CN115207434A - Electricity core hot pressing equipment - Google Patents
Electricity core hot pressing equipment Download PDFInfo
- Publication number
- CN115207434A CN115207434A CN202210840331.0A CN202210840331A CN115207434A CN 115207434 A CN115207434 A CN 115207434A CN 202210840331 A CN202210840331 A CN 202210840331A CN 115207434 A CN115207434 A CN 115207434A
- Authority
- CN
- China
- Prior art keywords
- pressing
- magnetic
- piece
- magnetic conductive
- magnetic conduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007731 hot pressing Methods 0.000 title claims abstract description 37
- 230000005611 electricity Effects 0.000 title claims description 4
- 238000003825 pressing Methods 0.000 claims abstract description 210
- 238000009434 installation Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 230000005674 electromagnetic induction Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000005570 vertical transmission Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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)
- Secondary Cells (AREA)
Abstract
The invention discloses a cell hot-pressing device, which comprises: the pressing device comprises a first pressing piece and a second pressing piece, the first pressing piece is used for bearing the battery cell, and the second pressing piece is arranged opposite to the first pressing piece; the driving device is used for driving the first pressing piece and the second pressing piece to relatively approach or separate; the first magnetic conduction device comprises at least one first magnetic conduction piece, and the first magnetic conduction piece is connected to the first pressing piece; the second magnetic conduction device comprises at least one second magnetic conduction piece, and the second magnetic conduction piece is connected to the second pressing piece; at least one of the first magnetic conductive part and the second magnetic conductive part is connected with a coil; when the first pressing part and the second pressing part are relatively close to the pressing position, the first magnetic conduction part and the second magnetic conduction part are relatively close to each other, so that the first magnetic conduction part and the second magnetic conduction part form a closed magnetic conduction passage. The hot-pressing equipment is provided with the magnetic conduction piece, and the magnetic conduction piece can form a closed magnetic conduction path, so that the penetrating capability of a magnetic field is enhanced, and the heating time is shortened.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a cell hot-pressing device.
Background
With the development of the technology, the power battery is widely applied to the fields of electric vehicles and the like, the battery core is a core device of the power battery, and the manufacturing process comprises a hot pressing step, namely, an external heat source is utilized to heat the diaphragm, so that the diaphragm and the pole piece are solidified under the action of pressure. Generally, hot pressing equipment integrates heating devices such as heating pipes inside a pressing plate, the heating device firstly heats the pressing plate, then the pressing plate heats an electric core, attenuation and dissipation of heat exist in the transmission process, and the heating sequence of the electric core is from outside to inside, therefore, the heating time is long, on the basis, a method for heating the electric core by using the electromagnetic induction principle exists at present, a coil is usually arranged on the pressing plate or a first pressing piece bearing the electric core, the electric core is heated by using an alternating magnetic field generated by the coil, however, the thickness of the electric core is thick, the current electromagnetic induction heating device can only heat the surface layer of the electric core, and the requirement is difficult to meet.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a cell hot-pressing device which can heat a cell in an electromagnetic induction mode.
According to the cell hot pressing device provided by the embodiment of the invention, the cell hot pressing device comprises:
the pressing device comprises a first pressing piece and a second pressing piece, the first pressing piece is used for bearing the battery cell, and the second pressing piece is arranged opposite to the first pressing piece;
the driving device is connected to at least one of the first pressing piece and the second pressing piece and is used for driving the first pressing piece and the second pressing piece to relatively approach or separate;
the first magnetic conduction device comprises at least one first magnetic conduction piece, and the first magnetic conduction piece is connected to the first pressing piece;
the second magnetic conduction device comprises at least one second magnetic conduction piece, and the second magnetic conduction piece is connected to the second pressing piece;
a coil to which at least one of the first and second magnetically conductive members is connected;
when the first pressing piece and the second pressing piece are relatively close to the pressing position, the first magnetic conduction piece and the second magnetic conduction piece are relatively close to each other, so that the first magnetic conduction piece and the second magnetic conduction piece form a closed magnetic conduction passage.
