Baking equipment and baking system

Abstract

The utility model discloses baking equipment and a baking system, and relates to the technical field of shell-in battery cell heating, the baking equipment comprises a machine shell and a heating device, the machine shell is provided with a baking cavity, the heating device is arranged in the baking cavity, and the heating device comprises a plurality of heating structures arranged at intervals in the first direction; a heating gap for placing the in-shell battery cell is formed between every two adjacent heating structures, each heating structure comprises a heating coil extending in the first direction, and in the first direction, one heating coil of one heating structure is opposite to one heating coil of the adjacent heating structure; the heating device has a heating state for generating an alternating magnetic field in the heating gap, and in the heating state, the polarities of the two oppositely arranged heating coils are the same in the first direction; according to the technical scheme provided by the utility model, the heating efficiency of the baking equipment on the battery cell entering the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cell heating, and particularly relates to a baking device and a baking system. Background Art

[0002] The cased cell includes a casing and a cell loaded into the casing. Before the cased cell is liquefied by injection, it needs to be baked by a baking device to remove the moisture in the cased cell. At present, the baking device bakes the cased cell by heating a gas with a heating element, and then flowing the heated gas through the cased cell by a blower to heat the cased cell. The heating element is usually an electric heating tube, a resistance wire, etc. Since the heating element indirectly heats the cased cell through the gas, a large amount of heat is lost during the heat transfer process, which makes the heating efficiency of the baking device for the cased cell relatively low. Summary of the Utility Model

[0003] The main object of the utility model is to provide a baking device and a baking system, aiming to improve the heating efficiency of the baking device for the cased cell.

[0004] To achieve the above object, the baking device proposed by the utility model includes

[0005] A casing having a baking chamber; and

[0006] A heating device disposed in the baking chamber. The heating device includes a plurality of heating structures spaced apart in a first direction. A heating gap for placing the cased cell is provided between two adjacent heating structures. The heating structure includes a heating coil extending in the first direction. In the first direction, a heating coil of one heating structure is disposed opposite to a heating coil of an adjacent heating structure. The heating device has a heating state for generating an alternating magnetic field in the heating gap. In the heating state, in the first direction, the polarities of the two relatively disposed heating coils are the same.

[0007] In one embodiment, the heating structure includes a plurality of the heating coils.

[0008] In one embodiment, the heating structure includes a heating group. The heating group includes a plurality of the heating coils spaced apart in a second direction. In the heating state, in the second direction, the polarities of two adjacent heating coils are different.

[0009] In one embodiment, the heating structure includes a plurality of the heating groups spaced apart in a third direction. In the heating state, in the third direction, the polarities of two adjacent heating coils are different.

[0010] In one embodiment, the heating structure includes a plurality of heating groups arranged in an array in a third direction. Each heating group includes a plurality of heating coils arranged in an array in a second direction. In the heating state, in the second direction, the polarities of two adjacent heating coils are different, and in the third direction, the polarities of two adjacent heating coils are different.

[0011] In one embodiment, a plurality of the heating devices are provided.

[0012] In one embodiment, the plurality of heating devices are arranged at intervals in the second direction.

[0013] The present utility model further provides a baking system, which includes the aforementioned baking equipment.

[0014] In one embodiment, the baking system includes a conveyor belt for conveying the cased battery cells, and a loading mechanism, an unloading mechanism, and a cooling device all arranged on the conveyor belt. In the conveying direction of the conveyor belt, the loading mechanism, the baking equipment, the cooling device, and the unloading mechanism are arranged in sequence.

[0015] In one embodiment, the conveyor belt is configured as a conveying return belt. The baking system further includes a transfer vehicle for carrying the cased battery cells. The transfer vehicle is arranged on the conveyor belt, and the conveyor belt conveys the cased battery cells through the transfer vehicle.

[0016] In the technical solution of the present utility model, when the baking equipment is in the heating state, an alternating magnetic field is generated during the heating interval. The alternating magnetic field directly acts on the cased battery cells, with less heat loss, enabling the cased battery cells to heat up faster, which is beneficial to improving the heating efficiency of the baking equipment for the cased battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the baking system provided by the present utility model;

[0019] Figure 2 It is Figure 1 a schematic structural diagram of the heating device, the cased battery cell, and the transfer vehicle in

[0020] Figure 3 It is Figure 2Schematic diagram of the structure of two heating structures and an in-shell battery cell from the perspective in the z direction;

[0021] Figure 4 is Figure 3 Schematic diagram of the structure of the structure in the x direction in;

[0022] Figure 5 Schematic diagrams of the structures of two heating structures and an in-shell battery cell in some other embodiments;

[0023] Figure 6 Schematic diagrams of the structures of two heating structures and an in-shell battery cell in some other embodiments.

