Automatic endurance control system, method and device for electric vehicle

Abstract

The invention is suitable for the technical field of electric vehicle endurance control, and provides an electric vehicle automatic endurance control system, method and device, the control system comprises a mileage confirmation module, a charging planning module, a capacity acquisition module, a battery charging module, a vehicle optimization module, a wireless communication module, an alarm, a memory, a processing center and a smart phone; the mileage confirmation module, the charging planning module, the capacity acquisition module, the battery charging module, the vehicle optimization module, the wireless communication module, the alarm and the memory are respectively connected with the processing center; the smart phone is in automatic networking connection with the wireless communication module within the range of a wireless network or the Internet; the invention further provides an electric vehicle automatic endurance control method and an electric vehicle automatic endurance control device. A charging scheme can be automatically obtained, automatic inertial charging on downhill roads, natural speed driving on flat roads, natural speed reduction and automatic charging pile selection are achieved, and the cruising ability of a vehicle battery is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle endurance control, and more specifically, relates to an electric vehicle automatic endurance control system, method and device. Background Art

[0002] At present, the sales of new energy electric vehicles have surpassed that of fuel vehicles. However, during long-distance driving, they are always affected by temperature, unknown distance, distribution of charging stations, etc., and cannot surpass the advantage of fuel vehicles that can be refueled and driven at any time without being limited by battery life. Therefore, if new energy electric vehicles are to replace fuel vehicles, the problem of automatic battery life must be solved thoroughly. Automatic charging must be notified in advance, and the journey must be planned in advance, including when and where to charge, how much to charge, and how long to charge, to ensure that the vehicle can be driven normally within the shortest charging time.

[0003] The existing "Automatic Battery Life Extension Device for New Energy Vehicles (Publication Number: CN115027286A)" is a patented mechanical structure technology for automatic battery life extension of new energy vehicles. Its technical principles and implementation methods are not disclosed, and there is no reasonable design of charging plan, so it cannot solve the battery life problem. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide an automatic endurance control system, method and device for electric vehicles. By setting a mileage confirmation module, a charging planning module, a capacity acquisition module, a battery charging module and a vehicle optimization module, the road conditions of the section traveled can be automatically obtained, the charging plan can be automatically obtained, automatic inertia charging on downhill roads, automatic warning charging on flat roads can be realized, and fast driving at a natural speed on flat roads and deceleration at a natural speed can be implemented to recover energy and reduce battery loss, and charging piles can be automatically selected for charging to ensure the battery life of the vehicle.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An electric vehicle automatic cruising range control system, comprising a mileage confirmation module, a charging planning module, a capacity acquisition module, a battery charging module, a vehicle optimization module, a wireless communication module, an alarm, a memory, a processing center, and a smart phone; the mileage confirmation module, the charging planning module, the capacity acquisition module, the battery charging module, the vehicle optimization module, the wireless communication module, the alarm, and the memory are respectively connected to the processing center; the smart phone is automatically networked with the wireless communication module within the range of a wireless network or the Internet;

[0007] The wireless communication module is provided with a wireless network unit, which is responsible for sending and receiving wireless network signals and automatically networking with a smart phone within the range of a wireless network or the Internet;

[0008] The alarm compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory. If the capacity is equal to the threshold, the alarm automatically sounds an alarm and notifies the vehicle to continue charging; and compares the actual storage capacity of the battery with the battery maximum storage capacity standard stored in the memory. If the capacity is lower than the standard, the alarm automatically sounds an alarm and notifies the vehicle for maintenance.

[0009] The memory is responsible for the information storage of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and the storage of the highest profit margin in the industry;

[0010] The processing center is responsible for the information transmission of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and memory. It is the hub of the system and compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the alarm is transmitted to the alarm and the vehicle is notified to continue charging; and compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is higher than the standard, the vehicle continues to drive; if it is lower than the standard, the alarm is transmitted to the alarm and the vehicle is notified to be repaired;

[0011] The mileage confirmation module includes a distance confirmation unit, a road layout unit, and a charging distribution unit, which obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through networking as the control basis for subsequent charging, and transmits it to the charging planning module;

[0012] The charging planning module includes a battery information unit, a charging plan unit, a vehicle speed setting unit, and a trajectory design unit, which is responsible for planning and designing the vehicle running trajectory according to the destination road condition information to meet the normal supply of vehicle battery power, as a control basis for subsequent charging, and passing it to the capacity acquisition module;

[0013] The capacity acquisition module includes a voltage detection unit, a current detection unit, a temperature detection unit, a capacity calculation unit, and an energy integration unit. The actual battery capacity of the vehicle during driving is acquired through the intelligent sensors provided, so as to analyze whether the battery needs to be charged and transmit the information to the processing center.

[0014] The charging implementation module includes a flat road speed control unit, a downhill charging unit, an uphill acceleration unit, a low speed stabilization unit, and a power station charging unit, which is responsible for notifying the driver to prepare for charging in a predetermined manner according to the battery power through the battery track, so as to facilitate the normal charging of the vehicle battery and pass it to the vehicle maintenance module;

[0015] The vehicle maintenance module includes a load detection unit, a load detection unit, a motor detection unit, a system detection unit, and a battery detection unit. The abnormal detection data of various functions of the vehicle are obtained through a vehicle intelligent detector to determine abnormal problems of the vehicle and repair or replace the battery to ensure normal operation of the vehicle.

[0016] The present invention also provides an electric vehicle automatic cruising range control method, which is applied to an electric vehicle automatic cruising range control system, and the method comprises the following steps:

[0017] S10, when the vehicle is traveling, the mileage confirmation module obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through the network as the basis for subsequent charging planning, and transmits it to the charging planning module;

[0018] S20, the charging planning module plans and designs the vehicle running trajectory according to the destination road condition information to ensure the normal supply of vehicle battery power, which serves as the control basis for subsequent charging and is transmitted to the capacity acquisition module;

[0019] S30, the capacity acquisition module obtains the actual battery capacity of the vehicle during driving through the set intelligent sensor, so as to analyze whether the battery needs to be charged and transmit it to the processing center;

[0020] S40, the processing center compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the alarm is transmitted to the alarm device and the charging is continued;

[0021] S50, the battery charging module notifies the driver to prepare for charging in a predetermined manner according to the battery power through the battery track, so as to facilitate normal charging of the vehicle battery, and transmits it to the vehicle optimization module;

[0022] S60: The vehicle maintenance module obtains abnormal detection data of various functions of the vehicle through the vehicle intelligent detection equipment to determine the abnormal problem of the vehicle and repair or replace the battery to ensure the normal operation of the vehicle.

[0023] Further, the step S10 comprises the following steps:

[0024] S11, the distance confirmation unit obtains the travel route and its distance, the stations or service areas passed through the target location through map navigation, so as to facilitate the subsequent road layout, and transmits it to the road layout unit;

[0025] S12, the road layout unit obtains the distances and distribution points of each straight flat road, turning road, uphill steep road, and downhill steep road that the target route will experience through the highway management system, and transmits them to the charging distribution unit;

[0026] S13. The charging distribution unit obtains the specific location points and the distances between various charging stations or charging piles within the target route in a timely manner by connecting to the network map to facilitate subsequent timely charging.

