Discharge control method, device, system and equipment and vehicle

Abstract

The invention relates to a discharge control method, device, system and equipment and a vehicle, and relates to the technical field of new energy automobiles. The method comprises the steps that the running state of a vehicle and the discharging condition of a vehicle-mounted charger are obtained; and performing discharge control on the vehicle-mounted charger based on the operation state and the discharge condition. Therefore, discharge control can be carried out on the vehicle-mounted charger, and feed of the storage battery is avoided.

Description

Technical Field

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

[0002] In response to environmental pollution and the tense situation of oil energy supply, new energy vehicles have become the mainstream of the automobile manufacturing industry, and electric vehicles are the core force in the field of new energy vehicles. As new energy electric vehicles are increasingly becoming the key direction for the development of the future automobile industry, on-board electronic equipment is rapidly developing in the direction of miniaturization, integration and high power density. At present, integrated on-board chargers with multiple functions have been successfully mass-produced.

[0003] However, when discharging both 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 the related technology CN107623365A can integrate an independent charger and a high-power DCDC module, and also has an inverter function, sharing a power switch, a control circuit and a magnetic core, so as to flexibly realize the control and switching of the charger mode, the self-powered mode and the 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 dual auxiliary sources to switch back and forth, so that the first auxiliary source and the second auxiliary source will not be fully loaded or lightly loaded, which reduces the overall loss of the converter and improves the conversion efficiency, but related technology 2 cannot solve the battery feeding problem.

[0006] Therefore, it is necessary to explore effective ways to avoid the problem of battery feeding due to insufficient DCDC power. Summary of the invention

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

[0008] According to a first aspect provided by the present application, a discharge control method is provided, which is applied to a vehicle, and the method includes: obtaining the operating status of the vehicle and the discharge status of an on-board charger; and controlling the discharge of the on-board charger based on the operating status and the discharge status.

[0009] According to the above technical means, the present application can control the discharge according to the operating status of the vehicle and the discharge status of the on-board charger, thereby intelligently distributing electrical energy to ensure that the in-vehicle and out-of-vehicle equipment obtains sufficient power supply when needed, while avoiding battery feeding caused by excessive or deep discharge of the battery, thereby extending the service life of the battery.

[0010] In one possible implementation, the operating state includes a stationary state. When the operating state is a stationary state, the on-board charger is controlled to discharge based on the operating state and the discharge condition, including: when the discharge condition is that the in-vehicle discharge function is turned on and the out-vehicle discharge function is turned on, the total discharge power of the on-board charger is determined; when the total discharge power is greater than a preset threshold, the on-board charger is controlled to discharge.

[0011] According to the above technical means, in order to avoid the situation where the total output power of the on-board charger exceeds the design limit and causes overload problems when the on-board charger supplies power to both in-vehicle and external devices at the same time, the present application can control the discharge of the on-board charger when the total discharge power is greater than a preset threshold, ensuring that the on-board charger operates within a safe power range to avoid power feeding of the battery and extend its service life.

[0012] In one possible implementation, when the total discharge power is greater than a preset threshold, the on-board charger is controlled to discharge, including: turning off the on-board charger's off-vehicle discharge function; when the total discharge power after the on-board charger turns off the off-vehicle discharge function is greater than a preset threshold, turning off the on-vehicle discharge function of the on-board charger.

[0013] According to the above technical means, the present application can timely shut down the discharge function outside or inside the vehicle when the total discharge power exceeds the design limit of the on-board charger to prevent the overload current from causing damage to the on-board charger and the battery system, and by controlling the discharge power, it can avoid the on-board charger and the battery system being in a high-load state for a long time, thereby extending their service life.

[0014] In one possible implementation, the operating state includes a driving state. When the operating state is the driving state, the discharge of the on-board charger is controlled based on the operating state and the discharge condition. It also includes: when the discharge condition is to power the on-board equipment and the in-vehicle discharge function is turned on, determining the maximum output power of the on-board charger at the current moment and the total power demand of the vehicle; when the total power demand is greater than the maximum output power, controlling the in-vehicle discharge.

