Control method and device for slow charging of automobile and controller

Abstract

The invention discloses an automobile slow charging control method and device and a controller, and belongs to the technical field of new energy automobiles. The method comprises the steps that a target value of a slow charging and ignition state untrusted variable is determined according to a charging gun connection state and a slow charging and ignition state variable, and the target value of the slow charging and ignition state untrusted variable is used for indicating whether the slow charging and ignition state variable is trusted or not; if the target value, the charging gun connection state and the slow charging ignition state variable meet the high-voltage system power-on condition, the high-voltage system of the vehicle is controlled to be powered on; a charging starting instruction is sent to a vehicle-mounted charger, and the charging starting instruction is used for instructing the vehicle-mounted charger to convert alternating current transmitted by a charging pile into direct current so as to slowly charge the vehicle. According to the invention, unexpected power-on of the high-voltage system caused by false triggering of the slow-charging ignition signal can be avoided.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a control method, device and controller for slow charging of a vehicle. Background Art

[0002] With the rapid development of new energy vehicle technology, the market share of new energy vehicles has greatly increased. For new energy vehicles, slow charging is a very common working condition.

[0003] Under slow charging conditions, after the OBC (On Board Charger) detects that the charging gun is fully connected to the charging pile, the OBC sends a slow charging ignition signal to the VCU (Vehicle Control Unit). After receiving the slow charging ignition signal, the vehicle control unit controls the vehicle's high-voltage system to power on. After charging is completed, the VCU controls the vehicle's high-voltage system to power off.

[0004] However, if the slow charging ignition signal is triggered by mistake, it may cause the vehicle's high-voltage system to be abnormally powered on when it should be powered off. Summary of the invention

[0005] The embodiments of the present application provide a control method, device and controller for slow charging of an automobile, which can avoid abnormal power-on problems caused by the erroneous triggering of the slow charging ignition signal. The technical solution is as follows:

[0006] In a first aspect, a method for controlling slow charging of a vehicle is provided, the method comprising:

[0007] Determine a target value of an untrusted variable of a slow charging and ignition state according to a charging gun connection state and a slow charging and ignition state variable, wherein the target value of the untrusted variable of the slow charging and ignition state is used to indicate whether the slow charging and ignition state variable is trustworthy;

[0008] If the target value, the charging gun connection state, and the slow charging ignition state variable meet the high-voltage system power-on condition, controlling the high-voltage system of the vehicle to power on;

[0009] A charging start instruction is sent to the on-board charger, wherein the charging start instruction is used to instruct the on-board charger to convert the alternating current transmitted by the charging pile into direct current so as to perform slow charging on the vehicle.

[0010] In a possible implementation, the target value is 0 or 1;

[0011] When the target value is 0, the untrusted variable of the slow charge ignition state indicates that the slow charge ignition state variable is credible;

[0012] When the target value is 1, the slow charge ignition state untrustworthy variable indicates that the slow charge ignition state variable is untrustworthy.

[0013] In a possible implementation, determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes:

[0014] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 1, it is determined that the target value of the slow charging ignition state untrustworthy variable is 1.

[0015] In a possible implementation, determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes:

[0016] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0.

[0017] In a possible implementation, determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes:

[0018] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0019] In a possible implementation, determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes:

[0020] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0021] In a possible implementation, if the target value, the charging gun connection state, and the slow charging ignition state variable meet the high-voltage system power-on condition, controlling the high-voltage system of the vehicle to power on includes:

[0022] If the target value is 0, the charging gun connection state is connected, and the value of the slow charging ignition state variable is 1, it is determined that the high-voltage system power-on condition is met, and the high-voltage system of the vehicle is controlled to be powered on.

[0023] In a second aspect, a control device for slow charging of an automobile is provided, the device comprising:

[0024] A determination module, used to determine a target value of an untrusted variable of a slow charging and ignition state according to a charging gun connection state and a slow charging and ignition state variable, wherein the target value of the untrusted variable of the slow charging and ignition state is used to indicate whether the slow charging and ignition state variable is credible;

[0025] A control module, used for controlling the power-on of the high-voltage system of the vehicle if the target value, the connection status of the charging gun and the slow-charging ignition status variable meet the power-on conditions of the high-voltage system; and sending a charging start instruction to the on-board charger, wherein the charging start instruction is used to instruct the on-board charger to convert the alternating current transmitted by the charging pile into direct current to perform slow charging on the vehicle.