The cell hot-pressing equipment provided by the embodiment of the invention at least has the following beneficial effects:
the hot-pressing equipment is provided with the magnetic conduction piece, the magnetic conduction piece can form a closed magnetic conduction path, the penetrating capacity of a magnetic field is enhanced, the surface layer and the interior of the electric core can be directly heated, the heating time is shortened, and the electric core is heated more uniformly. In addition, magnetic conduction spare and pressfitting spare can the synchronous motion, and when the thickness of electric core changed, magnetic conduction spare and pressfitting spare can remove in order to adapt to the thickness change of electric core.
In other embodiments of the present invention, a first end of the first magnetic conductive member far from the first pressing member includes a first magnetic conductive portion, and a second end of the second magnetic conductive member far from the second pressing member includes a second magnetic conductive portion, wherein when the first pressing member and the second pressing member are relatively close to a pressing position, the first magnetic conductive portion and the second magnetic conductive portion are staggered and adjacently disposed along a horizontal direction, and a highest position of the first magnetic conductive portion is not lower than a lowest position of the second magnetic conductive portion.
In other embodiments of the present invention, the first end portion includes a plurality of first magnetic conductive portions arranged at intervals, and the second end portion includes a plurality of second magnetic conductive portions arranged at intervals, wherein when the first pressing member and the second pressing member are relatively close to the pressing position, the second magnetic conductive portions are inserted between adjacent first magnetic conductive portions, and the first magnetic conductive portions are inserted between adjacent second magnetic conductive portions.
In other embodiments of the present invention, the first magnetic conductive member and the second magnetic conductive member are configured as follows: when the first pressing piece and the second pressing piece are relatively close to the pressing position, the first magnetic conduction piece is far away from the first end part of the first pressing piece, and the first magnetic conduction piece and the second magnetic conduction piece are far away from the second pressing piece and are arranged in a staggered and adjacent mode along the horizontal direction, and the highest position of the first end part is not lower than the lowest position of the second end part.
In another embodiment of the present invention, the coil is connected to both the first magnetic conductive member and the second magnetic conductive member.
In other embodiments of the present invention, the first pressing element has a first pressing surface, the second pressing element has a second pressing surface, the first magnetic conductive element is connected to the third end portion of the first pressing element and perpendicular to the first pressing surface, and the second magnetic conductive element is connected to the fourth end portion of the second pressing element and perpendicular to the second pressing surface.
In other embodiments of the present invention, the first pressing component includes a base portion and a pressing portion, the pressing portion has a pressing surface for supporting the battery cell, the first magnetic conductive component and the pressing portion are both connected to the base portion, and the first magnetic conductive component and the pressing portion are separately disposed along a pressure transmission direction.
In other embodiments of the present invention, a slot is disposed on a side of the pressing portion opposite to the pressing surface, and the first magnetic conductive member is connected to the third end portion of the first pressing member and inserted into the slot.
In other embodiments of the present invention, the first pressing element further includes a supporting portion, the pressing portion is connected to the base portion through the supporting portion to form an installation space between the pressing portion and the base portion, and the first magnetic conductive element is connected to a third end portion of the first pressing element, extends into the installation space, and is perpendicular to the pressing surface.
In other embodiments of the present invention, the first magnetic conducting device includes a plurality of the first magnetic conducting members, the second magnetic conducting device includes a plurality of the second magnetic conducting members, and the second magnetic conducting members are disposed corresponding to the first magnetic conducting members, where the plurality of the first magnetic conducting members are sequentially disposed along a length direction of the electrical core, and/or the plurality of the first magnetic conducting members are sequentially disposed along a width direction of the electrical core.
Additional aspects and advantages of the invention 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 invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a front view of a cell hot-pressing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the cell hot-pressing apparatus in fig. 1;
fig. 3 is a schematic diagram of a cell hot-pressing apparatus in a pressing state according to another embodiment of the present disclosure;
FIG. 4 is a schematic diagram of the magnetic conductive member and the coil according to another embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a first magnetic conductive member and a second magnetic conductive member when the cell hot-pressing apparatus is in a press-fit state according to another embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating the first magnetic conductive member and the second magnetic conductive member when the cell hot-pressing apparatus in fig. 1 is in a press-fit state;
fig. 7 is a schematic diagram illustrating a matching between the first magnetic conductive member and the second magnetic conductive member when the cell hot-pressing apparatus is in a press-fit state according to another embodiment of the present disclosure;
fig. 8 is a cross-sectional view of the connection between the first pressing member and the first magnetic conductive member in fig. 1.
