An electric vehicle charging and discharging control method, device, equipment and storage medium

Abstract

The application relates to the technical field of battery management, and discloses an electric vehicle charging and discharging control method, device, equipment and storage medium, the method comprises the following steps: in response to a power battery charging / discharging demand adjustment instruction, sending adjustable charging parameters / discharging parameters and their adjustable ranges to a user side and displaying; receiving an adjustment instruction of one or more charging parameters / discharging parameters, the adjustment instruction comprises a to-be-adjusted parameter and an adjustment value; prompting the influence of one or more adjustment values on the service life of a battery; judging whether the adjustment value meets the requirement according to the adjustable range of the to-be-adjusted parameter; if the adjustment value meets the requirement, adjusting the to-be-adjusted parameter according to the adjustment value, and performing charging / discharging control. The application enables users to adjust charging / discharging parameters on demand, and can improve the service life of a battery under the condition of meeting the daily power demand of users.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of battery management, and particularly relates to a charging and discharging control method, device and equipment for an electric vehicle and a storage medium. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] With the development of the new energy industry, a power battery system provides power for a new energy vehicle, and its service life is concerned by the industry and terminal users. The current solidification charging and discharging window, fast charging rate and discharging rate are designed to meet the extreme needs of users, or are designed based on the battery performance under the premise that the battery meets the use safety. However, the iteration of the current technology and a large amount of test data and vehicle operation data of the battery system show that the closer the upper and lower limit voltages of charging and discharging are to the limit, the greater the influence on the cycle life is, and the higher the charging and discharging rate is, the greater the influence on the life is.

[0004] However, most non-operating users may not need or use their extreme needs frequently, and therefore, the uniform charging and discharging cutoff parameter setting for the vehicle power battery is not conducive to the service life of the battery. SUMMARY

[0005] In order to effectively prolong the service life of the power battery system, the present application provides a charging and discharging control method, device, equipment and storage medium for an electric vehicle. By customizing the charging / discharging parameters, the charging and discharging of the power battery can prolong the service life of the power battery system on the basis of meeting the user's use habit.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application provides a charging and discharging control method for an electric vehicle, comprising the following steps:

[0007] In response to a power battery charging / discharging demand adjustment instruction, sending and displaying adjustable charging / discharging parameters and their adjustable ranges to the user side;

[0008] Receiving an adjustment instruction of one or more charging / discharging parameters, the adjustment instruction comprising an adjustment parameter and an adjustment value; prompting the influence of one or more adjustment values on the service life of the battery;

[0009] According to the adjustable range of the adjustment parameter, judging whether the adjustment value meets the requirement or not;

[0010] If the adjustment value meets the requirement, adjusting the adjustment parameter according to the adjustment value and performing charging / discharging control.

[0011] In some embodiments, the charging parameters include a charging depth parameter and a fast charging rate parameter; the discharging parameters include a discharging depth parameter and a discharging rate parameter; and the discharging rate parameter further includes a continuous discharging rate and a peak discharging rate.

[0012] In some embodiments, the charging parameters and the discharging parameters can be set at any time.

[0013] In some embodiments, if the parameter to be adjusted includes the charging depth, the charging current of the battery is collected in real time during the next charging process, the real-time charging capacity is integrated, the current remaining capacity is calculated in combination with the last discharging depth, and the remaining capacity is fed back to the user side.

[0014] In some embodiments, if the parameter to be adjusted includes the discharging depth, the discharging current is collected in real time during the use of the vehicle, the current used capacity is integrated, the current remaining capacity is calculated in combination with the remaining capacity at the end of the last charging, and the current remaining capacity is updated to the user side in real time.

[0015] In some embodiments, the destination and the planned route are further obtained, and the remaining capacity is further monitored in real time during the driving of the vehicle, whether it is sufficient to reach the destination is judged, if not, the discharging depth adjustment suggestion is given according to the required capacity difference.

[0016] The second aspect of the present application provides a charging and discharging control device for an electric vehicle, comprising:

[0017] A demand adjustment confirmation module configured to send and display the adjustable charging parameters / discharge parameters and their adjustable ranges to the user side in response to the power battery charging / discharging demand adjustment instruction;

[0018] An adjustment instruction acquisition module configured to receive the adjustment instruction of one or more charging parameters / discharge parameters, the adjustment instruction including the parameter to be adjusted and the adjustment value; and prompt the influence of one or more adjustment values on the service life of the battery;

[0019] A parameter adjustment verification module configured to judge whether the adjustment value meets the requirements according to the adjustable range of the parameter to be adjusted;

[0020] A charging / discharging control module configured to adjust the parameter to be adjusted according to the adjustment value if the adjustment value meets the requirements, and perform charging / discharging control.

