Lithium battery coating constant-temperature feeding device

Abstract

The utility model relates to a lithium battery coating constant-temperature feeding device, and belongs to the technical field of lithium battery production equipment. The electromagnetic coil is arranged on the outer wall of the feeding tank, so that the feeding tank can be rapidly heated, heat can be transferred to slurry, energy loss is low, heating efficiency is high, heating power is accurately adjusted by controlling the magnitude and frequency of current, accurate control over temperature is achieved, meanwhile, the stirring mechanism is matched to stir the slurry to enable the slurry to form circulation, and the stirring efficiency is improved. The slurry can be prevented from layering or precipitating in the tank, heat transfer and mixing in the slurry are promoted, the temperature distribution is more uniform, and the coating quality of the lithium battery is ensured.

Description

A lithium battery coating constant temperature feeding device Technical Field

[0001] This utility model belongs to the technical field of lithium battery production equipment, specifically relating to a lithium battery coating constant temperature feeding device. Background Technology

[0002] With the continuous development of lithium-ion battery technology, the requirements for its performance and quality are becoming increasingly stringent. Among these requirements, the coating process is one of the key steps in lithium-ion battery production, directly impacting the battery's performance and quality. During the coating process, temperature control of the slurry is crucial. Uneven temperature distribution in the slurry can alter its viscosity and flowability, thus affecting the quality of the lithium battery coating.

[0003] Currently, commonly used lithium battery coating feeding devices typically employ traditional heating methods such as resistance wire heating or steam heating. These heating methods suffer from problems such as low heating efficiency, large energy loss, and poor temperature control accuracy, making it difficult to meet the requirements of high-precision coating processes. Furthermore, since the slurry is in a static state within the feeding tank, it is prone to stratification or sedimentation, resulting in poor temperature uniformity and stability of the slurry, which further affects the quality of lithium battery coating. Summary of the Invention

[0004] To overcome the problems in the prior art, this utility model provides a constant temperature feeding device for lithium battery coating. By setting an electromagnetic coil on the outer wall of the feeding tank, the feeding tank can be heated quickly and the heat can be transferred to the slurry with little energy loss and high heating efficiency. The heating power can be precisely adjusted by controlling the current magnitude and frequency to achieve precise temperature control. At the same time, the stirring mechanism agitates the slurry to form a circulation, which can prevent the slurry from stratifying or settling in the tank and promote heat transfer and mixing inside the slurry, making the temperature distribution more uniform, thereby ensuring the quality of lithium battery coating.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A lithium battery coating constant temperature feeding device mainly includes a support, a feeding tank, a sealing cover, a motor, a stirring mechanism, an electromagnetic coil, a heat insulation sleeve, a controller, a temperature sensor, and a support cylinder. The outer wall of the feeding tank is provided with a heat insulation sleeve, forming a cavity sandwich between the heat insulation sleeve and the feeding tank. An electromagnetic coil is arranged around the outer wall of the feeding tank within the cavity sandwich. A temperature sensor for monitoring the slurry temperature is installed inside the feeding tank. The sealing cover is fastened to the top of the feeding tank by fasteners. A support cylinder is provided at the center of the sealing cover. The stirring mechanism is installed on the support cylinder and located inside the feeding tank. The motor is installed on the sealing cover and is connected to the stirring mechanism for transmission. The stirring mechanism includes a stirring shaft, a turntable, and baffle blades. The top of the stirring shaft is installed on the support cylinder through a bearing and is connected to the motor for transmission. A conical turntable is installed at the bottom. Baffle blades are evenly arranged along the circumference of the turntable. The controller is installed on the outer wall of the heat insulation sleeve. The temperature sensor and the motor are both connected to the controller by wires.

[0006] The inner wall of the feeding tank is uniformly provided with baffles along the circumferential direction.

[0007] Heating rods electrically connected to the controller are evenly installed along the circumferential direction at the bottom of the support cylinder.

[0008] The feed tank has an inlet at the top and an outlet at the bottom. A delivery pump for conveying the slurry to the coating machine is connected to the outlet, and the delivery pump is electrically connected to the controller.

[0009] Both the insulation sleeve and the sealing cap are made of heat-insulating material, and the inside of the insulation sleeve is filled with a polyurethane foam layer to improve the heat insulation performance.

[0010] A pressure relief valve is installed on the top of the sealing cover.

[0011] A rubber sealing ring is provided between the sealing cap and the top of the feeding tank.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes an electromagnetic coil installed on the outer wall of the feeding tank to rapidly heat the tank and transfer heat to the slurry, resulting in minimal energy loss and high heating efficiency. The heating power is precisely adjusted by controlling the current magnitude and frequency, achieving accurate temperature control. Simultaneously, a stirring mechanism agitates the slurry, creating circulation and preventing stratification or sedimentation within the tank. This also promotes heat transfer and mixing within the slurry, resulting in a more uniform temperature distribution and ensuring the quality of lithium battery coating. Attached Figure Description

[0014] Figure 1 is a three-dimensional schematic diagram of this utility model.

