Battery remote heating method, device and equipment for extended-range commercial vehicle and storage medium

Abstract

The invention discloses a remote battery heating method, device and equipment for an extended-range commercial vehicle and a storage medium, relates to the technical field of battery thermal management, and discloses the remote battery heating method for the extended-range commercial vehicle, which comprises the following steps: when a remote heating instruction is received, determining whether a battery is allowed to be recharged; when it is determined that the battery is allowed to be recharged, a target heating temperature and a heating mode of a heat management controller are determined, the battery is heated according to the heating mode, and the heating mode comprises a waste heat heating mode and a positive temperature coefficient heater heating mode; detecting whether the battery meets a heating stopping condition or not according to the target heating temperature; and when the battery meets the heating stopping condition, the vehicle is controlled to lower high voltage, so that remote heating of the battery of the extended-range commercial vehicle is completed. The technical effects that energy gradient utilization is achieved through engine waste heat, and the working performance of a battery of a commercial vehicle in a cold region is guaranteed are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery thermal management, in particular to a battery remote heating method and device for a range-extended commercial vehicle, an equipment and a storage medium. BACKGROUND

[0002] The new energy range-extended commercial vehicle mainly relies on the range-extended system to supplement the battery, so as to maintain the balance of the battery residual capacity during the vehicle driving process and ensure the normal operation of the vehicle. However, when such a vehicle operates in a cold region, due to the influence of the continuous low temperature environment, the temperature of the battery will drop sharply after the vehicle stops for a period of time, and once the temperature is lower than the normal working temperature range, the charging and discharging performance of the battery will be seriously reduced, and in serious cases, the vehicle will directly stop.

[0003] In view of the problem of battery low-temperature performance attenuation in cold regions, the traditional technical solution mainly supplies power to the positive temperature coefficient heater (PTC) by discharging the battery, and uses the heat generated by the PTC to heat the battery, so as to raise the temperature of the battery to the normal working range. However, for range-extended vehicles equipped with small-capacity batteries, due to the large working power of the PTC itself, the battery needs to provide energy for vehicle driving in addition to discharging to meet the heating needs of the PTC. This double energy consumption will accelerate the attenuation of the charging and discharging performance of the battery, and often the battery will run out of power before the PTC heats the battery to the preset temperature, thereby affecting the normal use of the driver.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide a battery remote heating method, device, equipment and storage medium for a range-extended commercial vehicle, which aims to solve the technical problems of battery charging and discharging performance attenuation and power loss when the range-extended commercial vehicle equipped with small-capacity batteries is remotely heated in cold regions.

[0006] To achieve the above purpose, the present application provides a battery remote heating method for a range-extended commercial vehicle, which comprises: When receiving a remote heating instruction, it is determined whether the battery is allowed to be recharged; When it is determined that the battery is allowed to be recharged, the target heating temperature and the heating mode of the thermal management controller are determined, and the battery is heated according to the heating mode, wherein the heating mode includes a residual heat heating mode and a positive temperature coefficient heater heating mode; According to the target heating temperature, it is detected whether the battery meets the stop heating condition; controlling the high voltage of the vehicle to complete the remote heating of the battery of the extended-range commercial vehicle when the battery meets the stop heating condition.

[0007] In an embodiment, the step of determining a target heating temperature and a heating mode of a thermal management controller when it is determined that the battery is allowed to be recharged, and heating the battery according to the heating mode comprises: obtaining a current temperature of the battery, a current ambient temperature, and a preset temperature matching rule when it is determined that the battery is allowed to be recharged; determining a target heating temperature according to the current temperature of the battery, the current ambient temperature, and the preset temperature matching rule; sending a heating mode judgment signal to the thermal management controller to make the thermal management controller determine and feed back a current engine water temperature according to the heating mode judgment signal, and determine a heating mode according to the current engine water temperature; heating the battery according to waste heat of an engine cooling system when the heating mode is a waste heat heating mode; heating the battery according to heat generated by a positive temperature coefficient heater when the heating mode is a positive temperature coefficient heater heating mode.

[0008] In an embodiment, the step of heating the battery according to waste heat of an engine cooling system when the heating mode is a waste heat heating mode comprises: obtaining a current flow path; controlling a double-way valve to switch the flow path from the current flow path to a waste heat flow path when the heating mode is a waste heat heating mode; controlling the coolant according to the waste heat flow path to make the waste heat of the engine cooling system pass through the waste heat flow path to the battery to heat the battery.

[0009] In an embodiment, the step of sending a heating mode judgment signal to the thermal management controller to make the thermal management controller determine and feed back a current engine water temperature according to the heating mode judgment signal, and determine a heating mode according to the current engine water temperature comprises: obtaining a preset water temperature threshold; sending a heating mode judgment signal to the thermal management controller to make the thermal management controller determine and feed back the current engine water temperature according to the heating mode judgment signal; determining that the heating mode is a waste heat heating mode when the current engine water temperature is greater than the preset water temperature threshold; determining that the heating mode is a positive temperature coefficient heater heating mode when the current engine water temperature is less than or equal to the preset water temperature threshold.

[0010] In an embodiment, before the step of heating the battery according to waste heat of an engine cooling system when the heating mode is a waste heat heating mode, the method further comprises: obtaining a preset running power; controlling engine running according to the preset running power, and performing the step of heating according to waste heat of an engine cooling system.

[0011] In an embodiment, the step of detecting whether the battery meets a stop heating condition according to the target heating temperature comprises: obtaining a current battery temperature, a cumulative heating time, and a preset heating time; when the current battery temperature is the target heating temperature, or the cumulative heating time is the preset heating time, determining that the battery meets the stop heating condition; when the current battery temperature is less than the target heating temperature, and the cumulative heating time is less than the preset heating time, determining that the battery does not meet the stop heating condition.

[0012] In an embodiment, the step of controlling vehicle high voltage to complete battery remote heating of the extended-range commercial vehicle when the battery meets the stop heating condition comprises: obtaining a preset voltage safety requirement; when the battery meets the stop heating condition, sending a high voltage disconnection instruction to a high voltage distribution unit, so that the high voltage distribution unit sequentially disconnects a main contactor, a pre-charge contactor, and a high voltage contactor in a vehicle high voltage system according to the high voltage disconnection instruction and feeds back a voltage state; when the voltage state meets the preset voltage safety requirement, completing vehicle high voltage to complete battery remote heating of the extended-range commercial vehicle.

[0013] In addition, to achieve the above-mentioned purpose, the application further provides a battery remote heating device of an extended-range commercial vehicle, which comprises: an instruction receiving module, configured to determine whether a battery is allowed to be recharged when a remote heating instruction is received; a battery heating module, configured to determine a target heating temperature and a heating mode of a thermal management controller when it is determined that the battery is allowed to be recharged, and heat the battery according to the heating mode, wherein the heating mode comprises a waste heat heating mode and a positive temperature coefficient heater heating mode; a stop determining module, configured to detect whether the battery meets a stop heating condition according to the target heating temperature; a heating stop module, configured to control vehicle high voltage to complete battery remote heating of the extended-range commercial vehicle when the battery meets the stop heating condition.

