Lithium battery module capable of being quickly disassembled and assembled for unmanned aerial vehicle

Abstract

The utility model discloses a lithium battery module capable of being quickly assembled and disassembled for an unmanned aerial vehicle, which relates to the field of batteries and particularly comprises a plurality of single battery cells, a connecting plate detachably connected with the single battery cells and an integrated BMS (Battery Management System) upper cover fixedly connected with the connecting plate, a plurality of magnetic plugs are arranged in the middle of the bottom of the connecting plate, the plurality of magnetic sockets and the plurality of magnetic plugs are inserted in a one-to-one correspondence manner, the plurality of single battery cells are connected in series through a plurality of first detachable connecting structures, and each first detachable connecting structure comprises a first perforated connecting copper plate and a bolt and nut assembly; the positive electrode output copper terminals and the negative electrode output copper terminals which are adjacent to each other are connected in series through the first perforated connecting copper plates, the connecting plates are detachably connected with the plurality of single battery cells, the plurality of single battery cells are also detachably connected, and when a single single battery cell goes wrong, the single single battery cell can be detached for replacement, so that the replacement efficiency is improved. The whole lithium battery module does not need to be scrapped, so that the cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to a lithium battery module that can be quickly disassembled and assembled for an unmanned aerial vehicle. Background Art

[0002] Lithium batteries are efficient, environmentally friendly, and convenient batteries with broad application prospects. For lithium batteries used in the field of drones, when a single cell of a lithium battery module fails, customers need to replace and repair the cell, but the factory often needs a long time to schedule and delay the customer's repair time. Secondly, some drone manufacturers will choose to sell lithium battery modules as replacements. For example, if 10,000 drones are sold, 200 lithium battery modules will be purchased as stock to facilitate the replacement of lithium battery modules containing defective single cells. However, most of these 200 lithium battery modules are still not used normally after the shelf life expires, resulting in a lot of waste.

[0003] At the same time, when a problem occurs during the use of a lithium battery module, when inspection finds that a problem occurs in a single cell of the lithium battery module, in theory, only the problematic single cell in the lithium battery module needs to be replaced.

[0004] However, in the prior art, each single cell has positive and negative pole tabs, and laser welding is used to weld the positive and negative pole tabs of each single cell to the connecting plate in turn to connect them, and the total positive and negative poles are simultaneously led out. The pole tabs of the single cell are not detachably connected to the connecting plate, so the single cell with problems cannot be quickly replaced, which ultimately causes the entire lithium battery module to be unable to be used normally, which causes great waste of the product. Utility Model Content

[0005] The utility model provides a lithium battery module that can be quickly disassembled and assembled for unmanned aerial vehicles, so as to solve the problem that in the prior art, a single battery cell and a connecting plate are connected in a non-detachable manner. When a single battery cell fails, the failed single battery cell cannot be quickly replaced, causing the entire lithium battery module to be unable to be used normally, resulting in great waste of products.

[0006] The utility model discloses a lithium battery module for drones that can be quickly disassembled and assembled, which adopts the following technical solution: the device comprises: a plurality of single cells, a connecting plate that is detachably connected to the plurality of single cells, and an integrated BMS upper cover that is fixedly connected to the connecting plate;

[0007] A plurality of single cells are arranged along the width direction thereof, a magnetic socket is arranged at the top center of the single cell, a plurality of magnetic plugs are evenly arranged at the bottom middle of the connecting plate along the length direction thereof, and the plurality of magnetic sockets are plugged in one by one with the plurality of magnetic plugs;

[0008] The single cell comprises a positive output copper terminal and a negative output copper terminal located at the top, wherein the positive output copper terminal of the single cell at one end serves as the total positive output copper terminal, and the negative output copper terminal of the single cell at the other end serves as the total negative output copper terminal; through holes are provided on the positive output copper terminal and the negative output copper terminal;

