CN116749572A - Cell pressurizing mechanism and control method - Google Patents
Cell pressurizing mechanism and control method Download PDFInfo
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- CN116749572A CN116749572A CN202310634522.6A CN202310634522A CN116749572A CN 116749572 A CN116749572 A CN 116749572A CN 202310634522 A CN202310634522 A CN 202310634522A CN 116749572 A CN116749572 A CN 116749572A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 89
- 238000007731 hot pressing Methods 0.000 claims abstract description 58
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 description 40
- 238000005259 measurement Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The application discloses a cell pressurizing mechanism and a control method, which belong to the technical field of cell pressurizing and comprise a frame assembly, wherein a footstock is fixedly arranged at the top of the frame assembly, a ball screw pair is fixedly arranged at the top of the footstock, one side of the ball screw pair is in transmission connection with a servo motor, a pressure head is fixedly arranged at the bottom end of the ball screw pair, and a switching module is fixedly arranged at the top of an inner cavity of the frame assembly. According to the application, the servo motor is used for controlling the top ball screw pair to work so as to drive the pressure head to move downwards to extrude the bottom pressing block, the pressing block can extrude the electric cores at the tops of the plurality of hot pressing modules, synchronous extrusion of the multi-electric core main body is realized through the plurality of groups of hot pressing modules, when the hot pressing modules are supported through the weight eliminating cylinder, the supporting precision of the plurality of groups of hot pressing modules can be adjusted, the pressing treatment effect of the electric core main body with errors is adapted, the moving stability of the upper pressing plate assembly is improved, and the pressing treatment stability of the electric core main body is ensured.
Description
Technical Field
The application belongs to the technical field of cell pressurization, and particularly relates to a cell pressurization mechanism and a control method.
Background
In the production process of the lithium ion battery, after the production of the pole pieces is completed, the positive pole piece, the negative pole piece and the diaphragm are assembled and manufactured in a winding or lamination mode, and then the battery core is required to be subjected to hot-press shaping. The electric core is subjected to hot press shaping, so that the flatness of the lithium ion battery can be improved, the thickness of the electric core meets the requirement, and the electric core has high consistency; on the other hand, the membrane folds can be eliminated, air in the battery core is removed, the membrane and the positive and negative pole pieces are tightly attached together, the diffusion distance of lithium ions is shortened, and the internal resistance of the battery is reduced.
Chinese patent application CN216804513U discloses a multi-layered hot press apparatus, which comprises a control device, a pressurizing assembly, a hot press frame, and a heating assembly: the control device is respectively and electrically connected with the pressurizing assembly and the heating assembly in a matching way: the pressurizing assembly is arranged above the hot-pressing frame, and the heating assembly is arranged in the hot-pressing frame; wherein the heating assembly is provided with at least one group: the hot pressing frame comprises a pressurizing frame and a heating frame arranged below the pressurizing frame, wherein the pressurizing frame and the heating frame are coaxially arranged, the number of layers of the heating frame is the same as the number of the heating assemblies, and each layer of the heating assemblies are overlapped: wherein, the hot pressing frame is provided with at least one layer of heating frame. Through the multi-layer arrangement of the heating frame, the hot-pressing efficiency is improved, and a plurality of electric cores can be simultaneously hot-pressed; the pressure received by each layer is the same, so that the quality of hot pressing is ensured, the stamping force of the multi-layer hot pressing assembly is single in the existing cell pressurizing treatment process, and therefore, the control strength of the pressure is weaker, and there is room for improvement.
