Underwater Sealed Battery and Underwater Robot

Abstract

The present application provides an underwater sealed battery, which includes a battery cover body and a battery body. The battery cover body is detachably disposed on the top of the battery body to seal the battery body. The battery cover body includes a sealing portion and a sealing portion fixing member. The sealing portion includes a battery sealing cover seat, a sealing edge of the battery sealing cover seat disassembly part, and a sealing ring. The upper surface of the sealing edge of the battery sealing cover seat disassembly part is fixedly connected to the bottom of the battery sealing cover seat by ultrasonic welding, and an annular groove is formed between the outer periphery of the sealing edge of the battery sealing cover seat disassembly part and the outer periphery of the bottom of the battery sealing cover seat. The sealing ring is sleeved in the annular groove. The battery body includes a battery housing. A groove is provided at the top of the battery housing. The groove accommodates the bottom of the sealing portion and fits with the sealing ring. The sealed battery provided by the present application is convenient for disassembly, and the sealing parts are locked with each other and are not easily lost. Ultrasonic welding is used to form an annular groove so that the inner surface of the annular groove has no parting line, improving the fitting degree between the sealing ring and the annular groove and thus improving the sealing effect.

Description

Technical Field

[0001] The present application relates to the technical field of battery applications, and more particularly, to an underwater sealed battery and an underwater robot. Background Art

[0002] For equipment operating underwater, such as underwater cleaning robots, underwater boosters, etc., they need to operate underwater for a long time. The power supply batteries of these devices often use rechargeable batteries for recycling. To ensure the safety and stability of underwater operations, there are high requirements for the sealing performance of the power supply batteries. Existing underwater sealed batteries generally use the method of pouring glue for sealing, or use a sealed housing to enclose the power supply battery.

[0003] The inventors of the present application found that for sealed batteries using the method of pouring glue, if the outer shell is damaged, the sealing layer is easily damaged, resulting in sealing failure. For power supply batteries sealed with a sealed housing, the battery itself is not sealed. When disassembling and replacing the internal battery, the sealing components may be lost, and the battery may be short-circuited and damaged if it accidentally comes into contact with water during battery replacement.

[0004] The content in the background art section is only the technology known to the applicant and does not necessarily represent the prior art in this field. Summary of the Invention

[0005] The technical solution of the present application aims to solve the technical problems such as poor sealing effect and easy loss of sealing components existing in the sealed batteries using the method of pouring glue and the power supply batteries sealed with a sealed housing mentioned above.

[0006] According to one aspect of the present application, the present application provides an underwater sealed battery. The sealed battery includes a battery cover body and a battery body. The battery cover body is detachably provided on the top of the battery body to seal the battery body. The battery cover body includes a sealing portion and a sealing portion fixing member.

[0007] The sealing portion includes a battery sealing cover seat, a battery sealing cover seat disassembly edge, and a sealing ring. The upper surface of the battery sealing cover seat disassembly edge is fixedly connected to the bottom of the battery sealing cover seat by ultrasonic welding, and an annular groove is formed between the outer periphery of the battery sealing cover seat disassembly edge and the outer periphery of the bottom of the battery sealing cover seat. The sealing ring is sleeved in the annular groove. The sealing portion fixing member is detachably connected to the battery sealing cover seat and detachably connected to the battery body. When the sealing portion fixing member is connected to the battery body, the sealing portion is accommodated between the sealing portion fixing member and the battery body. The battery body includes a battery housing, and a groove is provided at the top of the battery housing. The groove accommodates the bottom of the sealing portion and fits with the sealing ring.

[0008] Optionally, the battery cover body further includes a battery cover body cover plate and a lubricating gasket. The battery cover body cover plate is snap-fitted above the sealing portion fixing member, and the lubricating gasket is sleeved between the battery sealing cover seat and the sealing portion fixing member.

[0009] Optionally, the seal fixing member is provided with a first limiting member. The battery seal cover seat is provided with a second limiting member and a third limiting member. The first limiting member and the second limiting member are buckled to lock the battery seal cover seat and the seal fixing member in the Z-axis direction. The third limiting member defines the horizontal rotation angle of the seal fixing member relative to the battery seal cover seat.

[0010] Optionally, the seal fixing member is further provided with a fourth limiting member and a fifth limiting member. The end of the battery housing is provided with a sixth limiting member and a seventh limiting member. The fourth limiting member and the sixth limiting member are buckled to limit the relative movement between the seal fixing member and the battery housing. When the fifth limiting member and the seventh limiting member are buckled, the relative movement between the seal fixing member and the battery housing in the negative Z-axis direction is restricted, and the fourth limiting member and the sixth limiting member are clamped.

