Battery vacuum oven

Abstract

The utility model relates to the technical field of battery processing, in particular to a battery vacuum drying oven which comprises a drying oven body. The carrying tray is arranged in the drying oven body and is used for carrying a battery; the heating device is used for heating the battery on the carrying tray; the vacuumizing device is used for exhausting air from the batteries on the carrying tray; the pipeline assembly is arranged in the oven body; wherein the pipeline assembly comprises a main pipeline, an exhaust port on the main pipeline is connected with a vacuumizing device; an exhaust port in the exhaust pipeline is communicated with an air inlet port of the main pipeline, and an air inlet port in the exhaust pipeline faces the carrying tray; the air exhaust pipeline is of a telescopic structure and can freely stretch out and draw back in the direction close to or away from the carrying tray.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, and more specifically, to a vacuum oven for baking batteries. Background Art

[0002] After the battery is assembled, it is necessary to bake the battery to remove the moisture in the battery electrode sheet. This process is crucial for improving the performance of the battery. Baking can not only reduce the internal moisture of the battery, avoid the decomposition of the electrolyte and the generation of gas caused by moisture during the charge and discharge cycle, but also enhance the electrochemical stability of the battery, extend its service life, and ensure the consistency of the battery.

[0003] Currently, the baking equipment in the industry is mainly divided into two categories: oven type and tunnel furnace type. Among them, the oven is favored because of its smaller volume and better temperature and vacuum consistency. However, even in such a relatively precise device as the oven, there are still certain limitations. That is, the oven is usually used to bake multiple batteries at the same time, and the position of the air extraction pipeline in the oven is relatively fixed, and it cannot be adjusted adaptively for different models or different numbers of batteries. Specifically, for batteries of different heights, when the battery height is relatively high, the air extraction pipeline is closer to the battery, and the battery located near the vacuum extraction pipeline often has a lower moisture content, while the battery far from the vacuum extraction pipeline retains relatively more moisture, thus forming a gradient difference in water content. This difference may lead to non-uniformity in the performance of the battery, affecting the quality and reliability of the final product. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a battery vacuum oven, aiming to solve the technical problems mentioned in the background art.

[0005] To solve the above technical problems, the technical solution of the utility model is as follows: A battery vacuum oven includes:

[0006] An oven body;

[0007] A carrier tray, arranged in the oven body and used for carrying the battery;

[0008] A heating device, used for heating the battery on the carrier tray;

[0009] A vacuum pumping device, used for pumping air from the battery on the carrier tray;

[0010] And a pipeline assembly, arranged in the oven body; wherein, the pipeline assembly includes:

[0011] A main pipeline, the exhaust port on which is connected to the vacuum pumping device;

[0012] and an air extraction pipe, the exhaust port thereof is communicated with the intake port of the main pipe, and the intake port thereof faces the loading tray;

[0013] Wherein, the air extraction pipe is of a telescopic structure and can freely telescope in the direction of approaching or departing from the loading tray.

[0014] In any of the above technical solutions, further, the pipeline assembly further includes: a branch pipe, the exhaust port thereof is communicated with the intake port of the main pipe; the branch pipe has more than two intake ports; and there are multiple groups of air extraction pipes, which are respectively connected to the intake ports on the branch pipe.

[0015] In any of the above technical solutions, further, the inner diameter of the main pipe is greater than the inner diameter of the branch pipe, and the inner diameter of the branch pipe is greater than the inner diameter of the air extraction pipe.

[0016] In any of the above technical solutions, further, the air extraction pipe includes:

[0017] a horizontal telescopic pipe communicated with the intake port of the main pipe, and the horizontal telescopic pipe can telescope in the horizontal direction;

[0018] and a vertically arranged vertical telescopic pipe, one end of the vertical telescopic pipe is connected to the intake port of the horizontal telescopic pipe, the other end of the vertical telescopic pipe is set as the intake port of the air extraction pipe, and the vertical telescopic pipe can telescope in the vertical direction.