Disclosure of Invention
The application aims at: in order to solve the problems that the stamping force of the multi-layer hot-pressing assembly is single, the control strength of the pressure is weak, and the improvement space exists, the battery cell pressurizing mechanism and the control method are provided.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the utility model provides a electricity core pressurizing mechanism, includes the frame assembly, frame assembly top fixed mounting has the footstock, footstock top fixed mounting has ball screw pair, and the vice one side transmission of ball screw is connected with servo motor, the vice bottom fixed mounting of ball screw has the pressure head, and frame assembly inner chamber top fixed mounting has the switch module, and switches the module and be located the pressure head bottom, frame assembly inner chamber sliding connection has a plurality of hot pressing module, and holds the electricity core main part in the hot pressing module, and hot pressing module one side fixed mounting has insulation resistance testing mechanism for detect the open circuit resistance of electricity core main part, and hot pressing module one side fixed mounting has the heavy cylinder of eliminating, is used for eliminating every layer of hot pressing module self gravity assurance and applies to the accuracy of electricity core main part pressure.
Through the dead weight eliminating cylinder and the insulation resistance testing mechanism, the regulation and control effect of the pressurizing pressure can be achieved through judgment of the dead weight eliminating cylinder and the insulation resistance.
As a further description of the above technical solution:
the automatic pressing device comprises a pressing block, a pressing head, a pressing block, a supporting plate, a pressing block, a pressing plate, a pressing head, a pressing plate, a supporting plate and a pressing plate, wherein the pressing block and the pressing plate are arranged on the bottom of the pressing block, the pressing block is connected with the pressing head in a matched mode, the supporting plate is connected with the bottom of the pressing block in a driving mode, guide rail bases are fixedly arranged on two sides of the bottom of the supporting plate, a first linear guide rail is connected in the guide rail bases in a sliding mode, and the first linear guide rail is fixedly arranged on the top of the pressing plate and used for controlling the pressing block to press down through movement of the supporting plate.
As a further description of the above technical solution:
the four corners department at the top of the switching block is provided with a limit seat, an inner cavity of the limit seat is in threaded connection with a stud, the stud is fixedly connected to one side of the top of the supporting disk, the outer side of the stud is in threaded connection with a limit nut, the top of the limit nut is attached to the bottom of the switching block, a spring is sleeved outside the stud, and two ends of the spring are attached to the switching block and one side of the supporting disk respectively, and are used for controlling the elasticity of the spring through the limit nut.
As a further description of the above technical solution:
the pressing plate top fixed mounting has the support frame, support frame one side fixed mounting has the switching cylinder, switching cylinder piston rod sliding connection is in the slide hole of seting up in support frame one side, and switching cylinder piston rod one end laminating mutually with supporting shoe one side that supporting plate one side top was set firmly.
As a further description of the above technical solution:
the hot pressing module comprises an upper mounting plate and a lower mounting plate, wherein one side of the upper mounting plate is fixedly connected with one side of a weight eliminating cylinder, the weight eliminating cylinder is fixedly arranged on one side of the top of the lower mounting plate at a corresponding position, an upper pressing plate assembly is fixedly arranged at the bottom of the upper mounting plate, a lower pressing plate assembly is arranged at the top of the lower mounting plate, a pressure sensor is fixedly arranged at the bottom of the lower pressing plate assembly, and the pressure sensor is fixedly arranged at the top of the lower mounting plate.
As a further description of the above technical solution:
and a battery cell detection sensor is fixedly arranged on one side of the top of the lower mounting plate and is positioned at the top of the lower pressing plate assembly.
As a further description of the above technical solution:
the heating device is characterized in that a plurality of heating rods are fixedly arranged in the upper pressing plate assembly, a temperature sensor is fixedly arranged on one side of the upper pressing plate assembly, and the lower pressing plate assembly and the upper pressing plate assembly are identical in structure.
As a further description of the above technical solution:
the thickness measuring sensor is fixedly arranged at the bottom of the upper mounting plate, the reference block is fixedly arranged at the top of the lower mounting plate, and the thickness of the battery cell main body is calibrated through the thickness of the reference block.
As a further description of the above technical solution:
the corresponding positions of the periphery of the inner cavity of the frame assembly, which correspond to the upper pressing plate assembly, are fixedly connected with second linear guide rails, and one side of each second linear guide rail is fixedly connected with one side of the upper pressing plate assembly and used for limiting and guiding.
