A waterproof battery pack and electrical device

Abstract

This utility model provides a waterproof battery pack and electrical device, relating to the field of battery pack technology. The waterproof battery pack includes a battery module, a housing, a first waterproof bracket, and / or a second waterproof bracket. The housing includes a cylindrical body, an upper housing, and a lower housing. The upper housing is connected to one end of the cylindrical body via threaded fasteners, and the lower housing is connected to the other end of the cylindrical body via threaded fasteners. The cylindrical body, upper housing, and lower housing together form a receiving cavity, in which the battery module is housed. The receiving cavity is filled with a first waterproof sealant. The upper housing has a first cable outlet. A first waterproof bracket is provided between the upper housing and the battery module. And / or, a second waterproof bracket is provided between the lower housing and the battery module. This waterproof battery pack can enhance the overall structural strength while ensuring the waterproof performance of the battery pack, and facilitates the installation, maintenance, and replacement of the battery module.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and more specifically, to a waterproof battery pack and electrical equipment. Background Technology

[0002] With the rapid development of new energy technologies, battery packs are widely used in electric vehicles, energy storage systems, underwater equipment, and outdoor electronic devices. However, traditional battery packs are prone to short circuits, corrosion, or performance degradation due to moisture penetration in humid, rainy, or underwater environments, seriously affecting their safety and lifespan. Therefore, the design of waterproof battery packs has become one of the key technologies for improving the reliability of battery systems.

[0003] However, current waterproof battery packs cannot simultaneously achieve both waterproof performance and impact resistance, and are prone to seal failure under mechanical impact. Utility Model Content

[0004] This utility model provides a waterproof battery pack and electrical equipment, which can enhance the overall structural connection and impact resistance while ensuring the waterproof performance of the battery pack, reduce the risk of battery pack sealing failure, and facilitate the installation of battery modules.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a waterproof battery pack, which includes:

[0007] Battery module;

[0008] The housing includes a cylindrical body, an upper housing, and a lower housing. The upper housing is connected to one end of the cylindrical body via threaded fasteners, and the lower housing is connected to the other end of the cylindrical body via threaded fasteners. The cylindrical body, the upper housing, and the lower housing together enclose a receiving cavity, in which the battery module is housed. The receiving cavity is filled with a first waterproof sealant. The upper housing has a first cable outlet.

[0009] A first waterproof bracket is provided between the upper housing and the battery module; and / or,

[0010] A second waterproof bracket is provided between the lower housing and the battery module.

[0011] In an optional embodiment, the upper housing is stepped and includes a first sidewall, a second sidewall, and a third sidewall connected at an angle along the direction close to the battery module. The first sidewall and the third sidewall are parallel to the end face of the battery module, and the second sidewall has an injection port.

[0012] In an optional embodiment, a first adhesive groove is formed between the first waterproof bracket and the cylinder, and at least a portion of the upper shell is embedded in the first adhesive groove;

[0013] And / or, a second adhesive groove is formed between the second waterproof bracket and the cylinder, and at least a portion of the lower housing is embedded in the second adhesive groove.

[0014] In an optional embodiment, the waterproof battery pack further includes an insulating sleeve that is fitted over the battery module.

[0015] In an optional embodiment, the waterproof battery pack further includes a first waterproof foam and a second waterproof foam, the first waterproof foam being connected to one end of the insulating sleeve, and the second waterproof foam being connected to the other end of the insulating sleeve; the first waterproof foam, the second waterproof foam, and the insulating sleeve together form a sealed space, and the battery module is located within the sealed space; the first waterproof foam has a second cable outlet.

[0016] In an optional embodiment, the first outlet is filled with sealant, and / or the second outlet is filled with sealant.

[0017] In an optional embodiment, the isolation sleeve is provided with limiting protrusions around its perimeter.

[0018] In an optional embodiment, the waterproof battery pack further includes insulating paper that covers the battery module and is located between the insulating sleeve and the battery module;

[0019] And / or, the waterproof battery pack further includes a reinforcing plate disposed within the insulating sleeve.

[0020] In an optional embodiment, a second waterproof sealant is filled between the lower housing and the cylinder, and the second waterproof sealant wraps around the second waterproof bracket.

[0021] An embodiment of this utility model also provides an electrical device, including the waterproof battery pack described in any of the above embodiments.

