Battery waterproof structure and vehicle

Abstract

The embodiment of the utility model provides a battery waterproof structure and a vehicle, relates to the technical field of power batteries, and is used for solving the technical problems that waterproof glue of a waterproof structure is easy to crack, the waterproof structure is easy to separate, water enters a battery module, and the stability and reliability of a battery are poorer. The shell is barrel-shaped; the outer edge of the upper cover is connected with the shell through welding or hot pressing; the battery module is located in the shell, and the upper cover is arranged on the battery module in a covering mode.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a waterproof battery structure and vehicle. Background Technology

[0002] In recent years, my country's vehicle industry has developed rapidly, and electric vehicles have become an important means of transportation in modern life. Among them, electric vehicles such as mopeds, scooters, and balance bikes have increasingly higher requirements for the performance and reliability of their internal batteries.

[0003] In daily life, people frequently use electric vehicles such as e-bikes, scooters, and balance bikes. The decline or failure of the electrical performance of the batteries in most of these electric vehicles, and even the occurrence of heat damage, is mainly due to the failure of the battery's waterproof structure. Currently, the commonly used waterproof structure for batteries is sealed with adhesive.

[0004] However, the waterproof adhesive in waterproof structures is prone to cracking and the waterproof structure itself is easily separated, leading to water ingress into the battery module and poor battery stability and reliability. Therefore, this application proposes a waterproof battery structure and a vehicle thereof. Utility Model Content

[0005] This application provides a waterproof battery structure and vehicle to solve the technical problems of easy cracking of the waterproof adhesive in the waterproof structure, easy separation of the waterproof structure, water ingress into the battery module, and poor stability and reliability of the battery.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] In a first aspect, embodiments of this application provide a waterproof battery structure, including:

[0008] The outer casing includes a top cover and a housing; the housing is barrel-shaped; the outer edge of the top cover is welded or hot-pressed to the housing;

[0009] A battery module, the battery module being located inside the housing, and the top cover being disposed on the battery module.

[0010] In some embodiments of this application, the top cover and the housing are sealed together by an adhesive layer.

[0011] In some embodiments of this application, the housing is a blow-molded housing formed by a blow molding process, or the housing is an injection-molded housing formed by an injection molding process.

[0012] In some embodiments of this application, when the outer edge of the top cover is welded to the housing, the outer edge of the top cover has welding ribs, the welding ribs extend circumferentially along the top cover, and the welding ribs are arranged in a circumferential manner;

[0013] The top cover is welded to the inner surface of the shell via the welding ribs.

[0014] In some embodiments of this application, the end of the welding rib away from the battery module is located inside the housing;

[0015] The upper cover has an upper cover body, and the welding rib is connected to the upper cover body. The welding rib is connected to the side circumferential surface of the upper cover body.

[0016] The inner surfaces of the welding rib, the upper cover, and the shell form a first groove; a first adhesive layer is provided in the first groove;

[0017] The first adhesive layer is used to seal the top cover to the housing.

[0018] In some embodiments of this application, a first gap is provided between the upper cover and the inner surface of the housing, and the first gap is located on the side of the welding rib away from the battery module;

[0019] The first groove is annular, and the first adhesive layer is annular.

[0020] In some embodiments of this application, the welding rib protrudes from the side of the upper cover facing the housing.

[0021] In some embodiments of this application, the side of the welding rib facing the battery module is attached to the battery module.

[0022] In some embodiments of this application, when the outer edge of the top cover is hot-pressed to the housing, the outer edge of the top cover has a hot-pressing plate; the hot-pressing plate extends circumferentially along the top cover, and the hot-pressing plate is arranged in a circumferential manner;

[0023] The top cover is heat-pressed to the inner surface of the housing via the hot-press plate.

[0024] In some embodiments of this application, a third groove is included for inserting a heat-pressing support plate;

[0025] The upper cover has an upper cover body, and the hot press plate is connected to the upper cover body. The hot press plate is connected to the side circumferential surface of the upper cover body.

[0026] The hot-press plate and the upper cover form the third groove on the side surface away from the housing. When the hot-press plate and the inner surface of the housing are hot-pressed together, the hot-press support plate is inserted into the third groove to support the hot-press plate.

[0027] In some embodiments of this application, the end of the hot press plate away from the battery module is located inside the housing;

[0028] The inner surfaces of the hot press plate, the upper cover and the shell form a first groove, and a first adhesive layer is provided in the first groove;

[0029] The first adhesive layer is used to seal the top cover to the housing.

