A method for integrated fabrication of solid-state batteries using 3D printing

Abstract

This invention discloses a method for integrated 3D printing of solid-state batteries, comprising the following steps: S1, taking positive electrode, negative electrode, electrolyte, and current collector materials, and preparing positive electrode printing slurry, negative electrode printing slurry, electrolyte printing slurry, and current collector printing slurry; S2, using photosensitive resin to print the battery positive electrode shell on the printer base plate; S3, placing the positive electrode printing slurry, negative electrode printing slurry, electrolyte printing slurry, and current collector printing slurry into multiple nozzles of the 3D printer, and by switching nozzles, achieving layer-by-layer printing of the positive electrode current collector, positive electrode, electrolyte, negative electrode, and negative electrode current collector inside the battery positive electrode shell; S4, using photosensitive resin to print the battery negative electrode shell, completing the encapsulation; S5, compacting to obtain the solid-state battery. This invention can precisely control the thickness of the electrode and electrolyte layers, significantly improving the electrochemical performance of solid-state batteries, and providing a new, efficient, and feasible method for the current production and manufacturing of solid-state batteries, with a very wide range of applications.

Description

Technical Field

[0001] This invention belongs to the field of new energy and additive manufacturing technology, specifically relating to a method for integrated 3D printing to prepare solid-state batteries. Background Technology

[0002] With the continuous advancement of globalization and the ongoing depletion of non-renewable energy sources, humanity urgently needs to develop renewable energy. The transformation of energy structures and the development and utilization of new energy sources are now imperative for all countries. Lithium-ion batteries, as crucial components in energy storage, boast high energy density, light weight, low self-discharge efficiency, and long cycle life, making them the preferred energy accessory for electronic products. Their market is gradually expanding, with drones, robots, electric vehicles, and various smart devices all demanding lithium-ion batteries.

[0003] However, lithium-ion batteries still face significant challenges when meeting the increased range requirements of electric vehicles. The fundamental reason lies in the relatively low specific capacity of the graphite anode in lithium-ion batteries (372 mAh g). -1 Among numerous anode materials, lithium metal boasts a theoretical specific capacity as high as 3860 mAh g⁻¹. -1 Furthermore, its lowest reduction potential (-3.04 relative to the standard hydrogen electrode) and low density make it the optimal choice for anode materials in secondary lithium-ion batteries. However, when lithium is used as an anode material with a liquid electrolyte, some unsafe behaviors can occur. The formation of lithium dendrites can easily pierce the separator, triggering a short circuit inside the battery and generating heat. The accumulated heat, unable to dissipate in time, can lead to explosive release, posing safety hazards such as fire and explosion during battery use. The higher mechanical strength of solid-state electrolytes can inhibit the growth and piercing of lithium dendrites to some extent, making the application of lithium metal possible. Combining solid-state electrolytes with lithium metal anodes can improve the energy density of the battery while ensuring battery safety.

[0004] Currently, traditional solid-state battery fabrication primarily involves preparing different components separately under laboratory conditions using various processes, followed by assembly. This process is cumbersome, complex, and inefficient, making it unsuitable for mass production of solid-state batteries. 3D printing additive manufacturing technology enables layered printing, multi-material printing, and integrated printing. Its fused deposition modeling (FDM), stacked extrusion, layered solid fabrication, and digital light processing technologies hold promise for solving the critical interface problem in solid-state batteries, making it highly suitable for printing and fabricating complex solid-state batteries. However, current solid-state battery 3D printing technologies are not yet mature enough for practical engineering applications. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for 3D printing integrated preparation of solid-state batteries, which can precisely control the thickness of electrode and electrolyte layers, significantly improve the electrochemical performance of solid-state batteries, and provide a new, efficient and feasible method for the production and manufacturing of solid-state batteries with a wide range of applications.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for integrated fabrication of solid-state batteries using 3D printing, characterized in that the method includes the following steps:

[0007] Step S1: Take the positive electrode, negative electrode, electrolyte, and current collector materials, and prepare the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste, and current collector printing paste;

[0008] Step S2: Print the positive electrode shell of the battery on the printer base plate using photosensitive resin;

[0009] Step S3: Place the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste and current collector printing paste into multiple nozzles of the 3D printer respectively. By switching nozzles, the positive electrode current collector, positive electrode, electrolyte, negative electrode and negative electrode current collector are printed layer by layer inside the positive electrode shell of the battery.

[0010] Step S4: Print the negative electrode shell of the battery using photosensitive resin to complete the encapsulation;

[0011] Step S5: Compact the material to obtain a solid-state battery.

[0012] In the above-mentioned method for integrated 3D printing of solid-state batteries, when printing the positive current collector in step S3, ink direct writing 3D printing technology is used to print the positive current collector inside the positive electrode shell of the battery.

[0013] In step S3, when printing the positive electrode, slurry stacking extrusion 3D printing technology is used to print the positive electrode on the positive electrode current collector. The printer base plate is heated in combination with the infrared heating radiator above to heat the positive electrode material quickly during printing.

[0014] In step S3, when printing the electrolyte, slurry stacking extrusion 3D printing technology is used to print the electrolyte on the positive electrode. The printer base plate is heated in combination with the infrared heating radiator above to evaporate the solvent and obtain an electrolyte that is fully and tightly bonded to the positive electrode material.

