Energy recovery control method and system, electric engineering machinery and electronic equipment

Abstract

The invention discloses an energy recovery control method and system, electric engineering machinery and electronic equipment, and relates to the technical field of target electric engineering machinery. The method is applied to a target electric engineering machine provided with an energy recovery auxiliary switch, and specifically comprises the following steps: determining whether an electric retarding gear switch of the target electric engineering machine is closed or has a fault, and determining electric braking negative torque based on gear information of the electric retarding gear switch when the electric retarding gear switch works normally; when the electric retarding gear switch is turned off or breaks down, the electric braking negative torque is determined based on the switching strength information of the energy recovery auxiliary switch; and finally, the electric braking negative torque is sent to a motor controller of the target electric engineering machine so that the motor controller can control a driving motor of the target electric engineering machine. Therefore, the problem that the energy recovery function is easy to fail due to the fact that energy recovery control is carried out only by operating an electric retarding gear switch is solved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and more specifically, to an energy recovery control method, system, electric engineering machinery and electronic equipment. Background Art

[0002] The current main method for energy recovery of electric construction machinery is to control it by operating the electric retarder gear switch. This method will result in the inability to perform energy recovery and electric braking when the electric retarder gear switch fails, thereby increasing the energy consumption of the electric construction machinery. Summary of the invention

[0003] In view of this, the embodiments of the present application are dedicated to providing an energy recovery control method, system, electric engineering machinery and electronic equipment to solve the problem that energy recovery control is easily caused to fail by operating an electric retarder gear switch alone.

[0004] In a first aspect, the present invention provides an energy recovery control method, which is applied to a target electric engineering machine, wherein the target electric engineering machine is provided with an energy recovery auxiliary switch, comprising:

[0005] Determining whether the electric retarding gear switch of the target electric engineering machinery is closed or faulty;

[0006] When the electric retarding gear switch works normally, determining the electric braking negative torque based on the gear information of the electric retarding gear switch;

[0007] When the electric retarding gear switch is closed or fails, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch;

[0008] The electric braking negative torque is sent to a motor controller of the target electric engineering machine, so that the motor controller controls the drive motor of the target electric engineering machine.

[0009] In a possible implementation manner, when the electric retarding gear switch is closed or fails, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch includes:

[0010] When the electric retarding gear switch is closed or fails, determining whether the energy recovery auxiliary switch is operating normally;

[0011] If the energy recovery auxiliary switch works normally, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch;

[0012] If the energy recovery auxiliary switch is closed or fails, the electric braking negative torque is determined based on a preset minimum energy recovery intensity.

[0013] In a possible implementation manner, determining the electric braking negative torque includes:

[0014] Acquiring status information of the target electric engineering machinery;

[0015] Based on the state information of the target electric engineering machine, determining whether the target electric engineering machine is in a coasting state;

[0016] When the target electric engineering machine is in the coasting state, determining the electric braking negative torque based on a preset rule;

[0017] The preset rules include:

[0018] When the electric retarding gear switch is operating normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the gear information of the electric retarding gear switch;

[0019] When the electric retarding gear switch is turned off or fails and the energy recovery auxiliary switch is working normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the switch intensity information of the energy recovery auxiliary switch;

[0020] When the electric retarding gear switch and the energy recovery auxiliary switch are turned off or fail, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

[0021] In a possible implementation manner, the state information of the target electric engineering machine includes: vehicle speed information, gear information, throttle information and brake information.

[0022] In a possible implementation manner, determining whether the electric retarding gear switch of the target electric engineering machine is closed or faulty includes:

[0023] Acquiring an electrical signal of the electric retarding gear switch;

[0024] When the electrical signal is 0 or fails, it is determined that the electric retarding gear position switch is closed or fails.

