Direct-pasting type high-vacuum baking oven

Abstract

The utility model discloses a direct pasting type high vacuum baking oven which comprises an oven body, a plurality of layers of baking chambers are arranged in the oven body, a unit cavity is arranged in each baking chamber, the back side of each unit cavity is communicated with a vacuumizing and nitrogen injection mechanism, and a plurality of layers of direct pasting type baking tables which are evenly distributed up and down are arranged in each unit cavity. A battery to be baked is placed on the direct-pasting type baking table, and the direct-pasting type baking table comprises an upper bottom plate, a lower bottom plate and an electric heating plate clamped between the upper bottom plate and the lower bottom plate. According to the utility model, vacuum baking can be realized, the temperature distribution is uniform, and the battery baking efficiency and quality can be improved.

Description

Technical Field

[0001] The utility model relates to a battery baking box, in particular to a direct-attachment high-vacuum baking box. Background Art

[0002] In the prior art, vacuum baking and dehumidification is a very critical process in battery production, and most vacuum baking and dehumidification processes need to be completed in a vacuum baking oven. The quality of the vacuum baking oven will directly affect the quality of the battery. For example, if the vacuum degree does not meet the set requirements during vacuum baking and dehumidification, or the temperature is uneven during vacuum baking and dehumidification, the water treatment in the battery electrode electrolyte will not meet the standards. At the same time, water has a great impact on the performance of the battery, including indicators such as voltage, internal resistance, and self-discharge. Specifically, excessive water content will lead to product scrapping and quality degradation. Therefore, in multiple production processes of the battery, the positive and negative electrodes, battery cells, and batteries must be vacuum baked and dehumidified multiple times to remove as much water as possible. The structure of the existing baking oven is to set an electric heating tube on the side wall of the box body, and realize the baking function by heating the box body space. However, this type of heating method cannot ensure uniform temperature distribution in the box body, and there are problems such as incomplete and incomplete baking. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a direct-attach high vacuum baking oven which can realize baking under vacuum conditions, has uniform temperature distribution, and can improve the efficiency and quality of battery baking, in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] A direct-attach high vacuum baking oven comprises a box body, wherein a plurality of baking chambers are arranged in the box body, each baking chamber is provided with a unit cavity, the back side of the unit cavity is connected with a vacuum extraction and nitrogen injection mechanism, and a plurality of direct-attach baking tables evenly distributed up and down are arranged in the unit cavity, wherein the direct-attach baking tables are used for placing batteries to be baked, and the direct-attach baking tables comprise an upper bottom plate, a lower bottom plate, and an electric heating plate sandwiched between the upper bottom plate and the lower bottom plate.

[0006] Preferably, the direct-attachment baking table includes two side panels, which are symmetrically arranged on the left and right sides of the upper bottom plate.

[0007] Preferably, a plurality of round-shaped reinforcement ribs are provided on the outer side of the unit cavity, and the round-shaped reinforcement ribs are channel steel reinforcement ribs.

[0008] Preferably, an electrode assembly is provided on the back side of the unit cavity, and the electrode assembly is electrically connected to the electric heating plate.

[0009] Preferably, the box body is provided with three layers of baking chambers which are sequentially distributed up and down.

[0010] Preferably, three doors are provided on the front side of the box body, and the doors correspond to the baking chambers one by one.

[0011] Preferably, a control cabinet is provided on the side of the box body, and a control panel is provided on the control cabinet. The vacuuming and nitrogen injection mechanism and the electric heating plate are electrically connected to the control panel respectively.

[0012] The utility model discloses a direct-attach high-vacuum baking oven, wherein a plurality of baking chambers are arranged inside the oven, and each baking chamber is an independent baking studio. A unit cavity is installed in the baking chamber, and a vacuuming operation or nitrogen injection operation is performed on the inner cavity space of the unit cavity by utilizing a vacuuming and nitrogen injection mechanism on the back side of the unit cavity. When baking a battery, the unit cavity can be in a vacuum state, thereby reducing the boiling point of water and ensuring rapid evaporation of the water. At the same time, an upper and a lower plurality of direct-attach baking tables are arranged inside the unit cavity, and the direct-attach baking table is formed by stacking an upper bottom plate, an electric heating plate and a lower bottom plate in sequence. When a battery is placed on the direct-attach baking table, direct-attach heat conduction can be realized to allow the battery to be fully heated. In addition, the direct-attach baking tables evenly distributed above and below can also evenly distribute the temperature in the unit cavity, which can effectively improve the battery baking efficiency and the baking process quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the direct-attachment high vacuum baking oven of the utility model;

