Vehicle energy management method, device and system, storage medium and vehicle

Abstract

The invention relates to a vehicle energy management method, device and system, a storage medium and a vehicle. The vehicle energy management method belongs to the technical field of vehicle manufacturing, and comprises the following steps: when energy storage charging and discharging are carried out through a supercapacitor, the capacity state, the capacitor voltage and the capacitor temperature state of the supercapacitor during vehicle operation are used as electricity utilization power judgment conditions of the supercapacitor; determining the most appropriate power utilization power selection of the super capacitor under the current operation condition, and then comparing the incidence relation among the generator power, the driving motor power, the third load power and the current maximum allowable charging and discharging power of the power battery under the current vehicle operation state; and dynamically adjusting the charging and discharging strategies of the super capacitor and the power battery. In this way, energy conversion of the vehicle during operation under the current working condition can be comprehensively considered, and therefore the energy utilization efficiency of the super capacitor during vehicle energy management can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle manufacturing, and in particular, to a vehicle energy management method, a vehicle energy management device, a vehicle energy management system, a storage medium, and a vehicle. Background Art

[0002] To implement the concept of sustainable development, China will firmly develop new energy technologies in the future. In the field of commercial heavy trucks, the new energy transformation is surging. Pure electric heavy trucks have been promoted in logistics fields such as urban distribution and factories and mines. However, limited by current battery technologies, energy replenishment infrastructure and other factors, there is still a long way to go for the pure electric heavy truck solution to achieve efficient transportation of traditional fuel vehicles over long distances. Moreover, due to the constraints of spatial layout and energy form, the selection of power batteries for range-extended heavy trucks has certain limitations. Range-extended vehicles rely on engines to generate electricity, and the electric energy can be output to the axle end to drive the vehicle or output to the power battery to store electric energy. The power battery mainly plays the role of electric energy transfer or storage. Considering the actual operating cost of heavy trucks, small-capacity and high-rate batteries become the first choice, but it is difficult to balance high cycle life. Therefore, there will be energy utilization losses during emergency braking or rapid acceleration of the vehicle. This restricts the driving range of the vehicle to a certain extent. Summary of the Invention

[0003] In view of this, embodiments of the present disclosure are expected to provide a vehicle energy management method, a vehicle energy management device, a vehicle energy management system, a storage medium, and a vehicle.

[0004] The technical solution of the present disclosure is implemented as follows:

[0005] In a first aspect, the present disclosure provides a vehicle energy management method.

[0006] The vehicle energy management method provided by the embodiments of the present disclosure

[0007] is applied to a vehicle energy management system, the vehicle energy management system includes a supercapacitor, the supercapacitor is connected to a generator and a drive motor of the vehicle, and the method includes:

[0008] Obtain the current operating condition of the vehicle, the generator power, the drive motor power, the third load power, and the current maximum allowable charging power of the power battery under the current operating condition of the vehicle;

[0009] Based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption power judgment conditions of the supercapacitor, determine the power consumption power of the supercapacitor under the current operating condition; wherein, the capacity state of the supercapacitor is the current fully charged capacity of the capacitor / the nominal capacity of the capacitor;

[0010] Based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery;

[0011] Based on the charge and discharge strategies of the supercapacitor and the power battery, perform vehicle energy management during vehicle operation.

[0012] In some embodiments, determining the power consumption of the supercapacitor in the current operating condition based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes:

[0013] Determine the current operating condition of the vehicle;

[0014] Based on the current operating condition of the vehicle and the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, determine the power consumption of the supercapacitor in the current operating condition.

[0015] In some embodiments, determining the power consumption of the supercapacitor in the current operating condition based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes:

[0016] If the vehicle is in a braking condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal working state of the supercapacitor, then determine that the power consumption of the supercapacitor in the current operating condition is the first energy recovery power; wherein, the first energy recovery power = generator power of the vehicle + drive motor power - third load power;

[0017] If the vehicle is in a braking condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal working state of the supercapacitor and less than the safety temperature of the supercapacitor working, then determine that the power consumption of the supercapacitor in the current operating condition is the charging power of the characteristic curve of the capacitor with temperature after the supercapacitor exceeds the optimal working temperature range;

[0018] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the characteristic curve of the supercapacitor with respect to its SOH;

[0019] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the characteristic curve of the capacitor with respect to temperature and SOH after the supercapacitor exceeds the optimal operating temperature range; wherein, the first threshold is greater than the second threshold;

[0020] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero;

[0021] If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit of the charging voltage, then determine that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero.

[0022] In some embodiments, the power consumption of the supercapacitor under the current operating condition is determined based on the state of charge, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the judgment conditions for the power consumption of the supercapacitor, including:

[0023] If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the first energy release power; wherein, the first energy release power = driving motor power + third load power - generator power;

[0024] If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the characteristic curve of the capacitor with temperature after the supercapacitor exceeds the optimal operating temperature range;

[0025] If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero;

[0026] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the characteristic curve of the supercapacitor with its SOH;

[0027] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the characteristic curve of the capacitor with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range;

[0028] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero;

[0029] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, and the capacitance voltage of the supercapacitor is less than the lower limit of the discharge voltage, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero.

[0030] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery in the current vehicle operating state, the charge-discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0031] If the vehicle is in a braking condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safety temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor in the current operating condition is the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range;

[0032] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0033] In some embodiments, based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power, the charge-discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0034] If the power consumption of the supercapacitor in the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the supercapacitor in the current operating condition, and the energy recovery power of the power battery is zero;

[0035] If the power consumption of the supercapacitor in the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then set the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range as the energy recovery power of the supercapacitor in the current operating condition, and the energy recovery power of the power battery is the third energy recovery power; wherein, the third energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range;

[0036] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature is the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0037] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state, the generator power, the drive motor power, the third load power, and the maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery includes:

[0038] If the vehicle is in a braking condition, the capacity state of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition, the first energy recovery power, and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the maximum allowable charging power of the power battery at present; wherein, the power consumption of the supercapacitor under the current operating condition is the charging power of the supercapacitor's characteristic curve with respect to its SOH under the current operating condition.

[0039] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition, the first energy recovery power, and the second energy recovery power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

[0040] In some embodiments, based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition, the first energy recovery power, and the second energy recovery power, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery includes:

[0041] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero;

[0042] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then the charging power of the supercapacitor along the characteristic curve of its SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fourth energy recovery power; wherein, the fourth energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the charging power of the supercapacitor along the characteristic curve of its SOH;

[0043] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then the charging power of the supercapacitor along the characteristic curve of its SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0044] In some embodiments, the charging and discharging strategies of the supercapacitor and the power battery are dynamically adjusted based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state, the generator power, the drive motor power, the third load power, and the maximum allowable charge and discharge power of the power battery under the current vehicle operating state, including:

[0045] If the vehicle is in a braking condition and the capacitor temperature of the supercapacitor is greater than the safe temperature for the supercapacitor to operate, then the energy recovery power of the power consumption of the supercapacitor under the current operating condition is set to zero, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0046] In some embodiments, the charging and discharging strategies of the supercapacitor and the power battery are dynamically adjusted based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state, the generator power, the drive motor power, the third load power, and the maximum allowable charge and discharge power of the power battery under the current vehicle operating state, including:

[0047] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitor voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the charging power of the characteristic curve of the capacitor with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range.

[0048] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

[0049] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power includes:

[0050] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero;

[0051] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then set the charging power of the characteristic curve of the capacitor with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fifth energy recovery power; wherein, the fifth energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the characteristic curve of the capacitor with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range.

[0052] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor with respect to the characteristic curves of temperature and SOH is the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0053] In some embodiments, based on the correlation between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes:

[0054] If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit value of the charging voltage, then the energy recovery power of the power consumption of the supercapacitor under the current operating condition is set to zero, and the energy recovery power of the power battery is the minimum of the first energy recovery power and the maximum allowable charging power of the power battery at present.