[0025] In a possible implementation manner, the motor controller controls the drive motor, including:

[0026] receiving the electric braking negative torque;

[0027] comparing the electric braking negative torque with the actual maximum feedback torque;

[0028] If the electric brake negative torque is greater than the actual maximum feedback torque, controlling the drive motor to execute the actual maximum feedback torque;

[0029] If the electric braking negative torque is less than the actual maximum feedback torque, the driving motor is controlled to execute the electric braking negative torque.

[0030] In a second aspect, the present invention provides an energy recovery control system, comprising: an electric retarding gear switch and a vehicle controller of a target electric engineering machine, and an energy recovery auxiliary switch configured on the target electric engineering machine;

[0031] Among them, the vehicle controller is used to determine whether the electric retarder gear switch of the target electric engineering machinery is closed or faulty; and when the electric retarder gear switch is working normally, the electric braking negative torque is determined based on the gear information of the electric retarder gear switch; when the electric retarder gear switch is closed or faulty, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch; the electric braking negative torque is sent to the motor controller of the target electric engineering machinery, so that the motor controller controls the drive motor of the target electric engineering machinery.

[0032] In a possible implementation manner, an energy recovery control system provided by the present invention further includes: a motor controller of the target electric engineering machinery;

[0033] The motor controller is used to compare the electric braking negative torque with the actual maximum feedback torque after receiving the electric braking negative torque, and control the drive motor to execute the actual maximum feedback torque when the electric braking negative torque is greater than the actual maximum feedback torque; and control the drive motor to execute the electric braking negative torque when the electric braking negative torque is less than the actual maximum feedback torque.

[0034] In a third aspect, the present invention provides an engineering machine, comprising an engineering machine body and the energy recovery control system provided in the second aspect of the present invention.

[0035] According to the energy recovery control method provided by the present invention, by being applied to a target electric engineering machinery equipped with an energy recovery auxiliary switch, when it is determined that the electric retarding gear switch of the target electric engineering machinery is working normally, the electric braking negative torque can be determined normally based on the gear information of the electric retarding gear switch, and when the electric retarding gear switch is closed or fails, the electric braking negative torque can also be determined based on the switch strength information of the energy recovery auxiliary switch, and then the determined electric braking negative torque is sent to the motor controller of the target electric engineering machinery, which is used for the motor controller to control the drive motor of the target electric engineering machinery, that is, to perform energy recovery and electric braking. Therefore, when the electric retarding gear switch fails, the target engineering machinery can also be guaranteed to perform energy recovery normally, thereby reducing the energy consumption of the electric engineering machinery, that is, reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0037] Figure 1 Shown is a flow chart of an energy recovery control method provided by an embodiment of the present invention.

[0038] Figure 2 The figure shows a flow chart of applying the energy recovery control method provided by an embodiment of the present invention to provide an abnormal temperature rise warning for the water circuit of the thermal management system of the whole vehicle.

[0039] Figure 3 Shown is a structural diagram of an online diagnosis system for high-temperature faults in water circuits of a thermal management system provided by an embodiment of the present invention.

[0040] Figure 4 Shown is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0042] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0043] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0044] At present, the energy recovery of electric engineering machinery is mainly achieved by operating the electric retarder gear switch based on the hard-wired connection of the vehicle control unit (VCU) to provide a voltage signal to the VCU, and then the VCU sends the braking torque of the corresponding voltage signal to the motor controller. This energy recovery control method can achieve energy recovery well when the electric retarder gear switch is turned on and functions normally, but when the electric retarder gear switch is turned off or fails, energy recovery cannot be performed. It can be seen that because the energy recovery of existing electric engineering machinery adopts a single opening method, the electric engineering machinery will not be able to recover energy when the electric retarder gear switch fails, thereby increasing the energy consumption of the electric engineering machinery.

[0045] The present invention aims to solve the above-mentioned problems by providing a target energy recovery control method applied to a target electric engineering machinery equipped with an energy recovery auxiliary switch, so that when it is determined that the electric retarding gear switch of the target electric engineering machinery is working normally, the electric braking negative torque can be determined based on the gear information of the electric retarding gear switch; and when the electric retarding gear switch is closed or fails, the electric braking negative torque can also be determined based on the gear information of the energy recovery auxiliary switch, thereby providing the electric braking negative torque to the motor controller of the target electric engineering machinery, so that the motor controller can reliably control the target electric engineering machinery for energy recovery.

