Vehicle battery heating control method, device and system, vehicle and storage medium

Abstract

The invention discloses a vehicle battery heating control method, device and system, a vehicle and a storage medium, and relates to the technical field of vehicle battery management. The vehicle comprises a battery, an emergency heating system and a battery heat management system. The emergency heating system and the battery heat management system are both used for heating the battery. The method comprises the steps that when the vehicle is in a low-power-consumption monitoring state, in response to a starting signal, the emergency heating system is started to heat the battery; and under the condition that the real-time temperature of the battery reaches a dischargeable threshold value, the battery heat management system is started to heat the battery, and a heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery. Temperature overshoot caused by inertia or temperature falling caused by direct closing is effectively avoided, and undisturbed switching in the true sense is achieved. And full-flow automatic control from triggering, operation to switching is realized.

Description

Technical Field

[0001] This application relates to the field of vehicle battery management technology, specifically to a vehicle battery heating control method, a vehicle battery heating control device, a vehicle battery heating control system, a vehicle, and a machine-readable storage medium. Background Technology

[0002] Electric vehicles are powered by an onboard power source, using an electric motor to drive the wheels. Because electric vehicles have a relatively smaller environmental impact compared to traditional vehicles, their future is widely viewed as promising. However, electric vehicles face the problem of being unable to operate in cold environments.

[0003] Taking pure electric mining trucks as an example, in open-pit mines, especially in frigid regions, they face the challenge of extreme low temperatures (such as -30℃ or even -40℃). At such low temperatures, the electrolyte viscosity of lithium-ion batteries increases, their activity decreases, and their internal resistance rises sharply, rendering them unable to discharge in any form (i.e., a "no discharge capacity" state). At this time, conventional PTC (positive temperature coefficient) heaters or heat pump air conditioning systems that rely on the battery's own power cannot start, creating a vicious cycle of "needing to heat up to discharge, and needing to discharge to heat up," leading to complete vehicle paralysis and causing huge economic losses.

[0004] Existing solutions involve installing an emergency heating system on the vehicle to provide an independent heat and power source. However, the key to its functionality lies in seamlessly switching with the vehicle's existing system at the appropriate time. Therefore, a dedicated intelligent control strategy for this emergency heating system is urgently needed to fully leverage its effectiveness and ensure the vehicle's uptime and reliability in extremely cold environments. Summary of the Invention

[0005] The purpose of this application is to provide a vehicle battery heating control method, a vehicle battery heating control device, a vehicle battery heating control system, a vehicle, and a machine-readable storage medium to solve the problem of how to seamlessly switch with the vehicle's original system at an appropriate time in the prior art.

[0006] To achieve the above objectives, a first aspect of this application provides a vehicle battery heating control method, wherein the vehicle includes a battery, an emergency heating system, and a battery thermal management system, wherein both the emergency heating system and the battery thermal management system are used to heat the battery; the method includes: When the vehicle is in a low-power monitoring state, in response to the start signal, the emergency heating system is activated to heat the battery; When the real-time temperature of the battery reaches the discharge threshold, the battery thermal management system is activated to heat the battery, and the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery.

[0007] In this embodiment of the application, adjusting the heating strategy of the emergency heating system according to the real-time temperature change of the battery includes: Based on the real-time temperature of the battery and the working status of the battery thermal management system, determine whether the emergency heating system meets the preset switching conditions; If the emergency heating system meets the preset switching conditions, the emergency heating system stops heating the battery. If it is determined that the emergency heating system does not meet the preset switching conditions, the temperature change is determined based on the real-time temperature of the battery, and the heating power of the emergency heating system is controlled based on the temperature change.

[0008] In this embodiment of the application, controlling the heating power of the emergency heating system based on the temperature change includes: When the temperature change meets the first preset temperature condition, the heating power of the emergency heating system is controlled to be reduced to a preset power value. When the temperature change meets the second preset temperature condition, the heating power of the emergency heating system is maintained. When the temperature change meets the third preset temperature condition, the heating power of the emergency heating system is increased.