[0015] According to the above technical means, when the vehicle is driving, the maximum output power of the on-board charger may change with 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. In addition, when the vehicle is driving, the power demand of the on-board equipment may increase due to the turning on of some equipment (such as vehicle headlights, seat heating). Therefore, in order to avoid the problem of battery feeding during driving, thereby causing power interruption, the present application can be controlled by controlling the discharge of the on-board charger.

[0016] In one possible implementation, when the total power demand is greater than the maximum output power, the in-vehicle discharge is controlled, including: when the total power demand is greater than the maximum output power, reducing the power discharged into the vehicle.

[0017] According to the above technical means, the present application can reduce the power discharged in the vehicle when the total power demand exceeds the maximum output power of the vehicle power system, and avoid continuing to supply power to the in-vehicle equipment at high power, which may cause the power system to overload and cause battery power feeding problems.

[0018] In one possible implementation, after reducing the power discharged into 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 period, turning off the in-vehicle discharge function of the on-board charger.

[0019] According to the above technical means, the present application can avoid overload of the vehicle's power system and battery feeding problems by turning off the in-vehicle discharge function when the total power demand is continuously higher than the maximum output power.

[0020] In one possible implementation, after turning off the in-vehicle discharge function of the on-board charger, 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 period, turning on the in-vehicle discharge function of the on-board charger.

[0021] According to the above technical means, the present application can, when the total power demand of the vehicle drops below the maximum output power, reopen the in-vehicle discharge function to ensure that the power is more fully utilized, avoid energy waste, and improve user experience.

[0022] In one possible implementation, when it is determined that the external discharge gun is connected, the validity of the CP signal of the external discharge gun is detected; when the CP signal is valid, the external discharge function of the on-board charger is turned off; when the CP signal is invalid, the external discharge function of the on-board charger is turned on.

[0023] According to the second aspect provided by the present application, a discharge control device is provided, including: an acquisition unit and a control unit; the acquisition unit is used to acquire the operating status of the vehicle and the discharge status of the on-board charger; the control unit is used to control the discharge of the on-board charger based on the operating status and the discharge status.

[0024] In one possible implementation, the control unit is specifically used to: determine the total discharge power of the on-board charger when the in-vehicle discharge function is turned on and the out-vehicle discharge function is turned on; and control the discharge of the on-board charger when the total discharge power is greater than a preset threshold.

[0025] In one possible implementation, the control unit is specifically used to: turn off the off-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 a preset threshold, turn off the on-vehicle discharge function of the on-board charger.

[0026] In one possible implementation, the control unit is specifically used to: determine the maximum output power of the on-board charger at the current moment and the total power demand of the vehicle when the discharge is to power the on-board equipment and the in-vehicle discharge function is turned on; and control the in-vehicle discharge when the total power demand is greater than the maximum output power.

[0027] In a possible implementation, the control unit is specifically configured to reduce the power discharged into the vehicle when the total electric energy demand is greater than the maximum output power.

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

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

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

[0031] According to the third aspect provided by the present application, a discharge control system is provided, including: a sensor and a discharge control device; the sensor is used to collect the operating status of the vehicle and the discharge status of the on-board charger; the discharge control device is used to obtain the operating status and discharge status collected by the sensor; the discharge control device is also used to control the discharge of the on-board charger based on the operating status and discharge status.

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

[0033] According to the fifth aspect provided by 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 instructions to implement the method of the above-mentioned first aspect and any possible implementation manner thereof.

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

[0035] According to the seventh aspect provided by the present application, a computer program product is provided, the computer program product comprising computer instructions, and when the computer instructions are executed on an electronic device, the electronic device executes the method of the above-mentioned first aspect and any possible implementation manner thereof.

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

[0037] (1) Discharge control can be performed based on the vehicle's operating status and the discharge status of the on-board charger, thereby intelligently distributing electrical energy to ensure that in-vehicle and out-of-vehicle devices receive sufficient power when needed, while avoiding battery over-discharge or deep discharge that causes battery charging, thereby extending the battery's service life.

[0038] (2) In order to prevent the on-board charger from supplying power to both in-vehicle and external devices at the same time, where its total output power may exceed the design limit and cause 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, ensuring that the on-board charger operates within a safe power range, thereby avoiding power feeding of the battery and extending its service life.

