CN116613338A

CN116613338A - Production system and method for bipolar plate of fuel cell

Info

Publication number: CN116613338A
Application number: CN202310882197.5A
Authority: CN
Inventors: 齐志刚
Original assignee: Beijing Xinyan Chuangneng Technology Co ltd
Current assignee: Beijing Xinyan Chuangneng Technology Co ltd
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2023-08-18
Anticipated expiration: 2043-07-18
Also published as: CN116613338B

Abstract

The invention provides a production system and a method for a bipolar plate of a fuel cell, which are characterized in that a first bipolar plate production model of a first customized bipolar plate is generated by utilizing customized demand data and a pre-configured bipolar plate model, so that a first three-dimensional image model of the first customized bipolar plate is obtained, and the first customized bipolar plate is produced by 3D printing production equipment according to the first three-dimensional image model and the first bipolar plate production model, so that the flow is simple and quick, the production efficiency is high, and the system is convenient and intelligent; in the process of producing a first customized bipolar plate by 3D printing production equipment, acquiring first real-time three-dimensional point cloud data of the bipolar plate in production in real time, generating a first real-time three-dimensional image model according to the first real-time three-dimensional point cloud data, and comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result; and adjusting working parameters of the 3D printing production equipment according to the first comparison result, and correcting machine errors in time, so that the bipolar plate with higher quality is obtained.

Description

Production system and method for bipolar plate of fuel cell

Technical Field

The invention relates to the technical field of fuel cells, in particular to a production system and a production method for a bipolar plate of a fuel cell.

Background

The fuel cell is a device for directly converting chemical energy of an oxidant and a reducing agent into electric energy through electrocatalytic reaction, and is a novel and efficient, safe, clean and flexible power generation technology, wherein the proton exchange membrane fuel cell has wide application prospect due to the remarkable advantages of high efficiency, high power density, low reaction temperature, no noise, no pollution and the like, the inside of the fuel cell mainly comprises a proton exchange membrane, a catalytic layer, a diffusion layer and a bipolar plate, and when the fuel cell works, the inside of the fuel cell generates the following reaction process that reaction gas in a bipolar plate flow channel diffuses to the catalytic layer through the diffusion layer, is adsorbed by a catalyst in the catalytic layer and generates electrocatalytic reaction; protons generated by the anode reaction are transferred to the cathode side through the proton exchange membrane, electrons reach the cathode through an external circuit, and the protons and the oxygen molecules react to combine into water. Each bipolar plate is formed by connecting two unipolar plates, one of the bipolar plates is a cathode plate, the other bipolar plate is an anode plate, and each of the cathode plate and the anode plate is provided with a concave-convex air flow field or a hydrogen flow field or a cooling liquid flow field.

The existing bipolar plate production process mainly comprises the following steps:

1. material preparation: the appropriate material, typically graphite, conductive polymer or metal, is selected and prepared in plate or powder form.

2. And (3) forming: the materials are processed into the desired shape and size by mechanical engraving, pressure forming, cutting, casting, etc. It is more common for graphite plates to be mechanically engraved and for metal plates to be cold-formed. After forming, a unipolar plate (i.e., a cathode plate or an anode plate) is formed.

3. And (3) cleaning: the monopole board is subjected to degreasing, pickling, water washing and other cleaning processes to remove impurities and surface pollutants.

4. Chemical treatment: filling, carbonizing, nitriding or fluoriding the graphite unipolar plate to improve the air tightness, corrosion resistance and conductivity; the metal unipolar plate is surface-coated to improve its corrosion resistance.

6. Manufacturing a bipolar plate: the cathode plate and the anode plate are combined into a bipolar plate by means of laser welding or bonding and the like.

The existing bipolar plate is manufactured by complex molding, laminating and surface treatment processes, the process is complex, and the production cost is high; moreover, quality control of the bipolar plates is also difficult, which makes the service life and reliability of the bipolar plates problematic.

Disclosure of Invention

Based on the problems, the invention provides a production system and a production method for a bipolar plate of a fuel cell, and the scheme of the invention can lead the bipolar plate production process to be simple and quick, have high production efficiency, are convenient and intelligent, and can produce a bipolar plate with higher quality.

