower waterproof ring; 3411. Second raised portion; 342. Fourth portion; 343. Second connecting portion; 3431. Second through hole. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] This embodiment discloses a battery pack waterproof structure, which can isolate the pack from the outside world and improve the waterproof level of the battery pack. It also has a simple internal structure and is easy to install.

[0036] like Figure 1 As shown, the battery pack waterproof structure includes a shell, pack2 and a waterproof component. Pack2 is placed inside the shell, and the waterproof component is arranged inside the shell to isolate pack2 from the outside world to ensure waterproof performance. The structure is simple and easy to maintain.

[0037] Specifically, Figure 1 As shown, the shell includes a shell 11, an upper cover 12 and a lower cover 13, wherein both ends of the shell 11 are open, the upper cover 12 and the lower cover 13 are respectively connected to the two end openings of the shell 11, the shell 11, the upper cover 12 and the lower cover 13 cooperate to form an installation cavity, and pack2 is placed in the installation cavity. Preferably, pack2 is located between the upper cover 12 and the lower cover 13, so that the waterproof component can isolate pack2.

[0038] Optionally, both ends of the housing 11 are provided with connection holes 1111 along the height direction thereof, and a connection piece is used to penetrate the connection holes 1111 at one end of the upper cover 12 and the housing 11 to fix the upper cover 12 and the housing 11, and a connection piece is used to penetrate the connection holes 1111 at the other end of the lower cover 13 and the housing 11 to fix the lower cover 13 and the housing 11. Further preferably, the connection piece is a bolt to facilitate disassembly and maintenance. Figure 2 As shown, in this embodiment, the housing 11 includes a protrusion 111, which is arranged on the inner side of the housing 11 along the height direction thereof, and both ends of the protrusion 111 are provided with the above-mentioned connection holes 1111. Optionally, a plurality of protrusions 111 are provided on the inner side of the housing 11, and the plurality of protrusions 111 are arranged circumferentially to improve the connection strength between the upper cover 12, the lower cover 13 and the housing 11.

[0039] In order to facilitate charging of the pack 2, the present embodiment is further provided with a XLR interface 121. Specifically, the upper cover 12 is provided with a mounting hole, and the XLR interface 121 is installed in the mounting hole.

[0040] Furthermore, if Figure 2-Figure 4 As shown, the shell 11 is provided with a track groove 112, and a sliding and detachable track piece is provided in the track groove 112. The track piece is installed on the fixing seat of the car / electric vehicle, and the upper cover 12 is provided with a track opening 122 for the track piece to slide into the track groove 112. The lower cover 13 is provided with a limiting groove 131 for limiting the end point of the sliding position of the track piece, so as to fix the battery pack.

[0041] Specifically, the waterproof component includes an upper waterproof unit, which is arranged between the shell 11 and the upper cover 12, and the upper waterproof unit includes an upper end cover 31 and an upper waterproof ring 32. The upper waterproof ring 32 is sealed on the upper end cover 31, and a part of the upper waterproof ring 32 is embedded in the upper cover 12, and the remaining part of the upper waterproof ring 32 is sealed at one end opening of the shell 11, and then the pack2 inside the shell 11 and the upper cover 12 are separated by the upper end cover 31, and the gap between the upper end cover 31 and the shell 11 and the upper cover 12 is blocked by the upper waterproof ring 32, and a waterproof structure is formed by the upper end cover 31 and the upper waterproof ring 32 to improve the waterproof performance.

[0042] For example, Figure 1 , Figure 5 and Figure 6 As shown, the upper waterproof ring 32 includes a first part and a second part 322, the first part is sealed at one end opening of the shell 11, and the second part 322 is embedded in the upper cover 12, and in this embodiment, a first protrusion 3211 is provided on the first part, and the first protrusion 3211 is circumferentially abutted against the inner wall of the shell 11. During the assembly process, the first protrusion 3211 will undergo elastic deformation under pressure, thereby filling the gap between the first protrusion 3211 and the shell 11 and generating a rebound force, thereby improving the waterproof performance of the battery pack. Preferably, there are multiple first protrusions 3211, and the multiple first protrusions 3211 are spaced apart along the width direction of the upper waterproof ring 32, so as to further improve the waterproof performance of the battery pack.

[0043] Specifically, the upper waterproof ring 32 and the first protrusion 3211 are made of silicone material, which has stable performance and excellent resilience.

[0044] Optionally, the upper waterproof ring 32 further includes a first connecting portion 323, the first connecting portion 323 is located between the first portion and the second portion 322, and the first connecting portion 323 is provided with a first through hole 3231, and the connecting member can sequentially pass through the upper cover 12, the first through hole 3231 and the connecting hole 1111 at one end of the protruding portion 111 to connect the upper cover 12, the upper waterproof ring 32 and the housing 11, thereby improving the stability of the upper waterproof ring 32 and preventing the upper waterproof ring 32 from shifting due to shaking. Preferably, a plurality of first through holes 3231 are provided at intervals, and the first through holes 3231 correspond one-to-one to the connecting holes 1111 at one end of the protruding portion 111.