[0039] (3) When the total discharge power exceeds the design limit of the on-board charger, the discharge function outside or inside the vehicle can be turned off in time to prevent the overload current from damaging the on-board charger and battery system. By controlling the discharge power, the on-board charger and battery system can be prevented from being in a high-load state for a long time, thereby extending their service life.

[0040] (4) When the vehicle is driving, the maximum output power of the on-board charger may change with the power level of the power battery, that is, when the power level of the power battery is high, the maximum output power of the on-board charger is large, and when the power level of the power battery is low, the maximum output power of the on-board charger is small. In addition, when the vehicle is driving, the power demand of the on-board equipment may increase due to the turning on of some equipment (such as vehicle headlights, seat heating). Therefore, in order to avoid the problem of power interruption caused by battery feeding during driving, the present application can be controlled by controlling the discharge of the on-board charger.

[0041] (5) When the total power demand exceeds the maximum output power of the vehicle power system, the power discharged in the vehicle can be reduced to avoid continuing to supply high power to the equipment in the vehicle, which may cause the power system to overload and cause battery power feeding problems.

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

[0043] (7) When the total power demand of the vehicle drops below the maximum output power, re-enabling the in-vehicle discharge function can 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 about by any implementation method in the second to seventh aspects can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0045] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

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

[0048] Figure 2 is a flow chart showing a discharge control method according to an exemplary embodiment;

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

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

[0051] Figure 5 is a control schematic diagram of another off-vehicle inverter when facing the top according to an exemplary embodiment;

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

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

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

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

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

[0057] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0059] In the embodiments of the present application, words such as "exemplary", "for example", or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary", "for example", or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example", or "for example" is intended to present related concepts in a specific way.

[0060] First, the related technologies involved in this application are explained to facilitate understanding by those skilled in the art.

[0061] In order to effectively deal with the increasingly severe environmental pollution problem and the tension in the supply of oil energy, new energy vehicles have gradually occupied a 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 with their advantages such as zero emissions and low noise. With the continuous advancement of technology and the continuous promotion of policies, new energy electric vehicles are increasingly becoming the key direction and inevitable trend of the future development of the automobile industry.

[0062] In this context, in-vehicle equipment has also ushered in unprecedented development opportunities, and they are rapidly developing towards more miniaturization, integration, and high power density. This development trend not only helps to improve the overall performance and driving experience of the vehicle, but also can reduce production costs to a certain extent and improve market competitiveness.

[0063] At present, with the continuous breakthrough of technology and the increasing maturity of the market, integrated on-board chargers with multiple functions have been successfully mass-produced and widely used in various new energy electric vehicles. This integrated on-board charger not only has efficient and convenient charging functions, but also can provide stable power supply for vehicles, ensuring that vehicles can operate normally under various working conditions.

[0064] However, in actual use, new energy electric vehicles also face some technical challenges. In particular, when discharging inside and outside the vehicle at the same time and the inversion function in the vehicle is enabled, the battery (usually called 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 an independent charger and a high-power DCDC module, and also has an inverter function, sharing a power switch, a control circuit and a magnetic core, so as to flexibly realize the control and switching of the charger mode, the self-powered mode and the inverter mode. However, the motor may cause the battery to be fed due to insufficient power of the DCDC.

[0066] Related technology 2 uses dual auxiliary sources to switch back and forth, so that the first auxiliary source and the second auxiliary source will not be fully loaded or lightly loaded, which reduces the overall loss of the converter and improves the conversion efficiency, but related technology 2 cannot solve the battery feeding problem.

[0067] As mentioned in the background technology, in order to solve the problem of insufficient power of DCDC in the related technology, which leads to power feeding problem of the battery, the present application provides a discharge control method, which can obtain the operating status of the vehicle and the discharge status of the on-board charger, and based on the operating status and the discharge status, control the discharge of the on-board charger to avoid the problem of insufficient power of DCDC, thereby avoiding the problem of power feeding of the battery.