[0015] In step S3, when printing the negative electrode, slurry stacking extrusion 3D printing technology is used to print the negative electrode on the electrolyte, and the printer base plate is heated in combination with the infrared heating radiator above to heat the material quickly during printing.

[0016] In step S3, when printing the negative current collector, ink direct writing 3D printing technology is used to print the negative current collector on the negative electrode.

[0017] In the above-mentioned method for 3D printing integrated solid-state battery fabrication, after printing the electrolyte in step S3 and before printing the negative electrode, pressure is applied to the surface of the electrolyte layer to compact the electrolyte layer.

[0018] In the above-mentioned method for 3D printing an integrated solid-state battery, the heating temperature of the printer base plate is 40℃~200℃.

[0019] The above-mentioned method for integrated 3D printing of solid-state batteries is characterized in that: the 3D printer used for printing the battery positive electrode shell, positive electrode current collector, positive electrode, electrolyte, negative electrode, negative electrode current collector, and battery negative electrode shell includes a frame and X-axis motion components, Y-axis motion components, Z-axis motion components, a nozzle gripping mechanism, and a nozzle placement frame mounted on the frame. The X-axis motion components are connected to an X-axis motion drive mechanism for driving the X-axis motion components, the Y-axis motion components are connected to a Y-axis motion drive mechanism for driving the Y-axis motion components, and the Z-axis motion components are connected to a Z-axis motion drive mechanism for driving the Z-axis motion components. A nozzle is placed on the nozzle placement frame, and the nozzle gripping mechanism is driven by the X-axis motion components, Y-axis motion components, and Z-axis motion components and is located above the nozzle.

[0020] The above-mentioned method for integrated 3D printing of solid-state batteries is characterized in that: the specific process of printing the positive electrode shell of the battery using photosensitive resin on the printer base plate in step S2 is as follows: the X-axis motion drive mechanism, the Y-axis motion drive mechanism, and the Z-axis motion drive mechanism respectively drive the X-axis motion component, the Y-axis motion component, and the Z-axis motion component, thereby driving the nozzle gripping mechanism to grip the nozzle containing the photosensitive resin and drive the nozzle to reach directly above the printing area; the Z-axis motion drive mechanism drives the Z-axis motion component to move, driving the nozzle to descend to the printing plane and print the positive electrode shell of the battery on the printer base plate; after printing is completed, the X-axis motion component, the Y-axis motion component, and the Z-axis motion component all return to zero, and the positive electrode shell of the battery is irradiated with ultraviolet light inside the 3D printer to solidify it;

[0021] The specific process described in step S3, which involves switching printheads to print the positive current collector, positive electrode, electrolyte, negative electrode, and negative current collector layer by layer inside the battery positive electrode shell, is as follows:

[0022] In step S301, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to grip the nozzle containing the current collector slurry and move the nozzle to directly above the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, causing the nozzle to descend to the printing plane and print the positive current collector inside the battery positive electrode shell. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero. The printer base plate and infrared heating radiator heat the positive current collector material to quickly solidify it during printing.

[0023] In step S302, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, which in turn drive the nozzle gripping mechanism to grip the nozzle containing the positive electrode slurry and move the nozzle to the top of the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, which moves the nozzle down to the printing plane and prints the positive electrode on the positive electrode current collector. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero. The printer base plate and infrared heating radiator heat the positive electrode material to quickly solidify it during printing.

[0024] In step S303, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to grip the nozzle containing electrolyte slurry and move the nozzle to directly above the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, causing the nozzle to descend to the printing plane and print electrolyte on the positive electrode. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero. The printer base plate and infrared heating radiator heat up, causing the solvent to evaporate and obtaining electrolyte that is fully and tightly bonded to the positive electrode material.

[0025] In step S304, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to grip the nozzle containing the negative electrode slurry and move the nozzle to directly above the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, causing the nozzle to descend to the printing plane and print the negative electrode on the electrolyte. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero. The printer base plate and infrared heating radiator heat the negative electrode material to quickly solidify it during printing.

[0026] In step S305, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to grip the nozzle containing the current collector slurry and move the nozzle to directly above the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, causing the nozzle to descend to the printing plane and print the negative electrode current collector inside the positive electrode shell of the battery. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero. The printer base plate and infrared heating radiator heat the negative electrode current collector material to quickly solidify during printing.

[0027] The specific process of printing the battery negative electrode shell using photosensitive resin in step S4 is as follows: The 3D printer executes the nozzle switching program. The X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to re-grip the nozzle containing the photosensitive resin and move the nozzle to the top of the printing area. The Z-axis motion drive mechanism drives the Z-axis motion component to move, causing the nozzle to descend to the printing plane and print the battery negative electrode shell on the printer base plate. After printing is completed, the X-axis motion component, Y-axis motion component, and Z-axis motion component all return to zero, and the battery negative electrode shell is irradiated with ultraviolet light inside the 3D printer to solidify it.

