Processing workshop ventilation control system for resource utilization of lithium iron phosphate batteries

Abstract

The invention relates to a processing workshop ventilation control system for resource utilization of lithium iron phosphate batteries. The processing workshop ventilation control system comprises a workshop digital control platform, a workshop information base, a regional environment analysis unit, a diffusion division unit, a workshop control unit, a ventilation processing unit and a control management unit, according to the method, the environment of the processing workshop is analyzed from the perspective of region division, the environmental hazard condition of each region of the processing workshop is known, so that the processing workshop is subjected to region division management, and the regional environmental hazard value of the high-risk region is subjected to regional hazard diffusion risk assessment analysis in an information progressive manner, so that the risk of the processing workshop is improved. Meanwhile, analysis is carried out in combination with the environmental hazard diffusion management capability of the high-risk area, the high-risk environmental hazard diffusion area is processed preferentially, continuous deterioration of the environment of the processing workshop is reduced, workshop management demand division analysis is carried out in a deep mode, and the environmental quality of the processing workshop is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of workshop ventilation control, and in particular to a ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries. Background Art

[0002] Lithium and its compounds are new green energy materials that are closely related to people's lives. However, scrapped lithium-ion batteries do not contain heavy metals such as lead, cadmium, and mercury, and have relatively little environmental pollution. However, they contain valuable metals such as cobalt, nickel, manganese, and lithium, and toxic and harmful substances such as lithium hexafluorophosphate. Improper disposal can still easily cause serious pollution and waste of resources. In addition, discarded lithium-ion batteries contain a large amount of rare and precious metals, and have significant economic benefits. Therefore, how to scientifically, greenly, and efficiently recover lithium and other valuable metals from waste lithium batteries has become a technical hotspot in the current recycling field.

[0003] However, in the traditional control technology of processing workshops for recycling lithium iron phosphate batteries, it is difficult to carry out regional management of the environment of the processing workshop, which greatly reduces the environmental management efficiency of the processing workshop, and it is also impossible to analyze the risk of environmental hazard diffusion in the processing workshop, and it is impossible to achieve reasonable and targeted control, which is not conducive to the safe production of the processing workshop, and also increases the harm of the processing workshop environment to workers;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries to solve the above-mentioned technical defects.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries, comprising a workshop digital control platform, a workshop information library, a regional environment analysis unit, a diffusion division unit, a workshop control unit, a ventilation processing unit and a control management unit;

[0007] The workshop digital control platform is used to retrieve the environmental change information of the processing workshop from the workshop information library and send the environmental change information to the regional environment analysis unit;

[0008] After receiving the environmental change information, the regional environmental analysis unit immediately performs regional environmental hazard risk analysis on the environmental change information to obtain low-risk areas and high-risk areas;

[0009] The diffusion division unit is used to retrieve the regional environmental hazard value of the high-risk area and conduct regional hazard diffusion risk assessment analysis, discriminate the obtained continuous environmental hazard value, obtain a decline signal and a feedback instruction, and when the feedback instruction is generated, compare and analyze the obtained hazard diffusion assessment coefficient, and send the high-risk signal and diffusion signal to the control management unit;

[0010] The workshop control unit is used to respond to high-risk signals and perform workshop management demand division analysis, compare and analyze the obtained workshop management demand ratio, and obtain the control demand level KS;

[0011] The ventilation processing unit is used to collect environmental processing information in high-risk areas, and perform environmental ventilation processing obstacle assessment and analysis on the environmental processing information, and send the obtained normal signal or abnormal signal to the control management unit through the diffusion division unit.

[0012] Preferably, the regional environmental hazard risk analysis process of the regional environmental analysis unit is as follows:

[0013] The working hours of the processing workshop are collected, and the processing workshop is divided into i sub-regional blocks, where i is a natural number greater than zero. The environmental change information of each sub-regional block during the working hours is obtained. The environmental change information includes the regional environmental hazard value and the continuous hazard duration. The regional environmental hazard value and the continuous hazard duration are compared and analyzed with the preset regional environmental hazard value threshold and the preset continuous hazard duration threshold entered and stored internally to obtain low-risk areas and high-risk areas.

