Battery cell heating device and battery cell production equipment

Abstract

The utility model relates to the technical field of battery manufacturing, and provides a battery cell heating device and battery cell production equipment, the battery cell heating device comprises a mounting frame with two mounting seats, a battery cell jig and at least two groups of heating components, each group of heating components comprises two coil components, the coil components can form a magnetic circuit to carry out electromagnetic heating on a battery cell, and the coil components are arranged on the mounting frame. Different groups of heating assemblies can form heating areas with different sizes; one of the two coil assemblies of the same group of heating assemblies is connected to one of the mounting seats, and the other one of the two coil assemblies of the same group of heating assemblies is connected to the other mounting seat, so that the multi-station battery cell heating device is realized, and a battery cell can be placed at one group of heating assemblies with a proper heating area for heating according to the size of the battery cell during heating; and during model changing, the battery cell can be selectively placed at a proper heating assembly for heating according to the size of the battery cell to be heated, so that the compatibility of the battery cell heating device to the battery cells with different sizes is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery manufacturing, in particular to a battery core heating device and battery core production equipment. Background Art

[0002] In the battery manufacturing process, in order to ensure production efficiency and product quality, the battery cells need to be heated at appropriate stages, such as drying or hot pressing. In some technologies, efficient and uniform heating of the battery cells is achieved through electromagnetic heating technology. However, the currently commonly used electromagnetic heating devices are used in conjunction with heated objects of fixed structure / appearance size, so the structure of the electromagnetic heating device is also relatively fixed. In the field of battery manufacturing, due to actual production needs, battery cells of different sizes are usually produced. Therefore, the current battery heating devices are used to heat battery cells in the battery manufacturing process. There is a problem of size incompatibility, which leads to reduced heating efficiency or poor heating uniformity. It is difficult to meet the heating requirements of the relevant production links for the battery cells, affecting product quality. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery core heating device that is compatible with battery cores of different sizes.

[0004] The utility model also provides a battery core production device having the battery core heating device.

[0005] According to the first aspect of the utility model, the battery cell heating device comprises a mounting frame, a battery cell fixture and at least two groups of heating components, the mounting frame comprises two mounting seats arranged opposite to each other along a first direction; each group of the heating components comprises two coil components arranged at intervals along the first direction, a heating space is formed between the two coil components in the same group of the heating components, the coil components comprise a magnetic conductive member provided with a connecting end and a coil connected to the connecting end, the connecting ends of the magnetic conductive members of the two coil components in the heating components correspond to each other, and can form a magnetic circuit to electromagnetically heat the battery cell located in the heating space, and different groups of the heating components can form heating areas of different sizes; each group of the heating components is spaced between the sides of the two mounting seats facing each other, one of the two coil components in the same group of the heating components is connected to one of the mounting seats, and the other is connected to the other mounting seat; the battery cell fixture is used to carry the battery cell to be heated in the heating space.

[0006] The battery cell heating device of the embodiment of the utility model has at least the following beneficial effects: multiple groups of heating components are connected to the two mounting seats, and different groups of heating components form heating areas of different sizes, realizing a multi-station battery cell heating device. Therefore, in actual production, when heating, the battery cell can be placed in a group of heating components with a heating area of ​​appropriate size according to the size of the battery cell, and when changing the model, the battery cell can also be placed in a suitable heating component for heating according to the size of the battery cell to be heated, thereby improving the compatibility of the battery cell heating device with different sizes of battery cells, thereby effectively reducing the number of times the heating device needs to be replaced when the battery cell is changed. The appropriate heating area also effectively guarantees the heating quality of the battery cell, which is conducive to improving product quality.

[0007] According to the battery core heating device of some embodiments of the present invention, the coil assemblies of the heating components of different groups have coils of the same size but different numbers, so that the heating components of different groups form heating areas of different sizes.

[0008] According to the electric core heating device of some embodiments of the present utility model, the coil assembly of at least one group of the heating components includes at least two coils.

[0009] According to some embodiments of the present invention, the battery core heating device comprises at least two groups of the heating components, including at least two groups of the following heating components:

[0010] The first group of said heating assemblies, said coil assembly comprising one said coil;

[0011] The second group of heating components, the coil assembly includes two coils;

[0012] In the third group of heating components, the coil component includes four coils, and the four coils are distributed in a rectangular shape or in a row.

