A Lithium Battery Crushing Protection Method, Device, Electronic Device and Storage Medium

Abstract

This application belongs to the field of lithium battery recycling. Specifically, a lithium battery crushing protection method, device, electronic device, and storage medium are disclosed. The lithium battery crushing protection method obtains relevant information of the lithium battery to be crushed, and the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed. It determines whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive. If so, it adjusts the nitrogen input amount according to the quantity information, size information, model information, and brand information. If not, it adjusts the nitrogen input amount according to the quantity information and size information, which not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the nitrogen usage cost.

Description

Technical Field

[0001] The present application relates to the field of lithium battery recycling. Specifically, it relates to a lithium battery crushing protection method, device, electronic device, and storage medium. Background Art

[0002] During the recycling process of lithium batteries, a crushing process is required. And during the crushing process, nitrogen needs to be filled to prevent the lithium batteries from catching fire or exploding during the pulverization process. In the prior art, generally, a certain amount of nitrogen is filled according to the volume of the crushing chamber (i.e., the chamber of the crushing device for crushing lithium batteries). In practice, from a safety perspective, to ensure safety, an excessive amount of nitrogen is often filled to make the nitrogen concentration in the crushing chamber reach a relatively high value (such as above 95%). Thus, regardless of the number and quality of the lithium batteries to be crushed, the safety of the pulverization process can be ensured. Although this can ensure safety, filling too much nitrogen will cause waste and increase the cost of nitrogen use.

[0003] In response to the above problems, there is currently no effective technical solution. Summary of the Invention

[0004] The purpose of the present application is to provide a lithium battery crushing protection method, device, electronic device, and storage medium, which not only ensure the safety of the crushing work but also avoid waste caused by excessive nitrogen filling, thus helping to reduce the cost of nitrogen use.

[0005] In a first aspect, the present application provides a lithium battery crushing protection method, which is applied to a lithium battery crushing system and includes the steps of:

[0006] A1. Obtain relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed;

[0007] A2. Determine whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive based on the relevant information;

[0008] A3. If so, adjust the amount of nitrogen introduced according to the quantity information, size information, model information, and brand information; if not, adjust the amount of nitrogen introduced according to the quantity information and size information.

[0009] The present application determines whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive. If so, it adjusts the amount of nitrogen introduced according to the quantity information, size information, model information, and brand information; if not, it adjusts the amount of nitrogen introduced according to the quantity information and size information. This not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the cost of nitrogen use.

[0010] Preferably, the step of adjusting the nitrogen input amount according to the quantity information, the size information, the model information, and the brand information includes:

[0011] Obtaining the minimum safe concentration of nitrogen required for each second lithium battery during crushing according to the model information and the brand information of each second lithium battery;

[0012] Extracting the maximum value among the minimum safe concentrations of each second lithium battery, denoted as the first concentration;

[0013] Adjusting the nitrogen input amount according to the first concentration.

[0014] In this application, by extracting the maximum value among the minimum safe concentrations of each second lithium battery, that is, on the premise of ensuring safety, the probability of charging excessive nitrogen is reduced. The actual nitrogen input amount is adjusted by the first concentration, and there is no need to charge too much nitrogen, which is beneficial to reducing the nitrogen usage cost.

[0015] Preferably, the step of adjusting the nitrogen input amount according to the first concentration includes:

[0016] Calculating the total volume of the lithium batteries to be crushed according to the quantity information and the size information of the lithium batteries to be crushed;

[0017] Calculating the gas volume in the crushing chamber according to the total volume and the crushing chamber volume;

[0018] Calculating the input amount according to the gas volume and the first concentration.

[0019] Preferably, the step of adjusting the nitrogen input amount according to the quantity information and the size information includes:

[0020] Calculating the total volume of the lithium batteries to be crushed according to the quantity information and the size information;

[0021] Calculating the gas volume in the crushing chamber according to the total volume and the crushing chamber volume;

[0022] Calculating the input amount according to the gas volume and the preset safe concentration.

[0023] Preferably, the step of adjusting the nitrogen input amount according to the quantity information and the size information includes:

[0024] Calculating the total volume of the lithium batteries to be crushed according to the quantity information and the size information;

[0025] Calculating the proportion of the total volume in the crushing chamber volume;

[0026] Obtain the corresponding safety concentration reference value according to the proportion;

[0027] Calculate the gas volume in the crushing chamber according to the total volume and the volume of the crushing chamber;

[0028] Calculate the input amount according to the gas volume and the safety concentration reference value.

[0029] By calculating the proportion of the total volume of the lithium battery to be crushed in the volume of the crushing chamber, the input amount of nitrogen can be adjusted in real time according to the specific situation of the proportion, without excessive nitrogen input, which is beneficial to reducing the use cost of nitrogen. Moreover, the corresponding safety concentration reference value is obtained according to the proportion, so that the input amount of nitrogen can ensure the safety of the crushing work.

[0030] Preferably, after step A3, the following steps are further included:

[0031] A4. Obtain the usage information of the lithium battery crushing system to calculate the adjustment coefficient, where the usage information includes at least one of the service life, continuous working duration, and the time interval since the last combustion / explosion;

[0032] A5. Correct the input amount according to the adjustment coefficient.