In view of this, an aspect of the present invention proposes a production system for a bipolar plate of a fuel cell, comprising: the system comprises a control terminal, 3D printing production equipment and an Internet of things server;

the control terminal is configured to: receiving bipolar plate customization demand data and sending the customization demand data to the Internet of things server;

the internet of things server is configured to:

generating a first bipolar plate production model of a first customized bipolar plate according to the customized demand data and the pre-configured bipolar plate model;

generating a first three-dimensional image model of the first customized bipolar plate according to the first bipolar plate production model;

transmitting the first three-dimensional image model and the first bipolar plate production model to the 3D printing production equipment;

the 3D print production apparatus is configured to: printing and producing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model;

the control terminal is configured to: in the process of producing the first customized bipolar plate by the 3D printing production equipment, acquiring first real-time three-dimensional point cloud data of the bipolar plate in production in real time;

the internet of things server is configured to:

Generating a first real-time three-dimensional image model according to the first real-time three-dimensional point cloud data;

comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result, and sending the first comparison result to the control terminal;

the control terminal is configured to: and adjusting the working parameters of the 3D printing production equipment according to the first comparison fruits so as to correct the machine errors.

Optionally, the step of printing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, the 3D printing production apparatus is configured to:

identifying a first through hole and a first runner on the bipolar plate from the first three-dimensional image model;

obtaining a first material from the first bipolar plate production model that produces the first customized bipolar plate and a first attribute of the first material;

determining a first filling material and a first filling structure of a first filling member to be used for producing the first customized bipolar plate according to the first through hole and the first attribute;

determining a second filling material and a second filling structure of a second filling member to be used for producing the first customized bipolar plate according to the first runner and the first attribute;

And printing and producing the first filling piece and the second filling piece according to the first filling material and the first filling structure, the second filling material and the second filling structure respectively.

determining a first auxiliary material and a first auxiliary structure of a first auxiliary member to be used for producing the first customized bipolar plate according to the first through hole and the first attribute;

determining a second auxiliary material and a second auxiliary structure of a second auxiliary member to be adopted for producing the first customized bipolar plate according to the first runner and the first attribute;

and printing and producing the first auxiliary piece and the second auxiliary piece according to the first auxiliary material and the first auxiliary structure, the second auxiliary material and the second auxiliary structure respectively.

Optionally, the step of comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result, and sending the first comparison result to the control terminal, where the internet of things server is configured to:

acquiring first layered printing data generated by the 3D printing production equipment according to the first three-dimensional image model and the first bipolar plate production model;

obtaining a first layered three-dimensional image model from the first three-dimensional image model according to the first layered printing data;

determining a first real-time hierarchical three-dimensional image model corresponding to the first real-time three-dimensional image model according to the first hierarchical print data;

and comparing the first real-time layered three-dimensional image model with the first layered three-dimensional image model to obtain the first comparison result.

Optionally, the step of adjusting the working parameters of the 3D printing production device to correct the machine error according to the first comparison fruit, and the control terminal is configured to:

extracting a first difference point and a first difference value of the first real-time layered three-dimensional image model relative to the first layered three-dimensional image model from the first comparison result;

Determining a correction parameter according to the first difference point and the first difference value comparison result;

transmitting the correction parameters to the 3D printing production equipment;

and controlling the 3D printing production equipment to adjust working parameters of the 3D printing production equipment according to the correction parameters so as to correct machine errors.