[0015] Figure 2 is a three-dimensional schematic diagram of the internal structure of this utility model.

[0016] Figure 3 is a schematic diagram of the three-dimensional structure of the stirring mechanism.

[0017] Figure 4 is a cross-sectional view of the stirring mechanism. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] This utility model discloses a constant-temperature feeding device for lithium battery coating. The device mainly includes a support 1, a feeding tank 2, a sealing cover 3, a motor 4, a stirring mechanism 5, an electromagnetic coil 6, a heat insulation sleeve 7, a controller 8, a temperature sensor 9, and a support cylinder 11. The outer wall of the feeding tank 2 is provided with a heat insulation sleeve 7, forming a cavity between the heat insulation sleeve 7 and the feeding tank 2. An electromagnetic coil 6 is arranged around the outer wall of the feeding tank 2 within the cavity. A temperature sensor 9 for monitoring the slurry temperature is installed inside the feeding tank 2. The sealing cover 3 is fastened to the top of the feeding tank 2 with fasteners, sealing the surface. A support cylinder 11 is provided at the center of the cover 3. The stirring mechanism 5 is installed on the support cylinder 11 and located inside the feeding tank 2. The motor 4 is installed on the sealing cover 3 and is connected to the stirring mechanism 5 for transmission. The stirring mechanism 5 includes a stirring shaft 501, a turntable 502, and baffle blades 503. The top end of the stirring shaft 501 is installed on the support cylinder 11 through a bearing and is connected to the motor 4 for transmission. The bottom end is equipped with a conical turntable 502. Baffle blades 503 are evenly arranged on the turntable 502 along the circumferential direction. The controller 8 is installed on the outer wall of the insulation sleeve 7. The temperature sensor 9 and the motor 4 are both connected to the controller 8 by wires.

[0020] First, the slurry to be heated is injected into the feeding tank 2. Then, the electromagnetic coil 6 is activated by the controller 8. After the electromagnetic coil 6 is energized, it generates an alternating magnetic field on the outer wall of the feeding tank 2. The alternating magnetic field generates eddy currents within the wall, causing the feeding tank 2 to heat up rapidly. The heat is transferred to the slurry through the inner wall of the feeding tank 2, thus heating the slurry. Simultaneously, the temperature sensor 9 monitors the temperature of the slurry in real time and transmits the temperature signal to the controller 8. The controller 8 adjusts the current magnitude and frequency of the electromagnetic coil 6 based on the difference between the preset temperature value and the actual temperature value to precisely control the heating power, thereby achieving precise control of the slurry temperature. During the heating process, the motor 4 drives the stirring mechanism 5 to rotate. The stirring shaft 501 further drives the turntable 502 and the turbulence blades 503 to rotate, stirring the slurry and creating a circulating flow. This prevents the slurry from stratifying or settling within the tank and promotes heat transfer and mixing within the slurry, resulting in a more uniform temperature distribution. Finally, the heated slurry is supplied to the coating equipment through the outlet at the bottom of the feeding tank 2 for the coating process. This invention utilizes the combined action of electromagnetic induction heating and a stirring mechanism to rapidly and uniformly heat the slurry and achieve precise temperature control, thereby ensuring the quality of lithium battery coating.

[0021] The inner wall of the feeding tank 2 is uniformly provided with baffles 203 along the circumferential direction; the baffles 203 can change the flow direction and speed of the slurry, increase the turbulence of the slurry, and help to distribute heat more evenly throughout the slurry.

[0022] Heating rods 10, which are electrically connected to the controller 8, are evenly installed along the circumferential direction at the bottom of the support cylinder 11. If the temperature of the slurry fluctuates during the heating process, the heating rods 10 can be used to compensate for the temperature fluctuation. The heating can be started or stopped according to the instructions of the controller 8 to maintain the temperature stability of the slurry. At the same time, the heat can be transferred to the slurry more evenly, thereby improving the uniformity of heating.

[0023] The feed tank 2 is provided with a feed inlet 201 at the top and a discharge outlet 202 at the bottom. A conveying pump for conveying the slurry to the coating machine is connected to the discharge outlet 202, and the conveying pump is electrically connected to the controller 8. The speed and flow rate of the conveying pump are adjusted by the controller 8 to adjust the slurry supply in real time, so as to ensure the uniformity and stability of the coating.

[0024] The insulation sleeve 7 is made of heat insulation material, and the inside of the insulation sleeve 7 is filled with a polyurethane foam layer to improve the heat insulation performance; the polyurethane foam layer has good heat insulation performance, which can effectively reduce heat loss and keep the temperature of the slurry in the feed tank 2 stable.

