Remaining-battery-capacity-based low-carbon recycling method and apparatus for traction battery, and medium

Abstract

A remaining-battery-capacity-based low-carbon recycling method and apparatus for a traction battery, and a computer-readable storage medium. The recycling method comprises: when the carbon emission amount corresponding to the power supply efficiency of a traction battery is greater than a preset carbon emission index value, determining to recycle the traction battery, and additionally providing a heat recovery apparatus in a traction battery recycling apparatus, wherein the heat recovery apparatus is used for recovering heat which is generated when the traction battery breaks, and used for heating air inside the traction battery recycling apparatus; and selecting from among a plurality of different time periods the time period corresponding to the lowest carbon emission amount, so as to recycle the traction battery. The operating efficiency of the traction battery is accurately determined on the basis of real-time working state data of different parameters of the traction battery, and an appropriate occasion is selected for recycling the traction battery; and the impact of recycling the traction battery in different time periods on carbon emissions is calculated, and an appropriate time period is selected for recycling the traction battery.

Description

A low-carbon recycling method, device and medium for power batteries based on residual power Technical Field

[0001] The present invention relates to the field of automobile power battery management, and in particular to a low-carbon recovery method, device and medium for power batteries based on residual power. Background Art

[0002] During the power battery's power output process, regardless of load changes, energy loss is inevitable. This energy loss is typically divided into internal impedance loss and external resistance loss. These losses typically range from 10% to 50% of total power consumption, significantly reducing economic benefits and lowering power supply efficiency. This means more power is required to achieve the same power output, resulting in greater carbon emissions and making it difficult to meet sustainable development strategies. From the perspective of automotive power batteries, at the end of their lifespan, their power utilization rate drops significantly, increasing carbon emissions and wasting grid power.

[0003] Furthermore, even if vehicle batteries are recycled before they reach the end of their lifespan, existing recycling methods inevitably result in waste. This is because the crushing and recycling of power batteries generates a large amount of heat and is lost. This excess energy is wasted and unused. If this excess heat can be properly utilized, carbon emissions can be greatly reduced. Based on this reality, it is necessary to consider the lifespan of vehicle batteries and the impact of heat generated during crushing and recycling on carbon emissions, and to improve existing recycling methods.

[0004] Summary of the Invention

[0005] Embodiments of the present invention provide a low-carbon recycling method, device, and medium for power batteries based on residual power, which can effectively and accurately determine the battery power supply efficiency and select the appropriate time to recycle the battery. The method also calculates the impact of recycling at different time periods on carbon emissions, selects the appropriate time period for recycling the battery, and reduces carbon emissions.

[0006] To achieve the above objectives, a first aspect of an embodiment of the present application provides a low-carbon recycling method for power batteries based on residual power, comprising:

[0007] Obtain historical operating data of power batteries;

[0008] confirming the power supply efficiency and the remaining battery capacity of the power battery based on the historical operating condition data;

[0009] If the carbon emissions corresponding to the power supply efficiency are greater than a preset carbon emission index value, the heat generated when the power battery is broken and the power required by the power battery recovery device are calculated based on the power supply efficiency, the residual power of the battery, and the battery material;

[0010] Calculating the carbon emissions generated by recycling the power batteries during multiple time periods based on the power supply information of the power plant and the power supply required by the power battery recycling device; the carbon emissions include the carbon emissions generated when the power plant supplies power and the carbon emissions generated when the power battery recycling device is in operation;

[0011] A time period corresponding to the lowest carbon emission is selected from a plurality of different time periods to recycle the power battery.

[0012] In a possible implementation of the first aspect, determining the power supply efficiency and the remaining battery capacity of the power battery according to the historical operating condition data specifically includes:

[0013] According to the charging current fluctuation value, discharging current fluctuation value, discharge depth and fluctuation duration in each charge and discharge cycle, the fluctuation parameters corresponding to each cycle are calculated respectively;

[0014] Calculate the efficiency to be calibrated corresponding to each cycle based on the charging current value, discharging current value, input voltage, output voltage and charging and discharging time in each charging and discharging cycle;

[0015] Summing the fluctuation parameter and the efficiency to be calibrated of each cycle respectively to obtain the cycle power supply efficiency corresponding to each cycle;

[0016] Calculate the remaining battery capacity based on the charging current, discharging current, input voltage, output voltage, and charging and discharging time in the last charge and discharge cycle.

