CN113386622A

CN113386622A - Vehicle control method and device and vehicle

Info

Publication number: CN113386622A
Application number: CN202110729157.8A
Authority: CN
Inventors: 乔旭; 王阳; 于广超
Original assignee: Mobai Beijing Information Technology Co Ltd
Current assignee: Mobai Beijing Information Technology Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-14
Anticipated expiration: 2041-06-29
Also published as: CN113386622B

Abstract

The embodiment of the application provides a vehicle control method, a device and a vehicle, wherein the vehicle control method comprises the following steps: acquiring first state information of a battery pack of the vehicle, and acquiring second state information of an environment where the vehicle is located; obtaining a reference discharge current value of the battery pack according to the first state information; obtaining a target discharge current value according to the second state information and the reference discharge current value; and controlling the output current of the battery pack to drive the vehicle to run according to the target discharge current value.

Description

Vehicle control method and device and vehicle

Technical Field

The present disclosure relates to the field of vehicle technologies, and in particular, to a vehicle control method and apparatus, and a vehicle.

Background

Currently, on electrically driven vehicles, such as electric bicycles, the maximum discharge current of the battery pack used by the vehicle during riding is generally fixed. Therefore, under certain specific working conditions, the voltage of the battery pack can be pulled down for protection, so that when the heavy-load starting of the vehicle needs a large discharge current, the power supply of the vehicle is insufficient, the riding power is insufficient, and even the power is cut off.

Disclosure of Invention

It is an object of the embodiments of the present disclosure to provide a vehicle control method to solve the above-described problems.

According to a first aspect of the present disclosure, there is provided an embodiment of a vehicle control method, applied to a vehicle, including:

acquiring first state information of a battery pack of the vehicle, and acquiring second state information of an environment where the vehicle is located;

obtaining a reference discharge current value of the battery pack according to the first state information;

obtaining a target discharge current value according to the second state information and the reference discharge current value;

and controlling the output current of the battery pack to drive the vehicle to run according to the target discharge current value.

Optionally, the vehicle comprises a first controller and a second controller;

the obtaining a reference discharge current value of the battery pack according to the first state information includes:

the first controller obtains the reference discharge current value according to the first state information and sends the reference discharge current value to the second controller;

the obtaining a target discharge current value according to the second state information and the reference discharge current value includes:

and the second controller obtains the target discharge current value according to the second state information and the reference discharge current value.

Optionally, the first state information includes a model, a state of charge, and an operating temperature of the battery pack;

and acquiring the reference discharge current value matched with the charge state and the working temperature from a preset discharge current limit table corresponding to the model.

Optionally, the obtaining a target discharge current value according to the second state information and the reference discharge current value includes:

and under the condition that the reference discharge current value meets a first preset condition and the second state information meets a second preset condition, obtaining the target discharge current value according to the reference discharge current value.

Optionally, the second state information includes a gradient value of a road surface on which the vehicle is traveling;

the obtaining the target discharge current value according to the reference discharge current value includes:

calculating a difference value between the reference discharge current value and a preset calibration value as the target discharge current when the reference discharge current value is greater than a first threshold and not greater than a second threshold, wherein the preset calibration value is not greater than the first threshold; and the number of the first and second groups,

setting the target discharge current value as a preset discharge current value in a case where the reference discharge current value is not less than the second threshold value and the gradient value is less than a preset gradient threshold value; and the number of the first and second groups,

and under the condition that the reference discharge current value is not less than a second threshold value and the gradient value is not less than the preset gradient threshold value, acquiring a product of the gradient value and a preset coefficient, and calculating a sum of the preset discharge current value and the product as the target discharge current value.

Optionally, the method further comprises:

and obtaining a target charging current value from a preset charging current limit table according to the first state information.

Optionally, after obtaining the target charging current value, the method further comprises:

and under the condition that a preset charging condition is met, charging the battery pack by using a charging current not greater than the target charging current value.

