Lithium battery pole piece transfer device

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a lithium battery pole piece transfer device, which comprises a main box body, a sealing ring and a movable box, the main box body comprises an assembling part and a reaction part, the assembling part is arranged above the reaction part, the assembling part is communicated with the reaction part, a gas one-way valve and a water injection valve are arranged on the assembling part, and the sealing ring is arranged on the main box body. The main box body is provided with an assembling part, the assembling part is provided with an opening platform for placing a pole piece, the opening platform is sealed through a sealing cover, the assembling part is provided with a notch for inserting the movable box, and a spring is arranged between the movable box and the main box body. According to the utility model, when the reaction box is vacuumized until the internal and external pressure difference of the main box body is small, the movable box is automatically popped out under the elastic force of the spring, so that the pole piece is automatically exposed, and the accuracy of detection data is improved; the pole piece can be stored for a long time or transferred for a long distance, the pole piece is prevented from reacting with moisture or gas in air in the process, and the subsequent detection result is prevented from being inaccurate.

Description

Technical Field

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

[0002] Among the many causes of battery safety incidents, lithium plating is a significant one. Lithium plating leads to capacity decay, increases battery side reactions, and lithium dendrites pose a risk of piercing the separator, causing internal short circuits and thermal runaway. Therefore, lithium plating detection is a key issue in battery safety research. Current technology mainly involves placing lithium battery electrodes in a sealed environment to react chemically with water, generating gas, and then collecting and analyzing the reaction gas. However, electrodes are not easy to store or transfer; moreover, when placed in a sealed space, the electrodes are often exposed. This means that after the electrodes are placed in the reaction chamber, a series of preparatory processes must be completed before reaction and testing can begin. It is impossible to automatically expose the electrodes after the reaction chamber has completed its preparatory processes. Since moisture is also present in the air, this can lead to slight deviations in the final test results. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery electrode transfer device, which solves the problems of existing technology which makes it inconvenient to transfer and store electrodes, and the inability to automatically expose the electrodes after the reaction chamber has completed the preparation process when conducting water reaction detection on lithium battery electrodes, resulting in inaccurate detection data.

[0004] This utility model is achieved through the following technical solution: a lithium battery electrode transfer device, including a main box, a sealing ring, and a movable box. The main box includes an assembly part and a reaction part. The assembly part is installed above the reaction part and is connected to the reaction part. The assembly part is provided with a gas one-way valve and a water injection valve. The assembly part is provided with an opening platform for inserting the electrode. The opening platform is sealed by a sealing cover. The assembly part is provided with a slot for the movable box to be inserted. A spring is provided between the movable box and the assembly part.

[0005] The movable box can be pressed against the slot of the assembly part to form a seal on the inside of the main box. By drawing air out of the main box through the gas one-way valve, a negative pressure can be formed inside the main box and maintained in a negative pressure state. If the force formed by the pressure difference between the inside and outside of the main box is less than the spring force, the movable box is ejected from the assembly part by the spring.

[0006] To better realize this utility model, the movable box further includes a box cover and a box compartment. The slot is for the box compartment to be inserted. The box cover is provided with a first connecting ear with a through hole. The assembly part is provided with a second connecting ear with a threaded hole. The spring is disposed between the first connecting ear and the second connecting ear. A screw is threadedly connected to the second connecting ear. The screw passes through the through hole on the first connecting ear.

[0007] To better realize this utility model, the number of the first connecting ears is the same as that of the second connecting ears, and there are two of them.

[0008] To better realize this utility model, the opening platform is further provided with an installation groove for installing the sealing ring, and the periphery of the groove is provided with an installation groove for installing the sealing ring.

[0009] To better realize this utility model, the main box body is further made of transparent acrylic sheet.

[0010] To better realize this utility model, the reaction section is further provided with scale lines.

[0011] To better realize this utility model, the bottom of the reaction section is further provided with two positioning blind holes for positioning and fixing the overall device.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] (1) By setting up a movable box, screw and spring, this utility model solves the problem that the existing technology cannot automatically expose the electrode for reaction after the reaction box has completed the preparation process. It realizes that when the vacuum degree of the reaction box is similar to that of the main box, the pressure difference between the inside and outside decreases, and the movable box automatically pops out under the spring force to expose the electrode automatically, thus improving the accuracy of the detection data.