[0009] The plurality of single cells are connected in series through a plurality of first detachable connection structures, the first detachable connection structure comprising a first perforated connection copper plate and a bolt and nut assembly, the first perforated connection copper plate being fixedly connected to a positive output copper terminal or a negative output copper terminal through the bolt and nut assembly, and the first perforated connection copper plate connecting adjacent positive output copper terminals and negative output copper terminals in series;

[0010] A total positive lead-out terminal and a total negative lead-out terminal are fixedly connected to the two ends of the top surface of the connecting plate, respectively. The total positive lead-out terminal is connected to the total positive output copper terminal, and the total negative lead-out terminal is connected to the total negative output copper terminal; the total positive lead-out terminal and the total negative lead-out terminal are connected to the integrated BMS cover.

[0011] Preferably, the bolt and nut assembly comprises a nut and a bolt matched with the nut;

[0012] Two through holes are arranged on the first perforated connecting copper plate along the length direction. The nut is fixed on the perforated connecting copper plate and arranged coaxially with the through holes.

[0013] Preferably, the first detachable connection structure further comprises a second perforated connection copper plate, and the total positive electrode output copper terminal and the total negative electrode output copper terminal are respectively connected to the total positive electrode lead-out terminal and the total negative electrode lead-out terminal via the second perforated connection copper plate;

[0014] A through hole is provided on the second copper plate with holes for connection. The nut is fixed on the second copper plate with holes for connection and is arranged coaxially with the through hole.

[0015] Preferably, the integrated BMS upper cover has a plurality of through holes correspondingly opened on the two side panels along the length direction, and the number of through holes on the side panels is equal to the number of single battery cells;

[0016] The bolt and nut assembly fixes the side plate of the upper cover between the positive output copper terminal or the negative output copper terminal and the first connection copper plate with holes.

[0017] Preferably, upper cover side sealing plates are provided outside the two side plates of the integrated BMS upper cover.

[0018] Preferably, it comprises a base arranged at the bottom of a plurality of single cells and a side sealing plate installed between the integrated BMS upper cover and the base.

[0019] In a lithium battery module for drones that can be quickly disassembled and assembled, the first detachable connection structure is replaced by a second detachable connection structure, the second detachable connection structure includes a plug-in and a conductive sheet, the top of the plug-in is fixedly connected to the bottom of a connecting plate, the lower part of the plug-in is plugged in one-to-one with the positive output copper terminal and the negative output copper terminal, the conductive sheet is located on the top surface of the connecting plate, and every two adjacent plug-ins are connected by a conductive sheet;

[0020] The plug-in pair corresponding to the total positive output copper terminal is connected to the total positive lead-out terminal, and the plug-in pair corresponding to the total negative output copper terminal is connected to the total negative lead-out terminal.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. In the present invention, the first detachable connection structure enables the connection plate to be detachably connected to a plurality of single cells, and the plurality of single cells are also detachably connected to each other. When a single cell has a problem, the single cell can be removed and replaced without scrapping the entire lithium battery module, thus saving costs.

[0023] 2. In the present invention, the single battery cell and the connection plate are connected by the cooperation of a magnetic socket and a magnetic plug, which is a detachable connection method, ensuring quick disassembly and assembly between the single battery cell and the connection plate.

[0024] 3. In the present invention, the second detachable connection structure is composed of a plug-in and a conductive sheet. Through the second detachable connection structure, multiple single cells can be flexibly connected in series, and the single cells can also be quickly disassembled and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is an exploded view of Example 1 of the utility model without the base and the side sealing plate;

[0027] Figure 2 This is an exploded view of Example 1 of the utility model without the upper cover and side sealing plate;

[0028] Figure 3 This is an exploded view of the upper cover of Example 1 of the utility model;

[0029] Figure 4 It is an exploded view of Example 2 of the utility model.

