Battery protection shell structure, battery and unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to a battery protection shell structure, a battery and an unmanned aerial vehicle. The battery protection shell structure comprises a shell, an electric conductor and a PCB (Printed Circuit Board), a placing cavity is formed in the shell; the PCB is arranged in the inner part of the placing cavity; the conductor comprises a first connecting section and a second connecting section which are connected with each other; the first connecting section is arranged in the shell; and one end of the second connecting section extends towards the placing cavity and is connected to the PCB. According to the protective shell structure, the overall mechanical performance of the protective shell structure can be effectively improved, so that the falling performance and the vibration performance of the protective shell structure when the protective shell structure is used for a battery are improved, and the overall use safety and stability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of drone technology, and in particular relates to a battery protective shell structure, a battery, and a drone. Background Technology

[0002] Drones are mainly classified into electric drones and gasoline-powered drones based on their power source. Electric drones are widely used in many fields due to their advantages such as high stability, high reliability, reusable batteries, and low carbon emissions. The batteries used in drones consist of multiple cells connected in series and arranged side by side within a battery casing.

[0003] However, the mechanical strength of the assembly between components such as the PCB, gold fingers and battery cell body in most existing drone battery casings is low, resulting in poor overall structural stability and safety in use. Utility Model Content

[0004] The purpose of this utility model is to provide a battery protective shell structure that addresses the shortcomings of existing technologies, thereby solving the technical problems of poor overall structural stability and safety in use of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery protective case structure includes a housing, a conductor, and a PCB board; the housing has a placement cavity; the PCB board is disposed inside the placement cavity; the conductor includes a first connecting segment and a second connecting segment connected to each other; the first connecting segment is disposed inside the housing; one end of the second connecting segment extends toward the placement cavity and is connected to the PCB board.

[0007] Preferably, the housing is made of PC plastic or PSF material;

[0008] And / or the material of the first connecting segment body is the same as the material of the shell;

[0009] And / or the material of the second connecting segment body is the same as the material of the housing.

[0010] Preferably, the PCB board includes a first side plate and a second side plate arranged side by side, and a connecting plate connecting the first side plate and the second side plate; the first side plate is connected to the second connecting section; the second side plate is used to connect to the battery cell structure.

[0011] Preferably, the first side plate is provided with an assembly hole corresponding to the second connecting segment; one end of the second connecting segment is welded to the inside of the assembly hole.

[0012] Preferably, an assembly gap is provided between the first side plate, the second side plate, and the connecting plate; the assembly gap is used to allow the electrode body of the battery cell structure to pass through.

[0013] Preferably, both the outer surfaces of the first connecting segment and the second connecting segment are provided with a metal coating; and the metal coating on the first connecting segment is connected to the metal coating on the second connecting segment; the metal coating on the second connecting segment is soldered to the PCB board; and the metal coating on the first connecting segment is in communication with the outside of the housing.

[0014] Preferably, the housing has an internal mounting channel; the mounting channel communicates with the placement cavity; the first connecting section is sealed to the interior of the mounting channel; and the end of the first connecting section away from the second connecting section has a bent section; the end of the bent section away from the first connecting section has a reinforcing section; the reinforcing section extends along the width direction of the mounting channel.

[0015] This utility model also discloses a battery, including a first battery cell, a second battery cell, an insulating plate, a buffer block, and the battery protective shell structure described above; the buffer block is disposed at the inner bottom of the PCB board; the first battery cell, the second battery cell, and the insulating plate are all disposed inside the placement cavity; and the insulating plate is disposed between the first battery cell and the second battery cell; one side of the first battery cell is connected to the PCB board and disposed between the PCB board and the buffer block; one side of the second battery cell is connected to the PCB board and disposed between the PCB board and the buffer block.

[0016] Preferably, the first battery cell includes a first body and a first mounting shell; the first mounting shell is provided with a first connecting metal; the first body is connected to the interior of the first mounting shell; and a first assembly groove is provided between the first body and the first mounting shell; the bottom of the inner surface of the PCB board is disposed inside the first assembly groove; and the first connecting metal is connected to the inner surface of the PCB board.