[0017] In a possible implementation of the first aspect, when calculating the fluctuation parameters corresponding to each cycle based on the charging current fluctuation value, the discharging current fluctuation value, the discharge depth, and the fluctuation duration in each charge and discharge cycle, the fluctuation parameters are calculated as follows:

[0018] Where W is the fluctuation parameter, I w is the charging current fluctuation value within the cycle, U w is the discharge current fluctuation value within the cycle, C is the discharge depth within the cycle, t w is the fluctuation duration, and is the preset constant factor.

[0019] In a possible implementation of the first aspect, if the power supply efficiency does not meet the carbon emission index, calculating the heat generated when the power battery is broken and the power supply required by the power battery recovery device based on the power supply efficiency, the remaining battery capacity, and the battery material, specifically includes:

[0020] Establish standard power supply efficiency based on carbon emission indicators;

[0021] If the power supply efficiency is less than the standard power supply efficiency, determining the aging degree according to the power supply efficiency;

[0022] According to the composition of the battery material, the weight of the battery material and the degree of aging, combined with the mass-energy heat release table, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated.

[0023] In a possible implementation of the first aspect, the combined mass-energy-heat release table is obtained by a battery recycling plant after multiple production tests using a power battery recycling device.

[0024] In a possible implementation of the first aspect, the calculation of the heat generated when the power battery is broken and the power required by the power battery recovery device based on the composition of the battery material, the weight of the battery material, and the degree of aging, in combination with a mass-energy-heat release table, specifically includes:

[0025] Based on the historical operating data of the power battery recycling device, determine the power supply required for crushing materials of various unit weights;

[0026] Analyze the composition and weight of battery materials to obtain the weight of each material in the power battery;

[0027] The heat generated when the power battery is crushed and the power supply required by the power battery recovery device are calculated based on the power supply required when crushing materials of various unit weights and the weight corresponding to each material, combined with the aging degree.

[0028] In a possible implementation of the first aspect, calculating, based on power supply information of the power plant and power supply required by the power battery recovery device, carbon emissions generated by recovering the power battery in multiple different time periods specifically includes:

[0029] Calculating a line transfer rate based on line distribution between the power plant and the power battery recovery device;

[0030] The carbon emissions generated by recycling the power battery in multiple different time periods are calculated based on the power supply required by the power battery recovery device, the line transmission rate, and the carbon emissions per unit of electricity generated by the distribution network in each time period in the power supply information of the power plant.

[0031] In a possible implementation of the first aspect, calculating the carbon emissions generated by recycling the power battery in multiple different time periods is specifically:

[0032] Carbon emissions from recycling power batteries = (carbon emissions from electricity generation * power supply required by the power battery recycling device) / (line transmission rate).

[0033] A second aspect of the embodiment of the present application provides a low-carbon recovery device for power batteries based on residual power, characterized in that it includes:

[0034] A data acquisition module is used to obtain historical operating condition data of the power battery;

[0035] A battery confirmation module, configured to confirm the power supply efficiency and the remaining battery capacity of the power battery based on the historical operating condition data;

[0036] a power supply calculation module, configured to calculate, if the carbon emissions corresponding to the power supply efficiency are greater than a preset carbon emission index value, the heat generated when the power battery is broken and the power supply required by the power battery recovery device based on the power supply efficiency, the residual power of the battery, and the battery material;

[0037] a carbon emission calculation module, configured to calculate the carbon emissions generated by recycling the power battery in multiple different time periods based on the power supply information of the power plant and the power supply required by the power battery recovery device; the carbon emissions include the carbon emissions generated when the power plant supplies power and the carbon emissions generated when the power battery recovery device is in operation;

[0038] The recycling module is used to select a time period corresponding to the lowest carbon emission from a plurality of different time periods to recycle the power battery.

[0039] A third aspect of an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the low-carbon recycling method for power batteries based on residual power as described above.

