Detachable lithium battery pack

Abstract

The detachable lithium battery pack comprises a first lithium battery box and a second lithium battery box, butt joint grooves are formed in the bottoms and one sides of the first lithium battery box and the second lithium battery box, and sliding grooves and bayonets are formed in the inner walls of the butt joint grooves respectively; butt joint rails are fixedly connected to the tops and the other sides of the first lithium battery box and the second lithium battery box, clamping beads are movably connected to the tops of the butt joint rails, and battery mounting openings are formed in the front face of the first lithium battery box and the back face of the second lithium battery box; a lithium battery main body is mounted between the first lithium battery box and the second lithium battery box through a battery mounting port, the back surface of the first lithium battery box and the front surface of the second lithium battery box are fixedly connected with a power connection mechanism in a penetrating manner, and through the arrangement of the first lithium battery box, the second lithium battery box, a butt joint groove, a butt joint rail and a power connection plate, the lithium battery pack is convenient to disassemble; and meanwhile, the practicability of the lithium battery pack is also improved, so that the lithium battery pack can be randomly assembled in required size and quantity.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery pack technology, specifically a detachable lithium battery pack. Background Technology

[0002] Lithium-ion battery packs are assembled from one or more lithium-ion cells, along with protection boards or other battery accessories. Strictly speaking, this assembly process is called battery packing. Lithium-ion battery packs designed using battery packs generally have higher quality. They are also commonly known as lithium-ion battery packs. Depending on the needs of various industrial customers, 3.7V lithium-ion cells are connected in series and parallel to obtain high-voltage and high-capacity lithium-ion battery packs. The term "high-capacity lithium battery" is used to describe lithium-ion battery packs with relatively large capacities; there is no specific definition of a maximum voltage or capacity. According to our statistics, lithium-ion battery packs with a capacity of 5Ah or higher can generally be considered high-capacity lithium-ion batteries.

[0003] Existing patent document CN206685443U discloses a detachable energy storage lithium battery, including a lower base, support plates on both sides of the lower base, vertical sliding grooves on the support plates, a battery mounting seat on the lower base, a battery sleeve connected to the battery mounting seat by threads, a battery placement hole inside the battery sleeve, a lithium battery installed in the battery placement hole, a horizontal slot above the lower base, a support side plate installed in the horizontal slot, vertical sliding strips on both sides of the support side plate, an upper top plate above the support side plate, vertical sliding strip holes at the four corners of the upper top plate, a battery fixing seat below the upper top plate, a battery fixing hole inside the battery fixing seat. This utility model has a novel structure, is suitable for lithium batteries of different sizes and specifications, ensures that the lithium battery is in a dry working environment, helps to extend the service life of the lithium battery, is easy to disassemble, and has low manufacturing cost.

[0004] However, most existing detachable lithium battery packs are assembled using bolts or battery box snap-fit ​​assembly. Bolted lithium battery packs require tightening and loosening bolts during installation and disassembly, making them inconvenient. While battery box snap-fit ​​assembly is easier to install and assemble, the assembly method and size are limited, and the battery box needs to be replaced according to power consumption during assembly, resulting in poor practicality of detachable lithium batteries. To address this, we propose a detachable lithium battery pack. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a detachable lithium battery pack to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a detachable lithium battery pack, comprising a first lithium battery box and a second lithium battery box. The bottom and one side of both the first and second lithium battery boxes are provided with mating grooves. The inner walls of the mating grooves are respectively provided with sliding grooves and bayonets. The top and the other side of both the first and second lithium battery boxes are fixedly connected with mating rails. A retaining bead is movably connected to the top of each mating rail. Battery mounting ports are provided on the front of the first and the back of both the second lithium battery boxes. A lithium battery body is mounted between the first and second lithium battery boxes through the battery mounting ports. A power connection mechanism is fixedly connected through the back of the first and the front of both the second lithium battery boxes.

[0009] More preferably, a connecting telescopic belt is fixedly connected between the first lithium battery box and the second lithium battery box, with the first lithium battery box and the second lithium battery box located at opposite ends of the connecting telescopic belt.

[0010] More preferably, the power receiving mechanism includes a power receiving plate and a power receiving board. The power receiving plate is fixedly connected through the back of the first lithium battery box and the front of the second lithium battery box, and the power receiving board is fixedly connected to the outside of the power receiving plate.

[0011] More preferably, there are eight junction boxes, with four junction boxes forming a group, and each group of junction boxes arranged at equal intervals on the outer side of the junction box.

[0012] More preferably, the outer sides of both the first lithium battery box and the second lithium battery box are provided with electrical connection slots, and there are eight electrical connection slots. The eight electrical connection slots are arranged in groups of four, and each group of electrical connection slots is located on the top, bottom, left and right sides of the first lithium battery box and the second lithium battery box respectively.

[0013] More preferably, the diameter of the lithium battery body is adapted to the inner diameter of the battery mounting port, and the lithium battery body is movably connected to the first lithium battery box and the second lithium battery box respectively through the battery mounting port.

