Method, apparatus and medium for preparing nanometerized lithium battery based on additive manufacturing

Abstract

The application discloses a preparation method and device of a nanometer lithium battery based on additive manufacturing and a computer readable storage medium. The preparation method is applied to an additive manufacturing equipment, and the additive manufacturing equipment comprises a support and an additive manufacturing forming cavity. The support is provided with a movable 3D printing additive manufacturing device. The size of the additive manufacturing forming cavity is larger than that of nanometer silicon negative electrode material of the nanometer lithium battery. The preparation method comprises the following steps: filling the additive manufacturing forming cavity with inert gas; after the additive manufacturing forming cavity is filled with the inert gas, the 3D printing additive manufacturing device is moved on the support, and additive manufacturing is performed by the 3D printing additive manufacturing device during the movement to obtain the nanometer silicon negative electrode material of the nanometer lithium battery. The technical scheme can prepare nanometer silicon material into lithium battery negative electrode material, and provides technical support for the application of a new type of lithium battery negative electrode material.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery technology, and particularly relates to a method, apparatus and computer-readable storage medium for preparing nano-sized lithium batteries based on additive manufacturing. Background Technology

[0002] Currently, lithium-ion batteries (or lithium batteries for short) are the most widely used type of rechargeable battery, typically using graphite as the negative electrode material. However, due to the low specific capacity of graphite negative electrodes, with a theoretical specific capacity of only 372 mAh / g, it is difficult to meet the design requirements of high-energy-density lithium-ion batteries.

[0003] In recent years, nano-silicon materials have shown good electrochemical performance, but how to prepare nano-silicon materials into lithium battery anode materials, so as to provide strong technical support for the application of new lithium battery anode materials, has become a technical problem that needs to be solved in the industry. Summary of the Invention

[0004] The main objective of this invention is to provide a method, apparatus, and computer-readable storage medium for preparing nano-sized lithium batteries based on additive manufacturing. The aim is to prepare nano-silicon materials as lithium battery anode materials, thereby providing strong technical support for the application of novel lithium battery anode materials.

[0005] To achieve the above objectives, the present invention provides a method for preparing a nano-sized lithium battery based on additive manufacturing. This method is applied to an additive manufacturing equipment, which includes a support and an additive manufacturing forming cavity. A movable 3D printing additive manufacturing device is disposed on the support, and the size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery.

[0006] The preparation method includes:

[0007] An inert gas is introduced into the additive manufacturing cavity;

[0008] After the inert gas is filled into the additive manufacturing cavity, the 3D printing additive manufacturing device moves on the support and performs additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0009] In some feasible embodiments, the support is two parallel, horizontally extending supports spaced a predetermined distance apart, the additive manufacturing cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports, the predetermined distance being greater than the maximum longitudinal dimension of the additive manufacturing cavity, and the 3D printing additive manufacturing apparatus is disposed on the longitudinal support.

[0010] The step of moving the support via the 3D printing additive manufacturing apparatus includes:

[0011] The 3D printing additive manufacturing apparatus moves laterally and / or longitudinally on the support based on the guiding device.

[0012] In some feasible embodiments, the 3D printing additive manufacturing apparatus includes: a 3D printing nozzle and a powder feeding system, the powder feeding system being used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle;

[0013] The step of obtaining nano-silicon anode material for nano-lithium batteries by performing additive manufacturing during the movement of the 3D printing additive manufacturing apparatus includes:

[0014] During the movement of the 3D printing additive manufacturing apparatus on the support, Al-12Si alloy powder containing nano and submicron cellular structures is delivered to the 3D printing nozzle through the powder feeding system.

[0015] The nano-silicon anode material is obtained by additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material.

[0016] In some feasible embodiments, the structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure.

[0017] In some feasible embodiments, after the step of additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material, the method further includes:

[0018] The aluminum inside the cellular structure obtained by additive manufacturing of the 3D printing nozzle according to the three-dimensional porous nano-silicon structure is removed by dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0019] In addition, to achieve the above objectives, the present invention also provides a fabrication apparatus for nano-sized lithium batteries based on additive manufacturing. The fabrication apparatus is applied to an additive manufacturing equipment, which includes a support and an additive manufacturing forming cavity. A movable 3D printing additive manufacturing device is disposed on the support, and the size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery.

