CN116528415B - Battery cell heating assembly, battery cell heating device and battery cell hot pressing equipment - Google Patents
Battery cell heating assembly, battery cell heating device and battery cell hot pressing equipment Download PDFInfo
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- CN116528415B CN116528415B CN202310801513.1A CN202310801513A CN116528415B CN 116528415 B CN116528415 B CN 116528415B CN 202310801513 A CN202310801513 A CN 202310801513A CN 116528415 B CN116528415 B CN 116528415B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 70
- 238000007731 hot pressing Methods 0.000 title abstract description 7
- 230000006698 induction Effects 0.000 claims abstract description 33
- 238000004378 air conditioning Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 238000013021 overheating Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 238000007596 consolidation process Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The application relates to a battery core heating assembly, a battery core heating device and battery core hot pressing equipment. At least two magnetic conduction pieces are arranged on two sides of the electric core piece along a first preset direction. The magnetic conduction piece comprises a parallel part, a first inner convex part connected with the parallel part and a second inner convex part connected with the parallel part. The first inner convex part and the second inner convex part are distributed along a second preset direction, and the first inner convex part and the second inner convex part are arranged close to the heating station relative to the parallel part. A second inner convex part is arranged between two adjacent first inner convex parts. The induction coil is sleeved on the first inner convex part. Because the first inner convex part and the second inner convex part are distributed along the second preset direction, the first inner convex part and the second inner convex part respectively guide the magnetic field to different positions of the electric core piece, so that eddy currents are dispersed to a plurality of different positions on the electric core piece, the heating effect on the electric core piece is more uniform, and the electric core piece is prevented from being shortened in service life due to local overheating.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to a battery cell heating assembly, a battery cell heating device and battery cell hot pressing equipment.
Background
Along with the development of technology, the power battery is widely applied to the fields of electric automobiles and the like, and the electric core is a core device of the power battery. There are methods of heating a core using the principle of electromagnetic induction in the related art. However, conventional electromagnetic induction mainly uses an alternating current through a coil, and an alternating magnetic field is generated around the coil. The greater the distance from the coil, the smaller the strength of the magnetic field, limited by the magnetic field distribution. The distance between some parts of the battery core and the coil is larger, and the distance between other parts of the battery core and the coil is smaller. Therefore, some parts of the battery cell can only induce weak eddy current due to weak magnetic field, so that the temperature in the battery cell is not uniform, especially for the battery cell with a large length. The temperature in the battery cell is uneven, so that a uniform consolidation effect cannot be formed between the diaphragm and the pole piece, and even the service life of the battery cell can be influenced due to local overheating.
Disclosure of Invention
Based on this, it is necessary to mainly heat the portion of the battery core corresponding to the coil by electromagnetic induction, and the portion of the battery core far away from the coil is relatively low in heating effect, so that the temperature of a part of the battery core is too high, and the temperature of another part of the battery core is still low, so that the consolidation effect of the diaphragm and the pole piece and the service life of the battery core may be affected.
A cell heating assembly provided with a heating station for receiving a cell, comprising:
the magnetic conduction pieces are arranged on two sides of the heating station along a first preset direction; the magnetic conduction piece comprises a parallel part, a first inner convex part connected with the parallel part and a second inner convex part connected with the parallel part; the first inner convex parts and the second inner convex parts are distributed along a second preset direction, the second preset direction is perpendicular to the first preset direction, and the first inner convex parts and the second inner convex parts are close to the battery cell piece relative to the parallel part; the second inner convex parts are arranged between two adjacent first inner convex parts; a kind of electronic device with high-pressure air-conditioning system
The induction coil is sleeved on the first inner convex part.
