A method, device, vehicle and storage medium for controlling power of an extended-range vehicle

Abstract

The embodiment of the present invention provides a range-extended vehicle power control method, device, vehicle and storage medium, which are applied to the range-extended vehicle, wherein the range-extended vehicle is provided with a range extender, a power battery and a storage battery, including obtaining temperature information in response to a power battery power protection instruction; determining a high-voltage charge state according to the temperature information; controlling the power generated by the range extender to the power battery based on the high-voltage charge state; receiving a charging request for the storage battery based on the power battery reaching the high-voltage charge state, wherein the charging request includes a charging voltage and a power demand voltage; determining a target voltage according to the charging voltage and the power demand voltage; and controlling the power battery to supply power to the storage battery based on the target voltage. The embodiment of the present invention can actively recharge the power battery and the storage battery of the vehicle according to user needs or when a scene in which recharging is required is detected to ensure the normal operation of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of extended-range vehicles, and in particular to a method for controlling the power of an extended-range vehicle, a power device for an extended-range vehicle, a vehicle and a storage medium. Background Art

[0002] With the development and popularization of new energy vehicles, more and more types of new energy vehicles are being developed and put into daily life. Power batteries and storage batteries are the energy sources of high-voltage and low-voltage electrical appliances of vehicles respectively. However, in current extended-range vehicles, the power protection of storage batteries adopts a charging method similar to that of fuel vehicles, and the power protection of power batteries adopts a method similar to that of pure electric vehicles. The two power protection methods are weakly correlated. This leads to complex charging control methods for the two batteries in extended-range vehicles. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a range-extended vehicle power control method, a range-extended vehicle power device, a vehicle and a storage medium that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, in a first aspect of the present invention, an embodiment of the present invention discloses a method for controlling the power of an extended-range vehicle, which is applied to an extended-range vehicle, wherein the extended-range vehicle is provided with a range extender, a power battery and a storage battery, and the method comprises:

[0005] Responding to a power battery power protection instruction, obtaining temperature information;

[0006] Determining a high voltage charge state based on the temperature information;

[0007] Based on the high voltage state of charge, controlling the power generated by the range extender to the power battery;

[0008] Based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage;

[0009] Determining a target voltage according to the charging voltage and the power demand voltage;

[0010] The power battery is controlled to supply power to the storage battery based on the target voltage.

[0011] Optionally, the temperature information includes the historical temperature of the battery cell and the predicted weather temperature; and the step of determining the high voltage state of charge based on the temperature information includes:

[0012] Determine a minimum temperature value between the battery cell historical temperature and the predicted weather temperature;

[0013] Based on the minimum temperature value, a table lookup is performed in a preset temperature state of charge table to determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

[0014] Optionally, the step of controlling the power generated by the range extender to the power battery based on the high voltage state of charge includes:

[0015] Obtaining the current state of charge of the power battery;

[0016] determining a state of charge difference between the high voltage state of charge and the current state of charge;

[0017] Determining the target power generation value based on the state of charge difference;

[0018] The range extender is controlled to send power generation corresponding to the target power generation value to the power battery.

[0019] Optionally, the step of determining the target voltage according to the charging voltage and the power demand voltage includes:

[0020] Obtaining the current voltage of the battery;

[0021] Determining a charging upper limit voltage according to the current voltage;

[0022] The target voltage is determined according to the charging voltage, the power demand voltage and the charging upper limit voltage.

[0023] Optionally, the step of determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage includes:

[0024] When the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage, determining the power demand voltage as the target voltage;

[0025] When the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage, determining the charging voltage to be the target voltage;

[0026] When the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage, the power demand voltage is determined to be the target voltage.

[0027] Optionally, the method further comprises:

[0028] In response to the remote power replenishment instruction, determining the vehicle stationary time and static current target value;

[0029] Determining the amount of replenishment according to the static current target value and the vehicle stationary time;

[0030] The range extender is controlled to charge the power battery according to the replenishment amount.

[0031] Optionally, the method further comprises:

[0032] Get the upper limit of power replenishment;

[0033] When the amount of supplementary electricity is not greater than the upper limit of supplementary electricity, executing the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity;

[0034] When the replenishment amount is greater than the replenishment upper limit, the replenishment amount is updated by using the replenishment upper limit, and the step of controlling the range extender to charge the power battery according to the replenishment amount is performed with the updated replenishment amount.

[0035] In a second aspect of the invention, an embodiment of the present invention discloses a range-extended vehicle power control device, which is applied to a range-extended vehicle, wherein the range-extended vehicle is provided with a range extender, a power battery and a storage battery, and the device comprises:

[0036] A first acquisition module, configured to acquire temperature information in response to a power battery power protection instruction;

[0037] A charge state determination module, used for determining the high voltage charge state according to the temperature information;

[0038] A first control module, configured to control the power generated by the range extender to the power battery based on the high voltage state of charge;

[0039] A receiving module, which receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, wherein the charging request includes a charging voltage and a power demand voltage;

[0040] A target voltage determination module, used to determine a target voltage according to the charging voltage and the power demand voltage;

[0041] A second control module is used to control the power battery to supply power to the storage battery based on the target voltage.

