Storage battery charging method, device and equipment for engineering vehicle and storage medium

Abstract

The invention provides a storage battery charging method, device and equipment for an engineering vehicle and a storage medium. The method relates to the technical field of engineering vehicles, and comprises the following steps: a vehicle control unit can obtain the current voltage of a storage battery in response to a storage battery voltage monitoring instruction sent by a remote communication terminal TBOX; if the current voltage is smaller than or equal to a preset voltage threshold value and a charging condition is met, controlling the power battery to charge the storage battery; wherein the charging condition is at least used for restraining the internal environment of a storage battery cabin of the engineering vehicle and / or vibration of a power battery box body. The method is used for achieving the purpose of preventing deep power shortage of the storage battery, meanwhile, the safety of the charging process is ensured under the extreme working condition, and the starting reliability of the vehicle is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of engineering vehicles, and in particular to a method, device, equipment and storage medium for charging a battery of an engineering vehicle. Background Art

[0002] With the increasing environmental protection requirements and the development of electrification technology, engineering vehicles are undergoing a transformation from traditional fuel power to electric drive. Electric-powered engineering vehicles (such as electric excavators, electric loaders, etc.) are widely used in mines, ports and other scenarios due to their low noise and high energy efficiency advantages.

[0003] Conventional engineering vehicles have a relatively complex electrical and electronic architecture, integrating numerous components (such as anti-theft systems and remote communication modules) that must maintain low-power operation even when the vehicle's main power is turned off. These components, when operating for extended periods, gradually deplete the battery, leading to severe battery depletion and potentially preventing the vehicle from starting. Summary of the Invention

[0004] The present application provides a battery charging method, device, equipment and storage medium for an engineering vehicle, which are used to prevent the battery from being exhausted due to long-term operation of low-power components, thereby ensuring reliable starting of the engineering vehicle.

[0005] In a first aspect, the present application provides a method for charging a battery of an engineering vehicle, which is applied to a vehicle controller, comprising:

[0006] In response to a battery voltage monitoring instruction sent by the remote communication terminal TBOX, obtain the current voltage of the battery used to provide low-voltage power supply for the engineering vehicle;

[0007] If the current voltage is less than or equal to a preset voltage threshold and the charging condition is met, the power battery is controlled to charge the storage battery; wherein the charging condition is at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

[0008] In a possible implementation manner, the power replenishment condition includes one or more of the following conditions:

[0009] The rear hood of the engineering vehicle is in a closed state;

[0010] The vibration acceleration of the power battery box is less than or equal to the preset acceleration threshold;

[0011] The temperature inside the battery compartment is greater than or equal to a preset first temperature threshold and less than or equal to a preset second temperature threshold; the preset first temperature threshold is less than the preset second temperature threshold;

[0012] The relative humidity of the battery box is less than or equal to the preset humidity threshold;

[0013] The power level of the power battery is greater than the preset power threshold;

[0014] The downtime of the engineering vehicle is less than a first preset time period;

[0015] The charging cable is not connected.

[0016] In a possible implementation, if the current voltage is less than or equal to a set threshold and the charging condition is met, controlling the power battery to charge the storage battery includes:

[0017] When it is detected that the current voltage of the battery is less than or equal to the set threshold and the recharging condition is met, a recharging prompt message is generated and broadcast;

[0018] When the broadcasting time of the power replenishment prompt information reaches a second preset time, the power battery is controlled to replenish power for the storage battery.

[0019] In one possible implementation, the method further includes:

[0020] After the charging is completed, the remaining power of the power battery, the current voltage of the battery, and the next charging time are sent to the user's terminal device.

[0021] In one possible implementation, the method further includes:

[0022] If a fault occurs during the process of controlling the power battery to replenish the storage battery, repair the fault;

[0023] If the fault is successfully repaired within a preset number of times, then after the fault is repaired, continue to control the power battery to recharge the storage battery;

[0024] If the fault cannot be successfully repaired within a preset number of times, the charging circuit between the power battery and the storage battery is disconnected to control the power battery to stop charging the storage battery.

[0025] In one possible implementation, the method further includes:

[0026] During the process of controlling the power battery to replenish power for the storage battery, if the remaining power of the power battery is less than or equal to a preset power threshold, an alarm message is generated and sent to the terminal device.

[0027] In a second aspect, the present application provides a battery charging device for an engineering vehicle, the device comprising:

[0028] an acquisition module, configured to acquire the current voltage of a battery in response to a battery voltage monitoring instruction sent by the remote communication terminal TBOX, wherein the battery is used to provide low-voltage power supply for the engineering vehicle;

[0029] A processing module is used to control the power battery to recharge the storage battery if the current voltage is less than or equal to a preset voltage threshold and the recharging condition is met; wherein the recharging condition is at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

[0030] In a third aspect, the present application provides a vehicle controller, comprising: a memory, a processor;

[0031] The memory stores computer-executable instructions;

[0032] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0033] In a fourth aspect, the present application provides an engineering vehicle, comprising the vehicle controller as described in the third aspect.

[0034] In a fifth aspect, the present application provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect and / or various possible implementation methods of the first aspect as described above.

[0035] In a sixth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementations of the first aspect.

