Underwater sealed battery and underwater robot

Abstract

The invention provides an underwater sealed battery. The underwater sealed battery comprises a battery cover body and a battery body, the battery cover body is detachably arranged at the top of the battery body so as to seal the battery body; the battery cover body comprises a sealing part and a sealing part fixing piece; and the sealing part comprises a battery sealing cover seat, a battery sealing cover seat detachable sealing edge and a sealing ring. The upper surface of the battery sealing cover seat detachable sealing edge is fixedly connected with the bottom of the battery sealing cover seat through ultrasonic welding, and an annular groove is formed between the periphery of the battery sealing cover seat detachable sealing edge and the periphery of the bottom of the battery sealing cover seat. And the sealing ring is sleeved on the annular groove. The battery body comprises a battery shell. And a groove is formed in the top of the battery shell. The groove accommodates the bottom of the sealing part and is attached to the sealing ring. The sealed battery provided by the invention is convenient to disassemble, and sealing parts are locked mutually and are not easy to lose. The annular groove is formed through ultrasonic welding, so that the inner surface of the annular groove has no parting line, the fitting degree of the sealing ring and the annular groove is improved, and the sealing effect is improved.

Description

Technical Field

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

[0002] For underwater operation equipment, such as underwater cleaning robots and underwater boosters, it is necessary to operate underwater for a long time. The power supply batteries of these equipment are often rechargeable batteries for recycling. In order to ensure the safety and stability of underwater operations, there are high requirements for the sealing of power supply batteries. Existing underwater sealed batteries are generally sealed by glue filling, or the power supply batteries are sealed by a sealed shell.

[0003] The inventor of the present application has found that if the outer shell of a sealed battery using glue filling is damaged, the sealing layer is easily damaged, resulting in sealing failure. The power supply battery sealed by a sealed shell is not sealed, and the sealing component may be lost when the internal battery is disassembled and replaced. If the battery is accidentally exposed to water during replacement, it may be short-circuited and damaged.

[0004] The contents of the background technology section are merely the technologies known to the public and do not necessarily represent the existing technologies in the 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 above-mentioned sealed batteries using glue injection and power supply batteries sealed using sealed shells.

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

[0007] The sealing part includes a battery sealing cover seat, a battery sealing cover seat disassembly seal and a sealing ring. The upper surface of the battery sealing cover seat disassembly seal 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 seal and the outer periphery of the bottom of the battery sealing cover seat. The sealing ring is sleeved in the annular groove. The sealing part fixing part is detachably connected to the battery sealing cover seat and to the battery body. When the sealing part fixing part is connected to the battery body, the sealing part is accommodated between the sealing part fixing part and the battery body. The battery body includes a battery shell, and a groove is provided on the top of the battery shell. The groove accommodates the bottom of the sealing part and fits with the sealing ring.

[0008] Optionally, the battery cover further comprises a battery cover plate and a lubricating gasket. The battery cover plate is clamped on the upper side of the sealing part fixing piece, and the lubricating gasket is sleeved between the battery sealing cover seat and the sealing part fixing piece.

[0009] Optionally, the sealing part fixing member is provided with a first limiting member. The battery sealing 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 sealing cover seat and the sealing part fixing member along the Z-axis direction. The third limiting member limits the horizontal rotation angle of the sealing part fixing member relative to the battery sealing cover seat.

[0010] Optionally, the sealing part fixing member is further provided with a fourth limiting member and a fifth limiting member. The ends of the battery housing are 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 of the sealing part fixing member and the battery housing. When the fifth limiting member and the seventh limiting member are buckled, the relative movement of the sealing part fixing member and the battery housing along the negative direction of the Z axis is limited, and the fourth limiting member and the sixth limiting member are clamped.

[0011] Optionally, an opening is provided at the end of the battery housing. The battery body further comprises a battery circuit board. The positive and negative shrapnel of the battery circuit board extend from the opening at the end of the battery housing. The battery body further comprises a herringbone sealing ring. 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.