[0024] Explanation of the reference numerals in the drawings:

[0025] 100, baking system; 110, conveyor belt; 120, loading mechanism; 130, unloading mechanism; 140, cooling equipment; 150, transfer vehicle; 200, baking equipment; 400, heating device; 500, heating structure; 510, heating gap; 600, heating group; 700, heating coil; 710, first end; 720, second end; 800, in-shell battery cell.

[0026] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. 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 protection scope of the present utility model.

[0028] It should be noted that 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. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the 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.

[0030] Please refer to Figure 1 , the present utility model provides a baking system 100. The baking system 100 includes a baking device 200, and the baking device 200 is used to bake the cased battery cells 800 to remove the moisture in the cased battery cells 800.

[0031] In some embodiments, the baking system 100 includes a loading mechanism 120 and an unloading mechanism 130. The loading mechanism 120 is used to directly or indirectly move the cased battery cells 800 to the baking device 200 for baking by the baking device 200. The unloading mechanism 130 is used to directly or indirectly move the baked cased battery cells 800 out of the baking device 200 to complete the unloading operation. The loading mechanism 120 and the unloading mechanism 130 respectively replace manual loading and manual unloading, which is beneficial to improving the automation degree of baking the cased battery cells 800.

[0032] In some embodiments, the loading mechanism 120 can be a loading manipulator, and the unloading mechanism 130 can be an unloading manipulator. It should be understood that the structures of the loading mechanism 120 and the unloading mechanism 130 are not limited thereto. In some other embodiments, the structures of the loading mechanism 120 and the unloading mechanism 130 can also be other forms, as long as the loading mechanism 120 can directly or indirectly move the cased battery cells 800 to the baking device 200 for baking by the baking device 200, and the unloading mechanism 130 can directly or indirectly move the baked cased battery cells 800 out of the casing of the baking device 200.

[0033] In some embodiments, the baking system 100 further includes a cooling device 140 and a conveyor belt 110 for conveying the cased battery cells 800. In the conveying direction of the conveyor belt 110, the loading mechanism 120, the baking device 200, the cooling device 140, and the unloading mechanism 130 are arranged in sequence. The conveying direction of the conveyor belt 110 is as Figure 1As shown by the arrow. In this way, the loading mechanism 120 can place the cased battery cell 800 on the conveyor belt 110. The conveyor belt 110 conveys the cased battery cell 800 to the baking device 200. After the baking device 200 finishes baking the cased battery cell 800, it conveys the baked cased battery cell 800 to the cooling device 140 through the conveyor belt 110 to cool the cased battery cell 800. The cooled cased battery cell 800 is conveyed to the unloading mechanism 130 through the conveyor belt 110, and the unloading mechanism 130 unloads the cooled cased battery cell 800. The cooling device 140 cools the cased battery cell 800 by introducing cold air. It should be understood that the way the cooling device 140 cools the cased battery cell 800 is only exemplary and is not intended to limit the protection scope of the present application. The cooling method of the cooling device 140 can also but is not limited to refer to the prior art, and will not be elaborated here too much.

[0034] In some embodiments, the conveyor belt 110 is configured as a conveying return belt. The baking system 100 further includes a transfer vehicle 150 for carrying the cased battery cell 800. The transfer vehicle 150 is arranged on the conveyor belt 110, and the conveyor belt 110 conveys the cased battery cell 800 through the transfer vehicle 150. In this way, under the conveyance of the conveyor belt 110, the transfer vehicle 150 can sequentially pass through the baking device 200, the cooling device 140, and the unloading mechanism 130 from the loading mechanism 120, and finally return to the loading mechanism 120 from the unloading mechanism 130 through the conveyor belt 110. The loading mechanism 120 places the cased battery cell 800 on the transfer vehicle 150. The cased battery cell 800 sequentially flows through the baking device 200, the cooling device 140, and the unloading mechanism 130 from the loading mechanism 120 through the transfer vehicle 150. The cased battery cell 800 carried on the transfer vehicle 150 provides a position for the cased battery cell 800 loaded by the loading mechanism 120 after being unloaded by the unloading mechanism 130.