[0014] (2) By setting up an active box, this utility model can preserve the electrode for a long time or transfer it over a long distance, preventing the electrode from reacting with moisture or gas in the air during the process, and preventing inaccurate subsequent test results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the main box structure.

[0017] Figure 3 This is a schematic diagram of the box lid structure.

[0018] Figure 4 This is a schematic diagram of the open and closed state of this utility model.

[0019] Wherein: 1-Main box body; 101-Reaction section; 102-Assembly section; 2-Gas one-way valve; 3-Sealing cover; 4-Water injection valve; 5-Sealing ring; 6-Moving box; 601-Box compartment; 602-Box cover; 7-Screw; 8-Spring; 9-Scale line. Detailed Implementation

[0020] 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.

[0021] Example 1:

[0022] This embodiment provides a lithium battery electrode transfer device, such as... Figures 1-4 As shown, the assembly includes a main box 1, a sealing ring 5, and a movable box 6. The main box 1 includes an assembly part 102 and a reaction part 101. The assembly part 102 is installed above the reaction part 101 and is connected to the reaction part 101. The assembly part 102 is provided with a gas one-way valve 2 and a water injection valve 4. The assembly part 102 is provided with an opening platform for inserting electrode sheets. The opening platform is sealed by a sealing cover 3. The assembly part 102 is provided with a slot for the movable box 6 to be inserted. A spring 8 is provided between the movable box 6 and the assembly part 102.

[0023] After the staff overcomes the elastic force of the spring 8 and manually presses the movable box 6 into the slot, the air inside the main box 1 is extracted through the gas one-way valve 2, so that a negative pressure is formed inside the main box 1 and maintained in a negative pressure state. Then, the movable box 6 is attached to the assembly part 102 under the force formed by the pressure difference. When conducting the water reaction experiment, the main box 1 is placed in the reaction chamber and the reaction chamber is evacuated. The closer the vacuum degree inside the reaction chamber is to the vacuum degree inside the main box 1, the smaller the pressure difference between the inside and outside of the main box 1. When the force formed by the pressure difference between the inside and outside of the main box 1 is less than the elastic force of the spring 8, the movable box 6 will be ejected from the assembly part 102 by the spring 8. At this time, the main box 1 is connected to the reaction chamber through the movable box 6.

[0024] Example 2:

[0025] This embodiment is a further extension of Embodiment 1, specifically as follows: Figures 1-4As shown, the movable box 6 includes a box cover 602 and a box compartment 601. The slot allows the box compartment 601 to be inserted. The box compartment 601 has guide rails on both sides, which cooperate with the movable box 602 through sliding grooves. The box cover 602 is provided with a first connecting ear with a through hole. The assembly part 102 is provided with a second connecting ear with a threaded hole. The spring 8 is provided between the first connecting ear and the second connecting ear. The second connecting ear is threadedly connected to a screw 7, which passes through the through hole on the first connecting ear.

[0026] The operator can rotate screw 7 to keep the movable box 6 pressed against the assembly part 102. Therefore, when vacuuming the main box 1, it is not necessary to maintain the position of the movable box 6. When conducting the water reaction test, screw 7 needs to be turned to reset in advance so that it no longer limits the position of the movable box 6.

[0027] Example 3:

[0028] This embodiment is a further extension of embodiment 2, as follows: Figures 1-4 As shown, the number of the first connecting ears is the same as that of the second connecting ears, and there are two of them; the rectangular opening platform has an installation groove for installing the sealing ring 5, and the groove opening has an installation groove for installing the sealing ring 5; the main box 1 is made of transparent acrylic sheet; the reaction part 101 is provided with scale lines 9; the bottom of the reaction part 101 is provided with two positioning blind holes for positioning and fixing the overall device.

