A Method and System for Controlling Automotive Power Batteries Considering Carbon Emissions

Abstract

The present invention discloses a control method and system for an automotive power battery considering carbon emissions. The method includes obtaining the charging service record and the power battery status of a target vehicle; according to the charging service record, confirming the charging device, charging time period, and charging amount corresponding to each use of the charging service by the target vehicle within a preset time period, and further obtaining the equivalent carbon emissions of the distribution network for completing a unit of charging amount at different charging time periods for all charging devices; selecting the charging time period corresponding to the minimum equivalent carbon emissions of the distribution network as the optimal charging time period for the device; if the target vehicle passes by the charging device during the optimal charging time period of the charging device and the remaining battery power displayed by the power battery status is less than the first threshold, a charging instruction is issued to the target vehicle. By using the present invention, the charging time of the power battery when the main power supply mode of the power supply network is thermal power supply is reduced, thereby reducing carbon emissions.

Description

Technical Field

[0001] The present invention relates to the field of automotive power battery control, and particularly to a method and system for controlling automotive power batteries considering carbon emissions. Background Art

[0002] Carbon emissions in the transportation sector in China account for about 10% of the total carbon emissions in the country, and vehicle carbon emissions are the main part. New energy vehicles are an important means to help reduce carbon emissions in the transportation sector, but this does not mean that the new energy vehicle industry does not need to reduce carbon emissions. In fact, the carbon emissions during the production process of current electric vehicles are higher than those of traditional fuel vehicles. The carbon emissions generated during the manufacturing process of power batteries account for a relatively large proportion, and most of the electrical energy consumed during the operation of electric vehicles also comes from thermal power generation. Therefore, electric vehicles are also involved in carbon emissions during production and use.

[0003] From the perspective of in-vehicle power batteries, excessive charging and excessive discharging will both affect the battery life. If the in-vehicle battery is at the end of its life, the electricity utilization rate will drop significantly, increasing carbon emissions and causing waste of grid electrical energy at the same time. Summary of the Invention

[0004] An embodiment of the present invention provides a method and system for controlling automotive power batteries considering carbon emissions, which reduces the charging time of power batteries when the main power supply mode of the power grid is thermal power supply, thereby reducing carbon emissions.

[0005] To achieve the above object, the first aspect of the embodiments of the present application provides a method for controlling automotive power batteries considering carbon emissions, including:

[0006] Obtain the charging service record and the state of the power battery of the target vehicle;

[0007] According to the charging service record, confirm the charging device, charging period, and charging amount corresponding to each time the target vehicle uses the charging service within a preset time period; the charging period refers to the time period when the target vehicle uses the charging service, and the length of each time period is equal;

[0008] According to the charging device, charging period, and charging amount corresponding to each time the target vehicle uses the charging service, calculate the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device under the charging period, and then obtain the carbon emission conversion amount of the distribution network per unit of charging amount completed by all charging devices under different charging periods; the carbon emission conversion amount refers to the carbon emissions caused by the power generation equipment when the distribution network provides electrical energy for the charging device;

[0009] Compare the carbon emission conversion amounts of the distribution network per unit of charging amount completed by each charging device under different charging periods, and select the charging period corresponding to the minimum carbon emission conversion amount of the distribution network as the optimal charging period for the device;

[0010] If the target vehicle passes by the charging device within the optimal charging time period of the charging device, and the remaining power of the power battery indicates that it is less than the first threshold, a charging instruction is issued to the target vehicle.

[0011] In a possible implementation manner of the first aspect, it further includes:

[0012] If the remaining power of the power battery indicates that it is less than the second threshold, the nearest charging device is allocated to the target vehicle and a charging instruction is issued to the target vehicle.

[0013] After obtaining the charging service record and the state of the power battery of the target vehicle in a possible implementation manner of the first aspect, it further includes: obtaining a driving record.

[0014] After obtaining the driving record in a possible implementation manner of the first aspect, it further includes:

[0015] According to the driving record, evaluate the driving complexity of the target vehicle in each driving time period;

[0016] Obtain the weather of the target vehicle in each driving time period and evaluate the weather factors;

[0017] According to the state of the power battery, calculate the power consumption per unit distance;

[0018] According to the driving complexity, weather factors and power consumption per unit distance, evaluate the degree of power battery loss.