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

[0013] Optionally, a Hall magnet is provided at the bottom of the battery cover circuit board of the battery. The battery circuit board is provided with a Hall element. When the sealing part fixing piece is screwed and fastened with the battery sealing cover seat, the Hall magnet and the Hall element are opposite to each other and the relative distance is not greater than the trigger distance of the Hall induction.

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

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

[0016] This application has the following beneficial effects.

[0017] The underwater sealed battery provided by the present application has a detachable design of the battery cover and the battery body, which is convenient for disassembling the battery. Adjacent parts of the battery cover can be locked with each other, so that the individual parts in the battery cover are not easily lost. The annular groove is formed by ultrasonic welding, 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 the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the disassembled structure of a sealed battery according to an embodiment of the present application is shown; Figure 2 A schematic diagram of the structure of a sealed battery according to an embodiment of the present application is shown; Figure 3 A schematic structural diagram showing a battery cover from one viewing angle of an embodiment of the present application; Figure 4 A partially disassembled schematic diagram of a battery body from one perspective of an embodiment of the present application is shown; Figure 5 A cross-sectional schematic diagram of a battery body from one viewing angle of an embodiment of the present application is shown.

[0020] Description of reference numerals: Battery cover 10, sealing part 11, lubricating gasket 12, sealing part fixing part 13, battery cover circuit board 14, battery cover cover plate 15, battery body 20, battery shell 21, battery sealing cover seat 111, battery sealing cover seat disassembly edge sealing 112, sealing ring 113, Hall magnetic part 141, first limiting component 131, second limiting component 1111, fourth limiting component 132, fifth limiting component 133, first cavity 1112, sixth limiting component 211, seventh limiting component 212, negative electrode spring piece 2021, positive electrode spring piece 2022, herringbone sealing ring 201, circuit board 202, second cavity 213. DETAILED DESCRIPTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many 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 comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0022] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of these specific details, or other modes, components, materials, devices, etc. may be adopted. In these cases, known structures, methods, devices, implementations, materials or operations will not be shown or described in detail.

[0023] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0024] The terms "first", "second" and the like 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.

[0025] The following is a clear and complete description of the technical solution of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] According to an example embodiment, Figure 1 and Figure 2 As shown, the present application provides an underwater sealed battery.

[0027] The sealed battery includes a battery cover 10 and a battery body 20. The battery cover 10 is detachably disposed on the top of the battery body 20 to seal the battery body 20. The battery cover 10 includes a sealing portion 11 and a sealing portion fixing member 13.

[0028] The sealing part 11 includes a battery sealing cover seat 111, a battery sealing cover seat disassembly sealing edge 112 and a sealing ring 113. The upper surface of the battery sealing cover seat disassembly sealing edge 112 is fixedly connected to the bottom of the battery sealing cover seat 111 by ultrasonic welding, and an annular groove is formed between the outer periphery of the battery sealing cover seat disassembly sealing edge 112 and the outer periphery of the bottom of the battery sealing cover seat 111.

[0029] The sealing ring 113 is sleeved in the annular groove. The sealing part fixing member 13 is sleeved above the battery sealing cover seat 111 and is detachably connected to the battery body 20. The battery body 20 includes a battery housing 21. A groove is provided on the top of the battery housing 21. The groove accommodates the bottom of the sealing part 11 and fits the sealing ring 113.

[0030] For example, the battery cover 10 and the battery housing 21 may be made of ABS (Acrylonitrile-Butadiene-Styrene, ABS for short). The battery cover 10 and the battery body 20 may be detachably connected in a threaded connection. 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 through the clamping effect of the threads.

[0031] For example, the battery cover 10 and the battery body 20 can be detachably connected by riveting. For example, the battery cover 10 and the battery body 20 are provided with tenons and mortises that can be nested with each other, so that the battery cover 10 and the battery body 20 can be detachably connected together.