[0017] And / or, the second cell includes a second body and a second mounting shell; the second mounting shell is provided with a second connecting metal; the second body is connected to the interior of the second mounting shell; and a second assembly groove is provided between the second body and the second mounting shell; the top of the inner surface of the PCB board is located inside the second assembly groove; the second connecting metal is connected to the inner surface of the PCB board.

[0018] This utility model also discloses a drone, including the aforementioned battery.

[0019] The beneficial effects of this utility model are that, by using a segmented conductor formed by the first connecting segment and the second connecting segment as a metal finger, the assembly stability between the metal finger and the shell and the PCB board can be improved, thereby effectively improving the overall mechanical performance of the protective shell structure, reducing the risk of breakage and damage, and solving the problem of frequent replacement of the internal structure of the shell; it is also beneficial to improve the drop performance and vibration performance of the protective shell structure when used for batteries, thus improving the overall safety and stability of use. Attached Figure Description

[0020] The following will refer to the appendix. Figures 1-6 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0021] Figure 1 This is an exploded view of the battery protective shell structure according to an embodiment of the present invention;

[0022] Figure 2 This is a partially enlarged view of the battery protective shell structure according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the PCB board structure of a battery protective shell according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the conductive body of a battery protective shell structure according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a battery according to an embodiment of the present invention;

[0026] Figure 6 This is an exploded view of a battery according to an embodiment of the present invention.

[0027] In the diagram: 100-Housing shell; 110-Lower housing; 120-Cover plate; 101-Placement cavity; 102-Mounting groove; 103-Mounting channel; 104-Protrusion; 2-Conductor; 201-Metal coating; 21-First connecting section; 22-Second connecting section; 23-Reinforcing section; 24-Bending section; 3-PCB board; 31-First side plate; 311-Assembly hole; 312-Mounting groove; 32-Second side plate; 33-Connecting plate; 301-Assembly gap; 400-Buffer block; 500-Insulating plate; 600-First battery cell; 610-First body; 620-First mounting shell; 601-First assembly groove; 602-First connecting metal; 700-Second battery cell; 710-Second body; 720-Second mounting shell; 701-Second assembly groove; 702-Second connecting metal. Detailed Implementation

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] The following is in conjunction with the appendix Figures 1-6 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0034] like Figure 1 and 2As shown in one embodiment of this utility model, the battery protective shell structure includes a shell 100, a conductor 2, and a PCB board 3. The shell 100 has a placement cavity 101 inside. The PCB board 3 is disposed inside the placement cavity 101. The conductor 2 includes a first connecting segment 21 and a second connecting segment 22 connected to each other. The first connecting segment 21 is disposed inside the shell 100. One end of the second connecting segment 22 extends towards the placement cavity 101 and is connected to the PCB board 3. The PCB board 3 is used for cell structure connection. The first connecting segment 21 and the second connecting segment 22 are vertically arranged. The first connecting segment 21 extends along the height direction of the shell 100. The second connecting segment 22 extends along the horizontal direction of the shell 100.

[0035] The technical solution of this utility model uses a segmented conductor formed by the first connecting segment and the second connecting segment as a metal finger, which can improve the assembly stability between the metal finger and the shell and the PCB board respectively. This can effectively improve the overall mechanical performance of the protective shell structure, reduce the risk of breakage and damage, and solve the problem of frequent replacement of the internal structure of the shell. It is also beneficial to improve the drop performance and vibration performance of the protective shell structure when used for batteries, thereby improving the overall safety and stability of use.

