CN115307386A - Battery core heating method and heating device - Google Patents
Battery core heating method and heating device Download PDFInfo
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- CN115307386A CN115307386A CN202210840327.4A CN202210840327A CN115307386A CN 115307386 A CN115307386 A CN 115307386A CN 202210840327 A CN202210840327 A CN 202210840327A CN 115307386 A CN115307386 A CN 115307386A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 126
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application relates to the technical field of battery manufacturing, and discloses a battery core heating method and a heating device, wherein electromagnetic fields formed by a plurality of electromagnetic coils act on the side surfaces of a battery core to form a plurality of heating zones with different temperatures, so that the high-temperature zone moves to a plurality of positions on the side surfaces of the battery core relative to the battery core, and the purpose of heating different areas of the battery core can be achieved, thereby realizing efficient drying treatment, and the problem of diaphragm wrinkles caused by overlarge temperature difference of the positions of the battery core can be avoided due to the movement of the high-temperature zone relative to the battery core. Compared with a drying furnace heating mode, the heating method and the heating device provided by the embodiment of the application can improve the heating and drying efficiency, effectively save the heating time and reduce the energy consumption.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to a battery core heating method and a heating device.
Background
The moisture control of the lithium battery in the production and manufacturing process directly affects the performance of the battery, so the battery needs to be dried for many times in the production and manufacturing process, for example, before rolling pole pieces, after core formation and before casing, the semi-finished product needs to be dried. At present, in the related art, the drying treatment is realized by adopting a drying furnace heating mode, but the drying furnace has the problem of long heating time, so that the production rhythm is difficult to improve in the actual production process, the production efficiency is influenced, and the heating electric energy consumption of the drying furnace is large, thereby being not beneficial to energy conservation, consumption reduction and production cost reduction.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a cell heating method which can heat a cell so as to realize effective drying treatment and reduce heating time. The application also provides a heating device.
According to the embodiment of the first aspect of the application, the cell heating method comprises the following steps: a plurality of electromagnetic coils are arranged beside the side surface of the battery cell, and the polarities of the adjacent electromagnetic coils are different; enabling electromagnetic fields formed by the electromagnetic coils to act on the side face of the battery cell to form a plurality of heating areas with different temperatures, wherein the plurality of heating areas comprise a high-temperature area and a low-temperature area, and the temperature of the high-temperature area is higher than that of the low-temperature area; moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell.
The battery core heating method provided by the embodiment of the first aspect of the application at least has the following beneficial effects: the core entering the magnetic circuit is able to generate a current, i.e. an eddy current, which opposes the magnetic field variations of the magnetic circuit. When the eddy current flows in the electric core, heat loss is generated due to ohm's law, and the heat of the eddy current can play a role in heating and drying the electric core. In the heating method of the embodiment of the application, the adjacent electromagnetic coils have different polarities, and a passage is established in the middle of the battery core for the eddy current. The eddy current on the passage can heat the middle area of the battery core to form a high-temperature area with higher relative temperature, and the rest positions have lower relative temperature, so that the high-temperature area moves relative to the battery core to reach a plurality of positions on the side surface of the battery core, the purpose of heating different areas of the battery core can be achieved, and efficient drying treatment is realized. It can be understood that, compared with a drying oven heating mode, the heating method of the embodiment of the application can effectively save heating time and reduce energy consumption.
According to the cell heating method of some embodiments of the present application, the method of providing a plurality of electromagnetic coils beside the side surface of the cell includes corresponding each of the electromagnetic coils to a different position of the side surface of the cell.
According to the cell heating method of some embodiments of the present application, the plurality of electromagnetic coils are respectively provided at side portions of both side surfaces in a thickness direction of the cell.
According to the cell heating method of some embodiments of the present application, 4 electromagnetic coils are respectively arranged at the side of two side surfaces of the cell in the thickness direction, and the 4 electromagnetic coils are arranged in a rectangular shape.