[0045] Adaptively, the first protrusion 3211 , the second portion 322 and the upper end cover 31 are all concave inwardly corresponding to the first through hole 3231 in a direction away from the housing 11 to avoid the connecting member.

[0046] like Figure 3 As shown, an upper receiving groove 123 is provided at the end of the upper cover 12, and the second portion 322 and the first connecting portion 323 are both embedded in the upper receiving groove 123, so that the upper cover 12 can circumferentially abut against one end of the shell 11 to ensure that the surface of the shell is flat.

[0047] Specifically, the waterproof component also includes a lower waterproof unit, which is arranged between the shell 11 and the lower cover 13, and the lower waterproof unit includes a lower end cover 33 and a lower waterproof ring 34. The lower waterproof ring 34 is sealed on the lower end cover 33, and a part of the lower waterproof ring 34 is embedded in the lower cover 13. The remaining part of the lower waterproof ring 34 is sealed at the other end opening of the shell 11, and then the pack2 inside the shell 11 and the lower cover 13 are separated by the lower end cover 33, and the gap between the lower end cover 33 and the shell 11 and the lower cover 13 is blocked by the lower waterproof ring 34. The lower end cover 33 and the lower waterproof ring 34 are used to form another waterproof structure to improve the waterproof performance.

[0048] For example, Figure 1 , Figure 7 and Figure 8 As shown, the lower waterproof ring 34 includes a third part and a fourth part 342, the third part is sealed to the other end opening of the shell 11, and the fourth part 342 is embedded in the lower cover 13, and in this embodiment, a second protrusion 3411 is provided on the third part, and the second protrusion 3411 is circumferentially abutted against the inner wall of the shell 11. During the assembly process, the second protrusion 3411 will undergo elastic deformation under pressure, thereby filling the gap between the second protrusion 3411 and the shell 11 and generating a rebound force, thereby improving the waterproof performance of the battery pack. Preferably, there are multiple second protrusions 3411, and the multiple second protrusions 3411 are spaced apart along the width direction of the lower waterproof ring 34, further improving the waterproof performance of the battery pack.

[0049] Specifically, the lower waterproof ring 34 and the second protrusion 3411 are made of silicone material, which has stable performance and excellent resilience.

[0050] Optionally, the lower waterproof ring 34 further includes a second connecting portion 343, the first connecting portion 323 is located between the third portion and the fourth portion 342, and the second connecting portion 343 is provided with a second through hole 3431, and the connecting member can sequentially pass through the lower cover 13, the second through hole 3431 and the connecting hole 1111 at the other end of the housing 11 to connect the lower cover 13, the lower waterproof ring 34 and the housing 11, thereby improving the stability of the lower waterproof ring 34 and preventing the lower waterproof ring 34 from shifting due to shaking. Preferably, a plurality of second through holes 3431 are provided at intervals, and the second through holes 3431 correspond one-to-one to the connecting holes 1111 at the other end of the protruding portion 111.

[0051] Adaptively, the second protrusion 3411 , the fourth portion 342 and the lower end cover 33 are all concave inwardly corresponding to the second through hole 3431 in a direction away from the housing 11 to avoid the connecting member.

[0052] like Figure 4As shown, a lower receiving groove 132 is provided at the end of the lower cover 13, and the fourth portion 342 and the second connecting portion 343 are both embedded in the lower receiving groove 132, so that the lower cover 13 can circumferentially abut against the other end of the shell 11 to ensure that the surface of the shell is flat.

