Lithium battery for unmanned aerial vehicle
By introducing a design that uses separator plate clearance holes and welding pads to connect the cell electrodes in drone lithium batteries, the problem of cell expansion and deformation has been solved, improving battery safety and stability, enhancing the reliability of electrical connections, simplifying the welding process, and increasing production efficiency.
Patent Information
- Application Number
- CN202520038099.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing drone lithium batteries are prone to cell expansion and deformation under the influence of factors such as temperature changes, which can lead to solder joint failure and affect the safety and stability of the battery.
The design incorporates a clearance hole in the center of the separator plate, providing space for cell expansion. The positive and negative electrodes of adjacent cells are connected by a welding pad, simplifying the welding process, enhancing electrical connection stability, and using conductive metal welding pads to replace traditional wire connections, thereby improving battery safety and lifespan.
It effectively prevents overall battery deformation, enhances the stability and safety of electrical connections, improves space utilization and heat dissipation, reduces short-circuit risk, simplifies welding processes, and improves production efficiency.
Smart Images
Figure CN223858285U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium battery technical field especially relates to a lithium battery for unmanned plane. BACKGROUND
[0002] In recent years, with the development of unmanned plane technology and the continuous expansion of its application field, higher requirements are put forward for the performance of the battery as the power source of the unmanned plane. The lithium battery for unmanned plane not only needs to have high energy density and fast charging and discharging capacity, but also needs to provide sufficient reliability and durability in physical structure to ensure flight safety and stability.
[0003] Most of the existing lithium batteries for unmanned plane adopt the mode of single large cell or multiple small cells in series and are packaged in a shell. However, under the influence of factors such as temperature change, the cell is prone to swelling and deformation, which will exert pressure on the surrounding structure, and then cause problems such as battery deformation and welding point falling off and failure.
[0004] The utility model is made based on the above situation. UTILITY MODEL CONTENTS
[0005] The utility model overcomes the defects of the prior art and provides a lithium battery for unmanned plane which is not easy to deform when the cell swells.
[0006] The utility model is implemented through the following technical solutions:
[0007] A lithium battery for unmanned plane comprises a shell and at least two cells arranged side by side in the shell, a partition plate is arranged between two adjacent cells, an avoiding hole for swelling reserve space of the cell is arranged in the middle part of the partition plate, a positive plate and a negative plate are arranged on the cell, a positive hole for the positive plate to pass out is arranged on the shell, a negative hole for the negative plate to pass out is arranged on the shell, a first welding disc for welding the positive plate and the negative plate is arranged between the negative hole for the negative plate of the previous cell to pass out and the positive hole for the positive plate of the next cell to pass out, and the first welding disc is connected to the shell.
[0008] The lithium battery for unmanned plane as described above, a second welding disc for connecting the positive plate and a load is arranged at the positive hole of the first cell on the shell.
[0009] The lithium battery for unmanned plane as described above, a third welding disc for connecting the negative plate of the last cell and a load is arranged at the negative hole of the last cell on the shell.
[0010] The lithium battery for unmanned plane as described above, the first welding disc, the second welding disc and the third welding disc are all made of conductive metal.
[0011] The lithium battery for unmanned aerial vehicle has the shell composed of side plates, an upper end plate and a lower end plate.
[0012] The lithium battery for unmanned aerial vehicle has the positive pole hole, the negative pole hole, the first welding disc, the second welding disc and the third welding disc arranged on the upper end plate.
[0013] The lithium battery for unmanned aerial vehicle has the upper end plate made of an insulating material.
[0014] The lithium battery for unmanned aerial vehicle has the shell in a prismatic shape.
[0015] The lithium battery for unmanned aerial vehicle has the shell composed of four side plates, which form a cylindrical structure, and the upper end plate and the lower end plate arranged at the upper end and the lower end of the cylindrical structure, respectively.
[0016] The lithium battery for unmanned aerial vehicle has the upper end plate provided with marks for identifying the positive pole and the negative pole of the lithium battery.
[0017] Compared with the prior art, the lithium battery for unmanned aerial vehicle has the following advantages.