[0029] The working principle of this technical solution is as follows: Figure 4 As shown, the device with the movable box 6 in the pop-out state and the electrode are placed in a glove box filled with inert gas, and the water injection valve 4 is closed. Then, the glove box is evacuated multiple times to remove any air introduced by the device. After the operation is complete, the glove box is filled with inert gas again, and then the bolt is tightened to remove the sealing cover 3. The pre-made electrode is placed in the reaction section 101, and then the sealing cover 3 is replaced. The bolt is tightened, pressing the sealing cover 3 against the corresponding sealing ring 5. Then, the screw 7 is tightened, causing the box cover 602 to press against the corresponding sealing ring 5, compressing the spring 8, thus achieving a complete seal of the main box 1. Next, the device is removed from the glove box, and a vacuum pump connected to the gas check valve 2 is used to evacuate the inside of the main box 1, creating a negative pressure inside and outside the main box 1. At this time, the electrode can be transferred over long distances or stored for a long time to prevent the electrode from reacting with moisture or gases in the air.

[0030] When conducting an experiment involving the reaction of the electrode with water, open the door of the specific reaction chamber and place the device inside. Secure the device to the bottom plate of the reaction chamber using the positioning blind hole at the bottom of the main body 1. Then, loosen the screw 7 to a certain position. Because the pressure difference between the inside and outside of the main body 1 is greater than the elastic force of the spring 8, the cover 602 will always press against the sealing ring 5 to maintain a seal. Next, connect the water supply valve of the reaction chamber to the water injection valve 4 using a water pipe and open the switch of the water injection valve 4. At this time, the water supply valve of the reaction chamber is in the closed state. Due to the pressure difference, the device remains in a sealed and closed state. Next, the reaction chamber door is closed, and the reaction chamber is evacuated. When a certain vacuum level is reached inside the reaction chamber, the pressure difference between the inside and outside of the main box 1 decreases. When the pressure difference force is less than the elastic force of the spring 8, the spring 8 pops out the movable box 6, and the inside and outside of the main box 1 are connected through the box compartment 601. At this time, the water supply valve of the reaction chamber is opened, and water begins to be injected into the main box 1. The amount of water injected is controlled by observing the scale line 9. Then, the electrode reacts with the water to produce gas. The gas is dispersed from the box compartment 601 into the entire reaction chamber. After the reaction is completed, the gas in the reaction chamber can be extracted for detection and analysis.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A lithium battery electrode transfer device, characterized in that: The assembly includes a main box (1), a sealing ring (5), and a movable box (6). The main box (1) includes an assembly part (102) and a reaction part (101). The assembly part (102) is installed above the reaction part (101) and is connected to the reaction part (101). The assembly part (102) is provided with a gas one-way valve (2) and a water injection valve (4). The assembly part (102) is provided with an opening platform for inserting the electrode. The opening platform is sealed by a sealing cover (3). The assembly part (102) is provided with a slot for the movable box (6) to be inserted. A spring (8) is provided between the movable box (6) and the assembly part (102). The movable box (6) is pressed against the slot of the assembly part (102) to form a seal on the inside of the main box (1). The air inside the main box (1) is extracted by the gas one-way valve (2) to form a negative pressure inside the main box (1) and maintain the negative pressure state. If the force formed by the pressure difference between the inside and outside of the main box (1) is less than the elastic force of the spring (8), the movable box (6) will be ejected from the assembly part (102) by the spring (8).

2. The lithium battery electrode transfer device according to claim 1, characterized in that: The active box (6) includes a box cover (602) and a box compartment (601). The slot is for the box compartment (601) to be inserted. The box cover (602) is provided with a first connecting ear with a through hole. The assembly part (102) is provided with a second connecting ear with a threaded hole. The spring (8) is provided between the first connecting ear and the second connecting ear. The second connecting ear is threaded with a screw (7). The screw (7) passes through the through hole on the first connecting ear.

3. The lithium battery electrode transfer device according to claim 2, characterized in that: The number of the first connecting ears is the same as that of the second connecting ears, and there are two of them.

4. The lithium battery electrode transfer device according to claim 2, characterized in that: The opening platform has an installation groove for installing the sealing ring (5), and the outer periphery of the groove has an installation groove for installing the sealing ring (5).

5. A lithium battery electrode transfer device according to any one of claims 1-4, characterized in that: The main box (1) is made of transparent acrylic sheet.

6. A lithium battery electrode transfer device according to claim 5, characterized in that: The reaction section (101) is provided with scale lines (9).

7. A lithium battery electrode transfer device according to claim 5, characterized in that: The bottom of the reaction section (101) is provided with two positioning blind holes for positioning and fixing the overall device.

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