[0068] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0069] The discharge control method provided in the embodiment of the present application can be applied in a vehicle. A 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 present application, the vehicle may be a sedan, 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.), an unmanned taxi, an intelligent networked bus, an automatic driving 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 present application does not impose specific restrictions on this.

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

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

[0073] The structure shown in the embodiment of the present application does not constitute a limitation on the vehicle 100. It may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may 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 AC power into DC power, charge the power battery, and power other electrical appliances through the output port. The on-board charger may include components such as an input port, a control unit, a power unit, a low-voltage auxiliary unit, and an output port. The input port can be used to connect an external AC power source, such as a household 220V power grid. The control unit can be responsible for sampling the output current and voltage. The power unit may include an input rectifier, an inverter circuit, and an output rectifier part to convert the input AC power into DC power 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 may be a bidirectional on-board charger capable of charging a power battery and supplying power to other electrical appliances through an output port.

[0076] The vehicle-mounted device 102 includes but is not limited to a motor controller, a motor, a reducer, a battery management system, a vehicle controller, a vehicle headlight, a central control device, etc. These devices work together to realize functions such as driving, controlling, monitoring and protecting the vehicle 100. The vehicle-mounted device 102 can be connected to the vehicle-mounted charger 101. The vehicle-mounted charger 101 can supply power to the vehicle-mounted device 102.

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

[0078] In a possible implementation, the discharge control system 103 may be an inverter controller deployed in the on-board charger 101. The discharge control system 103 may include: a sensor and a discharge control device.

[0079] The sensor can be used to collect the operating status of the vehicle and the discharge status of the on-board charger. The discharge control device can be used to obtain the operating status and the discharge status collected by the sensor. The discharge control device can also be used to control the discharge of the on-board charger based on the operating status and the discharge status.

[0080] For ease of understanding, the discharge control method provided in the present application is specifically introduced below with reference to the accompanying drawings.

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

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

[0083] The running state of the vehicle includes a stationary state and a moving state. The discharge state of the on-board charger includes powering the on-board equipment and / or enabling the discharge function inside the vehicle and / or enabling the discharge function outside the vehicle.

[0084] Specifically, the discharge control device can obtain the current speed of the vehicle. The discharge control device can determine the running state of the vehicle based on the current speed of the vehicle, that is, when the current speed is zero, the running state of the vehicle is determined to be a stationary state, and when the current speed is greater than zero, the running state of the vehicle is determined to be a moving state. The discharge control device can determine whether the in-vehicle discharge function and the out-of-vehicle discharge function are turned on, and whether the on-board equipment currently needs power supply to determine the discharge status of the on-board charger.

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

[0086] It is understandable that when the CP value is detected to be valid, the vehicle may be in a charging state. At this time, if the discharge continues, it may cause damage to the bidirectional on-board charger. Therefore. When the CP signal is valid, the discharge control device can turn off the off-board discharge function of the on-board charger. The discharge control device can turn on the off-board discharge function of the on-board charger when the CP signal is invalid.

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

[0088] S202: Based on the operating state and the discharge condition, the on-board charger is controlled to discharge.

[0089] In one possible implementation, when the running state is a stationary state, the discharge condition is that the in-vehicle discharge function is turned on, and the out-vehicle discharge function is turned on, the discharge control device can determine the total discharge power of the on-board charger. The discharge control device can control the discharge of the on-board charger when the total discharge power is greater than a preset threshold.

[0090] Optionally, the preset threshold value may be determined according to the actual situation of the on-board charger. For example, the preset threshold value may be 6.6 kilowatt hours (kwh) or 5.5 kwh. This will not be described in detail here.

[0091] Specifically, when the running state is a stationary state, the discharge condition is that the in-vehicle discharge function is turned on, and the out-vehicle discharge function is turned on, the discharge control device can measure the output port of the on-board charger through a measuring instrument to obtain the power output by multiple output ports, and determine the sum of the power output by multiple output ports as the total discharge power. The discharge control device can compare the total discharge power with a preset threshold value, and when the total discharge power is greater than the preset threshold value, the on-board charger is discharged, that is, the out-vehicle discharge function of the on-board charger is turned off. The discharge control device can determine the total discharge power of the on-board charger after the out-vehicle discharge function is turned off, and when the total discharge power of the on-board charger after the out-vehicle discharge function is turned off is greater than the preset threshold value, the in-vehicle discharge function of the on-board charger is turned off.

