Slurry constant temperature device and lithium ion battery coating system

Abstract

The utility model discloses a slurry constant-temperature device and a lithium ion battery coating system. The slurry constant-temperature device comprises a constant-temperature box, a temperature adjusting box and a temperature control assembly, wherein a slurry pipe and a temperature monitor are arranged in the constant-temperature box; the interior of the temperature adjusting box is divided into a solution cavity and a heat dissipation cavity through a partition plate, and the solution cavity is filled with a heat transfer medium. The temperature control assembly comprises a heating rod and a heat dissipation unit, the heating rod is arranged in the solution cavity, and the heat dissipation unit is partially arranged in the heat dissipation cavity; wherein the constant-temperature box is in circulating connection with a solution cavity of the temperature adjusting box through an infusion pump, and the temperature monitor is electrically connected with the temperature control assembly. According to the slurry constant temperature device and the lithium ion battery coating system, the temperature monitor is arranged around the slurry pipe nearby, so that the temperature of a heat transfer medium in contact with the slurry pipe can be directly monitored, and the temperature monitoring is more accurate; the heat dissipation design enables the heat transfer medium to be rapidly cooled, the cooling efficiency is improved, and the temperature control adjustment of the device is more flexible and efficient.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing technology, and in particular to a slurry constant temperature device and a lithium-ion battery coating system. Background Technology

[0002] Coating is an important step in the lithium-ion battery manufacturing process. Its stability and consistency play an extremely important role in the performance of the battery. When the slurry is transferred from the mixing process to the coating process, the change in ambient temperature will cause the slurry viscosity to fluctuate more, which will have a great impact on the consistency of the coating.

[0003] Chinese patent CN209438451U discloses a constant temperature device for lithium-ion battery coating slurry. Its temperature control is mainly achieved by switching the heating device on and off. However, due to the closed internal structure, when the temperature is too high, after turning off the heating device, it is still necessary to wait for the heat transfer medium to cool down naturally, resulting in poor cooling effect. In addition, the temperature sensor that senses the temperature is located inside the constant temperature heating device, and its temperature cannot directly reflect the temperature inside the constant temperature heat transfer device. This can easily lead to a certain error between the solution temperature in contact with the slurry pipe and the solution temperature inside the constant temperature heating device, affecting the heating and heat preservation effect and quality.

[0004] Therefore, it is necessary to design a better temperature control device for lithium-ion battery coating slurry to meet production needs. Utility Model Content

[0005] The purpose of this invention is to provide a slurry constant temperature device and a lithium-ion battery coating system to solve the problems of slow cooling of the heat transfer medium and errors in the temperature monitored by the temperature sensor and the heating temperature of the slurry tube in traditional coating slurry constant temperature devices.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A slurry temperature control device, comprising:

[0008] A constant temperature chamber, which is equipped with a slurry pipe and a temperature monitor;

[0009] A temperature control chamber, which is divided into a solution chamber and a heat dissipation chamber by a partition, wherein the solution chamber is filled with a heat transfer medium;

[0010] A temperature control component includes a heating rod and a heat dissipation unit, wherein the heating rod is disposed within the solution chamber and the heat dissipation unit is partially disposed within the heat dissipation chamber;

[0011] The constant temperature chamber and the solution chamber of the temperature regulating chamber are kept in a circulating connection through an infusion pump, and the temperature monitor is electrically connected to the temperature control component.

[0012] In some embodiments, the temperature monitor is located inside the thermostatic chamber on the side near the slurry pipe.

[0013] In some embodiments, the heat dissipation cavity is provided with a first air vent and a second air vent;

[0014] The heat dissipation unit includes several heat-conducting plates, which are suspended in the heat dissipation cavity and partially extend through the partition into the solution cavity.

[0015] In some embodiments, the heat dissipation unit further includes a heat dissipation fan, which is located outside the temperature control box and communicates with the first air vent or the second air vent.

[0016] In some embodiments, a portion of the heat-conducting sheet suspended in the heat dissipation cavity has a corrugated structure.

[0017] In some embodiments, a liquid stirrer is provided inside the solution chamber.