According to the cell heating method of some embodiments of the present application, the method of moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell comprises: enabling each electromagnetic coil to move relative to the battery cell along a plane where the side face of the battery cell is located; or the battery core moves relative to the electromagnetic coil along a plane where the side surface of the battery core is located; or the battery core and the electromagnetic coils are both made to move along a plane where the side faces of the battery core are located, and relative movement exists between the battery core and each electromagnetic coil.
According to the cell heating method of some embodiments of the present application, the method for moving each electromagnetic coil relative to the cell along the plane where the side surface of the cell is located includes: enabling each electromagnetic coil to synchronously move in a set range according to a set path; or enabling each electromagnetic coil to do irregular movement within a set range.
According to the cell heating method of some embodiments of the present application, the method of moving the cell relative to the electromagnetic coil along a plane in which the side surface of the cell is located includes: enabling the battery cell to move according to a set path in a set range; or enabling the battery cell to do irregular movement within a set range.
According to the cell heating method of some embodiments of the present application, a method of providing a plurality of electromagnetic coils beside a side surface of a cell includes: the electromagnetic coil comprises a plurality of electromagnetic coils which are arranged in a set mode along a set direction, the polarities of the adjacent electromagnetic coils are different, and the arrangement mode of the electromagnetic coils is configured as follows: when the battery cell moves along the set direction for a set stroke, the high-temperature regions formed among the plurality of electromagnetic coils act on different positions of the side surface of the battery cell.
According to the cell heating method of some embodiments of the present application, the method of moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell comprises: and enabling the side surface of the battery cell to be arranged along the set direction, and enabling the battery cell to move along the set direction at the side of the electromagnetic coils for a set stroke, so that the high-temperature regions formed among the electromagnetic coils act on different positions of the side surface of the battery cell.
The heating device comprises a carrying platform, an electromagnetic coil and a driving mechanism, wherein the carrying platform is used for carrying a battery cell to be heated; the electromagnetic coils are provided with a plurality of electromagnetic coils and are arranged on one side or two sides of the carrying platform, the polarities of the adjacent electromagnetic coils are different, and the electromagnetic coils are suitable for applying electromagnetic fields to different positions on the side surface of the battery cell respectively; the driving mechanism is used for driving the carrying platform and/or the electromagnetic coil to move along the plane where the side face of the battery cell is located, so that the battery cell and the electromagnetic coil generate relative movement.
The heating device of the embodiment of the second aspect of the present application has at least the following advantages: through set up a plurality of solenoid at the microscope carrier lateral part for produce the electromagnetic field, thereby arrange electric core on the microscope carrier in and get into this electromagnetic field and produce the vortex in electric core, play the effect of heating electric core. The adjacent electromagnetic coils have different polarities, a passage is established in the middle of the battery core for eddy current, the eddy current on the passage can heat the middle area of the battery core to form a high-temperature area with higher relative temperature, and the rest positions have lower relative temperature, so that the high-temperature area moves relative to the battery core to reach a plurality of positions on the side surface of the battery core, the purpose of heating different areas of the battery core can be achieved, and efficient drying treatment is realized. It can be understood that, compared with the heating mode of the drying oven, the heating device of the embodiment of the application can effectively save the heating time and reduce the energy consumption.
According to the heating device of some embodiments of the present application, the plurality of electromagnetic coils respectively correspond to different positions of the side surface of the battery cell, wherein:
the driving mechanism is connected to the carrying platform and used for driving the carrying platform to move relative to the electromagnetic coil along a plane where the side surface of the battery cell is located;
or the driving mechanism is connected to the electromagnetic coil and used for driving the electromagnetic coil to move relative to the carrier along the plane where the side surface of the battery core is located.