[0014] Preferably, the regional environmental hazard value represents the number of times the corresponding values ​​of environmental hazard parameters exceed preset thresholds, and the environmental hazard parameters include dust concentration and harmful gases; the continuous hazard duration represents the duration between the moment when the corresponding value of the first parameter in the environmental hazard parameters exceeds the preset threshold and the moment when the corresponding values ​​of the environmental hazard parameters are all lower than the preset threshold.

[0015] Preferably, the environmental ventilation processing obstacle assessment and analysis process of the ventilation processing unit is as follows:

[0016] The working period is divided into g sub-working periods, where g is a natural number greater than zero, and the environmental treatment information of each high-risk area in each sub-working period is obtained. The environmental treatment information includes a ventilation deviation value and a ventilation degradation index. A rectangular coordinate system is established with the number of sub-working periods as the X-axis and the ventilation deviation value and the ventilation degradation index as the Y-axis. The ventilation deviation value curve and the ventilation degradation index curve are respectively drawn by plotting points;

[0017] The changing trend value of the ventilation deviation value curve and the difference value between the ventilation degradation index curve and the preset ventilation degradation index curve are obtained, and they are set as the ventilation obstruction value and the ventilation floating value respectively, and the ventilation obstruction value and the ventilation floating value are discriminated and analyzed to obtain the number of ventilation obstruction values ​​and ventilation floating values ​​that are greater than or equal to the corresponding preset ventilation obstruction value threshold and the preset ventilation floating value threshold, and set them as the obstruction ventilation number, and the obstruction ventilation number is discriminated and processed to obtain a normal signal or an abnormal signal.

[0018] Preferably, the ventilation deviation value represents the ratio between the ventilation efficiency and the energy consumption value of the processing workshop; and the ventilation degradation index represents the difference between the maximum ventilation rate and the minimum ventilation rate of the processing workshop.

[0019] Preferably, the regional hazard diffusion risk assessment and analysis process of the diffusion division unit is as follows:

[0020] The regional environmental hazard values ​​of each high-risk area in the next j working periods are obtained, where j is a natural number greater than zero. A rectangular coordinate system is established with the number of working periods as X and the regional environmental hazard value as the Y axis. A regional environmental hazard value curve is drawn by plotting points. The descending height corresponding to the descending line segment and the rising height corresponding to the rising segment in the regional environmental hazard value curve are obtained. The value obtained by subtracting the descending height corresponding to the descending line segment from the rising height corresponding to the rising segment is set as the continuous environmental hazard value, and the continuous environmental hazard value is discriminated and processed to generate a descending signal and a feedback instruction.

[0021] Preferably, when a feedback instruction is generated, the obstructed ventilation number corresponding to the high-risk area is retrieved, and the value obtained by multiplying the sum of the continuous environmental hazard value and the corresponding numerical value of the obstructed ventilation number by the preset error correction factor a1 is set as the hazard diffusion assessment coefficient, and a1 is greater than zero. The hazard diffusion assessment coefficient is compared and analyzed with the preset hazard diffusion assessment coefficient threshold value entered and stored internally to obtain a high-risk signal and a diffusion signal.

[0022] Preferably, the workshop management demand division analysis process of the workshop control unit is as follows:

[0023] Obtain the ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas, and set the ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas as the workshop management demand ratio, compare and analyze the workshop management demand ratio with the internally entered and stored presets E1 and E2, E1<E2, and obtain the first-level demand, second-level demand and third-level demand, and set the first-level demand, second-level demand and third-level demand as the control demand level KS, KS=1, 2, 3.

[0024] The beneficial effects of the present invention are as follows:

[0025] (1) The present invention analyzes the environment of the processing workshop from the perspective of regional division to understand the environmental hazards of each area of ​​the processing workshop so as to divide the processing workshop into regions for management, and conducts environmental ventilation treatment obstacle assessment and analysis on the environmental treatment information of high-risk areas through information feedback. On the one hand, it helps to timely manage the ventilation of high-risk areas in the processing workshop to reduce the impact of ventilation on the environment of the processing workshop, and on the other hand, it helps to effectively control the risk of environmental diffusion in the processing workshop;

