CN109130866B - New energy automobile driving data power-on and power-off storage control method - Google Patents
New energy automobile driving data power-on and power-off storage control method Download PDFInfo
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- CN109130866B CN109130866B CN201810980019.5A CN201810980019A CN109130866B CN 109130866 B CN109130866 B CN 109130866B CN 201810980019 A CN201810980019 A CN 201810980019A CN 109130866 B CN109130866 B CN 109130866B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
Abstract
The invention relates to a new energy automobile driving data power-on and power-off storage system and a control method, wherein the system comprises a vehicle control unit VCU, a battery electric quantity state module SOC, a data storage module EEPROM and a key signal module; the key signal module and the battery electric quantity state module SOC are respectively in communication connection with a VCU of the vehicle controller; the VCU of the vehicle control unit is in communication connection with the EEPROM; the key signal module is used for providing an automobile power-on and power-off signal for the VCU of the vehicle controller; the battery electric quantity state module SOC is used for providing driving data of the vehicle in each electric quantity state to the VCU of the vehicle controller; the data storage module EEPROM is used for storing driving data of the automobile; the VCU of the vehicle controller is used for reading the electric signals of the vehicle and the driving data of the vehicle in each electric quantity state, and storing and calling and calculating the driving data of the vehicle in each electric quantity state for the second time; the scheme provided by the invention is practical, has low cost, is suitable for the current new energy automobile, and improves the driving experience of the new energy automobile.
Description
Technical Field
The invention belongs to the technical field of new energy vehicles, and particularly relates to a new energy vehicle driving data power-on and power-off storage control method.
Background
When the new energy vehicle is driven, a driver can estimate the driving distance according to the remaining driving mileage of the new energy vehicle, so that a proper driving route is selected; the calculation and display of the endurance mileage of the whole vehicle are very important, and the new energy vehicle needs to calculate the current remaining mileage in real time and display the current remaining mileage on an instrument panel for a driver to refer to.
In order to accurately estimate the endurance mileage of the whole vehicle, when the whole vehicle is powered on, a whole vehicle control system needs to read driving data such as the endurance mileage and the like corresponding to different battery electric quantities (SOC) of the whole vehicle in the previous driving period; and when the power is off, the relevant driving data used for calculating the driving range of the current driving period is stored.
The current driving mileage of the whole new energy automobile is relatively complex to calculate, the driving data of the new energy automobile cannot be stored for control, and the whole automobile control system cannot be guaranteed to accurately calculate the current driving mileage in real time for a driver to refer to.
Disclosure of Invention
The invention designs a new energy automobile driving data power-on and power-off storage system and a control method, and solves the problems that the driving mileage of a whole new energy automobile is relatively complex to calculate and the mileage cannot be accurately calculated.
In order to solve the technical problems, the invention adopts the following scheme:
a new energy automobile driving data power-on and power-off storage system comprises a vehicle control unit VCU, a battery electric quantity state module SOC, a data storage module EEPROM and a key signal module; the key signal module and the battery electric quantity state module SOC are respectively in communication connection with a VCU of the vehicle controller; the VCU of the vehicle control unit is in communication connection with the EEPROM; the key signal module is used for providing an automobile power-on and power-off signal for the VCU of the vehicle controller; the battery electric quantity state module SOC is used for providing driving data of the vehicle in each electric quantity state to the VCU of the vehicle controller; the data storage module EEPROM is used for storing driving data of the automobile; the VCU of the vehicle control unit is used for reading the electric signals of the vehicle and the driving data of the vehicle in each electric quantity state, and storing and calling and calculating the driving data of the vehicle in each electric quantity state for the second time.
Further, the system also comprises a Random Access Memory (RAM); the VCU of the vehicle controller is connected with the EEPROM through the RAM; and the random access memory RAM is used for updating the driving data of the automobile and storing the driving data to the data storage module EEPROM.