[0036] The battery recharging method, apparatus, device, and storage medium for engineering vehicles provided herein obtain the current battery voltage in response to a battery voltage monitoring command transmitted by a remote communication terminal. When the current voltage is less than or equal to a preset voltage threshold and meets at least the recharging conditions for limiting the internal environment of the engineering vehicle's battery compartment and / or the vibration of the power battery housing, the method controls the power battery to recharge the battery. This process not only effectively prevents deep battery depletion but also ensures the safety of the recharging process under extreme operating conditions, enhancing vehicle starting reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] Figure 1A schematic diagram of an application scenario provided in an embodiment of the present application;

[0039] Figure 2 A flow chart of a first embodiment of a method for charging a battery of an engineering vehicle provided in this application;

[0040] Figure 3 A flow chart of a second embodiment of a method for charging a battery of an engineering vehicle provided in this application;

[0041] Figure 4 A flow chart of a third embodiment of the battery charging method for an engineering vehicle provided in this application;

[0042] Figure 5 A schematic diagram of a flow chart of an example of battery charging for an engineering vehicle provided in an embodiment of the present application;

[0043] Figure 6 A schematic diagram of the structure of a battery charging device for an engineering vehicle provided in an embodiment of the present application;

[0044] Figure 7 A schematic diagram of the structure of the vehicle controller provided in an embodiment of the present application.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0047] In the field of modern engineering vehicles, electric engineering vehicles are increasingly used. Electric engineering vehicles are usually equipped with a large number of electronic control units (ECUs), sensors and remote communication modules. After the entire vehicle is powered off, it still needs batteries to power it to ensure normal operation. When engineering vehicles (such as electric excavators, electric loaders, etc.) are parked for a long time due to project shutdowns, seasonal idleness, etc., the low-voltage battery will continue to discharge, resulting in deep power loss, causing control system paralysis, engineering vehicle inability to start and other problems.

[0048] Existing intelligent charging solutions for new energy passenger vehicles, such as reverse charging from the power battery to the storage battery, have significant limitations in the construction vehicle sector. For example, in new energy passenger vehicles, intelligent charging solutions are typically designed for relatively stable and controllable environmental conditions. However, in practice, construction vehicles often need to operate in extreme conditions such as high temperature, severe cold, and humidity, which places higher demands on existing intelligent charging solutions.

[0049] In response to the above problems, the inventors considered that when recharging the batteries of engineering vehicles, recharging conditions for constraining the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box can be added to improve the adaptability and reliability of intelligent recharging in extreme environments. Based on this, the inventors found after many experiments that the vehicle controller can respond to the battery voltage monitoring instruction sent by the remote communication terminal TBOX to obtain the current voltage of the battery, and control the power battery to recharge the battery when the current voltage is less than or equal to the preset voltage threshold and the recharging conditions are met; wherein the recharging conditions are at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box to ensure that the recharging operation is performed under safe and stable conditions. Based on this, the present application proposes a battery recharging method for engineering vehicles, which can not only effectively prevent the battery from being deeply depleted, but also ensure the safety of the recharging process under extreme working conditions.

[0050] Figure 1 This is a schematic diagram of the application scenario provided by the embodiment of this application. Figure 1 The engineering vehicle can be equipped with a vehicle controller, a power battery, and a storage battery. When the vehicle controller detects that the current voltage of the battery is less than or equal to the preset voltage and meets the charging conditions, it can control the power battery to recharge the battery.

[0051] For example, if the vehicle controller detects that the current voltage of the battery is 18 volts (V), which is less than the preset voltage of 20V, and the vibration acceleration of the power battery box is 0g, which is less than the preset acceleration threshold of 5g, the power battery can be controlled to recharge the battery.

[0052] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0053] Figure 2 This is a flow chart of the first embodiment of the battery charging method for engineering vehicles provided in this application. Figure 2 , the method is applied to the vehicle controller and may include:

[0054] S201 . Responding to a battery voltage monitoring instruction sent by a remote communication terminal TBOX, obtaining a current battery voltage.

[0055] The execution entity of the embodiments of this application may be a vehicle controller or a battery charging device for an engineering vehicle incorporated into the vehicle controller. The battery charging device for an engineering vehicle may be implemented using software or a combination of software and hardware. The battery charging device for an engineering vehicle may be a processor within the vehicle controller. For ease of understanding, the technical solution of this application will be described below using the vehicle controller as an example.

[0056] In this step, the vehicle controller can obtain the current voltage of the battery in response to the battery voltage monitoring command periodically sent by the TBOX. The battery is used to provide low-voltage power for the engineering vehicle.

[0057] In an optional implementation, the battery can power key low-voltage control components such as the vehicle control unit (VCU) and battery management system (BMS). After passing self-test, these low-voltage control components can issue a command to close the main contactor (relay) of the high-voltage system to complete the high-voltage power-up of the engineering vehicle.

[0058] Furthermore, after the high voltage of the engineering vehicle is powered on, the DC / DC converter (DCDC converter) starts working, converting the high voltage DC power (such as 400V) into low voltage DC power (such as 24V), thereby powering the low voltage electrical system of the engineering vehicle (lights, instruments, 24V battery itself, etc.).

[0059] Optionally, the TBOX can adopt a self-wake-up strategy to periodically send battery voltage monitoring commands to the VCU. This periodic voltage monitoring can track the battery status while limiting the TBOX wake-up time, thereby reducing the additional battery voltage loss caused by continuous TBOX activity.