[0042] In the third aspect of the present invention, an embodiment of the present invention discloses a vehicle, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the extended-range vehicle power control method as described above.

[0043] In a fourth aspect of the present invention, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the extended-range vehicle power control method as described above is implemented.

[0044] The embodiments of the present invention include the following advantages:

[0045] The embodiment of the present invention obtains temperature information in response to the power battery power protection instruction; determines the high-voltage charge state according to the temperature information; controls the power generation power sent by the range extender to the power battery based on the high-voltage charge state; receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, the charging request includes a charging voltage and a power demand voltage; determines a target voltage according to the charging voltage and the power demand voltage; and controls the power battery to supply power to the storage battery based on the target voltage. By actively using the range extender of the range extender vehicle to replenish the power battery based on temperature information according to user needs or when a scene where replenishment is required is detected, and when the power battery is sufficient, replenishing the storage battery based on the charging request for the storage battery, the normal operation of the vehicle is ensured; and the replenishment methods of the two batteries can be linked together, simplifying the steps of using two different control methods for the two batteries respectively, and the power battery and the storage battery can be replenished quickly and accurately, and the advantages of the range extender vehicle in replenishing the power battery and the storage battery are brought into play. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a flowchart of the steps of an embodiment of a method for controlling the power of an extended-range vehicle according to the present invention;

[0047] Figure 2 is a flowchart of another embodiment of a method for controlling the amount of electricity in an extended-range vehicle according to the present invention;

[0048] Figure 3 It is a user-side control schematic diagram of an example of a range-extended vehicle power control method of the present invention;

[0049] Figure 4 It is a vehicle-side control schematic diagram of an example of a range-extended vehicle power control method of the present invention;

[0050] Figure 5 It is a structural block diagram of an embodiment of a range-extended vehicle power control device of the present invention;

[0051] Figure 6 is a structural block diagram of a vehicle provided by an embodiment of the present invention;

[0052] Figure 7 It is a structural block diagram of a storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] Reference Figure 1 , shows a flow chart of steps of an embodiment of a range-extended vehicle power control method of the present invention, the range-extended vehicle power control method is applied to a range-extended vehicle, the range-extended vehicle is provided with a range extender, a power battery and a storage battery. The range extender can generate electricity and send the electricity to the power battery, thereby extending the vehicle's cruising range. The power battery provides electricity to drive the motor to make the vehicle run. The storage battery supplies the vehicle's auxiliary electronic equipment, such as low-voltage electrical systems such as lighting and audio systems, and starts the vehicle.

[0055] The range-extended vehicle power control method may specifically include the following steps:

[0056] Step 101, in response to a power battery power protection instruction, obtaining temperature information;

[0057] In the extended-range vehicle, multiple control modes for the power battery can be set. Through different control modes, the power of the power battery can be reasonably utilized and protected. Among them, a power battery power protection mode can be set, and the power of the power battery can be protected by starting the power battery power protection mode. The user can turn on the power battery power protection mode while the vehicle is driving, or after the vehicle is parked.

[0058] After the power battery power protection mode is turned on, when it is detected that the state of the vehicle requires the power of the power battery to be protected, a power battery power protection instruction can be generated. In response to the power battery power protection instruction, temperature information is obtained.

[0059] Step 102, determining a high voltage charge state according to the temperature information;

[0060] Based on the temperature information, the temperature of the vehicle's environment and the temperature of the vehicle's power battery are judged to determine the corresponding high-voltage charge state.

[0061] Step 103, based on the high voltage state of charge, controlling the power generated by the range extender to the power battery;

[0062] Based on the high-voltage state of charge as the charging target, the power generated by the range extender to the power battery is controlled to adjust the state of charge of the power battery.

[0063] Step 104, based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage;

[0064] When the extended-range power battery is charged and reaches a high-voltage charge state, it means that the power of the power battery can meet the power protection requirements. A charging request for the battery can be received to charge the battery. The charging request includes a charging voltage and a power demand voltage.

[0065] Step 105, determining a target voltage according to the charging voltage and the power demand voltage;

[0066] The target voltage can be determined based on the charging voltage and the power demand voltage. The target voltage is used to represent the voltage value of the battery to achieve power conservation.

[0067] Step 106: Control the power battery to supply power to the storage battery based on the target voltage.

[0068] After determining the target voltage, the power battery can connect the circuit with the storage battery based on the target voltage to supply power to the storage battery and realize charging of the storage battery. For example, a DC step-down switch can be set between the power battery and the storage battery. When charging is required, the DC step-down switch can be turned on to connect the power battery and the storage battery.