Optionally, the controlling the battery pack output current to drive the vehicle to run according to the target discharge current value includes:

and controlling the battery pack to output a discharge current not exceeding the target discharge current value so as to drive the vehicle to run.

According to a second aspect of the present disclosure, there is provided an embodiment of a vehicle control apparatus, including:

the state information acquisition module is used for acquiring first state information of a battery pack of the vehicle and acquiring second state information of a road surface on which the vehicle runs;

a reference discharge current value obtaining module, configured to obtain a reference discharge current value of the battery pack according to the first state information;

a target discharge current value obtaining module, configured to obtain a target discharge current value according to the second state information and the reference discharge current value;

and the control module is used for controlling the battery pack to output current to drive the vehicle to run according to the target discharge current value.

According to a third aspect of the present disclosure, there is provided an embodiment of a vehicle comprising the apparatus according to the second aspect of the present disclosure; alternatively, the first and second electrodes may be,

the vehicle includes:

a memory for storing executable instructions;

a processor for operating the vehicle to perform the method according to the first aspect of the present specification, in accordance with the control of the instructions.

One advantageous effect of the present disclosure is that, according to an embodiment of the present disclosure, by acquiring first state information of a battery pack of a vehicle and second state information of a road surface on which the vehicle is running, a reference discharge current value adapted to a current scene may be obtained according to the first state information; then, a target discharge current value can be obtained according to the second state information and the reference discharge current value, so that the battery pack output current is controlled according to the target discharge current value to drive the vehicle to run. According to the method provided by the embodiment of the disclosure, in the driving process of the vehicle, the maximum discharging current value of the battery pack can not be fixed, but the target discharging current value adaptive to the current working condition is obtained according to the real-time state of the vehicle battery pack and the road surface, so that the vehicle is guaranteed to drive under the condition of sufficient assistance.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic configuration diagram of a constituent structure of a vehicle system capable of implementing the vehicle control method of the embodiment of the present disclosure.

Fig. 2 is a schematic flow chart of a vehicle control method provided by the embodiment of the disclosure.

FIG. 3 is a block schematic diagram of a first vehicle control process provided by an embodiment of the present disclosure.

FIG. 4 is a block schematic diagram of a first vehicle control process provided by embodiments of the present disclosure.

Fig. 5 is a block schematic diagram of a vehicle control device provided in an embodiment of the present disclosure.

Fig. 6 is a schematic hardware structure diagram of a vehicle according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

< hardware configuration >

Fig. 1 is a schematic diagram of a constituent structure of a vehicle system 100 capable of implementing the vehicle control method of the embodiment of the present disclosure.

As shown in fig. 1, the vehicle system 100 includes a server 1000, a user terminal 2000, and a vehicle 3000.

The server 1000 and the user terminal 2000, and the server 1000 and the vehicle 3000 may be communicatively connected through a network N. The network N over which the vehicle 3000 communicates with the server 1000 and the user terminal 2000 communicates with the server 1000 may be the same or different.

The server 1000 provides a service point for processes, databases, and communications facilities. The server 1000 may be a unitary server, a distributed server across multiple computers, a computer data center, a cloud server, or a cloud-deployed server cluster, etc. The server may be of various types, such as, but not limited to, a web server, a news server, a mail server, a message server, an advertisement server, a file server, an application server, an interaction server, a database server, or a proxy server. In some embodiments, each server may include hardware, software, or embedded logic components or a combination of two or more such components for performing the appropriate functions supported or implemented by the server. For example, a server, such as a blade server, a cloud server, etc., or may be a server group consisting of a plurality of servers, which may include one or more of the above types of servers, etc.

In one embodiment, the server 1000 may be as shown in fig. 1 and may include a processor 1100, a memory 1200, an interface device 1300, a communication device 1400, and the like.