As a further description of the above technical solution:
the control method using the cell pressurizing mechanism comprises the following steps: the method specifically comprises the following steps:
s101, after a cell detection sensor detects that a cell is put in place, a weight-reducing cylinder descends to adjust the pressure of the cell until the pressure of the cell is reduced to counteract the bearing weight;
s102, after the switching module is switched to a working position, the servo motor drives the ball screw pair to drive the pressure head, a gap is reserved between the pressure head and the switching module, and the servo motor operates in a speed mode and can operate at a speed V max Operating, the pressure head is contacted with the switching module and then continuously used for operating by V max The speed operation is carried out until the spring of the switching module is compressed and then contacts with the upper mounting plate on the top layer, and the servo motor in the process judges whether the motor moves to the corresponding position or not according to the reading position;
s103, after the cell main body is subjected to pressure, the pressure is controlled in sections, so that the effect of the cell after hot pressing is ensured, and when the pressure is 0-N 1 At the time, the servo motor is in V 1 Operating at a speed of N 1 -N 2 When the servo is in V 2 Speed operation ······ When the pressure is Nn-1-Nn, the servo is operated at Vn speed, and when the pressure value reaches the set pressure N Is provided with Then the speed is maintained at 0, in the process, vmax > V 1 ＞V 2··· ＞Vn＞0，0＜N 1 ＜N2＜ ··· ＜N Is provided with ；
And S104, after the set pressure is reached, the speed is kept at 0, the servo motor is controlled to make corresponding adjustment through the pressure value fed back by the pressure sensor, and after the set pressure is reached, the servo motor is switched to operate in a torque mode, so that the applied pressure is ensured to be constant as the set pressure.
In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:
1. according to the application, when hot pressing is needed, the servo motor is used for controlling the top ball screw pair to work so as to drive the pressure head to move downwards to extrude the bottom pressing block, and the pressing block can extrude the battery cores at the tops of the plurality of hot pressing modules, so that synchronous extrusion of the multi-battery-core main body can be realized through the plurality of groups of hot pressing modules, and when the hot pressing modules are supported through the weight-eliminating cylinder, the supporting precision of the plurality of groups of hot pressing modules can be adjusted, the pressing treatment effect of the battery-core main body with errors is adapted, the moving stability of the upper pressing plate assembly is improved, and the pressing treatment stability of the battery-core main body is ensured.
2. According to the application, the piston rod of the switching cylinder drives the supporting tray to move through the first linear guide rail at the bottom, so that the switching block is pulled out from the bottom of the pressing block, the transmission regulation and control of the top pressure are realized through the movable switching block, the pressure of the spring can be regulated through screwing the limit nut to move outside the screw, the bearing regulation and control of the top output pressure are realized through the pressure control of the spring, the switching assembly is supported conveniently when the pressure is not pressed, the switching assembly is suspended from the pressing plate in the air and a safe distance is reserved when the position is switched, and the controllable regulation of the pressure speed and the rapid regulation and control of the pressing stroke are ensured.
3. According to the application, the heating plate can be heated through the designed hot-pressing module, the temperature detection sensor is used for detecting the temperature and feeding back to the upper computer, the upper computer is used for comparing the temperature of the hot-pressing plate with the set value temperature, the accurate temperature adjustment of the heating plate is realized, the accuracy and the processing efficiency in the test can be improved through the designed thickness measurement sensor and the electric core detection sensor, the pressing thickness can be calibrated rapidly through changing the reference blocks with different thicknesses, and the pressing processing effect is improved.
