Charge and Discharge Control Method, System, Device and Electronic Equipment for Power Battery

Abstract

The present invention discloses a charge and discharge control method, system, device and electronic device for a power battery. The method includes: in response to the battery management subsystem entering the power battery charging mode, obtaining the current power state of the power battery module; when the current power state meets the preset power condition, receiving the electric energy transmitted by the energy supply subsystem through an inverter module in the power battery charging link, and converting the electric energy into a charging current for the power battery module through the inverter module, where the charging current is used to charge the power battery module; monitoring the battery state of the power battery through a charge and discharge management module in the power battery charging link; and when the battery state is in a charge cut-off state, closing the power battery charging link through the charge and discharge management module. Thus, an electric two-wheeler integrating power supply and mobile power supply is adopted to meet the charging needs of people's electrical equipment, realizing dual use of one device and improving the quality of people's outdoor life.

Description

Technical Field

[0001] The present invention relates to the technical field of electric two-wheel vehicles, and particularly to a method, system, device and electronic equipment for controlling the charging and discharging of a power battery. Background Art

[0002] With the rapid development of the global economy and the continuous improvement of people's living standards, there are more and more portable electronic products. We are in a "mobile" era, with mobile office, mobile communication, mobile leisure and entertainment, and people's electricity demand also increases accordingly. In the daily life process, a power battery pack with a large storage capacity is configured on an electric two-wheel vehicle. However, the electric two-wheel vehicle cannot provide electric energy to external devices, and cannot meet the electricity demand of other electronic devices of users, which limits the application of the electric two-wheel vehicle. Summary of the Invention

[0003] The present invention provides a method, system, device and electronic equipment for controlling the charging and discharging of a power battery, aiming to solve the technical problem that an electric two-wheel vehicle cannot provide electric energy to external devices in related scenarios.

[0004] To achieve the above object, the present invention is realized through the following technical solutions:

[0005] In the first aspect of the embodiments of the present invention, a charging and discharging control system for a power battery is provided, including: an energy supply subsystem, a battery management subsystem, an electric two-wheel vehicle drive subsystem, and a power output subsystem;

[0006] The energy supply subsystem is connected to the battery management subsystem and is used to output electric energy to the battery management subsystem. Among them, the energy supply subsystem at least includes an on-vehicle 12V DC power supply, an electric vehicle charging power supply, a household charging power supply, and a solar power supply;

[0007] The battery management subsystem is connected to the power output subsystem and is used to provide first electric energy to the power output subsystem. Among them, the power output subsystem is used to charge a terminal device according to the first electric energy;

[0008] The battery management subsystem is connected to the electric two-wheel vehicle drive subsystem and is used to provide second electric energy to the electric two-wheel vehicle drive subsystem. Among them, the electric two-wheel vehicle drive subsystem is used to convert the second electric energy into mechanical energy of the electric two-wheel vehicle.

[0009] Optionally, the battery management subsystem includes: a power battery module, a charge and discharge management module, an inverter module, a charging input interface, a high-voltage DC output interface, an AC output interface, and a low-voltage DC output interface;

[0010] The inverter module is connected to the power battery module, the charging input interface, the high-voltage DC output interface, the AC output interface, and the low-voltage DC output interface;

[0011] The charge and discharge control module is connected to the inverter module and the power battery module;

[0012] The charging input interface is connected to the energy supply subsystem, and the high-voltage DC output interface is connected to the electric two-wheeled vehicle drive subsystem;

[0013] The low-voltage DC output interface and the AC output interface are connected to the electric energy output subsystem.

[0014] Optionally, the low-voltage DC output interface at least includes a Type-C interface, a USB interface, and a DC-12V / 10A interface; the AC output interface is a household 220V AC output interface.

[0015] Optionally, the electric two-wheeled vehicle drive subsystem includes: a control module, an electric two-wheeled drive motor module, and a wheel drive device;

[0016] The control module is connected to the battery management subsystem and the electric two-wheeled drive motor module, and is configured to send the second electric energy to the electric two-wheeled drive motor module;

[0017] The electric two-wheeled drive motor module is connected to the wheel drive device, and is configured to convert the second electric energy into mechanical energy, and drive the electric two-wheeled vehicle to travel according to the mechanical energy through the vehicle drive device.