[0027] Further, the step S20 comprises the following steps:

[0028] S21, the battery information unit obtains the current actual available power and warning power of the current vehicle battery through the set battery tester to facilitate the selection of subsequent charging plans, and transmits it to the charging plan unit;

[0029] S22, the charging planning unit selects downhill charging, charging pile charging or mixed charging according to the downhill road information and charging station information within the target distance to ensure the lowest charging cost, and transmits it to the vehicle speed reservation unit;

[0030] S23, the vehicle speed presetting unit obtains the vehicle speed of each vehicle in the road section by connecting to the highway system vehicle speed database and performs matching to obtain the pre-set vehicle speed of each road section, and transmits it to the trajectory design unit;

[0031] S24. The trajectory design unit designs an operation trajectory diagram for driving, downhill charging, and charging pile charging according to the road conditions within the target distance, which serves as a basis for future vehicle driving and charging.

[0032] Further, the step S30 comprises the following steps:

[0033] S31, the voltage detection unit obtains the actual voltage of the current vehicle battery through the voltage sensing element, which is proportional to the battery capacity, to estimate the battery capacity, and transmits it to the current detection unit;

[0034] S32, the current detection unit obtains the actual current of the current vehicle battery through the current sensing element to determine the current charge and discharge state of the battery, and transmits it to the temperature detection unit;

[0035] S33, the temperature detection unit obtains the actual temperature of the current vehicle battery through the temperature sensing element to determine the current charge and discharge state of the battery, and transmits it to the capacity calculation unit;

[0036] S34, the capacity calculation unit obtains the current battery capacity according to the battery capacity calculation formula "C = I*T, C is the battery capacity (Ah), I is the battery discharge current (A), T is the battery actual discharge time (h)", and transmits it to the energy integration unit;

[0037] S35. The energy integration unit obtains the battery charging and discharging energy according to the battery energy calculation formula "E = C*U*I*T÷1000, E is the battery energy (kWh), C is the battery capacity (Ah), U is the battery voltage (V), I is the battery current (A), and T is the battery usage time (s)" to determine the current battery charging and discharging state.

[0038] Further, the step S50 comprises the following steps:

[0039] S51, the flat road speed control unit drives at a normal speed at a preset flat road speed, obtains a maximum speed with a minimum amount of electricity, maximizes the use of electricity to save electricity, and transmits it to the downhill charging unit;

[0040] S52, the downhill charging unit obtains the preset downhill speed and running inertia through the slope sensor to perform gliding charging, so that the gliding speed is offset by the charging speed to increase the power and extend the endurance, and transmits it to the uphill acceleration unit;

[0041] S53, the uphill acceleration unit obtains the preset uphill speed through the slope sensor to ensure the maximum efficiency of battery use, reduce the minimum loss of battery power and save power, and transmits it to the low-speed stabilization unit;

[0042] S54, the low-speed stabilization unit obtains the low-speed driving road through the high-definition camera and reduces the driving speed and safety stability to ensure the driving comfort of the vehicle and achieve the purpose of saving electricity, and transmits it to the power station charging unit;

[0043] S55, the power station charging unit charges the battery for a predetermined time through a predetermined charging pile to reach a predetermined battery capacity, thereby minimizing the driving time and maximizing the battery life, and transmits the charge to the processing center;

[0044] S56. The processing center compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is equal to the standard, the vehicle continues to drive; if it is lower than the standard, the alarm is transmitted to the vehicle and the vehicle maintenance is notified.

[0045] Further, the step S60 comprises the following steps:

[0046] S61, the load detection unit obtains whether the total weight of the vehicle exceeds the maximum load of the vehicle through the load sensor, and if it is overweight, an alarm is issued to prompt weight reduction, and if it is not overweight, the alarm is transmitted to the load detection unit;

[0047] S62, the load detection unit obtains whether the vehicle mileage exceeds the standard through the load sensor, and if so, an alarm is issued to prompt the vehicle to stop and rest; if not, the alarm is transmitted to the motor detection unit;

[0048] S63, the motor detection unit obtains whether the service life or wear degree of the vehicle motor exceeds the standard through the motor life tester, and if so, an alarm is issued to prompt the replacement of the motor, and if not, the alarm is transmitted to the system detection unit;

[0049] S64, the system detection unit obtains whether the operating status of the vehicle battery management system is normal through the BMS tester, and if it is abnormal, an alarm is issued to prompt the replacement of the battery system, and if it is normal, it is transmitted to the battery detection unit;

[0050] S65. The battery detection unit obtains whether the service life or battery loss status of the vehicle battery is normal through a battery tester. If it is abnormal, an alarm is issued to prompt the battery to be replaced. If it is normal, the vehicle should be scrapped.

[0051] An electric vehicle automatic cruising range control system provided by the present invention also includes a computer device and a computer-readable storage medium; the computer device includes a memory and various functional modules, the memory stores a computer program, and the various functional modules implement the steps of any one of the above-mentioned electric vehicle automatic cruising range control methods when executing the computer program; the computer-readable storage medium stores a computer program, and the computer program implements the steps of any one of the above-mentioned electric vehicle automatic cruising range control methods when executed by the various functional modules.

[0052] The present invention also provides an electric vehicle automatic cruising range control device, which is implemented by using the above-mentioned electric vehicle automatic cruising range control system and the above-mentioned electric vehicle automatic cruising range control method.

[0053] The beneficial effects of the present invention compared with the prior art are as follows:

[0054] By setting up the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, and vehicle optimization module, the road conditions of the section being traveled can be automatically obtained, the charging plan can be automatically obtained, automatic inertia charging on downhill roads, automatic warning charging on flat roads can be realized, and fast driving at a natural speed on flat roads and deceleration at a natural speed can be implemented to recover energy and reduce battery loss. Charging piles can be automatically selected for charging to ensure the battery life of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 It is a schematic diagram of the system module of the present invention;

[0057] Figure 2 This is a schematic diagram of a mileage confirmation module of the present invention;

[0058] Figure 3 This is a schematic diagram of a charging planning module of the present invention;

[0059] Figure 4 It is a schematic diagram of a capacity acquisition module of the present invention;

[0060] Figure 5 It is a schematic diagram of a battery charging module of the present invention;

[0061] Figure 6 A schematic diagram of a vehicle optimization model of the present invention;

[0062] Figure 7 It is a schematic diagram of the method flow of the present invention;

[0063] Figure 8 This is a schematic diagram of the process decomposition of step S10 in the method flow of the present invention;

[0064] Fig. 9 This is a schematic diagram of the process decomposition of step S20 in the method flow of the present invention;

[0065] Fig.10 This is a schematic diagram of the process decomposition of step S30 in the method flow of the present invention;

[0066] Fig.11 This is a schematic diagram of the process decomposition of step S50 in the method flow of the present invention;

[0067] Fig.12 It is a schematic diagram of the program decomposition of step S60 in the method flow of the present invention. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0069] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments:

[0070] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0071] It should be noted that when a module is referred to as being "disposed" or "disposed on" another module, it can be directly on the other module or indirectly on the other module. When a module is referred to as being "connected to" or "connected to" another module, it can be directly connected to the other module or indirectly connected to the other module.

[0072] In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0073] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0074] Please refer to Figure 1 As shown, the present invention provides an automatic endurance control system for an electric vehicle, comprising a mileage confirmation module, a charging planning module, a capacity acquisition module, a battery charging module, a vehicle optimization module, a wireless communication module, an alarm, a memory, a processing center, and a smart phone; the mileage confirmation module, the charging planning module, the capacity acquisition module, the battery charging module, the vehicle optimization module, the wireless communication module, the alarm, and the memory are respectively connected to the processing center; the smart phone is automatically networked with the wireless communication module within the range of a wireless network or the Internet.

