CN117501514B - Low-carbon recovery method, device and medium for power battery based on residual electric quantity - Google Patents
Low-carbon recovery method, device and medium for power battery based on residual electric quantity Download PDFInfo
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Abstract
The invention discloses a low-carbon recovery method, a device and a medium for a power battery based on residual electric quantity, wherein the method comprises the steps of confirming recovery when the carbon emission corresponding to the power supply efficiency is greater than a preset carbon emission index value; and the power battery recovery device is additionally provided with a heat recovery device, the heat recovery device is used for recovering heat generated when the power battery is broken and heating air in the power battery recovery device, and the power battery is recovered in a corresponding time period when the carbon emission is lowest in a plurality of different time periods. The method and the device accurately judge the working efficiency of the battery according to the real-time working condition data of different parameters of the battery, select proper time to recycle the battery, calculate the influence of recycling in different time periods on carbon emission, and select proper time period to recycle the battery.
Description
Technical Field
The invention relates to the field of automobile power battery management, in particular to a low-carbon recovery method, device and medium for a power battery based on residual electric quantity.
Background
In the process of outputting electric energy, the power battery inevitably generates energy loss no matter how the load changes, and the common electric energy loss is divided into internal impedance loss and external resistance loss, and the electric energy loss is usually between 10% and 50% of the whole electric consumption, so that the economic benefit is greatly reduced, the power supply efficiency is reduced, more electric quantity is required for achieving the same power supply effect, and further, larger carbon emission is caused, and the strategy of sustainable development is difficult to meet. From the perspective of the vehicle-mounted power battery, if the vehicle-mounted battery is at the end of life, the electric utilization rate can be greatly reduced, carbon emission is increased, and meanwhile, the electric energy of the electric network is wasted.
Further, even if the power battery is recovered before the vehicle battery reaches the end of life, the existing power battery recovery method inevitably causes waste, because a large amount of heat is generated and lost when the power battery is crushed and recovered, and part of the surplus energy is lost and not utilized, and if the surplus heat can be reasonably utilized, the carbon emission can be greatly reduced. Based on the reality, the service life of the vehicle-mounted battery and the influence of heat generated when the power battery is crushed and recovered on the carbon emission amount need to be considered, and the existing power battery recovery method is improved.
Disclosure of Invention
The embodiment of the invention provides a low-carbon recovery method, a device and a medium for a power battery based on residual electric quantity, which are used for effectively and accurately judging the power supply efficiency of the battery, selecting proper time to recover the battery, calculating the influence of recovery on carbon emission in different time periods, selecting proper time period to recover the battery and reducing carbon emission.
In order to achieve the above object, a first aspect of the embodiments of the present application provides a method for recovering low carbon from a power battery based on residual electric power, including:
Acquiring historical working condition data of a power battery;
confirming the power supply efficiency and the residual battery electric quantity of the power battery according to the historical working condition data;
if the carbon emission corresponding to the power supply efficiency is larger than a preset carbon emission index value, calculating heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the power supply efficiency, the residual electric quantity of the battery and the battery material;
According to power plant power supply information and the power supply quantity required by the power battery recovery device, calculating the carbon emission quantity generated by recovering the power battery in a plurality of different time periods, wherein the carbon emission quantity comprises the carbon emission quantity generated when the power plant supplies power and the carbon emission quantity generated when the power battery recovery device operates;
and selecting a time period corresponding to the lowest carbon emission from a plurality of different time periods, and recovering the power battery.
In a possible implementation manner of the first aspect, the determining, according to the historical operating condition data, power supply efficiency and battery residual capacity of the power battery specifically includes:
According to the fluctuation value of the charging current, the fluctuation value of the discharging current, the discharging depth and the fluctuation time length in each charging and discharging period, respectively calculating the fluctuation parameters corresponding to each period;
Calculating the efficiency to be calibrated corresponding to each period according to the charging current value, the discharging current value, the input voltage, the output voltage and the charging and discharging time in each charging and discharging period;
Summing the fluctuation parameter and the efficiency to be calibrated of each period respectively to obtain period power supply efficiency corresponding to each period;
And calculating the residual electric quantity of the battery according to the charging current value, the discharging current value, the input voltage, the output voltage and the charging and discharging time in the last charging and discharging period.