[0028] The above-mentioned method for 3D printing integrated solid-state battery fabrication is characterized in that: the nozzle includes an A-type nozzle (wider at the top and narrower at the bottom) and a B-type nozzle (wider at the bottom and narrower at the top) that can be staggered on a nozzle mounting frame. Both the A-type and B-type nozzles include a material tube fixing seat and a material tube, nozzle, and positioning structure disposed on the material tube fixing seat. The material tube fixing seat of the A-type nozzle is a T-shaped structure (wider at the top and narrower at the bottom). The positioning structure of the A-type nozzle includes three positioning beads arranged in an inverted equilateral triangle on the material tube fixing seat. The positioning structure of the B-type nozzle includes three positioning beads arranged in an equilateral triangle on the material tube fixing seat. Both the A-type and B-type nozzles have a locking slot at the middle position of the material tube fixing seat for the nozzle gripping mechanism to lock the nozzle.

[0029] The nozzle gripping mechanism includes a nozzle gripping mechanism base and an A-type nozzle gripping positioning groove, a B-type nozzle gripping positioning groove, and a rotation locking mechanism disposed on the nozzle gripping mechanism base. The A-type nozzle gripping positioning groove includes three positioning buckles arranged in an inverted equilateral triangle, and the B-type nozzle gripping positioning groove includes three positioning buckles arranged in an equilateral triangle. The three positioning buckles constituting the A-type nozzle gripping positioning groove and the three positioning buckles constituting the B-type nozzle gripping positioning groove are staggered. The rotation locking mechanism includes a motor, a drive gear connected to the output shaft of the motor, a driven gear meshing with the drive gear, and a rotating shaft connected to the driven gear. The end of the rotating shaft is connected to a stop bar for engaging with the buckle.

[0030] The above-mentioned method for integrated 3D printing of solid-state batteries is characterized in that: when switching nozzles during the printing process in steps S2, S3, and S4, the nozzle is gripped by a nozzle gripping mechanism. The specific method is as follows: First, the X-axis motion drive mechanism, Y-axis motion drive mechanism, and Z-axis motion drive mechanism drive the X-axis motion component, Y-axis motion component, and Z-axis motion component respectively, causing the nozzle gripping mechanism to approach the nozzle to be gripped and move to the position where the positioning bead is engaged with the positioning buckle, and the stop rod extends into the bayonet; then, the motor drives the drive gear to rotate, then drives the driven gear to rotate, then drives the rotating shaft to rotate, and then drives the stop rod to rotate 90°, so that the stop rod is fixed in the bayonet, thus locking the nozzle on the nozzle gripping mechanism.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. The method of the present invention has a simple process and can effectively solve the problem of the lack of simple and efficient manufacturing methods for solid-state batteries, providing a new, efficient and feasible method for the production and manufacturing of solid-state batteries.

[0033] 2. This invention can precisely control the thickness of the electrode and electrolyte layers, and print electrolyte materials in situ on the electrode layer, which can ensure full contact and tight adhesion between the electrode material and the electrolyte layer, improve the interface between the two, reduce the interface impedance, increase ion mobility, and significantly improve the electrochemical performance of solid-state batteries.

[0034] 3. This invention can be used to print battery materials that can be configured into slurries, making it applicable to a wide range of applications.

[0035] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0036] Figure 1 This is a flowchart of the method of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the 3D printer used in this invention;

[0038] Figure 3 This is a schematic diagram showing the arrangement of the three positioning buckles of the A-type nozzle gripping positioning slot and the three positioning buckles of the B-type nozzle gripping positioning slot on the nozzle gripping mechanism of the 3D printer used in this invention.

[0039] Figure 4 This is a schematic diagram of the structure of the type A and type B nozzles in the 3D printer used in this invention.

[0040] Figure 5 This is a schematic diagram showing the interaction between the nozzle gripping mechanism and the nozzle in the 3D printer used in this invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1—Frame; 2—Y-axis motion drive mechanism; 3—X-axis motion drive mechanism;

[0043] 4—Z-axis motion drive mechanism; 5—X-axis motion component; 6—Y-axis motion component;

[0044] 7—Z-axis moving parts; 8—Nozzle gripping mechanism; 8.2—Nozzle gripping mechanism base;

[0045] 8.3—Rotating shaft; 8.4—Stop bar; 8.5A—Type A nozzle gripping and positioning slot;

[0046] 8.5B—Type B nozzle gripping and positioning slot; 8.6—Motor; 8.7—Drive gear;

[0047] 8.8—Driven gear; 10—Nozzle; 10.1A—Type A nozzle;

[0048] 10.1B—Type B nozzle; 10.2—Positioning bead; 10.3—Feed tube;

[0049] 10.4 — Material tube fixing seat; 10.5 — Nozzle; 11 — Nozzle holder. Detailed Implementation

[0050] Example 1

[0051] like Figures 1-5 As shown, the method for 3D printing integrated fabrication of solid-state batteries according to the present invention includes the following steps:

[0052] Step S1: Take the positive electrode, negative electrode, electrolyte, and current collector materials, and prepare the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste, and current collector printing paste;

[0053] Step S2: Print the positive electrode shell of the battery on the printer base plate using photosensitive resin;

[0054] Step S3: Place the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste and current collector printing paste into multiple nozzles of the 3D printer respectively. By switching nozzles, the positive electrode current collector, positive electrode, electrolyte, negative electrode and negative electrode current collector are printed layer by layer inside the positive electrode shell of the battery.

[0055] Step S4: Print the negative electrode shell of the battery using photosensitive resin to complete the encapsulation;

[0056] Step S5: Compact the material to obtain a solid-state battery.

