Battery cell preheating tunnel furnace

Abstract

The utility model provides a battery cell preheating tunnel furnace which comprises a furnace body, a first lifting machine, a second lifting machine, a battery cell storage area and a third lifting machine are sequentially arranged in the furnace body in the battery cell conveying direction, the first lifting machine is used for receiving incoming battery cells so as to provide the battery cells for the second lifting machine, and the third lifting machine is used for storing the battery cells. The second elevator is used for conveying the battery cells received from the first elevator to the battery cell storage area for feeding, the battery cells are preheated in the battery cell storage area, and the third elevator is used for receiving the battery cells output from the battery cell storage area for discharging; the second elevator provides a preset number of battery cells for the battery cell storage area every time, and the third elevator receives the battery cells with the same number as the preset number from the battery cell storage area every time. According to the utility model, the circulation of the trays for storing the battery cells in the preheating furnace is realized by virtue of the interaction of the adjacent trays in the battery cell storage area, so that a complicated conveying structure is omitted, and the defects in the prior art are overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field generally. More specifically, the utility model relates to a kind of battery preheating tunnel furnace. BACKGROUND

[0002] Lithium battery cell is heated in battery preheating tunnel furnace before hot pressing. The cell heated in preheating tunnel furnace can avoid deformation during hot pressing, and has good shaping effect on the cell during hot pressing. The consistency of the cell shaping is high. In addition, the cell can be quickly formed after hot pressing after preheating. Compared with the traditional hot pressing forming process, the cell shaping efficiency can be greatly improved after preheating and hot pressing.

[0003] The existing battery preheating tunnel furnace needs to transport the battery in a long tunnel furnace and heat the battery during transportation. The preheating process uses a tunnel furnace product that includes a lot of conveying structure. The tunnel furnace itself has a complex structure, and the manufacturing cost is also high. The frequency of routine maintenance and repair is also high, and the maintenance cost caused by replacement of parts is also high.

[0004] Therefore, there is an urgent need to provide a battery preheating tunnel furnace to solve the problem. UTILITY MODEL CONTENT

[0005] To solve at least one or more of the problems in the background art, the utility model provides a battery preheating tunnel furnace,

[0006] Therefore, the utility model provides the following technical scheme.

[0007] The utility model discloses a kind of battery preheating tunnel furnaces, comprising: furnace body, the first elevator, the second elevator, the battery storage area, the third elevator are sequentially arranged in the furnace body along the direction of battery conveying, the first elevator is used to receive incoming battery to provide battery to the second elevator, the second elevator is used to convey the battery received from the first elevator to the battery storage area above material, battery is preheated in the battery storage area, the third elevator is used to receive the battery exported from the battery storage area below material, the second elevator provides once preset quantity of battery to the battery storage area, the third elevator receives once the same quantity of battery as the preset quantity from the battery storage area.

[0008] Preferably, the lifting height of the first elevator is lower than the lifting height of the second elevator, and the lifting height of the second elevator is the same as the lifting height of the third elevator and higher than the height of the highest storage layer of the battery storage area.

[0009] Preferably, the battery cell storage area is an independent closed space, and front and rear of the independent closed space are provided with closed door structures for isolating the feeding area where the first lifting machine and the second lifting machine are located and the discharging area where the third lifting machine is located, and the independent closed space is internally provided with an air outlet and an air return, the air outlet and the air return are oppositely arranged on the left and right sides of the independent closed space and both face the storage layer, and the independent closed space further comprises a heating device and a blowing device, the heating device is used for heating the inert gas entering the battery cell storage area, and the blowing device is used for circulating the inert gas entering the battery cell storage area, and the independent closed space is further connected with a negative pressure pipeline, and the negative pressure pipeline is provided with a stop valve.

[0010] Preferably, the battery cell storage area has a plurality of groups of storage layers, the closed door structure of each group of storage layers is independently arranged, each group of storage layers has an upper support rail and a lower support rail, and the upper support rail and the lower support rail are both used for supporting the tray storing the battery cell, and the upper support rail and the lower support rail are both continuously arranged rails.