[0026] (2) The present invention also uses information progression to analyze the regional environmental hazard values ​​of high-risk areas and conducts regional hazard diffusion risk assessment, and at the same time analyzes the environmental hazard diffusion management capabilities of high-risk areas, thereby giving priority to areas where high-risk environmental hazards diffuse, which helps to reduce the continuous deterioration of the processing workshop environment, and conducts in-depth analysis of workshop management needs division, so as to rationally control and manage the environment of the processing workshop based on information feedback, improve the environmental quality of the processing workshop, and reduce the harm of the processing workshop environment to workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings;

[0028] Figure 1 It is a flowchart of the system of the present invention;

[0029] Figure 2 It is a local analysis reference diagram of the first embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 to Figure 2 As shown, the present invention is a ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries, including a workshop digital control platform, a workshop information library, a regional environment analysis unit, a diffusion division unit, a workshop control unit, a ventilation processing unit and a control management unit;

[0032] The workshop information database is connected to the workshop digital control platform in a one-way communication manner, the workshop digital control platform is connected to the regional environment analysis unit in a one-way communication manner, the regional environment analysis unit is connected to the diffusion division unit, the ventilation processing unit and the control management unit in a one-way communication manner, the ventilation processing unit is connected to the diffusion division unit in a one-way communication manner, the diffusion division unit is connected to the workshop control unit and the control management unit in a one-way communication manner, and the workshop control unit is connected to the control management unit in a one-way communication manner;

[0033] The workshop digital control platform is used to retrieve the environmental change information of the processing workshop from the workshop information database and send the environmental change information to the regional environmental analysis unit. After receiving the environmental change information, the regional environmental analysis unit immediately performs regional environmental hazard risk analysis on the environmental change information to understand the environmental hazard situation of each area of ​​the processing workshop so as to divide the processing workshop into regions for management. The specific regional environmental hazard risk analysis process is as follows:

[0034] The working hours of the processing workshop are collected, and the processing workshop is divided into i sub-regional blocks, where i is a natural number greater than zero. The environmental change information of each sub-regional block during the working hours is obtained. The environmental change information includes the regional environmental hazard value and the duration of continuous hazard. The regional environmental hazard value and the duration of continuous hazard are compared and analyzed with the preset regional environmental hazard value threshold and the preset duration of continuous hazard threshold that are entered and stored internally:

[0035] If the regional environmental hazard value is less than the preset regional environmental hazard value threshold, and the duration of continuous hazard is less than the preset duration of continuous hazard threshold, the corresponding sub-region is determined to be a low-risk region;

[0036] If the regional environmental hazard value is greater than or equal to the preset regional environmental hazard value threshold, or the continuous hazard duration is greater than or equal to the preset continuous hazard duration threshold, the corresponding sub-area is determined to be a high-risk area, and the low-risk area and the high-risk area are sent to the control management unit. After receiving the low-risk area and the high-risk area, the control management unit immediately displays the preset warning text corresponding to the low-risk area and the high-risk area on the corresponding area, so as to intuitively understand the environmental quality of each sub-area of ​​the processing workshop, so as to carry out targeted control management;

[0037] In the embodiment of the present invention, the regional environmental hazard value indicates the number of values ​​corresponding to the environmental hazard parameters exceeding the preset threshold value. The environmental hazard parameters include dust concentration, harmful gases, etc. It should be noted that the larger the value of the regional environmental hazard value, the worse the environmental quality of the processing workshop;

[0038] In the embodiment of the present invention, the duration of continuous hazard refers to the duration from the moment when the corresponding value of the first parameter in the environmental hazard parameter exceeds the preset threshold to the moment when the corresponding values ​​of the environmental hazard parameter are all lower than the preset threshold. It should be noted that the duration of continuous hazard is an influencing parameter reflecting the continuous state of hazard in the processing workshop environment;

[0039] The diffusion division unit is used to retrieve the regional environmental hazard values ​​of high-risk areas and conduct regional hazard diffusion risk assessment and analysis, and then give priority to areas where high-risk environmental hazards diffuse, which helps to reduce the continuous deterioration of the processing workshop environment. The specific regional hazard diffusion risk assessment and analysis process is as follows:

[0040] Get the regional environmental hazard values ​​of each high-risk area in the next j working periods, where j is a natural number greater than zero. Take the number of working periods as X and the regional environmental hazard value as the Y axis to establish a rectangular coordinate system. Draw the regional environmental hazard value curve by plotting points. Get the descending height corresponding to the descending line segment and the rising height corresponding to the rising segment in the regional environmental hazard value curve. Subtract the descending height corresponding to the descending line segment from the rising height corresponding to the rising segment from the descending height corresponding to the descending line segment, and set the value obtained as the continuous environmental hazard value. Then, perform discrimination processing on the continuous environmental hazard value:

[0041] If the continuous environmental hazard value is less than or equal to the preset continuous environmental hazard value threshold, a decreasing signal is generated;

[0042] If the continuous environmental hazard value is greater than the preset continuous environmental hazard value threshold, a feedback instruction is generated. When the feedback instruction is generated, the obstruction ventilation number of the corresponding high-risk area is retrieved, and the sum of the continuous environmental hazard value and the corresponding value of the obstruction ventilation number is multiplied by the preset error correction factor a1 and set as the hazard diffusion assessment coefficient. If a1 is greater than zero, the hazard diffusion assessment coefficient is compared and analyzed with the preset hazard diffusion assessment coefficient threshold stored in the internal input:

[0043] If the ratio between the hazard diffusion assessment coefficient and the preset hazard diffusion assessment coefficient threshold is less than 1, a high risk signal is generated;

[0044] If the ratio between the hazard diffusion assessment coefficient and the preset hazard diffusion assessment coefficient threshold is greater than or equal to 1, a diffusion signal is generated, and the high-risk signal and the diffusion signal are sent to the control management unit. After receiving the high-risk signal and the diffusion signal, the control management unit immediately displays the preset warning text corresponding to the high-risk signal on the corresponding high-risk area, and displays the corresponding sorting number on the corresponding high-risk area in the order of the hazard diffusion assessment coefficient from large to small, thereby giving priority to the areas where high-risk environmental hazards spread, thereby helping to reduce the continuous deterioration of the processing workshop environment;

[0045] It should be noted that the preset error correction factor a1 is artificially set, and a1 is greater than zero.

[0046] Embodiment 2: The workshop control unit is used to respond to high-risk signals and perform workshop management demand division analysis, so as to rationally control and manage the environment of the processing workshop according to the information feedback, so as to improve the environmental quality of the processing workshop, thereby reducing the harm of the processing workshop environment to workers. The specific workshop management demand division analysis process is as follows:

[0047] The ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas is obtained, and the ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas is set as the workshop management demand ratio. The workshop management demand ratio is compared and analyzed with the preset E1 and preset E2 stored in the internal input, and E1<E2:

[0048] If the workshop management demand ratio is greater than E2, it is determined to be a first-level demand;

[0049] If E1≤workshop management demand ratio≤E2, it is determined to be secondary demand;

[0050] If the workshop management demand ratio is less than E1, it is determined to be a third-level demand, wherein the control demands corresponding to the first-level demand, the second-level demand and the third-level demand increase in sequence, and the first-level demand, the second-level demand and the third-level demand are set as the control demand level KS, KS=1, 2, 3, that is, when the control demand level KS=1, it indicates the first-level demand, when the control demand level KS=2, it indicates the second-level demand, and when the control demand level KS=3, it indicates the third-level demand. The control demand level KS is sent to the control management unit. After receiving the control demand level KS, the control management unit immediately displays the preset warning text corresponding to the control demand level KS, so as to rationally control and manage the environment of the processing workshop according to the information feedback, so as to improve the environmental quality of the processing workshop, thereby reducing the harm of the processing workshop environment to workers;

[0051] The ventilation processing unit is used to collect environmental processing information of high-risk areas and conduct environmental ventilation processing barrier assessment and analysis on the environmental processing information. On the one hand, it helps to timely manage the ventilation of high-risk areas in the processing workshop to reduce the impact of ventilation on the processing workshop environment. On the other hand, it helps to effectively control the risk of environmental diffusion in the processing workshop. The specific environmental ventilation processing barrier assessment and analysis process is as follows:

[0052] The working period is divided into g sub-working periods, where g is a natural number greater than zero, and the environmental treatment information of each high-risk area in each sub-working period is obtained. The environmental treatment information includes a ventilation deviation value and a ventilation degradation index. A rectangular coordinate system is established with the number of sub-working periods as the X-axis and the ventilation deviation value and the ventilation degradation index as the Y-axis. The ventilation deviation value curve and the ventilation degradation index curve are respectively drawn by plotting points;