According to the battery core energy storage device, when the battery core heating assembly needs to heat the battery core piece, alternating current is introduced into the induction coil, and an alternating magnetic field is generated around the induction coil. Because the induction coil is sleeved on the first inner convex part, under the condition that the magnetic conduction piece has certain magnetic conductivity, the magnetic field is conducted to the electric core piece at one end of the first inner convex part, the magnetic field is conducted to the second inner convex part through the parallel part at the other end of the first inner convex part, and then the magnetic field is transferred to the other part of the electric core piece through the second inner convex part. Under the action of the alternating magnetic field, eddy currents are formed inside the electric core piece, heat is generated, and the temperature of the electric core piece is increased. Because the first inner convex part and the second inner convex part are distributed along the length direction of the electric core piece, the first inner convex part and the second inner convex part respectively guide the magnetic field to different positions of the electric core piece, relatively obvious eddy currents are dispersed to a plurality of different positions on the electric core piece, and obvious alternating magnetic fields pass through the position on the electric core piece, which is larger in distance from the induction coil, so that the heating effect on the electric core piece is more uniform, the consolidation effect of the diaphragm and the pole piece is effectively improved, and the service life of the electric core piece is prevented from being shortened due to local overheating.
In one embodiment, more than two of the magnetically permeable members are distributed along the second predetermined direction on either side of the heating station. More than two magnetic conduction pieces are distributed along the length direction of the electric core piece, so that the length of the electric core piece can be well adapted, and the oversize of a single magnetic core piece is avoided.
In one embodiment, the width of the first inner protrusion is 30% to 100% of the width of the second inner protrusion. When the width of the first inner convex part is 30-100% of the width of the second inner convex part, the distribution amount of the magnetic density on the second inner convex part can be ensured, so that the magnetic density is distributed more uniformly between the first inner convex part and the second inner convex part. Meanwhile, when the width of the first inner convex part is 30-100% of the width of the second inner convex part, the air gap flux density between the second inner convex part and the electric core piece can be ensured, and the heating efficiency of the electric core piece is improved.
In one embodiment, the parallel portion is connected with the first inner protrusions at both ends parallel to the second predetermined direction, respectively. By connecting the first inner protruding portions at both ends of the parallel portion, a good magnetic circuit butt joint can be formed between the parallel portion and the first inner protruding portions, and leakage of magnetic field energy at both ends of the parallel portion is reduced.
In one embodiment, the extending direction of the first inner convex part is perpendicular to the length direction of the parallel part; and/or the extending direction of the second inner convex part is perpendicular to the length direction of the parallel part.
In one embodiment, along the second predetermined direction, the position of the first inner protrusion of one magnetic conductive member corresponds to the position of the first inner protrusion of the other magnetic conductive member, and the two first inner protrusions are disposed opposite to each other with opposite magnetic poles. The position corresponds to the direction parallel to the length of the electric core piece, so that the shortest connecting line between the two first inner convex parts is perpendicular to the length direction of the electric core piece, the two first inner convex parts corresponding to the position are matched with the electric core piece to form a shorter magnetic circuit, the magnetic field energy is favorably concentrated to the electric core piece, and the loss of the magnetic field energy is reduced.
In one embodiment, along the second predetermined direction, the position of the second inner protrusion of one of the magnetic conductive members corresponds to the position of the second inner protrusion of the other magnetic conductive member.
In one embodiment, the number of first inner protrusions is greater than the number of second inner protrusions. Because the first inner convex part is sleeved with the induction coil, and the second inner convex part is not sleeved with the induction coil, the number of the induction coils can be reduced under the condition that the number of the first inner convex parts is larger than that of the second inner convex parts, the assembly difficulty of the battery core energy storage device is reduced, and the assembly efficiency is improved.
A battery cell heating device comprises a battery cell heating component.
A battery cell hot-pressing device comprises a battery cell heating device.
Drawings
Fig. 1 is a schematic structural diagram of a battery cell energy storage device according to an embodiment of the application.
Fig. 2 is a schematic structural diagram of a battery cell energy storage device according to another embodiment of the application.
Fig. 3 is a schematic diagram illustrating a magnetic field direction of a battery cell energy storage device according to an embodiment of the application.
Fig. 4 is a diagram illustrating a magnetic density distribution effect of a battery cell energy storage device according to an embodiment of the application.
Reference numerals: 100. a cell heating assembly; 101. a heating station; 20. a cell element; 30. a magnetic conductive member; 31. a parallel section; 32. a first inner convex portion; 33. a second inner convex portion; 40. an induction coil; f1, a first preset direction; f2, a second preset direction.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.