[0069] The embodiment of the present invention obtains temperature information in response to the power battery power protection instruction; determines the high-voltage charge state according to the temperature information; controls the power generation power sent by the range extender to the power battery based on the high-voltage charge state; receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, the charging request includes a charging voltage and a power demand voltage; determines a target voltage according to the charging voltage and the power demand voltage; and controls the power battery to supply power to the storage battery based on the target voltage. By actively using the range extender of the range extender vehicle to replenish the power battery based on temperature information according to user needs or when a scene where replenishment is required is detected, and when the power battery is sufficient, replenishing the storage battery based on the charging request for the storage battery, the normal operation of the vehicle is ensured; and the replenishment methods of the two batteries can be linked together, simplifying the steps of using two different control methods for the two batteries respectively, and the power battery and the storage battery can be replenished quickly and accurately, and the advantages of the range extender vehicle in replenishing the power battery and the storage battery are brought into play.

[0070] Reference Figure 2, shows a step flow chart of another embodiment of an extended-range vehicle power control method of the present invention, the extended-range vehicle power control method is applied to an extended-range vehicle, and the extended-range vehicle is provided with a range extender, a power battery and a storage battery.

[0071] Step 201, in response to a power battery power protection instruction, obtaining temperature information;

[0072] In the implementation of the present invention, in order to protect the power of the power battery, the vehicle may periodically check the status of the vehicle to determine whether power battery power protection is required.

[0073] When it is detected that the state of the vehicle requires the power of the power battery to be protected, a power battery power protection instruction may be generated. In response to the power battery power protection instruction, temperature information is acquired.

[0074] Step 202, determining a high voltage charge state according to the temperature information;

[0075] Based on the temperature information and the temperature influence, the high-voltage state of charge that meets the power battery power protection requirements can be determined.

[0076] Specifically, the temperature information includes the historical temperature of the battery cell and the predicted weather temperature; the step of determining the high-voltage state of charge based on the temperature information includes: determining the minimum temperature value between the historical temperature of the battery cell and the predicted weather temperature; based on the minimum temperature value, looking up a preset temperature state of charge table to determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

[0077] In an embodiment of the present invention, the historical temperature of the battery cell may be the battery cell temperature of the battery cell at startup in the previous several days. The predicted weather temperature may be the lowest temperature in the weather forecast for the next several days. The minimum temperature value of the historical temperature of the battery cell and the predicted weather temperature may be determined. The temperature factor affecting the normal use and driving of the whole vehicle is characterized by the minimum temperature value. That is, it may be determined that the vehicle is being used at a temperature corresponding to the minimum temperature value. Based on the minimum temperature value, a table lookup may be performed in a preset temperature state of charge table by table lookup to determine that the state of charge corresponding to the minimum temperature value is a high-voltage state of charge.

[0078] The preset temperature state of charge table can be measured in advance according to the vehicle model to be used, using a laboratory or driving record. The preset temperature state of charge table is a mapping relationship table between temperature and state of charge table. The embodiment of the present invention does not limit the specific values ​​of the preset temperature state of charge table.

[0079] Step 203, based on the high voltage state of charge, controlling the power generated by the range extender to the power battery;

[0080] The high voltage state of charge is used as the charging target to control the power generation power of the range extender to charge the power battery.

[0081] Specifically, the step of controlling the power generation output by the range extender to the power battery based on the high-voltage state of charge includes: obtaining the current state of charge of the power battery; determining the state of charge difference between the high-voltage state of charge and the current state of charge; determining the target power generation value based on the state of charge difference; and controlling the range extender to output the power generation corresponding to the target power generation value to the power battery.

[0082] When controlling the power generation power of the range extender to charge the power battery, the current state of charge of the power battery can be obtained first. The difference between the high-voltage state of charge and the current state of charge is determined. Since the lower the temperature, the higher the high-voltage state of charge, that is, the lower the temperature, the lower the state of charge difference, and the lower the temperature, the more electricity needs to be charged.

[0083] According to the size of the state of charge difference, the power generation corresponding to the state of charge difference in the multi-stage range extender power generation is determined as the target power generation value. Then, the power generation corresponding to the target power generation value is used as the charging power emitted by the range extender to the power battery for charging.

[0084] In addition, you can set multiple alarm levels and SOC (state of charge) thresholds; when the value is lower than the threshold, the corresponding alarm signal will be issued. When the range extender is used to recharge, the alarm signal will be maintained. When the power battery rises to a certain value, it will exit to a lower alarm level or stop the alarm. Set the receipt interval to avoid the alarm signal jumping due to unstable SOC value at different alarm critical points.