Another aspect of the present invention provides a method for producing a bipolar plate of a fuel cell, applied to a production system for a bipolar plate of a fuel cell, the production system for a bipolar plate of a fuel cell including a control terminal, a 3D printing production device, an internet of things server, the method for producing a bipolar plate of a fuel cell comprising:

the control terminal receives bipolar plate customization demand data and sends the customization demand data to the Internet of things server;

the Internet of things server generates a first bipolar plate production model of a first customized bipolar plate according to the customized demand data and a pre-configured bipolar plate model;

the Internet of things server generates a first three-dimensional image model of the first customized bipolar plate according to the first bipolar plate production model;

the Internet of things server sends the first three-dimensional image model and the first bipolar plate production model to the 3D printing production equipment;

The 3D printing production equipment prints and produces the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model;

in the process of producing the first customized bipolar plate by the 3D printing production equipment, the control terminal acquires first real-time three-dimensional point cloud data of the bipolar plate in production in real time;

the Internet of things server generates a first real-time three-dimensional image model according to the first real-time three-dimensional point cloud data;

the Internet of things server compares the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result, and sends the first comparison result to the control terminal;

and the control terminal adjusts the working parameters of the 3D printing production equipment according to the first comparison fruits so as to correct the machine errors.

Optionally, the step of printing and producing the first customized bipolar plate by the 3D printing and producing device according to the first three-dimensional image model and the first bipolar plate production model includes:

Optionally, the step of comparing the first real-time three-dimensional image model with the first three-dimensional image model by the internet of things server to obtain a first comparison result, and sending the first comparison result to the control terminal includes:

Optionally, the step of adjusting, by the control terminal, the working parameters of the 3D printing production device according to the first comparison result to correct the machine error includes:

transmitting the correction parameters to the 3D printing production equipment;

and the 3D printing production equipment adjusts working parameters of the 3D printing production equipment according to the correction parameters so as to correct machine errors.

By adopting the technical scheme, the first bipolar plate production model of the first customized bipolar plate is generated by utilizing the customized demand data and the pre-configured bipolar plate model, so that the first three-dimensional image model of the first customized bipolar plate is obtained, and the first customized bipolar plate is produced by the 3D printing production equipment according to the first three-dimensional image model and the first bipolar plate production model, so that the flow is simple and rapid, the production efficiency is high, and the method is convenient and intelligent; in the process of producing a first customized bipolar plate by 3D printing production equipment, acquiring first real-time three-dimensional point cloud data of the bipolar plate in production in real time, generating a first real-time three-dimensional image model according to the first real-time three-dimensional point cloud data, and comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result; and adjusting working parameters of the 3D printing production equipment according to the first comparison result, and correcting machine errors in time, so that the bipolar plate with higher quality is obtained.

Drawings

FIG. 1 is a schematic block diagram of a production system for a fuel cell bipolar plate provided in one embodiment of the application;

fig. 2 is a flow chart of a method for producing a bipolar plate for a fuel cell according to an embodiment of the present application.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other. Additionally, while embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.

The terms "first" and "second" in the description and claims of the application and in the above figures are used for descriptive purposes only and to distinguish between different objects and should not be interpreted as indicating or implying a relative importance or implicitly indicating the number of technical features indicated (or describing a particular order). Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, for example, two, three, etc., unless specifically defined otherwise. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

A production system and method for a bipolar plate of a fuel cell according to some embodiments of the present invention are described below with reference to fig. 1 to 2.

As shown in fig. 1, one embodiment of the present invention provides a production system for a bipolar plate of a fuel cell, comprising: the system comprises a control terminal, 3D printing production equipment and an Internet of things server;

the internet of things server is configured to:

generating a first bipolar plate production model of the first customized bipolar plate (the first bipolar plate production model comprises data of dimensions such as materials, properties, structures, quality requirements, quantity, time limit/progress, images and the like) according to the customized demand data (such as specifications, functions/purposes, materials, quantity, time limit requirements, design drawings and the like) and a pre-configured bipolar plate model (the bipolar plate model comprises data of dimensions such as materials, properties, structures, quality requirements and the like);

in this step, the following may be determined from the first bipolar plate production model:

The material requirements are as follows: and selecting proper 3D printing materials such as ABS, PLA, PC, metal powder and the like according to requirements, and determining parameters such as printing temperature, printing precision and the like.

Performance requirements: the performance properties of the bipolar plate, such as mechanical properties, durability, etc., determine the print fill rate, layer thickness, degree of model detail, etc., where the fill rate and layer thickness affect overall performance.

Structural requirements are as follows: the structural characteristics of the bipolar plate determine the printing direction, whether a support structure is needed, and the like, and whether the printing is split or not is considered in the complex structure.