[0040] Compared with the prior art, the embodiments of the present invention provide a low-carbon recycling method, device and medium for power batteries based on residual power. On the one hand, a standard power supply efficiency is formulated in advance according to the carbon emission index. If the power supply efficiency of the power battery is lower than the standard power supply efficiency, the battery with unsatisfactory power supply efficiency is promptly recycled, thereby reducing carbon emissions. On the other hand, based on the power supply information of the power plant and the power supply required by the power battery recycling device, the carbon emissions generated by recycling the power battery in multiple different time periods are calculated, and then the time period corresponding to the lowest carbon emissions is selected from the multiple different time periods to recycle the power battery. According to the geographical relationship between the recycling organization and the power plant and the power supply plan of the power plant, the carbon emissions caused by recycling at different times are reasonably predicted, and then the appropriate time is selected to reduce carbon emissions.

[0041] Furthermore, a heat recovery device is installed within the power battery recycling system to recover the heat generated during battery crushing, heating the air inside the system. This heat is used to heat the air inside the system, further reducing the amount of power required for recycling. This reduction in power consumption also means further reductions in carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic flow chart of a low-carbon recycling method for power batteries based on residual power according to an embodiment of the present invention;

[0043] FIG2 is a schematic structural diagram of a low-carbon recovery device for power batteries based on residual power provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] 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.

[0045] Referring to FIG1 , an embodiment of the present invention provides a low-carbon recycling method for power batteries based on residual power, comprising:

[0046] S10. Obtain historical operating condition data of the power battery.

[0047] S11. Confirming the power supply efficiency and the remaining battery capacity of the power battery according to the historical operating condition data.

[0048] S12. If the carbon emissions corresponding to the power supply efficiency are greater than a preset carbon emission index value, calculate the heat generated when the power battery is broken and the power supply required by the power battery recovery device based on the power supply efficiency, the residual power of the battery, and the battery material; the power battery recovery device has a built-in heat recovery device, which is used to recover the heat generated when the power battery is broken and heat the air inside the power battery recovery device.

[0049] S13. Calculate carbon emissions generated by recycling the power batteries in multiple different time periods based on power supply information from the power plant and the power supply required by the power battery recycling device; the carbon emissions include carbon emissions generated when the power plant supplies power and carbon emissions generated when the power battery recycling device is in operation.

[0050] S14. Select a time period corresponding to the lowest carbon emission from a plurality of different time periods to recycle the power battery.

[0051] It should be noted that the carbon emission index value preset in S11 is an index value formulated according to the national carbon emission standards. Different battery power supply efficiency corresponds to different carbon emissions (which can be obtained based on multiple actual experiments). If the carbon emissions corresponding to the current power supply efficiency of the battery are greater than the preset index value, it means that the current operating conditions of the battery do not meet the carbon emission indicators.

[0052] The embodiment of the present invention reduces carbon emissions from three perspectives during power battery recycling. The first, as reflected in S10-S11, determines whether the current operating condition of the battery meets carbon emission indicators based on the battery power efficiency, and promptly recycles batteries that fail the cycle life test, thereby reducing carbon emissions. The second, as reflected in S12, is that a heat recovery device is built into the power battery recycling device. The heat recovery device is used to recover heat generated by the power battery during fragmentation and heat the air within the power battery recycling device. Since the power battery recycling device consumes electricity to heat the internal air during operation, the heat recovery device can use the heat generated by the power battery during fragmentation to heat the internal air, thereby reducing power consumption (lower power consumption means lower carbon emissions from the power plant). The introduction of the heat recovery device optimizes the structure of the power battery recycling device and thus reduces carbon emissions. The third, as reflected in S13-S14, is that recycling by the recycling mechanism inevitably generates carbon emissions. Based on the line conditions between the recycling mechanism and the power plant and the power supply plan of the power plant, the carbon emissions resulting from recycling at different times can be reasonably predicted, thereby selecting the appropriate time to reduce carbon emissions.