[0013] According to some embodiments of the utility model, the battery cell heating device includes three groups of heating components, namely a first group of heating components, a second group of heating components, and a third group of heating components. The three groups of heating components are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0014] According to some embodiments of the battery core heating device of the present invention, the coil assemblies of the heating components of different groups have coils of different sizes but the same number, or the coil assemblies of the heating components of different groups have coils of different sizes and different numbers, so that the heating components of different groups form heating areas of different sizes.

[0015] According to some embodiments of the battery cell heating device of the present invention, the mounting frame further includes an adjustment mechanism, the adjustment mechanism is connected to at least one of the mounting seats, and the adjustment mechanism is used to drive at least one of the mounting seats to move along a first direction to adjust the distance between the two mounting seats along the first direction.

[0016] According to the electric core heating device of some embodiments of the present utility model, a mounting portion for connecting the coil assembly is correspondingly provided on one side of the mounting seat facing each other, and the coil assembly is detachably connected to the mounting portion.

[0017] The battery cell production equipment according to the second aspect of the utility model comprises a processing device and the battery cell heating device described in the first aspect of the utility model, and the upstream station and / or downstream station of the processing device is provided with the battery cell heating device.

[0018] The battery cell production equipment of the embodiment of the utility model has at least the following beneficial effects: the battery cell heating device of the first embodiment mentioned above is arranged at the upstream station and / or downstream station of the processing device, which can improve the compatibility of the battery cell size and reduce the number of times the battery cell heating device needs to be stopped to replace when the battery cell is changed, so that the battery cell processing device can work continuously, which is beneficial to improving the efficiency of the battery cell production equipment.

[0019] According to some embodiments of the utility model, the battery cell production equipment also includes a transfer device, which includes a driving mechanism and a clamping mechanism connected to the driving mechanism, the clamping mechanism is used to take out the battery cell, the driving mechanism is used to drive the clamping mechanism to move relative to the battery cell jig, and is used to transfer the battery cell to the battery cell jig and place it in any of the heating spaces, and is also used to move the battery cell out of the battery cell jig.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a battery core heating device according to an embodiment;

[0023] Figure 2 for Figure 1 A front view of the illustrated embodiment;

[0024] Figure 3 It is a schematic diagram of the structure of multiple groups of heating components in the battery core heating device of some embodiments;

[0025] Figure 4 for Figure 3 A top view of the embodiment shown.

[0026] Reference numerals:

[0027] Mounting frame 100; mounting seat 110;

[0028] Heating assembly 200; first group of heating assembly 201; second group of heating assembly 202; third group of heating assembly 203;

[0029] Coil assembly 210; magnetic conductive member 211; connecting end 212; coil 213; heating space 214;

[0030] Battery cell 300; large surface 310; small size battery cell 300a; medium size battery cell 300b; large size battery cell 300c. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Cell heating plays an important role in the battery manufacturing process and is used in multiple links in the production process, such as cell hot pressing, drying, cell activation, etc. Appropriate heating can ensure the drying of electrodes, cell activation, and effective control of battery thermal management, which is conducive to improving battery performance and safety. However, the production demand for cells of various sizes means that the heating process needs to replace the matching heating device as the cell is changed, resulting in reduced heating efficiency or poor heating uniformity, making it difficult to meet the heating requirements of the cells in various production links, which will ultimately affect product quality.

[0037] The utility model proposes a battery cell heating device that is compatible with battery cells of different sizes and a battery cell production device having the battery cell heating device. The following is an introduction to the embodiments of the present application in conjunction with the accompanying drawings of the specification:

[0038] refer to Figure 1 and Figure 2 The battery cell heating device of the first embodiment of the utility model comprises a mounting frame 100, a battery cell fixture and at least two sets of heating components 200. The mounting frame 100 is used to install the heating components 200, the battery cell fixture is used to carry the battery cell 300 to be heated, and the heating components 200 are used to perform electromagnetic heating on the battery cell 300 on the battery cell fixture to achieve efficient and uniform heating effect of the battery cell 300.

[0039] The mounting frame 100 includes two mounting seats 110 arranged opposite to each other along a first direction, and each group of heating components 200 is arranged between two sides of the two mounting seats 110 facing each other.

