CN219322604U - Electric core preheating device and hot pressing equipment - Google Patents
Electric core preheating device and hot pressing equipment Download PDFInfo
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- CN219322604U CN219322604U CN202320721822.3U CN202320721822U CN219322604U CN 219322604 U CN219322604 U CN 219322604U CN 202320721822 U CN202320721822 U CN 202320721822U CN 219322604 U CN219322604 U CN 219322604U
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Abstract
The utility model discloses a battery core preheating device and hot pressing equipment, which comprise a first conveying structure, a second conveying structure, an electromagnetic coil and a magnetizer, wherein the electromagnetic coil is arranged on the first conveying structure; the first conveying structure penetrates through the inner ring of the electromagnetic coil, and the second conveying structure is arranged on the outer side of the electromagnetic coil. In the process of transmitting the electric core to the hot pressing device by the first transmission structure and the second transmission structure, the electric core on the first transmission structure moves relative to the electromagnetic coil, and the electric core on the second transmission structure moves relative to the magnetizer, so that the electric core can cut the magnetic induction line of the magnetizer, and heat is generated in the electric core; therefore, the temperature of the battery core can be increased, the heating time in the hot pressing device is reduced or even omitted, and meanwhile, part of electromagnetic induction wires of the electromagnetic coil are guided to the second conveying structure through the arrangement of the magnetizer, so that the magnetic field of the electromagnetic coil is fully utilized, and the energy loss is reduced; therefore, the multi-scheme can improve the production efficiency of the lithium battery on the premise of low energy consumption.
Description
Technical Field
The utility model relates to the technical field of battery cell production, in particular to a battery cell preheating device and hot pressing equipment.
Background
With the development of new energy automobiles, higher requirements are put forward on the production efficiency of lithium batteries; currently, in the production process of a lithium battery, after a battery core is formed by winding or laminating positive and negative plates and a diaphragm, a hot pressing process is required to be carried out on the battery core; the hot pressing process refers to a process of putting the battery cell into a hot pressing device and flattening the battery cell after the temperature of the battery cell reaches a preset value.
The problem that prior art exists is that electric core hot press device need heat the electric core before carrying out the hot pressing earlier, and the hot pressing time of this kind of technology is longer, leads to the hot pressing efficiency of electric core to drop to some extent, is unfavorable for promoting the production speed of electric core. In order to solve the problem, a preheating process is usually set before hot pressing, and the battery cells are preheated in advance to compress the hot pressing time of the post-process, so that the production efficiency is improved.
In the actual production process, in order to ensure the productivity, more hot pressing stations are arranged to hot press the battery cells, however, the hotter equipment used in the previous process cannot always preheat a plurality of battery cells at the same time, and cannot match the productivity of a plurality of hot pressing stations in the subsequent process.
Therefore, there is a need to develop a new preheating device to improve the production efficiency of lithium batteries with low power consumption.
Disclosure of Invention
The utility model aims to provide a battery core preheating device and hot pressing equipment, which are used for solving the problem that the existing hot pressing equipment is incompatible with low energy consumption and high efficiency.
To achieve the purpose, the utility model adopts the following technical scheme:
a battery core preheating device comprises a first conveying structure, a second conveying structure and an electromagnetic coil; the first conveying structure penetrates through the inner ring of the electromagnetic coil, and the second conveying structure is arranged on the outer side of the electromagnetic coil;
a magnetizer is arranged between the electromagnetic coil and the second transmission structure; one end of the magnetizer is arranged in the inner ring of the electromagnetic coil, and the other end of the magnetizer is arranged in an extending mode along the direction close to the second conveying structure.
Optionally, the magnetizer is provided with a magnetic flux port, and the magnetic flux port extends from one end of the magnetizer to the other end of the magnetizer.
Optionally, a first included angle exists between the extending direction of one end of the magnetizer and the conveying direction of the first conveying structure; and a second included angle exists between the extending direction of the other end of the magnetizer and the conveying direction of the second conveying structure.
Optionally, the first included angle is equal to the second included angle.
Optionally, a first mounting sleeve is arranged between the first conveying structure and the electromagnetic coil; the first mounting sleeve is provided with a first through hole, and the first conveying structure penetrates through the first through hole;
wherein the electromagnetic coil is fixedly connected to the outer wall of the first mounting sleeve; one end of the magnetizer is fixedly connected to the hole wall of the first through hole.
Optionally, the device further comprises a second mounting sleeve, wherein a second through hole is formed in the second mounting sleeve, and the second conveying structure penetrates through the second through hole;
the other end of the magnetizer is fixedly connected to the hole wall of the second through hole.
The other end of the magnetizer extends to a position between the hole wall of the second through hole and the second conveying structure.
