Vehicle control method and device and related equipment

Abstract

The invention discloses a vehicle control method and device and related equipment, which are applied to a vehicle control unit, and the method comprises the following steps: responding to a high-voltage power-off instruction input by a user when a high-voltage battery pack of a vehicle is in a power-on state; acquiring a first load power value of load equipment, a first discharge power value of the lithium battery and a first battery charge state value; under the condition that the first load power value is larger than the first discharging power value or the first battery charge state value is smaller than a preset first battery electric quantity threshold value, the vehicle is controlled to enter a low-power-consumption mode; acquiring a second load power value of the load equipment, a second discharge power value of the lithium battery and a second battery charge state value; and under the condition that the second load power value is smaller than or equal to the second discharge power value and the second battery charge state value is larger than a preset second battery electric quantity threshold value, the vehicle is controlled to exit the low-power-consumption mode, and the high-voltage battery pack is controlled to be powered off, so that the lithium battery supplies power to load equipment.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular, relates to a vehicle control method, device and related equipment. Background Art

[0002] With the development and popularization of new energy vehicles, batteries, as their core power source, play a vital role in driving range, charging speed, safety, cost, environmental protection and user experience. At present, due to the characteristics of long service life, large capacity and light weight, more and more new energy vehicles have chosen to use 12V lithium batteries to replace traditional lead-acid batteries. However, in some cases (such as high and low temperature environments), the discharge power of 12V lithium batteries is low and cannot meet the normal needs of load equipment. The load equipment will try to draw more current from the battery, causing overcurrent failure of the lithium battery. Summary of the invention

[0003] The embodiments of the present application provide a vehicle control method, device and related equipment, which can reduce the load power demand and thus avoid overcurrent failure of the lithium battery.

[0004] In a first aspect, an embodiment of the present application provides a vehicle control method, which is applied to a vehicle control unit, and the method includes:

[0005] When the high-voltage battery pack of the vehicle is in a powered-on state, in response to a high-voltage power-off instruction input by a user, obtaining a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off;

[0006] When the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold, controlling the vehicle to enter a low power consumption mode;

[0007] When the vehicle is in the low power consumption mode, obtaining a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value;

[0008] When the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than a preset second battery power threshold, the vehicle is controlled to exit the low power consumption mode and the high-voltage battery pack is powered off so that the lithium battery can power the load device, and the second battery power threshold is greater than the first battery power threshold.

[0009] In a second aspect, an embodiment of the present application provides a vehicle control device, which is applied to a vehicle control unit, and the device includes:

[0010] A first acquisition module, configured to acquire, when the high-voltage battery pack of the vehicle is in a powered-on state, a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value in response to a high-voltage power-off instruction input by a user, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off;

[0011] A first control module, configured to control the vehicle to enter a low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than a preset first battery power threshold;

[0012] A second acquisition module, configured to acquire, when the vehicle is in the low power consumption mode, a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value;

[0013] A second control module is used to control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off when the second load power value is less than or equal to the second discharge power value and the second battery state of charge value is greater than a preset second battery power threshold, so that the lithium battery can power the load device, and the second battery power threshold is greater than the first battery power threshold.

[0014] In a third aspect, an embodiment of the present application provides a vehicle control system, the system comprising:

[0015] High-voltage battery pack, used to output high-voltage direct current;

[0016] a DC converter, connected to the high-voltage battery pack, and configured to convert the high-voltage DC power output by the high-voltage battery pack into a low-voltage DC power;

[0017] A lithium battery connected to the DC converter for outputting low-voltage DC power;

[0018] A vehicle control unit is connected to the DC converter, the lithium battery and the load device, and is used to obtain a first load power value of the load device, a first discharge power value of the lithium battery and a first battery state of charge value in response to a high-voltage power-off instruction input by a user when the high-voltage battery pack is in a powered-on state, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off; when the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold, control the vehicle to enter a low power consumption mode; when the vehicle is in the low power consumption mode, obtain a second load power value of the load device, a second discharge power value and a second battery state of charge value of the lithium battery; when the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than a preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery supplies power to the load device, and the second battery power threshold is greater than the first battery power threshold.

[0019] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, the vehicle control method as described in any one of the above is implemented.

[0020] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the vehicle control method as described in any one of the above is implemented.