[0057] In this embodiment, the 3D printer used for printing the battery positive electrode shell, positive electrode current collector, positive electrode, electrolyte, negative electrode, negative electrode current collector, and battery negative electrode shell includes a frame 1 and X-axis motion component 5, Y-axis motion component 6, Z-axis motion component 7, nozzle gripping mechanism 8, and nozzle placement frame 11 mounted on the frame 1. The X-axis motion component 5 is connected to the X-axis motion drive mechanism 3 for driving the X-axis motion component 5, the Y-axis motion component 6 is connected to the Y-axis motion drive mechanism 2 for driving the Y-axis motion component 6, and the Z-axis motion component 7 is connected to the Z-axis motion drive mechanism 4 for driving the Z-axis motion component 7. The nozzle 10 is placed on the nozzle placement frame 11. The nozzle gripping mechanism 8 is driven by the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 and is located above the nozzle 10.

[0058] In this embodiment, the specific process of printing the positive battery shell on the printer base plate using photosensitive resin in step S2 is as follows: the X-axis motion drive mechanism 3, the Y-axis motion drive mechanism 2, and the Z-axis motion drive mechanism 4 respectively drive the X-axis motion component 5, the Y-axis motion component 6, and the Z-axis motion component 7, thereby driving the nozzle gripping mechanism 8 to grip the nozzle 10 containing the photosensitive resin and drive the nozzle 10 to the top of the printing area; the Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, driving the nozzle 10 down to the printing plane, and printing the positive battery shell on the printer base plate; after printing is completed, the X-axis motion component 5, the Y-axis motion component 6, and the Z-axis motion component 7 all return to zero, and the positive battery shell is irradiated with ultraviolet light inside the 3D printer to solidify it;

[0059] The specific process described in step S3, which involves switching printheads to print the positive current collector, positive electrode, electrolyte, negative electrode, and negative current collector layer by layer inside the battery positive electrode shell, is as follows:

[0060] In step S301, the 3D printer executes the nozzle switching program. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to grip the nozzle 10 containing the current collector slurry and bring the nozzle 10 directly above the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, bringing the nozzle 10 down to the printing plane. Using ink direct writing 3D printing technology, the positive current collector is printed inside the positive electrode shell of the battery. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero. The printer base plate and infrared heating radiator heat the positive current collector material to quickly solidify it during printing.

[0061] In practice, ink-to-ink 3D printing technology is used to print a 10μm thick positive current collector layer inside the positive electrode shell of the battery.

[0062] In step S302, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to grip the nozzle 10 containing the positive electrode slurry and bring the nozzle 10 directly above the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, bringing the nozzle 10 down to the printing plane. Using slurry stacking extrusion 3D printing technology, the positive electrode is printed on the positive electrode current collector. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero. The printer base plate and infrared heating radiator heat the positive electrode material to quickly solidify it during printing.

[0063] In practice, a 90μm thick positive electrode layer is printed on the positive electrode current collector using slurry lamination extrusion 3D printing technology.

[0064] In step S303, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to grip the nozzle 10 containing the electrolyte slurry and bring the nozzle 10 directly above the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, bringing the nozzle 10 down to the printing plane. Using slurry stacking extrusion 3D printing technology, the electrolyte is printed on the positive electrode. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero. The printer base plate and infrared heating radiator heat up, causing the solvent to evaporate and obtaining an electrolyte that is fully and tightly bonded to the positive electrode material.

[0065] In practice, a 15μm thick electrolyte layer is printed on the positive electrode using slurry lamination extrusion 3D printing technology, allowing the anhydrous acetonitrile solvent to evaporate.

[0066] In step S304, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to grip the nozzle 10 containing the negative electrode slurry and bring the nozzle 10 directly above the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, bringing the nozzle 10 down to the printing plane. Using slurry stacking extrusion 3D printing technology, the negative electrode is printed on the electrolyte. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero. The printer base plate and infrared heating radiator heat the negative electrode material to solidify rapidly during printing.

[0067] In practice, a 100μm thick negative electrode layer is printed in situ on the surface of the electrolyte layer using slurry lamination extrusion 3D printing technology.

[0068] In step S305, the 3D printer executes the nozzle switching procedure. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to grip the nozzle 10 containing the current collector slurry and bring the nozzle 10 directly above the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, bringing the nozzle 10 down to the printing plane. Using ink direct writing 3D printing technology, the negative electrode current collector is printed inside the positive electrode shell of the battery. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero. The printer base plate and infrared heating radiator heat the negative electrode current collector material to quickly solidify it during printing.

[0069] In practice, ink-to-ink 3D printing technology is used to print a 15μm thick negative electrode current collector layer on the negative electrode surface.

[0070] The specific process of printing the battery negative electrode shell using photosensitive resin in step S4 is as follows: The 3D printer executes the nozzle switching program. The X-axis motion drive mechanism 3, Y-axis motion drive mechanism 2, and Z-axis motion drive mechanism 4 drive the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 respectively, which in turn drive the nozzle gripping mechanism 8 to re-grip the nozzle 10 containing the photosensitive resin and move the nozzle 10 to the top of the printing area. The Z-axis motion drive mechanism 4 drives the Z-axis motion component 7 to move, which lowers the nozzle 10 to the printing plane and prints the battery negative electrode shell on the printer base plate. After printing is completed, the X-axis motion component 5, Y-axis motion component 6, and Z-axis motion component 7 all return to zero, and the battery negative electrode shell is cured by ultraviolet light inside the 3D printer.