[0060] For the self-wake-up strategy, the TBOX can be woken up at a preset period by building a real-time clock into the TBOX. For example, the preset period can be 30 minutes.

[0061] In an optional embodiment, the engineering vehicle generally adopts a 24V low-voltage electrical system, and the nominal voltage of the battery is 24V.

[0062] For example, the VCU may obtain the current battery voltage of 18V in response to the battery voltage monitoring instruction sent by the TBOX.

[0063] S202: If the current voltage is less than or equal to the preset voltage threshold and the charging condition is met, control the power battery to charge the storage battery.

[0064] In this step, the VCU can control the power battery to recharge the battery when the current voltage obtained is less than or equal to the preset voltage threshold and meets the recharging conditions for at least restraining the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

[0065] The preset voltage threshold may be the minimum voltage required to power on and start the engineering vehicle. Optionally, the preset voltage threshold may be set based on the actual starting requirements of the engineering vehicle. For example, the preset voltage threshold may be 20V.

[0066] During the use of construction vehicles, there are often harsh working conditions such as high temperature, severe cold, humidity, or high vibration intensity of external construction machinery. Therefore, when recharging the battery, recharging conditions can be added to restrict the internal environment of the battery compartment of the construction vehicle and / or the vibration of the power battery box.

[0067] Optionally, the internal environment of the battery compartment may include the compartment temperature and the relative humidity of the battery box. The relative humidity of the battery box may refer to the percentage of the water vapor content in the air inside the battery box to the maximum water vapor capacity (saturated water vapor capacity) at the current temperature.

[0068] For example, at the current moment, the temperature inside the battery compartment is 40 degrees Celsius (°C), and the relative humidity of the battery box is 30%.

[0069] Optionally, the vibration of the power battery housing may refer to mechanical vibration and impact caused by external excitation. For example, the vibration acceleration of the power battery housing may be 4g, where "g" is the gravitational acceleration constant, which is 9.8m / s².

[0070] For example, the VCU can control the power battery to recharge the storage battery based on the current voltage of 18V being less than the preset voltage threshold of 20V and the vibration acceleration of the power battery box of 4g being less than the preset acceleration threshold of 5g.

[0071] In an embodiment of the present application, the vehicle controller can receive and respond to a battery voltage monitoring command sent by the TBOX to obtain the current battery voltage. When the current voltage is less than or equal to a preset voltage threshold and satisfies at least a recharging condition for limiting the internal environment of the engineering vehicle's battery compartment and / or the vibration of the power battery housing, the controller controls the power battery to recharge the battery. In this process, recharging the engineering vehicle's battery incorporates a recharging condition for limiting the internal environment of the engineering vehicle's battery compartment and / or the vibration of the power battery housing, enabling safe recharging of the engineering vehicle under extreme operating conditions and ensuring reliable starting of the engineering vehicle.

[0072] exist Figure 2 Based on the embodiment shown below, combined with Figure 3 , the battery charging method of the above-mentioned engineering vehicle is further described in detail.

[0073] Figure 3 This is a flow chart of the second embodiment of the battery charging method for engineering vehicles provided in this application. Figure 3 , the method may include:

[0074] S301 . Responding to a battery voltage monitoring instruction sent by a remote communication terminal TBOX, obtaining a current battery voltage.

[0075] S302: When it is detected that the current voltage of the battery is less than or equal to a set threshold and the recharging condition is met, generate and broadcast a recharging prompt message.

[0076] In this step, the VCU can generate and broadcast a charging prompt message based on the fact that the current voltage of the monitored battery is less than or equal to the set threshold and meets the charging conditions for at least restraining the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

[0077] In an optional embodiment, the power replenishment condition includes one or more of the following conditions:

[0078] 1) The rear hood of the engineering vehicle is in the closed state;

[0079] 2) The vibration acceleration of the power battery box is less than or equal to the preset acceleration threshold;

[0080] 3) The temperature inside the battery compartment is greater than or equal to a preset first temperature threshold and less than or equal to a preset second temperature threshold; the preset first temperature threshold is less than the preset second temperature threshold;

[0081] 4) The relative humidity of the battery box is less than or equal to the preset humidity threshold;

[0082] 5) The power level of the power battery is greater than the preset power threshold;

[0083] 6) The downtime of the engineering vehicle is less than the first preset time;

[0084] 7) The charging gun is not connected.

[0085] If the rear hood of an engineering vehicle is in the closed state, the specific signal provided by the electronic lock can be used to determine whether the rear hood is in the closed state. When the electronic lock reports that it is in the "locked" state (usually indicated by status word information), it can be determined that the rear hood is closed and locked.

[0086] For example, an electronic lock can be connected to the engineering vehicle's communication network (such as the CAN bus) as an intelligent node. When the lock tongue is locked in place, the ECU used to control the electronic lock can actively send a data frame containing its status information via the CAN bus. A specific byte of this data frame can contain a clear "Lock_Status" status bit (for example, using the binary value 01 or the status word 0x01 to indicate "locked"). The VCU parses this status word as "locked" and confirms that the rear hood is closed. For example, the VCU receives a CAN message with an ID of 0x18FF2D01, in which the value of the 4th bit of the 2nd byte of its data field is 0001 (binary). The parsing rules define this value as indicating that the rear hood is "locked successfully."

