Battery assembly structure for small unmanned aerial vehicle and battery pack

Abstract

The present disclosure provides a battery assembly structure for a small unmanned aerial vehicle and a battery pack, the battery assembly structure for a small unmanned aerial vehicle comprising a shell, a bracket, a circuit board and a battery module; the shell is provided with a mounting channel, the bracket and the circuit board are arranged in the mounting channel; the bracket comprises a bottom plate and a fixed strip binding group, one end of the fixed strip binding group is connected to the circuit board, the other end of the fixed strip binding group is connected to the outer periphery of the bottom plate, the fixed strip binding group is formed with a mounting cavity, and the battery module is arranged in the mounting cavity to bind the battery module in the fixed strip binding group. Because one end of the fixed strip binding group is connected to the circuit board and the other end of the fixed strip binding group is connected to the outer periphery of the bottom plate, the battery module is bound in the fixed strip binding group, thereby limiting the activity range of the battery module; in the case of high-frequency vibration during the flight of the unmanned aerial vehicle, the battery module will not relatively displace due to high-frequency vibration.

Description

Technical Field

[0001] This disclosure relates to the technical field of small drone batteries, and in particular to a battery assembly structure and battery pack for small drones. Background Technology

[0002] With the rapid development of drone technology, its applications in aerial photography, agricultural plant protection, logistics transportation, and power line inspection are becoming increasingly widespread. As a mainstream product in the market, the endurance, structural stability, and space utilization of small drones directly affect operational efficiency and the expansion of application scenarios. As the core power source of drones, the structural design of the battery is particularly critical.

[0003] Current battery structures for small drones typically integrate the BMS board and battery module within a single casing, creating a unified battery pack for powering the drone. However, existing drone battery packs often place the battery module and BMS board on the battery casing. During flight, the high-frequency vibrations can cause relative displacement, potentially leading to cell wear, poor wiring connections, and even affecting flight stability due to a shift in the center of gravity. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a battery assembly structure and battery pack for small drones with a compact and robust battery component structure.

[0005] The purpose of this disclosure is achieved through the following technical solution: A battery assembly structure for a small unmanned aerial vehicle includes a shell, a bracket, a circuit board, and a battery module; the shell is provided with an installation channel, and the bracket and the circuit board are both disposed within the installation channel; The bracket includes a base plate and a fixing strip assembly. One end of the fixing strip assembly is connected to the circuit board, and the other end of the fixing strip assembly is connected to the outer periphery of the base plate. The fixing strip assembly forms a mounting cavity, and the battery module is disposed in the mounting cavity and secured within the fixing strip assembly.

[0006] In one embodiment, the fixing strip restraint group includes a plurality of fixing strips arranged around the outer peripheral wall of the battery module.

[0007] In one embodiment, multiple fixing strips are spaced apart along the outer peripheral wall of the battery module.

[0008] In one embodiment, each of the fixing bars is provided with a bent portion, the bent portion being connected to the end face of the circuit board.

[0009] In one embodiment, the circuit board has a protruding pad block, and the bent portion is fixedly connected to the pad block.

[0010] In one embodiment, the outer shell is a one-piece molded structure; And / or, the circuit board has a limiting port, and the fixing strip is detachably connected to the limiting port.

[0011] In one embodiment, the battery assembly structure for a small drone further includes a top cover disposed at an end of the housing, the top cover being opposite to the base plate; and / or, The bracket also includes a fixing plate group, which is arranged around the outer peripheral wall of the battery module.

[0012] In one embodiment, the battery module further includes a battery component, a positive electrode plate, and a negative electrode plate. The positive electrode plate is disposed at one end of the battery component, and the negative electrode plate is disposed at the other end of the battery component. The positive electrode plate and the negative electrode plate are disposed opposite to each other.

[0013] In one embodiment, the battery assembly structure for a small drone further includes a connecting wire, and the top cover has a through-hole through which the connecting wire is electrically connected to the circuit board.