Reference numerals are as follows:
the pressing device 100, the first pressing element 110, the first pressing surface 111, the base 112, the pressing part 113, the supporting part 114, the second pressing element 120, and the second pressing surface 121;
a driving device 200;
the first magnetic conducting device 300, the first magnetic conducting member 310, the first end portion 311, the first magnetic conducting portion 312, and the third end portion 313;
a second magnetic conducting device 400, a second magnetic conducting member 410, a second end 411, a second magnetic conducting part 412, and a fourth end 413;
a coil 500;
an electric core 600;
a housing 700.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The electric core is usually formed by winding or laminating a diaphragm, a positive plate and a negative plate, in the preparation process, the electric core needs to consolidate the diaphragm and the pole pieces in a hot pressing mode, at present, a hot pressing device for heating the electric core through an electromagnetic induction principle exists, however, a disc type coil is usually adopted by the hot pressing device in the related technology, however, the coil is usually used for heating a cooker, the penetrating capability of the coil is limited, and the thickness of the electric core is far greater than the wall thickness of the cooker, therefore, the current electromagnetic induction hot pressing device can only heat the surface layer of the electric core, and is difficult to heat the inside of the electric core, so that a conventional heating means is also needed to be combined, or the heating time is prolonged, so that heat is transferred from the surface layer of the electric core to the inside of the electric core.
Referring to fig. 1 and fig. 2, a dotted line in fig. 2 represents a portion where the magnetic conductive member is shielded, and the electric core hot-pressing apparatus includes a pressing device 100, a driving device 200, a first magnetic conductive device 300, a second magnetic conductive device 400, and a coil 500, where the driving device 200 can cooperate with the pressing device 100 to press the electric core 600, the first magnetic conductive device 300 and the second magnetic conductive device 400 can establish a closed magnetic conductive path, and cooperate with the coil 500 to heat the electric core 600.
The laminating apparatus 100 includes a first laminating member 110 and a second laminating member 120, and the first laminating member 110 and the second laminating member 120 are disposed opposite to each other, for example, the first laminating member 110 is located below, and the second laminating member 120 is located above, so that the battery cell 600 can be placed on the first laminating member 110 and extruded through the first laminating member 110 and the second laminating member 120. The first pressing member 110 and the second pressing member 120 may each include a pressing plate to be attached to the large surface of the square battery cell 600. In addition, in order to realize the directional movement of the pressing part, the cell hot-pressing device further comprises a rack 700, a guide rail is arranged on the rack 700, and at least one of the first pressing part 110 and the second pressing part 120 is connected with the guide rail through a slider.
The driving device 200 is connected to at least one of the first compressing member 110 and the second compressing member 120, and is configured to drive the first compressing member 110 and the second compressing member 120 to approach or separate from each other relatively, when the first compressing member 110 and the second compressing member 120 approach relatively, the battery cell 600 may be extruded, and when the first compressing member 110 and the second compressing member 120 separate from each other relatively, the battery cell 600 to be compressed may be placed between the first compressing member 110 and the second compressing member 120, or the battery cell 600 after being compressed may be taken out. The driving device 200 may include a driving member having a telescopic shaft, such as an air cylinder, and may also be a driving member having a rotating shaft, such as a motor, and converts the rotation of the rotating shaft into a linear movement of the pressing member through a transmission system, wherein the driving device 200 may include a servo motor, a lead screw, and a lead screw seat, so as to precisely control and adjust the pressing force between the first pressing member 110 and the second pressing member 120, ensure the pressing effect, and adapt to the battery cells 600 with different thicknesses.
In the illustrated embodiment, the driving device 200 is connected to the frame 700, and a driving end (e.g., a driving shaft of an air cylinder or a lead screw seat connected to a lead screw) of the driving device is connected to the second pressing member 120, that is, the first pressing member 110 remains stationary to carry the battery cell 600, and the second pressing member 120 moves relative to the first pressing member 110 under the driving of the driving device 200, so that the structure of the driving device 200 can be simplified and the control difficulty can be reduced.
