Battery cell heating equipment
By using mobile mechanisms and electromagnetic heating modules in the battery cell drying equipment, the battery cell shell is directly heated, which solves the problems of large energy consumption, slow heating speed and poor uniformity of the existing equipment, and achieves an efficient and energy-saving battery cell heating effect.
Patent Information
- Application Number
- CN202421731226.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Existing battery cell drying equipment has problems such as large energy consumption, slow heating speed and poor heating uniformity.
Using a moving mechanism and multiple electromagnetic heating modules, the battery cell housing is directly heated through the electromagnetic heating principle. The multiple electromagnetic heating modules are arranged in sequence on the mobile path of the battery cell and arranged in different positions to ensure the uniformity of the heating area.
It reduces energy consumption, improves heating speed and efficiency, ensures heating uniformity, and improves the overall performance and safety of the battery.
Smart Images
Figure CN223067225U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production and manufacturing, and particularly relates to a battery core heating device. Background Art
[0002] In the current production of drying battery cores, the mobile drying furnace is a common drying technology in the market because of its low cost and stable performance; in a common mobile oven-type drying furnace, multiple layers of partitions are arranged in a closed box body to place the battery cores to be dried, heating plates are arranged on the inner wall of the oven, and air extraction ports are arranged inside the oven to form a negative pressure inside the oven to timely take away the moisture evaporated from the battery cores. Since the method of using resistance wires to heat the hot air first and then heat the battery is indirect heating, and the temperature inside the oven needs to be raised first before the battery can be baked, it has high energy consumption, slow heating speed, low efficiency, and poor heating uniformity. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a battery core heating device, aiming to directly heat the battery core by utilizing the characteristics of high electromagnetic heating efficiency, with low energy consumption and fast heating efficiency; through a plurality of arranged electromagnetic heating modules, the problem of uneven temperature distribution during the heating process can also be solved, and the structure is also simple and reliable.
[0004] To achieve the above purpose, the battery core heating device proposed by the utility model includes:
[0005] A moving mechanism for moving the battery core to be heated; and
[0006] A plurality of electromagnetic heating modules, the plurality of electromagnetic heating modules are arranged in sequence on the moving path of the battery core, and the positions of the heating areas generated by the plurality of electromagnetic heating modules on the battery core are different.
[0007] In an embodiment, a plurality of the electromagnetic heating modules are arranged on both opposite sides of the moving path of the battery core, and the plurality of electromagnetic heating modules along the moving path of the battery core are arranged in pairs and opposite to each other in multiple groups.
[0008] In an embodiment, the heating areas generated by two electromagnetic heating modules in the same group on the battery core correspond to each other.
[0009] In an embodiment, the plurality of electromagnetic heating modules arranged on the same side of the moving path of the battery core are arranged to rotate clockwise or counterclockwise at a preset angle.
[0010] In an embodiment, the preset angle is 5° - 90°.
[0011] In an embodiment, the plurality of electromagnetic heating modules arranged on the same side of the moving path of the battery core are axisymmetric about the vertical center line of the electromagnetic heating module at the middle position.
[0012] In one embodiment, the electromagnetic heating module includes a heating component, and the heating component includes an excitation coil and an iron core disposed in the excitation coil.
[0013] In one embodiment, the heating components include two, the two heating components are arranged in parallel, and the iron cores of the two heating components are connected.
[0014] In one embodiment, the spacing distances between any adjacent electromagnetic heating modules on the same side of the battery core moving path are the same.
[0015] In one embodiment, the moving mechanism drives the battery cell at a constant speed.
[0016] In one embodiment, the moving mechanism includes a driving mechanism and a conveyor belt drivingly connected to the driving mechanism.
[0017] The technical solution of the utility model is applicable to the battery manufacturing process. By adopting a moving mechanism and multiple electromagnetic heating modules, the moving mechanism is used to move the battery cell to be heated; the battery heating module applies the principle of electromagnetic heating to directly heat the battery cell shell and dry the moisture in the battery cell; compared with the existing method of using a resistance wire to heat the air first and then heat the battery cell, it can reduce energy consumption and improve heating speed and efficiency; the multiple electromagnetic heating modules are arranged in sequence on the moving path of the battery cell, and the positions of the heating areas generated by the multiple electromagnetic heating modules on the battery cell are different, so that the heating temperatures on the opposite sides of the battery can be kept consistent, which is conducive to ensuring the uniformity of heating, and can effectively control the moisture, thereby ensuring the overall performance and safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0019] Figure 1 A schematic structural diagram of an embodiment of a battery core heating device provided by the utility model;
[0020] Figure 2 A schematic structural diagram of another embodiment of the electric core heating device provided by the utility model;
[0021] Figure 3 A structural schematic diagram of another embodiment of the battery core heating device provided by the utility model;
[0022] Figure 4 forFigure 3 Schematic structural diagram from another perspective in
[0023] Figure 5 Schematic diagram of an embodiment of the heating area of the battery cell.