[0021] In a sixth aspect, an embodiment of the present application provides a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes any one of the vehicle control methods described above.

[0022] In a seventh aspect, an embodiment of the present application provides a vehicle, comprising at least one of the following:

[0023] A vehicle control device as described above;

[0024] A vehicle control system as described above;

[0025] Electronic devices as described above;

[0026] The computer readable storage medium as described above;

[0027] A computer program product as described above.

[0028] In the vehicle control method, device and related equipment of the embodiment of the present application, the vehicle control unit can obtain the first load power value of the load device, the first discharge power value of the lithium battery and the first battery state of charge value in response to the high-voltage power-off instruction input by the user when the high-voltage battery pack of the vehicle is in the power-on state, and control the vehicle to enter the low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than the preset first battery power threshold, and then obtain the second load power value of the load device, the second discharge power value of the lithium battery and the second battery state of charge value, and only when the second load power value is less than or equal to the second discharge power value and the second battery state of charge value is greater than the preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery can power the load device. In this way, in the embodiment of the present application, when the discharge capacity of the lithium battery cannot meet the power required by the load device, the vehicle can be controlled to enter the low power consumption mode to prohibit unnecessary work of the load device and reduce the load power demand, thereby avoiding overcurrent faults of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 is an architecture diagram of a vehicle control system provided in an embodiment of the present application;

[0031] Figure 2 is a flow chart of a vehicle control method provided in an embodiment of the present application;

[0032] Figure 3 It is a vehicle architecture diagram provided by an embodiment of the present application;

[0033] Figure 4 This is a flowchart of a scenario embodiment provided by an embodiment of the present application;

[0034] Figure 5 It is a flowchart of another scenario embodiment provided by the embodiment of the present application;

[0035] Figure 6 is a schematic diagram of the structure of a vehicle control device provided in an embodiment of the present application;

[0036] Figure 7 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0039] With the development and popularization of new energy vehicles, batteries, as their core power source, play a vital role in driving range, charging speed, safety, cost, environmental protection and user experience. At present, due to the characteristics of long service life, large capacity and light weight, more and more new energy vehicles have chosen to use 12V lithium batteries to replace traditional lead-acid batteries. However, in some cases (such as high and low temperature environments), the discharge power of 12V lithium batteries is low and cannot meet the normal needs of load equipment. The load equipment will try to draw more current from the battery, causing overcurrent failure of the lithium battery.

[0040] In order to solve the problems in the prior art, the embodiments of the present application provide a vehicle control method, device and related equipment. The vehicle control system provided by the embodiments of the present application is first introduced below.

[0041] Figure 1 FIG. 1 shows an architecture diagram of a vehicle control system applicable to an embodiment of the present application. Figure 1 As shown, the vehicle control system 100 may include:

[0042] A high-voltage battery pack 101 is used to output high-voltage direct current;

[0043] A DC converter 102 is connected to the high-voltage battery pack and is used to convert the high-voltage DC power output by the high-voltage battery pack into a low-voltage DC power;

[0044] The lithium battery 103 is connected to a DC converter for outputting low voltage DC power;

[0045] The vehicle control unit 104 is connected to the DC converter, the lithium battery and the load device, and is used to obtain a first load power value of the load device, a first discharge power value of the lithium battery and a first battery state of charge value in response to a high-voltage power-off instruction input by a user when the high-voltage battery pack is in a powered-on state, and the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off; when the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold, control the vehicle to enter a low power consumption mode; when the vehicle is in the low power consumption mode, obtain a second load power value of the load device, a second discharge power value and a second battery state of charge value of the lithium battery; when the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than a preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery supplies power to the load device, and the second battery power threshold is greater than the first battery power threshold.

[0046] The above-mentioned high-voltage battery pack can be the core power source of new energy vehicles (such as electric vehicles and hybrid vehicles). It is usually composed of multiple battery modules connected in series with a voltage range of 300V to 800V (such as 400V or 800V).

[0047] The above-mentioned DC converter, i.e., DC-DC converter, can be a power electronic device used to convert the DC power (such as 400V or 800V) of a high-voltage battery pack into a low-voltage DC power (such as 12V or 24V), which can be used to charge lithium batteries and power low-voltage load devices (such as windows, seats, water pumps, valves, etc.).