[0009] In this embodiment of the application, after activating the emergency heating system to heat the battery, the method further includes: Real-time acquisition of temperature data at multiple locations within the battery; The maximum temperature difference was determined based on temperature data from multiple locations within the battery. Based on the maximum temperature difference, adjust the heating operation of the battery thermal management system.

[0010] In this embodiment of the application, adjusting the heating operation of the battery thermal management system includes: Based on the maximum temperature difference, a PID control algorithm is used to adjust the speed of the circulating water pump in the battery thermal management system.

[0011] In this embodiment of the application, the vehicle further includes a battery and an external charging interface, the external charging interface being used to connect to an external power source; Before activating the emergency heating system to heat the battery, the method further includes: If an external power source is confirmed to be available, the emergency heating system shall be powered by the external power source. In the absence of an external power source, the emergency heating system is powered by the battery.

[0012] In this embodiment of the application, it also includes: Real-time acquisition of heating parameters; Based on the heating parameters, it is determined whether the battery has a heating fault; If a heating fault is detected in the battery, a safety shutdown procedure is initiated, and a restart signal is regenerated after a preset interval.

[0013] A second aspect of this application provides a vehicle battery heating control system, including an intelligent control module, an emergency heating system, and a battery thermal management system; Both the emergency heating system and the battery thermal management system are used to heat the vehicle's battery. The intelligent control module is used to activate the emergency heating system to heat the battery in response to a start signal when the vehicle is in a low-power monitoring state; and to activate the battery thermal management system to heat the battery when the real-time temperature of the battery reaches the discharge threshold, and to adjust the heating strategy of the emergency heating system according to the real-time temperature of the battery.

[0014] A third aspect of this application provides a vehicle battery heating control device, wherein the vehicle includes a battery, an emergency heating system, and a battery thermal management system, wherein both the emergency heating system and the battery thermal management system are used to heat the battery; the device includes: The start-up module is used to activate the emergency heating system to heat the battery in response to a start-up signal when the vehicle is in a low-power monitoring state. An adjustment module is used to activate the battery thermal management system to heat the battery when the real-time temperature of the battery reaches the discharge threshold, and to adjust the heating strategy of the emergency heating system according to the real-time temperature of the battery.

[0015] The fourth aspect of this application provides a vehicle in which the vehicle battery is heated using the above-described vehicle battery heating control method.

[0016] A fifth aspect of this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform the aforementioned vehicle battery heating control method.

[0017] Through the above technical solution, when the vehicle is in a low-power monitoring state, in response to the start signal, the emergency heating system is activated to heat the battery. When the real-time temperature of the battery reaches the discharge threshold, the battery thermal management system is activated to heat the battery, and the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery. After reaching the discharge threshold, instead of immediately shutting down the battery thermal management system to heat the battery, the power of the combustion heater is adjusted, effectively avoiding temperature overshoot due to inertia or temperature drop due to direct shutdown, achieving truly seamless switching. This achieves fully automatic control from triggering, operation to switching, greatly improving user experience and system reliability. The power selection logic optimizes the energy usage sequence, extends the independent working time and lifespan of the emergency heating system, and makes energy utilization more efficient.

[0018] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates a flow chart of a vehicle battery heating control method according to an embodiment of this application; Figure 2 A schematic diagram illustrating the flow of a control strategy according to an embodiment of this application is shown. Figure 3 A schematic flowchart of a control strategy according to an embodiment of this application is shown (continued); Figure 4 This schematic diagram illustrates the principle of interaction between an emergency heating system according to an embodiment of this application and a vehicle's conventional system. Figure 5 The schematic diagram illustrates the structure of a vehicle battery heating control device according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures 410 - Startup module; 420 - Adjustment module. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Terminology Explanation: The VCU, or Vehicle Control Unit, is responsible for coordinating and controlling the operation of all subsystems on the vehicle to achieve the driver's intentions and ensure optimal vehicle performance, safety, and energy efficiency.