Optionally, each of the first conveying structure and the second conveying structure comprises a conveying belt, and the conveying belt is connected with a driving structure for driving the conveying belt to move;
the tray is arranged on the conveyor belt, and a battery cell installation station and a temperature sensor are arranged on the tray.
Optionally, the number of the second conveying structures is two, and the electromagnetic coil is disposed between the two second conveying structures.
Optionally, the first conveying structure and the second conveying structure are distributed along a horizontal direction.
A hot pressing device comprises a hot pressing device and the battery core preheating device.
Compared with the prior art, the utility model has the following beneficial effects:
according to the battery cell preheating device and the hot pressing equipment, the battery cells can be conveyed by the first conveying structure and the second conveying structure; in the process of transmitting the electric core to the hot pressing device by the first transmission structure and the second transmission structure, the electric core on the first transmission structure moves relative to the electromagnetic coil, so that the electric core can cut the magnetic induction lines of the electromagnetic coil, and heat is generated inside the electric core; because the electric core on the second transmission structure moves relative to the magnetizer, the electric core can cut the magnetic induction lines of the magnetizer, so that heat is generated in the electric core; therefore, the temperature of the battery core can be increased in the conveying process, so that the heating time in the hot pressing device is reduced or even omitted, and meanwhile, part of electromagnetic induction wires of the electromagnetic coil are guided to the second conveying structure through the arrangement of the magnetizer, so that the magnetic field of the electromagnetic coil is fully utilized, namely, only one electromagnetic coil is used, the equipment cost is saved, and the energy loss is reduced; therefore, the battery core preheating device and the hot pressing equipment can improve the production efficiency of the lithium battery on the premise of low energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective.
Fig. 1 is a schematic diagram of a first overall structure of a battery core preheating device according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a second overall structure of the battery core preheating device according to the embodiment of the present utility model;
fig. 3 is a schematic diagram of a third overall structure of the battery core preheating device according to the embodiment of the present utility model.
Illustration of: 10. a first conveying structure; 11. a conveyor belt; 12. a tray; 13. a battery cell mounting station; 14. a temperature sensor; 20. a second conveying structure; 30. an electromagnetic coil; 40. a magnetizer; 51. a first mounting sleeve; 511. a first through hole; 52. a second mounting sleeve; 521. and a second through hole.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 3, fig. 1 is a schematic diagram of a first overall structure of a battery cell preheating device according to an embodiment of the present utility model, fig. 2 is a schematic diagram of a second overall structure of the battery cell preheating device according to an embodiment of the present utility model, and fig. 3 is a schematic diagram of a third overall structure of the battery cell preheating device according to an embodiment of the present utility model.
Example 1
The battery cell preheating device provided by the embodiment is applied to a hot pressing process of the battery cell, and is particularly used for preheating the battery cell before hot pressing; through improving the structure of the battery core preheating device, the high-efficiency production of the battery core can be realized on the premise of low energy consumption.
As shown in fig. 1 to 3, the electric core preheating device of the present embodiment includes a first conveying structure 10, a second conveying structure 20, and an electromagnetic coil 30; the first conveying structure 10 passes through the inner ring of the electromagnetic coil 30, and the second conveying structure 20 is arranged outside the electromagnetic coil 30; wherein, the electromagnetic coil 30 is electrified through an electromagnetic heating controller, the electromagnetic heating controller can electrify the electromagnetic coil 30, the electromagnetic heating controller can rectify alternating current into direct current, and then the direct current is converted into high-frequency high-voltage electricity; when a metal body passes through the alternating magnetic field, magnetic induction lines in the alternating magnetic field are cut by the metal body, so that countless small eddy currents can be generated in the metal body, atoms in the metal body are continuously collided and rubbed, the metal body self-heats at a high speed, and the temperature of the metal body is increased; because the magnetic field generated by the electromagnetic coil 30 is an alternating magnetic field, the temperature of the battery cell is increased due to the fact that the magnetic induction lines are continuously cut through the electromagnetic coil 30 or stay in the electromagnetic coil 30.
A magnetizer 40 is arranged between the electromagnetic coil 30 and the second transmission structure 20; one end of the magnetizer 40 is disposed in the inner ring of the electromagnetic coil 30, and the other end of the magnetizer 40 is disposed to extend in a direction approaching the second conveying structure 20. The magnetic induction lines in the electromagnetic coil 30 can be guided to the second conveying structure 20 by the magnetizer 40, so that the electric core on the second conveying structure 20 can cut the magnetic induction lines, the surface of aluminum metal in the electric core generates induced eddy currents, atoms in the aluminum metal of the electric core move randomly at a high speed, and the atoms collide with each other and rub to generate heat energy.