[0019] In a possible implementation manner of the first aspect, the evaluation of the degree of power battery loss is specifically:

[0020] If C is greater than or equal to C0, then If C is less than C0, then L = 0; where L is the degree of power battery loss, C is the power consumption per unit distance, C0 is a preset power consumption benchmark, is the driving complexity, and Ω is the weather factor.

[0021] In a possible implementation manner of the first aspect, after evaluating the degree of power battery loss according to the driving complexity, weather factors and power consumption per unit distance, it further includes:

[0022] If the degree of power battery loss is greater than the loss threshold, a battery replacement instruction is issued to the target vehicle.

[0023] In a possible implementation manner of the first aspect, calculating the carbon emission conversion amount per unit of charge completed by the corresponding charging device during the charging period based on the charging device, charging period, and charging amount corresponding to each use of the charging service by the target vehicle, and then obtaining the carbon emission conversion amount of the distribution network per unit of charge completed by all charging devices during different charging periods, specifically including:

[0024] Calculating the line transfer rate according to the power supply amount provided by the distribution network for the corresponding charging device and the charging amount of the target vehicle;

[0025] Calculating the carbon emission conversion amount per unit of charge completed by the corresponding charging device during the charging period according to the charging amount of the corresponding target vehicle, the line transfer rate, and the carbon emission amount of the distribution network during the charging period.

[0026] In a possible implementation manner of the first aspect, calculating the carbon emission conversion amount per unit of charge completed by the corresponding charging device during the charging period is specifically:

[0027] Carbon emission conversion amount per unit of charge = (Carbon emission amount of the distribution network) / (Line transfer rate * Charging amount).

[0028] A second aspect of the embodiments of the present application provides an automotive power battery management and control system considering carbon emissions, including a battery management and control system applying the automotive power battery management and control method considering carbon emissions as described above, multiple charging devices, a security gateway, and a router;

[0029] Among them, the battery management and control system is connected to the security gateway, and each charging device is connected to the security gateway through a router; after receiving a charging instruction or a battery replacement instruction from the battery management and control system, the charging device sends a corresponding prompt message to the target vehicle.

[0030] In a possible implementation manner of the second aspect, the multiple charging devices are all charging piles.

[0031] Compared with the prior art, for an automotive power battery management and control method and system considering carbon emissions provided by the embodiments of the present invention, since the carbon emission conversion amount of the distribution network means the carbon emission amount caused by the power generation device when the distribution network provides electric energy for the charging device, by calculating and comparing the carbon emission conversion amount of the distribution network per unit of charge completed by each charging device during different charging periods, and formulating an automotive power battery charging plan for the user based on this, try to avoid the time period when the main power supply method of the power supply network is thermal power supply to charge the electric vehicle, thereby effectively reducing carbon emissions.

[0032] In addition, this solution timely makes replacement or warning prompts for the power battery at the end of its life according to the degree of battery loss of the vehicle, ensuring the stability of vehicle driving while reducing carbon emissions. Brief Description of the Drawings

[0033] Figure 1 FIG. is a schematic flowchart of a method for controlling an automotive power battery considering carbon emissions provided by an embodiment of the present invention;

[0034] Figure 2 FIG. is a schematic structural diagram of a system for controlling an automotive power battery considering carbon emissions provided by an embodiment of the present invention. Detailed Embodiments

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1 , an embodiment of the present invention provides a method for controlling an automotive power battery considering carbon emissions, including:

[0037] S10. Obtain the charging service record and the state of the power battery of the target vehicle.

[0038] S11. According to the charging service record, confirm the charging device, charging period, and charging amount corresponding to each use of the charging service by the target vehicle within a preset time period; the charging period refers to the time period when the target vehicle uses the charging service, and the length of each time period is equal.

[0039] S12. According to the charging device, charging period, and charging amount corresponding to each use of the charging service by the target vehicle, calculate the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period, and then obtain the carbon emission conversion amount of the distribution network per unit of charging amount completed by all charging devices during different charging periods; the carbon emission conversion amount refers to the carbon emissions caused by the power generation equipment when the distribution network provides electric energy for the charging device.

[0040] S13. Compare the carbon emission conversion amounts of the distribution network per unit of charging amount completed by each charging device during different charging periods, and select the charging period corresponding to the minimum carbon emission conversion amount of the distribution network as the optimal charging period for the device.

[0041] S14. If the target vehicle passes by the charging device during the optimal charging period of the device and the state of the power battery shows that the remaining power is less than the first threshold, issue a charging instruction to the target vehicle.