[0018] In some embodiments, each end of the slurry pipe is connected to a connector, which is located on the outside of the constant temperature chamber.

[0019] In some embodiments, the slurry tubes are arranged in a serpentine pattern within the constant temperature chamber.

[0020] In some embodiments, a connecting pipe is also included, the connecting pipe comprising a first pipe, a second pipe, and a third pipe;

[0021] The front side of the constant temperature chamber and the front side of the temperature regulating chamber are each connected to the infusion pump through a first pipe and a second pipe, respectively, and the rear side of the constant temperature chamber is connected to the rear side of the temperature regulating chamber through a third pipe.

[0022] A lithium-ion battery coating system includes the aforementioned slurry temperature control device.

[0023] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0024] 1. Temperature monitors are placed near the slurry pipe, which can directly monitor the temperature of the heat transfer medium in contact with the slurry pipe, ensuring more accurate temperature monitoring.

[0025] 2. The heat dissipation design enables the heat transfer medium to cool down quickly, improving its cooling efficiency and making the temperature control of the device more flexible and efficient. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the slurry constant temperature device of this utility model from a frontal view.

[0027] Figure 2This is a schematic diagram of the slurry constant temperature device of this utility model from a rear view.

[0028] Figure 3 This is a schematic diagram of the internal structure of the incubator.

[0029] Figure 4 This is a partial exploded structural diagram of the temperature control chamber.

[0030] Figure 5 This is a schematic diagram of the internal structure of the temperature control chamber.

[0031] In the diagram: 1. Constant temperature chamber; 2. Temperature control chamber; 21. Solution chamber; 22. Heat dissipation chamber; 23. First air vent; 24. Second air vent; 3. Temperature control component; 31. Heating rod; 32. Heat dissipation unit; 321. Heat-conducting plate; 322. Heat dissipation fan; 4. Slurry pipe; 5. Temperature monitor; 6. Partition; 7. Infusion pump; 8. Liquid stirrer; 9. Connector; 10. Connecting pipe; 101. First pipe; 102. Second pipe; 103. Third pipe. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0034] This utility model discloses a slurry temperature control device for maintaining the temperature of lithium-ion battery coating slurry to improve subsequent coating processes. It is understood that this device can also be used for temperature control of other liquids or gases besides lithium battery coating slurry; this is not a limitation.

[0035] See Figures 1 to 5 As shown, the slurry temperature control device includes a temperature control chamber 1, a temperature regulating chamber 2, and a temperature control component 3.

[0036] Among them, such as Figure 3 As shown, a slurry tube 4 is installed inside the constant temperature chamber 1. The slurry tube 4 is used to heat and maintain the temperature of the slurry to stabilize its viscosity, thereby improving the subsequent coating process. In this application, the slurry tube 4 is preferably distributed in a serpentine pattern to increase the contact area with the heat transfer medium, thereby better heating and maintaining the temperature of the slurry inside the tube.

[0037] In addition, a temperature monitor 5 is installed inside the constant temperature chamber 1. This monitor is used to detect the temperature of the heat transfer medium inside the constant temperature chamber 1, so as to more intuitively and accurately estimate the temperature of the slurry in the slurry pipe 4 and reduce the impact of temperature error on the slurry quality.

[0038] like Figure 1 and Figure 2 As shown, the temperature control chamber 2 is located on one side of the constant temperature chamber 1. In this application, the two are arranged side by side to reduce the volume of the slurry constant temperature device and shorten the slurry flow path. Combined with Figure 5 As shown, the temperature control chamber 2 is divided into a solution chamber 21 and a heat dissipation chamber 22 by a partition 6. The solution chamber 21 is filled with a heat transfer medium and is closer to the constant temperature chamber 1. The solution chamber 21 can be connected to the constant temperature chamber 1 by a liquid pump 7 so that the heat transfer medium can form a thermal cycle.

[0039] like Figure 5 As shown, the temperature control component 3 includes a heating rod 31 and a heat dissipation unit 32. The heating rod 31 is disposed inside the solution chamber 21, such as at its bottom, and is used to heat the heat transfer medium to raise it to the required preset temperature.