[0018] In a second aspect of the embodiments of the present invention, there is provided a method for controlling the charge and discharge of a power battery, which is applied to the system according to any one of the first aspects of the present disclosure. The method includes:

[0019] In response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states. Among them, the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeled vehicle drive link, and an electric energy conversion and output link. The target working modes include: a power battery charging mode, an electric two-wheeled vehicle drive mode, and an electric energy conversion and output mode;

[0020] Determine a target interface connected to the battery management subsystem from multiple charging and discharging interfaces according to the target operating mode, detect the power-on state of the target interface, obtain a connection confirmation signal transmitted on the target interface when it is determined that the target interface is powered on, determine the resistance value of the target access circuit connected to the target interface according to the connection confirmation signal, if the resistance value is within the range of the first resistance value interval, determine that the interface type of the target interface is a charging input interface, if the resistance value is within the range of the second resistance value interval, determine that the interface type of the target interface is an AC output interface, if the resistance value is within the range of the third resistance value interval, determine that the interface type of the target interface is a low-voltage DC output interface, and if the resistance value is a preset resistance value, determine that the interface type of the target interface is a high-voltage DC output interface;

[0021] Determine the status signal received by the battery management subsystem according to the interface type, generate a wake-up signal corresponding to the interface type when the status signal matches the target operating mode corresponding to the interface type, and control the battery management subsystem to enter the corresponding target working module in response to the wake-up signal.

[0022] Optionally, the power battery charging mode includes:

[0023] In response to the battery management subsystem entering the power battery charging mode, obtain the current power state of the power battery module;

[0024] When the current power state meets the preset power condition, receive the electric energy transmitted by the energy supply subsystem through the inverter module in the power battery charging link, and convert the electric energy into a charging current for the power battery module through the inverter module, and the charging current is used to charge the power battery module;

[0025] Monitor the battery state of the power battery through the charge and discharge management module in the power battery charging link, and turn off the power battery charging link through the charge and discharge management module when the battery state is a charging cut-off state.

[0026] Optionally, the electric two-wheeled vehicle driving mode includes:

[0027] In response to the battery management subsystem entering the electric two-wheeled vehicle driving mode, determine the current battery state of the power battery module through the charge and discharge management module of the battery management subsystem

[0028] When the current battery state meets the preset discharge condition, the electric energy of the power battery module is transmitted to the drive subsystem of the electric two-wheeled vehicle through the high-voltage DC output interface, and the electric energy is used to drive the drive motor in the drive subsystem of the electric two-wheeled vehicle to rotate, so that the electric two-wheeled vehicle runs.

[0029] Optionally, the electric energy conversion and output mode includes:

[0030] In response to the battery management subsystem entering the electric energy conversion and output mode, the power battery module is self-checked through the charge and discharge management module in the battery management subsystem;

[0031] When it is determined that the power battery module is normal, the power battery module is controlled to enter the standby state through the charge and discharge management module;

[0032] In response to the insertion of a terminal device into the corresponding interface, determine the device type of the terminal device;

[0033] When it is determined that the device type is a low-voltage DC power-consuming device, the inverter module in the battery management subsystem is controlled through the charge and discharge management module to convert the DC high-voltage electric energy output by the power battery module into DC low-voltage electric energy, and the terminal device is charged according to the DC low-voltage electric energy;

[0034] When it is determined that the device type is a household AC power-consuming device, the inverter module in the battery management subsystem is controlled through the charge and discharge management module to convert the DC high-voltage electric energy output by the power battery module into 220V AC electric energy, and the terminal device is charged according to the 220V AC electric energy;

[0035] In response to the terminal device no longer making a current request, the battery management subsystem is controlled through the charge and discharge management module to close the electric energy conversion and output link.