[0033] Preferably, after step A1 and before step A2, the following steps are further included:

[0034] A6. If there is a lithium battery to be crushed with the model information acquisition failed and the brand information acquisition successful, set the model information of the corresponding lithium battery to be crushed as the model information of the most dangerous lithium battery of the corresponding brand;

[0035] A7. If there is a lithium battery to be crushed with both the model information and the brand information acquisition failed, set the model information and the brand information of the corresponding lithium battery to be crushed according to the model information and the brand information of the most dangerous lithium battery identified in this crushing work and / or historical crushing works.

[0036] In a second aspect, the present application provides a lithium battery crushing protection device, including:

[0037] An acquisition module, configured to acquire relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed;

[0038] A judgment module, configured to judge whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information;

[0039] An adjustment module, configured to, if so, adjust the nitrogen intake according to the quantity information, the size information, the model information, and the brand information; if not, adjust the nitrogen intake according to the quantity information and the size information.

[0040] In a third aspect, the present application provides an electronic device, including a processor and a memory. The memory stores a computer program executable by the processor. When the processor executes the computer program, it runs the steps in the lithium battery crushing protection method described above.

[0041] In a fourth aspect, the present application provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, it runs the steps in the lithium battery crushing protection method described above.

[0042] Beneficial effects:

[0043] The lithium battery crushing protection method, device, electronic device, and storage medium provided by the present application obtain relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed; determine whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information; if so, adjust the nitrogen intake according to the quantity information, the size information, the model information, and the brand information; if not, adjust the nitrogen intake according to the quantity information and the size information, which not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the nitrogen usage cost. Description of the Drawings

[0044] Figure 1 It is a flowchart of the lithium battery crushing protection method provided by the present application.

[0045] Figure 2 It is a schematic structural diagram of the lithium battery crushing protection device provided by the present application.

[0046] Figure 3 It is a schematic structural diagram of the electronic device provided by the present application.

[0047] Reference numerals: 1, acquisition module; 2, judgment module; 3, adjustment module; 301, processor; 302, memory; 303, communication bus. Detailed Embodiments

[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0049] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0050] Please refer to Figure 1 , Figure 1 which is a flowchart of the lithium battery crushing protection method provided by the present application. The present application provides a lithium battery crushing protection method, which is applied to a lithium battery crushing system and includes the steps:

[0051] A1. Obtain relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed;

[0052] A2. Determine whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information;

[0053] A3. If so, adjust the nitrogen input amount according to the quantity information, size information, model information, and brand information; if not, adjust the nitrogen input amount according to the quantity information and size information.

[0054] Specifically, by determining whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive, if so, adjust the nitrogen input amount according to the quantity information, size information, model information, and brand information; if not, adjust the nitrogen input amount according to the quantity information and size information; this not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the nitrogen usage cost.

[0055] Among them, relevant information of the lithium batteries to be crushed can be obtained through image recognition. For example, before the lithium batteries to be crushed are sent into the crushing chamber, pictures of each lithium battery to be crushed can be collected by a visual recognition device, and the model information and brand information of each lithium battery to be crushed can be recognized by using the template matching method according to the picture. Then, according to the model information and brand information of each lithium battery to be crushed, the quantity information of various lithium batteries to be crushed (the lithium batteries to be crushed with the same model information and brand information are the same kind of lithium battery to be crushed) is counted, and the corresponding size information is obtained according to the model information and brand information of various lithium batteries to be crushed (the sizes of lithium batteries with different models and brands can be pre-recorded in the local database, and the corresponding size information can be queried through the model information and brand information).

[0056] Among them, the lithium batteries that are flammable and explosive can be determined in advance according to the number or frequency of combustion and explosion of various lithium batteries in each historical crushing operation, or the lithium batteries that are flammable and explosive can be determined in advance through big data statistics, so as to form a query table of flammable and explosive lithium batteries recording the model information and brand information of various flammable and explosive lithium batteries; in step A2, the model information and brand information of the current various lithium batteries to be crushed can be compared with this query table of flammable and explosive lithium batteries to determine whether various lithium batteries to be crushed belong to flammable and explosive lithium batteries, and the lithium batteries to be crushed belonging to flammable and explosive lithium batteries are recorded as the second lithium batteries.

[0057] In some embodiments, the step of adjusting the nitrogen input amount according to the quantity information, size information, model information and brand information includes:

[0058] Obtain the lowest safe concentration of nitrogen required for the second lithium batteries in crushing according to the model information and brand information of each second lithium battery;

[0059] Extract the maximum value among the lowest safe concentrations of each second lithium battery, and record it as the first concentration;

[0060] Adjust the nitrogen input amount according to the first concentration.

[0061] Specifically, by extracting the maximum value among the lowest safe concentrations of each second lithium battery, that is, on the premise of ensuring safety, the probability of charging excessive nitrogen is reduced, and the actual nitrogen input amount is adjusted by the first concentration, without charging too much nitrogen, which is beneficial to reducing the nitrogen usage cost.

[0062] Among them, the lowest safety concentration is the lowest concentration of nitrogen required to ensure that the probability of combustion or explosion of flammable and explosive lithium batteries during the crushing operation is lower than a preset probability threshold (which can be set according to actual needs, such as 0.2%, but not limited to this). The lowest safety concentration of each flammable and explosive lithium battery can be obtained through experiments in advance and recorded in the local database. The corresponding lowest safety concentration can be queried through the model information and brand information of the second lithium battery.