[0048] The above lithium battery can be used as an auxiliary power supply for the low-voltage system to provide stable power for the vehicle-mounted load equipment. In the embodiment of the present application, the lithium battery can be a 12V lithium battery, which can power the low-voltage load equipment when the high-voltage battery pack is not working.

[0049] The above-mentioned vehicle control unit may include a vehicle domain controller, a body controller and a thermal management unit controller. Among them, the vehicle domain controller (Vehicle Control Unit, VCU) is the core control unit of the vehicle, responsible for coordinating and managing the various subsystems of the vehicle to ensure the coordinated operation of the vehicle system. The body controller (Body Control Module, BCM) is responsible for managing and controlling the vehicle's body electronic equipment and functions to ensure the safety, comfort and convenience of the vehicle. The thermal management unit controller (Thermal Management Unit Controller, THM) is responsible for managing and controlling the vehicle's thermal management system to ensure that the battery, motor, electronic equipment and other key components operate within an appropriate temperature range. The vehicle domain controller VCU, the body controller BCM, the thermal management unit controller THM, etc. can be interactively controlled through the CAN bus, and are not specifically limited here.

[0050] The above-mentioned load devices may include various low-voltage loads such as windows, seats, water pumps, valves, etc., and are controlled by the vehicle domain controller, body controller and thermal management unit controller in the vehicle control unit.

[0051] Figure 2 The flowchart of the vehicle control method provided by an embodiment of the present application is shown. Optionally, the method of the embodiment of the present application can be applied to the above Figure 2 The vehicle control system shown.

[0052] like Figure 2 As shown, a vehicle control method is applied to a vehicle control unit, and the method may include the following steps S201 to S204:

[0053] S201, when a high-voltage battery pack of a vehicle is in a powered-on state, in response to a high-voltage power-off instruction input by a user, obtaining a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off;

[0054] S202, controlling the vehicle to enter a low power consumption mode when the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold;

[0055] S203, when the vehicle is in a low power consumption mode, obtaining a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value;

[0056] S204. When the second load power value is less than or equal to the second discharge power value and the second battery state of charge value is greater than a preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off so that the lithium battery can power the load equipment, and the second battery power threshold is greater than the first battery power threshold.

[0057] In the vehicle control method of the embodiment of the present application, the vehicle control unit can obtain the first load power value of the load device, the first discharge power value of the lithium battery and the first battery state of charge value in response to the high-voltage power-off instruction input by the user when the high-voltage battery pack of the vehicle is in the power-on state, and control the vehicle to enter the low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than the preset first battery power threshold, and then obtain the second load power value of the load device, the second discharge power value of the lithium battery and the second battery state of charge value, and only when the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than the preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery can power the load device. In this way, in the embodiment of the present application, when the discharge capacity of the lithium battery cannot meet the power required by the load device, the vehicle can be controlled to enter the low power consumption mode to prohibit unnecessary operation of the load device and reduce the load power demand, thereby avoiding overcurrent failure of the lithium battery.

[0058] In S201 , the high-voltage power-off instruction may be used to instruct the high-voltage battery pack to power off.

[0059] The first load power value of the above-mentioned load device may be the sum of the first output power value of the DC converter and the second output power value of the lithium battery when the high-voltage battery pack of the vehicle is in a powered-on state.

[0060] The first discharge power value of the lithium battery may be a real-time discharge power value reflected by the battery cell temperature and the battery state of charge when the high-voltage battery pack of the vehicle is in a powered-on state.

[0061] The first battery state of charge value of the above-mentioned lithium battery may refer to the charging state of the lithium battery when the high-voltage battery pack of the vehicle is in a powered-on state, that is, the percentage of the current remaining power of the lithium battery.

[0062] In S202, the above-mentioned first load power value is greater than the first discharge power value, or the first battery state of charge value is less than the preset first battery power threshold, which means that the lithium battery cannot meet the power supply demand of the load device. The preset first battery power threshold, for example, can be 50% or 60%, and of course it can also be a battery power threshold set according to the actual demand of the lithium battery, which is not specifically limited here.

[0063] The above-mentioned control of the vehicle entering the low power consumption mode may, for example, be that the vehicle domain controller sends a low power consumption mode instruction to other controllers (such as a body controller and a thermal management unit controller, etc.), and each controller responds to the low power consumption mode instruction to shut down its load equipment and reduce power, thereby enabling the vehicle to enter the low power consumption mode.