[0011] Preferably, the bottom end of the lifting part of any lifting machine is provided with a support table, the support table is used for supporting the tray storing the battery cell, and the upper side of the support table of the first lifting machine and the second lifting machine is further provided with a rodless cylinder, the sliding block of the rodless cylinder is fixedly connected with a finger cylinder, and when the sliding block moves forward along the battery cell conveying direction, the finger cylinder is used for contacting and pushing the tray storing the battery cell, so as to push the tray storing the battery cell from the first lifting machine to the second lifting machine or from the second lifting machine to the storage layer of the battery cell storage area.

[0012] The technical scheme provided in the application can have the following beneficial effects:

[0013] By utilizing the device described in the above and multiple schemes of the utility model, namely, the utility model can sequentially set the first elevator, the second elevator, the electric core storage area and the third elevator, wherein the first elevator is used for receiving incoming electric cores to provide the electric cores to the second elevator, the second elevator is used for conveying the electric cores received from the first elevator to the electric core storage area to feed the electric cores, the electric cores are preheated in the electric core storage area, the third elevator is used for receiving the electric cores output from the electric core storage area to feed the electric cores, the second elevator provides the electric cores of the preset quantity to the electric core storage area once, and the third elevator receives the electric cores of the same quantity as the preset quantity from the electric core storage area once. Namely, when the second elevator provides the trays storing the electric cores to the electric core storage area one by one, the trays located in the electric core storage area form the placing state of sequentially adjacent, when the electric core storage area is full of the trays, when the second elevator provides a tray to the beginning end of the electric core storage area again, the trays already located in the electric core storage area will move forward in an orderly manner under the action of the tray provided by the second elevator, at this time, the third elevator receives a tray from the end of the electric core storage area, and the same quantity of electric cores is placed on each tray during preheating, so that the second elevator provides the electric cores of the preset quantity to the electric core storage area once, and the third elevator receives the electric cores of the same quantity as the preset quantity from the electric core storage area once.

[0014] The utility model relies on the interaction of the adjacent trays in the electric core storage area, realizes the circulation of the trays storing the electric cores in the preheating furnace, can ensure that the preheating time of all the electric cores in the electric core storage area is the same, and also saves the complex conveying structure, effectively solves the defects of the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the exemplary embodiments of the present application will be readily understood through reading the detailed description of the exemplary embodiments of the present application below, with reference to the accompanying drawings. In the drawings, several embodiments of the present application are shown by way of example and not limitation, and the same or corresponding reference numbers indicate the same or corresponding parts in which:

[0016] Figure 1 is a schematic view showing the internal structure of one embodiment of the utility model;

[0017] Figure 2 is a schematic view showing Figure 1 is a partial enlarged view of A in

[0018] BRIEF DESCRIPTION OF DRAWINGS 10, tray; 11, first elevator; 12, second elevator; 13, third elevator; 31, storage layer; 41, upper support rail; 42, lower support rail; 51, lifting part; 52, support table; 53, rodless cylinder; 54, finger cylinder. DETAILED DESCRIPTION

[0019] Embodiments will now be described with reference to the drawings. It should be appreciated that, for simplicity and clarity of illustration, where appropriate, reference numerals can be repeated in the drawings and the descriptions below to indicate like components. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be apparent to one of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to obscure the embodiments described herein. Also, this description is not to be taken as limiting the scope of the embodiments described herein.

[0020] According to one embodiment of the present application, a kind of electric core preheating tunnel furnace is provided, as shown in Figure 1 And Figure 2 As shown, it includes furnace body, first elevator 11, second elevator 12, electric core storage area, third elevator 13 are sequentially arranged in the furnace body along the direction of electric core conveying, first elevator 11 is used to receive incoming material electric core to provide electric core to second elevator 12, second elevator 12 is used to convey the electric core received from first elevator 11 to the electric core storage area above material, electric core is preheated in the electric core storage area, third elevator 13 is used to receive the electric core exported from the electric core storage area below material, second elevator 12 provides a preset number of electric cores to the electric core storage area every time, and third elevator 13 receives the same number of electric cores as the preset number from the electric core storage area once.

[0021] In the above, the above structure sequentially arranged along the direction of electric core conveying meets the process requirements of feeding, electric core preheating and discharging. At the same time, since the second elevator 12 located in the feeding area provides a preset number of electric cores to the electric core storage area for preheating electric cores, the third elevator 13 located in the discharging area can receive the same number of electric cores as the preset number from the electric core storage area once, so as to ensure that all electric cores passing through the electric core storage area have the same preheating time.