[0042] At present, the charging methods of electric vehicles are generally divided into unordered charging and ordered charging. Unordered charging means that electric vehicles are charged according to the preferences of users, and the access time and method to the power grid are not managed. Since most electric vehicle users charge at the same time, this charging method is likely to generate a charging peak period, which will affect the stability of the power grid. Ordered charging means that the charging behaviors of electric vehicles connected in a certain area are overall planned, and the charging scheduling is carried out with the optimization goal of reducing the load variance of the power grid. The method provided in this embodiment is essentially a charging scheduling method.

[0043] In the embodiment of the present invention, the battery state and the charging and discharging service usage information of the electric vehicle participating in the charging and discharging service of the distribution network are analyzed to obtain the charging device, charging period and charging amount corresponding to the target vehicle each time it uses the charging service, and then the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period is calculated.

[0044] In S11, the charging records of the target vehicle when using each charging device are obtained from the charging service records. Recording the time and charging amount of using the charging device each time is to facilitate the analysis of the charging habits of the target vehicle. Because users generally choose the charging devices in their own areas to charge the vehicle, the data obtained in S11 can reflect the usage frequency and usage duration of users for each charging device. Thus, when formulating a plan for users in S13 - S14 based on this type of data, the daily charging habits of users can be taken into consideration to improve the user experience.

[0045] It should be noted that the first threshold mentioned in S14 is a preset threshold. Generally, the value of the first threshold will be greater than 1 / 3 of the maximum storage capacity of the target vehicle. Such a setting is because the current charging facilities are not yet perfect. Reminding users to charge when the remaining power of the target vehicle is one - third can effectively guarantee the long - term driving needs of users.

[0046] Compared with the prior art, for a method for controlling an automotive power battery considering carbon emissions provided by the embodiment of the present invention, since the carbon emission conversion amount of the distribution network means the carbon emissions caused by the power generation equipment when the distribution network provides electric energy for the charging device, by calculating and comparing the carbon emission conversion amounts per unit of charging amount of each charging device at different charging periods, and formulating a charging plan for the automotive power battery for users based on this, charging the electric vehicle as much as possible when the main power supply method of the power supply network is not thermal power supply, and thus effectively reducing carbon emissions.

[0047] In addition, this solution can timely make replacement or warning prompts for power batteries at the end of their service life according to the degree of battery loss of the vehicle, ensuring the stability of vehicle driving while reducing carbon emissions.

[0048] Exemplarily, the method for controlling an automotive power battery further includes:

[0049] S15. If the remaining power displayed by the power battery is less than the second threshold, allocate the nearest charging device to the target vehicle and issue a charging instruction to the target vehicle.

[0050] Generally speaking, the value of the second threshold is 1 / 6 of the maximum power storage of the target vehicle. At this time, if the user uses the target vehicle for long-distance driving, there is a high possibility of power outage during the journey. To avoid such things from happening, when the remaining power displayed by the power battery is less than the second threshold, it is necessary to remind the user to charge more frequently.

[0051] Exemplarily, S12 specifically includes:

[0052] Calculate the line transfer rate according to the power supply provided by the distribution network to the corresponding charging device and the charging amount of the target vehicle.

[0053] Calculate the carbon emission reduction amount per unit of charging amount of the corresponding charging device during the charging period according to the charging amount of the corresponding target vehicle, the line transfer rate, and the carbon emission of the distribution network during the charging period.

[0054] Exemplarily, the calculation of the carbon emission reduction amount per unit of charging amount of the corresponding charging device during the charging period is specifically:

[0055] Carbon emission reduction amount per unit of charging amount = (Carbon emission of the distribution network) / (Line transfer rate * Charging amount).

[0056] As renewable energy such as wind energy and solar energy is incorporated into the power grid, the source of grid energy is random and uncontrollable. Electric vehicles incorporated into the power grid when the "green electricity" is high have much lower carbon emissions than when the "thermal power" is generated. And according to the size of the carbon emission reduction amount per unit of charging amount, it can be clearly seen the carbon emission degree of the charging device when completing per unit of charging amount at different charging periods. Then, sort according to the carbon emission reduction amount per unit of charging amount, and select the charging period corresponding to the minimum value of the carbon emission reduction amount per unit of charging amount of each charging device. Let the target vehicle use the corresponding charging device for charging as much as possible during this period, thereby reducing the carbon emissions of the distribution network.