Specifically, in the process of transferring the electric core from the first transfer structure 10 and the second transfer structure 20 to the hot pressing device, the electric core on the first transfer structure 10 moves relative to the electromagnetic coil 30, so that the electric core can cut the magnetic induction line of the electromagnetic coil 30, and heat is generated inside the electric core; because the electric core on the second conveying structure 20 moves relative to the magnetizer 40, the electric core can cut the magnetic induction lines of the magnetizer 40, so that heat is generated inside the electric core; therefore, the temperature of the battery core can be increased in the process of transmission, so that the heating time in the hot pressing device is reduced or even omitted, and meanwhile, part of electromagnetic induction wires of the electromagnetic coil 30 are guided to the second transmission structure 20 through the arrangement of the magnetizer 40, so that the magnetic field of the electromagnetic coil 30 is fully utilized, namely, only one electromagnetic coil is used, the equipment cost is saved, and the energy loss is reduced; therefore, the battery core preheating device can improve the production efficiency of the lithium battery on the premise of low energy consumption. Meanwhile, the electric core is preheated on the conveying structure before entering the hot pressing device, so that the internal stress of the electric core can be released in a thermal ageing mode, the purpose of reducing wrinkles in the electric core is achieved, and the production quality of the electric core is improved.
Further, the magnetizer 40 is provided with a magnetic flux port, and the magnetic flux port extends from one end of the magnetizer 40 to the other end of the magnetizer 40. That is, part of the magnetic induction lines in the electromagnetic coil 30 may be guided onto the second transfer structure 20 through the magnetic flux port, wherein the magnetic induction lines may be uniformly introduced onto the second transfer structure 20 on the outer side through the arrangement of the magnetic flux port, so that the cells on the second transfer structure 20 may be more stably preheated.
Further, as shown in fig. 2, a first included angle exists between the extending direction of one end of the magnetizer 40 and the conveying direction of the first conveying structure 10; a second included angle exists between the extending direction of the other end of the magnetizer 40 and the conveying direction of the second conveying structure 20; more specifically, the magnetizer 40 is U-shaped, one end of the magnetizer 40 is in a straight line shape, an angle between the magnetizer and the first conveying structure 10 is a first included angle, the other end of the magnetizer 40 is in a straight line shape, and an angle between the magnetizer and the second conveying structure 20 is a second included angle. It can be understood that, by the inclined arrangement of the magnetizer 40, the interference of the magnetizer 40 to the conveyance of the battery core is avoided on the premise that the magnetizer 40 guides the magnetic induction lines to the second conveying structure 20, so that the stability of the battery core preheating device is improved.
In this embodiment, the first angle is equal to the second angle. Specifically, the first included angle and the second included angle are both 30 degrees; in other alternative embodiments, other angles may be selected for the first angle and the second angle, and the first angle may not be equal to the second angle.
Further, a first mounting sleeve 51 is provided between the first transfer structure 10 and the electromagnetic coil 30; the first mounting sleeve 51 is provided with a first through hole 511, and the first conveying structure 10 passes through the first through hole 511; wherein the electromagnetic coil 30 is fixedly connected to the outer wall of the first mounting sleeve 51; one end of the magnetizer 40 is fixedly connected to the hole wall of the first through hole 511.
Further, the cell preheating device further includes a second mounting sleeve 52, the second mounting sleeve 52 is provided with a second through hole 521, and the second conveying structure 20 passes through the second through hole 521; the other end of the magnetizer 40 is fixedly connected to the hole wall of the second through hole 521.
Specifically, the first mounting sleeve 51 and the second mounting sleeve 52 serve to fixedly mount the magnetizer 40, and the first mounting sleeve 51 is also used to fixedly mount the electromagnetic coil 30; it can prevent the electromagnetic coil 30 from accidentally contacting the battery cell, and one end of the magnetizer 40 extends between the first mounting sleeve 51 and the first transmission structure 10, and the other end extends between the second mounting sleeve 52 and the second transmission structure 20, so that the electromagnetic induction wire can be stably guided from the electromagnetic coil 30 to the second mounting sleeve 52.
In this embodiment, as shown in fig. 3, each of the first conveying structure 10 and the second conveying structure 20 includes a conveying belt 11, and the conveying belt 11 is connected to a driving structure for driving the conveying belt 11 to move; a tray 12 is arranged on the conveyor belt 11, and a battery cell mounting station 13 and a temperature sensor 14 are arranged on the tray 12. The battery core installation station 13 is used for placing a battery core, the temperature sensor 14 can timely feed back the heating condition of the battery core, and the electromagnetic heating controller can conveniently adjust the magnetic field change condition of the electromagnetic coil 30 in time, so that the preheating temperature of the battery core is controlled. In other alternative embodiments, the transfer structure described above may comprise a transfer chain, i.e. a chain-driven manner of transferring the electrical cores.
