Decommissioned-traction-battery screening method and system taking carbon emission into consideration

Abstract

Provided in the present invention are a decommissioned-traction-battery screening method and system taking carbon emission into consideration. The decommissioned-traction-battery screening method comprises: in response to an input operation of a client, acquiring the carbon emission of each decommissioned traction battery within a current boundary range before decommission; acquiring state-of-health parameters of the decommissioned traction batteries by means of charging and discharging; on the basis of the carbon emission and the state-of-health parameters, classifying the decommissioned traction batteries into several categories; and on the basis of the classification result, determining a disposal mode for each decommissioned traction battery, wherein the disposal mode comprises cascade use and dismantling for recycling. In the present application, state-of-health parameters and the carbon emission of decommissioned traction batteries are taken into consideration during a screening process, and on the basis of the state-of-health parameters and the carbon emission, the batteries are classified into categories, so as to advise the disposal mode of the batteries. Thus, the overall carbon emission of the batteries in the life cycle thereof can be effectively controlled, and the production of a relatively large amount of carbon emissions during the process of cascade use or dismantling for recycling is avoided.

Description

A method and system for screening retired power batteries considering carbon emissions Technical Field

[0001] The present invention relates to the field of retired power battery screening, and in particular to a retired power battery screening method and system taking carbon emissions into consideration. Background Art

[0002] Power batteries power tools and are widely used in products such as electric vehicles, electric trains, and electric bicycles. Generally speaking, once a power battery's charge decays to 80%, it is no longer sufficient to power new energy vehicles and must be retired. Recycling a battery with only 80% remaining charge and thousands of cycles remaining would be a significant waste of resources. Currently, there are two main options for disposing of retired power batteries with less than 80% remaining capacity: second-hand recycling, where retired power batteries are used in other applications with less demanding capacity, serving as energy carriers and realizing their residual value. Second-hand recycling involves discharging and disassembling retired power batteries to extract raw materials for recycling.

[0003] Currently, the main method for screening retired power batteries on the market is to charge and discharge the batteries to obtain charge and discharge data. Based on this charge and discharge data, the battery capacity is determined to evaluate its health status, and the battery is then processed for cascade utilization or disassembly and recycling. However, this method, based solely on the battery's health status, ignores the battery's historical carbon emission data, which may lead to significant carbon emissions during the cascade utilization or recycling process. Ignoring carbon emission factors may lead to an increase in the overall carbon emissions of the battery's life cycle, making this technical solution somewhat unreasonable.

[0004] Summary of the Invention

[0005] The present invention provides a method and system for screening retired power batteries that take carbon emissions into consideration. During the screening process, the historical carbon emissions of retired power batteries are taken into consideration, and the batteries are guided for further classification and utilization based on the historical emission data, so as to solve the technical problem of how to effectively control the overall carbon emissions of the battery life cycle.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a method for screening retired power batteries taking carbon emissions into consideration, comprising:

[0007] In response to the client's input operation, the carbon emissions of each retired power battery within the current boundary range before retirement are obtained; the health status parameters of the retired power battery are obtained by charging and discharging; the current boundary range before retirement includes the raw material processing stage, battery production stage, transportation stage, and use stage;

[0008] Classifying the retired power batteries into a plurality of categories according to the carbon emissions within the pre-retirement boundary and the health status parameters of the retired power batteries;

[0009] According to the classification results, the disposal methods of each retired power battery are determined respectively; the disposal methods include cascade utilization and disassembly and recycling.

[0010] As a preferred solution, the health status parameter of the retired power battery is obtained by charging and discharging, specifically:

[0011] Discharging the retired power battery to a starting voltage; charging the discharged retired power battery to a preset voltage threshold using a constant current, and recording first time data; the first time data corresponds to the constant current charging time;

[0012] charging the retired power battery that has reached the preset voltage threshold to a preset current threshold using a constant voltage, and recording second time data; the second time data corresponds to the constant voltage charging time;

[0013] A health status parameter and a resistance determination coefficient of the retired power battery are obtained according to the constant current, the constant voltage, the first time data, and the second time data.

[0014] As a preferred solution, the retired power batteries are divided into several categories, specifically:

[0015] When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the retired power battery is determined to be unqualified;

[0016] When the carbon emissions of the retired power battery are less than the first threshold, the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, the retired power battery is determined to be of a qualified category.

[0017] As a preferred solution, the disposal method of each retired power battery is determined according to the classification results, specifically:

[0018] When the retired power battery is determined to be unqualified, the retired power battery is dismantled and recycled;

[0019] When it is determined that the retired power battery is of a qualified category, the retired power battery is recycled.

