Charging control method

Abstract

A charging control method, a charging circuit, a charging control apparatus, an electrical device, a readable storage medium, a program product, and a vehicle, relating to the technical field of charging control. The charging control method comprises: on the basis of a first instruction, when a preset condition is met, controlling an electric device to be disconnected from a battery, and controlling a current conversion apparatus to be disconnected from the battery; and controlling the current conversion apparatus to be connected to an external power supply device, and controlling the current conversion apparatus to be connected to the electric device, so as to supply power to the electric device, wherein the first instruction is used for instructing to start the electric device.

Description

Charging control method

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411224248.6, filed on September 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of charging control technology, and more specifically, to a charging control method, a charging circuit, a charging control device, an electrical device, a readable storage medium, a program product, and a vehicle. Background Technology

[0004] With technological advancements, some electrical appliances (such as automobiles) support scheduled use and scheduled operating conditions (e.g., for a car, scheduled conditions could include battery preheating and air conditioning activation). Users typically want the battery to reach a first target charge level when using these appliances. However, these scheduled operating conditions deplete the battery, contradicting user expectations. Related technologies mitigate this through power-down replenishment schemes. This involves stopping charging once the battery reaches the first target charge level (e.g., 100%, 98%), and then recharging when the battery level drops to a second target charge level (e.g., 95%, 90%) during scheduled use, stopping charging again once the first target charge level is reached. However, this results in repeated charging and discharging between the first and second target charge levels, posing a significant safety hazard. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application proposes a charging control method, a charging circuit, a charging control device, an electrical device, a computer-readable storage medium, a computer program product, and a vehicle.

[0006] This application provides a charging control method for use in electrical equipment, including:

[0007] According to the first instruction, under the condition that the preset conditions are met, the electrical equipment is disconnected from the battery and the current conversion device is disconnected from the battery.

[0008] The control current conversion device is connected to the external power supply equipment, and the control current conversion device is connected to the electrical equipment to supply power to the electrical equipment;

[0009] The first instruction is used to instruct the electrical equipment to be started.

[0010] This application provides a charging circuit, including:

[0011] Battery, main contactor, and current conversion device;

[0012] The main contactor connects the battery to the electrical equipment;

[0013] A connection port for connecting electrical equipment is provided between the current conversion device and the main contactor.

[0014] In the first operating mode, the main contactor is closed; the current conversion device is connected to the external power supply equipment; the current conversion device is connected to the battery.

[0015] In the second operating mode, the main contactor is disconnected, and the current conversion device and battery are disconnected; the current conversion device is electrically connected to the electrical equipment at the connection port; the current conversion device is connected to the external power supply equipment.

[0016] This application provides a charging control device for use in electrical equipment, comprising:

[0017] The first processing module is used to control the electrical equipment to disconnect from the battery and the current conversion device to disconnect from the battery, according to the first instruction and under the condition of meeting the preset conditions.

[0018] The second processing module is used to control the connection between the current conversion device and the external power supply equipment, and to control the connection between the current conversion device and the power-consuming equipment, so as to supply power to the power-consuming equipment.

[0019] The first instruction is used to instruct the electrical equipment to be started.

[0020] This application provides an electrical device, and the charging control method is applied to the electrical device.

[0021] This application provides an electrical device that includes a charging control device.

[0022] This application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a charging control method.

[0023] This application provides a non-transitory computer-readable storage medium storing a computer program thereon, which implements a charging control method when executed by a processor.

[0024] This application provides a chip including a processor and a communication interface coupled to the processor, which is used to run programs or instructions to implement a charging control method.

[0025] This application provides a computer program product, including a computer program that, when executed by a processor, implements a charging control method.

[0026] This application provides a vehicle, which includes a vehicle controller, a battery management system, and an on-board charger;

[0027] The vehicle controller is used for:

[0028] According to the first instruction, under the condition that the preset conditions are met, the battery management system controls the electrical equipment to disconnect from the battery, and the battery management system controls the on-board charger to disconnect from the battery.

[0029] Control the connection between the vehicle charger and the charging pile, and control the connection between the vehicle charger and the electrical equipment to supply power to the electrical equipment;

[0030] The first instruction is used to instruct the electrical equipment to be started.

[0031] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects:

[0032] This application embodiment supplies power to the electrical device directly through an external power supply device, which can avoid the electrical device consuming battery power after the preset conditions are met, avoid the battery being frequently charged and discharged, and also allow the user to keep the battery at the target charge level when using the electrical device.

[0033] In addition, compared to powering electrical devices with batteries, directly powering electrical devices with external power supplies can reduce energy conversion and improve energy utilization.

[0034] In addition, the control device disconnects from the battery and / or controls the current conversion device to disconnect from the battery, controls the current conversion device to connect to the device and the external power supply device to connect to the current conversion device, so as to meet the power supply needs of the device while avoiding repeated charging and discharging of the battery, reducing the need for frequent push notifications of charging and discharging information to users, and avoiding excessive disturbance to users.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 is a schematic flowchart of one of the charging control methods provided in the embodiments of this application;

[0038] Figure 2 is a schematic diagram of the interface for entering the reservation status information of electrical equipment in a specific scenario according to an embodiment of this application;

[0039] Figure 3 is a second schematic flowchart of the charging control method provided in the embodiments of this application;

[0040] Figure 4 is a schematic diagram of the connection between the electrical equipment and the external power supply equipment provided in the embodiment of this application;

[0041] Figure 5 is a schematic diagram of the charging control device provided in an embodiment of this application;

[0042] Figure 6 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0044] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0045] With technological advancements, some electrical appliances (such as cars) support scheduled use and scheduled operating conditions (e.g., for a car, scheduled operating conditions could include preheating the battery and turning on the air conditioning). Users typically want the battery to reach a target charge level when using these appliances; however, these scheduled operating conditions consume battery power, which doesn't meet user expectations.