[0026] In a possible implementation, the target value is 0 or 1;

[0027] When the target value is 0, the untrusted variable of the slow charge ignition state indicates that the slow charge ignition state variable is credible;

[0028] When the target value is 1, the slow charge ignition state untrustworthy variable indicates that the slow charge ignition state variable is untrustworthy.

[0029] In a possible implementation, the determining module is used to:

[0030] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 1, it is determined that the target value of the slow charging ignition state untrustworthy variable is 1.

[0031] In a possible implementation, the determining module is used to:

[0032] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0.

[0033] In a possible implementation, the determining module is used to:

[0034] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0035] In a possible implementation, the determining module is used to:

[0036] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0037] In a possible implementation, the control module is used to:

[0038] If the target value is 0, the charging gun connection state is connected, and the value of the slow charging ignition state variable is 1, it is determined that the high-voltage system power-on condition is met, and the high-voltage system of the vehicle is controlled to be powered on.

[0039] In a third aspect, a vehicle controller is provided, comprising a processing unit and a storage unit, wherein the storage unit stores at least one instruction, and the instruction is loaded and executed by the processing unit to implement the operations performed by the vehicle slow charging control method as described in the first aspect and its possible implementations.

[0040] In a fourth aspect, a computer-readable storage medium is provided, wherein at least one instruction is stored in the computer-readable storage medium, and the instruction is loaded and executed by a controller to implement the operations performed by the method for controlling slow charging of a vehicle as described in the first aspect and its possible implementations.

[0041] In a fifth aspect, a computer program product is provided, the computer program product comprising at least one instruction, the instruction being loaded and executed by a processor to implement the operations performed by the method for controlling slow charging of a vehicle as described in the first aspect and its possible implementations.

[0042] The beneficial effects of the technical solution provided by this application are:

[0043] In the technical solution provided in the present application, an untrusted variable of the slow charging ignition state is introduced. The target value of the untrusted variable of the slow charging ignition state is used to indicate whether the slow charging ignition state variable is credible, that is, the slow charging ignition state variable is checked through the untrusted variable of the slow charging ignition state. Even if the slow charging ignition state variable is triggered by mistake, the untrusted variable of the slow charging ignition state can be used to make the mistakenly triggered slow charging ignition state variable untrustworthy, thereby avoiding the abnormal power-on problem caused by the mistaken triggering of the slow charging ignition signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 This is a flow chart of a method for controlling slow charging of a vehicle provided in an embodiment of the present application;

[0046] Figure 2 This is a schematic diagram of high voltage power-on conditions under a slow charging condition of a vehicle provided in an embodiment of the present application;

[0047] Figure 3 It is a schematic diagram of a control device for slow charging of a car provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] To facilitate understanding of the embodiments of the present application, the terms involved in the embodiments of the present application are introduced below:

[0049] slow charge

[0050] Slow charging of new energy vehicles, also known as "AC slow charging", refers to the method of using AC (Alternating Current) to convert electrical energy into DC (Direct Current) suitable for power batteries through OBC (On Board Charger) for charging.

[0051] OBC

[0052] OBC is a charging device fixedly installed inside the vehicle, responsible for converting the AC power provided by the power grid or charging pile into DC power to charge the power battery.

[0053] With the rapid development of new energy vehicle technology, the market share of new energy vehicles has greatly increased. For new energy vehicles, slow charging is a very common working condition. Under slow charging conditions, after OBC detects that the charging gun is fully connected to the charging pile, the on-board charger sends a slow charging ignition signal to the VCU. After the VCU receives the slow charging ignition signal, it sets the slow charging ignition state variable to 1 and wakes up the BMS (Battery Management System). After being awakened, the BMS performs a self-test, which includes detecting battery voltage, temperature, insulation status, etc. After the self-test passes, the BMS closes the main negative relay and the pre-charge relay in turn to start pre-charging. When the pre-charge voltage is completed, the BMS closes the main positive relay and disconnects the pre-charge relay to complete the power-on of the high-voltage system. Then, the VCU sends a charging start instruction to the OBC, and the OBC starts to convert the AC power of the charging pile or the power grid into DC power to charge the power battery. After charging is completed, the OBC sends a slow charging completion message to the VCU, and the VCU sets the slow charging ignition state variable to 0 and controls the vehicle's high-voltage system to power off.