[0011] Optionally, the end of the battery housing is provided with an opening. The battery body further includes a battery circuit board. The positive electrode elastic piece and the negative electrode elastic piece of the battery circuit board extend out from the opening at the end of the battery housing. The battery body further includes a triangular seal ring. The triangular seal ring is arranged inside the battery housing and tightly sleeved under the battery circuit board to seal the battery circuit board.

[0012] Optionally, the upper end of the battery seal cover seat is provided with a first cavity. A battery cover body circuit board is fixed in the first cavity. A first potting layer is arranged above the battery cover body circuit board inside the first cavity to seal the battery cover body circuit board. A second cavity is arranged inside the battery housing. A second potting layer is arranged in the second cavity to seal the inside of the battery body.

[0013] Optionally, a Hall magnetic part is arranged at the bottom of the battery cover body circuit board of the battery. The battery circuit board is provided with a Hall element. When the seal fixing member and the battery seal cover seat are screwed and buckled, the Hall magnetic part and the Hall element are in opposite positions and the relative distance is not greater than the triggering distance of Hall induction.

[0014] Optionally, the present application further provides an underwater robot, including the above-mentioned sealed battery.

[0015] Optionally, the underwater robot is an underwater booster.

[0016] The present application has the following beneficial effects.

[0017] The underwater sealed battery provided by this application has a separable design of the battery cover and the battery body, which facilitates the disassembly of the battery. The adjacent components of the battery cover can be locked to each other, making it difficult for the individual components within the battery cover to be lost. The ultrasonic welding method is used to form an annular groove, so that there is no parting line on the surface of the annular groove, thereby improving the fit between the sealing ring and the annular groove, and further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 FIG. shows the disassembled structure schematic diagram of the sealed battery according to the embodiment of this application;

[0020] Figure 2 FIG. shows the structure schematic diagram of the sealed battery according to the embodiment of this application;

[0021] Figure 3 FIG. shows the structure schematic diagram of a perspective of the battery cover according to the embodiment of this application;

[0022] Figure 4 FIG. shows a partially disassembled schematic diagram of a perspective of the battery body according to the embodiment of this application;

[0023] Figure 5 FIG. shows a cross-sectional schematic diagram of a perspective of the battery body according to the embodiment of this application.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS:

[0025] Battery cover 10, sealing part 11, lubricating gasket 12, sealing part fixing member 13, battery cover circuit board 14, battery cover plate 15, battery body 20, battery housing 21, battery sealing cover seat 111, battery sealing cover seat disassembly part edge 112, sealing ring 113, Hall magnetic part 141, first limiting part 131, second limiting part 1111, fourth limiting part 132, fifth limiting part 133, first cavity 1112, sixth limiting part 211, seventh limiting part 212, negative electrode elastic piece 2021, positive electrode elastic piece 2022, triangular sealing ring 201, circuit board 202, second cavity 213. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar parts, and thus their repetitive description will be omitted.

[0027] The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of these specific details, or other means, components, materials, devices, etc. may be used. In such cases, well-known structures, methods, devices, implementations, materials, or operations will not be shown or described in detail.

[0028] Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0029] The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish different objects, rather than to describe a specific order.

[0030] The technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of this application.

[0031] According to an example embodiment, as Figure 1 and Figure 2 shown, this application provides a subsea sealed battery.

[0032] The sealed battery includes a battery cover body 10 and a battery body 20. The battery cover body 10 is detachably disposed on the top of the battery body 20 to seal the battery body 20. The battery cover body 10 includes a sealing portion 11 and a sealing portion fixing member 13.

[0033] The sealing part 11 includes a battery sealing cover base 111, a sealing edge 112 for disassembling the battery sealing cover base, and a sealing ring 113. The upper surface of the sealing edge 112 for disassembling the battery sealing cover base is fixedly connected to the bottom of the battery sealing cover base 111 by ultrasonic welding, and an annular groove is formed between the outer periphery of the sealing edge 112 for disassembling the battery sealing cover base and the outer periphery of the bottom of the battery sealing cover base 111.