According to the heating device of some embodiments of the present application, the driving mechanism is connected to the carrier and configured to drive the carrier to move along a set direction, and a plurality of electromagnetic coils are arranged in a set manner along the set direction, and polarities of adjacent electromagnetic coils are different; the electromagnetic coils are arranged in a mode that: when the battery cell moves along the set direction for a set stroke, the positions among the electromagnetic coils correspond to different positions of the side surface of the battery cell.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
Fig. 1 is a schematic diagram of a cell heating method according to an embodiment of the present application;
fig. 2 is a schematic diagram of 4 positions for heating the cell by the heating method shown in fig. 1;
FIG. 3 is a schematic view of a distribution of heating zones for 4 heating positions according to an embodiment of the present application;
fig. 4 is a schematic diagram of a cell heating method according to another embodiment of the present application;
fig. 5 is a schematic diagram of a cell heating method according to another embodiment of the present application;
FIG. 6 is a schematic structural diagram of a heating device according to an embodiment of the present application;
fig. 7 is a side view of fig. 6.
Reference numerals:
a battery cell 100, a high temperature region 101, and a low temperature region 103;
the device comprises a frame 400, a driving mechanism 500, a first linear module 501, a second linear module 502 and a bracket 503.
Detailed Description
The conception and the resulting technical effects of the present application will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present application belong to the protection scope of the present application.
In the description of the embodiments of the present application, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", and the like are based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but not to indicate or imply that the referred apparatus or device must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In the description of the embodiments of the present application, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it can be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present application, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "within" is referred to, it is understood that the number is included. References to "first" and "second" are to be understood as distinguishing technical features and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the battery manufacturing process, the traditional mode is to heat and dry the semi-manufactured goods electricity core in the battery production process through the drying oven to get rid of moisture, but in the middle of the in-service use, the drying oven area is big, and heating time is long, causes slowing down of production beat, and the drying oven need consume a large amount of electric energy, causes the increase of battery manufacturing cost. The embodiment of the application provides a battery core heating method and a heating device, which can effectively improve the heating efficiency, shorten the time for heating and drying the battery core, and reduce the energy consumption.
Referring to fig. 1 to 4, a cell heating method according to an embodiment of the first aspect of the present application includes:
a plurality of electromagnetic coils 200 are arranged beside the side surface of the battery cell 100, and the polarities of the adjacent electromagnetic coils 200 are different;
enabling an electromagnetic field formed by the electromagnetic coils 200 to act on the side surface of the battery core 100 to form a plurality of high-temperature heating areas, wherein the plurality of heating areas comprise a high-temperature area 101 and a low-temperature area 103, and the temperature of the high-temperature area 101 is higher than that of the low-temperature area 103;
the high-temperature zone 101 is moved relative to the battery cell 100 to a plurality of positions on the side of the battery cell 100.
In the method of the above embodiment, the electric core 100 is heated and dried by electromagnetic heating, and it can be understood that electromagnetic heating is implemented by using an electromagnetic induction principle, an alternating current whose direction is constantly changed is generated by an alternating current through a coil, and an alternating current (i.e., an eddy current) is generated inside a conductor in the alternating current, and the joule effect of the eddy current increases the temperature of the conductor, thereby implementing heating. The conductor generates heat, and the direct heating mode is adopted, so that the heat conversion rate is high, the heating efficiency is high, the energy consumption is low, and the direct heating method is widely applied to industrial production.
However, it should be noted that, general electromagnetic heating can only heat the edge portion of the heated body, and the temperature difference between the middle portion and the edge is large, so that if a conventional electromagnetic heating manner is applied to the battery production process to heat the battery core 100, it will be very unfavorable for the separator material constituting the battery core 100, and the temperature difference often causes wrinkles of the separator of the battery core 100, which affects the performance of the battery. In the cell heating method according to the embodiment of the application, the magnetic circuit is established beside the cell 100 through the plurality of electromagnetic coils 200, the cell 100 entering the magnetic circuit can generate an eddy current resisting the change of the magnetic field of the magnetic circuit, and the adjacent electromagnetic coils 200 have different polarities, so that a passage is established in the middle of the cell 100 for the eddy current. The eddy current on the passage can heat the middle area of the battery core 100 to form a high-temperature area 101 with higher relative temperature, and the temperatures of other positions are lower relatively, so that the high-temperature area 101 moves relative to the battery core 100 to reach a plurality of positions on the side surface of the battery core 100, and the purpose of heating different areas of the battery core 100 can be achieved, thereby realizing efficient drying, avoiding the problem of diaphragm wrinkles caused by large temperature difference among all parts of the battery core 100, and ensuring the performance of the battery. Therefore, compared with a drying furnace heating mode, the heating method provided by the embodiment of the application can effectively shorten the heating time and reduce the energy consumption, so that the drying efficiency of the battery cell 100 and the production cost of the battery are improved. Because the semi-finished product battery core needs to be heated and dried for multiple times in the whole manufacturing process of the battery, the heating method provided by the embodiment of the application can effectively shorten the time required by heating and drying each time, thereby being beneficial to optimizing the production beat and improving the production efficiency of the battery.
