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

Abstract

The present invention discloses a method, device and medium for low-carbon recycling of power batteries based on residual power, the method comprising: confirming recycling when the carbon emissions corresponding to the power supply efficiency are greater than a preset carbon emission index value; installing a heat recovery device on the power battery recycling device, the heat recovery device is used to recover the heat generated when the power battery is broken and heat the air inside the power battery recycling device; selecting the time period corresponding to the lowest carbon emissions from multiple different time periods to recycle the power battery. By adopting the present invention, the working efficiency of the battery can be accurately judged according to the real-time operating data of different parameters of the battery, and the appropriate time can be selected to recycle the battery; the impact of recycling in different time periods on carbon emissions can be calculated, and the appropriate time period can be selected to recycle the battery.

Description

Technical Field

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

[0002] In the process of power battery outputting electricity, no matter how the load changes, energy loss will inevitably occur. The usual power loss is divided into internal impedance loss and external resistance loss. These power losses are usually between 10% and 50% of the total power consumption, which not only greatly reduces the economic benefits, but also causes a decrease in power supply efficiency, that is, more electricity is required to achieve the same power supply effect, resulting in greater carbon emissions, making it difficult to meet the strategy of sustainable development. From the perspective of vehicle power batteries, if the vehicle battery is at the end of its life, the power utilization rate will drop significantly, increase carbon emissions, and cause a waste of grid power.

[0003] Furthermore, even if the power battery is recycled before the end of its life, the existing power battery recycling method will inevitably cause waste. This is because a large amount of heat will be generated and lost when the power battery is crushed and recycled. In this step, some of the excess energy will be lost and cannot be used. If this part of the excess heat can be used reasonably, it can greatly reduce carbon emissions. Based on the above reality, it is necessary to consider the life of the vehicle battery and the impact of the heat generated when the power battery is crushed and recycled on carbon emissions, and make improvements to the existing power battery recycling method. Summary of the invention

[0004] The embodiments of the present invention provide a method, device and medium for low-carbon recycling of power batteries based on residual power, so as to effectively and accurately judge the power supply efficiency of the battery and select the appropriate time to recycle the battery; calculate the impact of recycling in different time periods on carbon emissions, select the appropriate time period to recycle the battery and reduce carbon emissions.

[0005] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application provides a low-carbon recycling method for a power battery based on residual power, comprising:

[0006] Obtain historical operating data of power batteries;

[0007] confirming the power supply efficiency and the remaining power of the power battery according to the historical operating condition data;

[0008] 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;

[0009] 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;

[0010] A time period corresponding to the lowest carbon emission is selected from a plurality of different time periods to recycle the power battery.

[0011] In a possible implementation manner of the first aspect, confirming the power supply efficiency and the battery residual power of the power battery according to the historical operating condition data specifically includes:

[0012] 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;

[0013] 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;

[0014] 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;

[0015] 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.

[0016] In a possible implementation of the first aspect, when the fluctuation parameters corresponding to each cycle are calculated respectively 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 fluctuation parameters are calculated as follows:

[0017]

[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 according to the power supply efficiency, the residual power of the battery and the battery material, specifically includes:

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

[0021] If the power supply efficiency is less than the standard power supply efficiency, confirming 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 manner 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 heat generated when the power battery is crushed and the amount of power required by the power battery recovery device are calculated based on the components 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 including:

[0025] 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;

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

[0027] 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.

[0028] In a possible implementation of the first aspect, calculating 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 specifically includes:

[0029] Calculating a line transfer rate according to the 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 manner of the first aspect, the 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 recycling device for power batteries based on residual electricity, characterized in that it includes:

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

[0035] 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;

[0036] 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;

[0037] 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;

[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 of power batteries based on residual power as described above.

[0040] Compared with the prior art, the embodiments of the present invention provide a method, device and medium for low-carbon recycling of 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 less than the standard power supply efficiency, the battery with unsatisfactory power supply efficiency is promptly recycled, thereby reducing carbon emissions. On the other hand, according to 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] In addition, a heat recovery device is installed in the power battery recycling device to recover the heat generated when the power battery is crushed, and heat the air inside the power battery recycling device. Since the heat generated when the power battery is crushed is used to heat the air inside the power battery recycling device, the power required by the power battery recycling device for recycling is further reduced, and the reduction in the required power means a further reduction in carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic flow chart of a method for low-carbon recycling of power batteries based on residual electricity provided by one embodiment of the present invention;

[0043] Figure 2 It is a structural schematic diagram of a power battery low-carbon recovery device based on residual power provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1 An embodiment of the present invention provides a low-carbon recycling method for a power battery 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 power 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, the heat generated when the power battery is crushed 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; the power battery recovery device has a built-in heat recovery device, and the heat recovery device is used to recover the heat generated when the power battery is crushed and heat the air inside the power battery recovery device.

[0049] S13. 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.

[0050] S14, selecting 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 efficiencies correspond 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 aspects when recycling power batteries: the first point is reflected in S10-S11: judging whether the current working condition of the battery meets the carbon emission index according to the battery power supply efficiency, and recycling the battery with unqualified battery cycle life in time, thereby reducing carbon emissions; the second point is reflected in S12: by building a heat recovery device in the power battery recycling device, the heat recovery device is used to recover the heat generated when the power battery is broken and heat the air inside the power battery recycling device. Since the power battery recycling device needs to consume electricity to heat the internal air during operation, the heat recovery device can use the heat generated when the power battery is broken to heat the internal air, thereby reducing the power consumption (the lower the power consumption, the smaller the carbon emissions of 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 point is reflected in S13-S14: the recycling mechanism will inevitably generate carbon emissions when recycling. According to the line conditions between the recycling mechanism 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.

