High-safety lithium battery cell connecting device
Through the innovative design of the expansion frame and the closed frame, combined with the setting of fireproof plate and through groove, the stability and safety problems of lithium battery cell connection device during fixing and aging of insulating tape are solved, realizing stable connection and high safety of battery cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-20
AI Technical Summary
Existing lithium battery cell connection devices are prone to damage when the fixing and insulating tape ages or is subjected to friction, leading to cell loosening and detachment, which affects connection stability and safety.
The design incorporates an expansion frame, a left closed frame, a right closed frame, inserts, positioning screw holes, connecting blocks, slots, and connecting screw holes. Combined with the fireproof board and through slots, the inserts and connecting blocks ensure stable connection of the battery cells, while the through slots facilitate heat dissipation and fire isolation.
It improves the stability and safety of cell connections, prevents cell loosening and continuous fires, enhances heat dissipation and fire resistance, and ensures the flexibility and overall safety of cell connections.
Smart Images
Figure CN224020926U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of battery cell connection devices, specifically a high-safety lithium battery cell connection device. Background Technology
[0002] A battery cell refers to a single electrochemical cell containing positive and negative electrodes, and is generally not used directly. This differs from a battery, which contains protection circuitry and a casing and can be used directly.
[0003] A lithium-ion rechargeable battery consists of a battery cell and a protection circuit board. Removing the protection circuit board leaves the battery cell, which is the energy storage component. The quality of the battery cell directly determines the quality of the rechargeable battery, and the cell connection device connects these individual cells in a frame, forming a battery cell assembly.
[0004] However, existing lithium battery cell connection devices only use the left and right frame ends, along with the upper middle extension frame, to wrap and assemble the cells. After wrapping, insulating tape is used to fix the frame. This fixing method is prone to damage and breakage of the insulating tape when it ages or is subjected to friction. This affects the stability of the entire cell frame, causing the internal cells to loosen or even fall off. This not only affects the stability of the connection but also the safety of the cell connection.
[0005] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings and proposed a high-safety lithium battery cell connection device. Utility Model Content
[0006] The purpose of this invention is to provide a high-safety lithium battery cell connection device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-safety lithium battery cell connection device, comprising an expansion frame, a left closed frame on the left side of the expansion frame, a right closed frame on the right side of the expansion frame, and insert blocks fixedly installed on the front and rear right sides of the outer surface of the expansion frame and the front and rear right sides of the outer surface of the left closed frame. Positioning screw holes are provided on the right side of the upper surface of each insert block. Connecting blocks are fixedly installed on the front and rear left sides of the outer surface of the expansion frame and the front and rear left sides of the outer surface of the right closed frame. A slot is provided on the left side of the surface of each connecting block, and a connecting screw hole is provided on the upper right side of the outer surface of each connecting block.
[0008] Preferably, the upper surface of the expansion frame has openings on both the left and right sides, and the upper right surface of the left closed frame and the upper left surface of the right closed frame also have openings.
[0009] Preferably, the openings are connected to the interior of each frame, and all openings are set to a semi-circular shape.
[0010] Preferably, a fireproof plate is fixedly installed on the inner surface of the expansion frame, and fireproof plates are also fixedly installed on the inner surfaces of the left and right closed frames.
[0011] Preferably, through slots are provided on both the left and right sides of the front and rear sides of the surface of the expansion frame, and through slots are also provided on the right side of the front and rear sides of the surface of the left closed frame and the left side of the front and rear sides of the surface of the right closed frame.
[0012] Preferably, the through grooves are symmetrically distributed along the center of the frame, and the through grooves penetrate the fireproof board and communicate with the inside of the frame.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model, through the arrangement of an extension frame, a left closed frame, a right closed frame, an insert block, a positioning screw hole, a connecting block, a slot, and a connecting screw hole, allows the battery cell to be placed inside the right closed frame. Then, the extension frame covers the battery cell from the left side. At this time, the insert block is inserted into the slot, aligning the positioning screw hole and the connecting screw hole. Then, the bolts are tightened to fix the connecting block and the insert block. The left side chamber of the extension frame can continue to house battery cells, which are then covered and fixed using the above method. The left and right closed frames can also be directly connected, i.e., one battery cell can be installed. Depending on the number of battery cells to be connected, the number of extension frames can be increased, allowing the number of battery cells to be connected to be increased. This makes the connection device more flexible to use, and after connection, the entire connection device is more stable and less prone to loosening or falling off due to external influences, thus ensuring strong connection stability and high safety.