[0022] In one embodiment, the lifting height of the first elevator 11 is lower than the lifting height of the second elevator 12, and the lifting height of the second elevator 12 is the same as the lifting height of the third elevator 13 and higher than the height of the highest storage layer 31 of the electric core storage area. The advantage of making the lifting height of the first elevator 11 lower than the lifting height of the second elevator 12 is beneficial to the front-end operation, that is, reducing or setting the height of the first elevator 11 lower than the lifting height of the second elevator 12 is beneficial to the first elevator 11 receiving incoming material electric core. If the first elevator 11 is set too high, it is inevitable to frequently lower the height of its lifting position to receive incoming material electric core, so here the lifting height of the first elevator 11 is lower than the lifting height of the second elevator 12.

[0023] In one embodiment, the battery cell storage area is an independent closed space, and airtight door structures are arranged at the front and rear of the independent closed space along the battery cell conveying direction to isolate the upper feeding area where the first and second hoists 11 and 12 are located and the lower discharging area where the third hoist 13 is located. An air outlet and an air return are arranged inside the independent closed space, and the air outlet and the air return are oppositely arranged on the left and right sides of the independent closed space and face the storage layer 31. The independent closed space further comprises a heating device and a blowing device. The heating device is used to heat the inert gas entering the battery cell storage area. The blowing device is used to circulate the inert gas entering the battery cell storage area. The independent closed space is further connected to a negative pressure pipeline, and a stop valve is arranged on the negative pressure pipeline.

[0024] In the above embodiment, the inert gas entering the independent closed space through the negative pressure pipeline is heated and circulated in the independent closed space through the blowing device. The furnace body and the battery cell storage area jointly form two-stage isolation for the battery cell, which helps to improve the preheating effect of the battery cell.

[0025] At the same time, since the air outlet and the air return are oppositely arranged on the left and right sides of the independent closed space and face the storage layer 31, the heated inert gas is blown from one side of the independent closed space to the other side, that is, the flow direction of the inert gas is horizontal, which helps to improve the preheating effect of the battery cell. The air outlet and the air return can be realized by arranging the air outlet, the air return and the air duct, which are all prior art and will not be described here.

[0026] In the above embodiment, the battery cell storage area has a plurality of groups of storage layers 31, and the airtight door structures of each group of storage layers 31 are independently arranged. Each group of storage layers 31 has an upper support rail 41 and a lower support rail 42, and the upper support rail 41 and the lower support rail 42 are used to support the tray 10 storing the battery cell. The upper support rail 41 and the lower support rail 42 are continuous rails. Specifically, the upper support rail 41 and the lower support rail 42 are T-shaped rails or L-shaped rails, and the edges extending inward of the storage layer 31 support the tray 10 storing the battery cell to form support for the tray 10.

[0027] In the above embodiment, the bottom end of the lifting part 51 of any of the hoists has a support table 52 for supporting the tray 10 storing the battery cells; the upper part of the support table 52 of the first hoist 11 and the second hoist 12 is further provided with a rodless cylinder 53, the sliding block of the rodless cylinder 53 is fixedly connected with a finger cylinder 54, when the sliding block moves forward along the battery cell conveying direction, the finger cylinder 54 is used to contact and push the tray 10 storing the battery cells, so as to push the tray 10 storing the battery cells from the first hoist 11 to the second hoist 12 or from the second hoist 12 to the storage layer 31 of the battery cell storage area.