[0025] The sealing cover 3 is equipped with a pressure relief valve 12 on its top; this ensures that pressure is released in a timely manner when the pressure is too high, preventing equipment damage or personal injury.

[0026] A rubber sealing ring is provided between the sealing cap 3 and the top of the feeding tank 2; it can provide good sealing performance, reduce heat loss, and help maintain the temperature of the slurry in the feeding tank 2.

[0027] Work process:

[0028] First, the slurry to be heated is injected into the feeding tank 2 through the inlet 201. Then, the controller 8 activates the electromagnetic coil 6. After the electromagnetic coil 6 is energized, it generates an alternating magnetic field on the outer wall of the feeding tank 2. The alternating magnetic field generates eddy currents within the wall, causing the feeding tank 2 to heat up rapidly. The heat is transferred to the slurry through the inner wall of the feeding tank 2, thus heating the slurry. Simultaneously, the temperature sensor 9 monitors the temperature of the slurry in real time and transmits the temperature signal to the controller 8. The controller 8 adjusts the current magnitude and frequency of the electromagnetic coil 6 based on the difference between the preset temperature value and the actual temperature value to precisely control the heating power, thereby achieving precise control of the slurry temperature. During the heating process, the motor 4 drives the stirring mechanism 5 to rotate. The stirring shaft 501 further drives the turntable 502 and the turbulence blades 503 to rotate, stirring the slurry and creating a circulating flow. This prevents the slurry from stratifying or settling within the tank and promotes heat transfer and mixing within the slurry, resulting in a more uniform temperature distribution. Finally, the heated slurry is supplied to the coating equipment via a delivery pump for the coating process. This invention utilizes the combined action of electromagnetic induction heating and a stirring mechanism to rapidly and uniformly heat the slurry and achieve precise temperature control, thereby ensuring the quality of lithium battery coating.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A constant-temperature feeding device for lithium battery coating, characterized in that: The lithium battery coating constant temperature feeding device includes a bracket (1), a feeding tank (2), a sealing cover (3), a motor (4), a stirring mechanism (5), an electromagnetic coil (6), a heat insulation sleeve (7), a controller (8), a temperature sensor (9), and a support cylinder (11). The outer wall of the feeding tank (2) is provided with a heat insulation sleeve (7), and a cavity sandwich is formed between the heat insulation sleeve (7) and the feeding tank (2). An electromagnetic coil (6) is arranged around the outer wall of the feeding tank (2) in the cavity sandwich. A temperature sensor (9) for monitoring the temperature of the slurry is installed in the feeding tank (2). The sealing cover (3) is fastened to the top of the feeding tank (2) by fasteners. A support cylinder (11) is provided at the center of the sealing cover (3). 1) The stirring mechanism (5) is installed on the support cylinder (11) and located inside the feed tank (2). The motor (4) is installed on the sealing cover (3) and is connected to the stirring mechanism (5) for transmission. The stirring mechanism (5) includes a stirring shaft (501), a turntable (502), and a turbulence blade (503). The top end of the stirring shaft (501) is installed on the support cylinder (11) through a bearing and is connected to the motor (4) for transmission. The bottom end is equipped with a turntable (502) with a conical structure. Turbulence blades (503) are evenly arranged on the turntable (502) along the circumferential direction. The controller (8) is installed on the outer wall of the insulation sleeve (7). The temperature sensor (9) and the motor (4) are both connected to the controller (8) by wires.

2. The lithium battery coating constant temperature feeding device as described in claim 1, characterized in that: The inner wall of the feeding tank (2) is uniformly provided with baffles (203) along the circumferential direction.

3. A lithium battery coating constant temperature feeding device as described in claim 1 or 2, characterized in that: Heating rods (10) electrically connected to the controller (8) are evenly installed at the bottom of the support cylinder (11) along the circumferential direction.

4. The lithium battery coating constant temperature feeding device as described in claim 1, characterized in that: The feed tank (2) is provided with a feed inlet (201) at the top and a discharge outlet (202) at the bottom. A conveying pump for conveying slurry to the coating machine is connected to the discharge outlet (202), and the conveying pump is electrically connected to the controller (8).

5. The lithium battery coating constant temperature feeding device as described in claim 1, characterized in that: The insulation sleeve (7) and the sealing cap (3) are both made of heat insulation material, and the insulation sleeve (7) is filled with a polyurethane foam layer to improve the heat insulation performance.

6. The lithium battery coating constant temperature feeding device as described in claim 1, characterized in that: The sealing cap (3) is equipped with a pressure relief valve (12) on top.

7. The lithium battery coating constant temperature feeding device as described in claim 1, characterized in that: A rubber sealing ring is provided between the sealing cap (3) and the top of the feeding tank (2).

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