4. According to the application, the sectional pressure control of the battery cells can be realized through the designed battery cell pressurizing control method, meanwhile, the quality of the battery cells after hot pressing can be improved through detecting the battery cell data, meanwhile, the stability and the excessive pressure in the pressurizing process can be ensured, the quality of the battery cells after hot pressing can be ensured, and the pressurizing control effect on the battery cell main body can be improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a cell pressurizing mechanism according to the present application;
fig. 2 is a schematic side structural view of a cell pressurizing mechanism according to the present application;
FIG. 3 is a schematic diagram of a switching module of a cell pressurizing mechanism according to the present application;
FIG. 4 is a schematic diagram of a hot pressing module of a cell pressurizing mechanism according to the present application;
fig. 5 is a schematic diagram of an assembly structure of an upper platen assembly of a cell pressurizing mechanism according to the present application;
FIG. 6 is a schematic diagram of a frame assembly of a cell pressurizing mechanism according to the present application;
fig. 7 is a schematic diagram of an assembly structure of a servo motor of a cell pressurizing mechanism according to the present application.
Legend description:
1. a ball screw pair; 2. a servo motor; 3. a frame assembly; 4. an insulation resistance value testing mechanism; 5. a hot pressing module; 501. an upper mounting plate; 502. a thickness measuring sensor; 503. a reference block; 504. an upper platen assembly; 505. a lower platen assembly; 506. a cell detection sensor; 507. a lower mounting plate; 6. a heavy-load eliminating cylinder; 7. a switching module; 701. briquetting; 702. switching the cylinder; 703. a first linear guide rail; 704. a spring; 705. a limit seat; 706. a limit nut; 707. a support frame; 708. a switching block; 709. a tray; 710. pressing the plate; 8. a second linear guide rail; 9. a pressure head; 10. a top base; 11. a cell body; 12. a pressure sensor; 13. a heating rod; 14. a temperature sensor.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Referring to fig. 1-7, the present application provides a technical solution: the utility model provides a electricity core pressurizing mechanism, includes frame assembly 3, frame assembly 3 top fixed mounting has footstock 10, footstock 10 top fixed mounting has ball screw pair 1, and ball screw pair 1 one side transmission is connected with servo motor 2, ball screw pair 1 bottom fixed mounting has pressure head 9, and frame assembly 3 inner chamber top fixed mounting has switch module 7, and switch module 7 is located pressure head 9 bottom, frame assembly 3 inner chamber sliding connection has a plurality of hot pressing modules 5, and the interior battery core main part 11 that has of hot pressing module 5, and hot pressing module 5 one side fixed mounting has insulation resistance test mechanism 4 for detect the open circuit resistance of electricity core main part 11, and hot pressing module 5 one side fixed mounting has the heavy cylinder 6 that disappears, and wherein the gas circuit of heavy cylinder 6 that disappears selects for use high accuracy gas circuit, guarantees the gas delivery pressure regulating precision, is used for eliminating every layer of hot pressing module 5 self gravitation and guarantees the accuracy of applying to electricity core main part 11 pressure, the corresponding position of pressing plate assembly 504 all fixedly connected with second linear guide rail 504 all around the frame assembly 3 inner chamber, and one side of pressing plate 8 carries out spacing guide with the upper linear guide assembly one side fixedly connected with.
The implementation mode specifically comprises the following steps: when needs carry out hot pressing, can drive pressure head 9 downwardly moving extrusion bottom briquetting 701 through servo motor 2 control top ball screw pair work, briquetting 701 can extrude the electric core at a plurality of hot pressing module 5 tops, thereby can realize the synchronous extrusion to many electric core main part 11 through the hot pressing module 5 that the multiunit set up, and when supporting hot pressing module 5 through the heavy cylinder of eliminating 6, can adjust the supporting accuracy of multiunit hot pressing module 5, adapt to the pressfitting treatment effect of electric core main part 11 that has the error, and through the second linear guide 8 of design, can improve the stability that top board subassembly 504 removed, thereby can guarantee the pressure treatment stability to electric core main part 11.
