Control method and device for working mode of electric trailer, electronic equipment and medium

Abstract

The invention discloses an electric trailer working mode control method and device, electronic equipment and a medium. The method comprises the steps that a current state signal of a whole vehicle is obtained; the whole vehicle comprises an electric trailer; according to the current state signal, the required torque of the whole vehicle is determined so as to control the whole vehicle to start; when the whole vehicle is started, the charge state of a power battery of the electric trailer is obtained; according to the charge state, working modes of the electric trailer are determined, and the working modes comprise an auxiliary driving mode, an energy recovery mode, a standby mode and a charging mode. By means of the method, the working mode of the electric trailer is determined according to the charge state of the power battery of the electric trailer, related parameters are few, control logic is simple, cost is low, and the method has excellent economical efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electric trailers, and in particular to a control method, device, electronic equipment and medium for an operating mode of an electric trailer. Background Art

[0002] A heavy-duty tractor consists of a main vehicle (tractor head) and a trailer. Generally, only the main vehicle has a power source. Regardless of whether the main vehicle is driven by an engine or a motor, the braking energy of the trailer can only be converted into heat energy and dissipated during braking. The introduction of electric trailers can use motor braking to provide all or part of the braking force. The braking energy generated during electric braking can be stored in the semi-trailer power battery and converted into driving force during driving, thereby reducing energy consumption and increasing the driving range of heavy-duty tractors. Considering cost factors, electric trailers will not be matched with high-power motors and large-capacity batteries. Therefore, electric trailers are generally only used as auxiliary drives. The control strategy for whether electric trailers provide auxiliary drives will affect the power and economy of the entire vehicle.

[0003] The existing control method for the working mode of the electric trailer usually determines the working mode of the electric trailer based on parameters such as key signal, handbrake signal, accelerator pedal opening signal parameter, brake pedal opening signal parameter, steering wheel angle parameter and yaw rate parameter. However, this method involves too many parameters, complex control logic, increases the production cost of the whole vehicle, and makes the economy poor. Summary of the invention

[0004] The present invention provides a control method, device, electronic device and medium for an electric trailer working mode, so as to determine the working mode of the electric trailer according to the charge state of the power battery of the electric trailer, involving few parameters, simple control logic, low cost and better economy.

[0005] In a first aspect, the present invention provides a method for controlling an electric trailer working mode, comprising:

[0006] Obtain the current status signal of the whole vehicle; the whole vehicle includes an electric trailer;

[0007] According to the current status signal, determine the required torque of the vehicle to control the start of the vehicle;

[0008] When the vehicle is started, the state of charge of the power battery of the electric trailer is obtained;

[0009] The working mode of the electric trailer is determined according to the state of charge, and the working modes include auxiliary drive mode, energy recovery mode, standby mode and charging mode.

[0010] Optionally, the current state signal includes an accelerator pedal opening signal;

[0011] According to the current status signal, the required torque of the vehicle is determined, including:

[0012] According to the accelerator pedal opening signal, based on the first calculation formula, the required torque of the whole vehicle is determined;

[0013] The first calculation formula is: T req =αT max , where T req is the required torque, α is the accelerator pedal opening signal, T max It is the peak torque output of the vehicle.

[0014] Optionally, the working mode of the electric trailer is determined according to the state of charge, including:

[0015] When the state of charge satisfies a first preset condition, determining that the electric trailer is in an auxiliary drive mode, a standby mode, or an energy recovery mode;

[0016] When the state of charge meets the second preset condition, it is determined that the electric trailer is in the charging mode.

[0017] Optionally, when the state of charge satisfies the first preset condition, determining that the electric trailer is in the auxiliary driving mode, the standby mode, or the energy recovery mode includes:

[0018] When the state of charge satisfies the first preset condition, determining the relationship between the required torque of the vehicle and the rated torque of the electric trailer;

[0019] When the required torque of the whole vehicle is greater than or equal to the rated torque of the electric trailer, determining that the electric trailer is in the auxiliary driving mode;

[0020] When the required torque of the entire vehicle is less than the rated torque of the electric trailer, it is determined that the electric trailer is in the energy recovery mode or the standby mode.