[0030] In some embodiments of this application, the upper cover and the inner surface of the housing have a first gap, the first gap being located on the side of the hot press plate away from the battery module;

[0031] The first groove is annular, and the first adhesive layer is annular.

[0032] In some embodiments of this application, the side of the hot press plate facing the battery module is attached to the battery module.

[0033] In some embodiments of this application, the battery waterproof structure includes:

[0034] The wire is electrically connected to the battery module.

[0035] In some embodiments of this application, the upper cover has a second groove for the wire to pass through;

[0036] One end of the wire passes through the second groove and is electrically connected to the battery module.

[0037] In some embodiments of this application, a second adhesive layer is provided between the second groove and the wire;

[0038] The second adhesive layer is used to seal the gap between the wire and the second groove.

[0039] In some embodiments of this application, the first adhesive layer surrounds the outside of the wire, or the first adhesive layer seals the gap between the wire and the inner surface of the housing.

[0040] In some embodiments of this application, the first adhesive layer and the second adhesive layer are glue.

[0041] In some embodiments of this application, a receiving cavity is provided between the top cover and the housing;

[0042] The battery module is located within the receiving cavity.

[0043] Secondly, embodiments of this application provide a vehicle that includes the battery waterproof structure described in the above embodiments.

[0044] The waterproof battery structure and vehicle provided in this application have the following technical advantages:

[0045] The battery waterproof structure includes an outer shell and a battery module. The outer shell includes a top cover and a housing. The battery module is located inside the housing, and the top cover is placed on the battery module. The housing is barrel-shaped. The outer edge of the top cover is welded or hot-pressed to the housing, forming a welded or hot-pressed layer between the top cover and the housing. Both the welded and hot-pressed layers have a certain degree of sealing and waterproofing, which can significantly improve the waterproof effect of the battery waterproof structure. Furthermore, the welded or hot-pressed connection between the outer edge of the top cover and the housing can fix the top cover and the housing together. The connection has good strength and can prevent the adhesive structure from cracking during drops and vibrations, ensuring that the top cover and the housing will not separate during drops and vibrations. This improves the stability and reliability of the battery waterproof structure. In addition, the electromagnetic waterproof structure has high space utilization. Cost savings; while the top cover and shell are welded or hot-pressed together, an adhesive layer seals the connection between them. This welding or hot-pressing ensures relative stability between the top cover and shell, preventing movement. The adhesive layer at the connection point is also protected from deformation and tearing, reducing the risk of damage and further enhancing the waterproof performance of the battery structure. The connection method is simple, reducing assembly steps, increasing production efficiency, and facilitating maintenance. The shell is either blow-molded or injection-molded, making it less prone to breakage and preventing damage to the waterproof structure, thus improving its reliability and stability. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of a waterproof battery structure provided in one embodiment of this application;

[0048] Figure 2 This is an exploded view of a battery waterproof structure provided in an embodiment of this application;

[0049] Figure 3 This is a partial cross-sectional view of a battery waterproof structure provided in an embodiment of this application;

[0050] Figure 4 A front view of the top cover of a waterproof battery structure provided in an embodiment of this application;

[0051] Figure 5 This is a schematic diagram of the structure of the top cover of a battery waterproof structure provided in one embodiment of this application;

[0052] Figure 6 This is a partial cross-sectional view from another perspective of a battery waterproof structure provided in one embodiment of this application;

[0053] Figure 7 This is a partial cross-sectional view from another perspective of a battery waterproof structure provided in one embodiment of this application;

[0054] Figure 8 This is a partial exploded view of the waterproof battery structure provided in one embodiment of this application.

[0055] Explanation of reference numerals in the attached figures:

[0056] 100: Waterproof battery structure;

[0057] 200: Outer casing;

[0058] 210: Top cover; 211: Top cover body; 220: Shell; 221: Shell cavity; 222: Shell opening; 230: Welding rib; 240: First groove; 241: First adhesive layer; 250: Second groove; 251: Second adhesive layer; 260: Receiving cavity; 270: Third groove; 280: Hot press plate;

[0059] 300: Battery module;

[0060] 400: Wire. Detailed Implementation

[0061] As described in the background section, in related technologies, the commonly used waterproof structure for batteries is mainly sealed with adhesive. When subjected to drops or vibrations, the waterproof adhesive is prone to cracking, and the waterproof structure can easily separate, leading to water ingress into the battery module and poor battery stability and reliability. Furthermore, existing waterproof structures, in order to ensure a certain level of waterproofing, are often quite large, resulting in high costs and low space utilization.