Processor 1100 is used to execute computer programs, which may be written in instruction sets of architectures such as x86, Arm, RISC, MIPS, SSE, and the like. The memory 1200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 1300 includes, for example, various bus interfaces such as a serial bus interface (including a USB interface), a parallel bus interface, and the like. The communication device 1400 is capable of wired or wireless communication, for example.

In this embodiment, the memory 1200 of the server 1000 is used for storing a computer program for controlling the processor 1100 to perform operations for realizing monitoring and the like of the vehicle, including, for example: according to an unlocking request sent by the terminal device 2000 of the user, an unlocking instruction is sent to the vehicle, so that the vehicle can be ridden; according to a locking request sent by the terminal device 2000 of the user, a locking instruction is sent to the vehicle 3000, so that the vehicle 3000 is in a non-riding state; and, according to the failure information reported by the vehicle 3000, performing failure processing and the like on the vehicle 3000. The skilled person can design the computer program according to the disclosed solution. How the computer program controls the processor to operate is well known in the art and will not be described in detail here.

In this embodiment, the user terminal 2000 is, for example, a mobile phone, a portable computer, a tablet computer, a palm computer, a wearable device, or the like.

The user terminal 2000 is installed with a vehicle application client, and a user can operate the vehicle application client to achieve the purpose of using the vehicle 3000.

As shown in fig. 1, the user terminal 2000 may include a processor 2100, a memory 2200, an interface device 2300, a communication device 2400, a display device 2500, an input device 2600, a speaker 2700, a microphone 2800, and the like.

The processor 2100 is used to execute a computer program, which may be written in an instruction set of an architecture such as x86, Arm, RISC, MIPS, SSE, and so on. The memory 2200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 2300 includes, for example, a USB interface, a headphone interface, and the like. The communication device 2400 can perform wired or wireless communication, for example, the communication device 2400 may include at least one short-range communication module, for example, any module that performs short-range wireless communication based on a short-range wireless communication protocol such as a Hilink protocol, WiFi (IEEE802.11 protocol), Mesh, bluetooth, ZigBee, Thread, Z-Wave, NFC, UWB, LiFi, and the like, and the communication device 2400 may also include a long-range communication module, for example, any module that performs WLAN, GPRS, 2G/3G/4G/5G long-range communication. The display device 2500 is, for example, a liquid crystal display panel, a touch panel, or the like. The input device 2600 may include, for example, a touch screen, a keyboard, and the like. The user terminal 2000 may output an audio signal through the speaker 2700 and collect an audio signal through the microphone 2800.

In this embodiment, the memory 2200 of the user terminal 2000 is used to store a computer program for controlling the processor 2100 to operate to perform a method of using a vehicle, including, for example: acquiring a unique identifier of a vehicle 3000, generating an unlocking request for the vehicle 3000, and sending the unlocking request to the server 1000; send a lock-off request to the server 1000 for that vehicle 3000; and, bill calculation and the like are performed according to the charge settlement notice transmitted from the server 1000. A skilled person can design a computer program according to the solution disclosed in the present invention. How computer programs control the operation of the processor is well known in the art and will not be described in detail herein.

In this embodiment, the vehicle 3000 may be any type of vehicle having a motor for outputting torque to wheels of the vehicle 3000 to provide a riding power for a user, for example, an electric bicycle shown in fig. 1.

As shown in fig. 1, the control system of the vehicle 3000 may include a processor 3100, a memory 3200, an interface device 3300, a communication device 3400, an output device 3500, an input device 3600, and the like.

The processor 3100 is for executing a computer program, which may be written in an instruction set of an architecture such as x86, Arm, RISC, MIPS, SSE, etc. The computer program is for controlling the processor 3100 to operate for performing a vehicle method according to any of the embodiments of the disclosure, e.g. the computer program is for controlling the processor 3100 to operate for performing at least the following steps: acquiring first state information of a battery pack of the vehicle, and acquiring second state information of a road surface on which the vehicle runs; obtaining a reference discharge current value of the battery pack according to the first state information; obtaining a target discharge current value according to the second state information and the reference discharge current value; and controlling the output current of the battery pack to drive the vehicle to run according to the target discharge current value.