[0055] In some embodiments, based on the correlation between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes:

[0056] If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the maximum allowable charging power of the power battery at present; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor with respect to the characteristic curve of temperature after the supercapacitor exceeds the optimal operating temperature range.

[0057] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0058] In some embodiments, based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the first energy release power and the second energy release power, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery, including:

[0059] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero;

[0060] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then after the supercapacitor exceeds the optimal operating temperature range, set the discharge power of the capacitor's characteristic curve with respect to temperature as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the third energy release power; wherein, the third energy release power = driving motor power + third load power - vehicle generator power - the discharge power of the capacitor's characteristic curve with respect to temperature after the supercapacitor exceeds the optimal operating temperature range;

[0061] If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then after the supercapacitor exceeds the optimal operating temperature range, set the discharge power of the capacitor's characteristic curve with respect to temperature as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the current maximum allowable discharge power of the power battery.

[0062] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state, the generator power, the driving motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery, including:

[0063] If the vehicle is in the driving condition, the capacity state of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = driving motor power + third load power - vehicle generator power - the current maximum allowable discharge power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the supercapacitor's characteristic curve with respect to its SOH.

[0064] Based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the magnitudes of the first energy release power and the second energy release power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

[0065] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the magnitudes of the first energy release power and the second energy release power includes:

[0066] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero;

[0067] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then set the discharge power of the supercapacitor along its SOH characteristic curve as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the fourth energy release power; wherein, the fourth energy release power = drive motor power + third load power - vehicle generator power - discharge power of the supercapacitor along its SOH characteristic curve;

[0068] If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then set the discharge power of the supercapacitor along its SOH characteristic curve as the energy release power of the supercapacitor under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

[0069] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state includes:

[0070] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature for the operation of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = driving motor power + third load power - vehicle generator power - the current maximum allowable discharge power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range.

[0071] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

[0072] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power includes:

[0073] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero;

[0074] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then set the discharge power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the fifth energy release power; wherein, the fifth energy release power = driving motor power + third load power - vehicle generator power - the discharge power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range.

[0075] If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then set the discharge power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range as the energy release power of the supercapacitor under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

[0076] Second aspect, the present disclosure provides a vehicle energy management device, which is applied to a vehicle energy management system. The vehicle energy management system includes a supercapacitor, and the supercapacitor is connected to a generator and a drive motor of the vehicle. The device includes:

[0077] A data acquisition module, configured to acquire the current operating condition of the vehicle and the generator power, drive motor power, third load power of the vehicle under the current operating condition, and the current maximum allowable charging power of the power battery.

[0078] A power determination module, configured to determine the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor when the vehicle is operating as the power consumption judgment conditions of the supercapacitor; wherein, the capacity state of the supercapacitor is the current full charge capacity of the capacitor / the nominal capacity of the capacitor.

[0079] A strategy adjustment module, configured to dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the relationship between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, drive motor power, third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state.

[0080] An energy management module, configured to perform vehicle energy management during vehicle operation based on the charge and discharge strategies of the supercapacitor and the power battery.

[0081] Third aspect, the present disclosure provides a vehicle energy management system, including:

[0082] A generator, configured to output electric energy;

[0083] A drive motor, configured to output drive power;

[0084] A power battery, configured to input or output vehicle electric energy;

[0085] A supercapacitor, configured to input or output vehicle electric energy;

[0086] A battery management unit, electrically connected to the power battery, configured to manage the energy input and output of the power battery;

[0087] A capacitor management unit, electrically connected to the supercapacitor, configured to manage the energy input and output of the supercapacitor;

[0088] An energy control unit; wherein, the generator controller of the generator, the motor controller of the drive motor, the battery management unit, and the capacitor management unit are all electrically connected to the energy control unit;

[0089] The energy control unit is configured to obtain the current operating condition of the vehicle, as well as the generator power, drive motor power, third load power of the vehicle, and the current maximum allowable charging power of the power battery under the current operating condition;

[0090] Based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, determine the power consumption of the supercapacitor under the current operating condition;

[0091] Based on the relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, drive motor power, third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery; and

[0092] Based on the charge and discharge strategies of the supercapacitor and the power battery, perform vehicle energy management during vehicle operation.

[0093] In a fourth aspect, the present disclosure provides a computer-readable storage medium, on which a vehicle energy management program is stored. When the vehicle energy management program is executed by a processor, the vehicle energy management method described in the first aspect above is implemented.

[0094] In a fifth aspect, the present disclosure provides a vehicle, including the vehicle energy management system described in the third aspect.

[0095] The vehicle energy management method according to the embodiment of the present disclosure is applied to a vehicle energy management system, which includes a supercapacitor, which is connected to a generator and a drive motor of the vehicle, and the method includes: obtaining the current operating condition of the vehicle and the generator power, drive motor power, third load power and current maximum allowable charging power of the power battery of the vehicle under the current operating condition; determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running as power consumption judgment conditions of the supercapacitor; dynamically adjusting the charging and discharging strategies of the supercapacitor and the power battery based on the power consumption of the supercapacitor under the current vehicle operating state and the correlation between the generator power, drive motor power, third load power and current maximum allowable charging and discharging power of the power battery under the current vehicle operating state; and performing vehicle energy management when the vehicle is running based on the charging and discharging strategies of the supercapacitor and the power battery. In this application, when charging and discharging energy storage through supercapacitors, the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running can be used as the power judgment conditions of the supercapacitor to determine the most appropriate power selection of the supercapacitor under the current operating conditions, and then based on the most appropriate power selection of the supercapacitor under the current operating conditions, the correlation between the generator power, drive motor power, third load power and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state is compared to dynamically adjust the charging and discharging strategies of the supercapacitor and the power battery. In this way, the energy conversion of the vehicle during operation under the current operating conditions can be fully considered, which is conducive to improving the energy utilization efficiency of the supercapacitor in vehicle energy management while extending the service life of the power battery and the supercapacitor as much as possible.

[0096] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 is a flow chart of a vehicle energy management method according to an exemplary embodiment;

[0098] Figure 2 A schematic diagram of a vehicle energy management system according to an exemplary embodiment Figure 1 ;

[0099] Figure 3 A schematic diagram of a vehicle energy management system according to an exemplary embodiment Figure 2 ;

[0100] Figure 4 A schematic diagram of a vehicle energy management system according to an exemplary embodimentFigure 3 ;

[0101] Figure 5 is a schematic diagram of the structure of a vehicle energy management system shown according to an exemplary embodiment Figure 4 ;

[0102] Figure 6 is a schematic diagram of the structure of a vehicle energy management system shown according to an exemplary embodiment Figure 5 ;

[0103] Figure 7 is a schematic diagram of the structure of a vehicle energy management system shown according to an exemplary embodiment Figure 6 ;

[0104] Figure 8 is a schematic diagram of the structure of a vehicle energy management system shown according to an exemplary embodiment Figure 7 ;

[0105] Figure 9 is a schematic diagram of the structure of a vehicle energy management device according to an exemplary embodiment. Detailed implementation manners

[0106] The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and should not be construed as a limitation of the present disclosure.

[0107] To implement the concept of sustainable development, China will firmly develop new energy technologies in the future. In the field of commercial heavy trucks, new energy transformation is surging. Pure electric heavy trucks have been promoted in logistics fields such as urban distribution and factories and mines. However, due to current battery technologies, energy replenishment infrastructure and other factors, there is still a long way to go for the pure electric heavy truck solution to achieve efficient transportation of traditional fuel vehicles over long distances. Since range-extended heavy trucks are restricted by space layout and energy forms, there are certain limitations in the selection of their power batteries. Range-extended vehicles rely on engines to generate electricity. The electric energy can be output to the axle end to drive the vehicle, or output to the power battery to store electric energy. The power battery mainly plays the role of electric energy transfer or storage. Considering the actual operating cost of heavy trucks, small-capacity, high-rate batteries are the first choice, but it is difficult to balance high cycle life. Therefore, there will be energy utilization losses during emergency braking or rapid acceleration of the vehicle. This restricts the driving range of the vehicle to a certain extent.