[0062] To address the aforementioned technical problems, this application proposes a waterproof battery structure. The waterproof battery structure includes a shell and a battery module. The shell includes a top cover and a housing. The battery module is located inside the housing, and the top cover is placed on top of the battery module. The housing is barrel-shaped. The outer edge of the top cover is welded or hot-pressed to the housing, forming a welded or hot-pressed layer between the top cover and the housing. Both the welded and hot-pressed layers have a certain degree of sealing and waterproofing, significantly improving the waterproof effect of the battery structure. Furthermore, the welded or hot-pressed connection between the outer edge of the top cover and the housing securely connects the top cover and the housing, resulting in a strong connection that prevents cracking of the adhesive structure during drops and vibrations. This ensures that the top cover and housing do not separate during drops and vibrations, thereby improving the stability and reliability of the battery waterproof structure. Additionally, the housing has high space utilization, saving costs.

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] refer to Figure 1 and Figure 2 This application provides a waterproof battery structure 100, which may include a housing 200 and a battery module 300. The battery module 300 may be disposed within the housing 200, allowing the housing 200 to protect the battery module 300.

[0065] In some embodiments, reference Figure 1 and Figure 2 The outer casing 200 may include a top cover 210. The outer casing 200 may include a housing 220. The housing 220 may be cylindrical. The top cover 210 may be connected to the housing 220. The battery module 300 may be located inside the housing 220, with the top cover 210 covering the battery module, thereby allowing the housing 220 and the top cover 210 to enclose the battery module 300, providing good protection for the battery module 300.

[0066] In some embodiments, reference Figure 8 A shell cavity 221 may be formed inside the shell 220. A shell opening 222 may be formed at one end of the shell 220. The shell opening 222 communicates the shell cavity 221 with the external space of the shell. The top cover 210 may be provided at the shell opening 222 to make full use of the space inside the shell 220.

[0067] In some embodiments, both the top cover 210 and the housing 220 can be rectangular structures, so that the entire housing 200 is also rectangular. Of course, the housing 200 can also be other shapes. This application does not limit the shape of the housing 200.

[0068] The battery module 300 can also be a rectangular structure, and the size of the battery module 300 can be less than or equal to the size of the housing 220, so that the battery module 300 can be placed inside the housing 220.

[0069] In some embodiments, the housing 220 may be in the form of a long, cylindrical tube. The housing 220 may be made of plastic.

[0070] The shell 220 can be a blow-molded shell formed by a blow molding process. The shell 220 can also be an injection-molded shell formed by an injection molding process. The shell 220 can also be an extruded shell formed by an extrusion process. The material of the shell 220 includes PE (polyethylene), PET (polyethylene terephthalate), PVC (polyvinyl chloride), PP (polypropylene), PC (polycarbonate), PS (polystyrene), ABS (acrylonitrile-butadiene-styrene copolymer), PC+ABS (a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer), PA66 (nylon 66), etc. This application does not impose specific limitations on the material of the shell 220.

[0071] The housing 220 is configured as a blow-molded housing, injection-molded housing, or extruded housing, which is not easy to break and can prevent damage to the battery waterproof structure, thereby making the battery waterproof structure 100 more reliable and stable.

[0072] In some embodiments, the top cover 210 may be a blow-molded cover formed by a blow molding process. The top cover 210 may be an injection-molded cover formed by an injection molding process. The top cover 210 may be a blister-formed cover formed by a blister forming process.

[0073] The cover 210 can be made of plastic material. Materials for the cover 210 include PE (polyethylene), PET (polyethylene terephthalate), PVC (polyvinyl chloride), PP (polypropylene), PC (polycarbonate), PS (polystyrene), ABS (acrylonitrile-butadiene-styrene copolymer), PC+ABS (a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer), PA66 (nylon 66), etc. This application does not impose specific limitations on the material of the cover 210.

[0074] The top cover is made of blow-molded, injection-molded, or extruded material, which makes it less prone to breakage and prevents damage to the battery's waterproof structure. This results in higher reliability and stability for the battery's waterproof structure 100.