Example 2
Referring to fig. 2 and 3, unlike embodiment 1, in order to avoid the problem that the pressure regulation is inconvenient during pressing and the pressure regulation is needed based on the condition of the cell pressure during the multi-layer cell extrusion, the application also discloses a cell pressurizing mechanism, the switching module 7 comprises a pressing block 701 and a pressing plate 710, the bottom of the pressing plate 710 is attached to the top of the hot pressing module 5 at the corresponding position, the top of the pressing block 701 is connected with the bottom of the pressing head 9, the bottom of the pressing block 701 is attached with a switching block 708, the bottom of the switching block 708 is in transmission connection with a bearing disc 709, both sides of the bottom of the bearing disc 709 are fixedly provided with guide rail seats, and a first linear guide rail 703 is in sliding connection in the guide rail seats, and the sliding of the first linear guide rail 703 outside the guide rail seats is more stable through the designed guide rail seats and the first linear guide rail 703, so that shaking and shifting can be avoided, the first linear guide 703 is fixedly arranged at the top of the pressing plate 710 and is used for controlling the pressing force of the pressing block 701 through the movement of the bearing plate 709, four corners of the top of the switching block 708 are respectively provided with a limit seat 705, the inner cavity of the limit seat 705 is in threaded connection with a stud which is fixedly connected with one side of the top of the bearing plate 709, the outer side of the stud is in threaded connection with a limit nut 706, the top of the limit nut 706 is attached to the bottom of the switching block 708, a spring 704 is sleeved outside the stud, two ends of the spring 704 are respectively attached to one side of the switching block 708 and one side of the bearing plate 709 and are used for controlling the elasticity of the spring 704 through the limit nut 706, the control spring 704 can regulate and control the supporting strength through the limit of the limit nut 706 through the designed limit nut 706 and the control spring 704, so that the regulating processing capacity to the pressure can be controlled, the switching cylinder 702 is fixedly arranged on one side of the support frame 707, a piston rod of the switching cylinder 702 is slidably connected in a sliding hole formed in one side of the support frame 707, and one end of the piston rod of the switching cylinder 702 is attached to one side of a support block fixedly arranged on the top of one side of the tray 709.
The implementation mode specifically comprises the following steps: through the switching module 7 of design, can drive the switching cylinder 702 piston rod and hold the tray 709 and remove through the first linear guide 703 in bottom, thereby can make the switching block 708 take out from briquetting 701 bottom, thereby can realize the conduction regulation and control to top pressure through mobilizable switching block 708, and can adjust the pressure to spring 704 through twisting limit nut 706 and remove outside the screw rod, be favorable to realizing the regulation and control of accepting to top output pressure through the pressure control of spring 704, thereby can be convenient for support the switching module when not pressing, unsettled and leave the safe distance with pressfitting board 710 when being convenient for the switching position, guarantee the controllable regulation and the quick regulation and control of pressurization stroke of pressure velocity.
Example 3
Referring to fig. 4 and fig. 5, unlike embodiments 1 and 2, based on the fact that in the pressurization process, different electrical cores need to be subjected to sensing judgment due to different pressure meter conditions, in the case that the conventional pressurization device does not have pressurization processing capability, the embodiment of the application further discloses an electrical core pressurization mechanism, the hot pressing module 5 comprises an upper mounting plate 501 and a lower mounting plate 507, one side of the upper mounting plate 501 is fixedly connected with one side of a weight-eliminating cylinder 6, the weight-eliminating cylinder 6 is fixedly mounted on one side of the top of the lower mounting plate 507 at a corresponding position, an upper pressing plate assembly 504 is fixedly mounted at the bottom of the upper mounting plate 501, a lower pressing plate assembly 505 is arranged at the top of the lower mounting plate 507, a pressure sensor 12 is fixedly mounted at the bottom of the lower pressing plate assembly 505, a cell detection sensor 506 is fixedly mounted at one side of the top of the lower mounting plate assembly 507, a thickness measurement sensor 502 is fixedly mounted at the bottom of the upper mounting plate 501, a thickness measurement module is fixedly mounted at the bottom of the lower mounting plate according to the top of the plate, the thickness measurement module is used for the thickness measurement module 503, and the cell detection module is fixedly mounted at the top of the lower mounting plate 507 through the reference block 503, and the cell detection module is fixedly mounted at the top of the upper mounting plate 507;
a plurality of heating rods 13 are fixedly installed in the upper pressing plate assembly 504, a temperature sensor 14 is fixedly installed on one side of the upper pressing plate assembly 504, and the lower pressing plate assembly 505 and the upper pressing plate assembly 504 have the same structure.
