Low-cost and light-weight lithium battery module for unmanned aerial vehicle

Abstract

The lithium battery module for the unmanned aerial vehicle comprises an assembly type shell and a battery pack arranged in the assembly type shell, the battery pack comprises a plurality of module bag assemblies which are sequentially arranged from left to right, and an air channel capable of ventilating and dissipating heat is arranged between every two adjacent module bag assemblies. The module package assembly comprises a module package shell and a plurality of battery cell monomers, the assembled shell and the module package shell are both plastic shells, the module package shell comprises a left shell and a right shell, an expansion sponge is arranged between every two adjacent battery cell monomers, and metal cooling fins are arranged on the outer sides of the left shell and the right shell. The battery module is reasonable in structural design, the weight of the battery module can be effectively reduced by arranging the assembly type shell and the module package shell to be plastic shells, meanwhile, the battery module has good strength and corrosion resistance, the assembly difficulty and cost are reduced, flexible combination and expansion can be conveniently carried out according to the actual requirements of the unmanned aerial vehicle, and the battery module is suitable for popularization and application. And meanwhile, maintenance and replacement are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of drone battery technology, specifically relating to a low-cost, lightweight lithium battery module for drones. Background Technology

[0002] With the booming development of the low-altitude economy, the demand for efficient and reliable energy solutions for agricultural drones is increasingly urgent. Secondary lithium battery modules, as the core power source for drones, directly affect their operational efficiency and economic benefits in terms of performance and cost-effectiveness. However, while sealed or semi-sealed metal structures ensure battery safety and stability to a certain extent, they inevitably increase the weight and manufacturing cost of the battery module. This factor is particularly critical in aircraft flight operations, affecting not only the drone's endurance but also directly impacting operating cost control, making it a crucial issue that urgently needs to be addressed in the industry's development. Traditional lithium battery modules cannot be flexibly combined and expanded according to the actual needs of drones, and are also inconvenient to maintain and replace. Therefore, low-cost, lightweight lithium battery modules for drones are one of the important directions for drone technology development, and a low-cost, lightweight lithium battery module for drones should be provided. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a low-cost, lightweight lithium battery module for drones, which addresses the shortcomings of the prior art. Its structure is reasonably designed. By making both the assembled outer shell and the module package shell plastic, the weight of the battery module can be effectively reduced. At the same time, it also has good strength and corrosion resistance. Multiple independent module package components are integrated together by screws to form a compact and fully functional battery module bottom shell, which reduces the assembly difficulty and cost. It is convenient to flexibly combine and expand according to the actual needs of the drone, and it is also convenient to maintain and replace.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a low-cost, lightweight lithium battery module for drones, characterized in that: it includes an assembled shell and a battery pack disposed within the assembled shell, the battery pack comprising multiple modular package assemblies arranged sequentially from left to right, an air channel for ventilation and heat dissipation between adjacent modular package assemblies, a busbar for connecting the multiple modular package assemblies in series on the top of the multiple modular package assemblies, each modular package assembly comprising a module package housing and multiple individual battery cells disposed within the module package housing, the assembled shell... Both the outer shell and the module package shell are plastic shells. The module package shell includes a left shell and a right shell that interlock. An expansion sponge is provided between two adjacent battery cells. Metal heat sinks are provided on the outer sides of both the left shell and the right shell. The assembled outer shell includes an upper cover shell covering the upper part of multiple module package assemblies, two side plates respectively located on both sides of the battery pack, and two bottom shell sleeves respectively located at the bottom of both sides of the battery pack. Multiple module package assemblies, side plates, and bottom shell sleeves are connected by screws. Multiple module package assemblies, side plates, and upper cover shells are connected by screws.

[0005] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: the top of the battery pack is connected to a positive output terminal, a negative output terminal, and a signal acquisition output harness.

[0006] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: the upper cover has two first through holes for the positive and negative output terminals to pass through respectively, and the upper cover also has a second through hole for the signal acquisition output harness to pass through.

