High-temperature and normal-temperature standing carrier for battery cell with air bag after liquid injection
By designing a high-temperature and room-temperature static carrier for battery cells with air bags after electrolyte injection, the battery cells are placed at a 45° angle and fixed in multiple layers, which solves the problem of electrolyte not wetting the electrodes, improves lithium battery performance and reduces scrapping costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-04-07
AI Technical Summary
The electrolyte is hidden inside the air bag and does not wet the inside of the electrode. The electrode that is not in contact with the electrolyte cannot participate in the battery electrochemical reaction, which leads to a decrease in the rate performance and discharge capacity of the lithium battery.
Design a high-temperature and room-temperature static carrier for battery cells with air bags after electrolyte injection, including a base and a support device. The inner wall of the tray is set at a 45° angle, the battery cells are placed at a 45° angle, and the air bags face upward so that the electrolyte can fully wet the electrode surface. Multi-layer stacking and fixation are achieved through a connecting device to reduce the space occupied.
This achieves full electrolyte wetting, improves the rate performance and discharge capacity of lithium batteries, and reduces product disposal costs.
Smart Images
Figure CN224096702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of static carrier technology, and in particular to a high-temperature and room-temperature static carrier for battery cells with air bags after liquid injection. Background Technology
[0002] In the production process of lithium-ion cells, the packaged cells need to be injected with electrolyte through the gas bag opening. After the electrolyte is injected, the gas bag opening is sealed. The cells are then subjected to high temperature or high temperature static treatment. The high temperature reduces the viscosity of the electrolyte, allowing the electrolyte to flow faster and wet the surface of the internal cell electrodes.
[0003] Due to differences in the length and width of the battery cells and the system formulation, different types of battery cells have long immersion times and poor immersion effects, which seriously affect the efficiency of the production line and the formation of the SEI passivation film. Currently, small enterprises in the industry use turnover boxes and large enterprises use clips to place the battery cells after liquid injection and packaging into the clips. The turnover boxes or clips are placed on offline manual carts, and the carts are then manually pulled into a high-temperature warehouse for high-temperature static placement.
[0004] However, after injection, the electrolyte may not have completely flowed into the main body of the cell. The cells are stacked in the magazine, and the electrolyte is hidden in the air bag and does not wet the inside of the electrode. This is not effective, the ion transport path becomes longer, and it hinders the shuttle of lithium ions between the positive and negative electrodes. The electrode that is not in contact with the electrolyte cannot participate in the battery electrochemical reaction. At the same time, the battery interface resistance increases, which affects the rate performance, discharge capacity and use of the lithium battery. Utility Model Content
[0005] The technical problem this invention aims to solve is that the electrolyte is hidden inside the air bag and does not wet the inside of the electrode. The electrode that is not in contact with the electrolyte cannot participate in the battery electrochemical reaction. At the same time, the battery interface resistance increases, which affects the rate performance of the lithium battery.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a carrier for high-temperature and room-temperature static placement of battery cells with gas bags after liquid injection, including a base, a bottom frame provided on one side of the base, a bearing device provided inside the bottom frame, a connecting device provided on one side of the bottom frame, the bearing device including a tray, two perforated plates symmetrically fixedly connected to one side of the tray, both perforated plates being bolted to the bottom frame, two positioning plates symmetrically fixedly connected to one side of the tray, both positioning plates being bolted to the bottom frame, and the surface of the tray engaging with the inner wall of the bottom frame.
[0007] The aforementioned components achieve the following effects: By setting up a support device, the tray is first inserted into the bottom frame, so that the inner walls of the perforated plate and positioning plate coincide with the inner walls of the threaded holes on the bottom frame. At this time, bolts are used to fix it to the bottom frame, achieving assembly and fixation between the tray and the bottom frame. Then, the battery cell is sealed with an air bag, and electrolyte is injected into the air bag. The air bag and the battery cell are then placed in the tray, with the battery cell positioned at an angle so that the electrolyte flows from the top to the bottom of the battery cell electrode surface, achieving full wetting of the battery cell electrode and electrolyte. This solves the problem of electrolyte trapped in the air bag after injection, resulting in product quality abnormalities due to the air bag not wetting the electrode, and reduces scrap costs.
[0008] Preferably, a flat pad is fixedly connected to the inner wall of the bottom shelf, and the surface of the flat pad is in contact with the bottom surface of the tray.
[0009] The effect achieved by the above components is that by setting up flat pads, the flat pads can provide auxiliary support to the bottom of the pallet, thereby improving the load-bearing capacity of the pallet.
[0010] Preferably, a silicone pad is fixedly connected to the inner wall of the tray.
[0011] The effect achieved by the above components is that by setting up the silicone pad, the silicone pad can increase the friction between the tray and the surface of the battery cell, so as to prevent the battery cell from shifting and affecting the downstream material handling.
[0012] Preferably, the inner wall slope of the tray is 45°.