[0019] In any of the above technical solutions, further, both the horizontal telescopic pipe and the vertical telescopic pipe include: an outer pipe and an inner pipe slidably connected to the outer pipe.

[0020] In any of the above technical solutions, further, a plurality of guide rails extending along the length direction thereof are arranged at intervals along the circumferential direction of the inner wall of the outer pipe, a plurality of sliders extending along the length direction thereof are arranged at intervals along the circumferential direction of the outer wall of the inner pipe, and the guide rails and the sliders are arranged in one-to-one sliding fit; or, a plurality of sliders extending along the length direction thereof are arranged at intervals along the circumferential direction of the inner wall of the outer pipe, a plurality of guide rails extending along the length direction thereof are arranged at intervals along the circumferential direction of the outer wall of the inner pipe, and the guide rails and the sliders are arranged in one-to-one sliding fit.

[0021] In any of the above technical solutions, further, the inner pipe of the horizontal telescopic pipe is connected to the inner pipe of the vertical telescopic pipe and integrally formed; or the outer pipe of the horizontal telescopic pipe is connected to the outer pipe of the vertical telescopic pipe and integrally formed.

[0022] In any of the above technical solutions, further, a pipe support is arranged in the oven box body, and the main pipe is arranged on the pipe support.

[0023] In any of the above technical solutions, further, the pipe support includes:

[0024] A support ring sleeved on the main pipe;

[0025] And a connecting rod, one end of which is connected to the support ring and the other end is arranged at the top of the oven box body.

[0026] In any of the above technical solutions, further, a loading platform is arranged in the oven box body, and the loading platform and the heating device are arranged side by side below the loading tray, wherein the loading platform is used to support the loading tray;

[0027] The heating device includes:

[0028] A heating table arranged in the oven box body;

[0029] And an electric heating column located on the upper end surface of the heating table;

[0030] Wherein, the upper end of the electric heating column is in contact with the bottom of the loading tray.

[0031] Beneficial effects: Compared with the prior art, by setting the air extraction pipe as a telescopic structure that can freely expand and contract in the direction close to or away from the loading tray, the distance between the air extraction pipe and the battery can be adjusted adaptively according to the height of the battery, so that the air extraction pipe can extract the evaporated moisture in each battery, and the problem of large gradient differences in the water content in each battery after baking caused by the intake port of the air extraction pipe being too close to the battery can be avoided. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic internal structure diagram of the present invention;

[0034] Figure 2 It is a schematic internal structure diagram of another perspective of the present invention;

[0035] Figure 3 It is a schematic structure diagram of the pipeline assembly of the present invention;

[0036] Figure 4 It is a schematic structure diagram of the docking of the pipeline assembly of the present invention with the battery;

[0037] Figure 5It is a schematic structural diagram of the air extraction pipeline of the present utility model;

[0038] Figure 6 It is a schematic structural diagram of the connection between the outer pipe and the inner pipe of the air extraction pipeline of the present utility model.

[0039] The description of the reference numerals is as follows:

[0040] 10. Battery; 11. Positive electrode terminal; 12. Negative electrode terminal; 13. Liquid injection port; 100. Oven box body; 200. Loading tray; 300. Heating device; 310. Heating table; 320. Electric heating column; 410. Vacuum extraction pipeline; 500. Pipeline assembly; 510. Main pipeline; 520. Branch pipeline; 530. Air extraction pipeline; 531. Outer pipe; 5311. Guide rail; 532. Inner pipe; 5321. Slide block; 600. Pipeline support; 610. Support ring; 620. Connecting rod; 700. Loading platform. Detailed implementation manners

[0041] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0042] It should be noted that, as shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0043] If there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0044] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" 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, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0046] The following will elaborate on a battery vacuum oven of the present application through the following embodiments.

[0047] Embodiment 1:

[0048] As Figures 1-6 shown, in this embodiment, a battery vacuum oven includes: an oven body 100; a loading tray 200 disposed inside the oven body 100 for loading the battery 10; a heating device 300 for heating the battery 10 on the loading tray 200; a vacuum pumping device for evacuating the battery 10 on the loading tray 200; and a pipeline assembly 500 disposed inside the oven.