In one possible implementation manner of the first aspect, when calculating the fluctuation parameter corresponding to each period according to the charging current fluctuation value, the discharging depth and the fluctuation duration in each charging and discharging period, the calculation manner of the fluctuation parameter is as follows:
wherein W is a fluctuation parameter, I w is a fluctuation value of charging current in a period, U w is a fluctuation value of discharging current in a period, C is a depth of discharge in a period, t w is a fluctuation duration, AndIs a preset constant factor.
In a possible implementation manner of the first aspect, if the power supply efficiency does not meet a carbon emission index, calculating, according to the power supply efficiency, the residual electric quantity of the battery and a battery material, heat generated when the power battery is broken and a power supply quantity required by a power battery recovery device specifically includes:
Standard power supply efficiency is formulated according to the carbon emission index;
if the power supply efficiency is smaller than the standard power supply efficiency, determining the aging degree according to the power supply efficiency;
And calculating the heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the composition of the battery material, the weight of the battery material and the ageing degree by combining a mass energy heat release meter.
In a possible implementation manner of the first aspect, the combined mass energy heat release table is obtained after a plurality of production tests by a battery recycling plant using a power battery recycling device.
In one possible implementation manner of the first aspect, the calculating, according to the composition of the battery material, the weight of the battery material and the aging degree, in combination with a heat energy release meter, the heat generated when the power battery breaks and the power supply amount required by the power battery recovery device specifically includes:
according to the historical operation data of the power battery recovery device, confirming the required power supply quantity when various materials with unit weight are crushed;
Analyzing the composition and the weight of the battery materials to obtain the weight corresponding to each material in the power battery;
And calculating the heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the power supply quantity required by breaking various materials with unit weight and the weight corresponding to each material and combining the ageing degree.
In a possible implementation manner of the first aspect, the calculating, according to power plant power supply information and a power supply amount required by the power battery recycling device, the carbon emission amount generated by the power battery during a plurality of different time periods includes:
Calculating a line transmissibility according to line distribution between a power plant and the power battery recovery device;
And calculating the carbon emission generated by the power battery in a plurality of different time periods according to the power supply quantity required by the power battery recovery device, the line transmissibility and the electricity generation carbon emission of the unit electric quantity generated by the power distribution network in each time period in the power supply information of the power plant.
In a possible implementation manner of the first aspect, the calculating the carbon emission amount generated by the power battery during a plurality of different time periods includes:
Carbon emission generated by the recovery power battery= (electricity generation carbon emission amount x power supply amount required by the power battery recovery device)/(line transmissibility).
A second aspect of the embodiments of the present application provides a low-carbon recovery device for a power battery based on residual electric power, which is characterized by comprising
The data acquisition module is used for acquiring historical working condition data of the power battery;
the battery confirmation module is used for confirming the power supply efficiency and the battery residual electric quantity of the power battery according to the historical working condition data;
The power supply quantity calculation module is used for calculating heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the power supply efficiency, the residual electric quantity of the battery and the battery material if the carbon emission quantity corresponding to the power supply efficiency is larger than a preset carbon emission index value;
The carbon emission calculation module is used for calculating the carbon emission generated by the power battery in a plurality of different time periods according to the power supply information of the power plant and the power supply amount required by the power battery recovery device, wherein the carbon emission comprises the carbon emission generated when the power plant supplies power and the carbon emission generated when the power battery recovery device operates;
And the recovery module is used for selecting a time period corresponding to the lowest carbon emission from a plurality of different time periods to recover the power battery.