[0040] The heat dissipation unit 32 is partially disposed within the heat dissipation cavity 22 to accelerate heat dissipation of the heat transfer medium, improve cooling efficiency, and make temperature control more flexible and efficient. In some examples, the heat dissipation unit 32 includes several heat-conducting plates 321, which are suspended within the heat dissipation cavity 22 and partially extend through the partition 6 into the solution cavity 21. Through the contact between the heat-conducting plates 321 and the heat transfer medium, heat can be quickly transferred to the heat dissipation cavity 22. In addition, the heat dissipation cavity 22 is provided with a first air vent 23 and a second air vent 24 (see...). Figure 4 A cold source (such as air) can enter the heat dissipation cavity 22 through the first air vent 23, absorb heat after contacting the heat-conducting plate 321, and be discharged from the second air vent 24, thereby achieving rapid heat dissipation. Of course, the cold source can also enter and exit from the opposite direction, that is, flow from the second air vent 24 to the first air vent 23; the specific flow direction is not limited. Figure 2 As shown, in a preferred example, the heat dissipation unit 32 further includes a heat dissipation fan 322. The heat dissipation fan 322 is located outside the temperature control box 2 and is connected to the first air outlet 23 or the second air outlet 24. The forced airflow of the heat dissipation fan 322 can accelerate the airflow to enhance the heat exchange efficiency with the heat conduction plate 321, thereby significantly improving the heat dissipation effect and enabling the heat transfer medium to cool down quickly.

[0041] like Figure 1 and Figure 2 As shown, in this slurry temperature control device, the solution chamber 21 of the temperature control chamber 1 and the temperature regulating chamber 2 are kept in a circulating connection via the infusion pump 7, and the temperature monitor 5 is electrically connected to the temperature control component 3. Its working principle is as follows:

[0042] In use, the slurry is fed into the slurry pipe 4, the temperature control component 3 is activated, and the heating rod 31 heats the heat transfer medium in the solution chamber 21 of the temperature control chamber 2. The infusion pump 7 delivers the slurry to the constant temperature chamber 1 via the connecting pipe 10 to keep the slurry warm. During this period, the temperature monitor 5 monitors the temperature of the heat transfer medium in the constant temperature chamber 1 in real time. When the temperature of the heat transfer medium is too low, the heating rod 31 continues to heat the heat transfer medium in the solution chamber 21 and causes it to flow into the constant temperature chamber 1. This cycle continues until the temperature is maintained within the required range. When the temperature of the heat transfer medium is too high, the heating rod 31 is turned off and the cooling fan 322 is turned on. The cooling fan 322 blows air into the cooling chamber 22, where it exchanges heat with the heat-conducting plate 321 and is then discharged, thereby rapidly reducing the temperature of the heat transfer medium until the temperature of the heat transfer medium in the constant temperature chamber 1 is maintained within the required range.

[0043] Compared to traditional constant temperature devices, this application places the temperature monitor 5 close to the slurry pipe 4, enabling it to directly monitor the temperature of the heat transfer medium in contact with the slurry pipe 4. This ensures more accurate temperature monitoring and solves the problem of inaccurate temperature measurement caused by temperature loss during heat transfer, thus better guaranteeing slurry quality to meet the requirements of subsequent coating processes. Furthermore, the heat dissipation design allows the heat transfer medium to cool down rapidly, improving its cooling efficiency and making the temperature control of the device more flexible and efficient.

[0044] See Figure 3 As shown, in a preferred embodiment, the temperature monitor 5 is located inside the constant temperature chamber 1, near the slurry pipe 4. Since the temperature monitor 5 is installed inside the constant temperature chamber 1 and near the slurry pipe 4, it can directly monitor the temperature of the heat transfer medium in contact with the slurry pipe 4, resulting in more accurate monitoring data.