[0040] Each group of heating components 200 includes two coil components 210 spaced apart along a first direction, and a heating space 214 is formed between the two coil components 210 in the same group of heating components 200. The battery cell fixture is used to carry the battery cell 300 to be heated in the heating space 214. The coil component 210 includes a magnetic conductive member 211 provided with a connecting end 212 and a coil 213 connected to the connecting end 212. The connecting ends 212 of the magnetic conductive members 211 of the two coil components 210 in the heating component 200 correspond to each other and can form a magnetic circuit to electromagnetically heat the battery cell 300 located in the heating space 214.

[0041] refer to Figure 3 and Figure 4 Different groups of heating components 200 can form heating areas of different sizes. One of the two coil components 210 of the same group of heating components 200 is connected to one of the mounting seats 110, and the other is connected to the other mounting seat 110. The heating area can be understood as the area of ​​the surface of the battery core 300 that can be covered by the magnetic field generated by the electromagnetic coil 213. In other words, after the electromagnetic coil 213 is powered on, the current passing through the coil 213 will generate a high-speed changing magnetic field. When the battery core 300 is located in the heating space 214, when the magnetic field lines pass through the battery core 300, eddy currents will be generated in the metal material of the battery core 300 to make the metal heat up by itself, thereby achieving a heating effect. The heating area of ​​the heating component 200 can be characterized by the area on the battery core 300 that is passed by the magnetic lines of force.

[0042] In the embodiment of the present application, the battery cell 300 is placed in the heating space 214 with the large surface 310 facing the coil 213, so that the battery cell 300 can be exposed to the magnetic field over a large area, and the electromagnetic induction principle can be better utilized, so that the battery cell 300 can better absorb electromagnetic energy and convert it into heat energy, thereby improving the heating efficiency. At the same time, it is also conducive to uniform heat distribution, avoiding local overheating or uneven heating of the battery cell 300. Battery cells 300 of different sizes have different large surface 310 areas. For small-sized battery cells 300, if a heating component 200 with too large a heating area is used, it will cause energy waste. Therefore, heating components 200 with heating areas of different sizes are provided on the mounting frame 100, and heating areas of different sizes can match battery cells 300 of corresponding sizes.

[0043] Therefore, in actual production, when heating, the battery cell 300 can be placed in a group of heating components 200 with a suitable heating area for heating according to the size of the battery cell 300. For example, the heating component 200 with a smaller heating area can be used to perform electromagnetic heating on the battery cell 300 in the production of a small-sized battery cell 300a, while the heating component 200 with a larger heating area can be used to heat the battery cell 300 in the production of a large-sized battery cell 300, thereby realizing a multi-station battery cell heating device. When changing the model, the battery cell 300 can also be placed in a suitable heating component 200 for heating according to the size of the battery cell 300 to be heated, thereby improving the compatibility of the battery cell heating device with different-sized batteries 300, thereby effectively reducing the number of times the heating device needs to be replaced when the battery cell 300 is changed. The appropriate heating area also effectively guarantees the heating quality of the battery cell 300, which is conducive to improving product quality.

[0044] The heating area of ​​the electromagnetic coil 213 is affected by factors such as power supply and the structural design of the heating component 200. Therefore, different heating areas can be achieved by configuring the above factors in different groups of heating components 200. For example:

[0045] For example, the magnitude of the current supplied to the coil 213 will affect the heating intensity and area. A larger current will form a wider heating area. Supplying different magnitudes of current to the coils 213 in different heating components 200 can form heating areas of different sizes.

[0046] For another example, the structural design of the heating component 200, including factors such as the size of the coil 213, the number of turns of the coil 213, and the number of coils 213, will all affect the heating area of ​​the heating component 200. The larger the size of the coil 213, the larger the range covered by the magnetic lines of force, and thus the larger the heating area will generally be. Configuring coils 213 of different sizes in different heating components 200 can form heating areas of different sizes; a coil 213 with more turns generally has a larger heating area, and a larger number of electromagnetic coils 213 will form a larger heating area.