[0075] In some embodiments, reference Figure 1 and Figure 2The outer edge of the upper cover 210 can be welded to the housing 220, or the outer edge of the upper cover 210 can be heat-pressed to the housing 220, so that the upper cover 210 can be placed on the housing 220. Specifically, the upper cover 210 and the housing 220 are fixedly connected by welding, or by heat pressing. If the upper cover 210 and the housing 220 are connected by welding, a welded layer can be formed between the upper cover 210 and the housing 220, and the welded layer has a certain degree of sealing and waterproofing. If the upper cover 210 and the housing 220 are connected by heat pressing, a heat-pressed layer can be formed between the upper cover 210 and the housing 220, and the heat-pressed layer has a certain degree of sealing and waterproofing.

[0076] In some embodiments, the top cover 210 and the housing 220 can be sealed together by an adhesive layer, thus achieving a waterproof function.

[0077] The top cover 210 and the housing 220 can be connected by welding or hot pressing alone. The top cover 210 and the housing 220 can also be sealed together by an adhesive layer. Furthermore, the adhesive layer further enhances the sealing and waterproofing properties between the top cover 210 and the housing 220, improving the reliability and stability of the product.

[0078] In some embodiments, reference Figure 2 When the outer edge of the cover is welded to the shell, the outer edge of the cover 210 may have a welding rib 230. The welding rib 230 may be located in the circumferential direction of the cover 210. Specifically, the welding rib 230 may extend circumferentially along the cover 210 and be arranged in a circumferential pattern.

[0079] The upper cover 210 can be welded to the inner surface of the housing 220 via welding ribs 230. The upper cover 210 can be welded to the inner surface of the housing 220 via ultrasonic welding, laser welding, friction welding, or other welding methods. Of course, in other embodiments, the upper cover 210 and the housing 220 can also be fixedly connected in other ways; this application does not impose such limitations.

[0080] It is understandable that by setting the welding rib 230, the welding rib 230 can fix the top cover and the shell, thereby effectively preventing the adhesive layer of the battery waterproof structure 100 from cracking during drop and vibration, avoiding separation of the top cover and the shell, and preventing damage to the battery waterproof structure, thus making the battery waterproof structure 100 more reliable and stable.

[0081] In some embodiments, reference Figure 2 , Figure 3 and Figure 4 The end of the welding rib away from the battery module can be located inside the housing, and the upper cover 210 and the inner surface of the housing 220 form a first groove 240.

[0082] refer to Figure 5 and Figure 6 The upper cover 210 may have an upper cover body 211. A welding rib 230 is connected to the upper cover body 211, and the welding rib 230 is connected to the side circumferential surface of the upper cover body 211. Specifically, the welding rib, the upper cover body, and the inner surface of the shell form a first groove. The welding rib 230 may be integrally formed with the upper cover body.

[0083] A first adhesive layer 241 may be provided within the first groove 240. It is understood that the first adhesive layer 241 can be used to seal the upper cover 210 and the housing 220. The first adhesive layer may be annular or other shapes.

[0084] In some embodiments, reference Figure 1 and Figure 6 A first gap exists between the upper cover and the inner surface of the housing, and the first gap is located on the side of the welding rib away from the battery module. The welding rib, the upper cover, and the inner surface of the housing form a first groove. The first groove is annular, and the first adhesive layer is annular.

[0085] In some embodiments, the side of the welding rib 230 facing the battery module 300 can be attached to the battery module 300, so that the welding rib can limit the battery module and prevent the battery module from shaking too much in the housing. In addition, the welding rib 230 has a certain waterproof performance for the battery module 300.

[0086] In some embodiments, the end of the top cover facing the battery module can be the first end of the top cover, and the end of the top cover away from the battery module can be the second end of the top cover.

[0087] The end of the welding rib facing the battery module can be called the first end of the welding rib, and the end of the welding rib away from the battery module can be called the second end of the welding rib.

[0088] refer to Figure 3 The welding rib 230 can be located at the end of the top cover 210 facing the battery module 300, so that the welding rib 230 can fit with the battery module 300 more easily, so that the welding rib can limit the battery module, prevent the battery module from shaking too much in the housing, and make the welding rib 230 have a certain waterproof performance for the battery module 300.