The quality requirements are as follows: the high quality requirements require the selection of a slow fine print mode, a maximum layer thickness, a minimum fill rate, etc. to obtain the best surface quality and detail rendering effect.

The number requirement is as follows: mass production requires selection of a fast print mode, appropriate increase of layer thickness, simplification of model details, etc. to improve print speed and efficiency.

According to the requirements, a standard 3D model file is created or modified by using 3D modeling software in combination with corresponding image data, and a final first three-dimensional image model of the first customized bipolar plate is determined.

in this step, the first customized bipolar plate is printed and produced mainly according to the first three-dimensional image model and the above-mentioned material requirements, performance requirements, structural requirements, quality requirements, quantity requirements, time limit requirements (if printing time needs to be evaluated, parallel printing and other methods are adopted to ensure on-time delivery) determined by the first bipolar plate production model.

the internet of things server is configured to:

According to the scheme, the first bipolar plate production model of the first customized bipolar plate is generated by utilizing the customized demand data and the pre-configured bipolar plate model, so that the first three-dimensional image model of the first customized bipolar plate is obtained, and the first customized bipolar plate is produced by the 3D printing production equipment according to the first three-dimensional image model and the first bipolar plate production model in a printing mode, so that the flow is simple and rapid, the production efficiency is high, and the method is convenient and intelligent; in the process of producing a first customized bipolar plate by 3D printing production equipment, acquiring first real-time three-dimensional point cloud data of the bipolar plate in production in real time, generating a first real-time three-dimensional image model according to the first real-time three-dimensional point cloud data, and comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result; and adjusting working parameters of the 3D printing production equipment according to the first comparison result, and correcting machine errors in time, so that the bipolar plate with higher quality is obtained.

It should be understood that the block diagram of the production system for a bipolar plate of a fuel cell shown in fig. 1 is only illustrative, and the number of modules shown is not intended to limit the scope of the present invention.

In some possible embodiments of the present invention, the step of printing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, the 3D printing production apparatus is configured to:

Identifying a first through hole and a first flow channel on the bipolar plate from the first three-dimensional image model, wherein the first through hole and the first flow channel can be multiple and can be different or identical in shape or structure;

determining a first filling material and a first filling structure of a first filling member to be used for producing the first customized bipolar plate according to the first through hole and the first attribute may be: determining a first filling material which can be peeled off from the first material according to the first attribute, and generating a first filling structure which fills the first through hole and can be clamped with the first through hole by using the first filling material according to the shape of the first through hole;

determining a second filling material and a second filling structure of a second filling member to be used for producing the first customized bipolar plate according to the first runner and the first attribute may be: determining a second filling material which can be peeled off from the first material according to the first attribute, and generating a second filling structure which fills the first flow channel and can be peeled off from the first flow channel by using the second filling material according to the shape of the first flow channel;

It will be appreciated that in order to integrally form the printed bipolar plate and to conform the structural details to the quality standards, in this embodiment, the unplanned portions (e.g., vias, runners, grooves, etc.) on the bipolar plate need to be filled with a first/second filler material that is different from the first material from which the bipolar plate is produced and that is peelable from the first material after forming in the form of a first/second filler structure (creating a first/second filler) to ensure that the structure/specifications of these unplanned portions conform to the quality standards.

Determining a first auxiliary material and a first auxiliary structure of a first auxiliary member to be used for producing the first customized bipolar plate according to the first through hole and the first attribute may be: determining a first auxiliary material which can be peeled off from the first material according to the first attribute, and generating a first auxiliary structure which can support the filler in the first through hole or can be clamped with the first through hole (when the filler in the first through hole is not arranged in the first through hole) by using the first auxiliary material according to the shape of the first through hole;

determining a second auxiliary material and a second auxiliary structure of a second auxiliary member to be used for producing the first customized bipolar plate according to the first runner and the first attribute may be: determining a second auxiliary material which can be peeled off from the first material according to the first attribute, and generating a second auxiliary structure which supports the first runner and can be peeled off from the first runner by using the second auxiliary material according to the shape of the first runner;