The first magnetic conducting device 300 and the second magnetic conducting device 400 are used for constructing a closed magnetic conducting path to enhance the penetrating capability of the magnetic field, the first magnetic conducting device 300 includes at least one first magnetic conducting member 310, the second magnetic conducting device 400 includes at least one second magnetic conducting member 410, the first magnetic conducting member 310 is connected with the first pressing member 110, the second magnetic conducting member 410 is connected with the second pressing member 120, and the number and the positions of the first magnetic conducting member 310 and the second magnetic conducting member 410 are correspondingly arranged, so that the magnetic conducting members can synchronously move along with the pressing members, for example, as shown in fig. 1, when the second pressing member 120 moves downward to a pressing position relatively close to the first pressing member 110, the second magnetic conducting member 410 synchronously moves downward to be close to the first magnetic conducting member 310, and finally forms a closed magnetic conducting path with the first magnetic conducting member 310.
The magnetic conductive member may be formed by stacking a plurality of layers of magnetic conductive sheets, for example, silicon steel sheets. The magnetic conductors may be U-shaped as shown, such that the first magnetic conductor 310 and the second magnetic conductor 410 may form a substantially ring-shaped structure to establish a closed magnetic conductive path. It should be noted that the closed magnetic conductive path is not limited to be completely closed, and along the direction of the magnetic force lines, when the pressing member is in the pressing position, the first magnetic conductive member 310 and the second magnetic conductive member 410 may be attached, may be overlapped in a crossing manner, or may have a smaller gap (for example, as shown in fig. 3).
At least one of the first magnetic conductive member 310 and the second magnetic conductive member 410 is connected to a coil 500, and an alternating magnetic field may be generated by passing an alternating current through the coil 500 to heat the battery cell 600. The connecting position of the coil 500 is not limited, for example, the coil 500 in fig. 1 is vertically sleeved on the magnetic conductive member, and for example, the coil in fig. 4 is horizontally sleeved on the magnetic conductive member.
The embodiment integrates the pressing part and the magnetic conduction part together and can synchronously move, and has the following advantages:
1. when the pressing piece is pressed, the magnetic conduction piece can also synchronously establish a magnetic conduction path, so that the pressing piece is heated at the same time, and the hot-pressing efficiency is favorably improved.
2. If adopt fixed magnetic conduction spare, can lead to the interval between the magnetic conduction spare fixed, when interval adaptation between the magnetic conduction spare is thin electric core 600, then can't be used to thick electric core 600, on the contrary, when interval adaptation between the magnetic conduction spare is thick electric core 600, then the distance between magnetic conduction spare and the thin electric core 600 can show the increase, form the air gap of broad between magnetic conduction spare and the electric core 600, thereby very big influence magnetic field's see-through ability, lead to electric core 600 inside to be difficult to by the heating, this embodiment is because magnetic conduction spare and the integrated setting of pressfitting spare and synchronous motion, when the thickness of electric core 600 changes, magnetic conduction spare and pressfitting spare can remove the thickness change in order to adapt to electric core 600, guarantee that the distance between magnetic conduction spare and the electric core 600 is invariable for satisfying the required distance of abundant heating.
3. When the pressfitting piece separates, magnetic conduction piece also can alternate segregation, can not hinder the material loading and the unloading of electricity core 600.
In some embodiments, referring to fig. 2, the first magnetic conductive member 310 includes a third end portion 313 connected to the first compressing member 110 and a first end portion 311 far from the first compressing member 110, the first end portion 311 being in a free state, and correspondingly, the second magnetic conductive member 410 includes a fourth end portion 413 connected to the second compressing member 120 and a second end portion 411 far from the second compressing member 120, the second end portion 411 being in a free state. Referring to fig. 5, the first end 311 of the first magnetic conducting member 310 includes a first magnetic conducting portion 312, and the second end 411 of the second magnetic conducting member 410 includes a second magnetic conducting portion 412, when the first pressing member 110 and the second pressing member 120 are relatively close to the pressing position (i.e. the position shown in fig. 5), the first magnetic conducting portion 312 and the second magnetic conducting portion 412 are staggered and adjacently disposed along the horizontal direction, so that the highest position of the first magnetic conducting portion 312 is not lower than the lowest position of the second magnetic conducting portion 412, and thus, in the overlapping region of the first magnetic conducting portion 312 and the second magnetic conducting portion 412, the air gap a therebetween is extremely small, thereby reducing the magnetic resistance in the magnetic conducting path and ensuring the magnetic induction intensity in the magnetic circuit. It should be noted that, on the basis of not hindering the relative movement of the first magnetic conductive member 310 and the second magnetic conductive portion 412, the smaller the width of the air gap a is, the more beneficial the magnetic resistance is to be reduced.