Referring to fig. 1 and fig. 4, in the method for heating a battery cell of the above embodiment, the method for providing a plurality of electromagnetic coils 200 beside the side surface of the battery cell 100 includes that each electromagnetic coil 200 corresponds to a different position on the side surface of the battery cell 100, so that the plurality of electromagnetic coils 200 act on the same battery cell 100 at the same time, and the structure is compact, and when a relative motion occurs between the electromagnetic coils 200 and the battery cells 100, the high temperature region 101 can be moved to multiple positions of the battery cell 100 for heating. In some embodiments, the plurality of electromagnetic coils 200 may be respectively disposed beside two side surfaces in the thickness direction of the battery cell 100, so as to improve the heating and drying efficiency. For example, in the cell heating method according to the embodiment of the present application, 4 electromagnetic coils 200 are respectively disposed at the side of two side surfaces in the thickness direction of the cell 100, where the 4 electromagnetic coils 200 are arranged in a rectangular shape, and thus, the 4 electromagnetic coils 200 at one side of the cell 100 respectively correspond to different positions on the side surfaces of the cell 100, and are particularly suitable for heating and drying the square cell 100, and the 4 electromagnetic coils 200 arranged in a rectangular shape respectively correspond to four corners of the square cell 100, so that the high temperature region 101 is controllably moved to a plurality of different portions of the cell 100 for heating through the motion control between the cell 100 and the electromagnetic coils 200, which is beneficial to improving the hot efficiency.
In the cell heating method of the above-described embodiment, the method of moving the high-temperature zone 101 relative to the battery cell 100 to a plurality of positions on the side surface of the battery cell 100 includes: each electromagnetic coil 200 is moved relative to the battery core 100 along the plane where the side surface of the battery core 100 is located (refer to fig. 1 to 3), or the battery core 100 is moved relative to the electromagnetic coil 200 along the plane where the side surface of the battery core 100 is located (refer to fig. 4), or both the battery core 100 and the electromagnetic coil 200 are moved along the plane where the side surface of the battery core 100 is located, and there is relative movement between the battery core 100 and each electromagnetic coil 200. Thereby achieving a change in the position of the high temperature region 101. The method for moving each electromagnetic coil 200 relative to the battery cell 100 along the plane where the side surface of the battery cell 100 is located includes: the electromagnetic coils 200 are moved synchronously along a predetermined path within a predetermined range. Therefore, the high temperature region 101 can be controllably moved to a plurality of different portions of the battery cell 100 for heating, for example, referring to fig. 1 to fig. 3, where a movement path of each electromagnetic coil 200 is indicated by a dashed frame, an arrow indicates a movement direction, a position of the high temperature region 101 is indicated by a dashed circle, and a direction of clockwise movement is shown in the drawing, in practical implementation, a counterclockwise movement may also be adopted, where fig. 2 shows a comparison schematic diagram of a state where the electromagnetic coil 200 moves to 4 relative positions with respect to the battery cell 100, fig. 3 shows a position change of a heating region corresponding to the 4 position states in fig. 2, and each electromagnetic coil 200 moves according to a rectangular path 201, so that the high temperature region 101 reaches a plurality of portions of the battery cell 100 along the rectangular path 201 for heating, for a square battery cell 100, the high temperature region 101 moves along the rectangular path 201 and can adapt to the shape of the square battery cell 100, so that the overall heating is uniform, and the problem that a diaphragm is wrinkled due to an excessive local temperature difference is avoided, thereby realizing rapid heating and drying of the whole battery cell 100.