[0021] The third aspect of the present application provides an electronic device, characterized by comprising a processor and a memory, the memory having computer instructions stored thereon, when the computer instructions are executed by the processor, the electronic device executes the method.

[0022] The fourth aspect of the present application provides a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the method.

[0023] The fifth aspect of the present application provides a computer program product comprising computer executable instructions, wherein the computer executable instructions, when executed by a processor, implement the method.

[0024] The above one or more technical solutions have the following beneficial effects:

[0025] By customizing the charging / discharging parameters, the user can adjust the charging / discharging parameters of the power battery according to the actual needs according to the user's use habits of the power battery, including charging frequency, charging time demand, and driving demand such as vehicle speed, and guide the influence of each parameter on the service life of the battery, which can improve the service life of the battery while meeting the user's daily power demand. In addition, when the user has extreme needs, it can also be adjusted on demand at any time, enhancing the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0027] Figure 1 The flow chart of the electric vehicle charging / discharging control method in one or more embodiments of the present application is shown in the figure.

[0028] Figure 2 The overall control logic diagram of the electric vehicle charging / discharging control method in one or more embodiments of the present application is shown in the figure.

[0029] Figure 3 The schematic diagram of the electric vehicle charging / discharging parameter adjustment in one or more embodiments of the present application is shown in the figure.

[0030] Figure 4 The module architecture diagram of the electric vehicle charging / discharging control device in one or more embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to more thoroughly and completely understand the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes, and are not intended to limit the scope of protection of the present application.

[0032] In the description of the embodiments of this application, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on".

[0033] One or more embodiments of the present invention provide a user-interactive-based method for controlling the charging and discharging of electric vehicles. By customizing the charging / discharging parameters, the charging and discharging of the power battery can be optimized to meet user habits and extend the lifespan of the power battery system. Simultaneously, it helps guide users to develop good power battery usage habits.

[0034] For example, the implementation environment of the method is a battery management system and a vehicle controller. The battery management system is connected to the vehicle controller (VCU) via a CAN bus network. The vehicle controller is connected to the in-vehicle multimedia system via wireless or CAN bus. The in-vehicle multimedia system can receive user input adjustment commands for charging and discharging, and send them to the battery management system via the vehicle controller to execute the charging and discharging control. Furthermore, the in-vehicle multimedia system also establishes a communication connection with a user terminal, the connection method of which can be wireless or wired, without specific limitations. Through the user terminal, the user can input adjustment commands for charging and discharging, which are sent to the vehicle controller via the in-vehicle multimedia system, and then to the battery management system to execute the charging and discharging control. The term "user side" as used below should be understood as all possible devices that the user can receive messages from, such as the in-vehicle multimedia screen, dashboard, or user terminals such as mobile phones connected to the in-vehicle multimedia screen.

[0035] like Figure 1 As shown, the electric vehicle charging and discharging control method based on user interaction specifically includes the following steps:

[0036] Step 1: In response to the power battery charging / discharging demand adjustment command, send the adjustable charging / discharging parameters and their adjustable range to the user side and display them;

[0037] Step 2: Receive adjustment instructions for one or more charging / discharging parameters, the adjustment instructions including the parameter to be adjusted and the adjustment value; provide prompts regarding the impact of one or more of the adjustment values ​​on battery life;

[0038] Step 3: Based on the adjustable range of the parameter to be adjusted, determine whether the adjustment value meets the requirements. If yes, proceed to step 4. If no, send a message to the user that the adjustment cannot be made as needed.

[0039] Step 4: Adjust the parameter to be adjusted according to the adjustment value to perform charging / discharging control.

[0040] The charging parameters in step 1 include a charging depth parameter and a fast charging rate parameter, and the discharging parameters include a discharging depth parameter and a discharging rate parameter. The adjustment instruction is received via the vehicle control unit. After receiving the adjustment requirement of the user, the vehicle control unit VCU releases the requirement to the battery management system BMS through the CAN bus network.