[0014] A battery pack comprising the battery assembly structure for a small drone as described in any of the above embodiments.

[0015] Compared with the prior art, this disclosure has at least the following advantages: The outer casing has an installation channel, allowing the battery module, bracket, and circuit board to be positioned within it. This allows the casing to enclose the battery module, bracket, and circuit board, preventing internal components from being impacted. Simultaneously, a mounting cavity is formed within the fixing strip assembly, housing the battery module. The battery module is installed inside the bracket, with one end abutting against the end face of the base plate. One end of the fixing strip assembly connects to the circuit board, and the other end connects to the outer perimeter of the base plate, thus securing the battery module within the fixing strip assembly. This ensures stable installation of the battery module within the mounting cavity. Because the outer surface of the battery module adheres to the surface of the fixing strip assembly, its range of motion is limited. During high-frequency vibrations in drone flight, the battery module will not shift due to these vibrations. This prevents malfunctions caused by battery module shaking leading to poor wiring contact and avoids impacts on flight stability due to center of gravity shift. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a battery assembly structure for a small drone according to an embodiment of the present disclosure.

[0018] Figure 2 This is an exploded view of a battery assembly structure for a small unmanned aerial vehicle according to an embodiment of the present disclosure; Figure 3 for Figure 1 The enlarged view shown at point A in the middle; Figure 4 This is a schematic diagram of a battery assembly structure for a small unmanned aerial vehicle according to an embodiment of the present disclosure; Figure 5 This is a modeling diagram of a battery assembly structure for a small unmanned aerial vehicle according to an embodiment of the present disclosure.

[0019] Reference numerals: 10, Battery assembly structure for small UAVs; 100, Outer shell; 110, Mounting channel; 200, Bracket; 210, Mounting cavity; 220, Base plate; 230, Fixing strip restraint group; 2310, Bending part; 2320, Fixing strip; 240, Fixing piece; 300, Circuit board; 310, Limiting port; 320, Gasket block; 400, Battery module; 410, Battery component; 420, Positive electrode plate; 430, Negative electrode plate; 500, Top cover; 600, Connecting wire. Detailed Implementation

[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 5 As shown, a battery assembly structure 10 for a small unmanned aerial vehicle (UAV) according to an embodiment is characterized by comprising a housing 100, a bracket 200, a circuit board 300, and a battery module 400; the housing 100 is provided with an installation channel 110, and the bracket 200 and the circuit board 300 are both disposed within the installation channel 110. The bracket 200 includes a base plate 220 and a fixing strip binding assembly 230. One end of the fixing strip binding assembly 230 is connected to the circuit board 300, and the other end is connected to the outer periphery of the base plate 220. The fixing strip binding assembly 230 forms a mounting cavity 210, and the battery module 400 is disposed in the mounting cavity 210 and bound within the fixing strip binding assembly 230.

[0024] In this embodiment, an installation channel 110 is provided in the outer casing 100, allowing the battery module 400, bracket 200, and circuit board 300 to be disposed in the installation channel 110. This allows the outer casing 100 to enclose the battery module 400, bracket 200, and circuit board 300, preventing internal components from being impacted. Simultaneously, an installation cavity 210 is formed in the fixing strip restraint assembly 230, where the battery module 400 is disposed. The battery module 400 is installed inside the bracket 200, with one end of the battery module 400 abutting against the end face of the base plate 220. One end of the fixing strip restraint assembly 230 is connected to the circuit board 300. The other end of the restraint assembly 230 is connected to the outer periphery of the base plate 220, so that the battery module 400 is restrained within the fixing strip restraint assembly 230, thereby enabling the battery module 400 to be stably installed in the mounting cavity 210. Because the outer surface of the battery module 400 is in contact with the surface of the fixing strip restraint assembly 230, the range of motion of the battery module 400 is restricted. When the drone experiences high-frequency vibration during flight, the battery module 400 will not be relatively displaced due to high-frequency vibration. This avoids the fault of poor circuit contact caused by the shaking of the battery module 400, and also avoids the impact of the center of gravity shift on flight stability.

