Oven

Abstract

The utility model discloses an oven which comprises an oven body, the interior of the oven body is divided into an upper independent cavity and a lower independent cavity, each independent cavity is internally provided with a vacuum heating assembly capable of being independently controlled, and the oven body is provided with an oven door for sealing the vacuum heating assemblies; the vacuum heating assembly comprises an inner cavity with an opening in one side, a first shell is arranged outside the inner cavity, a temperature adjusting cavity is defined between the inner cavity and the first shell, vent holes are formed in two side plates of the inner cavity in an array mode, and a temperature adjusting assembly is arranged in the temperature adjusting cavity; a bracket is arranged in the inner cavity, three layers of heating plates are longitudinally arranged on the bracket at intervals, and a protection plate is arranged on each layer of heating plate; a vacuum valve connecting pipe, a dry gas baffle valve connecting pipe, a pressure monitoring threading pipe and a temperature adjusting assembly connecting pipeline which are communicated with the temperature adjusting cavity are mounted on the first shell; the direct heating mode can accelerate the heating efficiency of the product, and can ensure the stability and continuity of the heating temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery ovens, in particular to an oven. Background Art

[0002] Since the water content inside the lithium battery needs to be strictly controlled, water has a great influence on the performance of the lithium battery, including indicators such as voltage, internal resistance, and self-discharge. Excessive water content will lead to product scrapping, quality decline, and even product explosion. Therefore, in multiple production processes of lithium batteries, the positive and negative electrode plates, battery cores, and batteries need to be vacuum baked multiple times to remove as much water as possible.

[0003] The special vacuum oven for batteries is a vacuum oven specially designed for the baking process of lithium-ion batteries. Due to the particularity of the oven materials, the special oven for lithium batteries needs to have the characteristics of being resistant to strong acid and alkali corrosion, precise temperature control, efficient program control, stability, and safety.

[0004] When heating the interior of the existing oven, a heating wire is used to heat the gas, and then a blower is used to drive the internal gas to circulate, so that the temperature in the cavity in contact with the lithium battery rises. Since the wind circulation has a certain impact on the temperature stability, the size of the space inside the cavity and the placement of products will affect the wind circulation effect and the heating effect, ultimately affecting the baking effect of the product. To eliminate the inconsistent baking effect of the same batch, it is necessary to extend the baking time to weaken the difference, resulting in a significant increase in production time. Summary of the Utility Model

[0005] (1) Technical Problem

[0006] The purpose of the utility model is to provide an oven, which solves the problem that there may be stability differences in the baking method of using hot air circulation to raise the temperature in the prior art, resulting in the need to extend the baking time to weaken the baking difference.

[0007] (2) Technical Solution

[0008] To achieve the above purpose, the utility model provides the following technical solution:

[0009] An oven, comprising a box body, wherein the box body is divided into two independent cavities arranged up and down, and an independently controllable vacuum heating component is installed in each independent cavity, and a box door for sealing the vacuum heating component is installed on the box body; the vacuum heating component includes an inner cavity body with an opening on one side, a first shell is arranged outside the inner cavity body, a temperature adjustment cavity is formed by enclosing between the inner cavity body and the first shell, ventilation holes are arranged in an array on two side plates of the inner cavity body, and a temperature adjustment component for conveying temperature adjustment gas into the inner cavity body is arranged in the temperature adjustment cavity; a bracket is installed in the inner cavity body, and three layers of heating plates arranged at longitudinal intervals are installed on the bracket, a protection plate is arranged on each layer of heating plate, and the three layers of heating plates divide the inner cavity body into three longitudinally arranged heating cavities; a vacuum valve connecting pipe, a dry gas baffle valve connecting pipe, a pressure monitoring threading pipe and a temperature adjustment component connecting pipeline communicating with the temperature adjustment cavity are installed on the first shell.

[0010] Preferably, a plurality of support frames are fixedly spaced on the first shell, and each support frame is formed by enclosing a plurality of rectangular tubes.

[0011] Preferably, a second shell is arranged outside the first shell, an insulation cavity is formed by enclosing between the first shell and the second shell, the support frame is located in the insulation cavity, and rock wool is filled in the insulation cavity.

[0012] Preferably, the temperature adjustment component includes cold water circulation pipes respectively arranged outside two side plates of the inner cavity body, and the water inlet joint and the water outlet joint of the cold water circulation pipe extend out of the second shell; fins are evenly distributed on the cold water circulation pipe along the water flow direction; a fan for accelerating the gas flow in the temperature adjustment cavity is installed on the rear plate of the inner cavity body.