[0085] Furthermore, in order to prevent the high voltage of the power battery from replenishing the low voltage battery storage battery, resulting in a continuous decrease in the power battery power, which brings the risk of the power battery being out of power and unable to drive. The power battery can be stopped from supplying power to the storage battery. Specifically, when the current state of charge is lower than a preset state of charge threshold, the power battery is controlled to stop supplying power to the storage battery. The preset state of charge threshold can be determined according to the type of the power battery, and the embodiment of the present invention is not limited to this.

[0086] Step 204, based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage;

[0087] After the power battery reaches the high-voltage charging state, a charging request for the storage battery can be received to charge the storage battery. The charging request includes a charging voltage and a power demand voltage.

[0088] Step 205, determining a target voltage according to the charging voltage and the power demand voltage;

[0089] The target voltage can be determined according to the charging voltage and the power demand voltage to control the battery charging.

[0090] Specifically, the step of determining the target voltage based on the charging voltage and the power demand voltage includes: obtaining the current voltage of the battery; determining the charging upper limit voltage based on the current voltage; and determining the target voltage based on the charging voltage, the power demand voltage and the charging upper limit voltage.

[0091] In practical applications, the current voltage of the battery can be obtained to determine the current battery status. The upper limit voltage of charging is determined based on the difference between the current voltage and the rated voltage of the battery. The target voltage is determined based on the relationship between the charging voltage, the power demand voltage and the upper limit voltage of charging.

[0092] Furthermore, the step of determining the target voltage based on the charging voltage, the power demand voltage and the charging upper limit voltage includes: when the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage, determining the power demand voltage as the target voltage; when the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage, determining the charging voltage as the target voltage; when the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage, determining the power demand voltage as the target voltage.

[0093] For example, the charging voltage in the charging request is LBMS_ReqChrgU, the power demand voltage is LVEM_SysMinVolt, the charging upper limit voltage is LVEM_BatMaxVolt, and the target voltage is LVEM_DCDCDesVolt.

[0094] When LBMS_ReqChrgU (charging voltage) ≤ LVEM_SysMinVolt (power demand voltage) ≤ LVEM_BatMaxVolt (charging upper limit voltage), LVEM_DCDCDesVolt (target voltage) = LVEM_SysMinVolt (power demand voltage);

[0095] When LVEM_SysMinVolt (power demand voltage) ≤ LBMS_ReqChrgU (charging voltage) ≤ LVEM_BatMaxVolt (charging upper limit voltage), then LVEM_DCDCDesVolt (target voltage) = LBMS_ReqChrgU (charging voltage);

[0096] When LBMS_ReqChrgU (charging voltage) ≤ LVEM_BatMaxVolt (charging upper limit voltage) ≤ LVEM_SysMinVolt (power demand voltage), then LVEM_DCDCDesVolt (target voltage) = LVEM_SysMinVolt (power demand voltage).

[0097] Step 206, controlling the power battery to supply power to the storage battery based on the target voltage;

[0098] After the target voltage is obtained, the high voltage of the power battery can be stepped down to a low voltage corresponding to the storage battery based on the target voltage, and the storage battery can be powered to charge the storage battery to the target voltage.

[0099] In addition, in order to protect the battery, you can actively start to recharge the battery when the battery's state of charge is lower than 50%. If the recharging fails, the battery low power consumption mode can be used, and the vehicle reduces the frequency of using the battery. At the same time, the user can be notified through various notification methods, and the relevant non-essential low-voltage systems can be put into deep sleep. When the battery's state of charge is lower than 50% and the power battery still cannot be charged, the entire vehicle can be put into sleep mode, and the user can be reminded and the corresponding method of waking up the entire vehicle can be used. After the vehicle is powered off, the tailgate micro switch can be used to wake up the battery management system to power the entire vehicle.

[0100] Step 207, in response to the remote power replenishment instruction, determining the vehicle stationary time and the static current target value;

[0101] When the user needs to perform remote charging, a remote charging instruction can be issued to the extended-range vehicle through an APP (application). The remote charging instruction is used to instruct the vehicle to start the range extender to charge the power battery when no one is in the vehicle. The vehicle's stationary time and static current target value can be determined in response to the remote charging instruction. The vehicle's stationary time refers to the time the vehicle has been parked, which can be expressed in days. The static current target value is determined based on the type of battery.

[0102] Step 208, determining the amount of replenishment power according to the static current target value and the vehicle stationary time;

[0103] The electric energy required when the vehicle is parked can be determined based on the static current target value and the vehicle stationary time, and the corresponding replenishment amount can be determined as the replenishment amount.

[0104] Specifically, the amount of power replenishment can be calculated using the following formula:

[0105] E1=U*I*(24*T) / 1000*(AB)*N

[0106] Among them, E1 is the replenishment power, U is the target voltage, A is the percentage of the actual capacity of the battery to the rated capacity (the empirical value is 95%), B is the percentage of the minimum actual power of the vehicle starting battery to the rated power, T is the storage and transportation time, D is the self-damage rate of the battery in one day (such as 0.02% for lithium batteries), and N is the efficiency of the power battery to replenish the battery.