[0071] In this embodiment, the heating temperature of the printer base plate during heating is 40℃~200℃.

[0072] In this embodiment, the nozzle 10 includes an A-type nozzle 10.1A (wider at the top and narrower at the bottom) and a B-type nozzle 10.1B (wider at the bottom and narrower at the top) that can be staggered on the nozzle mounting bracket 11. Both the A-type nozzle 10.1A and the B-type nozzle 10.1B include a feed tube fixing seat 10.4 and a feed tube 10.3, a nozzle 10.5, and a positioning structure disposed on the feed tube fixing seat 10.4. The feed tube fixing seat 10.4 of the A-type nozzle 10.1A is T-shaped (wider at the top and narrower at the bottom). The positioning structure of the type A nozzle 10.1A includes three positioning beads 10.2 arranged in an inverted equilateral triangle on the material tube fixing seat 10.4. The positioning structure of the type B nozzle 10.1B includes three positioning beads 10.2 arranged in an equilateral triangle on the material tube fixing seat 10.4. Both the type A nozzle 10.1A and the type B nozzle 10.1B have a locking slot at the middle position of the material tube fixing seat 10.4 for the nozzle gripping mechanism 8 to lock the nozzle 10.

[0073] The nozzle gripping mechanism 8 includes a nozzle gripping mechanism base 8.2 and an A-type nozzle gripping positioning groove 8.5A, a B-type nozzle gripping positioning groove 8.5B, and a rotation locking mechanism disposed on the nozzle gripping mechanism base 8.2. The A-type nozzle gripping positioning groove 8.5A includes three positioning buckles arranged in an inverted equilateral triangle, and the B-type nozzle gripping positioning groove 8.5B includes three positioning buckles arranged in an equilateral triangle. The three positioning buckles constituting the A-type nozzle gripping positioning groove 8.5A and the three positioning buckles constituting the B-type nozzle gripping positioning groove 8.5B are staggered. The rotation locking mechanism includes a motor 8.6, a drive gear 8.7 connected to the output shaft of the motor 8.6, a driven gear 8.8 meshing with the drive gear 8.7, and a rotating shaft 8.3 connected to the driven gear 8.8. The end of the rotating shaft 8.3 is connected to a stop bar 8.4 for engaging with the buckle.

[0074] In this embodiment, during the printing process of steps S2, S3, and S4, when switching printheads, the printhead 10 is gripped by the printhead gripping mechanism 8. The specific method is as follows: First, the X-axis motion drive mechanism 3, the Y-axis motion drive mechanism 2, and the Z-axis motion drive mechanism 4 drive the X-axis motion component 5, the Y-axis motion component 6, and the Z-axis motion component 7 respectively, causing the printhead gripping mechanism 8 to approach the printhead 10 to be gripped and move to the position where the positioning bead 10.2 is engaged with the positioning buckle, and the stop rod 8.4 extends into the bayonet. Then, the motor 8.6 drives the drive gear 8.7 to rotate, which in turn drives the driven gear 8.8 to rotate, which in turn drives the rotating shaft 8.3 to rotate, which in turn drives the stop rod 8.4 to rotate 90°, so that the stop rod 8.4 is fixed in the bayonet, thus locking the printhead 10 on the printhead gripping mechanism 8.

[0075] Example 2

[0076] The difference between this embodiment and embodiment 1 is that, in step S3, after printing the electrolyte and before printing the negative electrode, pressure is applied to the surface of the electrolyte layer to compact the electrolyte layer.

[0077] In practice, a pressure of 10 MPa is applied to the surface of the electrolyte layer to compact it.

[0078] The remaining methods are the same as in Example 1.

[0079] Compared with the prior art, the printing methods in Embodiments 1 and 2 above have a wider range of applicable materials and the printing materials used are not limited.

[0080] In specific implementation, the solid phase of the positive electrode printing slurry, by mass fraction, comprises 80-95% active material, 3-10% conductive agent, and 2-10% binder; the mass ratio of the liquid phase to the solid phase is 1:9-8:2; wherein, the active material comprises one or more of NM binary materials, NCM ternary materials, NCA ternary materials, NMM ternary materials, lithium iron phosphate, lithium manganese oxide, lithium cobalt oxide, metal oxide materials, MOF materials, COF materials, sulfur composite materials, and carbon composite materials; the conductive agent comprises one or more of conductive carbon black, acetylene black, conductive graphite, and carbon nanotubes; the binder comprises one or more of polyvinylidene fluoride (PVDF), polyvinylpyrrolidone (PVP), and lithium polyacrylate (PAALi); the liquid phase comprises one or more of nitrogen-methylpyrrolidone (NMP), dimethyl sulfoxide (DMSO), and N,N-dimethylformamide (DMF).