[0108] In view of the above situation, the present disclosure provides a vehicle energy management method, which is applied to a vehicle energy management system. The vehicle energy management system includes a supercapacitor, and the supercapacitor is connected to a generator and a drive motor of the vehicle. Figure 1It is a flowchart of a vehicle energy management method shown according to an exemplary embodiment. As Figure 1 shown, the vehicle energy management method includes:

[0109] Step 10: Obtain the current operating condition of the vehicle, as well as the generator power, drive motor power, third load power, and the current maximum allowable charging power of the power battery of the vehicle under the current operating condition;

[0110] Step 11: Based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption power judgment conditions of the supercapacitor, determine the power consumption power of the supercapacitor under the current operating condition; wherein, the capacity state of the supercapacitor is the current fully charged capacity of the capacitor / the nominal capacity of the capacitor;

[0111] Step 12: Based on the power consumption power of the supercapacitor under the current vehicle operating state and the correlation relationship existing among the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery;

[0112] Step 13: Based on the charge and discharge strategies of the supercapacitor and the power battery, perform vehicle energy management during vehicle operation.

[0113] In this exemplary embodiment, Figure 2 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 1 . As Figure 2 shown, a supercapacitor can be set in the vehicle energy management system. Connect the supercapacitor 15 to the capacitance management system 16 and the converter 10, and connect the power battery 14 to the battery management system 13 and the converter 9; wherein, the engine 1 is connected to the generator 2, the generator 2 is connected to the first inverter 3, and the generator 2 is connected to the generator controller 7; wherein, the drive motor 6 is connected to the motor controller 8 and the second inverter 5; the first inverter 3, the first converter 9, the second converter 10, and the second inverter 5 are all connected to each other; the energy control system 4 is communicatively connected to the generator controller 7, the motor controller 8, the battery management system 13, and the capacitance management system 16.

[0114] Among them, the energy control system 4 respectively establishes communications with the generator controller 7, the motor controller 8, the battery management system 13, and the capacitance management system 16, and performs energy management on the vehicle according to the internal logic;

[0115] Among them, the range extender includes an engine 1 and a generator 2, which are connected to a first inverter 3 and output direct current to the bus; a drive motor 6 is connected to a second inverter 5, providing electrical energy for the motor during driving and recovering electrical energy during braking; a first converter 9 serves as a bidirectional DC / DC module, connecting the bus and the power battery 14. During driving, depending on the required power of the whole vehicle, it can store the electrical energy generated by the range extender or output electrical energy, and during braking, it can store the electrical energy recovered by the motor; a second converter 10 serves as a bidirectional DC / DC module, connecting the bus and the supercapacitor. During driving, it selects whether to output electrical energy according to the change of the required power of the whole vehicle, and during braking, it selects whether to recover electrical energy according to the counter-driving power of the motor; a third converter 11 serves as a unidirectional DC / DC module, supplying power to other loads 12 from the bus.

[0116] Among them, the energy control system 4 communicates with the generator controller 7, the motor controller 8, the battery management system 13, and the capacitor management system 16 to obtain the real-time state parameters of the generator 2, the drive motor 6, the power battery 14, the supercapacitor 15, and other loads 12. Table 1 is the real-time state parameter table. As shown in Table 1, it is judged whether it conforms to the optimal energy management logic under the current state, and the power battery 14 and the supercapacitor 15 are controlled to obtain or store electrical energy.

[0117] Table 1 Real-time State Parameter Table

[0118] system parameter generator power, power variable load rate drive motor rotation speed, torque, current, voltage, power, power variable load rate power battery SOC, temperature, capacity, current, voltage, power super capacitor capacity, temperature, current, voltage, power other loads power

[0119] Among them, based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, the power consumption of the supercapacitor under the current operating conditions is determined. Among them, the power consumption of the supercapacitor under the current operating conditions is the most appropriate power consumption under different conditions based on the standard of extending the life of the supercapacitor, including the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor along the characteristic curve with its SOH, the discharging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range, etc.

[0120] In this application, when charging and discharging energy storage through supercapacitors, the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running can be used as the power judgment conditions of the supercapacitor to determine the most appropriate power selection of the supercapacitor under the current operating conditions, and then based on the most appropriate power selection of the supercapacitor under the current operating conditions, the correlation between the generator power, drive motor power, third load power and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state is compared to dynamically adjust the charging and discharging strategies of the supercapacitor and the power battery. In this way, the energy conversion of the vehicle during operation under the current operating conditions can be fully considered, which is conducive to improving the energy utilization efficiency of the supercapacitor in vehicle energy management while extending the service life of the power battery and the supercapacitor as much as possible.

[0121] In some embodiments, the determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption judgment condition of the supercapacitor includes:

[0122] determining a current operating condition of the vehicle;

[0123] Based on the current operating condition of the vehicle, and the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption judgment conditions of the supercapacitor, the power consumption of the supercapacitor under the current operating condition is determined.

[0124] In this exemplary embodiment, when determining the electric power consumption of the supercapacitor under the current operating conditions in this application, the current operating conditions of the vehicle and the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running can be combined as the judgment conditions for comprehensively judging the electric power consumption of the supercapacitor under the current operating conditions, so that the most appropriate electric power consumption of the supercapacitor under the current operating conditions can be more reasonably judged, which is beneficial to improving the service life of the supercapacitor.

[0125] In some embodiments, the determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption judgment condition of the supercapacitor includes:

[0126] If the vehicle is in a braking condition, and the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the first energy recovery power; wherein, the first energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load;

[0127] If the vehicle is in a braking condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safety temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor's characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range; wherein, the charging power of the capacitor's characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range specifically refers to the most appropriate charging power determined based on protecting the capacitor and extending the service life of the capacitor at the current temperature;

[0128] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor's characteristic curve with its SOH; wherein, the charging power of the capacitor's characteristic curve with its SOH specifically refers to the most appropriate charging power determined based on protecting the capacitor and extending the service life of the capacitor at the current SOH;

[0129] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safety temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor's characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range; wherein, the first threshold is greater than the second threshold; wherein, the charging power of the capacitor's characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range specifically refers to the most appropriate charging power determined based on protecting the capacitor and extending the service life of the capacitor at the current temperature and SOH;

[0130] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the safe temperature for the operation of the supercapacitor, then it is determined that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero;

[0131] If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit of the charging voltage, then it is determined that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero.

[0132] In this exemplary embodiment, Figure 3 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 2 ; Figure 4 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 3 ; Figure 5 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 4 ; Figure 6 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 5 ; Figure 7 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 6 ; Figure 8 is a schematic structural diagram of a vehicle energy management system shown according to an exemplary embodiment Figure 7 . In this application Figures 3 to 8 are all schematic structural diagrams of the vehicle energy management system. The connection lines between the inverter and the converter in each figure are energy flow or circuit lines. Among them, the solid line represents controlled conduction, and the dashed line represents non-controlled conduction. The dashed line between the energy control system and the generator controller, etc. is the signal control line. When the converter connecting the inverter and the power battery is a dashed line, it means that the recovery power or release power of the power battery is zero. When the converter connecting the inverter and the supercapacitor is a dashed line, it means that the recovery power or release power of the power consumption of the supercapacitor under the current operating condition is zero. Figures 3 to 8 Are respectively illustrated in the following embodiments. Among them, Figures 3 to 5 Is illustrated in the supercapacitor energy recovery embodiment, Figures 6 to 8 Is illustrated in the supercapacitor energy release embodiment.