It will be appreciated that in order to further enhance the quality of the printed produced bipolar plate, an auxiliary member (e.g. a support member) may be used during printing to maintain a relatively stable spatial position of the printed object (the bipolar plate in printing), in this embodiment, the unplanned portion on the bipolar plate (e.g. the through-holes, the runners, the grooves, etc.) is supported in the form of a first/second auxiliary structure (creating the first/second auxiliary member) by a first/second auxiliary material that is different from the first material from which the bipolar plate is produced and that is peelable from the first material after forming. It should be noted that, in the case where the first/second filling member is filled in an unplanned portion (such as a through hole, a flow channel, a groove, etc.) on the bipolar plate, the first/second auxiliary member may be used to directly support the first/second filling member, which may make the printing process simpler and more efficient.

In some possible embodiments of the present invention, the step of printing and producing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model by the 3D printing and producing device further includes: and dynamically adjusting the proportion of each component in the raw materials and the supply speed of the raw materials according to the real-time working parameters and the external environment data of the 3D printing production equipment.

It can be understood that, in order to ensure that the printing process is not abnormal due to the influence of internal or external factors of the 3D printing production apparatus, in this embodiment, the proportion of each component in the raw material and the supply speed of the raw material are dynamically adjusted according to the real-time working parameters (such as temperature, humidity, raw material residual state, internal gas component data, vibration frequency, etc.) and external environment data (such as air temperature, external air component data, external air humidity, etc.) of the 3D printing production apparatus, which specifically may be:

a temperature sensor, a humidity sensor, a gas detection sensor and the like are arranged in the 3D printing production equipment, data such as temperature, humidity, gas components and the like in the equipment are monitored in real time, and vibration frequency and amplitude of the vibration sensor monitoring equipment can be also installed to be used as feedback of the working state of the equipment;

the sensor which is the same as or similar to the inside is arranged outside the 3D printing production equipment, the environmental data such as the external temperature, the humidity, the gas composition and the like are monitored, and the environmental change can influence the spraying and interlayer combination of the printing material;

analyzing by combining the internal real-time working parameters and the external environment data, if the difference between the internal real-time working parameters and the external environment data exceeds a preset threshold value, indicating that the conditions inside and outside the equipment are greatly changed, and correspondingly adjusting the supply of printing materials;

The 3D printing material is generally composed of a base material and a plurality of additives, the proportion of each component can be adjusted in real time according to the change of real-time working parameters and external environment data and a preset raw material proportion model, for example, the heat-resistant component can be increased when the internal temperature is increased, the waterproof component can be increased when the external humidity is increased, and the like;

the monitored real-time working parameters and the environmental data are input into a control system (such as a control terminal) of the 3D printing production equipment, and the correction value of the material supply quantity is automatically calculated, if the internal temperature is too high, the material supply speed can be slowed down; when the vibration is large, the supply can be stopped for a short time and the supply is stable;

the data of each sensor is continuously and circularly monitored and received, and control commands are calculated and output in real time to adjust the proportion and supply of printing materials.

In this embodiment, to dynamically adjust the ratio and supply speed of the printing material, it is critical to construct a sensing system capable of monitoring the internal working parameters and environmental data of the 3D printing production device in real time, and to establish a fast-response closed-loop control mechanism, and calculate and control the ratio and supply of the material by parameter variation.

In some possible embodiments of the present invention, the step of comparing the first real-time three-dimensional image model with the first three-dimensional image model to obtain a first comparison result, and sending the first comparison result to the control terminal, where the internet of things server is configured to:

It can be appreciated that, in order to ensure the accuracy of the whole printing process, in this embodiment, the first hierarchical print data generated by the 3D printing production apparatus according to the first three-dimensional image model and the first bipolar plate production model is obtained; obtaining a first layered three-dimensional image model (comprising each layered individual three-dimensional image to be printed and adjacent three-dimensional images of each layered combination) from the first three-dimensional image model according to the first layered print data; determining a first real-time hierarchical three-dimensional image model corresponding to the first real-time three-dimensional image model according to the first hierarchical print data; and comparing the first real-time layered three-dimensional image model with the first layered three-dimensional image model to obtain the first comparison result. Wherein, the determination of the layered print data mainly depends on the slicing process of the 3D model file (i.e. the first three-dimensional image model), and the following key parameters need to be determined during the slicing process:

Layer thickness: this determines the resolution of the printing, the smaller the layer thickness, the finer and finer the printing, but the longer the printing time, the need to choose the layer thickness according to the product characteristics and the minimum feature size of the 3D printing production equipment;

filling rate: the higher the filling rate, the more firm the product, but the more material and printing time is required to control the filling density inside the product model. The filling rate is also determined according to the actual requirements of the product, the general structural part is selected to be 20-40%, and the surface is selected to be the maximum filling rate;

and (3) printing a route: the method comprises an internal filling route and an external surface route, wherein the common routes include grid filling, honeycomb filling, diagonal filling and the like, the paths also determine printing time and quality, and the optimal paths need to be selected by combining geometric characteristics of a product model, quality requirements and the like;

and (3) supporting structure: automatically generating a supporting structure according to the unplanned part of the product model, wherein the supporting structure can ensure printing quality, but needs to be removed after printing so as to ensure that no influence is caused on the surface of the product;

number of split: when the model is excessively large or the shape is complex, split printing can be considered, and then assembly is performed, so that high quality of each part can be ensured;

in addition, parameters such as printing temperature, printing speed, starting position and the like need to be determined, and the selection of the parameters needs to comprehensively consider the performance of the 3D printing production equipment, the characteristics of printing materials and the requirements of a printing product model.

It can be seen that the key of determining the layered printing data is to select proper printing parameters, and obtain an optimal G-code printing code capable of meeting the capability of the 3D printing production equipment through slicing software, wherein the G-code contains comprehensive information such as a route, speed, temperature and the like of the printer to be printed layer by layer; the selected parameters are determined mainly according to the printing requirements, the performances of the printer and materials, and the like, and are required to be continuously optimized and corrected through testing.

In some possible embodiments of the present invention, the step of adjusting the operating parameters of the 3D printing production apparatus to correct the machine error according to the first comparison result, the control terminal is configured to:

extracting a first difference point and a first difference value of the first real-time layered three-dimensional image model relative to the first layered three-dimensional image model from the first comparison result (the comparison result can give geometric deviation data between a bipolar plate printed by 3D printing production equipment and a standard first three-dimensional image model, such as dimensional errors at a certain position, layer thickness abnormity and the like);

determining a correction parameter according to the comparison result of the first difference point and the first difference value (calculating the correction parameter of the working parameter to be adjusted, such as the moving speed of the nozzle, the extrusion amount and the like according to the first difference point and the first difference value);

Transmitting the correction parameters to the 3D printing production equipment;

In some possible embodiments of the present invention, each time a layer is printed, a first real-time three-dimensional image model is obtained (i.e., a corresponding first layered three-dimensional image model is obtained), and then the first real-time three-dimensional image model is compared with the first three-dimensional image model (i.e., the corresponding first layered three-dimensional image model extracted therefrom), and the first real-time three-dimensional image model is corrected according to the comparison result. According to the embodiment, the real-time 3D image scanning and comparison are continuously carried out in the whole printing process, the latest error feedback is obtained, correction measures are carried out in real time, and the geometric deviation between the bipolar plate constructed by the 3D printing production equipment and the design model can be reduced to the greatest extent.

In some possible embodiments of the present invention, after printing is completed, post-processing (such as flattening the outer surface, cleaning, polishing the contact surface, etc., and performing related tests to ensure that the mechanical and electrical properties of the bipolar plate reach the standards) is performed on the produced bipolar plate, then full-scale scanning is performed, and final comparison and inspection are performed with a standard 3D model (i.e., a first three-dimensional image model) to confirm that the precision of the bipolar plate meets the requirements.