The application provides a hot-pressing device for a battery cell.
In some embodiments, as shown in fig. 1, the cell hot pressing apparatus is used to heat the cell 20 and press the heated cell 20, so that the membrane in the cell 20 is consolidated with the pole piece. In some embodiments, the cell hot press apparatus includes a cell heating device and a cell pressing device. The cell heating device is used for heating the cell 20. The cell lamination device is used for laminating the heated cell 20. In one embodiment, the cell lamination device includes lamination plates and a lamination driving member, where the lamination driving member is used to drive the two lamination plates to be relatively far away from or close to each other. The two press plates press against the middle cell 20 when they are close to each other.
In some embodiments, the cell heating device is capable of carrying the cell 20 and of generating an alternating magnetic field. The alternating magnetic field generates eddy currents within the cell 20, causing heat to be generated within the cell 20.
The application further provides a cell heating device.
In some embodiments, as shown in connection with fig. 1, the cell heating device includes a cell heating assembly 100, the cell heating assembly 100 being configured to generate an alternating magnetic field to form eddy currents within the cell 20. Further, the cell heating assembly 100 is provided with a heating station 101 for receiving the cell 20. In some embodiments, the cell heating device further comprises a carrying assembly for carrying or placing the cell 20 such that the cell 20 is maintained within the magnetic field region. Further, the carrier assembly is further configured to guide the moving of the electrical core 20, so that the plurality of electrical core 20 sequentially pass through the heating station 101 of the electrical core heating assembly 100.
Referring to fig. 1 and 2, the present application provides a cell heating assembly 100.
In some embodiments, as shown in connection with fig. 1 and 2, the cell heating assembly 100 includes: the magnetic conductive member 30 and the induction coil 40. At least two magnetic conductive members 30 are disposed on both sides of the heating station 101 along the first predetermined direction F1. The magnetic conductive member 30 includes a parallel portion 31, a first inner protruding portion 32 connected to the parallel portion 31, and a second inner protruding portion 33 connected to the parallel portion 31. The first inner convex portions 32 and the second inner convex portions 33 are distributed along a second predetermined direction F2, the second predetermined direction F2 is perpendicular to the first predetermined direction F1, and the first inner convex portions 32 and the second inner convex portions 33 are disposed close to the heating station 101 relative to the parallel portion 31. A second inner convex portion 33 is provided between two adjacent first inner convex portions 32. The induction coil 40 is sleeved on the first inner convex part 32.
Specifically, when the cell heating assembly 100 needs to heat the cell 20, the induction coil 40 is energized with an alternating current, and an alternating magnetic field is generated around the induction coil 40. Since the induction coil 40 is sleeved on the first inner protrusion 32, in the case that the magnetic conductive member 30 has a certain magnetic permeability, the magnetic field is conducted to the cell member 20 at one end of the first inner protrusion 32, the magnetic field is conducted to the second inner protrusion 33 through the parallel portion 31 at the other end of the first inner protrusion 32, and then the magnetic field is transferred to another portion of the cell member 20 by the second inner protrusion 33. Under the action of the alternating magnetic field, eddy currents are formed inside the cell 20, heat is generated, and the temperature of the cell 20 is raised. Because the first inner convex part 32 and the second inner convex part 33 are distributed along the length direction of the electric core piece 20, the first inner convex part 32 and the second inner convex part 33 respectively guide the magnetic field to different positions of the electric core piece 20, so that eddy currents are dispersed to a plurality of different positions on the electric core piece 20, and obvious alternating magnetic fields pass through the positions, which do not correspond to the induction coil 40, on the electric core piece 20, so that the heating effect on the electric core piece 20 is more uniform, the consolidation effect of a diaphragm and a pole piece is effectively improved, and the service life of the electric core piece 20 is prevented from being shortened due to local overheating.