A third aspect of the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium includes a stored computer program, where the computer program when executed controls a device in which the computer readable storage medium is located to execute the method for recovering low carbon from a power battery based on residual electric power as described above.
Compared with the prior art, the low-carbon recovery method, the device and the medium for the power battery based on the residual electric quantity are provided, according to the first aspect, standard power supply efficiency is formulated in advance according to the carbon emission index, if the power supply efficiency of the power battery is smaller than the standard power supply efficiency, batteries with poor power supply efficiency are timely recovered, and further carbon emission is reduced, on the other hand, according to power supply information of a power plant and the power supply quantity required by the power battery recovery device, the carbon emission generated by the power battery is calculated and recovered in a plurality of different time periods, then the corresponding time period when the carbon emission is lowest is selected from the plurality of different time periods, the power battery is recovered, and according to the geographic relation between a recovery mechanism and the power plant and the carbon emission caused by different time recovery is reasonably predicted according to the power supply plan of the power plant, and further the carbon emission is reduced in a proper time.
In addition, a heat recovery device is additionally arranged on the power battery recovery device to recover heat generated when the power battery is broken, and the air in the power battery recovery device is heated. The heat generated during crushing is used for heating the air in the power battery recovery device, so that the required electric quantity is further reduced when the power battery recovery device recovers, and the reduction of the required electric quantity means further reduction of carbon emission.
Drawings
Fig. 1 is a schematic flow chart of a low-carbon recovery method of a power battery based on residual electric quantity according to an embodiment of the invention;
Fig. 2 is a schematic structural diagram of a low-carbon recovery device for a power battery according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides a method for recovering low carbon from a power battery based on residual electric power, including:
s10, acquiring historical working condition data of the power battery.
And S11, confirming the power supply efficiency and the residual electric quantity of the power battery according to the historical working condition data.
And S12, if the carbon emission corresponding to the power supply efficiency is larger than a preset carbon emission index value, calculating heat generated when the power battery is broken and power supply quantity required by a power battery recovery device according to the power supply efficiency, the residual electric quantity of the battery and the battery material, wherein the power battery recovery device is internally provided with the heat recovery device which is used for recovering the heat generated when the power battery is broken and heating air in the power battery recovery device.
And S13, calculating the carbon emission generated by recovering the power battery in a plurality of different time periods according to the power supply information of the power plant and the power supply amount required by the power battery recovery device, wherein the carbon emission comprises the carbon emission generated when the power plant supplies power and the carbon emission generated when the power battery recovery device operates.
S14, selecting a time period corresponding to the lowest carbon emission from a plurality of different time periods, and recycling the power battery.
It should be noted that, the preset carbon emission index value in S11 is an index value formulated according to the national carbon emission standard, different power supply efficiencies of the battery correspond to different carbon emission amounts (which may be obtained according to multiple practical experiments), and if the current power supply efficiency of the battery corresponds to a carbon emission amount greater than the preset index value, it means that the current working condition of the battery does not conform to the carbon emission index.
In the embodiment of the invention, when the power battery is recovered, carbon emission is reduced from three points, namely, the first point is in S10-S11, whether the current working condition of the battery meets the carbon emission index is judged according to the power supply efficiency of the battery, the battery with the bad cycle life is timely recovered, and the carbon emission is reduced, the second point is in S12, a heat recovery device is arranged in the power battery recovery device and is used for recovering heat generated when the power battery is broken and heating air in the power battery recovery device, the power battery recovery device needs to consume electric quantity when the power battery is operated and is used for heating the air in the power battery, the heat recovery device can utilize the heat generated when the power battery is broken to heat the air in the power battery, so that the consumed electric quantity is reduced (the lower the electric consumption is, the lower the carbon emission of the power plant is), the structure of the power battery recovery device is optimized, and the carbon emission is reduced, and the third point is in S13-S14, the recovery mechanism is used for recovering the carbon emission is inevitably generated, the carbon emission is reasonably predicted according to the line condition between the recovery mechanism and the power plant, the plan, and the appropriate carbon emission is reduced, and the carbon emission is properly predicted.