[0046] Related technologies alleviate this phenomenon through a power-down replenishment scheme, which involves ending charging after the battery reaches a first target level (e.g., 100% or 98%), and then recharging the battery when it drops to a second target level (e.g., 95% or 90%) during scheduled power usage, until the first target level is reached and charging ends again.

[0047] The drawbacks of the related technology are also obvious: ① Electrical devices will repeatedly charge and discharge between the first target charge level and the second target charge level, which poses a significant safety hazard and affects the SOC (State of Charge) correction; ② When users use electrical devices, the SOC may be between the first target charge level and the second target charge level, and may not be the first target charge level, which does not match the user's expectations; ③ The phone will push charging messages to the user every time it is turned on and off, which may cause inconvenience to the user.

[0048] To address the aforementioned problems, embodiments of this application provide a charging control method, a charging circuit, a charging control device, an electrical appliance, a computer-readable storage medium, a computer program product, and a vehicle.

[0049] The charging control method, charging circuit, charging control device, electrical equipment, computer-readable storage medium, computer program product, and vehicle provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0050] In some embodiments, the charging control method can be applied to electrical equipment, specifically, to the battery management system of the electrical equipment. Electrical equipment includes devices that store energy via batteries, including but not limited to vehicles (e.g., electric vehicles), ships, and aircraft.

[0051] As shown in Figure 1, the charging control method includes steps 110 and 120.

[0052] Step 110: According to the first instruction, under the condition that the preset conditions are met, control the electrical equipment to disconnect from the battery and control the current conversion device to disconnect from the battery; the first instruction is used to instruct the electrical equipment to start.

[0053] The charging control method of this application embodiment can be applied to electrical equipment. When the battery device is a vehicle, the charging control method can be specifically applied to the vehicle control unit (VCU). The VCU is a key component in electric vehicles and hybrid vehicles, responsible for coordinating and managing various electronic systems and functions of the vehicle.

[0054] In this application, the battery refers to a power battery pack (or power battery stack). A power battery pack typically consists of multiple battery cells that store electrical energy and supply it to the electric motor of electrical equipment to drive the motor. For vehicles, the performance of the power battery pack directly affects the vehicle's range, acceleration, and overall efficiency.

[0055] The current conversion device in this application embodiment is responsible for converting alternating current (AC) supplied by an external power supply device into direct current (DC). For vehicles, this external power supply device can specifically be an on-board charger (OBC).

[0056] In this application, the external power supply device refers to a device connected to the electrical equipment that can supply power to the electrical equipment, such as a charging pile.

[0057] The electrical equipment in this application embodiment can be electrical equipment with a large power (greater than the target power). For vehicles, such electrical equipment includes, but is not limited to, a battery preheating system (such as an electric heating element) for preheating the battery and an air conditioning system for heating / cooling the passenger compartment.

[0058] In addition, in some solutions, battery preheating is also carried out by the air conditioning system (the battery is surrounded by pipes containing water or other liquids, and the battery can be preheated by heating the pipes). In this case, the battery preheating system is a subsystem of the air conditioning system, meaning that the air conditioning system can perform multiple functions such as battery preheating and warming the passenger compartment.

[0059] The first instruction is used to instruct the electrical equipment to start. This first instruction can be generated based on the user's real-time operation. For example, if the user directly turns on the air conditioner in the passenger compartment of the vehicle, the vehicle's on-board controller can obtain the first instruction to start the air conditioner.

[0060] The first instruction can also be generated based on the reservation conditions entered by the user. For example, if the reservation condition is to use the vehicle at the first target time (e.g., 9 o'clock) and the battery is preheated, then the vehicle's on-board controller can obtain the first instruction to start the preheating system at the second target time (e.g., 8:50), which is earlier than the first target time.

[0061] In this embodiment of the application, after obtaining the first instruction, it is determined whether the preset conditions are met.

[0062] In some embodiments, the preset conditions include the battery reaching the target charge level, the electrical device and the charging gun being connected, the electrical device being in the target state, and having the target permission to use an external power supply device.

[0063] The target battery level is a preset threshold, such as 98% or 100% battery capacity. Once the battery reaches the target level, charging can be stopped.

[0064] The target state is OFF.

[0065] The target permission is the permission that does not restrict electrical equipment from using external power supply equipment. When the external power supply equipment is a charging pile, the target permission indicates that the charging pile is a private charging pile.

[0066] Under the above preset conditions, in order to avoid the battery power from decreasing due to the power consumption of the electrical equipment, the electrical equipment and the battery need to be disconnected, and the charger and the battery need to be disconnected. Therefore, it is necessary to determine whether the electrical equipment and the battery are disconnected, and whether the charger and the battery are disconnected.

[0067] When the electrical equipment and battery are not disconnected, the system controls the disconnection of the electrical equipment from the battery. Specifically, a main contactor is installed between the battery and the electrical equipment, which can be used to disconnect the electrical equipment from the battery. The main contactor is an electrical device used in power systems, primarily for controlling the switching on and off of battery current.