In some embodiments, according to actual production and heating requirements, each electromagnetic coil 200 may also move along a path with another shape (e.g., a curved path, a circular path, an elliptical path, or another polygonal path) within a set range, or each electromagnetic coil 200 moves irregularly within a set range, or each battery cell 100 moves along a set path within a set range, or each battery cell 100 moves irregularly within a set range, and the high-temperature region 101 can also move relative to the battery cell 100 to reach multiple positions on the side surface of the battery cell 100, where the set range is within a range extending from the side portion of the battery cell 100, so as to implement heating and drying of multiple different positions of the battery cell 100.
In the cell heating method of some embodiments, the method of providing a plurality of electromagnetic coils 200 beside the side surface of the battery cell 100 may further be: the plurality of electromagnetic coils 200 are arranged in a set manner along a set direction, the polarities of the adjacent electromagnetic coils 200 are different, and the arrangement manner of the electromagnetic coils 200 is configured such that, when the battery cell 100 moves in the set direction for a set stroke, the high temperature region 101 formed between the plurality of electromagnetic coils 200 acts on different positions of the side surface of the battery cell 100. For example, referring to fig. 5, with the illustrated orientation as a reference, the plurality of electromagnetic coils 200 are arranged from left to right, and have the electromagnetic coils 200 arranged in a staggered manner in the upper and lower directions, for example, every 2 electromagnetic coils 200 are in one group, and 2 electromagnetic coils 200 in each group are aligned in the upper and lower directions, wherein a plurality of groups of first coils and a plurality of groups of second coils are included, each of the first coils and each of the second coils are arranged in a spaced manner in the left and right directions, and the distance between two electromagnetic coils 200 in the first coils in the upper and lower directions is smaller than the distance between two electromagnetic coils 200 in the second coils, so as to form the plurality of electromagnetic coils 200 arranged in a staggered manner, and therefore, the electromagnetic coils 200 arranged in the left and right directions can be heated at a plurality of different positions to form the high temperature region 101, so that different positions of the battery cells 100 located at the side can be heated.
Based on the above arrangement of the electromagnetic coil 200, the method for moving the high-temperature region 101 relative to the battery cells 100 to a plurality of positions on the side surfaces of the battery cells 100 includes: the side surfaces of the battery cells 100 are arranged in a set direction, and the battery cells 100 are moved in the set direction by a set stroke at the side of the electromagnetic coils 200, so that the high-temperature regions 101 formed between the plurality of electromagnetic coils 200 act on different positions of the side surfaces of the battery cells 100. For example, referring to fig. 5, the battery cell 100 passes through the high temperature regions 101 at different positions from left to right when moving beside the plurality of electromagnetic coils 200 arranged in the above manner, and therefore, for a single battery cell 100, in a set stroke of the above movement, a plurality of positions of the battery cell 100 can be respectively heated by the plurality of high temperature regions 101, so as to achieve complementation of the high temperature regions 101, and thus, the movement of the high temperature regions 101 with respect to the battery cell 100 can also be achieved, which is beneficial to rapidly and uniformly heating and drying the entire battery cell 100, and improves the production efficiency.
Therefore, through the cell heating method provided by the embodiment of the application, efficient heating and drying can be performed on the cell 100, and energy consumption can be saved.
Referring to fig. 6 and 7, a heating device provided in the second embodiment of the present application includes a carrier, an electromagnetic coil 200, and a driving mechanism 500, where the carrier is configured to carry a battery cell 100 to be heated, so as to facilitate heating and drying of the battery cell 100. The heating device is provided with a plurality of electromagnetic coils 200 and is arranged on one side or two sides of the carrying platform, and the adjacent electromagnetic coils 200 have different polarities and are suitable for applying electromagnetic fields to different positions on the side surface of the battery cell 100 respectively; the driving mechanism 500 is used to drive the carrier and/or the electromagnetic coil 200 to move along the plane where the side surface of the battery cell 100 is located, so as to generate a relative motion between the battery cell 100 and the electromagnetic coil 200.