[0075] The wireless communication module is provided with a wireless network unit, which is responsible for sending and receiving wireless network signals and automatically networking with a smart phone within the range of a wireless network or the Internet.

[0076] The alarm compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory. If they are equal to the threshold, it automatically sounds an alarm and notifies the vehicle to continue charging; and compares the actual storage capacity of the battery with the battery maximum storage capacity standard stored in the memory. If they are lower than the standard, it automatically sounds an alarm and notifies the vehicle for maintenance.

[0077] Furthermore, the battery capacity charging threshold standard refers to the standard value of the amount of electricity that must be charged within the expected mileage or road section, including the amount of electricity within the mileage of flat road driving and the amount of electricity within the road section; the battery maximum storage capacity standard refers to the capacity currently remaining in the vehicle battery. If it is a new battery, the maximum capacity of the battery is 100%; if the battery life is only half of the battery, the maximum capacity of the battery is only 50%.

[0078] The memory is responsible for the information storage of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and the storage of the highest profit margin in the industry.

[0079] The processing center is responsible for the information transmission of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and memory. It is the system hub center and compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the vehicle is transmitted to the alarm and notified to continue charging; and compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is equal to the standard, the vehicle continues to drive; if it is lower than the standard, the vehicle is transmitted to the alarm and notified to repair the vehicle.

[0080] See also Figure 2 As shown, the mileage confirmation module includes a distance confirmation unit, a road layout unit, and a charging distribution unit. It obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through networking as the control basis for subsequent charging, and transmits it to the charging planning module.

[0081] Furthermore, the distance confirmation unit obtains the travel route and its distance, the stations or service areas passed through the target location through map navigation, so as to facilitate the subsequent road layout, and transmits them to the road layout unit; the road layout unit obtains the distance and distribution points of each straight flat road, turning road, uphill steep road, and downhill steep road that the target route will experience through the highway management system, and transmits them to the charging distribution unit; the charging distribution unit obtains the specific location points and interval distances of various charging stations or charging piles within the target distance in a timely manner through networking with the network map, so as to facilitate subsequent timely charging.

[0082] See also Figure 3 As shown, the charging planning module includes a battery information unit, a charging plan unit, a vehicle speed reservation unit, and a trajectory design unit, which is responsible for planning and designing the vehicle operation trajectory according to the destination road condition information to meet the normal supply of vehicle battery power, as a control basis for subsequent charging, and passed to the capacity acquisition module.

[0083] Furthermore, the battery information unit obtains the current actual available power and warning power of the current vehicle battery through the set battery tester to facilitate the selection of subsequent charging plans, and transmits it to the charging plan unit; the charging plan unit selects downhill charging, charging pile charging or mixed charging according to the downhill road information and charging station information within the target distance to ensure the minimum charging cost, and transmits it to the speed reservation unit; the speed reservation unit obtains the speed of each vehicle in the section by networking with the highway system speed database and matches it to obtain the predetermined speed of each section, and transmits it to the trajectory design unit; the trajectory design unit designs an operation trajectory diagram of driving, downhill charging, and charging pile charging according to the road conditions within the target distance, as a basis for future vehicle driving and charging.

[0084] See also Figure 4 As shown, the capacity acquisition module includes a voltage detection unit, a current detection unit, a temperature detection unit, a capacity calculation unit, and an energy integration unit. The actual battery capacity of the vehicle during driving is obtained through the set intelligent sensor to analyze whether the battery needs to be charged and transmit it to the processing center.

[0085] Furthermore, the voltage detection unit obtains the actual voltage of the current vehicle battery through the voltage sensing element, which is proportional to the battery capacity, so as to estimate the battery capacity and transmit it to the current detection unit; the current detection unit obtains the actual current of the current vehicle battery through the current sensing element to determine the current charge and discharge state of the battery and transmit it to the temperature detection unit; the temperature detection unit obtains the actual temperature of the current vehicle battery through the temperature sensing element to determine the current charge and discharge state of the battery and transmit it to the capacity calculation unit; the capacity calculation unit obtains the current battery capacity according to the battery capacity calculation formula "C = I * T, C is the battery capacity (Ah), I is the battery discharge current (A), T is the actual battery discharge time (h)", and transmits it to the energy integration unit; the energy integration unit obtains the battery charge and discharge energy according to the battery energy calculation formula "E = C * U * I * T ÷ 1000, E is the battery energy (kWh), C is the battery capacity (Ah), U is the battery voltage (V), I is the battery current (A), T is the battery used time (s)" to determine the current battery charge and discharge state.

[0086] See also Figure 5 As shown, the charging implementation module includes a flat road speed control unit, a downhill charging unit, an uphill acceleration unit, a low speed stabilization unit, and a power station charging unit, which is responsible for notifying the driver to prepare for charging in a predetermined manner according to the battery track based on the battery power level, so as to facilitate the normal charging of the vehicle battery and pass it to the vehicle maintenance module.

[0087] Furthermore, the flat road speed control unit drives at a normal speed at a preset flat road speed, obtains the maximum speed with the minimum power, maximizes the power usage to save power, and transmits it to the downhill charging unit; the downhill charging unit obtains the preset downhill speed and running inertia through the slope sensor to perform gliding charging, so that the gliding speed is offset by the charging speed to increase the power and extend the endurance, and transmits it to the uphill acceleration unit; the uphill acceleration unit obtains the preset uphill speed through the slope sensor to ensure the maximum efficiency of battery use, reduce the minimum loss of battery power and save power, and transmits it to the low-speed stabilization unit; the low-speed stabilization unit obtains the low-speed driving road through a high-definition camera and reduces the driving speed and safety stability to achieve the purpose of saving power, and transmits it to the power station charging unit; the power station charging unit charges for a predetermined time through a predetermined charging pile to reach a predetermined battery capacity, which not only ensures the shortest driving time but also maximizes the battery life, and transmits it to the processing center.

[0088] See also Figure 6 As shown, the vehicle maintenance module includes a load detection unit, a load detection unit, a motor detection unit, a system detection unit, and a battery detection unit. The abnormal detection data of various functions of the vehicle are obtained through the vehicle intelligent detector to determine the abnormal problems of the vehicle and repair or replace the battery to ensure the normal operation of the vehicle.

[0089] Furthermore, the load detection unit obtains whether the total weight of the vehicle exceeds the maximum load of the vehicle through the load sensor. If it is overweight, an alarm is issued to prompt the vehicle to reduce the weight. If it is not overweight, the information is passed to the load detection unit; the load detection unit obtains whether the vehicle mileage exceeds the standard through the load sensor. If it is exceeded, an alarm is issued to prompt the vehicle to stop and rest. If it is not exceeded, the information is passed to the motor detection unit; the motor detection unit obtains whether the service life or wear degree of the vehicle motor exceeds the standard through the motor life tester. If it is exceeded, an alarm is issued to prompt the motor to be replaced. If it is not exceeded, the information is passed to the system detection unit; the system detection unit obtains whether the operating status of the vehicle battery management system is normal through the BMS tester. If it is abnormal, an alarm is issued to prompt the battery system to be replaced. If it is normal, the information is passed to the battery detection unit; the battery detection unit obtains whether the service life or battery loss status of the vehicle battery is normal through the battery tester. If it is abnormal, an alarm is issued to prompt the battery to be replaced. If it is normal, the vehicle should be scrapped.

