Heating mechanism and battery cell baking equipment

Abstract

The utility model discloses a heating mechanism and battery cell baking equipment, and relates to the technical field of battery cell baking, and the heating mechanism comprises a heating jacking assembly and a heating pressing assembly. The heating jacking assembly is provided with a jacking plane, and the jacking plane is used for supporting the battery cell. The heating and pressing assembly and the jacking plane are oppositely arranged, the heating and pressing assembly comprises a first driving part and a heating plate, the heating plate is provided with a first electromagnetic coil, and the first electromagnetic coil is used for generating a first alternating magnetic field. And the heating and pressing assembly drives the heating plate to be close to the battery cell located on the jacking plane, so that the first electromagnetic coil heats the battery cell. The technical scheme provided by the utility model aims to solve the problem that the baking period of the battery cell is long.

Description

Technical Field

[0001] This utility model relates to the field of battery cell baking technology, and in particular to a heating mechanism and battery cell baking equipment. Background Technology

[0002] During the production of lithium-ion batteries, if moisture is present in the cell, the lithium ions react with the water to generate gas, leading to increased internal pressure and reduced effective capacity, thus affecting the cell's performance and safety. Therefore, cell baking equipment is needed to evaporate the moisture inside the cell to a safe level.

[0003] Existing battery cell baking equipment mainly adopts the whole heating tube cavity heating baking method. In the whole heating tube cavity heating baking method, the battery cell is placed in the baking chamber, and the entire baking chamber is heated by the heating system to evaporate the moisture in the battery cell.

[0004] However, this method has a long baking cycle, usually taking several hours to complete, which affects production efficiency. Utility Model Content

[0005] The main purpose of this invention is to propose a heating mechanism and a battery cell baking device, which aims to solve the problem of long battery cell baking cycles.

[0006] To achieve the above objectives, this utility model proposes a heating mechanism for baking battery cells, the heating mechanism comprising:

[0007] A heating lifting assembly, wherein the heating lifting assembly has a lifting plane for supporting the battery cell; and

[0008] A heating and pressing assembly is disposed opposite to the lifting plane. The heating and pressing assembly includes a first driving member and a heating plate. The heating plate is provided with a first electromagnetic coil, which is used to generate a first alternating magnetic field.

[0009] The heating and pressing assembly drives the heating plate close to the battery cell located on the lifting plane, so that the first electromagnetic coil heats the battery cell.

[0010] In one embodiment, the heating plate includes a first plate and a second plate connected to each other, with a mounting cavity formed between the first plate and the second plate, and the first electromagnetic coil is laid in the mounting cavity and is parallel to the lifting plane.

[0011] In one embodiment, the heating and pressing assembly further includes a mounting base plate and a wire guide rod, and the output end of the first drive member is provided with a first drive shaft, which is connected to one side of the mounting base plate;

[0012] One end of the wire guide rod is connected to the mounting base plate, and the other end is connected to the heating plate;

[0013] The first driving component drives the first transmission shaft, which in turn drives the mounting base plate and the wire guide rod to bring the heating plate closer to the battery cell.

[0014] In one embodiment, multiple wire guide rods and multiple heating plates are provided, with each wire guide rod corresponding to one heating plate.

[0015] In one embodiment, the heating and pressing assembly further includes a plurality of first guide rods disposed on the mounting base plate and surrounding the first drive shaft.

[0016] In one embodiment, the heating lifting assembly includes a second driving member and a lifting plate, the lifting plate having the lifting plane, and the output end of the second driving member having a second transmission shaft connected to the lifting plate;

[0017] The second driving member drives the second transmission shaft, which in turn moves the lifting plate so that the battery cell located on the lifting plane is close to the heating plate.

[0018] In one embodiment, the heating lifting assembly further includes a plurality of second guide rods disposed on the lifting plate and surrounding the second drive shaft.

[0019] In one embodiment, the lifting plate is provided with a second electromagnetic coil, which is used to generate a second alternating magnetic field to heat and keep the battery cell warm.

[0020] In one embodiment, the lifting plate is provided with a mounting groove and a mounting block, the second electromagnetic coil is laid in the mounting groove, and the mounting block presses the second electromagnetic coil tightly into the mounting groove.

[0021] This utility model also proposes a battery cell baking device, which includes the above-mentioned heating mechanism.