[0087] Optionally, the preset acceleration threshold for determining the vibration acceleration of the power battery housing can be pre-set based on user needs, power battery safety limits, and actual operating data. The power battery safety limit can be determined based on the vibration resistance of the battery cells, connectors, and power battery housing, combined with a safety margin. Actual operating data can be determined based on the peak vibration values ​​measured by an engineering vehicle in the most severe scenarios (e.g., mine pits, bumpy roads). For example, the preset acceleration threshold could be 5g.

[0088] Optionally, the preset value of the downtime of the engineering vehicle (ie, the first preset time) can be set according to the actual needs of the user. For example, the first preset time is 6 months.

[0089] For construction vehicle downtime, the system can detect when the key switch is turned off, an emergency stop is triggered, the power source stops, and there is no operating signal. This determines the start of the downtime and starts timing from this point. The downtime ends when the power source is restarted or the operating signal is restored. The time difference is accurately calculated and recorded as the downtime duration.

[0090] Regarding the charging reminder message, it can be to remind relevant personnel that the construction vehicle is about to start charging, and please pay attention to safety. For example, the charging reminder message can be "Please note that the construction vehicle is starting and will soon use high voltage to charge the battery."

[0091] In a specific embodiment, the recharging prompt information can be broadcasted by the VCU controlling a voice broadcast device (such as a built-in speaker in the cab). Optionally, when broadcasting the recharging prompt information, the VCU can also simultaneously control the flashing warning light set on the engineering vehicle to flash.

[0092] In another optional embodiment, the battery may be composed of at least two battery packs connected in parallel, and the charging conditions may further include:

[0093] The voltage difference between the battery groups in the battery is less than or equal to the preset voltage difference;

[0094] The internal resistance difference between the battery packs in the battery is less than or equal to a preset percentage (for example, 10%) of the average internal resistance of all parallel battery packs.

[0095] For example, if the battery is designed for 24V and consists of two 12V battery packs connected in parallel, the recharging condition can also include that the voltage difference between the two parallel battery packs is less than or equal to a preset voltage difference. Assuming the preset voltage difference is 2V, the voltage difference between the two parallel battery packs should be less than or equal to 2V in the recharging condition for the engineering vehicle.

[0096] For example, if the battery is designed for 24V and consists of two 12V battery packs connected in parallel, the recharging condition can also include that the internal resistance difference between the two parallel battery packs is less than or equal to 10% of the average internal resistance of all parallel battery packs. Assuming the internal resistance of the two battery packs is 0.2 ohms and 0.22 ohms, respectively, the average internal resistance is 0.21 ohms. For recharging construction vehicles, the internal resistance difference between the two parallel battery packs should be less than or equal to 0.021 ohms (10% of 0.21 ohms).

[0097] It should be noted that, on the basis of the above-mentioned power replenishment conditions, basic conditions that affect the power replenishment of the project can also be added.

[0098] For example, before enabling automatic recharging, the user's operating permissions and the safety of the construction vehicle may also be considered. Ensure that the user has authorized the construction vehicle to enable the automatic recharging function. If authorization is not obtained, the VCU will not initiate automatic recharging.

[0099] For example, when a DCDC converter failure or a high voltage power failure is detected, the power replenishment operation will be prohibited to prevent possible electrical hazards and equipment damage.

[0100] For example, a charging reminder message can be generated and broadcasted when the current voltage of 18V is less than a preset voltage threshold of 20V and the charging condition is met. The charging condition can be that the temperature inside the battery compartment is 40°C, greater than a preset first temperature threshold of -15°C, and less than a preset second temperature threshold of 50°C. The generated charging reminder message can be "Attention, battery charging is about to begin."

[0101] S303: When the broadcasting duration of the charging prompt information reaches a second preset duration, controlling the power battery to charge the storage battery.

[0102] In this step, the VCU may determine that the charging operation can be performed when the broadcasting duration of the charging prompt information reaches a second preset duration, and control the power battery to charge the storage battery.

[0103] Optionally, the second preset time length can be preset according to user needs. For example, the second preset time length is 10 seconds (s).

[0104] For example, when the broadcast duration of the charging prompt message "Please note that the battery charging operation is about to begin" reaches 10 seconds, the power battery is controlled to charge the battery.

[0105] S304: After the charging is completed, the remaining power of the power battery, the current voltage of the storage battery, and the next charging time are sent to the user's terminal device.

[0106] In this step, after the power battery finishes recharging the storage battery, the VCU can send the remaining power of the power battery, the current voltage of the storage battery, and the next recharging time to the user's terminal device, helping the user to better manage the battery status of the engineering vehicle and plan future recharging operations.

[0107] Optionally, the VCU can predict the next time a recharge is required by comprehensively analyzing the remaining power of the current power battery, the user's driving habits, historical energy consumption data, and future work plans.

[0108] The terminal device can be a smartphone, tablet, or smartwatch. A charging application (APP) can be run on the terminal device. Users can use the app to view the remaining power battery charge and current battery voltage, helping to understand the vehicle's endurance and battery health. Furthermore, after a charging session is complete, the app displays the next charging time, helping users plan charging operations in advance, coordinate work start times, and avoid unnecessary waiting.