[0013] The effect achieved by the above components is that by setting the inner wall slope of the tray to a 45° angle, the battery cells can be placed at a 45° angle, thus shortening the immersion time.
[0014] Preferably, the connecting device includes a first positioning block, which is bolted to the bottom frame. A second positioning block is fixedly connected to one side of the first positioning block. The surface size and shape of the second positioning block are adapted to the inner wall size and shape of the bottom frame. A third positioning block is bolted to the side of the bottom frame away from the first positioning block. The surface of the third positioning block is at the same height as the surface of the first positioning block.
[0015] The effect achieved by the above components is as follows: by setting up a connecting device, the first positioning block and the third positioning block are first fixed to the bottom frame with bolts. At this time, another bottom frame is manually moved so that when the other bottom frame moves to a position where it is in contact with the surface of the first positioning block and the third positioning block on the original bottom frame, the first positioning block and the third positioning block support the other bottom frame, so that the second positioning block is inserted into the interior of the other bottom frame and limits its position, thereby achieving the stacking and fixing of multiple bottom frames, reducing the problems of large space occupation, high energy consumption, inability to stack trolleys, and low space utilization.
[0016] Preferably, a slot is provided on one side of the first positioning block, and a card block is fixedly connected to one side of the bottom frame. The surface size and shape of the card block are adapted to the size and shape of the inner wall of the slot.
[0017] The effect achieved by the above components is as follows: by setting the locking block and the locking slot, after the bottom frame is attached to the surface of the first positioning block, the positioning block can be locked into the positioning slot to assist in limiting the stacked bottom frame, so that the bottom frame can be limited in multiple directions after being stacked, thereby improving the stacking stability.
[0018] The beneficial effects of this utility model are:
[0019] By setting up a support device, the battery cell is placed at a 45° angle in the tray, with the air bag facing upwards. The electrolyte flows from high to low into the battery cell body, which solves the problem of electrolyte being trapped in the air bag after injection and failing to wet the electrodes, causing product quality abnormalities. At the same time, it reduces scrap costs. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a three-dimensional structural diagram of the tray of this utility model;
[0023] Figure 3 This utility model Figure 2 Enlarged view of point A;
[0024] Figure 4 This is a top view of the bottom frame of this utility model;
[0025] Figure 5 This is a side view of the bottom frame of this utility model.
[0026] Legend: 1. Base; 2. Bottom frame; 3. Supporting device; 31. Tray; 32. Perforated plate; 33. Positioning piece; 34. Silicone pad; 35. Flat pad; 4. Connecting device; 41. First positioning block; 42. Second positioning block; 43. Slot; 44. Third positioning block; 45. Locking block. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Figure 1-5 The above describes a carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, including a base 1, a bottom frame 2 on one side of the base 1, a bearing device 3 inside the bottom frame 2, and a connecting device 4 on one side of the bottom frame 2.
[0030] Figure 2 The supporting device 3 shown includes a tray 31. Two perforated plates 32 are symmetrically fixedly connected to one side of the tray 31. Both perforated plates 32 are bolted to the bottom frame 2. Two positioning plates 33 are symmetrically fixedly connected to one side of the tray 31. Both positioning plates 33 are bolted to the bottom frame 2. The surface of the tray 31 engages with the inner wall of the bottom frame 2. By setting the supporting device 3, the tray 31 is first engaged into the interior of the bottom frame 2, so that the inner walls of the perforated plates 32 and the positioning plates are aligned with the inner walls of the threaded holes on the bottom frame 2. The components overlap, and bolts are used to fix them to the bottom frame 2, achieving assembly and fixation between the tray 31 and the bottom frame 2. The battery cell is then sealed with an air bag, and electrolyte is injected into the air bag. The air bag and the battery cell are then placed together in the tray 31, with the battery cell placed at an angle so that the air bag faces upward and the electrolyte flows from high to low onto the surface of the battery cell electrode. This ensures that the battery cell electrode and electrolyte are fully wetted, solving the problem of electrolyte trapped in the air bag after injection, which could cause product quality abnormalities and reduce scrap costs.
[0031] Figure 2 A flat pad 35 is fixedly connected to the inner wall of the bottom frame 2 shown. The surface of the flat pad 35 is in contact with the bottom surface of the tray 31. By setting the flat pad 35, the flat pad 35 can provide auxiliary support for the bottom of the tray 31 and improve the load-bearing capacity of the tray 31. A silicone pad 34 is fixedly connected to the inner wall of the tray 31. By setting the silicone pad 34, the silicone pad 34 can increase the friction between the tray 31 and the surface of the battery cell to prevent the battery cell from shifting and affecting the downstream material handling. The inner wall slope of the tray 31 is 45°. By setting the inner wall slope of the tray 31 to a 45° angle, the battery cell can be placed at a 45° angle, and the soaking time is shortened by 10%.