[0063] In some embodiments, the step of adjusting the introduction amount of nitrogen according to the first concentration includes:

[0064] Calculating the total volume of the lithium batteries to be crushed according to the quantity information and size information of the lithium batteries to be crushed;

[0065] Calculating the gas volume in the crushing chamber according to the total volume and the volume of the crushing chamber;

[0066] Calculating the introduction amount according to the gas volume and the first concentration.

[0067] Among them, the volume of the crushing chamber can be measured in advance.

[0068] Specifically, the total volume of the lithium batteries to be crushed can be calculated according to the quantity information and size information (multiplying the quantity information of various lithium batteries to be crushed by the corresponding size information to obtain the single-category total volume of various lithium batteries to be crushed, and then calculating the sum of each single-category total volume to obtain the total volume of the lithium batteries to be crushed). Then, the gas volume in the crushing chamber is calculated according to the total volume and the volume of the crushing chamber. For example, the difference between the volume of the crushing chamber and the total volume is used as the gas volume in the crushing chamber, or the difference between the volume of the crushing chamber and the total volume of the lithium batteries to be crushed is multiplied by a safety factor greater than 1 to obtain the gas volume. The safety factor can be set according to actual needs; according to the size of the gas volume, the introduction amount of nitrogen is adjusted in real time, without introducing too much nitrogen, which is beneficial to reducing the use cost of nitrogen. The introduction amount of nitrogen can be: multiplying the gas volume by the first concentration as the introduction amount.

[0069] In some embodiments, the step of adjusting the introduction amount of nitrogen according to the quantity information and size information includes:

[0070] Calculating the total volume of the lithium batteries to be crushed according to the quantity information and size information (the calculation method refers to the previous text);

[0071] Calculating the gas volume in the crushing chamber according to the total volume and the volume of the crushing chamber (the calculation method refers to the previous text);

[0072] Calculating the introduction amount according to the gas volume and the preset safety concentration.

[0073] That is, when the lithium batteries to be crushed do not contain flammable and explosive lithium batteries, there is no need to care about the models and brands of the lithium batteries to be crushed, and only nitrogen is input according to the preset safe concentration to avoid excessive nitrogen passing through. Among them, the preset safe concentration can be the maximum or average value of the minimum concentration of nitrogen required for various non-flammable and explosive lithium batteries to have a probability of combustion or explosion lower than the preset probability threshold (which can be set according to actual needs, such as 0.2%, but not limited to this) during the crushing operation. The preset safe concentration can be obtained through experimental statistics in advance.

[0074] Specifically, the input amount is calculated based on the gas volume obtained through calculation and the preset safe concentration (the input amount is obtained by multiplying the gas volume by the preset safe concentration), so that the input amount of nitrogen can ensure the safety of the crushing operation without the need to input excessive nitrogen, thereby helping to reduce the usage cost of nitrogen.

[0075] In some embodiments, the step of adjusting the input amount of nitrogen according to the quantity information and size information includes:

[0076] Calculate the total volume of the lithium batteries to be crushed based on the quantity information and size information (the calculation method refers to the previous text);

[0077] Calculate the proportion of the total volume in the volume of the crushing chamber;

[0078] Obtain the corresponding safe concentration reference value according to the proportion;

[0079] Calculate the gas volume in the crushing chamber based on the total volume and the volume of the crushing chamber (the calculation method refers to the previous text);

[0080] Calculate the input amount based on the gas volume and the safe concentration reference value.

[0081] Among them, the safe concentration reference value can be set according to actual needs.

[0082] That is, when the lithium batteries to be crushed do not contain flammable and explosive lithium batteries, there is no need to care about the models and brands of the lithium batteries to be crushed, and only nitrogen is input according to the safe concentration reference value to avoid excessive nitrogen input. Among them, the safe concentration reference values of non-flammable and explosive lithium batteries under different proportions (referring to the proportion of the total volume in the volume of the crushing chamber) can be obtained through experiments in advance (the minimum concentration of nitrogen required for non-flammable and explosive lithium batteries to have a probability of combustion or explosion lower than the preset probability threshold) to form a safe concentration reference value query table, or a change curve of the safe concentration reference value changing with the proportion is fitted; in actual operation, the corresponding safe concentration reference value is queried from the safe concentration reference value query table according to this proportion, or the corresponding safe concentration reference value is extracted from the change curve according to this proportion.

[0083] Among them, the available gas volume is multiplied by the reference value of the safe concentration to obtain the input amount.

[0084] Specifically, by calculating the proportion of the total volume of the lithium battery to be crushed in the volume of the crushing chamber, the input amount of nitrogen can be adjusted in real time according to the specific situation of the proportion, without the need to input too much nitrogen, which is beneficial to reducing the use cost of nitrogen. Moreover, by obtaining the corresponding reference value of the safe concentration according to the proportion, the input amount of nitrogen can ensure the safety of the crushing work.

[0085] In some embodiments, after step A3, the following steps are further included:

[0086] A4. Obtain the usage information of the lithium battery crushing system to calculate the adjustment coefficient, where the usage information includes at least one of the service life, continuous working duration, and the time interval since the last combustion / explosion.