[0053] When assembling the waterproof structure of the battery pack provided in this embodiment, firstly, the upper waterproof ring 32 is sleeved on the upper end cover 31, and then the pack2 is placed inside the shell 11, and further, the combination of the upper waterproof ring 32 and the upper end cover 31 is squeezed and placed into the opening at one end of the shell 11, so that the first protrusion 3211 circumferentially abuts against the inner wall of the shell 11, and then the upper cover 12 is further placed on one end of the shell 11, and the second part 322 and the first connecting part 323 are both embedded in the upper receiving groove 123, and the upper cover 12 circumferentially abuts against one end of the shell 11, and the upper cover 12 is fixed with a connecting piece. The upper waterproof ring 32 and the shell 11; further, the lower waterproof ring 34 is sleeved on the lower end cover 33, and the combination of the lower waterproof ring 34 and the lower end cover 33 is further squeezed into the other end opening of the shell 11, so that the second protrusion 3411 circumferentially abuts against the inner wall of the shell 11, and then the lower cover 13 is further placed on the other end of the shell 11, and the fourth part 342 and the second connecting part 343 are both embedded in the lower accommodating groove 132, and the lower cover 13 circumferentially abuts against the other end of the shell 11, and the lower cover 13, the lower waterproof ring 34 and the shell 11 are fixed with a connecting piece, and the assembly is completed.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Battery pack waterproof structure, It is characterized in that include: A shell, the shell comprising a shell (11), an upper cover (12) and a lower cover (13), both ends of the shell (11) are open, and the upper cover (12) and the lower cover (13) are respectively connected to the openings at both ends of the shell (11); pack (2), the shell (11), the upper cover (12) and the lower cover (13) cooperate to form an installation cavity, and the pack (2) is placed in the installation cavity and located between the upper cover (12) and the lower cover (13); A waterproof component, the waterproof component comprising an upper waterproof unit and a lower waterproof unit, the upper waterproof unit comprising an upper end cover (31) and an upper waterproof ring (32), the upper waterproof ring (32) is sealingly sleeved on the upper end cover (31), and a portion of the upper waterproof ring (32) is embedded in the upper cover (12), and the remaining portion of the upper waterproof ring (32) is sealed to an opening at one end of the shell (11), and the lower waterproof unit comprises a lower end cover (33) and a lower waterproof ring (34), the lower waterproof ring (34) is sealingly sleeved on the lower end cover (33), and a portion of the lower waterproof ring (34) is embedded in the lower cover (13), and the remaining portion of the lower waterproof ring (34) is sealed to the other opening at the shell (11).

2. The battery pack waterproof structure according to claim 1, It is characterized in that The upper waterproof ring (32) includes a first part and a second part (322), wherein the first part is sealed at one end opening of the shell (11), and the second part (322) is embedded in the upper cover (12), and the first part is provided with a first protrusion (3211), and the first protrusion (3211) is circumferentially abutted against the inner wall of the shell (11); the lower waterproof ring (34) includes a third part and a fourth part (342), wherein the third part is sealed at the other end opening of the shell (11), and the fourth part (342) is embedded in the lower cover (13), and the third part is provided with a second protrusion (3411), and the second protrusion (3411) is circumferentially abutted against the inner wall of the shell (11).

3. The battery pack waterproof structure according to claim 2, It is characterized in that There are a plurality of first protrusions (3211), and the plurality of first protrusions (3211) are arranged at intervals along the width direction of the upper waterproof ring (32); there are a plurality of second protrusions (3411), and the plurality of second protrusions (3411) are arranged at intervals along the width direction of the lower waterproof ring (34).

4. The battery pack waterproof structure according to claim 2, It is characterized in that Both ends of the shell (11) are provided with connection holes (1111) along the height direction thereof; the upper waterproof ring (32) further comprises a first connection portion (323); the first connection portion (323) is located between the first portion and the second portion (322); and the first connection portion (323) is provided with a first through hole (3231); a connecting member can sequentially pass through the first through hole (3231) and the connection hole (1111) to connect the upper cover (12) and the shell (11); the lower waterproof ring (34) further comprises a second connection portion (343); the second connection portion (343) is located between the third portion and the fourth portion (342); and the second connection portion (343) is provided with a second through hole (3431); and the connecting member can sequentially pass through the connection hole (1111) and the second through hole (3431) to connect the shell (11) and the lower cover (13).

5. The battery pack waterproof structure according to claim 4, It is characterized in that The shell (11) comprises a protruding portion (111), the protruding portion (111) being arranged on the inner side of the shell (11) along the height direction of the shell (11), and the connecting holes (1111) are arranged at both ends of the protruding portion (111).

6. The battery pack waterproof structure according to claim 4, It is characterized in that An upper receiving groove (123) is provided at the end of the upper cover (12), the second part (322) and the first connecting part (323) are both embedded in the upper receiving groove (123), the upper cover (12) is circumferentially abutted against one end of the shell (11), and a lower receiving groove (132) is provided at the end of the lower cover (13), the fourth part (342) and the second connecting part (343) are both embedded in the lower receiving groove (132), and the lower cover (13) is circumferentially abutted against the other end of the shell (11).

7. The battery pack waterproof structure according to any one of claims 1 to 6, It is characterized in that The housing (11) is provided with a track groove (112), the track groove (112) is provided with a sliding and detachable track piece, the lower cover (13) is provided with a track opening (122) for the track piece to slide into the track groove (112), and the lower cover (13) is provided with a limiting groove (131) for limiting the end point of the sliding position of the track piece.

8. The battery pack waterproof structure according to any one of claims 1 to 6, It is characterized in that The upper cover (12) is provided with a mounting hole, and the mounting hole is provided with a XLR interface (121).

9. The battery pack waterproof structure according to any one of claims 1 to 6, It is characterized in that The upper waterproof ring (32) and the lower waterproof ring (34) are both made of silicone material.

10. The battery pack waterproof structure according to any one of claims 4 to 6, It is characterized in that The connecting piece is a bolt.

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