[0015] 2. This utility model, through the setting of fireproof plates and through channels, ensures air circulation inside and outside all frames, which can dissipate the heat of the battery cells and prevent overheating that could lead to short circuits and fires. Even if a battery cell in any frame catches fire, the flames will not directly burn the frame due to the obstruction of the fireproof plate, thus preventing the fire from affecting the battery cells placed in other frames. This avoids a continuous fire reaction of the battery cells, ensuring heat dissipation capacity and improving the fire-resistant performance of the entire connection device for the battery cells, thereby significantly improving the overall safety of the connection and use. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0017] Figure 2 This is a schematic diagram of the disassembled frame structure of this utility model.
[0018] In the diagram: 1. Expansion frame; 2. Left closed frame; 3. Right closed frame; 4. Insert block; 5. Positioning screw hole; 6. Connecting block; 7. Slot; 8. Connecting screw hole; 9. Opening; 10. Fireproof board; 11. Through groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] like Figures 1-2 As shown, a high-safety lithium battery cell connection device includes an expansion frame 1, a left closed frame 2 on the left side of the expansion frame 1, and a right closed frame 3 on the right side of the expansion frame 1. Insert blocks 4 are fixedly installed on the front and rear right sides of the outer surface of the expansion frame 1 and the front and rear right sides of the outer surface of the left closed frame 2. Positioning screw holes 5 are opened on the upper right side of the insert blocks 4. Connecting blocks 6 are fixedly installed on the front and rear left sides of the outer surface of the expansion frame 1 and the front and rear left sides of the outer surface of the right closed frame 3. Slots 7 are opened on the left side of the surface of the connecting blocks 6, and connecting screw holes 8 are opened on the upper right side of the outer surface of the connecting blocks 6.
[0021] By adopting the above technical solution, the left closed frame 2 and the right closed frame 3 can be directly connected, that is, a battery cell can be installed.
[0022] Depending on the number of battery cells connected, an extension frame 1 can be added in the middle of the left closed frame 2 and the right closed frame 3 to increase the number of battery cells connected.
[0023] Insert the insert 4 into the slot 7 so that the positioning screw hole 5 and the connecting screw hole 8 correspond. Then, tighten the bolts to fix the connecting block 6 to the insert 4, so that the expansion frame 1, the left closed frame 2 and the right closed frame 3 can be assembled and fixed.
[0024] Furthermore, openings 9 are provided on both the left and right sides of the upper surface of the expansion frame 1, and openings 9 are also provided on the upper right side of the left closed frame 2 and the upper left side of the right closed frame 3.
[0025] Opening 9 is connected to the interior of each frame, and all openings 9 are set to be semi-circular.
[0026] By adopting the above technical solution, after the expansion frame 1, the left closed frame 2 and the right closed frame 3 are assembled, the opening 9 will fit together on the left and right sides to form a complete circular opening, providing a connection between the battery cell's terminals and external wires.
[0027] Furthermore, a fireproof plate 10 is fixedly installed on the inner surface of the expansion frame 1, and fireproof plates 10 are also fixedly installed on the inner surfaces of the left closed frame 2 and the right closed frame 3.
[0028] By adopting the above technical solution, if a cell in any frame catches fire, the flames will not directly burn the frame due to the obstruction of the fireproof plate 10, and will not affect the cells placed in other frames, thereby avoiding the continuous fire reaction of the cells.
[0029] Furthermore, through slots 11 are provided on both the left and right sides of the front and rear sides of the surface of the expansion frame 1, and through slots 11 are also provided on the right side of the front and rear sides of the surface of the left closed frame 2 and the left side of the front and rear sides of the surface of the right closed frame 3.