The implementation mode specifically comprises the following steps: through the hot pressing module 5 of design, can heat the hot plate through heating rod 13, temperature detection sensor carries out temperature detection and feeds back to the host computer, and the host computer compares hot plate temperature and set point temperature, realizes the accurate regulation to the temperature of hot plate to accuracy and the treatment effeciency when can improving the test through thickness measurement sensor 502 and the electric core detection sensor 506 of design, and through the benchmark piece 503 of design, can mark pressfitting thickness fast through the benchmark piece 503 of changing different thickness, improve pressfitting treatment effect.
Example 2
The control method using the cell pressurizing mechanism comprises the following steps: the method specifically comprises the following steps:
s101, after a cell detection sensor 506 detects that a cell is put in place, a weight-reducing cylinder 6 descends to adjust the cylinder pressure until the bearing gravity is counteracted;
s102, after the switching module 7 is switched to a working position, the servo motor 2 drives the ball screw pair 1 to drive the pressure head 9, a gap is reserved between the pressure head 9 and the switching module 7, and the servo motor 2 operates in a speed mode and can operate at a speed V max The operation is continued by V after the pressure head 9 contacts with the switching module 7 max The speed runs until the spring 704 of the switching module 7 is compressed and then contacts the upper mounting plate 501 on the top layer, and the servo motor 2 judges whether to move to the corresponding position according to the reading position;
s103, after the cell main body 11 receives pressure, the pressure is controlled in sections, so that the effect of the hot-pressed cell is ensured, and when the pressure is 0-N 1 At the time, the servo motor 2 is set at V 1 Operating at a speed of N 1 -N 2 When the servo is in V 2 Speed operation ······ When the pressure is Nn-1-Nn, the servo is operated at Vn speed, and when the pressure value reaches the set pressure N Is provided with Then the speed is maintained at 0, in the process, vmax > V 1 ＞V 2··· ＞Vn＞0，0＜N 1 ＜N2＜ ··· ＜N Is provided with ；
And S104, after the set pressure is reached, the speed is kept at 0, the servo motor 2 is controlled to make corresponding adjustment through the pressure value fed back by the pressure sensor 12, and after the set pressure is reached, the servo motor 2 is switched to operate in a torque mode, so that the applied pressure is ensured to be constant as the set pressure.
Working principle: when the hot pressing machine is used, when hot pressing is needed, the servo motor 2 is used for controlling the top ball screw pair to work so as to drive the pressing head 9 to move downwards to press the bottom pressing block 701, the pressing block 701 presses the electric cores at the tops of the plurality of hot pressing modules 5, synchronous pressing of the multi-electric core main body 11 is realized through the plurality of groups of hot pressing modules 5, and when the hot pressing modules 5 are supported through the weight eliminating cylinder 6, the supporting precision of the plurality of groups of hot pressing modules 5 is adjusted;
the piston rod of the switching cylinder 702 drives the supporting disc 709 to move through the first linear guide rail 703 at the bottom, so that the switching block 708 is pulled out from the bottom of the pressing block 701, the transmission regulation and control of the top pressure are realized through the movable switching block 708, and the pressure of the spring 704 is regulated by screwing the limit nut 706 to move outside the screw, so that the supporting regulation and control of the top output pressure are realized through the pressure control of the spring 704;
the heating plate is heated through the heating rod 13, the temperature detection sensor detects the temperature and feeds back to the upper computer, the upper computer compares the temperature of the hot pressing plate with the set value temperature, the temperature of the heating plate is accurately regulated, and the accuracy and the processing efficiency during the test are improved through the designed thickness measurement sensor 502 and the designed cell detection sensor 506.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (10)
1. The utility model provides an electricity core pressurizing mechanism, includes frame assembly (3), its characterized in that, frame assembly (3) top fixed mounting has footstock (10), footstock (10) top fixed mounting has ball screw pair (1), and ball screw pair (1) one side transmission is connected with servo motor (2), ball screw pair (1) bottom fixed mounting has pressure head (9) for improve pressurization intensity after pressurizing through pressure head (9) contact, and frame assembly (3) inner chamber top fixed mounting has switch module (7), and switch module (7) are located pressure head (9) bottom, frame assembly (3) inner chamber sliding connection has a plurality of hot pressing module (5), and has electric core main part (11) in hot pressing module (5) for carry out pressurization control to telecommunication main part (11), and hot pressing module (5) one side fixed mounting has insulation resistance test mechanism (4), is used for detecting the open circuit resistance of electric core main part (11), and hot pressing module (5) one side fixed mounting has the heavy cylinder (6) of eliminating through the motion support of heavy cylinder (6) of eliminating each layer of electricity core module (5), and is applied to accurate pressure of electricity core main part (11) of guaranteeing through the heavy weight of eliminating.
