CN203980811U - A kind of lithium ion battery powder baking oven - Google Patents

Abstract

The utility model discloses a kind of lithium ion battery powder baking oven, comprise powder pallet, pallet cover, sealing ring, expansion link, tracheae, PLC control system, pumped vacuum systems, fill dry gas system etc.Oven interior upper surface is fixed in one end of described expansion link, and one end is connected with pallet cover in addition.Described expansion link is controlled by PLC control system, can realize baking oven pallet and pallet cover closure when vacuumizing and fill dry gas, and baking oven pallet when normal baking is separated with pallet cover.Tracheae is also equipped with on described pallet cover top, for pressure inside and outside balance pallet; Pallet cover bottom is provided with sealing ring.PLC control system integration is controlled pumped vacuum systems, is filled dry gas system and expansion link.The utility model can be realized when powder pallet and pallet cover on ventilation and being kept closed, and reduces the loss in powder bake process, guarantees the accuracy of battery formula.

Description

A lithium ion battery powder oven

technical field

The utility model relates to the field of lithium-ion battery production equipment, in particular to a lithium-ion battery powder oven.

Background technique

In the lithium battery manufacturing process, moisture has a great influence on the battery, so powder baking in the lithium ion battery manufacturing process is an important key link in the lithium battery manufacturing process. When the active material, conductive agent, binder and other powders of lithium-ion batteries are baked, due to the need for vacuuming and drying gas ventilation operations during the baking process, a small amount of powders will overflow the tray or even be vacuumed away. Not only will it cause a waste of materials, but the accuracy of the battery formula is also difficult to guarantee.

Utility model content

The purpose of the utility model is to provide a lithium ion battery powder oven with an automatic control of the baking process and a simple structure in view of the shortcomings of the existing lithium ion battery powder oven.

The utility model is realized through the following technical solutions, including a box body, the box is provided with a powder tray, a tray cover and a telescopic rod; the tray cover is located directly above the powder tray, and the tray cover is in contact with the powder tray A sealing ring is arranged at the place; the tray cover is provided with an air pipe, and the air pipe runs through the upper and lower surfaces of the tray cover; the upper end of the telescopic rod is fixed on the upper wall of the box body, and the lower end is fixedly connected with the upper surface of the tray cover, and It can drive the tray cover to move up and down repeatedly relative to the powder tray inside the box; the box is equipped with a PLC control system, a baking system, a vacuum system and a dry gas filling system. The baking system, Vacuum pumping system, dry gas filling system and telescopic rod are integrated and controlled by PLC control system.

Preferably, the PLC control system is realized by controlling the extension or shortening of the telescopic rod to drive the movement of the tray cover: the powder tray and the tray cover are closed when the oven is vacuumed and filled with dry gas, and the powder tray and the tray cover are closed when the oven is normally baked. Tray cover detached.

Preferably, the number of the telescopic rods is four, and they are respectively located at the four corners of the tray cover.

Preferably, a control panel is provided on the box, and the control panel includes a display screen, a power switch button, a baking button, a vacuum button and a dry gas charging button.

The beneficial effect of the utility model is that the powder tray and the tray cover can be kept in a closed state during ventilation, which reduces the loss caused by ventilation during the powder baking process and ensures the accuracy of the battery formula; the entire baking The process is automatically controlled by PLC system, with simple structure and easy operation.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a powder tray and a tray cover in an embodiment of the present invention;

Fig. 2 is a schematic diagram of the overall structure of the lithium-ion battery powder oven according to the embodiment of the present invention.

Detailed ways

Below, the technical solution of the utility model will be described in detail through specific embodiments in conjunction with the accompanying drawings.

Referring to accompanying drawings 1 and 2 at the same time, a lithium ion battery powder oven includes a box body 1, and a powder material tray 2, a tray cover 3 and a telescopic rod 4 are arranged in the box body 1; Right above the material tray 2, a sealing ring 31 is provided at the contact between the tray cover 3 and the powder tray 2; the tray cover 3 is provided with an air pipe 32, and the air pipe 32 runs through the upper and lower surfaces of the tray cover 3; The upper end of the rod 4 is fixed on the upper wall in the box body 1, and the lower end is fixedly connected with the upper surface of the tray cover 3, and can drive the tray cover 3 to move up and down repeatedly in the box body 1 relative to the powder tray 2; The box body 1 is provided with a PLC control system, a baking system, a vacuum system and a dry gas filling system, and the baking system, vacuum system, dry gas filling system and telescopic rod 4 are integrated and controlled by the PLC control system.

