Discharge control method, device, system, apparatus, and vehicle

Abstract

The application relates to a discharge control method, device, system, equipment and vehicle, and relates to the technical field of new energy vehicles. The method comprises the following steps: acquiring the running state of the vehicle and the discharge condition of the on-board charger; and performing discharge control on the on-board charger based on the running state and the discharge condition. Therefore, the on-board charger can be controlled to discharge, so that the battery is prevented from feeding power.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, in particular to the field of battery discharge control, and specifically to a discharge control method, device, system, equipment and vehicle. BACKGROUND

[0002] To cope with environmental pollution and the tense situation of oil energy supply, new energy vehicles have become the mainstream of the automobile industry, among which electric vehicles are the core force in the field of new energy vehicles. With new energy electric vehicles increasingly becoming the key direction of future automobile industry development, vehicle-mounted electronic devices are rapidly developing towards miniaturization, integration and high power density. At present, integrated vehicle-mounted chargers with multiple functions have successfully realized mass production.

[0003] However, when discharging inside and outside the vehicle at the same time, the battery (small battery) may be fed due to insufficient DCDC power.

[0004] The three-port charger with inverter function mentioned in related technology CN107623365A can integrate independent chargers and high-power DCDC modules, and also has inverter function, sharing power switches, control circuits and magnetic cores, thereby flexibly realizing control and switching of charger mode, self-power mode and inverter mode. However, the motor may cause the battery to be fed due to insufficient power of the DC-to-DC converter (DCDC).

[0005] Related technology CN113410898A uses back-and-forth switching of dual auxiliary sources, so that the first auxiliary source and the second auxiliary source do not appear full load or small load, thereby reducing the overall loss of the converter and improving conversion efficiency, but related technology 2 cannot solve the problem of battery feeding.

[0006] Therefore, it is necessary to explore an effective way to avoid the problem of battery feeding due to insufficient DCDC power. SUMMARY

[0007] The present application provides a discharge control method, device, system, equipment and vehicle to at least solve the technical problem of battery feeding due to insufficient DCDC power in related technology. The technical solutions of the present application are as follows:

[0008] According to the first aspect of the present application, a discharge control method is provided, applied to a vehicle, the method comprising: obtaining the running state of the vehicle and the discharge condition of the vehicle-mounted charger; based on the running state and the discharge condition, performing discharge control on the vehicle-mounted charger.

[0009] According to the above technical means, the discharge control can be performed according to the running state of the vehicle and the discharge condition of the on-board charger, so as to intelligently allocate electric energy, ensure that the in-vehicle and out-of-vehicle devices obtain sufficient power supply when needed, and avoid battery feeding caused by excessive discharge or deep discharge of the battery, thereby prolonging the service life of the battery.

[0010] In a possible implementation, the running state includes a stationary state, and in a case where the running state is the stationary state, the discharge control on the on-board charger based on the running state and the discharge condition includes: in a case where the discharge condition is that the in-vehicle discharge function is turned on and the out-of-vehicle discharge function is turned on, determining a total discharge power of the on-board charger; and in a case where the total discharge power is greater than a preset threshold, performing the discharge control on the on-board charger.

[0011] According to the above technical means, in order to avoid the total output power of the on-board charger exceeding the design limit when the on-board charger supplies power to the in-vehicle and out-of-vehicle devices at the same time, causing an overload problem, the discharge control can be performed on the on-board charger in a case where the total discharge power is greater than a preset threshold, so as to ensure that the on-board charger operates within a safe power range, thereby avoiding battery feeding and prolonging the service life of the battery.

[0012] In a possible implementation, in a case where the total discharge power is greater than a preset threshold, the discharge control on the on-board charger includes: turning off the out-of-vehicle discharge function of the on-board charger; and in a case where the total discharge power of the on-board charger after the out-of-vehicle discharge function is turned off is greater than the preset threshold, turning off the in-vehicle discharge function of the on-board charger.

[0013] According to the above technical means, in a case where the total discharge power exceeds the design limit of the on-board charger, timely turning off the out-of-vehicle or in-vehicle discharge function can prevent the overload current from damaging the on-board charger and the battery system, and by controlling the discharge power, the on-board charger and the battery system can be prevented from being in a high-load state for a long time, thereby prolonging the service life of the on-board charger and the battery system.

[0014] In a possible implementation, the running state includes a running state, and in a case where the running state is the running state, the discharge control on the on-board charger based on the running state and the discharge condition further includes: in a case where the discharge condition is that the on-board device is supplied with power and the in-vehicle discharge function is turned on, determining a maximum output power of the on-board charger at a current time and a total electric energy demand of the vehicle; and in a case where the total electric energy demand is greater than the maximum output power, performing the control on the in-vehicle discharge.

[0015] According to the above technical means, since the maximum output power of the vehicle-mounted charger can change with the power of the power battery when the vehicle is running, that is, the maximum output power of the vehicle-mounted charger is larger when the power of the power battery is higher, and the maximum output power of the vehicle-mounted charger is smaller when the power of the power battery is lower. In addition, when the vehicle is running, the power demand of the vehicle-mounted device can increase due to the opening of part of the equipment (for example, the vehicle headlamp and seat heating). Therefore, in order to avoid the problem of battery feeding during the running of the vehicle and further causing power interruption, the application can control the discharge of the vehicle-mounted charger.