2. The cell pressurizing mechanism according to claim 1, wherein the switching module (7) comprises a pressing block (701) and a pressing plate (710), the bottom of the pressing plate (710) is attached to the top of the hot pressing module (5) at the corresponding position, the top of the pressing block (701) is connected with the bottom of the pressing head (9), the bottom of the pressing block (701) is attached with a switching block (708), the bottom of the switching block (708) is in transmission connection with a supporting plate (709), guide rail seats are fixedly mounted on two sides of the bottom of the supporting plate (709), first linear guide rails (703) are slidably connected in the guide rail seats, and the first linear guide rails (703) are fixedly mounted on the top of the pressing plate (710) and are used for controlling the pressing force of the pressing block (701) through movement of the supporting plate (709).
3. The cell pressurizing mechanism according to claim 2, wherein four corners of the top of the switching block (708) are respectively provided with a limiting seat (705), an inner cavity of the limiting seat (705) is in threaded connection with a stud, the stud is fixedly connected to one side of the top of the supporting disc (709), a limiting nut (706) is in threaded connection with the outer side of the stud, the top of the limiting nut (706) is attached to the bottom of the switching block (708), a spring (704) is sleeved outside the stud, and two ends of the spring (704) are attached to the switching block (708) and one side of the supporting disc (709) respectively, and are used for controlling the elasticity of the spring (704) through the limiting nut (706).
4. A cell pressurizing mechanism according to claim 3, wherein a supporting frame (707) is fixedly installed at the top of the pressing plate (710), a switching cylinder (702) is fixedly installed at one side of the supporting frame (707), a piston rod of the switching cylinder (702) is slidably connected in a sliding hole formed in one side of the supporting frame (707), and one end of the piston rod of the switching cylinder (702) is attached to one side of a supporting block fixedly installed at the top of one side of the supporting plate (709).
5. The cell pressurizing mechanism according to claim 4, wherein the hot pressing module (5) comprises an upper mounting plate (501) and a lower mounting plate (507), one side of the upper mounting plate (501) is fixedly connected with one side of a weight eliminating cylinder (6), the weight eliminating cylinder (6) is fixedly arranged on one side of the top of the lower mounting plate (507) at a corresponding position, an upper pressing plate assembly (504) is fixedly arranged at the bottom of the upper mounting plate (501), a lower pressing plate assembly (505) is arranged at the top of the lower mounting plate (507), a pressure sensor (12) is fixedly arranged at the bottom of the lower pressing plate assembly (505), and the pressure sensor (12) is fixedly arranged at the top of the lower mounting plate (507).
6. The cell pressurizing mechanism according to claim 5, wherein a cell detection sensor (506) is fixedly installed on one side of the top of the lower mounting plate (507), and the cell detection sensor (506) is located on the top of the lower pressing plate assembly (505).