[0007] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: the bottom shell cover includes a bottom protective plate padded at the bottom of the battery pack and two side positioning blocks respectively disposed on the outer sides of both ends of the bottom protective plate for positioning the side plates, wherein the bottom protective plate and the side positioning blocks are integrally formed.

[0008] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: screw through holes for screws are provided at the four corners of the module package and the side plate; two screw through holes for screws are provided on both sides of the upper cover and the bottom cover; and a locking nut is threaded onto the screw.

[0009] The aforementioned low-cost, lightweight lithium battery module for drones is characterized by: two vertical stiffening ribs provided on the side plate, and two grooves matching the vertical stiffening ribs provided on both sides of the upper cover. The upper ends of the vertical stiffening ribs are inserted into the upper cover.

[0010] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: the upper cover shell and the vertical stiffening ribs are fastened together by screws;

[0011] The aforementioned low-cost, lightweight lithium battery module for drones is characterized in that: both the left and right shells are made of high-temperature resistant and corrosion-resistant engineering plastic shells, and the outer sides of both the left and right shells are integrally formed with corresponding metal heat sinks.

[0012] This utility model has the following advantages compared with the prior art:

[0013] 1. This utility model uses plastic shells for both the assembled outer shell and the module housing, and replaces the traditional metal shell with metal heat sinks on both sides of the module housing. This effectively reduces the weight of the battery module, while also providing good strength and corrosion resistance.

[0014] 2. This utility model integrates multiple independent modular components together using screws to form a compact and fully functional battery module base shell. Only an upper cover and side plates are needed, which reduces the number of parts required in traditional designs, lowers assembly difficulty and cost, facilitates flexible combination and expansion according to the actual needs of drones, and is also easy to maintain and replace, making it suitable for drone use.

[0015] In summary, the present invention has a reasonable structural design. By using plastic shells for both the assembled outer shell and the module package shell, the weight of the battery module can be effectively reduced, while also having good strength and corrosion resistance. Multiple independent module package components are integrated together by screws to form a compact and fully functional battery module base shell, which reduces assembly difficulty and cost, facilitates flexible combination and expansion according to the actual needs of the UAV, and also facilitates maintenance and replacement.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an exploded view of the present invention.

[0019] Figure 3 This is an exploded view of the modular package components of this utility model.

[0020] Figure 4 This is a schematic diagram of the bottom structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1—Vertical stiffening rib; 2—Module package assembly; 201—Left shell;

[0023] 202—Right casing; 203—Battery cell; 204—Expansion sponge;

[0024] 205—Metal heat sink; 3—Screw; 4—Lock nut;

[0025] 5—Bus; 6—Positive output terminal; 7—Negative output terminal;

[0026] 8—Signal acquisition and output harness; 9—Upper cover; 10—First through hole;

[0027] 11—Second perforation; 12—Screw; 13—Side plate;

[0028] 14—Bottom shell sleeve; 141—Bottom protective plate; 142—Side positioning block;

[0029] 15—Ventilation hole; 16—Air passage. Detailed Implementation

[0030] like Figures 1 to 4 As shown, this utility model includes an assembled housing and a battery pack disposed within the assembled housing. The battery pack includes multiple modular pack assemblies 2 arranged sequentially from left to right. An air channel 16 for ventilation and heat dissipation is provided between adjacent modular pack assemblies 2. A busbar 5 for connecting the multiple modular pack assemblies 2 in series is provided on the top of each assembly. Each modular pack assembly 2 includes a modular pack shell and multiple individual battery cells 203 disposed within the modular pack shell. Both the assembled housing and the modular pack shell are plastic shells. The modular pack shell includes a left shell 201 and a right shell 201 that interlock with each other. The housing 202 has an expansion sponge 204 between two adjacent battery cells 203. The outer sides of the left housing 201 and the right housing 202 are provided with metal heat sinks 205. The assembled housing includes an upper cover 9 covering the upper part of the multiple module pack assemblies 2, two side plates 13 respectively disposed on both sides of the battery pack, and two bottom shell sleeves 14 respectively disposed on the bottom of both sides of the battery pack. The multiple module pack assemblies 2, the side plates 13 and the bottom shell sleeves 14 are connected by screws 3. The multiple module pack assemblies 2, the side plates 13 and the upper cover 9 are connected by screws 3.