[0036] Specifically, in some embodiments, the housing 100 is made of PC (polycarbonate) plastic or PSF (polysulfone) material. Polysulfone is also a high-performance engineering plastic with good mechanical properties, electrical insulation properties, and heat resistance. Furthermore, polysulfone's transparency and impact resistance are similar to PC. For example... Figure 1 and 2As shown, the housing 100 includes a lower housing 110 and a cover plate 120 connected to the upper end of the lower housing 110; and a placement cavity 101 is formed between the lower housing 110 and the cover plate 120; a first connecting section 21 is disposed inside the inner wall of the lower housing 110. That is to say, the housing 100 made of PC (polycarbonate) plastic or PSF (polysulfone) material has the following characteristics: 1. Mechanical properties: PC (polycarbonate) plastic or PSF (polysulfone) material has high strength, fatigue resistance, dimensional stability, and low creep. Even under high temperature conditions, its changes are very small; 2. Heat aging resistance: The reinforced PC (polycarbonate) plastic or PSF (polysulfone) material has a high UL temperature index, typically between 120-140℃. It also has good long-term outdoor aging performance; 3. Solvent resistance: PC plastic will not cause stress cracking when in contact with most solvents; 4. Water stability: Although PC plastic is easily decomposed by water at high temperature, it has good water stability under normal conditions; 5. Electrical properties: PC (polycarbonate) plastic or PSF (polysulfone) material has excellent insulation properties and can maintain stable electrical properties even in humid or high temperature environments. Its dielectric constant is typically between 3.0 and 3.2, and its arc resistance can reach 120s; 6. Molding and processability: PC plastic can be injection molded or extruded using ordinary equipment; however, due to its poor flow characteristics, the injection molding process may be difficult; 7. Optical properties: PC (polycarbonate) plastic or PSF (polysulfone) material has a light transmittance of over 90%, exhibiting excellent optical properties; 8. Weather resistance: PC plastic has a certain resistance to ultraviolet radiation; 9. Chemical stability: PC plastic has good resistance to aliphatic hydrocarbons, oils, and most alcohols, and can also withstand dilute acids, salts, and oxidants; 10. Flame retardancy: PC plastic has good flame retardant properties, and its flame retardant performance can be further improved by adding flame retardants; 11. Abrasion resistance: PC (polycarbonate) plastic or PSF (polysulfone) material has certain abrasion resistance.

[0037] Specifically, in some embodiments, the PCB board 3 (Printed Circuit Board) includes a first side plate 31 and a second side plate 32 arranged side by side, and a connecting plate 33 connecting the first side plate 31 and the second side plate 32; the first side plate 31 is connected to the second connecting section 22; the second side plate 32 is used to connect to the battery cell structure. That is, the first side plate 31, the second side plate 32, and the connecting plate 33 form a U-shaped PCB composite board structure, which facilitates assembly, ensures assembly stability, and improves safety in use. The first side plate 31 and the second side plate 32 are both printed circuit boards; and the printed circuit board is an important electronic component, serving as the support for electronic components and the carrier for electrical connections between electronic components. Specifically, in some embodiments, such as... Figure 2and 3 As shown, the first side plate 31 has an assembly hole 311 corresponding to the second connecting section 22; one end of the second connecting section 22 is welded to the inside of the assembly hole 311. That is, by welding the conductor 2 (metal finger) to one side of the PCB board 3; and assembling the other side of the PCB board 3 with the battery cell structure, the assembly stability between the metal finger and the casing and the PCB board is improved, thereby effectively improving the overall mechanical performance of the protective shell structure. This, in turn, helps to improve the drop and vibration performance of the protective shell structure when used in batteries, improving overall safety and stability. Furthermore, as... Figure 1 , 2 As shown in Figure 3, the lower housing 110 has a protrusion 104 inside; the protrusion 104 has an installation groove 102 outside; the bottom of the first side plate 31 has an installation groove 312 corresponding to the protrusion 104; so as to realize installation in more different assembly environments, improve the convenience of carrying and replacement; and improve the convenience of assembly.

[0038] Specifically, in some implementations, such as Figure 2 and 3 As shown, an assembly gap 301 is provided between the first side plate 31, the second side plate 32, and the connecting plate 33; the assembly gap 301 is used to allow the electrode body of the battery cell structure to pass through. This structure can improve the ease of assembly with the battery cell structure and ensure the structural stability of the PCB board 3 itself.