[0014] In addition, to achieve the above object, the application further provides a battery remote heating device for a range-extended commercial vehicle, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the battery remote heating method for the range-extended commercial vehicle.

[0015] In addition, to achieve the above object, the application further provides a storage medium, which is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the battery remote heating method for the range-extended commercial vehicle.

[0016] In addition, to achieve the above object, the application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the battery remote heating method for the range-extended commercial vehicle.

[0017] The one or more technical solutions provided by the application have at least the following technical effects: Since it is determined whether the battery allows back charging when the remote heating instruction is received, the target heating temperature is determined after it is determined that the battery allows back charging, the heating mode of the heat management controller includes the waste heat heating mode and the positive temperature coefficient heater heating mode, and the battery is heated according to the heating mode, then it is detected whether the battery meets the stop heating condition, and the high voltage of the vehicle is controlled to be lowered to complete the battery remote heating when the battery meets the stop heating condition; in the prior art, the range-extended commercial vehicle equipped with a small power battery mainly relies on the discharge of the power battery to heat the positive temperature coefficient heater when the vehicle is remotely heated by reservation in a cold area, the working power of the positive temperature coefficient heater is large, and the power battery needs to simultaneously bear the vehicle driving power supply and the heating power supply, which easily leads to accelerated attenuation of the charging and discharging performance of the battery, and the power cannot meet the heating demand and the battery is often depleted, thereby affecting the normal use of the driver, and the prior art can avoid additional loss caused by starting the related heating power supply operation when the battery is not suitable for back charging, and the waste heat heating mode is provided to replace the traditional pure positive temperature coefficient heater heating mode, which can reduce the discharge consumption of the power battery caused by heating, so compared with the prior art, the prior art can avoid the problems of the decline of the charging and discharging performance and the depletion of the small power battery caused by the discharge heating, ensure that the battery of the range-extended commercial vehicle can be in a normal working state after remote heating in a cold area, ensure that the vehicle can be normally used, and at the same time, the engine waste heat is used to realize the effective use of energy, and further improve the use reliability of the vehicle in a cold environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the field, other drawings can also be obtained based on these drawings without any creative effort.

[0020] Figure 1 The flowchart provided by the battery remote heating method for the range-extended commercial vehicle in Embodiment One of the present application; Figure 2 The flowchart provided by the battery remote heating method for the range-extended commercial vehicle in Embodiment Two of the present application; Figure 3 The brief flowchart of the battery remote heating method for the range-extended commercial vehicle provided by Embodiment Two of the present application; Figure 4 The module structure diagram of the battery remote heating device for the range-extended commercial vehicle in the embodiment of the present application; Figure 5 The device structure diagram of the hardware running environment involved in the battery remote heating method for the range-extended commercial vehicle in the embodiment of the present application.

[0021] The purpose realization, functional features and advantages of the present application will be further described with reference to the accompanying drawings in combination with the embodiments. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application, and are not used to limit the present application.

[0023] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the drawings in the specification and specific embodiments.

[0024] The main solution of the embodiment of the present application is: when receiving a remote heating instruction, it is determined whether the battery allows back charging; when it is determined that the battery allows back charging, the target heating temperature and the heating mode of the thermal management controller are determined, and the battery is heated according to the heating mode, wherein the heating mode includes waste heat heating mode and positive temperature coefficient heater heating mode; according to the target heating temperature, it is detected whether the battery meets the stop heating condition; when the battery meets the stop heating condition, the high pressure of the vehicle is controlled to complete the battery remote heating of the range-extended commercial vehicle.

[0025] In the present embodiment, for the convenience of description, the following describes the identification of the battery remote heating device for the range-extended commercial vehicle as the execution subject.

[0026] The existing technology is equipped with a small power battery of the range extended commercial vehicle, and when the battery is heated remotely in a cold area, the battery charging and discharging performance is prone to attenuation and power shortage. A solution is provided. When the remote heating instruction is received, it is determined whether the battery is allowed to be recharged. After it is determined that the battery is allowed to be recharged, the target heating temperature is determined, and the heating mode of the heat management controller includes the waste heat heating mode and the positive temperature coefficient heater heating mode, and the battery is heated according to the heating mode. Then, it is detected whether the battery meets the stop heating condition. When the battery meets the stop heating condition, the high voltage of the vehicle is controlled to complete the remote heating of the battery. In the prior art, the range extended commercial vehicle equipped with a small power battery is mainly dependent on the discharging of the power battery to heat the positive temperature coefficient heater in a cold area. The working power of the positive temperature coefficient heater is large, and the power battery needs to simultaneously bear the vehicle driving power supply and the heating power supply, which is prone to accelerate the attenuation of the battery charging and discharging performance, and the power cannot meet the heating demand, resulting in power shortage. This further affects the normal use of the driver. The prior art can avoid the additional loss caused by starting the related heating power supply operation when the battery is not suitable for recharging. At the same time, the waste heat heating mode is provided to replace the traditional pure positive temperature coefficient heater heating mode, which can reduce the discharging consumption of the power battery caused by heating. Therefore, compared with the prior art, the prior art can avoid the problems of the attenuation of the charging and discharging performance and power shortage of the small power battery caused by discharging heating, ensure that the battery of the range extended commercial vehicle can be in a normal working state after remote heating in a cold area, and ensure that the vehicle can be normally used. At the same time, the engine waste heat is used to realize the effective use of energy, and the use reliability of the vehicle in a cold environment is further improved.

[0027] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a battery remote heating device of a range extended commercial vehicle, a vehicle controller, etc. The vehicle controller is taken as an example to describe the embodiment and the following embodiments.

[0028] Based on this, the embodiment of the application provides a battery remote heating method of a range extended commercial vehicle, which is described with reference to Figure 1 , Figure 1 The flowchart of the first embodiment of the battery remote heating method of the range extended commercial vehicle of the application is shown in the figure.

[0029] In the embodiment, the battery remote heating method of the range extended commercial vehicle includes steps S10-S40: Step S10, when the remote heating instruction is received, it is determined whether the battery is allowed to be recharged; It should be noted that the remote heating instruction is an instruction issued by the user through the application program of the mobile terminal, which is used to trigger the range-extender commercial vehicle to heat the battery in advance. The instruction is transmitted to the control module at the vehicle end through the vehicle's telematics box (TBOX), and is the initial signal to start the battery remote heating process.

[0030] It should be understood that the battery refers to the power battery on the range-extender commercial vehicle for providing energy for vehicle driving and related electrical equipment, and its performance is greatly affected by temperature. In cold environments, it needs to be heated to maintain normal working state, and is the object of the remote heating process.

[0031] Further, allowing recharging means that through detection of the current state of the battery, it is determined that the battery has the condition to receive external power supplement, i.e. the current remaining capacity, voltage, health status and other parameters of the battery meet the preset chargeable standard, and the battery can accept energy supplement during the heating process to avoid power loss.