[0020] The preparation apparatus of this invention includes:

[0021] An inflation module is used to fill the additive manufacturing cavity of the additive manufacturing equipment with inert gas;

[0022] An additive manufacturing module is used to move on a support via a 3D printing additive manufacturing device of the additive manufacturing equipment after the additive manufacturing forming cavity is filled with the inert gas, and to perform additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0023] In some feasible embodiments, the support is two parallel, horizontally extending supports spaced a predetermined distance apart, the additive manufacturing cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports, the predetermined distance being greater than the maximum longitudinal dimension of the additive manufacturing cavity, and the 3D printing additive manufacturing apparatus is disposed on the longitudinal support.

[0024] The additive manufacturing module includes:

[0025] A movement control unit for lateral and / or longitudinal movement of the 3D printing additive manufacturing apparatus on the support based on the guide device.

[0026] In some feasible embodiments, the 3D printing additive manufacturing apparatus includes: a 3D printing nozzle and a powder feeding system, the powder feeding system being used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle;

[0027] The additive manufacturing module further includes:

[0028] The powder feeding control unit is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device during the movement of the 3D printing additive manufacturing device on the support.

[0029] A 3D printing additive manufacturing unit is used to perform additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle to obtain the nano-silicon anode material according to the structure of the nano-silicon anode material.

[0030] In some feasible embodiments, a dealloying etching module is used to remove aluminum from the cellular structure inside the 3D printing nozzle obtained by additive manufacturing according to the three-dimensional porous nano-silicon structure by dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0031] The various functional modules of the additive manufacturing-based nano-lithium battery fabrication apparatus of the present invention implement the steps of the additive manufacturing-based nano-lithium battery fabrication method described above during operation.

[0032] Furthermore, to achieve the above objectives, the present invention also provides a computer-readable storage medium storing a fabrication program for a nano-sized lithium battery based on additive manufacturing, wherein when the fabrication program for the nano-sized lithium battery based on additive manufacturing is executed by a processor, the steps of the fabrication method for the nano-sized lithium battery based on additive manufacturing as described above are implemented.

[0033] 2. This invention provides a method, apparatus, and computer-readable storage medium for fabricating a nano-sized lithium battery based on additive manufacturing. The method for fabricating this nano-sized lithium battery is applied to an additive manufacturing equipment, which includes a support and an additive manufacturing cavity. A movable 3D printing additive manufacturing device is mounted on the support. The size of the additive manufacturing cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery. The fabrication method includes: filling the additive manufacturing cavity with an inert gas; after filling the additive manufacturing cavity with the inert gas, moving the 3D printing additive manufacturing device on the support, and performing additive manufacturing during the movement to obtain the nano-silicon anode material of the nano-sized lithium battery.

[0034] Thus, the present invention, through the additive manufacturing equipment described above, can manufacture nano-silicon anode materials for lithium batteries in the additive manufacturing forming cavity using a movable 3D printing additive manufacturing device, thereby realizing the preparation of nano-silicon materials into lithium battery anode materials, providing strong technical support for the application of new anode materials for lithium batteries. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the additive manufacturing equipment according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic flowchart of the first embodiment of the method for preparing nano-sized lithium batteries based on additive manufacturing according to the present invention.

[0037] Figure 3 This is a schematic diagram of the hardware operating environment of the additive manufacturing equipment involved in the embodiments of the present invention;

[0038] Figure 4 This is a functional module diagram of an embodiment of the fabrication apparatus for nano-sized lithium batteries based on additive manufacturing according to the present invention.

[0039] Explanation of reference numerals in the attached figures

[0040] 1-1 Workbench unloading area 1-2 Processing area 1-3 Additive manufacturing cavity 1-4 Longitudinal support 1-5 Horizontal support 1-6 Horizontal support 1-7 Vertical axis 1-8 Longitudinal support

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] It should be noted that in this embodiment, lithium-ion batteries (hereinafter referred to as lithium batteries) are currently the most widely used type of rechargeable battery, typically using graphite as the negative electrode material. However, due to the low specific capacity of graphite negative electrodes, with a theoretical specific capacity of only 372 mAh / g, it is difficult to meet the design requirements of high-energy-density lithium-ion batteries.

[0044] In recent years, nano-silicon materials have shown good electrochemical performance, but how to prepare nano-silicon materials into lithium battery anode materials, so as to provide strong technical support for the application of new lithium battery anode materials, has become a technical problem that needs to be solved in the industry.