[0039] Specifically, in some implementations, such as Figure 2 and 4As shown, both the outer surfaces of the first connecting segment 21 and the second connecting segment 22 are provided with a metal coating 201; the metal coating 201 on the first connecting segment 21 and the metal coating 201 on the second connecting segment 22 are connected to each other; the metal coating 201 on the second connecting segment 22 is soldered to one side of the PCB board 3 (the mounting hole 311 of the first side plate 31); the metal coating 201 on the first connecting segment 21 is in communication with the outside of the housing 100. The metal coating 201 is selected from nickel, copper, or tin coatings. Since nickel, copper, or tin coatings can improve welding performance and corrosion resistance, this structure can improve the assembly stability between the conductor 2 and the PCB board 3. The material of the first connecting segment 21 and / or the material of the second connecting segment 22 is the same as the material of the housing 100; and the material of the first connecting segment 21 and / or the material of the second connecting segment 22 is selected from PC (polycarbonate) plastic or PSF (polysulfone) material. Furthermore, the materials of the first connecting segment 21 and the second connecting segment 22 are the same as those of the housing 100; the coating area of ​​the metal coating 201 is smaller than the sum of the areas of the outer surfaces of the first connecting segment 21 and the second connecting segment 22. In other words, after the first connecting segment 21 and the second connecting segment 22 are processed, they are positioned and fixed on the mold for processing the lower housing 110, and then cast to form the lower housing 110. This achieves the integration of the body parts of the first connecting segment 21 and the second connecting segment 22 with the lower housing 110, thereby improving assembly stability and effectively enhancing the overall mechanical properties of the protective shell structure. Therefore, this is beneficial for improving the drop and vibration performance of the protective shell structure when used in batteries, thus improving overall safety and stability.

[0040] Specifically, in some implementations, such as Figure 2 and 4 As shown, the housing 100 (lower housing 110) has an internal mounting channel 103; the mounting channel 103 communicates with the placement cavity 101; the first connecting section 21 is sealed to the opening of the mounting channel 103; and the end of the first connecting section 21 away from the second connecting section 22 has a bent section 24; the end of the bent section 24 away from the first connecting section 21 has a reinforcing section 23; the reinforcing section 23 extends along the width direction of the mounting channel 103. This structure, through the bent section 24 and the reinforcing section 23, can improve the overall structural stability of the conductor 2, which is beneficial to improving the drop and vibration performance of the battery pack. The metal coating 201 covers both the bent section 24 and the reinforcing section 23.

[0041] This utility model also proposes a battery, such as Figure 5 and 6As shown, the battery includes a first cell 600, a second cell 700, an insulating plate 500, and a buffer block 400 (the buffer block 400 can be made of EVA material), as well as a battery protective shell structure. The buffer block 400 is disposed at the inner bottom of the PCB board 3. The first cell 600, the second cell 700, and the insulating plate 500 are all disposed inside the placement cavity 101. The insulating plate 500 is disposed between the first cell 600 and the second cell 700. One end of the first cell 600 is connected to the bottom of the inner surface of the PCB board 3 and is disposed between the PCB board 3 and the buffer block 400. One end of the second cell 700 is connected to the top of the inner surface of the PCB board 3 and is disposed between the PCB board 3 and the buffer block 400. The specific structure of the battery protective shell structure is as described in the above embodiments. Since this battery adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0042] Specifically, in some implementations, such as Figure 6 As shown, the first battery cell 600 includes a first body 610 and a first mounting shell 620; the first mounting shell 620 is provided with a first connecting metal 602 (positive electrode tab and / or negative electrode tab); the first body 610 is connected to the interior of the first mounting shell 620; and a first assembly groove 601 is provided between the first body 610 and the first mounting shell 620; the bottom of the inner surface of the PCB board 3 (the first side plate 31) is located inside the first assembly groove 601; the first connecting metal 602 is bent toward the PCB board 3 (the first side plate 31) and connected to the inner surface of the PCB board 3 (the first side plate 31). The second battery cell 700 includes a second body 710 and a second mounting shell 720; the second mounting shell 720 is provided with a second connecting metal 702 (positive electrode tab and / or negative electrode tab); the second body 710 is connected to the interior of the second mounting shell 720; and a second mounting groove 701 is provided between the second body 710 and the second mounting shell 720; the top of the inner surface of the PCB board 3 (the first side plate 31) is located inside the second mounting groove 701; the second connecting metal 702 is bent toward the PCB board 3 (the first side plate 31) and connected to the inner surface of the PCB board 3 (the first side plate 31). This structure makes the internal structure of the battery (pack) convenient to carry; and solves the problems of carrying and frequently replacing battery packs.

