CN117207577A - Hot press capable of solving problem of indentation of battery cell - Google Patents
Hot press capable of solving problem of indentation of battery cell Download PDFInfo
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- CN117207577A CN117207577A CN202311465376.5A CN202311465376A CN117207577A CN 117207577 A CN117207577 A CN 117207577A CN 202311465376 A CN202311465376 A CN 202311465376A CN 117207577 A CN117207577 A CN 117207577A
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- 238000007373 indentation Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 174
- 238000007731 hot pressing Methods 0.000 claims abstract description 129
- 238000003825 pressing Methods 0.000 claims abstract description 67
- 241000209219 Hordeum Species 0.000 claims description 28
- 235000007340 Hordeum vulgare Nutrition 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000007248 cellular mechanism Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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Abstract
The invention discloses a hot press capable of solving the problem of cell indentation, which comprises a frame, a servo hydraulic device, a plurality of hot pressing devices and a plurality of counterweight mechanisms, wherein the hot pressing device at the uppermost layer comprises a bottom plate and an upper hot pressing device; the lowest layer hot pressing device comprises a bottom plate and a lower hot pressing device; the hot pressing devices of the middle layer comprise a bottom plate, a lower hot pressing device and an upper hot pressing device; the lower hot pressing device comprises a cell supporting mechanism, a lower cell supporting mechanism and a lower hot pressing plate mechanism; the upper hot pressing device comprises an upper anti-sticking layer mechanism, an upper hot pressing plate mechanism and an upper cylinder pressing mechanism, and the upper cylinder pressing mechanism and the upper anti-sticking layer mechanism are both arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism, and a cylinder of the upper cylinder pressing mechanism can penetrate through the upper hot pressing plate mechanism to be pressed on the battery cell from top to bottom. The invention solves the indentation problem during hot pressing of the battery cell and ensures the excellent rate of the battery cell after hot pressing.
Description
Technical Field
The invention belongs to the technical field of electric core hot pressing equipment, and particularly relates to a hot press capable of solving the problem of electric core indentation.
Background
The existing lithium battery lamination machine can carry out hot pressing after slitting a plurality of stacks, and the battery core hot pressing carries out hot pressing shaping on the bare cell by setting reasonable time, temperature and pressure, so as to control the thickness of the bare cell and prevent relative displacement of the positive electrode piece and the negative electrode piece. After the feeding manipulator is placed into the battery cell, the battery cell is supported by the lower hot pressing plate and the heating lower lifting assembly, the battery cell is pressed by the upper hot pressing plate and the lower pressing assembly, then the battery cell is heated to a certain temperature, and meanwhile, a certain pressure is applied to the battery cell to press and shape the loose battery cell.
Because the existing hot pressing plate mechanism divides the lower hot pressing plate and the heating lower lifting assembly into two parts (the joint of the lower hot pressing plate and the heating lower lifting assembly is inevitably provided with a gap), the upper hot pressing plate and the lower pressing assembly are also divided into two parts (the joint of the upper hot pressing plate and the lower pressing assembly is inevitably provided with a gap), after the battery cell is placed in the battery cell, the lower hot pressing plate heats the lower lifting assembly to support the battery cell, the lower pressing assembly in the middle of upper hot pressing presses the battery cell, then the upper hot pressing plate and the lower hot pressing plate are combined to carry out hot pressing on the battery cell, and the gap enables the battery cell to be heated unevenly after hot pressing, so that an indentation is left on the battery cell during hot pressing.
In view of this, there is a need to design a hot press that solves the die indentation problem.
Disclosure of Invention
The invention mainly solves the technical problem of providing a hot press capable of solving the problem of indentation of a battery cell and ensuring the excellent rate of the battery cell after hot pressing.