[0032] It can be understood that the TBOX receives the remote heating instruction issued by the user from the APP, and verifies the legality of the instruction. After confirming that the source and content of the instruction are correct, the instruction is transmitted to the vehicle control unit (VCU). Then, the vehicle control unit sends a battery state query request to the battery management system (BMS). Then, the battery management system detects the current remaining capacity, current voltage and current health status of the battery, and feeds back these data to the vehicle control unit. Finally, the vehicle control unit compares the feedback battery state data with the preset recharging determination standard. If the remaining capacity is lower than the preset threshold, the voltage is within the preset chargeable range, and the health status meets the standard, it is determined that the battery allows recharging, otherwise it is determined that the battery does not allow recharging.

[0033] Step S20, when it is determined that the battery allows recharging, determining a target heating temperature and a heating mode of the thermal management controller, and heating the battery according to the heating mode, wherein the heating mode includes a waste heat heating mode and a positive temperature coefficient heater heating mode. It should be noted that the target heating temperature is determined according to the normal working temperature range of the battery and the current environment temperature, and is intended to let the battery reach an ideal temperature value after heating. This temperature value can ensure that the battery has good charge and discharge performance, and avoid performance degradation due to too low temperature. It is the target benchmark of the heating process.

[0034] It should be understood that the thermal management controller (TMS) is a control module for monitoring and controlling the operation of vehicle thermal management related components, can receive signals of other control modules, adjust heating heat source and heating mode according to preset logic, and is a core component for realizing heating mode switching and temperature control.

[0035] Further, the heating mode refers to the energy source and heating mode adopted when the battery is heated, which is divided into two modes, waste heat heating mode and positive temperature coefficient heater heating mode in the embodiment, different modes correspond to different heat sources, and the energy utilization can be optimized according to the actual working condition.

[0036] In addition, the waste heat heating mode refers to a mode in which the waste heat generated by the cooling system of the extended-range commercial vehicle after starting is used as a heat source to heat the battery. This mode does not consume battery power, can realize energy cascade utilization, and avoids battery power loss due to heating discharge.

[0037] In addition, the positive temperature coefficient heater heating mode, i.e. the positive temperature coefficient heater (PTC) heating mode, refers to a mode in which the heat generated by the positive temperature coefficient heater after being powered on is used to heat the battery. This mode consumes battery power to drive the PTC to work, and is prone to battery power loss when the battery power is low.

[0038] It can be understood that after the vehicle controller determines that the battery is allowed to be recharged, the current battery temperature fed back by the battery management system is received, and the real-time ambient temperature collected by the ambient temperature sensor is obtained; then, the target heating temperature is determined according to the current battery temperature and the real-time ambient temperature in combination with the normal working temperature range of the battery, for example, the lower the ambient temperature, the higher the target heating temperature is set; then, the vehicle controller sends a start instruction to the range extender to control the range extender to drive the engine to run, and sends a heating mode judgment signal to the thermal management controller; after receiving the signal, the thermal management controller monitors the real-time water temperature of the engine, and if the water temperature is higher than a preset threshold, the heating mode is determined as the waste heat heating mode, and if the water temperature is lower than or equal to the preset threshold, the heating mode is determined as the positive temperature coefficient heater heating mode; finally, the thermal management controller controls the corresponding components to work according to the determined heating mode, and if the heating mode is the waste heat heating mode, the valve is switched to the waste heat circulation path, and if the heating mode is the positive temperature coefficient heater heating mode, the PTC is started to heat the battery by using the corresponding heat source.

[0039] In a possible implementation, step S20 can include steps S21-S25: Step S21, when it is determined that the battery is allowed to be recharged, the current battery temperature, the current ambient temperature and the preset temperature matching rule are obtained. It should be noted that the current battery temperature refers to the real-time temperature of the power battery detected by the BMS temperature sensor before starting the heating process, which directly reflects the current thermal state of the battery and is the key basis for determining whether heating is needed and the target heating. If the temperature is too low, it will cause the battery charge and discharge performance to decline.

[0040] In addition, the current environment temperature refers to the real-time temperature of the external environment of the extended-range commercial vehicle, which is collected by the environmental temperature sensor mounted on the vehicle. The temperature will affect the change speed of the battery temperature and the heating demand. The lower the environmental temperature, the faster the battery temperature drops, and the higher the required heating intensity.

[0041] In addition, the preset temperature matching rule is formulated by the technical personnel according to the best working temperature interval of the battery and the heat loss law of the battery under different environmental temperatures, which is used to associate the current battery temperature, the current environmental temperature and the target heating temperature.

[0042] Step S22, determining the target heating temperature according to the current battery temperature, the current environment temperature and the preset temperature matching rule; It can be understood that the vehicle controller compares the current battery temperature and the current environment temperature with the temperature intervals in the preset temperature matching rule one by one to determine the rule item to which the current temperature combination belongs. According to the matched rule item, the target heating temperature value corresponding to the item is extracted. The vehicle controller determines the extracted value as the target heating temperature of this heating process, and synchronizes the temperature data to the battery management system and the thermal management controller, so as to monitor the heating progress and control the heating intensity.

[0043] Step S23, sending a heating mode judgment signal to the thermal management controller to make the thermal management controller determine and feedback the current engine water temperature according to the heating mode judgment signal, and determine the heating mode according to the current engine water temperature; It should be noted that the heating mode judgment signal is sent by the vehicle controller to the thermal management controller, which is an instruction signal for triggering the thermal management controller to determine the heating mode. The signal contains the basic working condition information of the vehicle, such as the state information of whether the engine has started, which provides the trigger and basis for the thermal management controller to determine the heating mode.

[0044] It can be understood that the vehicle controller generates a heating mode judgment signal containing engine start state information after determining the target heating temperature; the vehicle controller sends the heating mode judgment signal to the thermal management controller through the communication bus inside the vehicle; the thermal management controller receives the signal and sends a water temperature collection request to the engine water temperature sensor to obtain the current real-time water temperature of the engine; the thermal management controller compares the real-time water temperature of the engine with the preset water temperature threshold value, and determines the heating mode as waste heat heating mode if the water temperature is higher than the threshold value, or as positive temperature coefficient heater heating mode if the water temperature is lower than or equal to the threshold value; the thermal management controller feeds back the determined heating mode to the vehicle controller through the communication bus, completing the determination and feedback of the heating mode.

[0045] In a possible implementation, step S23 can include steps S231-S234: Step S231, obtaining a preset water temperature threshold value; It should be noted that the preset water temperature threshold value is a temperature value determined by the technical personnel according to the engine waste heat utilization efficiency, the battery heating demand and the performance of the thermal management system, which is used to judge whether the waste heat of the engine cooling system is sufficient to meet the battery heating demand.

[0046] Step S232, sending a heating mode judgment signal to the thermal management controller, so that the thermal management controller determines and feeds back the current water temperature of the engine according to the heating mode judgment signal; It should be noted that the current water temperature of the engine refers to the real-time temperature of the cooling liquid in the cooling system of the engine during the operation of the engine, which is collected by the engine water temperature sensor and directly reflects whether the engine generates sufficient waste heat.

