Heating method, device, apparatus, medium, and vehicle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
- Filing Date
- 2023-07-18
- Publication Date
- 2026-06-02
Smart Images
Figure CN119329255B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of vehicle control technology, and in particular relates to a heating method, device, equipment, medium and vehicle. Background Technology
[0002] Currently, hybrid vehicles typically use a combination of electric heaters (Positive Temperature Coefficient, PTC) and engine waste heat for heating.
[0003] Typically, due to subjective limitations such as noise, vibration, harshness (NVH), and fuel consumption, engine speed is restricted, resulting in insufficient waste heat generated by the engine, thus necessitating the activation of a PTC heater. However, compared to engine waste heat, PTC heating consumes more energy. Summary of the Invention
[0004] This application provides a heating method, apparatus, device, medium, and vehicle, which can at least solve the problem in the prior art of wasting battery power, which may lead to the vehicle being unable to reach its destination.
[0005] In a first aspect, embodiments of this application provide a heating method, the method comprising:
[0006] When the electric heater PTC of the target vehicle is activated, obtain the target scene in which the target vehicle is located;
[0007] Based on the pre-defined correspondence between scenarios and strategies, determine the target strategy corresponding to the target scenario;
[0008] The target strategy is to increase the engine speed of the target vehicle in order to generate waste heat from the engine and increase the temperature of the target vehicle based on the waste heat.
[0009] When the temperature of the target vehicle reaches the target temperature threshold, the PTC is turned off.
[0010] Secondly, embodiments of this application provide a heating device, which includes:
[0011] The acquisition module is used to acquire the target scene where the target vehicle is located when the electric heater PTC of the target vehicle is started.
[0012] The determination module is used to determine the target strategy corresponding to the target scenario based on the preset correspondence between scenarios and strategies;
[0013] The speed control module is used to increase the engine speed of the target vehicle according to the target strategy, so as to generate waste heat from the engine and increase the temperature of the target vehicle based on the waste heat.
[0014] The switch control module is used to shut down the PTC when the temperature of the target vehicle reaches the target temperature threshold.
[0015] Thirdly, embodiments of this application provide an electronic device, the device comprising: a processor and a memory storing computer program instructions;
[0016] When the processor executes the computer program instructions, it implements the heating method as shown in any embodiment of the first aspect.
[0017] Fourthly, embodiments of this application provide a computer storage medium storing computer program instructions, which, when executed by a processor, implement the heating method shown in any embodiment of the first aspect.
[0018] Fifthly, embodiments of this application also provide a vehicle, the vehicle comprising at least one of the following:
[0019] The heating device as described in the second aspect;
[0020] Electronic devices as described in the third aspect;
[0021] Computer storage media as described in the fourth aspect.
[0022] The heating method, apparatus, device, medium, and vehicle of this application embodiment can, when the PTC of the target vehicle is started, obtain the target scenario in which the target vehicle is located, and determine the target strategy corresponding to the target scenario according to the preset correspondence between scenarios and strategies. Then, the engine speed of the target vehicle can be increased according to the target strategy to generate waste heat from the engine and raise the temperature of the target vehicle based on the waste heat. When the temperature of the target vehicle reaches the target temperature threshold, the PTC is turned off. In this way, when the PCT is started, the waste heat generated by the engine can be increased by increasing the engine speed, so that the temperature of the target vehicle reaches the target temperature threshold more quickly, thereby turning off the PTC as soon as possible and reducing the energy consumption of the PTC.
[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1This is a flowchart illustrating a heating method provided in one embodiment of this application;
[0026] Figure 2 This is a schematic diagram of an engine outlet water temperature provided in one embodiment of this application;
[0027] Figure 3 This is a schematic diagram of an NVH value provided in one embodiment of this application;
[0028] Figure 4 This is a schematic diagram of a battery heating power provided in one embodiment of this application;
[0029] Figure 5 This is a schematic diagram of a battery temperature rise curve provided in one embodiment of this application;
[0030] Figure 6 This is a schematic diagram illustrating the heating power consumption of a vehicle according to one embodiment of this application;
[0031] Figure 7 This is a schematic diagram of another battery temperature rise curve provided in one embodiment of this application;
[0032] Figure 8 This is a schematic diagram of the structure of a heating device provided in one embodiment of this application;
[0033] Figure 9 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application. Detailed Implementation
[0034] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0035] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is 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 a process, method, article, or apparatus. Without further limitations, 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 said element.