The vehicle 3000 may be provided with at least one processor 3100, and the at least one processor 3100 may be used as a controller of a control system. The processor 3100 may be, for example, a microprocessor MCU or the like.

The memory 3200 may comprise, for example, a ROM (read only memory), a RAM (random access memory), a non-volatile memory such as a hard disk, or the like.

The interface device 3300 may include at least one of a USB interface, an RJ45 interface, and an earphone interface, for example.

The communication device 3400 is capable of wired or wireless communication, for example, and is also capable of short-range and long-range communication, for example, and the communication device 3400 may include at least one of a GSM module, a GPRS module, a 3G module, a 4G module, a 5G module, and a WLAN module.

The output device 3500 may include at least one of a display module, an audio output module, and a light output module. The display module is, for example, a liquid crystal display or a touch display. The audio output module may include at least one of a speaker and a buzzer, for example. The light output module includes, for example, various LED lamp indicating circuits and the like.

The input device 3600 may include at least one of an audio input module for inputting an audio signal, such as a touch panel, a physical key input circuit, and a microphone.

It should be understood that although fig. 1 shows only one server 1000, one user terminal 2000, and one vehicle 3000, it is not meant to limit the respective numbers, and the vehicle system 100 may include a plurality of servers 1000, a plurality of user terminals 2000, a plurality of vehicles 3000, and the like.

< method examples >

Fig. 2 is a schematic flowchart of a vehicle control method provided in an embodiment of the present disclosure, which may be implemented by a vehicle, for example, the vehicle 3000 in fig. 1, and the vehicle control method of the present embodiment is described below by taking the vehicle 3000 shown in fig. 1 as an example, where the processor 3100 of the vehicle 3000 may be used as a main controller of the vehicle 3000.

As shown in fig. 2, the method of the present embodiment may include the following steps S2100-S2400, which are described in detail below.

Step S2100 acquires first state information of a battery pack of the vehicle, and acquires second state information of an environment in which the vehicle is located.

In particular, in a vehicle in the prior art, for example, an electric bicycle usually uses a discharge current output by a battery pack to drive a motor to rotate so as to drive the vehicle to run, during the running of the vehicle, a maximum discharge current of the battery pack is usually fixed and cannot be adaptively adjusted according to a working condition of the vehicle, so that the problem of insufficient assistance or even disconnection of the assistance of the vehicle under certain specific working conditions may be caused.

For example, when the electric bicycle works in a low-temperature environment in winter in the north, because the battery pack, for example, the lithium iron phosphate battery has a poor low-temperature performance phase, the working voltage of the battery pack can be pulled down for protection when the battery pack is in the environment, and the vehicle often needs a large discharge current when being started under a heavy load, so that the problem of power assistance during the disconnection of the electric bicycle can occur under the condition.

For another example, if the maximum discharging current of the battery pack cannot be adjusted adaptively, when the electric bicycle goes up a slope, the battery pack cannot adjust the maximum discharging current in time according to the road condition where the battery pack is located, so as to provide a large power to the electric bicycle, which causes the problem that the power of the electric bicycle is insufficient when the electric bicycle goes up the slope, and the riding experience of the user is affected.

To above problem, in order to make the battery package of vehicle can be according to its maximum discharge current of the self-adaptation of the operating mode self-adaptation of vehicle, in order to promote the user experience of riding. According to the method provided by the embodiment of the disclosure, the first state information of the battery pack of the vehicle and the second state information of the environment where the vehicle is located are acquired in the driving process of the vehicle, and the maximum discharge current of the battery pack of the vehicle is adjusted adaptively, so that the vehicle can be guaranteed to be driven under the condition of sufficient assistance.

The first status information may be information indicating the current operation capability of the battery pack. For example, the model number, State of Charge (SOC), and operating temperature of the battery pack may be mentioned.