[0026] BMS, or Battery Management System, monitors the status of a battery to ensure its safe, reliable, and long-lasting operation.

[0027] The PID algorithm, or Proportional-Integral-Derivative controller algorithm, calculates the error between the "target value" and the "actual value" and makes precise and stable adjustments accordingly.

[0028] Please refer to Figures 1-3 , Figure 1 The illustration shows a schematic flowchart of a vehicle battery heating control method according to an embodiment of this application. Figure 2 This illustration schematically shows a flowchart of a control strategy according to an embodiment of the present application. Figure 3 A schematic flowchart illustrating the control strategy according to an embodiment of this application is shown (continued). Figure 1 As shown in the figure, this application provides a vehicle battery heating control method. The vehicle includes a battery, an emergency heating system, and a battery thermal management system. Both the emergency heating system and the battery thermal management system are used to heat the battery. The method includes the following steps: Step 210: When the vehicle is in a low-power monitoring state, in response to the start signal, the emergency heating system is activated to heat the battery; In this embodiment, the battery thermal management system is the vehicle's existing conventional thermal management system, responsible for battery thermal management under normal temperature conditions. The emergency heating system is a complete subsystem that can operate independently in extremely cold environments, and its energy (electricity and heat) does not depend on the vehicle's main power battery. When the vehicle is in an extremely cold environment, it enters a low-power monitoring state. The aforementioned start-up signal can be obtained through remote wireless signals, timed triggers, manual buttons, etc., thus providing users with flexible access points. After the battery thermal management system receives power, the VCU issues two control commands in parallel: first, it controls the combustion heater to ignite and start running, burning fuel to generate a large amount of heat; second, it starts the circulating water pump, pushing the coolant to circulate between the heat exchanger of the combustion heater and the liquid cooling plate in the battery pack. The heated coolant flows through the battery pack liquid cooling plate, continuously and efficiently transferring heat to the battery. It should be noted that the emergency heating system can transfer heat with the battery thermal management system through the same set of battery pack liquid cooling plates and coolant pipelines to heat the battery.

[0029] Please refer to Figure 4 , Figure 4 The diagram illustrates the principle block diagram of the interaction between the emergency heating system and the vehicle's conventional system according to an embodiment of this application.

[0030] The aforementioned emergency heating system includes: 1. Independent power module, which includes an external charging interface (for connecting to a charging station) and an ultra-low temperature start-up battery. This module is the energy foundation for breaking the system's vicious cycle. It supplies power to the intelligent control module itself, the combustion heater, and the circulating water pump simultaneously via a power line, ensuring energy independence throughout the entire chain from control to execution.

[0031] 2. Independent heat source and heat transfer module, which includes an independent heat source and a combustion heater. By receiving ignition commands and operating power control signals from the intelligent control module, it generates a large amount of heat energy by burning fuel and heats the coolant flowing through its internal heat exchanger.

[0032] 3. The heat transfer module includes a circulating water pump and a coolant circuit. The circulating water pump, controlled by the intelligent control module, is responsible for establishing coolant circulation power in emergency mode. The coolant piping forms a complete circulation loop (the flow path is indicated by solid lines with arrows in the diagram), pumping the heated coolant from the heat exchanger of the combustion heater to the liquid cooling plate in the battery pack for heat exchange. After heat exchange, the coolant flows back to the combustion heater for reheating, and the cycle continues.

[0033] The aforementioned battery thermal management system includes: 1. The power battery pack, which includes the battery cells and the liquid cooling plate in close contact with them, is the ultimate target for heat exchange.

[0034] 2. Conventional PTC heater: Under normal circumstances, it is powered by the power battery and is used for battery heating or heat preservation.

[0035] 3. Battery Management System (BMS): Responsible for monitoring the real-time status of the battery and communicating bidirectionally with the intelligent control module.