[0018] In the present application, the relief hole provided in the middle of the partition plate provides a reserved space for the expansion of the battery cell, preventing the overall deformation or damage of the battery due to the expansion of the battery cell, and helping to improve the safety and service life of the battery. By introducing the first welding disc to connect the positive and negative pole pieces between adjacent battery cells, not only the welding process is simplified, but also the stability of the electrical connection is enhanced. Compared with direct welding on the pole pieces of the battery cell, this way can reduce the damage to the battery cell itself, prolong the service life of the battery, and ensure good electrical contact even in a vibrating environment. At least two battery cells are arranged side by side, and the relative positions between the battery cells are reasonably planned by using the partition plate, so that the entire battery module is more compact and easy to assemble. Such a layout not only improves the space utilization rate, but also helps to evenly distribute heat and improve the heat dissipation effect. The presence of the partition plate plays a physical isolation role, reducing the possibility of short circuit between different battery cells, especially in the case of collision or overheating, this design can provide additional safety protection. BRIEF DESCRIPTION OF DRAWINGS
[0019] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, in which:
[0020] Figure 1 is a structural schematic diagram of the present application;
[0021] Figure 2 is a structural schematic diagram of the present application after removing part of the shell;
[0022] Figure 3Is the structure schematic view of the electric core and the partition plate in the utility model;
[0023] Figure 4 Is the structure schematic view of the upper end plate in the utility model;
[0024] Figure 5 Is the overhead schematic view of the upper end plate in the utility model. DETAILED DESCRIPTION
[0025] The utility model is further described below in combination with the drawings:
[0026] As Figures 1 to 5 The utility model relates to a kind of lithium battery for unmanned aerial vehicle, including shell 1 and at least two side by side arranged in shell 1 electric core 2, two adjacent electric core 2 between being equipped with partition plate 3, the middle part of the partition plate 3 is equipped with the avoiding hole 31 of the expansion reserved space of electric core 2, the electric core 2 is equipped with positive plate 4 and negative plate 5, the shell 1 is equipped with the positive pole hole 101 for the positive plate 4 to wear out, shell 1 is equipped with the negative pole hole 102 for the negative plate 5 to wear out, the negative pole hole 102 for the negative plate 5 of previous electric core 2 to wear out and the positive pole hole 101 for the positive plate 4 of subsequent electric core 2 to wear out between being equipped with the first welding disc 61 for welding positive plate 4 and negative plate 5, the first welding disc 61 is connected on shell 1.
[0027] Partition plate 3 middle part setting avoiding hole 31 provides the reserved space required for expansion for electric core 2, avoids the problem that battery overall is deformed or damaged due to electric core 2 expansion, helps to improve the security and life of battery. By introducing first welding disc 61 to connect the positive and negative pole between adjacent electric core 2, not only simplify the welding process, also enhance the stability of electrical connection. Compared with welding directly on electric core pole piece, this mode can reduce the damage to electric core 2 itself, prolong the service life of battery, and ensure that even in the vibration environment, good electrical contact can be maintained. At least two side by side arranged electric core 2 is used, and the relative position between electric core 2 is reasonably planned using partition plate 3, so that the whole battery module is more compact and easy to assemble. Such layout not only improves space utilization, but also helps to evenly distribute heat, improves heat dissipation effect. The existence of partition plate 3 plays the role of physical isolation, reduces the possibility of short circuit between different electric core 2, especially in the case of collision or overheating, this design can provide additional security.
[0028] Further, the shell 1 is provided with a second welding pad 62 at the positive pole hole 101 corresponding to the positive pole tab 4 of the first block of battery cells 2, for connecting the positive pole tab 4 with the load. The second welding pad 62 serves as a conductive connection point, providing a stable and reliable electrical connection between the positive pole tab 4 and the external load. Compared to direct connection through the hole, this method can reduce the risk of poor contact or looseness, ensuring the stability and efficiency of current transmission. Using a welding pad instead of traditional wire connection makes the connection between the battery and the load more simple and intuitive. The technician can more easily complete the welding operation during assembly, and it is also convenient to check and repair the connection part during subsequent maintenance, improving work efficiency. The standardized welding pad design facilitates automated welding processes, which not only improves the precision and consistency of production, but also significantly improves production efficiency and reduces manufacturing costs.
[0029] Further, the shell 1 is provided with a third welding pad 63 at the negative pole hole 102 corresponding to the negative pole tab 5 of the last block of battery cells 2, for connecting the negative pole tab 5 with the load. The third welding pad 63 serves as a conductive connection point, providing a stable and reliable electrical connection between the negative pole tab 5 and the external load. Compared to direct connection through the hole, this method can reduce the risk of poor contact or looseness, ensuring the stability and efficiency of current transmission.
[0030] The first welding pad 61, the second welding pad 62, and the third welding pad 63 are all made of conductive metal. Conductive metal materials have very low resistivity, which can ensure that the electrical connection between the welding pad and the pole tab has minimal resistance loss, thereby improving current transmission efficiency and reducing energy loss. Conductive metal generally has good weldability and mechanical processing performance, making it easy to manufacture and assemble precisely, improving production efficiency and quality. Standardized conductive metal welding pad design is very suitable for automated production lines, helping to achieve efficient and consistent production processes and reducing production costs.