[0045] To address the aforementioned problems, this invention provides a method for fabricating a nano-sized lithium battery based on additive manufacturing. This method is applied to an additive manufacturing apparatus, which includes a support and an additive manufacturing cavity. A movable 3D printing additive manufacturing device is mounted on the support. The size of the additive manufacturing cavity is larger than the size of the nano-silicon anode material for the nano-sized lithium battery. The method includes: filling the additive manufacturing cavity with an inert gas; after filling the cavity with the inert gas, moving the 3D printing additive manufacturing device on the support, and performing additive manufacturing during the movement to obtain the nano-silicon anode material for the nano-sized lithium battery.

[0046] Thus, the embodiments of the present invention, by including the above-mentioned additive manufacturing equipment, can manufacture nano-silicon anode materials for lithium batteries in the additive manufacturing forming cavity using a movable 3D printing additive manufacturing device, thereby realizing the preparation of nano-silicon materials into lithium battery anode materials, providing strong technical support for the application of new anode materials for lithium batteries.

[0047] Furthermore, based on the overall inventive concept of the present invention's method for preparing nano-sized lithium batteries based on additive manufacturing, various embodiments of the present invention's method for preparing nano-sized lithium batteries based on additive manufacturing are proposed.

[0048] Please refer to Figure 1 , Figure 1 A schematic diagram of the additive manufacturing equipment for the preparation method of nano-sized lithium batteries based on additive manufacturing provided by the embodiments of the present invention.

[0049] In one embodiment of the method for preparing nano-sized lithium batteries based on additive manufacturing of the present invention, the additive manufacturing equipment using the method for preparing nano-sized lithium batteries based on additive manufacturing of the present invention may include: a support and an additive manufacturing forming cavity, wherein a movable 3D printing additive manufacturing device is disposed on the support, and the size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery.

[0050] In this embodiment, the additive manufacturing equipment using the method for fabricating nano-sized lithium batteries based on additive manufacturing of the present invention has a support and a movable 3D printing additive manufacturing device mounted on the support. Furthermore, an additive manufacturing forming cavity is provided in the middle of the support of the additive manufacturing equipment, and the size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery.

[0051] Furthermore, in a feasible embodiment, in the additive manufacturing equipment applying the present invention's method for preparing nano-sized lithium batteries based on additive manufacturing, the support consists of two parallel, horizontally extending supports spaced a predetermined distance apart. The additive manufacturing forming cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports. The predetermined distance is greater than the maximum longitudinal dimension of the additive manufacturing forming cavity. The 3D printing additive manufacturing device is disposed on the longitudinal support.

[0052] In this embodiment, in the additive manufacturing equipment using the additive manufacturing method for fabricating nano-sized lithium batteries according to the present invention, the support consists of two transverse supports 1-5 and 1-6. These two transverse supports 1-5 and 1-6 are arranged parallel to each other and spaced apart by a predetermined distance, which must be greater than the maximum longitudinal dimension of the additive manufacturing cavity 1-3. Furthermore, the support also includes a longitudinal support 1-8 spanning the two transverse supports 1-5 and 1-6. The longitudinal support 1-8 is movable relative to the two transverse supports 1-5 and 1-6 in the direction extending along the two transverse supports 1-5 and 1-6 (i.e., the y-axis direction). Therefore, by placing the 3D printing additive manufacturing device on the longitudinal support, the additive manufacturing equipment using the additive manufacturing method for fabricating nano-sized lithium batteries according to the present invention can move based on the movement of the longitudinal support in the direction extending along the two transverse supports 1-5 and 1-6.

[0053] Furthermore, in one feasible embodiment, the longitudinal support in the aforementioned support drives the 3D printing additive manufacturing apparatus to move on the transverse support via a guiding device.

[0054] In this embodiment, the 3D printing additive manufacturing apparatus described above is connected to the longitudinal support 1-8 via a guide device and can move together with the longitudinal support 1-8.

[0055] For example, such as Figure 1 As shown, the guiding device is movable relative to the longitudinal support 1-8 in the direction of its extension (i.e., the x-axis direction), thereby driving the 3D printing additive manufacturing device to move. The guiding device includes a guide block and a vertical shaft 1-7, which is disposed on or in the guide block. The guide block is movable on the longitudinal support 1-8 in the direction of its extension, and the vertical shaft 1-7 is movable relative to the guide block in the vertical direction.

[0056] Furthermore, in one feasible embodiment, the above-described 3D printing additive manufacturing apparatus includes: a 3D printing nozzle and a powder feeding system, wherein the powder feeding system is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle.

[0057] In this embodiment, the 3D printing additive manufacturing apparatus described above includes a 3D printing nozzle and a powder feeding system for feeding Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle.