In summary, the embodiment can effectively and accurately predict battery power supply according to the real-time working condition data of different parameters of the battery, select proper time to recycle the battery, calculate the influence of different time recycling on carbon emission, and select proper time to recycle the battery.
It should be noted that, the general power battery recovery device includes a workbench, a support leg, and a disassembling device, and the embodiment adds a heat recovery device on this basis. The heat recovery device is formed by vertically connecting a plurality of vacuum heat pipes in parallel. The heat pipe is a heat transfer element which realizes heat transfer by means of self-internal working liquid phase change, has the advantages of high heat conductivity, excellent isothermicity and the like, thereby ensuring the working efficiency of the heat recovery device formed by the heat pipe.
The method for confirming the power supply efficiency and the residual battery power of the power battery according to the historical working condition data specifically comprises the following steps:
According to the fluctuation value of the charging current, the fluctuation value of the discharging current, the discharging depth and the fluctuation time length in each charging and discharging period, respectively calculating the fluctuation parameters corresponding to each period;
Calculating the efficiency to be calibrated corresponding to each period according to the charging current value, the discharging current value, the input voltage, the output voltage and the charging and discharging time in each charging and discharging period;
Summing the fluctuation parameter and the efficiency to be calibrated of each period respectively to obtain period power supply efficiency corresponding to each period;
And calculating the residual electric quantity of the battery according to the charging current value, the discharging current value, the input voltage, the output voltage and the charging and discharging time in the last charging and discharging period.
The main purpose of this embodiment is to obtain two parameters, one is the power supply efficiency of the power battery and one is the residual battery power. The power supply efficiency of the power battery reflects the reliability degree and the carbon emission amount of the power battery to a certain extent, and the higher the power supply efficiency is, the higher the energy utilization rate is, the lower the carbon emission amount is, so that a judgment standard is required to be formulated for the power supply efficiency according to the target carbon emission amount before the embodiment of the invention is implemented. When the power supply efficiency is insufficient, the power battery needs to be recovered at this time, and the residual electric quantity of the battery can provide a part of electric energy for the power battery recovery device when the power battery is recovered (only the power battery to be recovered is connected into a bipolar mode according to a battery interface standard to utilize the part of electric energy, and details are not needed here), heat generated during battery crushing can be used for heating air inside the power battery recovery device through the heat recovery device, and the power battery recovery device needs to provide electric energy for an air heating auxiliary crushing battery by a power plant originally, so that the electric quantity needed during power battery recovery can be further reduced by utilizing the heat generated during battery crushing.
In addition, the periodic power supply efficiency calculation formula is carried out, the power supply efficiency of the power battery is comprehensively investigated in a plurality of periods, fluctuation parameters are introduced to minimize error influence caused by the state fluctuation of the power battery observed during measurement, and the accuracy of calculating the power supply efficiency is ensured.
In an exemplary embodiment, when calculating the fluctuation parameter corresponding to each period according to the fluctuation value of the charging current, the fluctuation value of the discharging current, the depth of discharge and the fluctuation time length in each charging and discharging period, the calculation manner of the fluctuation parameter is as follows:
wherein W is a fluctuation parameter, I w is a fluctuation value of charging current in a period, U w is a fluctuation value of discharging current in a period, C is a depth of discharge in a period, t w is a fluctuation duration, AndIs a preset constant factor.
For example, if the power supply efficiency does not meet the carbon emission index, calculating, according to the power supply efficiency, the battery residual electric quantity and the battery material, the amount of power supply required by the power battery recovery device and the amount of heat generated when the power battery is broken, including:
Standard power supply efficiency is formulated according to the carbon emission index;
if the power supply efficiency is smaller than the standard power supply efficiency, determining the aging degree according to the power supply efficiency;
And calculating the heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the composition of the battery material, the weight of the battery material and the ageing degree by combining a mass energy heat release meter.