[0092] In some embodiments, the discharge control device controls the discharge of the on-board charger when the total discharge power is greater than a preset threshold, and may also include: limiting the external discharge and internal discharge power of the on-board charger to limit the total discharge power within the preset threshold.

[0093] It should be noted that when the on-board charger supplies power to both in-vehicle and external devices at the same time, its total output power may exceed the design limit, resulting in overload. However, long-term overload operation will accelerate the on-board charger and battery power supply, shortening their service life. Therefore, this application can control the discharge of the on-board charger when the total discharge power is greater than the preset threshold, ensuring that the on-board charger operates within a safe power range and extending its service life.

[0094] In another possible implementation, when the running state is the driving state, the discharging condition is powering the vehicle-mounted equipment, 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 moment and the total power demand of the vehicle. The discharging control device can control the in-vehicle discharging when the total power demand is greater than the maximum output power.

[0095] Specifically, the discharge control device can obtain the real-time DCDC capability curve of the on-board charger, as well as the in-vehicle discharge demand and the in-vehicle equipment power supply demand. The discharge control device can determine the maximum output power of the on-board charger at the current moment based on the real-time DCDC capability curve, and determine the total power demand of the vehicle based on the in-vehicle discharge demand and the in-vehicle equipment power supply demand. The discharge control device can control the in-vehicle discharge when the total power demand is greater than the maximum output power. Specifically including: reducing the power discharged into the vehicle, and after reducing the power discharged into the vehicle, if the total power demand of the vehicle is greater than the maximum output power after the first preset time, then turning off the in-vehicle discharge function of the on-board charger, so as to further turn on the in-vehicle discharge function of the on-board charger if the total power demand of the vehicle is less than or equal to the maximum output power after the second preset time after turning off the in-vehicle discharge function of the on-board charger.

[0096] Optionally, the first preset duration can be set according to actual needs. For example, the first preset duration can be one minute or two minutes. This application does not make specific restrictions on this.

[0097] Optionally, the second preset duration can be set according to actual needs. For example, the second preset duration can be five minutes or ten minutes. This application does not make specific restrictions on this.

[0098] In some embodiments, the discharge control device can reduce the power discharged into the vehicle, and within a preset time period after reducing the power discharged into the vehicle, perform multiple detections on the total power demand and the maximum output power, and if the results of multiple detections are that the total power demand is greater than the maximum output power, turn off the in-vehicle discharge function of the on-board charger, and further, after turning off the in-vehicle discharge function of the on-board charger, if the total power demand of the vehicle is less than or equal to the maximum output power after a second preset time period, turn on the in-vehicle discharge function of the on-board charger.

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

[0100] In addition, when the vehicle is driving, the power demand of the on-board equipment may increase due to the opening of some equipment (such as vehicle headlights, seat heating). Therefore, in order to avoid the problem of power interruption caused by battery feeding during the vehicle driving, the present application can control the discharge of the on-board charger.

[0101] Based on the above Figure 2The technical solution in the present application can control the discharge according to the operating status of the vehicle and the discharge status of the on-board charger, thereby intelligently distributing electrical energy to ensure that the in-vehicle and out-of-vehicle devices have sufficient power supply when needed, while avoiding battery feeding caused by excessive or deep discharge of the battery, thereby extending the service life of the battery.

[0102] In some embodiments, Figure 4 Shown is a schematic diagram of the structure of another vehicle provided by the present application.

[0103] The vehicle may include a discharge control device, an on-board charger, an external discharge socket, an internal discharge socket, a vehicle controller, and a battery.

[0104] The discharge control device can be connected to the external discharge socket and the internal discharge socket of the vehicle for communication. The discharge control device can control the opening and closing of the external discharge function of the vehicle charger and the opening and closing of the internal discharge function of the vehicle charger based on the closing and opening of the external discharge socket and the internal discharge socket.