[0047] It can be understood that the vehicle controller generates a heating mode judgment signal containing engine start state information; the vehicle controller sends the heating mode judgment signal to the thermal management controller through the CAN communication bus inside the vehicle; the thermal management controller receives the signal and identifies that the current water temperature of the engine needs to be collected, and then sends a water temperature collection request to the engine water temperature sensor; the engine water temperature sensor detects the real-time temperature of the cooling liquid in the cooling system of the engine in response to the request, and feeds back the temperature as the current water temperature of the engine to the thermal management controller; the thermal management controller feeds back the received current water temperature of the engine to the vehicle controller through the CAN communication bus.

[0048] Step S233, determining the heating mode as waste heat heating mode when the current water temperature of the engine is greater than the preset water temperature threshold value; It can be understood that the vehicle controller obtains the current engine water temperature fed back by the thermal management controller according to the preset water temperature threshold value; the vehicle controller compares the current engine water temperature with the preset water temperature threshold value; if the comparison result is that the current engine water temperature is greater than the preset water temperature threshold value, the vehicle controller determines that the waste heat of the engine cooling system is sufficient to meet the battery heating demand, and then determines that the heating mode of the current heating process is the waste heat heating mode, and temporarily stores the mode determination result to prepare for subsequent start of the waste heat heating operation.

[0049] Step S234, when the current engine water temperature is less than or equal to the preset water temperature threshold value, the heating mode is determined as the positive temperature coefficient heater heating mode.

[0050] It can be understood that the vehicle controller compares the preset water temperature threshold value with the current engine water temperature; if the comparison result is that the current engine water temperature is less than or equal to the preset water temperature threshold value, the vehicle controller determines that the waste heat of the engine cooling system is insufficient to meet the battery heating demand, in order to avoid interruption of the heating process, and then determines the heating mode of the current heating process as the positive temperature coefficient heater heating mode, and temporarily stores the determination result to prepare for subsequent start of the positive temperature coefficient heater.

[0051] Step S24, when the heating mode is the waste heat heating mode, the battery is heated according to the waste heat of the engine cooling system; It should be understood that the engine cooling system is a system for maintaining the engine operating temperature in a reasonable range, mainly composed of coolant, water pump, radiator, water pipe and other components. The heat generated by the engine during operation is absorbed by the coolant, which circulates in the system. In the traditional design, the heat in the coolant is dissipated to the air through the radiator, while in the waste heat heating mode, the heat is used to heat the battery.

[0052] It can be understood that after the vehicle controller receives the waste heat heating mode fed back by the thermal management controller, the vehicle controller sends an instruction to start the waste heat heating to the thermal management controller; the thermal management controller responds to the instruction and sends a switching control signal to the double-way valve to control the double-way valve to change the flow path of the coolant, so that the coolant carrying the waste heat in the engine cooling system is switched from the original path flowing to the radiator to the path flowing to the battery heating loop; the coolant enters the battery heating loop under the action of the water pump and exchanges heat with the battery, so as to transfer the waste heat carried by itself to the battery and gradually increase the temperature of the battery; the thermal management controller receives the battery temperature data fed back by the battery management system in real time, adjusts the opening of the double-way valve according to the temperature change, controls the flow of the coolant, and ensures that the temperature of the battery rises smoothly to the target heating temperature.

[0053] In an implementable embodiment, before step S24, the method can further comprise: obtaining a preset operating power; and controlling the engine to operate according to the preset operating power and performing the step of heating according to the waste heat of the engine cooling system.

[0054] It should be noted that the preset operating power is an engine operating power value preset according to the current remaining power of the battery, the heating demand and the engine energy consumption characteristics, which can ensure that the engine generates sufficient waste heat to meet the battery heating demand, avoid energy waste caused by excessively high engine power, and provide moderate power compensation for the battery during the heating process. In the present embodiment, the power can be a relatively small power.

[0055] It should be understood that the control of the engine operation refers to the operation of the vehicle controller sending a power control instruction to the engine controller according to the preset operating power, adjusting the speed and torque of the engine, and making the engine work stably at the set power, so as to continuously generate heat to meet the waste heat heating demand and compensate the battery.

[0056] It can be understood that the vehicle controller sends a query request for the current remaining power of the battery to the battery management system, obtains the current remaining power data of the battery, and calls the preset power matching table, which records the preset operating power corresponding to different remaining power of the battery; the vehicle controller looks up the corresponding preset operating power in the power matching table according to the obtained current remaining power of the battery, and temporarily stores the power value; the vehicle controller sends a control instruction containing the preset operating power to the engine controller, and the engine controller adjusts the speed and torque of the engine after receiving the instruction, so that the engine works stably at the preset operating power, ensuring that the engine continuously generates sufficient waste heat, and the battery is compensated by the generator.

[0057] In an implementable embodiment, step S24 can comprise: obtaining a current flow path; when the heating mode is the waste heat heating mode, controlling the double-way valve to switch the flow path from the current flow path to the waste heat flow path; and controlling the coolant according to the waste heat flow path, so that the waste heat of the engine cooling system is transmitted to the battery through the waste heat flow path to heat the battery.

[0058] It should be noted that the current flow path refers to the default flow path of the coolant in the engine cooling system before the waste heat heating mode is started, which is usually the path of the coolant flowing out of the engine, being cooled by the radiator and then flowing back to the engine. This path is only used for temperature control of the engine itself and does not involve battery heating.

[0059] It should be understood that the double-pass valve is a valve component for changing the flow direction of the coolant in the engine cooling system, which can realize the switching of the coolant between different flow paths by receiving the control signal to switch the valve opening and the conduction direction, and is a key control component connecting the engine cooling system and the battery heating circuit.

[0060] In addition, the waste heat flow path is a coolant flow path specially designed for transferring the engine cooling system waste heat to the battery, one end of which is connected to the engine cooling system, and the other end is connected to the battery heating circuit. The coolant can directly transport the engine waste heat to the battery through this path to provide a heat source for battery heating.

[0061] In addition, it should be understood that coolant control refers to adjusting the flow and speed of the coolant flowing in the waste heat flow path by adjusting the opening of the double-pass valve, controlling the speed of the water pump, etc., to control the amount of heat transferred to the battery and ensure smooth temperature rise of the battery.

[0062] It can be understood that the vehicle controller sends a flow path query request to the thermal management controller, the thermal management controller responds to the request, obtains the current conduction state of the double-pass valve, and then determines the current flow path of the coolant in the engine cooling system, and feeds back the path information to the vehicle controller. After confirming that the heating mode is the waste heat heating mode, the vehicle controller sends a path switching instruction to the thermal management controller, the thermal management controller receives the instruction and sends a switching control signal to the double-pass valve to control the double-pass valve to change the conduction direction and switch the flow path of the coolant from the current flow path to the waste heat flow path. The thermal management controller sends a speed control signal to the water pump according to the requirements of the waste heat flow path to adjust the speed of the water pump to control the flow and speed of the coolant in the waste heat flow path, while receiving the battery temperature data fed back by the battery management system in real time, and adjusting the opening of the double-pass valve according to the temperature change to ensure that the engine waste heat carried by the coolant can be stably transferred to the battery through the waste heat flow path, realizing battery heating.

[0063] Step S25, when the heating mode is the positive temperature coefficient heater heating mode, heating the battery according to the heat generated by the positive temperature coefficient heater.