The state of charge, also called the remaining capacity, is the ratio of the remaining capacity to the rated capacity under the same conditions of the battery pack at a certain discharge rate. In this embodiment, the state of charge of the battery pack may be obtained by an electric quantity acquisition chip disposed in the battery pack.

The working temperature is the measured temperature of the working environment of the battery pack at the current moment. In this embodiment, the operating temperature of the battery pack may be obtained by a temperature sensor provided on the battery pack.

The second status information may be road condition information of an environment where the vehicle is located. For example, the second state information may be a gradient value of a road surface on which the vehicle travels, or may be congestion information of an environment in which the vehicle is located.

In this embodiment, the second state information of the vehicle may be obtained by measuring with a gyroscope provided in the vehicle, and/or by acquiring information of an obstacle around the vehicle by an obstacle sensing device provided in the vehicle, where the obstacle in this embodiment may be another vehicle, a pedestrian, or the like within a preset range of distance from the vehicle within a driving environment of the vehicle.

After the first state information of the battery pack of the vehicle and the second state information of the environment where the vehicle is located are obtained, the target discharge current value can be obtained according to the first state information and the second state information, and the maximum discharge current of the battery pack is adjusted in a self-adaptive mode according to the target discharge current value.

After step S2100, step S2200 is performed to obtain a reference discharge current value of the battery pack according to the first state information.

The reference discharge current value is the maximum allowable discharge current value of the battery pack at the corresponding charge state and the corresponding working temperature,

specifically, in one embodiment, the first state information of the battery pack may include a model, a state of charge, and an operating temperature of the battery pack, in which case, the obtaining a reference discharge current value of the battery pack according to the first state information includes: and acquiring the reference discharge current value matched with the charge state and the working temperature from a preset discharge current limit table corresponding to the model.

In other words, the maximum discharge current of the battery pack is adaptively adjusted so as to ensure that the vehicle has sufficient assistance force during the running of the vehicle. In this embodiment, maximum allowable discharge current values corresponding to different types of battery packs at different operating temperatures and different states of charge may be obtained through pre-testing and arranged as a discharge current limit table, so that a reference discharge current value corresponding to first state information is obtained according to the first state information of the battery pack of the vehicle and the discharge current limit table during the running of the vehicle.

Step S2300, obtaining a target discharge current value according to the second state information and the reference discharge current value.

After the step S2200 is performed, the reference discharging current value of the battery pack at the current time is obtained according to the first state information of the battery pack of the vehicle, and then the discharging current of the battery pack of the vehicle can be adaptively adjusted according to the reference discharging current value.

In practice, an electronic controller, also called an electronic control, of a vehicle is usually provided with a preset discharge current value as a standard current limit value, and meanwhile, the electronic control stops power output when the state of charge of a battery pack is lower than a certain limit value. Therefore, in order to enable the vehicle to have sufficient assistance under different working conditions, the reference discharge current value obtained according to the first state information of the battery pack needs to be adjusted under the condition that the discharge capacity of the battery pack is smaller than the preset discharge current value set by the vehicle electronic control.

In one embodiment, the obtaining a target discharge current value according to the second state information and the reference discharge current value includes: and under the condition that the reference discharge current value meets a first preset condition and the second state information meets a second preset condition, obtaining the target discharge current value according to the reference discharge current value.

Taking an electric bicycle as an example, in practice, the standard discharge current value of the electric control setting of the electric bicycle may be 18A, and the vehicle stopping power input may be set when the state of charge of the battery pack is lower than 15%. However, in a low-temperature environment, due to the difference in low-temperature performance of the battery pack, it may happen that the state of charge of the battery pack is not less than 15%, but the reference discharge current value thereof is lower than 18A, that is, lower than the standard discharge current value preset in the electronic control. Therefore, in this case, the electronic control of the vehicle is required to adaptively adjust the reference discharge current value according to the reference discharge current value and the second state information of the environment where the vehicle is located, so as to obtain the target discharge current value.