[0107] Step 209: Control the range extender to charge the power battery according to the replenishment amount.

[0108] After obtaining the replenishment amount, the power that the range extender needs to generate can be determined based on the replenishment amount, and then the range extender can be controlled to output the corresponding power to charge the power battery.

[0109] In addition, since the range extender is remotely started for recharging, and the operation of the range extender generates heat and emits exhaust gas, when you are uncertain whether the vehicle's surrounding conditions, environment, and exhaust gas are safe and reliable, you can set a daily charging limit to prevent dangerous behavior caused by remotely starting the range extender for recharging.

[0110] Specifically, it may be to obtain an upper limit amount of supplementary electricity; when the amount of supplementary electricity is not greater than the upper limit amount of supplementary electricity, execute the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity; when the amount of supplementary electricity is greater than the upper limit amount of supplementary electricity, update the amount of supplementary electricity using the upper limit amount of supplementary electricity, and execute the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity with the updated amount of supplementary electricity.

[0111] In practical applications, the supplementary power and the upper limit of supplementary power can be compared, and the smaller energy value can be selected as the basis for charging, that is, when the supplementary power is not greater than the upper limit of supplementary power, the supplementary power is used for charging. When the upper limit of supplementary power is less than the supplementary power, the upper limit of supplementary power is used for charging.

[0112] Furthermore, the upper limit of the supplementary power can be determined based on the single start-up duration of the range extender and the upper limit of the power:

[0113] E2 = P*T / 60;

[0114] E2 is the upper limit of the supplementary power, T is the duration of a single start, and P is the upper limit of power.

[0115] The embodiment of the present invention obtains temperature information in response to the power battery power protection instruction; determines the high-voltage charge state according to the temperature information; controls the power generation power sent by the range extender to the power battery based on the high-voltage charge state; receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, the charging request includes a charging voltage and a power demand voltage; determines a target voltage according to the charging voltage and the power demand voltage; and controls the power battery to supply power to the storage battery based on the target voltage. By actively using the range extender of the range extender vehicle to replenish the power battery based on temperature information according to user needs or when a scene where replenishment is required is detected, and when the power battery is sufficient, replenishing the storage battery based on the charging request for the storage battery, the normal operation of the vehicle is ensured; and the replenishment methods of the two batteries can be linked together, simplifying the steps of using two different control methods for the two batteries respectively, and the power battery and the storage battery can be replenished quickly and accurately, and the advantages of the range extender vehicle in replenishing the power battery and the storage battery are brought into play. In addition, based on the remote charging request sent by the user and the stationary time and temperature, the appropriate amount of charging is provided.

[0116] In order to make the implementation process of the present invention clear to those skilled in the art, an example of an applied vehicle system is used for illustration below:

[0117] You can refer to Figure 3 , establish the connection between the mobile terminal and the vehicle end at the remote end, and upload and send signals; refer to Figure 4 On the vehicle side, establish the user side and TSP (Internet of Vehicles), TBOX (vehicle networking terminal), power battery, storage battery, DCDC (step-down converter), vehicle controller (VDC), GCU (range extender generator controller), CDU (display unit), LBMS (low-voltage battery management system), control signals and power charging of the range extender system.

[0118] Among them, the mobile phone APP can start the soft switch for extended range. After clicking the soft switch, the range extender is remotely started to replenish power. After the user confirms it for the second time, the remote extended range start command is issued. If the extended range start is successful, the soft switch will display extended range start. Click the soft switch again to issue a remote extended range shutdown command, and provide relevant prompts based on the feedback from TBOX.

[0119] TSP can receive the remote range-extended start / stop command from APP and forward it to TBOX; or receive the remote range-extended operation status from TBOX and forward it to APP.

[0120] TBOX can receive the remote range-extended start command, execute remote control condition judgment, wake up VIU (vehicle interface), and request to set the user mode to Remote (remote control model); after the high voltage power-on is successful, it sends the remote range-extended start command to VDC; reports the range-extended operation status and related prompt information to the vehicle cloud; when TBOX counts for 20 minutes or receives the range-extended shutdown command or the range-extended operation status is non-running, TBOX ends the remote range-extended start function.

[0121] The VDC receives the remote control extended-range start request, sets the status to Ready, requests the extended-range start and feedbacks the extended-range operation status.

[0122] VIU3 is responsible for waking up the EP / EVR (extended range power control) segment with NM (network management) messages and waking up the EMS (enhanced range management system) with hardwire; setting the user mode to Remote.

[0123] GCU can receive remote start extended range charging signals and control charging power, torque and speed.

[0124] CDU can receive low voltage power replenishment signals.

[0125] LBMS can monitor the health status of the battery and issue a low-voltage recharging request.