[0049] Among them, the pipeline assembly 500 includes: a main pipeline 510, the exhaust port thereof is connected to the vacuum pumping device; and an air extraction pipeline 530, the exhaust port thereof is connected to the intake port of the main pipeline 510, and the intake port thereof faces the loading tray 200.

[0050] Among them, the air extraction pipeline 530 is of a telescopic structure and can freely expand and contract in the direction of approaching or departing from the loading tray 200.

[0051] First, place the battery 10 on the loading tray 200, and then use the heating device 300 to heat the battery 10. Through baking the battery 10, the moisture inside the battery 10 is vaporized and discharged outward through the liquid injection port 13 thereon. On this basis, in order to accelerate the evaporation of moisture, a vacuum pumping device is also provided. By means of the vacuum pumping device, a negative pressure is generated inside the oven box 100. Under the action of the negative pressure, the moisture in each battery 10 is quickly sucked away and discharged.

[0052] Since multiple batteries 10 need to be baked at one time during drying, in order to avoid uneven vaporized moisture during baking of each battery 10, a pipeline assembly 500 is provided. The pipeline assembly 500 includes a main pipeline 510 and an air extraction pipeline 530. By setting the air extraction pipeline 530 to be freely telescopic in the direction close to or away from the loading tray 200, it is used to extract air from each battery 10, so that the distance between the air extraction pipeline 530 and the loading tray 200 can be adjusted according to the height of the battery 10, so that the evaporated moisture in each battery 10 is relatively evenly sucked by the air extraction pipeline 530 through the liquid injection port 13, avoiding a large gradient difference in the water content in each battery 10 after baking. It should be particularly noted that during baking, the liquid injection port 13 of the battery 10 is placed facing the air extraction pipeline 530, and usually the liquid injection port 13 is located between the positive electrode post 11 and the negative electrode post 12 of the battery 10. Of course, in some other embodiments, the liquid injection port 13 may not be provided between the positive electrode post 11 and the negative electrode post 12, which will not be listed one by one here.

[0053] Furthermore, the pipeline assembly further includes a branch pipeline 520, the exhaust port thereon is connected to the intake port of the main pipeline 510; and the branch pipeline 520 has more than two intake ports; there are multiple groups of air extraction pipelines 530, and they are respectively connected to the intake ports on the branch pipeline 520.

[0054] Embodiment Two:

[0055] This embodiment is a further improvement based on Embodiment One.

[0056] As Figure 5 and Figure 6 shown, in this embodiment, the air extraction pipeline 530 can be telescopic in the horizontal direction and the vertical direction.

[0057] In order to enable the vacuum oven to bake batteries 10 of different models and different quantities, at least one intake port of the air extraction pipeline 530 is provided, and the air extraction pipeline 530 can be telescopically set in the horizontal and vertical directions. After this setting, the intake port of the air extraction pipeline 530 can be moved in the horizontal direction and in the vertical direction. Among them, the horizontal movement can move the air extraction pipeline to a relatively central position according to the quantity and placement position of the batteries 10, and the vertical movement can move the intake port of the air extraction pipeline 530 to a suitable position relative to the height of the batteries 10, improving the air extraction uniformity.

[0058] Specifically, the air extraction pipeline 530 includes: a horizontally arranged horizontal telescopic pipeline connected to the intake port of the branch pipeline 520, and the horizontal telescopic pipeline has two or more intake ports along its length direction; and vertically arranged vertical telescopic pipelines, there are multiple vertical telescopic pipelines, and they are respectively connected to the intake ports of the horizontal telescopic pipeline. When the branch pipeline 520 is not provided, the horizontal telescopic pipeline is directly connected to the intake port of the main pipeline 510.

[0059] By pulling the horizontal telescopic pipeline in the horizontal direction, the elongation and shortening of the air extraction pipeline 530 in the horizontal direction can be achieved, and by pulling the vertical telescopic pipeline in the vertical direction, the elongation and shortening of the air extraction pipeline 530 in the vertical direction can be achieved, and the operation is convenient.