[0081] In specific implementation, the negative electrode printing paste, by mass fraction, comprises 80-95% active material and 5-20% binder; the mass ratio of dispersant to the aforementioned mixture is 1:9-8:2; wherein, the active material is one or more of graphite, hard carbon, lithium titanate, silicon, silicon-carbon alloy, and metal alloy; graphite includes natural graphite and artificial graphite; hard carbon includes resin carbon, organic polymer pyrolytic carbon, and carbon black; metal alloy includes gallium-tin alloy, lithium-tin alloy, antimony-tin alloy, tin-aluminum alloy, lithium-aluminum alloy, and germanium-selenium alloy; the binder includes one or more of carboxymethyl cellulose (CMC), styrene-butadiene rubber (SBR), and polyacrylic acid (PAA); and the dispersant is one or more of pure water, ethanol, and acetone.

[0082] In specific implementation, the solid phase of the electrolyte printing paste, by mass fraction, comprises 1-20% lithium salt, 50-75% polymer, 1-10% photoinitiator, and 0-25% electrolyte powder; wherein the lithium salt comprises one or more of lithium perchlorate (LiClO4), lithium difluorooxalate phosphate (LiODFB), lithium difluorobis(oxalate) phosphate (LiDFBP), lithium bis(fluorosulfonyl)imide (LiFSI), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium trifluoromethanesulfonate (LiCF3SO3), lithium tetrafluoroborate (LiBF4), and lithium hexafluorophosphate (LiPF6); the polymer comprises polyethylene oxide, polyvinylidene fluoride, polyvinyl chloride, polyvinylidene fluoride, polyvinyl alcohol, and polyvinyl acetate. The photoinitiator comprises one or more of the following: polycaprolactone, polyacrylonitrile, polymethyl methacrylate, polypropylene oxide, polyacrylic acid, and polyethylene glycol diethylene ether; the photoinitiator comprises one or more of the following: 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-phenyl-propanone, 2,2-dimethylolpropionic acid, xylene ketone, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, and trimethylbenzoyl-diphenylphosphine oxide; the electrolyte powder comprises one or more of the following: lithium lanthanum zirconium oxide, aluminum-doped lithium lanthanum zirconium oxide, lithium lanthanum titanium oxide, lithium titanium aluminum phosphate, lithium germanium aluminum phosphate, lithium phosphorus sulfur chloride, lithium phosphorus oxygen nitrogen, magnesium oxide, aluminum oxide, and halides; the organic solvent comprises one or more of the following: dimethyl carbonate, anhydrous acetonitrile, ethylene carbonate, propylene carbonate, and propylene carbonate.

[0083] In specific implementation, the current collector material is one or more of nano-silver, nano-copper, and graphene slurry.

[0084] In specific implementation, the materials used to print the positive and negative electrode shells of the battery include one or more of the following: metal materials, alloy materials, resin materials, and carbon composite materials. The metal materials include one or more of stainless steel, aluminum, iron, and copper; the alloy materials include one or more of titanium alloys, aluminum alloys, magnesium alloys, and copper alloys; the resin materials include one or more of polylactic acid, polymethyl methacrylate, and polyimide; and the carbon composite materials include one or more of carbon fiber composite materials, carbon nanotube composite materials, and graphene composite materials.

[0085] For example, in Example 1, the preparation of the positive electrode printing slurry is as follows: 5g of PVDF is dissolved in 100g of NMP and heated and stirred at 60°C until the PVDF is completely dissolved and the solution is clear and transparent; 90g of lithium iron phosphate and 5g of Superp are mixed evenly; the mixed powder of lithium iron phosphate and Superp is added to the cooled PVDF solution in multiple batches while maintaining uniform stirring; after the initial mixing is completed, the slurry is transferred to a ball mill and mixed evenly; after defoaming in a defoamer, the positive electrode printing slurry is obtained.

[0086] Preparation of negative electrode printing paste: Dissolve 2.5g CMC in dispersant and stir until CMC is completely dissolved; add 1.5g SBR to the above solution and stir evenly; add 96g silicon-carbon composite material to the above solution in multiple batches while maintaining uniform stirring. After the initial mixing is completed, transfer the paste to a ball mill and mix evenly. After defoaming in a defoamer, the negative electrode printing paste is obtained.

[0087] Preparation of electrolyte printing paste: Dissolve 10g LiTFSI in 500g anhydrous acetonitrile and stir until LiTFSI is completely dissolved; add 28g PEO to the above solution and heat and stir at 60℃ to completely dissolve PEO; after cooling the solution, transfer it to a defoamer to defoam and obtain electrolyte printing paste.

[0088] In Example 2, the positive electrode printing slurry was prepared as follows: 5g of PVDF was dissolved in 100g of NMP and heated and stirred at 60°C until the PVDF was completely dissolved and the solution was clear and transparent; 90g of lithium iron phosphate and 5g of Superp were mixed evenly; the mixed powder of lithium iron phosphate and Superp was added to the cooled PVDF solution in several batches while maintaining uniform stirring; after the initial mixing was completed, the slurry was transferred to a ball mill and mixed evenly; after defoaming in a defoamer, the positive electrode printing slurry was obtained.

[0089] Preparation of negative electrode printing paste: Dissolve 2.5g CMC in dispersant and stir until CMC is completely dissolved; add 1.5g SBR to the above solution and stir evenly; add 96g silicon-carbon composite material to the above solution in multiple batches while maintaining uniform stirring. After the initial mixing is completed, transfer the paste to a ball mill and mix evenly. After defoaming in a defoamer, the negative electrode printing paste is obtained.