[0087] A5. Correct the input amount according to the adjustment coefficient.

[0088] In fact, as the service life of the lithium battery crushing system increases and the continuous working duration increases, the system safety performance will decline to some extent; in addition, the time interval since the last combustion / explosion reflects the actual safety performance of the lithium battery crushing system to a certain extent; therefore, in order to further improve the safety of the crushing work, the calculated input amount can be corrected according to this usage information (the adjusted input amount is obtained by multiplying the adjustment coefficient by the input amount).

[0089] In some embodiments, the usage information includes multiple items among the service life, continuous working duration, and the time interval since the last combustion / explosion.

[0090] Step A4 includes:

[0091] Obtain the corresponding influence coefficients according to each item of usage information;

[0092] Calculate the adjustment coefficient according to the influence coefficients corresponding to each item of usage information.

[0093] Specifically, for example, the calculation formula for the first influence coefficient based on the service life can be preset according to actual needs (for example, a1 = q1*n + q2, where a1 is the first influence coefficient, n is the service life, and q1 and q2 are preset conversion coefficients, but not limited to this), the calculation formula for the second influence coefficient based on the continuous working duration (for example, a2 = p1*t + p2, where a2 is the second influence coefficient, t is the continuous working duration, and p1, p2 are preset conversion coefficients, but not limited to this), and the calculation formula for the third influence coefficient based on the time interval since the last combustion / explosion (for example, a3 = r / T, where a3 is the third influence coefficient, T is the time interval since the last combustion / explosion, and r is a preset proportionality coefficient, but not limited to this). Thus, the corresponding influence coefficients are calculated based on the usage information and the corresponding influence coefficient calculation formulas.

[0094] For another example, corresponding first influence coefficients can be allocated in advance according to different service life ranges to form a first influence coefficient query table, corresponding second influence coefficients can be allocated according to different continuous working duration ranges to form a second influence coefficient query table, and corresponding third influence coefficients can be allocated according to different time intervals (i.e., the time interval since the last combustion / explosion) ranges to form a third influence coefficient query table. Thus, the corresponding influence coefficients are queried from the corresponding influence coefficient query tables based on the usage information.

[0095] Among them, the weighted average or product of the influence coefficients corresponding to the usage information can be calculated as the adjustment coefficient.

[0096] In some embodiments, the usage information includes one of the service life, the continuous working duration, and the time interval since the last combustion / explosion;

[0097] Step A4 includes:

[0098] Obtain the corresponding influence coefficient according to the usage information as the adjustment coefficient.

[0099] Among them, the process of obtaining the influence coefficient refers to the foregoing text.

[0100] Specifically, if the usage information only includes the service life, obtain the corresponding first influence coefficient according to the service life and set the corresponding first influence coefficient as the adjustment coefficient.

[0101] If the usage information only includes the continuous working duration, obtain the corresponding second influence coefficient according to the continuous working duration and set the corresponding second influence coefficient as the adjustment coefficient.

[0102] If the usage information only includes the time interval since the last combustion / explosion, obtain the corresponding third influence coefficient according to the time interval since the last combustion / explosion and set the corresponding third influence coefficient as the adjustment coefficient.

[0103] In some embodiments, after step A1 and before step A2, the following steps are further included:

[0104] A6. If there are lithium batteries to be crushed with failed model information acquisition but successful brand information acquisition, set the model information of the corresponding lithium batteries to be crushed as the model information of the most dangerous lithium battery of the corresponding brand.

[0105] A7. If there are lithium batteries to be crushed with both model information and brand information acquisition failed, set the model information and brand information of the corresponding lithium batteries to be crushed according to the model information and brand information of the most dangerous lithium battery identified in this crushing operation and / or each historical crushing operation.

[0106] Among them, when obtaining the relevant information of the lithium batteries to be crushed, the identification of the model information and / or brand information may fail due to deformation of the lithium batteries to be crushed, label damage or other reasons. When the identification of relevant information fails, the lithium batteries to be crushed are determined as high-risk lithium batteries. Although it is relatively conservative, it can effectively ensure the safety of the crushing process. Among them, after setting the model information and brand information of the lithium batteries to be crushed with failed identification, obtain the corresponding size information and quantity information according to the set model information and brand information.

[0107] Among them, a danger coefficient can be assigned to various lithium batteries in advance according to the big data of the number or frequency of combustion or explosion of various lithium batteries. The larger the danger coefficient, the more dangerous the lithium battery. The most dangerous lithium battery of a brand refers to the lithium battery with the largest danger coefficient among the lithium batteries of various models of the corresponding brand.

[0108] Specifically, if there are lithium batteries to be crushed with both model information and brand information acquisition failed, the model information and brand information of the corresponding lithium batteries to be crushed can be set according to the following three situations. The first situation: According to the model information and brand information of the most dangerous lithium battery identified in this crushing operation, set the model information and brand information of this most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be crushed. The second situation: According to the model information and brand information of the most dangerous lithium battery identified in each historical crushing operation, set the model information and brand information of this most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be crushed. The third situation: According to the model information and brand information of the most dangerous lithium battery identified in this crushing operation and each historical crushing operation, set the model information and brand information of this most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be crushed, so as to ensure safety and avoid waste caused by excessive nitrogen filling, which is beneficial to reducing the use cost of nitrogen.