Therefore, the electromagnetic coils 200 are arranged on the side of the carrier and used for generating an electromagnetic field, so that the battery cell 100 arranged on the carrier enters the electromagnetic field and generates an eddy current in the battery cell 100, thereby heating the battery cell 100. The adjacent electromagnetic coils 200 have different polarities, and a passage is established in the middle of the battery core 100 for the eddy current, the eddy current on the passage can heat the middle area of the battery core 100 to form a high-temperature area 101 with a relatively high temperature, and the rest positions have relatively low temperatures, so that the high-temperature area 101 moves relative to the battery core 100 to reach multiple positions on the side surface of the battery core 100, and the purpose of heating different areas of the battery core 100 can be achieved, thereby realizing efficient drying treatment.
It can be understood that the heating device of the embodiment of the present application can enable the battery cell 100 to generate heat by the electromagnetic field generated by the electromagnetic coil 200, which is a direct heating manner, and is more efficient, effective in saving heating time, and reducing energy consumption compared with other manners (e.g., a drying oven heating manner).
In the heating apparatus of some embodiments, the plurality of electromagnetic coils 200 respectively correspond to different positions of the side surface of the battery cell 100, wherein:
the driving mechanism 500 is connected to the carrier, and is configured to drive the carrier to move relative to the electromagnetic coils 200 along a plane where the side surfaces of the electrical core 100 are located, so that the electrical core 100 can move relative to the high-temperature region 101 formed by the multiple electromagnetic coils 200, and the high-temperature region 101 can heat multiple positions of the electrical core 100, where the driving mechanism 500 may be implemented by selecting a multi-axis manipulator commonly used in industrial production;
alternatively, referring to fig. 6, the driving mechanism 500 is connected to the electromagnetic coil 200, and is configured to drive the electromagnetic coil 200 to move relative to the carrier along a plane where the side surface of the battery cell 100 is located, so that the high temperature region 101 can move to multiple positions of the battery cell 100 and heat the battery cell; wherein, actuating mechanism 500 can select the multi-axis manipulator commonly used in industrial production to realize, guarantees between the actuating mechanism 500 of microscope carrier both sides to avoid the motion to interfere. For example, referring to fig. 6 and 7, the heating device includes a frame 400, a carrier is fixedly connected to a support 503, the carrier is suitable for placing the battery cell 100, and two wide surfaces of the battery cell 100 face the up-down direction, a driving mechanism 500 is respectively disposed on the upper side and the lower side of the carrier, the driving mechanism 500 includes a first linear module 501, a second linear module 502, and a support 503, wherein the first linear module 501 and the second linear module 502 are conventional linear modules and respectively have a rail seat and a sliding seat, the rail seats of the two are vertically staggered and parallel to the side surface of the battery cell 100, the rail seat of the first linear module 501 is connected to the frame 400 and extends along a first direction, the rail seat of the second linear module 502 is connected to the sliding seat of the first linear module 501 and extends along a second direction, the first direction and the second direction are perpendicular to each other, the support 503 is connected to the sliding seat of the second linear module 502, and the plurality of electromagnetic coils 200 are connected to the support 503, so that the first linear module 501 can drive the second linear module 502 to move along the second direction, and the plurality of the electromagnetic coils 200 move relative to the battery cell 100.
In the heating device of other embodiments, the driving mechanism 500 is connected to the carrier for driving the carrier to move along a set direction, the plurality of electromagnetic coils 200 are arranged in a set manner along the set direction, and the polarities of the adjacent electromagnetic coils 200 are different; the electromagnetic coil 200 is arranged in such a manner that: when the battery cell 100 is moved in the set direction by the set stroke, positions between the plurality of electromagnetic coils 200 correspond to different positions of the side surface of the battery cell 100.