[0046] It should be noted that the energy recovery auxiliary switch configured on the target electric engineering machinery is an energy recovery intensity switch having the same energy recovery control function as the electric retarding gear switch configured on the existing engineering machinery.

[0047] In some possible embodiments, the energy recovery auxiliary switch may be integrated into the instrument or central control of the electric engineering machinery, and then the VCU may be enabled to identify different energy recovery intensities by sending a CAN signal to the VCU.

[0048] Furthermore, the energy recovery control method provided by the present invention is executed on an electronic device, which may be a VCU configured on an engineering machine, or an intelligent terminal such as a laptop computer or a smart phone remotely connected to the VCU of the engineering machine, or a server on the network side.

[0049] Based on the above, see Figure 1 , Figure 1 : is a flow chart of an energy recovery control method applied to a target electric engineering machine, that is, an electric engineering machine equipped with an energy recovery auxiliary switch, provided by an embodiment of the present invention. The process of the energy recovery control method provided by this embodiment may include:

[0050] S100: Determine whether the electric retarding gear switch of the target electric engineering machinery is closed or faulty.

[0051] It is understandable that the electric retarding gear switch is usually connected to the VCU of the electric engineering machine through a pin hard wire. Then the VCU distinguishes different energy recovery intensities by identifying the difference in the pin electrical signals.

[0052] Based on this, the VCU can determine whether the electric retarding gear switch of the target electric construction machinery is closed or faulty by obtaining the pin electrical signal.

[0053] That is, in an optional embodiment, determining whether the electric retarding gear switch of the target electric engineering machinery is closed or faulty includes:

[0054] Acquire the electrical signal of the electric retarding gear switch;

[0055] When the electrical signal is 0 or fails, it is determined that the electric retarder position switch is closed or faulty.

[0056] In this embodiment, when the electrical signal is 0 or fails, it indicates that the electric retarding gear switch is closed or faulty.

[0057] Furthermore, the energy recovery control method provided in the embodiment of the present invention ensures reliable energy recovery of the electric engineering machinery by executing step 110 or 120 respectively according to different states of the electric retarder gear switch after determining whether the electric retarder gear switch of the target electric engineering machinery is closed or faulty.

[0058] Specifically, when it is determined that the electric retarding gear position switch is working normally, step 110 is executed, and when it is determined that the electric retarding gear position switch is turned off or fails, step 120 is executed.

[0059] S110: Determine the electric braking negative torque based on the gear position information of the electric retarding gear switch.

[0060] In this embodiment, when it is determined that the electric retarding gear position switch is working normally, the electric braking negative torque can be determined by acquiring the gear position information of the electric retarding gear position switch.

[0061] S120 . Determine the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch.

[0062] In the present embodiment, when it is determined that the electric retarder gear switch is closed or faulty, it means that the electrical signal obtained from the electric retarder gear switch is invalid or is 0. At this time, the electric braking negative torque is determined by obtaining the switch strength information of the energy recovery auxiliary switch, so that the target electric engineering machinery can still perform energy recovery when the electric retarder gear switch is closed or faulty, thereby avoiding the increase of energy consumption of the target engineering machinery due to the closing or failure of the electric retarder gear switch.

[0063] It is understandable that both the electric retarding gear switch and the energy recovery auxiliary switch need to be operated to output the corresponding signal for the VCU to determine the electric braking negative torque. Therefore, when both the electric retarding gear switch and the energy recovery auxiliary switch cannot work normally, for example: the user turns off the electric retarding gear switch and the energy recovery auxiliary switch in order to improve the driving experience; the electric retarding gear switch and the energy recovery auxiliary switch are both faulty, and the energy recovery of the target electric engineering machinery cannot be carried out, so that the target electric engineering machinery cannot reduce energy consumption through energy recovery.