[0030] Description of Reference Numerals

[0031] 1. Single cell; 2. Connecting plate; 3. Integrated BMS upper cover; 4. First detachable connecting structure; 5. Upper cover side sealing plate; 6. Base; 7. Side sealing plate; 8. Second detachable connecting structure; 11. Magnetic socket; 12. Positive output copper terminal; 13. Negative output copper terminal; 21. Magnetic plug; 22. Total positive lead-out terminal; 23. Total negative lead-out terminal; 41. First connecting copper plate with holes; 42. Bolt and nut assembly; 43. Second connecting copper plate with holes; 81. Plug-in; 82. Conductive sheet; 421. Nut; 422. Bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1 of the utility model of a lithium battery module for a drone that can be quickly disassembled and assembled, such as Figures 1 to 3 As shown, it includes: 1. A lithium battery module for drones that can be quickly disassembled and assembled, characterized in that it includes a plurality of single cells 1, a connecting plate 2 that is detachably connected to the plurality of single cells 1, and an integrated BMS upper cover 3 that is fixedly connected to the connecting plate 2;

[0034] A plurality of single cells 1 are arranged in a row along the width direction thereof, a magnetic socket 11 is arranged at the top center of the single cell 1, a plurality of magnetic plugs 21 are evenly arranged at the bottom middle of the connecting plate 2 along the length direction thereof, and the plurality of magnetic sockets 11 are plugged into the plurality of magnetic plugs 21 in a one-to-one correspondence;

[0035] The single cell 1 includes a positive output copper terminal 12 and a negative output copper terminal 13 located at the top, wherein the positive output copper terminal 12 of the single cell 1 at one end serves as the total positive output copper terminal, and the negative output copper terminal 13 of the single cell 1 at the other end serves as the total negative output copper terminal; through holes are provided on the positive output copper terminal 12 and the negative output copper terminal 13;

[0036] A plurality of single cells 1 are connected in series through a plurality of first detachable connection structures 4, wherein the first detachable connection structure 4 comprises a first perforated connection copper plate 41 and a bolt and nut assembly 42, wherein the first perforated connection copper plate 41 is fixedly connected to the positive output copper terminal 12 or the negative output copper terminal 13 via the bolt and nut assembly 42, and the first perforated connection copper plate 41 connects the adjacent positive output copper terminal 12 and the negative output copper terminal 13 in series;

[0037] A total positive lead-out terminal 22 and a total negative lead-out terminal 23 are fixedly connected to the two ends of the top surface of the connecting plate 2, respectively. The total positive lead-out terminal 22 is connected to the total positive output copper terminal, and the total negative lead-out terminal 23 is connected to the total negative output copper terminal; the total positive lead-out terminal 22 and the total negative lead-out terminal 23 are connected to the integrated BMS cover 3.

[0038] In this embodiment, it should be noted that the plurality of single battery cells 1 are all wrapped by an aluminum shell.

[0039] In this embodiment, it should be noted that the integrated BMS upper cover 3 includes a BMS board, and the connecting board 2 connects multiple single cells 1 and then outputs them to the integrated BMS upper cover 3 to centrally control and protect the lithium battery module.

[0040] In this embodiment, it should be noted that there are two magnets in each of the magnetic socket 11 and the magnetic plug 21. During the insertion process, the magnets at both ends will attract each other, and the four probes in the magnetic plug 21 will expand and contract during the contact with the magnetic socket 11.

[0041] In this embodiment, the bolt and nut assembly 42 includes a nut 421 and a bolt 422 matched with the nut 421;

[0042] The first perforated connecting copper plate 41 is provided with two through holes along the length direction. The nut 421 is fixed on the perforated connecting copper plate 41 and arranged coaxially with the through holes.

[0043] In this embodiment, it should be noted that the nut 421 is embedded in the first perforated connecting copper plate 41, and the bolt and nut assembly 42 adopts an external hexagonal bolt and nut. The external hexagonal bolt and nut are characterized by good self-locking properties. The head of the bolt 422 is in an external hexagonal shape. When the head is stripped during the twisting process, the bolt 422 can still be removed.