Specifically, the electromagnetic coil 200 in the heating device described above may adopt the arrangement shown in fig. 5: referring to fig. 5, with the illustrated orientation as a reference, the plurality of electromagnetic coils 200 are arranged from left to right, and have the electromagnetic coils 200 arranged in a staggered manner in the upper and lower directions, for example, every 2 electromagnetic coils 200 are in one group, and the 2 electromagnetic coils 200 in each group are aligned in the upper and lower directions, wherein the electromagnetic coils include a plurality of groups of first coils and a plurality of groups of second coils, each of the first coils and each of the second coils are arranged in a left-right direction at intervals, and a distance between two electromagnetic coils 200 in the first coils in the upper and lower directions is smaller than a distance between two electromagnetic coils 200 in the second coils, so as to form the plurality of electromagnetic coils 200 arranged in a staggered manner, and therefore, the electromagnetic coils 200 arranged in the left and right directions can be heated at a plurality of different positions to form the high temperature zone 101, so that different positions of the battery cells 100 located at the side can be heated. Therefore, in the process that the driving mechanism 500 drives the carrier to move in the left-right direction, the high-temperature regions 101 formed by the multiple groups of electromagnetic coils 200 can pass through, and the high-temperature regions 101 corresponding to different positions of the battery cell 100 pass through, so that after the battery cell 100 moves for a certain stroke, the multiple positions of the battery cell 100 can be heated by the high-temperature regions 101, and thus, the efficient drying effect is achieved.
The heating device of the above embodiment is suitable for executing the cell heating method of the first aspect embodiment of the present application, so that the high temperature region 101 formed by the cell 100 and the plurality of electromagnetic coils 200 can move relatively, the high temperature region 101 can reach a plurality of positions of the cell 100, and the drying efficiency of the cell 100 is improved.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (12)
1. The cell heating method is characterized by comprising the following steps:
a plurality of electromagnetic coils are arranged beside the side surface of the battery cell, and the polarities of the adjacent electromagnetic coils are different;
enabling electromagnetic fields formed by the electromagnetic coils to act on the side face of the battery core to form a plurality of heating areas with different temperatures, wherein the heating areas comprise a high-temperature area and a low-temperature area, and the temperature of the high-temperature area is higher than that of the low-temperature area;
moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell.
2. The cell heating method of claim 1, wherein disposing a plurality of electromagnetic coils alongside the side surfaces of the cells comprises corresponding each electromagnetic coil to a different location on the side surfaces of the cells.
3. The cell heating method according to claim 2, wherein a plurality of electromagnetic coils are respectively disposed beside two side surfaces of the cell in the thickness direction.
4. The cell heating method according to claim 3, wherein 4 electromagnetic coils are respectively arranged beside two side faces of the cell in the thickness direction, and the 4 electromagnetic coils are arranged in a rectangular shape.
5. The cell heating method of claim 2, wherein moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell comprises:
enabling each electromagnetic coil to move relative to the battery cell along a plane where the side face of the battery cell is located;
or the battery core moves relative to the electromagnetic coil along a plane where the side surface of the battery core is located;
or the battery core and the electromagnetic coils are both made to move along a plane where the side faces of the battery core are located, and relative movement exists between the battery core and each electromagnetic coil.
6. The cell heating method of claim 5, wherein the step of moving each electromagnetic coil relative to the cell along a plane in which a side surface of the cell lies comprises: enabling each electromagnetic coil to synchronously move in a set range according to a set path; or enabling each electromagnetic coil to do irregular movement within a set range.
7. The cell heating method of claim 5, wherein the step of moving the cell relative to the electromagnetic coil along a plane in which the side surface of the cell lies comprises: enabling the battery cell to move according to a set path in a set range; or enabling the battery cell to do irregular movement within a set range.
8. The cell heating method of claim 2, wherein the step of arranging a plurality of electromagnetic coils beside the side surface of the cell comprises: the electromagnetic coil comprises a plurality of electromagnetic coils which are arranged in a set mode along a set direction, the polarities of the adjacent electromagnetic coils are different, and the arrangement mode of the electromagnetic coils is configured as follows: when the battery cell moves along the set direction for a set stroke, the high-temperature regions formed among the plurality of electromagnetic coils act on different positions of the side surface of the battery cell.