In order to solve the technical problems, the invention adopts a technical scheme that: the invention provides a hot press capable of solving the problem of cell indentation, which comprises a frame, a servo hydraulic device, a plurality of hot pressing devices and a plurality of counterweight mechanisms, wherein the servo hydraulic device, the hot pressing devices and the counterweight mechanisms are arranged on the frame; the hot pressing device is driven to press down along the frame by a servo hydraulic device;
the uppermost hot pressing device comprises a bottom plate and an upper hot pressing device arranged on the lower surface of the bottom plate; the lowest layer hot pressing device comprises a bottom plate and a lower hot pressing device arranged on the upper surface of the bottom plate; the hot pressing devices of the middle layer all comprise a bottom plate, a lower hot pressing device and an upper hot pressing device, wherein the lower hot pressing device is positioned above the bottom plate, and the upper hot pressing device is positioned below the bottom plate;
the lower hot pressing device comprises a battery core supporting mechanism, a lower battery core supporting mechanism and a lower hot pressing plate mechanism, wherein the lower hot pressing plate mechanism is fixedly arranged on the upper surface of the bottom plate, the battery core is supported from the lower part through the battery core supporting mechanism, the battery core is pressed from the upper part through the lower battery core supporting mechanism, and highland barley paper is padded on the lower surface of the battery core through the lower battery core supporting mechanism;
the upper hot pressing device comprises an upper anti-sticking layer mechanism, an upper hot pressing plate mechanism and an upper cylinder pressing mechanism, wherein the upper cylinder pressing mechanism and the upper anti-sticking layer mechanism are both arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism, and a cylinder of the upper cylinder pressing mechanism can penetrate through the upper hot pressing plate mechanism to be pressed on the battery cell from top to bottom.
Further, a stroke compensation mechanism is further arranged above the uppermost hot pressing device, the stroke compensation mechanism comprises a compensation block and a compensation driving unit capable of driving the compensation block to translate, and the compensation block is driven to move to the position right below the servo hydraulic device through the compensation driving unit and can be in butt joint with the lower end of the servo hydraulic device.
Further, the supporting cell mechanism comprises a supporting plate, a Y-direction supporting driving unit and a Z-direction supporting driving unit, wherein the supporting plate extends along the X direction and is positioned above the lower hot pressing plate mechanism, the Y-direction supporting driving unit drives the supporting plate to translate along the Y direction, the Z-direction supporting driving unit drives the supporting plate to lift along the Z direction, and the cell is supported from the lower side.
Further, the lower voltage core mechanism comprises a lower pressing plate, an X downward pressing driving unit and a Z downward pressing driving unit, wherein the lower pressing plate is located above a supporting plate for supporting the electric core mechanism, extends along the Y direction, is driven by the X downward pressing driving unit to translate along the X direction, is driven by the Z downward pressing driving unit to lift along the Z direction, and is used for pressing down the electric core from the upper side.
Further, the lower layer holds in palm electric core mechanism includes highland barley paper, presss from both sides paper seat, can drive press from both sides paper seat along Y to the Y that moves in translation to press from both sides paper drive unit and can drive press from both sides paper seat along Z to the Z that goes up and down to press from both sides paper drive unit, highland barley paper is located the top of the backup pad that supports electric core mechanism, highland barley paper's both sides are pressed from both sides tight by press from both sides paper seat, Y to press from both sides paper drive unit with Z to press from both sides paper drive unit and be located highland barley paper's both sides arch or tighten through Y to pressing from both sides paper drive unit drive highland barley paper goes up and down through Z to pressing from both sides paper drive unit.
Further, the upper hot pressing plate mechanism is provided with a Y-direction cavity extending along the Y direction and a Z-direction through hole extending along the Z direction;
the upper cylinder pressing mechanism comprises a cylinder, a mounting frame and a Z-direction cylinder pressing driving unit, wherein the power output end of the Z-direction cylinder pressing driving unit is fixedly arranged on the mounting frame, and the cylinder is fixedly arranged below the mounting frame;
the mounting frame penetrates through the Y-direction cavity, and the cylinder is positioned in the Z-direction through hole;
the mounting frame is driven to move downwards through the Z-direction cylinder compression driving unit so as to drive the cylinder to press against the upper surface of the battery cell.
Further, the mounting frame is a rectangular frame, and the Z-direction cylinder compacting driving unit is provided with two groups which are respectively positioned on two opposite side surfaces of the rectangular frame; the cylinders are located on the other opposite sides of the rectangular frame.