When the battery cell 600 is pressed, a pressure is generally applied in a thickness direction, on one hand, the separator and the pole piece are stacked in the thickness direction, on the other hand, compared with the dimensions in the width and length directions, the dimension in the thickness direction is the smallest, so that a magnetic field can penetrate through the battery cell 600, and based on this, in some specific embodiments, referring to fig. 5, the first end portion 311 of the first magnetic conductive member 310 and the second end portion 411 of the second magnetic conductive member 410 are disposed in the thickness direction of the battery cell 600, and the first magnetic conductive portion 312 and the second magnetic conductive portion 412 extend in both vertical directions, so that even when the relative movement between the first magnetic conductive member 310 and the second magnetic conductive member 410 occurs in the vertical direction due to the change in the thickness of the battery cell 600, the width of the air gap a between the first end portion 311 and the second end portion 411 can be ensured to be constant.
It should be noted that, because the battery cell 600 is relatively thick, if the overall heating of the battery cell 600 is to be realized, the magnetic induction intensity in the magnetic circuit needs to be ensured, and the magnetic resistance in the magnetic circuit is an important factor influencing the magnetic induction intensity, and when a wider air gap exists in the magnetic circuit, the magnetic resistance in the magnetic circuit is significantly increased, so how to ensure that the battery cell hot-pressing equipment can adapt to the battery cells 600 with different thicknesses, and reduce the width of the air gap in the magnetic circuit as much as possible is a problem to be overcome in the practical application of the battery cell hot-pressing equipment, in this embodiment, by interleaving the magnetic conductive parts, not only is the relative movement between the magnetic conductive parts enabled, but also the change of the air gap in the magnetic circuit along with the thickness change of the battery cell 600 is avoided.
Referring to fig. 6, in some embodiments, the first end 311 of the first magnetic conduction member 310 includes a plurality of first magnetic conduction portions 312 disposed at intervals, the second end 411 of the second magnetic conduction member 410 includes a plurality of second magnetic conduction portions 412 disposed at intervals, when the first pressing member 110 and the second pressing member 120 are relatively close to the pressing position (i.e., the position shown in fig. 6), the second magnetic conduction portions 412 are inserted between adjacent first magnetic conduction portions 312, the first magnetic conduction portions 312 are inserted between adjacent second magnetic conduction portions 412, and the arrangement of the plurality of first magnetic conduction portions 312 and the plurality of second magnetic conduction portions 412 can increase the relative area between the magnetic conduction portions in the crossing region, where the relative area is equal to the product of the crossing length and the width of the magnetic conduction portions, for example, on the premise that the crossing length and the width of the magnetic conduction portions are consistent, the relative area in fig. 6 is much larger than the relative area in fig. 5, and the magnetic resistance is inversely proportional to the relative area, so that the scheme in fig. 6 can further reduce the magnetic resistance compared to the scheme in fig. 5.
It should be noted that, in other embodiments, the first end 311 of the first magnetic conductive member 310 and the second end 411 of the second magnetic conductive member 410 may be staggered integrally, so that the highest position of the first end 311 is not lower than the lowest position of the second end 411, as shown in fig. 7, the first magnetic conductive member 310 also includes a first end 311 and a third end 313, and the second magnetic conductive member 410 also includes a second end 411 and a fourth end 413, in this embodiment, the first end 311 and the second end 411 are staggered integrally along the horizontal direction, the second end 411 is located on one side of the first end 311 in the horizontal direction and disposed adjacent to each other, and similarly, when the thickness of the battery cell 600 changes, the first end 311 and the second end 411 move relatively to adapt to the thickness change of the battery cell 600, and the width of the air gap a can be kept constant.