[0014] Figure 2 The internal structure of the utility model direct-attachment high vacuum baking oven Figure 1 ;

[0015] Figure 3 The internal structure of the utility model direct-attachment high vacuum baking oven Figure 2 ;

[0016] Figure 4 The three-dimensional unit cavity Figure 1 ;

[0017] Figure 5 The three-dimensional unit cavity Figure 2 ;

[0018] Figure 6 It is the structural diagram of the direct-attach baking table;

[0019] Figure 7 This is an exploded view of the direct-attach baking table. DETAILED DESCRIPTION

[0020] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0021] The utility model discloses a direct-attachment high vacuum baking oven, combined with Figures 1 to 7 As shown, it includes a box body 1, wherein the box body 1 is provided with a plurality of baking chambers 2, wherein each baking chamber 2 is provided with a unit cavity 3, wherein the back side of the unit cavity 3 is connected with a vacuum extraction and nitrogen injection mechanism 4, wherein the unit cavity 3 is provided with a plurality of vertically evenly distributed direct-attached baking tables 5, wherein the direct-attached baking tables 5 are used for placing batteries to be baked, and wherein the direct-attached baking tables 5 include an upper bottom plate 50, a lower bottom plate 51, and an electric heating plate 52 sandwiched between the upper bottom plate 50 and the lower bottom plate 51.

[0022] In the above structure, a multi-layer baking chamber 2 is provided in the box body 1, and each baking chamber 2 is an independent baking studio. A unit cavity 3 is installed in the baking chamber 2. The vacuuming and nitrogen injection mechanism 4 on the back side of the unit cavity 3 is used to vacuumize or inject nitrogen into the internal cavity space. When baking the battery, the unit cavity 3 can be in a vacuum state, thereby reducing the boiling point of water and ensuring rapid evaporation of water. At the same time, upper and lower multi-layer direct-attach baking tables 5 are arranged in the unit cavity 3. The direct-attach baking table 5 is composed of an upper bottom plate 50, an electric heating plate 52 and a lower bottom plate 51 stacked in sequence. When the battery is placed on the direct-attach baking table 5, direct-attach heat conduction can be realized to allow the battery to be fully heated. In addition, the direct-attach baking tables 5 evenly distributed above and below can also make the temperature in the unit cavity 3 evenly distributed, which can effectively improve the battery baking efficiency and baking process quality.

[0023] Regarding the vacuuming and nitrogen injection mechanism 4, in this embodiment, the direct-attachment three-layer high vacuum baking oven collects information through the control panel, and the resistance silicon tube air pressure sensor feeds back to the vacuum gauge, thereby ensuring that the stable air pressure value is not affected by the airflow, and the vacuum degree is adjustable from 10Pa to 100Pa, and the adjustable accuracy is 1Pa. The vacuum pump is used to evacuate and dehumidify, and (heating-nitrogen filling-vacuuming) is repeatedly cycled within the set program, and the digital technology of analog engineering is used to control the vacuum degree through the electromagnetic valve fully automatic digital display. It can more accurately and effectively make the baking chamber quickly reach the set vacuum state and speed up the baking speed.

[0024] As a preferred embodiment, the direct-attach baking table 5 includes two side panels 53, which are symmetrically arranged on the left and right sides of the upper bottom plate 50. The two side panels 53 mainly play a shielding role at the side to ensure that heat is concentrated in the space above the direct-attach baking table 5.

[0025] In order to improve the structural stability of the unit cavity 3, in this embodiment, a plurality of circular reinforcement ribs 54 are provided on the outer side of the unit cavity 3, and the circular reinforcement ribs 54 are channel steel reinforcement ribs. The circular reinforcement ribs 54 provided in this embodiment have one function of mechanically reinforcing the unit cavity 3 and improving the ability of the unit cavity 3 to carry batteries, and another function of preventing the unit cavity 3 from being attached to the inner wall of the baking chamber 2, thereby reducing heat loss.

[0026] As a preferred embodiment, an electrode assembly 30 is provided on the back side of the unit cavity 3 , and the electrode assembly 30 is electrically connected to the electric heating plate 52 .