Further, the left side and the right side of the upper anti-sticking layer mechanism are respectively and fixedly arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism;
the upper anti-sticking layer mechanism comprises anti-sticking paper and two anti-sticking frames, the anti-sticking frames comprise a fixed frame, a movable frame and a plurality of springs, the upper ends of the springs are connected to the fixed frame, and the lower ends of the springs are connected to the movable frame;
the anti-sticking paper machine is characterized in that an upper guide roller is arranged on the movable frame, a lower guide roller and a clamping assembly are arranged on the fixed frame, the clamping assembly comprises two clamping seats, the edge of the anti-sticking paper is fixed between the two clamping seats, the anti-sticking paper sequentially bypasses the lower guide roller and the upper guide roller, and the anti-sticking paper is located under the upper hot pressing plate mechanism.
Further, the bottom of the machine frame is fixed to the lowest hot pressing device, the counterweight mechanism is a counterweight cylinder, the upper end of the counterweight cylinder is fixed to the hot pressing device, the bottom of the lowest counterweight cylinder is fixed to the bottom of the machine frame, and the upper end of the lowest counterweight cylinder is fixed to the next lower hot pressing device.
The beneficial effects of the invention are as follows:
according to the invention, the battery core is fixed through the battery core supporting mechanism, the lower battery core machine and the lower layer battery core supporting mechanism during feeding, the battery core supporting mechanism and the lower battery core supporting mechanism can exit from the hot pressing range during hot pressing, and the battery core is pressed mainly by the cylinder of the upper cylinder pressing mechanism, the upper hot pressing mechanism and the lower hot pressing mechanism at the moment, namely, the press plate of the upper hot pressing mechanism and the cylinder of the upper cylinder pressing mechanism are contacted with the upper surface of the battery core during hot pressing, and the gap between the press plate of the upper hot pressing mechanism and the upper surface of the battery core is very small (namely, the length of the gap is very short) due to the small area of the cylinder, and meanwhile, the press plate of the lower hot pressing mechanism and the lower surface of the battery core are entirely contacted without gaps, so that after hot pressing, the surface of the battery core basically has no indentation, and therefore, the problem that the surface of the battery core has indentation after hot pressing in the prior art can be solved, and the excellent rate of the battery core is ensured.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of the structure of the frame of the present invention;
FIG. 3 is one of the schematic structural views of the hot press apparatus for the intermediate layer of the present invention;
FIG. 4 is a second schematic view of the hot press apparatus for the intermediate layer of the present invention;
FIG. 5 is a front view of a hot press apparatus for an intermediate layer of the present invention;
FIG. 6 is a schematic view of the travel compensation mechanism of the present invention;
FIG. 7 is a schematic view of the structure of the present invention at the support cell mechanism and the lower support cell mechanism;
FIG. 8 is a schematic view of the structure of the supporting cell mechanism of the present invention;
FIG. 9 is a schematic diagram of the lower-layer battery cell supporting mechanism of the present invention;
FIG. 10 is a schematic diagram of the lower core mechanism of the present invention;
FIG. 11 is a schematic view of the structure of the lower plate mechanism of the present invention;
FIG. 12 is one of the schematic structural views of the upper cylinder pressing mechanism and the upper hot press mechanism of the present invention;
FIG. 13 is a second schematic view of the structure of the upper cylinder pressing mechanism and the upper hot press mechanism of the present invention;
FIG. 14 is a schematic view of the structure of the upper cylinder hold-down mechanism of the present invention;
FIG. 15 is a schematic structural view of the upper release layer mechanism of the present invention;
FIG. 16 is a schematic view of the structure of a portion of the upper release layer mechanism of the present invention;
FIG. 17 is a partial cross-sectional view along the X-direction of the upper release layer mechanism of the present invention;
the reference numerals are as follows:
a frame 1;
a servo hydraulic device 2;
a counterweight mechanism 3;
a bottom plate 41;
the upper hot press device 42, the upper anti-sticking layer mechanism 421, the anti-sticking paper 4211, the anti-sticking frame 4212, the fixed frame 42121, the movable frame 42122, the spring 42123, the upper guide roller 42124, the lower guide roller 42125, the clamping seat 42126, the upper hot press plate mechanism 422, the Y-direction cavity 4221, the Z-direction through hole 4222, the upper cylinder pressing mechanism 423, the cylinder 4231, the mounting frame 4232 and the Z-direction cylinder pressing driving unit 4233;
lower hot press device 43, support cell mechanism 431, support plate 4311, Y-direction support driving unit 4312, Z-direction support driving unit 4313, lower cell mechanism 432, lower platen 4321, X-direction lower driving unit 4322, Z-direction lower driving unit 4323, lower layer cell mechanism 433, highland barley paper 4331, paper holder 4332, Y-direction paper holder driving unit 4333, Z-direction paper holder driving unit 4334, lower hot press mechanism 434;
a stroke compensation mechanism 5, a compensation block 51, and a compensation driving unit 52.