[0126] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0127] Reference Figure 5 , shows a structural block diagram of an embodiment of a range-extended vehicle power control device of the present invention, the range-extended vehicle power control device is applied to a range-extended vehicle, the range-extended vehicle is provided with a range extender, a power battery and a storage battery, the range-extended vehicle power control device may specifically include the following modules:

[0128] A first acquisition module 501 is used to acquire temperature information in response to a power battery power protection instruction;

[0129] A charge state determination module 502, configured to determine a high voltage charge state based on the temperature information;

[0130] A first control module 503, configured to control the power generated by the range extender to the power battery based on the high voltage state of charge;

[0131] A receiving module 504, which receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, wherein the charging request includes a charging voltage and a power demand voltage;

[0132] A target voltage determination module 505, configured to determine a target voltage according to the charging voltage and the power demand voltage;

[0133] The second control module 506 is configured to control the power battery to supply power to the storage battery based on the target voltage.

[0134] In an optional embodiment of the present invention, the temperature information includes the historical temperature of the battery cell and the predicted weather temperature; the state of charge determination module 502 includes:

[0135] A minimum temperature value determination submodule, used to determine the minimum temperature value between the battery cell historical temperature and the predicted weather temperature;

[0136] The state of charge determination submodule is used to look up a preset temperature state of charge table based on the minimum temperature value, and determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

[0137] In an optional embodiment of the present invention, the first control module 503 includes:

[0138] A first acquisition submodule, used to acquire the current state of charge of the power battery;

[0139] a state of charge difference determination submodule, configured to determine a state of charge difference between the high voltage state of charge and the current state of charge;

[0140] A target power generation value submodule, configured to determine the target power generation value based on the state of charge difference;

[0141] The first control submodule is used to control the range extender to send the power generation power corresponding to the target power generation power value to the power battery.

[0142] In an optional embodiment of the present invention, the device further comprises:

[0143] The stop module is used to control the power battery to stop supplying power to the storage battery when the current state of charge is lower than a preset state of charge threshold.

[0144] In an optional embodiment of the present invention, the target voltage determination module 505 includes:

[0145] A second acquisition submodule, used for acquiring the current voltage of the battery;

[0146] A charging upper limit voltage determination submodule, used to determine the charging upper limit voltage according to the current voltage;

[0147] The target voltage determination submodule is used to determine the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage.

[0148] In an optional embodiment of the present invention, the target voltage determination submodule includes:

[0149] a first target voltage determination unit, configured to determine the power demand voltage as the target voltage when the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage;

[0150] a second target voltage determination unit, configured to determine that the charging voltage is the target voltage when the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage;

[0151] The third target voltage determination unit is configured to determine the power demand voltage as the target voltage when the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage.

[0152] In an optional embodiment of the present invention, the device further comprises:

[0153] A stationary determination module, used to determine the stationary duration of the vehicle and the static current target value in response to the remote power replenishment instruction;

[0154] A replenishment amount determination module, used to determine the replenishment amount according to the static current target value and the vehicle stationary time;

[0155] The remote charging module is used to control the range extender to charge the power battery according to the charging amount.

[0156] In an optional embodiment of the present invention, the device further comprises:

[0157] The third acquisition module is used to obtain the upper limit of the supplementary power;

[0158] A first execution step, for executing the step of controlling the range extender to charge the power battery according to the supplementary power amount when the supplementary power amount is not greater than the supplementary power upper limit amount;

[0159] The second execution step is used for updating the charging amount by using the upper limit of the charging amount when the charging amount is greater than the upper limit of the charging amount, and executing the step of controlling the range extender to charge the power battery according to the charging amount by using the updated charging amount.

[0160] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0161] Reference Figure 6 , an embodiment of the present invention further provides a vehicle, comprising:

[0162] A processor 601 and a storage medium 602, wherein the storage medium 602 stores a computer program executable by the processor 601. When the vehicle is running, the processor 601 executes the computer program to implement the extended-range vehicle power control method as described in any one of the embodiments of the present invention.

[0163] The extended-range vehicle power control method is applied to an extended-range vehicle, wherein the extended-range vehicle is provided with a range extender, a power battery and a storage battery, and the method comprises:

[0164] Responding to a power battery power protection instruction, obtaining temperature information;

[0165] Determining a high voltage charge state based on the temperature information;

[0166] Based on the high voltage state of charge, controlling the power generated by the range extender to the power battery;

[0167] Based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage;

[0168] Determining a target voltage according to the charging voltage and the power demand voltage;

[0169] The power battery is controlled to supply power to the storage battery based on the target voltage.