[0022] The beneficial effects of the waterproof battery pack and electrical equipment according to the embodiments of this utility model include, for example:

[0023] The waterproof battery pack includes a battery module, a housing, a first waterproof bracket, and / or a second waterproof bracket. The housing includes a cylindrical body, an upper housing, and a lower housing. The upper housing is connected to one end of the cylindrical body via threaded fasteners, and the lower housing is connected to the other end of the cylindrical body via threaded fasteners. The cylindrical body, upper housing, and lower housing together form a receiving cavity, in which the battery module is housed. The receiving cavity is filled with a first waterproof sealant. The upper housing has a first cable outlet. The cylindrical body is connected to the upper and lower housings via threaded fasteners. Its mechanical structure is stable, the connection is firm, and it has strong impact resistance, reducing the risk of battery pack seal failure. Furthermore, the upper and lower housings are detachable via the threaded fastener connection, facilitating the installation of the battery module. Filling the first receiving cavity with the first waterproof sealant can isolate the water penetration path and enhance the overall structural shock resistance. A first waterproof bracket is provided between the upper housing and the battery module; and / or, a second waterproof bracket is provided between the lower housing and the battery module. By setting up a waterproof bracket, external moisture can be further prevented from seeping into the battery module through the casing connection, thus balancing the mechanical performance and waterproof performance of the overall structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a waterproof battery pack provided in an embodiment of the present invention;

[0026] Figure 2 This is an exploded view of the waterproof battery pack provided in an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional schematic diagram of the waterproof battery pack provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of a waterproof battery pack with the upper casing removed, provided in an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the waterproof battery pack with the shell structure removed, provided in an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the upper housing provided in an embodiment of the present invention.

[0031] Icons: 1000-Waterproof battery pack; 100-Battery module; 200-Housing; 210-Cylinder; 220-Upper housing; 221-First side wall; 2211-First cable outlet; 222-Second side wall; 2221-Glue inlet; 223-Third side wall; 230-Lower housing; 240-Receiving cavity; 300-First waterproof bracket; 400-Second waterproof bracket; 510-First glue groove; 520-Second glue groove; 600-Isolation sleeve; 610-Limiting protrusion; 710-First waterproof foam; 711-Second cable outlet; 720-Second waterproof foam; 800-Insulating paper; 900-Reinforcing plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0038] With the rapid development of new energy technologies, battery packs are widely used in electric vehicles, energy storage systems, underwater equipment, and outdoor electronic devices. However, traditional battery packs are prone to short circuits, corrosion, or performance degradation due to moisture penetration in humid, rainy, or underwater environments, severely affecting their safety and lifespan. Therefore, the design of waterproof battery packs has become one of the key technologies for improving the reliability of battery systems. However, current waterproof battery packs struggle to balance waterproof performance and impact resistance, and are prone to seal failure under mechanical impact.

[0039] Based on this, please refer to Figure 1 and Figure 2 The waterproof battery pack 1000 provided in the embodiments of this utility model can effectively improve the aforementioned technical problems. This waterproof battery pack 1000 can enhance the overall structural connection's robustness and impact resistance while ensuring the battery pack's waterproof performance, reducing the risk of battery pack seal failure, and facilitating the installation of the battery module 100. When applied to electrical equipment, this waterproof battery pack 1000 has the same functions as described above, and will not be elaborated further here.

[0040] The electrical equipment in this embodiment includes a waterproof battery pack 1000. The electrical equipment can be an electric vehicle, electric boat, diving equipment, outdoor equipment, emergency rescue equipment, etc., and is not limited thereto. For example, when the electrical equipment is an electric vehicle, the electric vehicle includes a vehicle body and a waterproof battery pack 1000. The waterproof battery pack 1000 is disposed within the vehicle body and provides electrical energy to the vehicle body to enable its various functions.