[0016] In a possible implementation, in the case that the total power demand is greater than the maximum output power, the discharge in the vehicle is controlled, including: in the case that the total power demand is greater than the maximum output power, reducing the power of the discharge in the vehicle.

[0017] According to the above technical means, the application can reduce the power of the discharge in the vehicle when the total power demand exceeds the maximum output power of the vehicle-mounted power supply system, avoid continuing to supply power to the vehicle-mounted device at a high power, which can cause the power supply system to be overloaded and further cause the problem of battery feeding.

[0018] In a possible implementation, after reducing the power of the discharge in the vehicle, the method further includes: if the total power demand of the vehicle is greater than the maximum output power after a first preset time, the discharge function of the vehicle-mounted charger in the vehicle is turned off.

[0019] According to the above technical means, the application can turn off the discharge function in the vehicle when the total power demand is continuously higher than the maximum output power, so as to avoid the overload of the power supply system of the vehicle and the problem of battery feeding.

[0020] In a possible implementation, after turning off the discharge function of the vehicle-mounted charger in the vehicle, the method further includes: if the total power demand of the vehicle is less than or equal to the maximum output power after a second preset time, the discharge function of the vehicle-mounted charger in the vehicle is turned on.

[0021] According to the above technical means, the application can turn on the discharge function in the vehicle again when the total power demand of the vehicle is reduced to below the maximum output power, so as to ensure that the power is more fully utilized, avoid energy waste, and improve the user experience.

[0022] In a possible implementation, in the case that it is determined that the external discharge gun is connected, the validity of the CP signal of the external discharge gun is detected; in the case that the CP signal is valid, the external discharge function of the vehicle-mounted charger is turned off; and in the case that the CP signal is invalid, the external discharge function of the vehicle-mounted charger is turned on.

[0023] According to a second aspect provided in the present application, a discharge control device is provided, comprising: an acquisition unit and a control unit; the acquisition unit is configured to acquire an operating state of a vehicle and a discharge condition of an on-board charger; and the control unit is configured to perform discharge control on the on-board charger based on the operating state and the discharge condition.

[0024] In a possible implementation, the control unit is specifically configured to: determine a total discharge power of the on-board charger when the discharge condition is that the on-board charger is in an on-vehicle discharge mode and an off-vehicle discharge mode; and perform discharge control on the on-board charger when the total discharge power is greater than a preset threshold.

[0025] In a possible implementation, the control unit is specifically configured to: turn off the off-vehicle discharge function of the on-board charger; and turn off the on-vehicle discharge function of the on-board charger when the total discharge power of the on-board charger after turning off the off-vehicle discharge function is greater than the preset threshold.

[0026] In a possible implementation, the control unit is specifically configured to: determine a maximum output power of the on-board charger at a current time and a total electrical energy demand of the vehicle when the discharge condition is that the on-board charger is in a power supply mode for an on-board device and the on-vehicle discharge function is turned on; and perform control on the on-vehicle discharge when the total electrical energy demand is greater than the maximum output power.

[0027] In a possible implementation, the control unit is specifically configured to: reduce the power of the on-vehicle discharge when the total electrical energy demand is greater than the maximum output power.

[0028] In a possible implementation, the control unit is specifically configured to: turn off the on-vehicle discharge function of the on-board charger if the total electrical energy demand of the vehicle is greater than the maximum output power after a first preset time period.

[0029] In a possible implementation, the control unit is specifically configured to: turn on the on-vehicle discharge function of the on-board charger if the total electrical energy demand of the vehicle is less than or equal to the maximum output power after a second preset time period.

[0030] In a possible implementation, the device further comprises a determination unit configured to detect validity of a CP signal of an external discharge gun when it is determined that the external discharge gun is connected; and the control unit is further configured to turn off the off-vehicle discharge function of the on-board charger when the CP signal is valid; and the control unit is further configured to turn on the off-vehicle discharge function of the on-board charger when the CP signal is invalid.

[0031] According to a third aspect provided in the present application, a discharge control system is provided, comprising: a sensor and a discharge control device; the sensor is configured to collect the running state of the vehicle and the discharge condition of the on-board charger; the discharge control device is configured to obtain the running state and the discharge condition collected by the sensor; and the discharge control device is further configured to control the discharge of the on-board charger based on the running state and the discharge condition.

[0032] According to a fourth aspect provided in the present application, a vehicle is provided, comprising the discharge control system.

[0033] According to a fifth aspect provided in the present application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the method of the first aspect and any possible implementation thereof.

[0034] According to a sixth aspect provided in the present application, a computer-readable storage medium is provided, when the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device can execute the method of the first aspect and any possible implementation thereof.

[0035] According to a seventh aspect provided in the present application, a computer program product is provided, the computer program product comprises computer instructions, when the computer instructions are executed on the electronic device, the electronic device executes the method of the first aspect and any possible implementation thereof.