[0028] The structure of the support table 52 can also be a T-shaped track or an L-shaped track, and the inner side width of the support table 52 of the lifting part 51 of any of the hoists is the same as the width of the upper support track 41 and the lower support track 42 of the storage layer 31, the height of the lifting part 51 of each hoist is adjusted to make the support table 52 adapt to the upper support track 41 or the lower support track 42 of the storage layer 31, so that when the height of the support table 52 is the same as the height of the upper support track 41 or the lower support track 42 of the storage layer 31, the tray 10 of the battery cells on the support table 52 of the second hoist 12 is pushed by the finger cylinder 54 to enter the battery cell storage area when the sliding block of the rodless cylinder 53 moves, when the second hoist 12 provides the tray 10 storing the battery cells to the battery cell storage area one by one, the trays 10 in the battery cell storage area form a sequentially adjacent arrangement state, and as the trays 10 of each storage layer 31 in the battery cell storage area increase, each storage layer 31 of the battery cell storage area is filled with the trays 10, that is, each storage layer 31 reaches full load, when the second hoist 12 provides a tray 10 to the beginning end of the battery cell storage area again, the trays 10 already in the battery cell storage area will move forward as a whole under the action of the tray 10 provided by the second hoist 12, at the same time, the lifting part 51 of the third hoist 13 receives a tray 10 from the end of the battery cell storage area, the same number of battery cells are placed in each tray 10 during preheating, so that the second hoist 12 provides a preset number of battery cells to the battery cell storage area each time, and the third hoist 13 receives the same number of battery cells from the battery cell storage area each time, so that the battery cells circulate in the battery cell storage area.

[0029] It should be understood that the possible terms "first" or "second" and the like in the claims, specification and drawings of the utility model are used to distinguish different objects, rather than to describe a specific order. The terms "comprise" and "include" used in the specification and claims of the utility model indicate the presence of the described features, whole, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0030] It should also be understood that the terms used herein in the specification and claims are for the purpose of describing particular embodiments only and are not intended to be limiting, as the scope of the disclosure will be limited only by the appended claims. As used herein in the specification and claims, the singular form "a", "an", and "the" include plural references unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, as well as the lack of combinations when interpreted in the alternative ("or").

[0031] Although the embodiments of the present disclosure are as above, the content is only for the convenience of understanding the present disclosure and is not intended to limit the scope and application of the present disclosure. Any person skilled in the art of the present disclosure can make any modification and change in the form and details without departing from the spirit and scope of the present disclosure. The patent protection scope of the present disclosure shall be subject to the scope defined by the appended claims.

Claims

1. A cell preheating tunnel furnace, characterized in that, The application relates to a battery cell preheating device. The first lifting machine (11) is used for receiving incoming battery cells to provide the battery cells to the second lifting machine (12), the second lifting machine (12) is used for conveying the battery cells received from the first lifting machine (11) to the battery cell storage area to preheat the battery cells, and the third lifting machine (13) is used for receiving the battery cells output from the battery cell storage area.

2. The battery cell preheating tunnel furnace of claim 1, wherein, The lifting height of the first lifting machine (11) is lower than the lifting height of the second lifting machine (12), and the lifting height of the second lifting machine (12) is the same as the lifting height of the third lifting machine (13) and is higher than the height of the highest storage layer (31) of the battery cell storage area.

3. The battery cell preheating tunnel furnace of claim 2, wherein, The battery cell storage area is an independent closed space, and front and rear sides of the independent closed space are provided with closed door structures to isolate an upper feeding area where the first lifting machine (11) and the second lifting machine (12) are located and a lower feeding area where the third lifting machine (13) is located, the independent closed space is internally provided with an air outlet and an air return, the air outlet and the air return are oppositely arranged on left and right sides of the independent closed space and face the storage layer (31), and the independent closed space further communicates with a negative pressure pipeline provided with a stop valve.

4. The battery cell preheating tunnel furnace of claim 3, wherein, The battery cell storage area has a plurality of groups of storage layers (31), the closed door structures of each group of storage layers (31) are independently arranged, each group of storage layers (31) has an upper support rail (41) and a lower support rail (42), the upper support rail (41) and the lower support rail (42) are used for supporting a tray (10) for storing battery cells, and the upper support rail (41) and the lower support rail (42) are continuously arranged rails.

5. The battery cell preheating tunnel furnace of claim 4, wherein, The bottom end of the lifting part (51) of any lifting machine is provided with a support table (52) used for supporting a tray (10) for storing battery cells, the upper side of the support table (52) of the first lifting machine (11) and the second lifting machine (12) is further provided with a rodless cylinder (53), the slider of the rodless cylinder (53) is fixedly connected with a finger cylinder (54), and when the slider moves forward along the battery cell conveying direction, the finger cylinder (54) is used for contacting and pushing the tray (10) for storing battery cells to push the tray (10) for storing battery cells from the first lifting machine (11) to the second lifting machine (12) or push the tray (10) for storing battery cells from the second lifting machine (12) to the storage layer (31) of the battery cell storage area.

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