[0041] Figure 1 This is a schematic diagram of the waterproof battery pack 1000 provided in an embodiment of the present invention; Figure 2 This is an exploded view of the waterproof battery pack 1000 provided in an embodiment of this utility model. (See attached image.) Figure 1 and Figure 2As shown, the waterproof battery pack 1000 provided in the embodiment of this utility model includes a battery module 100, a housing 200, a first waterproof bracket 300 and / or a second waterproof bracket 400. The housing 200 includes a cylindrical body 210, an upper housing 220 and a lower housing 230. The upper housing 220 is connected to one end of the cylindrical body 210 by a threaded fastener, and the lower housing 230 is connected to the other end of the cylindrical body 210 by a threaded fastener. The cylindrical body 210, the upper housing 220 and the lower housing 230 together form a receiving cavity 240, in which the battery module 100 is housed. The receiving cavity 240 is filled with a first waterproof sealant. The upper housing 220 has a first cable outlet 2211. The first waterproof bracket 300 is provided between the upper housing 220 and the battery module 100. And / or, the second waterproof bracket 400 is provided between the lower housing 230 and the battery module 100. That is, the first waterproof bracket 300 may be provided only between the upper housing 220 and the battery module 100, or the second waterproof bracket 400 may be provided only between the lower housing 230 and the battery module 100; or the first waterproof bracket 300 may be provided between the upper housing 220 and the battery module 100, while the second waterproof bracket 400 may be provided between the lower housing 230 and the battery module 100.

[0042] The upper housing 220 and lower housing 230 here only represent the relative positional relationship when the waterproof battery pack 1000 is in use, and do not constitute a limitation on their actual spatial position.

[0043] The cylindrical body 210 is connected to the upper housing 220 and lower housing 230 via threaded fasteners. Its mechanical structure is robust, the connection is secure, and it has strong impact resistance, reducing the risk of battery pack seal failure. Furthermore, the threaded fastener connection allows the upper housing 220 and lower housing 230 to be disassembled, facilitating the installation of the battery module 100. Filling the receiving cavity 240 with a first waterproof sealant isolates moisture penetration paths and enhances the overall structure's shock resistance. The addition of a waterproof bracket further prevents external moisture from seeping into the battery module 100 through the housing 200 connection points, thus balancing the overall structural mechanical performance and waterproofing performance.

[0044] Both the upper housing 220 and the lower housing 230 are connected to the cylindrical body 210 using threaded fasteners. This ensures connection strength and prevents the waterproof battery pack 1000 from failing under impact, collision, or vibration, thus preventing seal failure and compromising waterproof performance. Threaded connections provide rigid fixation, offering better resistance to vibration, drops, or external impacts than snap-fit ​​or adhesive connections. Furthermore, the distributed design of multiple threaded fasteners balances pressure on the housing 200, preventing localized deformation that could lead to seal failure. The threaded fasteners can be disassembled and reassembled multiple times without damaging the housing 200, reducing maintenance costs. The threaded fasteners used here are locking screws; however, bolts, screws, sealing nails, etc., can also be used. Additionally, the threaded fasteners can apply preload to tighten the waterproof bracket. This waterproof battery pack 1000 ensures good waterproof performance while also improving connection strength and reducing the risk of seal failure due to external impacts or vibrations.

[0045] To ensure waterproofing at the connection between the lower housing 230 and the cylinder 210, a second waterproof sealant is used to fill the space between them in this embodiment, and the second waterproof sealant covers the second waterproof bracket 400. To ensure good waterproof sealing, the second waterproof sealant covers the entire second waterproof bracket 400 in this embodiment. Of course, the second waterproof sealant may also only cover a portion of the second waterproof bracket 400; this is not a limitation.

[0046] In this embodiment, both the first and second waterproof sealants are polyurethane. Polyurethane itself has strong mechanical strength and adhesion. When coated on the outer layer of the battery module 100, it can effectively resist drops, compression, or vibrations during the use of the waterproof battery pack 1000, improving the mechanical safety of the entire waterproof battery pack 1000. Furthermore, polyurethane itself is waterproof, providing an additional layer of waterproof protection. Besides polyurethane, epoxy resin sealants, silicone sealants, etc., can also be used for the first and second waterproof sealants, depending on the actual application; no limitation is made here.

[0047] Figure 5 This is a structural schematic diagram of a waterproof battery pack 1000 with the shell 200 structure removed, provided in an embodiment of this utility model. For further improvements to the waterproof performance of the waterproof battery pack 1000, please refer to... Figure 2 and combined Figure 5In this embodiment, the waterproof battery pack 1000 also includes an insulating sleeve 600, which is fitted over the battery module 100. By providing the insulating sleeve 600, the battery module 100 can be protected while being waterproofed. Furthermore, the insulating sleeve 600 has good insulation properties, reducing the risk of leakage from the battery module 100. Specifically, in this embodiment, the insulating sleeve 600 is a heat-shrink tubing. The heat-shrink tubing can be heated to tightly adhere to the battery module 100, eliminating gaps and preventing the risk of partial discharge or arcing in the battery module 100. The heat-shrink tubing also has high-temperature resistance and flame-retardant properties, further improving the safety of the waterproof battery pack 1000. The heat-shrink tubing also has corrosion resistance and moisture-proof oxidation resistance, and also possesses a certain degree of waterproofing. Of course, the insulating sleeve 600 can also be replaced with waterproof insulating adhesive, waterproof film, etc., as long as the insulating sleeve 600 has insulating and waterproof properties; the specific structure and materials are not limited here.