[0041] For each charging parameter / discharge parameter, an adjustable range is provided. For example, the adjustable range of the charging depth parameter is 70%-100%, which means that the user is allowed to set the cut-off SOC value for fast charging and slow charging between 70%-100%. The adjustable range of the SOC value is subject to the manufacturer's defined range, and in principle, it is not allowed to exceed the maximum SOC value that the product can withstand. The adjustable range of the discharging depth parameter is 0%-50%, which means that the user is allowed to set the discharging depth cut-off SOC value between 0%-50%. In particular, for some parameters, on the basis of the adjustable range, a plurality of options are provided. For example, a plurality of options are provided for the fast charging rate parameter and the discharging rate parameter. The adjustment of the charging rate can meet the user's demand for charging time, and the adjustment of the discharging rate can meet the user's demand for the maximum speed. It can be understood that the upper and lower limits of the above-mentioned adjustable range are set on the premise that the battery can be normally used.

[0042] In some embodiments, the discharging rate parameter further includes a continuous discharging rate and a peak discharging rate for adjusting the continuous discharging power and the instantaneous discharging power. Continuous discharging means the power that can be stably output for a long time during continuous acceleration or long uphill, and peak discharging means the limit power that can be provided during emergency acceleration.

[0043] It can be understood that the manufacturer can gradually release the adjustable charging parameters / discharge parameters in sequence according to the verification. That is, when the manufacturer verifies that there is an update for the charging parameters / discharge parameters, or there is an update for the adjustable range of the charging parameters / discharge parameters, the update can be performed through remote upgrading.

[0044] In step 2, the influence of one or more of the adjustment values on the service life of the battery is also prompted, for example, it is prompted that the lower the cut-off SOC setting of fast charging and slow charging in the range, the more beneficial it is to the prolongation of the service life of the battery.

[0045] In step 3, after receiving the adjustment requirement released by the vehicle control unit VCU, the battery management system BMS converts the adjustment requirement based on the user's adjustment requirement through the processing chip inside the battery management system BMS, and feeds back the information whether the adjustment is successful to the vehicle control unit VCU through the CAN bus network. The vehicle control unit VCU then displays the received information to the user through the vehicle-mounted multimedia system.

[0046] It can be understood that the charging parameter can be set at any time for the next charging control. When the next charging starts, the battery management system receives the adjustment instruction of the charging parameter and starts to execute step 3. In addition, generally, the user uses the vehicle regularly, for example, charges every few days, the time period of charging, etc. Based on this, the set charging parameter can be designated as a memory parameter. Before each charging is executed, if it is detected that the user does not reset the charging parameter, the memory parameter is obtained for subsequent charging control. Specifically, the historical parameter setting within a set time period can be used as the memory parameter, for example, the parameter set within 24 hours; or the memory parameter can be specified for weekdays or weekends respectively. Before each charging is executed, if it is detected that the user does not reset the charging parameter, it is determined according to the time whether to use the weekday memory parameter or the weekend memory parameter.

[0047] The discharge parameter can also be set at any time. If it is set during the non-use time period of the vehicle, it is used as the initial parameter for the next use of the vehicle. When the next use of the vehicle starts (for example, when the ignition switch of the vehicle is turned to ACC or ON), the battery management system receives the adjustment instruction of the discharge parameter and starts to execute step 3. If it is set during the use of the power battery, the battery management system receives the adjustment instruction of one or more charging parameters / discharge parameters and executes step 3.

[0048] If the parameter to be adjusted includes the charging depth, the charging current of the battery is collected in real time during the next charging process, the real-time charging amount is integrated, the current remaining amount is calculated in combination with the last discharge depth, and the remaining amount is fed back to the user side. Further, the range is also predicted according to the remaining amount. It can be understood that the remaining amount / range can be fed back to the user side after charging is completed, can be fed back to the user side in real time, or can be fed back to the user side in response to the query of the user.