[0105] The on-board charger can be electrically connected to the discharge socket outside the vehicle and the discharge socket inside the vehicle. The on-board charger can supply power to the electrical equipment outside the vehicle through the connection of the discharge socket outside the vehicle. The on-board charger can supply power to the electrical equipment inside the vehicle through the connection of the discharge socket inside the vehicle.

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

[0107] In some embodiments, Figure 5 The figure shows a control schematic diagram of an off-vehicle inverter facing the top.

[0108] In one possible implementation, the vehicle's onboard charger can discharge through an off-vehicle discharge socket, and the off-vehicle discharge socket can detect through a CP signal discharge probe to determine whether to transmit electric energy to the outside.

[0109] Specifically, when the CP signal is valid, the discharge control device can turn off the off-vehicle discharge function of the on-vehicle charger. When the CP signal is invalid, the discharge control device can turn on the off-vehicle discharge function of the on-vehicle charger.

[0110] In some embodiments, Figure 6 The figure shows a discharge control principle diagram.

[0111] In a possible implementation, when the vehicle is stationary, the vehicle's onboard charger 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 turning off and on of the external discharge socket and the internal discharge socket based on the switch controller to further control the turning on and off of the external discharge function of the onboard charger, and the turning on and off of the internal discharge function.

[0112] In some embodiments, Figure 7 As shown, it is another discharge control principle diagram.

[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 motion, the on-board charger can be connected to the battery to supply power to the on-board equipment, and the on-board electrical equipment can be supplied through the in-vehicle discharge socket. The discharge control device can control the on-off and on-off of the in-vehicle discharge socket based on the switch controller to control whether to supply power to the in-vehicle electrical equipment.

[0114] The discharge control device can power the on-board equipment under discharge conditions and when the in-vehicle discharge function is turned on, determine the maximum output power of the on-board charger at the current moment and the total power demand of the vehicle, so as to further control the in-vehicle discharge when the total power demand is greater than the maximum output power.

[0115] In some embodiments, Figure 8 The figure shows a schematic diagram of a discharge control process.

[0116] The discharge control device obtains the DCDC capability curve and the in-vehicle power demand from the on-board charger, and obtains the low-voltage load demand power curve of the whole vehicle from the vehicle controller, and then determines the total power demand and the maximum output power of the on-board charger according to the low-voltage load demand power curve of the whole vehicle and the in-vehicle power demand. The discharge control device can control the normal output of the on-board charger when the maximum output power is greater than the total power demand. The discharge control device can reduce the off-vehicle discharge capacity of the on-board charger when 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 within a first preset time. The discharge control device can turn off the in-vehicle discharge function of the on-board charger if the total power demand is greater than the maximum output power after the first preset time.

[0117] Fig. 9 is a block diagram of a discharge control device according to an exemplary embodiment. Fig. 9 The discharge control device includes: an acquisition unit 401, a control unit 402 and a determination unit 403.

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

[0119] In one possible implementation, the control unit 402 is specifically used to: determine the total discharge power of the on-board charger when the in-vehicle discharge function is turned on and the out-vehicle discharge function is turned on; and control the discharge of the on-board charger when the total discharge power is greater than a preset threshold.

[0120] In one possible implementation, the control unit 402 is specifically used to: turn off the off-vehicle discharge function of the on-board charger; when the total discharge power after the on-board charger turns off the off-vehicle discharge function is greater than a preset threshold, turn off the on-vehicle discharge function of the on-board charger.

[0121] In one possible implementation, the control unit 402 is specifically used to: determine the maximum output power of the on-board charger at the current moment and the total power demand of the vehicle when the discharge is to power the on-board equipment and the in-vehicle discharge function is turned on; and control the in-vehicle discharge when the total power demand is greater than the maximum output power.

[0122] In a possible implementation, the control unit 402 is specifically configured to reduce the power discharged into the vehicle when the total power demand is greater than the maximum output power.

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

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

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

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

[0127] In a possible implementation, the control unit 402 is further configured to enable the off-vehicle discharge function of the on-vehicle charger when the CP signal is invalid.