The PLC control system is realized by controlling the extension or shortening of the telescopic rod to drive the movement of the tray cover: the powder tray and the tray cover are closed when the oven is vacuumed and dried, and the powder tray is separated from the tray cover when the oven is baking normally. .

Specifically, the number of the telescopic rods 4 is four, and they are respectively located at the four corners of the tray cover 3, so that the tray cover 3 is evenly stressed when it rises or falls. The box body 1 is provided with a control panel 11. The control panel 11 includes a display screen, a power switch button, a baking button, a vacuum button and a dry gas charging button, and the oven can be manually operated when needed.

During specific implementation, the control process of the PLC control system is as follows: The PLC control system receives the signal to start the automatic baking program, and closes the powder tray 2 and the tray cover 3 by controlling the lifting device; The outer space of the tray 2 is vacuumed, and the vacuuming is stopped when the vacuum degree reaches -0.08MPa; after an interval of 2 minutes, when the internal and external pressure of the powder tray 2 is balanced, the telescopic rod 4 is controlled to drive the tray cover 3 to rise, and the baking system automatically Start to vacuum bake the powder in the powder tray 2; after vacuum baking for 45 minutes, the PLC control system closes the powder tray and the tray cover by controlling the telescopic rod 4, and the dry gas filling system automatically starts to clean the inside of the box. Carry out the process of filling the dry gas; when the vacuum degree inside the box reaches -0.01MPa, stop the inflation; after an interval of 2 minutes, when the internal and external pressure of the powder tray 2 is balanced, the telescopic rod 4 drives the tray cover 3 to rise again, realizing the dry gas and powder The full contact; after the dry gas is kept for 30 minutes, the next baking process is started, and the above control procedure is repeated.

After the baking program is over, the heating is automatically turned off, and the vacuum storage is carried out to cool down. When the material retrieving temperature is reached, the tray cover 3 and the powder tray 2 are closed in manual mode, and the dry gas is filled. When the internal and external pressure of the powder tray 2 is equal and reaches normal pressure , open the oven door, manually raise the tray cover 3, and take out the powder.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (4)

1. a lithium ion battery powder baking oven, comprises casing (1), it is characterized in that, is provided with powder pallet (2), pallet cover (3) and expansion link (4) in described casing (1); Described pallet cover (3) be positioned at powder pallet (2) directly over, pallet cover (3) and powder pallet (2) contact position are provided with sealing ring (31); On described pallet cover (3), be provided with tracheae (32), tracheae (32) is through the upper and lower surface of pallet cover (3); The upper wall in casing (1) is fixed in the upper end of described expansion link (4), and lower end is fixedly connected with pallet cover (3) upper surface, and can drive pallet cover (3) with respect to powder pallet (2), to do upper and lower motion repeatedly in casing (1) inside; On described casing (1), be provided with PLC control system, baking system, pumped vacuum systems and fill dry gas system, described baking system, pumped vacuum systems and fill dry gas system and expansion link (4) is controlled by PLC control system integration.

2. lithium ion battery powder baking oven according to claim 1, it is characterized in that, PLC control system drives the motion of pallet cover (3) to realize by controlling elongating or shortening of expansion link (4): baking oven is powder pallet (2) and pallet cover (3) closure when vacuumizing and fill dry gas, and baking oven powder pallet (2) when normal baking is separated with pallet cover (3).

3. lithium ion battery powder baking oven according to claim 1, is characterized in that, the quantity of described expansion link (4) is 4, and lays respectively at four jiaos of pallet cover (3).

4. according to arbitrary described lithium ion battery powder baking oven in claim 1 ~ 3, it is characterized in that, on described casing (1), be provided with control panel (11), control panel (11) comprises display screen, power switch button, toasts button, vacuumizes button and fills dry gas button.

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