[0036] In some embodiments, the vehicle further includes a battery and an external charging interface for connecting to an external power source; correspondingly, before activating the emergency heating system to heat the battery, the vehicle further includes: If an external power source is confirmed to be available, the emergency heating system shall be powered by the external power source. In the absence of an external power source, the emergency heating system is powered by the battery.

[0037] In this embodiment, the external power source can be an external charging station, which can be prioritized to conserve the vehicle's dedicated battery resources. The cryogenic starting battery is only activated when the external power source is unavailable. This management is continuous during system operation, and automatically switches back to external power supply if the external power source becomes available again. For example, when the user sends a start signal via a remote terminal (such as a mobile app), a preset timer, or a manual button in the cockpit, the intelligent control module (VCU) is activated. The VCU first executes the intelligent power selection logic: it prioritizes detecting whether the external charging station is available. If available, it provides power throughout the process to conserve the vehicle's energy reserves; if unavailable, it automatically switches to the dedicated cryogenic starting battery. This ensures that the emergency heating system can obtain starting power completely independent of the main power battery under any circumstances, fundamentally breaking the vicious cycle of "electric heating required - thermal discharge required". If the external charging station becomes available during the process of being powered by the cryogenic starting battery, the power source is automatically switched to the external charging station.

[0038] In some embodiments, to address the issue of uneven temperature distribution that is prone to occur in large-capacity battery packs, after activating the emergency heating system to heat the battery, the method further includes: First, temperature data at multiple locations within the battery are acquired in real time; In this embodiment, the temperature data of multiple monitoring points within the battery pack can be obtained in real time through the battery management system (BMS).

[0039] Then, based on temperature data from multiple locations within the battery, the maximum temperature difference is determined; In this embodiment, the maximum temperature difference (ΔT) can be determined based on the maximum and minimum values ​​of temperature data from multiple locations.

[0040] Finally, based on the maximum temperature difference, the heating operation of the battery thermal management system is adjusted.

[0041] In this embodiment, the maximum temperature difference can be compared with a preset temperature difference threshold (such as 5°C). If the preset temperature difference threshold is exceeded, the speed of the circulating water pump can be adjusted, the coolant flow rate can be changed, or the power of the combustion heater can be finely adjusted to optimize the spatial distribution of heat, ensure that the battery pack is heated evenly as a whole, and avoid local overheating or underheating from damaging the battery health.

[0042] In some embodiments, to improve the accuracy of adjustment, adjusting the heating operation of the battery thermal management system includes: adjusting the speed of the circulating water pump in the battery thermal management system using a PID control algorithm based on the maximum temperature difference.

[0043] In this embodiment, the PID control algorithm described above is existing technology and will not be elaborated further.

[0044] By monitoring the temperature uniformity inside the battery pack in real time and using the predictive and corrective capabilities of the PID algorithm, the speed of the circulating water pump is dynamically and smoothly adjusted, thereby maximizing energy savings and improving the overall performance of electric vehicles while ensuring battery safety and longevity.

[0045] Step 220: When the real-time temperature of the battery reaches the discharge threshold, the battery thermal management system is activated to heat the battery, and the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery.

[0046] In this embodiment, the real-time temperature of the battery can be obtained through the vehicle's BMS. Specifically, during the heating process, the VCU obtains the battery's real-time temperature through real-time communication with the BMS. A temperature sensor can be installed on the battery, and the temperature sensor collects temperature data to the BMS in real time. It should be noted that when multiple temperature sensors are present, the real-time temperature of the battery can be the temperature data from multiple monitoring points within the battery pack, or the lowest temperature data can be selected as the real-time temperature. The aforementioned discharge threshold can be preset according to actual conditions, for example, the range of the discharge threshold is -25℃ to -15℃. When the real-time temperature of the battery reaches the preset discharge threshold, the battery thermal management system is activated to heat the battery, but the emergency heating system is not immediately shut down. Instead, the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery to ensure a smooth and stable switching process of the heating system.

