Waterproof battery and electric equipment

Abstract

The utility model relates to the field of energy storage devices, and discloses a waterproof battery and electric equipment, the waterproof battery comprises an upper cover, a middle frame, an annular sealing element and a plurality of connecting screws, and the upper cover is provided with mounting holes for mounting the connecting screws; a screw rod part of the connecting screw sequentially penetrates through the mounting hole and the annular sealing piece to be fixedly connected with the middle frame; a limiting face used for stopping the head of the connecting screw is arranged in the mounting hole, an annular ultrasonic line used for being in press-fit welding connection with the head of the connecting screw is arranged on the limiting face, and the annular ultrasonic line surrounds the screw rod part. According to the waterproof battery and the electric equipment disclosed by the utility model, the water inflow possibility of the battery can be reduced, and the sealing effect of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage devices, and in particular to a waterproof battery and electrical equipment. Background Technology

[0002] As society develops, people's requirements for the waterproof performance of batteries are gradually increasing.

[0003] The battery consists of a top cover and a middle frame. The existing sealing method involves the top cover being press-fitted onto the middle frame with screws, and a compressed annular seal is installed between the top cover and the middle frame. The opposite sides of the annular seal abut against the top cover and the middle frame, thus sealing the gap between them and preventing moisture from entering the battery cavity. However, water can easily seep into the battery along the screws, affecting battery safety.

[0004] Therefore, it is necessary to design a waterproof battery and electrical device to reduce the possibility of water ingress into the waterproof battery and improve its sealing performance.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a waterproof battery and electrical device, which reduces the possibility of water ingress into the waterproof battery and improves the sealing effect of the waterproof battery.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A waterproof battery includes a top cover, a middle frame, an annular seal, and a plurality of connecting screws, wherein the top cover is provided with mounting holes for installing the connecting screws;

[0009] The screw portion of the connecting screw passes sequentially through the mounting hole, the annular seal, and is fixedly connected to the middle frame; the mounting hole is provided with a limiting surface for stopping the head of the connecting screw, and the limiting surface is provided with an annular ultrasonic line for pressing and welding with the head of the connecting screw, the annular ultrasonic line surrounding the screw portion.

[0010] Optionally, a connecting portion for connecting the screw portion is provided on the inner side of the middle frame;

[0011] The connecting portion includes a first protrusion and a second protrusion disposed opposite to each other, a threaded hole for connecting the screw portion is formed between the first protrusion and the second protrusion, and the tail ends of the first protrusion and the second protrusion are separated from each other.

[0012] Optionally, when the screw portion is screwed into the threaded hole, the first protrusion and the second protrusion surround 2 / 3 of the outer periphery of the screw portion extending into the threaded hole.

[0013] Optionally, the annular seal is provided with a through hole through which the threaded portion of the connecting screw passes;

[0014] The top cover and the middle frame, when combined, form an inner cavity for accommodating the battery. An annular waterproof retaining ring is also protruding on the annular seal, which separates the inner cavity from the through hole.

[0015] Optionally, the annular waterproof retaining ring abuts against the middle frame.

[0016] Optionally, the upper cover is provided with an annular mounting groove, and the annular seal is embedded in the annular mounting groove.

[0017] Optionally, the top cover has an annular baffle portion for extending into the inner side of the middle frame and positioning the annular seal.

[0018] Optionally, the connecting screw is a machine screw.

[0019] Optionally, the cross-section of the annular ultrasound line is triangular.

[0020] An electrical device comprising a waterproof battery as described in any of the preceding claims.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The waterproof battery and electrical equipment provided by this utility model have a connecting screw whose screw part passes through the mounting hole and the annular seal in sequence and is fixedly connected to the middle frame, thereby keeping the top cover and the middle frame sealed. The head of the connecting screw is pressed against the limiting surface in the mounting hole, and the head of the connecting screw and the limiting surface are sealed by a welded annular ultrasonic line, which prevents water from seeping into the waterproof battery along the connecting screw, reduces the possibility of water ingress into the waterproof battery, and improves the sealing and waterproof effect of the waterproof battery.