[0022] The technical solution of this utility model uses a heating lifting assembly to support the battery cell. A first driving component in the heating pressing assembly drives a heating plate to move relative to the lifting plane, causing a first electromagnetic coil to contact the battery cell. Simultaneously, the first electromagnetic coil is energized, generating a first alternating magnetic field. Magnetic field lines penetrate the battery cell and generate eddy currents, thereby efficiently converting electrical energy into heat energy, achieving rapid heating and baking of the battery cell. This significantly shortens the baking cycle and improves production efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of an embodiment of the heating mechanism provided by this utility model;

[0025] Figure 2 for Figure 1 Another structural schematic diagram of the heating mechanism;

[0026] Figure 3 for Figure 1 Exploded view of the central heating plate;

[0027] Figure 4 for Figure 1 Exploded view of the central lifting plate;

[0028] Figure 5 A schematic diagram of an embodiment of the battery cell baking equipment provided by this utility model.

[0029] Explanation of icon numbers:

[0030] 100. Heating mechanism; 1. Heating lifting assembly; 11. Second driving component; 111. Second transmission shaft; 12. Lifting plate; 121. Lifting plane; 122. Second electromagnetic coil; 123. Mounting slot; 124. Mounting block; 13. Second guide rod; 2. Heating pressing assembly; 21. First driving component; 211. First transmission shaft; 22. Heating plate; 221. First plate body; 222. Second plate body; 223. Mounting cavity; 224. First electromagnetic coil; 23. Mounting base plate; 24. Wire guide rod; 25. First guide rod; 200. Battery cell baking equipment.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] During the production of lithium-ion batteries, if moisture is present in the cell, the lithium ions react with the water to generate gas, leading to increased internal pressure and reduced effective capacity, thus affecting the cell's performance and safety. Therefore, cell baking equipment is needed to evaporate the moisture inside the cell to a safe level.

[0036] Existing battery cell baking equipment mainly adopts the whole heating tube cavity heating baking method. In the whole heating tube cavity heating baking method, the battery cell is placed in the baking chamber, and the entire baking chamber is heated by the heating system to evaporate the moisture in the battery cell.

[0037] However, this method has a long baking cycle, usually taking several hours to complete, which affects production efficiency.

[0038] The main purpose of this utility model is to propose a heating mechanism 100 and a battery cell baking device 200, which aims to solve the problem of long battery cell baking cycle.

[0039] Please see Figures 1 to 4In one embodiment of this utility model, the heating mechanism 100 is used to bake the battery cell. The heating mechanism 100 includes a heating lifting assembly 1 and a heating pressing assembly 2. The heating lifting assembly 1 has a lifting plane 121 for supporting the battery cell. The heating pressing assembly 2 is disposed opposite to the lifting plane 121 and includes a first driving member 21 and a heating plate 22. The heating plate 22 has a first electromagnetic coil 224 for generating a first alternating magnetic field. The heating pressing assembly 2 drives the heating plate 22 to approach the battery cell located on the lifting plane 121 so that the first electromagnetic coil 224 heats the battery cell.

[0040] The heating mechanism 100 of this invention supports the battery cell through a heating lifting assembly 1. The first driving component 21 in the heating pressing assembly 2 drives the heating plate 22 to move relative to the lifting plane 121, causing the first electromagnetic coil 224 to contact the battery cell. Simultaneously, the first electromagnetic coil 224 is energized, generating a first alternating magnetic field. Magnetic field lines penetrate the battery cell and generate eddy currents, thereby efficiently converting electrical energy into heat energy and achieving rapid heating and baking of the battery cell. This significantly shortens the baking cycle and improves production efficiency.

[0041] Please see Figure 3 In one embodiment, the heating plate 22 includes a first plate 221 and a second plate 222 connected to each other, with a mounting cavity 223 formed between the first plate 221 and the second plate 222. A first electromagnetic coil 224 is laid in the mounting cavity 223 and is parallel to the lifting plane 121.

[0042] In this embodiment, to avoid the first electromagnetic coil 224 being directly pressed, the heating plate 22 is provided with a first plate 221 and a second plate 222 connected to each other. The first electromagnetic coil 224 is placed between the first plate 221 and the second plate 222. The first plate 221 and the second plate 222 can be made of materials with excellent insulation properties to reduce the impact on electromagnetic induction, such as insulating ceramics.