Further, the vehicle control unit VCU is also connected with the vehicle control system and used for receiving the SOC information of the battery electric quantity state module and calculating the endurance mileage; and/or the data storage module is used for calling the driving data in the EEPROM and calculating the endurance mileage.
Furthermore, the device also comprises an instrument; the instrument is connected with the VCU of the whole vehicle controller and is used for displaying the endurance mileage of the vehicle in real time after the vehicle is powered on.
Correspondingly, the invention also provides a new energy automobile driving data power-on and power-off storage control method, which comprises the new energy automobile driving data power-on and power-off storage system; further comprising the steps of:
s1: the method comprises the following steps that when an automobile starts to be powered on, a VCU of a vehicle controller calculates the endurance mileage of the automobile under the current SOC according to driving data provided by an EEPROM (electrically erasable programmable read-Only memory) module, and displays the endurance mileage on an instrument in real time along with the change of the SOC;
s2: when the automobile starts to be powered off, the VCU of the vehicle controller is stored in the EEPROM according to the current driving data of the automobile so as to be called when the automobile is powered on next time.
The new energy automobile driving data power-on and power-off storage system and the control method have the following beneficial effects:
the invention provides a new energy automobile driving data power-on and power-off storage system and a control method, wherein when a whole automobile is powered on, driving data in the previous period are read; when the whole vehicle is powered off, storing the data of the current driving period; therefore, storage control of the driving data of the new energy automobile can be realized, and the whole automobile control system can accurately calculate the current endurance mileage in real time for a driver to refer to; the novel energy automobile driving device is simple in structure, stable, practical and low in cost, is suitable for the current new energy automobile, and improves the driving experience of the new energy automobile.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of a new energy automobile driving data power-on and power-off storage system;
FIG. 2: the invention relates to a flow chart of a new energy automobile driving data power-on and power-off storage control method.
Detailed Description
The invention will be further explained with reference to the accompanying drawings:
fig. 1 shows a new energy vehicle driving data charging and discharging storage system, which includes a vehicle control unit VCU, a battery state of charge module SOC, a data storage module EEPROM, and a key signal module; the key signal module and the battery electric quantity state module SOC are respectively in communication connection with a VCU of the vehicle controller; the VCU of the vehicle control unit is in communication connection with the EEPROM; the key signal module is used for providing an automobile power-on and power-off signal for the VCU of the vehicle controller; the battery electric quantity state module SOC is used for providing driving data and electric quantity information of the vehicle in each electric quantity state to the VCU of the vehicle controller; the data storage module EEPROM is used for storing driving data of the automobile; the VCU of the vehicle controller is used for reading the electric signals of the vehicle and the driving data of the vehicle in each electric quantity state, storing the driving data of the vehicle in each electric quantity state and calling for the second time to calculate the mileage of the vehicle; by adopting the scheme, the driving mileage condition of the new energy automobile can be conveniently known, and the system is relatively reliable and practical.
Preferably, in combination with the above scheme, as shown in fig. 1, in this embodiment, a random access memory RAM is further included; the VCU of the vehicle controller is connected with the EEPROM through the RAM; the random access memory RAM is used for updating the driving data of the automobile and storing the driving data to the data storage module EEPROM; the random access memory RAM has high response speed, can reduce the direct operation times of the EEPROM and has effective protection effect on the EEPROM. When the whole vehicle is electrified again, the data stored in the EEPROM can be read.
Preferably, with reference to the above scheme, as shown in fig. 1, in this embodiment, the vehicle control unit VCU is further connected to the vehicle control system, and is configured to receive the SOC information of the battery state of charge module and calculate the endurance mileage; and/or the data storage module is used for calling the driving data in the EEPROM and calculating the endurance mileage; the VCU of the vehicle controller is directly arranged on a vehicle control system and used for transmitting, processing, calculating and the like data of the vehicle system, so that the VCU is controlled by combining the vehicle control system, and the problems of complex structure and high cost caused by adopting an independent system are avoided.