[0025] Combination Figure 2 and Figure 3 As shown, in one embodiment, the fixing strip restraint group 230 includes multiple fixing strips 2320, which are arranged around the outer peripheral wall of the battery module 400. It can be understood that by combining multiple fixing strips 2320 into the fixing strip restraint group 230, and by arranging the multiple fixing strips 2320 around the outer peripheral wall of the battery module 400, the battery module 400 can be restrained by the fixing strips 2320 from multiple angles. This further ensures that the battery module 400 is subjected to uniform force, preventing deformation or loosening of a single fixing strip 2320 due to concentrated force, and significantly improving the load-bearing capacity and durability of the fixing structure.

[0026] Combination Figures 1 to 4 As shown, in one embodiment, a plurality of fixing strips 2320 are spaced apart along the outer peripheral wall of the battery module 400. It can be understood that by spaced-apart fixing strips 2320 along the outer peripheral wall of the battery module 400, the plurality of fixing strips 2320 can stably and comprehensively bind the outer surface of the battery module 400, thereby ensuring that the battery module 400 is subjected to uniform force and stably placed within the mounting channel 110 of the housing 100.

[0027] Combination Figure 2 and Figure 3 As shown, in one embodiment, the fixing strip 2320 is provided with a bent portion 2310, which is located near the end of the circuit board 300 and connected to the end face of the circuit board 300. It can be understood that the bent portion 2310 bends along the end of the fixing strip 2320 towards the circuit board 300, fitting against the end face of the circuit board 300 opposite to the battery module 400, forming a clamping constraint along the axial direction of the battery module 400, and together with the lateral positioning of the fixing strip 2320 body on the battery module 400, forming a three-dimensional fixing system. This allows the bent portion 2310 to bend at the limiting opening 310 and connect to the end face of the circuit board 300, achieving a stable connection with the circuit board 300 through bending.

[0028] Combination Figure 2 and Figure 3 As shown, the circuit board 300 further includes a protruding gasket block 320, and the bent portion 2310 is fixedly connected to the gasket block 320. It can be understood that the protruding gasket block 320 on the circuit board 300, along with the fixed connection of the bent portion 2310 to the end face of the gasket block 320, prevents the fixing strip 2320 from directly connecting to the end face of the circuit board 300, thus avoiding compression and damage to the circuit board 300. The gasket block 320 acts as a buffer when the fixing strip 2320 is connected to the circuit board 300, preventing damage to the end face of the circuit board 300 due to the connection.

[0029] like Figure 2 As shown, in one embodiment, the outer shell 100 is a one-piece molded structure. It can be understood that the one-piece molded outer shell 100 is formed in one step using a mold. Compared to a split, pieced-together outer shell 100, it has a seamless overall structural feature, which significantly improves the structural strength and deformation resistance of the outer shell 100. When the drone encounters a collision, fall, or high-frequency vibration during flight, the one-piece outer shell 100 can evenly distribute the external force throughout the entire shell, avoiding stress concentration caused by local splicing gaps, effectively preventing the outer shell 100 from cracking or deforming, thereby providing more reliable mechanical protection for the internal battery module 400, bracket 200, and circuit board 300.