[0090] How the system works:

[0091] When the vehicle is driving, the mileage confirmation module obtains the mileage distance of the driving section, road layout, and destination road condition information of the charging station distribution through the Internet as the control basis for subsequent charging, and passes it to the charging planning module; the charging planning module plans and designs the vehicle's running trajectory according to the destination road condition information to meet the normal supply of vehicle battery power, as the control basis for subsequent charging, and passes it to the capacity acquisition module; then the capacity acquisition module obtains the actual battery capacity of the vehicle during driving through the set intelligent sensor, and passes it to the processing center; the processing center compares the actual battery capacity with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, it is passed to the alarm and notifies the continuous charging vehicle;

[0092] Then the battery charging module notifies the driver through the battery trajectory according to the battery power to prepare for charging in a predetermined manner, so as to facilitate the normal charging of the vehicle battery, and transmits it to the vehicle optimization module, including: controlling the flat road speed control unit to drive at a normal speed at a preset flat road speed, obtaining the maximum speed with the minimum power, maximizing the use of power to save power, and transmitting it to the downhill charging unit; then the downhill charging unit obtains the preset downhill speed and running inertia through the slope sensor to perform gliding charging, so that the gliding speed and the charging speed are offset to increase the power and extend the endurance, and transmit it to the uphill acceleration unit; controlling the uphill acceleration unit to obtain the preset uphill speed through the slope sensor to ensure the maximum efficiency of battery use and reduce The battery power is minimized to save power and is transmitted to the low-speed stabilization unit; the low-speed stabilization unit then obtains the low-speed driving road through a high-definition camera and reduces the driving speed and safety stability to ensure the comfort of the vehicle and save power, and transmits it to the power station charging unit; secondly, the power station charging unit charges the vehicle for a predetermined time through a predetermined charging pile to reach the predetermined battery capacity, which not only ensures the shortest driving time but also maximizes the battery life, and transmits it to the processing center; the processing center compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is equal to the standard, the vehicle continues to drive; if it is lower than the standard, it is transmitted to the alarm and notifies the vehicle for maintenance;

[0093] The vehicle maintenance module is controlled to obtain abnormal detection data of various functions of the vehicle through the vehicle intelligent detection equipment to determine the abnormal problems of the vehicle and repair or replace the battery, including: controlling the load detection unit to obtain whether the total weight of the vehicle exceeds the maximum load of the vehicle through the load sensor, if it is overweight, an alarm is issued to prompt weight reduction, if it is not overweight, it is transmitted to the load detection unit; then the load detection unit obtains whether the vehicle mileage exceeds the standard through the load sensor, if it exceeds the standard, an alarm is issued to prompt the vehicle to stop and rest, if it does not exceed the standard, it is transmitted to the motor detection unit; controlling the motor detection unit to obtain whether the service life or wear degree of the vehicle motor exceeds the standard through the motor life tester, if it exceeds the standard, an alarm is issued to prompt the replacement of the motor, if it does not exceed the standard, it is transmitted to the system detection unit; then the system detection unit obtains whether the operation status of the vehicle battery management system is normal through the BMS tester, if it is not normal, an alarm is issued to prompt the replacement of the battery system, if it is normal, it is transmitted to the battery detection unit; controlling the battery detection unit to obtain whether the service life or battery loss status of the vehicle battery is normal through the battery tester, if it is not normal, an alarm is issued to prompt the replacement of the battery, if it is normal, the vehicle should be scrapped.

[0094] When the driver or vehicle manager is outdoors or out of town, he or she can use a smart phone to automatically connect to the wireless communication module within the range of a wireless network or the Internet to control or monitor the vehicle battery power control status, thereby realizing intelligent and networked management and improving the efficiency of vehicle battery management.

[0095] See also Figure 7 As shown, the present invention also provides an electric vehicle automatic cruising range control method, which is applied to an electric vehicle automatic cruising range control system, and the method comprises the following steps:

[0096] S10, when the vehicle is traveling, the mileage confirmation module obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through the network as the control basis for subsequent charging, and transmits it to the charging planning module;

[0097] See also Figure 8 As shown, the step S10 includes the following steps:

[0098] S11, the distance confirmation unit obtains the travel route and its distance, the stations or service areas passed through the target location through map navigation, so as to facilitate the subsequent road layout, and transmits it to the road layout unit;

[0099] To further explain, the distance on the map between the departure point and the destination is obtained according to the map navigation destination, and then the actual distance between the two points of the departure point and the destination is obtained according to the actual distance calculation formula "actual distance = distance on the map / scale". This distance is most suitable for the distance of aircraft navigation, because the route is straight and the road is curved. The complete actual distance between the two places must be obtained by summing the actual distances of each road in the road management system and combining it with the satellite positioning system. The distance displayed in the driving recorder of the test vehicle or running vehicle of the road system must be uploaded to the road management system to obtain the actual distance between the two places. All of them are accumulated from the mileage data of multiple operations of different vehicles. The service areas, gas stations, charging stations and other stations in the middle are all obtained from historical experience data and the location sharing of these stations in the network system.

[0100] S12, the road layout unit obtains the distances and distribution points of each straight flat road, turning road, uphill steep road, and downhill steep road that the target route will experience through the highway management system, and transmits them to the charging distribution unit;

[0101] Furthermore, the highway management system is based on the distances and distribution points of each straight flat road, curved road, uphill steep road and downhill steep road of each section obtained by shooting through a satellite system after the highway is opened, and is obtained through the sharing of historical accumulated data obtained through the operation of the map system and the navigation system by different vehicles. The map system and the navigation system also continuously enrich the identification and data of the operating routes as a reference for planning before subsequent vehicles travel.

[0102] S13. The charging distribution unit obtains the specific location points and the distances between various charging stations or charging piles within the target route in a timely manner by connecting to the network map to facilitate subsequent timely charging.

[0103] To further explain, after each charging pile is established, it is marked and uploaded into the map system, and the specific location points and interval distances of various charging stations or charging piles are obtained by combining the satellite system to upload and share, and the charging history experience data obtained through the operation of the map system and navigation system by different vehicles is shared. In this way, the map system and navigation system continuously enrich the identification data of various vehicle charging operations, which provides a reference basis for subsequent vehicle charging plan analysis and actual charging.

[0104] S20, the charging planning module plans and designs the vehicle running trajectory according to the destination road condition information to ensure the normal supply of vehicle battery power, which serves as the control basis for subsequent charging and is transmitted to the capacity acquisition module;

[0105] See also Fig. 9 As shown, the step S20 includes the following steps:

[0106] S21, the battery information unit obtains the current actual available power and warning power of the current vehicle battery through the set battery tester to facilitate the selection of subsequent charging plans, and transmits it to the charging plan unit;

[0107] To further explain, the battery tester is used to detect the current actual available power, actual maximum capacity, actual available power, and warning power of the battery; the warning power refers to the difference between the current battery power and the power required within the distance to the next charging point; if it is lower than the warning power, the vehicle cannot travel to the next charging point, so the current battery power must be higher than the warning power.

[0108] S22, the charging planning unit selects downhill charging, charging pile charging or mixed charging according to the downhill road information and charging station information within the target distance to ensure the lowest charging cost, and transmits it to the vehicle speed reservation unit;

[0109] To further explain, the map navigation system is used to obtain information on all charging points within the target distance, including the number, location, distance, charging price, gun heads and their available number of all charging piles, and the number, distance, slope length, and slope height of all downhill roads; when there are multiple downhill roads within a target distance, the downhill roads are planned to be charged until fully charged, and the remaining part is charged at the nearest charging pile; when there is no downhill road within a target distance, charging is carried out with a charging pile; when there is neither a downhill road nor a charging pile within a target distance, generally in remote rural areas, the battery must be fully charged before departure. If the existing battery life is insufficient, a spare battery pack is selected to ensure battery life.