[0048] Figure 4 This is a schematic diagram of a waterproof battery pack 1000 with the upper casing 220 removed, as provided in an embodiment of this utility model. Please continue reading. Figure 2 and combined Figure 4 The waterproof battery pack 1000 in this embodiment also includes a first waterproof foam 710 and a second waterproof foam 720. The first waterproof foam 710 is connected to one end of the insulating sleeve 600, and the second waterproof foam 720 is connected to the other end of the insulating sleeve 600. The first waterproof foam 710, the second waterproof foam 720, and the insulating sleeve 600 together form a sealed space, within which the battery module 100 is located. The first waterproof foam 710 has a second cable outlet 711. Both the first cable outlet 711 and the second cable outlet 711 are used for the output wiring harness of the battery module 100 to pass through, so as to connect to the electrical equipment. The first waterproof foam 710 and the second waterproof foam 720 respectively seal both ends of the insulating sleeve 600, forming a closed sealed space together with the insulating sleeve 600, which can effectively prevent external moisture, dust, smoke, etc. from entering the battery module 100, achieving a waterproof effect. Based on the waterproof protection of the housing 200, an additional layer of waterproof protection is added, further improving the waterproof performance of the waterproof battery pack 1000. Furthermore, the foam can absorb some vibration and impact, providing some protection for the battery module 100. For quick installation, the foam can be secured to the insulating sleeve 600 using adhesive backing or clips.

[0049] In this embodiment, the waterproof bracket is located between the waterproof foam and the upper and lower shells 230.

[0050] To ensure waterproofing at the cable outlets, in this embodiment, the first cable outlet 2211 is filled with sealant, and / or the second cable outlet 711 is filled with sealant. Sealant may be filled only at the first cable outlet 2211, only at the second cable outlet 711, or both the first and second cable outlets 2211 may be filled with sealant.

[0051] Furthermore, the waterproof battery pack 1000 in this embodiment also includes insulating paper 800, which covers the battery module 100 and is located between the isolation sleeve 600 and the battery module 100; and / or, the waterproof battery pack 1000 also includes a reinforcing plate 900, which is disposed within the isolation sleeve 600. Only insulating paper 800 or only reinforcing plate 900 may be provided; of course, both insulating paper 800 and reinforcing plate 900 may be provided, and this is not limited here. By providing insulating paper 800, the battery cell can be isolated from metal components, preventing short circuits or leakage of the battery cell. Furthermore, providing insulating paper 800 can prevent the battery cell from directly contacting the isolation sleeve 600, reducing mechanical wear during vibration or compression. By providing reinforcing plate 900, the isolation sleeve 600 can be provided with a certain supporting effect, enhancing the overall structural strength of the waterproof battery pack 1000.

[0052] Specifically, in this embodiment, the insulating paper 800 is made of barley paper, and the reinforcing plate 900 is made of fiberglass board. Barley paper has good high-temperature resistance and a smooth surface, which will not damage the battery cell. Fiberglass board itself is non-conductive and has good high-temperature resistance and fatigue resistance, making it suitable for long-term vibration environments. Of course, the insulating paper 800 can also be made of other materials, which is not limited here. The reinforcing plate 900 can also be made of other materials, as long as it serves as a supporting structure, which is not limited here.

[0053] Please see Figure 2 and combined Figure 5 In this embodiment, the isolation sleeve 600 has limiting protrusions 610 around its perimeter. That is, the outer perimeter of the isolation sleeve 600 has multiple limiting protrusions 610 to create a space for glue filling between the isolation sleeve 600 and the cylindrical body 210. Specifically, the limiting protrusions 610 in this embodiment are silicone pads. Silicone has a high elastic modulus, and when the battery module 100 is subjected to collisions, mechanical vibrations, and impacts, the silicone pads provide a certain buffering effect, protecting the battery module 100 and extending the lifespan of the waterproof battery pack 1000. Of course, the limiting protrusions 610 can also be made of other elastic materials or other rigid materials; this is not limited here.