[0047] In some embodiments, adjusting the heating strategy of the emergency heating system may involve putting the emergency heating system into a phased power reduction process or a shutdown process. That is, adjusting the heating strategy of the emergency heating system according to the real-time temperature change of the battery includes: First, based on the real-time temperature of the battery and the working status of the battery thermal management system, it is determined whether the emergency heating system meets the preset switching conditions. In this embodiment, the aforementioned preset switching conditions can be preset according to actual conditions. For example, when the battery temperature is stable above the discharge threshold and remains so for a period of time (e.g., 3 minutes), and it is confirmed that the PTC heater in the battery thermal management system can independently maintain the battery temperature.

[0048] Then, if it is determined that the emergency heating system meets the preset switching conditions, the emergency heating system is stopped from heating the battery; In this embodiment, if the preset switching conditions are met, indicating that the battery thermal management system can independently perform thermal management tasks, the emergency heating system can be stopped from heating the battery. Specifically, the VCU can issue a command to completely shut down the combustion heater, and then stop the emergency circulating water pump. Thus, the thermal management task is completely transferred to the vehicle's battery thermal management system, achieving a seamless and uninterrupted mode switch.

[0049] Then, if it is determined that the emergency heating system does not meet the preset switching conditions, the temperature change is determined based on the real-time temperature of the battery, and the heating power of the emergency heating system is controlled based on the temperature change.

[0050] In this embodiment, when the battery's real-time temperature reaches a preset discharge threshold but does not meet the switching conditions, the system does not immediately shut down the emergency heating system. Instead, it enters a phase of adjusting the heating power based on the temperature change to ensure a smooth and stable switching process. The aforementioned temperature change includes the temperature rise rate (dT / dt), which can be calculated based on the battery's real-time temperature. The aforementioned control of the heating power of the emergency heating system can be the control of the output power of the combustion heater of the emergency heating system.

[0051] By stopping the emergency heating system from heating the battery when it meets preset switching conditions, and by controlling the heating power of the emergency heating system based on the real-time temperature of the battery when it does not meet preset switching conditions, the system ensures perfect compatibility and seamless switching between the emergency heating system and the conventional system (battery thermal management system). The triggering and completion of the switching is not based on a single temperature point, but rather on multiple conditions including temperature threshold, stabilization time, and the operating state of the conventional system, ensuring the reliability and robustness of the switching.

[0052] In some embodiments, controlling the heating power of the emergency heating system based on the temperature change includes: When the temperature change meets the first preset temperature condition, the heating power of the emergency heating system is controlled to be reduced to a preset power value. When the temperature change meets the second preset temperature condition, the heating power of the emergency heating system is maintained. When the temperature change meets the third preset temperature condition, the heating power of the emergency heating system is increased.

[0053] In this embodiment, the first, second, and third preset temperature conditions can all be set according to actual conditions. Specifically, if the temperature change meets the first preset temperature condition, it indicates that heating is too rapid, posing a risk of temperature overshoot; if the temperature change meets the second preset temperature condition, it indicates that heating is moderate; and if the temperature change meets the third preset temperature condition, it indicates that battery heat absorption is gradually leveling off. The preset power values ​​can be set according to actual conditions, for example, 50% of the rated power. Maintaining the heating power of the emergency heating system can refer to maintaining or slightly adjusting the heating power. Controlling the increase in the heating power of the emergency heating system can refer to maintaining higher power heating. In specific implementations, the VCU can dynamically adjust the output power of the combustion heater based on the real-time calculated dT / dt.

[0054] For example, if dT / dt>0.5℃ / min, it indicates that the heating is too fast and there is a risk of overshoot. The VCU will immediately reduce the power of the combustion heater to less than 50% of the rated power. If 0.2℃ / min ≤ dT / dt ≤ 0.5℃ / min, maintain the current power or make a slight reduction; If dT / dt < 0.2℃ / min, it indicates that the battery heat absorption is relatively gradual and can maintain a high power to ensure smooth switching.

[0055] It should be noted that at this stage, the PTC heater of the battery thermal management system has been activated and is powered by the power battery that has recovered its discharge capacity, working in conjunction with the combustion heater.