[0030] Combination Figure 2 and Figure 3 As shown, in another embodiment, the circuit board 300 has a limiting opening 310, and the fixing strip 2320 is detachably connected to the limiting opening 310. It can be understood that the detachable connection between the fixing strip 2320 and the limiting opening 310 is achieved through magnetic attraction between the fixing strip 2320 and the gasket block 320, allowing the fixing strip 2320 to be quickly separated or assembled from the limiting opening 310 of the circuit board 300, providing convenience for the installation, maintenance, and replacement of the battery module 400. The assembly process for the detachable structure is as follows: first, the battery module 400 is placed in the mounting cavity 210 of the bracket 200, with one end of the battery module 400 abutting against the end face of the base plate 220; then, the circuit board 300 is placed over the other end of the battery module 400; subsequently, one end of the fixing strip 2320 is inserted into the limiting opening 310 of the circuit board 300 and fixed. This eliminates the need for pre-assembly of the bracket 200 and the circuit board 300, reducing assembly complexity. During later maintenance, if it is necessary to inspect or replace the battery module 400 or repair the circuit board 300, the connection between the fixing strip 2320 and the limit port 310 can be directly disassembled without damaging the overall structure of the housing 100 or the bracket 200, thus reducing the impact of maintenance operations on other components.

[0031] like Figure 2 As shown, in one embodiment, the battery assembly structure 10 for a small drone further includes an upper cover 500, which is disposed at the end of the housing and is disposed opposite to the base plate 220. It can be understood that by providing the upper cover 500 at the end of the housing, and with the upper cover 500 opposite to the base plate 220, the battery structure can form a closed space, further allowing the battery module 400 and circuit board 300 to be disposed inside the housing, sealing the battery module 400 and circuit board 300 within the housing. The sealed space protects the structure of the battery module 400 and circuit board 300 from damage.

[0032] In one embodiment, the bracket 200 further includes a set of fixing pieces 240, which are arranged around the outer peripheral wall of the battery module 400. It is understood that by arranging the fixing pieces 240 around the outer peripheral wall of the battery module 400, the stability between the battery modules 400 can be stabilized. The battery module 400 is composed of multiple battery components 410, and the fixing pieces 240 fix each individual battery component 410 together, thereby allowing the multiple battery components 410 to be compactly combined.

[0033] Combination Figure 2 and Figure 4 As shown, in one embodiment, the battery module 400 further includes a positive electrode plate 420 and a negative electrode plate 430. The positive electrode plate 420 is disposed at one end of the battery component 410, and the negative electrode plate 430 is disposed at the other end of the battery component 410. The positive electrode plate 420 and the negative electrode plate 430 are arranged opposite to each other. It can be understood that the relative arrangement of the positive electrode plate 420 and the negative electrode plate 430 forms a centralized electrode output structure of the battery module 400. By integrating the electrodes of multiple battery components 410 onto the two electrode plates, efficient connection between the battery module 400 and external circuits is achieved. One electrode of each battery component 410 is conductively connected to the positive electrode plate 420, and the other electrode is conductively connected to the negative electrode plate 430, allowing multiple battery components 410 to form a series or parallel circuit topology through the two electrode plates. This simplifies the electrode lead-out structure and ensures the stability of current conduction.

[0034] See Figure 2 , Figure 3 and Figure 4 In one embodiment, the battery assembly structure 10 for a small drone further includes a connecting wire 600. The upper cover 500 has a through-hole, and the connecting wire 600 passes through the through-hole and is electrically connected to the circuit board 300. It is understood that by passing the connecting wire 600 through the through-hole of the upper cover 500 and electrically connecting it to the circuit board 300, the circuit board 300 and the battery module 400 can charge the drone via the connecting wire 600.

[0035] This application also includes a battery pack comprising the battery assembly structure 10 for a small drone as described in any of the above embodiments. It is understood that when the battery module 400 is attached to the fixing strip 2320, because both ends of the fixing strip 2320 are respectively fixed to the limiting opening 310 of the circuit board 300 and the base plate 220, the battery module 400 can be stably installed in the mounting cavity 210. Because the outer surface of the battery module 400 is attached to the fixing strip 2320, the range of motion of the battery module 400 is limited. Under high-frequency vibrations during drone flight, the battery module 400 will not experience relative displacement due to high-frequency vibrations; this avoids faults caused by poor circuit contact due to shaking of the battery module 400, and also avoids the impact of center of gravity shift on flight stability.