[0032] For example, the battery cover 10 and the battery body 20 can be detachably connected in a buckle connection. For example, by providing a buckle structure that can buckle with each other on the battery cover 10 and the battery body 20, the battery cover 10 and the battery body 20 can be detachably connected. When the battery cover 10 and the battery body 20 are screwed together, the battery cover 10 covers and seals the battery end of the battery body 20 with exposed electrodes.

[0033] For example, the sealing ring 113 may be a rubber ring, and the contact surface between the sealing ring 113 and the groove at the top of the battery housing 21 may form a certain angle with the groove. When the battery sealing cover 111 moves downward, the compression amount of the groove at the top of the battery housing 21 on the sealing ring 113 will increase, thereby improving the fit between the sealing ring 113 and the groove, thereby improving the sealing performance.

[0034] Through the above embodiment, the sealing ring 113 and the groove are combined to form a radial seal. The upper surface of the battery sealing cover seat disassembly sealing edge 112 and the bottom of the battery sealing cover seat 111 can be fixedly connected by ultrasonic welding to form a complete part. Through ultrasonic welding, the parting line of the battery sealing cover seat 111 is at the root of the battery sealing cover seat 111 or the tip of the draft, 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 fit between the sealing ring 113 and the annular groove, thereby improving the sealing effect.

[0035] According to an example embodiment, Figure 1As shown, the battery cover 10 further includes a battery cover plate 15 and a lubricating gasket 12. The battery cover plate 15 is clamped on the top of the sealing part fixing member 13. The lubricating gasket 12 is sleeved between the battery sealing cover seat 111 and the sealing part fixing member 13.

[0036] For example, the material of the battery cover plate 15 may be ABS engineering plastics. The battery cover plate 15 may shield and protect the battery cover circuit board 14 inside the battery sealing cover seat 111. The lubricating gasket 12 may be a metal annular gasket.

[0037] Through the above embodiment, a lubricating gasket 12 is arranged between the sealing part fixing member 13 and the battery sealing cover seat 111. This embodiment can reduce the friction between the sealing part fixing member 13 and the battery sealing cover seat 111, reduce the resistance encountered by the sealing part fixing member 13 when rotating, and further facilitate the screwing operation of the sealing part fixing member 13.

[0038] According to an example embodiment, Figure 1 As shown, the sealing part fixing member 13 is provided with a first limiting member 131. The battery sealing cover seat 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 together to lock the battery sealing cover seat 111 and the sealing part fixing member 13 along 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 seat 111.

[0039] For example, the first limiting component 131 may be a first set of projections arranged at intervals. The second limiting component 1111 may be a second set of projections arranged at intervals. The first set of projections and the second set of projections are buckled one by one. After the first set of projections and the second set of projections are buckled, the battery sealing cover seat 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.

[0040] The third limiting component can be a convex block provided on the battery sealing cover seat 111. During the horizontal rotation of the sealing part fixing member 13, the first limiting component 131 and the second limiting component 1111 are relatively displaced in the horizontal direction. When the sealing part fixing member 13 rotates to the maximum horizontal rotation angle, the first limiting component 131 and the third limiting component contact each other, 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.

[0041] Through the above embodiment, a limiting component is provided on the sealing part fixing member 13 and the battery sealing cover seat 111. The solution of this embodiment helps the battery sealing cover seat 111 and the sealing part fixing member 13 not to be separated from each other along the Z-axis direction, and the sealing part fixing member 13 and the battery sealing cover seat 111 can rotate freely within a fixed angle in the horizontal direction.

[0042] According to an example embodiment, as shown in FIG. 1 and Figure 3 As shown, the sealing part fixing member 13 is also provided with a fourth limiting member 132 and a fifth limiting member 133. The end of the battery housing 21 is provided with a sixth limiting member 211 and a seventh limiting member 212. The fourth limiting member 132 can be buckled with the sixth limiting member 211 to limit the relative movement of the sealing part fixing member 13 and the battery housing 21. The fifth limiting member 133 can be buckled with the seventh limiting member 212 to limit the relative movement of the sealing part fixing member 13 and the battery housing 21 along the Z-axis direction. After the fourth limiting member 132 and the sixth limiting member 211 are clamped, the fifth limiting member 133 and the seventh limiting member 212 are clamped accordingly.

