Sodium ion battery processing electrolyte filling device

Abstract

The utility model discloses a kind of sodium ion battery processing electrolyte filling devices, including sealed box and electric push rod being installed in the top of sealed box, the both sides of the sealed box are movably installed with closure plate, the inside fixed mounting of the sealed box is with battery holder, the both sides of the bottom of the sealed box are fixedly installed with drying box, the utility model relates to sodium ion battery processing technical field.This sodium ion battery processing electrolyte filling device, through the cooperation between sealed box and drying box, can fill electrolyte to sodium ion battery in dry environment, avoid the moisture in air into sodium ion battery internal cause electrolyte decomposition, and generate HF and corrode battery material condition, through the cooperation of suction head and suction pipe, can carry out vacuumizing treatment to its inside before device fills electrolyte to sodium ion battery, can remove residual moisture and gas in electrode and diaphragm, improve electrolyte immersion efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of sodium-ion battery processing technology, specifically to a sodium-ion battery electrolyte filling device. Background Technology

[0002] Sodium-ion batteries are rechargeable batteries that use sodium ions (Na+) as charge carriers. They are considered a potential alternative to lithium-ion batteries (Li-ion), especially in energy storage and low-speed electric vehicles. Sodium-ion batteries require electrolyte filling during processing, so electrolyte filling equipment is needed.

[0003] The "Electrolyte Filling Device for Sodium-ion Battery Processing" disclosed in publication number "CN218464019U" includes a workbench, sodium-ion batteries are arranged around the top of the workbench, a rotary filling mechanism for use with sodium-ion batteries is arranged on the workbench, and a feeding mechanism for use with sodium-ion batteries is arranged on one side of the workbench.

[0004] Traditional filling devices mostly employ an open structure, making it impossible to control the dryness of the electrolyte during sodium-ion battery filling. When moisture from the air enters the sodium-ion battery, it causes the electrolyte to decompose, generating HF that corrodes the battery materials. Furthermore, there is no function to vacuum the inside of the battery before filling, resulting in insufficient filling of the electrode pores during filling and obstruction of ion transport paths, leading to low capacity and poor rate performance of the sodium-ion battery. To address these issues, we have designed a sodium-ion battery electrolyte filling device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a sodium-ion battery electrolyte filling device, which solves the problems of not being able to fill sodium-ion batteries with electrolyte in a dry environment, causing moisture to decompose the electrolyte, and lacking the function of vacuuming the inside of the battery, resulting in the electrolyte not being able to fully fill the electrode pores during filling, obstructing the ion transport path, and causing low capacity and poor rate performance of sodium-ion batteries.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a sodium-ion battery electrolyte filling device, comprising a sealed box and an electric push rod installed on the top of the sealed box;

[0007] Both sides of the sealed box are movably fitted with closing plates. A battery holder is fixedly installed inside the sealed box. Drying boxes are fixedly installed on both sides of the bottom of the sealed box. A filter plate is fixedly installed on the top of the drying box. A hair dryer is fixedly installed on the bottom of the drying box.

[0008] The bottom of the electric push rod extends into the interior of the sealed box. A lifting plate is fixedly installed at the output end of the electric push rod. A filling head is movably installed on one side of the bottom of the lifting plate, and an air extraction head is movably installed on the other side of the lifting plate. An air extraction pipe extending to the back of the sealed box is fixedly installed at the top of the air extraction head. Support springs sleeved on the outside of the filling head and the air extraction head are provided at the bottom of the lifting plate. A liquid storage tank is fixedly installed on one side of the back of the sealed box. A squeezing push rod is fixedly installed at the bottom of the liquid storage tank. The output end of the squeezing push rod extends into the interior of the liquid storage tank and is fixedly installed with a push plate. An injection pipe connected to the filling head is fixedly installed on the front side of the top of the liquid storage tank.

[0009] Preferably, a raw liquid pipe is fixedly installed on the rear side of the top of the storage tank, and a solenoid valve is fixedly connected to the back of the raw liquid pipe.

[0010] Preferably, mounting shafts are fixedly installed on the outer sides of the top and bottom of the closing plate, and reset torsion springs are sleeved on the outside of the mounting shafts.

[0011] Preferably, two sets of clamping push rods are fixedly installed on both the front and back of the battery holder, and clamping plates are fixedly installed on the output ends of the clamping push rods.

[0012] Preferably, an observation window is fixedly installed on the front of the sealed box.

[0013] Preferably, support frames are fixedly installed on both sides of the bottom of the sealed box, and foot plates are fixedly installed on the bottom of each support frame.

[0014] This invention provides a sodium-ion battery electrolyte filling device. Compared with the prior art, it has the following advantages:

[0015] (1) The sodium-ion battery electrolyte filling device can fill the sodium-ion battery with electrolyte in a dry environment by cooperating between the sealed box and the drying box, which avoids moisture in the air from entering the sodium-ion battery and causing electrolyte decomposition and generating HF to corrode the battery material, thus increasing the safety of the device when filling the sodium-ion battery electrolyte.