[0013] Preferably, both the inner cavity body and the first shell are welded by stainless steel plates.

[0014] Preferably, the number of each layer of heating plates is 2 and they are arranged side by side, a temperature detection sensor is connected to each heating plate, and a patrol temperature sensor is also arranged in the inner cavity body; a threading pipe for passing through and connecting the temperature detection sensor and the patrol temperature sensor is installed on the first shell.

[0015] Preferably, a sealing strip is arranged at the part where the vacuum heating component is attached to the box door.

[0016] Preferably, a locking structure for locking the box door is arranged on the box body, the locking structure includes a handle fixing part fixed on the box door and a handle base fixed on the box body, a handle is rotatably installed on the handle base, a handle ring is installed on the handle through a rotating shaft, and when the handle rotates away from the handle base, the handle ring is tightened with the handle fixing part.

[0017] Preferably, a cantilever control box is installed on the box body.

[0018] Preferably, a plurality of mounting plates for fixing on the box body are provided on the vacuum heating assembly.

[0019] (III) Beneficial effects

[0020] By integrating a bracket in the inner cavity and longitudinally arranging three layers of heating plates at intervals on the bracket, and a protection plate is arranged on the heating plates, the product can be placed on the protection plate, and the product can be directly heated and baked by the heating plates. Three heating cavities can be used to place the product inside, and the direct heating method can accelerate the heating efficiency of the product and ensure the stability and continuity of the heating temperature.

[0021] At the same time, by adjusting the temperature component to flow the temperature-adjusting gas in the temperature-adjusting cavity, the temperature in the inner cavity can be adjusted to a certain extent. However, the flowing temperature-adjusting gas will not affect the heating and baking temperature of the product, and can maintain a certain temperature range, so as to ensure the consistency and uniformity of the heating temperature of the products in the entire inner cavity, avoid the situation of different baking effects, improve the baking effect and shorten the baking time. Description of the drawings

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of the box body with the door removed in an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of the box body in an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of the vacuum heating assembly in an embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of the vacuum heating assembly with the second shell removed in an embodiment of the present invention;

[0027] Figure 6 is a schematic cross-sectional structural diagram of the vacuum heating assembly in an embodiment of the present invention;

[0028] Figure 7 is a schematic structural diagram of the heating structure in an embodiment of the present invention;

[0029] Figure 8 is a schematic structural diagram of the cold water circulation pipe in an embodiment of the present invention;

[0030] In Figures 1 to 8 , the corresponding relationship between the part names or lines and the drawing numbers is as follows:

[0031] Box body 1, independent cavity 2, vacuum heating assembly 3, inner cavity body 31, first housing 32, temperature control cavity 33, ventilation holes 34, temperature control assembly 35, cold water circulation pipe 351, fins 352, fan 353, support bracket 36, heating plate 37, protection plate 38, support frame 39, second housing 310, mounting plate 311, box door 4, vacuum valve connecting pipe 5, dry gas baffle valve connecting pipe 6, pressure monitoring wire threading pipe 7, temperature control assembly connecting pipeline 8, wire threading pipe 9, sealing strip 10, locking structure 11, cantilever control box 12. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] See Figures 1-8 As shown, in the embodiment of the present invention, an oven is proposed, including a box body 1. The box body 1 is divided into two independent cavities 2 arranged up and down. The independent cavities 2 are isolated from each other. Specifically, the control of the independent cavities 2 is also independent. The specific control method can adopt the existing mature technology. Specifically, an independently controllable vacuum heating assembly 3 is installed in each of the independent cavities 2. The vacuum heating assembly 3 is provided with a plurality of mounting plates 311 for fixing on the box body 1. Through the mounting plates 311, the entire vacuum heating assembly 3 is installed and fixed in the box body 1. A box door 4 for sealing the vacuum heating assembly 3 is installed on the box body 1. The vacuum heating assembly 3 is used to form a vacuum inside and heat and bake. The internal seal is achieved through the box door 4 to ensure temperature stability. The two vacuum heating assemblies 3 are both independently controlled, and specific parameters such as temperature and vacuum degree can be independently adjusted.

[0034] Specifically, the vacuum heating assembly 3 includes an inner cavity body 31 with an opening on one side. A first housing 32 is provided outside the inner cavity body 31. A temperature control cavity 33 is formed by enclosing between the inner cavity body 31 and the first housing 32. Ventilation holes 34 are arranged in an array on two side plates of the inner cavity body 31. A temperature control assembly 35 for conveying temperature control gas into the inner cavity body 31 is provided in the temperature control cavity 33. The inner cavities formed by enclosing the inner cavity body 31 and the first housing 32 are all vacuum cavities. Among them, the inner cavity body 31 is mainly used for heating the product, while the temperature control cavity 33 conveys the temperature control gas into the inner cavity body 31 through the ventilation holes 34 by the temperature control assembly 35 to adjust the temperature in the inner cavity body 31 within a certain range.