[0109] Optionally, during the battery charging process, a prompt message indicating that the battery is being charged can be displayed through the APP, allowing users to understand the charging progress and status in real time, thereby improving the convenience and efficiency of users' battery management of engineering vehicles.

[0110] In an optional implementation, the VCU can also transmit the remaining power battery charge, current battery voltage, and next recharge time to the cloud server via the TBOX. Leveraging cloud server big data analysis and machine learning technology, it provides more accurate recharge recommendations and optimization strategies, thereby improving battery management efficiency.

[0111] For example, after the recharge is completed, the VCU can send the user's smartphone the remaining power of the power battery, which is 80%, the current voltage of the battery, which is 24V, and the next recharge time is 10 days later.

[0112] In an embodiment of the present application, the VCU can obtain the current battery voltage in response to a battery voltage monitoring instruction sent by the TBOX. When the current battery voltage is detected to be less than or equal to a set threshold and the recharging conditions are met, a recharging prompt message can be generated and broadcast. When the broadcast duration of the recharging prompt message reaches a second preset duration, the power battery can be controlled to recharge the battery. In the above process, through automatic monitoring and intelligent control, the battery can be recharged in a timely manner to ensure the normal operation of the engineering vehicle.

[0113] Furthermore, the battery charging method for construction vehicles provided in the embodiments of this application can also send the remaining power battery charge, current battery voltage, and next charging time to the user's terminal device after charging is completed. Users can obtain detailed battery status information and charging recommendations through the terminal device, more effectively managing the battery health and work schedule of construction vehicles, and improving the user experience.

[0114] Figure 4 This is a flow chart of the third embodiment of the battery charging method for engineering vehicles provided in this application. Figure 4 Based on any of the above embodiments, the battery charging method for an engineering vehicle may further include:

[0115] S401. If a fault occurs during the process of controlling the power battery to replenish power for the storage battery, the fault is repaired.

[0116] In this step, if the VCU detects a fault while controlling the power battery to recharge the storage battery, it can attempt to repair the fault.

[0117] During the recharging process, faults can generally be categorized as software and hardware. Software faults may involve system errors, communication interruptions, or incorrect parameter settings, while hardware faults may include sensor failure, circuit faults, or connection issues. To effectively address these faults, the engineering vehicle's self-diagnostic module can be used to comprehensively analyze and locate the fault using diagnostic algorithms and a fault code library, allowing for the implementation of appropriate remedial measures.

[0118] S402: If the fault is successfully repaired within the preset number of times, after the fault is repaired, continue to control the power battery to recharge the storage battery.

[0119] Optionally, the preset number of times can be preset according to user needs. For example, the preset number of times is 3 times.

[0120] For example, the VCU calls the self-diagnosis module of the engineering vehicle and successfully repairs the fault within a preset number of times (three times). After the fault is repaired, it can continue to control the power battery to recharge the battery.

[0121] S403: If the fault cannot be repaired successfully within the preset number of times, the charging circuit between the power battery and the storage battery is disconnected to control the power battery to stop charging the storage battery.

[0122] Optionally, the charging circuit may be a high-voltage charging circuit between the power battery and the DCDC converter, or a low-voltage charging circuit between the DCDC converter and the battery.

[0123] For example, the VCU calls the self-diagnosis module of the engineering vehicle. If the fault is not successfully repaired within a preset number of times (three times), the high-voltage charging circuit between the power battery and the storage battery can be disconnected to control the power battery to stop recharging the storage battery.

[0124] In an optional embodiment, if the fault cannot be repaired successfully within a preset number of times, a command may be sent to the TBOX to stop monitoring the battery voltage, thereby reducing the voltage demand of the TBOX on the battery, protecting the remaining voltage of the battery, and extending its service life.

[0125] In an optional embodiment, whether to control the power battery to stop replenishing power for the storage battery can also be determined based on the duration of repairing the fault and a preset third duration.

[0126] If the duration of the fault is less than or equal to the third preset time, after the fault is repaired, the power battery continues to be controlled to recharge the storage battery; if the duration of the fault is greater than the third preset time, the charging circuit is disconnected to control the power battery to stop recharging the storage battery.

[0127] In an embodiment of the present application, when a fault is detected while the power battery is being controlled to recharge the storage battery, an attempt can be made to repair the fault. If the fault is successfully repaired within a preset number of times, the power battery can be controlled to continue recharging the storage battery after the fault is repaired. If the fault is not successfully repaired within the preset number of times, the charging circuit between the power battery and the storage battery can be disconnected, stopping the power battery from recharging the storage battery. In this process, detected faults can be monitored and repaired a limited number of times during the recharging process, thereby improving the reliability and efficiency of the recharging process.

[0128] In one possible design, during the process of controlling the power battery to recharge the storage battery, if the remaining power of the power battery is less than or equal to a preset power threshold, an alarm message is generated and sent to the terminal device.

[0129] Optionally, the method for sending warning information may include, but is not limited to, SMS notification and / or phone call notification. For example, when the remaining power battery charge is 29%, which is less than the preset power threshold of 30%, a text message reminder may be sent to the user's smartphone. The text of the SMS reminder may be "The power battery charge is less than 30%. Please find a charging station for the engineering vehicle in time."