[0014] (III) Beneficial Effects

[0015] This utility model provides a detachable lithium battery pack, which has the following advantages:

[0016] (1) This type of detachable lithium battery pack, through the setting of a first lithium battery box, a second lithium battery box, a docking slot, a docking rail, and a connecting plate, when using the detachable lithium battery pack to connect lithium batteries in parallel, the operator installs the negative terminal of the lithium battery body into the battery mounting port of the first lithium battery box and the positive terminal of the lithium battery body into the battery mounting port of the second lithium battery box, and the lithium battery body will be connected to the connecting plate. Then, multiple assemblies are performed, and then the docking slots on the first and second lithium battery boxes of the first group are connected to the docking rails on the first and second lithium battery boxes of the second group. At this time, the locking slots and locking beads will be engaged, and the two sets of lithium batteries will be energized through the connecting plate on the connecting plate. Then, they are connected sequentially according to... Figure 3 This assembly method allows for assembly into the desired size. When series assembly is required, the worker installs the negative terminal of the first lithium battery body into the battery mounting port of the first lithium battery box, and the positive terminal into the battery mounting port of the second lithium battery box. This connects the lithium battery body to the terminal block. Then, the worker installs the positive terminal of the second lithium battery body into the battery mounting port of the first lithium battery box, and the negative terminal into the battery mounting port of the second lithium battery box. This connects the lithium battery body to the terminal block. The first and second sets are then combined, and the terminal plates on the back of both sets are cut off, forming a series connection. When assembling the second set, the terminal plate on the second set side of the first set at the connection point between the first and second sets is cut off, and then... Figure 4 The lithium battery packs can be assembled sequentially to obtain the required size. At the same time, the staff can also assemble the lithium batteries according to other required shapes. When disassembly is required, the staff only needs to push the first and second groups in the reverse order of assembly to remove the lithium batteries. This makes it easy to disassemble the lithium battery packs and also improves the practicality of the lithium battery packs, allowing the lithium battery packs to be assembled in any size and quantity as needed. Attached Figure Description

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

[0018] Figure 2 This is a partial structural schematic diagram of the first lithium battery box of this utility model;

[0019] Figure 3 This is a schematic diagram of the parallel connection method of the lithium battery pack of this utility model;

[0020] Figure 4 This is a schematic diagram of the series connection method of the lithium battery pack of this utility model.

[0021] In the diagram: 1. First lithium battery box; 2. Second lithium battery box; 3. Docking groove; 4. Slide groove; 5. Bayonet; 6. Docking rail; 7. Clamping bead; 8. Power connection groove; 9. Power connection board; 10. Battery mounting port; 11. Lithium battery body; 12. Power connection plate; 13. Connecting telescopic belt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a detachable lithium battery pack, including a first lithium battery box 1 and a second lithium battery box 2. The bottom and one side of the first lithium battery box 1 and the second lithium battery box 2 are provided with docking grooves 3. The inner wall of the docking grooves 3 is provided with sliding grooves 4 and bayonet 5 respectively. The top and the other side of the first lithium battery box 1 and the second lithium battery box 2 are fixedly connected with docking rails 6. The top of the docking rails 6 is movably connected with a retaining bead 7. The front of the first lithium battery box 1 and the back of the second lithium battery box 2 are provided with battery mounting ports 10. The lithium battery body 11 is installed between the first lithium battery box 1 and the second lithium battery box 2 through the battery mounting ports 10. The back of the first lithium battery box 1 and the front of the second lithium battery box 2 are both fixedly connected with a power connection mechanism.

[0024] In this embodiment, specifically, a connecting telescopic belt 13 is fixedly connected between the first lithium battery box 1 and the second lithium battery box 2. The first lithium battery box 1 and the second lithium battery box 2 are respectively located at both ends of the connecting telescopic belt 13. The connecting telescopic belt 13 makes the first lithium battery box 1 and the second lithium battery box 2 more stably and firmly connected.

[0025] In this embodiment, the power connection mechanism specifically includes a power connection plate 12 and a power connection board 9. The power connection plate 12 is fixedly connected to the back of the first lithium battery box 1 and the front of the second lithium battery box 2. The power connection board 9 is fixedly connected to the outside of the power connection plate 12. After the lithium battery body 11 is installed, the power can be directly applied to the four power connection boards 9, which makes it easier for the staff to assemble the required lithium battery pack according to their needs.

[0026] In this embodiment, specifically, there are eight power connection boards 9. The eight power connection boards 9 are arranged in groups of four. Each group of power connection boards 9 is arranged at equal intervals on the outside of the power connection plate 12. The power connection boards 9 enable each group of lithium batteries to be connected as needed.

[0027] In this embodiment, specifically, the outer sides of the first lithium battery box 1 and the second lithium battery box 2 are provided with electrical connection slots 8. There are eight electrical connection slots 8, and four slots 8 are arranged in each group. Each group of electrical connection slots 8 is located on the top, bottom, left and right sides of the first lithium battery box 1 and the second lithium battery box 2, respectively. The electrical connection slots 8 enable better power transmission between the electrical connection boards 9, and at the same time make the connection between each group of lithium batteries more secure.