[0043] Specifically, in some embodiments, both the first body 610 and the second body 710 include a positive electrode sheet, a negative electrode sheet, and a separator membrane disposed between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer, the positive active material layer being coated on the surface of the positive current collector; the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material, such as lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector; the material of the negative current collector can be copper, and the negative active material layer includes a negative active material, such as carbon or silicon. The separator membrane can be made of PP (polypropylene) or PE (polyethylene), etc.

[0044] This utility model also proposes a drone, which includes a battery. The specific structure of the battery is as described in the above embodiments. Since this drone adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0046] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A battery protective case structure, characterized in that: The device includes a housing, a conductor, and a PCB board; the housing has a placement cavity; the PCB board is disposed inside the placement cavity; the conductor includes a first connecting segment and a second connecting segment connected to each other; the first connecting segment is disposed inside the housing; one end of the second connecting segment extends toward the placement cavity and is connected to the PCB board.

2. The battery protective case structure according to claim 1, characterized in that: The housing is made of PC plastic or PSF material; And / or the material of the first connecting segment body is the same as the material of the shell; And / or the material of the second connecting segment body is the same as the material of the housing.

3. The battery protective case structure according to claim 1, characterized in that: The PCB board includes a first side plate and a second side plate arranged side by side, and a connecting plate connecting the first side plate and the second side plate; the first side plate is connected to the second connecting section; the second side plate is used to connect to the battery cell structure.

4. The battery protective case structure according to claim 3, characterized in that: The first side plate is provided with an assembly hole corresponding to the second connecting section; one end of the second connecting section is welded to the inside of the assembly hole.

5. The battery protective case structure according to claim 3, characterized in that: An assembly gap is provided between the first side plate, the second side plate, and the connecting plate; the assembly gap is used to allow the tab of the battery cell structure to pass through.

6. The battery protective casing structure according to any one of claims 1 to 5, characterized in that: Both the outer surfaces of the first connecting segment and the second connecting segment are provided with a metal coating; and the metal coating on the first connecting segment is connected to the metal coating on the second connecting segment; the metal coating on the second connecting segment is soldered to the PCB board; and the metal coating on the first connecting segment is in communication with the outside of the housing.

7. The battery protective case structure according to claim 1, characterized in that: The housing has an internal installation channel; the installation channel communicates with the placement cavity; the first connecting section is sealed to the interior of the installation channel; and the end of the first connecting section away from the second connecting section has a bent section; the end of the bent section away from the first connecting section has a reinforcing section; the reinforcing section extends along the width direction of the installation channel.

8. A battery, characterized in that: The battery includes a first battery cell, a second battery cell, an insulating plate, and a buffer block, as well as the battery protective shell structure described in any one of claims 1 to 7; the buffer block is disposed at the inner bottom of the PCB board; the first battery cell, the second battery cell, and the insulating plate are all disposed inside the placement cavity; and the insulating plate is disposed between the first battery cell and the second battery cell; one side of the first battery cell is connected to the PCB board and disposed between the PCB board and the buffer block; one side of the second battery cell is connected to the PCB board and disposed between the PCB board and the buffer block.

9. The battery according to claim 8, characterized in that: The first battery cell includes a first body and a first mounting shell; the first mounting shell is provided with a first connecting metal; the first body is connected to the interior of the first mounting shell; and a first assembly groove is provided between the first body and the first mounting shell; the bottom of the inner surface of the PCB board is located inside the first assembly groove; the first connecting metal is connected to the inner surface of the PCB board. And / or, the second cell includes a second body and a second mounting shell; the second mounting shell is provided with a second connecting metal; the second body is connected to the interior of the second mounting shell; and a second assembly groove is provided between the second body and the second mounting shell; the top of the inner surface of the PCB board is located inside the second assembly groove; the second connecting metal is connected to the inner surface of the PCB board.

10. An unmanned aerial vehicle (UAV), characterized in that: Includes the battery as described in claim 8 or 9.

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