[0133] In this exemplary embodiment, the first threshold in this application is greater than the second threshold, and the first threshold, the second threshold, and the upper limit value of the charging voltage can all be set according to specific circumstances. The third load power is the load power of other components in the vehicle except for the generator and the drive motor. The state of charge of the supercapacitor is the current fully charged capacity of the capacitor divided by the nominal capacity of the capacitor, which can characterize the current health state of the supercapacitor. When the state of charge of the supercapacitor exceeds the first threshold, it indicates that the health state of the supercapacitor is very good. At this time, it can be considered to fully recover the braking energy through the supercapacitor, and its recovery power is the first energy recovery power. At this time, the recovery power of the power battery is zero. In this way, while recovering the vehicle energy, the charge and discharge times of the power battery can be minimized, which is beneficial to extending the service life of the power battery.

[0134] In this exemplary embodiment, if the vehicle is in a braking condition, and the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then it is determined that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal temperature range. Since the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, at this time, because the temperature of the supercapacitor has a relatively large impact on the charging characteristics of the supercapacitor, it can be considered that the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal temperature range is used as the power consumption of the supercapacitor under the current operating condition.

[0135] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then it is determined that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal temperature range; where the first threshold is greater than the second threshold. The state of charge of the supercapacitor being lower than the second threshold indicates that the health state of the supercapacitor is not very good at this time. When determining the power consumption of the supercapacitor under the current operating condition, the SOH health degree of the capacitor needs to be considered. Since the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, therefore, the influence of the capacitor temperature also needs to be considered while considering the SOH health degree. That is, the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal temperature range is used as the power consumption of the supercapacitor under the current operating condition.

[0136] In some embodiments, determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes:

[0137] If the vehicle is in a driving condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the first energy release power; wherein, the first energy release power = driving motor power + third load power - generator power;

[0138] If the vehicle is in a driving condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the upper temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor's characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range; wherein, the discharge power of the capacitor's characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range specifically refers to the most appropriate discharge power determined based on protecting the capacitor and extending the service life of the capacitor at the current temperature;

[0139] If the vehicle is in a driving condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero;

[0140] If the vehicle is in a driving condition, the capacity state of the supercapacitor is lower than a second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor's characteristic curve with its SOH; wherein, the discharge power of the capacitor's characteristic curve with its SOH specifically refers to the most appropriate discharge power determined based on protecting the capacitor and extending the service life of the capacitor at the current SOH;

[0141] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the characteristic curve of the capacitor with temperature and SOH after the supercapacitor exceeds the optimal temperature range; wherein, after the supercapacitor exceeds the optimal temperature range, the discharge power of the characteristic curve of the capacitor with temperature and SOH specifically refers to the most appropriate discharge power determined by the capacitor at the current temperature and SOH to protect the capacitor and extend the service life of the capacitor;

[0142] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero;

[0143] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, and the capacitance voltage of the supercapacitor is less than the lower limit of the discharge voltage, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero.

[0144] In this exemplary embodiment, as in the above embodiment, when determining the power consumption of the supercapacitor under the current operating condition of the vehicle in the driving condition, both the state of charge of the supercapacitor and the supercapacitor temperature should be considered. When the supercapacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, the influence of temperature on the discharge characteristics of the supercapacitor should be considered. When the state of charge of the supercapacitor is lower than the second threshold, the influence of the health state of the supercapacitor on the discharge characteristics of the supercapacitor should be considered. In this way, while realizing the effective utilization of vehicle energy, the service life of the supercapacitor can be extended as much as possible.

[0145] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state, the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery, including:

[0146] If the vehicle is in a braking condition, when the state of charge of the super capacitor exceeds the first threshold, the capacitor voltage of the super capacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the super capacitor and less than the safe temperature of the super capacitor operation, determine the magnitude relationship between the power consumption of the super capacitor under the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the current maximum allowable charging power of the power battery; wherein, the power consumption of the super capacitor under the current operating condition is the charging power of the characteristic curve of the capacitor with temperature after the super capacitor exceeds the optimal operating temperature range.

[0147] Based on the comparison result of the magnitude relationship between the power consumption of the super capacitor under the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge and discharge strategies of the super capacitor and the power battery.

[0148] In this exemplary embodiment, when specifically dynamically adjusting the charge and discharge strategies of the super capacitor and the power battery, the first energy recovery power and the second energy recovery power can be constructed based on the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state; then, based on the comparison result of the magnitude relationship between the power consumption of the super capacitor under the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge and discharge strategies of the super capacitor and the power battery. In this way, the comprehensive utilization of vehicle energy can be comprehensively considered, which is conducive to improving the energy utilization efficiency.

[0149] In some embodiments, the dynamically adjusting the charge and discharge strategies of the super capacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the super capacitor under the current operating condition and the first energy recovery power and the second energy recovery power includes:

[0150] If the power consumption of the super capacitor under the current operating condition is greater than the first energy recovery power, set the first energy recovery power as the energy recovery power of the power consumption of the super capacitor under the current operating condition, and the energy recovery power of the power battery is zero;

[0151] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature is the energy recovery power equal to the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the third energy recovery power; wherein, the third energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the capacitor's characteristic curve with respect to temperature after the supercapacitor exceeds the optimal operating temperature range.

[0152] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature is the energy recovery power equal to the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0153] In this exemplary embodiment, if the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, the first energy recovery power can be set as the energy recovery power equal to the power consumption of the supercapacitor under the current operating condition, and all the remaining energy recovery can be achieved through the supercapacitor, thereby reducing the charge and discharge times of the power battery.

[0154] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, it indicates that the supercapacitor cannot fully recover the remaining energy of the vehicle at this time. Due to the influence of temperature, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature is the energy recovery power equal to the power consumption of the supercapacitor under the current operating condition. Then, the energy other than the supercapacitor recovery power is recovered by the power battery, that is, the energy recovery power of the power battery is set as the third energy recovery power; wherein, the third energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the capacitor's characteristic curve with respect to temperature after the supercapacitor exceeds the optimal operating temperature range. In this way, it is possible to preferentially use the supercapacitor for energy recovery in the case of temperature influence, and then use the power battery for energy recovery, thereby minimizing the charge and discharge times of the power battery and achieving the purpose of extending the service life of the power battery as much as possible.

[0155] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, it indicates that the rechargeable power of the supercapacitor is relatively small. In this case, after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor along the characteristic curve with temperature is set as the energy recovery power equal to the power consumption of the supercapacitor under the current operating condition, so as to maximize the utilization of the supercapacitor under the current conditions. Then, the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present. In this way, as much vehicle energy as possible can be recovered under limited conditions.

[0156] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state, the generator power, the drive motor power, the third load power, and the maximum allowable charge-discharge power of the power battery under the current vehicle operating state, the charge-discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0157] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitor voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition, the first energy recovery power, and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the maximum allowable charging power of the power battery at present; wherein, the power consumption of the supercapacitor under the current operating condition is the charging power of the supercapacitor along the characteristic curve with its SOH under the current operating condition;

[0158] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition, the first energy recovery power, and the second energy recovery power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0159] In this exemplary embodiment, since the capacity state of the supercapacitor is lower than the second threshold, it indicates that the health state of the supercapacitor is poor at this time. The health state of the supercapacitor will affect the charge and discharge characteristics of the supercapacitor. At this time, the health state of the supercapacitor needs to be taken into account. Therefore, the power consumption of the supercapacitor under the current operating condition is used as the charging power of the characteristic curve of the supercapacitor with respect to its SOH to compare the magnitude relationship with the first energy recovery power and the second energy recovery power. Then, based on the comparison result of the magnitude relationship with the first energy recovery power and the second energy recovery power, the charge and discharge strategies of the supercapacitor and the power battery are dynamically adjusted. In this way, the comprehensive utilization of vehicle energy can be comprehensively considered, which is conducive to improving the energy utilization efficiency.

[0160] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power includes:

[0161] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then the first energy recovery power is set as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero;

[0162] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then the charging power of the characteristic curve of the supercapacitor with respect to its SOH is set as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fourth energy recovery power; wherein, the fourth energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the characteristic curve of the supercapacitor with respect to its SOH;

[0163] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then the charging power of the characteristic curve of the supercapacitor with respect to its SOH is set as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the maximum allowable charging power of the power battery at present.