Specifically, the obtaining the target discharge current value according to the reference discharge current value includes: calculating a difference value between the reference discharge current value and a preset calibration value as the target discharge current when the reference discharge current value is greater than a first threshold and not greater than a second threshold, wherein the preset calibration value is not greater than the first threshold; and setting the target discharge current value as a preset discharge current value in a case where the reference discharge current value is not less than the second threshold value and the gradient value is less than a preset gradient threshold value; and calculating a product of the gradient value and a preset coefficient and calculating a sum of the preset discharge current value and the product as the target discharge current value, in a case where the reference discharge current value is not less than a second threshold value and the gradient value is not less than the preset gradient threshold value.

For convenience of explanation, in the present embodiment, the vehicle is an electric bicycle, and the second state information of the vehicle is a gradient value of a road surface on which the vehicle travels.

For example, in the case where the preset discharge current value set in the electric control of the electric bicycle is 18A, the first threshold value may be set to 1A, and the second threshold value may be set to 19A; when the reference discharge current value is 5A, i.e., greater than 1A and not greater than 19A, during the running of the vehicle; in this case, in order to extend the use period of the battery pack and ensure the riding assist of the electric bicycle, the electric control of the electric bicycle may calculate a target discharge current value according to the following formula 1:

equation 1: setting the target discharge current value as a reference discharge current value-a preset calibration value;

the preset calibration value can be set as required, for example, it can be set to 1A.

For another example, when the reference discharge current value is 25A, that is, not less than the second threshold value 19A; in this case, in order to prolong the service life of the battery pack and ensure that the electric bicycle has sufficient riding assistance, whether the electric bicycle runs on a flat road can be judged according to the second state information, namely the gradient value of the road surface on which the vehicle runs; if yes, the battery pack does not need to output large discharge current, and the target discharge current value is set to be the preset discharge current value 18A through electronic control, so that the vehicle can be ensured to have sufficient power; if the vehicle is not traveling on a flat road, i.e., the vehicle is in an uphill state, the electronic control of the vehicle may calculate the target discharge current value according to the following equation 2 in order to ensure that the vehicle has sufficient riding assistance:

equation 2: the target discharge current value is equal to a preset discharge current value + a gradient value is a preset coefficient;

the preset coefficient may be set as needed, for example, it may be set to 1A.

It should be noted that, in specific implementation, when the reference discharge current value is not greater than the first threshold, that is, when the remaining battery capacity is insufficient, the vehicle assistance may be directly turned off by the electronic control, and details are not described here.

After the target discharge current value is obtained through the above steps, step S2400 may be executed to control the battery pack output current to drive the vehicle to run according to the target discharge current value.

In one embodiment, the controlling the battery pack output current to drive the vehicle to run according to the target discharge current value includes: and controlling the battery pack to output current not exceeding the target discharge current value so as to drive the vehicle to run.

According to the above description, the vehicle control method provided by the embodiment of the disclosure can adaptively adjust the discharge current of the battery pack according to the target discharge current value in the driving process of the vehicle by acquiring the first state information of the battery pack of the vehicle and the second state information of the environment where the vehicle is located, so as to ensure that the vehicle continuously assists when the discharge capacity of the battery pack is insufficient, and when the discharge capacity of the battery pack is sufficient and the vehicle is in a situation requiring a large assist, the electric control can increase the discharge current in real time to increase the output power of the motor according to the requirement, so as to improve the user experience.

In addition, in one embodiment, the method provided by the present application further comprises: and obtaining a target charging current value from a preset charging current limit table according to the first state information.

In particular, since the charging current provided when the vehicle, especially the electric bicycle, is braked when the vehicle is going downhill is usually large, if the maximum charging current allowed by the battery pack is a fixed value and the value is small, there may be a problem of damaging the battery pack under such conditions.

In order to solve the problem, a charging current limit table can be obtained through measurement in advance, the table is used for reflecting corresponding reference charging current values of the battery pack under different temperatures and different charge states, and the maximum charging current value of the battery pack can be adjusted in real time in the driving process of the vehicle by presetting the table in the vehicle.