[0036] In the third aspect of the embodiments of the present invention, a charge and discharge control device for a power battery is provided, and the device includes:

[0037] A first determination module, configured to, in response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states, where the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeled vehicle drive link, and an electric energy conversion and output link, and the target working mode includes: a power battery charging mode, an electric two-wheeled vehicle drive mode, and an electric energy conversion and output mode;

[0038] A second determination module, configured to determine, according to the target working mode, a target interface accessed by the battery management subsystem from multiple charging and discharging interfaces, detect a power-on state of the target interface, and when it is determined that the target interface is powered on, obtain a connection confirmation signal transmitted on the target interface, determine a resistance value of a target access circuit accessing the target interface according to the connection confirmation signal, if the resistance value is within a first resistance value range, determine that the interface type of the target interface is a charging input interface, if the resistance value is within a second resistance value range, determine that the interface type of the target interface is an AC output interface, if the resistance value is within a third resistance value range, determine that the interface type of the target interface is a low-voltage DC output interface, and if the resistance value is a preset resistance value, determine that the interface type of the target interface is a high-voltage DC output interface;

[0039] An execution module, configured to determine a status signal received by the battery management subsystem according to the interface type, and generate a wake-up signal corresponding to the interface type when the status signal matches the target working mode corresponding to the interface type, and control the battery management subsystem to enter the corresponding target working module in response to the wake-up signal.

[0040] A fourth aspect of the embodiments of the present disclosure provides an electronic device, including:

[0041] A memory, on which a computer program is stored;

[0042] A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of the second aspects of the present disclosure.

[0043] Beneficial effects

[0044] The present invention provides a method, a system, a device and an electronic device for controlling charging and discharging of a power battery. Compared with the prior art, the following beneficial effects are achieved:

[0045] Through the above solution, in response to the battery management subsystem entering the power battery charging mode, the current power state of the power battery module is obtained. When the current power state meets the preset power condition, electric energy transmitted by the energy supply subsystem is received through the inverter module in the power battery charging link, and the electric energy is converted into a charging current for the power battery module through the inverter module. The charging current is used to charge the power battery module. The battery state of the power battery is monitored through the charge and discharge management module in the power battery charging link. When the battery state is in the charging cut-off state, the power battery charging link is turned off through the charge and discharge management module. Thus, an electric two-wheeler integrating power supply and a mobile power source can not only meet people's daily travel needs, but also be transformed into a portable outdoor energy storage power source under certain circumstances to meet the charging needs of people's electronic products and other electrical equipment, realizing dual use of one device and improving people's outdoor living quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a block diagram of a charge and discharge control system for a power battery shown according to an exemplary embodiment.

[0047] Figure 2 is a block diagram of another charge and discharge control system for a power battery shown according to an exemplary embodiment.

[0048] Figure 3 is a flowchart of a charge and discharge control method for a power battery shown according to an exemplary embodiment.

[0049] Figure 4 is a flowchart of a power battery charging mode shown according to an exemplary embodiment.

[0050] Figure 5 is a flowchart of an electric two-wheeler driving mode shown according to an exemplary embodiment.

[0051] Figure 6 is a flowchart of an electric energy conversion output mode shown according to an exemplary embodiment.

[0052] Figure 7 is a block diagram of a charge and discharge control device for a power battery shown according to an exemplary embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] Figure 1 is a block diagram of a charge and discharge control system for a power battery shown according to an exemplary embodiment. As Figure 1 shown, the system includes an energy supply subsystem, a battery management subsystem, an electric two-wheel vehicle drive subsystem, and a power output subsystem;

[0055] The energy supply subsystem is connected to the battery management subsystem and is used to output electrical energy to the battery management subsystem. Among them, the energy supply subsystem at least includes an on-vehicle 12V DC power supply, an electric vehicle charging power supply, a household charging power supply, and a solar power supply;

[0056] The battery management subsystem is connected to the power output subsystem and is used to provide first electrical energy to the power output subsystem. Among them, the power output subsystem is used to charge the terminal device according to the first electrical energy;

[0057] The battery management subsystem is connected to the electric two-wheel vehicle drive subsystem and is used to provide second electrical energy to the electric two-wheel vehicle drive subsystem. Among them, the electric two-wheel vehicle drive subsystem is used to convert the second electrical energy into mechanical energy of the electric two-wheel vehicle.