[0058] For example, such as Figure 1 As shown, the 3D printing nozzle and powder feeding system of the 3D printing additive manufacturing apparatus are mounted on the longitudinal support 1-8 via a guiding device, such as a vertical axis 1-7. The longitudinal support 1-8 maintains the airtightness of the forming cavity during movement. The longitudinal support 1-8 can move within the forming cavity in the y-axis direction, and the vertical axis 1-7 can move relative to the longitudinal support 1-8 in the x-axis direction. In addition, the vertical axis 1-7 can move vertically relative to the guide block, thereby allowing the 3D printing nozzle and powder feeding system to move to any position within the forming cavity. Thus, additive manufacturing can be performed at any position within the additive manufacturing forming cavity 1-3 to obtain a shaped part of nano-silicon anode material for nano-sized lithium batteries.

[0059] It should be noted that, in this embodiment, the additive manufacturing equipment can complete the 3D printing additive manufacturing of parts through the linkage of the longitudinal support 1-8 and the guiding device (which includes the vertical axis 1-7). Furthermore, the movement of the longitudinal support 1-8 and the guiding device can be synchronous or asynchronous.

[0060] In this embodiment of the invention, the nano-silicon anode material for lithium batteries can be manufactured in the additive manufacturing cavity using the above-mentioned additive manufacturing equipment and a movable 3D printing additive manufacturing device. This realizes the preparation of nano-silicon materials into lithium battery anode materials, providing strong technical support for the application of new lithium battery anode materials.

[0061] Based on the above description of the additive manufacturing equipment for the preparation method of nano-sized lithium batteries based on additive manufacturing of the present invention, various embodiments of the preparation method of nano-sized lithium batteries based on additive manufacturing of the present invention are proposed.

[0062] In various embodiments of the method for preparing nano-sized lithium batteries based on additive manufacturing of the present invention, the method for preparing nano-sized lithium batteries based on additive manufacturing of the present invention is applied to the additive manufacturing equipment described in any of the above embodiments.

[0063] Please refer to Figure 2 , Figure 2 This is a schematic flowchart of a first embodiment of the method for preparing a nano-sized lithium battery based on additive manufacturing according to the present invention. It should be understood that although a logical order is shown in the flowchart, in some cases, the method for preparing a nano-sized lithium battery based on additive manufacturing according to the present invention may, of course, perform the steps shown or described in a different order than that shown here.

[0064] like Figure 2 As shown, in the first embodiment of the method for preparing a nano-sized lithium battery based on additive manufacturing of the present invention, the method includes:

[0065] Step S10: Inert gas is introduced into the additive manufacturing cavity of the additive manufacturing equipment;

[0066] Step S20: After the inert gas is filled into the additive manufacturing cavity, the 3D printing additive manufacturing device of the additive manufacturing equipment moves on the support and performs additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0067] In this embodiment, upon detecting a manufacturing command, the additive manufacturing equipment can begin filling its additive manufacturing cavity, which is used to additively manufacture the part, with inert gas. Then, after detecting that the additive manufacturing cavity is filled with inert gas, the additive manufacturing equipment further moves on the support via its own 3D printing additive manufacturing device, and simultaneously performs additive manufacturing operations during the movement to produce nano-silicon anode material for nano-sized lithium batteries.

[0068] Further, in a feasible embodiment, step S20 above: the 3D printing additive manufacturing device moving on the support and performing additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries, may include:

[0069] Step S201: The 3D printing additive manufacturing apparatus moves laterally and / or longitudinally on the support based on the guiding device;

[0070] Step S202: During the movement of the 3D printing additive manufacturing device on the support, Al-12Si alloy powder containing nano and submicron cellular structures is delivered to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device.

[0071] Step S203: Using the Al-12Si alloy powder as raw material, additive manufacturing is performed through the 3D printing nozzle to obtain the nano-silicon anode material according to its structure.

[0072] In this embodiment, the 3D printing additive manufacturing apparatus of the additive manufacturing equipment can be connected to the longitudinal support via a guide device and move laterally and / or longitudinally together with the longitudinal support based on the guide device.

[0073] For example, such as Figure 1 As shown, the guiding device can move relative to the longitudinal support 1-8 in the direction of its extension (i.e., the x-axis direction), thereby driving the 3D printing additive manufacturing apparatus to move. The guiding device includes a guide block and a vertical shaft 1-7, which is disposed on or in the guide block. The guide block can move on the longitudinal support 1-8 in the direction of its extension, and the vertical shaft 1-7 can move vertically relative to the guide block.