[0021] Optionally, when the required torque of the whole vehicle is less than the rated torque of the electric trailer, determining that the electric trailer is in the energy recovery mode or the standby mode includes:

[0022] When the required torque of the whole vehicle is less than the rated torque of the electric trailer, the driving state of the whole vehicle is determined; the driving state of the whole vehicle includes a driving state and a sliding or braking state;

[0023] When the vehicle is in driving state, make sure the electric trailer is in standby mode;

[0024] When the vehicle is in a coasting or braking state, it is determined that the electric trailer is in an energy recovery mode.

[0025] Optionally, the first preset condition is 50%≤SOC≤100%, where SOC is the state of charge.

[0026] Optionally, the second preset condition is SOC<50%, where SOC is the state of charge.

[0027] In a second aspect, the present invention provides a control device for an electric trailer working mode, comprising:

[0028] A first signal acquisition module is used to acquire a current state signal of the whole vehicle; the whole vehicle includes an electric trailer;

[0029] The required torque determination module is used to determine the required torque of the vehicle according to the current state signal to control the start of the vehicle;

[0030] The second signal acquisition module is used to obtain the charge state of the power battery of the electric trailer when the whole vehicle is started;

[0031] The working mode determination module is used to determine the working mode of the electric trailer according to the state of charge. The working modes include auxiliary drive mode, energy recovery mode, standby mode and charging mode.

[0032] In a third aspect, the present invention provides an electronic device, the electronic device comprising:

[0033] at least one processor; and

[0034] a memory communicatively connected to at least one processor; wherein,

[0035] The memory stores a computer program that can be executed by at least one processor, and the computer program is executed by at least one processor so that the at least one processor can execute the above-mentioned control method of the electric trailer working mode.

[0036] In a fourth aspect, the present invention provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to implement the above-mentioned control method of the electric trailer working mode when the processor executes them.

[0037] The technical solution of the present invention obtains the current state signal of the whole vehicle; the whole vehicle includes an electric trailer; according to the current state signal, the required torque of the whole vehicle is determined to control the start of the whole vehicle; when the whole vehicle is started, the charge state of the power battery of the electric trailer is obtained; according to the charge state, the working mode of the electric trailer is determined, and the working mode includes auxiliary drive mode, energy recovery mode, standby mode and charging mode. Using the above method, the working mode of the electric trailer can be determined according to the charge state of the power battery of the electric trailer, which involves fewer parameters, simple control logic, low cost, and better economy.

[0038] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A flow chart of a method for controlling an electric trailer working mode provided by an embodiment of the present invention;

[0041] Figure 2 A flow chart of a control method for a second electric trailer working mode provided by an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of a control device for an electric trailer working mode provided by an embodiment of the present invention;

[0043] Figure 4 It is a structural block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] In one embodiment, Figure 1 This is a flow chart of a method for controlling the working mode of an electric trailer provided by an embodiment of the present invention. This embodiment can be applied to the case of determining the working mode of an electric trailer. The method can be executed by a control device for the working mode of an electric trailer. The control device for the working mode of an electric trailer can be implemented in the form of hardware and / or software. The control device for the working mode of an electric trailer can be configured in an electronic device. Figure 1 As shown, the method includes:

[0047] S110: Obtain the current status signal of the vehicle.

[0048] The current state signal of the vehicle may include but is not limited to an accelerator pedal opening signal. The vehicle includes an electric trailer and a main vehicle.

[0049] S120: Determine the required torque of the whole vehicle according to the current state signal to control the start of the whole vehicle.

[0050] Among them, the required torque of the whole vehicle refers to the driving torque required by the vehicle under different working conditions to meet the power performance requirements, such as starting, accelerating, climbing, etc.

[0051] Specifically, after obtaining the current state signal of the vehicle, the vehicle required torque corresponding to the current state signal can be determined by using a preset calculation formula according to the obtained current state signal. After determining the required torque of the vehicle, the required torque is output to control the motor to start, thereby controlling the start of the vehicle.

[0052] S130: When the whole vehicle is started, the state of charge of the power battery of the electric trailer is obtained.

[0053] S140: Determine the working mode of the electric trailer according to the state of charge.

[0054] Among them, the working modes include auxiliary drive mode, energy recovery mode, standby mode and charging mode. The auxiliary drive mode is that the electric trailer and the main vehicle work together to provide the required torque of the whole vehicle so that the vehicle can be driven normally. The energy recovery mode is during the deceleration of the vehicle, and there is no need to provide driving torque to the whole vehicle. At this time, the motor of the electric trailer provides electric braking force, and the generated braking energy will be recovered and stored in the power battery of the electric trailer. Standby mode means that the electric trailer does not provide driving capability, and only the main vehicle provides driving torque to make the vehicle run normally. Charging mode refers to the state of charge of the power battery of the electric trailer is low. At this time, in order to avoid power loss, the power battery of the electric trailer is charged.