[0056] By dynamically adjusting the power of the combustion heater in the emergency heating system based on the temperature change and following the above logic, the heating power of the emergency heating system can be precisely controlled, avoiding temperature fluctuations and further improving the smoothness and stability of the switching process.

[0057] In the above implementation process, when the vehicle is in a low-power monitoring state, in response to the start signal, the emergency heating system is activated to heat the battery. When the real-time temperature of the battery reaches the discharge threshold, the battery thermal management system is activated to heat the battery, and the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery. After reaching the discharge threshold, instead of immediately shutting down the battery thermal management system to heat the battery, the power of the combustion heater is adjusted, effectively avoiding temperature overshoot due to inertia or temperature drop due to direct shutdown, achieving truly seamless switching. This achieves fully automatic control from triggering, operation to switching, greatly improving user experience and system reliability. The power selection logic optimizes the energy usage sequence, extends the independent working time and lifespan of the emergency heating system, and makes energy utilization more efficient.

[0058] In some embodiments, it also includes: First, acquire heating parameters in real time; Then, based on the heating parameters, it is determined whether the battery has a heating fault; Finally, if a heating fault is detected in the battery, a safety shutdown procedure is initiated, and a restart signal is regenerated after a preset interval.

[0059] In this embodiment, the VCU can monitor key parameters such as the status of the combustion heater, water pump operation, and coolant flow and temperature in real time, thus obtaining heating parameters. Based on these heating parameters, it can be determined whether the battery has experienced a heating fault. Once a non-serious fault such as ignition failure, unexpected engine shutdown, or abnormal flow is detected, the system will immediately issue an alarm and enter a safety shutdown procedure. After waiting for a short interval (e.g., 5 minutes), the system will automatically attempt to restart (the number of times is limited, e.g., 3 times), which greatly improves the first-time start-up success rate and overall robustness of the system in extremely cold and harsh environments. Multiple monitoring and protection mechanisms ensure the stable operation of the system in extremely cold environments and under potential faults, ensuring that the pure electric mining truck can be reliably woken up in extremely cold environments, providing users with an ultimate experience of getting on and going immediately, while also ensuring the safety and lifespan of the battery.

[0060] The following specific examples illustrate the solution of this embodiment: Please refer to Figure 2 and Figure 3 The user triggers a start signal via a remote terminal. Upon receiving the signal, the intelligent control module prioritizes checking the availability of an external charging station. If available, it powers the system; otherwise, it activates the ultra-low temperature start-up battery. Once powered, the control module starts the combustion heater to ignite the fuel and activates the circulating water pump. The coolant, heated at the heat exchanger, flows into the battery pack to heat the battery. The coolant circulates continuously, carrying heat into the battery pack. When the BMS detects that the battery temperature has risen to a set threshold and returned to its minimum discharge capacity, the control module activates the conventional PTC heater and gradually reduces or shuts down the combustion heater, seamlessly switching to the conventional thermal management mode. This breaks the startup deadlock under extreme cold conditions and enables a smooth and safe transition to a conventional system.

[0061] Figure 1 This is a flowchart illustrating the vehicle battery heating control method in this embodiment. It should be understood that, although... Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0062] This embodiment provides a vehicle battery heating control system, including an intelligent control module, an emergency heating system, and a battery thermal management system; Both the emergency heating system and the battery thermal management system are used to heat the vehicle's battery. The intelligent control module is used to activate the emergency heating system to heat the battery in response to a start signal when the vehicle is in a low-power monitoring state; and to activate the battery thermal management system to heat the battery when the real-time temperature of the battery reaches the discharge threshold, and to adjust the heating strategy of the emergency heating system according to the real-time temperature of the battery.

[0063] In this embodiment, please refer to Figure 4 The aforementioned intelligent control module can be a VCU or an independent controller, comprising: a wireless communication unit (4G / 5G) for receiving start signals from remote terminals (such as fleet management platforms) and uploading system status and fault information to a remote monitoring platform; a power supply logic switching unit responsible for executing the power selection strategy and making switching decisions between external power and dedicated batteries; and a control logic core that processes all input signals and issues control commands to various actuators (combustion heater, water pump, PTC) according to the control strategy described in this invention.