[0110] S23, the vehicle speed presetting unit obtains the vehicle speed of each vehicle in the road section by connecting to the highway system vehicle speed database and performs matching to obtain the pre-set vehicle speed of each road section, and transmits it to the trajectory design unit;

[0111] It is further explained that the speed of the same vehicle on different flat roads is different, based on the premise of planned energy saving; the charging speed on different downhill roads is also different. Due to the different slopes of different downhill roads, the steeper the slope, the faster the charging speed and the more power can be obtained; otherwise, if the speed is too fast, the battery loss will be too great, reducing the endurance.

[0112] S24. The trajectory design unit designs an operation trajectory diagram for driving, downhill charging, and charging pile charging according to the road conditions within the target distance, which serves as a basis for future vehicle driving and charging.

[0113] Further explanation: according to the composition of the selected driving route and combined with the vehicle condition and the historical driving trajectory of the route as a predetermined trajectory map, by obtaining the driving speed and the maximum speed and minimum speed of each section of the road of similar matching vehicles, the standard speed and state of the vehicle's driving, including flat road speed, uphill speed, downhill charging load, speed on low-speed road, are used as the basis for subsequent actual driving of the vehicle to achieve maximum power saving; if starting or smoothly energizing the door on a flat road, reasonable braking, speed control driving, etc., the cruising range can be extended, otherwise the cruising range will be shortened.

[0114] S30, the capacity acquisition module obtains the actual battery capacity of the vehicle during driving through the set intelligent sensor, so as to analyze whether the battery needs to be charged and transmit it to the processing center;

[0115] See also Fig.10 As shown, the step S30 includes the following steps:

[0116] S31, the voltage detection unit obtains the actual voltage of the current vehicle battery through the voltage sensing element, which is proportional to the battery capacity, to estimate the battery capacity, and transmits it to the current detection unit;

[0117] Furthermore, the voltage sensing element is a sensing element with a voltage detection function in an intelligent sensor, which is responsible for converting the power parameters of the vehicle battery into DC current, DC voltage and isolating and outputting analog signals or digital signals; or a voltage transformer is used instead of a voltage sensing device as a sensing element to detect when the battery voltage drops to a usable low voltage, and then converts it into a DC voltage that is linearly related to the measured voltage through a related circuit and sends it to the data acquisition system and A / D converter; when the battery voltage is a DC voltage, a voltage divider resistor is used as a sensing element, and the resistance value connected in parallel at both ends of the measured battery should be large enough (generally, the power consumption should be controlled to be less than 1 / 1000 of the rated power of the measured motor) to reduce the impact of the loss generated by the loop current on the measured value. For low-voltage motors, it should be around 10KΩ, and a part of the voltage of the measured battery voltage on the resistor is taken as a signal, which is directly sent to the data acquisition system and A / D converter to obtain the voltage value.

[0118] S32, the current detection unit obtains the actual current of the current vehicle battery through the current sensing element to determine the current charge and discharge state of the battery, and transmits it to the temperature detection unit;

[0119] Furthermore, the current sensing element is a sensing element with current detection function in an intelligent sensor, which is responsible for detecting the current size information of the battery and converting the detected current information into an electrical signal or other required form of information output that meets certain standards according to a certain rule to meet the requirements of information transmission, processing, storage, display, recording and control, so as to facilitate identification and reading.

[0120] S33, the temperature detection unit obtains the actual temperature of the current vehicle battery through the temperature sensing element to determine the current charge and discharge state of the battery, and transmits it to the capacity calculation unit;

[0121] Furthermore, the temperature sensing element is a sensing element with a temperature detection function of an intelligent sensor. It uses a bimetallic strip composed of two pieces of metal with different expansion coefficients pasted together to produce a corresponding expansion and extension reaction after the ambient temperature changes to perform signal conversion; as the temperature changes, the metal tube expands more than the other metal, causing the metal sheet to bend, and its linear expansion curvature can be converted into an output signal; for different metals, the resistance value changes differently for every degree of temperature change, and the resistance value can be directly used as an output signal.

[0122] S34, the capacity calculation unit obtains the current battery capacity according to the battery capacity calculation formula "C = I*T, C is the battery capacity (Ah), I is the battery discharge current (A), T is the battery actual discharge time (h)", and transmits it to the energy integration unit;

[0123] It is further explained that the battery current I and the battery usage time T are both known data obtained from the above detection; the battery capacity can be divided into: the actual capacity of the amount of electricity actually discharged by the battery under specific conditions, the theoretical capacity of the maximum amount of electricity that the battery should discharge under ideal conditions, and the rated capacity of the minimum capacity specified during design or production. For example, if a battery is discharged at a constant current of 500mA for 3 hours, then the capacity of the battery is 500mA multiplied by 3 hours, that is, 1.5Ah; if a battery is discharged at a current of 5A for 3 hours, then the capacity of the battery is 15Ah.

[0124] S35. The energy integration unit obtains the battery charging and discharging energy according to the battery energy calculation formula "E = C*U*I*T÷1000, E is the battery energy (kWh), C is the battery capacity (Ah), U is the battery voltage (V), I is the battery current (A), and T is the battery usage time (s)" to determine the current battery charging and discharging state.

[0125] It is further explained that the battery capacity C, battery voltage V, battery current I, and battery usage time T are all known data obtained by the above detection; the energy integral value of the discharge varies with the charging and discharging state of the battery, and is affected by the battery capacity, battery voltage, battery current, battery usage time, and battery energy density, wherein the battery energy density is the ratio of battery energy to volume, which is used to measure the battery capacity and endurance in practical applications; for example: if the capacity of a battery is 2Ah, the battery voltage is 12V, the battery current is 4A, and the battery has been used for 1h, then the energy of this battery = 2*12*4*3600÷1000 = 345.6kWh.

[0126] S40, the processing center compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the alarm is transmitted to the alarm device and the charging is continued;

[0127] Furthermore, the battery capacity charging threshold standard refers to the standard value of the amount of electricity that the battery must be charged within the expected mileage or section of travel, including the amount of electricity within the mileage of flat road travel and the amount of electricity within the section. The battery capacity charging threshold is preset according to the route pre-planned before travel. The battery capacity charging threshold for each route is different, and the battery capacity charging threshold for each mileage of travel is also different. For example, for a route of the same mileage, if there are more flat roads and downhill roads, the battery capacity charging threshold should be set larger, and if there are more uphill roads, the battery capacity charging threshold should be set smaller.

[0128] S50, the charging implementation module notifies the driver to prepare for charging in a predetermined manner according to the battery power through the battery track, so as to facilitate normal charging of the vehicle battery, and transmits it to the vehicle maintenance module;

[0129] See also Fig.11 As shown, the step S50 includes the following steps:

[0130] S51, the flat road speed control unit drives at a normal speed at a preset flat road speed, obtains a maximum speed with a minimum amount of electricity, maximizes the use of electricity to save electricity, and transmits it to the downhill charging unit;

[0131] To further explain, the vehicle acceleration control system is used to continuously accelerate the vehicle until it reaches the maximum inertia, so that the vehicle speed reaches the maximum speed with the minimum power, and is affected by the driver's operating level, experience, psychological state and other driver conditions; vehicle conditions such as engine performance, tire condition, vehicle maintenance condition; road physical conditions such as the flatness or ruggedness of the road, road conditions, traffic signs and markings, traffic conditions such as traffic congestion, traffic flow, speed limits, and no-entry restrictions; temperature, wind force, visibility and other factors. For example: if the road surface is flat, the vehicle speed will be faster, the resistance will be small, and the inertia will be large if the load is not overweight. If it is too light, the vehicle speed inertia will be small. If the ambient temperature inside and outside the vehicle is appropriate, the vehicle speed will be much faster. If it is a tailwind and the wind is strong, the vehicle speed will be much faster. If the light radiation intensity outside the vehicle is high, the vehicle speed will naturally be slower. If it is foggy or the light is weak at night, the vehicle speed will naturally be slower. Therefore, natural conditions also affect the vehicle speed.