[0060] The structures of the horizontal telescopic pipeline and the vertical telescopic pipeline include: an outer pipe 531 and an inner pipe 532 slidably connected to the outer pipe 531.

[0061] A plurality of guide rails 5311 extending along the length direction are circumferentially and spacedly arranged on the inner wall of the outer pipe 531, and a plurality of sliders 5321 extending along the length direction are circumferentially and spacedly arranged on the outer wall of the inner pipe 532, and the guide rails 5311 and the sliders 5321 are arranged in one-to-one sliding fit;

[0062] By arranging the guide rails 5311 on the inner wall of the outer pipe 531 and then arranging the sliders 5321 capable of sliding on the guide rails 5311 on the outer wall of the inner pipe 532, the outer pipe 531 and the inner pipe 532 can slide smoothly during telescoping.

[0063] In other embodiments, a plurality of sliders 5321 extending along the length direction can also be circumferentially and spacedly arranged on the inner wall of the outer pipe 531, and a plurality of guide rails 5311 extending along the length direction are circumferentially and spacedly arranged on the outer wall of the inner pipe 532, and the guide rails 5311 and the sliders 5321 are arranged in one-to-one sliding fit.

[0064] It should be noted that the joint between the outer pipe 531 and the inner pipe 532 needs to be sealed to achieve the sealing effect.

[0065] Furthermore, the inner pipe 532 of the horizontal telescopic pipe is connected and integrally formed with the inner pipe 532 of the vertical telescopic pipe; or the outer pipe 532 of the horizontal telescopic pipe is connected and integrally formed with the outer pipe 532 of the vertical telescopic pipe. Thereby, the connection sealing performance between the horizontal telescopic pipe and the vertical telescopic pipe can be ensured.

[0066] It should be noted that, according to actual needs, as Figure 4 shown, the air extraction pipe 530 can be set to three groups and arranged at intervals along the length direction of the branch pipe 520. In other embodiments, it can also be set to four groups, five groups, etc., which are not limited herein.

[0067] Embodiment Three:

[0068] This embodiment is a further improvement based on any of the above embodiments.

[0069] As Figure 1 and Figure 2 shown, in this embodiment, a pipe support 600 is arranged inside the oven box body 100, and the main pipe 510 is arranged on the pipe support 600.

[0070] By arranging the pipe support 600, the pipeline assembly 500 is fixed inside the oven box body 100.

[0071] Specifically, the pipe support 600 includes: a support ring 610 sleeved on the main pipe 510; and a connecting rod 620, one end of which is connected to the support ring 610 and the other end is arranged at the top of the oven box body 100.

[0072] Embodiment Four:

[0073] This embodiment is a further improvement based on any of the above embodiments.

[0074] As Figure 1 shown, in this embodiment, a loading platform 700 is arranged inside the oven box body 100, and the loading platform 700 and the heating device 300 are arranged side by side below the loading tray 200, wherein the loading platform 700 is used to support the loading tray 200.

[0075] By arranging the loading platform 700, the loading tray 200 is lifted to have a certain height from the bottom of the oven box body 100, thereby facilitating the installation of the heating device 300.

[0076] Specifically, the heating device 300 includes: a heating table 310 disposed at the bottom of the oven box body 100; and an electric heating column 320 located on the upper end surface of the heating table 310;

[0077] Wherein, the upper end of the electric heating column 320 is in contact with the bottom of the load tray 200.

[0078] By supplying power to the electric heating column 320 through the heating table 310, and the electric heating column guides the current to the load tray 200. The load tray 200 is provided with a resistance heating wire. After the load tray 200 is powered on, the resistance heating wire on it generates heat, thereby realizing the heating and baking of the battery 10 located on the load tray 200.

[0079] The various embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application or the improvement of the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the disclosed embodiments.