[0064] The aforementioned input signals can be remote start signals, accessed via a wireless communication unit for remote operation and maintenance; they can also be local start signals, accessed directly from a manual button in the cockpit, providing a field operation interface; or they can be battery status information, obtained in real time from the Battery Management System (BMS) via the CAN bus, which is crucial for achieving closed-loop control. This information includes the battery pack's minimum / maximum temperature, voltage, and SOC (used to determine whether discharge capacity has been restored), etc.

[0065] The real-time battery data provided by the BMS serves as the basis for all decisions made by the intelligent control module (such as whether to start, when to reduce power, and when to switch). After the battery temperature recovers, the intelligent control module smoothly transfers the heating control from the combustion heater to the conventional PTC heater through the control signal flow, achieving seamless integration of system functions.

[0066] First, the vicious cycle of "requiring electric heating - requiring thermal discharge" is fundamentally broken through the use of a fuel combustion heater (independent heat source) and an ultra-low temperature dedicated battery (independent power source). Second, the intelligent control module (VCU) acts as the brain, executing multi-source signal triggering and power supply priority management (prioritizing external power supply, with the dedicated battery as a backup), ensuring reliable startup under extreme cold conditions. Finally, through real-time communication with the battery management system (BMS), the temperature is accurately monitored, and a seamless and smooth switch to conventional PTC heating is achieved after the battery recovers its function. Multiple safety monitoring systems are embedded throughout the process to ensure the safe operation of thermal management, combustion, and electrical systems, ultimately enabling users to achieve the ultimate "get on and go" experience through remote control.

[0067] By establishing an independent power module consisting of an external charging interface and an ultra-low temperature starting battery, and clearly marking its power supply path with a solid red arrow, the emergency system's reliance on the frozen main power battery is fundamentally eliminated. A combustion heater is used as an independent heat source, its heat energy derived from fuel combustion rather than battery power, ensuring independence at the heat source level. The heat flow indicated by the solid blue arrow in the diagram visually demonstrates how this independent heat is transferred to the battery pack through the coolant.

[0068] This embodiment provides a vehicle in which the vehicle battery is heated using the above-described vehicle battery heating control method.

[0069] In the above implementation process, the vehicle battery heating control method is deeply integrated with the actual needs of electric vehicles under special working conditions such as extreme cold, heavy load, and long-term operation. Through a series of targeted software and hardware collaborative designs, it ultimately realizes the ultimate experience of "remote start and drive away" for users, while ensuring the safety and long life of the battery system.

[0070] Please refer to Figure 5 , Figure 5 This schematically illustrates a structural diagram of a vehicle battery heating control device according to an embodiment of the present application. This embodiment provides a vehicle battery heating control device, wherein the vehicle includes a battery, an emergency heating system, and a battery thermal management system, both of which are used to heat the battery; the device includes a start-up module 410 and an adjustment module 420, wherein: The start-up module 410 is used to start the emergency heating system to heat the battery in response to a start-up signal when the vehicle is in a low-power monitoring state. The adjustment module 420 is used to activate the battery thermal management system to heat the battery when the real-time temperature of the battery reaches the discharge threshold, and to adjust the heating strategy of the emergency heating system according to the real-time temperature of the battery.

[0071] The vehicle battery heating control device includes a processor and a memory. The aforementioned start-up module 410 and adjustment module 420 are stored in the memory as program units, and the processor executes the aforementioned program units stored in the memory to realize the corresponding functions.

[0072] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and vehicle battery heating control is achieved by adjusting kernel parameters.

[0073] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0074] This invention provides a machine-readable storage medium storing a program that, when executed by a processor, implements the motor pump control method.