[0028] In this embodiment, specifically, the diameter of the lithium battery body 11 is adapted to the inner diameter of the battery mounting port 10. The lithium battery body 11 is movably connected to the first lithium battery box 1 and the second lithium battery box 2 through the battery mounting port 10, which facilitates the installation of lithium batteries by the staff.

[0029] Working Principle: After installation, first check the installation, fixation, and safety protection of this utility model. When using a detachable lithium battery pack for parallel assembly, the worker installs the negative terminal of the lithium battery body 11 into the battery mounting port 10 of the first lithium battery box 1, and the positive terminal of the lithium battery body 11 into the battery mounting port 10 of the second lithium battery box 2. The lithium battery body 11 will then connect with the power receiving plate 12. Multiple assemblies are then performed. The docking slots 3 on the first lithium battery box 1 and the second lithium battery box 2 of the first group are then connected with the docking rails 6 on the first lithium battery box 1 and the second lithium battery box 2 of the second group. At this time, the locking slots 5 and the locking beads 7 will engage, and power will be supplied between the two sets of lithium batteries through the power receiving plate 9 on the power receiving plate 12. Then, the process is repeated sequentially... Figure 3 Assembly can be done in this way to form the required size. When series assembly is required, the worker installs the negative terminal of the first lithium battery body 11 into the battery mounting port 10 of the first lithium battery box 1, and the positive terminal of the lithium battery body 11 into the battery mounting port 10 of the second lithium battery box 2. The lithium battery body 11 will then be connected to the receiving plate 12. The worker then installs the positive terminal of the second lithium battery body 11 into the battery mounting port 10 of the first lithium battery box 1, and the negative terminal of the lithium battery body 11 into the battery mounting port 10 of the second lithium battery box 2. The lithium battery body 11 will then be connected to the receiving plate 12. Then the first and second sets are combined, and the receiving plates 9 on the back of the first and second sets are cut off. At this point, a series connection is formed. When assembling the second set, the receiving plate 9 on the side of the second set of the first set at the connection between the first and second sets is cut off, and then... Figure 4 The lithium battery pack of the required size can be obtained by assembling it in sequence. At the same time, the staff can also assemble the lithium battery according to other required shapes. When it is necessary to disassemble, the staff only needs to push the first group and the second group in the reverse order of assembly to remove the lithium battery. This completes the use of this utility model. This utility model has a simple structure and is safe and convenient to use.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable lithium battery pack comprising a first lithium battery box (1) and a second lithium battery box (2), characterized in that: The bottom and one side of the first lithium battery box (1) and the second lithium battery box (2) are provided with a butt joint groove (3), the inner wall of the butt joint groove (3) is respectively provided with a sliding groove (4) and a bayonet (5), the top and the other side of the first lithium battery box (1) and the second lithium battery box (2) are fixedly connected with a butt joint rail (6), the top of the butt joint rail (6) is movably connected with a clamping bead (7), the front of the first lithium battery box (1) and the back of the second lithium battery box (2) are provided with a battery mounting port (10), the first lithium battery box (1) and the second lithium battery box (2) are installed with a lithium battery body (11) through the battery mounting port (10), and the back of the first lithium battery box (1) and the front of the second lithium battery box (2) are fixedly connected with an electricity connection mechanism.

2. The detachable lithium battery pack of claim 1, wherein: The first lithium battery box (1) and the second lithium battery box (2) are fixedly connected with a connecting elastic band (13), and the first lithium battery box (1) and the second lithium battery box (2) are located at two ends of the connecting elastic band (13).

3. The detachable lithium battery pack of claim 1, wherein: The electricity connection mechanism comprises an electricity connection disc (12) and an electricity connection plate (9), the electricity connection disc (12) is fixedly connected to the back of the first lithium battery box (1) and the front of the second lithium battery box (2), and the outer side of the electricity connection disc (12) is fixedly connected with the electricity connection plate (9).

4. The detachable lithium battery pack of claim 3, wherein: The electricity connection plate (9) is provided with eight, and every four of the eight electricity connection plates (9) is a group, and the electricity connection plates (9) in each group are equidistantly arranged on the outer side of the electricity connection disc (12).

5. The detachable lithium battery pack of claim 1, wherein: The outer side of the first lithium battery box (1) and the second lithium battery box (2) is provided with an electricity connection groove (8), the electricity connection groove (8) is provided with eight, and every four of the eight electricity connection grooves (8) is a group, and the electricity connection grooves (8) in each group are located on the upper and lower and left and right four sides of the first lithium battery box (1) and the second lithium battery box (2).

6. The detachable lithium battery pack of claim 1, wherein: The diameter of the lithium battery body (11) is matched with the inner diameter of the battery mounting port (10), and the lithium battery body (11) is movably connected with the first lithium battery box (1) and the second lithium battery box (2) through the battery mounting port (10).

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