[0064] Based on this, in an optional embodiment, when the electric retarding gear switch is closed or fails, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch, including:

[0065] When the electric retarding gear switch is off or fails, determine whether the energy recovery auxiliary switch is working normally;

[0066] If the energy recovery auxiliary switch works normally, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch;

[0067] If the energy recovery auxiliary switch is closed or fails, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

[0068] In this embodiment, by presetting the minimum energy recovery intensity, energy recovery is still possible when the electric retarding gear switch and the energy recovery auxiliary switch are both closed or fail. That is, by setting the default minimum energy recovery intensity, it is ensured that the target electric engineering machinery can recover energy at all times during the gliding process, thereby further reducing the energy consumption of the target electric engineering machinery.

[0069] In some possible embodiments, an energy recovery auxiliary switch is set through an instrument, and a preset minimum energy recovery intensity is set, so as to ensure that when the electric retarding gear switch is turned off or fails, the energy recovery function of the target electric engineering machinery can still be activated through the energy recovery auxiliary switch, thereby avoiding safety problems caused by failure of the sliding electric brake due to sudden problems in the operation process, such as: failure or damage of the retarding gear signal in heavy-load downhill or long downhill conditions, abnormal braking, etc., thereby enhancing the reliability of the motor participating in the braking. At the same time, the preset minimum energy recovery intensity is set through the instrument to ensure that even if the electric retarding gear switch and the energy recovery auxiliary switch are turned off or fail, there is still energy recovery, thereby further reducing the energy consumption of the target electric engineering machinery.

[0070] It is understandable that the electric engineering machine performs energy recovery in the coasting state. Therefore, it is meaningful to determine the electric brake negative torque only when it is determined that the target electric engineering machine is in the coasting state.

[0071] Based on this, in an optional embodiment, determining the electric braking negative torque includes:

[0072] Acquire status information of target electric construction machinery;

[0073] Based on the state information of the target electric engineering machine, determining whether the target electric engineering machine is in a coasting state;

[0074] When the target electric engineering machine is in a coasting state, the electric brake negative torque is determined based on a preset rule.

[0075] The preset rules include:

[0076] When the electric retarding gear switch is operating normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the gear information of the electric retarding gear switch;

[0077] When the electric retarding gear switch is turned off or fails and the energy recovery auxiliary switch is working normally, the electric braking negative torque is determined based on the preset energy recovery intensity corresponding to the switch intensity information of the energy recovery auxiliary switch;

[0078] When the electric retarding gear switch and the energy recovery auxiliary switch are turned off or fail, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

[0079] Specifically, the state information of the target electric engineering machine can reflect the current state of the target electric engineering machine. For example, when the gear of the target electric engineering machine is in the forward gear and the throttle opening gradually increases, it means that the target electric engineering machine is in the forward and accelerated state. Therefore, by obtaining the state information of the target electric engineering machine, it can be determined whether the target electric engineering machine is in the coasting state.

[0080] Based on this, in an optional embodiment, the state information of the target electric engineering machine includes: vehicle speed information, gear information, throttle information and brake information.

[0081] More specifically, by pre-setting different gears of the electric retarding gear switch and the correspondence between the switch strength information of the energy recovery auxiliary switch and the energy recovery intensity, after determining that the target electric engineering machinery is in a gliding state, the electric braking negative torque can be determined by receiving the gear information of the electric retarding gear switch or the switch strength information of the energy recovery auxiliary switch, or by pre-setting the minimum energy recovery intensity, that is, different energy recovery intensities.

[0082] S130 , sending the electric braking negative torque to a motor controller of the target electric engineering machine, so that the motor controller controls the drive motor of the target electric engineering machine.