[0035] A bracket 36 is installed inside the inner cavity body 31. Three heating plates 37 arranged at longitudinal intervals are installed on the bracket 36. A protection plate 38 is provided on each heating plate 37. The three heating plates 37 divide the inner cavity body 31 into three longitudinally arranged heating cavities. By directly baking the products placed on the protection plate 38 through the three heating plates 37 provided on the bracket 36, the direct heating method is realized for baking, which can accelerate the temperature rise and keep the internal temperature uniform. The three divided heating cavities all have a consistent temperature, ensuring that the products are evenly heated and there will be no situation of heating difference. Specifically, when adjusting the temperature, the temperature adjustment gas is introduced through the ventilation holes 34 on both sides to realize temperature adjustment, but there will be no temperature difference impact on the heating state of the products.

[0036] Therefore, the contact heating method can keep the heating temperature of the products rising fast, with high temperature consistency, ensure the consistency of the baking effect of the products, and effectively reduce the baking time.

[0037] Meanwhile, a vacuum valve connecting pipe 5, a dry gas baffle valve connecting pipe 6, a pressure monitoring threading pipe 7, and a connecting pipeline of the temperature adjustment component 35 are installed on the first shell 32 and are communicated with the temperature adjustment cavity 33, so as to facilitate the external connection of the vacuum degree of the inner cavity body 31, the dry gas transportation, the pressure detection, the circuit of the temperature adjustment component 35, etc. After the entire oven is specifically positioned and installed at the use position, the corresponding pipeline and circuit control connections can be realized externally, which is relatively convenient and will not affect the internal structure. The relevant lines that specifically need to be connected can all adopt the existing technologies currently in use.

[0038] In order to ensure the structural stability of the first shell 32 after the inside of the first shell 32 is evacuated, a plurality of support frames 39 are fixedly arranged at intervals on the first shell 32. The support frame 39 is formed by enclosing a plurality of rectangular tubes. The support frame 39 fixedly arranged at intervals on the first shell 32 serves as a reinforcing rib, so that the structural strength of the first shell 32 is improved, thereby ensuring that there will be no deformation after the inside is evacuated.

[0039] Meanwhile, a second shell 310 is provided outside the first shell 32. The first shell 32 and the second shell 310 enclose a heat insulation cavity. The support frame 39 is located in the heat insulation cavity. Rock wool is filled in the heat insulation cavity. The second shell 310 protects the internal first shell 32 and the inner cavity body 31, and realizes the relative limit installation of the support frame 39, forms a heat insulation cavity, and fills rock wool in the heat insulation cavity to realize heat preservation and heat insulation of the inside, further ensuring the stability of the internal heating temperature.

[0040] Specifically, when adjusting the temperature, the temperature-adjusting gas is transported from the temperature-adjusting chamber 33 to the inner cavity 31 through the temperature-adjusting component 35 to achieve temperature adjustment. The temperature-adjusting component 35 includes cold water circulation pipes 351 respectively arranged on the outer sides of two side plates of the inner cavity 31. The water inlet joint and the water outlet joint of the cold water circulation pipe 351 extend out of the second housing 310. Fins 352 are evenly distributed on the cold water circulation pipe 351 along the water flow direction. A fan 353 for accelerating the gas flow in the temperature-adjusting chamber 33 is installed on the rear plate of the inner cavity 31. By circulating external cold water through the cold water circulation pipe 351 and using the fins 352 to exchange heat and cool the gas temperature in the temperature-adjusting chamber 33, and then using the fan 353 to make the cooled gas in the temperature-adjusting chamber 33 flow into the inner cavity 31 through the ventilation holes 34 to adjust the temperature in the inner cavity 31.

[0041] Specifically, the inner cavity 31 and the first housing 32 are both welded by stainless steel plates, which meet the heating requirements of lithium battery products, have good structural strength, and ensure internal sealing.

[0042] When the heating plate 37 is heated, the temperature needs to be detected to facilitate corresponding control of the heating plate 37. Specifically, the number of heating plates 37 in each layer is 2 and they are arranged in parallel. A temperature detection sensor is connected to each heating plate 37. A patrol temperature sensor is also provided in the inner cavity 31. The temperature detection sensor is used to detect the temperature generated by the heating plate 37, while the patrol temperature sensor is used to supplement the detection of the temperature detection sensor to avoid the risk of inability to control the temperature when the sensor is damaged, and the double guarantee reduces the risk.