[0031] In an embodiment, the shell 1 is composed of a side plate 11, an upper end plate 10, and a lower end plate 12. By assembling the shell 1 into three parts, the side plate 11, the upper end plate 10, and the lower end plate 12, thicker or more robust materials can be used to manufacture each component, thereby improving the structural rigidity and impact resistance of the entire shell. The segmented design allows each plate to better distribute external pressure, reducing local stress concentration and improving the durability of the shell 1 when subjected to impact or vibration.
[0032] In an embodiment, the upper end plate 10 is made of insulating material. The positive electrode hole 101, the negative electrode hole 102, the first soldering pad 61, the second soldering pad 62, and the third soldering pad 63 are all provided on the upper end plate 10. Centralizing all critical electrical interfaces on the upper end plate 10 facilitates unified management and layout, simplifies internal wiring, and reduces the risk of short circuits. The centralized electrical interfaces make the soldering operation more precise and consistent, enhancing the mechanical strength and electrical contact quality of the soldering points, ensuring stable current transmission. All electrical interfaces are located in the same plane, making it convenient for technicians to install, inspect, and maintain, improving maintenance efficiency and reducing troubleshooting time.
[0033] In an embodiment, the upper end plate 10 is provided with a mark 7 identifying the positive and negative electrodes of the lithium battery. Clear positive and negative electrode marks 7 can effectively prevent users or technicians from miswiring when connecting the battery, avoiding damage or danger caused by short circuits or reverse current. For devices such as drones, correct electrical connection is crucial. Clear marks 7 help ensure accurate connection every time, reducing the potential risks of operational errors
[0034] In an embodiment, the shell 1 is prismatic, and the shell 1 includes four side plates 11 that form a cylindrical structure. The upper end plate 10 and the lower end plate 12 are respectively arranged at the upper end and the lower end of the cylindrical structure. Of course, the shell 1 can also have other shapes. The four side plates 11 can be connected by threaded fasteners or other connection methods, and the upper end plate 10 and the lower end plate 12 can be connected to the side plates 11 by threaded fasteners or other connection methods.
Claims
1. A lithium battery for a drone, characterized by: The application relates to a lithium battery shell, which comprises a shell (1) and at least two electric cores (2) arranged side by side in the shell (1), a partition plate (3) is arranged between two adjacent electric cores (2), the middle part of the partition plate (3) is provided with an avoiding hole (31) for the expansion allowance space of the electric core (2), the electric core (2) is provided with a positive pole sheet (4) and a negative pole sheet (5), the shell (1) is provided with a positive pole hole (101) for the positive pole sheet (4) to pass through, the shell (1) is provided with a negative pole hole (102) for the negative pole sheet (5) to pass through, the negative pole hole (102) for the negative pole sheet (5) of the previous electric core (2) to pass through and the positive pole hole (101) for the positive pole sheet (4) of the next electric core (2) to pass through are provided with a first welding disc (61) for welding the positive pole sheet (4) and the negative pole sheet (5), and the first welding disc (61) is connected to the shell (1).
2. The lithium battery for a drone according to claim 1, characterized in that: The shell (1) is provided with a second welding disc (62) for connecting the positive pole sheet (4) and a load at the positive pole hole (101) corresponding to the positive pole sheet (4) of the first electric core (2).
3. The lithium battery for unmanned aerial vehicle according to claim 2, characterized in that: The shell (1) is provided with a third welding disc (63) for connecting the negative pole sheet (5) and a load at the negative pole hole (102) corresponding to the negative pole sheet (5) of the last electric core (2).
4. The lithium battery for unmanned aerial vehicle according to claim 3, characterized in that: The first welding disc (61), the second welding disc (62) and the third welding disc (63) are all made of conductive metal.
5. The lithium battery for a drone according to claim 4, characterized in that: The shell (1) comprises side plates (11), an upper end plate (10) and a lower end plate (12).
6. The lithium battery for a drone according to claim 5, wherein: The positive pole hole (101), the negative pole hole (102), the first welding disc (61), the second welding disc (62) and the third welding disc (63) are all arranged on the upper end plate (10).
7. The lithium battery for a drone according to claim 6, characterized in that: The upper end plate (10) is made of insulating material.
8. The lithium battery for unmanned aerial vehicle according to any one of claims 1-7, characterized in that: The shell (1) is prismatic.
9. The lithium battery for a drone according to claim 5, wherein: The shell (1) comprises four side plates (11) which surround a cylindrical structure, and the upper end plate (10) and the lower end plate (12) are arranged at the upper end and the lower end of the cylindrical structure respectively.
10. The lithium battery for a drone according to claim 6, wherein: The upper end plate (10) is provided with an identification (7) for identifying the positive pole and the negative pole of the lithium battery.