[0109] As can be seen from the above, the lithium battery crushing protection method provided by this application obtains relevant information of the lithium battery to be crushed. The relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed. It determines whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive. If so, it adjusts the nitrogen input volume according to the quantity information, size information, model information, and brand information. If not, it adjusts the nitrogen input volume according to the quantity information and size information, which not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the nitrogen usage cost.

[0110] Please refer to Figure 2 , this application provides a lithium battery crushing protection device, including:

[0111] An acquisition module 1, configured to acquire relevant information of the lithium battery to be crushed. The relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed;

[0112] A judgment module 2, configured to determine whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information;

[0113] An adjustment module 3, configured to, if so, adjust the nitrogen input volume according to the quantity information, size information, model information, and brand information; if not, adjust the nitrogen input volume according to the quantity information and size information.

[0114] Specifically, by determining whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive, if so, adjust the nitrogen input volume according to the quantity information, size information, model information, and brand information; if not, adjust the nitrogen input volume according to the quantity information and size information. This not only ensures the safety of the crushing work but also avoids waste caused by excessive nitrogen filling, thus helping to reduce the nitrogen usage cost.

[0115] Among them, the relevant information of the lithium battery to be crushed can be obtained by means of image recognition. For example, before the lithium battery to be crushed is sent into the crushing chamber, pictures of each lithium battery to be crushed can be collected by a visual recognition device, and the model information and brand information of each lithium battery to be crushed can be identified by using the template matching method based on the picture. Then, the quantity information of various lithium batteries to be crushed (lithium batteries with the same model information and brand information are the same kind of lithium battery to be crushed) can be counted according to the model information and brand information of each lithium battery to be crushed, and the corresponding size information can be obtained according to the model information and brand information of various lithium batteries to be crushed (the sizes of lithium batteries with different models and brands can be pre-recorded in the local database, and the corresponding size information can be queried through the model information and brand information).

[0116] Among them, the flammable and explosive lithium batteries can be determined in advance according to the number or frequency of combustion and explosion occurrences of various lithium batteries in previous crushing operations, or the flammable and explosive lithium batteries can be determined in advance through big data statistics, so as to form a query table of flammable and explosive lithium batteries recording the model information and brand information of various flammable and explosive lithium batteries; when the judgment module 2 judges whether the lithium battery to be crushed contains the second flammable and explosive lithium battery according to relevant information, it specifically executes that the model information and brand information of the current lithium batteries to be crushed can be compared with this query table of flammable and explosive lithium batteries to judge whether the lithium batteries to be crushed belong to flammable and explosive lithium batteries, and the lithium batteries to be crushed belonging to flammable and explosive lithium batteries are recorded as the second lithium batteries.

[0117] In some embodiments, when the adjustment module 3 adjusts the nitrogen input amount according to the quantity information, size information, model information and brand information, it specifically executes:

[0118] Obtain the minimum safe concentration of nitrogen required for the corresponding second lithium battery during crushing according to the model information and brand information of each second lithium battery;

[0119] Extract the maximum value from the minimum safe concentrations of each second lithium battery and record it as the first concentration;

[0120] Adjust the nitrogen input amount according to the first concentration.

[0121] Specifically, by extracting the maximum value from the minimum safe concentrations of each second lithium battery, that is, on the premise of ensuring safety, reducing the probability of excessive nitrogen filling, and adjusting the actual nitrogen input amount by the first concentration, there is no need to fill in too much nitrogen, which is beneficial to reducing the nitrogen usage cost.

[0122] Among them, the minimum safe concentration is the minimum concentration of nitrogen required to ensure that the probability of combustion or explosion of flammable and explosive lithium batteries during crushing work is lower than a preset probability threshold (which can be set according to actual needs, for example, 0.2%, but not limited to this). The minimum safe concentration of each flammable and explosive lithium battery can be obtained in advance through experiments and recorded in the local database, and the corresponding minimum safe concentration can be queried through the model information and brand information of the second lithium battery.

[0123] In some embodiments, when the adjustment module 3 adjusts the nitrogen input amount according to the first concentration, it specifically executes:

[0124] Calculate the total volume of the lithium batteries to be crushed according to the quantity information and size information of the lithium batteries to be crushed;

[0125] Calculate the gas volume in the crushing chamber according to the total volume and the volume of the crushing chamber;

[0126] Calculate the input amount according to the gas volume and the first concentration.

[0127] Among them, the volume of the crushing chamber can be measured in advance.

[0128] Specifically, the total volume of the lithium batteries to be crushed can be calculated based on the quantity information and size information (multiplying the quantity information of various lithium batteries to be crushed by the corresponding size information to obtain the total volume of each type of lithium battery to be crushed, and then calculating the sum of the total volumes of each type to obtain the total volume of the lithium batteries to be crushed). Then, the gas volume in the crushing chamber can be calculated based on the total volume and the volume of the crushing chamber. For example, the difference between the volume of the crushing chamber and the total volume can be used as the gas volume in the crushing chamber, or the difference between the volume of the crushing chamber and the total volume of the lithium batteries to be crushed can be multiplied by a safety factor greater than 1 to obtain the gas volume, and the safety factor can be set according to actual needs; according to the size of the gas volume, the nitrogen input amount can be adjusted in real time, without excessive nitrogen input, which is conducive to reducing the use cost of nitrogen. The nitrogen input amount can be: multiplying the gas volume by the first concentration as the input amount.