[0089] The welding rib can be located between the first end and the second end of the top cover. When the welding rib is located between the first end and the second end of the top cover, it can also be designed to fit the welding rib into the battery module.

[0090] The welding rib can be located at the end of the top cover away from the battery module. When the welding rib is located at the end of the top cover away from the battery module, it can also be designed to be attached to the battery module.

[0091] The end of the welding rib facing the battery module can be the first end of the top cover, and the end of the welding rib away from the battery module can be the second end of the top cover.

[0092] In some embodiments, the welding rib 230 may be protruding on the side of the upper cover 210 facing the housing 220, so that the upper cover 210 can be fixedly connected to the inner surface of the housing 220 by the protruding welding rib 230.

[0093] refer to Figure 3 The welding rib 230 is located at the end of the upper cover 210 facing the battery module 300, or the welding rib can be located between the first end and the second end of the upper cover, and the welding rib 230 protrudes from the side of the upper cover 210 facing the housing 220, so that the side of the welding rib facing away from the battery module has a first gap between the inner surface of the housing and the upper cover, thereby forming a first groove 240 on the side of the welding rib 230 facing away from the battery module 300, the side peripheral surface of the upper cover, and the inner surface of the housing 220. The first adhesive layer 241 is injected into the first groove 240, thereby further sealing the battery module 300 and improving the waterproof performance of the battery module 300. The first groove is annular and the first adhesive layer is annular.

[0094] In some embodiments, the side surface of the weld rib away from the housing and the upper cover form a third groove 270. The weld rib 230, the side peripheral surface of the upper cover, and the inner surface of the housing 220 form a first groove 240. The first groove may include the third groove.

[0095] In some embodiments, reference Figure 1 and Figure 7 When the outer edge of the top cover is heat-pressed to the housing, a heat-pressing plate 280 is provided at the outer edge of the top cover. The heat-pressing plate extends circumferentially along the top cover and is arranged in a circumferential manner. The top cover is heat-pressed to the inner surface of the housing through the heat-pressing plate.

[0096] In some embodiments, reference Figure 1 and Figure 7 The battery waterproof structure 100 may also include a third groove 270 for inserting a heat-pressing support plate.

[0097] The upper cover 210 has an upper cover body 211. A hot press plate 280 is connected to the upper cover body and is connected to the side circumferential surface of the upper cover body.

[0098] The side surface of the hot-pressing plate away from the shell and the upper cover form a third groove. When the hot-pressing plate and the inner surface of the shell are hot-pressed together, the hot-pressing support plate is inserted into the third groove to support the hot-pressing plate.

[0099] In some embodiments, the end of the hot-press plate away from the battery module is located inside the housing. A first groove is formed on the inner surfaces of the hot-press plate, the upper cover, and the housing, and a first adhesive layer is disposed within the first groove. The first adhesive layer is used to seal the upper cover to the housing.

[0100] In some embodiments, the side peripheral surface of the upper cover and the inner surface of the housing have a first gap, the first gap being located on the side of the hot press plate away from the battery module. The hot press plate, the upper cover, and the inner surface of the housing form a first groove. The first groove is annular, and the first adhesive layer is annular.

[0101] In some embodiments, reference Figure 1 and Figure 7 The side of the hot press plate 280 facing the battery module 300 can be attached to the battery module 300, so that the hot press plate 280 can limit the battery module and prevent the battery module from shaking too much in the housing. In addition, the hot press plate 280 has a certain degree of waterproof performance for the battery module 300.

[0102] In some embodiments, the end of the hot press plate 280 facing the battery module can be the first end of the hot press plate, and the end of the hot press plate away from the battery module can be the second end of the hot press plate.

[0103] The hot plate can be located at the end of the top cover 210 facing the battery module 300, which makes it easier for the hot plate to fit against the battery module 300. This allows the hot plate to limit the position of the battery module, preventing it from shaking too much inside the casing, and also gives the hot plate a certain degree of waterproof performance for the battery module 300.

[0104] The hot press plate can be located between the first end and the second end of the top cover. When the hot press plate is located between the first end and the second end of the top cover, it can also be configured to be attached to the battery module.

[0105] The hot plate can be located at the end of the top cover away from the battery module. When the hot plate is located at the end of the top cover away from the battery module, it can also be set to be attached to the battery module.

[0106] The end of the hot press plate facing the battery module can be the first end of the top cover, and the end of the hot press plate away from the battery module can be the second end of the top cover.