[0016] (2) By combining the vacuum head and vacuum pipe, the inside of the sodium-ion battery can be vacuumed before the device fills the electrolyte. Vacuuming the inside of the sodium-ion battery can remove residual moisture and gas from the electrodes and separator, while improving the electrolyte wetting efficiency and ensuring the performance of the sodium-ion battery during use. 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 schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the drying box structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the clamping push rod structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the back structure of this utility model.

[0022] Figure 6 This is a schematic cross-sectional view of the liquid storage tank of this utility model.

[0023] Figure 7 This is a schematic diagram of the mounting shaft structure of this utility model.

[0024] In the diagram: 1. Sealed box; 101. Closing plate; 102. Observation window; 103. Support frame; 104. Foot plate; 105. Mounting shaft; 106. Return torsion spring; 2. Electric push rod; 201. Lifting plate; 202. Filling head; 203. Vacuum head; 204. Support spring; 205. Vacuum pipe; 3. Battery holder; 301. Clamping push rod; 302. Clamping plate; 4. Drying box; 401. Blower; 402. Filter plate; 5. Liquid storage tank; 501. Injection pipe; 502. Raw liquid pipe; 503. Squeezing push rod; 504. Push plate. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] Example 1

[0027] Please see Figure 1-3As shown, this embodiment proposes a sodium-ion battery electrolyte filling device, including a sealed box 1 and an electric push rod 2 installed on the top of the sealed box 1. Closing plates 101 are movably installed on both sides of the sealed box 1. A battery holder 3 is fixedly installed inside the sealed box 1. A drying box 4 is fixedly installed on both sides of the bottom of the sealed box 1. A filter plate 402 is fixedly installed on the top of the drying box 4. A blower 401 is fixedly installed on the bottom of the drying box 4.

[0028] In use, the sodium-ion battery enters the sealed box 1 through the closing plate 101, and the battery holder 3 supports and places the sodium-ion battery being filled. The drying box 4 installed at the bottom of the sealed box 1 contains molecular sieve desiccant, and a blower 401 is fixedly installed at the bottom of each drying box 4. The blower 401 blows air through the drying box 4 to treat the inside of the sealed box 1. When the gas passes through the drying box 4, the molecular sieve desiccant inside can adsorb and remove moisture, thereby dehumidifying the inside of the sealed box 1. By dehumidifying the inside of the sealed box 1, the dryness of its interior can be ensured during operation, avoiding the situation where high humidity inside the sealed box 1 enters the sodium-ion battery and causes electrolyte decomposition and the generation of HF that corrodes the battery material. This increases the stability of the device when filling the sodium-ion battery with electrolyte.

[0029] Example 2

[0030] Based on Example 1, such as Figure 3-6 As shown, the bottom of the electric push rod 2 extends into the interior of the sealed box 1. A lifting plate 201 is fixedly installed at the output end of the electric push rod 2. A filling head 202 is movably installed on one side of the bottom of the lifting plate 201. An air extraction head 203 is movably installed on the other side of the lifting plate 201. An air extraction pipe 205 extending to the back of the sealed box 1 is fixedly installed on the top of the air extraction head 203. Support springs 204 are provided at the bottom of the lifting plate 201 and sleeved on the outside of the filling head 202 and the air extraction head 203. A liquid storage tank 5 is fixedly installed on one side of the back of the sealed box 1. A squeezing push rod 503 is fixedly installed at the bottom of the liquid storage tank 5. The output end of the squeezing push rod 503 extends into the interior of the liquid storage tank 5 and is fixedly installed with a push plate 504. An injection pipe 501 connected to the filling head 202 is fixedly installed on the front side of the top of the liquid storage tank 5.

[0031] In use, the electric push rod 2 extends to lower the lifting plate 201. During the descent of the lifting plate 201, the filling head 202 and the vacuum head 203 are inserted into the filling hole of the sodium-ion battery. The vacuum head 203 is connected to an external vacuuming device through the vacuum pipe 205. By inserting the external vacuuming device and the vacuum head 203, a vacuum treatment can be performed on the inside of the sodium-ion battery before filling. By vacuuming the inside of the sodium-ion battery, residual moisture and gas in the electrodes and separator can be removed, and the electrolyte wetting effect can be improved. To ensure the performance of sodium-ion batteries, the system automatically fills the electrolyte in the electrode pores, preventing insufficient electrolyte filling and obstruction of ion transport paths, which would otherwise result in low capacity and poor rate performance. After vacuuming the inside of the sodium-ion battery, the pusher 503 extends to push the pusher plate 504 inside the storage tank 5. The pusher plate 504 then injects the electrolyte from inside the storage tank 5 into the sodium-ion battery through the injection pipe 501 and the filling head 202, thus achieving automatic filling during the production and processing of sodium-ion batteries.

[0032] like Figure 5-6 As shown, a raw liquid pipe 502 is fixedly installed on the rear side of the top of the liquid storage tank 5, and a solenoid valve is fixedly connected to the back of the raw liquid pipe 502.