The combined mass energy heat release meter is obtained by a battery recycling plant through a plurality of production tests of a power battery recycling device.
In general, the energy release meter includes various heat conditions generated when a unit mass of material breaks down. If the step of measuring and generating heat is to be optimized, the parameter of the battery model can be considered to be also put into the step, for example, the step of calculating the heat generated when the unit mass of various common battery models is broken and checking the battery material composition according to the mapping relation between the unit mass of the battery model and the heat can be omitted.
Illustratively, the calculating the heat generated when the power battery breaks and the power supply amount required by the power battery recovery device according to the composition of the battery material, the weight of the battery material and the aging degree by combining a mass energy heat release meter specifically comprises:
according to the historical operation data of the power battery recovery device, confirming the required power supply quantity when various materials with unit weight are crushed;
Analyzing the composition and the weight of the battery materials to obtain the weight corresponding to each material in the power battery;
And calculating the heat generated when the power battery is broken and the power supply quantity required by the power battery recovery device according to the power supply quantity required by breaking various materials with unit weight and the weight corresponding to each material and combining the ageing degree.
When the aging degree of the power battery is not considered, the heat generated when the power battery is broken can be obtained by inquiring a mass energy heat release table according to the weight corresponding to each material, and the heat is regarded as theoretical heat generation. However, in general, when the power battery is recovered, aging is performed to different degrees, so that the heat generation amount and the theoretical heat generation amount change, and an aging factor needs to be set according to the aging degree, and the product value of the aging factor and the theoretical heat generation amount is used as the heat generated during crushing.
The historical operation data in this embodiment refers to the daily electricity consumption of the power battery recovery device for each day in the past year.
Illustratively, the calculating, according to the power supply information of the power plant and the power supply amount required by the power battery recycling device, the carbon emission amount generated by the power battery during a plurality of different time periods specifically includes:
Calculating a line transmissibility according to line distribution between a power plant and the power battery recovery device;
And calculating the carbon emission generated by the power battery in a plurality of different time periods according to the power supply quantity required by the power battery recovery device, the line transmissibility and the electricity generation carbon emission of the unit electric quantity generated by the power distribution network in each time period in the power supply information of the power plant.
The time periods in this embodiment refer to different time periods in one day. Generally, a day will be divided into 12 equal-length time periods, each of which is two hours in duration.
Illustratively, the calculating the power cell recovers the carbon emissions generated by the power cell over a plurality of different time periods is specifically:
Carbon emission generated by the recovery power battery= (electricity generation carbon emission amount x power supply amount required by the power battery recovery device)/(line transmissibility).
It is to be noted that the above-mentioned line transmissibility is related to a connection structure between the distribution nodes of the distribution network and the corresponding charging devices, and electric energy meters are required to be respectively set to measure electric energy at two ends. The carbon emission of the distribution network is the carbon emission caused by the power generation unit of the distribution network, and the carbon emission mainly comes from thermal power generation.
Compared with the prior art, the low-carbon recovery method for the power battery based on the residual electric quantity provided by the embodiment of the invention has the advantages that firstly, standard power supply efficiency is formulated in advance according to the carbon emission index, if the power supply efficiency of the power battery is smaller than the standard power supply efficiency, batteries with poor power supply efficiency of the battery are timely recovered, so that the carbon emission is reduced, on the other hand, according to power supply information of a power plant and the power supply quantity required by a power battery recovery device, the carbon emission generated by the power battery is calculated in a plurality of different time periods, then the corresponding time period when the carbon emission is lowest is selected from the plurality of different time periods, the power battery is recovered, and the carbon emission caused by different time recovery is reasonably predicted according to the geographic relation between a recovery mechanism and the power plant and the power supply plan of the power plant, so that the carbon emission is reduced in a proper time is selected.