[0083] In this embodiment, by applying the energy recovery control method to a target electric engineering machinery equipped with an energy recovery auxiliary switch, the target electric engineering machinery has two different energy recovery opening modes when performing energy recovery, namely, when the electric retarding gear switch is working normally, the electric braking negative torque can be determined based on the gear information of the electric retarding gear switch; and when the electric retarding gear switch is closed or fails, the electric braking negative torque can be determined based on the switch strength information of the energy recovery auxiliary switch, and then the determined electric braking negative torque is sent to the motor controller of the target electric engineering machinery, so that the motor controller can determine the torque used to control the drive motor of the target electric engineering machinery based on the electric braking negative torque, thereby realizing energy recovery during the sliding process of the target electric engineering machinery.

[0084] The energy recovery control method provided in the embodiment of the present invention can activate the energy recovery function of the target electric engineering machinery through the energy recovery auxiliary switch, that is, another energy recovery opening method, when the traditional electric retarding gear switch is closed or fails, thereby avoiding safety problems caused by failure of the coasting electric brake due to sudden problems in the operation process, and enhancing the reliability of the motor participating in braking. At the same time, by setting a preset minimum energy recovery intensity, energy recovery is still possible when both energy recovery opening methods are closed or fail.

[0085] In an optional embodiment, the motor controller controls the drive motor, including:

[0086] receiving electric braking negative torque;

[0087] Compare the electric brake negative torque with the actual maximum feedback torque;

[0088] If the electric brake negative torque is greater than the actual maximum feedback torque, the drive motor is controlled to execute the actual maximum feedback torque;

[0089] If the electric braking negative torque is less than the actual maximum feedback torque, the drive motor is controlled to execute the electric braking negative torque.

[0090] In this embodiment, the motor controller MCU compares its actual maximum feedback torque with the electric brake negative torque (VCU requested torque). If it is smaller than the VCU requested torque, the current actual maximum feedback torque is executed; otherwise, the VCU requested torque is executed.

[0091] Figure 2 This is a specific flow chart of an example of energy recovery control of electric engineering machinery using the energy recovery control method provided by the above embodiment of the present invention, wherein the energy recovery auxiliary switch of the target electric engineering machinery is set through an instrument, and a preset minimum energy recovery intensity is set. Figure 2It can be seen that the energy recovery control of electric engineering machinery using the method provided by the above embodiment of the present invention can be compatible with two different energy recovery opening methods at the same time, that is, the electric retarding gear switch used in the traditional energy recovery control can be preferentially identified, and then when it is determined that the electric retarding gear switch is closed or faulty, on the one hand, the electric retarding gear switch fault prompt is performed by not displaying the icon of the electric retarding gear switch on the instrument; on the other hand, the energy recovery auxiliary switch set by the instrument is identified to continue to activate the energy recovery function, thereby avoiding safety problems caused by the failure of the sliding electric brake and enhancing the reliability of the motor participating in the braking. At the same time, by setting a preset minimum energy recovery intensity, it is ensured that the target electric engineering machinery can always recover energy, thereby further reducing the energy consumption of the target electric engineering machinery.

[0092] An energy recovery control system provided in an embodiment of the present invention is introduced below. The energy recovery control system described below can be considered as a module architecture for implementing an energy recovery control method provided in an embodiment of the present invention; the content described below can be cross-referenced with the above.

[0093] See also Figure 3 , Figure 3 It is a structural block diagram of an energy recovery control system provided by an embodiment of the present invention, the system may include: an electric retarding gear switch 10 and a vehicle controller 20 of a target electric engineering machine, and an energy recovery auxiliary switch 30 configured on the target electric engineering machine;

[0094] Among them, the vehicle controller 20 is used to determine whether the electric retarding gear switch 10 of the target electric engineering machinery is closed or faulty; and when the electric retarding gear switch 10 is working normally, the electric braking negative torque is determined based on the gear information of the electric retarding gear switch 10; when the electric retarding gear switch 10 is closed or faulty, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch 30; the electric braking negative torque is sent to the motor controller 40 of the target electric engineering machinery, and the motor controller 40 is used to control the drive motor 50 of the target electric engineering machinery.