Detailed Description
The following specific embodiments of the invention are described in order to provide those skilled in the art with an understanding of the present disclosure. The invention may be embodied in other different forms, i.e., modified and changed without departing from the scope of the invention.
Examples: the hot press capable of solving the problem of cell indentation comprises a frame 1, a servo hydraulic device 2, a plurality of hot pressing devices and a plurality of counterweight mechanisms 3, wherein the servo hydraulic device 2, the plurality of hot pressing devices and the plurality of counterweight mechanisms are arranged on the frame, the servo hydraulic device is arranged at the upper part of the frame, all the hot pressing devices are arranged at intervals along the height direction of the frame, the upper end of each counterweight mechanism is respectively connected with the hot pressing device, and the lower end of each counterweight mechanism is connected with the bottom of the hot pressing device or the frame; the hot pressing device is driven to press down along the frame by a servo hydraulic device;
as shown in fig. 1 to 5, the uppermost hot press apparatus includes a bottom plate 41 and an upper hot press apparatus 42 mounted to a lower surface of the bottom plate; the lowest hot press device comprises a bottom plate 41 and a lower hot press device 43 arranged on the upper surface of the bottom plate; the hot pressing devices of the middle layer comprise a bottom plate 41, a lower hot pressing device 43 and an upper hot pressing device 42, wherein the lower hot pressing device is positioned above the bottom plate, and the upper hot pressing device is positioned below the bottom plate;
as shown in fig. 1 to 5 and 11, the lower hot pressing device 43 includes a core supporting mechanism 431, a lower core supporting mechanism 432, a lower core supporting mechanism 433 and a lower hot pressing mechanism 434, wherein the lower hot pressing mechanism is fixedly installed on the upper surface of the bottom plate, the core is supported from below by the core supporting mechanism, the core is pressed from above by the lower core supporting mechanism, and highland barley paper is padded on the lower surface of the core by the lower core supporting mechanism;
as shown in fig. 1 to 5, the upper hot press device 42 includes an upper anti-sticking layer mechanism 421, an upper hot press plate mechanism 422, and an upper cylinder pressing mechanism 423, both of which are mounted on the lower surface of the base plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism, and a cylinder of the upper cylinder pressing mechanism can penetrate through the upper hot pressing plate mechanism to be pressed on the battery cell from top to bottom.
As shown in fig. 1 and 6, a stroke compensation mechanism 5 is further arranged above the uppermost hot press device, and the stroke compensation mechanism comprises a compensation block 51 and a compensation driving unit 52 capable of driving the compensation block to translate, and the compensation block is driven by the compensation driving unit to move to the position right below the servo hydraulic device and can be in butt joint with the lower end of the servo hydraulic device. The compensation block has a certain height, so that the problem of insufficient stroke of the servo hydraulic device can be solved. In this embodiment, the compensation driving unit is a driving cylinder, but is not limited thereto, as long as it can be driven to translate.
