A lithium primary battery full-sealed electrolyte stirring device

Abstract

The utility model discloses a kind of lithium primary battery fully-sealed electrolyte stirring device, including feed flange, sight glass, pressure gauge, top head, tank main body flange, tank body, main stirring device, auxiliary stirring device, discharge flange;The main stirring device is composed of main stirrer and main motor, and the auxiliary stirring device is composed of auxiliary stirrer and auxiliary motor;The feed flange is located on the top head;The discharge flange is located below the tank body;The sight glass is located on the top head;The pressure gauge is located on the top head, and is connected with the top head;The tank main body flange is connected on the tank body, and the tank main body flange is connected by bolt sleeve with top head;The main stirring device and the auxiliary stirring device are located in the lower part of the tank body.The utility model uses main auxiliary double stirrers, fully forms three-dimensional turbulent flow, can reduce stirring time, and main auxiliary double stirrers rely on electromagnetic induction to transfer stirring torque, guarantee tank body sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of lithium primary battery production technology, and in particular to a fully sealed electrolyte stirring device for lithium primary batteries. Background Technology

[0002] In the field of lithium primary battery manufacturing, electrolyte is the core medium for realizing the electrochemical reaction of the battery. Its quality directly determines the discharge efficiency, storage life, safety performance and batch consistency of lithium primary batteries, and is a key factor affecting the competitiveness of battery products.

[0003] The current mainstream method for preparing lithium primary battery electrolytes involves adding electrolytes, electrolyte solvents, and other materials into a glass reactor, and then using a mechanically connected spiral stirrer to mix the materials evenly, such as the fully sealed lithium primary battery electrolyte stirring device produced by Qiyu Industrial (Shanghai) Co., Ltd. This fully sealed lithium primary battery electrolyte stirring device has the following drawbacks: First, the tank has poor sealing, making it prone to leakage at connections and rotating parts; lithium primary battery electrolytes often contain harmful materials, and harmful components may be released during the preparation process, affecting the health of operators and even leading to electrolyte component loss. It may also allow harmful impurities such as water to enter the electrolyte system; Second, the stirring effect is poor, requiring a long stirring time for thorough mixing of the electrolyte; Third, it cannot prepare electrolytes that require sealed preparation and pressure. Utility Model Content

[0004] To address the problems existing in current fully sealed electrolyte stirring devices for lithium primary batteries, this invention provides a fully sealed electrolyte stirring device, which adopts the following technical solution:

[0005] A fully sealed electrolyte stirring device for lithium primary batteries includes a feed flange, a sight glass, a pressure gauge, a top end cap, a tank body flange, a tank body, a main stirring device, a secondary stirring device, and a discharge flange. The main stirring device consists of a main stirrer and a main motor, and the secondary stirring device consists of a secondary stirrer and a secondary motor. The feed flange is located on the top end cap. The discharge flange is located below the tank body. The sight glass is located on the top end cap. The pressure gauge is located on the top end cap and connected to it. The tank body flange is connected to the tank body, and the tank body flange is bolted to the top end cap. The main stirring device and the secondary stirring device are located at the bottom of the tank body.

[0006] Furthermore, the sight glass is made of heat-resistant glass.

[0007] Furthermore, the tank body and the top end cap are made of stainless steel, and the sealed assembly has a certain pressure resistance.

[0008] Furthermore, a PTFE gasket or fluororubber ring is added between the tank body flange and the top end cap to enhance the sealing performance.

[0009] Furthermore, the main stirring device consists of the main motor and electromagnetic drive outside the lithium primary battery fully sealed electrolyte stirring device, and the main stirrer inside the lithium primary battery fully sealed electrolyte stirring device provides rotational torque through electromagnetic induction.

[0010] Furthermore, the auxiliary stirring device consists of an auxiliary motor and electromagnetic drive outside the fully sealed electrolyte stirring device for lithium primary batteries, which provides rotational torque to the auxiliary stirrer inside the fully sealed electrolyte stirring device for lithium primary batteries through electromagnetic induction.

[0011] Furthermore, the main stirring device and the auxiliary stirring device use a double-helix counter-rotating configuration.

[0012] Furthermore, the main stirring device and the auxiliary stirring device together constitute a three-dimensional stirred liquid flow.

[0013] Furthermore, the feed flange, the tank body flange, and the discharge flange are connected by bolts, with a fluororubber ring added in between to enhance sealing.