[0095] In an optional embodiment, the system further includes: a motor controller 40 of the target electric engineering machine;

[0096] The motor controller 40 is used to compare the electric braking negative torque with the actual maximum feedback torque after receiving the electric braking negative torque, and control the drive motor 50 to execute the actual maximum feedback torque when the electric braking negative torque is greater than the actual maximum feedback torque; and control the drive motor 50 to execute the electric braking negative torque when the electric braking negative torque is less than the actual maximum feedback torque.

[0097] Optionally, the vehicle controller 20 is specifically used for:

[0098] When the electric retarding gear switch is off or fails, determine whether the energy recovery auxiliary switch is working normally;

[0099] If the energy recovery auxiliary switch works normally, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch;

[0100] If the energy recovery auxiliary switch is closed or fails, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

[0101] Optionally, the vehicle controller 20 is specifically used for:

[0102] Acquire status information of target electric construction machinery;

[0103] Based on the state information of the target electric engineering machine, determining whether the target electric engineering machine is in a coasting state;

[0104] When the target electric engineering machine is in a coasting state, determining an electric brake negative torque based on a preset rule;

[0105] The preset rules include:

[0106] When the electric retarding gear switch is operating normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the gear information of the electric retarding gear switch;

[0107] When the electric retarding gear switch is turned off or fails and the energy recovery auxiliary switch is working normally, the electric braking negative torque is determined based on the preset energy recovery intensity corresponding to the switch intensity information of the energy recovery auxiliary switch;

[0108] When the electric retarding gear switch and the energy recovery auxiliary switch are turned off or fail, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

[0109] Optionally, the status information of the target electric engineering machinery includes: vehicle speed information, gear information, throttle information and brake information.

[0110] Optionally, the vehicle controller 20 is specifically used for:

[0111] Acquire the electrical signal of the electric retarding gear switch;

[0112] When the electrical signal is 0 or fails, it is determined that the electric retarder position switch is closed or faulty.

[0113] Optionally, the motor controller 40 is specifically used for:

[0114] receiving electric braking negative torque;

[0115] Compare the electric brake negative torque with the actual maximum feedback torque;

[0116] If the electric brake negative torque is greater than the actual maximum feedback torque, the drive motor is controlled to execute the actual maximum feedback torque;

[0117] If the electric braking negative torque is less than the actual maximum feedback torque, the drive motor is controlled to execute the electric braking negative torque.

[0118] Optionally, an embodiment of the present invention further provides an electric engineering machine, comprising an electric engineering machine body and an energy recovery control system as provided in any of the above embodiments;

[0119] Among them, an energy recovery auxiliary switch is arranged on the electric engineering machinery body.

[0120] Below, reference Figure 4 To describe the electronic device provided by the embodiment of the present application, the electronic device provided by the embodiment may include: at least one processor 100, at least one communication interface 200, at least one memory 300 and at least one communication bus 400;

[0121] In the embodiment of the present invention, the number of the processor 100, the communication interface 200, the memory 300, and the communication bus 400 is at least one, and the processor 100, the communication interface 200, and the memory 300 communicate with each other through the communication bus 400; obviously, Figure 4 The communication connections shown for the processor 100, the communication interface 200, the memory 300, and the communication bus 400 are merely optional;

[0122] Optionally, the communication interface 200 may be an interface of a communication module, such as an interface of a GSM module; the processor 100 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0123] The memory 300 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0124] The processor 100 is specifically used to execute the application program in the memory to implement the steps of the above energy recovery control method.

[0125] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0126] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0127] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0128] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0129] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0130] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An energy recovery control method, characterized in that: Applied to a target electric engineering machine, the target electric engineering machine is equipped with an energy recovery auxiliary switch, including: Determining whether the electric retarding gear switch of the target electric engineering machinery is closed or faulty; When the electric retarding gear switch works normally, determining the electric braking negative torque based on the gear information of the electric retarding gear switch; When the electric retarding gear switch is closed or fails, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch; The electric braking negative torque is sent to a motor controller of the target electric engineering machine, so that the motor controller controls the drive motor of the target electric engineering machine.