[0032] Figure 3 , Figure 4 and Figure 5The connecting device 4 shown includes a first positioning block 41, which is bolted to the bottom frame 2. A second positioning block 42 is fixedly connected to one side of the first positioning block 41. The surface size and shape of the second positioning block 42 are adapted to the size and shape of the inner wall of the bottom frame 2. A third positioning block 44 is bolted to the side of the bottom frame 2 away from the first positioning block 41. The surface of the third positioning block 44 is at the same height as the surface of the first positioning block 41. By setting the connecting device 4, the first positioning block 41 and the third positioning block 44 are first fixed to the bottom frame 2 with bolts. At this time, another bottom frame 2 is manually moved so that when the other bottom frame 2 moves to a position where it is in contact with the surface of the first positioning block 41 and the third positioning block 44 on the original bottom frame 2, the first positioning block 41 and the third positioning block 44 support the other bottom frame 2, so that the second positioning block 42 is inserted into the interior of the other bottom frame 2 and limits its position. This achieves the stacking and fixing of multiple bottom frames 2, reducing the problems of large space occupation, high energy consumption, inability to stack trolleys, and low space utilization.
[0033] Figure 3 , Figure 4 and Figure 5 The first positioning block 41 shown has a slot 43 on one side, and a locking block 45 is fixedly connected to one side of the bottom frame 2. The surface size and shape of the locking block 45 are adapted to the inner wall size and shape of the slot 43. By setting the locking block 45 and the slot 43, the bottom frame 2 is made to fit against the surface of the first positioning block 41, so that the positioning block can be inserted into the positioning slot to assist in limiting the stacked bottom frame 2. This allows the bottom frame 2 to be limited in multiple directions after being stacked, thereby improving the stacking stability.
[0034] Working principle: First, the tray 31 is inserted into the bottom frame 2, so that the inner wall of the perforated plate 32 and the positioning plate coincides with the inner wall of the threaded hole on the bottom frame 2. Then, bolts are used to fix it to the bottom frame 2, achieving the assembly and fixation between the tray 31 and the bottom frame 2. At this time, the battery cell is sealed by an air bag, and then electrolyte is injected into the air bag. Then, the air bag and the battery cell are placed together in the tray 31, so that the battery cell is placed at a 45° angle, so that the electrolyte flows from the top to the bottom of the battery cell electrode surface, achieving full wetting of the battery cell electrode and electrolyte.
[0035] First, the first positioning block 41 and the third positioning block 44 are fixed to the bottom frame 2 with bolts. Then, another bottom frame 2 is manually moved so that when the other bottom frame 2 moves to a position where it is in contact with the surface of the first positioning block 41 and the third positioning block 44 on the original bottom frame 2, the first positioning block 41 and the third positioning block 44 support the other bottom frame 2, so that the second positioning block 42 is inserted into the interior of the other bottom frame 2 and vertically limited, so that the locking block 45 on the other bottom frame 2 is inserted into the slot 43 and horizontally limited, thereby achieving the stacking and fixing of multiple bottom frames 2.
[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A carrier for high-temperature and room-temperature static placement of battery cells with gas bags after liquid injection, comprising a base (1), characterized in that: The base (1) has a bottom frame (2) on one side, and a bearing device (3) is provided inside the bottom frame (2). A connecting device (4) is provided on one side of the bottom frame (2). The bearing device (3) includes a tray (31). Two round hole plates (32) are symmetrically fixedly connected to one side of the tray (31). Both round hole plates (32) are bolted to the bottom frame (2). Two positioning pieces (33) are symmetrically fixedly connected to one side of the tray (31). Both positioning pieces (33) are bolted to the bottom frame (2). The surface of the tray (31) is engaged with the inner wall of the bottom frame (2).
2. The carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, as described in claim 1, is characterized in that: A flat pad (35) is fixedly connected to the inner wall of the bottom shelf (2), and the surface of the flat pad (35) is in contact with the bottom surface of the tray (31).
3. The carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, as described in claim 1, is characterized in that: A silicone pad (34) is fixedly connected to the inner wall of the tray (31).
4. A carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, as described in claim 1, is characterized in that: The inner wall slope of the tray (31) is 45°.
5. A carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, as described in claim 1, characterized in that: The connecting device (4) includes a first positioning block (41), which is bolted to the bottom frame (2). A second positioning block (42) is fixedly connected to one side of the first positioning block (41). The surface size and shape of the second positioning block (42) are adapted to the size and shape of the inner wall of the bottom frame (2). A third positioning block (44) is bolted to the side of the bottom frame (2) away from the first positioning block (41). The surface of the third positioning block (44) is at the same height as the surface of the first positioning block (41).
6. A carrier for high-temperature and room-temperature static placement of battery cells with air bags after liquid injection, as described in claim 5, is characterized in that: The first positioning block (41) has a slot (43) on one side, and a card block (45) is fixedly connected to one side of the bottom frame (2). The surface size and shape of the card block (45) are adapted to the size and shape of the inner wall of the slot (43).