[0031] In actual use, both the assembled outer shell and the module housing are made of engineering plastic. By setting both the assembled outer shell and the module housing as plastic housings, and setting metal heat sinks 205 on both sides of the module housing to replace the traditional metal housing, the weight of the battery module can be effectively reduced, while also having good strength and corrosion resistance.

[0032] It should be noted that by integrating multiple independent module package components 2 together through screw 3, a compact and fully functional battery module bottom shell is formed. Only the top cover shell 9 and side plate 13 need to be added, which reduces the number of parts required in traditional designs, reduces assembly difficulty and cost, and facilitates flexible combination and expansion according to the actual needs of the drone. It is also easy to maintain and replace, making it suitable for drone use.

[0033] In actual use, the air channel 16 and the metal heat sink 205 are both designed to help dissipate heat from the battery module.

[0034] In practice, multiple battery cells 203 in module package component 2 are connected in series via busbar 5.

[0035] like Figure 4 As shown, in a specific implementation, the bottom of both the left housing 201 and the right housing 202 is provided with a plurality of ventilation holes 15 for ventilation and heat dissipation, and the outer side of both the left housing 201 and the right housing 202 is provided with grooves for forming the air channels 16, the grooves penetrating the sides and bottom of the corresponding left housing 201 or right housing 202.

[0036] In this embodiment, the top of the battery pack is connected to a positive output terminal 6, a negative output terminal 7, and a signal acquisition and output harness 8.

[0037] In actual use, the first connection end of the first module package component 2 is directly connected to the positive output terminal 6, the second connection end of the first module package component 2 is connected to the first connection end of the next module package component 2 through the bus 5, and so on, until the second connection end of the last module package component 2 is directly connected to the negative output terminal 7.

[0038] In this embodiment, the upper cover 9 has two first through holes 10 for the positive output terminal 6 and the negative output terminal 7 to pass through respectively, and the upper cover 9 also has a second through hole 11 for the signal acquisition output harness 8 to pass through.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the bottom cover 14 includes a bottom cover plate 141 that is padded on the bottom of the battery pack and two side positioning blocks 142 that are respectively disposed on the outer sides of both ends of the bottom cover plate 141 and used to position the side plate 13. The bottom cover plate 141 and the side positioning blocks 142 are integrally formed.

[0040] In actual use, the side plate 13 is arranged close to the inner side of the side positioning block 142.

[0041] In this embodiment, screw holes for screw rods 3 are provided at the four corners of the module package component 2 and the side plate 13. Two screw holes for screw rods 3 are provided on both sides of the upper cover shell 9 and the bottom shell sleeve 14. Locking nuts 4 are threaded onto the screw rods 3.

[0042] In actual use, the two screw holes on the bottom shell sleeve 14 are respectively opened on the two side positioning blocks 142.

[0043] In this embodiment, two vertical stiffening ribs 1 are provided on the side plate 13, and two grooves matching the vertical stiffening ribs 1 are provided on both sides of the upper cover shell 9. The upper ends of the vertical stiffening ribs 1 are inserted into the upper cover shell 9.

[0044] In actual use, the cross-section of the vertical stiffening rib 1 is U-shaped, and the two vertical stiffening ribs 1 on the side plate 13 are located between the side positioning blocks 142 at both ends of the bottom shell sheath 14.

[0045] In practice, the upper cover 9 includes a top plate and a ring of barriers around the bottom of the top plate.

[0046] In this embodiment, the upper cover shell 9 and the vertical stiffening rib 1 are fastened together by screws 12.

