Lightweight battery unit for water sports equipment

Abstract

The utility model discloses a light battery unit for water sports equipment, the battery unit comprises a shell, a battery positioned in the shell, a BMS (Battery Management System) plate which is also positioned in the shell and is connected with the battery, and a switch plate connected with the BMS plate, the shell consists of a bottom shell and an upper cover which is relatively matched with the bottom shell, the shell and the upper cover are matched to form an installation chamber with hollowed-out positions on four sides, the cubic rectangular battery is located in the installation chamber and fixed by the installation chamber, and the hollowed-out positions enable the four sides of the battery to be exposed to form an expansion heat dissipation face which is used for battery expansion and heat dissipation and meets the requirement for visual observation of the battery. The battery unit adopts the design of the hollow protective shell, so that the battery core part is exposed, the heat dissipation performance can be improved, and the observation of the battery state is facilitated. In addition, the battery unit also avoids the volume increase caused by space expansion in the traditional structure, so that the battery assembly can realize higher efficiency under the condition of smaller volume.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water sports equipment, in particular to a lightweight battery unit for water sports equipment. BACKGROUND

[0002] In the application of water sports equipment, the existing technology mainly relies on traditional lithium battery assemblies, which are generally composed of battery cells and protective shells, and the design focuses on the energy storage and use efficiency of the battery. However, as the market's requirements for the performance and safety of water sports equipment are increasingly high, the existing lithium battery assemblies gradually reveal a series of shortcomings in terms of lightweight, heat dissipation, and swelling treatment. These problems not only affect the service life of the battery, but also have a direct impact on the overall performance of the equipment and the user's experience.

[0003] Firstly, the design of traditional lithium battery assemblies usually reserves a certain space inside the protective shell to deal with the thermal expansion of the battery in high-temperature environments. Although this design can reduce the risk of swelling to a certain extent, it inevitably increases the overall volume and weight of the battery, thereby affecting the maneuverability and portability of water sports equipment.

[0004] The heat dissipation performance of the protective shell is often overlooked, which may cause the battery to overheat under high load, which not only reduces the safety and reliability of the battery, but also may cause rapid performance degradation of the battery, and even cause safety hazards such as thermal runaway.

[0005] In addition, the existing lithium battery assemblies have obvious shortcomings in monitoring the state of the battery cells. Although the traditional battery management system (BMS) can provide basic data such as voltage and temperature of the battery, it cannot display the specific health status or potential failure risk of the battery cells in real time and intuitively. The monitoring of the state of the battery cells usually relies on external sensors or is inferred by analyzing the overall performance of the battery pack, which makes it difficult for users to discover and take effective measures in a timely manner when abnormal situations occur, resulting in damage to the battery or safety accidents. This defect further exacerbates the difficulty of maintaining the battery and the safety hazards of using the equipment.

[0006] In view of these shortcomings, it is particularly urgent to develop a new type of lightweight lithium battery assembly. CONTENT OF THE INVENTION

[0007] The purpose of the present application is to at least overcome one of the shortcomings of the prior art, and to provide a lightweight battery unit for water sports equipment. The battery unit adopts a hollow protective shell design, with part of the battery cells exposed, which can improve the heat dissipation performance and help observe the state of the battery. In addition, the battery unit also avoids the increase in volume caused by the swelling space in the traditional structure, so that the battery assembly can achieve higher efficiency in a smaller volume.

[0008] To achieve the above object, the application discloses a lightweight battery unit for water sports equipment, which comprises a shell, a battery located in the shell, a BMS plate also located in the shell and connected with the battery, and a switch plate connected with the BMS plate, wherein the shell is composed of a bottom shell and an upper cover matched with the bottom shell, and the shell and the upper cover form an installation chamber with hollowed-out positions on four sides after being matched, a cuboid battery is located in the installation chamber and fixed by the installation chamber, the hollowed-out positions expose the four sides of the battery, forming an expansion and heat dissipation surface for battery expansion, heat dissipation and visual observation of the battery; the bottom surface of the battery and the inner bottom surface of the bottom shell form a first installation position, and the BMS plate is fixed in the first installation position; the top surface of the battery and the inner bottom surface of the upper cover form a second installation position, and the switch plate is fixed in the second installation position.

[0009] In some embodiments, the battery comprises a plurality of single cells and a packaging film, and the plurality of single cells are tightly arranged and packaged into a complete battery by the packaging film, and the single cells in the battery are connected in series or parallel through nickel strip welding or spot welding to meet the required voltage and capacity requirements.

[0010] In some embodiments, the expansion and heat dissipation surface is provided with a heat sink.

[0011] In some embodiments, the expansion and heat dissipation surface is lower than the outer surface of the shell, forming an anti-collision recess.