Preferably, in combination with the above scheme, as shown in fig. 1, in this embodiment, a meter is further included; the instrument is connected with the VCU of the whole vehicle controller and is used for displaying the endurance mileage of the vehicle in real time after the vehicle is powered on, so that a driver can conveniently read the endurance mileage and know the driving mileage in real time.
Correspondingly, in combination with the above scheme, as shown in fig. 2, the invention further provides a new energy automobile driving data power-on and power-off storage control method, which includes the new energy automobile driving data power-on and power-off storage system; further comprising the steps of:
s1: the method comprises the following steps that when an automobile starts to be powered on, a VCU of a vehicle controller calculates the endurance mileage of the automobile under the current SOC according to driving data provided by an EEPROM (electrically erasable programmable read-Only memory) module, and displays the endurance mileage on an instrument in real time along with the change of the SOC; specifically, the VCU of the vehicle controller acquires the power-on information of the vehicle according to the key signal module;
s2: when the automobile starts to be powered off, the VCU of the vehicle controller stores the driving data of the current automobile in the EEPROM (electrically erasable programmable read-only memory) module so as to call and calculate the operable mileage of the automobile when the automobile is powered on next time.
Preferably, with the above scheme, in this embodiment, the vehicle control unit VCU is further connected to a vehicle control system; the whole vehicle control system is provided with a FLAG FLAG bit; the FLAG FLAG bit is used for judging whether the VCU of the vehicle control unit is refreshed or not; when the VCU of the whole vehicle controller is refreshed, the FLAG FLAG bit is 1 and is stored in a corresponding BLOCK area in the EEPROM of the data storage module, so that the reading is convenient; when the VCU of the whole vehicle controller is not refreshed again, the FLAG FLAG bit is 0 and is stored in a corresponding BLOCK area in the EEPROM of the data storage module, so that the reading is convenient.
Preferably, in combination with the above scheme, as shown in fig. 2, in this embodiment, the method further includes the following steps:
when the car is powered on, the vehicle is powered on,
s11: the method comprises the steps that a vehicle control system reads a FLAG FLAG bit to be 1, then judges that a current vehicle control unit VCU is electrified for the first time after being refreshed, and assigns a default value to driving data for subsequent calculation;
s12: then, the FLAG value is assigned to 0 and is stored in the data storage module EEPROM after the automobile is powered off;
when the car is powered on again, the vehicle,
the whole vehicle control system reads that the FLAG bit is 0, and then the driving data of the previous driving period is used for calculation; at this time, the driving data is read from the corresponding BLOCK area in the data storage module EEPROM.
Preferably, in combination with the above solution, as shown in fig. 2, in this embodiment, the data storage module EEPROM includes a plurality of BLOCK areas; the plurality of BLOCK areas respectively and correspondingly store different driving data; the whole vehicle control system sets the position of the data information zone bit of the BLOCK region to be 1, and the data information zone bit is used for indicating that the whole vehicle control system successfully reads the driving data of the BLOCK region; the whole vehicle control system sets the position of a data information zone bit of the BLOCK area to be 0 and is used for indicating that the whole vehicle control system fails to read the driving data of the BLOCK area; further comprising the steps of:
s21: after the automobile is powered on, firstly, judging a FLAG FLAG bit of a VCU of the vehicle control unit; if the FLAG bit is 1, the current driving period is the first power-on after the VCU of the vehicle control unit is refreshed, and driving data is assigned as an initial value; if the FLAG bit is 0, the current situation is that the vehicle control unit VCU is powered on for the first time after non-refreshing, and then the driving data stored in the data storage module EEPROM is read;
s22: then, the position of the zone bit read by the corresponding BLOCK area is judged; if the value is 1, the driving data is read successfully, and the next period does not execute the program; if the value is 0, firstly assigning an initial value to the driving data, and periodically executing the program until the reading is successful;
s23: after the driving data value is successfully acquired, the whole vehicle control system can calculate the endurance mileage in real time and update and display the endurance mileage on an instrument for the driver to refer to.