[0053] In summary, this embodiment can effectively and accurately predict battery power supply based on real-time operating data of different battery parameters, and select the appropriate time to recycle the battery; calculate the impact of recycling at different times on carbon emissions, and select the appropriate time to recycle the battery.

[0054] It should be noted that a typical power battery recovery device includes a workbench, legs, and a disassembly device. This embodiment adds a heat recovery device to this structure. The heat recovery device is composed of several vacuum heat pipes connected vertically in parallel. Heat pipes are heat transfer elements that transfer heat through the phase change of their internal working fluid. They have advantages such as high thermal conductivity and excellent isothermal properties, thereby ensuring the operating efficiency of the heat recovery device.

[0055] Exemplarily, confirming the power supply efficiency and the remaining battery capacity of the power battery according to the historical operating condition data specifically includes:

[0056] According to the charging current fluctuation value, discharging current fluctuation value, discharge depth and fluctuation duration in each charge and discharge cycle, the fluctuation parameters corresponding to each cycle are calculated respectively;

[0057] Calculate the efficiency to be calibrated corresponding to each cycle based on the charging current value, discharging current value, input voltage, output voltage and charging and discharging time in each charging and discharging cycle;

[0058] Summing the fluctuation parameter and the efficiency to be calibrated of each cycle respectively to obtain the cycle power supply efficiency corresponding to each cycle;

[0059] Calculate the remaining battery capacity based on the charging current, discharging current, input voltage, output voltage, and charging and discharging time in the last charge and discharge cycle.

[0060] The main purpose of this embodiment is to obtain two parameters, one parameter is the power supply efficiency of the power battery, and the other parameter is the residual power of the battery. The power supply efficiency of the power battery reflects the reliability and carbon emissions of the power battery to a certain extent. The higher the power supply efficiency, the higher the energy utilization rate, and the lower the carbon emissions. Therefore, before the implementation of the embodiment of the present invention, it is necessary to formulate an evaluation standard for the power supply efficiency based on the target carbon emissions. When the power supply efficiency is insufficient, it means that the power battery needs to be recycled at this time, and the residual power of the battery during recycling can provide a part of the electric energy for the power battery recovery device (this part of the electric energy can be utilized by simply connecting the power battery bipolar to be recycled according to the battery interface standard, which will not be elaborated here). The heat generated when the battery is crushed can be used to heat the air inside the power battery recovery device through the heat recovery device. Originally, the power battery recovery device requires the power plant to provide electricity for air heating to assist in crushing the battery. The heat generated when the battery is crushed can further reduce the amount of electricity required for recycling the power battery.

[0061] In addition, this embodiment performs a cycle power supply efficiency calculation formula, comprehensively examines the power supply efficiency of the power battery over multiple cycles, and introduces a fluctuation parameter to minimize the error caused by the power battery state fluctuation observed during measurement, thereby ensuring the accuracy of the calculated power supply efficiency.

[0062] For example, when calculating the fluctuation parameters corresponding to each cycle based on the charging current fluctuation value, the discharging current fluctuation value, the discharge depth, and the fluctuation duration in each charge and discharge cycle, the fluctuation parameters are calculated as follows:

[0063] Where W is the fluctuation parameter, I w is the charging current fluctuation value within the cycle, U w is the discharge current fluctuation value within the cycle, C is the discharge depth within the cycle, t w is the fluctuation duration, and is the preset constant factor.

[0064] Exemplarily, if the power supply efficiency does not meet the carbon emission index, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated based on the power supply efficiency, the remaining power of the battery, and the battery material, specifically including:

[0065] Establish standard power supply efficiency based on carbon emission indicators;

[0066] If the power supply efficiency is less than the standard power supply efficiency, determining the aging degree according to the power supply efficiency;

[0067] According to the composition of the battery material, the weight of the battery material and the degree of aging, combined with the mass-energy heat release table, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated.

[0068] Exemplarily, the combined mass-energy-heat release table is obtained by a battery recycling plant after multiple production tests using a power battery recycling device.

[0069] Generally speaking, a mass-energy heat release table includes the heat generated by various materials per unit mass upon crushing. To optimize the heat generation measurement step, consider incorporating the battery model as a parameter. For example, calculating the heat generated per unit mass of various common battery models upon crushing can eliminate the need to check the battery material composition by mapping the heat generated per unit mass to the battery model.