[0164] In this exemplary embodiment, when the state of health of the supercapacitor affects the charging characteristics of the supercapacitor, the charging power of the supercapacitor along its characteristic curve with respect to the state of health (SOH) can be considered as the energy recovery power of the power consumption of the supercapacitor under the current operating conditions. Among them, if the power consumption of the supercapacitor under the current operating conditions is greater than the first energy recovery power, it indicates that under the current state of health, the supercapacitor can completely recover the remaining energy. At this time, the first energy recovery power is set as the energy recovery power of the power consumption of the supercapacitor under the current operating conditions, and the energy recovery power of the power battery is zero. If the power consumption of the supercapacitor under the current operating conditions is greater than the second energy recovery power and less than the first energy recovery power, it means that the supercapacitor cannot completely recover the remaining energy. Considering the state of health of the capacitor, the charging power of the supercapacitor along its characteristic curve with respect to the SOH is set as the energy recovery power of the power consumption of the supercapacitor under the current operating conditions, and then the remaining energy is recovered through the power battery, that is, the energy recovery power of the power battery is set as the fourth energy recovery power; among them, the fourth energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the supercapacitor along its characteristic curve with respect to the SOH. In this way, while performing energy recovery, considering the state of health of the capacitor, the service life of the supercapacitor can be extended as much as possible.

[0165] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the power of the generator, the power of the drive motor, the power of the third load, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, the charge and discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0166] If the vehicle is in a braking condition and the capacitor temperature of the supercapacitor is greater than the safe temperature at which the supercapacitor operates, the energy recovery power of the power consumption of the supercapacitor under the current operating conditions is set to zero, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

[0167] In this exemplary embodiment, when the capacitor temperature of the supercapacitor is greater than the safe temperature at which the supercapacitor operates, it indicates that the supercapacitor is no longer suitable for charge and discharge operations. At this time, the energy recovery power of the power consumption of the supercapacitor under the current operating conditions is set to zero, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery, which is sufficient. In this way, energy recovery can be performed as much as possible.

[0168] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery in the current vehicle operating state, the charge-discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0169] If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor in the current operating condition is the charging power of the capacitor along the characteristic curve of temperature and SOH after the supercapacitor exceeds the optimal operating temperature range.

[0170] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0171] In this exemplary embodiment, when the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, it indicates that the health state of the supercapacitor is relatively poor at this time, and the capacitor temperature also affects the charging characteristics of the capacitor. At this time, it is necessary to comprehensively consider the capacitor temperature and the capacitor health state. The charging power of the capacitor along the characteristic curve of temperature and SOH after the supercapacitor exceeds the optimal operating temperature range can be used as the power consumption of the supercapacitor in the current operating condition. In this way, the service life of the supercapacitor can be extended as much as possible.

[0172] In some embodiments, based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor in the current operating condition and the first energy recovery power and the second energy recovery power, the charge-discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0173] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero;

[0174] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature and SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fifth energy recovery power; wherein, the fifth energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the capacitor's characteristic curve with respect to temperature and SOH after the supercapacitor exceeds the optimal operating temperature range;

[0175] If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature and SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

[0176] In this exemplary embodiment, on the basis of considering the capacitor temperature and health state, if the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero; if the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature and SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fifth energy recovery power; if the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, the charging power of the capacitor's characteristic curve with respect to temperature and SOH is set to the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery. In this way, it is possible to recover vehicle energy as much as possible while extending the service life of the supercapacitor as much as possible.

[0177] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes:

[0178] If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit value of the charging voltage, then set the energy recovery power of the power consumption of the supercapacitor under the current operating condition to zero, and the energy recovery power of the power battery is the minimum of the first energy recovery power and the current maximum allowable charging power of the power battery.

[0179] In this exemplary embodiment, when the capacitance voltage of the supercapacitor is greater than the upper limit value of the charging voltage, it indicates that the supercapacitor is no longer suitable for charging. At this time, set the energy recovery power of the power consumption of the supercapacitor under the current operating condition to zero, and the energy recovery power of the power battery is the minimum of the first energy recovery power and the current maximum allowable charging power of the power battery. In this way, as much energy recovery as possible can be carried out.

[0180] In some embodiments, based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes:

[0181] If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal working state of the supercapacitor and less than the safe temperature of the supercapacitor working, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal working temperature range.

[0182] Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0183] In this exemplary embodiment, when the capacitance state of the supercapacitor exceeds the first threshold, it indicates that the health state of the supercapacitor is good; when the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, it indicates that the supercapacitor can discharge normally; when the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, it indicates that the temperature of the supercapacitor has affected the charge and discharge characteristics of the supercapacitor. Therefore, at this time, considering the discharge power of the capacitor with respect to the characteristic curve of temperature after the supercapacitor exceeds the optimal operating temperature range as the power consumption of the supercapacitor under the current operating conditions, a comparison result based on the magnitude relationship between the power consumption of the supercapacitor under the current operating conditions and the first energy release power and the second energy release power is used to dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery. In this way, it is beneficial to extend the service life of the supercapacitor when the supercapacitor is used for discharging.

[0184] In some embodiments, the dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating conditions and the first energy release power and the second energy release power includes:

[0185] If the power consumption of the supercapacitor under the current operating conditions is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating conditions, and the energy release power of the power battery is zero;

[0186] If the power consumption of the supercapacitor under the current operating conditions is greater than the second energy release power and less than the first energy release power, then set the discharge power of the capacitor with respect to the characteristic curve of temperature after the supercapacitor exceeds the optimal operating temperature range as the energy release power of the supercapacitor under the current operating conditions, and the energy release power of the power battery is the third energy release power; where the third energy release power = driving motor power + third load power - vehicle generator power - discharge power of the capacitor with respect to the characteristic curve of temperature after the supercapacitor exceeds the optimal operating temperature range;

[0187] If the power consumption of the supercapacitor under the current operating conditions is less than the second energy release power, then set the discharge power of the capacitor with respect to the characteristic curve of temperature after the supercapacitor exceeds the optimal operating temperature range as the energy release power of the supercapacitor under the current operating conditions, and the energy release power of the power battery is the maximum allowable discharge power of the power battery at present.

[0188] In this exemplary embodiment, based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the first energy release power and the second energy release power, the energy release power of the power consumption of the supercapacitor and the energy release power of the power battery under the current operating condition are adjusted, which is beneficial to preferentially using the supercapacitor for energy release to supply power to the drive motor and other loads. This is beneficial to reducing the number of energy release times of the power battery, thereby achieving the effect of extending the service life of the power battery.

[0189] In some embodiments, based on the correlation between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes:

[0190] If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitor voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal working state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the current maximum allowable discharge power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the supercapacitor along its SOH characteristic curve.

[0191] Based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the first energy release power and the second energy release power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

[0192] In this exemplary embodiment, if the state of charge of the supercapacitor is lower than the second threshold, it indicates that there is a health state problem with the supercapacitor at this time, and the health state of the capacitor can be considered at this time. Let the discharge power of the supercapacitor along its SOH characteristic curve be used as the power consumption of the supercapacitor under the current operating condition, so as to dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the first energy release power and the second energy release power. In this way, while using the supercapacitor for external energy supply, the service life of the supercapacitor can be extended as much as possible.