[0058] Optionally, the battery management subsystem includes: a power battery module, a charge and discharge management module, an inverter module, a charging input interface, a high-voltage DC output interface, an AC output interface, and a low-voltage DC output interface;

[0059] The inverter module is connected to the power battery module, the charging input interface, the high-voltage DC output interface, the AC output interface, and the low-voltage DC output interface;

[0060] The charge and discharge control module is connected to the inverter module and the power battery module;

[0061] The charging input interface is connected to the energy supply subsystem, and the high-voltage DC output interface is connected to the electric two-wheel vehicle drive subsystem;

[0062] The low-voltage DC output interface and the AC output interface are connected to the power output subsystem.

[0063] Optionally, the low-voltage DC output interface at least includes a Type-C interface, a USB interface, and a DC-12V / 10A interface; the AC output interface is a household 220V AC output interface.

[0064] Optionally, the electric two-wheel vehicle drive subsystem includes: a control module, an electric two-wheel drive motor module, and a wheel drive device;

[0065] The control module is connected to the battery management subsystem and the electric two-wheel drive motor module, and is configured to send the second electric energy to the electric two-wheel drive motor module;

[0066] The electric two-wheel drive motor module is connected to the wheel drive device, and is configured to convert the second electric energy into mechanical energy, and drive the electric two-wheel vehicle to travel according to the mechanical energy through the vehicle drive device.

[0067] Figure 2 is a block diagram of another charging and discharging control system for a power battery shown according to an exemplary embodiment, as Figure 2 shown, the system includes: an energy supply system, a mobile power system, and an electric two-wheel drive system;

[0068] Among them, the energy supply system may include an in-vehicle 12V DC power supply, an electric vehicle charging pile or an electric moped charging station, a 220V / 50Hz household power supply, a solar panel, and other energy supplies; the mobile power system includes a battery, a BMS module, an input interface, an inverter module, a high-voltage DC output interface, an AC output interface, and a low-voltage DC output interface; the electric two-wheel drive system includes a throttle switch, an acceleration device, an MCU, a drive motor, a drive wheel, and an instrument; among them, the AC output interface in the mobile power system can be externally connected to a household 220V AC electrical appliance, and the low-voltage DC output interface may include a Type-C interface, a USB interface, and a DC-12V / 10A interface.

[0069] Through the charging and discharging control system of the power battery, various types of electric energy can be converted into the charging voltage of the battery in the mobile power system through the inverter module in the mobile power system, and the battery can be charged according to the charging voltage. At the same time, the battery in the mobile power outputs a high-voltage DC power supply, and provides electric energy to the electric two-wheel drive system through the high-voltage DC output interface, so that the electric two-wheel drive system drives the electric two-wheel vehicle to travel according to the electric energy. The mobile power converts the high-voltage DC voltage output by the battery into a 220V AC voltage through the inverter module, and outputs a 220V AC voltage through the AC output interface to provide electric energy for household AC electrical appliances. At the same time, the mobile power converts the high-voltage DC voltage output by the battery into a low-voltage DC voltage through the inverter module, and charges the electronic devices carried by the user through the low-voltage DC output interface.

[0070] Figure 3 is a flowchart of a charging and discharging control method for a power battery shown according to an exemplary embodiment, as Figure 3 shown, this method is applied to the system in the above embodiment, and this method includes the following steps.

[0071] Step S101, in response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states.

[0072] Exemplarily, in response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states, where the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeled vehicle driving link, and a power conversion output link, and the target working modes include: a power battery charging mode, an electric two-wheeled vehicle driving mode, and a power conversion output mode.

[0073] Step S102, determine the target interface accessing the battery management subsystem from multiple charge and discharge interfaces according to the target working mode, and determine the interface type of the target interface.

[0074] Exemplarily, determine the target interface accessing the battery management subsystem from multiple charge and discharge interfaces according to the target working mode, detect the power-on state of the target interface, and in the case of determining that the target interface is powered on, obtain the connection confirmation signal transmitted on the target interface, determine the resistance value of the target access circuit accessing the target interface according to the connection confirmation signal, if the resistance value is within the range of the first resistance value interval, determine that the interface type of the target interface is a charging input interface, if the resistance value is within the range of the second resistance value interval, determine that the interface type of the target interface is an AC output interface, if the resistance value is within the range of the third resistance value interval, determine that the interface type of the target interface is a low-voltage DC output interface, if the resistance value is a preset resistance value, determine that the interface type of the target interface is a high-voltage DC output interface;

[0075] Step S103, control the battery management subsystem to enter the corresponding target working module according to the interface type.