In the present embodiment, the number of the second conveying structures 20 is two, and the electromagnetic coil 30 is disposed between the two second conveying structures 20. In other alternative embodiments, the number of the second conveying structures 20 may be three or more, and in this case, the plurality of second conveying structures 20 are circumferentially distributed along the outer wall of the electromagnetic coil 30.
As shown in fig. 3, in the present embodiment, the first conveying structures 10 and the second conveying structures 20 are distributed in the horizontal direction, that is, in the left-to-right direction, on the basis of the number of the second conveying structures 20 being two. In other alternative embodiments, the first conveying structure 10 and the second conveying structure 20 may be distributed in a vertical direction, i.e., in a top-down direction.
In summary, the battery core preheating device provided in this embodiment has the capability of simultaneously preheating a plurality of battery cores, and has the advantages of high production efficiency, low cost, low energy consumption, high stability and the like.
Example two
The hot pressing equipment provided by the embodiment comprises a hot pressing device and the battery core preheating device in the first embodiment. The ends of the first conveying structure 10 and the second conveying structure 20 are respectively provided with a hot press device, so that after the battery cells are preheated, the battery cells can be sent into the hot press devices to be hot pressed, and further the battery cells are hot pressed and formed. In the first embodiment, a specific structure and technical effects related to the cell preheating device are described, and the hot pressing apparatus of the present embodiment refers to the structure and has the technical effects as well.
In summary, the hot pressing apparatus provided in this embodiment has the capability of preheating and hot pressing multiple battery cores simultaneously, and has the advantages of high production efficiency, low cost, low energy consumption, high stability, and the like.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The battery core preheating device is characterized by comprising a first conveying structure (10), at least one second conveying structure (20) and an electromagnetic coil (30); the first conveying structure (10) penetrates through the inner ring of the electromagnetic coil (30), and the second conveying structure (20) is arranged on the outer side of the electromagnetic coil (30);
a magnetizer (40) is arranged between the electromagnetic coil (30) and the second transmission structure (20); one end of the magnetizer (40) is arranged in the inner ring of the electromagnetic coil (30), and the other end of the magnetizer (40) is arranged around the second conveying structure (20) and is used for heating the electric core conveyed on the second conveying structure (20).
2. The cell preheating device according to claim 1, wherein the magnetic conductor (40) is provided with a magnetic flux port penetrating from one end of the magnetic conductor (40) to the other end of the magnetic conductor (40).
3. A cell preheating device according to claim 1, wherein a first angle is formed between the direction of extension of one end of the magnetic conductor (40) and the direction of conveyance of the first conveying structure (10); a second included angle exists between the extending direction of the other end of the magnetizer (40) and the conveying direction of the second conveying structure (20).
4. A cell preheating device according to claim 3, wherein said first angle is equal to said second angle.
5. A cell preheating arrangement according to claim 1, wherein a first mounting sleeve (51) is arranged between the first conveying structure (10) and the electromagnetic coil (30); the first mounting sleeve (51) is provided with a first through hole (511), and the first conveying structure (10) penetrates through the first through hole (511);
wherein the electromagnetic coil (30) is fixedly connected to the outer wall of the first mounting sleeve (51); one end of the magnetizer (40) is fixedly connected to the hole wall of the first through hole (511).
6. The cell preheating device according to claim 1, further comprising a second mounting sleeve (52), wherein the second mounting sleeve (52) is provided with a second through hole (521), and wherein the second conveying structure (20) passes through the second through hole (521);
wherein the other end of the magnetizer (40) is fixedly connected to the hole wall of the second through hole (521).
7. A cell preheating device according to claim 1, wherein the first conveying structure (10) and the second conveying structure (20) each comprise a conveyor belt (11), the conveyor belt (11) being connected to a drive structure for driving the conveyor belt (11) to move;
the solar cell is characterized in that a tray (12) is mounted on the conveyor belt (11), and a cell mounting station (13) and a temperature sensor (14) are arranged on the tray (12).
8. A cell preheating device according to claim 1, wherein the number of the second transfer structures (20) is two, and the electromagnetic coil (30) is arranged between the two second transfer structures (20).
9. A cell preheating device according to claim 8, wherein the first conveying structure (10) and the second conveying structure (20) are distributed in a horizontal direction.
10. A hot press apparatus comprising a hot press device and a cell preheating device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721822.3U CN219322604U (en) | 2023-04-04 | 2023-04-04 | Electric core preheating device and hot pressing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721822.3U CN219322604U (en) | 2023-04-04 | 2023-04-04 | Electric core preheating device and hot pressing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219322604U true CN219322604U (en) | 2023-07-07 |
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ID=87031709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320721822.3U Active CN219322604U (en) | 2023-04-04 | 2023-04-04 | Electric core preheating device and hot pressing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219322604U (en) |
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2023
- 2023-04-04 CN CN202320721822.3U patent/CN219322604U/en active Active
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