7. The cell pressurizing mechanism according to claim 6, wherein a plurality of heating rods (13) are fixedly installed in the upper pressure plate assembly (504), a temperature sensor (14) is fixedly installed on one side of the upper pressure plate assembly (504), and the lower pressure plate assembly (505) and the upper pressure plate assembly (504) have the same structure.
8. The cell pressurizing mechanism according to claim 7, wherein a thickness measuring sensor (502) is fixedly mounted at the bottom of the upper mounting plate (501), and a reference block (503) is fixedly mounted at the top of the lower mounting plate (507) for calibrating the thickness of the cell main body (11) by the thickness of the reference block (503).
9. The cell pressurizing mechanism according to claim 8, wherein the second linear guide rail (8) is fixedly connected to the corresponding positions of the periphery of the inner cavity of the frame assembly (3) corresponding to the upper pressing plate assembly (504), and one side of the second linear guide rail (8) is fixedly connected with one side of the upper pressing plate assembly (504) for limiting and guiding.
10. The cell pressing mechanism according to claim 9, further comprising a control method using the cell pressing mechanism: the method specifically comprises the following steps:
s101, after a battery core detection sensor (506) detects that the battery core is put in place, a control box is used for controlling a weight-reducing air cylinder (6) to work, a piston rod of the weight-reducing air cylinder (6) descends to adjust air cylinder pressure to be fully supported, and then gravity borne by the movable top of the weight-reducing air cylinder (6) is counteracted to improve pressurization control precision;
s102, after the switching module (7) is switched to a working position, the servo motor (2) drives the ball screw pair (1) to drive the pressure head (9), the servo motor (2) controls the top ball screw pair to work to drive the pressure head (9) to move downwards to extrude the bottom pressing block (701), the pressing block (701) extrudes the electric cores at the tops of the plurality of hot pressing modules (5), synchronous extrusion of the multi-electric core main body (11) is realized through the hot pressing modules (5) arranged in multiple groups, a gap is reserved between the pressure head (9) and the switching module (7), and the servo motor (2) operates in a speed mode and can operate at a speed V max The operation is continued by V after the pressure head (9) contacts with the switching module (7) max The speed operation is carried out until the spring (704) of the switching module (7) is compressed and then contacts with the upper mounting plate (501) on the top layer, and the servo motor (2) in the process judges whether the user walks to the corresponding position or not according to the reading position;
s103, after the cell main body (11) is subjected to pressure, the pressure is controlled in sections, so that the effect of the hot-pressed cell is ensured, and when the pressure is 0-N 1 When the servo motor (2) is operated by V 1 Operating at a speed of N 1 -N 2 When the servo is in V 2 Speed operation ······ When the pressure is Nn-1-Nn, the servo is operated at Vn speed, and when the pressure value reaches the set pressure N Is provided with Then hold at 0 speed, in the process, V max ＞V 1 ＞V 2··· ＞Vn＞0，0＜N 1 ＜N2＜ ··· ＜N Is provided with ；
S104, after the set pressure is reached, the speed is kept at 0, the servo motor (2) is controlled to make corresponding adjustment through the pressure value fed back by the pressure sensor (12), and after the set pressure is reached, the servo motor (2) is switched to operate in a torque mode, so that the applied pressure is ensured to be constant as the set pressure;
s105, drive the support tray (709) with the piston rod of the switching cylinder (702) and move through the first linear guide rail (703) in the bottom, make the switching block (708) draw out from briquetting (701) bottom, realize the conduction regulation and control to top pressure through mobilizable switching block (708), move outside the screw rod through screwing limit nut (706) and adjust the pressure to spring (704), realize the regulation and control of accepting to top output pressure through the pressure control of spring (704), heat the hot plate through heating rod (13), temperature detection sensor carries out temperature detection and feeds back to the host computer, the host computer compares hot pressboard temperature and set point temperature, realize the accurate regulation to the temperature of hot plate.
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| CN202310634522.6A CN116749572A (en) | 2023-05-31 | 2023-05-31 | Cell pressurizing mechanism and control method |
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