[0070] Exemplarily, the calculation of the heat generated when the power battery is broken and the power required by the power battery recovery device based on the composition of the battery material, the weight of the battery material and the degree of aging, in combination with a mass-energy-heat release table, specifically includes:

[0071] Based on the historical operating data of the power battery recycling device, determine the power supply required for crushing materials of various unit weights;

[0072] Analyze the composition and weight of battery materials to obtain the weight of each material in the power battery;

[0073] The heat generated when the power battery is crushed and the power supply required by the power battery recovery device are calculated based on the power supply required when crushing materials of various unit weights and the weight corresponding to each material, combined with the aging degree.

[0074] Without considering the degree of battery aging, the heat generated during battery crushing can be calculated by consulting the mass-energy heat release table based on the weight of each material and considered the theoretical heat output. However, generally, recycled batteries experience varying degrees of aging, which can cause heat output to differ from the theoretical heat output. Therefore, an aging factor is set based on the degree of aging. The product of the aging factor and the theoretical heat output is used as the heat output during crushing.

[0075] It should be noted that the historical operation data of this embodiment refers to the daily power consumption of the power battery recycling device during recycling every day in the past year.

[0076] Exemplarily, the calculating, based on the power supply information of the power plant and the power supply required by the power battery recovery device, the carbon emissions generated by recovering the power battery in multiple different time periods specifically includes:

[0077] Calculating a line transfer rate based on line distribution between the power plant and the power battery recovery device;

[0078] The carbon emissions generated by recycling the power battery in multiple different time periods are calculated based on the power supply required by the power battery recovery device, the line transmission rate, and the carbon emissions per unit of electricity generated by the distribution network in each time period in the power supply information of the power plant.

[0079] It should be noted that the time periods in this embodiment refer to different time periods in a day. Generally speaking, a day is divided into 12 time periods of equal length, and the length of each time period is two hours.

[0080] Exemplarily, the calculating of carbon emissions generated by recycling the power battery in multiple different time periods is specifically as follows:

[0081] Carbon emissions from recycling power batteries = (carbon emissions from electricity generation * power supply required by the power battery recycling device) / (line transmission rate).

[0082] It's important to note that the aforementioned line transfer rate is related to the connection structure between the distribution network's distribution nodes and the corresponding charging equipment. Energy meters are required to measure the energy at both ends. The carbon emissions of the distribution network are the carbon emissions caused by each unit of electricity generated by the network, primarily from thermal power generation.

[0083] Compared with the prior art, an embodiment of the present invention provides a low-carbon recycling method for power batteries based on residual power. On the one hand, a standard power supply efficiency is formulated in advance according to the carbon emission index. If the power supply efficiency of the power battery is lower than the standard power supply efficiency, the battery with unsatisfactory power supply efficiency is promptly recycled, thereby reducing carbon emissions. On the other hand, based on the power supply information of the power plant and the power supply required by the power battery recycling device, the carbon emissions generated by recycling the power battery in multiple different time periods are calculated, and then the time period corresponding to the lowest carbon emissions is selected from the multiple different time periods to recycle the power battery. According to the geographical relationship between the recycling organization and the power plant and the power supply plan of the power plant, the carbon emissions caused by recycling at different times are reasonably predicted, and then the appropriate time is selected to reduce carbon emissions.

[0084] Furthermore, a heat recovery device is installed within the power battery recycling system to recover the heat generated during battery crushing, heating the air inside the system. This heat is used to heat the air inside the system, further reducing the amount of power required for recycling. This reduction in power consumption also means further reductions in carbon emissions.

[0085] Referring to Figure 2, the second aspect of an embodiment of the present application provides a low-carbon recovery device for power batteries based on residual power, including a data acquisition module 20, a battery confirmation module 21, a power supply calculation module 22, a carbon emission calculation module 23 and a recovery module 24.

[0086] The data acquisition module 20 is used to acquire historical operating condition data of the power battery.

