CN219210533U

CN219210533U - Baking mechanism for coating equipment

Info

Publication number: CN219210533U
Application number: CN202223329992.1U
Authority: CN
Inventors: 张辉勇; 王易玮; 覃关键; 陈林青
Original assignee: Huiyang Century New Energy Technology Co ltd
Current assignee: Huiyang Century New Energy Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-06-20
Anticipated expiration: 2032-12-13

Abstract

The utility model relates to the field of coating devices, in particular to a baking mechanism for coating equipment, which comprises a transmission mechanism for conveying pole pieces, a drying mechanism arranged corresponding to the transmission mechanism and at least one heating mechanism arranged at the input end of the transmission mechanism, wherein the heating mechanism comprises a preheating device and a constant temperature device arranged in parallel with the preheating device. According to the utility model, the heating mechanism is used for preheating and then heating the pole piece, so that the temperature of the pole piece is above 100 ℃, NMP or water in the pole piece is rapidly evaporated, an air passage penetrating the inside and the outside is formed, the pole piece is used as an ion channel, the rapid embedding and the extraction of ions of the pole piece are ensured, the ions can be migrated to the bottom layer under the condition of thicker pole piece by the ion channel, and the thickness of the pole piece can be effectively improved, so that the performance is improved.

Description

Baking mechanism for coating equipment

Technical Field

The utility model relates to the field of coating devices, in particular to a baking mechanism for coating equipment.

Background

The existing baking mechanism for coating equipment only carries out drying treatment on the pole piece, for example, a temperature adjusting device of a coating machine oven and a coating machine oven (CN 207222279U) disclose a scheme: including air-supply line, air-out pipe and oven cavity, the one end of air-supply line is provided with upper wind gap and lower wind gap, upper wind gap with lower wind gap set up in the oven cavity, and upper wind gap with lower wind gap sets up relatively from top to bottom and forms a stoving district that is used for stoving coating, the other end of air-supply line is the air intake and is provided with a first fan that can realize positive reversal and is used for heating the heating package of air inlet, the one end of air-out pipe connect in the oven cavity, the other end of air-out pipe is the air outlet and is provided with a second fan that can realize positive reversal.

The problem that the pole piece cracks caused by too fast temperature rise in the cavity of the oven due to the fact that the coater stops working can be solved, but the performance and the thickness of the pole piece are not favorably influenced.

Disclosure of Invention

The utility model aims at: aiming at the defects of the prior art, the baking mechanism for the coating equipment is provided, and can effectively improve the thickness of the pole piece and further improve the performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a baking mechanism for coating equipment, includes the transport mechanism that is used for carrying the pole piece, corresponds the stoving mechanism that transport mechanism set up and set up in at least one heating mechanism of transport mechanism input, heating mechanism include preheating device and with preheating device parallel arrangement's constant temperature equipment.

As an improvement of the baking mechanism for the coating equipment, the baking mechanism comprises an oven and a plurality of hot air blowing heads which are communicated with the oven and are arranged side by side.

As an improvement of the baking mechanism for the coating equipment, an opening of the hot air blowing head is provided with an equipartition net.

As an improvement of the baking mechanism for the coating equipment, the number of the heating mechanisms is smaller than that of the hot air blowing heads, the heating mechanisms and the hot air blowing heads are arranged in parallel corresponding to pole pieces to be baked, the heating mechanisms heat the back of the pole pieces to be baked, and the hot air blowing heads are positioned above the pole pieces to be baked for baking.

As an improvement of the baking mechanism for the coating equipment, the conveying mechanism comprises a bracket and a plurality of rollers with equal interval distances, wherein the rollers are arranged on the bracket in a rolling way.

As an improvement of the baking mechanism for the coating equipment, the number of the rollers is equivalent to that of the hot air blowing heads.

As an improvement of the baking mechanism for coating equipment of the present utility model, the preheating device is located at the front end of the constant temperature device in the conveying direction of the conveying mechanism, and the preheating device and the constant temperature device are adjacently arranged at both sides of one roller.

As an improvement of the baking mechanism for coating equipment of the present utility model, the number of the heating mechanisms is two, and the two heating mechanisms are sequentially arranged on the bracket in the conveying direction of the conveying mechanism.

As an improvement of the baking mechanism for coating equipment of the present utility model, in the conveying direction of the conveying mechanism, the last heating mechanism is arranged at a position not exceeding one third of the support, and the length of the support 11 is equivalent to the distance from the first hot air blowing head 22 to the last hot air blowing head 22, i.e. the position of the last heating mechanism is arranged at a position not exceeding one third of the total number of hot air blowing heads.