[0064] In S203, the second load power value of the load device may be the sum of the first output power value of the DC converter and the second output power value of the lithium battery when the vehicle is in the low power consumption mode.

[0065] The second discharge power value of the lithium battery may be a real-time discharge power value reflected by the battery cell temperature and the battery state of charge when the vehicle is in a low power consumption mode.

[0066] The second battery state of charge value of the lithium battery may be a percentage of the current remaining power of the lithium battery when the vehicle is in a low power consumption mode.

[0067] In S204, the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than the preset second battery power threshold, which means that the lithium battery can meet the power supply demand of the load device. The second battery power threshold is greater than the first battery power threshold, and can be 90% or 95% by way of example, and can be set according to the actual needs of the user, and is not specifically limited here.

[0068] The above-mentioned control of the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, exemplarily, can be that the vehicle domain controller sends an exit instruction to other controllers (such as the body controller and the thermal management unit controller, etc.), and each controller responds to the exit instruction to start and operate the load equipment under it.

[0069] As an implementation of the present application, in order to avoid an overcurrent fault of the lithium battery when the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device, the above method may further include:

[0070] When the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device, obtaining a third discharge power value of the lithium battery;

[0071] When the third discharge power value is less than a preset discharge power threshold, the vehicle is controlled to enter a low power consumption mode.

[0072] The third discharge power value is a real-time discharge power value of the lithium battery reflected by the battery cell temperature and the battery charge state when the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device.

[0073] The above-mentioned discharge power threshold value can be a value set by the user according to actual needs, and is not limited to a fixed value, and is not specifically limited here.

[0074] In the embodiment of the present application, the situation where the third discharge power value is less than the preset discharge power threshold means that the lithium battery cannot meet the power supply demand of the load device. At this time, by controlling the vehicle to enter a low power consumption mode, unnecessary operation of the load device is prohibited, and the load power demand is reduced, thereby avoiding overcurrent failure of the lithium battery.

[0075] As another implementation of the present application, in order to power up the high-voltage battery pack, the above method may further include:

[0076] When the high-voltage battery pack is in a power-off state and the lithium battery is supplying power to the load device, a high-voltage power-on instruction input by a user is received, and the high-voltage power-on instruction is used to instruct the high-voltage battery pack to power on;

[0077] In response to the high-voltage power-on instruction, the high-voltage battery pack is controlled to be powered on, so that the high-voltage battery pack supplies power to the load device and the lithium battery in the powered-on state.

[0078] The above-mentioned high-voltage power-on instruction can be used to instruct the high-voltage battery pack to power on.

[0079] In some embodiments, before controlling the high-voltage battery pack to power on in response to the high-voltage power-on instruction, the method may further include:

[0080] Obtaining a fourth discharge power value of the lithium battery;

[0081] When the fourth discharge power value is less than a preset discharge power threshold, controlling the vehicle to enter a low power consumption mode;

[0082] In response to the high voltage power-on instruction, controlling the high voltage battery pack to power on may specifically include:

[0083] In response to the high-voltage power-on command, the high-voltage battery pack is controlled to be powered on and the vehicle is controlled to exit the low power consumption mode.

[0084] In an embodiment of the present application, when the high-voltage battery pack is in a power-off state and the lithium battery is powering a load device, a high-voltage power-on command input by the user can be received to control the high-voltage battery pack to be powered on, so that the high-voltage battery pack can power the load device and the lithium battery in the power-on state. This can not only prevent the lithium battery from being over-discharged when the battery is low, but the lithium battery no longer supplies power alone, reducing its charge and discharge frequency and depth, thereby extending its life.

[0085] In some embodiments, the above S201 may specifically include:

[0086] Acquiring a first output power value of a DC converter of the vehicle, where the DC converter is used to convert high-voltage DC power output by a high-voltage battery pack into low-voltage DC power;

[0087] Obtain a second output power value of the lithium battery;

[0088] The sum of the first output power value and the second output power value is determined as a first load power value of the load device.

[0089] The first output power value is the power value output by the DC converter.

[0090] The second output power value is the power value output by the lithium battery.