[0020] As a preferred solution, the retired power batteries are recycled in a cascade manner, specifically:

[0021] Obtaining the actual capacity of the retired power battery;

[0022] Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario and storing the batteries in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario;

[0023] Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario and storing the batteries in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario;

[0024] Retired power batteries whose actual capacity is within a third preset range of the rated capacity are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario.

[0025] Accordingly, an embodiment of the present invention provides a retired power battery screening system considering carbon emissions, including a parameter acquisition module, a category classification module and a disposal method determination module; wherein,

[0026] The parameter acquisition module is configured to respond to input operations from the client and obtain the carbon emissions of each retired power battery within a current boundary range before retirement; and obtain health status parameters of the retired power battery through charging and discharging; the current boundary range before retirement includes the raw material processing stage, battery production stage, transportation stage, and use stage;

[0027] The category classification module is configured to classify each of the retired power batteries into a plurality of categories according to the carbon emissions within the pre-retirement boundary range and the health status parameters of the retired power batteries;

[0028] The disposal method determination module is used to determine the disposal method of each retired power battery according to the classification results; the disposal methods include cascade utilization and disassembly and recycling.

[0029] As a preferred solution, the parameter acquisition module acquires the health status parameters of the retired power battery through charging and discharging, specifically:

[0030] The parameter acquisition module discharges the retired power battery to a starting voltage; charges the discharged retired power battery to a preset voltage threshold using a constant current, and records first time data; the first time data corresponds to the constant current charging time;

[0031] charging the retired power battery that has reached the preset voltage threshold to a preset current threshold using a constant voltage, and recording second time data; the second time data corresponds to the constant voltage charging time;

[0032] A health status parameter and a resistance determination coefficient of the retired power battery are obtained according to the constant current, the constant voltage, the first time data, and the second time data.

[0033] As a preferred solution, the category classification module divides the retired power batteries into several categories, specifically:

[0034] When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the classification module determines that the retired power battery is an unqualified category;

[0035] When the carbon emissions of the retired power battery are less than the first threshold, the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, the category classification module determines that the retired power battery is a qualified category.

[0036] As a preferred solution, the disposal method determination module determines the disposal method of each retired power battery according to the classification result, specifically:

[0037] When it is determined that the retired power battery is of an unqualified category, the disposal method determination module dismantles and recycles the retired power battery;

[0038] When it is determined that the retired power battery is of a qualified category, the disposal method determination module performs cascade utilization on the retired power battery.

[0039] As a preferred solution, the disposal method determination module performs cascade utilization on the retired power batteries, specifically:

[0040] The disposal method determination module obtains the actual capacity of the retired power battery;

[0041] Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario and storing the batteries in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario;

[0042] Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario and storing the batteries in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario;

[0043] Retired power batteries whose actual capacity is within a third preset range of the rated capacity are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario.

[0044] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0045] An embodiment of the present invention provides a method and system for screening retired power batteries that considers carbon emissions. The method comprises: responding to input operations from a client to obtain the carbon emissions of each retired power battery within a current boundary range before retirement; obtaining health status parameters of the retired power battery through charging and discharging; the current boundary range before retirement includes the raw material processing link, battery production link, transportation link, and use link; dividing each retired power battery into several categories based on the carbon emissions within the boundary range before retirement and the health status parameters of the retired power battery; and determining the disposal method for each retired power battery based on the classification results; the disposal methods include cascade utilization and disassembly and recycling. The embodiment of the present invention considers the health status parameters and carbon emissions of retired power batteries during the screening process, and divides each battery into categories based on the health status parameters and carbon emissions, thereby guiding its disposal method. This can achieve effective control of the overall carbon emissions of the battery life cycle and avoid large carbon emissions in the cascade utilization or disassembly and recycling processes.

[0046] Furthermore, the constant current, voltage, first time data, and second time data of the retired power battery are obtained through two charges. In this process, the time point of transition from constant current to constant voltage, that is, based on the first time data and the second time data, can describe the battery's aging or health status, or quantify it, thereby obtaining health status parameters and resistance determination coefficients that are more accurate than those of the existing technology.

[0047] Furthermore, retired power batteries are divided into unqualified and qualified categories based on carbon emissions, health status parameters and resistance determination coefficients. On this basis, the disposal method of retired power batteries is determined. This method comprehensively considers the quality of retired power batteries, achieves accurate classification and precise disposal, and is conducive to the effective recycling and cascade utilization of retired power batteries.