As an improvement of the baking mechanism for the coating equipment, the utility model further comprises a controller, wherein the transmission mechanism, the drying mechanism and the heating mechanism are electrically connected with the controller.

The utility model has the beneficial effects that: the pole piece conveying device comprises a conveying mechanism for conveying pole pieces, a drying mechanism arranged corresponding to the conveying mechanism and at least one heating mechanism arranged at the input end of the conveying mechanism, wherein the heating mechanism comprises a preheating device and a constant temperature device arranged in parallel with the preheating device. According to the utility model, the heating mechanism is used for preheating and then heating the pole piece, so that the temperature of the pole piece is above 100 ℃, NMP or water in the pole piece is rapidly evaporated, an air passage penetrating the inside and the outside is formed, the pole piece is used as an ion channel, the rapid embedding and the extraction of ions of the pole piece are ensured, the ions can be migrated to the bottom layer under the condition of thicker pole piece by the ion channel, and the thickness of the pole piece can be effectively improved, so that the performance is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

1-a transmission mechanism; 11-a bracket; 12-roll shaft

2-a drying mechanism; 21-an oven; 22-hot air blowing head;

3-a heating mechanism; 31-a preheating device; 32-a constant temperature device;

4-a controller; 41-a heating controller;

5-a shell.

Detailed Description

As shown in fig. 1, a baking mechanism for a coating apparatus includes a conveying mechanism 1 for conveying a pole piece, a drying mechanism 2 provided corresponding to the conveying mechanism 1, and at least one heating mechanism 3 provided at an input end of the conveying mechanism 1, the heating mechanism 3 including a preheating device 31 and a constant temperature device 32 provided in parallel with the preheating device 31. If only the thermostat 32 is provided for heating, the power of the single heat source needs to be very high, while the direct temperature rises too fast, and the internal mass distribution for pole piece solidification is also poor.

Preferably, the drying mechanism 2 comprises an oven 21 and a plurality of hot air blowing heads 22 which are communicated with the oven 21 and are arranged side by side. The hot air blowing head 22 is used for blowing hot air, and in this embodiment, the temperature of the hot air is 80-140 ℃, and the temperature of the hot air can be changed according to the thickness of the slurry and the coating speed.

Preferably, an equipartition net (not shown) is arranged at the opening of the hot air blowing head 22, and the equipartition net can make the hot air blown by the hot air blowing head 22 uniform, so as to prevent the pole piece to be baked from cracking due to uneven heating.

Preferably, the number of the heating mechanisms 3 is smaller than that of the hot air blowing heads 22, the heating mechanisms 3 and the hot air blowing heads 22 are arranged in parallel corresponding to the pole pieces to be baked, the back of each pole piece is heated by the heating mechanisms 3, the temperature of the back of each pole piece is higher than the evaporation temperature of NMP or water, NMP or water evaporates from the inside to form a steam channel, the steam channel can be used as a subsequent ion channel, and ions can be migrated to the bottom layer under the condition that the pole pieces are thicker by the ion channel, so that the electric performance is ensured. The hot air blowing head 22 is provided corresponding to the transfer mechanism 1.

Preferably, the transmission mechanism 1 comprises a bracket 11 and a plurality of roll shafts 12 which are arranged on the bracket 11 in a rolling manner and have equal interval distances, and the arrangement can prevent the pole pieces from being bent to influence the drying effect due to unequal distances between the roll shafts 12 in the transmission process.

Preferably, the number of the roller shafts 12 is equal to that of the hot air blowing heads 22, so that the pole pieces can be heated uniformly.

Preferably, the preheating device 31 is located at the front end of the constant temperature device 32 in the conveying direction of the conveying mechanism 1, the preheating device 31 and the constant temperature device 32 are adjacently arranged at two sides of one roller shaft 12, the number of the heating mechanisms 3 is two, the two heating mechanisms 3 are sequentially arranged on the support 11 in the conveying direction of the conveying mechanism 1, the position of the last heating mechanism 3 in the conveying direction of the conveying mechanism 1 is not more than one third of the position of the support 11, the length of the support 11 is equivalent to the distance from the first hot air blowing head 22 to the last hot air blowing head 22, namely, the position of the last heating mechanism 3 is not more than one third of the position of the total number of hot air blowing heads 22, if the position of the heating mechanism 3 exceeds the position, the effect of quickly heating the pole pieces cannot be achieved, namely, an ion channel cannot be formed inside the pole pieces.