In addition, a heat recovery device is additionally arranged on the power battery recovery device to recover heat generated when the power battery is broken, and the air in the power battery recovery device is heated. The heat generated during crushing is used for heating the air in the power battery recovery device, so that the required electric quantity is further reduced when the power battery recovery device recovers, and the reduction of the required electric quantity means further reduction of carbon emission.
Referring to fig. 2, a second aspect of the embodiment of the present application provides a low-carbon recovery device for a power battery based on residual electric power, which includes a data acquisition module 20, a battery confirmation module 21, an electric power supply amount calculation module 22, a carbon emission calculation module 23, and a recovery module 24.
The data acquisition module 20 is configured to acquire historical operating condition data of the power battery.
And the battery confirmation module 21 is used for confirming the power supply efficiency and the residual electric quantity of the power battery according to the historical working condition data.
And the power supply amount calculation module 22 is configured to calculate, according to the power supply efficiency, the battery residual electric quantity and the battery material, an amount of power supply required by the power battery recovery device and heat generated when the power battery is broken, if the amount of carbon emission corresponding to the power supply efficiency is greater than a preset carbon emission index value.
And a carbon emission calculation module 23 for calculating the carbon emission amount generated by the power battery during a plurality of different time periods according to the power supply information of the power plant and the power supply amount required by the power battery recovery device, wherein the carbon emission amount comprises the carbon emission amount generated when the power plant supplies power and the carbon emission amount generated when the power battery recovery device operates.
And the recovery module 24 is used for recovering the power battery from a plurality of different time periods when the carbon emission is lowest.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the positioning device described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
Compared with the prior art, the low-carbon recovery device for the power battery based on the residual electric quantity has the advantages that firstly, standard power supply efficiency is formulated in advance according to carbon emission indexes, if the power supply efficiency of the power battery is smaller than the standard power supply efficiency, batteries with poor power supply efficiency are timely recovered, and carbon emission is further reduced, on the other hand, according to power supply information of a power plant and the power supply quantity required by the power battery recovery device, the carbon emission generated by the power battery is calculated in a plurality of different time periods, then the corresponding time period when the carbon emission is lowest is selected from the plurality of different time periods, the power battery is recovered, and according to the geographic relation between a recovery mechanism and the power plant and the power supply plan of the power plant, the carbon emission caused by different time recovery is reasonably predicted, and further the carbon emission is reduced in a proper time is selected.
In addition, a heat recovery device is additionally arranged on the power battery recovery device to recover heat generated when the power battery is broken, and the air in the power battery recovery device is heated. The heat generated during crushing is used for heating the air in the power battery recovery device, so that the required electric quantity is further reduced when the power battery recovery device recovers, and the reduction of the required electric quantity means further reduction of carbon emission.
A third aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, where the computer program, when executed, controls a device in which the computer-readable storage medium is located to perform the method for recovering low carbon from a power battery based on residual electric power as described above.
The computer device can be a smart phone, a tablet computer, a desktop computer, a cloud server and other computing devices. The computer device may include, but is not limited to, a processor, a memory. Those skilled in the art will appreciate that computer devices may include input-output devices, network access devices, and the like.
The Processor may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may in some embodiments be an internal storage unit of the computer device, such as a hard disk or a memory of the computer device. The memory may in other embodiments also be an external storage device of the computer device, such as a plug-in hard disk provided on the computer device, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), etc. Further, the memory may also include both internal storage units and external storage devices of the computer device. The memory is used to store an operating system, application programs, boot loader (BootLoader), data, and other programs, etc., such as program code for the computer program, etc. The memory may also be used to temporarily store data that has been output or is to be output.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
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| CN114139877A (en) * | 2021-11-05 | 2022-03-04 | 广东邦普循环科技有限公司 | Carbon emission accounting method, device and system for waste battery recovery |
| CN115618998A (en) * | 2022-09-16 | 2023-01-17 | 广东邦普循环科技有限公司 | Power battery recovery amount prediction method and device based on carbon emission |
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