[0043] At the same time, a wire duct 9 for passing through and connecting the temperature detection sensor and the patrol temperature sensor is installed on the first housing 32, and the corresponding wires are laid through the wire duct 9 at a nearby position to avoid the situation of long wires.

[0044] Specifically, the existing technology can be adopted for controlling the internal integrated circuits, sensors, heating plates 37, etc. An overhanging control box 12 is installed on the box body 1, and an internal integrated control circuit module is used to achieve corresponding adjustment and control.

[0045] Specifically, a sealing strip 10 is provided at the part where the vacuum heating assembly 3 is attached to the door 4. After the door 4 is pressed, the inner cavity 31 is sealed. At the same time, a locking structure 11 for locking the door 4 is provided on the box body 1. The locking structure 11 realizes reliable locking of the door 4. The locking structure 11 includes a handle fixing part fixed on the door 4 and a handle base fixed on the box body 1. A handle is rotatably installed on the handle base. A handle ring is installed on the handle through a rotating shaft. When the handle rotates away from the handle base, the handle ring is tightened with the handle fixing part; by rotating the handle, the handle ring and the handle fixing part are tightened to tighten and limit the door panel, or when rotating in the reverse direction, the handle ring is disengaged from the handle fixing part to facilitate the opening of the door panel.

[0046] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first" and "second" are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An oven, comprising a box, wherein the box is divided into two independent cavities arranged in an upper and lower manner, characterized in that: An independently controllable vacuum heating component is installed in each of the independent cavities, and a door for sealing the vacuum heating component is installed on the box body; The vacuum heating component comprises an inner cavity with an opening on one side, a first shell is disposed outside the inner cavity, the inner cavity and the first shell are enclosed to form a temperature adjustment cavity, ventilation holes are arranged in an array on two side panels of the inner cavity, and a temperature adjustment component for conveying temperature adjustment gas into the inner cavity is disposed in the temperature adjustment cavity; A bracket is installed in the inner cavity, and three layers of heating plates are installed on the bracket and arranged at intervals in the longitudinal direction. A protective plate is provided on each layer of heating plate, and the three layers of heating plates divide the inner cavity into three layers of heating chambers arranged in the longitudinal direction. The first shell is equipped with a vacuum valve connecting pipe, a dry gas damper valve connecting pipe, a pressure monitoring threading pipe and a temperature control component connecting pipeline connected to the temperature control chamber.

2. An oven according to claim 1, characterized in that: A plurality of support frames are fixed on the first shell at intervals, and the support frames are formed by enclosing a plurality of rectangular tubes.

3. An oven according to claim 2, characterized in that: A second shell is disposed outside the first shell, the first shell and the second shell are enclosed to form a heat-insulating cavity, the support frame is located in the heat-insulating cavity, and the heat-insulating cavity is filled with rock wool.

4. An oven according to claim 3, characterized in that: The temperature control assembly comprises a cold water circulation pipe respectively arranged on the outer sides of two side plates of the inner cavity, and a water inlet joint and a water outlet joint of the cold water circulation pipe extend out of the second shell; The cold water circulation pipe is evenly provided with fins along the water flow direction; A fan for accelerating the flow of gas in the temperature regulating cavity is installed on the rear plate of the inner cavity.

5. An oven according to claim 4, characterized in that: The inner cavity and the first shell are both formed by welding stainless steel plates.

6. The oven according to claim 1, characterized in that: There are two heating plates on each layer, which are arranged in parallel. Each heating plate is connected to a temperature detection sensor, and a patrol temperature sensor is also provided in the inner cavity. The first shell is provided with a wiring tube for passing through and connecting the temperature detection sensor and the patrol temperature sensor.

7. An oven according to any one of claims 1 to 6, characterized in that: A sealing strip is provided at the position where the vacuum heating component is in contact with the box door.

8. An oven according to claim 7, characterized in that: The box body is provided with a locking structure for locking the box door, and the locking structure includes a hand fixing piece fixed on the box door and a hand base fixed on the box body, a handle is rotatably mounted on the hand base, and a hand ring is mounted on the handle via a rotating shaft, and when the handle is rotated away from the hand base, the hand ring and the hand fixing piece are tightened.

9. The oven according to claim 7, characterized in that: A cantilever control box is installed on the box body.

10. The oven according to claim 7, characterized in that: The vacuum heating assembly is provided with a plurality of mounting plates for fixing on the box body.

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