[0047] Therefore, without considering the current size, only the three factors of the coil 213 size, the number of turns of the coil 213, and the number of coils 213 in the structural design of the heating component 200 are considered, and at least one coil 213 with different factors is configured in different heating components 200, for example:

[0048] When two of the above three factors are the same, configuring another factor differently can form heating areas of different sizes. For example, when the number of coils 213 and the size of coils 213 are the same, configuring the coils 213 to have different numbers of turns can form heating areas of different sizes; or, when the size of coils 213 and the number of turns of coils 213 are the same, configuring coils 213 of different numbers can form heating areas of different sizes; or, when the number of coils 213 and the number of turns of coils 213 are the same, configuring coils 213 of different sizes can form heating areas of different sizes; in some embodiments of the present application, the coil assemblies 210 of different groups of heating components 200 have coils 213 of the same size but different numbers, so that different groups of heating components 200 form heating areas of different sizes. Or, in some embodiments, the coil assemblies 210 of different groups of heating components 200 have coils 213 of different sizes but the same number. The number of turns of the coils 213 is also the same. Coils 213 of the same size can be easily and uniformly produced, and the heating component 200 has a simple structural design and is easy to identify. Different configurations of the heating area can be achieved simply by configuring different quantities, thereby being compatible with battery cells 300 of different sizes.

[0049] Of course, two of the above three factors may be different, or all three factors may be different, and different sizes of heating areas can be achieved through reasonable calculation and configuration. For example, if one of the factors is the same and the other two factors are increased, a wider heating area can be obtained relative to the heating component 200 with smaller two factors; or, if all three factors are increased, a wider heating area can be obtained relative to the heating component 200 with smaller three factors. In some embodiments, the coil assemblies 210 of the heating assemblies 200 of different groups have coils 213 of different sizes and different numbers, wherein the number of turns of the coils 213 is also the same. In this way, the heating assemblies 200 of different groups form heating areas of different sizes.

[0050] The above only lists some examples of how to achieve different heating areas for different heating components 200. Since the heating area of ​​the heating component 200 is affected by many factors and there are many variable factors, they are not listed here exhaustively.

[0051] refer to Figures 1 to 4In some embodiments of the battery core heating device, the coil assemblies 210 of different groups of heating components 200 have coils 213 of the same size but different numbers, wherein the coil assemblies 210 of at least one group of heating components 200 include at least two coils 213, for example, two, three, four or more, and the number of coils 213 in the heating components 200 of this group may be more than the number of coils 213 in the coil assemblies 210 in the heating components 200 of other groups, or may be less than the number of coils 213 in the coil assemblies 210 in the heating components 200 of other groups.

[0052] refer to Figure 3 and Figure 4 In some embodiments, when the size and number of turns of the coil 213 are the same, the at least two groups of heating components 200 include at least two groups of the following heating components 200:

[0053] The first set of heating components 201, the coil component 210 includes a coil 213;

[0054] The second set of heating components 202, the coil assembly 210 includes two coils 213;

[0055] The third group of heating components 203, the coil component 210 includes four coils 213, and the four coils 213 are distributed in a rectangular shape or in a row.

[0056] The first group of heating components 201 can be used for heating small-sized battery cells 300. In the second group of heating components 202, the coil component 210 formed by the combination of two coils 213 can form a heating area equivalent to twice the heating area of ​​the first group of heating components 201, and can be used for heating larger-sized battery cells 300. In the third group of heating components 203, the combination of four coils 213 further increases the heating area, so that it is suitable for heating larger-sized battery cells 300 compared with the second group of heating components 202. The heating component 200 composed of the coil component 210 with four coils 213 distributed in a row can be used for long-shaped battery cells 300 with a long length direction and a large length-to-width ratio. The length direction of the battery cells 300 is consistent with the arrangement direction of a row of battery cells 300. The placement of the battery cells 300 can correspond to each coil 213, so as to make full use of the heating area of ​​the third group of heating components 203. The heating component 200 composed of the coil component 210 with four coils 213 distributed in a rectangular shape can be used for square or shaped battery cells 300 with a small length-to-width ratio. By using any two of the above-mentioned heating components 200 , compatibility with at least two sizes of battery cells 300 can be achieved.