[0068] Specifically, batteries typically power the main circuit (also known as the high-voltage circuit) of electrical equipment. The power of the electrical equipment in the target circuit is usually not less than the target power, which is a power threshold, such as 3KW. The battery can be disconnected from the electrical equipment by controlling the disconnection between the battery and the target circuit, so that the battery can disconnect from the electrical equipment in the target circuit.

[0069] In practical applications, the target circuit can be disconnected, thereby disconnecting the battery from the electrical equipment in the target circuit.

[0070] Once the battery level is determined to have reached the target level, the charger and battery will be disconnected while still connected.

[0071] Specifically, the charger and battery can be disconnected by controlling the switch between them.

[0072] In addition, after receiving the first instruction, if it is confirmed that the charger is electrically connected to the charging station, the charger is connected to the battery, and the battery power has not reached the target power (e.g., 100%), the battery can continue to be charged through the charging station. The OBC converts the AC power of the charging station into DC power to charge the battery.

[0073] According to the first instruction, when the battery power reaches the target power level, the device is disconnected from the battery and the charger is disconnected from the battery, so that the battery is not frequently charged and discharged. At the same time, it can also meet the requirement that the battery power reaches the target power level when the user uses the electrical device.

[0074] Step 120: Connect the control current conversion device to the external power supply equipment and connect the control current conversion device to the electrical equipment to supply power to the electrical equipment.

[0075] The first instruction is used to instruct the electrical equipment to start. The electrical equipment needs electricity to start. After the electrical equipment is disconnected from the battery, the current conversion device can be connected to the electrical equipment. This allows the electrical energy from the external power supply equipment to be transmitted to the electrical equipment through the current conversion device, that is, the external power supply equipment directly supplies power to the electrical equipment, which can reduce energy conversion and improve energy utilization.

[0076] This application embodiment supplies power to the electrical device directly through an external power supply device, which can avoid the electrical device consuming battery power after the preset conditions are met, avoid the battery being frequently charged and discharged, and also allow the user to keep the battery at the target charge level when using the electrical device.

[0077] In addition, compared to powering electrical equipment with batteries, directly powering electrical equipment with charging piles can reduce energy conversion and improve energy utilization.

[0078] In addition, the control device disconnects from the battery and / or controls the current conversion device to disconnect from the battery, controls the current conversion device to connect to the device and the external power supply device to connect to the current conversion device, so as to meet the power supply needs of the device while avoiding repeated charging and discharging of the battery, reducing the need for frequent push notifications of charging and discharging information to users, and avoiding excessive disturbance to users.

[0079] In some embodiments, after the control current conversion device is connected to an external power supply device and the control current conversion device is connected to the power-consuming device, the method further includes:

[0080] The control current conversion device transmits electrical energy from the external power supply equipment to the electrical equipment according to a constant target voltage;

[0081] The target voltage is the smaller of the requested input voltage of the electrical equipment and the rated output voltage of the external power supply equipment.

[0082] In this embodiment of the application, after the control current conversion device is connected to the electrical equipment and the external power supply device is connected to the current conversion device, it is necessary to control the current conversion device to transmit the power of the external power supply device to the electrical equipment. Since the requested input voltage of the electrical equipment is usually high voltage (greater than the voltage threshold), for example, the requested input voltage of the air conditioning system is 300 volts, while the rated output voltage of the external power supply device is not necessarily high voltage, for example, the rated output voltage of the charging pile is 220 volts. That is to say, the rated output voltage of the external power supply device may be less than the requested input voltage required by the electrical equipment, exceeding the voltage supply capacity that the external power supply device can provide.

[0083] In this application embodiment, the requested input voltage can be determined by the battery management system based on the requested input power and current.

[0084] To avoid the above situation, the embodiments of this application compare the requested input voltage of the electrical equipment with the rated output voltage of the external power supply equipment, determine the smaller voltage between the two, and use the smaller voltage as the target voltage.

[0085] After obtaining the target voltage, the current conversion device can be controlled to transmit electrical energy from the external power supply equipment to the electrical device according to the constant target voltage. During the process of supplying power to the electrical device, the current conversion device converts the AC power provided by the external power supply equipment into DC power and supplies the DC power to the electrical device.

[0086] In some embodiments, the electrical equipment includes a first electrical equipment and a second electrical equipment;

[0087] The control current conversion device transmits electrical energy from an external power supply to the power-consuming equipment according to a constant target voltage, including:

[0088] The control current conversion device transmits electrical energy from the external power supply equipment to the first electrical device according to a constant first target voltage; the first target voltage is the smaller of the requested input voltage of the first electrical device and the rated output voltage of the external power supply equipment.

[0089] If it is determined that the current conversion device and the first electrical device are disconnected, control the current conversion device to connect to the second electrical device;

[0090] The control current conversion device transmits electrical energy from the external power supply equipment to the second electrical device according to a constant second target voltage; the second target voltage is the smaller of the requested input voltage of the second electrical device and the rated output voltage of the external power supply equipment.

[0091] In this embodiment of the application, since the electrical equipment used by the battery is usually high-voltage equipment, such as the battery preheating system and the air conditioning system in some vehicles, which are two high-voltage electrical equipment, when there are multiple electrical equipment, such as the battery preheating system and the air conditioning system being turned on at the same time, it is very likely to cause the load power to be too large and the constant voltage to be degraded. Therefore, when there are multiple electrical equipment, each electrical equipment is usually powered separately to avoid excessive load.