In some embodiments, after the cell 20 is received in the heating station 101, the length direction of the cell 20 is parallel to the second predetermined direction F2. In some embodiments, the second predetermined direction F2 is perpendicular to the first predetermined direction F1, and it may be understood that an included angle formed between the second predetermined direction F2 and the first predetermined direction F1 is in a range of 80 degrees to 100 degrees. In one embodiment, the angle formed between the second predetermined direction F2 and the first predetermined direction F1 is 90 degrees.
In some embodiments, the angle formed between the second predetermined direction F2 and the first predetermined direction F1 is 90 degrees. The third predetermined direction forms an included angle of 90 degrees with the second predetermined direction F2 and the first predetermined direction F1, respectively. In some embodiments, the carrier assembly is capable of guiding the cell 20 to move in a third predetermined direction and through the heating station 101.
Specifically, the cell 20 includes a lithium cell or a sodium cell.
Specifically, the magnetic conductive member 30 is made of a high magnetic permeability material. More specifically, the high permeability material comprises one or more of iron, cobalt, or nickel. In some embodiments, the magnetic conductive member 30 may be formed by stacking a plurality of magnetic conductive sheets, for example, a silicon steel sheet. In some embodiments, the magnetically permeable member 30 comprises a core. In some embodiments, the first predetermined direction F1 is disposed vertically, and the two magnetic conductive members 30 are disposed on the upper and lower sides of the heating station 101, respectively. Specifically, one or more induction coils 40 may be sleeved on one of the first inner protrusions 32.
In some embodiments, on either side of the heating station 101, more than two magnetically permeable members 30 are distributed along the second predetermined direction F2. Specifically, according to the length of the cell 20, more than two magnetic conductive members 30 are distributed along the length direction of the cell 20, so that the length of the cell 20 can be better adapted, and the oversized single magnetic conductive member 30 is avoided.
In some embodiments, as shown in connection with fig. 2, the cell 20 is between two sets of magnetically permeable members 30. The first set of magnetic conductive members 30 includes more than two magnetic conductive members 30 distributed along the length direction of the electrical core 20. Specifically, the sum of the lengths of all of the magnetically permeable members 30 in the first set is less than or equal to the length of the cell member 20. The second set of magnetic conductive members 30 includes two or more magnetic conductive members 30 distributed along the length direction of the electrical core 20. Specifically, the sum of the lengths of all of the magnetically permeable members 30 in the second set is less than or equal to the length of the cell member 20. More specifically, the core elements 20 and the two sets of magnetic conductive elements 30 are distributed parallel to a plane.
Further, one of the first set of magnetically permeable members 30 is positioned symmetrically with respect to one of the second set of magnetically permeable members 30 with respect to the cell member 20. In one embodiment, the number of magnetically permeable elements 30 in the first set is the same as the number of magnetically permeable elements 30 in the second set.
In other embodiments, as shown in connection with fig. 1, where the length of the cell 20 is not particularly large, a single magnetically permeable member 30 may be provided for each side along the radial direction of the cell 20, and the length of the magnetically permeable member 30 may be less than or equal to the length of the cell 20.
In some embodiments, more than three magnetic conductive members 30 may be circumferentially distributed around the cell 20 to enhance the magnetic density in the cell 20 and enhance the heating effect.
In some embodiments, as shown in connection with fig. 4, the width of the first inner protrusion 32 is 30% to 100% of the width of the second inner protrusion 33. Specifically, since the volume difference between the first inner protrusion 32 and the second inner protrusion 33 is related to the distribution of the magnetic density, the variation in the size relationship between the first inner protrusion 32 and the second inner protrusion 33 in width can adjust the distribution of the magnetic density in the magnetic conductive member 30. When the width of the first inner convex portion 32 is 30% to 100% of the width of the second inner convex portion 33, the distribution amount of the magnetic flux density on the second inner convex portion 33 can be ensured, so that the distribution of the magnetic flux density between the first inner convex portion 32 and the second inner convex portion 33 is more uniform. Meanwhile, when the width of the first inner convex part 32 is 30% to 100% of the width of the second inner convex part 33, the air gap flux density between the second inner convex part 33 and the cell 20 can be ensured, and the heating efficiency of the cell 20 is increased. More specifically, the width of the first inner protrusion 32 is parallel to the length direction of the cell 20. The width of the second inner protrusion 33 is parallel to the length direction of the cell 20.