[0036] Therefore, the above technical features of the present application have the following beneficial effects:

[0037] (1) The discharge can be controlled according to the running state of the vehicle and the discharge condition of the on-board charger, so as to intelligently allocate electric energy, ensure that the in-vehicle and out-of-vehicle devices obtain sufficient power supply when needed, and avoid over-discharge or deep-discharge of the battery to cause battery feeding and prolong the service life of the battery.

[0038] (2) In order to avoid the total output power of the on-board charger exceeding the design limit when the on-board charger supplies power to the in-vehicle and out-of-vehicle devices at the same time, causing an overload problem, the present application can control the discharge of the on-board charger when the total discharge power is greater than a preset threshold, so as to ensure that the on-board charger operates within a safe power range, thereby avoiding battery feeding and prolonging the service life of the battery.

[0039] (3) When the total discharge power exceeds the design limit of the on-board charger, timely closing the out-of-vehicle or in-vehicle discharge function can prevent the overload current from damaging the on-board charger and the battery system, and by controlling the discharge power, the on-board charger and the battery system can be prevented from being in a high-load state for a long time, thereby prolonging the service life of the on-board charger and the battery system.

[0040] (4) Since the maximum output power of the on-board charger can vary with the state of charge of the traction battery when the vehicle is running, i.e. the maximum output power of the on-board charger is larger when the state of charge of the traction battery is higher, and the maximum output power of the on-board charger is smaller when the state of charge of the traction battery is lower. In addition, when the vehicle is running, the power demand of the on-board devices can increase due to the opening of some devices (e.g. vehicle headlights, seat heating). Therefore, in order to avoid the problem of battery feeding during the running of the vehicle, thereby causing power interruption, the application can control the discharge of the on-board charger.

[0041] (5) When the total power demand exceeds the maximum output power of the on-board power supply system, the power of the on-board discharge can be reduced to avoid continuing to supply power to the on-board devices at a high power, which can cause the power supply system to be overloaded, thereby causing the problem of battery feeding.

[0042] (6) When the total power demand is continuously higher than the maximum output power, the on-board discharge function can be turned off to avoid the problem of overloading of the power supply system of the vehicle and the problem of battery feeding.

[0043] (7) When the total power demand of the vehicle is reduced to below the maximum output power, the on-board discharge function can be turned on again to ensure that the power is more fully utilized, avoid energy waste, and improve user experience.

[0044] It should be noted that the technical effects brought by any one of the implementation manners of the second aspect to the seventh aspect can be referred to the technical effects brought by the corresponding implementation manners of the first aspect, which will not be repeated here.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which are incorporated into and form part of the specification, illustrate an embodiment consistent with the present application and, together with the specification, serve to explain the principles of the application, and do not constitute an improper limitation of the application.

[0047] Figure 1 is a structural schematic diagram of a vehicle according to an exemplary embodiment;

[0048] Figure 2 is a flowchart of a discharge control method according to an exemplary embodiment;

[0049] Figure 3 is a control principle schematic diagram of off-board inversion when the top is according to an exemplary embodiment;

[0050] Figure 4is a structural schematic diagram of still another vehicle according to an exemplary embodiment;

[0051] Figure 5 is a control schematic diagram when an off-vehicle inverter is reversed against a top according to an exemplary embodiment;

[0052] Figure 6 is a discharge control principle diagram according to an exemplary embodiment;

[0053] Figure 7 is still another discharge control principle diagram according to an exemplary embodiment;

[0054] Figure 8 is a schematic diagram of a discharge control flow according to an exemplary embodiment;

[0055] Figure 9 is a block diagram of a discharge control device according to an exemplary embodiment;

[0056] Figure 10 is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0057] In order to make the ordinary person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0058] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0059] In the embodiments of the present application, the words "exemplary", "such as", or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary", "such as", or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary", "such as", or "for example" is intended to present relevant concepts in a concrete manner.

[0060] First, the related art involved in the present application is explained and described in order to facilitate understanding by those skilled in the art.

[0061] To effectively address the increasingly severe environmental pollution problems and the tense situation of oil energy supply, new energy vehicles have gradually occupied the dominant position in the automobile manufacturing industry and have shown great development potential in the entire transportation field. Among them, electric vehicles have become the core force in the field of new energy vehicles due to their zero emissions, low noise and other advantages. With the continuous progress of technology and the continuous promotion of policy, new energy electric vehicles are increasingly becoming the key direction and inevitable trend of future automobile industry development.

[0062] Under this background, vehicle-mounted devices have also ushered in unprecedented development opportunities, and they are rapidly developing towards smaller, more integrated and higher power density. This development trend not only helps to improve the overall performance and driving experience of vehicles, but also to a certain extent, reduces production costs and improves market competitiveness.

[0063] Currently, with the continuous breakthroughs in technology and the maturation of the market, integrated vehicle-mounted chargers that integrate multiple functions have successfully achieved mass production and are widely used in various new energy electric vehicles. This integrated vehicle-mounted charger not only has efficient and convenient charging functions, but also provides stable power supply for vehicles to ensure normal operation under various working conditions.