[0024] Explanation of the reference numerals in the drawings:
[0025] 100, battery cell heating device; 110, moving mechanism; 111, conveyor belt; 120, electromagnetic heating module; 121, heating component; 122, exciting coil; 123, iron core; 200, battery cell; 210, heating area.
[0026] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying 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 accompanying 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection 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, then 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 there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then the 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" 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 solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions 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] In current production of battery cells for drying, the mobile drying furnace is a commonly used drying technology in the market because of its low cost and stable performance. In a common mobile oven-type drying furnace, multiple layers of partitions are arranged in a closed box to place the battery cells to be dried. Heating plates are provided on the inner wall of the oven, and air extraction ports are arranged inside the oven to form a negative pressure inside the oven to timely remove the moisture evaporated from the battery cells. Since the method of first heating the hot air with a resistance wire and then heating the battery is indirect heating, and the temperature inside the oven needs to rise first before the battery can be baked, it has high energy consumption, slow heating speed, low efficiency, and poor heating uniformity.
[0031] Therefore, the present utility model proposes a battery cell heating device, aiming to directly heat the battery cells by utilizing the high efficiency of electromagnetic heating, with low energy consumption and fast heating efficiency; through a plurality of electromagnetic heating modules arranged in an array, the problem of uneven temperature distribution during the heating process can also be solved, and the structure is also simple and reliable.
[0032] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the battery cell heating device 100 includes a moving mechanism 110 and a plurality of electromagnetic heating modules 120.
[0033] During the production process of lithium batteries, a certain amount of moisture will be introduced. If the moisture is not timely controlled within the standard, it will seriously affect the performance and safety performance of the battery. Therefore, before injection, the moisture in the inner electrode plates of the battery needs to be baked to a certain humidity and then the electrolyte is injected; the battery heating module applies the principle of electromagnetic heating to directly heat the shell of the battery cell 200 to dry the moisture inside the battery cell 200; compared with the existing method of first heating the hot air with a resistance wire and then heating the battery cell 200, it can reduce energy consumption and improve the heating speed and efficiency.
[0034] The electromagnetic heating module 120 generally uses an electromagnetic coil to achieve heating by electromagnetic principle. By using an alternating current passing through the coil to generate an alternating magnetic field with continuously changing direction, an alternating current (i.e., eddy current) will be generated inside the conductor in the alternating magnetic field. The Joule effect of the eddy current will cause the temperature of the conductor to rise, thereby achieving heating.
[0035] The moving mechanism 110 should be understood in a broad sense. In the traditional drying oven, the moving method of the battery cell 200 includes manually using tools to move the battery cell 200 to be dried inside the box; therefore, the moving mechanism 110 should not only be understood as a mechanism and / or device that can move the battery cell 200, such as a manipulator; a conveyor belt (chain, roller, belt, etc.); but should also be understood to include the manual moving method.
[0036] The moving path of the battery cell 200 should not be understood only as a straight path, but can also be a horizontal folding path, a curved path, a closed path, etc.
[0037] In addition, the moving path does not necessarily need to be along the horizontal direction, but can be along the vertical direction.
[0038] In order to solve the problem of poor heating uniformity of the existing method of heating the air first and then heating the battery cell 200, the heated battery cell 200 is heated and dried by a moving mechanism 110 through a plurality of electromagnetic heating modules 120. The plurality of electromagnetic heating modules 120 are arranged in sequence on the moving path of the battery cell 200, and the positions of the heating areas 210 generated by the plurality of electromagnetic heating modules 120 on the battery cell 200 are different.
[0039] Each electromagnetic heating module 120 has a different heating area 210 for the battery cell 200, thus ensuring the heating uniformity of the battery cell 200. The electromagnetic heating modules 120 can be arranged on one side of the ventral surface (the side with a larger area / the length side) of the battery cell 200. For example, the ventral surface is divided into four regions: upper, lower, left, and right. A plurality of electromagnetic heating modules 120 are arranged along the moving path of the battery cell 200, respectively corresponding to one of the four regions of upper, lower, left, and right; or two of them; thus achieving the purpose of uniformly heating the battery cell 200.