[0076] Exemplarily, determine the status signal received by the battery management subsystem according to the interface type, and in the case where the status signal matches the target working mode corresponding to the interface type, generate a wake-up signal corresponding to the interface type, and in response to the wake-up signal, control the battery management subsystem to enter the corresponding target working module.

[0077] Optionally, the power battery charging mode includes:

[0078] In response to the battery management subsystem entering the power battery charging mode, obtain the current power status of the power battery module;

[0079] When the current power state meets the preset power condition, the inverter module in the power battery charging link receives the electric energy transmitted by the energy supply subsystem, and the inverter module converts the electric energy into a charging current for the power battery module, and the charging current is used to charge the power battery module;

[0080] The charge and discharge management module in the power battery charging link monitors the battery state of the power battery. When the battery state is the charging cut-off state, the power battery charging link is turned off through the charge and discharge management module.

[0081] Exemplarily, Figure 4 is a flowchart of a power battery charging mode shown according to an exemplary embodiment, as Figure 4 shown, and this power battery charging mode includes the following steps.

[0082] 1. The BMS reads the current state of the battery and determines whether charging is required according to the power state;

[0083] 2. In response to the conduction of the charging switch, the inverter converts the current input through the input interface into a charging current for the battery, and the battery pack is charged according to the charging current;

[0084] 3. The BMS monitors the battery state in real time during the charging process;

[0085] 4. After reaching the charging cut-off state, the BMS automatically turns off the charging switch to stop charging;

[0086] Optionally, the driving mode of the electric two-wheeled vehicle includes:

[0087] In response to the battery management subsystem entering the driving mode of the electric two-wheeled vehicle, the charge and discharge management module of the battery management subsystem determines the current battery state of the power battery module

[0088] When the current battery state meets the preset discharge condition, the electric energy of the power battery module is transmitted to the driving subsystem of the electric two-wheeled vehicle through the high-voltage DC output interface, and the electric energy is used to drive the driving motor in the driving subsystem of the electric two-wheeled vehicle to rotate, so that the electric two-wheeled vehicle travels.

[0089] Exemplarily, Figure 5 is a flowchart of a driving mode of an electric two-wheeled vehicle shown according to an exemplary embodiment, as Figure 5 shown, and this driving mode of the electric two-wheeled vehicle includes the following steps.

[0090] 1. Detect the assist switch in response to the conduction of the throttle switch in the electric two-wheeler drive system;

[0091] 2. When starting the vehicle acceleration device, the motor controller MCU receives a signal and determines whether the vehicle state is drivable;

[0092] 3. When the electric two-wheeler is drivable, send a discharge request to the BMS;

[0093] 4. If the vehicle does not meet the driving state, display an alarm through the instrument and stop discharging;

[0094] 5. The BMS determines whether the current battery pack state can be discharged;

[0095] 6. If it can be discharged, the electrical energy of the battery pack is transmitted to the motor controller through the high-voltage DC output interface;

[0096] 7. The motor controller drives the motor to rotate;

[0097] 8. Drive the wheels to rotate, thereby realizing the normal driving of the electric two-wheeler;

[0098] 9. If the BMS determines that the battery pack has not reached the dischargeable state;

[0099] 10. Then display an alarm through the instrument and stop discharging.

[0100] Optionally, the electric energy conversion and output mode includes:

[0101] In response to the battery management subsystem entering the electric energy conversion and output mode, perform self-check on the power battery module through the charge and discharge management module in the battery management subsystem;

[0102] When it is determined that there is no abnormality in the power battery module, control the power battery module to enter the standby state through the charge and discharge management module;

[0103] In response to the insertion of a terminal device into the corresponding interface, determine the device type of the terminal device;

[0104] When it is determined that the device type is a low-voltage DC power-consuming device, control the inverter module in the battery management subsystem to convert the DC high-voltage electrical energy output by the power battery module into DC low-voltage electrical energy through the charge and discharge management module, and charge the terminal device according to the DC low-voltage electrical energy;

[0105] When it is determined that the device type is a household AC electrical device, the charging and discharging management module controls the inverter module in the battery management subsystem to convert the DC high-voltage electrical energy output by the power battery module into 220V AC electrical energy, and charges the terminal device according to the 220V AC electrical energy;

[0106] In response to the terminal device no longer making a current request, the charging and discharging management module controls the battery management subsystem to close the power conversion output link.