[0049] If the parameter to be adjusted includes the discharge depth, the discharge current is collected in real time during the use of the vehicle, the current used amount is integrated, the current remaining amount is calculated in combination with the remaining amount at the end of the last charging and is updated to the user side in real time. Further, the range is also predicted according to the current driving condition and driving data of the vehicle. Based on this, the user can judge whether it is sufficient to reach the destination in combination with the remaining amount / remaining range, so as to reasonably plan the subsequent power consumption, for example, to reduce the power of the power consumption equipment such as the air conditioner in the vehicle. In particular, it is assumed that the current remaining amount has been almost exhausted, but the destination / charging station is within a certain distance. The user can adjust the discharge depth, for example, from 50% to 40%, so that the vehicle can travel a longer distance.

[0050] To enable the user to plan the power usage in advance, a discharge depth threshold for the low power alarm is also received, which is, for example, in the range of 0%-50%.

[0051] In some embodiments, if the user is navigating based on the user terminal or the vehicle multimedia system, the destination and the planned route are also obtained, and the required power is predicted in combination with the road condition information of the planned route. Since the influencing factors of the driving range are complex, in addition to the basic road conditions such as slope, driving behaviors such as acceleration and deceleration are also included. Therefore, during the driving of the vehicle, the remaining power is also monitored in real time to determine whether it is sufficient to reach the destination. If not, a discharge depth adjustment suggestion is given according to the difference in required power.

[0052] That is, the battery management system calculates the available energy value and the reserved energy value after receiving any adjustment requirement of the charge depth and the discharge depth released by the vehicle control unit VCU, and feeds back the adjusted latest information to the vehicle control unit VCU through the CAN bus network. The vehicle control unit VCU converts the received energy value into the driving range through an algorithm and displays it on the user interface.

[0053] Based on the above technical solutions, the charge and discharge parameters of the power battery can be adjusted within a certain range according to the personal driving habits of the user, and guidance is given to each parameter on the service life of the battery during the adjustment. On the basis of avoiding overcharging and overdischarging, the service life of the battery is further prolonged. In addition, when there are extreme requirements (such as breaking a lot of roads, requiring deep discharge, requiring high-speed driving, etc.), the discharge rate or discharge depth can be adjusted at any time as needed to meet the diversified needs of users.

[0054] Based on the above method, one or more embodiments of the present application also provide an electric vehicle charge and discharge control device based on user interaction, comprising:

[0055] The demand adjustment confirmation module is configured to send and display the adjustable charge / discharge parameters and their adjustable ranges to the user side in response to the power battery charge / discharge demand adjustment instruction;

[0056] The adjustment instruction acquisition module is configured to receive an adjustment instruction of one or more charge / discharge parameters, the adjustment instruction including the to-be-adjusted parameter and the adjustment value; and prompt the influence of one or more adjustment values on the service life of the battery;

[0057] The parameter adjustment verification module is configured to determine whether the adjustment value meets the requirements according to the adjustable range of the to-be-adjusted parameter, and if so, enter the charge / discharge control module, and if not, feed back a message to the user that the adjustment cannot be made as required;

[0058] The charging / discharging control module is configured to adjust the to-be-adjusted parameter according to the adjustment value, and perform charging / discharging control.

[0059] One or more embodiments above pass the user's adjustment to the battery management system (BMS) of the battery system through a vehicle controller (VCU) by an information interaction strategy. The battery management system (BMS) adjusts the internal strategy by receiving the information issued by the vehicle controller (VCU). The battery management system (BMS) of the battery system and the vehicle controller (VCU) communicate and interact information through the CAN bus. The vehicle controller (VCU) and the center console communicate and interact information through the CAN bus, and the vehicle controller (VCU) and the vehicle APP communicate and interact information through wireless signals.

[0060] One or more embodiments of the present application also provide an electronic device that can be used to implement the above-mentioned user interaction-based electric vehicle charging / discharging control method. The electronic device includes one or more processors, one or more memories coupled to the processors, and a communication module coupled to the processors.

[0061] The memory can include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, at least one of a Read-Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash memory, a hard disk, a Compact Disc (CD), a Digital Versatile Disc (DVD), or other magnetic storage and / or optical storage. Examples of volatile memories include, but are not limited to, at least one of a Random Access Memory (RAM), or other volatile memories that do not last during a power-off duration. The computer program can be stored in the ROM. The processor executes the computer program to implement the above-mentioned user interaction-based electric vehicle charging / discharging control method.