[0064] However, in actual use, new energy electric vehicles also face some technical challenges. Especially when discharging inside and outside the vehicle at the same time, and the inverter function in the vehicle is enabled, the battery (usually referred to as a small battery) may be fed due to insufficient power of the DCDC.

[0065] The three-port charger with inverter function mentioned in Related Technology 1 can integrate independent chargers and high-power DCDC modules, and also has inverter function, sharing power switches, control circuits and magnetic cores, thereby flexibly realizing control and switching of charger mode, self-power mode and inverter mode. However, this motor may cause the battery to be fed due to insufficient power of the DCDC.

[0066] Related Technology 2 uses a single dual auxiliary source to switch back and forth, so the first auxiliary source and the second auxiliary source will not be in full load or small load conditions, thereby reducing the overall loss of the converter and improving conversion efficiency, but Related Technology 2 cannot solve the battery feeding problem.

[0067] As described in the background, to solve the problem of insufficient power of the DCDC in the related art, resulting in the problem of battery feeding, the application provides a discharge control method, which can obtain the running state of the vehicle and the discharge condition of the on-board charger, and based on the running state and the discharge condition, the on-board charger is controlled to discharge, avoiding the problem of insufficient power of the DCDC, thereby avoiding the problem of battery feeding.

[0068] The technical solutions in the embodiments of the application will be described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments.

[0069] The discharge control method provided in the embodiments of the application can be applied in a vehicle. The vehicle can also be referred to as a vehicle, a mobile carrier, an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a fuel cell vehicle (FCV), an autonomous vehicle, an intelligent and connected vehicle (ICV), a driverless vehicle, etc.

[0070] In the embodiments of the application, the vehicle can be a car, a sport utility vehicle (SUV), a truck, an electric vehicle, a motorcycle, a tricycle, a special vehicle (such as an ambulance, a fire truck, a police car, etc.), a driverless taxi, an intelligent and connected bus, an autonomous logistics vehicle, an electric truck, etc. In addition, the method is also applicable to various special vehicles, such as agricultural vehicles, mining vehicles, forestry vehicles, airport vehicles, port vehicles, etc. The application does not make specific limitations in this regard.

[0071] Figure 1 A structural schematic diagram of the vehicle 100 is shown.

[0072] The vehicle 100 can include an on-board charger 101, an on-board device 102, and a discharge control system 103.

[0073] The structure shown in the embodiments of the application does not constitute a limitation on the vehicle 100. More or fewer components than shown in the figure can be included, or some components can be combined, or some components can be split, or different component arrangements. The components shown in the figure can be implemented in hardware, software, or a combination of software and hardware.

[0074] The on-board charger 101 is an important component of the vehicle 100, and its main function is to convert alternating current power into direct current power, charge the power battery, and supply power to other electrical appliances through the output port. The on-board charger can include input port, control unit, power unit, low-voltage auxiliary unit and output port and other components. The input port can be used to connect external alternating current power, such as household 220V power grid. The control unit can be responsible for sampling the output current and voltage. The power unit can include input rectification, inverter circuit and output rectification part, which converts the input alternating current into direct current suitable for the power battery. The output port can be directly connected to the slow charging interface of the power battery pack.

[0075] In one possible implementation, the on-board charger 101 can be a bidirectional on-board charger that can charge the power battery and supply power to other electrical appliances through the output port.

[0076] The on-board equipment 102 includes but is not limited to motor controller, motor, reducer, battery management system, vehicle controller, vehicle headlamp, central control equipment and the like. These devices work together to achieve the driving, control, monitoring and protection functions of the vehicle 100. The on-board equipment 102 can be connected with the on-board charger 101. The on-board charger 101 can supply power to the on-board equipment 102.

[0077] The discharge control system 103 can be in communication connection with the on-board charger 101 to control the discharge behavior of the on-board charger 101 and ensure the safe and efficient use of the battery.

[0078] In one possible implementation, the discharge control system 103 can be a discharge control device deployed in the inverter controller of the on-board charger 101. The discharge control system 103 can include sensors and a discharge control device.

[0079] The sensors can be used to collect the running state of the vehicle and the discharge condition of the on-board charger. The discharge control device can be used to obtain the running state and the discharge condition collected by the sensors. The discharge control device can also be used to control the discharge of the on-board charger based on the running state and the discharge condition.

[0080] For ease of understanding, the discharge control method provided by the present application is specifically introduced as follows in combination with the drawings.

[0081] Figure 2 is a flow chart of a discharge control method according to an exemplary embodiment, as shown in Figure 2 The discharge control method includes the following steps: S201-S202.

[0082] S201. Obtain the vehicle's operating status and the on-board charger's discharge status.

[0083] The vehicle's operating status includes both stationary and moving states. The on-board charger's discharge status includes the activation of on-board equipment power supply and / or the activation of in-vehicle discharge function and / or the activation of external discharge function.