[0090] Preparation of electrolyte printing paste: Dissolve 0.1g of PVDF in NMP and stir until the PVDF is completely dissolved. Add 0.9g of lithium aluminum titanium phosphate (LATP, or LFTP, LCTP) to the above solution and stir until the LATP is evenly dispersed to obtain the electrolyte printing paste.

[0091] The test results are shown in the table below:

[0092] 60℃ Cyclic Test First-lap coulomb efficiency (%) Discharge specific capacity (mAh / g) Example 1 84.5 130.5 Example 2 85.7 135.9

[0093] In summary, this invention can be used to print battery materials that can be configured into slurries, effectively solving the problem of the lack of simple and efficient manufacturing methods for solid-state batteries, and providing a new, efficient and feasible method for the production and manufacturing of solid-state batteries.

[0094] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method of integrally manufacturing a solid-state battery by 3D printing, characterized by, The method comprises the following steps: Step S1, taking the positive electrode, negative electrode, electrolyte and current collector material, configuring the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste and current collector printing paste; Step S2, printing the battery positive electrode shell on the printer bottom plate using photosensitive resin; Step S3, placing the positive electrode printing paste, negative electrode printing paste, electrolyte printing paste and current collector printing paste in the multiple nozzles of the 3D printer respectively, and realizing the layer-by-layer printing of the positive electrode current collector, positive electrode, electrolyte, negative electrode and negative electrode current collector inside the battery positive electrode shell by switching the nozzles; When printing the positive electrode current collector, ink direct writing 3D printing technology is used to print the positive electrode current collector inside the battery positive electrode shell; When printing the positive electrode, paste layering extrusion 3D printing technology is used to print the positive electrode on the positive electrode current collector, and the printer bottom plate heating combined with the upper infrared heating radiator radiation heating mode is adopted to make the positive electrode material quickly solidify while printing; When printing the electrolyte, paste layering extrusion 3D printing technology is used to print the electrolyte on the positive electrode, and the printer bottom plate heating combined with the upper infrared heating radiator radiation heating mode is adopted to make the solvent volatilize, so as to obtain the electrolyte which is fully and closely combined with the positive electrode material; When printing the negative electrode, paste layering extrusion 3D printing technology is used to print the negative electrode on the electrolyte, and the printer bottom plate heating combined with the upper infrared heating radiator radiation heating mode is adopted to make the negative electrode material quickly solidify while printing; When printing the negative electrode current collector, ink direct writing 3D printing technology is used to print the negative electrode current collector on the negative electrode; The 3D printer used for printing the battery positive electrode shell, positive electrode current collector, positive electrode, electrolyte, negative electrode, negative electrode current collector and battery negative electrode shell comprises a rack (1) and X-axis movement components (5), Y-axis movement components (6), Z-axis movement components (7), nozzle grabbing mechanisms (8) and nozzle placing racks (11) arranged on the rack (1). The X-axis movement components (5) are connected with X-axis movement driving mechanisms (3) for driving the movement of the X-axis movement components (5). The Y-axis movement components (6) are connected with Y-axis movement driving mechanisms (2) for driving the movement of the Y-axis movement components (6). The Z-axis movement components (7) are connected with Z-axis movement driving mechanisms (4) for driving the movement of the Z-axis movement components (7). The nozzles (10) are placed on the nozzle placing racks (11). The nozzle grabbing mechanisms (8) are moved by the X-axis movement components (5), Y-axis movement components (6) and Z-axis movement components (7) and located above the nozzles (10); Step S4, printing the battery negative electrode shell using photosensitive resin to complete the packaging; Step S5, compacting to obtain a solid-state battery.

2. The method for integrated fabrication of solid-state batteries by 3D printing according to claim 1, characterized in that: After printing the electrolyte in step S3, pressure is applied to the surface of the electrolyte layer before printing the negative electrode to compact the electrolyte layer.

3. The method for integrated fabrication of solid-state batteries by 3D printing according to claim 2, characterized in that: The heating temperature of the printer bottom plate is 40-200°C.