In some embodiments, referring to fig. 1, the first magnetic conductive member 310 and the second magnetic conductive member 410 are both connected to the coil 500, so that magnetic induction intensity in the magnetic circuit can be increased, the battery cell 600 can be heated from two sides of the thickness direction of the battery cell 600, which is equivalent to that the single-side coil 500 only needs to heat the battery cell 600 with half thickness, and is more beneficial to sufficiently heating the battery cell 600.
It should be noted that the present embodiment does not limit the number of the coils 500 connected to the magnetic conductive member, for example, one or more coils 500 may be connected to one magnetic conductive member.
In some embodiments, referring to fig. 2, the first pressing member 110 has a first pressing surface 111, the first pressing surface 111 may be a plane located at the top of the first pressing member 110, the second pressing member 120 has a second pressing surface 121, the second pressing surface 121 may be a plane located at the bottom of the second pressing member 120, and the areas of the first pressing surface 111 and the second pressing surface 121 are both greater than the area of the large surface of the battery cell 600. The first magnetic conductive member 310 is connected to one end (for example, the third end portion 313) of the first pressing member 110 and perpendicular to the first pressing surface 111, and the second magnetic conductive member 410 is connected to one end (for example, the fourth end portion 413) of the second pressing member 120 and perpendicular to the second pressing surface 121, so that magnetic lines of force can vertically pass through the battery cell 600, and the permeability of the magnetic field is increased.
In some embodiments, since the magnetic conductive member and the pressing member are integrally disposed, and the pressing member needs to apply a larger pressure to the battery cell 600 (and also needs to bear a larger reaction force), but the magnetic conductive member cannot bear an excessive pressure generally, in some embodiments of the present invention, the magnetic conductive member and the portion of the pressing member for pressing are disposed separately, so that the reaction force borne by the pressing member is not transmitted to the magnetic conductive member, specifically, taking the first pressing member 110 as an example, referring to fig. 8, the first pressing member 110 includes the base portion 112 and the pressing portion 113, and the pressing portion 113 has a pressing surface for supporting the battery cell 600, for example, the first pressing surface 111, the first magnetic conductive member 310 and the pressing portion 113 are both connected to the base portion 112, and the first magnetic conductive member 310 and the pressing portion 113 are disposed separately, it should be noted that the separation of the first magnetic conductive member 310 and the pressing portion 113 refers to a separation along a force transmission direction, rather than a situation that there is no connection relationship between the first magnetic conductive member 310 and the pressing portion 113, and taking as an example, a vertical transmission direction of the force in the drawing, that a gap between the first magnetic conductive member 310 and the pressing portion 113 cannot be damaged, and the pressing portion 310 and the pressing portion does not bear the reaction force, but the transmission of the first pressing portion 113, and the first pressing portion does not transmit the reaction force to the first pressing portion 112.
In some specific embodiments, the pressing part 113 has a certain thickness to ensure the strength of the pressing part 113 itself, and based on this, referring to fig. 8, a slot 1131 is disposed on a side (i.e., a lower side in the drawing) of the pressing part 113 facing away from the first pressing surface 111, and the third end 313 of the first magnetic conductive member 310 is inserted into the slot 1131, so that a distance between the third end 313 and the first pressing surface 111 can be shortened, and thus, when the battery cell 600 is pressed, the third end is closer to the battery cell 600, and the penetration capability of the magnetic field is increased. On the basis of not influencing the strength of the pressing portion 113, the closer the third end portion 313 is to the first pressing surface 111, the better the permeability of the magnetic field is.
In some embodiments, referring to fig. 8, the first pressing element 110 further includes a supporting portion 114, the pressing portion 113 is connected to the base 112 through the supporting portion 114, so as to form an installation space between the pressing portion 113 and the base 112, a force applied by the pressing portion 113 can be transmitted to the base 112 through the supporting portion 114, the third end portion 313 of the first magnetic conductive member 310 extends into the installation space and is installed on the base 112 directly or through other installation structures, since the pressing portion 113 and the base 112 have the installation space, the third end portion 313 is disposed from a lower side of the pressing portion 113 in a posture perpendicular to the first pressing surface 111, the first end portion 311 of the first magnetic conductive member 310 extends out of the installation space to be used as a free end portion, so as to form a closed magnetic conductive path in cooperation with the second end portion 411, based on the above structure, the pressing portion can move synchronously with the magnetic conductive member, and can achieve force separation at the same time, and the structure is compact.