[0193] In some embodiments, based on the comparison result of the power consumption of the supercapacitor under the current operating condition with the first energy release power and the second energy release power, the charge and discharge strategies of the supercapacitor and the power battery are dynamically adjusted, including:

[0194] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero;

[0195] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then set the discharge power of the supercapacitor along its SOH characteristic curve as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the fourth energy release power; wherein, the fourth energy release power = drive motor power + third load power - vehicle generator power - discharge power of the supercapacitor along its SOH characteristic curve;

[0196] If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then set the discharge power of the supercapacitor along its SOH characteristic curve as the energy release power of the supercapacitor under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

[0197] In this exemplary embodiment, if the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, it indicates that the available power of the supercapacitor is sufficient at this time. At this time, directly set the first energy release power as the energy release power of the supercapacitor under the current operating condition for the capacitor to discharge externally, and at the same time, the energy release power of the power battery is zero. If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, it means that the available power of the supercapacitor is insufficient. At this time, considering that the health state of the capacitor can withstand, set the discharge power of the supercapacitor along its SOH characteristic curve as the energy release power of the supercapacitor under the current operating condition, so as to discharge externally as much as possible while considering the health state of the supercapacitor. In this way, the service life of the supercapacitor can be extended as much as possible while meeting the vehicle energy demand.

[0198] In some embodiments, the charging and discharging strategies of the supercapacitor and the power battery are dynamically adjusted based on the power consumption of the supercapacitor in the current vehicle operation state, and the correlation between the generator power, the drive motor power, the third load power and the current maximum allowable charging and discharging power of the power battery in the current vehicle operation state, including:

[0199] If the vehicle is in a driving condition, the capacity state of the supercapacitor is lower than the second threshold value, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature at which the supercapacitor operates, then determine the relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = driving motor power + third load power - vehicle generator power - current maximum allowable discharge power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor according to the characteristic curve of temperature and SOH after the supercapacitor exceeds the optimal operating temperature range;

[0200] Based on the comparison result of the power consumption of the supercapacitor under the current operating condition and the magnitude relationship between the first energy release power and the second energy release power, the charging and discharging strategies of the supercapacitor and the power battery are dynamically adjusted.

[0201] In this exemplary embodiment, when the vehicle is in a driving condition, the capacity state of the supercapacitor is lower than the second threshold value, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor, indicating that the health state and temperature influence of the supercapacitor need to be considered at this time. Therefore, after the supercapacitor exceeds the optimal operating temperature range, the discharge power of the characteristic curve of the capacitor with temperature and SOH can be used as the power consumption of the supercapacitor under the current operating condition, and the charging and discharging strategy of the supercapacitor and the power battery can be dynamically adjusted based on the comparison result of the power consumption of the supercapacitor under the current operating condition and the magnitude relationship between the first energy release power and the second energy release power. In this way, the charging and discharging strategy of the supercapacitor and the power battery can be carried out while extending the service life of the supercapacitor as much as possible to meet the energy management needs of the vehicle.

[0202] In some embodiments, dynamically adjusting the charging and discharging strategies of the supercapacitor and the power battery based on the comparison result of the power consumption of the supercapacitor under the current operating condition and the magnitude relationship between the first energy release power and the second energy release power includes:

[0203] If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor's power consumption under the current operating condition, and the energy release power of the power battery is zero;

[0204] If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then after the supercapacitor exceeds the optimal operating temperature range, the discharge power of the capacitor's characteristic curve with temperature and SOH is set as the energy release power of the supercapacitor's power consumption under the current operating condition, and the energy release power of the power battery is the fifth energy release power; where the fifth energy release power = drive motor power + third load power - vehicle generator power - the discharge power of the capacitor's characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range;

[0205] If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then after the supercapacitor exceeds the optimal operating temperature range, the discharge power of the capacitor's characteristic curve with temperature and SOH is set as the energy release power of the supercapacitor's power consumption under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

[0206] In this exemplary embodiment, on the basis of considering the influence of capacitor temperature and health on the charge and discharge characteristics of the capacitor, if the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, it indicates that the release power of the supercapacitor can meet the vehicle's energy demand. At this time, the power consumption of the supercapacitor under the current operating condition can be set as the first energy release power for energy supply, and the energy release power of the power battery is zero. If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, it indicates that the supercapacitor is not sufficient to meet the vehicle's energy demand alone. At this time, the energy release power of the power battery is the fifth energy release power. After the supercapacitor exceeds the optimal operating temperature range, the discharge power of the capacitor along the characteristic curve with temperature and SOH is the energy release power of the power consumption of the supercapacitor under the current operating condition. In this way, the service life of the supercapacitor can be delayed as much as possible while meeting the vehicle's energy demand. If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, it indicates that the power consumption of the supercapacitor under the current operating condition is seriously insufficient. At this time, while making the discharge power of the capacitor along the characteristic curve with temperature and SOH be the energy release power of the power consumption of the supercapacitor under the current operating condition after the supercapacitor exceeds the optimal operating temperature range, the energy release power of the power battery is set as the current maximum allowable discharge power of the power battery to meet the vehicle's energy demand as much as possible.

[0207] In this exemplary embodiment, if the capacitor voltage is less than the lower limit of the discharge voltage, it indicates that the supercapacitor does not participate in power output. Then, the energy release power of the power consumption of the supercapacitor under the current operating condition is set to zero, and the energy release power of the power battery is set as the current maximum allowable discharge power of the power battery to meet the vehicle's energy demand as much as possible. Among them, when the first energy release power is less than the current maximum allowable discharge power of the power battery, the first energy release power can be set as the energy release power of the power battery.

[0208] The supercapacitor mentioned in this application is used as an auxiliary energy storage element of the power battery pack. On the premise of matching a small-capacity and low-cost supercapacitor, the vehicle energy is managed through an energy control system to achieve the purpose of maximizing the energy utilization efficiency and the service life of the power battery pack, clearly demonstrating the benefits brought by applying this solution to new energy heavy trucks with an extended-range architecture.

[0209] The energy control system finds the optimal solution that meets the current working condition according to the generator state, drive motor state, various states of the power battery, and various states of the supercapacitor, not only ensuring a relatively high service life of the power battery and the supercapacitor, but also improving the braking energy recovery efficiency under this premise.

[0210] The present disclosure provides a vehicle energy management device, which is applied to a vehicle energy management system. The vehicle energy management system includes a supercapacitor, and the supercapacitor is connected to a generator and a drive motor of a vehicle. Figure 9 FIG. 1 is a schematic diagram showing the structure of a vehicle energy management device according to an exemplary embodiment. Figure 9 As shown, the device comprises:

[0211] A data acquisition module 90 is used to acquire the current operating condition of the vehicle and the generator power, drive motor power, third load power and current maximum allowable charging power of the power battery of the vehicle under the current operating condition;

[0212] The power determination module 91 is used to determine the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitor voltage and capacitor temperature state of the supercapacitor when the vehicle is running as the power consumption judgment condition of the supercapacitor; wherein the capacity state of the supercapacitor is the current full charge capacity of the capacitor / the nominal capacity of the capacitor;

[0213] A strategy adjustment module 92, configured to dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the power consumption of the supercapacitor in the current vehicle operation state, and the correlation between the generator power, the drive motor power, the third load power and the current maximum allowable charge and discharge power of the power battery in the current vehicle operation state;

[0214] The energy management module 93 is used to perform vehicle energy management when the vehicle is running based on the charging and discharging strategies of the supercapacitor and the power battery.

[0215] In this exemplary embodiment, when charging and discharging energy storage through supercapacitors, the capacity state, capacitor voltage and capacitor temperature state of the supercapacitors when the vehicle is running can be used as the power judgment conditions of the supercapacitors to determine the most appropriate power selection of the supercapacitors under the current operating conditions, and then based on the most appropriate power selection of the supercapacitors under the current operating conditions, the correlation between the generator power, the drive motor power, the third load power and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state is compared to dynamically adjust the charging and discharging strategies of the supercapacitors and the power battery. In this way, the energy conversion of the vehicle when it is running under the current operating conditions can be fully considered, which is conducive to improving the energy utilization efficiency of the supercapacitors in the vehicle energy management, while extending the service life of the power battery and the supercapacitors as much as possible.

[0216] It can be understood that the vehicle energy management device of the present application can refer to the vehicle energy management method above.