[0064] It can be understood that first, after the vehicle controller receives the positive temperature coefficient heater heating mode feedback from the thermal management controller, the vehicle controller sends an instruction to start the positive temperature coefficient heater to the thermal management controller, and synchronously sends a signal to allow discharge to the battery management system; the thermal management controller responds to the instruction and sends a power-on control signal to the positive temperature coefficient heater to control the positive temperature coefficient heater to turn on the high-voltage power supply and start power-on heat generation; the heat generated by the positive temperature coefficient heater is transmitted to the battery through the heat exchange device, so that the temperature of the battery gradually rises; the battery management system monitors the remaining power and temperature of the battery in real time and feeds back the data to the vehicle controller; the vehicle controller adjusts the heating power of the positive temperature coefficient heater through the thermal management controller according to the battery temperature data, so as to ensure that the battery temperature smoothly rises to the target heating temperature, and to avoid that the remaining power of the battery is too low.

[0065] Step S30, detecting whether the battery meets the stop heating condition according to the target heating temperature; It should be noted that the stop heating condition refers to a preset standard for determining whether the battery heating process needs to be terminated, which is based on the battery temperature and the heating time. When any of the conditions is met, the heating of the battery can be stopped to avoid excessive heating damage to the battery or waste of energy.

[0066] It can be understood that the BMS continuously monitors the real-time temperature of the battery and feeds back the real-time temperature data to the vehicle controller and the thermal management controller in real time; at the same time, the TBOX starts timing the heating duration from the start of the remote heating instruction, and also feeds back the timing data to the vehicle controller; the vehicle controller compares the real-time temperature of the battery with the target heating temperature, and compares the heating duration with the preset maximum heating time; finally, if the real-time temperature reaches the target heating temperature, or the heating duration reaches the preset maximum heating time, it is determined that the battery meets the stop heating condition, otherwise it is determined that it does not meet the condition and continues to heat.

[0067] In a feasible implementation, step S30 can include steps S31-S33: Step S31, obtaining the current temperature of the battery, the cumulative heating time, and the preset heating time; It should be noted that the current temperature of the battery refers to the real-time temperature data of the power battery collected by the battery management system in the battery heating process, which directly reflects the current thermal state of the battery and is the core basis for determining whether the battery reaches the heating target. If the temperature reaches the target value, the heating can be stopped to avoid excessive heating damage to the battery.

[0068] In addition, the heating cumulative time refers to the total time from starting the battery heating process to the current time, which is continuously timed and recorded by the vehicle telematics processor. This time can reflect the duration of the heating operation and prevent energy waste or battery abnormalities caused by excessive heating time.

[0069] In addition, the preset heating time is the longest heating time set by technicians according to the heating efficiency of the battery under different environmental temperatures, battery capacity, and safety heating requirements. It is a protection threshold to prevent the heating process from being carried out indefinitely. Even if the battery does not reach the target temperature, the heating must be stopped if the heating time reaches this value.

[0070] In addition, the target heating temperature is the ideal heating end temperature of the battery determined according to the current battery temperature, the current environmental temperature, and the preset temperature matching rule. This temperature is within the optimal working temperature range of the battery and is a key temperature reference for determining whether the heating is complete.

[0071] Step S32: When the current battery temperature is the target heating temperature or the heating cumulative time is the preset heating time, it is determined that the battery meets the stop heating condition.

[0072] It can be understood that the vehicle controller compares the obtained current battery temperature with the target heating temperature, determines whether the current battery temperature reaches the target heating temperature, and then compares the heating cumulative time with the preset heating time, determines whether the heating cumulative time reaches the preset heating time, and finally makes a logical decision based on the comparison results. If the current battery temperature is equal to the target heating temperature or the heating cumulative time is equal to the preset heating time, either condition is met, and the vehicle controller determines that the battery meets the stop heating condition. If neither condition is met, it is determined that the battery does not meet the stop heating condition and continues to maintain the heating state.

[0073] Step S33: When the current battery temperature is less than the target heating temperature and the heating cumulative time is less than the preset heating time, it is determined that the battery does not meet the stop heating condition.

[0074] It can be understood that the current battery temperature is compared with the target heating temperature to determine whether the current battery temperature is less than the target heating temperature, and the heating cumulative time is compared with the preset heating time to determine whether the heating cumulative time is less than the preset heating time. Based on the comparison results of the two groups, if the current battery temperature is less than the target heating temperature and the heating cumulative time is less than the preset heating time, both conditions are met, and the vehicle controller determines that the battery does not meet the stop heating condition and sends a continuous heating instruction to the thermal management controller to maintain the current heating mode and heating intensity and continue to heat the battery.

[0075] Step S40, when the battery meets the stop heating condition, control the high voltage of the vehicle to be low, so as to complete the battery remote heating of the extended-range commercial vehicle.

[0076] It should be understood that the control of the high voltage of the vehicle refers to that, after the battery heating process is completed, the vehicle controller controls the high voltage contactors in the high voltage system of the vehicle to be sequentially disconnected according to the preset safety logic, so that the high voltage system is switched from the live state to the off state, which can ensure the safety of the high voltage system of the vehicle after the heating is completed and reduce the static power consumption.

[0077] It can be understood that, after the vehicle controller determines that the battery meets the stop heating condition, the vehicle controller sends a stop heating instruction to the TMS; after the thermal management controller receives the instruction, the thermal management controller performs a stop operation according to the current heating mode, if the heating mode is the residual heat heating mode, the double-way valve is controlled to reset to the initial flow path and the engine is stopped, if the heating mode is the positive temperature coefficient heater heating mode, the positive temperature coefficient heater is turned off; the vehicle controller sends a high voltage disconnection instruction to the high voltage power distribution unit of the vehicle, and controls the high voltage power distribution unit to sequentially disconnect the main contactor, the pre-charge contactor and the branch high voltage contactors in the high voltage system; the vehicle controller detects the voltage state of the high voltage system and confirms that the voltage is reduced to a safe range; after confirming that the high voltage system is safely powered off, the vehicle controller sends a hibernation instruction to each electronic control module of the vehicle, and each module enters a low-power hibernation state, thus the battery remote heating process of the extended-range commercial vehicle is completed.

[0078] The embodiment provides a battery remote heating method of an extended-range commercial vehicle, which solves the technical problem that the performance of the power battery of the extended-range commercial vehicle is affected by temperature in a cold environment, so that the charging and discharging performance is reduced, and achieves the beneficial effects that the battery is effectively heated by using the engine residual heat or the positive temperature coefficient heater without consuming the battery power, the normal working state of the battery is maintained, the power loss is avoided, and the thermal efficiency and the cruising range of the vehicle are improved.