[0074] Subsequently, during the lateral and / or longitudinal movement of the additive manufacturing equipment on the 3D printing additive manufacturing device and the support, the additive manufacturing equipment can simultaneously deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device. Thus, the additive manufacturing equipment can use the Al-12Si alloy powder as raw material to perform additive manufacturing according to the structure of the nano-silicon anode material to be prepared, thereby obtaining the nano-silicon anode material.

[0075] For example, such as Figure 1 As shown, the 3D printing nozzle and powder feeding system of the 3D printing additive manufacturing apparatus are mounted on the longitudinal support 1-8 via a guiding device, such as a vertical axis 1-7. The longitudinal support 1-8 maintains the airtightness of the forming cavity during movement. The longitudinal support 1-8 can move within the forming cavity in the y-axis direction, and the vertical axis 1-7 can move relative to the longitudinal support 1-8 in the x-axis direction. In addition, the vertical axis 1-7 can move vertically relative to the guide block, thereby allowing the 3D printing nozzle and powder feeding system to move to any position within the forming cavity. Thus, additive manufacturing can be performed at any position within the additive manufacturing forming cavity 1-3 to obtain a shaped part of nano-silicon anode material for nano-sized lithium batteries.

[0076] It should be noted that, in this embodiment, the additive manufacturing equipment can complete the 3D printing additive manufacturing of parts through the linkage of the longitudinal support 1-8 and the guiding device (which includes the vertical axis 1-7). Furthermore, the movement of the longitudinal support 1-8 and the guiding device can be synchronous or asynchronous.

[0077] Furthermore, in one feasible embodiment, the structure of the above-mentioned nano-silicon anode material is a three-dimensional porous nano-silicon structure.

[0078] Based on this, when additive manufacturing equipment uses a 3D printing additive manufacturing device to produce shaped parts of nano-silicon anode materials for nano-lithium batteries, it can specifically use Al-12Si alloy powder as raw material through a 3D printing nozzle to perform additive manufacturing according to a three-dimensional porous nano-silicon structure, thereby preparing the nano-silicon anode material that is currently required to be manufactured.

[0079] Furthermore, in a feasible embodiment, after the step of "additive manufacturing according to the structure of the nano-silicon anode material using the Al-12Si alloy powder as raw material through the 3D printing nozzle" in step S203 above, the method for preparing the nano-sized lithium battery based on additive manufacturing of the present invention may further include the following steps:

[0080] Step A: Remove the aluminum inside the cellular structure obtained by additive manufacturing of the 3D printing nozzle according to the three-dimensional porous nano-silicon structure by the dealloying etching method, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0081] In this embodiment, when the additive manufacturing equipment uses a 3D printing additive manufacturing device to obtain the shaped part of the nano-silicon anode material for a nano-sized lithium battery, after using Al-12Si alloy powder as raw material through a 3D printing nozzle to obtain a cellular structure according to a three-dimensional porous nano-silicon structure, it further performs alloy etching on the cellular structure to remove the aluminum inside the cellular structure through a dealloying etching method. In this way, the additive manufacturing equipment can use the three-dimensional porous nano-silicon framework structure retained after removing the aluminum inside the cellular structure as the nano-silicon anode material for the nano-sized lithium battery to be prepared.

[0082] In this embodiment of the invention, the method for preparing nano-sized lithium batteries based on additive manufacturing provides that, upon detecting a manufacturing command, the additive manufacturing equipment begins to fill its additive manufacturing cavity, which is used to form the additively manufactured part, with inert gas. Then, after detecting that the additive manufacturing cavity is filled with inert gas, the additive manufacturing equipment further moves its 3D printing additive manufacturing device on a support, simultaneously performing additive manufacturing operations during the movement to produce the nano-silicon anode material for the nano-sized lithium battery.

[0083] Thus, the present invention, through the additive manufacturing equipment described above, can manufacture nano-silicon anode materials for lithium batteries in the additive manufacturing forming cavity using a movable 3D printing additive manufacturing device, thereby realizing the preparation of nano-silicon materials into lithium battery anode materials, providing strong technical support for the application of new anode materials for lithium batteries.

[0084] Further, please refer to Figure 3 , Figure 3 This is a schematic diagram of the hardware operating environment of the additive manufacturing equipment involved in any of the above embodiments.

[0085] It should be noted that the additive manufacturing equipment involved in the embodiments of the present invention includes: a support and an additive manufacturing forming cavity. A movable 3D printing additive manufacturing device is provided on the support, and the size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-lithium battery.