In some embodiments, the width of the first inner lobe 32 is 30%, 50%, 70%, or 100% of the width of the second inner lobe 33. In some embodiments, the width of the first inner lobe 32 is 1/3 or 2/3 of the width of the second inner lobe 33.
In some embodiments, as shown in connection with fig. 4, the width of the first inner protrusion 32 ranges from 20mm to 60mm. The width of the second inner convex portion 33 ranges from 40mm to 80mm. Specifically, when the width of the first inner protrusion 32 ranges from 20mm to 60mm, the width of the first inner protrusion 32 can be in a reasonable range, so that the weight of the cell heating assembly 100 is prevented from being increased due to the excessively large volume of the first inner protrusion 32. And simultaneously, the minimum width of the first inner convex part 32 is limited, so that the air gap magnetic flux density between the first inner convex part 32 and the cell element 20 can be ensured.
Specifically, when the width of the second inner protrusion 33 ranges from 40mm to 80mm, the width of the second inner protrusion 33 can be made to be in a reasonable range, avoiding the increase in weight of the cell heating assembly 100 due to the excessive volume of the second inner protrusion 33. And at the same time, the minimum width of the second inner convex part 33 is limited, so that the air gap magnetic density between the second inner convex part 33 and the cell element 20 can be ensured.
In some embodiments, as shown in fig. 1 and 2, the parallel portion 31 is connected with the first inner protrusions 32 at both ends parallel to the second predetermined direction F2, respectively. Specifically, by connecting the first inner protrusions 32 to the two ends of the parallel portion 31, a good magnetic path junction between the parallel portion 31 and the first inner protrusions 32 can be formed, and leakage of magnetic field energy to the two ends of the parallel portion 31 is reduced.
In some embodiments, as shown in fig. 1 and 2, the extending direction of the first inner protrusion 32 is perpendicular to the length direction of the parallel portion 31, so that the changing angle of the magnetic field directions at both sides of the first inner protrusion 32 can be reduced at the junction of the first inner protrusion 32 and the parallel portion 31, and the loss of the magnetic field energy at the junction of the first inner protrusion 32 and the parallel portion 31 can be reduced. Specifically, the extending direction of the first inner convex portion 32 is perpendicular to the longitudinal direction of the parallel portion 31. In some embodiments, the length direction of the parallel portion 31 is parallel to the length direction of the cell 20.
In some embodiments, as shown in fig. 1 and 2, the extending direction of the second inner protrusion 33 is perpendicular to the length direction of the parallel portion 31, so that the changing angle of the magnetic field direction at both sides of the second inner protrusion 33 can be reduced at the junction of the second inner protrusion 33 and the parallel portion 31, and the loss of the magnetic field energy at the junction of the second inner protrusion 33 and the parallel portion 31 can be reduced. Specifically, the extending direction of the second inner convex portion 33 is perpendicular to the longitudinal direction of the parallel portion 31.
In some embodiments, as shown in fig. 1 and 2, in the second predetermined direction F2, the position of one first inner protrusion 32 of one magnetic conductive member 30 corresponds to the position of one first inner protrusion 32 of the other magnetic conductive member 30, and the two first inner protrusions 32 are disposed opposite to each other with opposite magnetic poles. Specifically, the two magnetic conductive members 30 are respectively located at two sides of the electric core member 20, and the positions of the two magnetic conductive members are corresponding in the direction parallel to the length direction of the electric core member 20, so that the shortest connecting line between the two first inner protruding portions 32 is perpendicular to the length direction of the electric core member 20, and the two first inner protruding portions 32 corresponding to the positions are matched with the electric core member 20 to form a shorter magnetic circuit, thereby being beneficial to concentrating magnetic field energy to the electric core member 20 and reducing the loss of the magnetic field energy.