[0129] In some embodiments, when the adjustment module 3 adjusts the nitrogen input amount according to the quantity information and size information, it specifically executes:

[0130] Calculate the total volume of the lithium batteries to be crushed based on the quantity information and size information (the calculation method refers to the previous text);

[0131] Calculate the gas volume in the crushing chamber based on the total volume and the volume of the crushing chamber (the calculation method refers to the previous text);

[0132] Calculate the input amount according to the gas volume and the preset safety concentration.

[0133] That is, when the lithium batteries to be crushed do not contain flammable and explosive lithium batteries, there is no need to care about the models and brands of the lithium batteries to be crushed, and only nitrogen is input according to the preset safety concentration to avoid excessive nitrogen passing through. Among them, the preset safety concentration can be the maximum or average value of the minimum concentration of nitrogen required when the probability of combustion or explosion of various non-flammable and explosive lithium batteries during the crushing operation is lower than the preset probability threshold (which can be set according to actual needs, such as 0.2%, but not limited to this), and the preset safety concentration can be obtained in advance through experimental statistics.

[0134] Specifically, the input amount is calculated based on the calculated gas volume and the preset safety concentration (multiplying the gas volume by the preset safety concentration to obtain the input amount), so that the nitrogen input amount can ensure the safety of the crushing operation and does not require excessive nitrogen input, which is conducive to reducing the use cost of nitrogen.

[0135] In some embodiments, when the adjustment module 3 adjusts the nitrogen input amount according to the quantity information and size information, it specifically executes:

[0136] Calculate the total volume of the lithium batteries to be crushed based on the quantity information and size information (the calculation method refers to the previous text);

[0137] Calculate the proportion of the total volume in the volume of the crushing chamber;

[0138] Obtain the corresponding safety concentration reference value according to the proportion;

[0139] Calculate the gas volume in the crushing chamber based on the total volume and the volume of the crushing chamber (the calculation method refers to the previous text);

[0140] Calculate the input amount according to the gas volume and the safety concentration reference value.

[0141] Among them, the safety concentration reference value can be set according to actual needs.

[0142] That is, when the lithium batteries to be crushed do not contain flammable and explosive lithium batteries, there is no need to care about the models and brands of the lithium batteries to be crushed. Just input nitrogen according to the safety concentration reference value to avoid excessive nitrogen input. Among them, the safety concentration reference values of non-flammable and explosive lithium batteries under different proportions (referring to the proportion of the total volume in the volume of the crushing chamber) can be obtained in advance through experiments (the minimum concentration of nitrogen required to make the probability of combustion or explosion of non-flammable and explosive lithium batteries during the crushing operation lower than the preset probability threshold), so as to form a safety concentration reference value query table, or fit to obtain the change curve of the safety concentration reference value with the change of the proportion; in actual work, query the corresponding safety concentration reference value in the safety concentration reference value query table according to this proportion, or extract the corresponding safety concentration reference value from the change curve according to this proportion.

[0143] Among them, the available gas volume can be multiplied by the safety concentration reference value to obtain the input amount.

[0144] Specifically, by calculating the proportion of the total volume of the lithium batteries to be crushed in the volume of the crushing chamber, the input amount of nitrogen can be adjusted in real time according to the specific situation of the proportion, without excessive nitrogen input, which is beneficial to reducing the use cost of nitrogen. Moreover, the corresponding safety concentration reference value is obtained according to the proportion, so that the input amount of nitrogen can ensure the safety of the crushing operation.

[0145] In some embodiments, the lithium battery crushing protection device further includes:

[0146] A first calculation module, configured to obtain the usage information of the lithium battery crushing system to calculate an adjustment coefficient, where the usage information includes at least one of the service life, the continuous working duration, and the time interval since the last combustion / explosion;

[0147] A correction module, configured to correct the input amount according to the adjustment coefficient.

[0148] In fact, as the service life of the lithium battery crushing system increases and the continuous working duration increases, the system safety performance will decline to some extent. Additionally, the time interval since the last combustion / explosion reflects the actual safety performance of the lithium battery crushing system to a certain degree. Therefore, in order to further improve the safety of the crushing operation, the calculated input amount can be corrected based on this usage information (the corrected input amount is obtained by multiplying the adjustment coefficient and the input amount).

[0149] In some embodiments, the usage information includes multiple items among the service life, the continuous working duration, and the time interval since the last combustion / explosion.

[0150] When the first calculation module obtains the usage information of the lithium battery crushing system to calculate the adjustment coefficient, and the usage information includes at least one of the service life, the continuous working duration, and the time interval since the last combustion / explosion, it specifically performs as follows:

[0151] Obtain the corresponding influence coefficients according to each item of usage information;

[0152] Calculate the adjustment coefficient according to the influence coefficients corresponding to each item of usage information.