Preferably, the embodiment further comprises a controller 4, and the transmission mechanism 1, the drying mechanism 2 and the heating mechanism 3 are electrically connected with the controller 4. In order to better control the temperature and power of the heating mechanism 3, the present embodiment further provides a heating controller 41 for controlling the temperature of the heating mechanism 3, the heating mechanism 3 in this embodiment uses a laser head, and the heating controller controls the switching and heating power of the heating mechanism 3 to ensure that the heating mechanism 3 operates at a suitable operating temperature, and the heating power is changed according to the change of the coating speed, which is not specifically set herein.

The utility model also comprises a shell 5, wherein the transmission mechanism 1, the drying mechanism 2, the heating mechanism 3, the controller 4 and the heating controller 41 are all positioned inside the shell 5 to form a closed drying environment.

The working principle of the utility model is as follows: the pole piece that needs to dry is through the transmission entering arrangement of transport mechanism 1, preheats the back through preheating device 31, and rethread constant temperature equipment 32 heats, and heating mechanism 3 heats the back of pole piece, can make the inside ion channel that forms of pole piece, transport mechanism 1 top has drying device 2, and after the hot-blast pole piece that needs to dry of drying device 2 blow off was dried, the pole piece that will accord with the product standard was transported out this device through transport mechanism 1, and the pole piece that handles through this technology can effectively improve thickness and performance better.

To verify the effect of the heating mechanism 3, the following experiments were performed by setting the comparative example and the example:

the battery is a 50Ah lithium iron phosphate battery with the size of 40 mm and the size of 150 mm, the battery system is the same as the manufacturing process, the negative electrode plate is designed according to the positive electrode plate, the experimental group is a baking mechanism for coating equipment provided with a heating mechanism, and the comparison group is not provided with the heating mechanism.

The above batteries were tested for performance.

TABLE 1

As shown in table 1, the rate performance and cycle performance of the battery heated by the heating mechanism were higher than those of the battery not provided with the heating mechanism under the same conditions, and the discharge temperature rise was also reduced. The experiment proves that the utility model improves the baking mechanism for the coating equipment, namely, the heating mechanism is added to improve the thickness of the pole piece to improve the battery performance.

While the foregoing description illustrates and describes several preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. A baking mechanism for coating equipment, characterized in that: the pole piece conveying device comprises a conveying mechanism (1) for conveying pole pieces, a drying mechanism (2) arranged corresponding to the conveying mechanism (1) and at least one heating mechanism (3) arranged at the input end of the conveying mechanism (1), wherein the heating mechanism (3) comprises a preheating device (31) and a constant temperature device (32) arranged in parallel with the preheating device (31).

2. A baking mechanism for a coating apparatus according to claim 1, wherein: the drying mechanism (2) comprises an oven (21) and a plurality of hot air blowing heads (22) which are communicated with the oven (21) and are arranged side by side.

3. A baking mechanism for a coating apparatus according to claim 2, wherein: an opening of the hot air blowing head (22) is provided with an equipartition net.

4. A baking mechanism for a coating apparatus according to claim 2, wherein: the number of the heating mechanisms (3) is smaller than that of the hot air blowing heads (22), and the heating mechanisms (3) and the hot air blowing heads (22) are arranged in parallel corresponding to pole pieces to be baked.

5. A baking mechanism for a coating apparatus according to claim 2, wherein: the conveying mechanism (1) comprises a support (11) and a plurality of roll shafts (12) which are arranged on the support (11) in a rolling mode and have equal interval distances.

6. The baking mechanism for a coating apparatus according to claim 5, wherein: the number of the roll shafts (12) is equal to that of the hot air blowing heads (22).

7. The baking mechanism for a coating apparatus according to claim 5, wherein: the preheating device (31) is positioned at the front end of the constant temperature device (32) in the conveying direction of the conveying mechanism (1), and the preheating device (31) and the constant temperature device (32) are adjacently arranged on two sides of one roller shaft (12).

8. The baking mechanism for a coating apparatus according to claim 5, wherein: the number of the heating mechanisms (3) is two, and the two heating mechanisms (3) are sequentially arranged on the support (11) in the conveying direction of the conveying mechanism (1).

9. The baking mechanism for a coating apparatus according to claim 8, wherein: in the conveying direction of the conveying mechanism (1), the last heating mechanism (3) is arranged at a position not exceeding one third of the support (11).

10. A baking mechanism for a coating apparatus according to claim 1, wherein: the drying device further comprises a controller (4), and the transmission mechanism (1), the drying mechanism (2) and the heating mechanism (3) are electrically connected with the controller (4).