[0084] Specifically, the discharge control device can acquire the vehicle's current speed. Based on this speed, it can determine the vehicle's operating state: when the speed is zero, it determines the vehicle is stationary; when the speed is greater than zero, it determines the vehicle is in motion. The device can also determine whether in-vehicle and external discharge functions are activated, and whether onboard equipment requires power, to determine the onboard charger's discharge status.

[0085] In one possible implementation, such as Figure 3 As shown, when the vehicle is stationary, the discharge control device can detect the validity of the CP signal of the external discharge gun when the external discharge gun is inserted, i.e., when the vehicle is connected to the external discharge gun.

[0086] Understandably, when a valid CP value is detected, the vehicle may be charging. Continuing to discharge at this time could damage the bidirectional on-board charger. Therefore, when the CP signal is valid, the discharge control device can disable the on-board charger's external discharge function. Conversely, when the CP signal is invalid, the discharge control device can enable the on-board charger's external discharge function.

[0087] Specifically, when a valid CP signal is detected, the discharge control device can control the external discharge socket to shut off before the external AC power enters, that is, to turn off the external discharge function of the on-board charger, and at the same time control the on-board charger to enter standby mode to protect the on-board charger from damage.

[0088] S202. Based on the operating status and discharge conditions, perform discharge control on the on-board charger.

[0089] In one possible implementation, when the vehicle is stationary and both in-vehicle and external discharge functions are activated, the discharge control device can determine the total discharge power of the on-board charger. If the total discharge power exceeds a preset threshold, the discharge control device can then control the discharge of the on-board charger.

[0090] Optionally, the preset threshold can be determined based on the actual conditions of the on-board charger. For example, the preset threshold could be 6.6 kilowatt hours (kWh) or 5.5 kWh. Further details are omitted here.

[0091] Specifically, in the case that the running state is the static state, the discharging condition is that the in-vehicle discharging function is turned on and the off-vehicle discharging function is turned on, the discharging control device can measure the output ports of the on-board charger through a measuring instrument, obtain the power output by the multiple output ports, and determine the sum of the power output by the multiple output ports as the total discharging power. The discharging control device can compare the total discharging power with a preset threshold, and in the case that the total discharging power is greater than the preset threshold, control the discharging of the on-board charger, i.e., turn off the off-vehicle discharging function of the on-board charger. The discharging control device can determine the total discharging power after the on-board charger turns off the off-vehicle discharging function, and in the case that the total discharging power after the on-board charger turns off the off-vehicle discharging function is greater than the preset threshold, turn off the in-vehicle discharging function of the on-board charger.

[0092] In some embodiments, the discharging control device controls the discharging of the on-board charger in the case that the total discharging power is greater than the preset threshold, and can further include limiting the off-vehicle discharging power and the in-vehicle discharging power of the on-board charger, and limiting the total discharging power within the preset threshold.

[0093] It should be noted that when the on-board charger supplies power to both the in-vehicle equipment and the off-vehicle equipment at the same time, the total output power thereof can exceed the design limit, resulting in overload, and long-term overload operation can accelerate the on-board charger and the battery feeder, and shorten the service life thereof. Therefore, the present application can control the discharging of the on-board charger in the case that the total discharging power is greater than the preset threshold, so as to ensure that the on-board charger operates within a safe power range and prolong the service life thereof.

[0094] In another possible implementation manner, in the case that the running state is the driving state, the discharging condition is that the on-board equipment is powered, and the in-vehicle discharging function is turned on, the discharging control device can determine the maximum output power of the on-board charger at the current time and the total electrical energy demand of the vehicle. The discharging control device can control the in-vehicle discharging in the case that the total electrical energy demand is greater than the maximum output power.

[0095] Specifically, the discharge control device can obtain a real-time DCDC capability curve of the on-board charger, and obtain a discharge demand in the vehicle and a power supply demand of the on-board equipment. The discharge control device can determine a maximum output power of the on-board charger at the current time based on the real-time DCDC capability curve, and determine a total power demand of the vehicle based on the discharge demand in the vehicle and the power supply demand of the on-board equipment. The discharge control device can control the discharge in the vehicle under the condition that the total power demand is greater than the maximum output power. Specifically, the discharge control device can reduce the power of the discharge in the vehicle, and after reducing the power of the discharge in the vehicle, if the total power demand of the vehicle is greater than the maximum output power after a first preset time period, the discharge function of the on-board charger in the vehicle is turned off. After the discharge function of the on-board charger in the vehicle is turned off, if the total power demand of the vehicle is less than or equal to the maximum output power after a second preset time period, the discharge function of the on-board charger in the vehicle is turned on.

[0096] Optionally, the first preset time period can be set according to actual needs. For example, the first preset time period can be one minute, or two minutes. The present application does not make specific limitations on this.

[0097] Optionally, the second preset time period can be set according to actual needs. For example, the second preset time period can be five minutes, or ten minutes. The present application does not make specific limitations on this.