2. The method according to claim 1, characterized in that When the electric retarding gear switch is closed or fails, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch includes: When the electric retarding gear switch is closed or fails, determining whether the energy recovery auxiliary switch is operating normally; If the energy recovery auxiliary switch works normally, determining the electric braking negative torque based on the switch strength information of the energy recovery auxiliary switch; If the energy recovery auxiliary switch is closed or fails, the electric braking negative torque is determined based on a preset minimum energy recovery intensity.

3. The method according to claim 2, characterized in that The determining of the electric brake negative torque comprises: Acquiring status information of the target electric engineering machinery; Based on the state information of the target electric engineering machine, determining whether the target electric engineering machine is in a coasting state; When the target electric engineering machine is in the coasting state, determining the electric braking negative torque based on a preset rule; The preset rules include: When the electric retarding gear switch is operating normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the gear information of the electric retarding gear switch; When the electric retarding gear switch is turned off or fails and the energy recovery auxiliary switch is working normally, the electric braking negative torque is determined based on a preset energy recovery intensity corresponding to the switch intensity information of the energy recovery auxiliary switch; When the electric retarding gear switch and the energy recovery auxiliary switch are turned off or fail, the electric braking negative torque is determined based on the preset minimum energy recovery intensity.

4. The method according to claim 3, characterized in that The state information of the target electric engineering machine includes: vehicle speed information, gear information, throttle information and brake information.

5. The method according to claim 1, characterized in that The step of determining whether the electric retarding gear position switch of the target electric engineering machinery is closed or faulty comprises: Acquiring an electrical signal of the electric retarding gear switch; When the electrical signal is 0 or fails, it is determined that the electric retarding gear position switch is closed or fails.

6. The method according to claim 1, characterized in that The motor controller controls the drive motor, including: receiving the electric braking negative torque; comparing the electric braking negative torque with the actual maximum feedback torque; If the electric brake negative torque is greater than the actual maximum feedback torque, controlling the drive motor to execute the actual maximum feedback torque; If the electric braking negative torque is less than the actual maximum feedback torque, the driving motor is controlled to execute the electric braking negative torque.

7. An energy recovery control system, characterized in that: include: An electric retarding gear switch and a vehicle controller of a target electric engineering machine, and an energy recovery auxiliary switch configured on the target electric engineering machine; Among them, the vehicle controller is used to determine whether the electric retarder gear switch of the target electric engineering machinery is closed or faulty; and when the electric retarder gear switch is working normally, the electric braking negative torque is determined based on the gear information of the electric retarder gear switch; when the electric retarder gear switch is closed or faulty, the electric braking negative torque is determined based on the switch strength information of the energy recovery auxiliary switch; the electric braking negative torque is sent to the motor controller of the target electric engineering machinery, so that the motor controller controls the drive motor of the target electric engineering machinery.

8. The system according to claim 7, characterized in that Also includes: A motor controller of the target electric engineering machinery; The motor controller is used for comparing the electric braking negative torque with the actual maximum feedback torque after receiving the electric braking negative torque, and controlling the drive motor to execute the actual maximum feedback torque when the electric braking negative torque is greater than the actual maximum feedback torque; When the electric braking negative torque is less than the actual maximum feedback torque, the driving motor is controlled to execute the electric braking negative torque.

9. An electric engineering machine, characterized in that: It comprises an engineering machinery body and an energy recovery control system as claimed in claim 7 or 8; Wherein, an energy recovery auxiliary switch is arranged on the electric engineering machinery body.

10. An electronic device, characterized in that: The electronic device comprises: processor; a memory for storing instructions executable by the processor; The processor is used to execute the method according to any one of claims 1 to 6.

Images