[0086] In some feasible embodiments, the support is two parallel, horizontally extending supports spaced a predetermined distance apart, the additive manufacturing cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports, the predetermined distance being greater than the maximum longitudinal dimension of the additive manufacturing cavity, and the 3D printing additive manufacturing apparatus is disposed on the longitudinal support.

[0087] In some feasible embodiments, the longitudinal support moves the 3D printing additive manufacturing apparatus on the transverse support via a guiding device.

[0088] In some feasible embodiments, the 3D printing additive manufacturing apparatus includes a 3D printing nozzle and a powder feeding system, the powder feeding system being used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle.

[0089] like Figure 3As shown, the additive manufacturing equipment according to embodiments of the present invention may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed RAM or a non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0090] Those skilled in the art will understand that Figure 3 The additive manufacturing equipment structure shown in the figures does not constitute a limitation on the additive manufacturing equipment. The additive manufacturing equipment involved in the embodiments of the present invention may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0091] like Figure 3 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a fabrication process for a nano-sized lithium battery based on additive manufacturing.

[0092] exist Figure 3 In the terminal shown, network interface 1004 is mainly used to connect to the backend server and communicate data with it; user interface 1003 is mainly used to connect to the client and communicate data with it; while processor 1001 can be used to call the additive manufacturing-based nano-lithium battery preparation program stored in memory 1005 and perform the following operations:

[0093] An inert gas is introduced into the additive manufacturing cavity of the additive manufacturing equipment;

[0094] After the inert gas is filled into the additive manufacturing cavity, the 3D printing additive manufacturing device of the additive manufacturing equipment moves on the support and performs additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0095] In some feasible embodiments, the processor 1001 can also be used to call the fabrication program for the additive manufacturing-based nano-lithium battery stored in the memory 1005 and perform the following operations:

[0096] The 3D printing additive manufacturing apparatus can move laterally and / or longitudinally on the support based on the guiding device;

[0097] During the movement of the 3D printing additive manufacturing device on the support, Al-12Si alloy powder containing nano and submicron cellular structures is delivered to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device.

[0098] The nano-silicon anode material is obtained by additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material.

[0099] In some feasible embodiments, the structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure.

[0100] In some feasible embodiments, the processor 1001 can also be used to call the additive manufacturing-based nano-lithium battery fabrication program stored in the memory 1005. After executing the step of additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material, the processor 1001 further performs the following operations:

[0101] The aluminum inside the cellular structure obtained by additive manufacturing of the 3D printing nozzle according to the three-dimensional porous nano-silicon structure is removed by dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0102] Furthermore, this invention also provides a fabrication apparatus for nano-sized lithium batteries based on additive manufacturing. The fabrication apparatus for nano-sized lithium batteries based on additive manufacturing is applied to the additive manufacturing equipment described above. The additive manufacturing equipment includes a support and an additive manufacturing forming cavity. A movable 3D printing additive manufacturing device is disposed on the support. The size of the additive manufacturing forming cavity is larger than the size of the nano-silicon anode material of the nano-sized lithium battery.

[0103] In some feasible embodiments, the support is two parallel, horizontally extending supports spaced a predetermined distance apart, the additive manufacturing cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports, the predetermined distance being greater than the maximum longitudinal dimension of the additive manufacturing cavity, and the 3D printing additive manufacturing apparatus is disposed on the longitudinal support.

[0104] In some feasible embodiments, the longitudinal support moves the 3D printing additive manufacturing apparatus on the transverse support via a guiding device.

[0105] In some feasible embodiments, the 3D printing additive manufacturing apparatus includes a 3D printing nozzle and a powder feeding system, the powder feeding system being used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle.

[0106] Please refer to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the fabrication apparatus for nano-sized lithium batteries based on additive manufacturing according to the present invention.

[0107] like Figure 4 As shown, the fabrication apparatus for nano-sized lithium batteries based on additive manufacturing of the present invention includes:

[0108] The inflation module 10 is used to fill the additive manufacturing cavity of the additive manufacturing equipment with inert gas;

[0109] The additive manufacturing module 20 is used to move on the support via the 3D printing additive manufacturing device of the additive manufacturing equipment after the additive manufacturing forming cavity is filled with the inert gas, and to perform additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0110] Optionally, the additive manufacturing module 20 includes:

[0111] A movement control unit for lateral and / or longitudinal movement of the 3D printing additive manufacturing apparatus on the support based on a guide device;

[0112] The powder feeding control unit is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device during the movement of the 3D printing additive manufacturing device on the support.

[0113] A 3D printing additive manufacturing unit is used to perform additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle to obtain the nano-silicon anode material according to the structure of the nano-silicon anode material.