[0098] In some embodiments, the discharge control device can reduce the power of the discharge in the vehicle, and detect the total power demand and the maximum output power for multiple times within a preset time period after reducing the power of the discharge in the vehicle. If the total power demand is greater than the maximum output power in the multiple detection results, the discharge function of the on-board charger in the vehicle is turned off. After the discharge function of the on-board charger in the vehicle is turned off, if the total power demand of the vehicle is less than or equal to the maximum output power after a second preset time period, the discharge function of the on-board charger in the vehicle is turned on.

[0099] It should be noted that when the vehicle is running, the maximum output power of the on-board charger can change with the change of the power of the power battery, that is, when the power of the power battery is high, the maximum output power of the on-board charger is large, and when the power of the power battery is low, the maximum output power of the on-board charger is small.

[0100] In addition, when the vehicle is running, the power demand of the on-board equipment can increase due to the opening of part of the equipment (for example, the vehicle headlamp and seat heating). Therefore, in order to avoid the problem of battery power supply during the running of the vehicle, thereby causing power interruption, the present application can control the discharge of the on-board charger.

[0101] Based on the above Figure 2The technical scheme in the application can intelligently allocate electric energy according to the running state of the vehicle and the discharging condition of the on-board charger, so as to ensure that the in-vehicle and out-of-vehicle devices obtain sufficient power supply when needed, avoid battery over-discharge or deep-discharge induced battery feeding, and prolong the service life of the battery.

[0102] In some embodiments, as shown in Figure 4 Another structural schematic diagram of a vehicle provided by the application is shown in

[0103] The vehicle can include a discharging control device, an on-board charger, an out-of-vehicle discharging socket, an in-vehicle discharging socket, a vehicle controller, and a battery.

[0104] The discharging control device can be communicatively connected between the out-of-vehicle discharging socket and the in-vehicle discharging socket. The discharging control device can control the opening and closing of the out-of-vehicle discharging function and the in-vehicle discharging function of the on-board charger based on the closing and opening of the out-of-vehicle discharging socket and the in-vehicle discharging socket.

[0105] The on-board charger can be electrically connected between the out-of-vehicle discharging socket and the in-vehicle discharging socket. The on-board charger can supply power to the out-of-vehicle electric device through the connection of the out-of-vehicle discharging socket. The on-board charger can supply power to the in-vehicle electric device through the connection of the in-vehicle discharging socket.

[0106] The on-board charger can be connected to the battery to supply power to the on-board device. The vehicle controller can control the on-board charger to supply power to the on-board device.

[0107] In some embodiments, as shown in Figure 5 A control schematic diagram when the out-of-vehicle inverter is connected to the top is shown in

[0108] In a possible implementation manner, the on-board charger of the vehicle can discharge through the out-of-vehicle discharging socket, and the out-of-vehicle discharging socket can detect whether to transmit electric energy outward through the CP signal.

[0109] Specifically, in the case that the CP signal is valid, the discharging control device can close the out-of-vehicle discharging function of the on-board charger. In the case that the CP signal is invalid, the discharging control device can open the out-of-vehicle discharging function of the on-board charger.

[0110] In some embodiments, as shown in Figure 6 A discharging control principle diagram is shown in

[0111] ​In one possible implementation, when the vehicle is in a static state, the on-board charger of the vehicle can supply power to the external electrical equipment through the external discharge socket and supply power to the internal electrical equipment through the internal discharge socket. The discharge control device can control the switching controller to control the turn-off and turn-on of the external discharge socket and the internal discharge socket, so as to further control the turn-on and turn-off of the external discharge function and the turn-on and turn-off of the internal discharge function of the on-board charger.

[0112] In some embodiments, as shown in FIG. 6, another discharge control principle diagram is provided. Figure 7

[0113] In one possible implementation, the vehicle controller controls the on-board charger to supply power to the on-board equipment. When the vehicle is in a dynamic state, the on-board charger can be connected with the battery to supply power to the on-board equipment and supply power to the internal electrical equipment through the internal discharge socket. The discharge control device can control the switching controller to control the turn-off and turn-on of the internal discharge socket, so as to control whether to supply power to the internal electrical equipment.

[0114] The discharge control device can determine the maximum output power of the on-board charger at the current time and the total power demand of the vehicle in the case that the on-board equipment is supplied with power in the discharge condition and the internal discharge function is turned on, so as to further control the internal discharge in the case that the total power demand is greater than the maximum output power.

[0115] In some embodiments, as shown in FIG. 6, another discharge control principle diagram is provided. Figure 8

[0116] The discharge control device obtains the DCDC capability curve and the internal power demand from the on-board charger and obtains the total low-voltage load demand power curve from the vehicle controller, and then determines the total power demand and the maximum output power of the on-board charger according to the total low-voltage load demand power curve and the internal power demand. The discharge control device can control the on-board charger to normally output in the case that the maximum output power is greater than the total power demand. The discharge control device can reduce the external discharge capability of the on-board charger in the case that the maximum output power is less than or equal to the total power demand, and determine the total power demand and the maximum output power in a first preset time length. The discharge control device can turn off the internal discharge function of the on-board charger if the total power demand is greater than the maximum output power after the first preset time length.