[0048] Furthermore, by comparing the actual capacity with the rated capacity, the application scenarios of retired power batteries are determined and stored in the corresponding battery database, fully considering the power demand of the application scenarios and maximizing the utilization of the batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a flow chart of an embodiment of a method for screening retired power batteries in consideration of carbon emissions provided by the present invention.

[0050] FIG2 is a schematic structural diagram of an embodiment of a retired power battery screening system provided by the present invention taking carbon emissions into consideration. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] Embodiment one:

[0053] According to relevant technical records, in the process of screening retired power batteries on the market, the first step is to charge and discharge the battery to obtain its charge and discharge data; then, based on the charge and discharge data, the battery capacity is determined to evaluate the battery's health status; thus, based on the battery's health status, it is determined whether the battery should be recycled or disassembled for recycling. However, this method only considers the battery's health status and ignores the battery's historical carbon emission data (such as the carbon emissions that have already been generated). This may lead to larger carbon emissions during the recycling or recycling process, resulting in an increase in the overall carbon emissions of the battery life cycle. If the current carbon emissions can be taken into account during the recycling or cascade utilization process, and then the appropriate disposal method is selected, effective control of the overall carbon emissions of the battery life cycle can be achieved.

[0054] In view of one or more of the above technical problems, please refer to FIG1 , which is a method for screening retired power batteries considering carbon emissions provided by an embodiment of the present invention, including steps S1 to S3, wherein:

[0055] Step S1, responding to the client's input operation, obtaining the carbon emissions of each retired power battery within the current boundary range before retirement; obtaining the health status parameters of the retired power battery through charging and discharging; the current boundary range before retirement includes the raw material processing link, battery production link, transportation link and use link.

[0056] In this embodiment, retired power batteries primarily refer to power batteries retired from electric vehicles, with a remaining capacity below 80% of their initial capacity, and typically still having a certain service life. For a batch of retired power batteries, a user (e.g., a technician, operator, or manager of retired power batteries) uses a user terminal (client) to input information for each retired power battery in sequence. This input can be done manually, via an external device (e.g., a mouse, keyboard, tablet, touch screen, or other interactive device), or directly by scanning the retired power battery's electronic tag to achieve the purpose of entering battery information. Furthermore, each retired power battery can be numbered 1, 2, 3, 4, 5, ... N, and data such as its capacity, carbon emissions, and health status parameters can be obtained.

[0057] Specifically, the current boundary range before retirement includes the raw material processing stage, battery production stage, battery transportation stage, and battery use stage. The current boundary range can be further subdivided. For example, the battery production stage, whose overall process is generally composed of one or more of the following stages: including but not limited to pre-factory processing, raw material transportation stage, waste treatment stage, and physical treatment stage. The more detailed the consideration of the current boundary range before retirement, the more accurate the carbon emissions obtained, which is more conducive to the precise classification of retired power batteries in the subsequent step S2.

[0058] Furthermore, as an example of this embodiment, the health status parameter of the retired power battery can be defined from the perspective of capacity, for example: SOH n =C n / C0×100%;

[0059] Among them, SOH n is the current health status parameter of the retired power battery, C n is the current battery capacity, and C0 is the rated capacity of the battery when it leaves the factory.

[0060] By charging retired power batteries, the health status parameters for the corresponding time period can be obtained based on characteristics such as the duration of constant current charging and constant voltage charging. Methods including but not limited to GRP can then be used to obtain the estimated mean and confidence interval of the health status parameters for the retired power batteries (or, using the battery charging current and time data, the ampere-hour integration method can be used to obtain the actual available capacity of the battery).

[0061] On the other hand, as another example of this embodiment, the health status parameter of the retired power battery is obtained by charging and discharging, specifically:

[0062] Discharging the retired power battery to a starting voltage; charging the discharged retired power battery to a preset voltage threshold using a constant current, and recording first time data; the first time data corresponds to the constant current charging time;

[0063] charging the retired power battery that has reached the preset voltage threshold to a preset current threshold using a constant voltage, and recording second time data; the second time data corresponds to the constant voltage charging time;

[0064] A health status parameter and a resistance determination coefficient of the retired power battery are obtained according to the constant current, the constant voltage, the first time data, and the second time data.