[0053] In summary, this embodiment can effectively and accurately predict the battery power supply based on the 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 general power battery recovery device includes a workbench, legs, and a disassembly device. This embodiment adds a heat recovery device on this basis. The heat recovery device is composed of a number of vacuum heat pipes connected vertically in parallel. The heat pipe is a heat transfer element that relies on the phase change of its internal working fluid to achieve heat transfer. It has the advantages of high thermal conductivity, excellent isothermal properties, etc., thereby ensuring the working efficiency of the heat recovery device composed of it.

[0055] Exemplarily, the confirming the power supply efficiency and the battery residual power 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 charging and discharging cycle, the fluctuation parameters corresponding to each cycle are calculated respectively;

[0057] 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;

[0058] 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;

[0059] 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.

[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 less carbon emissions. Therefore, before the implementation of the embodiment of the present invention, it is necessary to formulate a criterion for the power supply efficiency according to 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 can provide a part of the electric energy for the power battery recovery device during recycling (only need to connect the power battery bipolar to be recycled according to the battery interface standard to use this part of the electric energy, which will not be repeated 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 needs 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 in 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] Exemplarily, when the fluctuation parameters corresponding to each cycle are calculated respectively 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:

[0063]

[0064] 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, tw is the fluctuation duration, and is the preset constant factor.

[0065] 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 according to the power supply efficiency, the residual power of the battery and the battery material, specifically including:

[0066] Develop standard power supply efficiency based on carbon emission indicators;

[0067] If the power supply efficiency is less than the standard power supply efficiency, confirming the aging degree according to the power supply efficiency;

[0068] 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.

[0069] 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.

[0070] Generally speaking, the mass-energy heat release table includes the heat generated when various unit mass materials are broken. If you want to optimize the heat generation measurement step, you can consider including the battery model parameter in it. For example, calculate the heat generated when various common battery models are broken per unit mass. According to the mapping relationship between battery model per unit mass and heat, you can save the step of checking the battery material composition.

[0071] Exemplarily, 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 a mass-energy heat release table, specifically including:

[0072] 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;

[0073] Analyze the composition and weight of battery materials to obtain the weight of each material in the power battery;

[0074] 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.

[0075] Without considering the degree of aging of the power battery, the heat generated when the power battery is broken can be obtained by looking up the mass-energy heat release table based on the weight of each material, and the heat generated is regarded as the theoretical heat generation. However, generally speaking, power batteries will age to varying degrees when they are recycled, and aging causes the heat generation to change from the theoretical heat generation. At this time, an aging factor needs to be set according to the degree of aging, and the product of the aging factor and the theoretical heat generation is used as the heat generated when the battery is broken.

[0076] It should be noted that the historical operation data of this embodiment refers to the daily power consumption of the power battery recycling device when recycling every day in the past year.

[0077] Exemplarily, 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:

[0078] Calculating a line transfer rate according to the line distribution between the power plant and the power battery recovery device;

[0079] 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.

[0080] 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.

[0081] Exemplarily, the calculating of the carbon emissions generated by recycling the power battery in a plurality of different time periods is specifically as follows:

[0082] Carbon emissions from recycling power batteries = (carbon emissions from electricity generation * power supply required by the power battery recycling device) / (line transmission rate).

[0083] It should be noted that the above line transfer rate is related to the connection structure between the distribution node of the distribution network and the corresponding charging equipment, and it is necessary to set up electric energy meters to measure the electric energy at both ends. The carbon emissions of the distribution network are the carbon emissions caused by the unit electricity generated by the distribution network, and the carbon emissions mainly come from thermal power generation.

[0084] 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 carbon emission indicators. 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, according to 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.

[0085] In addition, a heat recovery device is installed in the power battery recycling device to recover the heat generated when the power battery is crushed, and heat the air inside the power battery recycling device. Since the heat generated when the power battery is crushed is used to heat the air inside the power battery recycling device, the power required by the power battery recycling device for recycling is further reduced, and the reduction in the required power means a further reduction in carbon emissions.

[0086] See also Figure 2 A second aspect of an embodiment of the present application provides a low-carbon recovery device for a power battery 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.

[0087] The data acquisition module 20 is used to acquire the historical operating condition data of the power battery.

[0088] The battery confirmation module 21 is used to confirm the power supply efficiency and the battery residual power of the power battery according to the historical operating condition data.

[0089] 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 according to 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.

[0090] 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.

[0091] The recycling module 24 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.

[0092] Those skilled in the art can 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.

[0093] Compared with the prior art, an embodiment of the present invention provides a low-carbon recycling device for power batteries based on residual power. On the one hand, a standard power supply efficiency is formulated in advance according to carbon emission indicators. 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, according to 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.

[0094] In addition, a heat recovery device is installed in the power battery recycling device to recover the heat generated when the power battery is crushed, and heat the air inside the power battery recycling device. Since the heat generated when the power battery is crushed is used to heat the air inside the power battery recycling device, the power required by the power battery recycling device for recycling is further reduced, and the reduction in the required power means a further reduction in carbon emissions.

[0095] 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 of power batteries based on residual power as described above.

[0096] The computer device may be a computing device such as a smart phone, a tablet computer, a desktop computer, a cloud server, etc. The computer device may include but is not limited to a processor and a memory. Those skilled in the art will appreciate that the computer device may include an input and output device, a network access device, etc.

[0097] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or 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, etc.

[0098] 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, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Further, the memory may also 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 (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory may also be used to temporarily store data that has been output or is to be output.

[0099] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle 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 recovery device, the carbon emissions generated by recovering 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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