In some specific embodiments, the first magnetic conducting apparatus 300 includes a plurality of first magnetic conducting members 310, referring to fig. 1, the plurality of first magnetic conducting members 310 are disposed along the width direction of the battery cell 600, as shown in the figure, the first magnetic conducting apparatus 300 includes two first magnetic conducting members 310, the first magnetic conducting members 310 are disposed on two sides of the width direction of the battery cell 600, referring to fig. 8, for another example, the plurality of first magnetic conducting members 310 are disposed along the length direction of the battery cell 600, as shown in the figure, the first magnetic conducting apparatus 300 includes three first magnetic conducting members 310, three first magnetic conducting members 310 are disposed along the length direction of the battery cell 600, and for another example, the plurality of first magnetic conducting members 310 are disposed along both the length direction and the width direction of the battery cell 600, specifically, the first magnetic conducting apparatus 300 includes six first magnetic conducting members 310 that are divided into two rows along the width direction of the battery cell 600, and each row includes three first magnetic conducting members 310. The second magnetic conducting device 300 also includes a plurality of second magnetic conducting members 410, and the number and the positions of the second magnetic conducting members 410 are arranged corresponding to the first magnetic conducting members 310.
By providing the plurality of first magnetic conductive members 310 and the second magnetic conductive members 410, the heating capability can be enhanced, and each region of the battery cell 600 can be uniformly heated.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention 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 gist of the present invention. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Electricity core hot pressing equipment, its characterized in that includes:
the pressing device comprises a first pressing piece and a second pressing piece, the first pressing piece is used for bearing the battery cell, and the second pressing piece is arranged opposite to the first pressing piece;
the driving device is connected to at least one of the first pressing piece and the second pressing piece and is used for driving the first pressing piece and the second pressing piece to relatively approach or separate;
the first magnetic conduction device comprises at least one first magnetic conduction piece, and the first magnetic conduction piece is connected to the first pressing piece;
the second magnetic conduction device comprises at least one second magnetic conduction piece, and the second magnetic conduction piece is connected to the second pressing piece;
the coil is connected with at least one of the first magnetic conduction piece and the second magnetic conduction piece;
when the first pressing piece and the second pressing piece are relatively close to the pressing position, the first magnetic conduction piece and the second magnetic conduction piece are relatively close to each other, so that the first magnetic conduction piece and the second magnetic conduction piece form a closed magnetic conduction path.
2. The cell hot pressing apparatus of claim 1, wherein a first end of the first magnetic conductive member away from the first pressing member includes a first magnetic conductive portion, and a second end of the second magnetic conductive member away from the second pressing member includes a second magnetic conductive portion, wherein when the first pressing member and the second pressing member are relatively close to a pressing position, the first magnetic conductive portion and the second magnetic conductive portion are horizontally staggered and adjacently disposed, and a highest position of the first magnetic conductive portion is not lower than a lowest position of the second magnetic conductive portion.
3. The cell hot pressing apparatus according to claim 2, wherein the first end includes a plurality of first magnetic conductive portions disposed at intervals, and the second end includes a plurality of second magnetic conductive portions disposed at intervals, where when the first pressing member and the second pressing member are relatively close to each other to the pressing position, the second magnetic conductive portions are inserted between adjacent first magnetic conductive portions, and the first magnetic conductive portions are inserted between adjacent second magnetic conductive portions.
4. The cell hot pressing apparatus of claim 1, wherein the first magnetically permeable member and the second magnetically permeable member are configured to: when the first pressing piece and the second pressing piece are relatively close to the pressing position, the first magnetic conduction piece is far away from the first end part of the first pressing piece, and the first magnetic conduction piece and the second magnetic conduction piece are far away from the second pressing piece and are arranged in a staggered and adjacent mode along the horizontal direction, and the highest position of the first end part is not lower than the lowest position of the second end part.
5. The cell hot pressing apparatus of claim 1, wherein the first magnetically permeable member and the second magnetically permeable member are both connected to the coil.