[0035] In some embodiments, the transfer vehicle 150 remains stationary for a period of time when entering the baking device 200 so that the cased battery cell 800 can be fully baked. During the process of baking the cased battery cell 800 by the baking device 200, vacuum is pumped to make the environment where the cased battery cell 800 is located in a vacuum state, so as to facilitate the evaporation of moisture in the cased battery cell 800. After the vacuum state is maintained for a period of time, the baking device 200 breaks the vacuum with nitrogen. After a preset amount of nitrogen is introduced, vacuum is pumped again to pump away the nitrogen and the moisture evaporated from the cased battery cell 800 together. After the process of pumping vacuum, introducing nitrogen, and pumping vacuum is cycled a preset number of times, the moisture in the cased battery cell 800 is baked to below the preset amount. Of course, in some alternative embodiments, the process of baking the cased battery cell 800 by the baking device 200 can also be other ways, which are not limited here.

[0036] In some embodiments, the transporter 150 is provided with a set of loading positions. The set of loading positions includes a plurality of loading positions arranged at intervals in parallel in the fourth direction. The loading positions are used to carry the cased battery cells 800. The set of loading positions is provided with a plurality of them arranged at intervals in parallel in the fifth direction. Without loss of generality, in this article, the width direction of the transporter 150 is taken as the fourth direction, and the length direction of the transporter 150 is taken as the fifth direction for introduction. In this way, the transporter 150 can transport a plurality of cased battery cells 800 to the baking device 200 at one time, and the baking device 200 can bake a plurality of cased battery cells 800 simultaneously, which is beneficial to improving the efficiency of the baking system 100 for baking the cased battery cells 800. In some other embodiments, the loading positions of the transporter 150 for carrying the cased battery cells 800 can also have other layout methods, such as being arranged in a circular array.

[0037] For the specific structure of the baking device 200, reference can be made to the following description. The structure of the baking device 200 can be referred to Figures 2 to 6 .

[0038] To improve the heating efficiency of the baking device 200 for the cased battery cells 800, in an embodiment of the present invention, the baking device 200 includes a housing and a heating device 400. The housing has a baking chamber. The heating device 400 is disposed in the baking chamber. The heating device 400 includes a plurality of heating structures 500 arranged at intervals in the first direction. A heating gap 510 for placing the cased battery cells 800 is provided between two adjacent heating structures 500. Without loss of generality, in this article, the first direction is taken as Figure 3 the x direction in the figure as an example. It should be noted that the x direction is perpendicular to the y direction and the z direction mentioned later. For placing the cased battery cells 800 in the heating gap 510, as an example, the transporter 150 can enter and exit the baking chamber. When the transporter 150 enters the baking chamber, the fourth direction of the transporter 150 can be arranged in parallel with the first direction. In this way, driven by the conveyor belt 110, it is convenient for the cased battery cells 800 on the transporter 150 to enter and exit the heating gap 510. Of course, the cased battery cells 800 can also be directly taken and placed in the heating gap 510 by the loading manipulator and the unloading manipulator. This exemplary description is not intended to limit the protection scope of the present application. As Figure 3 shown, for the cased battery cells 800 located in the heating gap 510, the first direction is consistent with the width direction of the cased battery cells 800. It should be understood that, Figure 3The relationship between the middle heating gap 510 and the shelled battery cell 800 is only exemplary, and this exemplary description is not intended to limit the protection scope of the present application. The first direction can also be consistent with the length direction of the shelled battery cell 800. In addition, the heating structure 500 includes a heating coil 700 extending along the first direction. In the first direction, one heating coil 700 of one heating structure 500 is arranged opposite to one heating coil 700 of the adjacent heating structure 500. The heating device 400 has a heating state for generating an alternating magnetic field in the heating gap 510. It can be understood that the heating device 400 will enter the heating state after being energized with alternating current. In the heating state, for the shelled battery cell 800 placed in the heating gap 510, the alternating magnetic field will generate eddy currents in the shelled battery cell 800, so that the shelled battery cell 800 can be heated, and then the moisture in the shelled battery cell 800 can be evaporated. Since the alternating magnetic field directly acts on the shelled battery cell 800, it is beneficial to reduce the loss of heat during the transfer process, so that the baking device 200 has a high heating efficiency for the shelled battery cell 800. In the heating state, in the first direction, the polarities of the two relatively arranged heating coils 700 are the same. As Figure 3 shown, the heating coil 700 successively has a first end 710 and a second end 720 in the first direction. In the first direction, the fact that the polarities of the two relatively arranged heating coils 700 are the same means that in the first direction, the first ends 710 of the two relatively arranged heating coils 700 are the same and the second ends 720 are the same. For example, the two first ends 710 are both N poles, and the two second ends 720 are both S poles. Another example is that the two first ends 710 are both S poles, and the two second ends 720 are both N poles. Figure 3 The polarities of the heating coils 700 are exemplary and are not intended to limit the protection scope of the present application. In this way, the degree of mutual interference of the magnetic fields of the two adjacent heating structures 500 can be reduced, so that both heating structures 500 have a high heating efficiency for the shelled battery cell 800.