As shown in fig. 7 and 8, the supporting cell mechanism 431 includes a supporting plate 4311, a Y-direction supporting driving unit 4312 and a Z-direction supporting driving unit 4313, where the supporting plate extends along the X-direction and is located above the lower hot pressing plate mechanism, the supporting plate is driven by the Y-direction supporting driving unit to translate along the Y-direction, and the supporting plate is driven by the Z-direction supporting driving unit to lift along the Z-direction and support the cell from below. The position A in fig. 7 shows the support plate in the middle position, and serves as a support for the battery cell; and B, when in hot pressing, the supporting plate is withdrawn to the edge position outside the battery cell.
In this embodiment, the Y-direction support driving unit and the Z-direction support driving unit are provided with two groups, which are respectively located at the left and right ends of the support plate.
In the present embodiment, the Y-direction support driving unit 4312 and the Z-direction support driving unit 4313 are driving cylinders, but the present invention is not limited thereto, and the support plates can be driven to move to corresponding positions.
As shown in fig. 3 and 10, the lower core mechanism 432 includes a lower pressing plate 4321, an X-pressing driving unit 4322, and a Z-pressing driving unit 4323, where the lower pressing plate is located above the support plate supporting the core mechanism, and extends along the Y direction, the lower pressing plate is driven by the X-pressing driving unit to translate along the X direction, and the pressing plate is driven by the Z-pressing driving unit to lift along the Z direction, and press the core from above.
In this embodiment, the lower core mechanism is provided with two groups, which are respectively located on a diagonal line of the bottom plate.
In the present embodiment, the X-direction pressing driving unit 4322 and the Z-direction pressing driving unit 4323 are driving cylinders, but the present invention is not limited thereto, and the pressing plate can be driven to move to the corresponding positions.
As shown in fig. 7 and 9, the lower-layer core supporting mechanism 433 includes highland barley paper 4331, a paper clamping seat 4332, a Y-direction paper clamping driving unit 4333 capable of driving the paper clamping seat to translate along the Y-direction, and a Z-direction paper clamping driving unit 4334 capable of driving the paper clamping seat to lift along the Z-direction, the highland barley paper is located above the supporting plate of the core supporting mechanism, two sides of the highland barley paper are clamped by the paper clamping seat, the Y-direction paper clamping driving unit and the Z-direction paper clamping driving unit are located at two sides of the highland barley paper, the highland barley paper is driven to arch or tighten through the Y-direction paper clamping driving unit, and the highland barley paper is driven to lift through the Z-direction paper clamping driving unit.
The highland barley paper is in a tense state when the battery core is hot-pressed by the matching of the Y-direction paper clamping driving unit and the Z-direction paper clamping driving unit; the supporting battery core mechanism is in a loose state when the supporting battery core mechanism ascends to support the battery core, so that the highland barley paper is prevented from being broken by the ascending of the supporting battery core mechanism, and the interference is avoided.
In this embodiment, the order of highland barley paper, backup pad and holding down plate is: the utility model is composed of a lower pressing plate, highland barley paper and a supporting plate from top to bottom.
In the present embodiment, the Y-direction paper clamping driving unit 4333 and the Z-direction paper clamping driving unit 4334 are driving cylinders, but the present invention is not limited thereto, and the highland barley paper can be driven to move to the corresponding positions.
In this embodiment, as shown in fig. 12 to 14, the upper thermocompression bonding mechanism 422 is provided with a Y-direction cavity 4221 extending in the Y-direction and a Z-direction through hole 4222 extending in the Z-direction;
the upper cylinder pressing mechanism 423 comprises a cylinder 4231, a mounting frame 4232 and a Z-direction cylinder pressing driving unit 4233, wherein the power output end of the Z-direction cylinder pressing driving unit is fixed on the mounting frame, and the cylinder is fixedly arranged below the mounting frame;
the mounting frame penetrates through the Y-direction cavity, and the cylinder is positioned in the Z-direction through hole and can move up and down along the Z-direction through hole;
the mounting frame is driven to move downwards through the Z-direction cylinder compression driving unit so as to drive the cylinder to press against the upper surface of the battery cell.
In this embodiment, the Z-direction cylinder pressing driving unit is a driving cylinder, but is not limited thereto, as long as the cylinder can be driven to move to a corresponding position.
The mounting frame is a rectangular frame, and the Z-direction cylinder compacting driving units are provided with two groups and are respectively positioned on two opposite side surfaces of the rectangular frame; the cylinders are located on the other opposite sides of the rectangular frame.