[0065] In this process, a model evaluation of retired power batteries can be performed using a constant current, constant voltage, and a preset calibration function processor. On this basis, the battery's aging / health status can be corrected based on its first time data and second time data to obtain a final quantitative value as the battery's health status parameter. By implementing the embodiments of the present application, the time point at which the battery transitions from constant current to constant voltage can be determined using the first time data and the second time data, or the ratio of the first time data to the second time data. The time point or the ratio is used to describe the battery's aging or health status, thereby having higher accuracy than the health status parameter defined from a capacity perspective.

[0066] Furthermore, during the charge and discharge process, the resistance determination coefficient of the retired power battery can be obtained by parameters such as the charge and discharge rate. In this embodiment, the resistance determination coefficient is mainly used to determine whether the retired power battery has obvious defects, which can be internal defects or appearance defects. As a further preferred method, the retired power battery can be charged and discharged multiple times to obtain multiple charge and discharge rates, and the multiple charge and discharge rate parameters are linearly fitted, and the fitting degree R 2 Can be used as resistance determination coefficient.

[0067] Step S2: classify the retired power batteries into several categories according to the carbon emissions within the pre-retirement boundary range and the health status parameters of the retired power batteries.

[0068] In this embodiment, the retired power batteries are divided into several categories, specifically:

[0069] When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the retired power battery is determined to be unqualified;

[0070] When the carbon emissions of the retired power battery are less than the first threshold, and the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, the retired power battery is determined to be a qualified category. In this embodiment, if any one of the three does not meet the conditions, it is determined to be unqualified, and only if all three meet the conditions can it be determined to be qualified. By comprehensively considering the carbon emissions, health status parameters and resistance determination coefficient, that is, from the perspectives of carbon emission control, health status / life or defects of the battery, retired power batteries are divided into unqualified categories and qualified categories. On this basis, the disposal method of the retired power batteries is determined to achieve accurate classification and precise disposal, which is conducive to the effective recovery and cascade utilization of retired power batteries.

[0071] Step S3: Determine the disposal method of each retired power battery according to the classification result; the disposal method includes cascade utilization and disassembly and recycling.

[0072] As a preferred embodiment, the disposal method of each retired power battery is determined according to the classification result, specifically:

[0073] When the retired power battery is determined to be unqualified, the retired power battery is dismantled and recycled;

[0074] When it is determined that the retired power battery is of a qualified category, the retired power battery is recycled.

[0075] The stepwise utilization of the retired power batteries is specifically as follows:

[0076] Obtaining the actual capacity of the retired power battery;

[0077] Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario and storing the batteries in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario;

[0078] Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario and storing the batteries in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario;

[0079] Retired power batteries with actual capacities within a third preset range of their rated capacities are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario. For example (for example only), the first preset range may be 60% to 80%, thereby matching retired power batteries with actual capacities of 60% to 80% of their rated capacities to the first scenario; the second preset range may be 40% to 60%, and the third preset range may be 10% to 40%, thereby matching retired power batteries with actual capacities of 40% to 60% of their rated capacities to the second scenario, and matching retired power batteries with actual capacities of 10% to 40% of their rated capacities to the third scenario. The remaining batteries can be disassembled for recycling or used for other processing. Storing retired power batteries in the battery database corresponding to their matching scenarios can facilitate the retrieval of battery information during subsequent cascade utilization or other processing processes, thereby achieving rapid response.

[0080] Correspondingly, referring to FIG2 , an embodiment of the present invention further provides a retired power battery screening system taking carbon emissions into consideration.

[0081] The embodiment of the present invention provides a retired power battery screening system considering carbon emissions, including a parameter acquisition module 101, a category classification module 102 and a disposal method determination module 103; wherein,

[0082] The parameter acquisition module 101 is configured to respond to input from a client and obtain the carbon emissions of each retired power battery within a current boundary range before retirement; and obtain health status parameters of the retired power battery through charging and discharging; the current boundary range before retirement includes the raw material processing stage, battery production stage, transportation stage, and usage stage;

[0083] The category classification module 102 is configured to classify each retired power battery into a plurality of categories based on the carbon emissions within the pre-retirement boundary range and the health status parameters of the retired power battery;

[0084] The disposal method determination module 103 is used to determine the disposal method of each retired power battery according to the classification result; the disposal methods include cascade utilization and disassembly and recycling.