[0039] In some embodiments, the heating structure 500 includes a plurality of heating coils 700. In this way, the plurality of heating coils 700 improve the heating efficiency of the heating structure 500 for the shelled battery cell 800. In some other embodiments, the heating structure 500 includes one heating coil 700, that is, the heating structure 500 is the heating coil 700. In this way, it is beneficial to reduce the cost of manufacturing the heating structure 500.

[0040] In some embodiments, the heating structure 500 includes a heating group 600. The heating group 600 includes a plurality of heating coils 700 spaced apart in the second direction. In the heating state, in the second direction, the polarities of the two adjacent heating coils 700 are different. It should be understood that the first direction is different from the second direction. Without loss of generality, the second direction in this article takes Figure 3 the y direction in Figure 3As an example, in the second direction, the polarities of two adjacent heating coils 700 are different, that is, in the second direction, the magnetic poles of adjacent first ends 710 are different, and the magnetic poles of adjacent second ends 720 are different. When the magnetic pole of a first end 710 is an N pole, the magnetic pole of the first end 710 adjacent to this first end 710 in the second direction is an S pole. When the magnetic pole of a second end 720 is an S pole, the magnetic pole of the second end 720 adjacent to this first end 710 in the second direction is an N pole. It should be understood that Figure 3 the polarities of the heating coils 700 in Figure 3 are exemplary and are not intended to limit the protection scope of this application. Thus, for the same heating group 600, it is beneficial to reduce the degree of magnetic field interference between two adjacent heating coils 700 in the second direction, so that the heating structure 500 has a higher heating efficiency for the cased battery cell 800.

[0041] In some embodiments, the heating structure 500 includes a plurality of heating groups 600 spaced apart in the third direction. In the heating state, in the third direction, the polarities of two adjacent heating coils 700 are different. It should be understood that the first direction, the second direction, and the third direction are all different. Without loss of generality, in this article, the third direction takes Figure 4 the z direction in Figure 4 as an example. Taking Figure 4 as an example, in the third direction, the polarities of two adjacent heating coils 700 are different, that is, in the third direction, the magnetic poles of adjacent first ends 710 are different, and the magnetic poles of adjacent second ends 720 are different. That is, when the magnetic pole of a first end 710 is an N pole, the magnetic pole of the first end 710 adjacent to this first end 710 in the third direction is an S pole. When the magnetic pole of a second end 720 is an S pole, the magnetic pole of the second end 720 adjacent to this first end 710 in the third direction is an N pole. It should be understood that Figure 4 the polarities of the heating coils 700 in Figure 4 are exemplary and are not intended to limit the protection scope of this application. Thus, the degree of mutual interference of the magnetic fields generated by adjacent heating groups 600 in the third direction is reduced, so that the heating structure 500 has a higher heating efficiency for the cased battery cell 800.

[0042] In some embodiments, the heating structure 500 includes a plurality of heating groups 600 arranged in an array in the third direction. The heating group 600 includes a plurality of heating coils 700 arranged in an array in the second direction. In the heating state, in the second direction, the polarities of two adjacent heating coils 700 are different, and in the third direction, the polarities of two adjacent heating coils 700 are different. Thus, the arrangement of the plurality of heating coils 700 of the heating structure 500 is relatively regular, which is beneficial to making the cased battery cell 800 be heated evenly. In addition, it is beneficial to reduce the degree of mutual interference of the magnetic fields generated by the respective heating coils 700 of the heating structure 500, which is beneficial to improving the heating efficiency of the heating device 400. In some embodiments, such as Figure 4As shown, the heating structure 500 includes three heating groups 600 arranged in an array in the third direction, and each heating group 600 includes two heating coils 700 arranged in an array in the second direction. In some other embodiments, such as Figure 5 As shown, the heating structure 500 includes three heating groups 600 arranged in an array in the third direction, and each heating group 600 includes three heating coils 700 arranged in an array in the second direction. In some other embodiments, such as Figure 6 As shown, the heating structure 500 includes four heating groups 600 arranged in an array in the third direction, and each heating group 600 includes four heating coils 700 arranged in an array in the second direction. It should be understood that the number of heating groups 600 and the number of heating coils 700 in each heating group 600 can be set according to actual needs and are not limited herein.