[0044] In this embodiment, the first detachable connection structure 4 further includes a second perforated connection copper plate 43, and the total positive output copper terminal and the total negative output copper terminal are respectively connected to the total positive lead-out terminal 22 and the total negative lead-out terminal 23 via the second perforated connection copper plate 43;

[0045] A through hole is formed on the second perforated copper plate 43 , and a nut 421 is fixed on the second perforated copper plate 43 and arranged coaxially with the through hole.

[0046] In this embodiment, it should be noted that the nut 421 is embedded in the second perforated connecting copper plate 43, and the bolt and nut assembly 42 adopts an external hexagonal bolt and nut. The external hexagonal bolt and nut are characterized by good self-locking properties. The head of the bolt 422 is in an external hexagonal shape. When the head is stripped during the twisting process, the bolt 422 can still be removed.

[0047] In this embodiment, the integrated BMS upper cover 3 has a plurality of through holes correspondingly opened on the two side panels along the length direction, and the number of through holes on the side panels is equal to the number of single battery cells 1;

[0048] The bolt and nut assembly 42 fixes the side plate of the upper cover 3 between the positive output copper terminal 12 or the negative output copper terminal 13 and the first perforated connecting copper plate 41 .

[0049] In the present embodiment, it should be noted that the nut 421 is fixed on the inner side of the first perforated connecting copper plate 41. During installation, the plurality of single cells 1 are first connected to the bottom of the connecting plate 2 through the cooperation of the magnetic socket 11 and the magnetic plug 21. The bolt 422 passes through the positive output copper terminal 12 or the negative output copper terminal 13, the side plate of the integrated BMS cover 3, the first perforated connecting copper plate 41 and the nut 421 fixed on the first perforated connecting copper plate 41 from the outside to the inside, so as to connect the plurality of single cells 1 in series and fix them on the side plate of the integrated BMS cover 3.

[0050] In this embodiment, upper cover side sealing plates 5 are arranged outside two side plates of the integrated BMS upper cover 3 .

[0051] In this embodiment, it includes a base 6 arranged at the bottom of a plurality of single cells 1 and a side sealing plate 7 installed between the integrated BMS upper cover 3 and the base 6 .

[0052] In this embodiment, it should be noted that the base 6 includes a plurality of rectangular grooves, into which the bottoms of the single battery cells 1 can be just inserted, and the plurality of rectangular grooves are used to accommodate the plurality of single battery cells 1 .

[0053] Embodiment 2 of the utility model of a lithium battery module for drones that can be quickly disassembled and assembled is different from embodiment 1 in that: Figure 4 As shown, the first detachable connection structure 4 is replaced by a second detachable connection structure 8, and the second detachable connection structure 8 includes a plug-in 81 and a conductive sheet 82, the top of the plug-in 81 is fixedly connected to the bottom of the connecting plate 2, and the lower part of the plug-in 81 is plugged into the positive output copper terminal 12 and the negative output copper terminal 13 one by one, and the conductive sheet 82 is located on the top surface of the connecting plate 2, and every two adjacent plug-ins 81 are connected by a conductive sheet 82;

[0054] The plug-in pair 81 corresponding to the total positive output copper terminal is connected to the total positive lead-out terminal 22 , and the plug-in pair 81 corresponding to the total negative output copper terminal is connected to the total negative lead-out terminal 23 .