[0033] In use, the raw liquid pipe 502 is connected to the external electrolyte pipe, which facilitates the entry of electrolyte into the storage tank 5. The raw liquid pipe 502 and the electrolyte pipe are connected by a solenoid valve, which can control the opening and closing of the raw liquid pipe 502 and also prevent backflow when the push plate 504 pushes the electrolyte inside the storage tank 5.

[0034] like Figure 7 As shown, mounting shafts 105 are fixedly installed on the outer sides of the top and bottom of the closed plate 101, and reset torsion springs 106 are sleeved on the outside of the mounting shafts 105.

[0035] In use, the mounting shaft 105 can be movably mounted on both sides of the closing plate 101, and the reset torsion spring 106 can automatically close after the sodium ion battery enters and exits, thus preventing or reducing the entry of external moisture into the sealed box 1.

[0036] like Figure 4 As shown, two sets of clamping push rods 301 are fixedly installed on both the front and back of the battery holder 3, and clamping plates 302 are fixedly installed on the output ends of the clamping push rods 301.

[0037] In use, the clamping push rod 301 can retract to retract the clamping plate 302, thereby clamping and fixing the sodium-ion battery on the battery holder 3 through the retracted clamping plate 302, ensuring the stability of the device when filling electrolyte into the sodium-ion motor.

[0038] like Figure 1 As shown, an observation window 102 is fixedly installed on the front of the sealed box 1.

[0039] When in use, the observation window 102 facilitates observation of the sodium-ion battery during electrolyte filling, allowing staff to understand the status of the device during operation.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, support frames 103 are fixedly installed on both sides of the bottom of the sealed box 1, and foot plates 104 are fixedly installed on the bottom of the support frames 103.

[0041] In use, the support frame 103 can support the bottom during operation, and the foot plate 104 increases the force-bearing area at the bottom of the support frame 103, thereby improving the stability of the support frame 103 when supporting the device and ensuring the stability of the device during operation.

[0042] Working principle: An external robotic arm places the sodium-ion battery into the sealed box 1 through the closing plate 101. The battery holder 3 supports the sodium-ion battery to be filled with electrolyte. The sealed box 1 is closed during the filling process. The molecular sieve desiccant and blower 401 inside the drying box 4 dehumidify the inside of the sealed box 1. This dehumidification ensures the dryness of the sodium-ion battery during filling, preventing moisture from the air from entering the sodium-ion battery and causing electrolyte decomposition and generating HF that corrodes the battery material. This increases the safety of the device during electrolyte filling. An external vacuum device, through the vacuum head 203 and vacuum pipe 205, can vacuum the sodium-ion battery before electrolyte filling. Vacuuming the inside of the sodium-ion battery removes water and gas, ensures chemical stability, promotes electrolyte wetting, and optimizes electrochemical performance. The filling head 202 fills the inside of the sodium-ion battery after vacuuming.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A sodium-ion battery electrolyte filling device, characterized in that: Includes a sealed box and an electric push rod mounted on top of the sealed box; Both sides of the sealed box are movably fitted with closing plates. A battery holder is fixedly installed inside the sealed box. Drying boxes are fixedly installed on both sides of the bottom of the sealed box. A filter plate is fixedly installed on the top of the drying box. A hair dryer is fixedly installed on the bottom of the drying box. The bottom of the electric push rod extends into the interior of the sealed box. A lifting plate is fixedly installed at the output end of the electric push rod. A filling head is movably installed on one side of the bottom of the lifting plate, and an air extraction head is movably installed on the other side of the lifting plate. An air extraction pipe extending to the back of the sealed box is fixedly installed at the top of the air extraction head. Support springs sleeved on the outside of the filling head and the air extraction head are provided at the bottom of the lifting plate. A liquid storage tank is fixedly installed on one side of the back of the sealed box. A squeezing push rod is fixedly installed at the bottom of the liquid storage tank. The output end of the squeezing push rod extends into the interior of the liquid storage tank and is fixedly installed with a push plate. An injection pipe connected to the filling head is fixedly installed on the front side of the top of the liquid storage tank.

2. The sodium-ion battery electrolyte filling device according to claim 1, characterized in that: A raw liquid pipe is fixedly installed on the rear side of the top of the storage tank, and a solenoid valve is fixedly connected to the back of the raw liquid pipe.

3. The sodium-ion battery electrolyte filling device according to claim 1, characterized in that: Mounting shafts are fixedly installed on the outer sides of the top and bottom of the closing plate, and reset torsion springs are sleeved on the outside of the mounting shafts.

4. The sodium-ion battery electrolyte filling device according to claim 1, characterized in that: Two sets of clamping push rods are fixedly installed on both the front and back of the battery holder, and clamping plates are fixedly installed on the output ends of the clamping push rods.

5. The sodium-ion battery electrolyte filling device according to claim 1, characterized in that: An observation window is fixedly installed on the front of the sealed box.

6. The sodium-ion battery electrolyte filling device according to claim 1, characterized in that: Support frames are fixedly installed on both sides of the bottom of the sealed box, and foot plates are fixedly installed on the bottom of each support frame.

Images