In some embodiments, as shown in fig. 3, for two corresponding first inner protrusions 32, an induction coil 40 in a predetermined winding direction is selected, and the induction coil 40 is sleeved on one of the first inner protrusions 32, so that an N pole can be formed at an end of the first inner protrusion 32 close to the cell 20. By selecting another predetermined winding direction of the induction coil 40 and sleeving the induction coil 40 to the other first inner convex portion 32, the first inner convex portion 32 is close to one end of the cell element 20 to form an S pole. Since the two first inner protrusions 32 can be oppositely arranged with opposite magnetic poles, the magnetic fields from the different magnetic conductive members 30 are superposed in the same direction in the electric core member 20, thereby improving the heating effect on the electric core member 20.
In some embodiments, as shown in fig. 1 and 2, along the second predetermined direction F2, the position of the second inner protrusion 33 of one magnetic conductive member 30 corresponds to the position of the second inner protrusion 33 of the other magnetic conductive member 30. Specifically, the two second inner protrusions 33 respectively located at two sides of the cell 20 correspond to each other in position in the direction parallel to the length of the cell 20, so that the shortest connecting line between the two second inner protrusions 33 is perpendicular to the length direction of the cell 20, and the two second inner protrusions 33 corresponding to each other in position cooperate with the cell 20 to form a shorter magnetic circuit, thereby facilitating the concentration of magnetic field energy to the cell 20 and reducing the loss of the magnetic field energy.
In some embodiments, as shown in connection with fig. 1 and 2, the number of first inner protrusions 32 is greater than the number of second inner protrusions 33. Specifically, since the first inner convex portion 32 is sleeved with the induction coil 40, and the second inner convex portion 33 is not sleeved with the induction coil 40, the number of the induction coils 40 can be reduced under the condition that the number of the first inner convex portions 32 is larger than that of the second inner convex portions 33, the assembly difficulty of the electric core heating assembly 100 can be reduced, and the assembly efficiency can be improved. In addition, since the number of the induction coils 40 is relatively reduced, vibration noise caused by electromagnetic force of the induction coils 40 can be reduced.
Specifically, when the cell heating assembly 100 needs to heat the cell 20, the induction coil 40 is energized with an alternating current, and an alternating magnetic field is generated around the induction coil 40. Since the induction coil 40 is sleeved on the first inner protrusion 32, in the case that the magnetic conductive member 30 has a certain magnetic permeability, the magnetic field is conducted to the cell member 20 at one end of the first inner protrusion 32, the magnetic field is conducted to the second inner protrusion 33 through the parallel portion 31 at the other end of the first inner protrusion 32, and then the magnetic field is transferred to another portion of the cell member 20 by the second inner protrusion 33. Under the action of the alternating magnetic field, eddy currents are formed inside the cell 20, heat is generated, and the temperature of the cell 20 is raised. Because the first inner convex part 32 and the second inner convex part 33 are distributed along the length direction of the cell element 20, the first inner convex part 32 and the second inner convex part 33 respectively guide the magnetic field to different positions of the cell element 20, so that relatively obvious eddy currents are dispersed to a plurality of different positions on the cell element 20, and obvious alternating magnetic fields pass through the position on the cell element 20, which is larger in distance from the induction coil 40, so that the heating effect on the cell element 20 is more uniform, the consolidation effect of a diaphragm and a pole piece is effectively improved, and the service life of the cell element 20 is prevented from being shortened due to local overheating.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A cell heating assembly provided with a heating station for receiving a cell, comprising:
the magnetic conduction pieces are arranged on two sides of the heating station along a first preset direction; the magnetic conduction piece comprises a parallel part, a first inner convex part connected with the parallel part and a second inner convex part connected with the parallel part; the first inner convex parts and the second inner convex parts are distributed along a second preset direction, the second preset direction is perpendicular to the first preset direction, and the first inner convex parts and the second inner convex parts are arranged close to the heating station relative to the parallel part; the number of the first inner convex parts is larger than that of the second inner convex parts, and the second inner convex parts are arranged between two adjacent first inner convex parts; the width of the first inner convex part is 30% to 70% of the width of the second inner convex part; a kind of electronic device with high-pressure air-conditioning system
An induction coil; the first inner convex part is sleeved with the induction coil, and the second inner convex part is not sleeved with the induction coil.