[0130] In addition, the warning information sent to the terminal device can also include the current location of the construction vehicle, allowing users to quickly locate the construction vehicle and take appropriate measures. The current location of the construction vehicle can be obtained through the Global Positioning System (GPS) and presented in the warning message as an address or map link, thereby improving user response efficiency and convenience.

[0131] Optionally, when the remaining power of the power battery is less than or equal to a preset power threshold, the circuit that supplies power to the low-voltage electrical system of the engineering vehicle from the battery can be disconnected, thereby reducing the energy consumption of non-critical equipment (such as auxiliary lighting) and providing the necessary power reserve for starting the engineering vehicle.

[0132] In an embodiment of the present application, during the battery charging process, an alarm message can be generated based on the remaining power of the power battery being less than or equal to a preset power threshold, and sent to the terminal device to achieve timely warning and improve the safety and reliability of the use of engineering vehicles.

[0133] Figure 5 This is a flow chart of an example of battery charging for an engineering vehicle provided in an embodiment of the present application. Figure 5 , the process may include:

[0134] S501. The remote communication terminal TBOX wakes up once at a fixed interval.

[0135] For example, a real-time clock can be built into the TBOX to wake up at a preset period.

[0136] S502: Send a battery voltage monitoring instruction to the vehicle controller VCU.

[0137] S503: Determine whether the current voltage of the battery is less than a preset voltage threshold.

[0138] For example, if the current voltage of the battery is 18V, which is less than the preset voltage threshold of 20V, step S504 may be executed; otherwise, step S501 may be executed.

[0139] S504: Whether the power replenishment condition is met.

[0140] Optionally, the recharging condition may include one or more of the following conditions:

[0141] 1) There is no upper high voltage fault in the engineering vehicle.

[0142] 2) The engineering vehicle has not been started; that is, the engine or power system of the engineering vehicle has not been started, and no operation or movement has been performed.

[0143] 3) The power battery has sufficient power; that is, the power of the power battery is greater than the preset power threshold.

[0144] 4) The charging gun is not connected; that is, the charging gun of the charging equipment has not been physically connected to the charging port of the engineering vehicle.

[0145] 5) The rear hood of the engineering vehicle is in the closed position.

[0146] 6) The vibration acceleration of the power battery box is less than or equal to the preset acceleration threshold.

[0147] 7) The temperature inside the battery compartment is greater than or equal to a preset first temperature threshold and less than or equal to a preset second temperature threshold; the preset first temperature threshold is less than the preset second temperature threshold.

[0148] 8) The downtime of the engineering vehicle is less than the first preset time.

[0149] 9) The relative humidity of the battery box is less than or equal to the preset humidity threshold.

[0150] 10) The voltage difference between each battery pack in the battery is less than or equal to the preset voltage difference.

[0151] 11) The internal resistance difference between each battery pack in the battery is less than or equal to the preset proportion of the average internal resistance of all parallel battery packs.

[0152] It should be noted that the more charging conditions are met, the safer and more efficient the charging process will be for construction vehicles. These conditions are set to ensure that the construction vehicle is in a stable and safe state during the charging operation, avoiding possible failures or dangers.

[0153] S505: Announce the power replenishment prompt message and the machine will be started soon.

[0154] In this step, when it is monitored that the current voltage of the battery is less than or equal to the set threshold and the recharging condition is met, a recharging prompt message may be generated and broadcast.

[0155] For example, the charging reminder message can be "Please note that the construction vehicle is starting and will soon be connected to high voltage to charge the battery." The charging reminder message can be broadcast through a voice broadcast device (built-in speaker in the cab) to alert relevant personnel (such as maintenance personnel and operators) that the construction vehicle is about to start.

[0156] Optionally, in addition to the voice broadcast device broadcasting the charging prompt information, the horn can also be gradually sounded to warn relevant personnel that the engineering vehicle is about to start.

[0157] S506: Control the power battery to replenish power for the storage battery.

[0158] In this step, the VCU may control the power battery to recharge the storage battery when the broadcasting duration of the recharging prompt information reaches a second preset duration.

[0159] Optionally, when the recharging conditions are met, the VCU can send a signal to the BMS and DCDC converter to allow recharging. After receiving the recharging signal, the BMS can perform a system self-check to ensure that the battery status is normal; after receiving the recharging signal, the DCDC converter can adjust its own output parameters to ensure that it can provide stable voltage and current to the battery, thereby starting high-voltage recharging operations.

[0160] S507: The battery voltage is higher than a set threshold or the recharging time is reached.

[0161] In this step, when controlling the power battery to charge the storage battery, if the voltage of the storage battery is higher than the set threshold or the charging time is reached, step S508 is executed; otherwise, the power battery is continued to be controlled to charge the storage battery.

[0162] Optionally, the charging time can be preset. For example, the battery charging time is 10 minutes.

[0163] S508: After the charging is completed, the remaining power of the power battery, the current voltage of the battery, and the time of the next charging are uploaded.

[0164] S509: During the power replenishment process, whether there are conditions for stopping the power replenishment.

[0165] Optionally, the charging stop conditions may include: the user manually stops the charging operation, BMS failure, DCDC converter failure, or the vibration acceleration of the power battery box is greater than a preset acceleration threshold.