[0170] Optionally, the temperature information includes the historical temperature of the battery cell and the predicted weather temperature; and the step of determining the high voltage state of charge based on the temperature information includes:

[0171] Determine a minimum temperature value between the battery cell historical temperature and the predicted weather temperature;

[0172] Based on the minimum temperature value, a table lookup is performed in a preset temperature state of charge table to determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

[0173] Optionally, the step of controlling the power generated by the range extender to the power battery based on the high voltage state of charge includes:

[0174] Obtaining the current state of charge of the power battery;

[0175] determining a state of charge difference between the high voltage state of charge and the current state of charge;

[0176] Determining the target power generation value based on the state of charge difference;

[0177] The range extender is controlled to send power generation corresponding to the target power generation value to the power battery.

[0178] Optionally, the method further comprises:

[0179] When the current state of charge is lower than a preset state of charge threshold, the power battery is controlled to stop supplying power to the storage battery.

[0180] Optionally, the step of determining the target voltage according to the charging voltage and the power demand voltage includes:

[0181] Obtaining the current voltage of the battery;

[0182] Determining a charging upper limit voltage according to the current voltage;

[0183] The target voltage is determined according to the charging voltage, the power demand voltage and the charging upper limit voltage.

[0184] Optionally, the step of determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage includes:

[0185] When the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage, determining the power demand voltage as the target voltage;

[0186] When the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage, determining the charging voltage to be the target voltage;

[0187] When the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage, the power demand voltage is determined to be the target voltage.

[0188] Optionally, the method further comprises:

[0189] In response to the remote power replenishment instruction, determining the vehicle stationary time and static current target value;

[0190] Determining the amount of replenishment according to the static current target value and the vehicle stationary time;

[0191] The range extender is controlled to charge the power battery according to the replenishment amount.

[0192] Optionally, the method further comprises:

[0193] Get the upper limit of power replenishment;

[0194] When the amount of supplementary electricity is not greater than the upper limit of supplementary electricity, executing the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity;

[0195] When the replenishment amount is greater than the replenishment upper limit, the replenishment amount is updated by using the replenishment upper limit, and the step of controlling the range extender to charge the power battery according to the replenishment amount is performed with the updated replenishment amount.

[0196] The memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the processor.

[0197] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0198] Reference Figure 7 The embodiment of the present invention further provides a computer-readable storage medium 701, on which a computer program is stored. When the computer program is executed by a processor, the extended-range vehicle power control method as described in any one of the embodiments of the present invention is executed.

[0199] The extended-range vehicle power control method is applied to an extended-range vehicle, wherein the extended-range vehicle is provided with a range extender, a power battery and a storage battery, and the method comprises:

[0200] Responding to a power battery power protection instruction, obtaining temperature information;

[0201] Determining a high voltage charge state based on the temperature information;

[0202] Based on the high voltage state of charge, controlling the power generated by the range extender to the power battery;

[0203] Based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage;

[0204] Determining a target voltage according to the charging voltage and the power demand voltage;

[0205] The power battery is controlled to supply power to the storage battery based on the target voltage.

[0206] Optionally, the temperature information includes the historical temperature of the battery cell and the predicted weather temperature; and the step of determining the high voltage state of charge based on the temperature information includes:

[0207] Determine a minimum temperature value between the battery cell historical temperature and the predicted weather temperature;

[0208] Based on the minimum temperature value, a table lookup is performed in a preset temperature state of charge table to determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

[0209] Optionally, the step of controlling the power generated by the range extender to the power battery based on the high voltage state of charge includes:

[0210] Obtaining the current state of charge of the power battery;

[0211] determining a state of charge difference between the high voltage state of charge and the current state of charge;

[0212] Determining the target power generation value based on the state of charge difference;

[0213] The range extender is controlled to send power generation corresponding to the target power generation value to the power battery.

[0214] Optionally, the method further comprises:

[0215] When the current state of charge is lower than a preset state of charge threshold, the power battery is controlled to stop supplying power to the storage battery.

[0216] Optionally, the step of determining the target voltage according to the charging voltage and the power demand voltage includes:

[0217] Obtaining the current voltage of the battery;

[0218] Determining a charging upper limit voltage according to the current voltage;

[0219] The target voltage is determined according to the charging voltage, the power demand voltage and the charging upper limit voltage.

[0220] Optionally, the step of determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage includes:

[0221] When the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage, determining the power demand voltage as the target voltage;

[0222] When the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage, determining the charging voltage to be the target voltage;

[0223] When the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage, the power demand voltage is determined to be the target voltage.

[0224] Optionally, the method further comprises:

[0225] In response to the remote power replenishment instruction, determining the vehicle stationary time and static current target value;

[0226] Determining the amount of replenishment according to the static current target value and the vehicle stationary time;

[0227] The range extender is controlled to charge the power battery according to the replenishment amount.

[0228] Optionally, the method further comprises:

[0229] Get the upper limit of power replenishment;

[0230] When the amount of supplementary electricity is not greater than the upper limit of supplementary electricity, executing the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity;

[0231] When the replenishment amount is greater than the replenishment upper limit, the replenishment amount is updated by using the replenishment upper limit, and the step of controlling the range extender to charge the power battery according to the replenishment amount is performed with the updated replenishment amount.