[0092] Assuming that the multiple electrical devices include a first electrical device and a second electrical device, then, for the first electrical device, the smaller of the first requested input voltage of the first electrical device and the rated output voltage of the external power supply device can be used as the first target voltage; for the second electrical device, the smaller of the second requested input voltage of the second electrical device and the rated output voltage of the external power supply device can be used as the second target voltage.

[0093] To avoid overloading and causing the constant voltage to drop, when both the first and second electrical devices need power, power can be supplied to the first and second electrical devices sequentially, that is, power can be supplied to the second electrical device after the first electrical device has been powered.

[0094] Specifically, the control current conversion device transmits electrical energy from the external power supply equipment to the battery preheating system according to a constant first target voltage; after determining that the battery preheating system is turned off, the control current conversion device is disconnected from the battery preheating system and connected to the air conditioning system, and the control current conversion device transmits electrical energy from the external power supply equipment to the air conditioning system according to a constant second target voltage.

[0095] Assuming the first electrical device has a higher priority than the second electrical device, the current conversion device can be controlled to transmit power from the external power supply device to the first electrical device according to a constant first target voltage. If the current conversion device and the first electrical device are disconnected, the current conversion device and the second electrical device can be connected. Then, the current conversion device can be controlled to transmit power from the external power supply device to the second electrical device according to a constant second target voltage.

[0096] In practical applications, different priorities can be set for different electrical devices in different scenarios. For example, in a scheduled operation scenario, the first electrical device can be the battery preheating system, and the second electrical device can be the air conditioning system. That is, the battery preheating system is powered first, and then the air conditioning system is powered after the battery preheating system is powered. This is because users can usually perceive the temperature of the air conditioner, while they usually cannot perceive the temperature of the battery preheating system. When a user schedules the start of both the battery preheating system and the air conditioning system, to improve the user experience, the battery preheating system can be powered first, and then the air conditioning system can be powered after the battery preheating system is powered.

[0097] Of course, in some other scenarios, such as instant power supply scenarios, in order to improve the user experience, the air conditioning system can be powered first, and then the battery preheating system can be powered. For details, please refer to the aforementioned embodiments, and there are no restrictions on this.

[0098] In some embodiments, the electrical equipment includes a first electrical equipment and a second electrical equipment;

[0099] The control current conversion device transmits electrical energy from the external power supply equipment to the electrical device according to a constant target voltage, and also includes:

[0100] When the rated output power of the external power supply equipment is not less than the sum of the requested input power of the first power user and the requested input power of the second power user, the control current conversion device transmits the electrical energy of the external power supply equipment to the first power user and the second power user simultaneously according to a constant third target voltage.

[0101] The third target voltage is the smaller voltage between the rated output voltage of the external power supply device and the sum of the requested input voltage of the first electrical device and the requested voltage of the second electrical device.

[0102] When the rated output power of the external power supply device is large, that is, when the rated output power of the external power supply device is not less than the sum of the requested input power of the first electrical device and the requested input power of the second electrical device. For example, when the rated output power of the charging pile is 10kw, 11kw, 22kw, etc., the requested input voltage of the air conditioning system is 3kw, and the requested input voltage of the battery preheating system is 4kw. The rated output power of the charging pile is greater than the sum of the requested input voltage of the air conditioning system and the requested input voltage of the battery preheating system. In this case, the charging pile can supply power to two electrical devices simultaneously.

[0103] Specifically, the control current conversion device simultaneously transmits the electric energy of the external power supply device to the first electrical device and the second electrical device according to the constant third target voltage. The third target voltage is the smaller voltage between the rated output voltage of the external power supply device and the sum of the requested input voltage of the first electrical device and the requested voltage of the second electrical device.

[0104] For example, it is possible to determine the sum Km of the requested input voltage k1 of the battery preheating system and the requested voltage k2 of the air conditioning system, and the rated output voltage Kn of the charging pile. If Km > Kn, the third target voltage is Kn. If Km < Kn, the third target voltage is Km.

[0105] In some embodiments, before, according to the first instruction, and when the preset conditions are met, the method further includes:

[0106] Receiving reservation working condition information for the electrical device;

[0107] Generating a first instruction according to the reservation working condition information;

[0108] After the control current conversion device is connected to the electrical device and the external power supply device is connected to the current conversion device, the method further includes:

[0109] Controlling the electrical device to start and execute the reservation working condition information.

[0110] The embodiments of the present application support users to set reservation working condition information for electrical appliances. For electrical devices that the user intends to turn on or use in advance, the user can set corresponding reservation working condition information accordingly. The reservation working condition information is used to indicate the working conditions that the electrical device needs to execute at a preset moment. For example, for the air conditioning system, the corresponding reservation working condition information can be to set the air conditioning temperature to 26 degrees; for the battery preheating system, the corresponding reservation working condition information can be that the battery preheating system has completed preheating.

[0111] One or more operating conditions can be set for a single electrical device. For example, some vehicles' air conditioning systems can both heat the passenger compartment and preheat the battery. Users can set two scheduled operating conditions for the air conditioning system: heating the passenger compartment and preheating the battery.

[0112] The first instruction for starting the electrical equipment can be generated based on the scheduled working conditions information.

[0113] To avoid repeated charging of the battery and to avoid repeated changes in SOC, the embodiments of this application typically control the electrical equipment to start and execute the scheduled operating condition information after the control current conversion device is connected to the electrical equipment and the external power supply device is connected to the current conversion device.