[0217] The present disclosure provides a vehicle energy management system, including:

[0218] A generator for outputting electric energy;

[0219] A drive motor for outputting drive power;

[0220] A power battery for inputting or outputting vehicle electric energy;

[0221] A super capacitor for inputting or outputting vehicle electric energy;

[0222] A battery management unit electrically connected to the power battery for managing the energy input and output of the power battery;

[0223] A capacitor management unit electrically connected to the super capacitor for managing the energy input and output of the super capacitor;

[0224] An energy control unit; wherein, a generator controller of the generator, a motor controller of the drive motor, the battery management unit and the capacitor management unit are all electrically connected to the energy control unit;

[0225] The energy control unit is configured to obtain the current operating condition of the vehicle and the generator power, drive motor power, third load power of the vehicle and the current maximum allowable charging power of the power battery under the current operating condition;

[0226] Based on the capacity state, capacitor voltage and capacitor temperature state of the super capacitor during vehicle operation as the power consumption judgment conditions of the super capacitor, determine the power consumption of the super capacitor under the current operating condition;

[0227] Based on the power consumption of the super capacitor under the current vehicle operating state and the correlation relationship existing between the generator power, the drive motor power, the third load power and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjust the charge and discharge strategies of the super capacitor and the power battery; and

[0228] Based on the charge and discharge strategies of the super capacitor and the power battery, perform vehicle energy management during vehicle operation.

[0229] In this exemplary embodiment,

[0230] It can be understood that the battery management unit is the battery management system shown in Figure 2 ; the capacitor management unit is the capacitor management system shown in Figure 2 ; the energy control unit is the energy control system. The vehicle energy management system of the present application can refer to the vehicle energy management method above.

[0231] The present disclosure provides a computer-readable storage medium, on which a vehicle energy management program is stored. When the vehicle energy management program is executed by a processor, the vehicle energy management method described in each of the above embodiments is implemented.

[0232] The present disclosure provides a vehicle, including the vehicle energy management system described in each of the above embodiments.

[0233] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which a program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0234] It should be understood that the various parts of the present disclosure can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0235] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0236] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present disclosure.

[0237] In addition, the terms "first", "second", etc. used in the embodiments of the present disclosure are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated in this embodiment. Thus, the features defined with terms such as "first", "second", etc. in the embodiments of the present disclosure can explicitly or implicitly indicate that at least one such feature is included in this embodiment. In the description of the present disclosure, the meaning of the word "plurality" is at least two or more, such as two, three, four, etc., unless otherwise specifically defined in the embodiment.

[0238] In the present disclosure, unless otherwise clearly specified or limited by relevant regulations in the embodiment, the terms "mounted", "connected", "connected", and "fixed", etc. appearing in the embodiment should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements, or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific implementation situations.

[0239] In this disclosure, unless otherwise clearly defined and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact via an intermediate medium. Further, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher level of height than the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower level of height than the second feature.

[0240] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A vehicle energy management method, characterized in that, Applied to a vehicle energy management system, the vehicle energy management system includes a supercapacitor, and the supercapacitor is connected to a generator and a drive motor of the vehicle. The method includes: Obtain the current operating condition of the vehicle, the generator power, the drive motor power, the third load power, and the current maximum allowable charging power of the power battery under the current operating condition of the vehicle; Based on the capacity state, the capacitance voltage, and the capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, determine the power consumption of the supercapacitor under the current operating condition; wherein, the capacity state of the supercapacitor is the current fully charged capacity of the capacitor / the nominal capacity of the capacitor; Based on the correlation relationship between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery; Based on the charge and discharge strategies of the supercapacitor and the power battery, perform vehicle energy management during vehicle operation.

2. The vehicle energy management method according to claim 1, characterized in that The determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, the capacitance voltage, and the capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes: Determine the current operating condition of the vehicle; Based on the current operating condition of the vehicle and the capacity state, the capacitance voltage, and the capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, determine the power consumption of the supercapacitor under the current operating condition.

3. The vehicle energy management method according to claim 2, wherein The determining the power consumption of the supercapacitor under the current operating condition based on the capacity state, the capacitance voltage, and the capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes: If the vehicle is in a braking condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the best working state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is a first energy recovery power; wherein, the first energy recovery power = the generator power of the vehicle + the drive motor power - the third load power; If the vehicle is in a braking condition, the capacity state of the supercapacitor exceeds a first threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the best working state of the supercapacitor and less than the safety temperature of the supercapacitor working, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor according to the characteristic curve with temperature after the supercapacitor exceeds the best working temperature range; If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the supercapacitor along its characteristic curve with SOH; If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation at the same time, then determine that the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range; wherein, the first threshold is greater than the second threshold; If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero; If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit value of the charging voltage, then determine that the energy recovery power of the power consumption of the supercapacitor under the current operating condition is zero.

4. The vehicle energy management method according to claim 2, characterized in that, Determining the power consumption of the supercapacitor under the current operating condition based on the state of charge, capacitance voltage and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor includes: If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the first energy release power; wherein, the first energy release power = driving motor power + third load power - generator power; If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation at the same time, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range; If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero; If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the supercapacitor along its characteristic curve with SOH; If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation at the same time, then determine that the power consumption of the supercapacitor under the current operating condition is the discharge power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range; If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature of the supercapacitor operation, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero; If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, and the capacitance voltage of the supercapacitor is less than the lower limit of the discharge voltage, then determine that the energy release power of the power consumption of the supercapacitor under the current operating condition is zero.

5. The vehicle energy management method according to claim 3, wherein Based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery, including: If the vehicle is in a braking condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is less than the upper limit of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation at the same time, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range; Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

6. The vehicle energy management method according to claim 5, characterized in that, Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the power consumption of the supercapacitor under the current operating condition and the magnitudes of the first energy recovery power and the second energy recovery power, including: If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero; If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, set the charging power of the capacitor's characteristic curve with respect to temperature as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the third energy recovery power; where the third energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the capacitor's characteristic curve with respect to temperature after the supercapacitor exceeds the optimal operating temperature range; If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then after the supercapacitor exceeds the optimal operating temperature range, set the charging power of the capacitor's characteristic curve with respect to temperature as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

7. The vehicle energy management method according to claim 3, wherein Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the power of the generator, the power of the drive motor, the power of the third load, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, including: If the vehicle is in a braking condition, the capacity state of the supercapacitor is lower than the second threshold, the capacitor voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is less than the upper limit temperature of the optimal operating state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power; where the second energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the current maximum allowable charging power of the power battery; where the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor's characteristic curve with respect to its SOH under the current operating condition; Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power.

8. The vehicle energy management method according to claim 7, characterized in that Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the power consumption of the supercapacitor under the current operating condition and the magnitudes of the first energy recovery power and the second energy recovery power, including: If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero; If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then set the charging power of the supercapacitor along its SOH characteristic curve as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fourth energy recovery power; wherein, the fourth energy recovery power = the generator power of the vehicle + the drive motor power - the third load power - the charging power of the supercapacitor along its SOH characteristic curve; If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then set the charging power of the supercapacitor along its SOH characteristic curve as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

9. The vehicle energy management method according to claim 5 or 7, characterized in that Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, including: If the vehicle is in a braking condition and the capacitor temperature of the supercapacitor is greater than the safe temperature for the supercapacitor to operate, then set the energy recovery power of the power consumption of the supercapacitor under the current operating condition to zero, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

10. The vehicle energy management method according to claim 3, wherein Dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, including: If the vehicle is in a braking condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is less than the upper limit value of the charging voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power; wherein, the second energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the current maximum allowable charging power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range. Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

11. The vehicle energy management method according to claim 10, characterized in that, The dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy recovery power and the second energy recovery power includes: If the power consumption of the supercapacitor under the current operating condition is greater than the first energy recovery power, then set the first energy recovery power as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is zero. If the power consumption of the supercapacitor under the current operating condition is greater than the second energy recovery power and less than the first energy recovery power, then set the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the fifth energy recovery power; wherein, the fifth energy recovery power = the power of the vehicle's generator + the power of the drive motor - the power of the third load - the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range. If the power consumption of the supercapacitor under the current operating condition is less than the second energy recovery power, then set the charging power of the capacitor along the characteristic curve with temperature and SOH after the supercapacitor exceeds the optimal operating temperature range as the energy recovery power of the power consumption of the supercapacitor under the current operating condition, and the energy recovery power of the power battery is the current maximum allowable charging power of the power battery.