[0057] refer to Figures 1 to 4In some embodiments, the cell heating device includes three groups of heating components 200, which are the first group of heating components 201, the second group of heating components 202, and the third group of heating components 203, respectively, to achieve compatibility with at least three sizes of cells 300. Further, the three groups of heating components 200 can be arranged at intervals along the second direction, and the second direction is perpendicular to the first direction. Thus, the cells 300 can be loaded and unloaded for each heating component 200 on the side of the two mounting seats 110 along the third direction, and the third direction is perpendicular to the second direction and the first direction. For example, a material transfer mechanism such as a manipulator provided on one side of the mounting seat 110 along the third direction can be used to load and unload the three heating components 200, so that the matching heating components 200 can be selected conveniently.

[0058] It should be noted that the “two sizes of battery cells 300” in the “compatibility with at least two sizes of battery cells 300 can be achieved” or the “three sizes of battery cells 300” in the “compatibility with at least three sizes of battery cells 300 can be achieved” in the above description are used to distinguish battery cells 300 with large size differences, such as small-sized battery cells 300a, medium-sized battery cells 300b and large-sized battery cells 300c, and each type of battery cell 300 may include battery cells 300 of multiple sizes. The battery cells 300 to which the above-mentioned first group of heating components 201, the second group of heating components 202, and the third group of heating components 203 are respectively applicable are not limited to a certain size, but a size range. For example, the above-mentioned first group of heating components 201 is applicable to battery cells 300 that are slightly larger than the size of the coil 213 of the first group of heating components 201, that is, the projection of the coil 213 of the first group of heating components 201 on the surface of the battery cell 300 facing the coil 213 can cover most of the area of ​​the surface. If the coil 213 of the first group of heating components 201 can only cover a small area on the surface (for example, the coverage area does not exceed 50%), it means that the size of the battery cell 300 is larger than the size range of the battery cell 300 applicable to the first group of heating components 201, and other groups of heating components 200 can be selected for heating. The second group of heating components 202 and the third group of heating components 203 are similar, and the battery cells 300 they are applicable to are not limited to a certain size, but a size range. Therefore, according to some embodiments of the battery cell heating device of the present utility model, the mounting frame 100 also includes an adjustment mechanism, which is connected to at least one mounting seat 110, and the adjustment mechanism is used to drive at least one mounting seat 110 to move along the first direction to adjust the spacing between the two mounting seats 110 along the first direction.

[0059] In some embodiments of the battery core heating device, a mounting portion for connecting the coil assembly 210 is correspondingly provided on one side of the mounting seat 110 facing each other, and the coil assembly 210 is detachably connected to the mounting portion. For example, the coil assembly 210 may be provided with a connecting piece, and the connecting piece is connected to the magnetic conductive piece 211, and the connecting piece is connected to the mounting portion by screw locking to achieve a detachable connection; or, a connecting piece, so that the corresponding mounting assembly can be disassembled and replaced as needed. Therefore, more heating assemblies 200 with different heating areas than the number of heating stations can be configured, and the electromagnetic coils 213 in different groups of heating assemblies 200 share the same mounting portion to achieve rotation use on the mounting seat 110. Part or all of the heating assemblies 200 can be replaced according to actual production needs, and heating assemblies 200 with multiple heating areas can be rotated at limited stations to avoid idleness of the heating assemblies 200. In specific implementation, a separate electromagnetic coil 213 module structure suitable for each battery cell 300 can be designed, and an idle installation part can be selected for use during the production cycle of the corresponding battery cell 300 without affecting the heating work of other groups of installation components.

[0060] In some embodiments, the mounting frame 100 may further include an adjustment mechanism, which is connected to at least one mounting seat 110, and the adjustment mechanism is used to drive at least one mounting seat 110 to move along the first direction to adjust the spacing between the two mounting seats 110 along the first direction, thereby facilitating the installation and removal of the two coil assemblies 210 of the heating assembly 200 on the mounting seat 110 for easy replacement. Also, in some cases, adjusting the spacing between the mounting seats 110 can also adjust the spacing between the electromagnetic coils 213 in the same group of heating assemblies 200, which helps to adjust the electromagnetic coils 213 to a better spacing range and improve the practicality of the device.