Preferably, in combination with the above solution, as shown in fig. 2, in this embodiment, the data storage module EEPROM includes a plurality of BLOCK areas; the plurality of BLOCK areas respectively and correspondingly store different driving data; when the whole vehicle control system calculates the endurance mileage, the driving is updated in the RAM in real time; when the automobile is powered off, driving data is stored in a corresponding BLOCK area in an EEPROM (electrically erasable programmable read-Only memory) of a data storage module through a RAM (random access memory); the Random Access Memory (RAM) is adopted for updating, so that the response speed is high, the direct operation times of the EEPROM of the data storage module can be reduced, and the effective protection effect on the EEPROM of the data storage module is achieved; when the whole vehicle is powered on again, the data stored in the EEPROM can be read.
The invention provides a new energy automobile driving data power-on and power-off storage system and a control method, wherein when a whole automobile is powered on, driving data in the previous period are read; when the whole vehicle is powered off, storing the data of the current driving period; the storage control of new energy automobile driving data can be realized like this to guarantee that whole car control system can accurately calculate current continuation of the journey mileage in real time for the driver to refer to, have simple structure, stable, practical, with low costs, be applicable to on the current new energy automobile, improve new energy automobile's driving experience.
The invention is described above with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (6)
1. The new energy automobile driving data power-on and power-off storage control method is characterized by comprising a new energy automobile driving data power-on and power-off storage system, wherein the system comprises a vehicle control unit VCU, a battery electric quantity state module SOC, a data storage module EEPROM and a key signal module; the key signal module and the battery electric quantity state module SOC are respectively in communication connection with the VCU of the vehicle controller; the VCU of the vehicle control unit is in communication connection with the EEPROM; the key signal module is used for providing vehicle up-and-down electric signals for the VCU of the vehicle controller; the battery electric quantity state module SOC is used for providing driving data of the vehicle in each electric quantity state to the VCU of the vehicle controller; the data storage module EEPROM is used for storing driving data of the automobile; the VCU is used for reading the electric signals of the vehicle on and off and the driving data of the vehicle in each electric quantity state, and storing and carrying out secondary calling calculation on the driving data of the vehicle in each electric quantity state; further comprising the steps of:
s1: the method comprises the following steps that when an automobile starts to be powered on, a VCU of a vehicle controller calculates the endurance mileage of the automobile under the current SOC according to driving data provided by an EEPROM (electrically erasable programmable read-Only memory) module, and displays the endurance mileage on an instrument in real time along with the change of the SOC;
s2: when the automobile starts to be powered off, the VCU of the vehicle controller is stored in the EEPROM according to the current driving data of the automobile so as to be called when the automobile is powered on next time;
the VCU is also connected with a vehicle control system; the whole vehicle control system is provided with a FLAG FLAG bit; the FLAG FLAG bit is used for judging whether the VCU of the whole vehicle controller is refreshed or not; when the VCU of the vehicle control unit is refreshed, the FLAG FLAG bit is 1 and is stored in the data storage module EEPROM; when the VCU of the vehicle control unit is not refreshed again, the FLAG FLAG bit is 0 and is stored in the data storage module EEPROM;
further comprising the steps of:
when the car is powered on, the vehicle is powered on,
s11: the vehicle control system reads that the FLAG bit is 1, judges that the current vehicle control unit VCU is powered on for the first time after being refreshed, and assigns a default value to driving data for subsequent calculation;
s12: then, the FLAG value is assigned to be 0, and the FLAG value is stored in the data storage module EEPROM after the automobile is powered off;
when the car is powered on again, the vehicle,