2. The electrical core heating assembly of claim 1, wherein more than two of said magnetically permeable members are disposed along said second predetermined direction on either side of said heating station.
3. The electrical core heating assembly of claim 1, wherein the width of the first inner protrusion is 30%, 50% or 70% of the width of the second inner protrusion.
4. The electrical core heating assembly as recited in claim 1, wherein the parallel portion is connected with the first inner protrusions at both ends parallel to the second predetermined direction, respectively.
5. The electrical core heating assembly of claim 1, wherein the direction of extension of the first inner protrusion is perpendicular to the length direction of the parallel portion; and/or the extending direction of the second inner convex part is perpendicular to the length direction of the parallel part.
6. The electrical core heating assembly as recited in claim 1, wherein the first inner protrusion of one of the magnetically permeable members corresponds in position to the first inner protrusion of the other of the magnetically permeable members in the second predetermined direction, the two first inner protrusions being oppositely disposed with opposite poles.
7. The electrical core heating assembly as recited in claim 6, wherein the position of the second inner protrusion of one of the magnetically permeable members corresponds to the position of the second inner protrusion of the other of the magnetically permeable members in the second predetermined direction.
8. The electrical core heating assembly as recited in claim 6, wherein two of the magnetically permeable members are on opposite sides of the electrical core member.
9. A cell heating device comprising a cell heating assembly according to any one of claims 1 to 8.
10. A cell hot press apparatus comprising the cell heating device of claim 9.
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| CN202310801513.1A CN116528415B (en) | 2023-07-03 | 2023-07-03 | Battery cell heating assembly, battery cell heating device and battery cell hot pressing equipment |
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| CN202310801513.1A CN116528415B (en) | 2023-07-03 | 2023-07-03 | Battery cell heating assembly, battery cell heating device and battery cell hot pressing equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697898U (en) * | 1979-12-27 | 1981-08-03 | ||
| JPS6028197A (en) * | 1983-07-26 | 1985-02-13 | 新日本製鐵株式会社 | Inductor for transverse flux heating |
| EP0135025A1 (en) * | 1983-07-21 | 1985-03-27 | Force Engineering Limited | Travelling wave induction heater |
| JP2009181886A (en) * | 2008-01-31 | 2009-08-13 | Shimada Phys & Chem Ind Co Ltd | High-frequency induction heating apparatus |
| CN104685964A (en) * | 2012-10-04 | 2015-06-03 | 株式会社电装 | Induction heating device |
| JP2017195101A (en) * | 2016-04-21 | 2017-10-26 | 宇部興産株式会社 | Induction heating head, induction heating apparatus and detector |
| CN116261236A (en) * | 2023-05-16 | 2023-06-13 | 海目星激光科技集团股份有限公司 | Cell heating device and method |
-
2023
- 2023-07-03 CN CN202310801513.1A patent/CN116528415B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697898U (en) * | 1979-12-27 | 1981-08-03 | ||
| EP0135025A1 (en) * | 1983-07-21 | 1985-03-27 | Force Engineering Limited | Travelling wave induction heater |
| JPS6028197A (en) * | 1983-07-26 | 1985-02-13 | 新日本製鐵株式会社 | Inductor for transverse flux heating |
| JP2009181886A (en) * | 2008-01-31 | 2009-08-13 | Shimada Phys & Chem Ind Co Ltd | High-frequency induction heating apparatus |
| CN104685964A (en) * | 2012-10-04 | 2015-06-03 | 株式会社电装 | Induction heating device |
| JP2017195101A (en) * | 2016-04-21 | 2017-10-26 | 宇部興産株式会社 | Induction heating head, induction heating apparatus and detector |
| CN116261236A (en) * | 2023-05-16 | 2023-06-13 | 海目星激光科技集团股份有限公司 | Cell heating device and method |
Non-Patent Citations (2)
| Title |
|---|
| IH电饭煲烹饪过程温度分布均匀性研究;孔进喜;《家电科技》;84-86 * |
| 两种宽度带材的横向磁通感应加热温度场计算;丁鹏辉;《中国优秀硕士学位论文全文数据库》;1-59 * |
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