[0091] In an embodiment of the present application, based on the first output power value output by the DC converter and the second output power value output by the lithium battery, the sum of the two is determined as the first load power value of the load device, which can improve the accuracy of obtaining the first load power value of the load device.

[0092] In order to facilitate the understanding of the vehicle control method in the embodiment of the present application, the actual application process of the vehicle control method is described as follows:

[0093] like Figure 3 As shown, the vehicle architecture includes a high-voltage Pack (i.e., the above-mentioned high-voltage battery pack), DCDC (i.e., the above-mentioned DC converter), a 12V lithium battery and management system (i.e., the above-mentioned lithium battery), a vehicle domain controller VCU, a body controller BCM, a thermal management unit controller THM, etc. (equivalent to the above-mentioned vehicle control unit). The DCDC converter is a component that converts high-voltage DC power into low-voltage DC power. The high-voltage Pack supplies power to the 12V lithium battery through DCDC. The high-voltage Pack and the 12V lithium battery can provide energy to various control units and low-voltage load devices of the vehicle. The low-voltage load devices of the vehicle include windows, seats, water pumps, valves, and other low-voltage loads controlled by these controllers. The vehicle domain controller VCU, the body controller BCM, the thermal management unit controller THM, etc. can be interactively controlled through the CAN bus. The vehicle domain controller VCU controls each controller through low-power mode instructions to actively shut down its own load and reduce power.

[0094] The normal vehicle power-on process includes before high voltage power-on, during high voltage maintenance, low high voltage, and after high voltage power-off. The specific control process is as follows:

[0095] 1. When the high-voltage Pack of the vehicle is before high-voltage power-on, the DCDC does not work, and only the 12V lithium battery supplies power to the low-voltage load of the vehicle. The 12V lithium battery provides real-time discharge capacity according to the battery cell temperature and SOC. If the discharge capacity (equivalent to the above discharge power value) is lower than the threshold (that is, the above discharge power threshold), the vehicle enters low-power consumption mode, prohibits unnecessary low-voltage loads from working, and prevents the 12V lithium battery from discharging overcurrent.

[0096] 2. When the high voltage pack of the vehicle is in high voltage maintenance, the DCDC is already working, controlling the vehicle to exit the low power consumption mode, such as Figure 4 shown.

[0097] 3. When the vehicle detects that there is a need to power off high voltage, the load power is calculated first, load power = DCDC output power + 12V lithium battery output power. If the load power > 12V lithium battery discharge capacity, or the 12V lithium battery SOC (that is, the above-mentioned battery state of charge value) is lower than the battery power threshold (such as 50% or 60%), the high voltage is delayed, and the vehicle is controlled to enter low power consumption mode, waiting for the load power to decrease, until the load power ≤ 12V lithium battery discharge capacity and 12V lithium battery SOC ≥ threshold (such as 90% or 95%), then the vehicle's high voltage Pack is allowed to power off high voltage.

[0098] 4. After the high-voltage Pack is powered off, the DCDC does not work, and only the 12V lithium battery supplies power to the vehicle's low-voltage load. The 12V lithium battery provides real-time discharge capacity based on the battery cell temperature and SOC. If the discharge capacity is lower than the threshold, the vehicle enters low-power mode, prohibiting unnecessary low-voltage loads from working, and preventing the 12V lithium battery from discharging and overcurrent. Figure 5 shown.

[0099] Based on the vehicle control method provided in the above embodiment, the present application also provides a specific implementation of a vehicle control device. Please refer to the following embodiment.

[0100] like Figure 6 As shown, the vehicle control device 600 provided in the embodiment of the present application is applied to a vehicle control unit and may include the following modules: a first acquisition module 601 , a first control module 602 , a second acquisition module 603 and a second control module 604 .

[0101] A first acquisition module 601 is used to acquire a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value in response to a high-voltage power-off instruction input by a user when the high-voltage battery pack of the vehicle is in a powered-on state, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off;

[0102] The first control module 602 is used to control the vehicle to enter a low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than a preset first battery power threshold;

[0103] The second acquisition module 603 is used to acquire a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value when the vehicle is in a low power consumption mode;

[0104] The second control module 604 is used to control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off when the second load power value is less than or equal to the second discharge power value and the second battery charge state value is greater than a preset second battery power threshold, so that the lithium battery can power the load equipment, and the second battery power threshold is greater than the first battery power threshold.