The left side and the right side of the upper anti-sticking layer mechanism are respectively and fixedly arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism.
As shown in fig. 4 and 5 and fig. 15 to 17, the upper anti-sticking layer mechanism 421 comprises anti-sticking paper 4211 and two anti-sticking frames 4212, wherein the anti-sticking frames comprise a fixed frame 42121, a movable frame 42122 and a plurality of springs 42123, the upper ends of the springs are connected to the fixed frame, and the lower ends of the springs are connected to the movable frame;
the anti-sticking paper is characterized in that an upper guide roller 42124 is arranged on the movable frame, a lower guide roller 42125 and a clamping assembly are arranged on the fixed frame, the clamping assembly comprises two clamping seats 42126, the edge of the anti-sticking paper is fixed between the two clamping seats (such as through the cooperation and fixation of a bolt and a threaded hole), the anti-sticking paper sequentially bypasses the lower guide roller and the upper guide roller, and the anti-sticking paper is positioned under the upper hot pressing plate mechanism.
The function of the upper anti-sticking layer mechanism is similar to that of the lower battery cell supporting mechanism: when the cylinder of the upper cylinder pressing mechanism does not extend, the anti-sticking paper is in a tight state, the upper surface of the anti-sticking paper is propped against when the cylinder extends, due to the arrangement of the spring, the spring is stretched, the cylinder can downwards arch the anti-sticking paper, and similarly, the diaphragm on the surface of the battery cell can be punctured when the mechanism is not arranged.
In this embodiment, the bottom hot press device of the lowest layer is fixed at the bottom of the frame, the counterweight mechanism is a counterweight cylinder, the upper end of the counterweight cylinder is fixed with the hot press device, the bottom of the lowest counterweight cylinder is fixed at the bottom of the frame, and the upper end is fixed on the hot press device of the next lower layer.
In this embodiment, the highland barley paper of lower floor support electric core mechanism and the antiseized paper of upper strata antiseized layer mechanism contact with the surface of electric core, avoid upper hot pressing board mechanism and lower hot pressing board mechanism's hot pressboard direct and electric core surface contact, can cause the electric core to glue at the problem of hot pressboard after the hot pressing.
The working principle and the working process of the invention are as follows:
the battery cells are respectively put into the hot pressing device of the middle layer and the hot pressing device of the lowest layer, and now taking the hot pressing device of the third layer as an example, the battery cell supporting mechanism 431 is lifted to support the battery cells (at the moment, two clamping seats are relatively close, namely, highland barley paper is in a state of being arched upwards in the middle), the lower battery cell supporting mechanism 432 is lifted to support the battery cells, and the lower battery cell supporting mechanism 433 is lifted to support the battery cells; simultaneously, the counterweight cylinder of the counterweight mechanism 3 descends to a certain height, so that an upper hot press device of a hot press device of the upper layer descends to the surface of a lower hot press device of the lower layer, a cylinder of the upper cylinder pressing mechanism 423 stretches out to press the upper surface of the battery core, then a supporting plate for supporting the battery core mechanism 431 exits from the hot press range (namely, the position B in FIG. 7), and the lower battery core mechanism 432 horizontally moves along the X direction and exits from the hot press range; the cylinder of the upper cylinder pressing mechanism 423 is extended and acts on the release paper, the spring is stretched, and the release paper is opened; at this time, the electric core is fixed by the cylinder of the upper cylinder pressing mechanism 423 and the hot pressing plate of the upper hot pressing plate mechanism 422 and the lower hot pressing plate mechanism 434; then the compensation block of the stroke compensation mechanism moves to the lower side of the servo hydraulic device, the servo hydraulic device presses against the compensation block to apply pressure downwards, all the hot pressing devices are driven to move downwards integrally (the lowest hot pressing device is removed from being fixed), the battery cells are hot pressed, and the battery cell hot pressing process is completed;
because the pressing plate of the upper hot pressing mechanism and the cylinder of the upper cylinder pressing mechanism 423 are in contact with the upper surface of the battery cell during hot pressing, the area of the cylinder is small, the gap between the cylinder and the pressing plate of the upper hot pressing mechanism is small (namely the length of the gap is short), and meanwhile, the pressing plate of the lower hot pressing mechanism is in whole contact with the lower surface of the battery cell, and no gap exists, so that the surface of the battery cell basically has no indentation after hot pressing, and the problem that the surface of the battery cell has indentation after hot pressing in the prior art can be solved;
in addition, the counterweight mechanism can also be used for counteracting the weight of part of the servo hydraulic device and each layer of hot pressing device, and plays a role in balancing the weight of the counterweight.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures made by the description of the invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the invention.