12. The vehicle energy management method according to claim 5 or 7, characterized in that The dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state includes: If the vehicle is in a braking condition and the capacitance voltage of the supercapacitor is greater than the upper limit value of the charging voltage, then the energy recovery power of the power consumption power of the supercapacitor under the current operating condition is set to zero, and the energy recovery power of the power battery is the minimum of the first energy recovery power and the current maximum allowable charging power of the power battery.

13. The vehicle energy management method according to claim 3, characterized in that, Based on the correlation relationship between the power consumption power of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery, including: If the vehicle is in a driving condition, the state of charge of the supercapacitor exceeds the first threshold, the capacitance voltage of the supercapacitor is greater than the lower limit value of the discharge voltage, and the capacitor temperature is greater than the upper limit temperature of the optimal operating state of the supercapacitor and less than the safe temperature of the supercapacitor operation, then determine the magnitude relationship between the power consumption power of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the current maximum allowable charging power of the power battery; wherein, the power consumption power of the supercapacitor under the current operating condition is the discharge power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range. Based on the comparison result of the magnitude relationship between the power consumption power of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

14. The vehicle energy management method according to claim 13, wherein Based on the comparison result of the magnitude relationship between the power consumption power of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery, including: If the power consumption power of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the power consumption power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero; If the power consumption power of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then set the discharge power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range as the energy release power of the power consumption power of the supercapacitor under the current operating condition, and the energy release power of the power battery is the third energy release power; wherein, the third energy release power = drive motor power + third load power - vehicle generator power - the discharge power of the capacitor along the characteristic curve with temperature after the supercapacitor exceeds the optimal operating temperature range. If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, after the supercapacitor exceeds the optimal operating temperature range, the discharge power of the capacitor along the characteristic curve with respect to temperature is the energy release power of the power consumption of the supercapacitor under the current operating condition, and the energy release power of the power battery is the maximum allowable discharge power of the power battery at present.

15. The vehicle energy management method according to claim 4, characterized in that, Based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power and the maximum allowable charge and discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery includes: If the vehicle is in the driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is less than the upper temperature of the optimal operating state of the supercapacitor, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the maximum allowable discharge power of the power battery at present; wherein, the power consumption of the supercapacitor under the current operating condition is the discharge power of the supercapacitor along the characteristic curve with respect to its SOH. Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery.

16. The vehicle energy management method according to claim 15, wherein, Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjusting the charge and discharge strategies of the supercapacitor and the power battery includes: If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the power consumption of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero; If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then set the discharge power of the supercapacitor along the characteristic curve with respect to its SOH as the energy release power of the power consumption of the supercapacitor under the current operating condition, and the energy release power of the power battery is the fourth energy release power; wherein, the fourth energy release power = drive motor power + third load power - vehicle generator power - the discharge power of the supercapacitor along the characteristic curve with respect to its SOH. If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, then the energy release power of the supercapacitor with its characteristic curve of SOH during discharge is set to the power consumption of the supercapacitor under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

17. The vehicle energy management method according to claim 4, wherein Based on the correlation relationship between the power consumption of the supercapacitor under the current vehicle operating state and the generator power, the drive motor power, the third load power, and the current maximum allowable charge-discharge power of the power battery under the current vehicle operating state, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes: If the vehicle is in a driving condition, the state of charge of the supercapacitor is lower than the second threshold, the capacitance voltage of the supercapacitor is greater than the lower limit of the discharge voltage, and the capacitor temperature is greater than the safe temperature at which the supercapacitor operates, then determine the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power; wherein, the second energy release power = drive motor power + third load power - vehicle generator power - the current maximum allowable discharge power of the power battery; wherein, the power consumption of the supercapacitor under the current operating condition is the energy release power of the capacitor with its characteristic curve of temperature and SOH after the supercapacitor exceeds the optimal operating temperature range. Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjust the charge-discharge strategies of the supercapacitor and the power battery.

18. The vehicle energy management method according to claim 17, characterized in that, Based on the comparison result of the magnitude relationship between the power consumption of the supercapacitor under the current operating condition and the first energy release power and the second energy release power, dynamically adjusting the charge-discharge strategies of the supercapacitor and the power battery includes: If the power consumption of the supercapacitor under the current operating condition is greater than the first energy release power, then set the first energy release power as the energy release power of the supercapacitor under the current operating condition, and the energy release power of the power battery is zero. If the power consumption of the supercapacitor under the current operating condition is greater than the second energy release power and less than the first energy release power, then after the supercapacitor exceeds the optimal operating temperature range, the energy release power of the capacitor with its characteristic curve of temperature and SOH is set to the power consumption of the supercapacitor under the current operating condition, and the energy release power of the power battery is the fifth energy release power; wherein, the fifth energy release power = drive motor power + third load power - vehicle generator power - the energy release power of the capacitor with its characteristic curve of temperature and SOH after the supercapacitor exceeds the optimal operating temperature range. If the power consumption of the supercapacitor under the current operating condition is less than the second energy release power, after the supercapacitor exceeds the optimal operating temperature range, the discharge power of the capacitor along the characteristic curve of temperature and SOH is the energy release power of the power consumption of the supercapacitor under the current operating condition, and the current maximum allowable discharge power of the power battery is the energy release power of the power battery.

19. A vehicle energy management device, characterized in that, Applied to a vehicle energy management system, the vehicle energy management system includes a supercapacitor, and the supercapacitor is connected to a generator and a drive motor of the vehicle. The device includes: A data acquisition module, configured to acquire the current operating condition of the vehicle and the generator power, drive motor power, third load power, and the current maximum allowable charging power of the power battery under the current operating condition of the vehicle. A power determination module, configured to determine the power consumption of the supercapacitor under the current operating condition based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor; wherein, the capacity state of the supercapacitor is the current fully charged capacity of the capacitor / the nominal capacity of the capacitor. A strategy adjustment module, configured to dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery based on the correlation between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, drive motor power, third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state. An energy management module, configured to perform vehicle energy management during vehicle operation based on the charge and discharge strategies of the supercapacitor and the power battery.

20. A vehicle energy management system, characterized in that, Including: A generator, configured to output electric energy. A drive motor, configured to output drive power. A power battery, configured to input or output vehicle electric energy. A supercapacitor, configured to input or output vehicle electric energy. A battery management unit, electrically connected to the power battery, and configured to manage the energy input and output of the power battery. A capacitor management unit, electrically connected to the supercapacitor, and configured to manage the energy input and output of the supercapacitor. An energy control unit; wherein, the generator controller of the generator, the motor controller of the drive motor, the battery management unit, and the capacitor management unit are all electrically connected to the energy control unit. The energy control unit is configured to acquire the current operating condition of the vehicle and the generator power, drive motor power, third load power, and the current maximum allowable charging power of the power battery under the current operating condition of the vehicle. Based on the capacity state, capacitance voltage, and capacitor temperature state of the supercapacitor during vehicle operation as the power consumption judgment conditions of the supercapacitor, determine the power consumption of the supercapacitor under the current operating condition. Based on the correlation between the power consumption of the supercapacitor in the current vehicle operating state and the generator power, drive motor power, third load power, and the current maximum allowable charge and discharge power of the power battery in the current vehicle operating state, dynamically adjust the charge and discharge strategies of the supercapacitor and the power battery; and Based on the charge and discharge strategies of the supercapacitor and the power battery, vehicle energy management during vehicle operation is performed.

21. A computer-readable storage medium, characterized in that, It stores a vehicle energy management program, and when the vehicle energy management program is executed by a processor, it implements the vehicle energy management method described in any one of claims 1-18.

22. A vehicle, characterized in that, It includes the vehicle energy management system described in claim 20.

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