[0085] As a preferred embodiment, the parameter acquisition module 101 acquires the health status parameters of the retired power battery through charging and discharging, specifically:

[0086] The parameter acquisition module 101 discharges the retired power battery to a starting voltage; charges the discharged retired power battery to a preset voltage threshold using a constant current, and records first time data; the first time data corresponds to the constant current charging time;

[0087] charging the retired power battery that has reached the preset voltage threshold to a preset current threshold using a constant voltage, and recording second time data; the second time data corresponds to the constant voltage charging time;

[0088] A health status parameter and a resistance determination coefficient of the retired power battery are obtained according to the constant current, the constant voltage, the first time data, and the second time data.

[0089] As a preferred embodiment, the category classification module 102 classifies the retired power batteries into several categories, specifically:

[0090] When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the classification module 102 determines that the retired power battery is an unqualified category;

[0091] When the carbon emissions of the retired power battery are less than the first threshold, the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, the category classification module 102 determines that the retired power battery is a qualified category.

[0092] As a preferred embodiment, the disposal method determination module 103 determines the disposal method of each retired power battery according to the classification result, specifically:

[0093] When it is determined that the retired power battery is of an unqualified category, the disposal method determination module 103 dismantles and recycles the retired power battery;

[0094] When it is determined that the retired power battery is of a qualified category, the disposal method determination module 103 performs cascade utilization on the retired power battery.

[0095] As a preferred embodiment, the disposal method determination module 103 performs cascade utilization on the retired power batteries, specifically:

[0096] The disposal method determination module 103 obtains the actual capacity of the retired power battery;

[0097] Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario and storing the batteries in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario;

[0098] Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario and storing the batteries in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario;

[0099] Retired power batteries whose actual capacity is within a third preset range of the rated capacity are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario.

[0100] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0101] An embodiment of the present invention provides a method and system for screening retired power batteries that considers carbon emissions. The method comprises: responding to input operations from a client to obtain the carbon emissions of each retired power battery within a current boundary range before retirement; obtaining health status parameters of the retired power battery through charging and discharging; the current boundary range before retirement includes the raw material processing link, battery production link, transportation link, and use link; dividing each retired power battery into several categories based on the carbon emissions within the boundary range before retirement and the health status parameters of the retired power battery; and determining the disposal method for each retired power battery based on the classification results; the disposal methods include cascade utilization and disassembly and recycling. The embodiment of the present invention considers the health status parameters and carbon emissions of retired power batteries during the screening process, and divides each battery into categories based on the health status parameters and carbon emissions, thereby guiding its disposal method. This can achieve effective control of the overall carbon emissions of the battery life cycle and avoid large carbon emissions in the cascade utilization or disassembly and recycling processes.

[0102] Furthermore, the constant current, voltage, first time data, and second time data of the retired power battery are obtained through two charges. In this process, the time point of transition from constant current to constant voltage, that is, based on the first time data and the second time data, can describe the battery's aging or health status, or quantify it, thereby obtaining health status parameters and resistance determination coefficients that are more accurate than those of the existing technology.

[0103] Furthermore, retired power batteries are divided into unqualified and qualified categories based on carbon emissions, health status parameters and resistance determination coefficients. On this basis, the disposal method of retired power batteries is determined. This method comprehensively considers the quality of retired power batteries, achieves accurate classification and precise disposal, and is conducive to the effective recycling and cascade utilization of retired power batteries.

[0104] Furthermore, by comparing the actual capacity with the rated capacity, the application scenarios of retired power batteries are determined and stored in the corresponding battery database, fully considering the power demand of the application scenarios and maximizing the utilization of the batteries.

[0105] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for screening retired power batteries considering carbon emissions, characterized in that: include: In response to the input operation of the client, the carbon emissions of each retired power battery within the current boundary range before retirement are obtained; the health status parameters of the retired power battery are obtained by charging and discharging; the current boundary range before retirement includes the raw material processing link, battery production link, transportation link and use link; Classifying each of the retired power batteries into a plurality of categories according to the carbon emissions within the pre-retirement boundary range and the health status parameters of the retired power batteries; According to the classification results, the disposal methods of each of the retired power batteries are determined respectively; the disposal methods include cascade utilization and disassembly and recycling.

2. A method for screening retired power batteries considering carbon emissions as claimed in claim 1, characterized in that: The health status parameter of the retired power battery is obtained by charging and discharging, specifically: Discharging the retired power battery to a starting voltage; charging the discharged retired power battery by a constant current until a preset voltage threshold, and recording first time data; the first time data corresponds to the charging time of the constant current; Charging the retired power battery that has reached the preset voltage threshold to a preset current threshold by constant voltage, and recording second time data; The second time data corresponds to the constant voltage charging time; According to the constant current, the constant voltage, the first time data and the second time data, a health status parameter and a resistance determination coefficient of the retired power battery are obtained.