[0055] Specifically, when the vehicle is started, the state of charge of the electric trailer power battery is obtained in real time, and the working mode of the electric trailer at this time can be determined according to the state of charge. In this working mode, the required torque of the vehicle can be provided by the corresponding main vehicle and / or electric trailer to ensure normal driving of the vehicle.

[0056] The technical solution of the embodiment of the present invention obtains the current state signal of the whole vehicle; the whole vehicle includes an electric trailer; according to the current state signal, the required torque of the whole vehicle is determined to control the start of the whole vehicle; when the whole vehicle starts, the state of charge of the power battery of the electric trailer is obtained; according to the state of charge, the working mode of the electric trailer is determined, and the working mode includes auxiliary drive mode, energy recovery mode, standby mode and charging mode. Using the above method, the working mode of the electric trailer can be determined according to the state of charge of the power battery of the electric trailer, which involves few parameters, simple control logic, low cost, and better economy.

[0057] Figure 2 This is a flow chart of a control method for a second electric trailer working mode provided by an embodiment of the present invention. The control method for the electric trailer working mode in the above embodiment is further refined in the embodiment of the present invention. For details not yet fully described in this embodiment, please refer to the above embodiment and will not be repeated here. Figure 2 As shown, the method includes:

[0058] S210: Obtain the current status signal of the vehicle.

[0059] The current state signal includes an accelerator pedal opening signal. The accelerator pedal opening may be the opening size when the user steps on the accelerator pedal. The accelerator pedal opening signal may be obtained by, but is not limited to, obtaining it through an accelerator pedal opening sensor.

[0060] S220: Determine the required torque of the whole vehicle according to the accelerator pedal opening signal and based on the first calculation formula to control the start of the whole vehicle.

[0061] Specifically, after the accelerator pedal opening signal is obtained, the accelerator pedal opening signal is combined with the peak torque output of the vehicle obtained at the current vehicle speed, and the two are substituted into the first calculation formula T reg =αT max At this time, the peak torque T output by the vehicle max and the accelerator pedal opening signal α are both known quantities obtained, and the required torque T can be calculated by substituting them into reg .

[0062] S230: When the whole vehicle is started, the state of charge of the power battery of the electric trailer is obtained.

[0063] S240: When the state of charge satisfies a first preset condition, determining whether the electric trailer is in an auxiliary drive mode, a standby mode, or an energy recovery mode.

[0064] Among them, this step can be refined as follows: when the charge state meets the first preset condition, determine the relationship between the required torque of the whole vehicle and the rated torque of the electric trailer; when the required torque of the whole vehicle is greater than or equal to the rated torque of the electric trailer, determine that the electric trailer is in the auxiliary drive mode; when the required torque of the whole vehicle is less than the rated torque of the electric trailer, determine that the electric trailer is in the energy recovery mode or the standby mode.

[0065] The first preset condition is 50%≤SOC≤100%, where SOC is the state of charge.

[0066] Specifically, after obtaining the state of charge of the power battery, determine whether the state of charge of the power battery meets the first preset condition. When the state of charge of the power battery meets the first preset condition, that is, the state of charge SOC of the power battery is between [50%, 100%], it indicates that the vehicle has sufficient power and the electric trailer can be used to drive the entire vehicle. In order to ensure economy and reduce power loss, when determining whether the electric trailer needs to be driven, the relationship between the calculated required torque of the entire vehicle and the rated torque of the electric trailer can be used. When the required torque T of the entire vehicle is req Greater than or equal to the rated torque of the electric trailer When Among them, i G is the speed ratio of the electric trailer reducer, indicating the required torque T of the vehicle at this time req The driving torque provided by the main vehicle alone cannot meet the required torque of the whole vehicle. Therefore, the main vehicle and the electric trailer need to jointly provide the required torque of the whole vehicle. That is, the working mode of the electric trailer is the auxiliary driving mode, and the electric trailer outputs the rated torque. At this time, the required torque of the whole vehicle is i Z is the speed ratio of the main vehicle's reducer, is the vehicle speed v x When the vehicle's required torque T req Less than the rated torque of the electric trailer When This indicates that the vehicle's required torque is small at this time, and the main vehicle alone can provide the required torque for the vehicle. In this case, the electric trailer is controlled to work in energy recovery mode or standby mode. In addition, when determining whether the electric trailer is in energy recovery mode or standby mode, it is also necessary to determine the vehicle's driving state. The driving state includes the driving state and the coasting or braking state. When the vehicle is in the driving state, such as when driving on a normal flat road or uphill, the vehicle needs to provide driving torque to enable the vehicle to travel normally. At this time, the electric trailer is in standby mode, and the vehicle's required torque is only provided by the main vehicle, that is, When the vehicle is in a coasting or braking state, such as when driving on a downhill road, there is no need to provide driving torque to drive the vehicle. At this time, the electric trailer's motor provides electric braking force, and the electric trailer is in energy recovery mode. The braking energy generated by electric braking can be recovered and stored in the electric trailer's power battery to achieve energy recycling.