[0117] Figure 9 FIG. 7 is a block diagram of a discharge control device according to an example embodiment. Referring to FIG. 7, the discharge control device includes an obtaining unit 401, a control unit 402 and a determination unit 403. Figure 9

[0118] ​​​In a possible implementation, the acquisition unit 401 is configured to acquire an operating state of the vehicle and a discharging condition of the on-board charger; and the control unit is configured to perform discharging control on the on-board charger based on the operating state and the discharging condition.

[0119] In a possible implementation, the control unit 402 is specifically configured to: in a case where the discharging condition is that the in-vehicle discharging function is turned on and the off-vehicle discharging function is turned on, determine a total discharging power of the on-board charger; and in a case where the total discharging power is greater than a preset threshold, perform discharging control on the on-board charger.

[0120] In a possible implementation, the control unit 402 is specifically configured to: turn off the off-vehicle discharging function of the on-board charger; and in a case where the total discharging power of the on-board charger after the off-vehicle discharging function is turned off is greater than the preset threshold, turn off the in-vehicle discharging function of the on-board charger.

[0121] In a possible implementation, the control unit 402 is specifically configured to: in a case where the discharging condition is that the on-board device is powered and the in-vehicle discharging function is turned on, determine a maximum output power of the on-board charger at a current time and a total electrical energy demand of the vehicle; and in a case where the total electrical energy demand is greater than the maximum output power, perform control on the in-vehicle discharging.

[0122] In a possible implementation, the control unit 402 is specifically configured to: in a case where the total electrical energy demand is greater than the maximum output power, reduce the power of the in-vehicle discharging.

[0123] In a possible implementation, the control unit 402 is specifically configured to: if the total electrical energy demand of the vehicle is greater than the maximum output power after a first preset time length, turn off the in-vehicle discharging function of the on-board charger.

[0124] In a possible implementation, the control unit 402 is specifically configured to: if the total electrical energy demand of the vehicle is less than or equal to the maximum output power after a second preset time length, turn on the in-vehicle discharging function of the on-board charger.

[0125] In a possible implementation, the determination unit 403 is configured to, in a case where it is determined that the external discharging gun is connected, detect validity of a CP signal of the external discharging gun.

[0126] In a possible implementation, the control unit 402 is further configured to, in a case where the CP signal is valid, turn off the off-vehicle discharging function of the on-board charger.

[0127] In a possible implementation, the control unit 402 is further configured to, in a case where the CP signal is invalid, turn on the off-vehicle discharging function of the on-board charger.

[0128] As to the apparatus in the above embodiments, the specific manners in which the respective modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0129] Figure 10 is a block diagram of an electronic device according to an exemplary embodiment. As shown in Figure 10 , the electronic device includes, but is not limited to, a processor 501 and a memory 502.

[0130] The memory 502 described above is configured to store executable instructions of the processor 501 described above. It can be understood that the processor 501 described above is configured to execute the instructions to implement the discharge control method in the above embodiments.

[0131] It should be noted that those skilled in the art can understand that the electronic device structure shown in Figure 10 does not constitute a limitation on the electronic device, and the electronic device can include more or fewer components than those shown in Figure 10 , or combine certain components, or different component arrangements.

[0132] The processor 501 is the control center of the electronic device, and connects all parts of the electronic device through various interfaces and lines. The processor 501 performs various functions of the electronic device and processes data by running or executing software programs and / or modules stored in the memory 502 and calling data stored in the memory 502, thereby overall monitoring the electronic device. The processor 501 can include one or more processing units. Optionally, the processor 501 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the modem processor described above can also not be integrated into the processor 501.

[0133] The memory 502 can be used to store software programs and various data. The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs (such as determination units, processing units, etc.) required by at least one functional module, etc. In addition, the memory 502 can include a high-speed random access memory, and can also include a non-volatile memory, for example, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0134] In exemplary embodiments, a computer-readable storage medium including instructions is also provided, for example, the memory 502 including instructions, and the instructions can be executed by the processor 501 of the electronic device to implement the method in the above embodiments.

[0135] In actual implementation, Figure 9The functions in the acquisition unit 401, the control unit 402 and the determination unit 403 in the device can be implemented by Figure 10 The processor 501 in the device calls the computer program stored in the memory 502 to implement. The specific implementation process can refer to the description of the method part in the above embodiment, which will not be repeated here.

[0136] Alternatively, the computer readable storage medium can be a non-transitory computer readable storage medium, for example, the non-transitory computer readable storage medium can be a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a CD-ROM, a magnetic tape, a floppy disk and an optical data storage device, etc.

[0137] In the exemplary embodiments, the embodiments of the present application also provide a computer program product including one or more instructions, which can be executed by the processor 501 of the electronic device to complete the method in the above embodiments.

[0138] It should be noted that the instructions in the above computer readable storage medium or the one or more instructions in the computer program product are executed by the processor of the electronic device to realize the various processes of the above method embodiments, and can achieve the same technical effects as the above method. To avoid repetition, it will not be repeated here.

[0139] Through the description of the above embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of functional modules is taken as an example for illustration. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete the above described full classification part or part of the function.