[0054] However, if the slow charging ignition signal is triggered by mistake, and the slow charging ignition state variable is still 1 after the slow charging is completed, the vehicle's high voltage system may be unable to power off. It is also possible that the slow charging ignition state variable has been mistakenly triggered to 1 when the charging gun is not fully connected, causing the entire vehicle's high voltage to be unexpectedly powered on.

[0055] Based on this, an embodiment of the present application provides a control method for slow charging of an automobile, in which an untrusted variable of the slow charging ignition state is introduced, and the target value of the untrusted variable of the slow charging ignition state is used to indicate whether the slow charging ignition state variable is credible, that is, the slow charging ignition state variable is checked through the untrusted variable of the slow charging ignition state, and even if the slow charging ignition state variable is triggered by mistake, the untrusted variable of the slow charging ignition state can be used to make the mistakenly triggered slow charging ignition state variable untrustworthy, thereby avoiding the abnormal power-on problem caused by the mistaken triggering of the slow charging ignition state variable.

[0056] The following is a description of the control method for slow charging of a car provided in an embodiment of the present application in conjunction with the accompanying drawings. The control method for slow charging of a car provided in an embodiment of the present application can be implemented by a VCU, see Figure 1 , the method may include the following steps:

[0057] Step 101: Determine a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable.

[0058] Among them, the target value of the untrusted variable of the slow charging and ignition state is used to indicate whether the slow charging and ignition state variable is credible.

[0059] In implementation, the VCU can maintain the values ​​of two variables: the slow charging ignition state variable and the slow charging ignition state untrusted variable. Among them, the target value of the slow charging ignition state untrusted variable can be determined by the VCU according to the charging gun connection status and the value of the slow charging ignition state variable. When the target value of the slow charging ignition state untrusted variable is 0, the slow charging ignition state untrusted variable indicates that the slow charging ignition state variable is credible; when the target value of the slow charging ignition state untrusted variable is 1, the slow charging ignition state untrusted variable indicates that the slow charging ignition state variable is untrustworthy.

[0060] The following is an explanation of the target value for determining the untrustworthy variable of the slow charge ignition state:

[0061] When the charging gun connection state is not connected and the value of the slow charge ignition state variable is 1, since the charging gun is not connected, it means that the high voltage system cannot be powered on at this time, so the target value of the slow charge ignition state untrustworthy variable is determined to be 1, indicating that the slow charge ignition state variable is untrustworthy. This situation may occur after the slow charge is completed and the charging gun is unplugged, and the slow charge ignition signal is triggered by mistake, causing the VCU to set the slow charge ignition state variable to 1. At this time, the value of the slow charge ignition state variable is 1, which is abnormal and untrustworthy.

[0062] If the charging gun connection status is not connected and the value of the slow charge ignition state variable is 0, the target value of the slow charge ignition state untrustworthy variable is determined to be 0. In this case, the charging gun may be connected, but the BMS has not completed the self-check, or the slow charge ignition signal has not been sent to the VCU. At this time, the value of the slow charge ignition state variable is 0, which is normal and credible.

[0063] If the charging gun connection status is connected, slow charging has been completed, and after the slow charging is completed, the value of the slow charging ignition state variable is 1 for the first duration, then the target value of the slow charging ignition state untrustworthy variable is determined to be 1. This situation may occur when the slow charging has been completed, but the slow charging ignition state variable has not been set to 0 for a long time. At this time, the value of the slow charging ignition state variable is 1, which is abnormal and untrustworthy. Among them, the first duration can be configured according to actual needs, for example, the first duration is 1 second.

[0064] At the beginning of slow charging, if the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0. This is a normal situation, and the value of the slow charging ignition state variable is 1, which is normal and credible.

[0065] If the charging gun connection state is connected and the value of the slow charge ignition state variable is 0, the target value of the slow charge ignition state untrustworthy variable is determined to be 0. This situation is normal, and the value of the slow charge ignition state variable of 0 is normal and credible.