[0030] The through grooves 11 are symmetrically distributed along the center of the frame, and the through grooves 11 penetrate the fireproof board 10 and are connected to the inside of the frame.
[0031] By adopting the above technical solution, the through slot 11 can ensure the airflow inside and outside all the frames, which can dissipate the heat of the battery cell and avoid overheating that could lead to a short circuit and fire.
[0032] Working Principle: When using this high-safety lithium battery cell connection device, firstly, the battery cell is placed inside the right closed frame 3. Then, the expansion frame 1 covers the cell from the left side. At this time, the insert block 4 is inserted into the slot 7, aligning the positioning screw hole 5 with the connecting screw hole 8. Then, the bolts are tightened to fix the connecting block 6 to the insert block 4. The left chamber of the expansion frame 1 can continue to house cells, which are then covered by the left closed frame 2. This process is repeated to continue covering and fixing the cells. The left closed frame 2 and the right closed frame 3 can also be directly connected, i.e., installing one cell. Depending on the number of cells to be connected, the number of expansion frames 1 can be increased, allowing for an increase in the number of cell connections. After the entire frame is assembled, all the connected cells can be connected... The outer surface of the frame can be wrapped with a layer of insulating tape for binding. Then, the upper end of the battery cell is connected to the wire through the opening 9 to complete the connection of the entire battery cell. During the operation of the battery cell, the through slot 11 can ensure the air circulation inside and outside all frames, which can dissipate the heat of the battery cell and prevent overheating that could lead to short circuit and fire. Even if a battery cell in any frame catches fire, the flames will not directly burn the frame due to the barrier of the fireproof plate 10, and will not affect the battery cells placed in other frames, thus avoiding continuous fire reaction of the battery cells. This not only ensures heat dissipation capacity, but also improves the fire-resistant performance of the entire connection device for the battery cells. This is the working principle of this high-safety lithium battery cell connection device.
Claims
1. A high-safety lithium battery cell connection device, comprising an extension frame (1), characterized in that, A left closed frame (2) is provided on the left side of the expansion frame (1), and a right closed frame (3) is provided on the right side of the expansion frame (1). Insert blocks (4) are fixedly installed on the front and rear right sides of the outer surface of the expansion frame (1) and the front and rear right sides of the outer surface of the left closed frame (2). A positioning screw hole (5) is provided on the right side of the upper surface of each insert block (4). A connecting block (6) is fixedly installed on the front and rear left sides of the outer surface of the expansion frame (1) and the front and rear left sides of the outer surface of the right closed frame (3). A slot (7) is provided on the left side of the surface of the connecting block (6), and a connecting screw hole (8) is provided on the upper right side of the outer surface of the connecting block (6).
2. The high-safety lithium battery cell connection device according to claim 1, characterized in that, The upper surface of the expansion frame (1) has openings (9) on both the left and right sides, and the upper right surface of the left closed frame (2) and the upper left surface of the right closed frame (3) also have openings (9).
3. The high-safety lithium battery cell connection device according to claim 2, characterized in that, The opening (9) is connected to the interior of each frame, and the opening (9) is set to be semi-circular.
4. The high-safety lithium battery cell connection device according to claim 1, characterized in that, Fireproof board (10) is fixedly installed on the inner surface of the expansion frame (1), and fireproof board (10) is also fixedly installed on the inner surfaces of the left closed frame (2) and the right closed frame (3).
5. The high-safety lithium battery cell connection device according to claim 1, characterized in that, The expansion frame (1) has through slots (11) on both the left and right sides of the front and rear sides of the surface, and through slots (11) are also provided on the right side of the front and rear sides of the surface of the left closed frame (2) and the left side of the front and rear sides of the surface of the right closed frame (3).
6. The high-safety lithium battery cell connection device according to claim 5, characterized in that, The through groove (11) is symmetrically distributed along the center of the frame, and the through groove (11) penetrates the fireproof board (10) and communicates with the inside of the frame.