[0034] The sealing ring 113 is sleeved in the annular groove. The fixing part 13 of the sealing part is sleeved above the battery sealing cover base 111 and is detachably connected to the battery body 20. The battery body 20 includes a battery housing 21. A groove is provided at the top of the battery housing 21. The groove accommodates the bottom of the sealing part 11 and is in contact with the sealing ring 113.

[0035] For example, the materials of the battery cover 10 and the battery housing 21 can be ABS (acrylonitrile-butadiene-styrene copolymer, Acrylonitrile-Butadiene-Styrene, abbreviated as ABS). The battery cover 10 and the battery body 20 can be detachably connected in a threaded connection manner. For example, matching fastening threads are provided on the battery cover 10 and the battery body 20, and the battery cover 10 and the battery body 20 are detachably connected together by the clamping action of the threads.

[0036] For example, the battery cover 10 and the battery body 20 can be detachably connected by riveting. For example, tenons and mortises that can be nested with each other are provided on the battery cover 10 and the battery body 20, so that the battery cover 10 and the battery body 20 are detachably connected together.

[0037] For example, the detachable connection method between the battery cover 10 and the battery body 20 can also be snap connection. For example, snap connection structures that can be snapped together are provided on the battery cover 10 and the battery body 20, so that the battery cover 10 and the battery body 20 are detachably connected. When the battery cover 10 and the battery body 20 are screwed and fixed together, the battery cover 10 covers and seals the battery end of the battery body 20 with the exposed electrode.

[0038] For example, the sealing ring 113 can be a rubber ring, and the contact surface between the sealing ring 113 and the groove at the top of the battery housing 21 can form a certain angle with the groove. During the downward movement of the battery sealing cover base 111, the compression amount of the sealing ring 113 by the groove at the top of the battery housing 21 will increase, improving the fit between the sealing ring 113 and the groove, thereby improving the sealing performance.

[0039] Through the above embodiments, the sealing ring 113 and the groove are combined to form a radial seal. The upper surface of the edge sealing 112 of the battery sealing cover base disassembled part can be fixedly connected to the bottom of the battery sealing cover base 111 by ultrasonic welding to form a complete part. Through ultrasonic welding, the parting line of the battery sealing cover base 111 is at the root or the tip of the draft of the battery sealing cover base 111, so that there is no parting line at the annular groove, and the annular groove is more complete and flat. The solution of this embodiment improves the fitting degree of the sealing ring 113 and the annular groove, and thus improves the sealing effect.

[0040] According to an exemplary embodiment, as Figure 1 shown, the battery cover body 10 further includes a battery cover body cover plate 15 and a lubricating gasket 12. The battery cover body cover plate 15 is snap-fitted above the sealing part fixing member 13. The lubricating gasket 12 is sleeved between the battery sealing cover base 111 and the sealing part fixing member 13.

[0041] For example, the material of the battery cover body cover plate 15 can be ABS engineering plastic. The battery cover body cover plate 15 can shield and protect the battery cover body circuit board 14 inside the battery sealing cover base 111. The lubricating gasket 12 can be a metal annular gasket.

[0042] Through the above embodiments, a lubricating gasket 12 is provided between the sealing part fixing member 13 and the battery sealing cover base 111. The solution of this embodiment can reduce the friction between the sealing part fixing member 13 and the battery sealing cover base 111, reduce the resistance suffered by the sealing part fixing member 13 when rotating, and thus can contribute to the screwing operation of the sealing part fixing member 13.

[0043] According to an exemplary embodiment, as Figure 1 shown, the sealing part fixing member 13 is provided with a first limiting member 131. The battery sealing cover base 111 is provided with a second limiting member 1111 and a third limiting member (not shown in the figure). The first limiting member 131 and the second limiting member 1111 are buckled to lock the battery sealing cover base 111 and the sealing part fixing member 13 in the Z-axis direction. The third limiting member is used to limit the horizontal rotation angle of the sealing part fixing member 13 relative to the battery sealing cover base 111.

[0044] For example, the first limiting member 131 can be a first convex block group arranged at intervals. The second limiting member 1111 can be a second convex block group arranged at intervals. The first convex block group and the second convex block group are buckled one by one. After the first convex block group and the second convex block group are buckled, the battery sealing cover base 111 and the sealing part fixing member 13 cannot be separated from each other in the Z-axis direction and can rotate relative to each other in the horizontal direction.