[0114] As shown in Figure 2, this application embodiment provides a schematic diagram of an interface for entering the reservation status information of electrical equipment in a specific scenario. The interface provides a first area for setting the reservation time, where users can set the reservation time themselves. It also supports personalized settings, such as selecting the "single" control to indicate that the reservation is a single reservation; selecting the "daily" control to indicate that the reservation is a daily reservation; or selecting the "custom" control to allow users to set the number of times or dates for the reservation.

[0115] The interface diagram shows the selection controls for the scheduled operating conditions, including controls for starting the power battery preheating and controls for starting the air conditioning. Each of these controls has a corresponding electrical device: the power battery preheating system corresponds to the power battery preheating system, and the air conditioning system corresponds to the air conditioning system.

[0116] After the user selects any control, during the subsequent battery charging process, according to the first instruction, under the condition of meeting the preset conditions, the system controls the electrical equipment to disconnect from the battery and / or controls the current conversion device to disconnect from the battery; it controls the current conversion device to connect with the electrical equipment and the external power supply device to connect with the current conversion device to supply power to the electrical equipment, thereby transferring the electrical energy of the external power supply device to the vehicle's electrical equipment so that the electrical equipment can execute the scheduled working condition information.

[0117] In some embodiments, after the control current conversion device is connected to an external power supply device and the control current conversion device is connected to the power-consuming device, the method further includes:

[0118] Fault detection shall be performed on current conversion devices and / or external power supply equipment; fault detection shall include at least a portion of leakage current detection and / or high-voltage interlock detection.

[0119] In the event of a fault at least partially detected, the current conversion device and the electrical equipment are disconnected, and the current conversion device is disconnected from the external power supply.

[0120] Control the connection between the electrical equipment and the battery to power the equipment via the battery.

[0121] In the process of the current conversion device transmitting electrical energy from the external power supply equipment to the electrical equipment, the embodiments of this application perform fault detection on the current conversion device and / or the external power supply equipment. The fault detection includes at least a portion of leakage current detection, high voltage interlock detection, and power grid outage. If at least one of the aforementioned faults is detected in the current conversion device and the external power supply equipment, the current conversion device is controlled to stop transmitting electrical energy from the external power supply equipment to the electrical equipment, thereby ensuring the safety of the user and the electrical equipment.

[0122] In addition, even if the current conversion device and / or external power supply equipment are faulty, the electrical equipment still needs power. In this case, the electrical equipment can be connected to the battery so that the battery supplies power to the electrical equipment.

[0123] In some embodiments, the electrical device further includes a battery management system and a main contactor; the main contactor is connected between the battery and the electrical device; the battery management system is used to control the closing and opening of the main contactor;

[0124] Controlling the connection between the battery and the electrical device includes:

[0125] The battery management system controls the closing of the main contactor to control the connection between the battery and the electrical equipment.

[0126] In the event of any of the above faults, the constant voltage power supply mode will be exited, and the battery manager will be controlled to engage the main contactor to restore the high voltage circuit of the power battery, allowing the battery to continue supplying power to the high voltage electrical equipment.

[0127] In some embodiments, after the control current conversion device is connected to the electrical equipment and the external power supply device is connected to the current conversion device, the method further includes:

[0128] According to the second instruction, the control current conversion device and the electrical equipment are disconnected and / or the control current conversion device is disconnected from the external power supply equipment;

[0129] The second instruction is used to instruct electrical equipment to be turned off.

[0130] After the electrical equipment completes the corresponding operating condition information, the electrical equipment will shut down and send a second target instruction to the vehicle controller. This second target instruction is used to instruct the electrical equipment to shut down, that is, the electrical equipment has been fully charged. In this case, the current conversion device and the electrical equipment can be disconnected and / or the current conversion device can be disconnected from the external power supply equipment, thereby stopping the power supply to the electrical equipment.

[0131] As shown in Figure 3, this application embodiment provides a second flowchart of a charging control method, which can be applied to a scheduled working condition scenario and includes the following steps:

[0132] Step 301: Receive the scheduled operating status information for the electrical equipment;

[0133] Step 302: Generate the first instruction based on the scheduled work status information;

[0134] Step 303: According to the first instruction, under the condition that the preset conditions are met, control the electrical equipment to disconnect from the battery and control the current conversion device to disconnect from the battery; the preset conditions include the battery power reaching the target power, the electrical equipment and the charging gun being connected, the electrical equipment being in the target state, and having the target permission for external power supply equipment.

[0135] Step 304: Connect the control current conversion device to the external power supply equipment and connect the control current conversion device to the electrical equipment to supply power to the electrical equipment;

[0136] Step 305: Control the current conversion device to transfer electrical energy from the external power supply equipment to the electrical device according to a constant target voltage; the target voltage is the smaller of the requested input voltage of the electrical device and the rated output voltage of the external power supply equipment.

[0137] Step 306: According to the second instruction, control the current conversion device and the electrical equipment to disconnect; wherein, the second instruction is used to instruct the current conversion device and the electrical equipment to disconnect.

[0138] The detailed implementation process of steps 301 to 306 above is described in the aforementioned embodiments and will not be repeated here.

[0139] As shown in Figure 4, this embodiment of the application provides a connection diagram between an electrical device and an external power supply device, including an electrical device 410, an external power supply device 420, and a charging gun 430; the electrical device 410 includes a battery 411, a main contactor 412, a power-consuming device 413, and a current conversion device 414; the main contactor is connected between the battery and the power-consuming device; the circuit containing the external power supply device 420 and the charging gun 430 includes switches K1 and K2, which are disposed inside the battery; the internal circuit of the electrical device 410 includes the battery 411, the power-consuming device 413, the current conversion device 414, switches K3, K4, K5, and K6; the current conversion device 414 is electrically connected to the charging pile 430.