[0107] In some embodiments, reference Figure 1 and Figure 2The battery waterproof structure 100 may also include wires 400. The number of wires 400 can be multiple, and this application does not limit the number of wires 400. It is understood that multiple wires 400 are electrically connected to the battery module 300.

[0108] refer to Figure 1 , Figure 2 and Figure 5 The upper cover 210 may have a second groove 250 for the wire 400 to pass through. One end of the wire 400 can pass through the second groove 250, thereby electrically connecting the wire 400 to the battery module 300. In one possible implementation, the second groove 250 may be rectangular, and its position may correspond to the position of the wire 400, facilitating the passage of the wire 400. This embodiment does not limit the shape and position of the second groove 250. The second groove may be formed on the upper cover.

[0109] In some embodiments, a second adhesive layer 251 may be provided between the second groove 250 and the wire 400. It is understood that the second adhesive layer 251 can be used to seal the gap between the wire 400 and the second groove 250. In one possible implementation, after several wires 400 are inserted into the second groove 250, there are certain gaps between the wires 400 in the second groove 250, causing the wires 400 to be not fixed. Injecting the second adhesive layer 251 into the second groove 250 fills the gap between the wires 400 and the second groove 250, fixing the position of the wires 400, thereby further sealing the battery module 300 and improving the waterproof performance of the battery module 300.

[0110] In some embodiments, the first adhesive layer 241 and the second adhesive layer 251 may be adhesive. Of course, in other embodiments, the first adhesive layer 241 and the second adhesive layer 251 may include, but are not limited to, one-component adhesives and potting compounds with waterproof bonding effects.

[0111] In some embodiments, the first adhesive layer may surround the outside of the wire. Alternatively, the first adhesive layer may be used to seal the gap between the wire and the inner surface of the housing, so that the first adhesive layer also serves to seal the second groove.

[0112] In some embodiments, reference Figure 7A cavity 260 may be provided between the top cover 210 and the housing 220. The battery module 300 may be located within the cavity 260. In this embodiment, the top cover 210 and the housing 220 are fixedly connected by welding ribs 230 or hot press plates, so that the entire housing 200 has a hollow cavity 260 inside, allowing the battery module 300 to be placed in the cavity 260.

[0113] Based on the above embodiments, the installation process of the battery waterproof structure 100 provided in this application embodiment is as follows: First, the battery module 300 is assembled. Second, the battery module 300 is installed into the housing 220. Then, the top cover 210 is placed on the battery module 300, and the top cover 210 is connected to the housing 220 by the welding ribs 230 in the circumferential direction of the top cover 210 or by a hot press plate. Finally, an adhesive layer is injected into the first groove 240 between the top cover 210 and the housing 220 and into the second groove 250 on the top cover 210, so that the battery waterproof structure 100 has good waterproof performance.

[0114] A second aspect of this application provides a vehicle (not shown in the figures) that may include the aforementioned battery waterproof structure 100. In one possible implementation, the vehicle may be an electric vehicle such as a moped, scooter, or balance bike.

[0115] In this embodiment, the battery waterproof structure includes a shell and a battery module. The shell includes a top cover and a housing. The battery module is located inside the housing, and the top cover is placed on the battery module. The housing is barrel-shaped, and the outer edge of the top cover is welded or hot-pressed to the housing, forming a welded layer or hot-pressed layer between the top cover and the housing. Both the welded layer and the hot-pressed layer have a certain degree of sealing and waterproofing, which can significantly improve the waterproof effect of the battery waterproof structure. Furthermore, the welded or hot-pressed connection between the outer edge of the top cover and the housing can fix the top cover and the housing together, and the connection has good strength, which can prevent the adhesive structure from cracking during drops and vibrations. This ensures that the top cover and the housing will not separate during drops and vibrations, thereby improving the stability and reliability of the battery waterproof structure. In addition, the battery waterproof structure provided in this application has a high space utilization rate. High efficiency and cost-saving features; while the top cover and shell are welded or hot-pressed together, an adhesive layer seals them together. This welding or hot-pressing ensures relative stability between the top cover and shell, preventing shaking. The adhesive layer at the connection point is also protected from deformation and tearing, making it less prone to damage and further improving the waterproof performance of the battery structure. Overall, the connection method of the battery waterproof structure is relatively simple, reducing assembly steps, improving production efficiency, and facilitating maintenance. The shell is either blow-molded or injection-molded, making it less prone to breakage and preventing damage to the battery waterproof structure, thus enhancing its reliability and stability.