6. The cell hot pressing apparatus of claim 1, wherein the first pressing member has a first pressing surface, the second pressing member has a second pressing surface, the first magnetic conductive member is connected to a third end of the first pressing member and perpendicular to the first pressing surface, and the second magnetic conductive member is connected to a fourth end of the second pressing member and perpendicular to the second pressing surface.
7. The cell hot-pressing apparatus of claim 1, wherein the first pressing member includes a base portion and a pressing portion, the pressing portion has a pressing surface for supporting the cell, the first magnetic conductive member and the pressing portion are both connected to the base portion, and the first magnetic conductive member and the pressing portion are disposed separately along a pressure transmission direction.
8. The cell core hot pressing apparatus according to claim 7, wherein a slot is disposed on a side of the pressing portion opposite to the pressing surface, and the first magnetic conductive member is connected to a third end of the first pressing member and inserted into the slot.
9. The cell hot-pressing apparatus of claim 7, wherein the first pressing member further includes a supporting portion, the pressing portion is connected to the base portion through the supporting portion to form an installation space between the pressing portion and the base portion, and the first magnetic conductive member is connected to a third end portion of the first pressing member, extends into the installation space, and is perpendicular to the pressing surface.
10. The cell hot-pressing apparatus according to claim 1, wherein the first magnetic conducting device includes a plurality of the first magnetic conducting members, the second magnetic conducting device includes a plurality of the second magnetic conducting members, and the second magnetic conducting members are disposed corresponding to the first magnetic conducting members, wherein the plurality of first magnetic conducting members are sequentially disposed along a length direction of the cell, and/or the plurality of first magnetic conducting members are sequentially disposed along a width direction of the cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840331.0A CN115207434A (en) | 2022-07-18 | 2022-07-18 | Electricity core hot pressing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840331.0A CN115207434A (en) | 2022-07-18 | 2022-07-18 | Electricity core hot pressing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115207434A true CN115207434A (en) | 2022-10-18 |
Family
ID=83582327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210840331.0A Pending CN115207434A (en) | 2022-07-18 | 2022-07-18 | Electricity core hot pressing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115207434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2022
- 2022-07-18 CN CN202210840331.0A patent/CN115207434A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101496265B (en) | Linear motor with force ripple compensation | |
| KR102141793B1 (en) | Method of manufacturing a stator of a permanent magnet synchronous machine and a permanent magnet synchronous machine | |
| CN1161802C (en) | Controllable inductor | |
| CN115207434A (en) | Electricity core hot pressing equipment | |
| CN104883016A (en) | Double-stator magnetic field modulation permanent magnet motor | |
| CN209912980U (en) | Electricity core hot press unit | |
| CN110649782B (en) | Primary iron core staggered driving structure, linear motor and numerical control equipment | |
| CN107026519B (en) | Stator assembly, and motor and electronic pump having the same | |
| US20220089196A1 (en) | Levitation, propulsion and guidance integrated magnetic levitation system and improvement method of guidance and levitation | |
| CN106981968A (en) | The continuous pole dual-side flat plate type permanent-magnetism linear motor of independent winding | |
| KR20010081637A (en) | Structure for preventing vibration of lamination sheet in stator of linear motor | |
| CN217789540U (en) | Motion system and linear motor | |
| CN115915523A (en) | Heating assembly, heating device and electric core hot-pressing equipment | |
| CN218448012U (en) | Electricity core hot pressing equipment | |
| WO2021238056A1 (en) | Linear motor | |
| CN218867175U (en) | Split type electricity core hot pressing equipment | |
| CN102739010A (en) | Integer-slot bilayer ring-winding linear electric motor | |
| KR101001482B1 (en) | Moving magnet type linear actuator | |
| CN217768473U (en) | Electricity core hot pressing system | |
| CN115621522A (en) | Split type electricity core hot pressing equipment | |
| CN102739122B (en) | Magnetic suspension flat motor with primary structure on both sides | |
| CN113517799B (en) | Linear motor | |
| CN111953173A (en) | Magnetic-levitation train and long stator linear motor and long stator structure thereof | |
| JP3807831B2 (en) | Heater for laminated body of rubber and metal plate | |
| CN219106218U (en) | Hot pressing equipment for electric core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518110 301, Building B, Comlong Science Park, Guansheng 5th Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province (one photo multiple site enterprise) 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. |