[0140] When charging battery 411, K1, K2, K3, K4, K5 and K6 are all closed; the main contactor is closed; the external power supply equipment is connected to the current conversion device; the current conversion device is connected to the battery.

[0141] When powering electrical equipment 413, K3 and K4 are disconnected, while K1, K2, K5, and K6 are all closed; the main contactor disconnects the electrical equipment from the battery, and the current conversion device is disconnected from the battery, thus stopping battery charging; the current conversion device is electrically connected to the electrical equipment at the connection port; the external power supply device is connected to the current conversion device, enabling power supply to the electrical equipment through the external power supply device.

[0142] This application provides a charging circuit, including:

[0143] Battery, main contactor, and current conversion device;

[0144] The main contactor connects the battery to the electrical equipment;

[0145] A connection port for connecting electrical equipment is provided between the current conversion device and the main contactor.

[0146] In the first operating mode, the main contactor is closed; the current conversion device is connected to the external power supply equipment; the current conversion device is connected to the battery.

[0147] In the second operating mode, the main contactor is disconnected, and the current conversion device and battery are disconnected; the current conversion device is electrically connected to the electrical equipment at the connection port; the current conversion device is connected to the external power supply equipment.

[0148] The charging circuit has two operating modes: the first operating mode and the second operating mode.

[0149] In the first working mode, the battery is charged normally. Before the battery reaches the target charge level, the battery can supply power to the device when it needs power. Therefore, the main contactor can be closed, so the battery can supply power to the device. The external power supply device is connected to the current conversion device, and the current conversion device is connected to the battery, so that the external power supply device can supply power to the battery.

[0150] The second working mode occurs in the scheduled working condition scenario. In the second working mode, the main contactor is disconnected, and the current conversion device and battery are disconnected; the current conversion device is electrically connected to the electrical equipment at the connection port; the current conversion device is connected to the external power supply device, so that the electrical equipment is powered by the external power supply device instead of the battery.

[0151] The charging control method provided in this application can be executed by a charging control device. This application uses the example of a charging control device executing the charging control method to illustrate the charging control device provided in this application.

[0152] This application also provides a charging control device for use in electrical equipment.

[0153] As shown in Figure 5, the charging control device includes a first processing module 510 and a second processing module 520.

[0154] The first processing module 510 is used to control the electrical equipment to disconnect from the battery and the current conversion device to disconnect from the battery according to the first instruction and under the condition of meeting the preset conditions.

[0155] The second processing module 520 is used to control the current conversion device to connect with the external power supply equipment and to connect the current conversion device with the power-consuming equipment in order to supply power to the power-consuming equipment.

[0156] The first instruction is used to instruct the electrical equipment to be started.

[0157] When the electrical equipment is a vehicle, the charging control device can be the vehicle control system (VCU), the current conversion device can be the on-board charger (OBC), and the external power supply equipment can be a charging pile; the electrical equipment includes, but is not limited to, battery preheating systems and air conditioning systems.

[0158] According to the charging control device provided in the embodiments of this application, the device directly supplies power to the electrical equipment through an external power supply device, which can avoid the electrical equipment consuming battery power after the preset conditions are met, avoid the battery being frequently charged and discharged, and also satisfy the user's requirement to keep the battery at the target power level when using electrical equipment.

[0159] In addition, compared to powering electrical devices with batteries, directly powering electrical devices with external power supplies can reduce energy conversion and improve energy utilization.

[0160] In addition, the control device disconnects from the battery and / or controls the current conversion device to disconnect from the battery, controls the current conversion device to connect to the device and the external power supply device to connect to the current conversion device, so as to meet the power supply needs of the device while avoiding repeated charging and discharging of the battery, reducing the need for frequent push notifications of charging and discharging information to users, and avoiding excessive disturbance to users.

[0161] In some embodiments, the preset conditions include the battery reaching the target charge level, the electrical device and the charging gun being connected, the electrical device being in the target state, and having the target permission to use an external power supply device.

[0162] In some embodiments, the charging control device further includes:

[0163] The fourth processing module is used for:

[0164] The control current conversion device transmits electrical energy from the external power supply equipment to the electrical equipment according to a constant target voltage;

[0165] The target voltage is the smaller of the requested input voltage of the electrical equipment and the rated output voltage of the external power supply equipment.

[0166] In some embodiments, the electrical equipment includes a first electrical equipment and a second electrical equipment;

[0167] The fourth processing module is specifically used for:

[0168] The control current conversion device transmits electrical energy from the external power supply equipment to the first electrical device according to a constant first target voltage; the first target voltage is the smaller of the requested input voltage of the first electrical device and the rated output voltage of the external power supply equipment.

[0169] If it is determined that the current conversion device and the first electrical device are disconnected, control the current conversion device to connect to the second electrical device;

[0170] The control current conversion device transmits electrical energy from the external power supply equipment to the second electrical device according to a constant second target voltage; the second target voltage is the smaller of the requested input voltage of the second electrical device and the rated output voltage of the external power supply equipment.

[0171] In some embodiments, the electrical equipment includes a first electrical equipment and a second electrical equipment;

[0172] The fourth processing module is specifically used to: control the current conversion device to simultaneously transmit electrical energy from the external power supply device to the first and second electrical devices according to a constant third target voltage, provided that the rated output power of the external power supply device is not less than the sum of the requested input power of the first electrical device and the requested input power of the second electrical device.