[0012] In some embodiments, the shell is provided with an opening at the upper end, and the opening is matched with the upper cover, and the bottom end of the shell is provided with a plug structure, and the plug structure is provided with a conductive spring connected with the BMS plate, and the charging and discharging is realized through the plug.

[0013] In some embodiments, the upper cover is provided with a hollowed-out position as a handle.

[0014] In some embodiments, the upper cover is provided with an indicator light indicating the power and charging state.

[0015] In some embodiments, the upper cover is provided with a control button for sending a control instruction to the BMS plate to start discharging the battery.

[0016] In some embodiments, the BMS plate is installed in the first installation position through a bracket.

[0017] Compared with the prior art, the application has at least one of the following beneficial effects:

[0018] 1. Improved heat dissipation performance: the hollowed-out protective shell design exposes the four sides of the battery, increases the expansion and heat dissipation surface, effectively improves the heat dissipation performance of the battery, and reduces the risk of overheating under high load.

[0019] 2. Lightweight design: By removing the expansion space in traditional battery assemblies, the battery volume is reduced while maintaining high battery efficiency, improving the maneuverability and portability of water sports equipment.

[0020] 3. Easy battery status observation: The hollow protective shell design makes the battery status more visualized, users can easily check the expansion or damage of the battery, find problems in time and take measures, improve the use safety.

[0021] 4. Optimize battery assembly and structure: The compact arrangement of battery, BMS board and switch board makes the battery unit more integrated, reduces the volume, and provides more stable electrical connection and higher component reliability through reasonable installation structure.

[0022] The above listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The specific embodiments will be better understood after reading the detailed description of the embodiments in conjunction with the accompanying drawings, in which the positions, sizes and ranges of the structures shown in the drawings are sometimes not representative of the actual positions, sizes and ranges. In the drawings:

[0024] Fig. 1 is a structural schematic diagram of an embodiment of the present application.

[0025] Fig. 2 is a structural schematic diagram of an embodiment of the present application from another perspective.

[0026] Fig. 3 is an exploded view of an embodiment of the present application.

[0027] Fig. 4 is a structural schematic diagram of a shell in an embodiment of the present application.

[0028] Fig. 5 is a structural schematic diagram of a bottom shell in an embodiment of the present application.

[0029] Fig. 6 is a structural schematic diagram of an upper cover in an embodiment of the present application.

[0030] Fig. 7 is a structural schematic diagram of a battery in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It is understood that the present disclosure can be presented in many different forms and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and to fully inform those skilled in the art of the scope of protection of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0032] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the dimensions of some features can be distorted for the sake of clarity.

[0033] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.

[0034] The singular forms "a", "said" and "the" used in the specification, unless clearly indicated otherwise, include plural forms. The words "include", "comprise" and "contain" used in the specification mean the presence of the claimed feature, but do not exclude the presence of one or more other features. The word "and / or" used in the specification includes any and all combinations of one or more of the related listed items. Embodiments

[0035] Referring to the accompanying drawings, Figs. 1-7 The present embodiment discloses an exemplary structure of a lightweight battery unit for water sports equipment, which is designed to provide an efficient and reliable power source with good heat dissipation performance and safety.

[0036] Referring to the accompanying drawings, Figs. 1-3 The battery unit of the present embodiment mainly includes a housing 1, a battery 2, a BMS board 3, and a switch board 4.

[0037] In terms of specific structure,

[0038] Referring to the accompanying drawings, Fig. 3 The housing 1 of the battery unit is composed of a bottom shell 101 and an upper cover 102 that cooperates with the bottom shell 101. After the bottom shell 101 cooperates with the upper cover 102, an installation chamber 103 with a hollow part is formed. This installation chamber 103 is used to accommodate the battery 2, the BMS board 3, and the switch board 4, etc.

[0039] It needs to be understood that the hollow design of the installation chamber 103 exposes four sides of the battery, forming an expansion heat dissipation surface 201, which not only provides sufficient heat dissipation space, but also allows users to visually observe the state of the battery 2 to improve safety in use. The expansion heat dissipation surface 201 of the battery 2 plays a triple function of expansion, heat dissipation and observation, which helps to improve the safety and durability of the battery.

[0040] In the present embodiment, the battery 2 includes a plurality of single cells which are tightly arranged by nickel strip welding or spot welding and are integrally packaged into a complete battery 2 by a packaging film. Specifically, the material selection of the packaging film takes into account the protection requirements of the battery, while having a certain buffering effect on external physical impact. More specifically, the single cells connected by nickel strip welding or spot welding can realize series or parallel electrical connection to meet the voltage and capacity requirements of water sports equipment.

[0041] On the basis of the above structure, the bottom surface of the battery 2 cooperates with the inner bottom surface of the bottom shell 101 to form a first mounting position for fixing the BMS board 3. The BMS board 3 is mainly used for management and protection of the battery, to ensure the stability and safety of the battery 2 during charging and discharging.