[0023] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0026] Figure 2 yes Figure 1 Enlarged schematic diagram of the waterproof battery at point B;

[0027] Figure 3 This is a cross-sectional schematic diagram of the waterproof battery provided in an embodiment of this utility model;

[0028] Figure 4 yes Figure 3 A magnified view of the waterproof battery at point A;

[0029] Figure 5 This is a three-dimensional structural schematic diagram of the annular seal provided in an embodiment of this utility model.

[0030] Reference numerals: 1. Top cover; 11. Mounting annular groove; 12. Annular baffle; 2. Middle frame; 21. First protrusion; 22. Second protrusion; 202. Threaded hole; 3. Annular seal; 301. Through hole; 302. Annular waterproof retaining ring; 4. Connecting screw; 41. Screw; 42. Head; 401. Circular ultrasonic line. Detailed Implementation

[0031] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0032] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0033] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0035] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0036] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0037] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0038] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] Example 1

[0041] In view of the aforementioned defects in existing batteries, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a technology that could solve the defects in the existing technology and make waterproof batteries more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0042] Please refer to Figures 1 to 5 This utility model embodiment provides a waterproof battery, including a top cover 1, a middle frame 2, an annular seal 3, and a plurality of connecting screws 4. The top cover 1 is provided with mounting holes 101 for installing the connecting screws 4, and the bottom wall of the mounting hole 101 is provided with a connecting hole through which the screw portion 41 of the connecting screw 4 can pass.

[0043] The screw portion 41 of the connecting screw 4 passes sequentially through the mounting hole 101 and the annular seal 3 and is fixedly connected to the middle frame 2; the mounting hole 101 is provided with a limiting surface for stopping the head 42 of the connecting screw 4; the limiting surface is provided with an annular ultrasonic line 401 for pressing and welding with the head 42 of the connecting screw 4, and the annular ultrasonic line 401 surrounds the screw portion 41.

[0044] Specifically, during the tightening of the connecting screw 101, the upper cover 1 and the middle frame 2 gradually press against the annular seal 3, thereby sealing the gap between the upper cover 1 and the middle frame 2. When the head 42 of the connecting screw 4 presses against the limiting surface, the annular ultrasonic line 401 on the limiting surface fuses with the head 42 of the connecting screw 4 to the limiting surface, thereby preventing water from seeping downwards along the gap between the limiting surface and the head 42. The above structure effectively improves the waterproof effect and sealing performance of the waterproof battery.

[0045] Optionally, the inner side of the middle frame 2 is provided with a connecting portion for connecting the screw portion 41; the connecting portion includes a first protrusion 21 and a second protrusion 22 disposed opposite to each other, a threaded hole 202 for connecting the screw portion 41 is formed between the first protrusion 21 and the second protrusion 22, and the tail ends of the first protrusion 21 and the second protrusion 22 are separated from each other. In this embodiment, it is beneficial to reduce the weight of the middle frame 2 and reduce the production cost of the middle frame 2. Generally, the middle frame 2 is an aluminum middle frame, and the first protrusion 21 and the second protrusion 22 form a semi-open threaded hole 202, which reduces the amount of aluminum used, which is beneficial to reduce weight and save costs.

[0046] Optionally, when the screw portion 41 is screwed into the threaded hole 202, the first protrusion 21 and the second protrusion 22 surround 2 / 3 of the outer periphery of the screw portion 41 extending into the threaded hole 202, thereby ensuring the installation stability of the screw portion 41 and avoiding the possibility of partial breakage of the first protrusion 21 and the second protrusion 22.

[0047] Optionally, the annular seal 3 is provided with a through hole 301 for the threaded portion 41 of the connecting screw 4 to pass through, and the annular seal 3 has a ring-shaped portion for surrounding the threaded portion; the upper cover 1 and the middle frame 2, when combined, form an inner cavity for accommodating the battery, and an annular waterproof retaining ring 302 is also protruding on the annular seal 3, which separates the inner cavity from the through hole 301. Specifically, the protruding annular waterproof retaining ring 302, in conjunction with the main body, further surrounds the top of the middle frame 2, thereby improving the sealing effect.