[0114] Optionally, the structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure.

[0115] Optionally, the apparatus for fabricating nano-sized lithium batteries based on additive manufacturing of the present invention further includes:

[0116] The dealloying etching module is used to remove aluminum from the cellular structure inside the 3D printing nozzle obtained by additive manufacturing according to the three-dimensional porous nano-silicon structure through dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0117] It should be noted that the specific implementation of each functional module of the additive manufacturing-based nano-lithium battery preparation device of the present invention during operation is basically the same as the implementation of the additive manufacturing-based nano-lithium battery preparation method of the present invention described above, and will not be repeated here.

[0118] The present invention also provides a computer-readable storage medium storing a fabrication program for a nano-sized lithium battery based on additive manufacturing, wherein the fabrication program for the nano-sized lithium battery based on additive manufacturing, when executed by a processor, performs the following steps:

[0119] An inert gas is introduced into the additive manufacturing cavity of the additive manufacturing equipment;

[0120] After the inert gas is filled into the additive manufacturing cavity, the 3D printing additive manufacturing device of the additive manufacturing equipment moves on the support and performs additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries.

[0121] In some feasible embodiments, the step of moving the 3D printing additive manufacturing apparatus on the support and performing additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries includes:

[0122] The 3D printing additive manufacturing apparatus can move laterally and / or longitudinally on the support based on the guiding device;

[0123] During the movement of the 3D printing additive manufacturing device on the support, Al-12Si alloy powder containing nano and submicron cellular structures is delivered to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device.

[0124] The nano-silicon anode material is obtained by additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material.

[0125] In some feasible embodiments, the structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure.

[0126] In some feasible embodiments, after the step of additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle according to the structure of the nano-silicon anode material, the method further includes:

[0127] The aluminum inside the cellular structure obtained by additive manufacturing of the 3D printing nozzle according to the three-dimensional porous nano-silicon structure is removed by dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

[0128] It should be noted that the specific embodiments of the computer-readable storage medium of the present invention are basically the same as the embodiments of the preparation method of nano-lithium battery based on additive manufacturing of the present invention described above, and will not be repeated here.

[0129] The present invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the method for preparing nano-sized lithium batteries based on additive manufacturing as described in any of the above embodiments, which will not be elaborated here.

[0130] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0131] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0132] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause an additive manufacturing device to execute the methods described in the various embodiments of the present invention.

[0133] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for preparing nano-sized lithium batteries based on additive manufacturing, characterized in that, The preparation method is applied to an additive manufacturing equipment, which includes a support and an additive manufacturing cavity. A movable 3D printing additive manufacturing device is mounted on the support. The size of the additive manufacturing cavity is larger than the size of the nano-silicon anode material of the nano-lithium battery. The preparation method includes: An inert gas is introduced into the additive manufacturing cavity; After the additive manufacturing cavity is filled with the inert gas, the 3D printing additive manufacturing device moves on the support, and additive manufacturing is performed during the movement to obtain nano-silicon anode material for nano-sized lithium batteries; wherein... The support includes two parallel, horizontally extending supports spaced a predetermined distance apart, and a vertical support straddling the two horizontal supports. The additive manufacturing cavity is located between the two horizontal supports, and the 3D printing additive manufacturing device is mounted on the vertical support. The additive manufacturing equipment also includes a guiding device, through which the 3D printing additive manufacturing device is connected to the vertical support. The vertical support is movable within the additive manufacturing cavity in the y-axis direction, and the guiding device moves along the direction of extension of the vertical support. The guiding device moves vertically so that the 3D printing additive manufacturing device can move to any position within the additive manufacturing cavity during movement, while maintaining the airtightness of the additive manufacturing cavity. The 3D printing additive manufacturing apparatus includes a 3D printing nozzle and a powder feeding system. The powder feeding system is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle. During the movement of the 3D printing additive manufacturing apparatus on the support, the powder feeding system delivers Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle. The 3D printing nozzle uses the Al-12Si alloy powder as raw material to perform additive manufacturing according to the structure of the nano-silicon anode material. The structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure. The aluminum inside the cellular structure obtained by the 3D printing nozzle in additive manufacturing according to the three-dimensional porous nano-silicon structure is removed by a dealloying etching method, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum is used as the nano-silicon anode material.