[0043] Understandably, the first electromagnetic coil 224 is laid in the mounting cavity 223. The first electromagnetic coil 224 is first wound to form a loop, which can be circular, elliptical or rectangular, and then placed in the mounting cavity 223.

[0044] Optionally, a first cooling assembly is also provided within the mounting cavity 223. This first cooling assembly is used to reduce the operating temperature of the first electromagnetic coil 224, ensuring that the temperature of the first electromagnetic coil 224 remains within a preset safe range. This not only effectively prevents performance degradation or shortened lifespan of the first electromagnetic coil 224 due to excessive temperature but also improves the stability and reliability of the heating process. The first cooling assembly can cool the first electromagnetic coil 224 using a circulating cooling pipe filled with coolant.

[0045] Please see Figure 1 and Figure 2 In one embodiment, the heating and pressing assembly 2 further includes a mounting base plate 23 and a wire guide rod 24. The output end of the first driving member 21 is provided with a first drive shaft 211, which is connected to one side of the mounting base plate 23. One end of the wire guide rod 24 is connected to the mounting base plate 23, and the other end is connected to the heating plate 22. The first driving member 21 drives the first drive shaft 211, thereby moving the mounting base plate 23 and the wire guide rod 24, so that the heating plate 22 is closer to the battery cell.

[0046] In this embodiment, the heating and pressing assembly 2 further includes a mounting base plate 23 and a wire guide rod 24. The mounting base plate 23 serves as a support and transmission structure for the heating and pressing assembly 2. It can not only withstand the power from the first transmission shaft 211, but also transmit the power to the heating plate 22 through the wire guide rod 24, so that the heating plate 22 can move relative to the lifting plane 121. The wire guide rod 24 is internally provided with wires, which are connected to the first electromagnetic coil 224 to generate alternating current, so that the first electromagnetic coil 224 heats the battery cell.

[0047] Please see Figure 1 and Figure 2 In one embodiment, multiple wire guide rods 24 are provided, and multiple heating plates 22 are also provided, with each wire guide rod 24 corresponding to a heating plate 22.

[0048] In this embodiment, in order to further improve working efficiency, multiple wire guide rods 24 and heating plates 22 are provided, and each heating plate 22 can heat the battery cell.

[0049] Please see Figure 1 and Figure 2 In one embodiment, the heating and pressing assembly 2 further includes a plurality of first guide rods 25, which are disposed on the mounting base plate 23 and surround the first drive shaft 211.

[0050] In this embodiment, four first guide holes are provided in a cross-shaped arrangement. The first drive hole is located at the center of the four first guide holes. Each guide hole is provided with a first guide rod 25. The first guide shaft is mounted on the mounting base plate 23 and surrounds the first drive shaft 211, thereby ensuring that the heating plate 22 can move stably.

[0051] Please see Figure 1 and Figure 2 In one embodiment, the heating lifting assembly 1 includes a second driving member 11 and a lifting plate 12. The lifting plate 12 has a lifting plane 121, and the output end of the second driving member 11 has a second transmission shaft 111, which is connected to the lifting plate 12. The second driving member 11 drives the second transmission shaft 111, causing the lifting plate 12 to move, so that the battery cell located on the lifting plane 121 is close to the heating plate 22.

[0052] In this embodiment, the lifting plate 12 is driven by the second driving component 11, allowing the battery cell to move closer to the heating plate 22. Furthermore, in actual use, the battery cell is typically transported along a transport channel. When the lifting plane 121 can move, it can lift the battery cell from the transport channel, allowing it to leave the channel for heating. After heating is complete, it lowers back into position, returning the battery cell to the transport channel for further transport, thus achieving an automated heating process for the battery cell.

[0053] Please see Figure 1 and Figure 2 In one embodiment, the heating lifting assembly 1 further includes a plurality of second guide rods 13, which are disposed on the lifting plate 12 and surround the second drive shaft 111.

[0054] Understandably, the second guide rod 13 is also used to assist in the movement of the lifting plate 12. The structure of the second guide rod 13 is similar to that of the first guide rod 25, and will not be described in detail here.

[0055] Please see Figure 4 In one embodiment, the lifting plate 12 is provided with a second electromagnetic coil 122, which is used to generate a second alternating magnetic field to heat and keep the battery cell warm.