[0153] Specifically, for example, the calculation formula for obtaining the first influence coefficient based on the service life can be preset according to actual needs (for example, a1 = q1 * n + q2, where a1 is the first influence coefficient, n is the service life, and q1 and q2 are preset conversion coefficients, but not limited to this), the calculation formula for obtaining the second influence coefficient based on the continuous working duration (for example, a2 = p1 * t + p2, where a2 is the second influence coefficient, t is the continuous working duration, and p1, p2 are preset conversion coefficients, but not limited to this), and the calculation formula for obtaining the third influence coefficient based on the time interval since the last combustion / explosion (for example, a3 = r / T, where a3 is the third influence coefficient, T is the time interval since the last combustion / explosion, and r is a preset proportionality coefficient, but not limited to this). Thus, the corresponding influence coefficients are calculated according to each item of usage information and the corresponding influence coefficient calculation formulas.

[0154] Also, for example, the corresponding first influence coefficients can be allocated according to different service life ranges in advance to form a first influence coefficient query table, the corresponding second influence coefficients can be allocated according to different continuous working duration ranges to form a second influence coefficient query table, and the corresponding third influence coefficients can be allocated according to different time interval (i.e., the time interval since the last combustion / explosion) ranges to form a third influence coefficient query table. Thus, the corresponding influence coefficients are queried from the corresponding influence coefficient query tables according to each item of usage information.

[0155] Among them, the weighted average or product of the influence coefficients corresponding to each item of usage information can be calculated as the adjustment coefficient.

[0156] In some embodiments, the usage information includes one of the service life, the continuous working duration, and the time elapsed since the last combustion / explosion.

[0157] When the first calculation module obtains the usage information of the lithium battery crushing system to calculate the adjustment coefficient, and the usage information includes at least one of the service life, the continuous working duration, and the time elapsed since the last combustion / explosion, it specifically performs:

[0158] Obtain the corresponding influence coefficient according to the usage information as the adjustment coefficient.

[0159] Among them, the process of obtaining the influence coefficient refers to the foregoing text.

[0160] Specifically, if the usage information only includes the service life, obtain the corresponding first influence coefficient according to the service life, and set the corresponding first influence coefficient as the adjustment coefficient.

[0161] If the usage information only includes the continuous working duration, obtain the corresponding second influence coefficient according to the continuous working duration, and set the corresponding second influence coefficient as the adjustment coefficient.

[0162] If the usage information only includes the time elapsed since the last combustion / explosion, obtain the corresponding third influence coefficient according to the time elapsed since the last combustion / explosion, and set the corresponding third influence coefficient as the adjustment coefficient.

[0163] In some embodiments, the lithium battery crushing protection device further includes:

[0164] A first setting module, configured to, if there is a lithium battery to be crushed with the model information acquisition failed and the brand information acquisition successful, set the model information of the corresponding lithium battery to be crushed as the model information of the most dangerous lithium battery of the corresponding brand;

[0165] A second setting module, configured to, if there is a lithium battery to be crushed with both the model information and the brand information acquisition failed, set the model information and the brand information of the corresponding lithium battery to be crushed according to the model information and the brand information of the most dangerous lithium battery identified in this crushing work and / or each historical crushing work.

[0166] Among them, when obtaining the relevant information of the lithium battery to be crushed, the model information and / or the brand information may fail to be identified due to deformation, label pollution or other reasons of the lithium battery to be crushed. When there is a failure to identify the relevant information, the lithium battery to be crushed is determined as a high-risk lithium battery. Although it is relatively conservative, it can effectively ensure the safety of the crushing process. Among them, after setting the model information and the brand information of the lithium battery to be crushed with the identification failed, obtain the corresponding size information and quantity information according to the set model information and brand information.

[0167] Among them, a danger coefficient can be assigned to various lithium batteries in advance according to the big data of the number or frequency of combustion or explosion of various lithium batteries. The larger the danger coefficient, the more dangerous the lithium battery. The most dangerous lithium battery of a brand refers to the lithium battery with the largest danger coefficient among the lithium batteries of various models of the corresponding brand.

[0168] Specifically, if there are lithium batteries to be broken for which both the model information and the brand information cannot be obtained; then the model information and brand information of the corresponding lithium batteries to be broken can be set according to the following three situations. The first situation: According to the model information and brand information of the most dangerous lithium battery identified in the current breaking work, set the model information and brand information of the most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be broken; The second situation: According to the model information and brand information of the most dangerous lithium battery identified in each previous breaking work, set the model information and brand information of the most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be broken; The third situation: According to the model information and brand information of the most dangerous lithium battery identified in the current breaking work and each previous breaking work, set the model information and brand information of the most dangerous lithium battery as the model information and brand information of the corresponding lithium batteries to be broken, so as to ensure safety and avoid waste caused by excessive nitrogen filling, which is beneficial to reducing the use cost of nitrogen.

[0169] As can be seen from the above, the lithium battery breaking protection device provided by the present application obtains relevant information of the lithium battery to be broken, and the relevant information includes the quantity information, size information, model information and brand information of the lithium battery to be broken; determines whether the lithium battery to be broken contains the second lithium battery that is flammable and explosive according to the relevant information; if so, adjusts the nitrogen input amount according to the quantity information, size information, model information and brand information; if not, adjusts the nitrogen input amount according to the quantity information and size information, which not only ensures the safety of the breaking work, but also avoids waste caused by excessive nitrogen filling, thus being beneficial to reducing the nitrogen use cost.