[0079] Based on the first embodiment of the application, in the second embodiment of the application, the same or similar contents as the above-mentioned first embodiment can be referred to the above description, and will not be described hereinafter. On this basis, please refer to Figure 2 , the step S40 of the battery remote heating method of the extended-range commercial vehicle includes steps S41-S43: Step S41, obtaining a preset voltage safety requirement; It should be noted that the preset voltage safety requirement is a voltage threshold range set by the technician according to the high-voltage system safety standard, the voltage limit of the electrical component, and the safety protection requirement of the personnel. The range is used to determine whether the voltage of the vehicle high-voltage system after power-off is in a safe state. Generally, it is set as a low-voltage safety range. When the high-voltage system voltage drops to the range, it is considered to meet the safety condition of the lower high-voltage, avoiding the risk of electric shock or component damage caused by residual high-voltage.

[0080] In step S42, when the battery meets the stop heating condition, a high-voltage disconnect instruction is sent to the high-voltage distribution unit to disconnect the main contactor, the pre-charge contactor, and the high-voltage contactor in the vehicle high-voltage system in sequence according to the high-voltage disconnect instruction, and the voltage state is fed back. It should be noted that the high-voltage disconnect instruction is an instruction signal generated by the vehicle controller and sent to the high-voltage distribution unit. The signal contains the disconnect sequence and disconnect timing requirements, which are used to inform the high-voltage distribution unit to cut off the power supply circuit of the high-voltage system according to the preset safety logic. It is the core signal that triggers the disconnection operation of the high-voltage system contactor.

[0081] It should be understood that the high-voltage distribution unit is the core control component of the vehicle high-voltage system, responsible for receiving the instructions of the vehicle controller, controlling the on-off of the high-voltage contactor, distributing high-voltage power, and monitoring the voltage and current state of the high-voltage system. It is the key unit for executing the high-voltage system power-off operation and feeding back the voltage state.

[0082] In addition, the main contactor is a key switch component in the high-voltage system that controls the on-off of the main power supply circuit. It is connected in series between the high-voltage power supply and the high-voltage load. When the main contactor is closed, high-voltage power can be delivered to subsequent high-voltage components. Its disconnection is the first step to cut off the high-voltage main circuit.

[0083] In addition, the pre-charge contactor is a switch component in the high-voltage system used for pre-charge function. It is used in cooperation with the pre-charge resistor. It is closed before the main contactor is closed to slowly charge the high-voltage capacitor through the pre-charge resistor, avoiding the damage of components caused by large current impact when the main contactor is closed. Its disconnection is an important link in the high-voltage system power-off.

[0084] In addition, the high-voltage contactor is a generic term for switch components in the high-voltage system other than the main contactor and the pre-charge contactor, which control the branch high-voltage circuits (such as motor controllers and charger circuits). Its disconnection can cut off the high-voltage power supply of each branch circuit to ensure that the high-voltage system is fully powered off.

[0085] Further, the voltage state refers to the residual voltage data of the high-voltage system detected by the voltage sensor of the high-voltage distribution unit after the disconnection of various types of contactors. This data can directly reflect whether the high-voltage system has dropped to a safe range, and is the direct basis for the vehicle controller to determine whether the lower high-voltage operation is safe.

[0086] It can be understood that the vehicle controller generates a high-voltage disconnect instruction containing a contactor disconnect sequence and timing requirements after confirming that the battery meets the stop heating condition; the vehicle controller sends the high-voltage disconnect instruction to the high-voltage distribution unit through the high-voltage communication bus; after receiving the instruction, the high-voltage distribution unit controls the pre-charge contactor to disconnect according to the disconnect sequence and timing in the instruction, cutting off the pre-charge circuit; then controls the main contactor to disconnect, cutting off the high-voltage main circuit; finally controls each branch high-voltage contactor to disconnect, cutting off all branch high-voltage circuits; after disconnecting all contactors, the high-voltage distribution unit detects the residual voltage of the high-voltage system through the voltage sensor carried by itself, takes the voltage data as the voltage state, and feeds back to the vehicle controller through the high-voltage communication bus.

[0087] Step S43, when the voltage state meets the preset voltage safety requirement, the high voltage of the vehicle is completed to complete the battery remote heating of the extended-range commercial vehicle.

[0088] It can be understood that the vehicle controller receives the voltage state feedback from the high-voltage distribution unit according to the preset voltage safety requirement; the vehicle controller compares the voltage state with the preset voltage safety requirement to determine whether the voltage state is within the preset safe voltage range; if the voltage state meets the preset voltage safety requirement, the vehicle controller determines that the high-voltage system has been safely disconnected, sends a high-voltage completion signal to each electronic control module of the vehicle, such as the battery management system and the thermal management controller, and formally completes the high-voltage operation of the vehicle; with the completion of the high-voltage operation of the vehicle, the entire battery heating process triggered by the remote heating instruction is completed, and the battery remote heating task of the extended-range commercial vehicle is formally completed.

[0089] The embodiment provides a battery remote heating method of an extended-range commercial vehicle, which solves the technical problem of how to safely disconnect the high-voltage system in the remote heating process of the extended-range commercial vehicle to avoid electric shock or component damage through technical means such as obtaining a preset voltage safety requirement, sending a high-voltage disconnect instruction, and confirming a voltage state, achieves the beneficial effects of being able to sequentially disconnect each contactor in the high-voltage system according to a preset safety logic after the battery meets the stop heating condition, and ensuring that the voltage of the high-voltage system drops to a safe range, thereby safely completing the high-voltage operation of the vehicle and protecting the safety of personnel and the safety of vehicle electrical components.

[0090] Exemplarily, in order to help understand the implementation process of the battery remote heating method of the extended-range commercial vehicle obtained after the above embodiment one, please refer to Figure 3 , Figure 3 A brief flowchart of a battery remote heating method of an extended-range commercial vehicle is provided, specifically: The TBOX module starts timing, detects whether the start heating time meets the preset, if not, continues heating, if yes, controls the temperature to 0. The BMS module detects the battery temperature and high voltage state, sends a set mode heating request, if the temperature reaches the preset, stops heating and sends a set mode request message. The VCU module judges whether the battery allows continuous rechargeable after the remote high voltage is completed, if yes, requests the range extender to start and requests the engine power, if not, does not start the range extender. The TMS module detects the battery set mode, controls the double-way valve to switch the engine waste heat to heat the battery, detects whether the engine water temperature is greater than 25℃, controls the double-way valve to switch the engine waste heat to heat the battery, after stopping heating, the TMS module changes the working mode to 0. After the remote high voltage is completed, the TBOX module receives the heating instruction, the vehicle controller completes the vehicle high voltage power-on, the vehicle controller VCU and the thermal management controller TMS interact to complete the engine waste heat heating function, uses the engine waste heat to heat the power battery, stops heating after reaching the preset temperature or the preset heating time, the VCU controls the vehicle to lower the high voltage and the vehicle sleeps. The BMS module is responsible for detecting the battery temperature and the high voltage state, and sending a set mode heating request, if the temperature reaches the preset, stops heating and sends a set mode request message. The VCU module judges whether the battery allows continuous rechargeable after the remote high voltage is completed, if yes, requests the range extender to start and requests the engine power, if not, does not start the range extender. The TMS module is responsible for real-time monitoring of the battery temperature, dynamic control of the three-way valve to change the heat source from the electric heating PTC to the engine waste heat to heat the power battery to the preset temperature, ensures that the engine waste heat is transferred to the power battery at the best heat exchange efficiency, so that the power battery is quickly heated to the preset working temperature, and the engine works at a small power preset running power to supplement the power battery, maintains the stability of the battery SOC, and ensures that the vehicle performance reaches the best state.