[0055] In this embodiment, it should be noted that the conductive sheet 82 is a copper sheet.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery module for drones that can be quickly disassembled and assembled, characterized in that: It comprises a plurality of single battery cells (1), a connection plate (2) detachably connected to the plurality of single battery cells (1), and an integrated BMS upper cover (3) fixedly connected to the connection plate (2); The plurality of single cells (1) are arranged in a row along the width direction thereof, a magnetic socket (11) is arranged at the top center of the single cell (1), a plurality of magnetic plugs (21) are evenly arranged at the bottom middle of the connecting plate (2) along the length direction thereof, and the plurality of magnetic sockets (11) are plugged into the plurality of magnetic plugs (21) in a one-to-one corresponding manner; The single cell (1) comprises a positive output copper terminal (12) and a negative output copper terminal (13) located at the top, wherein the positive output copper terminal (12) of the single cell (1) located at one end serves as the total positive output copper terminal, and the negative output copper terminal (13) of the single cell (1) located at the other end serves as the total negative output copper terminal; through holes are provided on the positive output copper terminal (12) and the negative output copper terminal (13); A plurality of the single cells (1) are connected in series via a plurality of first detachable connection structures (4), wherein the first detachable connection structure (4) comprises a first perforated connection copper plate (41) and a bolt and nut assembly (42), wherein the first perforated connection copper plate (41) is fixedly connected to a positive output copper terminal (12) or a negative output copper terminal (13) via the bolt and nut assembly (42), and the first perforated connection copper plate (41) connects adjacent positive output copper terminals (12) and negative output copper terminals (13) in series; A total positive lead-out terminal (22) and a total negative lead-out terminal (23) are respectively fixedly connected to the two ends of the top surface of the connection plate (2); the total positive lead-out terminal (22) is connected to the total positive output copper terminal, and the total negative lead-out terminal (23) is connected to the total negative output copper terminal; the total positive lead-out terminal (22) and the total negative lead-out terminal (23) are connected to the integrated BMS upper cover (3).

2. The quickly detachable lithium battery module for drone according to claim 1, characterized in that: The bolt and nut assembly (42) comprises a nut (421) and a bolt (422) matched with the nut (421); The first perforated connecting copper plate (41) is provided with two through holes along the length direction, and the nut (421) is fixed on the perforated connecting copper plate (41) and arranged coaxially with the through holes.

3. The quickly detachable lithium battery module for drone according to claim 2, characterized in that: The first detachable connection structure (4) further comprises a second perforated connection copper plate (43), and the total positive electrode output copper terminal and the total negative electrode output copper terminal are respectively connected to the total positive electrode lead-out terminal (22) and the total negative electrode lead-out terminal (23) via the second perforated connection copper plate (43); A through hole is provided on the second perforated connecting copper plate (43), and the nut (421) is fixed on the second perforated connecting copper plate (43) and arranged coaxially with the through hole.

4. The quickly detachable lithium battery module for drone according to claim 1, characterized in that: The integrated BMS upper cover (3) has two side panels along the length direction correspondingly provided with a plurality of through holes, and the number of the through holes on the side panels is equal to the number of the single battery cells (1); The bolt and nut assembly (42) fixes the side plate of the upper cover (3) between the positive output copper terminal (12) or the negative output copper terminal (13) and the first perforated connection copper plate (41).

5. The quickly detachable lithium battery module for drone according to claim 1, characterized in that: Upper cover side sealing plates (5) are arranged outside the two side plates of the integrated BMS upper cover (3).

6. The quickly detachable lithium battery module for drone according to claim 1, characterized in that: It comprises a base (6) arranged at the bottom of a plurality of single battery cells (1) and a side sealing plate (7) installed between an integrated BMS upper cover (3) and the base (6).

7. A quickly detachable lithium battery module for a drone according to any one of claims 1 to 6, characterized in that: The first detachable connection structure (4) is replaced by a second detachable connection structure (8), the second detachable connection structure (8) comprising a plug-in connector (81) and a conductive sheet (82), the top of the plug-in connector (81) being fixedly connected to the bottom of the connection plate (2), the lower part of the plug-in connector (81) being plugged into the positive output copper terminal (12) and the negative output copper terminal (13) in a one-to-one correspondence, the conductive sheet (82) being located on the top surface of the connection plate (2), and every two adjacent plug-ins (81) being connected by one conductive sheet (82); The plug-in pair (81) correspondingly plugged into the total positive electrode output copper terminal is connected to the total positive electrode lead-out terminal (22), and the plug-in pair (81) correspondingly plugged into the total negative electrode output copper terminal is connected to the total negative electrode lead-out terminal (23).

Images