[0061] According to the battery cell production equipment of the second aspect embodiment of the utility model, it includes a processing device and a battery cell heating device of the first aspect embodiment, and the upstream station and / or downstream station of the processing device are provided with a battery cell heating device. The battery cell heating device of the first aspect embodiment is arranged at the upstream station and / or downstream station of the processing device, which can improve the compatibility of the size of the battery cell 300 and reduce the number of times the battery cell 300 needs to be stopped to replace the battery cell heating device when the battery cell 300 is changed, so that the battery cell 300 processing device can work continuously, which is conducive to improving the efficiency of the battery cell production equipment. The battery cell production equipment of the embodiment of the present application can be a lithium battery equipment used in the production and manufacturing process of lithium-ion batteries, can be a special machine including stand-alone equipment and integrated equipment, or can be a complete line that basically realizes fully automated production of a certain process, wherein the processing can be a device used for processing in one of the links, for example, it can be a hot pressing device, and the battery cell 300 can be preheated before hot pressing by arranging the above-mentioned battery cell heating device at the previous station of the hot pressing device.

[0062] In some embodiments, the battery cell production equipment also includes a transferring device, which includes a driving mechanism and a clamping mechanism connected to the driving mechanism, the clamping mechanism is used to take out the battery cell 300, and the driving mechanism is used to drive the clamping mechanism to move relative to the battery cell jig, and is used to transfer the battery cell 300 to the battery cell jig and place it in any heating space 214, and is also used to move the battery cell 300 from the battery cell jig to realize mechanized loading and unloading of the battery cell 300.

[0063] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A battery core heating device, characterized in that: include: The mounting frame comprises two mounting seats arranged opposite to each other along a first direction; At least two groups of heating components, each group of the heating components comprises two coil components spaced apart along the first direction, a heating space is formed between the two coil components in the same heating component, the coil component comprises a magnetic conductive member provided with a connecting end and a coil connected to the connecting end, the connecting ends of the magnetic conductive members of the two coil components in the heating component correspond to each other, and can form a magnetic circuit to electromagnetically heat the electric core located in the heating space, and different groups of heating components can form heating areas of different sizes; each group of the heating components is spaced apart between the two sides of the mounting seats facing each other, one of the two coil components of the same heating component is connected to one of the mounting seats, and the other is connected to the other mounting seat; The battery cell fixture is used to carry the battery cell to be heated in the heating space.

2. The electric core heating device according to claim 1, characterized in that: The coil assemblies of the heating components of different groups have coils of the same size but different numbers, so that the heating components of different groups form heating areas of different sizes.

3. The electric core heating device according to claim 2, characterized in that: The coil assembly of at least one set of the heating assemblies includes at least two coils.

4. The electric core heating device according to claim 3, characterized in that: The at least two groups of heating components include at least two groups of the following heating components: The first group of said heating assemblies, said coil assembly comprising one said coil; The second group of heating components, the coil assembly includes two coils; In the third group of heating components, the coil component includes four coils, and the four coils are distributed in a rectangular shape or in a row.

5. The electric core heating device according to claim 4, characterized in that: The heating components include three groups, namely, a first group, a second group, and a third group. The three groups are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

6. The electric core heating device according to claim 1, characterized in that: The coil assemblies of the heating components of different groups have coils of different sizes but the same number, or the coil assemblies of the heating components of different groups have coils of different sizes and different numbers, so that the heating components of different groups form heating areas of different sizes.

7. The electric core heating device according to claim 1, characterized in that: The mounting frame further comprises an adjustment mechanism, wherein the adjustment mechanism is connected to at least one of the mounting seats, and the adjustment mechanism is used to drive at least one of the mounting seats to move along a first direction so as to adjust the distance between two of the mounting seats along the first direction.

8. The electric core heating device according to any one of claims 1 to 7, characterized in that: A mounting portion for connecting the coil assembly is correspondingly arranged on one side of the mounting seats facing each other, and the coil assembly is detachably connected to the mounting portion.

9. A battery cell production device, characterized in that: It comprises a processing device and a battery core heating device as claimed in any one of claims 1 to 8, wherein the battery core heating device is provided at an upstream station and / or a downstream station of the processing device.

10. The battery cell production equipment according to claim 9, characterized in that: It also includes a transfer device, which includes a driving mechanism and a clamping mechanism connected to the driving mechanism, the clamping mechanism is used to take out the battery cell, the driving mechanism is used to drive the clamping mechanism to move relative to the battery cell fixture, and is used to transfer the battery cell to the battery cell fixture and place it in any of the heating spaces, and is also used to remove the battery cell from the battery cell fixture.

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