[0067] S250: When the state of charge satisfies a second preset condition, determine that the electric trailer is in a charging mode.

[0068] The second preset condition is SOC<50%, where SOC is the state of charge.

[0069] Specifically, when the state of charge SOC of the power battery is less than 50% of the power, it indicates that the charge of the electric trailer is low. At this time, in order to avoid the power battery from running out of power, the electric trailer is controlled to be in charging mode so that the power battery is only charged but not discharged. At this time, the required torque of the whole vehicle is only provided by the main vehicle to ensure the normal driving of the vehicle. When the power battery is charged to 90%, the charging is stopped. At this time, the electric trailer determines the working mode according to the relationship between the required torque of the whole vehicle and the rated torque of the electric trailer. It should be noted that the reason why this embodiment sets the charging to 90% stop instead of 100% full charge is that a 10% rechargeable interval can be reserved after charging to 90%. In this way, when the electric trailer is in energy recovery mode during the subsequent driving process, the motor of the electric trailer will perform electric braking to generate a certain amount of braking energy, which can be stored in the reserved 10% interval, and there will be no situation where the power battery cannot be charged due to excessive charge, thereby ensuring economy.

[0070] The technical solution of the embodiment of the present invention obtains the current state signal of the whole vehicle; determines the required torque of the whole vehicle based on the first calculation formula according to the accelerator pedal opening signal to control the start of the whole vehicle; obtains the state of charge of the power battery of the electric trailer when the whole vehicle starts; determines that the electric trailer is in auxiliary drive mode, standby mode or energy recovery mode when the state of charge meets the first preset condition; determines that the electric trailer is in charging mode when the state of charge meets the second preset condition. Using the above method, the working mode of the electric trailer is accurately determined while ensuring economy and reducing the energy consumption of the whole vehicle.

[0071] Figure 3 A schematic diagram of a control device for an electric trailer working mode provided by an embodiment of the present invention, referring to Figure 3 As shown, the device comprises:

[0072] The first signal acquisition module 110 is used to acquire the current state signal of the whole vehicle; the whole vehicle includes an electric trailer;

[0073] The required torque determination module 120 is used to determine the required torque of the vehicle according to the current state signal to control the start of the vehicle;

[0074] The second signal acquisition module 130 is used to obtain the charge state of the power battery of the electric trailer when the whole vehicle is started;

[0075] The working mode determination module 140 is used to determine the working mode of the electric trailer according to the state of charge, and the working modes include auxiliary driving mode, energy recovery mode, standby mode and charging mode.

[0076] The control device for the working mode of the electric trailer provided in the embodiment of the present invention can execute the control method for the working mode of the electric trailer provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0077] Optionally, the required torque determination module 120 is further configured to: determine the required torque of the vehicle according to the accelerator pedal opening signal based on a first calculation formula; the first calculation formula is: T reg =αT max , where T req is the required torque, α is the accelerator pedal opening signal, T max It is the peak torque output of the vehicle.

[0078] Optionally, the working mode determination module 140 is further configured to: when the charge state meets the first preset condition, determine that the electric trailer is in the auxiliary drive mode, the standby mode or the energy recovery mode; when the charge state meets the second preset condition, determine that the electric trailer is in the charging mode.

[0079] Optionally, the working mode determination module 140 is also configured to: determine the relationship between the required torque of the whole vehicle and the rated torque of the electric trailer when the charge state meets the first preset condition; determine that the electric trailer is in the auxiliary drive mode when the required torque of the whole vehicle is greater than or equal to the rated torque of the electric trailer; and determine that the electric trailer is in the energy recovery mode or the standby mode when the required torque of the whole vehicle is less than the rated torque of the electric trailer.