[0091] It should be noted that the above examples are only used for understanding the present application and do not constitute a limitation on the battery remote heating method of the range extended commercial vehicle of the present application, and more forms of simple transformation based on this technical concept are within the protection scope of the present application.

[0092] The present application also provides a battery remote heating device of a range extended commercial vehicle, please refer to Figure 4 The battery remote heating device of the range extended commercial vehicle comprises: An instruction receiving module 10 is configured to determine whether the battery allows recharge when receiving a remote heating instruction; A battery heating module 20 is configured to determine a target heating temperature and a heating mode of a thermal management controller when determining that the battery allows recharge, and heat the battery according to the heating mode, wherein the heating mode comprises a waste heat heating mode and a positive temperature coefficient heater heating mode; A stop determination module 30 is configured to determine whether the battery meets a stop heating condition according to the target heating temperature. A heating stop module 40 is configured to control the high voltage of the vehicle to be stopped when the battery meets the stop heating condition, so as to complete the battery remote heating of the extended-range commercial vehicle.

[0093] The battery remote heating device of the extended-range commercial vehicle provided in the application adopts the battery remote heating method of the extended-range commercial vehicle in the above embodiments, and can solve the technical problem that the battery of the extended-range commercial vehicle equipped with a small battery is prone to performance degradation and power loss when remotely heated by pre-order in a cold region. Compared with the prior art, the battery remote heating device of the extended-range commercial vehicle provided in the application has the same beneficial effects as the battery remote heating method of the extended-range commercial vehicle provided in the above embodiments, and other technical features of the battery remote heating device of the extended-range commercial vehicle are the same as the features disclosed in the above method, which will not be described here.

[0094] In an embodiment, the battery heating module 20 is further configured to, when it is determined that the battery is allowed to be recharged, acquire a current battery temperature, a current environment temperature, and a preset temperature matching rule; determine a target heating temperature according to the current battery temperature, the current environment temperature, and the preset temperature matching rule; send a heating mode determination signal to a thermal management controller, so that the thermal management controller determines and feeds back a current engine water temperature according to the heating mode determination signal, and determines a heating mode according to the current engine water temperature; when the heating mode is a waste heat heating mode, heat the battery according to the waste heat of the engine cooling system; and when the heating mode is a positive temperature coefficient heater heating mode, heat the battery according to the heat generated by the positive temperature coefficient heater.

[0095] In an embodiment, the battery heating module 20 is further configured to acquire a current flow path; when the heating mode is the waste heat heating mode, control a double-way valve to switch the flow path from the current flow path to a waste heat flow path; and control the cooling liquid according to the waste heat flow path, so that the waste heat of the engine cooling system is transmitted to the battery through the waste heat flow path to heat the battery.

[0096] In an embodiment, the battery heating module 20 is further configured to acquire a preset water temperature threshold; send a heating mode determination signal to a thermal management controller, so that the thermal management controller determines and feeds back the current engine water temperature according to the heating mode determination signal; when the current engine water temperature is greater than the preset water temperature threshold, determine that the heating mode is the waste heat heating mode; and when the current engine water temperature is less than or equal to the preset water temperature threshold, determine that the heating mode is the positive temperature coefficient heater heating mode.

[0097] In an embodiment, the battery heating module 20 is further configured to obtain a preset operation power; control engine operation according to the preset operation power; and perform a step of heating according to waste heat of an engine cooling system.

[0098] In an embodiment, the stop determination module 30 is further configured to obtain a current battery temperature, a cumulative heating time, and a preset heating time; determine that the battery satisfies a stop heating condition when the current battery temperature is the target heating temperature or the cumulative heating time is the preset heating time; and determine that the battery does not satisfy the stop heating condition when the current battery temperature is less than the target heating temperature and the cumulative heating time is less than the preset heating time.

[0099] In an embodiment, the heating stop module 40 is further configured to obtain a preset voltage safety requirement; send a high-voltage disconnect instruction to a high-voltage power distribution unit when the battery satisfies the stop heating condition, so that the high-voltage power distribution unit sequentially disconnects a main contactor, a pre-charge contactor, and a high-voltage contactor in a vehicle high-voltage system according to the high-voltage disconnect instruction and feeds back a voltage state; and complete vehicle low-voltage when the voltage state meets the preset voltage safety requirement, so as to complete battery remote heating of the extended-range commercial vehicle.

[0100] The present application provides a battery remote heating device of an extended-range commercial vehicle, which comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the battery remote heating method of the extended-range commercial vehicle in Embodiment One.

[0101] Reference will now be made to the following description Figure 5 which illustrates a structure of the battery remote heating device of the extended-range commercial vehicle suitable for implementing the embodiments of the present application. The battery remote heating device of the extended-range commercial vehicle in the embodiments of the present application can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), and vehicle terminal (e.g., vehicle navigation terminal) and fixed terminals such as digital TVs and desktop computers. Figure 5 The battery remote heating device of the extended-range commercial vehicle shown is merely an example and should not impose any limitation on the functions and use range of the embodiments of the present application.

[0102] AsFigure 5 As shown, the battery remote heating apparatus for extended-range commercial vehicle can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a ROM (Read Only Memory) 1002 or programs loaded from a storage device 1003 into a RAM (Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the battery remote heating apparatus for extended-range commercial vehicle are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the battery remote heating apparatus for extended-range commercial vehicle to communicate wirelessly or wired with other devices to exchange data. Although the battery remote heating apparatus for extended-range commercial vehicle with various systems is shown in the figure, it should be understood that all the systems shown are not required to be implemented or possessed. More or less systems can be alternatively implemented or possessed.

[0103] In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of embodiments of the present disclosure are performed.

[0104] The battery remote heating device of the range-extended commercial vehicle provided in the application adopts the range-extended commercial vehicle battery remote heating method in the above embodiment, and can solve the technical problem that the battery charging and discharging performance of the range-extended commercial vehicle equipped with a small battery is easily attenuated and the battery is easily depleted when the range-extended commercial vehicle is remotely heated by pre-booking in a cold area. Compared with the prior art, the beneficial effects of the battery remote heating device of the range-extended commercial vehicle provided in the application are the same as the beneficial effects of the range-extended commercial vehicle battery remote heating method provided in the above embodiment, and other technical features of the battery remote heating device of the range-extended commercial vehicle are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0105] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0106] The above is merely specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0107] The present application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e. computer programs) for performing the range-extended commercial vehicle battery remote heating method in the above embodiment.

[0108] The computer readable storage medium provided in the application may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of the computer readable storage medium may include, but are not limited to, an electrical connection with one or more conductive wires, a portable computer disk, a hard disk, a RAM (Random Access Memory), a ROM (Read Only Memory), an erasable programmable read-only memory (Erasable Programmable Read Only Memory or flash memory, EPROM), an optical fiber, a CD-ROM (CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used or combined with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any suitable medium, including but not limited to: electrical wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0109] The above computer readable storage medium can be included in the battery remote heating device of the extended range commercial vehicle, or can exist separately without being assembled into the battery remote heating device of the extended range commercial vehicle.