[0062] In some embodiments, the program can be tangibly embodied in a computer-readable medium, which can include other storage devices in the device (such as in the memory) or can be accessed by the device. The program can be loaded from the computer-readable medium to the RAM for execution. The computer-readable medium can include any type of tangible non-volatile memory, such as a ROM, an EPROM, a flash memory, a hard disk, the computer-readable storage medium storing a computer program, the computer program being executed by the processor to implement the above-mentioned user interaction-based electric vehicle charging / discharging control method.

[0063] In the embodiments described above, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof, and when implemented by software, the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions loaded and executed on a server or terminal, and the computer program instructions, when executed, generate all or part of the processes or functions described in the embodiments of the present application. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium accessible by the server or terminal or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk and magnetic tape, etc.), optical media (such as digital video disk (digital video disk, DVD), etc.), or semiconductor media (such as solid state disk, etc.).

[0064] In addition, although each operation is described in a particular order, it should be understood that the operations are not required to be performed in the particular order shown or in sequential order, or that all illustrated operations should be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing can be advantageous. Likewise, the specific sequence of implementation described in the above discussion is not intended to be construed as limiting. Certain features described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in separate embodiments or in any suitable sub-combination.

[0065] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A method for controlling charging and discharging of an electric vehicle, characterized by, The method comprises the following steps: In response to a power battery charging / discharging demand adjustment instruction, sending adjustable charging / discharging parameters and their adjustable ranges to a user side and displaying them; Receiving an adjustment instruction of one or more charging / discharging parameters, the adjustment instruction comprising a parameter to be adjusted and an adjustment value; prompting an influence of one or more adjustment values on a battery service life; According to an adjustable range of the parameter to be adjusted, judging whether the adjustment value meets a requirement; If the adjustment value meets the requirement, adjusting the parameter to be adjusted according to the adjustment value, and performing charging / discharging control.

2. The electric vehicle charge and discharge control method according to claim 1, wherein The charging parameters comprise a charging depth parameter and a fast charging rate parameter; the discharging parameters comprise a discharging depth parameter and a discharging rate parameter; the discharging rate parameter further comprises a continuous discharging rate and a peak discharging rate.

3. The electric vehicle charge-discharge control method according to claim 1 or 2, characterized by, The charging parameters and the discharging parameters can be set at any time.

4. The electric vehicle charge-discharge control method according to claim 2, wherein If the parameter to be adjusted comprises a charging depth, a charging current of the battery is collected in real time in a next charging process, a real-time charging capacity is obtained by integration, a current remaining capacity is calculated in combination with a last discharging depth, and the remaining capacity is fed back to the user side.

5. The electric vehicle charge and discharge control method according to claim 2, wherein If the parameter to be adjusted comprises a discharging depth, a discharging current is collected in real time during vehicle use, a current used capacity is obtained by integration, a current remaining capacity is calculated in combination with a remaining capacity at the end of a last charging, and the current remaining capacity is updated to the user side in real time.

6. The electric vehicle charge and discharge control method according to claim 5, wherein A destination and a planned route are further obtained, and a remaining capacity is further monitored in real time during vehicle driving, whether it is sufficient to reach the destination is judged, if not, a discharging depth adjustment suggestion is given according to a required capacity difference.

7. An electric vehicle charge-discharge control device characterized by comprising: The method comprises: A demand adjustment confirmation module configured to, in response to a power battery charging / discharging demand adjustment instruction, send adjustable charging / discharging parameters and their adjustable ranges to a user side and display them; An adjustment instruction acquisition module configured to receive an adjustment instruction of one or more charging / discharging parameters, the adjustment instruction comprising a parameter to be adjusted and an adjustment value; and prompt an influence of one or more adjustment values on a battery service life; A parameter adjustment verification module configured to, according to an adjustable range of the parameter to be adjusted, judge whether the adjustment value meets a requirement; A charging / discharging control module configured to, if the adjustment value meets the requirement, adjust the parameter to be adjusted according to the adjustment value, and perform charging / discharging control.

8. An electronic device, comprising: The electronic device comprises a processor and a memory, and the memory stores computer instructions, when the computer instructions are executed by the processor, the electronic device executes the method in any one of claims 1 to 6.

9. A computer readable storage medium storing a computer program, when the program is executed by a processor, the method in any one of claims 1 to 6 is implemented.

10. A computer program product comprising computer executable instructions, characterised in that, The computer executable instructions, when executed by a processor, implement the method in any one of claims 1 to 6.

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