[0053] The change trend value of the ventilation deviation value curve and the difference value between the ventilation degradation index curve and the preset ventilation degradation index curve are obtained, and they are set as the ventilation obstruction value and the ventilation floating value respectively, and the ventilation obstruction value and the ventilation floating value are discriminated and analyzed, and the number of ventilation obstruction values ​​and ventilation floating values ​​greater than or equal to the corresponding preset ventilation obstruction value threshold and preset ventilation floating value threshold is obtained, and it is set as the obstruction ventilation number, and the obstruction ventilation number is discriminated and processed:

[0054] If the number of blocked ventilation = zero, a normal signal is generated;

[0055] If the number of ventilation obstructions = 1 or the number of ventilation obstructions = 2, an abnormal signal is generated, and the normal signal or the abnormal signal is sent to the control management unit through the diffusion division unit. After receiving the normal signal or the abnormal signal, the control management unit immediately makes a preset warning operation corresponding to the normal signal or the abnormal signal, so as to timely manage the ventilation of the processing workshop, so as to reduce the impact of ventilation on the environment of the processing workshop, and at the same time help to effectively control the environment of the processing workshop;

[0056] In the embodiment of the present invention, the ventilation deviation value represents the ratio between the ventilation efficiency and the energy consumption value of the processing workshop. It should be noted that the larger the value of the ventilation deviation value, the greater the risk of harmful environmental gas in the processing workshop, the worse the environmental quality of the processing workshop, and the greater the risk of environmental hazard diffusion;

[0057] In the embodiment of the present invention, the ventilation degradation index represents the difference between the maximum ventilation rate and the minimum ventilation rate of the processing workshop. It should be noted that the larger the value of the ventilation degradation index is, the greater the risk of abnormal continuous stability performance of the ventilation of the processing workshop is.

[0058] In summary, the environment of the processing workshop is analyzed from the perspective of regional division to understand the environmental hazards of each area of ​​the processing workshop so as to carry out regional management of the processing workshop. The environmental treatment information of the high-risk area is evaluated and analyzed through information feedback. On the one hand, it is helpful to timely manage the ventilation of the high-risk areas of the processing workshop to reduce the impact of ventilation on the environment of the processing workshop. On the other hand, it is helpful to effectively control the risk of environmental diffusion in the processing workshop.

[0059] By using information progression to analyze the regional environmental hazard values ​​of high-risk areas and conduct regional hazard diffusion risk assessment, combined with analysis of the environmental hazard diffusion management capabilities of high-risk areas, and then giving priority to areas where high-risk environmental hazards diffuse, it will help reduce the continuous deterioration of the processing workshop environment, and conduct in-depth analysis of workshop management needs division, so as to rationally control and manage the environment of the processing workshop based on information feedback, improve the environmental quality of the processing workshop, and reduce the harm of the processing workshop environment to workers.

[0060] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technicians in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value. The above is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, shall make equivalent replacements or changes according to the technical solution and inventive concept of the present invention, which shall be covered within the protection scope of the present invention.

Claims

1. A ventilation control system for processing workshops for resource utilization of lithium iron phosphate batteries, characterized in that: It includes workshop digital control platform, workshop information database, regional environment analysis unit, diffusion division unit, workshop control unit, ventilation processing unit and control management unit; The workshop digital control platform is used to retrieve the environmental change information of the processing workshop from the workshop information library and send the environmental change information to the regional environment analysis unit; After receiving the environmental change information, the regional environmental analysis unit immediately performs regional environmental hazard risk analysis on the environmental change information to obtain low-risk areas and high-risk areas; The diffusion division unit is used to retrieve the regional environmental hazard value of the high-risk area and conduct regional hazard diffusion risk assessment analysis, discriminate the obtained continuous environmental hazard value, obtain a decline signal and a feedback instruction, and when the feedback instruction is generated, compare and analyze the obtained hazard diffusion assessment coefficient, and send the high-risk signal and diffusion signal to the control management unit; The workshop control unit is used to respond to high-risk signals and perform workshop management demand division analysis, compare and analyze the obtained workshop management demand ratio, and obtain the control demand level KS; The ventilation processing unit is used to collect environmental processing information in high-risk areas, and perform environmental ventilation processing obstacle assessment and analysis on the environmental processing information, and send the obtained normal signal or abnormal signal to the control management unit through the diffusion division unit.

2. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 1, characterized in that: The regional environmental hazard risk analysis process of the regional environmental analysis unit is as follows: The working hours of the processing workshop are collected, and the processing workshop is divided into i sub-regional blocks, where i is a natural number greater than zero. The environmental change information of each sub-regional block during the working hours is obtained. The environmental change information includes the regional environmental hazard value and the continuous hazard duration. The regional environmental hazard value and the continuous hazard duration are compared and analyzed with the preset regional environmental hazard value threshold and the preset continuous hazard duration threshold entered and stored internally to obtain low-risk areas and high-risk areas.

3. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 2, characterized in that: The regional environmental hazard value represents the number of times the corresponding values ​​of the environmental hazard parameters exceed the preset threshold, and the environmental hazard parameters include dust concentration and harmful gases; the continuous hazard duration represents the duration between the moment when the corresponding value of the first parameter in the environmental hazard parameters exceeds the preset threshold and the moment when the corresponding values ​​of the environmental hazard parameters are all lower than the preset threshold.

4. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 1, characterized in that: The environmental ventilation processing obstacle assessment and analysis process of the ventilation processing unit is as follows: The working period is divided into g sub-working periods, where g is a natural number greater than zero, and the environmental treatment information of each high-risk area in each sub-working period is obtained. The environmental treatment information includes a ventilation deviation value and a ventilation degradation index. A rectangular coordinate system is established with the number of sub-working periods as the X-axis and the ventilation deviation value and the ventilation degradation index as the Y-axis. The ventilation deviation value curve and the ventilation degradation index curve are respectively drawn by plotting points; The changing trend value of the ventilation deviation value curve and the difference value between the ventilation degradation index curve and the preset ventilation degradation index curve are obtained, and they are set as the ventilation obstruction value and the ventilation floating value respectively, and the ventilation obstruction value and the ventilation floating value are discriminated and analyzed to obtain the number of ventilation obstruction values ​​and ventilation floating values ​​that are greater than or equal to the corresponding preset ventilation obstruction value threshold and the preset ventilation floating value threshold, and set them as the obstruction ventilation number, and the obstruction ventilation number is discriminated and processed to obtain a normal signal or an abnormal signal.

5. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 4, characterized in that: The ventilation deviation value represents the ratio between the ventilation efficiency and the energy consumption value of the processing workshop; the ventilation degradation index represents the difference between the maximum ventilation rate and the minimum ventilation rate of the processing workshop.

6. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 1, characterized in that: The regional hazard diffusion risk assessment and analysis process of the diffusion division unit is as follows: The regional environmental hazard values ​​of each high-risk area in the next j working periods are obtained, where j is a natural number greater than zero. A rectangular coordinate system is established with the number of working periods as X and the regional environmental hazard value as the Y axis. A regional environmental hazard value curve is drawn by plotting points. The descending height corresponding to the descending line segment and the rising height corresponding to the rising segment in the regional environmental hazard value curve are obtained. The value obtained by subtracting the descending height corresponding to the descending line segment from the rising height corresponding to the rising segment is set as the continuous environmental hazard value, and the continuous environmental hazard value is discriminated and processed to generate a descending signal and a feedback instruction.

7. A ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 6, characterized in that: When a feedback instruction is generated, the obstructed ventilation number of the corresponding high-risk area is retrieved, and the sum of the continuous environmental hazard value and the corresponding value of the obstructed ventilation number is multiplied by the preset error correction factor a1 and set as the hazard diffusion assessment coefficient. If a1 is greater than zero, the hazard diffusion assessment coefficient is compared and analyzed with the preset hazard diffusion assessment coefficient threshold value entered and stored internally to obtain a high-risk signal and a diffusion signal.

8. The ventilation control system for a processing workshop for resource utilization of lithium iron phosphate batteries according to claim 1, characterized in that: The workshop management demand division analysis process of the workshop control unit is as follows: Obtain the ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas, and set the ratio between the number of high-risk areas corresponding to high-risk signals and the total number of sub-areas as the workshop management demand ratio, compare and analyze the workshop management demand ratio with the internally entered and stored presets E1 and E2, E1<E2, and obtain the first-level demand, second-level demand and third-level demand, and set the first-level demand, second-level demand and third-level demand as the control demand level KS, KS=1, 2, 3.

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