[0043] In some embodiments, there are multiple heating devices 400. In this way, it is beneficial to improve the baking efficiency of the baking device 200 for the cored shell cores.

[0044] In some embodiments, the multiple heating devices 400 are arranged at intervals in the second direction. In this way, the baking device 200 can bake more cored shell cores 800 at the same time, which is beneficial to improving the baking efficiency of the baking device 200 for the cored shell cores 800. In addition, the multiple heating groups 600 are distributed more regularly, which is convenient for placing and removing the cored shell cores 800 on the corresponding heating devices 400. As Figure 2 shown, when the transfer vehicle 150 enters the baking chamber, the fourth direction of the transfer vehicle 150 is arranged in parallel with the first direction, and the fifth direction is arranged in parallel with the second direction. One bearing position group is arranged corresponding to one heating device 400, and one bearing position is arranged corresponding to one heating gap 510. In this way, driven by the conveyor belt 110, the multiple bearing position groups on the transfer vehicle 150 respectively pass through the corresponding heating groups 600, and one bearing position respectively passes through the corresponding heating gap 510. In this way, the operating efficiency of the transfer vehicle 150 is improved, and indirectly the baking efficiency of the baking system 100 for the cored shell cores 800 is improved. It should be understood that this is only exemplary, and the method of placing and removing the cored shell cores 800 can also be realized by other structures, such as loading manipulators and unloading manipulators, and will not be elaborated herein.

[0045] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A baking device, characterized in that: include a housing having a baking cavity; and A heating device is arranged in the baking chamber, the heating device includes a plurality of heating structures arranged at intervals in a first direction, a heating gap for placing shell batteries is provided between two adjacent heating structures, the heating structure includes a heating coil extending along the first direction, in the first direction, a heating coil of one heating structure is arranged opposite to a heating coil of an adjacent heating structure, the heating device has a heating state for generating an alternating magnetic field in the heating gap, in the heating state, in the first direction, the polarities of the two heating coils arranged opposite to each other are the same.

2. The baking device according to claim 1, characterized in that: The heating structure includes a plurality of the heating coils.

3. The baking device according to claim 2, characterized in that: The heating structure includes a heating group, and the heating group includes a plurality of the heating coils spaced apart in a second direction. In the heating state, in the second direction, polarities of two adjacent heating coils are different.

4. The baking device according to claim 3, characterized in that: The heating structure includes a plurality of heating groups spaced apart in a third direction. In the heating state, polarities of two adjacent heating coils in the third direction are different.

5. The baking device according to claim 2, characterized in that: The heating structure includes a plurality of heating groups arranged in an array in a third direction, and the heating group includes a plurality of heating coils arranged in an array in a second direction. In the heating state, in the second direction, the polarities of two adjacent heating coils are different, and in the third direction, the polarities of two adjacent heating coils are different.

6. The baking device according to any one of claims 1 to 5, characterized in that: The heating device is provided in plurality.

7. The baking device according to claim 6, characterized in that: The plurality of heating devices are arranged at intervals in the second direction.

8. A baking system, characterized in that: Comprising the baking device according to any one of claims 1 to 7.

9. The baking system according to claim 8, characterized in that: The baking system includes a conveyor belt for conveying the shelled battery cells, and a loading mechanism, a unloading mechanism and a cooling device all arranged on the conveyor belt. In the conveying direction of the conveyor belt, the loading mechanism, the baking device, the cooling device and the unloading mechanism are arranged in sequence.

10. The baking system according to claim 9, characterized in that: The conveyor belt is configured as a conveyor reflow belt, and the baking system further includes a transfer vehicle for carrying the shelled battery cells, the transfer vehicle is arranged on the conveyor belt, and the conveyor belt transports the shelled battery cells through the transfer vehicle.

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