[0057] It should be noted that the above line transfer rate is related to the connection structure between the distribution network power distribution node and the corresponding charging device, and it is necessary to set electric energy meters to measure the electric energy at both ends respectively. The carbon emission of the distribution network is the carbon emission caused by the distribution network generating unit power, and the carbon emission mainly comes from thermal power generation.

[0058] Exemplarily, after S10, it further includes:

[0059] Obtain the driving record.

[0060] Evaluate the driving complexity of the target vehicle during each driving time period according to the driving record;

[0061] Obtain the weather of the target vehicle during each driving time period and evaluate the weather factor;

[0062] Calculate the power consumption per unit distance according to the state of the power battery;

[0063] Evaluate the degree of power battery loss according to the driving complexity, weather factor and power consumption per unit distance.

[0064] Exemplarily, the evaluation of the degree of power battery loss is specifically as follows:

[0065] If C is greater than or equal to C0, then If C is less than C0, then L = 0; where L is the degree of power battery loss, C is the power consumption per unit distance, and C0 is a preset power consumption benchmark, is the driving complexity, and Ω is the weather factor.

[0066] Generally speaking, The value range of is (0, 1], the value range of Ω is [0.1, 1], Ω takes 0.3 in thick fog weather, 0.1 in hail weather, and 1 in sunny weather.

[0067] Exemplarily, after evaluating the degree of power battery loss according to the driving complexity, weather factor and power consumption per unit distance, it further includes:

[0068] If the degree of power battery loss is greater than the loss threshold, issue a battery replacement instruction to the target vehicle.

[0069] The embodiment of the present invention provides a method for replacing a power battery. This method can evaluate the state level of the power battery based on the driving record, evaluate the degree of loss of the power battery based on the battery charge and discharge data, and finally select the battery replacement strategy according to the obtained loss degree rating.

[0070] Compared with the prior art, for the method for controlling an automotive power battery considering carbon emissions provided by the embodiment of the present invention, since the carbon emission conversion amount of the distribution network means the carbon emissions caused by the power generation equipment when the distribution network provides electric energy for the charging equipment, by calculating and comparing the carbon emission conversion amounts of the distribution network for each charging equipment to complete a unit of charging amount at different charging times, and formulating a charging plan for the automotive power battery for the user based on this, and trying to avoid charging the electric vehicle when the main power supply method of the power supply network is thermal power supply, thereby effectively reducing carbon emissions.

[0071] In addition, this solution makes timely replacement or warning prompts for power batteries at the end of their life cycle based on the degree of loss of the power batteries of the vehicle, ensuring the stability of vehicle driving while reducing carbon emissions.

[0072] See Figure 2 , an embodiment of the present application provides a vehicle power battery management and control system considering carbon emissions, including a battery management and control system 20 that applies the vehicle power battery management and control method considering carbon emissions as described above, a plurality of charging devices 30, a security gateway 21, and a router 31.

[0073] Among them, the battery management and control system 20 is connected to the security gateway 21, and each charging device 30 is connected to the security gateway 21 through the router 31; after receiving a charging instruction or a battery replacement instruction from the battery management and control system 20, the charging device 30 sends a corresponding prompt message to the target vehicle.

[0074] Exemplarily, the plurality of charging devices 30 are all charging piles.

[0075] A charging operation management platform can be established on the battery management and control system 20 to provide charging operation management services for new energy electric vehicle charging pile operators for charging stations / piles, new energy vehicle owners, and partners. On the premise of having basic charging business management, functional modules such as sub-operators, promotional activities, terminal management, financial settlement, data statistics, refund, transfer, platform access providers, and big data analysis can be expanded, leading the charging operation management field of new energy electric vehicle facilities.

[0076] The operation data of the battery management and control system 20 is obtained by analyzing from the security gateway 21: the operation data is obtained by decrypting and analyzing the charging pile working data received by the security gateway 21 from the terminal 31. By combining the service information provided by the charging pile for users, the battery management and control system 20 can enable the charging operation management platform to obtain the working status of the charging pile in real time, accurately, and safely and carry out intelligent comprehensive services based on the charging pile based on this.

[0077] Compared with the prior art, for a vehicle power battery management and control system considering carbon emissions provided by an embodiment of the present invention, since the carbon emission equivalent of the distribution network means the carbon emissions caused by the power generation equipment when the distribution network provides electric energy for the charging device, by calculating and comparing the carbon emission equivalents of the distribution network for each charging device to complete a unit of charging amount at different charging times, and based on this, formulating a vehicle power battery charging plan for users, and trying to avoid charging electric vehicles when the main power supply method of the power supply network is thermal power supply, thereby effectively reducing carbon emissions.