[0014] The innovative points and effects of this utility model are as follows:

[0015] 1. The drive motor of this utility model is mechanically separated from the internal rotating parts, and the stirring torque is transmitted by electromagnetic induction to ensure the sealing performance of the tank.

[0016] 2. This utility model adopts a main and auxiliary dual agitator to fully form three-dimensional turbulence, which can reduce the mixing time;

[0017] 3. All tank seals of this utility model are achieved by welding or using PTFE gaskets and fluororubber rings, with no rotating moving parts, thus ensuring full sealing and corrosion resistance.

[0018] Instruction manual illustrations

[0019] Figure 1 This is a schematic diagram of the structure of the fully sealed electrolyte stirring device for lithium primary batteries according to this utility model. Detailed Implementation

[0020] like Figure 1 As shown, this utility model proposes a fully sealed electrolyte stirring device for lithium primary batteries, including a feed flange 1, a sight glass 2, a pressure gauge 3, a top sealing head 5, a tank body flange 6, a tank body 7, a main stirring device, a secondary stirring device, and a discharge flange 12; the main stirring device consists of a main stirrer 10 and a main motor 11, and the secondary stirring device consists of a secondary stirrer 8 and a secondary motor 9;

[0021] The feed flange 1 is located on the top end cap 5. The opening size of the feed flange 1 is configured according to actual use, and it provides both a material inlet channel and a pressure inert gas injection channel.

[0022] The discharge flange 12 is located below the tank body 7. The opening size of the discharge flange 12 is configured according to actual use. The discharge flange 12 provides a material discharge channel.

[0023] The sight glass 2 is located on the top end cap 5. The sight glass 2 is made of high-quality heat-resistant glass through a special process. Its size and glass thickness are configured according to actual use.

[0024] The pressure gauge 3 is located on the top sealing head 5 and is connected to the top sealing head 5;

[0025] The tank body 7 and the top end cap 5 are made of stainless steel, and the sealed assembly has a certain pressure resistance.

[0026] The tank body flange 6 is connected to the tank body 7. The tank body flange 6 and the top end cap 5 are connected by bolts. A PTFE gasket 4 or a fluororubber ring 4 is added between the tank body flange 6 and the top end cap 5.

[0027] The main stirring device is located at the lower part of the tank 7. The main stirring device is driven by the main motor 11 outside the lithium primary battery fully sealed electrolyte stirring device and electromagnetic drive, and provides rotational torque to the main stirrer 10 inside the lithium primary battery fully sealed electrolyte stirring device through electromagnetic induction.

[0028] The auxiliary stirring device is located at the bottom of the tank 7. The auxiliary stirring device is driven by the auxiliary motor 9 outside the lithium primary battery fully sealed electrolyte stirring device and electromagnetic drive. It provides rotational torque to the auxiliary stirrer 8 inside the lithium primary battery fully sealed electrolyte stirring device through electromagnetic induction.

[0029] The main stirring device and the auxiliary stirring device use a double-helix reverse configuration to increase the shear stress during liquid mixing.

[0030] The main stirring device and the auxiliary stirring device together form a three-dimensional stirred liquid flow;

[0031] The feed flange 1, the tank body flange 6, and the discharge flange 12 are connected by bolts, with a fluororubber ring inserted in the middle.

[0032] The working principle of the fully sealed electrolyte stirring device for lithium primary batteries of this utility model is as follows:

[0033] This invention achieves fully sealed, efficient, and pressure-resistant electrolyte preparation through a sealed structure design, electromagnetic drive transmission, and the synergistic effect of dual stirring. The specific working principle is as follows:

[0034] (1) Construction and pressure regulation of a fully sealed system

[0035] The device is based on a "non-mechanical rotation penetration + multiple sealing reinforcement" system to ensure the airtightness of the preparation process. The tank body 7 and top end cap 5 are bolted together via the tank body flange 6, with a PTFE gasket or fluororubber ring installed in between to form the main seal. The inlet flange 1 and outlet flange 12 are both connected to the tank body using a bolt-fixed + fluororubber ring sealing structure. Combined with the pressure-resistant properties of the tank body's stainless steel material, a fully enclosed cavity is constructed, eliminating the risk of leakage caused by rotating moving parts. During the feeding stage, the electrolyte raw materials (electrolyte, solvent, etc.) are injected through the inlet flange 1. Simultaneously, inert protective gas can be introduced through this flange. Combined with the pressure gauge 3 on the top end cap 5, the pressure inside the tank is monitored in real time, creating a stable pressure environment that meets the requirements of sealed pressurized electrolyte preparation. This prevents the escape of harmful components, protects the health of operators, and avoids the intrusion of moisture and other impurities into the electrolyte system.