[0173] The third target voltage is the smaller of the rated output voltage of the external power supply equipment, the requested input voltage of the first power user equipment, and the requested voltage of the second power user equipment.

[0174] In some embodiments, the charging control device includes:

[0175] The fifth processing module is used for:

[0176] Receive scheduled operating status information for electrical equipment;

[0177] Generate the first instruction based on the scheduled work status information;

[0178] The sixth processing module is used to control the start-up of electrical equipment and execute scheduled operating condition information.

[0179] In some embodiments, the charging control further includes:

[0180] The seventh processing module is used for:

[0181] Fault detection shall be performed on current conversion devices and / or external power supply equipment; fault detection shall include at least a portion of leakage current detection and / or high-voltage interlock detection.

[0182] In the event of a fault at least partially detected, the current conversion device and the electrical equipment are disconnected, and the current conversion device is disconnected from the external power supply.

[0183] Control the connection between the electrical equipment and the battery to power the equipment via the battery.

[0184] In some embodiments, the charging control device further includes:

[0185] According to the second instruction, the control current conversion device and the electrical equipment are disconnected;

[0186] The second instruction is used to instruct the disconnection of the current conversion device and the electrical equipment.

[0187] The charging control device in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television set (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific device.

[0188] The charging control device in this application embodiment can be a device with an operating system. This operating system can be a Microsoft (Windows) operating system, an Android operating system, an iOS operating system, or other possible operating systems; this application embodiment does not specifically limit the specific operating system.

[0189] The charging control device provided in this application embodiment can realize the various processes implemented in the method embodiments of Figures 1 to 4. To avoid repetition, it will not be described again here.

[0190] In some embodiments, as shown in FIG6, this application embodiment also provides an electronic device 600, including a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601. When the program is executed by the processor 601, it implements the various processes of the above-described charging control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0191] It should be noted that the electronic devices in the embodiments of this application include the aforementioned mobile electronic devices and non-mobile electronic devices.

[0192] This application provides an electrical device, and the aforementioned charging control method is applied to the electrical device. The detailed implementation process of the charging control method is described in the foregoing embodiments and will not be repeated here.

[0193] This application provides an electrical device, which includes the aforementioned charging control device. The detailed implementation process is described in the foregoing embodiments and will not be repeated here.

[0194] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described charging control method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0195] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0196] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described charging control method.

[0197] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0198] This application embodiment also provides a vehicle, which includes a vehicle controller, a battery management system, and an on-board charger;

[0199] The vehicle controller is used for:

[0200] According to the first instruction, under the condition that the preset conditions are met, the battery management system controls the electrical equipment to disconnect from the battery, and the battery management system controls the on-board charger to disconnect from the battery.

[0201] Control the connection between the vehicle charger and the charging pile, and control the connection between the vehicle charger and the electrical equipment to supply power to the electrical equipment;

[0202] The first instruction is used to instruct the electrical equipment to be started.

[0203] An on-board charger (OBC) is a device in an electric vehicle used to convert power from an external power source (such as a charging station or household power) into direct current suitable for charging the battery. It is responsible for adjusting the current and voltage to ensure the battery is charged safely and efficiently. On-board chargers are typically built into the vehicle body so they can be connected to a power source for charging when the vehicle is parked.

[0204] The Battery Management System (BMS) can calculate and estimate the minimum battery temperature at the time of vehicle use based on the user-defined scheduled usage time, the current minimum temperature of the power battery pack, the average ambient temperature, and the battery pack's static cooling function (which varies depending on the type and capacity of the battery pack), thereby determining whether to activate battery preheating.

[0205] The battery management system can disconnect the electrical equipment from the battery by controlling the main contactor to disconnect.

[0206] The Vehicle Control Unit (VCU) is a core electronic control unit in an electric or hybrid vehicle, responsible for coordinating and managing various vehicle functions. The main functions of the VCU include: battery management (Battery Management System, BMS), thermal management (such as battery preheating, passenger compartment heating, etc.), vehicle status monitoring, and powertrain control.

[0207] The detailed implementation of the above process can be found in the foregoing embodiments, and will not be repeated here.

[0208] In some embodiments, the preset conditions include the battery level reaching the target level, the vehicle and the charging gun being connected, the vehicle being in the target state, and having the target permissions for the charging pile.

[0209] The charging control method provided in this application embodiment can be applied to a vehicle. The vehicle includes a vehicle controller, a battery management system, and an on-board charger. The battery management system is used to manage the connection and disconnection between the battery and the electrical equipment. The vehicle controller or the battery management system is used to execute the aforementioned charging control method. The detailed implementation process of the charging control method is described in the aforementioned embodiment and will not be repeated here.

[0210] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described charging control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0211] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0212] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0213] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0214] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0215] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0216] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A charging control method, wherein, Applied to electrical equipment, including: According to the first instruction, under the condition that the preset conditions are met, the electrical equipment is disconnected from the battery, and the current conversion device is disconnected from the battery. The current conversion device is connected to an external power supply device, and the current conversion device is connected to the electrical equipment to supply power to the electrical equipment. The first instruction is used to instruct the electrical equipment to be started.

2. The charging control method according to claim 1, wherein, The preset conditions include the battery reaching the target charge level, the electrical device and the charging gun being connected, the electrical device being in the target state, and having the target permissions for the external power supply device.