[0045] The third limiting component can be a bump provided on the battery sealing cover base 111. During the horizontal rotation of the sealing part fixing member 13, the first limiting component 131 and the second limiting component 1111 undergo relative displacement in the horizontal direction. When the sealing part fixing member 13 rotates to the maximum horizontal rotation angle, the first limiting component 131 comes into contact with the third limiting component, and the third limiting component prevents the first limiting component 131 from continuing to move, so that the first limiting component 131 and the second limiting component 1111 do not separate from each other.

[0046] Through the above embodiments, limiting components are provided on the sealing part fixing member 13 and the battery sealing cover base 111. The solution of this embodiment helps the battery sealing cover base 111 and the sealing part fixing member 13 not to separate from each other in the Z-axis direction, and in the horizontal direction, the sealing part fixing member 13 and the battery sealing cover base 111 can freely rotate within a fixed angle.

[0047] According to an exemplary embodiment, as shown in FIGS. 1 and Figure 3 As shown, the sealing part fixing member 13 is further provided with a fourth limiting component 132 and a fifth limiting component 133. The end of the battery housing 21 is provided with a sixth limiting component 211 and a seventh limiting component 212. The fourth limiting component 132 can be buckled with the sixth limiting component 211 to limit the relative movement between the sealing part fixing member 13 and the battery housing 21. The fifth limiting component 133 can be buckled with the seventh limiting component 212 to limit the relative movement between the sealing part fixing member 13 and the battery housing 21 in the Z-axis direction. After the fourth limiting component 132 and the sixth limiting component 211 are clamped tightly, correspondingly, the fifth limiting component 133 and the seventh limiting component 212 are clamped tightly.

[0048] For example, the fourth limiting component 132 can be a set of grooves arranged at intervals. The sixth limiting component 211 can be a set of third bumps arranged at intervals. The set of grooves and the set of third bumps are buckled one by one. The fifth limiting component 133 can be a set of fourth bumps. The seventh limiting component 212 can be a set of fifth bumps. After the set of grooves and the set of third bumps are buckled one by one, the set of fourth bumps and the set of fifth bumps are clamped tightly.

[0049] By providing limiting components at the ends of the sealing part fixing member 13 and the battery housing 21, the battery cover 10 and the battery body 20 can be locked and fixed.

[0050] According to an exemplary embodiment, as Figure 1 and Figure 4As shown, an opening is provided at the end of the battery housing 21. The battery body 20 further includes a battery circuit board 202 and a triangular seal ring 201. The battery circuit board 202 is fixed to the top inside the battery housing 21. The positive electrode elastic piece 2022 and the negative electrode elastic piece 2021 of the battery circuit board 202 extend out from the opening. The triangular seal ring 201 is arranged inside the battery housing 21 and tightly sleeved under the battery circuit board 202 to seal the battery circuit board 202.

[0051] For example, the shape of the triangular seal ring 201 matches the shape of the electrode distribution of the battery circuit board 202. The triangular seal ring 201 can be a rubber ring, which can perform end face sealing on the bottom end of the battery circuit board 202.

[0052] According to the exemplary embodiment, as Figure 1 shown, a first cavity 1112 is provided at the upper end of the battery seal cover base 111. A battery cover body circuit board 14 and a first potting layer are fixed inside the first cavity 1112. The first potting layer is arranged above the battery cover body circuit board 14 to seal the battery cover body circuit board 14.

[0053] For example, the first potting layer can be obtained by potting with potting resin glue. Potting the battery cover body circuit board 14 inside the first cavity 1112 can seal and protect the battery cover body circuit board 14.

[0054] According to the exemplary embodiment, as Figure 5 shown, a second cavity 213 is provided inside the battery housing 21. A second potting layer is provided inside the second cavity 213, and the second potting layer seals the inside of the battery body 20.

[0055] For example, the second potting layer can be obtained by potting with potting resin glue. The second potting layer can seal and protect the battery body 20.

[0056] According to the exemplary embodiment, as Figure 1 and Figure 4 shown, a Hall magnetic part 141 is provided at the bottom of the battery cover body circuit board 14 of the battery, and a Hall element is provided on the battery circuit board 202. After the sealing part fixing member 13 and the battery seal cover base 111 are screwed and fastened, the Hall magnetic part 141 and the Hall element are in opposite positions and the relative distance is not greater than the triggering distance of Hall induction. After the battery cover body 10 and the battery body 20 are fixed and screwed tightly, Hall induction is triggered and the battery discharges. After the battery cover body 10 and the battery body 20 are separated, Hall induction is not triggered and the battery does not discharge.