[0170] Please refer to Figure 3 , Figure 3A schematic structural diagram of an electronic device provided by an embodiment of the present application. The present application provides an electronic device, including: a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanisms (not marked). The memory 302 stores a computer program executable by the processor 301. When the electronic device runs, the processor 301 executes the computer program to perform the lithium battery crushing protection method in any optional implementation manner of the above embodiment to achieve the following functions: obtaining relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed; judging whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information; if so, adjusting the nitrogen input amount according to the quantity information, size information, model information, and brand information; if not, adjusting the nitrogen input amount according to the quantity information and size information.

[0171] An embodiment of the present application provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, it performs the lithium battery crushing protection method in any optional implementation manner of the above embodiment to achieve the following functions: obtaining relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed; judging whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information; if so, adjusting the nitrogen input amount according to the quantity information, size information, model information, and brand information; if not, adjusting the nitrogen input amount according to the quantity information and size information. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (abbreviation: SRAM), electrically erasable programmable read-only memory (abbreviation: EEPROM), erasable programmable read-only memory (abbreviation: EPROM), programmable read-only memory (abbreviation: PROM), read-only memory (abbreviation: ROM), magnetic memory, flash memory, magnetic disk or optical disc.

[0172] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some communication interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0173] In addition, the units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0174] Furthermore, in each embodiment of the present application, the functional modules can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0175] In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0176] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lithium battery crushing protection method, applied to a lithium battery crushing system, characterized in that, it includes the steps of: A1. Obtain relevant information of the lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed; A2. Determine whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information; A3. If so, adjust the nitrogen input amount according to the quantity information, size information, model information, and brand information; if not, adjust the nitrogen input amount according to the quantity information and size information.

2. The lithium battery crushing protection method according to claim 1, characterized in that, the step of adjusting the nitrogen input amount according to the quantity information, size information, model information, and brand information includes: Obtain the minimum safe concentration of nitrogen required for each of the second lithium batteries during crushing according to the model information and brand information of each of the second lithium batteries; Extract the maximum value among the minimum safe concentrations of each of the second lithium batteries, denoted as the first concentration; Adjust the nitrogen input amount according to the first concentration.

3. The lithium battery crushing protection method according to claim 2, characterized in that, the step of adjusting the nitrogen input amount according to the first concentration includes: Calculate the total volume of the lithium batteries to be crushed according to the quantity information and size information of the lithium batteries to be crushed; Calculate the gas volume in the crushing chamber according to the total volume and the crushing chamber volume; Calculate the input amount according to the gas volume and the first concentration.

4. The lithium battery crushing protection method according to claim 1, characterized in that, the step of adjusting the nitrogen input amount according to the quantity information and size information includes: Calculate the total volume of the lithium batteries to be crushed according to the quantity information and size information; Calculate the gas volume in the crushing chamber according to the total volume and the crushing chamber volume; Calculate the input amount according to the gas volume and the preset safe concentration.

5. The lithium battery crushing protection method according to claim 1, characterized in that, the step of adjusting the nitrogen input amount according to the quantity information and size information includes: Calculate the total volume of the lithium batteries to be crushed according to the quantity information and size information; Calculate the proportion of the total volume in the crushing chamber volume; Obtain the corresponding safety concentration reference value according to the proportion; Calculate the gas volume in the crushing chamber according to the total volume and the crushing chamber volume; Calculate the input amount according to the gas volume and the safety concentration reference value.

6. The lithium battery crushing protection method according to claim 1, characterized in that, after step A3, it further includes the steps of: A4. Obtain the usage information of the lithium battery crushing system to calculate an adjustment coefficient, where the usage information includes at least one of the service life, continuous working duration, and the time interval since the last combustion / explosion; A5. Correct the input amount according to the adjustment coefficient.

7. The lithium battery crushing protection method according to claim 1, characterized in that, After step A1 and before step A2, the method further includes the steps of: A6. If there is a lithium battery to be crushed with the model information acquisition failed and the brand information acquisition successful, set the model information of the corresponding lithium battery to be crushed as the model information of the most dangerous lithium battery of the corresponding brand. A7. If there is a lithium battery to be crushed with both the model information and the brand information acquisition failed, set the model information and the brand information of the corresponding lithium battery to be crushed according to the model information and the brand information of the most dangerous lithium battery identified in the current crushing operation and / or each historical crushing operation.

8. A lithium battery crushing protection device is applied to a lithium battery crushing system. Characterized in that it includes: An acquisition module, configured to acquire relevant information of a lithium battery to be crushed, where the relevant information includes the quantity information, size information, model information, and brand information of the lithium battery to be crushed; A judgment module, configured to judge whether the lithium battery to be crushed contains a second lithium battery that is flammable and explosive according to the relevant information; An adjustment module, configured to, if so, adjust the nitrogen gas flow rate according to the quantity information, the size information, the model information, and the brand information; if not, adjust the nitrogen gas flow rate according to the quantity information and the size information.

9. An electronic device Characterized in that it includes a processor and a memory, the memory stores a computer program executable by the processor, and when the processor executes the computer program, it runs the steps in the lithium battery crushing protection method according to any one of claims 1-7.

10. A computer storage medium, on which a computer program is stored. Characterized in that when the computer program is executed by a processor, it runs the steps in the lithium battery crushing protection method according to any one of claims 1-7.

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