[0066] In addition, after the target value of the untrusted variable in the slow charge ignition state is 1, the target value will be set to 0 only when the reset condition is met. The reset condition can be any of the following conditions:

[0067] Reset condition 1:

[0068] The charging gun connection signal is a rising edge, that is, the connection status of the charging gun is connected.

[0069] Reset condition 2:

[0070] An intelligent power replenishment request is received, where the intelligent power replenishment request is actively triggered by a user.

[0071] Reset condition three:

[0072] The 15 electrical signal is detected, that is, the high voltage system is powered on.

[0073] When the pre-charge voltage is reached, the BMS closes the main positive relay and disconnects the pre-charge relay to complete the power-on of the high-voltage system. Then, the VCU sends a charging start instruction to the OBC, and the OBC starts to convert the AC power of the charging pile or the power grid into DC power to charge the power battery. After charging is completed, the OBC sends a slow charge completion message to the VCU, and the VCU sets the slow charge ignition state variable to 0 and controls the vehicle's high-voltage system to power off.

[0074] Step 102: If the target value, the charging gun connection state, and the slow charging ignition state variables meet the high-voltage system power-on condition, the high-voltage system of the vehicle is controlled to be powered on.

[0075] During implementation, if the charging gun connection status is connected, the value of the slow charging ignition status variable is 1, the target value of the slow charging ignition status untrusted variable is 0, and the VCU communicates normally with the BMS, it is determined that the high-voltage system power-on conditions are met, and the vehicle's high-voltage system is controlled to power on.

[0076] See also Figure 2 , shows the comparison between the power-on conditions of the high-voltage system in the related art and the power-on conditions of the high-voltage system in the embodiment of the present application under the slow charging condition. The power-on conditions of the high-voltage system in the related art are "charging gun connected, slow charging ignition state variable = 1, and VCU and BMS communicate normally". Compared with the related art, the technical solution provided by the embodiment of the present application adds an additional condition "the target value of the untrusted variable of the slow charging ignition state is 0", that is, "charging gun connected, slow charging ignition state variable = 1, VCU and BMS communicate normally, and the untrusted variable of the slow charging ignition state = 0". Through this additional condition, the problem of unexpected power-on of the high-voltage system or inability to power off caused by the false triggering of the slow charging ignition signal can be avoided.

[0077] Step 103: Send a charging start instruction to the on-board charger.

[0078] Among them, the charging start instruction is used to instruct the on-board charger to convert the AC power transmitted by the charging pile into DC power so as to slowly charge the vehicle.

[0079] In implementation, after the high-voltage power-up is completed, the VCU sends a charging start instruction to the OBC, and the OBC begins to convert the AC power of the charging pile or the power grid into DC power to charge the power battery.

[0080] After slow charging is completed, OBC sends a slow charging completion message to VCU, VCU sets the slow charging ignition state variable to 0, and controls the vehicle's high-voltage system to power off.

[0081] In addition, in the technical solution provided in the embodiment of the present application, a new way of powering off the high-voltage system is introduced on the basis of the relevant technology:

[0082] When the slow charging ignition untrusted variable is set to 1 and lasts for the second time, the high voltage system is directly controlled to be powered off. The second time can be configured according to actual needs, and the embodiment of the present application does not limit this.

[0083] The advantages of adding the untrusted variable of the slow charging ignition signal are as follows: Under normal charging conditions, after charging is completed, if the slow charging ignition signal is abnormal, the untrusted variable of the slow charging ignition signal can make the vehicle power off normally; when the high voltage of the vehicle is not connected, the slow charging ignition signal is sent by mistake, and the high voltage system of the vehicle will not be powered on; when the vehicle is in the high voltage system power-on condition, due to the existence of reset conditions and delays, it will not cause abnormal power off; due to the existence of reset conditions, the untrusted variable of the slow charging ignition signal will not affect the normal use of charging and high voltage power on and off.