[0105] In the vehicle control device of the embodiment of the present application, the vehicle control unit can, when the high-voltage battery pack of the vehicle is in the power-on state, respond to the high-voltage power-off instruction input by the user, obtain the first load power value of the load device, the first discharge power value of the lithium battery, and the first battery state of charge value, and control the vehicle to enter the low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than the preset first battery power threshold, and then obtain the second load power value of the load device, the second discharge power value of the lithium battery, and the second battery state of charge value. Only when the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than the preset second battery power threshold, the vehicle is controlled to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery can power the load device. In this way, in the embodiment of the present application, when the discharge capacity of the lithium battery cannot meet the power required by the load device, the vehicle can be controlled to enter the low power consumption mode to prohibit unnecessary work of the load device and reduce the load power demand, thereby avoiding overcurrent failure of the lithium battery.

[0106] As an implementation of the present application, in order to prevent an overcurrent fault of the lithium battery when the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device, the above-mentioned device 600 may further include:

[0107] A third acquisition module is used to acquire a third discharge power value of the lithium battery when the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device;

[0108] The third control module is used to control the vehicle to enter a low power consumption mode when the third discharge power value is less than a preset discharge power threshold.

[0109] As another implementation of the present application, in order to power up the high-voltage battery pack, the device 600 may further include:

[0110] A receiving module, used to receive a high-voltage power-on instruction input by a user when the high-voltage battery pack is in a power-off state and the lithium battery is supplying power to the load device, the high-voltage power-on instruction being used to instruct the high-voltage battery pack to power on;

[0111] The fourth control module is used to control the high-voltage battery pack to power on in response to the high-voltage power-on instruction, so that the high-voltage battery pack can supply power to the load device and the lithium battery in the powered-on state.

[0112] In some embodiments, the apparatus 600 may further include:

[0113] A fourth acquisition module, used to acquire a fourth discharge power value of the lithium battery when the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device;

[0114] a fifth control module, configured to control the vehicle to enter a low power consumption mode when the fourth discharge power value is less than a preset discharge power threshold;

[0115] The fourth control module is specifically used to control the high-voltage battery pack to be powered on and control the vehicle to exit the low power consumption mode in response to the high-voltage power-on instruction.

[0116] In some embodiments, the first acquisition module 601 may specifically include:

[0117] A first acquisition unit, used to acquire a first output power value of a DC converter of the vehicle, where the DC converter is used to convert high-voltage DC power output by a high-voltage battery pack into low-voltage DC power;

[0118] A first acquisition unit, used to acquire a second output power value of the lithium battery;

[0119] The determining unit is used to determine the sum of the first output power value and the second output power value as the first load power value of the load device.

[0120] Figure 7 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0121] The electronic device may include a processor 701 and a memory 702 storing computer program instructions.

[0122] Specifically, the processor 701 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0123] The memory 702 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 702 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 702 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 702 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 702 is a non-volatile solid-state memory.

[0124] In certain embodiments, the memory 702 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present disclosure.

[0125] The processor 701 implements any one of the vehicle control methods in the above embodiments by reading and executing computer program instructions stored in the memory 702 .

[0126] In one example, the electronic device may further include a communication interface 703 and a bus 710. Figure 7 As shown, the processor 701, the memory 702, and the communication interface 703 are connected via a bus 710 and communicate with each other.

[0127] The communication interface 703 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0128] Bus 710 includes hardware, software or both, and the parts of electronic equipment are coupled to each other.For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 710 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0129] The electronic device can execute the vehicle control method in the embodiment of the present application, thereby realizing the combination Figure 2 and Figure 6 A vehicle control method and device are described.

[0130] In addition, in combination with the vehicle control method in the above embodiments, the embodiment of the present application can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the vehicle control methods in the above embodiments is implemented.

[0131] In combination with the vehicle control method in the above embodiments, an embodiment of the present application may provide a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes any one of the vehicle control methods above.

[0132] In combination with the vehicle control method in the above embodiment, the embodiment of the present application can provide a vehicle for implementation. The vehicle includes at least one of the following: the vehicle control device as described above; the vehicle control system as described above; the electronic device as described above; the computer-readable storage medium as described above; the computer program product as described above.