Claims

1. A battery vacuum oven, characterized in that, Comprising: An oven box body (100); A loading tray (200), arranged inside the oven box body (100) for loading a battery (10); A heating device (300) for heating the battery (10) on the loading tray (200); A vacuum pumping device for evacuating the battery (10) on the loading tray (200); And a pipeline assembly (500), arranged inside the oven box body (100); the pipeline assembly (500) includes: A main pipeline (510), the exhaust port thereon is connected to the vacuum pumping device; And an air extraction pipeline (530), the exhaust port thereon is connected to the intake port of the main pipeline (510), and the intake port thereon faces the loading tray (200); Wherein, the air extraction pipeline (530) is of a telescopic structure and can freely expand and contract in the direction of approaching or departing from the loading tray (200).

2. The battery vacuum drying oven according to claim 1, wherein The pipeline assembly (500) further includes: a branch pipeline (520), the exhaust port thereon is connected to the intake port of the main pipeline (510); the branch pipeline (520) has more than two intake ports; And there are multiple groups of the air extraction pipelines (530), which are respectively connected to the intake ports on the branch pipeline (520).

3. The battery vacuum oven according to claim 2, characterized in that The inner diameter of the main pipeline (510) is greater than the inner diameter of the branch pipeline (520), and the inner diameter of the branch pipeline (520) is greater than the inner diameter of the air extraction pipeline (530).

4. The battery vacuum oven according to claim 1, characterized in that, The air extraction pipeline (530) includes: A horizontal telescopic pipeline connected to the intake port of the main pipeline (510), and the horizontal telescopic pipeline can expand and contract in the horizontal direction; And a vertically arranged vertical telescopic pipeline, one end of the vertical telescopic pipeline is connected to the intake port of the horizontal telescopic pipeline, the other end of the vertical telescopic pipeline is set as the intake port of the air extraction pipeline (530), and the vertical telescopic pipeline can expand and contract in the vertical direction.

5. The battery vacuum oven according to claim 4, wherein Both the horizontal telescopic pipeline and the vertical telescopic pipeline include: an outer pipe (531) and an inner pipe (532) slidably connected to the outer pipe (531).

6. The battery vacuum oven according to claim 5, wherein, A plurality of guide rails (5311) extending along the length direction are arranged at intervals along the circumferential direction on the inner wall of the outer pipe (531), and a plurality of sliders (5321) extending along the length direction are arranged at intervals along the circumferential direction on the outer wall of the inner pipe (532), and the guide rails (5311) and the sliders (5321) are arranged in one-to-one sliding fit; or, a plurality of sliders (5321) extending along the length direction are arranged at intervals along the circumferential direction on the inner wall of the outer pipe (531), and a plurality of guide rails (5311) extending along the length direction are arranged at intervals along the circumferential direction on the outer wall of the inner pipe (532), and the guide rails (5311) and the sliders (5321) are arranged in one-to-one sliding fit.

7. The battery vacuum oven according to claim 5, characterized in that, The inner pipe (532) of the horizontal telescopic pipe is connected to and integrally formed with the inner pipe (532) of the vertical telescopic pipe; or the outer pipe (531) of the horizontal telescopic pipe is connected to and integrally formed with the outer pipe (531) of the vertical telescopic pipe.

8. The battery vacuum oven according to claim 1, characterized in that, A pipe support (600) is provided inside the oven box body (100), and the main pipe (510) is arranged on the pipe support (600).

9. The battery vacuum oven according to claim 8, characterized in that The pipe support (600) includes: A support ring (610) sleeved on the main pipe (510); And a connecting rod (620) with one end connected to the support ring (610) and the other end arranged at the top of the oven box body (100).

10. The battery vacuum oven according to claim 1, characterized in that, A loading platform (700) is provided inside the oven box body (100), and the loading platform (700) and the heating device (300) are arranged side by side below the loading tray (200), wherein the loading platform (700) is used to support the loading tray (200), and the heating device (300) includes: A heating table (310) arranged inside the oven box body (100); And an electric heating column (320) located on the upper end face of the heating table (310); Wherein, the upper end of the electric heating column (320) is in contact with the bottom of the loading tray (200).

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