the whole vehicle control system reads that the FLAG bit is 0, and then the driving data of the last driving period is used for calculation; at the moment, the driving data read by the data storage module EEPROM is the driving data of the corresponding BLOCK area;
the data storage module EEPROM comprises a plurality of BLOCK areas; the plurality of BLOCK areas respectively and correspondingly store different driving data;
the whole vehicle control system sets the position of a data information zone bit of a BLOCK region to be 1, and is used for indicating that the whole vehicle control system successfully reads the driving data of the BLOCK region;
the whole vehicle control system sets the position of a data information zone bit of a BLOCK region to be 0, and is used for indicating that the whole vehicle control system fails to read the driving data of the BLOCK region;
further comprising the steps of:
s21: after the automobile is powered on, firstly, judging a FLAG FLAG bit of the VCU of the vehicle control unit; if the FLAG bit is 1, the current driving period is the first power-on after the VCU of the vehicle control unit is refreshed, and driving data is assigned as an initial value; if the FLAG bit is 0, the current situation is that the vehicle control unit VCU is powered on for the first time after non-refreshing, the driving data stored in the data storage module EEPROM are read;
s22: then, the position of the zone bit read by the corresponding BLOCK area is judged; if the value is 1, the driving data is read successfully, and the next period does not execute the program; if the value is 0, firstly assigning an initial value to the driving data, and periodically executing the program until the reading is successful;
s23: after the driving data value is successfully acquired, the whole vehicle control system can calculate the endurance mileage in real time and update and display the endurance mileage on an instrument for the driver to refer to.
2. The new energy automobile driving data power-on and power-off storage control method according to claim 1, wherein the data storage module EEPROM comprises a plurality of BLOCK regions; the plurality of BLOCK areas respectively and correspondingly store different driving data; when the whole vehicle control system calculates the endurance mileage, the driving is updated in the RAM in real time; when the automobile is powered off, driving data is stored in a corresponding BLOCK area in the data storage module EEPROM through the RAM.
3. The new energy vehicle driving data power-on and power-off storage control method according to claim 1, wherein in the step S1, the vehicle control unit VCU acquires power-on information of the vehicle according to a key signal module.
4. The new energy automobile driving data power-on and power-off storage control method according to claim 1, characterized by further comprising a Random Access Memory (RAM); the VCU of the vehicle controller is connected with the EEPROM through the RAM; the random access memory RAM is used for updating the driving data of the automobile and storing the driving data to the data storage module EEPROM.
5. The new energy automobile driving data power-on and power-off storage control method according to claim 1, wherein the vehicle control unit VCU is further connected with a vehicle control system, and is used for receiving the battery state of charge module SOC information and calculating a driving range; and/or the data storage module is used for calling the driving data in the EEPROM and calculating the endurance mileage.
6. The new energy automobile driving data power-on and power-off storage control method according to claim 1, characterized by further comprising an instrument; the instrument is connected with the VCU of the whole vehicle controller and is used for displaying the endurance mileage of the vehicle in real time after the vehicle is powered on.
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| CN110096230A (en) * | 2019-04-12 | 2019-08-06 | 奇瑞新能源汽车技术有限公司 | A kind of updated driving data record system and method for controller |
| CN110262940A (en) * | 2019-05-23 | 2019-09-20 | 东风格特拉克汽车变速箱有限公司 | A kind of new method that the identification of the software after off-line test powers on for the first time |
| CN110825067A (en) * | 2019-09-26 | 2020-02-21 | 潍柴动力股份有限公司 | Abnormal power failure detection method and device |
| CN113401002B (en) * | 2020-03-16 | 2024-04-05 | 北京新能源汽车股份有限公司 | Power-on and power-off control method and device, vehicle and equipment |
| CN111775710B (en) * | 2020-06-30 | 2021-05-18 | 上海挚达科技发展有限公司 | New energy automobile driving mileage calculation method |
| CN112277844B (en) * | 2020-09-29 | 2022-03-11 | 北汽福田汽车股份有限公司 | Mileage backup method and device and vehicle |
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