In some possible embodiments of the present invention, in order to find an abnormality of the 3D printing production apparatus in time, the method further includes: acquiring real-time working data of the 3D printing production equipment in real time, acquiring historical working data of the 3D printing production equipment, and judging whether working abnormality occurs according to the real-time working data and the historical working data; if the work is abnormal, determining an abnormal type according to abnormal data and a deviation value in the real-time work data; and carrying out corresponding processing on the 3D printing production equipment according to the abnormal type.

The monitoring and control of 3D printing production equipment mainly has the following aspects:

and (3) monitoring printing temperature: the real-time temperature of the nozzle and the printing bed is monitored by the temperature sensor and is compared with the set temperature parameters, if the deviation is too large, the printing process can be suspended, and the premise of ensuring the printing quality of the temperature in the normal working range is ensured.

And (3) monitoring a driving motor: monitoring and controlling the working current and speed of the driving parts such as the stepping motor and the like can stop moving the protection mechanical parts if abnormality occurs.

Printhead and nozzle monitoring: whether abnormal deviation or blockage occurs is judged by monitoring the real-time positions of the printing head and the nozzles, and timely processing is needed to avoid printing failure.

And (3) material monitoring: and monitoring the supply quantity and the ejection quantity of the material, such as the phenomenon that the material is broken or unevenly ejected, and the alarm and the replacement of a material coil are required.

And (3) monitoring the printing progress: and (3) monitoring the printing progress of the G-code and the current printing layer number, and comparing with the expected printing time and the like, wherein if the progress is abnormally slow, whether a mechanical motion system and the like have faults or not is required to be detected.

Environmental monitoring: monitoring the working environment temperature and humidity, the abnormal environment condition can lead to the reduction of printing quality and even printing failure, and the environment parameters need to be adjusted to a proper range in time.

Monitoring a printing table: the size and the position of a printing object on the printing table are monitored, if the object is offset, the printing path of the printing head needs to be timely adjusted to compensate, and the printing precision is ensured.

Shooting and monitoring: the camera is used for monitoring the printing head and the printing table in real time so as to quickly respond when abnormal conditions are observed, and the method is a relatively direct monitoring mode.

Therefore, the monitoring of the 3D printing production equipment mainly monitors data in the aspects of temperature, motor, printing head, materials, environment and the like through various sensors and camera equipment, and immediately responds to measures such as pausing printing, alarming prompt and the like once abnormality occurs, so that the smooth process of 3D printing is ensured, and high-quality products are printed.

In some possible embodiments of the present invention, in order to find an abnormality of the 3D printing production apparatus in time, the method further includes: collecting three-dimensional point cloud data of the produced bipolar plate, and establishing a three-dimensional model according to the three-dimensional point cloud data; carrying out statistical analysis according to the three-dimensional model to determine whether quality problems exist; when quality problems exist, carrying out cluster analysis on the specific quality problems; judging whether each working link of the 3D printing production equipment is abnormal according to the clustering analysis result; and when the abnormality exists, carrying out corresponding processing on the 3D printing production equipment according to the type of the abnormality.

Referring to fig. 2, another embodiment of the present invention provides a method for producing a bipolar plate of a fuel cell, which is applied to a production system for a bipolar plate of a fuel cell, wherein the production system for a bipolar plate of a fuel cell includes a control terminal, a 3D printing production device, and an internet of things server, and the method for producing a bipolar plate of a fuel cell includes:

the internet of things server generates a first bipolar plate production model of a first customized bipolar plate (the first bipolar plate production model comprises data of dimensions such as materials, performances, structures, quality requirements, quantity, time limit/progress, images and the like) according to the customized demand data (such as specifications, functions/purposes, materials, quantity, time limit requirements, design drawings and the like of the bipolar plate) and a pre-configured bipolar plate model (the bipolar plate model comprises data of dimensions such as materials, performances, structures, quality requirements and the like);

Performance requirements: the print fill rate, layer thickness, degree of model detail, etc. are determined according to the performance requirements of the bipolar plate, such as mechanical properties, durability, etc., where the fill rate and layer thickness affect overall performance.

The number requirement is as follows: mass production requires selection of a fast print mode, appropriate increase of layer thickness and fill rate, simplification of model details, etc. to improve print speed and efficiency.