[0232] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0233] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0234] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0235] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0236] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0237] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0238] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0239] The above is a detailed introduction to a range-extended vehicle power control method, a range-extended vehicle power device, a vehicle and a storage medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for a general technician in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for controlling the power of an extended-range vehicle, characterized in that: Applied to an extended-range vehicle, the extended-range vehicle is provided with a range extender, a power battery and a storage battery, the method comprising: Responding to a power battery power protection instruction, obtaining temperature information; Determining a high voltage charge state based on the temperature information; Based on the high voltage state of charge, controlling the power generated by the range extender to the power battery; Based on the power battery reaching the high-voltage state of charge, receiving a charging request for the storage battery, the charging request including a charging voltage and a power demand voltage; The power demand voltage is the power voltage required by the battery for the low-voltage load equipment of the vehicle to be used normally and for the vehicle to be started normally; Determining a target voltage according to the charging voltage and the power demand voltage; The step of determining the target voltage according to the charging voltage and the power demand voltage comprises: Obtaining the current voltage of the battery; Determining a charging upper limit voltage according to the current voltage; Determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage; The step of determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage comprises: When the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage, determining the power demand voltage as the target voltage; When the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage, determining the charging voltage to be the target voltage; The power battery is controlled to supply power to the storage battery based on the target voltage.

2. The method according to claim 1, characterized in that The temperature information includes the historical temperature of the battery cell and the predicted weather temperature; the step of determining the high voltage state of charge based on the temperature information includes: Determine a minimum temperature value between the battery cell historical temperature and the predicted weather temperature; Based on the minimum temperature value, a table lookup is performed in a preset temperature state of charge table to determine that the state of charge corresponding to the minimum temperature value is the high-voltage state of charge.

3. The method according to claim 1, characterized in that: The step of controlling the power generated by the range extender to the power battery based on the high voltage state of charge includes: Obtaining the current state of charge of the power battery; determining a state of charge difference between the high voltage state of charge and the current state of charge; Determining a target power generation value based on the state of charge difference; The range extender is controlled to send power generation corresponding to the target power generation value to the power battery.

4. The method according to claim 1, characterized in that The step of determining the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage further includes: When the charging upper limit voltage is not less than the charging voltage and not greater than the power demand voltage, the power demand voltage is determined to be the target voltage.

5. The method according to claim 1, characterized in that The method further comprises: In response to the remote power replenishment instruction, determining the vehicle stationary time and static current target value; Determining the amount of replenishment according to the static current target value and the vehicle stationary time; The range extender is controlled to charge the power battery according to the replenishment amount.

6. The method according to claim 5, characterized in that The method further comprises: Get the upper limit of power replenishment; When the amount of supplementary electricity is not greater than the upper limit of supplementary electricity, executing the step of controlling the range extender to charge the power battery according to the amount of supplementary electricity; When the replenishment amount is greater than the replenishment upper limit, the replenishment amount is updated by using the replenishment upper limit, and the step of controlling the range extender to charge the power battery according to the replenishment amount is performed with the updated replenishment amount.

7. An extended-range vehicle power control device, characterized in that: Applied to a range-extended vehicle, the range-extended vehicle is provided with a range extender, a power battery and a storage battery, the device comprises: A first acquisition module, configured to acquire temperature information in response to a power battery power protection instruction; A charge state determination module, used for determining the high voltage charge state according to the temperature information; A first control module, configured to control the power generated by the range extender to the power battery based on the high voltage state of charge; A receiving module, which receives a charging request for the storage battery based on the power battery reaching the high-voltage charge state, wherein the charging request includes a charging voltage and a power demand voltage; The power demand voltage is the power voltage required by the battery for the low-voltage load equipment of the vehicle to be used normally and for the vehicle to be started normally; A target voltage determination module, used to determine a target voltage according to the charging voltage and the power demand voltage; The target voltage determination module comprises: A second acquisition submodule, used for acquiring the current voltage of the battery; A charging upper limit voltage determination submodule, used to determine the charging upper limit voltage according to the current voltage; A target voltage determination submodule, used to determine the target voltage according to the charging voltage, the power demand voltage and the charging upper limit voltage; The target voltage determination submodule includes: a first target voltage determination unit, configured to determine the power demand voltage as the target voltage when the power demand voltage is not less than the charging voltage and not greater than the charging upper limit voltage; a second target voltage determination unit, configured to determine that the charging voltage is the target voltage when the charging voltage is not less than the power demand voltage and not greater than the charging upper limit voltage; A second control module is used to control the power battery to supply power to the storage battery based on the target voltage.

8. A vehicle, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the extended-range vehicle power control method as claimed in any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the extended-range vehicle power control method as described in any one of claims 1 to 6 are implemented.

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