4. The method for integrated fabrication of solid-state batteries by 3D printing according to claim 1, characterized in that: The specific process of printing the positive electrode shell of the battery on the printer base plate using the photosensitive resin in step S2 is as follows: the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the photosensitive resin, and drive the nozzle (10) to reach directly above the printing area; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, and drives the nozzle (10) to descend to the printing plane, and the positive electrode shell of the battery is printed on the printer base plate; after printing is completed, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, and the ultraviolet light in the 3D printer irradiates the positive electrode shell of the battery to make it solidify; The specific process of printing the positive electrode shell of the battery on the printer base plate using the photosensitive resin in step S2 is as follows: the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the photosensitive resin, and drive the nozzle (10) to reach directly above the printing area; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, and drives the nozzle (10) to descend to the printing plane, and the positive electrode shell of the battery is printed on the printer base plate; after printing is completed, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, and the ultraviolet light in the 3D printer irradiates the positive electrode shell of the battery to make it solidify; The specific process of printing the positive electrode shell of the battery on the printer base plate using the photosensitive resin in step S2 is as follows: the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the photosensitive resin, and drive the nozzle (10) to reach directly above the printing area; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, and drives the nozzle (10) to descend to the printing plane, and the positive electrode shell of the battery is printed on the printer base plate; after printing is completed, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, and the ultraviolet light in the 3D printer irradiates the positive electrode shell of the battery to make it solidify; ​ Step S303, the 3D printer executes the nozzle switching program, the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the electrolyte slurry, and drive the nozzle (10) to reach the printing area directly above; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, drives the nozzle (10) to descend to the printing plane, prints the electrolyte on the positive electrode; after printing, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, the printer bottom plate and the infrared heating radiator are heated, the solvent is volatilized, and the electrolyte is obtained which is fully and closely combined with the positive electrode material; Step S304, the 3D printer executes the nozzle switching program, the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the negative electrode slurry, and drive the nozzle (10) to reach the printing area directly above; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, drives the nozzle (10) to descend to the printing plane, prints the negative electrode on the electrolyte; after printing, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, the printer bottom plate and the infrared heating radiator are heated, and the negative electrode material is quickly solidified at the same time of printing; Step S305, the 3D printer executes the nozzle switching program, the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the current collector slurry, and drive the nozzle (10) to reach the printing area directly above; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) to move, drives the nozzle (10) to descend to the printing plane, prints the negative electrode current collector inside the battery positive electrode shell; after printing, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, the printer bottom plate and the infrared heating radiator are heated, and the negative electrode current collector material is quickly solidified at the same time of printing; The specific process of printing the battery negative electrode shell by using the photosensitive resin in step S4 is: the 3D printer executes the nozzle switching program, the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, drive the nozzle grabbing mechanism (8) to grab the nozzle (10) containing the photosensitive resin again, and drive the nozzle (10) to reach the printing area directly above; the Z-axis movement driving mechanism (4) drives the Z-axis movement component (7) movement, drive the nozzle (10) to drop to the printing plane, print the battery negative shell on the printer bottom plate; after printing is completed, the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) are all returned to zero, and the battery negative shell is cured by the ultraviolet light irradiation in the 3D printer.

5. The method for integrated fabrication of solid-state batteries by 3D printing according to claim 4, characterized in that: The nozzle (10) includes an A-type nozzle (10.1A) with upper width and lower narrowness and a B-type nozzle (10.1B) with lower width and upper narrowness which can be staggered and placed on a nozzle placing rack (11), the A-type nozzle (10.1A) and the B-type nozzle (10.1B) each include a material pipe fixing seat (10.4) and a material pipe (10.3), a nozzle (10.5) and a positioning structure which are arranged on the material pipe fixing seat (10.4), the material pipe fixing seat (10.4) of the A-type nozzle (10.1A) is a T-shaped structure with upper width and lower narrowness, the positioning structure of the A-type nozzle (10.1A) includes three positioning beads (10.2) arranged in an inverted equilateral triangle on the material pipe fixing seat (10.4), the positioning structure of the B-type nozzle (10.1B) includes three positioning beads (10.2) arranged in an equilateral triangle on the material pipe fixing seat (10.4), and the material pipe fixing seat (10.4) of the A-type nozzle (10.1A) and the B-type nozzle (10.1B) is provided with a bayonet at a middle position for locking the nozzle (10) by a nozzle grabbing mechanism (8); The nozzle grabbing mechanism (8) includes a nozzle grabbing mechanism seat (8.2) and an A-type nozzle grabbing positioning groove (8.5A), a B-type nozzle grabbing positioning groove (8.5B) and a rotating locking mechanism which are arranged on the nozzle grabbing mechanism seat (8.2), the A-type nozzle grabbing positioning groove (8.5A) includes three positioning buckles arranged in an inverted equilateral triangle, the B-type nozzle grabbing positioning groove (8.5B) includes three positioning buckles arranged in an equilateral triangle, the three positioning buckles constituting the A-type nozzle grabbing positioning groove (8.5A) and the three positioning buckles constituting the B-type nozzle grabbing positioning groove (8.5B) are staggered, and the rotating locking mechanism includes a motor (8.6), a driving gear (8.7) connected with an output shaft of the motor (8.6), a driven gear (8.8) engaged with the driving gear (8.7) and a rotating shaft (8.3) connected with the driven gear (8.8), and the rotating shaft (8.3) is connected with a stop rod (8.4) for being clamped into the bayonet at an end.

6. The method for integrated fabrication of solid-state batteries by 3D printing according to claim 5, characterized in that: In the printing process of steps S2, S3 and S4, the printhead (10) is grabbed by the printhead grabbing mechanism (8) in the following way: first, the X-axis movement driving mechanism (3), the Y-axis movement driving mechanism (2) and the Z-axis movement driving mechanism (4) drive the X-axis movement component (5), the Y-axis movement component (6) and the Z-axis movement component (7) respectively, so as to drive the printhead grabbing mechanism (8) to approach the printhead (10) to be grabbed and move to the position where the positioning bead (10.2) is clamped into the positioning buckle, and the blocking rod (8.4) extends into the clamping hole; then, the motor (8.6) drives the driving gear (8.7) to rotate, then drives the driven gear (8.8) to rotate, then drives the rotating shaft (8.3) to rotate, and then drives the blocking rod (8.4) to rotate 90 。 degrees, so that the blocking rod (8.4) is fixed in the clamping hole, and the printhead (10) is locked on the printhead grabbing mechanism (8).

Images