Claims (9)
1. Can solve hot press of electric core indentation problem, its characterized in that: the hot press comprises a frame (1), a servo hydraulic device (2), a plurality of hot press devices and a plurality of counterweight mechanisms (3), wherein the servo hydraulic device is arranged at the upper part of the frame, all the hot press devices are arranged at intervals along the height direction of the frame, the upper end of each counterweight mechanism is respectively connected with the hot press device, and the lower end of each counterweight mechanism is connected with the bottom of the hot press device or the frame; the hot pressing device is driven to press down along the frame by a servo hydraulic device;
the uppermost hot press device comprises a bottom plate (41) and an upper hot press device (42) arranged on the lower surface of the bottom plate; the lowest layer hot press device comprises a bottom plate (41) and a lower hot press device (43) arranged on the upper surface of the bottom plate; the hot pressing devices of the middle layer comprise a bottom plate (41), a lower hot pressing device (43) and an upper hot pressing device (42), wherein the lower hot pressing device is positioned above the bottom plate, and the upper hot pressing device is positioned below the bottom plate;
the lower hot pressing device (43) comprises a cell supporting mechanism (431), a lower cell supporting mechanism (432), a lower cell supporting mechanism (433) and a lower hot pressing plate mechanism (434), wherein the lower hot pressing plate mechanism is fixedly arranged on the upper surface of the bottom plate, the cell is supported from the lower part through the cell supporting mechanism, the cell is pressed from the upper part through the lower cell supporting mechanism, and highland barley paper is padded on the lower surface of the cell through the lower cell supporting mechanism;
the upper hot pressing device (42) comprises an upper anti-sticking layer mechanism (421), an upper hot pressing plate mechanism (422) and an upper cylinder pressing mechanism (423), and the upper cylinder pressing mechanism and the upper anti-sticking layer mechanism are both arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism, and a cylinder of the upper cylinder pressing mechanism can penetrate through the upper hot pressing plate mechanism to be pressed on the battery cell from top to bottom.
2. The hot press of claim 1, wherein the die indentation problem is solved by: and a stroke compensation mechanism (5) is further arranged above the uppermost hot pressing device, and comprises a compensation block (51) and a compensation driving unit (52) capable of driving the compensation block to translate, and the compensation block is driven to move to the position right below the servo hydraulic device through the compensation driving unit and can be in butt joint with the lower end of the servo hydraulic device.
3. The hot press of claim 1, wherein the die indentation problem is solved by: the battery cell supporting mechanism (431) comprises a supporting plate (4311), a Y-direction supporting driving unit (4312) and a Z-direction supporting driving unit (4313), wherein the supporting plate extends along the X direction and is positioned above the lower hot pressing plate mechanism, the supporting plate is driven to translate along the Y direction through the Y-direction supporting driving unit, and the supporting plate is driven to lift along the Z direction through the Z-direction supporting driving unit, so that the battery cell is supported from the lower side.
4. The hot press of claim 1, wherein the die indentation problem is solved by: the lower voltage core mechanism (432) comprises a lower pressing plate (4321), an X-direction downward pressing driving unit (4322) and a Z-direction downward pressing driving unit (4323), wherein the lower pressing plate is positioned above a supporting plate for supporting the voltage core mechanism, extends along the Y direction, is driven by the X-direction downward pressing driving unit to translate along the X direction, is driven by the Z-direction downward pressing driving unit to lift along the Z direction, and is used for pressing down the voltage core from the upper side.