[0140] In several embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented by other ways. For example, the device embodiment described above is only schematic, for example, the division of modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be through some interface, indirect coupling or communication connection between devices or units, which can be electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separate, and the components displayed as units may be a physical unit or multiple physical units, that is, may be located in one place, or also can be distributed to multiple different places. Part or all of the classified units can be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0142] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0143] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application essentially or the part of the prior art that contributes to the technical solutions or the whole classification or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for making a device (which can be a single-chip microcomputer, a chip, etc.) or a processor execute all or part of the steps of the method of each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various storage medium that can store program codes.

[0144] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A discharge control method characterized by, The method is applied to a vehicle and comprises: obtaining an operating state of the vehicle and a discharge condition of a vehicle-mounted charger; controlling discharge of the vehicle-mounted charger based on the operating state and the discharge condition; wherein, when the operating state is a driving state, the controlling discharge of the vehicle-mounted charger based on the operating state and the discharge condition comprises: when the discharge condition is that the vehicle-mounted charger supplies power to a vehicle-mounted device and an in-vehicle discharge function is turned on, determining a maximum output power of the vehicle-mounted charger at a current time and a total power demand of the vehicle; when the total power demand is greater than the maximum output power, reducing power for in-vehicle discharge; after the power for in-vehicle discharge is reduced, if the total power demand of the vehicle is greater than the maximum output power after a first preset time, turning off the in-vehicle discharge function of the vehicle-mounted charger; after the in-vehicle discharge function of the vehicle-mounted charger is turned off, if the total power demand of the vehicle is less than or equal to the maximum output power after a second preset time, turning on the in-vehicle discharge function of the vehicle-mounted charger.

2. The method of claim 1, wherein, The operating state comprises a stationary state, and when the operating state is the stationary state, the controlling discharge of the vehicle-mounted charger based on the operating state and the discharge condition comprises: when the discharge condition is that an in-vehicle discharge function is turned on and an out-of-vehicle discharge function is turned on, determining a total discharge power of the vehicle-mounted charger; when the total discharge power is greater than a preset threshold, controlling discharge of the vehicle-mounted charger.

3. The method of claim 2, wherein, The controlling discharge of the vehicle-mounted charger when the total discharge power is greater than the preset threshold comprises: turning off the out-of-vehicle discharge function of the vehicle-mounted charger; when the total discharge power after the out-of-vehicle discharge function of the vehicle-mounted charger is turned off is greater than the preset threshold, turning off the in-vehicle discharge function of the vehicle-mounted charger.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: when it is determined that an external discharge gun is connected, detecting validity of a CP signal of the external discharge gun; when the CP signal is valid, turning off the out-of-vehicle discharge function of the vehicle-mounted charger; when the CP signal is invalid, turning on the out-of-vehicle discharge function of the vehicle-mounted charger.

5. A discharge control device, characterized by comprising: The device comprises an obtaining unit and a control unit; the obtaining unit is configured to obtain an operating state of a vehicle and a discharge condition of a vehicle-mounted charger; the control unit is configured to control discharge of the vehicle-mounted charger based on the operating state and the discharge condition; wherein, when the operating state is a driving state, the controlling discharge of the vehicle-mounted charger based on the operating state and the discharge condition comprises: when the discharge condition is that the vehicle-mounted charger supplies power to a vehicle-mounted device and an in-vehicle discharge function is turned on, determining a maximum output power of the vehicle-mounted charger at a current time and a total power demand of the vehicle; when the total power demand is greater than the maximum output power, reducing power for in-vehicle discharge; if the total power demand of the vehicle is greater than the maximum output power of the on-board charger after a first preset time period after reducing the power for the on-board discharge, the on-board discharge function of the on-board charger is turned off; if the total power demand of the vehicle is less than or equal to the maximum output power of the on-board charger after a second preset time period after turning off the on-board discharge function of the on-board charger, the on-board discharge function of the on-board charger is turned on.

6. A discharge control system characterized by comprising: The system comprises a sensor and a discharge control device. The sensor is configured to collect the running state of the vehicle and the discharge condition of the on-board charger. The discharge control device is configured to obtain the running state and the discharge condition collected by the sensor. The discharge control device is further configured to control the discharge of the on-board charger based on the running state and the discharge condition. In the case that the running state is a driving state, the discharge control of the on-board charger based on the running state and the discharge condition comprises: determining the maximum output power of the on-board charger at the current time and the total power demand of the vehicle in the case that the discharge condition is that the on-board equipment is powered and the on-board discharge function is turned on; reducing the power for the on-board discharge in the case that the total power demand is greater than the maximum output power; if the total power demand of the vehicle is greater than the maximum output power of the on-board charger after a first preset time period after reducing the power for the on-board discharge, the on-board discharge function of the on-board charger is turned off; if the total power demand of the vehicle is less than or equal to the maximum output power of the on-board charger after a second preset time period after turning off the on-board discharge function of the on-board charger, the on-board discharge function of the on-board charger is turned on.

7. A vehicle characterized by comprising: The vehicle comprises the discharge control system of claim 6.

8. An electronic device, comprising: comprise: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the method of any one of claims 1 to 4.

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