[0054] Figure 3 This is a cross-sectional schematic diagram of the waterproof battery pack 1000 provided in an embodiment of this utility model. (See attached diagram.) Figure 3As shown, in order to improve the sealing and waterproofing of the receiving cavity 240 and the connection between the upper shell 220, the lower shell 230 and the cylinder 210, a first adhesive groove 510 is formed between the first waterproof bracket 300 and the cylinder 210 in this embodiment, and at least a portion of the upper shell 220 is embedded in the first adhesive groove 510; and / or, a second adhesive groove 520 is formed between the second waterproof bracket 400 and the cylinder 210, and at least a portion of the lower shell 230 is embedded in the second adhesive groove 520. The first adhesive groove 510 may be formed only between the first waterproof bracket 300 and the cylinder 210, or the second adhesive groove 520 may be formed only between the second waterproof bracket 400 and the cylinder 210; or the first adhesive groove 510 and the second adhesive groove 520 may be formed between the first waterproof bracket 300 and the second waterproof bracket 400 and the cylinder 210 respectively, which is not limited here. The first adhesive groove 510 and the second adhesive groove 520 need to be filled with sealant to further improve the sealing and waterproof performance of the connection between the first waterproof bracket 300 and the second waterproof bracket 400 and the housing 200.

[0055] Figure 6 This is a schematic diagram of the upper housing 220 provided in an embodiment of this utility model. Please refer to... Figure 1 and combined Figure 6 In this embodiment, the upper housing 220 is stepped. The upper housing 220 includes a first sidewall 221, a second sidewall 222, and a third sidewall 223 connected at an angle along a direction close to the battery module 100. The first sidewall 221 and the third sidewall 223 are parallel to the end face of the battery module 100. The second sidewall 222 has a glue-filling port 2221. That is, the glue-filling port 2221 is not directly facing the battery module 100. Directly filling the battery module 100 with glue, under high pressure, may damage the battery module 100 due to the impact force of the glue. This design buffers the glue flow rate and disperses pressure. Furthermore, this design of the glue-filling port 2221 also allows for more uniform glue distribution. Specifically, in this embodiment, the first sidewall 221 and the second sidewall 222 are vertically connected. Of course, the first sidewall 221 and the second sidewall 222 can also be connected at an acute or obtuse angle, as long as the glue inlet 2221 is not directly above the battery module 100. The connection angle between the first sidewall 221 and the second sidewall 222 is not limited here. In this embodiment, the upper shell 220 is integrally formed. Of course, the first sidewall 221, the second sidewall 222, and the third sidewall 223 can also be formed separately and connected by welding or other methods, which is not limited here.

[0056] The installation process of a waterproof battery pack 1000 provided in this embodiment is as follows:

[0057] First, the battery cells are transferred into the battery bracket and secured with screws or other threaded fasteners. Then, the busbar is soldered to the positive and negative terminals of the battery cells. Next, the BMS protection board is soldered to the tabs extending from the busbar. The BMS board has output wiring harnesses, thus assembling the battery module 100. Then, an isolation sleeve 600 is assembled around the battery module 100, and waterproof foam is attached to both ends of the isolation sleeve 600. The output wiring harness exits from the second outlet 711, and sealant is applied at the second outlet 711 to complete the first-stage waterproof seal. Next, the lower housing 230, the second waterproof bracket 400, and the cylindrical body 210 are assembled. After installation, the second waterproof bracket 400 needs to be sealed with waterproofing. The lower housing 230 is connected to the cylindrical body 210 using threaded fasteners. Second waterproof sealant is poured into the cylindrical body 210 after the lower housing 230 is assembled, ensuring the sealant covers the second waterproof bracket 400. After completion, the battery module 100, which has achieved primary waterproofing, is installed into the cylinder 210, thus completing the secondary waterproofing seal. Finally, the first waterproof bracket 300 and the upper housing 220 are installed. After the upper housing 220 is installed, the first waterproof sealant is poured into the second receiving cavity 240 and the receiving cavity 240 through the glue filling port 2221. The first waterproof sealant covers the first waterproof bracket 300, and then the glue filling port 2221 is sealed to complete the tertiary waterproofing seal.