5. The hot press of claim 1, wherein the die indentation problem is solved by: the lower layer holds in palm electric core mechanism (433) include highland barley paper (4331), press from both sides paper seat (4332), can drive press from both sides paper seat along Y to press from both sides paper drive unit (4333) of translation and can drive press from both sides paper seat along Z to the Z that goes up and down to press from both sides paper drive unit (4334), highland barley paper is located the top of the backup pad of supporting electric core mechanism, the both sides of highland barley paper are pressed from both sides tight by press from both sides paper seat, Y to press from both sides paper drive unit with Z to press from both sides paper drive unit and be located highland barley paper both sides tight, press from both sides paper drive unit drive highland barley paper arch or tighten through Y, press from both sides paper drive unit drive highland barley paper through Z to go up and down.
6. The hot press of claim 1, wherein the die indentation problem is solved by: the upper hot pressing plate mechanism (422) is provided with a Y-direction cavity (4221) extending along the Y direction and a Z-direction through hole (4222) extending along the Z direction;
the upper cylinder pressing mechanism (423) comprises a cylinder (4231), a mounting frame (4232) and a Z-direction cylinder pressing driving unit (4233), wherein the mounting frame is fixed at the power output end of the Z-direction cylinder pressing driving unit, and the cylinder is fixedly arranged below the mounting frame;
the mounting frame penetrates through the Y-direction cavity, and the cylinder is positioned in the Z-direction through hole;
the mounting frame is driven to move downwards through the Z-direction cylinder compression driving unit so as to drive the cylinder to press against the upper surface of the battery cell.
7. The hot press of claim 6, wherein the die indentation problem is solved by: the mounting frame is a rectangular frame, and the Z-direction cylinder compacting driving units are provided with two groups and are respectively positioned on two opposite side surfaces of the rectangular frame; the cylinders are located on the other opposite sides of the rectangular frame.
8. The hot press of claim 1, wherein the die indentation problem is solved by: the left side and the right side of the upper anti-sticking layer mechanism are respectively and fixedly arranged on the lower surface of the bottom plate; the upper anti-sticking layer mechanism is positioned below the upper hot pressing plate mechanism;
the upper anti-sticking layer mechanism (421) comprises anti-sticking paper (4211) and two anti-sticking frames (4212), each anti-sticking frame comprises a fixed frame (42121), a movable frame (42122) and a plurality of springs (42123), the upper ends of the springs are connected to the fixed frame, and the lower ends of the springs are connected to the movable frame;
the anti-sticking paper machine is characterized in that an upper guide roller (42124) is arranged on the movable frame, a lower guide roller (42125) and a clamping assembly are arranged on the fixed frame, the clamping assembly comprises two clamping seats (42126), the edge of the anti-sticking paper is fixed between the two clamping seats, the anti-sticking paper sequentially bypasses the lower guide roller and the upper guide roller, and the anti-sticking paper is located under the upper hot pressing plate mechanism.
9. The hot press of claim 1, wherein the die indentation problem is solved by: the bottom of the machine frame is fixed to the hot press device of the lowest layer, the counterweight mechanism is a counterweight cylinder, the upper end of the counterweight cylinder is fixed to the hot press device, the bottom of the lowermost counterweight cylinder is fixed to the bottom of the machine frame, and the upper end of the lowermost counterweight cylinder is fixed to the hot press device of the next lower layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311465376.5A CN117207577B (en) | 2023-11-07 | 2023-11-07 | Hot press capable of solving problem of indentation of battery cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311465376.5A CN117207577B (en) | 2023-11-07 | 2023-11-07 | Hot press capable of solving problem of indentation of battery cell |
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| CN117207577B CN117207577B (en) | 2024-03-26 |
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| CN116749572A (en) * | 2023-05-31 | 2023-09-15 | 厦门合南道智能科技有限公司 | Cell pressurizing mechanism and control method |
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| CN216506939U (en) * | 2021-10-25 | 2022-05-13 | 深圳市和合自动化有限公司 | Double-layer hot-pressing device |
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| CN117207577B (en) | 2024-03-26 |
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