3. A method for screening retired power batteries considering carbon emissions as claimed in claim 2, characterized in that: The retired power batteries are divided into several categories, specifically: When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the retired power battery is determined to be an unqualified category; When the carbon emission of the retired power battery is less than the first threshold, and the retired power battery When the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, it is determined that the retired power battery is of a qualified category.

4. A method for screening retired power batteries considering carbon emissions as claimed in claim 3, characterized in that: According to the classification results, the disposal methods of the retired power batteries are determined respectively, specifically: When the retired power battery is determined to be unqualified, the retired power battery is dismantled and recycled; When it is determined that the retired power battery is of a qualified category, the retired power battery is recycled.

5. A method for screening retired power batteries considering carbon emissions as claimed in claim 4, characterized in that: The stepwise utilization of the retired power battery is specifically as follows: Obtaining the actual capacity of the retired power battery; Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario, and storing them in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario; Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario, and storing them in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario; Retired power batteries whose actual capacity is within a third preset range of the rated capacity are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario.

6. A retired power battery screening system considering carbon emissions, characterized in that: It includes parameter acquisition module, category classification module and disposal method determination module; among which, The parameter acquisition module is used to respond to the input operation of the client, obtain the carbon emissions of each retired power battery within the current boundary range before retirement; obtain the health status of the retired power battery through charging and discharging State parameters; the current boundary range before retirement includes the raw material processing link, battery production link, transportation link and use link; The category classification module is used to classify each of the retired power batteries into a plurality of categories according to the carbon emissions within the pre-retirement boundary range and the health status parameters of the retired power batteries; The disposal method determination module is used to determine the disposal method of each retired power battery according to the classification result; the disposal methods include cascade utilization and disassembly and recycling.

7. A retired power battery screening system considering carbon emissions as claimed in claim 6, characterized in that: The parameter acquisition module acquires the health status parameters of the retired power battery by charging and discharging, specifically: The parameter acquisition module discharges the retired power battery to a starting voltage; charges the discharged retired power battery to a preset voltage threshold through a constant current, and records first time data; The first time data corresponds to the charging time of the constant current; Charging the retired power battery that has reached the preset voltage threshold to a preset current threshold by constant voltage, and recording second time data; The second time data corresponds to the constant voltage charging time; According to the constant current, the constant voltage, the first time data and the second time data, a health status parameter and a resistance determination coefficient of the retired power battery are obtained.

8. A retired power battery screening system considering carbon emissions as claimed in claim 7, characterized in that: The category classification module classifies the retired power batteries into several categories, specifically: When the carbon emission of the retired power battery is greater than or equal to a first threshold, or the health status parameter of the retired power battery is less than or equal to a second threshold, or the resistance determination coefficient of the retired power battery is less than or equal to a third threshold, the classification module determines that the retired power battery is an unqualified category; When the carbon emissions of the retired power battery are less than the first threshold, the health status parameter of the retired power battery is greater than the second threshold, and the resistance determination coefficient of the retired power battery is greater than the third threshold, the category classification module determines that the retired power battery is a qualified category.

9. A retired power battery screening system considering carbon emissions as claimed in claim 8, characterized in that: The disposal method determination module determines the disposal methods of each of the retired power batteries according to the classification results, specifically: When it is determined that the retired power battery is of an unqualified category, the disposal method determination module disassembles and recycles the retired power battery; When it is determined that the retired power battery is of a qualified category, the disposal method determination module performs cascade utilization on the retired power battery.

10. A retired power battery screening system considering carbon emissions as claimed in claim 9, characterized in that: The disposal method determination module performs cascade utilization of the retired power battery, specifically: The disposal method determination module obtains the actual capacity of the retired power battery; Matching retired power batteries whose actual capacity is within a first preset range of the rated capacity to a first scenario, and storing them in a battery database corresponding to the first scenario; wherein the first scenario includes an electric motorcycle scenario, an electric tricycle scenario, and an electric bicycle scenario; Matching retired power batteries whose actual capacity is within a second preset range of the rated capacity to a second scenario, and storing them in a battery database corresponding to the second scenario; wherein the second scenario includes a grid energy storage scenario; Retired power batteries whose actual capacity is within a third preset range of the rated capacity are matched to a third scenario and stored in a battery database corresponding to the third scenario; wherein the third scenario includes a household electricity scenario and a power bank scenario.

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