[0107] Exemplarily, Figure 6 is a flowchart of a power conversion output mode shown according to an exemplary embodiment, as Figure 6 shown, and this power conversion output mode includes the following steps.

[0108] 1. In response to the activation of the mobile power switch, the BMS performs a self-check on the current state of the battery to determine whether the power supply state is abnormal;

[0109] 2. When the battery state is normal, control the mobile power to enter the standby state;

[0110] 3. Detect that there is a power-consuming device inserted into the interface;

[0111] 4. Start the inverter module according to the type of the power-consuming device inserted into the interface;

[0112] 5. Detect that if it is a low-voltage DC power-consuming device, use the DC-DC converter in the inverter module to convert the DC high voltage of the battery pack into DC low voltage for the low-voltage power-consuming device to use;

[0113] 6. Detect that if it is a household AC electrical device, use the inverter module to convert the direct current of the battery pack into 220V alternating current for the AC electrical device to use;

[0114] 7. Detect whether the electrical appliance is fully charged or disconnected. When the electrical appliance is fully charged, turn off the discharge switch and display the end of charging at the corresponding position.

[0115] With the above solution, in response to the battery management subsystem entering the power battery charging mode, the current power state of the power battery module is obtained. When the current power state meets the preset power condition, electric energy transmitted by the energy supply subsystem is received through the inverter module in the power battery charging link, and the electric energy is converted into a charging current for the power battery module through the inverter module. The charging current is used to charge the power battery module. The battery state of the power battery is monitored through the charge and discharge management module in the power battery charging link. When the battery state is the charge cut-off state, the power battery charging link is turned off through the charge and discharge management module. Thus, an electric two-wheeler integrating power supply and mobile power supply can not only meet people's daily travel needs, but also be transformed into a portable outdoor energy storage power supply under certain circumstances to meet the charging needs of people's electronic products and other electrical equipment, realizing dual use of one device and improving people's outdoor life quality.

[0116] Figure 7 is a block diagram of a charge and discharge control device for a power battery shown according to an exemplary embodiment, as Figure 7 shown, the device 100 includes: a first determination module 110, a second determination module 120, and an execution module 130.

[0117] The first determination module 110 is configured to, in response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states. Among them, the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeler driving link, and an electric energy conversion output link. The target working modes include: a power battery charging mode, an electric two-wheeler driving mode, and an electric energy conversion output mode;

[0118] The second determination module 120 is configured to determine a target interface connected to the battery management subsystem from multiple charge and discharge interfaces according to the target working mode, detect the power-on state of the target interface, obtain a connection confirmation signal transmitted on the target interface when it is determined that the target interface is powered on, determine the resistance value of the target access circuit connected to the target interface according to the connection confirmation signal. If the resistance value is within the range of the first resistance value interval, it is determined that the interface type of the target interface is a charging input interface. If the resistance value is within the range of the second resistance value interval, it is determined that the interface type of the target interface is an AC output interface. If the resistance value is within the range of the third resistance value interval, it is determined that the interface type of the target interface is a low-voltage DC output interface. If the resistance value is a preset resistance value, it is determined that the interface type of the target interface is a high-voltage DC output interface;

[0119] An execution module 130, configured to determine a status signal received by the battery management subsystem according to the interface type, and generate a wake-up signal corresponding to the interface type when the status signal matches the target working mode corresponding to the interface type, and control the battery management subsystem to enter the corresponding target working module in response to the wake-up signal.

[0120] Optionally, the device 100 further includes a charging module, and the charging module is configured to:

[0121] Acquire the current power state of the power battery module in response to the battery management subsystem entering the power battery charging mode;

[0122] When the current power state meets a preset power condition, receive the electric energy transmitted by the energy supply subsystem through an inverter module in the power battery charging link, and convert the electric energy into a charging current for the power battery module through the inverter module, and the charging current is used to charge the power battery module;

[0123] Monitor the battery state of the power battery through a charge and discharge management module in the power battery charging link, and turn off the power battery charging link through the charge and discharge management module when the battery state is a charging cut-off state.