[0116] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0117] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0118] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0119] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0120] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0121] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A waterproof battery structure, characterized in that, include: The outer casing includes a top cover and a housing; the housing is barrel-shaped; the outer edge of the top cover is welded or hot-pressed to the housing; A battery module, wherein the battery module is located inside the housing, and the top cover is disposed on the battery module; The upper cover and the housing are sealed together by an adhesive layer; The housing is a blow-molded housing formed by a blow molding process, or the housing is an injection-molded housing formed by an injection molding process; When the outer edge of the top cover is welded to the shell, the outer edge of the top cover has welding ribs, the welding ribs extend circumferentially along the top cover, and the welding ribs are arranged in a circumferential manner; The top cover is welded to the inner surface of the shell via the welding ribs.

2. The waterproof battery structure according to claim 1, characterized in that, The end of the welding rib away from the battery module is located inside the housing; The upper cover has an upper cover body, and the welding rib is connected to the upper cover body. The welding rib is connected to the side circumferential surface of the upper cover body. The inner surfaces of the welding rib, the upper cover, and the shell form a first groove; a first adhesive layer is provided in the first groove; The first adhesive layer is used to seal the top cover to the housing.

3. The waterproof battery structure according to claim 2, characterized in that, There is a first gap between the upper cover and the inner surface of the housing, and the first gap is located on the side of the welding rib away from the battery module; The first groove is annular, and the first adhesive layer is annular.

4. The waterproof battery structure according to claim 3, characterized in that, The welding rib protrudes from the side of the upper cover facing the housing.

5. The waterproof battery structure according to claim 2, characterized in that, The side of the welding rib facing the battery module is in contact with the battery module.

6. The waterproof battery structure according to claim 1, characterized in that, When the outer edge of the upper cover is hot-pressed to the shell, the outer edge of the upper cover has a hot-pressing plate; the hot-pressing plate extends circumferentially along the upper cover and is arranged in a circumferential manner; The top cover is heat-pressed to the inner surface of the housing via the hot-press plate.

7. The waterproof battery structure according to claim 6, characterized in that, Includes a third groove for inserting the heat-pressing support plate; The upper cover has an upper cover body, and the hot press plate is connected to the upper cover body. The hot press plate is connected to the side circumferential surface of the upper cover body. The hot-press plate and the upper cover form the third groove on the side surface away from the housing. When the hot-press plate and the inner surface of the housing are hot-pressed together, the hot-press support plate is inserted into the third groove to support the hot-press plate.

8. The waterproof battery structure according to claim 7, characterized in that, The end of the hot press plate away from the battery module is located inside the housing; The inner surfaces of the hot press plate, the upper cover and the shell form a first groove, and a first adhesive layer is provided in the first groove; The first adhesive layer is used to seal the top cover to the housing.

9. The waterproof battery structure according to claim 8, characterized in that, The upper cover and the inner surface of the housing have a first gap, and the first gap is located on the side of the hot press plate away from the battery module; The first groove is annular, and the first adhesive layer is annular.

10. The waterproof battery structure according to claim 8, characterized in that, The side of the hot press plate facing the battery module is attached to the battery module.

11. The waterproof battery structure according to any one of claims 2-5 and 8-10, characterized in that, The battery waterproof structure includes: The wire is electrically connected to the battery module.

12. The waterproof battery structure according to claim 11, characterized in that, The upper cover has a second groove for the wire to pass through; One end of the wire passes through the second groove and is electrically connected to the battery module.

13. The waterproof battery structure according to claim 12, characterized in that, A second adhesive layer is provided between the second groove and the wire; The second adhesive layer is used to seal the gap between the wire and the second groove.

14. The waterproof battery structure according to claim 11, characterized in that, The first adhesive layer surrounds the outside of the wire, or the first adhesive layer seals the gap between the wire and the inner surface of the housing.

15. The waterproof battery structure according to claim 13, characterized in that, The first adhesive layer and the second adhesive layer are glue.

16. The waterproof battery structure according to any one of claims 1-10, characterized in that, A receiving cavity is provided between the upper cover and the housing; The battery module is located within the receiving cavity.

17. A vehicle, characterized in that, The battery waterproof structure includes any one of claims 1-16.

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