[0075] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0076] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0077] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0078] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0079] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0080] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0081] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0082] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0083] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A vehicle battery heating control method characterized by, The vehicle comprises a battery, an emergency heating system and a battery thermal management system, both of which are used to heat the battery; the method comprises: In the low-power listening state of the vehicle, in response to the start signal, the emergency heating system is started to heat the battery; If the real-time temperature of the battery reaches the dischargeable threshold, the battery thermal management system is started to heat the battery, and the heating strategy of the emergency heating system is adjusted according to the real-time temperature of the battery.

2. The method of claim 1, wherein, The adjustment of the heating strategy of the emergency heating system according to the change of the real-time temperature of the battery comprises: Based on the real-time temperature of the battery and the working state of the battery thermal management system, it is judged whether the emergency heating system meets the preset switching condition; If it is determined that the emergency heating system meets the preset switching condition, the heating of the battery by the emergency heating system is stopped; If it is determined that the emergency heating system does not meet the preset switching condition, the temperature change amount is determined based on the real-time temperature of the battery, and the heating power of the emergency heating system is controlled based on the temperature change amount.

3. The method of claim 2, wherein, The control of the heating power of the emergency heating system based on the temperature change amount comprises: If the temperature change amount meets the first preset temperature condition, the heating power of the emergency heating system is controlled to decrease to a preset power value; If the temperature change amount meets the second preset temperature condition, the heating power of the emergency heating system is maintained; If the temperature change amount meets the third preset temperature condition, the heating power of the emergency heating system is increased.

4. The method of claim 1, wherein, After starting the emergency heating system to heat the battery, the method further comprises: Real-time acquisition of temperature data of multiple positions in the battery; Based on the temperature data of multiple positions in the battery, the maximum temperature difference is determined; Based on the maximum temperature difference, the heating operation of the battery thermal management system is adjusted.

5. The method of claim 4, wherein, The adjustment of the heating operation of the battery thermal management system comprises: Based on the maximum temperature difference, the circulating water pump speed in the battery thermal management system is adjusted by using a PID control algorithm.

6. The method of claim 1, wherein, The vehicle further comprises a storage battery and an external charging interface for connecting with an external power supply; Before starting the emergency heating system to heat the battery, the method further comprises: If it is determined that there is an external power supply, the external power supply is used to supply power to the emergency heating system; If it is determined that there is no external power supply, the storage battery is used to supply power to the emergency heating system.

7. The method of claim 1, wherein, Further comprising: Real-time acquisition of heating parameters; Based on the heating parameters, it is judged whether the battery has a heating failure; If it is determined that the battery has a heating failure, a safety shutdown program is entered, and after a preset interval, a start signal is re-generated.

8. A vehicle battery heating control system characterized by, It comprises an intelligent control module, an emergency heating system and a battery thermal management system; The emergency heating system and the battery thermal management system are both used to heat the battery of the vehicle; The intelligent control module is configured to, in response to a start signal, start the emergency heating system to heat the battery when the vehicle is in a low-power listening state; and start the battery thermal management system to heat the battery when a real-time temperature of the battery reaches a dischargeable threshold, and adjust a heating strategy of the emergency heating system according to the real-time temperature of the battery.

9. A vehicle battery heating control device characterized by comprising: The vehicle includes a battery, an emergency heating system and a battery thermal management system, and the emergency heating system and the battery thermal management system are both configured to heat the battery; and the device includes: A start module configured to, in response to a start signal, start the emergency heating system to heat the battery when the vehicle is in a low-power listening state; An adjustment module configured to, when a real-time temperature of the battery reaches a dischargeable threshold, start the battery thermal management system to heat the battery, and adjust a heating strategy of the emergency heating system according to the real-time temperature of the battery.

10. A vehicle characterized by comprising: The vehicle uses the vehicle battery heating control method in any one of claims 1-7 to heat the battery of the vehicle.

11. A machine-readable storage medium having instructions stored thereon, the instructions comprising: The instruction is configured to cause the machine to perform the method in any one of claims 1-7. The instruction is configured to cause the machine to perform the method in any one of claims 1-7.

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