9. The cell heating method of claim 8, wherein moving the high temperature zone relative to the cell to a plurality of locations on a side of the cell comprises: and enabling the side surface of the battery cell to be arranged along the set direction, and enabling the battery cell to move along the set direction at the side of the electromagnetic coils for a set stroke, so that the high-temperature regions formed among the electromagnetic coils act on different positions of the side surface of the battery cell.
10. Heating device, characterized by, includes:
the carrying platform is used for carrying the battery cell;
the electromagnetic coils are arranged on one side or two sides of the carrying platform, have different polarities and are suitable for applying electromagnetic fields to different positions of the side surface of the battery cell respectively;
and the driving mechanism is used for driving the carrying platform and/or the electromagnetic coil to move along the plane where the side surface of the battery cell is located, so that the battery cell and the electromagnetic coil generate relative movement.
11. The heating device of claim 10, wherein a plurality of the electromagnetic coils respectively correspond to different positions of the side surface of the battery cell, wherein:
the driving mechanism is connected to the carrying platform and used for driving the carrying platform to move relative to the electromagnetic coil along a plane where the side surface of the battery cell is located;
or the driving mechanism is connected to the electromagnetic coil and used for driving the electromagnetic coil to move relative to the carrier along the plane where the side surface of the battery core is located.
12. The heating device according to claim 10, wherein the driving mechanism is connected to the carrier for driving the carrier to move along a set direction, and a plurality of electromagnetic coils are arranged in a set manner along the set direction, and the polarities of the adjacent electromagnetic coils are different; the electromagnetic coils are arranged in a mode that: when the battery cell moves along the set direction for a set stroke, the positions among the electromagnetic coils correspond to different positions of the side surface of the battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840327.4A CN115307386A (en) | 2022-07-18 | 2022-07-18 | Battery core heating method and heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840327.4A CN115307386A (en) | 2022-07-18 | 2022-07-18 | Battery core heating method and heating device |
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| CN115307386A true CN115307386A (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210840327.4A Pending CN115307386A (en) | 2022-07-18 | 2022-07-18 | Battery core heating method and heating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115892957A (en) * | 2022-11-30 | 2023-04-04 | 海目星激光科技集团股份有限公司 | Battery cell conveying device and battery cell processing equipment |
| CN116916483A (en) * | 2023-09-08 | 2023-10-20 | 海目星激光科技集团股份有限公司 | Electromagnetic heating equipment, control method and control device |
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| CN206490132U (en) * | 2017-02-20 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery pole piece heat drying apparatus |
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| JP2004228068A (en) * | 2002-11-26 | 2004-08-12 | Tokyo Denki Univ | Electromagnetic induction heating device |
| CN1802044A (en) * | 2005-11-11 | 2006-07-12 | 河北工业大学 | Width adjustable and temperature controllable transverse magnetic flux induction heating apparatus |
| CN206490132U (en) * | 2017-02-20 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery pole piece heat drying apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115892957A (en) * | 2022-11-30 | 2023-04-04 | 海目星激光科技集团股份有限公司 | Battery cell conveying device and battery cell processing equipment |
| CN116916483A (en) * | 2023-09-08 | 2023-10-20 | 海目星激光科技集团股份有限公司 | Electromagnetic heating equipment, control method and control device |
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Address after: 518000 301, Building B, Kemlong Science Park, Guansheng 5th Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen, Guangdong Province (one photo and multiple address enterprises) Applicant after: Hymson Laser Technology Group Co., Ltd. Address before: 518000 No. 26, 101 Ring Road south of Guanzi street, Longhua District, Shenzhen, Guangdong Applicant before: SHENZHEN HYMSON LASER INTELLIGENT EQUIPMENTS Co.,Ltd. |
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Application publication date: 20221108 |