[0084] In the technical solution provided in the present application, an untrusted variable of the slow charging ignition state is introduced. The target value of the untrusted variable of the slow charging ignition state is used to indicate whether the slow charging ignition state variable is credible, that is, the slow charging ignition state variable is checked through the untrusted variable of the slow charging ignition state. Even if the slow charging ignition state variable is triggered by mistake, the untrusted variable of the slow charging ignition state can be used to make the mistakenly triggered slow charging ignition state variable untrustworthy, thereby avoiding the abnormal power-on problem caused by the mistaken triggering of the slow charging ignition state variable.

[0085] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0086] The present application also provides a control device for slow charging of a car. Figure 3 As shown, the device may include a determination module 310 and a control module 320, wherein:

[0087] A determination module 310, configured to determine a target value of an untrusted variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable, wherein the target value of the untrusted variable of the slow charging ignition state is used to indicate whether the slow charging ignition state variable is credible;

[0088] The control module 320 is used to control the power-on of the high-voltage system of the vehicle if the target value, the connection status of the charging gun and the slow-charging ignition status variable meet the power-on conditions of the high-voltage system; and send a charging start instruction to the on-board charger, wherein the charging start instruction is used to instruct the on-board charger to convert the alternating current transmitted by the charging pile into direct current to slowly charge the vehicle.

[0089] In a possible implementation, the target value is 0 or 1;

[0090] When the target value is 0, the untrusted variable of the slow charge ignition state indicates that the slow charge ignition state variable is credible;

[0091] When the target value is 1, the slow charge ignition state untrustworthy variable indicates that the slow charge ignition state variable is untrustworthy.

[0092] In a possible implementation, the determining module 310 is configured to:

[0093] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 1, it is determined that the target value of the slow charging ignition state untrustworthy variable is 1.

[0094] In a possible implementation, the determining module 310 is configured to:

[0095] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0.

[0096] In a possible implementation, the determining module 310 is used to:

[0097] If the charging gun connection state is connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0098] In a possible implementation, the determining module 310 is configured to:

[0099] If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

[0100] In a possible implementation, the control module 320 is used to:

[0101] If the target value is 0, the charging gun connection state is connected, and the value of the slow charging ignition state variable is 1, it is determined that the high-voltage system power-on condition is met, and the high-voltage system of the vehicle is controlled to be powered on.

[0102] In the technical solution provided in the present application, an untrusted variable of the slow charging ignition state is introduced. The target value of the untrusted variable of the slow charging ignition state is used to indicate whether the slow charging ignition state variable is credible, that is, the slow charging ignition state variable is checked through the untrusted variable of the slow charging ignition state. Even if the slow charging ignition state variable is triggered by mistake, the untrusted variable of the slow charging ignition state can be used to make the mistakenly triggered slow charging ignition state variable untrustworthy, thereby avoiding the abnormal power-on problem caused by the mistaken triggering of the slow charging ignition state variable.

[0103] It should be noted that: the control device for slow charging of automobile provided in the above embodiment only uses the division of the above functional modules as an example when performing slow charging control of automobile. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the controller is divided into different functional modules to complete all or part of the functions described above. In addition, the control device for slow charging of automobile provided in the above embodiment and the embodiment of the control method for slow charging of automobile belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0104] In an exemplary embodiment, a vehicle controller is also provided, and the vehicle controller may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The vehicle controller may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The vehicle controller may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state; the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the vehicle controller may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some examples, the vehicle controller may also include an AI (Artificial Intelligence) processor, which can be used to process computing operations related to machine learning.

[0105] In an exemplary embodiment, a computer-readable storage medium is also provided, such as a memory including instructions, and the above instructions can be executed by the vehicle controller to complete the control method of slow charging of the vehicle in the above embodiment. The computer-readable storage medium can be non-transient. For example, the computer-readable storage medium can be ROM (Read-Only Memory), RAM (Random Access Memory), CD-ROM (Compact Disc Read-Only Memory), magnetic tape, floppy disk and optical data storage device, etc.

[0106] In the description of the application embodiments, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0107] It is to be understood that in this application, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0108] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0109] It can be further understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0110] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0111] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present application, it should not be understood as requiring the operations to be performed in the specific order or serial order shown, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0112] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the scheme disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and embodiments are only considered as exemplary, and the true scope and spirit of the present application are indicated by the scope of rights.

[0113] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the scope of the appended claims.