[0058] In summary, the waterproof battery pack 1000 includes a battery module 100, a housing 200, a first waterproof bracket 300, and / or a second waterproof bracket 400. The housing 200 includes a cylindrical body 210, an upper housing 220, and a lower housing 230. The upper housing 220 is connected to one end of the cylindrical body 210 via threaded fasteners, and the lower housing 230 is connected to the other end of the cylindrical body 210 via threaded fasteners. The cylindrical body 210, the upper housing 220, and the lower housing 230 together form a receiving cavity 240, in which the battery module 100 is housed. The receiving cavity 240 is filled with a first waterproof sealant. The upper housing 220 has a first cable outlet 2211. The first waterproof bracket 300 is disposed between the upper housing 220 and the battery module 100. And / or, the second waterproof bracket 400 is disposed between the lower housing 230 and the battery module 100. The cylindrical body 210 is connected to the upper housing 220 and the lower housing 230 via threaded fasteners, providing a robust mechanical structure and strong impact resistance. Furthermore, the threaded fastener connection allows for the detachment of the upper housing 220 and the lower housing 230, facilitating the installation, maintenance, and replacement of the battery module 100. Filling the first receiving cavity with a first waterproof sealant effectively isolates moisture penetration paths and enhances the overall structural shock resistance. The addition of a waterproof bracket further prevents external moisture from seeping into the battery module 100 through the connection points of the housing 200.

[0059] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A waterproof battery pack, characterized in that, include: Battery module (100); The housing (200) includes a cylindrical body (210), an upper housing (220), and a lower housing (230). The upper housing (220) is connected to one end of the cylindrical body (210) by a threaded fastener, and the lower housing (230) is connected to the other end of the cylindrical body (210) by a threaded fastener. The cylindrical body (210), the upper housing (220), and the lower housing (230) together form a receiving cavity (240), in which the battery module (100) is housed. The receiving cavity (240) is filled with a first waterproof sealant. The upper housing (220) has a first cable outlet (2211). A first waterproof bracket (300) is provided between the upper housing (220) and the battery module (100); and / or, A second waterproof bracket (400) is provided between the lower housing (230) and the battery module (100).

2. The waterproof battery pack according to claim 1, characterized in that, The upper housing (220) is stepped and includes a first sidewall (221), a second sidewall (222) and a third sidewall (223) connected at an angle along the direction close to the battery module (100). The first sidewall (221) and the third sidewall (223) are parallel to the end face of the battery module (100), and the second sidewall (222) has a potting port (2221).

3. The waterproof battery pack according to claim 1, characterized in that, A first adhesive groove (510) is formed between the first waterproof bracket (300) and the cylinder (210), and at least a portion of the upper shell (220) is embedded in the first adhesive groove (510); And / or, a second adhesive groove (520) is formed between the second waterproof bracket (400) and the cylinder (210), and at least a portion of the lower housing (230) is embedded in the second adhesive groove (520).

4. The waterproof battery pack according to claim 1, characterized in that, The waterproof battery pack (1000) also includes an isolation sleeve (600) which is fitted over the battery module (100).

5. The waterproof battery pack according to claim 4, characterized in that, The waterproof battery pack (1000) further includes a first waterproof foam (710) and a second waterproof foam (720). The first waterproof foam (710) is connected to one end of the isolation sleeve (600), and the second waterproof foam (720) is connected to the other end of the isolation sleeve (600). The first waterproof foam (710), the second waterproof foam (720), and the isolation sleeve (600) together form a sealed space, and the battery module (100) is located in the sealed space. The first waterproof foam (710) has a second outlet (711).

6. The waterproof battery pack according to claim 5, characterized in that, The first outlet (2211) is filled with sealant, and / or the second outlet (711) is filled with sealant.

7. The waterproof battery pack according to claim 4, characterized in that, The isolation sleeve (600) is provided with limiting protrusions (610) around its perimeter.

8. The waterproof battery pack according to claim 4, characterized in that, The waterproof battery pack (1000) also includes insulating paper (800), which covers the battery module (100) and is located between the isolation sleeve (600) and the battery module (100); And / or, the waterproof battery pack (1000) further includes a reinforcing plate (900) disposed within the insulating sleeve (600).

9. The waterproof battery pack according to any one of claims 1-8, characterized in that, A second waterproof sealant is filled between the lower housing (230) and the cylinder (210), and the second waterproof sealant wraps around the second waterproof bracket (400).

10. An electrical appliance, characterized in that, Includes the waterproof battery pack (1000) as described in any one of claims 1-9.

Images