[0040] The technical solution of the present utility model adopts a moving mechanism 110 and a plurality of electromagnetic heating modules 120. The moving mechanism 110 is used to move the battery cell 200 to be heated; the battery heating module applies the principle of electromagnetic heating to directly heat the shell of the battery cell 200 with work to dry the moisture inside the battery cell 200. Compared with the existing method of using a resistance wire to heat the air first and then heating the battery cell 200, it can reduce energy consumption and improve the heating speed and efficiency; the plurality of electromagnetic heating modules 120 are arranged in sequence on the moving path of the battery cell 200, and the positions of the heating areas 210 generated by the plurality of electromagnetic heating modules 120 on the battery cell 200 are different, so that the heating temperatures on the opposite sides of the battery can be kept consistent, which is beneficial to ensuring the heating uniformity.
[0041] Refer to Figure 5 , the electromagnetic heating modules 120 can also be arranged on both sides of the ventral surface of the battery cell 200. For example, after the rectangular battery cell 200 is erected, the side is the moving direction, and it moves between two opposite electromagnetic heating modules 120.
[0042] Refer to Figures 1 to 4 , in the solution where the electromagnetic heating modules 120 are arranged on the opposite sides of the battery cell 200, in one embodiment, a plurality of the electromagnetic heating modules 120 are provided on both opposite sides along the moving path of the battery cell 200, and the plurality of electromagnetic heating modules 120 along the moving path of the battery cell 200 are arranged in pairs and in multiple groups, so that the heating temperatures on the opposite sides of the battery can be kept consistent, which is beneficial to ensuring the heating uniformity.
[0043] In other embodiments, the battery cells 200 can also be asymmetrically arranged. For example, a plurality of electromagnetic heating modules 120 on one side are arranged at intervals, while a plurality of battery cell modules on the other side are arranged in a staggered manner in the interval areas, just like the two sides of a zipper intersecting.
[0044] Multiple electromagnetic modules are arranged on the moving path of the battery cell 200, and there are various arrangement methods that result in different heating positions on the battery cell 200. For the convenience of installation and to ensure a good heating effect by heating the battery cell 200 according to the preset heating area 210, the multiple electromagnetic heating modules 120 arranged on the same side of the moving path of the battery cell 200 are arranged to rotate clockwise or counterclockwise at a preset angle.
[0045] Specifically, the preset angle is 5° - 90°. Taking the 180° arrangement as an example, starting from the battery heating module in the initial position, it is arranged along the moving path of the battery cell 200 at 5° - 90°; if the preset angle is 5°, then 36 electromagnetic heating modules 120 are arranged; if the preset angle is 10°, then 18 electromagnetic heating modules 120 are arranged; if the preset angle is 15°, then 12 electromagnetic heating modules 120 are arranged; of course, the preset angle can also be 6°, 9°, 20°, etc.
[0046] Furthermore, among the multiple electromagnetic heating modules 120 arranged on the same side of the moving path of the battery cell 200, the multiple electromagnetic heating modules 120 are axially symmetric about the vertical center line of the electromagnetic heating module 120 in the middle position. In this solution, the electromagnetic heating module 120 changes from the initial horizontal arrangement, rotates 180°, and then returns to the horizontal arrangement; the initial position and the final position are symmetric about the electromagnetic heating module 120 arranged vertically in the middle; the axial symmetry about the vertical center line should be understood as the symmetric center line of the electromagnetic heating module 120, and it can be understood that in the actual processing process, there will be unavoidable errors in the assembly process and production process of the electromagnetic heating module 120. Therefore, the axial symmetry of the multiple electromagnetic heating modules 120 about the vertical center line should be judged intuitively and qualitatively from the perspective of ordinary users, rather than determined quantitatively.
[0047] Specifically, the electromagnetic heating module 120 includes a heating component 121, and the heating component 121 includes an exciting coil 122 and an iron core 123 arranged inside the exciting coil 122. To ensure uniform heating of the ventral surface of the battery cell 200, the heating component 121 includes two, and the two heating components 121 are arranged side by side, and the iron cores 123 of the two heating components 121 are connected, so that the alternating magnetic field penetrates the technical shell of the battery cell 200, so that the magnetic field energy can penetrate into the interior of the battery cell 200; adjacent battery heating modules rotate at different angles, so that the heating positions of the exciting coils are changed, solving the situation of local high temperature during the heating process, so as to maximize the heating efficiency.