In a specific implementation, the reference charging current value obtained according to the first state information may be directly used as the target charging current value, or after the reference charging current value is obtained, the reference charging current value may be adjusted as needed to obtain the target charging current value, which is not limited herein.

After obtaining the target charging current value, the method provided by the embodiment further includes: and under the condition that a preset charging condition is met, charging the battery pack by using a charging current not greater than the target charging current value.

In order to facilitate understanding of the present invention, a vehicle control method provided in the present embodiment is described below with reference to fig. 3, as shown in fig. 3, when implemented, the vehicle includes a first controller and a second controller; the obtaining a reference discharge current value of the battery pack according to the first state information includes: the first controller obtains the reference discharge current value according to the first state information and sends the reference discharge current value to the second controller; the obtaining a target discharge current value according to the second state information and the reference discharge current value includes: and the second controller obtains the target discharge current value according to the second state information and the reference discharge current value.

The first controller may be the primary control of the vehicle, for example, may be processor 3100 of vehicle 3000 shown in fig. 1.

The second controller may be an electronic controller of the vehicle, i.e. electronically controlled.

As shown in fig. 3, the model, the operating temperature, and the state of charge of the battery pack, which are acquired by a temperature sensor and an electric quantity acquisition chip provided in the battery pack, may be used as first state information, and the first state information is sent to a first controller via a 485/Controller Area Network (CAN) bus; after the first controller obtains the first state information, a reference discharging current value and a reference charging current value which are matched with each other can be obtained from a preset discharging current limit table and a preset charging current limit table corresponding to the model of the battery pack according to the first state information, and the two values are sent to the second controller; after the second controller obtains the reference discharging current value and the reference charging current value, the reference charging current value can be directly used as a target charging current value to charge the battery under the condition that the preset charging condition is met, and the reference discharging current value is adjusted through second state information sent by the first controller, such as a slope value shown in fig. 3, so that the battery pack is controlled to output a current not greater than the target discharging current value, and the motor is driven to rotate to provide power for the vehicle.

In the embodiment shown in fig. 3, after the discharge current limit table and the charge current limit table corresponding to the model of the battery pack used by each vehicle are obtained, the two types of tables can be pushed to the main control of the vehicle conveniently by remote pushing through the cloud, so as to implement the vehicle control method.

Of course, in practice, as shown in fig. 4, the discharge current limit table and the charge current limit table may be provided in advance in the battery pack of the vehicle as needed; the control module in the battery pack acquires first state information according to the temperature sensor and the electric quantity acquisition chip, and after inquiring to acquire a reference discharge current value and a reference charge current value, the two values are directly sent to the second controller, so that the second controller controls the battery pack to perform charge and discharge processing according to the two values. However, since this embodiment requires manual upgrade of the battery pack, much description of this embodiment will be omitted here.

In summary, according to the vehicle control method provided by the embodiment of the disclosure, the reference discharge current value adapted to the current scene can be obtained according to the first state information by obtaining the first state information of the battery pack of the vehicle and the second state information of the road surface on which the vehicle runs; then, a target discharge current value can be obtained according to the second state information and the reference discharge current value, so that the battery pack output current is controlled according to the target discharge current value to drive the vehicle to run. According to the method provided by the embodiment of the disclosure, in the driving process of the vehicle, the maximum discharging current value of the battery pack can not be fixed, but the target discharging current value adapted to the current working condition is obtained according to the current battery pack of the vehicle and the state of the road surface, so that the vehicle is guaranteed to drive under the condition of sufficient assistance.

< apparatus embodiment >

Corresponding to the above method embodiments, in the present embodiment, there is also provided a vehicle control apparatus 5000, which may be applied to a vehicle. As shown in fig. 5, the vehicle control apparatus 5000 may include a state information acquisition module 5100, a reference discharge current value acquisition module 5200, a target discharge current value acquisition module 5300, and a control module 5400.