3. The charging control method according to any one of claims 1-2, wherein, After controlling the current conversion device to connect with the external power supply equipment and controlling the current conversion device to connect with the electrical equipment, the method further includes: The current conversion device is controlled to transmit electrical energy from the external power supply equipment to the electrical device according to a constant target voltage. The target voltage is the smaller of the requested input voltage of the electrical equipment and the rated output voltage of the external power supply equipment.

4. The charging control method according to claim 3, wherein, The electrical equipment includes a first electrical equipment and a second electrical equipment; The control of the current conversion device to transmit electrical energy from the external power supply equipment to the electrical device according to a constant target voltage includes: The current conversion device is controlled to transmit electrical energy from the external power supply device to the first electrical device according to a constant first target voltage; the first target voltage is the smaller of the requested input voltage of the first electrical device and the rated output voltage of the external power supply device. If it is determined that the current conversion device and the first electrical device are disconnected, control the current conversion device and the second electrical device to connect. The current conversion device is controlled to transmit electrical energy from the external power supply device to the second electrical device according to a constant second target voltage; the second target voltage is the smaller of the requested input voltage of the second electrical device and the rated output voltage of the external power supply device.

5. The charging control method according to claim 3, wherein, The electrical equipment includes a first electrical equipment and a second electrical equipment; The method for controlling the current conversion device to transmit electrical energy from the external power supply equipment to the electrical device according to a constant target voltage also includes: When the rated output power of the external power supply device is not less than the sum of the requested input power of the first electrical device and the requested input power of the second electrical device, the current conversion device is controlled to transmit the electrical energy of the external power supply device to both the first electrical device and the second electrical device simultaneously according to a constant third target voltage. The third target voltage is the smaller of the rated output voltage of the external power supply equipment and the sum of the requested input voltage of the first power supply equipment and the requested voltage of the second power supply equipment.

6. The charging control method according to any one of claims 1-5, wherein, Before the first instruction is followed, and a preset condition is met, the method further includes: Receive scheduled operating status information for electrical equipment; The first instruction is generated based on the scheduled work status information; After controlling the current conversion device to connect with the external power supply equipment and controlling the current conversion device to connect with the electrical equipment, the method further includes: Control the electrical equipment to start and execute the scheduled operating condition information.

7. The charging control method according to any one of claims 1-6, wherein, After controlling the current conversion device to connect with the external power supply equipment and controlling the current conversion device to connect with the electrical equipment, the method further includes: Fault detection is performed on the current conversion device and / or the external power supply equipment; the fault detection includes at least a portion of leakage current detection and / or high-voltage interlock detection. In the event of a partial fault detected, the current conversion device is controlled to disconnect from the electrical equipment and the external power supply device. Control the connection between the electrical device and the battery so that the electrical device is powered by the battery.

8. The charging control method according to claim 7, wherein, The electrical equipment also includes a battery management system and a main contactor; the main contactor is connected between the battery and the electrical equipment; the battery management system is used to control the closing and opening of the main contactor; The control of the connection between the battery and the electrical device includes: The battery management system controls the closing of the main contactor to control the connection between the battery and the electrical equipment.

9. The charging control method according to any one of claims 1-8, wherein, After controlling the current conversion device to connect with the external power supply equipment and controlling the current conversion device to connect with the electrical equipment, the method further includes: According to the second instruction, the current conversion device and the electrical equipment are disconnected. The second instruction is used to instruct the current conversion device and the electrical equipment to be disconnected.

10. A charging circuit, wherein, include: Battery, main contactor, and current conversion device; The main contactor is connected between the battery and the electrical equipment; A connection port for connecting electrical equipment is provided between the current conversion device and the main contactor. In the first operating mode, the main contactor is closed; The current conversion device is connected to an external power supply device; the current conversion device is connected to the battery. In the second operating mode, the main contactor is disconnected, and the current conversion device and the battery are disconnected; The current conversion device is electrically connected to the electrical equipment at the connection port; the current conversion device is also connected to the external power supply equipment.

11. A charging control device, wherein, Applied to electrical equipment, including: The first processing module is used to control the electrical equipment to disconnect from the battery and the current conversion device to disconnect from the battery, according to the first instruction and under the condition of meeting the preset conditions. The second processing module is used to control the current conversion device to connect with the external power supply equipment and to connect the current conversion device with the electrical equipment to supply power to the electrical equipment. The first instruction is used to instruct the electrical equipment to be started.

12. An electrical appliance, wherein, The charging control method according to any one of claims 1-9 is applied to the electrical device.

13. An electrical appliance, wherein, The electrical equipment includes the charging control device as described in claim 11.

14. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein, When the computer program is executed by the processor, it implements the charging control method as described in any one of claims 1-9.

15. A computer program product comprising a computer program, wherein, When the computer program is executed by the processor, it implements the charging control method as described in any one of claims 1-9.

16. A vehicle, wherein, The vehicle includes a vehicle controller, a battery management system, and an on-board charger; The vehicle controller is used for: According to the first instruction, under the condition that the preset conditions are met, the battery management system controls the electrical equipment to disconnect from the battery, and the battery management system controls the on-board charger to disconnect from the battery. The system controls the on-board charger to connect to the charging pile and the on-board charger to connect to the electrical equipment to supply power to the electrical equipment. The first instruction is used to instruct the electrical equipment to be started.

17. The vehicle according to claim 16, wherein, The preset conditions include the battery reaching the target charge level, the vehicle and the charging gun being connected, the vehicle being in the target state, and having the target access to the charging pile.

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