[0133] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0134] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0135] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0136] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0137] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A vehicle control method, characterized in that: Applied to a vehicle control unit, the method comprises: When the high-voltage battery pack of the vehicle is in a powered-on state, in response to a high-voltage power-off instruction input by a user, obtaining a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off; When the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold, controlling the vehicle to enter a low power consumption mode; When the vehicle is in the low power consumption mode, obtaining a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value; When the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than a preset second battery power threshold, the vehicle is controlled to exit the low power consumption mode and the high-voltage battery pack is powered off so that the lithium battery can power the load device, and the second battery power threshold is greater than the first battery power threshold.

2. The method according to claim 1, characterized in that The method further comprises: When the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device, obtaining a third discharge power value of the lithium battery; When the third discharge power value is less than a preset discharge power threshold, the vehicle is controlled to enter the low power consumption mode.

3. The method according to claim 1, characterized in that The method further comprises: When the high-voltage battery pack is in a power-off state and the lithium battery supplies power to the load device, receiving a high-voltage power-on instruction input by the user, wherein the high-voltage power-on instruction is used to instruct the high-voltage battery pack to power on; In response to the high-voltage power-on instruction, the high-voltage battery pack is controlled to be powered on, so that the high-voltage battery pack supplies power to the load device and the lithium battery in the powered-on state.

4. The method according to claim 1, characterized in that: The obtaining of a first load power value of the load device includes: Acquiring a first output power value of a DC converter of the vehicle, wherein the DC converter is used to convert high-voltage DC power output by the high-voltage battery pack into low-voltage DC power; Obtaining a second output power value of the lithium battery; The sum of the first output power value and the second output power value is determined as a first load power value of the load device.

5. A vehicle control device, characterized in that: Applied to a vehicle control unit, the device comprises: A first acquisition module, configured to acquire, when the high-voltage battery pack of the vehicle is in a powered-on state, a first load power value of a load device, a first discharge power value of a lithium battery, and a first battery state of charge value in response to a high-voltage power-off instruction input by a user, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off; A first control module, configured to control the vehicle to enter a low power consumption mode when the first load power value is greater than the first discharge power value or the first battery state of charge value is less than a preset first battery power threshold; A second acquisition module, configured to acquire, when the vehicle is in the low power consumption mode, a second load power value of the load device, a second discharge power value of the lithium battery, and a second battery state of charge value; A second control module is used to control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off when the second load power value is less than or equal to the second discharge power value and the second battery state of charge value is greater than a preset second battery power threshold, so that the lithium battery can power the load device, and the second battery power threshold is greater than the first battery power threshold.

6. A vehicle control system, characterized in that: The system comprises: High-voltage battery pack, used to output high-voltage direct current; a DC converter, connected to the high-voltage battery pack, and configured to convert the high-voltage DC power output by the high-voltage battery pack into a low-voltage DC power; A lithium battery connected to the DC converter for outputting low-voltage DC power; A vehicle control unit is connected to the DC converter, the lithium battery and the load device, and is used to obtain a first load power value of the load device, a first discharge power value of the lithium battery and a first battery state of charge value in response to a high-voltage power-off instruction input by a user when the high-voltage battery pack is in a powered-on state, wherein the high-voltage power-off instruction is used to instruct the high-voltage battery pack to power off; when the first load power value is greater than the first discharge power value, or the first battery state of charge value is less than a preset first battery power threshold, control the vehicle to enter a low power consumption mode; when the vehicle is in the low power consumption mode, obtain a second load power value of the load device, a second discharge power value and a second battery state of charge value of the lithium battery; when the second load power value is less than or equal to the second discharge power value, and the second battery state of charge value is greater than a preset second battery power threshold, control the vehicle to exit the low power consumption mode and control the high-voltage battery pack to power off, so that the lithium battery supplies power to the load device, and the second battery power threshold is greater than the first battery power threshold.

7. An electronic device, characterized in that: The device comprises: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, the vehicle control method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the vehicle control method according to any one of claims 1 to 5 is implemented.

9. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the vehicle control method as described in any one of claims 1 to 5.

10. A vehicle, characterized in that: Include at least one of the following: The vehicle control device as claimed in claim 5; The vehicle control system as claimed in claim 6; The electronic device as claimed in claim 7; The computer readable storage medium of claim 8; A computer program product as claimed in claim 9.

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