[0045] In some embodiments, a portion of the heat-conducting sheet 321 suspended in the heat dissipation cavity 22 has a corrugated structure (not shown) to further increase the contact area with air and improve heat exchange efficiency. In this application, the heat-conducting sheet 321 is made of a metal sheet with good thermal conductivity, such as copper sheet, aluminum sheet, silver sheet, etc.

[0046] See Figure 4 and Figure 5 As shown, in some embodiments, a liquid stirrer 8 is provided in the solution chamber 21 to stir the heat transfer medium in the solution chamber 21, so that it is heated more evenly and avoids local overheating problems.

[0047] See Figure 1 As shown, in some embodiments, each end of the slurry tube 4 is connected to a connector 9, which is located outside the constant temperature chamber 1 to facilitate connection between the slurry tube 4 and the outside. For example, one connector 9 is connected to a slurry source, and the other connector 9 is connected to a coating device (not shown).

[0048] See Figure 1 and Figure 2 As shown, in some embodiments, the connecting pipe 10 includes a first pipe 101, a second pipe 102, and a third pipe 103. The front side of the constant temperature chamber 1 and the front side of the temperature regulating chamber 2 are respectively connected to the infusion pump 7 through the first pipe 101 and the second pipe 102, and the rear side of the constant temperature chamber 1 is connected to the rear side of the temperature regulating chamber 2 through the third pipe 103.

[0049] Furthermore, this application also discloses a lithium-ion battery coating system, including the aforementioned slurry temperature control device. The lithium-ion battery coating system equipped with this slurry temperature control device can significantly improve coating quality due to the better consistency of the slurry.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A slurry thermostatic device characterized by, include: A constant temperature chamber (1) is provided with a slurry pipe (4) and a temperature monitor (5). The temperature control chamber (2) is divided into a solution chamber (21) and a heat dissipation chamber (22) by a partition (6). The solution chamber (21) is filled with a heat transfer medium. The temperature control component (3) includes a heating rod (31) and a heat dissipation unit (32). The heating rod (31) is disposed in the solution chamber (21), and the heat dissipation unit (32) is partially disposed in the heat dissipation chamber (22). The constant temperature chamber (1) and the solution chamber (21) of the temperature regulating chamber (2) are connected in a loop via an infusion pump (7), and the temperature monitor (5) is electrically connected to the temperature control component (3).

2. The slurry thermostatic device of claim 1, wherein The temperature monitor (5) is located inside the constant temperature chamber (1) on the side near the slurry pipe (4).

3. The slurry thermostatic device of claim 1, wherein The heat dissipation cavity (22) is provided with a first air vent (23) and a second air vent (24); The heat dissipation unit (32) includes a plurality of heat-conducting plates (321), which are suspended in the heat dissipation cavity (22) and partially extend through the partition plate (6) into the solution cavity (21).

4. The slurry thermostatic device of claim 3, wherein The heat dissipation unit (32) also includes a heat dissipation fan (322), which is located outside the temperature control box (2) and is connected to the first air vent (23) or the second air vent (24).

5. The slurry thermostatic device of claim 4, wherein, The portion of the heat-conducting sheet (321) suspended in the heat dissipation cavity (22) has a corrugated structure.

6. The slurry thermostatic device of claim 1, wherein A liquid stirrer (8) is provided inside the solution chamber (21).

7. The slurry thermostatic device of claim 1, wherein The slurry pipe (4) is connected to a connector (9) at each end, and the connector (9) is located on the outside of the constant temperature box (1).

8. The slurry thermostatic device of claim 1, wherein, The slurry pipe (4) is distributed in a serpentine pattern inside the constant temperature chamber (1).

9. The slurry thermostatic device of claim 1, wherein, It also includes a connecting pipe (10), which includes a first pipe (101), a second pipe (102) and a third pipe (103); The front side of the constant temperature chamber (1) and the front side of the temperature regulating chamber (2) are respectively connected to the infusion pump (7) through the first pipe (101) and the second pipe (102), and the rear side of the constant temperature chamber (1) is connected to the rear side of the temperature regulating chamber (2) through the third pipe (103).

10. A lithium ion battery coating system characterized by, Includes the slurry temperature control device as described in any one of claims 1-9.

Images