[0087] The battery confirmation module 21 is used to confirm the power supply efficiency and the remaining battery capacity of the power battery according to the historical operating condition data.

[0088] The power supply calculation module 22 is used to calculate the heat generated when the power battery is broken and the power supply required by the power battery recovery device based on the power supply efficiency, the residual power of the battery and the battery material if the carbon emissions corresponding to the power supply efficiency are greater than the preset carbon emission index value.

[0089] The carbon emission calculation module 23 is used to calculate the carbon emissions generated by recovering the power battery in multiple different time periods based on the power supply information of the power plant and the power supply required by the power battery recovery device; the carbon emissions include the carbon emissions generated when the power plant supplies power and the carbon emissions generated when the power battery recovery device is in operation.

[0090] The recycling module 24 is configured to select a time period corresponding to a lowest carbon emission amount from a plurality of different time periods to recycle the power battery.

[0091] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the positioning device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0092] Compared with the prior art, an embodiment of the present invention provides a low-carbon recovery device for power batteries based on residual power. On the one hand, a standard power supply efficiency is formulated in advance according to the carbon emission index. If the power supply efficiency of the power battery is lower than the standard power supply efficiency, the battery with unsatisfactory power supply efficiency is promptly recycled, thereby reducing carbon emissions. On the other hand, based on the power supply information of the power plant and the power supply required by the power battery recovery device, the carbon emissions generated by recycling the power battery in multiple different time periods are calculated, and then the time period corresponding to the lowest carbon emissions is selected from the multiple different time periods to recycle the power battery. According to the geographical relationship between the recycling organization and the power plant and the power supply plan of the power plant, the carbon emissions caused by recycling at different times are reasonably predicted, and then the appropriate time is selected to reduce carbon emissions.

[0093] Furthermore, a heat recovery device is installed within the power battery recycling system to recover the heat generated during battery crushing, heating the air inside the system. This heat is used to heat the air inside the system, further reducing the amount of power required for recycling. This reduction in power consumption also means further reductions in carbon emissions.

[0094] A third aspect of an embodiment of the present application provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the low-carbon recycling method for power batteries based on residual power as described above.

[0095] The computer device may be a computing device such as a smartphone, tablet computer, desktop computer, or cloud server. The computer device may include, but is not limited to, a processor and memory. Those skilled in the art will appreciate that the computer device may also include input / output devices, network access devices, and the like.

[0096] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0097] In some embodiments, the memory may be an internal storage unit of the computer device, such as a hard disk or memory of the computer device. In other embodiments, the memory may also be an external storage device of the computer device, such as a plug-in hard disk equipped on the computer device, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Furthermore, the memory may include both an internal storage unit of the computer device and an external storage device. The memory is used to store an operating system, an application program, a boot loader, data, and other programs, such as the program code of the computer program. The memory may also be used to temporarily store data that has been output or is about to be output.

[0098] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A low-carbon recycling method for power batteries based on residual electricity, characterized in that: include: Obtain historical operating data of power batteries; confirming the power supply efficiency and the remaining power of the power battery according to the historical operating condition data; If the carbon emission corresponding to the power supply efficiency is greater than the preset carbon emission index value, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated according to the power supply efficiency, the residual power of the battery and the battery material; Calculate the carbon emissions generated by recycling the power battery in multiple different time periods according to the power supply information of the power plant and the power supply required by the power battery recycling device; the carbon emissions include the carbon emissions generated when the power plant supplies power and the carbon emissions generated when the power battery recycling device is in operation; A time period corresponding to the lowest carbon emission is selected from a plurality of different time periods to recycle the power battery.

2. The low-carbon recycling method for power batteries based on residual electricity according to claim 1, characterized in that: The confirming the power supply efficiency and the battery residual power of the power battery according to the historical operating condition data specifically includes: According to the charging current fluctuation value, discharging current fluctuation value, discharge depth and fluctuation duration in each charging and discharging cycle, the fluctuation parameters corresponding to each cycle are calculated respectively; According to the charging current value, discharging current value, input voltage, output voltage and charging and discharging time in each charging and discharging cycle, the efficiency to be calibrated corresponding to each cycle is calculated; The fluctuation parameter and the efficiency to be calibrated of each cycle are summed up respectively to obtain the cycle power supply efficiency corresponding to each cycle; The remaining battery capacity is calculated based on the charging current value, discharging current value, input voltage, output voltage and charging and discharging time in the last charging and discharging cycle.