[0110] The above computer readable storage medium carries one or more programs, when the one or more programs are executed by the battery remote heating device of the extended range commercial vehicle, the battery remote heating device of the extended range commercial vehicle: determines whether the battery allows recharging when receiving a remote heating instruction; determines a target heating temperature and a heating mode of a thermal management controller when it is determined that the battery allows recharging, and heats the battery according to the heating mode, wherein the heating mode includes a waste heat heating mode and a positive temperature coefficient heater heating mode; detects whether the battery meets a stop heating condition according to the target heating temperature; controls the vehicle to be lowered in pressure when the battery meets the stop heating condition, to complete the remote heating of the battery of the extended range commercial vehicle.

[0111] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0112] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0113] The modules involved in the embodiments of the present application can be implemented in software or hardware. In some cases, the names of the modules do not constitute a limitation on the modules themselves.

[0114] The readable storage medium provided by the application is a computer readable storage medium, and the computer readable storage medium stores computer readable program instructions (i.e. computer programs) for executing the battery remote heating method of the extended-range commercial vehicle, and can solve the technical problem that the battery charging and discharging performance of the extended-range commercial vehicle equipped with a small battery is easily attenuated and the battery is easily depleted when the extended-range commercial vehicle is remotely heated by reservation in a cold area. Compared with the prior art, the computer readable storage medium provided by the application has the same beneficial effects as the battery remote heating method of the extended-range commercial vehicle provided by the above-mentioned embodiments, and will not be described here.

[0115] The application further provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the battery remote heating method of the extended-range commercial vehicle as described above.

[0116] The computer program product provided by the application can solve the technical problem that the battery charging and discharging performance of the extended-range commercial vehicle equipped with a small battery is easily attenuated and the battery is easily depleted when the extended-range commercial vehicle is remotely heated by reservation in a cold area. Compared with the prior art, the computer program product provided by the application has the same beneficial effects as the battery remote heating method of the extended-range commercial vehicle provided by the above-mentioned embodiments, and will not be described here.

[0117] The above-mentioned embodiments are only part of the embodiments of the application, and do not limit the patent scope of the application, and any equivalent structural transformation made by using the content of the specification and drawings of the application, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A battery remote heating method for a range-extended commercial vehicle, characterized in that, The method comprises: Upon receiving a remote heating instruction, determining whether the battery allows recharging; Upon determining that the battery allows recharging, determining a target heating temperature and a heating mode of a thermal management controller, and heating the battery according to the heating mode, wherein the heating mode comprises a waste heat heating mode and a positive temperature coefficient heater heating mode; According to the target heating temperature, detecting whether the battery meets a stop heating condition; Upon the battery meeting the stop heating condition, controlling the vehicle to lower the high pressure to complete the battery remote heating of the extended-range commercial vehicle.

2. The method of claim 1, wherein, The step of determining a target heating temperature and a heating mode of a thermal management controller upon determining that the battery allows recharging, and heating the battery according to the heating mode comprises: Upon determining that the battery allows recharging, obtaining a current battery temperature, a current environment temperature, and a preset temperature matching rule; According to the current battery temperature, the current environment temperature, and the preset temperature matching rule, determining a target heating temperature; Sending a heating mode judgment signal to the thermal management controller to enable the thermal management controller to determine and feed back a current engine water temperature according to the heating mode judgment signal, and determine a heating mode according to the current engine water temperature; When the heating mode is a waste heat heating mode, heating the battery according to the waste heat of the engine cooling system; When the heating mode is a positive temperature coefficient heater heating mode, heating the battery according to the heat generated by the positive temperature coefficient heater.

3. The method of claim 2, wherein, The step of heating the battery according to the waste heat of the engine cooling system when the heating mode is a waste heat heating mode comprises: Obtaining a current flow path; When the heating mode is a waste heat heating mode, controlling a double-way valve to switch the flow path from the current flow path to a waste heat flow path; According to the waste heat flow path, controlling the cooling liquid to enable the waste heat of the engine cooling system to be transmitted to the battery through the waste heat flow path to heat the battery.

4. The method of claim 2, wherein, The step of sending a heating mode judgment signal to the thermal management controller to enable the thermal management controller to determine and feed back a current engine water temperature according to the heating mode judgment signal, and determine a heating mode according to the current engine water temperature comprises: Obtaining a preset water temperature threshold; Sending a heating mode judgment signal to the thermal management controller to enable the thermal management controller to determine and feed back the current engine water temperature according to the heating mode judgment signal; When the current engine water temperature is greater than the preset water temperature threshold, determining that the heating mode is a waste heat heating mode; When the current engine water temperature is less than or equal to the preset water temperature threshold, determining that the heating mode is a positive temperature coefficient heater heating mode.

5. The method of claim 2, wherein, The step of heating the battery according to the waste heat of the engine cooling system when the heating mode is a waste heat heating mode further comprises: Obtaining a preset running power; Controlling the engine to run according to the preset running power, and performing the step of heating according to the waste heat of the engine cooling system.

6. The method of claim 1, wherein, The step of detecting whether the battery meets a stop heating condition according to the target heating temperature comprises: Obtaining a current battery temperature, a cumulative heating time, and a preset heating time; determining that the battery meets the stop heating condition when the current temperature of the battery is the target heating temperature or the cumulative heating time is the preset heating time; determining that the battery does not meet the stop heating condition when the current temperature of the battery is less than the target heating temperature and the cumulative heating time is less than the preset heating time.

7. The method of claim 1, wherein, The step of controlling the high voltage of the vehicle to complete the remote battery heating of the extended-range commercial vehicle when the battery meets the stop heating condition comprises: obtaining a preset voltage safety requirement; sending a high voltage disconnect instruction to a high voltage distribution unit when the battery meets the stop heating condition, so that the high voltage distribution unit sequentially disconnects a main contactor, a pre-charge contactor and a high voltage contactor in a high voltage system of the vehicle according to the high voltage disconnect instruction and feeds back a voltage state; completing the remote battery heating of the extended-range commercial vehicle when the voltage state meets the preset voltage safety requirement.

8. A battery remote heating device for a range-extended commercial vehicle, characterized in that The device comprises: an instruction receiving module configured to determine whether the battery is allowed to be recharged when a remote heating instruction is received; a battery heating module configured to determine a target heating temperature and a heating mode of a thermal management controller when it is determined that the battery is allowed to be recharged, and heat the battery according to the heating mode, wherein the heating mode comprises a waste heat heating mode and a positive temperature coefficient heater heating mode; a stop determining module configured to detect whether the battery meets a stop heating condition according to the target heating temperature; a heating stop module configured to control the high voltage of the vehicle to complete the remote battery heating of the extended-range commercial vehicle when the battery meets the stop heating condition.

9. A battery remote heating device for a range-extended commercial vehicle, characterized in that The device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the remote battery heating method of the extended-range commercial vehicle according to any one of claims 1 to 7.

10. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the remote battery heating method of the extended-range commercial vehicle according to any one of claims 1 to 7.

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