[0132] S52, the downhill charging unit obtains the preset downhill speed and running inertia through the slope sensor to perform gliding charging, so that the gliding speed is offset by the charging speed to increase the power and extend the endurance, and transmits it to the uphill acceleration unit;

[0133] Furthermore, the slope sensor is a sensor that measures the tilt angle of the vehicle body when the vehicle is going downhill or uphill. It is based on the influence of gravity acceleration on the tilt of the vehicle body. It consists of two sensitive elements. The two elements measure the tilt angle of the vehicle body in the x and y axis directions respectively, resulting in the difference in capacitance, resistance, voltage or current between the two elements, and obtain the tilt angle of the vehicle body. When the vehicle is going downhill, gravity compresses the sensitive element in the front direction of the vehicle, while the sensitive element in the rear direction of the vehicle is pulled up. When the vehicle is going uphill, the two sensitive elements are opposite; when the vehicle goes downhill, its sensor notifies the brake system to start braking, and at the same time notifies the power generation system to start generating electricity. Traditional electric vehicles control the speed of the vehicle when going downhill by stepping on the brakes, and the kinetic energy generated by the inertia of the downhill road is not used for power generation, which is a great waste.

[0134] S53, the uphill acceleration unit obtains the preset uphill speed through the slope sensor to ensure the maximum efficiency of battery use, reduce the minimum loss of battery power and save power, and transmits it to the low-speed stabilization unit;

[0135] To further explain, as soon as the vehicle goes uphill, the sensor will notify to start automatic acceleration, and accelerate with the power within the reserve plan and the maximum speed allowed to ensure sufficient power supply. Sudden high-speed acceleration is prohibited to light up with greater loss. All are accelerated evenly and gradually, with the maximum speed obtained with the minimum power, and the inertia principle of the vehicle is used for driving. When it starts to enter a flat road or go downhill, the slope sensor will automatically control the deceleration or charging. If there is no even natural acceleration on the uphill road but the accelerator is stepped on suddenly, the battery will be greatly consumed and the battery life will be reduced.

[0136] S54, the low-speed stabilization unit obtains the low-speed driving road through the high-definition camera and reduces the driving speed and safety stability to ensure the driving comfort of the vehicle and achieve the purpose of saving electricity, and transmits it to the power station charging unit;

[0137] To further explain, the category of the road being traveled (expressway, first-class highway, second-class highway, third-class highway, fourth-class highway, among which expressways include toll expressways, free expressways, and closed expressways) is obtained through camera shooting, and the actual vehicle speed is automatically controlled according to the speed standard of the preset road category, so as to save electricity and ensure endurance, while ensuring the smooth operation of the vehicle; if the vehicle is accelerated, not only will the operation of the vehicle be unstable, but the uneven road surface will also bring running resistance, thereby consuming a lot of electricity; at the same time, turning and braking will also seriously damage the energy consumption of movement.

[0138] S55, the power station charging unit charges the battery for a predetermined time through a predetermined charging pile to reach a predetermined battery capacity, thereby minimizing the driving time and maximizing the battery life, and transmits the result to the processing center;

[0139] To further explain, when there is only one charging station within the target distance, the battery must be fully charged to ensure endurance, but charging time cannot be saved; when there are multiple planned charging stations within the target distance, charging is carried out according to the planned charging time to ensure that the vehicle battery has sufficient capacity for endurance within the target distance; if effective charging planning is not carried out, the vehicle can be fully charged at the charging station, but cannot be charged on the downhill road. Since charging at the charging station costs money, while charging on the downhill road is free, advance charging planning is carried out to charge as much as possible on the downhill road within the target distance for free, which can also save time for charging at the charging station. The rest can be charged at the charging station for a fee, which can minimize the cost of driving, ensure battery life, and save charging time.

[0140] S56. The processing center compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is equal to the standard, the vehicle continues to drive; if it is lower than the standard, the alarm is transmitted to the vehicle and the vehicle maintenance is notified.

[0141] Furthermore, the maximum storage capacity standard of the battery refers to the maximum capacity that the battery can currently store, that is, the actual capacity of the battery. After the battery has been used for a certain period of time, the actual capacity of the battery is less than the original factory capacity of the battery. As the battery usage time continues to be extended, the actual capacity of the battery is far lower than the original factory capacity of the battery.

[0142] S60: The vehicle maintenance module obtains abnormal detection data of various functions of the vehicle through the vehicle intelligent detector to determine the abnormal problem of the vehicle and repair or replace the battery to ensure the normal operation of the vehicle.

[0143] See also Fig.12 As shown, the step S60 includes the following steps:

[0144] S61, the load detection unit obtains whether the total weight of the vehicle exceeds the maximum load of the vehicle through the load sensor, and if it is overweight, an alarm is issued to prompt weight reduction, and if it is not overweight, the alarm is transmitted to the load detection unit;

[0145] Furthermore, the load sensor is a measuring device that converts a mass signal into a measurable electrical signal output. When the weight change of the cargo or passengers on the vehicle causes the deformation of the leaf spring to produce a displacement, the load is obtained by measuring the displacement and converting it into a voltage output using a related circuit. It is divided into a pressure-bearing load sensor and a bridge displacement sensor; wherein, the pressure-bearing load sensor is to directly attach the strain gauge to the four front, rear, left and right leaf springs between the car body and the axle, or to the vehicle beam, axle and other positions connected to the leaf spring, and its elastic deformation is fed back through an auxiliary digital circuit according to different loads to perform load detection to obtain actual weight data; the bridge displacement sensor converts the relative displacement of the vehicle beam and the axle under different load conditions, and performs multi-stage calculations according to the relative linear relationship between the displacement and the load to obtain the vehicle load weight; if the vehicle personnel or cargo are overweight, the energy consumption of the vehicle will increase and the use of battery capacity will be shortened.

[0146] S62, the load detection unit obtains whether the vehicle mileage exceeds the standard through the load sensor, and if so, an alarm is issued to prompt the vehicle to stop and rest; if not, the alarm is transmitted to the motor detection unit;

[0147] Furthermore, the load sensor, also called the odometer sensor, refers to a sensor installed on the differential or half-axle to detect the number of rotations of the vehicle tires to obtain the mileage, which can obtain the safe mileage of the vehicle; the safe mileage refers to the safe distance for continuous driving of the vehicle determined by the distance the vehicle has traveled, so that the vehicle condition can be protected to the maximum extent, and is determined based on comprehensive factors such as the age of the vehicle, total mileage, overall vehicle condition, actual service life of the battery, remaining capacity, etc. The safe mileage of the same vehicle with different ages is different, and the safe mileage of different vehicles of the same age is also different; if the vehicle is currently traveling beyond the safe mileage, the battery loss is large, which will shorten the battery life.