[0048] The multiple electromagnetic heating modules 120 are symmetrically distributed, that is, the effect of alternating operation of the electromagnetic heating modules is generated, so as to maximize the heating efficiency.
[0049] See also Figure 4 The two electromagnetic heating modules 120 are arranged so as to be regarded as a rectangular heating module, and the two ends of the rectangle respectively generate two opposite rotation directions, thereby forming a circular motion trajectory, which produces a uniform heating effect on the battery cell 200 .
[0050] Regarding the movement of the moving mechanism 110 with the heater core 200 .
[0051] See also Figures 1 to 3 In order to improve heating efficiency and productivity, the moving mechanism 110 includes a driving mechanism and a conveyor belt 111 connected to the driving mechanism. The heated battery cells 200 are arranged on the conveyor belt 111 and pass through multiple electromagnetic heating modules 120 in sequence to achieve uniform heating.
[0052] The moving mechanism 110 heats the battery cell 200 in each electromagnetic heating module 120 for a preset time in a preset direction and at a preset speed.
[0053] Specifically, the spacing distances between any adjacent electromagnetic heating modules 120 are the same. When the conveyor belt 111 moves at a set speed to drive the battery cells 200 uniformly, the heating time of each battery cell 200 on the electromagnetic heating module 120 is the same, ensuring heating uniformity.
[0054] In other solutions, if a local position of the battery cell 200 needs to be specially heated, the heating time can be extended in a specific heating module according to the heating demand; for example, after the battery cell 200 passes through the first three electromagnetic heating modules 120 at a uniform speed, the heating time in the fourth heating module is increased by one-third, and the heating time in the fifth is increased by one-half, etc. Of course, the heating time can also be reduced; the increase or decrease of the heating time can be achieved by using different moving mechanisms 110, such as manual movement or robot movement; and the number of battery cells 200 spaced on the conveyor belt 111.
[0055] In some other solutions, the plurality of electromagnetic heating modules 120 may also be arranged in a non-interval arrangement, so as to adjust the heating time on each electromagnetic heating module 120 to meet different heating requirements.
[0056] In summary, through the battery cell heating device 100 of the embodiment of the present application, the battery cell 200 can be efficiently heated and dried, and energy consumption can be saved. The battery cell heating device 100 of the embodiment of the present application is particularly suitable for the battery manufacturing process, which requires multiple drying treatments. It can effectively control the moisture content and ensure the overall performance and safety of the battery. Compared with the drying furnace, it can greatly improve the drying efficiency, help optimize the production rhythm, thereby improving production efficiency, and can reduce energy consumption and save production costs.
[0057] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A cell heating device, characterized in that, include: A moving mechanism for moving the battery cell to be heated; and A plurality of electromagnetic heating modules are sequentially arranged on the moving path of the battery core, and the positions of the heating areas generated by the plurality of electromagnetic heating modules on the battery core are different.
2. The battery cell heating device according to claim 1, wherein A plurality of the electromagnetic heating modules are disposed on opposite sides of the battery core moving path, and the plurality of the electromagnetic heating modules along the battery core moving path are disposed in pairs to form a plurality of groups.
3. The cell heating device according to claim 2, wherein The heating areas generated by the two electromagnetic heating modules in the same group on the battery core correspond to each other.
4. The cell heating device according to claim 2, wherein The plurality of electromagnetic heating modules arranged along the same side of the battery core moving path are rotated clockwise or counterclockwise at a preset angle.
5. The cell heating device according to claim 4, characterized in that, The preset angle is 5°-90°.
6. The cell heating device according to claim 1, wherein, The plurality of electromagnetic heating modules arranged along the same side of the moving path of the battery core are symmetrical about the vertical center line of the electromagnetic heating module at the middle position thereof.
7. The cell heating device according to claim 1, wherein, The electromagnetic heating module comprises a heating component, and the heating component comprises an excitation coil and an iron core arranged in the excitation coil.
8. The cell heating device according to claim 7, wherein The heating components include two, the two heating components are arranged in parallel, and the iron cores of the two heating components are connected.
9. The battery cell heating device according to any one of claims 1 to 8, characterized in that, The spacing distances between any adjacent electromagnetic heating modules on the same side of the battery core moving path are the same; And / or, the moving mechanism drives the battery cell at a constant speed.
10. The cell heating device according to claim 9, characterized in that, The moving mechanism comprises a driving mechanism and a conveyor belt transmission-connected to the driving mechanism.