[0056] In this embodiment, to further improve the heating efficiency of the battery cell, a second electromagnetic coil 122 is provided on the lifting plate 12. After being energized, the second electromagnetic coil 122 generates a second alternating magnetic field to heat the battery cell. At this time, the battery cell is heated simultaneously from both sides.

[0057] Please see Figure 1 and Figure 2In one embodiment, the lifting plate 12 is provided with a mounting groove 123 and a mounting block 124. The second electromagnetic coil 122 is laid in the mounting groove 123, and the mounting block 124 presses the second electromagnetic coil 122 into the mounting groove 123.

[0058] In this embodiment, the second electromagnetic coil 122 is installed in the mounting slot 123 by the mounting block 124, so as to avoid the second electromagnetic coil 122 directly contacting the battery cell and reduce damage to the battery cell.

[0059] Optionally, a second cooling component can also be provided in the mounting slot 123. The second cooling component is used to reduce the operating temperature of the second electromagnetic coil 122. The structure and function of the second cooling component are the same as those of the first cooling component, and will not be described in detail here.

[0060] Please see Figure 5 The present invention also proposes a battery cell baking device 200, which includes a heating mechanism 100. The specific structure of the heating mechanism 100 is as described in the above embodiments. Since the battery cell baking device 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] In this embodiment, the battery cell baking equipment 200 can be equipped with multiple heating mechanisms 100. The multiple heating mechanisms 100 work together to maintain the battery cell within a preset temperature range during transportation, thereby improving the baking effect.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A heating mechanism for baking battery cells, characterized in that, The heating mechanism includes: A heating lifting assembly, wherein the heating lifting assembly has a lifting plane for supporting the battery cell; and A heating and pressing assembly is disposed opposite to the lifting plane. The heating and pressing assembly includes a first driving member and a heating plate. The heating plate is provided with a first electromagnetic coil, which is used to generate a first alternating magnetic field. The heating and pressing assembly drives the heating plate close to the battery cell located on the lifting plane, so that the first electromagnetic coil heats the battery cell.

2. The heating mechanism as described in claim 1, characterized in that, The heating plate includes a first plate and a second plate that are connected to each other. A mounting cavity is formed between the first plate and the second plate. The first electromagnetic coil is laid in the mounting cavity and is parallel to the lifting plane.

3. The heating mechanism as described in claim 1, characterized in that, The heating and pressing assembly also includes a mounting base plate and a wire guide rod. The output end of the first drive unit is provided with a first transmission shaft, which is connected to one side of the mounting base plate. One end of the wire guide rod is connected to the mounting base plate, and the other end is connected to the heating plate; The first driving component drives the first transmission shaft, which in turn drives the mounting base plate and the wire guide rod to bring the heating plate closer to the battery cell.

4. The heating mechanism as described in claim 3, characterized in that, Multiple wire guide rods are provided, and multiple heating plates are also provided, with each wire guide rod corresponding to one heating plate.

5. The heating mechanism as described in claim 3, characterized in that, The heating and pressing assembly also includes a plurality of first guide rods, which are disposed on the mounting base plate and surround the first drive shaft.

6. The heating mechanism as described in claim 1, characterized in that, The heating lifting assembly includes a second driving member and a lifting plate. The lifting plate is provided with the lifting plane. The output end of the second driving member is provided with a second transmission shaft, which is connected to the lifting plate. The second driving member drives the second transmission shaft, which in turn moves the lifting plate so that the battery cell located on the lifting plane is close to the heating plate.

7. The heating mechanism as described in claim 6, characterized in that, The heating and lifting assembly also includes a plurality of second guide rods, which are disposed on the lifting plate and surround the second drive shaft.

8. The heating mechanism as described in claim 6, characterized in that, The lifting plate is equipped with a second electromagnetic coil, which is used to generate a second alternating magnetic field to heat and keep the battery cell warm.

9. The heating mechanism as described in claim 8, characterized in that, The lifting plate is provided with a mounting groove and a mounting block. The second electromagnetic coil is laid in the mounting groove, and the mounting block presses the second electromagnetic coil tightly into the mounting groove.

10. A battery cell baking device, characterized in that, The battery cell baking equipment includes the heating mechanism as described in any one of claims 1 to 9.

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