[0036] Compared with the prior art, this disclosure has at least the following advantages: In this embodiment, an installation channel 110 is provided in the outer casing 100, allowing the battery module 400, bracket 200, and circuit board 300 to be disposed in the installation channel 110. This allows the outer casing 100 to enclose the battery module 400, bracket 200, and circuit board 300, preventing internal components from being impacted. Simultaneously, an installation cavity 210 is formed in the fixing strip restraint assembly 230, where the battery module 400 is disposed. The battery module 400 is installed inside the bracket 200, with one end of the battery module 400 abutting against the end face of the base plate 220. One end of the fixing strip restraint assembly 230 is connected to the circuit board 300. The other end of the restraint assembly 230 is connected to the outer periphery of the base plate 220, so that the battery module 400 is restrained within the fixing strip restraint assembly 230, thereby enabling the battery module 400 to be stably installed in the mounting cavity 210. Because the outer surface of the battery module 400 is in contact with the surface of the fixing strip restraint assembly 230, the range of motion of the battery module 400 is restricted. When the drone experiences high-frequency vibration during flight, the battery module 400 will not be relatively displaced due to high-frequency vibration. This avoids the fault of poor circuit contact caused by the shaking of the battery module 400, and also avoids the impact of the center of gravity shift on flight stability.

[0037] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery assembly structure for a small unmanned aerial vehicle, characterized by, It includes a housing, a bracket, a circuit board, and a battery module; the housing is provided with an installation channel, and the bracket and the circuit board are both disposed within the installation channel; The bracket includes a base plate and a fixing strip assembly. One end of the fixing strip assembly is connected to the circuit board, and the other end of the fixing strip assembly is connected to the outer periphery of the base plate. The fixing strip assembly forms a mounting cavity, and the battery module is disposed in the mounting cavity and secured within the fixing strip assembly. 2.The battery assembly structure for a small unmanned aerial vehicle according to claim 1, wherein The fixing strip restraint group includes multiple fixing strips, which are arranged around the outer peripheral wall of the battery module. 3.The battery assembly structure for a small unmanned aerial vehicle according to claim 2, wherein Multiple fixing strips are spaced apart along the outer peripheral wall of the battery module.

4. The battery assembly structure for a small unmanned aerial vehicle according to claim 3, characterized in that, Each of the fixing bars is provided with a bent portion, which is connected to the end face of the circuit board.

5. The battery assembly structure for a small unmanned aerial vehicle according to claim 4, characterized in that, The circuit board has a protruding pad block, and the bent portion is fixedly connected to the pad block.

6. The battery assembly structure for a small unmanned aerial vehicle according to claim 1, characterized in that, The outer shell is a one-piece molded structure; And / or, the circuit board has a limiting port, and the fixing strip is detachably connected to the limiting port. 7.The battery assembly structure for a small unmanned aerial vehicle according to claim 1, wherein The battery assembly structure for a small drone further includes an upper top cover, which is disposed at the end of the outer shell and is opposite to the base plate; and / or, The bracket also includes a fixing plate group, which is arranged around the outer peripheral wall of the battery module.

8. The battery assembly structure for a small unmanned aerial vehicle according to claim 1, characterized in that, The battery module also includes a battery component, a positive electrode plate, and a negative electrode plate. The positive electrode plate is disposed at one end of the battery component, and the negative electrode plate is disposed at the other end of the battery component. The positive electrode plate and the negative electrode plate are disposed opposite to each other.

9. The battery assembly structure for a small unmanned aerial vehicle according to claim 7, characterized in that, The battery assembly structure for small drones also includes connecting wires, and the top cover has a through hole through which the connecting wires pass and are electrically connected to the circuit board.

10. A battery pack, characterized by, The battery assembly structure for a small drone includes any one of claims 1 to 9.

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