[0078] In addition, this solution can timely replace or give a warning prompt for the power battery at the end of its life according to the degree of loss of the power battery of the vehicle, ensuring the stability of vehicle driving while reducing carbon emissions.

[0079] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A control method for automotive power batteries considering carbon emissions, characterized in that Including: Obtaining the charging service record and the power battery status of the target vehicle; According to the charging service record, confirming the charging device, charging period, and charging amount corresponding to each time the target vehicle uses the charging service within a preset time period; the charging period refers to the time period when the target vehicle uses the charging service, and the length of each time period is equal; According to the charging device, charging period, and charging amount corresponding to each time the target vehicle uses the charging service, calculating the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period, and then obtaining the distribution network carbon emission conversion amount per unit of charging amount completed by all charging devices under different charging periods; the carbon emission conversion amount refers to the carbon emissions caused by the power generation equipment when the distribution network provides electrical energy for the charging device; Comparing the distribution network carbon emission conversion amounts per unit of charging amount completed by each charging device under different charging periods, and selecting the charging period corresponding to the minimum distribution network carbon emission conversion amount as the optimal charging period of the device; If the target vehicle passes by the charging device during the optimal charging period of the device, and the power battery status shows that the remaining power is less than the first threshold, issuing a charging instruction to the target vehicle.

2. The method for controlling an automotive power battery considering carbon emissions according to claim 1, wherein Also including: If the power battery status shows that the remaining power is less than the second threshold, allocating the nearest charging device to the target vehicle and issuing a charging instruction to the target vehicle.

3. The method for controlling an automotive power battery considering carbon emissions according to claim 2, wherein, After obtaining the charging service record and the power battery status of the target vehicle, it also includes: obtaining the driving record.

4. The method for controlling an automotive power battery considering carbon emissions according to claim 3, wherein, After obtaining the driving record, it also includes: Evaluating the driving complexity of the target vehicle during each driving time period according to the driving record; Obtaining the weather of the target vehicle during each driving time period and evaluating the weather factors; Calculating the power consumption per unit distance according to the power battery status; Evaluating the degree of power battery loss according to the driving complexity, weather factors, and power consumption per unit distance.

5. The method for controlling an automotive power battery considering carbon emissions according to claim 4, characterized in that, The evaluation of the degree of power battery loss is specifically: If C is greater than or equal to C0, then If C is less than C0, then L = 0; where L is the degree of power battery loss, C is the power consumption per unit distance, and C0 is the preset power consumption benchmark. is the driving complexity, and Ω is the weather factor.

6. The method for controlling an automotive power battery considering carbon emissions according to claim 4, characterized in that, After evaluating the degree of power battery loss according to the driving complexity, weather factors, and power consumption per unit distance, it also includes: If the degree of power battery loss is greater than the loss threshold, issuing a battery replacement instruction to the target vehicle.

7. The method for controlling an automotive power battery considering carbon emissions according to claim 1, wherein, The calculation of the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period, and then obtaining the distribution network carbon emission conversion amount per unit of charging amount completed by all charging devices under different charging periods, specifically includes: Calculating the line transmission rate according to the power supply amount provided by the distribution network for the corresponding charging device and the charging amount of the target vehicle; Calculating the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period according to the charging amount of the corresponding target vehicle, the line transmission rate, and the carbon emissions of the distribution network during the charging period.

8. The method for controlling an automotive power battery considering carbon emissions according to claim 7, wherein The calculation of the carbon emission conversion amount per unit of charging amount completed by the corresponding charging device during the charging period is specifically: Carbon emission conversion amount per unit of charging amount = (carbon emissions of the distribution network) / (line transmission rate * charging amount).

9. An automotive power battery management and control system considering carbon emissions, characterized in that, A battery management system, a plurality of charging devices, a security gateway, and a router that apply the method for controlling an automotive power battery considering carbon emissions according to any one of claims 1-8; Wherein, the battery management system is connected to the security gateway, and each charging device is connected to the security gateway through a router; after receiving a charging instruction or a battery replacement instruction from the battery management system, the charging device sends a corresponding prompt message to the target vehicle.

10. The vehicle power battery management and control system considering carbon emissions according to claim 9, characterized in that, The plurality of charging devices are all charging piles.

Images