[0080] Optionally, the working mode determination module 140 is also configured to: determine the driving state of the whole vehicle when the required torque of the whole vehicle is less than the rated torque of the electric trailer; the driving state of the whole vehicle includes a driving state and a coasting or braking state; when the whole vehicle is in a driving state, determine that the electric trailer is in standby mode; when the whole vehicle is in a coasting or braking state, determine that the electric trailer is in energy recovery mode.

[0081] In one embodiment, Figure 4 is a structural block diagram of an electronic device provided by an embodiment of the present invention, such as Figure 4 As shown, a schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0082] like Figure 4 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0084] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the control method of the electric trailer working mode.

[0085] In some embodiments, the control method of the electric trailer working mode can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method of the electric trailer working mode described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the control method of the electric trailer working mode in any other appropriate manner (for example, by means of firmware).

[0086] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0087] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0088] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0089] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0090] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0091] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0092] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0093] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an electric trailer working mode, characterized in that: include: Acquiring a current status signal of a whole vehicle; the whole vehicle includes the electric trailer; Determining the required torque of the whole vehicle according to the current state signal to control the start of the whole vehicle; When the whole vehicle is started, obtaining the state of charge of the power battery of the electric trailer; According to the state of charge, an operating mode of the electric trailer is determined, and the operating mode includes an auxiliary driving mode, an energy recovery mode, a standby mode and a charging mode.

2. The control method according to claim 1, characterized in that: The current state signal includes an accelerator pedal opening signal; Determining the required torque of the vehicle according to the current state signal includes: Determining the required torque of the vehicle according to the accelerator pedal opening signal and based on a first calculation formula; The first calculation formula is: req =αT max , where T req is the required torque, α is the accelerator pedal opening signal, T max is the peak torque output by the whole vehicle.

3. The control method according to claim 1, characterized in that: Determining the working mode of the electric trailer according to the state of charge includes: When the state of charge satisfies a first preset condition, determining that the electric trailer is in the auxiliary drive mode, the standby mode, or the energy recovery mode; When the state of charge meets a second preset condition, it is determined that the electric trailer is in the charging mode.

4. The control method according to claim 3, characterized in that: When the state of charge satisfies a first preset condition, determining that the electric trailer is in the auxiliary drive mode, the standby mode, or the energy recovery mode includes: When the state of charge satisfies the first preset condition, determining the relationship between the required torque of the whole vehicle and the rated torque of the electric trailer; When the required torque of the whole vehicle is greater than or equal to the rated torque of the electric trailer, determining that the electric trailer is in the auxiliary drive mode; When the required torque of the whole vehicle is less than the rated torque of the electric trailer, it is determined that the electric trailer is in the energy recovery mode or the standby mode.

5. The control method according to claim 4, characterized in that: When the required torque of the whole vehicle is less than the rated torque of the electric trailer, determining that the electric trailer is in the energy recovery mode or the standby mode includes: When the required torque of the whole vehicle is less than the rated torque of the electric trailer, determining the driving state of the whole vehicle; the driving state of the whole vehicle includes a driving state and a sliding or braking state; When the whole vehicle is in the driving state, determining that the electric trailer is in the standby mode; When the whole vehicle is in the coasting or braking state, it is determined that the electric trailer is in the energy recovery mode.

6. The control method according to claim 3, characterized in that: The first preset condition is 50%≤SOC≤100%, where SOC is the state of charge.

7. The control method according to claim 3, characterized in that: The second preset condition is SOC<50%, where SOC is the state of charge.

8. A control device for an electric trailer working mode, characterized in that: include: A first signal acquisition module, used to acquire a current state signal of a whole vehicle; the whole vehicle includes the electric trailer; A required torque determination module, used to determine the required torque of the vehicle according to the current state signal, so as to control the start of the vehicle; A second signal acquisition module, used to acquire the charge state of the power battery of the electric trailer when the whole vehicle is started; The working mode determination module is used to determine the working mode of the electric trailer according to the charge state, and the working mode includes an auxiliary driving mode, an energy recovery mode, a standby mode and a charging mode.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the control method of the electric trailer working mode according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the control method of the electric trailer working mode according to any one of claims 1 to 7 when executed.

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