[0036] (2) Synergistic effect of electromagnetic induction drive and three-dimensional stirring

[0037] The stirring power transmission adopts a "non-contact electromagnetic induction" mode, avoiding the sealing defects of traditional mechanical connections: After the main motor 11 and auxiliary motor 9 outside the lithium primary battery fully sealed electrolyte stirring device are started, they transmit rotational torque to the main stirrer 10 and auxiliary stirrer 8 inside the tank through the principle of electromagnetic induction. There is no need to penetrate the mechanical shaft of the tank, eliminating the risk of leakage from rotating parts at the source. Both the main and auxiliary stirrers adopt a double-helix reverse structure, and form a reverse rotation trajectory when running synchronously: the main stirrer and auxiliary stirrer work together to break the limitation of liquid flow in single stirring, and build a three-dimensional turbulent flow field inside the tank. By enhancing the shear stress between liquids, the diffusion and mixing of various components of the electrolyte are accelerated, and the time required for uniform stirring is greatly shortened; at the same time, the three-dimensional liquid flow ensures that there are no dead zones in the tank, improving the uniformity of electrolyte mixing and batch consistency.

[0038] (3) Material flow under full-process sealing protection

[0039] The entire preparation process is kept completely sealed: After feeding, the feed flange 1 is closed by bolt tightening and fluororubber ring sealing; during stirring, the sealing structure of the tank body 7, top end cap 5, and each flange continuously prevents the exchange of substances between the inside and outside, maintaining stable pressure inside the tank and ensuring that the electrolyte components are not lost or contaminated. After preparation, the electrolyte is discharged through the discharge flange 12 (bolt + fluororubber ring sealing structure). The sealing structure remains effective during the discharge process, ensuring that there is no leakage of harmful components or intrusion of impurities throughout the process, ultimately achieving efficient, safe, and stable sealed electrolyte preparation.

[0040] The above description provides a further detailed explanation of this utility model, but it should not be construed as limiting the scope of the utility model to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this utility model, and all such modifications or substitutions should be considered to fall within the patent protection scope defined by the submitted claims.

Claims

1. A fully sealed electrolyte stirring device for lithium primary batteries, characterized in that, It includes a feed flange, sight glass, pressure gauge, top end cap, tank body flange, tank body, main stirring device, auxiliary stirring device, and discharge flange; the main stirring device consists of a main agitator and a main motor, and the auxiliary stirring device consists of an auxiliary agitator and an auxiliary motor; the feed flange is located on the top end cap; The discharge flange is located below the tank body; The sight glass is located on the top end cap; the pressure gauge is located on the top end cap and connected to the top end cap; the tank body flange is connected to the tank body, and the tank body flange is bolted to the top end cap; the main stirring device and the auxiliary stirring device are located at the bottom of the tank body.

2. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The sight glass is made of heat-resistant glass.

3. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The tank body and the top end cap are made of stainless steel, and the sealed assembly has a certain pressure resistance.

4. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, A PTFE gasket or fluororubber ring is added between the main flange and the top end cap of the tank to enhance the sealing performance.

5. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The main stirring device consists of the main motor and electromagnetic drive outside the lithium primary battery fully sealed electrolyte stirring device, and the main stirrer inside the lithium primary battery fully sealed electrolyte stirring device provides rotational torque through electromagnetic induction.

6. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The auxiliary stirring device consists of an auxiliary motor and electromagnetic drive outside the fully sealed electrolyte stirring device for lithium primary batteries, which provides rotational torque through electromagnetic induction with the auxiliary stirrer inside the fully sealed electrolyte stirring device for lithium primary batteries.

7. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The main stirring device and the auxiliary stirring device use a double-helix reverse configuration.

8. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The main stirring device and the auxiliary stirring device together form a three-dimensional stirring liquid flow.

9. The lithium primary battery fully sealed electrolyte stirring device according to claim 1, characterized in that, The feed flange, the tank body flange, and the discharge flange are connected by bolts, with a fluororubber ring added in between to enhance sealing.

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