In some possible embodiments of the present invention, the 3D printing production apparatus prints the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, including:

In some possible embodiments of the present invention, the step of comparing the first real-time three-dimensional image model with the first three-dimensional image model by the internet of things server to obtain a first comparison result, and sending the first comparison result to the control terminal includes:

In some possible embodiments of the present invention, the step of adjusting, by the control terminal, the operating parameters of the 3D printing production device according to the first comparison result to correct the machine error includes:

Transmitting the correction parameters to the 3D printing production equipment;

In some possible embodiments of the present invention, in order to find an abnormality of the 3D printing production apparatus in time, the method further includes: acquiring real-time working data of the 3D printing production equipment in real time, acquiring historical working data of the 3D printing production equipment, and judging whether working abnormality occurs according to the real-time working data and the historical working data; if the work is abnormal, determining an abnormal type according to abnormal data and a deviation value in the real-time work data; and carrying out corresponding processing on the 3D printing production equipment according to the abnormal type. The monitoring and control of 3D printing production equipment mainly has the following aspects:

In some possible embodiments of the present application, in order to find an abnormality of the 3D printing production apparatus in time, the method further includes: collecting three-dimensional point cloud data of the produced bipolar plate, and establishing a three-dimensional model according to the three-dimensional point cloud data; carrying out statistical analysis according to the three-dimensional model to determine whether quality problems exist; when quality problems exist, carrying out cluster analysis on the specific quality problems; judging whether each working link of the 3D printing production equipment is abnormal according to the clustering analysis result; and when the abnormality exists, carrying out corresponding processing on the 3D printing production equipment according to the type of the abnormality.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be implemented by a program that instructs associated hardware, and the program may be stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

Although the present invention is disclosed above, the present invention is not limited thereto. Variations and modifications, including combinations of the different functions and implementation steps, as well as embodiments of the software and hardware, may be readily apparent to those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A production system for a bipolar plate of a fuel cell, comprising: the system comprises a control terminal, 3D printing production equipment and an Internet of things server;

the internet of things server is configured to:

2. The production system for a fuel cell bipolar plate according to claim 1, wherein the step of printing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, the 3D printing production apparatus is configured to:

3. The production system for a fuel cell bipolar plate according to claim 1, wherein the step of printing the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, the 3D printing production apparatus is configured to:

4. A production system for a bipolar plate for a fuel cell according to any one of claims 1 to 3, wherein said step of comparing said first real-time three-dimensional image model with said first three-dimensional image model to obtain a first comparison result, and transmitting said first comparison result to said control terminal, said internet of things server is configured to:

5. The production system for a bipolar plate for a fuel cell according to claim 4, wherein said step of adjusting an operating parameter of said 3D printing production apparatus to correct a machine error according to said first comparison result, said control terminal is configured to:

transmitting the correction parameters to the 3D printing production equipment;

6. A production method for a bipolar plate of a fuel cell, which is characterized by being applied to a production system for a bipolar plate of a fuel cell, wherein the production system for the bipolar plate of the fuel cell comprises a control terminal, 3D printing production equipment and an internet of things server, and the production method for the bipolar plate of the fuel cell comprises the following steps:

7. The method for producing a bipolar plate for a fuel cell according to claim 6, wherein said 3D printing production apparatus prints the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, comprising:

8. The method for producing a bipolar plate for a fuel cell according to claim 6, wherein said 3D printing production apparatus prints the first customized bipolar plate according to the first three-dimensional image model and the first bipolar plate production model, comprising:

9. The method for producing a bipolar plate for a fuel cell according to any one of claims 6 to 8, wherein the step of comparing the first real-time three-dimensional image model with the first three-dimensional image model by the internet of things server to obtain a first comparison result, and transmitting the first comparison result to the control terminal includes:

10. The method for producing a bipolar plate for a fuel cell according to claim 9, wherein said step of adjusting an operating parameter of said 3D printing production apparatus to correct a machine error according to said first comparison result, comprises:

transmitting the correction parameters to the 3D printing production equipment;