[0166] For example, in the event of an emergency (such as a power failure) on a construction vehicle, the user can manually stop the charging process immediately using a terminal device running a charging application. Simply selecting "Stop Charging" in the application sends a command to the VCU, interrupting the charging circuit between the power battery and the storage battery.

[0167] Regarding BMS failures, since the BMS is typically used to monitor the battery's status, if the BMS detects a fault and cannot operate normally, it can trigger a halt to recharging to prevent potential battery damage or safety hazards. For example, during recharging, if the BMS detects a sensor failure and cannot accurately read the power battery temperature, the BMS can send a fault signal to the VCU, instructing it to stop recharging.

[0168] Regarding DCDC converter failure, since the DCDC converter is responsible for converting the high-voltage DC power of the power battery into the low-voltage DC power of the storage battery, if the DCDC converter fails, it may cause the battery to overcharge, so it is necessary to stop charging immediately.

[0169] If the vibration acceleration of the power battery box is greater than the preset acceleration threshold, it may be that the engineering vehicle has experienced abnormal vibration during the charging process (such as an accidental collision), causing the power battery box to vibrate violently. After detecting this situation, the VCU can terminate the charging operation.

[0170] S510, engineering vehicle is under high voltage, and power supply stops.

[0171] In an optional embodiment, when a condition for stopping charging exists (i.e., a fault occurs during the process of charging the battery), steps S511 and S512 can be executed to self-repair the fault. If the fault cannot be successfully repaired within a preset number of times, the power battery can be controlled to stop charging the battery.

[0172] In another optional implementation, when the engineering vehicle is under high voltage and the power supply stops, the VCU can also send the reason for stopping the power supply to the cloud server, which may include the specific type of fault and the time of occurrence; after receiving this data, the cloud server can perform further analysis and recording to help remotely monitor the health status of the engineering vehicle and provide data support for subsequent maintenance and optimization.

[0173] S511: Perform self-repair on the fault and determine whether the self-repair is successful.

[0174] S512: If the fault is not successfully repaired within a preset number of times, the power battery is controlled to stop replenishing power for the storage battery.

[0175] For example, if the fault cannot be successfully repaired within three times, the charging circuit between the power battery and the storage battery can be disconnected to control the power battery to stop replenishing power for the storage battery.

[0176] Furthermore, a command to stop monitoring the battery voltage can be sent to the TBOX to reduce the voltage demand of the battery by the TBOX and protect the residual voltage of the battery.

[0177] S513: Determine whether the remaining power of the power battery is less than or equal to a preset power threshold.

[0178] For example, after the power replenishment stops, the remaining power of the power battery may be 20%. Based on the remaining power of the power battery of 20% and the preset power threshold of 30%, it is determined to execute step S514.

[0179] S514: Disconnect the battery from supplying power to the outside, and generate an alarm message to notify the user.

[0180] Optionally, warning messages can be generated in different situations. For example, the VCU can generate a warning message after the charging stops to remind the user of the remaining power of the power battery at the current moment. In addition, during the charging process, if the remaining power of the power battery is less than or equal to the preset power threshold, the VCU can also generate a warning message about insufficient power. These warning messages can be sent to the terminal device to notify the user to take necessary measures. Among them, the form of warning information can be diversified, including but not limited to SMS notifications and / or telephone reminders to ensure that users can understand the power battery status of the engineering vehicle in a timely manner.

[0181] The embodiment of the present application provides an example of battery charging for an engineering vehicle. The specific execution process can refer to the technical solution shown in the above method embodiment. The implementation principle and beneficial effects are similar and will not be repeated here.

[0182] Figure 6 This is a schematic diagram of the structure of the battery charging device for engineering vehicles provided in the embodiment of the present application. Figure 6 The battery charging device 10 of the engineering vehicle may include:

[0183] An acquisition module 11 is configured to acquire the current voltage of a battery in response to a battery voltage monitoring instruction sent by the remote communication terminal TBOX, wherein the battery is used to provide low-voltage power supply for the engineering vehicle;

[0184] The processing module 12 is used to control the power battery to recharge the storage battery if the current voltage is less than or equal to a preset voltage threshold and the recharging condition is met; wherein the recharging condition is at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

[0185] The battery charging device for engineering vehicles provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0186] In a possible implementation manner, the power replenishment condition includes one or more of the following conditions:

[0187] The rear hood of the engineering vehicle is in a closed state;

[0188] The vibration acceleration of the power battery box is less than or equal to the preset acceleration threshold;

[0189] The temperature inside the battery compartment is greater than or equal to a preset first temperature threshold and less than or equal to a preset second temperature threshold; the preset first temperature threshold is less than the preset second temperature threshold;

[0190] The relative humidity of the battery box is less than or equal to the preset humidity threshold;

[0191] The power level of the power battery is greater than the preset power threshold;

[0192] The downtime of the engineering vehicle is less than a first preset time period;

[0193] The charging cable is not connected.

[0194] In a possible implementation, the processing module 12 is specifically configured to:

[0195] When it is detected that the current voltage of the battery is less than or equal to the set threshold and the recharging condition is met, a recharging prompt message is generated and broadcast;

[0196] When the broadcasting time of the power replenishment prompt information reaches a second preset time, the power battery is controlled to replenish power for the storage battery.