[0124] Optionally, the device 100 further includes a driving module, and the driving module is configured to:

[0125] In response to the battery management subsystem entering the electric two-wheeled vehicle driving mode, determine the current battery state of the power battery module through the charge and discharge management module of the battery management subsystem

[0126] When the current battery state meets a preset discharge condition, transmit the electric energy of the power battery module to the electric two-wheeled vehicle driving subsystem through a high-voltage DC output interface, and the electric energy is used to drive a driving motor in the electric two-wheeled vehicle driving subsystem to rotate, so that the electric two-wheeled vehicle travels.

[0127] Optionally, the device 100 further includes an output module, and the output module is configured to:

[0128] In response to the battery management subsystem entering the power conversion output mode, perform self-check on the power battery module through the charge and discharge management module in the battery management subsystem;

[0129] When it is determined that there is no abnormality in the power battery module, control the power battery module to enter the standby state through the charge and discharge management module;

[0130] Upon insertion of a corresponding interface into the terminal device, determine the device type of the terminal device;

[0131] When it is determined that the device type is a low-voltage DC power-consuming device, control, through the charge and discharge management module, the inverter module in the battery management subsystem to convert the DC high-voltage electrical energy output by the power battery module into DC low-voltage electrical energy, and charge the terminal device according to the DC low-voltage electrical energy;

[0132] When it is determined that the device type is a household AC power-consuming device, control, through the charge and discharge management module, the inverter module in the battery management subsystem to convert the DC high-voltage electrical energy output by the power battery module into 220V AC electrical energy, and charge the terminal device according to the 220V AC electrical energy;

[0133] In response to the terminal device no longer making a current request, control, through the charge and discharge management module, the battery management subsystem to close the power conversion output link.

[0134] Through the above solution, in response to the battery management subsystem entering the power battery charging mode, obtain the current power state of the power battery module. When the current power state meets the preset power condition, receive the electrical energy transmitted by the energy supply subsystem through the inverter module in the power battery charging link, and convert the electrical energy into the charging current of the power battery module through the inverter module. The charging current is used to charge the power battery module. Monitor the battery state of the power battery through the charge and discharge management module in the power battery charging link. When the battery state is the charging cut-off state, close the power battery charging link through the charge and discharge management module. Thus, an electric two-wheeler integrating power supply and a mobile power supply can not only meet people's daily travel needs, but also be transformed into a portable outdoor energy storage power supply under certain circumstances, meet the charging needs of people's electronic products and other electrical devices, achieve dual use of one machine, and improve people's outdoor living quality.

[0135] In another embodiment, an electronic device is provided, including:

[0136] A memory, on which a computer program is stored;

[0137] A processor, configured to execute the computer program in the memory to implement the steps of the charge and discharge control method of the power battery.

[0138] Enlightened by the above ideal embodiments according to the present application, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

[0139] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charge and discharge control method for a power battery, characterized in that, it is applied to a charge and discharge control system of a power battery. The charge and discharge control system of the power battery includes: an energy supply subsystem, a battery management subsystem, an electric two-wheeled vehicle drive subsystem, and a power output subsystem. The method includes: In response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states. Among them, the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeled vehicle drive link, and a power conversion output link. The target working mode includes any one of the following: a power battery charging mode, an electric two-wheeled vehicle drive mode, and a power conversion output mode; Determine the target interface connected to the battery management subsystem from multiple charge and discharge interfaces according to the target working mode, detect the power-on state of the target interface, and in the case of determining that the target interface is powered on, obtain the connection confirmation signal transmitted on the target interface, and determine the resistance value of the target access circuit connected to the target interface according to the connection confirmation signal. If the resistance value is within the range of the first resistance value interval, determine that the interface type of the target interface is a charging input interface; if the resistance value is within the range of the second resistance value interval, determine that the interface type of the target interface is an AC output interface; if the resistance value is within the range of the third resistance value interval, determine that the interface type of the target interface is a low-voltage DC output interface; if the resistance value is a preset resistance value, determine that the interface type of the target interface is a high-voltage DC output interface; Determine the status signal received by the battery management subsystem according to the interface type. In the case where the status signal matches the target working mode corresponding to the interface type, generate a wake-up signal corresponding to the interface type, and in response to the wake-up signal, control the battery management subsystem to enter the corresponding target working mode.