2. The method for preparing a nano-sized lithium battery based on additive manufacturing as described in claim 1, characterized in that, The predetermined distance is greater than the maximum longitudinal dimension of the additive manufacturing cavity, and the 3D printing additive manufacturing device is mounted on the longitudinal support; The step of moving the support via the 3D printing additive manufacturing apparatus includes: The 3D printing additive manufacturing apparatus moves laterally and / or longitudinally on the support based on the guiding device.

3. A fabrication apparatus for nano-sized lithium batteries based on additive manufacturing, characterized in that, The preparation device is applied to an additive manufacturing equipment, which includes a support and an additive manufacturing cavity. A movable 3D printing additive manufacturing device is mounted on the support. The size of the additive manufacturing cavity is larger than the size of the nano-silicon anode material of the nano-lithium battery. The additive manufacturing apparatus includes: An inflation module is used to fill the additive manufacturing cavity of the additive manufacturing equipment with inert gas; An additive manufacturing module is used to move on a support via a 3D printing additive manufacturing device of the additive manufacturing equipment after the additive manufacturing forming cavity is filled with the inert gas, and to perform additive manufacturing during the movement to obtain nano-silicon anode material for nano-sized lithium batteries; wherein... The support includes two parallel, horizontally extending supports spaced a predetermined distance apart, and a vertical support straddling the two horizontal supports. The additive manufacturing cavity is located between the two horizontal supports, and the 3D printing additive manufacturing device is mounted on the vertical support. The additive manufacturing equipment also includes a guiding device, through which the 3D printing additive manufacturing device is connected to the vertical support. The vertical support is movable within the additive manufacturing cavity in the y-axis direction, and the guiding device moves along the direction of extension of the vertical support. The guiding device moves vertically so that the 3D printing additive manufacturing device can move to any position within the additive manufacturing cavity during movement, while maintaining the airtightness of the additive manufacturing cavity. The 3D printing additive manufacturing apparatus includes a 3D printing nozzle and a powder feeding system. The powder feeding system is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle. During the movement of the 3D printing additive manufacturing apparatus on the support, the powder feeding system delivers Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle. The 3D printing nozzle uses the Al-12Si alloy powder as raw material to perform additive manufacturing according to the structure of the nano-silicon anode material. The structure of the nano-silicon anode material is a three-dimensional porous nano-silicon structure. The aluminum inside the cellular structure obtained by the 3D printing nozzle in additive manufacturing according to the three-dimensional porous nano-silicon structure is removed by a dealloying etching method, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum is used as the nano-silicon anode material.

4. The fabrication apparatus for nano-sized lithium batteries based on additive manufacturing as described in claim 3, characterized in that, The support consists of two parallel, horizontally extending supports spaced at a predetermined distance. The additive manufacturing cavity is located on a longitudinal support straddling the two horizontal supports and between the two horizontal supports. The predetermined distance is greater than the maximum longitudinal dimension of the additive manufacturing cavity. The 3D printing additive manufacturing device is mounted on the longitudinal support. The additive manufacturing module includes: A movement control unit for lateral and / or longitudinal movement of the 3D printing additive manufacturing apparatus on the support based on the guide device.

5. The fabrication apparatus for nano-sized lithium batteries based on additive manufacturing as described in claim 4, characterized in that, The 3D printing additive manufacturing apparatus includes: a 3D printing nozzle and a powder feeding system, wherein the powder feeding system is used to deliver Al-12Si alloy powder containing nano and submicron cellular structures to the 3D printing nozzle; The additive manufacturing module further includes: The powder feeding control unit is used to deliver Al-12Si alloy powder containing nano- and submicron cellular structures to the 3D printing nozzle through the powder feeding system of the 3D printing additive manufacturing device during the movement of the 3D printing additive manufacturing device on the support. A 3D printing additive manufacturing unit is used to perform additive manufacturing using the Al-12Si alloy powder as raw material through the 3D printing nozzle to obtain the nano-silicon anode material according to the structure of the nano-silicon anode material.

6. The fabrication apparatus for nano-sized lithium batteries based on additive manufacturing as described in claim 5, characterized in that, The apparatus for fabricating nano-sized lithium batteries based on additive manufacturing further includes: The dealloying etching module is used to remove aluminum from the cellular structure inside the 3D printing nozzle obtained by additive manufacturing according to the three-dimensional porous nano-silicon structure through dealloying etching, so that the three-dimensional porous nano-silicon framework structure retained after removing the aluminum can be used as the nano-silicon anode material.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a fabrication program for a nano-sized lithium battery based on additive manufacturing, which, when executed by a processor, implements the steps of the fabrication method for a nano-sized lithium battery based on additive manufacturing as described in any one of claims 1 to 3.

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