The state information obtaining module 5100 is configured to obtain first state information of a battery pack of the vehicle and obtain second state information of a road surface on which the vehicle travels.

The reference discharging current value obtaining module 5200 is configured to obtain the reference discharging current value of the battery pack according to the first state information.

In one embodiment, the first state information includes a model number, a state of charge, and an operating temperature of the battery pack; the reference discharge current value obtaining module 5200, when obtaining the reference discharge current value of the battery pack according to the first state information, may be configured to: and acquiring the reference discharge current value matched with the charge state and the working temperature from a preset discharge current limit table corresponding to the model.

The target discharge current value obtaining module 5300 is configured to obtain a target discharge current value according to the second state information and the reference discharge current value.

In one embodiment, the target discharge current value obtaining module 5300, when obtaining the target discharge current value according to the second state information and the reference discharge current value, may be configured to: and under the condition that the reference discharge current value meets a first preset condition and the second state information meets a second preset condition, obtaining the target discharge current value according to the reference discharge current value.

In this embodiment, the second state information includes a gradient value of a road surface on which the vehicle is running; the target discharge current value obtaining module 5300, when obtaining the target discharge current value according to the reference discharge current value, may be configured to: calculating a difference value between the reference discharge current value and a preset calibration value as the target discharge current when the reference discharge current value is greater than a first threshold and not greater than a second threshold, wherein the preset calibration value is not greater than the first threshold; and setting the target discharge current value as a preset discharge current value in a case where the reference discharge current value is not less than the second threshold value and the gradient value is less than a preset gradient threshold value; and under the condition that the reference discharge current value is not smaller than a second threshold value and the gradient value is not smaller than the preset gradient threshold value, acquiring a product of the gradient value and a preset coefficient, and calculating a sum of the preset discharge current value and the product as the target discharge current value.

The control module 5400 is configured to control the battery pack to output current to drive the vehicle to run according to the target discharge current value.

In one embodiment, the apparatus 5000 further includes a target charging current value obtaining module, configured to obtain a target charging current value from a preset charging current limit table according to the first state information.

< apparatus embodiment >

Corresponding to the above-described embodiments, in the present embodiment, there is also provided another vehicle, which may include the vehicle control device 5000 according to any embodiment of the present disclosure, for implementing the vehicle control method of any embodiment of the present invention.

As shown in fig. 6, the vehicle 6000 may also include a processor 6200 and a memory 6100, the memory 6100 being for storing executable instructions; the processor 6200 is configured to operate a vehicle according to the commanded control to perform a vehicle control method according to any embodiment of the disclosure.

The various modules of the apparatus 5000 above may be implemented by the processor 6200 executing the instructions to perform a method according to any embodiment of the invention.

The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A vehicle control method, applied to a vehicle, comprising:

2. The method of claim 1, wherein the vehicle comprises a first controller and a second controller;

3. The method of claim 1, wherein the first state information includes a model number, a state of charge, and an operating temperature of the battery pack;

4. The method of claim 1, wherein obtaining a target discharge current value based on the second state information and the reference discharge current value comprises:

5. The method according to claim 3, characterized in that the second state information comprises a gradient value of a road surface on which the vehicle is traveling;

6. The method of claim 1, further comprising:

7. The method according to claim 6, wherein after obtaining the target charging current value, the method further comprises:

8. The method according to claim 1, wherein the controlling the battery pack output current to drive the vehicle to run according to the target discharge current value comprises:

and controlling the battery pack to output current not exceeding the target discharge current value so as to drive the vehicle to run.

9. A vehicle control device, characterized by being applied to a vehicle, comprising:

10. A vehicle characterized by comprising the vehicle control apparatus of claim 9, or,

the vehicle includes:

a memory for storing executable instructions;

a processor configured to operate the vehicle to perform the method of any one of claims 1-8 under control of the instructions.