2. The method according to claim 1, characterized in that, the power battery charging mode includes: In response to the battery management subsystem entering the power battery charging mode, obtain the current power state of the power battery module; When the current power state meets the preset power condition, receive the electric energy transmitted by the energy supply subsystem through the inverter module in the power battery charging link, and convert the electric energy into a charging current for the power battery module through the inverter module. The charging current is used to charge the power battery module; Monitor the battery state of the power battery through the charge and discharge management module in the power battery charging link. In the case where the battery state is a charging cut-off state, close the power battery charging link through the charge and discharge management module.

3. The method according to claim 1, characterized in that, the electric two-wheeled vehicle drive mode includes: In response to the battery management subsystem entering the electric two-wheeled vehicle driving mode, the current battery state of the power battery module is determined through the charge and discharge management module of the battery management subsystem. When the current battery state meets the preset discharge conditions, the electric energy of the power battery module is transmitted to the electric two-wheeled vehicle drive subsystem through the high-voltage DC output interface, and the electric energy is used to drive the drive motor in the electric two-wheeled vehicle drive subsystem to rotate, so that the electric two-wheeled vehicle can travel.

4. The method according to claim 1, characterized in that, the electric energy conversion output mode includes: In response to the battery management subsystem entering the electric energy conversion output mode, the power battery module is self-checked through the charge and discharge management module in the battery management subsystem; When it is determined that the power battery module is normal, the charge and discharge management module is used to control the power battery module to enter the standby state; In response to the insertion of a terminal device into the corresponding interface, the device type of the terminal device is determined; When it is determined that the device type is a low-voltage DC power-consuming device, the charge and discharge management module is used to control the inverter module in the battery management subsystem to convert the DC high-voltage electric energy output by the power battery module into DC low-voltage electric energy, and charge the terminal device according to the DC low-voltage electric energy; When it is determined that the device type is a household AC power-consuming device, the charge and discharge management module is used to control the inverter module in the battery management subsystem to convert the DC high-voltage electric energy output by the power battery module into 220V AC electric energy, and charge the terminal device according to the 220V AC electric energy; In response to the terminal device no longer making a current request, the charge and discharge management module is used to control the battery management subsystem to close the electric energy conversion output link.

5. A charge and discharge control device for a power battery, characterized in that, the device includes: A first determination module, configured to, in response to the activation of the battery management subsystem, obtain the conduction states of the link switches corresponding to multiple charge and discharge links in the battery management subsystem, and determine the target working mode of the battery management subsystem according to the conduction states, where the multiple charge and discharge links at least include: a power battery charging link, an electric two-wheeled vehicle drive link, and an electric energy conversion output link, and the target working mode includes any one of the following: a power battery charging mode, an electric two-wheeled vehicle drive mode, and an electric energy conversion output mode; A second determination module, configured to determine, according to the target working mode, a target interface accessing the battery management subsystem from multiple charging and discharging interfaces, detect the power-on state of the target interface, obtain a connection confirmation signal transmitted on the target interface when it is determined that the target interface is powered on, determine the resistance value of a target access circuit accessing the target interface according to the connection confirmation signal, if the resistance value is within a first resistance value range, determine that the interface type of the target interface is a charging input interface, if the resistance value is within a second resistance value range, determine that the interface type of the target interface is an AC output interface, if the resistance value is within a third resistance value range, determine that the interface type of the target interface is a low-voltage DC output interface, and if the resistance value is a preset resistance value, determine that the interface type of the target interface is a high-voltage DC output interface; An execution module, configured to determine a status signal received by the battery management subsystem according to the interface type, generate a wake-up signal corresponding to the interface type when the status signal matches the target working mode corresponding to the interface type, and control the battery management subsystem to enter the corresponding target working mode in response to the wake-up signal.

6. An electronic device, characterized in that, it includes: a memory, on which a computer program is stored; a processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1-4.

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