[0047] In this embodiment, both the left shell 201 and the right shell 202 are high-temperature resistant and corrosion-resistant engineering plastic shells, and the outer sides of both the left shell 201 and the right shell 202 are integrally formed with the corresponding metal heat sink 205.

[0048] In practice, the high-temperature resistant and corrosion-resistant engineering plastic is PC+PBT material.

[0049] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A low-cost, lightweight lithium battery module for a drone, characterized by: The application relates to a battery pack, which comprises an assembled shell and a battery group arranged in the assembled shell, wherein the battery group comprises a plurality of module package assemblies (2) arranged in sequence from left to right, air channels (16) capable of being ventilated and radiated are arranged between two adjacent module package assemblies (2), the top of the plurality of module package assemblies (2) is provided with busbars (5) for connecting the module package assemblies (2) in series, the module package assembly (2) comprises a module package shell and a plurality of battery cell monomers (203) arranged in the module package shell, the assembled shell and the module package shell are plastic shells, the module package shell comprises a left shell (201) and a right shell (202) which are buckled, expansion sponges (204) are arranged between two adjacent battery cell monomers (203), the outer side of the left shell (201) and the right shell (202) is provided with metal radiating fins (205), the assembled shell comprises an upper cover shell (9) covering the upper part of the plurality of module package assemblies (2), two side plates (13) arranged on the two sides of the battery group respectively and two bottom shell sheaths (14) arranged at the bottom of the two sides of the battery group respectively, the plurality of module package assemblies (2), the side plates (13) and the bottom shell sheaths (14) are connected through screw rods (3), and the plurality of module package assemblies (2), the side plates (13) and the upper cover shell (9) are connected through screw rods (3).

2. The low-cost, lightweight lithium battery module for UAVs according to claim 1, characterized in that: The top of the battery group is connected with a positive output terminal (6), a negative output terminal (7) and a signal acquisition output wire harness (8).

3. The low-cost, lightweight lithium battery module for UAVs according to claim 2, characterized in that: First perforations (10) for the positive output terminal (6) and the negative output terminal (7) to pass through are arranged on the upper cover shell (9), and second perforations (11) for the signal acquisition output wire harness (8) to pass through are also arranged on the upper cover shell (9).

4. The low-cost, lightweight lithium battery module for UAVs according to claim 1, characterized in that: The bottom shell sheath (14) comprises a bottom guard plate (141) arranged at the bottom of the battery group and two side positioning blocks (142) arranged at the outer sides of the two ends of the bottom guard plate (141) and used for positioning the side plates (13), and the bottom guard plate (141) and the side positioning blocks (142) are integrally formed.

5. The low-cost, lightweight lithium battery module for UAVs according to claim 1, characterized in that: Screw rod perforations for the screw rods (3) to pass through are arranged at the four corners of the module package assemblies (2) and the side plates (13), screw rod perforations for the screw rods (3) to pass through are arranged on the two sides of the upper cover shell (9) and the bottom shell sheath (14), and lock nuts (4) are threadedly mounted on the screw rods (3).

6. The low-cost, lightweight lithium battery module for UAVs according to claim 1, characterized in that: Two vertical stiffening ribs (1) are arranged on the side plates (13), two grooves matched with the vertical stiffening ribs (1) are arranged on the two sides of the upper cover shell (9), and the upper ends of the vertical stiffening ribs (1) are inserted into the upper cover shell (9).

7. The low-cost, lightweight lithium battery module for UAVs according to claim 6, characterized in that: The upper cover shell (9) and the vertical stiffening ribs (1) are fastened and connected through screws (12).

8. The low-cost, lightweight lithium battery module for UAVs according to claim 1, characterized in that: The left shell (201) and the right shell (202) are high-temperature-resistant and corrosion-resistant engineering plastic shells, and the left shell (201) and the right shell (202) are integrally formed with corresponding metal radiating fins (205) on the outer sides.

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