[0057] For example, the battery circuit board 202 may further be provided with a transmission component, and the Hall magnetic component 141 is fixed to the transmission component. By adjusting the movement of the transmission component in the Z-axis direction, the distance between the Hall magnetic component 141 and the Hall element is adjusted to control the triggering of Hall induction, thereby controlling the discharge of the battery. In the case where the battery body 20 falls off, the relative distance between the Hall magnetic component 141 and the Hall element is greater than the triggering distance of Hall induction, and the battery body 20 does not discharge, thereby reducing the risks of battery electrode short circuit and electrochemical corrosion.

[0058] This application also relates to an underwater robot, including the sealed battery described above. For example, the underwater robot may be an underwater booster.

[0059] Exemplarily, the sealed battery according to the embodiment of the present application may be installed on products such as a pool robot and an outboard motor. The present application places no restrictions thereon.

[0060] Finally, it should be noted that the above are only the preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions of the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An underwater sealed battery, characterized in that: The battery cover comprises a battery cover and a battery body, wherein the battery cover is detachably arranged on the top of the battery body to seal the battery body; The battery cover includes a sealing portion, and the sealing portion includes: Battery sealing cover seat; The battery sealing cover seat disassembly seals the edge, wherein the upper surface of the battery sealing cover seat disassembly seals the edge and the bottom of the battery sealing cover seat are fixedly connected by ultrasonic welding, and an annular groove is formed between the outer periphery of the battery sealing cover seat disassembly seals the edge and the outer periphery of the bottom of the battery sealing cover seat; A sealing ring, sleeved on the annular groove; The battery cover also includes: a sealing part fixing piece, which is detachably connected to the battery sealing cover seat and the battery body, and when the sealing part fixing piece is connected to the battery body, the sealing part is accommodated between the sealing part fixing piece and the battery body; The battery body comprises: A battery shell, wherein a groove is provided on the top of the battery shell, the groove accommodates the bottom of the sealing portion and fits with the sealing ring.

2. The sealed battery according to claim 1, characterized in that: The battery cover also includes: A battery cover plate, clamped on the upper side of the sealing part fixing member; The lubricating gasket is sleeved between the battery sealing cover seat and the sealing part fixing piece.

3. The sealed battery according to claim 1, characterized in that: The sealing part fixing member is provided with a first limiting component; The battery sealing cover seat is provided with a second limiting component and a third limiting component; The first limiting component and the second limiting component are buckled together to lock the battery sealing cover seat and the sealing part fixing member along the Z-axis direction; The third limiting component limits the horizontal rotation angle of the sealing portion fixing member relative to the battery sealing cover seat.

4. The sealed battery according to claim 3, characterized in that: The sealing part fixing member is further provided with a fourth limiting component and a fifth limiting component; The ends of the battery housing are provided with a sixth limiting component and a seventh limiting component; The fourth limiting component and the sixth limiting component are buckled to limit the relative movement between the sealing portion fixing member and the battery housing; When the fifth limiting component and the seventh limiting component are buckled, the sealing portion fixing member and the battery housing are restricted from relative movement along the negative direction of the Z axis, and the fourth limiting component and the sixth limiting component are clamped.

5. The sealed battery according to claim 1, characterized in that: The end of the battery housing is provided with an opening, and the battery body further comprises: A battery circuit board is fixed to the top of the battery housing, and the positive and negative springs of the battery circuit board extend from the opening; The herringbone sealing ring is arranged inside the battery housing and is tightly sleeved under the battery circuit board to seal the battery circuit board.

6. The sealed battery according to claim 5, characterized in that: A first cavity is provided at the upper end of the battery sealing cover seat, and a battery cover circuit board is fixed in the first cavity; A first potting layer is disposed in the first cavity, and the first potting layer is disposed above the battery cover circuit board to seal the battery cover circuit board; A second cavity is provided inside the battery housing; A second encapsulation layer is disposed in the second cavity to seal the interior of the battery body.

7. The sealed battery according to claim 6, characterized in that: A Hall magnetic component is arranged at the bottom of the battery cover circuit board, and a Hall element is arranged on the battery circuit board; When the sealing part fixing member is screwed and fixed to the battery body, the Hall magnetic member and the Hall element are located opposite to each other and are within the triggering distance of the Hall induction.

8. An underwater robot, characterized in that: The underwater robot comprises the sealed battery according to any one of claims 1-7.

9. The underwater robot according to claim 8, characterized in that: The underwater robot is an underwater booster.

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