[0114] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals (including but not limited to signals transmitted between user terminals and other devices, etc.) involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0115] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0116] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for controlling slow charging of a car, characterized in that: The method comprises: Determine a target value of an untrusted variable of a slow charging and ignition state according to a charging gun connection state and a slow charging and ignition state variable, wherein the target value of the untrusted variable of the slow charging and ignition state is used to indicate whether the slow charging and ignition state variable is trustworthy; If the target value, the charging gun connection state, and the slow charging ignition state variable meet the high-voltage system power-on condition, controlling the high-voltage system of the vehicle to power on; A charging start instruction is sent to the on-board charger, wherein the charging start instruction is used to instruct the on-board charger to convert the alternating current transmitted by the charging pile into direct current so as to perform slow charging on the vehicle.

2. The control method according to claim 1, characterized in that: The target value is 0 or 1; When the target value is 0, the untrusted variable of the slow charge ignition state indicates that the slow charge ignition state variable is credible; When the target value is 1, the slow charge ignition state untrustworthy variable indicates that the slow charge ignition state variable is untrustworthy.

3. The method according to claim 2, characterized in that The step of determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes: If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 1, it is determined that the target value of the slow charging ignition state untrustworthy variable is 1.

4. The control method according to claim 2, characterized in that: The step of determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes: If the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0.

5. The control method according to claim 2, characterized in that: The step of determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes: If the charging gun connection state is connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

6. The control method according to claim 2, characterized in that: The step of determining a target value of an untrustworthy variable of a slow charging ignition state according to a charging gun connection state and a slow charging ignition state variable includes: If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 0, it is determined that the target value of the slow charging ignition state untrustworthy variable is 0.

7. The control method according to any one of claims 2 to 6, characterized in that: If the target value, the charging gun connection state, and the slow charging ignition state variable meet the high-voltage system power-on condition, controlling the high-voltage system of the vehicle to power on includes: If the target value is 0, the charging gun connection state is connected, and the value of the slow charging ignition state variable is 1, it is determined that the high-voltage system power-on condition is met, and the high-voltage system of the vehicle is controlled to be powered on.

8. A control device for slow charging of a car, characterized in that: The device comprises: A determination module, used to determine a target value of an untrusted variable of a slow charging and ignition state according to a charging gun connection state and a slow charging and ignition state variable, wherein the target value of the untrusted variable of the slow charging and ignition state is used to indicate whether the slow charging and ignition state variable is credible; A control module, used for controlling the power-on of the high-voltage system of the vehicle if the target value, the connection status of the charging gun and the slow-charging ignition status variable meet the power-on conditions of the high-voltage system; and sending a charging start instruction to the on-board charger, wherein the charging start instruction is used to instruct the on-board charger to convert the alternating current transmitted by the charging pile into direct current to perform slow charging on the vehicle.

9. The control device according to claim 8, characterized in that: The target value is 0 or 1; When the target value is 0, the untrusted variable of the slow charge ignition state indicates that the slow charge ignition state variable is credible; When the target value is 1, the slow charge ignition state untrustworthy variable indicates that the slow charge ignition state variable is untrustworthy.

10. The control device according to claim 9, characterized in that: The determining module is used to: If the charging gun connection state is not connected and the value of the slow charging ignition state variable is 1, it is determined that the target value of the slow charging ignition state untrustworthy variable is 1.

11. The control device according to claim 9, characterized in that: The determining module is used to: If the charging gun connection state is connected and the value of the slow charging ignition state variable is 1, the target value of the slow charging ignition state untrustworthy variable is determined to be 0.

12. The control device according to any one of claims 8 to 11, characterized in that: The control module is used for: If the target value is 0, the charging gun connection state is connected, and the value of the slow charging ignition state variable is 1, it is determined that the high-voltage system power-on condition is met, and the high-voltage system of the vehicle is controlled to be powered on.

13. A vehicle controller, characterized in that: The vehicle controller includes a processing unit and a storage unit, wherein the storage unit stores at least one instruction, and the instruction is loaded and executed by the processing unit to implement the operation performed by the vehicle slow charging control method as described in any one of claims 1 to 7.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one instruction, which is loaded and executed by the controller to implement the operations performed by the vehicle slow charging control method as described in any one of claims 1 to 7.

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