[0128] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0129] Fig.10 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Fig.10 As shown, the electronic device includes but is not limited to: a processor 501 and a memory 502 .

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

[0131] It should be noted that those skilled in the art can understand that Fig.10 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and the electronic device may include Fig.10 More or fewer components may be shown, or certain components may be combined, or the components may be arranged differently.

[0132] The processor 501 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 502, and calling data stored in the memory 502, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 501 may include one or more processing units. Optionally, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may 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, an application program required by at least one functional module (such as a determination unit, a processing unit, etc.), etc. In addition, the memory 502 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0134] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 502 including instructions. The above instructions can be executed by a processor 501 of an electronic device to implement the method in the above embodiment.

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

[0136] Optionally, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

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

[0138] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above-mentioned method embodiment are implemented, and the same technical effect as the above-mentioned method can be achieved. To avoid repetition, they will not be repeated here.

[0139] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0140] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0142] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0143] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the full classification part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute the full classification part or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, disk or CD and other media that can store program code.

[0144] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A discharge control method, characterized in that: Applied to a vehicle, the method comprises: Obtaining the operating status of the vehicle and the discharge status of the on-board charger; Based on the operating state and the discharging condition, the on-board charger is controlled to discharge.

2. The method according to claim 1, characterized in that The operating state includes a stationary state. When the operating state is the stationary state, the discharging control of the on-board charger based on the operating state and the discharging condition includes: In the case where the discharge condition is that the in-vehicle discharge function is turned on and the out-vehicle discharge function is turned on, determining the total discharge power of the on-board charger; When the total discharge power is greater than a preset threshold, the on-board charger is controlled to discharge.

3. The method according to claim 2, characterized in that When the total discharge power is greater than a preset threshold, the on-board charger is controlled to discharge, including: Turn off the off-vehicle discharge function of the on-vehicle charger; When the total discharge power of the on-board charger after turning off the off-board discharge function is greater than a preset threshold, the on-board discharge function of the on-board charger is turned off.

4. The method according to claim 1, characterized in that The operating state includes a driving state. When the operating state is the driving state, the discharging control of the on-board charger based on the operating state and the discharging condition further includes: In the case where the discharge condition is to power the vehicle-mounted device and the in-vehicle discharge function is turned on, determining the maximum output power of the vehicle-mounted charger at the current moment and the total power demand of the vehicle; When the total electric energy demand is greater than the maximum output power, the in-vehicle discharge is controlled.

5. The method according to claim 4, characterized in that When the total electric energy demand is greater than the maximum output power, controlling the in-vehicle discharge includes: When the total electric energy demand is greater than the maximum output power, the power discharged into the vehicle is reduced.

6. The method according to claim 5, characterized in that After reducing the power discharged into the vehicle, the method further includes: If the total power demand of the vehicle is greater than the maximum output power after the first preset time period, the in-vehicle discharge function of the on-board charger is turned off.

7. The method according to claim 6, characterized in that After turning off the in-vehicle discharge function of the on-board charger, the method further includes: If the total power demand of the vehicle is less than or equal to the maximum output power after the second preset time period, the in-vehicle discharge function of the on-board charger is turned on.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: In the case of determining that the external discharge gun is connected, detecting the validity of the CP signal of the external discharge gun; When the CP signal is valid, turning off the off-vehicle discharge function of the on-board charger; When the CP signal is invalid, the off-vehicle discharge function of the on-vehicle charger is turned on.

9. A discharge control device, characterized in that: The device comprises: an acquisition unit and a control unit; The acquisition unit is used to acquire the running state of the vehicle and the discharge state of the on-board charger; The control unit is used to control the discharge of the on-board charger based on the operating state and the discharge condition.

10. A discharge control system, characterized in that: The system comprises: a sensor and a discharge control device; The sensor is used to collect the running status of the vehicle and the discharge status of the on-board charger; The discharge control device is used to obtain the operating state and the discharge condition collected by the sensor; The discharge control device is further used to control the discharge of the on-board charger based on the operating state and the discharge condition.

11. A vehicle, characterized in that: The vehicle includes the discharge control system of claim 10 .

12. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method according to any one of claims 1 to 8.

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