[0048] Optionally, such as Figure 4 The annular waterproof retaining ring 302 abuts against the middle frame 2. At this time, water needs to penetrate through the L-shaped path to enter the waterproof battery, which significantly increases the difficulty of penetration and thus improves the waterproof effect of the waterproof battery.

[0049] Optionally, the upper cover 1 is provided with an annular groove 11, and the annular seal 3 is embedded in the annular groove 11. The annular groove 11 allows the annular seal 3 to apply greater pressure to the top of the middle frame 2 during the compression process, thus preventing excessive lateral deformation of the annular seal 3 and affecting the sealing effect.

[0050] Optionally, such as Figure 4 The upper cover 1 has an annular baffle portion 12 for extending into the inner side of the middle frame 2 and positioning the annular seal 3. The annular baffle portion 12 further limits the annular seal 3, ensuring that it can only deform laterally outwards, which helps to ensure a tight seal between the seal 3 and the annular baffle portion 12. The annular baffle portion 12 forms a groove for positioning the seal 3, effectively preventing the seal from slipping or becoming inaccurately positioned.

[0051] In this embodiment, the connecting screw 4 is a machine screw.

[0052] Optionally, the cross-section of the annular ultrasonic line 401 is triangular, which makes it easier to achieve the effect of welding the cover 1 and the connecting screw 4 together.

[0053] optional

[0054] This embodiment discloses an electrical device, including a waterproof battery as described in any one of Embodiment 1.

[0055] Electrical equipment can include electric bicycles, electric toys, power tools, or new energy vehicles, etc.

[0056] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A waterproof battery, characterized in that, It includes an upper cover (1), a middle frame (2), an annular seal (3) and several connecting screws (4), and the upper cover (1) is provided with mounting holes (101) for installing the connecting screws (4); The screw portion (41) of the connecting screw (4) passes sequentially through the mounting hole (101), and the annular seal (3) is fixedly connected to the middle frame (2); the mounting hole (101) is provided with a limiting surface for stopping the head (42) of the connecting screw (4), and the limiting surface is provided with an annular ultrasonic line (401) for pressing and welding with the head (42) of the connecting screw (4), and the annular ultrasonic line (401) surrounds the screw portion (41).

2. The waterproof battery according to claim 1, characterized in that, The inner side of the middle frame (2) is provided with a connecting part for connecting the screw part (41); The connecting portion includes a first protrusion (21) and a second protrusion (22) disposed opposite to each other, a threaded hole (202) for connecting the screw portion (41) is formed between the first protrusion (21) and the second protrusion (22), and the tail ends of the first protrusion (21) and the second protrusion (22) are separated from each other.

3. The waterproof battery according to claim 2, characterized in that, When the screw portion (41) is screwed into the threaded hole (202), the first protrusion (21) and the second protrusion (22) surround 2 / 3 of the outer periphery of the screw portion (41) extending into the threaded hole (202).

4. The waterproof battery according to claim 1, characterized in that, The annular seal (3) is provided with a through hole (301) through which the screw portion (41) of the connecting screw (4) passes; The upper cover (1) and the middle frame (2) are combined to form an inner cavity for accommodating the battery. An annular waterproof retaining ring (302) is also protruding on the annular seal (3), which separates the inner cavity from the through hole (301).

5. The waterproof battery according to claim 4, characterized in that, The annular waterproof retaining ring (302) abuts against the middle frame (2).

6. The waterproof battery according to claim 1, characterized in that, The upper cover (1) is provided with an mounting annular groove (11), and the annular seal (3) is embedded in the mounting annular groove (11).

7. The waterproof battery according to claim 1, characterized in that, The upper cover (1) has an annular baffle portion (12) for extending into the inner side of the middle frame (2) and positioning the annular seal (3).

8. The waterproof battery according to claim 1, characterized in that, The connecting screw (4) is a machine screw.

9. The waterproof battery according to claim 1, characterized in that, The cross-section of the annular ultrasound line (401) is triangular.

10. An electrical appliance, characterized in that, It includes a waterproof battery as described in any one of claims 1 to 9.

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