[0042] More specifically, the BMS board 3 is fixed in the first mounting position by a support 301, which can effectively support the BMS board 3 and ensure that it does not displace or loosen during operation.

[0043] On the basis of the above structure, the top surface of the battery 2 cooperates with the inner bottom surface of the upper cover 102 to form a second mounting position for fixing the switch board 4. The switch board 4 controls the charging and discharging state of the battery 2 by connecting with the BMS board 3, to ensure normal operation of the battery. The design of the switch board 4 makes the entire battery unit easy to operate and can be started and stopped as needed.

[0044] As an optional technical solution, the expansion heat dissipation surface 201 of the battery unit can be provided with a heat sink (not shown in the figure), to further improve the heat dissipation effect. The material of the heat sink is usually selected from high thermal conductivity materials such as aluminum alloy or copper, which can quickly dissipate the heat generated in the battery to the outside to avoid damage to the battery due to overheating.

[0045] In addition, the expansion heat dissipation surface 201 of the battery unit is slightly lower than the outer surface of the shell 1, forming an anti-collision recess. This design helps to prevent the battery 2 from being damaged when subjected to external impact, while also providing additional space for heat dissipation.

[0046] On the basis of the above structure, the bottom end of the shell 1 is also designed with a plug structure 104, and the plug structure 103 is provided with a conductive spring sheet connected with the BMS board 3. The design of the plug structure 104 facilitates the charging and discharging connection of the battery unit, and the user can realize the charging and discharging operation of the battery through the plug structure. The conductive spring sheet of the plug structure ensures reliable conduction of current and has good contact elasticity, effectively avoiding the problem of current interruption caused by poor contact.

[0047] It needs to be understood that the upper cover 102 part is designed with multiple practical functions. First of all, the hollow position 105 as a handle makes the battery unit more convenient during use, and the user can easily carry or operate the battery unit. In addition, the upper cover 102 of the shell 1 is provided with an indicator lamp indicating the power and charging state, which can real-time feedback the working state of the battery, helping the user to understand the remaining power and charging progress of the battery 2. In order to increase the operation convenience, the upper cover is also provided with a control button for sending control instructions to the BMS board 3 to start the discharging process of the battery 2. The design of the button ensures that the user can quickly start and stop the discharging operation of the battery 2 according to needs.

[0048] Through the above design, the battery unit of the embodiment not only has the characteristics of light weight and strong heat dissipation, but also can ensure the stability and safety of the battery during use through reasonable structure design, and has good user operation experience. This design makes the battery unit very suitable for water sports equipment, which can provide reliable and efficient power support.

[0049] The embodiment describes in detail the design and working principle of the light weight battery unit for water sports equipment, and improves the use performance, heat dissipation capacity and safety of the battery through various innovative designs, which provides strong support for practical application.

[0050] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is limited by the additional claims, and the equivalents of these claims are also included.

Claims

1. A lightweight battery unit for a water sport device, characterized by, The battery unit comprises a shell, a battery in the shell, a BMS plate also in the shell and connected with the battery, and a switch plate connected with the BMS plate, wherein the shell is composed of a bottom shell and an upper cover matched with the bottom shell, the shell and the upper cover form an installation chamber with hollowed-out positions on four sides after being matched, the cuboid battery is located in the installation chamber and fixed by the installation chamber, the hollowed-out positions expose the four sides of the battery, forming an expansion and heat dissipation surface for battery expansion, heat dissipation and visual observation.

2. A lightweight battery unit for a water sport device as defined in claim 1, characterized in that: The battery comprises a plurality of single battery cells and a packaging film, the plurality of single battery cells are tightly arranged and packaged into a complete battery by the packaging film, the single battery cells in the battery are connected in series or parallel through nickel strip welding or spot welding to meet the required voltage and capacity requirements.

3. A lightweight battery unit for a water sport device as defined in claim 1, characterized in that: The expansion and heat dissipation surface is provided with a cooling fin.

4. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The expansion and heat dissipation surface is lower than the outer surface of the shell, forming an anti-collision recess.

5. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The shell is open at the upper end, the opening is matched with the upper cover, the bottom end of the shell is provided with a plug structure, the plug structure is provided with a conductive spring connected with the BMS plate, and the charging and discharging is realized through the plug.

6. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The upper cover is provided with a hollowed-out position as a handle.

7. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The upper cover is provided with an indicator light indicating the power and charging status.

8. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The upper cover is provided with a control button for sending a control instruction to the BMS plate to start the battery discharging.

9. A lightweight battery unit for a water sport device as defined in claim 1, characterized by: The BMS plate is installed in the first installation position through a bracket.

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