[0197] In a possible implementation, the processing module 12 is further configured to:

[0198] After the charging is completed, the remaining power of the power battery, the current voltage of the battery, and the next charging time are sent to the user's terminal device.

[0199] In a possible implementation, the processing module 12 is further configured to:

[0200] If a fault occurs during the process of controlling the power battery to replenish the storage battery, repair the fault;

[0201] If the fault is successfully repaired within a preset number of times, then after the fault is repaired, continue to control the power battery to recharge the storage battery;

[0202] If the fault cannot be successfully repaired within a preset number of times, the charging circuit between the power battery and the storage battery is disconnected to control the power battery to stop charging the storage battery.

[0203] In a possible implementation, the processing module 12 is further configured to:

[0204] During the process of controlling the power battery to replenish power for the storage battery, if the remaining power of the power battery is less than or equal to a preset power threshold, an alarm message is generated and sent to the terminal device.

[0205] The battery charging device for engineering vehicles provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0206] Figure 7 This is a schematic diagram of the structure of the vehicle controller provided in the embodiment of this application. Figure 7 The vehicle controller 20 provided in this embodiment includes: at least one processor 21 and a memory 22. Optionally, the vehicle controller 20 also includes a communication component 23. The processor 21, the memory 22, and the communication component 23 are connected via a bus 24.

[0207] During the specific implementation process, at least one processor 21 executes the computer-executable instructions stored in the memory 22, so that the at least one processor 21 performs the above method.

[0208] The specific implementation process of the processor 21 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0209] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly executed by a hardware processor or by a combination of hardware and software modules within the processor.

[0210] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage.

[0211] A bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be categorized as address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0212] The present application also provides an engineering vehicle, comprising a vehicle body and Figure 7 The vehicle controller shown, through the collaborative operation of its processor, memory, and communication components, can implement the battery charging method for an engineering vehicle described in the above embodiment. Furthermore, the engineering vehicle can choose between pure electric and hybrid drive, flexibly adapting to varying power requirements in various operating environments, thereby improving work efficiency.

[0213] The engineering vehicles provided in this application include but are not limited to the following work vehicles: heavy trucks, trailers, excavators, loaders, anchor miners, bulldozers, road rollers and concrete pump trucks.

[0214] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0215] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0216] The readable storage medium may be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0217] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0218] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0219] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0220] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0221] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media that can store program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0222] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0223] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A method for charging a battery of an engineering vehicle, characterized in that: Applied to vehicle controllers, including: In response to a battery voltage monitoring instruction sent by the remote communication terminal TBOX, obtain the current voltage of the battery used to provide low-voltage power supply for the engineering vehicle; If the current voltage is less than or equal to a preset voltage threshold and the charging condition is met, the power battery is controlled to charge the storage battery; wherein the charging condition is at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

2. The method according to claim 1, characterized in that The recharging conditions include one or more of the following conditions: The rear hood of the engineering vehicle is in a closed state; The vibration acceleration of the power battery box is less than or equal to the preset acceleration threshold; The temperature inside the battery compartment is greater than or equal to a preset first temperature threshold and less than or equal to a preset second temperature threshold; the preset first temperature threshold is less than the preset second temperature threshold; The relative humidity of the battery box is less than or equal to the preset humidity threshold; The power level of the power battery is greater than the preset power threshold; The downtime of the engineering vehicle is less than a first preset time period; The charging cable is not connected.

3. The method according to claim 2, characterized in that If the current voltage is less than or equal to a set threshold and the charging condition is met, controlling the power battery to charge the storage battery includes: When it is detected that the current voltage of the battery is less than or equal to the set threshold and the recharging condition is met, a recharging prompt message is generated and broadcast; When the broadcasting time of the power replenishment prompt information reaches a second preset time, the power battery is controlled to replenish power for the storage battery.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: After the charging is completed, the remaining power of the power battery, the current voltage of the battery, and the next charging time are sent to the user's terminal device.

5. The method according to any one of claims 1 to 3, characterized in that The method further comprises: If a fault occurs during the process of controlling the power battery to replenish the storage battery, repair the fault; If the fault is successfully repaired within a preset number of times, then after the fault is repaired, continue to control the power battery to recharge the storage battery; If the fault cannot be successfully repaired within a preset number of times, the charging circuit between the power battery and the storage battery is disconnected to control the power battery to stop charging the storage battery.

6. The method according to any one of claims 1 to 3, characterized in that The method further comprises: During the process of controlling the power battery to replenish power for the storage battery, if the remaining power of the power battery is less than or equal to a preset power threshold, an alarm message is generated and sent to the terminal device.

7. A battery charging device for an engineering vehicle, characterized in that: The device comprises: an acquisition module, configured to acquire the current voltage of a battery in response to a battery voltage monitoring instruction sent by the remote communication terminal TBOX, wherein the battery is used to provide low-voltage power supply for the engineering vehicle; A processing module is used to control the power battery to recharge the storage battery if the current voltage is less than or equal to a preset voltage threshold and the recharging condition is met; wherein the recharging condition is at least used to constrain the internal environment of the battery compartment of the engineering vehicle and / or the vibration of the power battery box.

8. A vehicle controller, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 6.

9. An engineering vehicle, characterized in that: Including the vehicle controller as claimed in claim 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 6 when executed by a processor.

Images