[0148] S63, the motor detection unit obtains whether the service life or wear degree of the vehicle motor exceeds the standard through the motor life tester, and if so, an alarm is issued to prompt the replacement of the motor; if not, the alarm is transmitted to the system detection unit;

[0149] Furthermore, the motor life tester refers to a detection device that obtains the service life and usable life of the motor by detecting the use time, number of cycles, and current voltage and current of the motor; if the motor is not used for a long time, but the coil, rotor, and stator have serious quality failures, the current voltage and current are detected to alarm in advance to prompt the motor to be scrapped, and the motor will automatically stop running when it expires; if the use time of the motor expires or the number of cycles reaches the limit, an automatic alarm will be issued to prompt the motor to be scrapped and stop running; if a good quality motor is selected, energy loss can be reduced and battery life can be extended, and if a poor quality motor is selected, energy loss will increase and battery life will be shortened.

[0150] S64, the system detection unit obtains whether the operating status of the vehicle battery management system is normal through the BMS tester, and if it is abnormal, an alarm is issued to prompt the replacement of the battery system, and if it is normal, it is transmitted to the battery detection unit;

[0151] Furthermore, the BMS tester is a professional equipment for testing and debugging battery management systems. It can perform functional tests such as battery pack balancing, battery charging and discharging, and temperature protection. It can quickly diagnose various faults in the battery management system, help drivers discover and solve problems in a timely manner, and can adjust the parameters of the battery management system according to the test results to meet the actual needs of the battery. If a battery management system fails, it cannot monitor the battery status optimization and its use, and cannot effectively control the charging and discharging of the power supply. The battery is full but the charging cannot be stopped automatically. The battery actually needs to be charged but the prompt is that it is full and the power cannot be charged. This will damage the battery.

[0152] S65. The battery detection unit obtains whether the service life or battery loss status of the vehicle battery is normal through a battery tester. If it is abnormal, an alarm is issued to prompt the battery to be replaced. If it is normal, the vehicle should be scrapped.

[0153] Furthermore, the battery tester refers to a testing device that detects overcurrent, voltage, capacity, internal resistance, charging and discharging temperature, and battery cycle life of a battery or battery pack, and provides a data curve chart; the capacity of the battery pack directly determines the vehicle's cruising range, and a large-capacity battery pack can be selected to effectively increase the cruising range; the capacity of a ternary lithium battery of the same volume is much larger than that of a lithium iron phosphate battery, and it has great advantages in energy density and cycle life. Choosing a new type of lithium battery can significantly improve the cruising range. As long as the safety protection measures meet the vehicle's use requirements, it can be used, such as Tesla has been using ternary lithium batteries.

[0154] It is further explained that the various steps are displayed in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this document, there is no strict order restriction for the execution of these steps. These steps can also be executed according to other orders, and some steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed and completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0155] An electric vehicle automatic cruising range control system provided by the present invention also includes a computer device and a computer-readable storage medium; the computer device includes a memory and various functional modules, the memory stores a computer program, and the various functional modules implement the steps of any one of the above-mentioned electric vehicle automatic cruising range control methods when executing the computer program; the computer-readable storage medium stores a computer program, and the computer program implements the steps of any one of the above-mentioned electric vehicle automatic cruising range control methods when executed by the various functional modules.

[0156] It is further explained that the computer-readable storage medium includes a memory, which can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as the program and instructions corresponding to an electric vehicle automatic endurance control method in an embodiment of the present invention, including information transmission instructions of each module; the memory executes various functional applications and data processing of each module by running the stored non-volatile software programs and instructions, that is, implements an electric vehicle automatic endurance control method in the above method embodiment; one or more units are stored in the memory, and when executed by the one or more modules, an electric vehicle automatic endurance control method in any of the above method embodiments is executed; the computer-readable storage medium stores computer executable instructions, which are executed by one or more modules, and can also be an electric vehicle automatic endurance control method in any of the above method embodiments.

[0157] To further illustrate, the present invention is described according to the content implemented by a software program of an electric vehicle automatic cruising range control system. Each electric vehicle automatic cruising range control method is divided into several modules or units to implement the software program instructions generated by each step. The software program instructions include the above-mentioned electric vehicle automatic cruising range control method.

[0158] Further explanation: the contents described above in the present invention are all in accordance with the "CHARGER ＿It is written based on the contents implemented by software copyrights such as NIMH.ASM system platform (version number: V1.0, registration date: 2021.1.28.)", "Electric vehicle charger charging status real-time monitoring system (version number: V1.0, registration date: 2023.8.9.)", "Electric vehicle charger data communication monitoring system (version number: V1.0, registration date: 2023.8.9.)", and "Electric vehicle wireless charging system (version number: V1.0, registration date: 2023.8.10.)".

[0159] The present invention also provides an electric vehicle automatic cruising range control device, which is implemented by using the above-mentioned electric vehicle automatic cruising range control system and the above-mentioned electric vehicle automatic cruising range control method.

[0160] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application can be modified or replaced by equivalents, and all should be included in the scope of protection of the present application.

Claims

1. An electric vehicle automatic cruising control system, characterized in that : The endurance control system includes a mileage confirmation module, a charging planning module, a capacity acquisition module, a battery charging module, a vehicle optimization module, a wireless communication module, an alarm, a memory, a processing center, and a smart phone; the mileage confirmation module, the charging planning module, the capacity acquisition module, the battery charging module, the vehicle optimization module, the wireless communication module, the alarm, and the memory are respectively connected to the processing center; the smart phone is automatically connected to the wireless communication module within the range of a wireless network or the Internet; The wireless communication module is provided with a wireless network unit, which is responsible for sending and receiving wireless network signals and automatically networking with a smart phone within the range of a wireless network or the Internet; The alarm compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory. If the capacity is equal to the threshold, the alarm automatically sounds an alarm and notifies the vehicle to continue charging; and compares the actual storage capacity of the battery with the battery maximum storage capacity standard stored in the memory. If the capacity is lower than the standard, the alarm automatically sounds an alarm and notifies the vehicle for maintenance. The memory is responsible for the information storage of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and the storage of the highest profit margin in the industry; The processing center is responsible for the information transmission of the mileage confirmation module, charging planning module, capacity acquisition module, battery charging module, vehicle optimization module, wireless communication module, alarm, and memory. It is the hub of the system and compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the alarm is transmitted to the alarm and the vehicle is notified to continue charging; and compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is higher than the standard, the vehicle continues to drive; if it is lower than the standard, the alarm is transmitted to the alarm and the vehicle is notified to be repaired; The mileage confirmation module includes a distance confirmation unit, a road layout unit, and a charging distribution unit, which obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through networking as the control basis for subsequent charging, and transmits it to the charging planning module; The charging planning module includes a battery information unit, a charging plan unit, a vehicle speed setting unit, and a trajectory design unit, which is responsible for planning and designing the vehicle running trajectory according to the destination road condition information to meet the normal supply of vehicle battery power, as a control basis for subsequent charging, and passing it to the capacity acquisition module; The capacity acquisition module includes a voltage detection unit, a current detection unit, a temperature detection unit, a capacity calculation unit, and an energy integration unit. The actual battery capacity of the vehicle during driving is acquired through the intelligent sensors provided, so as to analyze whether the battery needs to be charged and transmit the information to the processing center. The charging implementation module includes a flat road speed control unit, a downhill charging unit, an uphill acceleration unit, a low speed stabilization unit, and a power station charging unit, which is responsible for notifying the driver to prepare for charging in a predetermined manner according to the battery power through the battery track, so as to facilitate the normal charging of the vehicle battery and pass it to the vehicle maintenance module; The vehicle maintenance module includes a load detection unit, a load detection unit, a motor detection unit, a system detection unit, and a battery detection unit. The abnormal detection data of various functions of the vehicle are obtained through a vehicle intelligent detector to determine abnormal problems of the vehicle and repair or replace the battery to ensure normal operation of the vehicle.