[0027] In this embodiment, a direct-attach three-layer high-vacuum baking oven is provided with a heating system direct-attach resistance heating plate for making the temperature uniform and quickly increasing. The heating system resistance heating plate is installed on the bottom of the baking chamber to directly heat the battery, with high heating efficiency, small energy loss, and temperature uniformity controlled at ±2°C.

[0028] Furthermore, the box body 1 is provided with three layers of baking chambers 2 which are distributed in sequence from top to bottom. The front side of the box body 1 is provided with three doors 6, and the doors 6 correspond to the baking chambers 2 one by one. Specifically, the direct-attached three-layer high-vacuum baking oven of this embodiment includes a box body, and the box body has three baking studios on the upper, middle and lower layers for placing batteries. The direct-attached three-layer high-vacuum baking oven is provided with a direct-attached heating system for making the temperature uniform and quickly increased. The baking chamber of the direct-attached three-layer high-vacuum baking oven is made of high-quality stainless steel plates resistant to strong acid and alkali corrosion, welded and polished, and reinforced with channel steel reinforcement ribs to ensure the strength and durability of the baking chamber under vacuum. The box body is made of high-quality cold-rolled plates with special surface treatment and electrostatic spraying. The door and door frame of the intelligent control vacuum dehumidifier are made of high-performance sealing materials and have a silicone sealing ring with a unique sealing method, which has good sealing, corrosion resistance and aging resistance.

[0029] In order to facilitate automatic control, in this embodiment, a control cabinet 7 is provided on the side of the box body 1, and a control panel 8 is provided on the control cabinet 7. The vacuum pumping and nitrogen injection mechanism 4 and the electric heating plate 52 are electrically connected to the control panel 8 respectively. Specifically, the electrical control system is composed of a control panel and a power distribution control cabinet. The control panel is provided with a PLC touch screen, a temperature control meter, a vacuum gauge and a switch button. The power distribution control cabinet is equipped with a distribution board bottom plate, a main power leakage circuit breaker and other electrical components. The PLC touch screen is used to control the vacuum pumping, nitrogen filling, heating, air transportation and other working steps, the temperature control meter is used to control the temperature uniformity, and the vacuum gauge is used to control the vacuum degree. Through these automated designs, the equipment is ensured to work safely and stably.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A direct-attach high vacuum baking oven, characterized in that: The invention comprises a box body (1), wherein a plurality of baking chambers (2) are arranged in the box body (1), wherein each baking chamber (2) is provided with a unit cavity (3), wherein the back side of the unit cavity (3) is connected with a vacuum extraction and nitrogen injection mechanism (4), wherein the unit cavity (3) is provided with a plurality of straight-attached baking tables (5) evenly distributed up and down, wherein the straight-attached baking tables (5) are used to place batteries to be baked, and wherein the straight-attached baking tables (5) comprise an upper bottom plate (50), a lower bottom plate (51), and an electric heating plate (52) sandwiched between the upper bottom plate (50) and the lower bottom plate (51).

2. The direct-attach high vacuum baking oven according to claim 1, characterized in that: The direct-attach baking table (5) comprises two side panels (53), and the two side panels (53) are symmetrically arranged on the left and right sides of the upper bottom plate (50).

3. The direct-attach high vacuum baking oven according to claim 1, characterized in that: A plurality of circular reinforcement ribs (54) are provided on the outer side of the unit cavity (3), and the circular reinforcement ribs (54) are channel steel reinforcement ribs.

4. The direct-attach high vacuum baking oven according to claim 1, characterized in that: An electrode assembly (30) is provided on the back side of the unit cavity (3), and the electrode assembly (30) is electrically connected to the electric heating plate (52).

5. The direct-attach high vacuum baking oven according to claim 1, characterized in that: The box body (1) is provided with three layers of baking chambers (2) which are sequentially arranged up and down.

6. The direct-attach high vacuum baking oven according to claim 5, characterized in that: The front side of the box body (1) is provided with three doors (6), and the doors (6) correspond one to one with the baking chambers (2).

7. The direct-attach high vacuum baking oven according to claim 5, characterized in that: A control cabinet (7) is provided on the side of the box body (1), and a control panel (8) is provided on the control cabinet (7). The vacuum pumping and nitrogen injection mechanism (4) and the electric heating plate (52) are respectively electrically connected to the control panel (8).

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