3. The low-carbon recycling method for power batteries based on residual electricity according to claim 2, characterized in that: When the fluctuation parameters corresponding to each cycle are calculated according to the charging current fluctuation value, the discharging current fluctuation value, the discharge depth and the fluctuation duration in each charging and discharging cycle, the calculation method of the fluctuation parameters is as follows: Where W is the fluctuation parameter, I w is the charging current fluctuation value within the cycle, U w is the discharge current fluctuation value within the cycle, C is the discharge depth within the cycle, t w is the fluctuation duration, and is the preset constant factor.

4. The low-carbon recycling method for power batteries based on residual electricity according to claim 1, characterized in that: If the power supply efficiency does not meet the carbon emission index, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated according to the power supply efficiency, the residual power of the battery and the battery material, specifically including: Develop standard power supply efficiency based on carbon emission indicators; If the power supply efficiency is less than the standard power supply efficiency, determining the aging degree according to the power supply efficiency; According to the composition of the battery material, the weight of the battery material and the degree of aging, combined with the mass-energy heat release table, the heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated.

5. The low-carbon recycling method for power batteries based on residual electricity according to claim 4, characterized in that: The combined mass-energy-heat release table is obtained by a battery recycling plant after multiple production tests using a power battery recycling device.

6. The low-carbon recycling method for power batteries based on residual electricity according to claim 4, characterized in that: The heat generated when the power battery is broken and the power supply required by the power battery recovery device are calculated based on the composition of the battery material, the weight of the battery material and the degree of aging, in combination with the mass-energy heat release table, specifically including: According to the historical operation data of the power battery recycling device, the power supply required for crushing materials of various unit weights is confirmed; Analyze the composition and weight of battery materials to obtain the weight of each material in the power battery; According to the power supply required when crushing materials of various unit weights and the weight corresponding to each material, the heat generated when the power battery is crushed and the power supply required by the power battery recovery device are calculated in combination with the aging degree.

7. The low-carbon recycling method for power batteries based on residual electricity according to claim 1, characterized in that: The calculating, based on the power supply information of the power plant and the power supply required by the power battery recycling device, the carbon emissions generated by recycling the power battery in multiple different time periods specifically includes: Calculating a line transfer rate according to the line distribution between the power plant and the power battery recovery device; The carbon emissions generated by recycling the power battery in multiple different time periods are calculated based on the power supply required by the power battery recovery device, the line transmission rate and the carbon emissions per unit of electricity generated by the distribution network in each time period in the power supply information of the power plant.

8. The low-carbon recycling method for power batteries based on residual electricity according to claim 7, characterized in that: The calculating of the carbon emissions generated by recycling the power battery in multiple different time periods is specifically: Carbon emissions from recycling power batteries = (carbon emissions from electricity generation * power supply required by the power battery recycling device) / (line transmission rate).

9. A low-carbon recycling device for power batteries based on residual electricity, characterized in that: include A data acquisition module is used to obtain historical operating data of the power battery; A battery confirmation module, used to confirm the power supply efficiency and battery residual power of the power battery according to the historical operating condition data; A power supply calculation module, for calculating the heat generated when the power battery is broken and the power supply required by the power battery recovery device according to the power supply efficiency, the residual power of the battery and the battery material, if the carbon emission corresponding to the power supply efficiency is greater than a preset carbon emission index value; A carbon emission calculation module, used to calculate the carbon emissions generated by recycling the power battery in multiple different time periods according to the power supply information of the power plant and the power supply required by the power battery recovery device; the carbon emissions include the carbon emissions generated when the power plant supplies power and the carbon emissions generated when the power battery recovery device is in operation; The recycling module is used to select a time period corresponding to the lowest carbon emission from a plurality of different time periods to recycle the power battery.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the low-carbon recycling method for power batteries based on residual power as described in any one of claims 1 to 8.

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