[0043] For example, the fourth limiting component 132 may be a groove group arranged at intervals. The sixth limiting component 211 may be a third protrusion group arranged at intervals. The groove group and the third protrusion group are buckled one by one. The fifth limiting component 133 may be a fourth protrusion group. The seventh limiting component 212 may be a fifth protrusion group. After the groove group and the third protrusion group are buckled one by one, the fourth protrusion group and the fifth protrusion group are clamped.

[0044] By providing limiting components at the ends of the sealing portion fixing member 13 and the battery housing 21 , the battery cover 10 and the battery body 20 can be locked and fixed.

[0045] According to an example embodiment, Figure 1 and Figure 4 As 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 herringbone sealing ring 201. The battery circuit board 202 is fixed to the top of the inside of the battery housing 21. The positive electrode spring piece 2022 and the negative electrode spring piece 2021 of the battery circuit board 202 extend from the opening. The herringbone sealing ring 201 is provided inside the battery housing 21 and is tightly sleeved under the battery circuit board 202 to seal the battery circuit board 202.

[0046] For example, the shape of the herringbone seal ring 201 matches the electrode distribution shape of the battery circuit board 202. The herringbone seal ring 201 can be a rubber ring, which can perform end face sealing on the bottom end of the battery circuit board 202.

[0047] According to an example embodiment, Figure 1As shown, the upper end of the battery sealing cover 111 is provided with a first cavity 1112. The battery cover circuit board 14 and the first potting layer are fixed in the first cavity 1112. The first potting layer is arranged above the battery cover circuit board 14 to seal the battery cover circuit board 14.

[0048] For example, the first potting layer can be made by potting with a potting resin. The battery cover circuit board 14 is potted in the first cavity 1112 to seal and protect the battery cover circuit board 14.

[0049] According to an example embodiment, Figure 5 As shown, a second cavity 213 is disposed inside the battery housing 21 . A second encapsulation layer is disposed inside the second cavity 213 , and the second encapsulation layer seals the interior of the battery body 20 .

[0050] For example, the second encapsulation layer can be made by encapsulating with an encapsulating resin glue. The second encapsulation layer can seal and protect the battery body 20 .

[0051] According to an example embodiment, Figure 1 and Figure 4 As shown, a Hall magnet 141 is provided at the bottom of the battery cover circuit board 14 of the battery, and a Hall element is provided on the battery circuit board 202. After the sealing part fixing part 13 is screwed and fastened with the battery sealing cover seat 111, the Hall magnet 141 and the Hall element are opposite to each other and the relative distance is not greater than the triggering distance of the Hall induction. After the battery cover 10 and the battery body 20 are fixed and tightened, the Hall induction is triggered and the battery is discharged. After the battery cover 10 is separated from the battery body 20, the Hall induction is not triggered and the battery is not discharged.

[0052] For example, the battery circuit board 202 may also be provided with a transmission component, and the Hall magnetic component 141 is fixed to the transmission component. The distance of the Hall magnetic component 141 relative to the Hall element is adjusted by adjusting the transmission component to move along the Z-axis direction to control the triggering of the 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 the Hall induction, and the battery body 20 does not discharge, thereby reducing the risk of short circuit and electrochemical corrosion of the battery electrodes.

[0053] The present application also relates to an underwater robot, comprising the sealed battery described above. For example, the underwater robot may be an underwater booster.

[0054] For example, the sealed battery of the embodiment of the present application can be installed in products such as swimming pool robots and electric outboard motors, and the present application does not impose any limitation on this.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions of the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles 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.

Images