2. An electric vehicle automatic cruising range control method, applied to an electric vehicle automatic cruising range control system, characterized in that The method described comprises the following steps: S10, when the vehicle is traveling, the mileage confirmation module obtains the mileage distance of the driving section, the road layout, and the destination road condition information of the charging station distribution through the network as the basis for subsequent charging planning, and transmits it to the charging planning module; S20, the charging planning module plans and designs the vehicle running trajectory according to the destination road condition information to ensure the normal supply of vehicle battery power, which serves as the control basis for subsequent charging and is transmitted to the capacity acquisition module; S30, the capacity acquisition module obtains the actual battery capacity of the vehicle during driving through the set intelligent sensor, so as to analyze whether the battery needs to be charged and transmit it to the processing center; S40, the processing center compares the actual capacity of the battery with the battery capacity charging threshold standard stored in the memory: if it is lower than the threshold, the vehicle continues to drive; if it is equal to the threshold, the alarm is transmitted to the alarm device and the charging is continued; S50, the battery charging module notifies the driver to prepare for charging in a predetermined manner according to the battery power through the battery track, so as to facilitate normal charging of the vehicle battery, and transmits it to the vehicle optimization module; S60, the vehicle maintenance module obtains abnormal detection data of various functions of the vehicle through the vehicle intelligent detection equipment to determine the abnormal problem of the vehicle and repair or replace the battery to ensure the normal operation of the vehicle; The step S10 comprises the following steps: S11, the distance confirmation unit obtains the travel route and its distance, the stations or service areas passed through the target location through map navigation, so as to facilitate the subsequent road layout, and transmits it to the road layout unit; S12, the road layout unit obtains the distances and distribution points of each straight flat road, turning road, uphill steep road, and downhill steep road that the target route will experience through the highway management system, and transmits them to the charging distribution unit; S13, the charging distribution unit timely obtains the specific location points and interval distances of various charging stations or charging piles within the target route by connecting to the network map, so as to facilitate subsequent timely charging; The step S20 comprises the following steps: S21, the battery information unit obtains the current actual available power and warning power of the current vehicle battery through the set battery tester to facilitate the selection of subsequent charging plans, and transmits it to the charging plan unit; S22, the charging planning unit selects downhill charging, charging pile charging or mixed charging according to the downhill road information and charging station information within the target distance to ensure the lowest charging cost, and transmits it to the vehicle speed reservation unit; S23, the vehicle speed presetting unit obtains the vehicle speed of each vehicle in the road section by connecting to the highway system vehicle speed database and performs matching to obtain the pre-set vehicle speed of each road section, and transmits it to the trajectory design unit; S24, the trajectory design unit designs an operation trajectory diagram of driving, downhill charging, and charging pile charging according to the road conditions within the target distance, which serves as a basis for future vehicle driving and charging; The step S30 comprises the following steps: S31, the voltage detection unit obtains the actual voltage of the current vehicle battery through the voltage sensing element, which is proportional to the battery capacity, to estimate the battery capacity, and transmits it to the current detection unit; S32, the current detection unit obtains the actual current of the current vehicle battery through the current sensing element to determine the current charge and discharge state of the battery, and transmits it to the temperature detection unit; S33, the temperature detection unit obtains the actual temperature of the current vehicle battery through the temperature sensing element to determine the current charge and discharge state of the battery, and transmits it to the capacity calculation unit; S34, the capacity calculation unit obtains the current battery capacity according to the battery capacity calculation formula "C = I*T, C is the battery capacity (Ah), I is the battery discharge current (A), T is the battery actual discharge time (h)", and transmits it to the energy integration unit; S35. The energy integration unit obtains the battery charging and discharging energy according to the battery energy calculation formula "E = C*U*I*T ÷ 1000, E is the battery energy (kWh), C is the battery capacity (Ah), U is the battery voltage (V), I is the battery current (A), and T is the battery usage time (s)" to determine the current battery charging and discharging state.

3. The method for controlling the automatic cruising range of an electric vehicle according to claim 2, characterized in that: The step S50 comprises the following steps: S51, the flat road speed control unit drives at a normal speed at a preset flat road speed, obtains a maximum speed with a minimum amount of electricity, maximizes the use of electricity to save electricity, and transmits it to the downhill charging unit; S52, the downhill charging unit obtains the preset downhill speed and running inertia through the slope sensor to perform gliding charging, so that the gliding speed is offset by the charging speed to increase the power and extend the endurance, and transmits it to the uphill acceleration unit; S53, the uphill acceleration unit obtains the preset uphill speed through the slope sensor to ensure the maximum efficiency of battery use, reduce the minimum loss of battery power and save power, and transmits it to the low-speed stabilization unit; S54, the low-speed stabilization unit obtains the low-speed driving road through the high-definition camera and reduces the driving speed and safety stability to ensure the driving comfort of the vehicle and achieve the purpose of saving electricity, and transmits it to the power station charging unit; S55, the power station charging unit charges the battery for a predetermined time through a predetermined charging pile to reach a predetermined battery capacity, thereby minimizing the driving time and maximizing the battery life, and transmits the charge to the processing center; S56. The processing center compares the actual storage capacity of the battery with the maximum storage capacity standard of the battery stored in the memory: if it is equal to the standard, the vehicle continues to drive; if it is lower than the standard, the alarm is transmitted to the vehicle and the vehicle maintenance is notified.

4. The method for controlling the automatic cruising range of an electric vehicle according to claim 2, characterized in that: The step S60 comprises the following steps: S61, the load detection unit obtains whether the total weight of the vehicle exceeds the maximum load of the vehicle through the load sensor, and if it is overweight, an alarm is issued to prompt weight reduction, and if it is not overweight, the alarm is transmitted to the load detection unit; S62, the load detection unit obtains whether the vehicle mileage exceeds the standard through the load sensor, and if so, an alarm is issued to prompt the vehicle to stop and rest; if not, the alarm is transmitted to the motor detection unit; S63, the motor detection unit obtains whether the service life or wear degree of the vehicle motor exceeds the standard through the motor life tester, and if so, an alarm is issued to prompt the replacement of the motor, and if not, the alarm is transmitted to the system detection unit; S64, the system detection unit obtains whether the operating status of the vehicle battery management system is normal through the BMS tester, and if it is abnormal, an alarm is issued to prompt the replacement of the battery system, and if it is normal, it is transmitted to the battery detection unit; S65. The battery detection unit obtains whether the service life or battery loss status of the vehicle battery is normal through a battery tester. If it is abnormal, an alarm is issued to prompt the battery to be replaced. If it is normal, the vehicle should be scrapped.

5. The electric vehicle automatic cruising control system according to claim 1 is characterized in that: It also includes a computer device and a computer-readable storage medium; the computer device includes a memory and various functional modules, the memory stores a computer program, and when the various functional modules execute the computer program, the steps of an electric vehicle automatic endurance control method as described in any one of claims 2 to 4 are implemented; the computer-readable storage medium stores a computer program, and when the computer program is executed by the various functional modules, the steps of an electric vehicle automatic endurance control method as described in any one of claims 2 to 4 are implemented.

6. An automatic cruising range control device for an electric vehicle, characterized in that: It is implemented by using an electric vehicle automatic cruising range control system as described in claims 1 and 5 above and an electric vehicle automatic cruising range control method as described in any one of claims 2 to 4 above.

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