[0037] As pure electric vehicles become increasingly popular in the market, their high air conditioning energy consumption in low temperatures has become a growing concern. The industry has also developed various hardware and functional solutions to address and optimize this problem.
[0038] In winter, traditional gasoline vehicles operate their engines for extended periods, so the engine coolant temperature can be used to heat the entire vehicle space without requiring additional heating elements. Therefore, the energy consumption of gasoline vehicles does not change drastically in winter.
[0039] However, current hybrid vehicles primarily use a combination of PTC heating and the recovery of waste heat from the engine, motor, and battery to heat the passenger compartment and battery.
[0040] However, the engine's start-up and workload vary depending on the scenario, resulting in different amounts of waste heat. This also applies to different scenarios requiring PTC heating, and the energy consumption of PTC is significantly higher than the free waste heat from the engine.
[0041] Based on this, embodiments of this application provide a heating method, apparatus, device, medium, and vehicle. When the PTC (Power Transmission Control) of a target vehicle is started, the method can acquire the target scenario of the target vehicle and determine the target strategy corresponding to the target scenario based on a preset correspondence between scenarios and strategies. Then, the engine speed of the target vehicle can be increased according to the target strategy to generate waste heat and raise the temperature of the target vehicle based on this waste heat. Once the temperature of the target vehicle reaches the target temperature threshold, the PTC is shut off. In this way, when the PTC is started, increasing the engine speed increases the waste heat generated by the engine, allowing the target vehicle temperature to reach the target temperature threshold more quickly, thereby enabling the PTC to be shut off as soon as possible and reducing the energy consumption of the PTC.
[0042] The following is a detailed description of a heating method provided by an embodiment of this application.
[0043] Figure 1 The diagram illustrates a heating method according to an embodiment of this application. It should be noted that the entity performing this heating method can be a heating device. Furthermore, the aforementioned entity does not constitute a limitation on this application.
[0044] like Figure 1 As shown, the heating method may include the following steps:
[0045] S110: When the electric heater PTC of the target vehicle is started, obtain the target scene where the target vehicle is located;
[0046] S120, Based on the preset correspondence between scenarios and strategies, determine the target strategy corresponding to the target scenario;
[0047] S130, according to the target strategy, increase the engine speed of the target vehicle so that the engine generates waste heat and increases the temperature of the target vehicle based on the waste heat;
[0048] S140, when the temperature of the target vehicle reaches the target temperature threshold, turn off the PTC.
[0049] Therefore, when the target vehicle's PTC is started, the target scenario of the target vehicle can be obtained. Based on the pre-defined correspondence between scenarios and strategies, a target strategy corresponding to the target scenario can be determined. Then, the engine speed of the target vehicle can be increased according to the target strategy to generate waste heat and raise the temperature of the target vehicle based on the waste heat. Once the temperature of the target vehicle reaches the target temperature threshold, the PTC is turned off. In this way, when the PCT is started, increasing the engine speed will increase the waste heat generated by the engine, allowing the target vehicle temperature to reach the target temperature threshold more quickly, thereby enabling the PTC to be turned off as soon as possible and reducing the energy consumption of the PTC.
[0050] Regarding S110, the target vehicle can be a hybrid vehicle. In low-temperature scenarios, if the residual heat generated by the engine is insufficient, the PTC will be activated to heat the target vehicle. If the target vehicle's PTC is activated, the target scenario in which the target vehicle is located can be obtained.
[0051] Here, the low-temperature usage scenarios of hybrid vehicles can be pre-defined, and the engine waste heat recovery status and whether PTC needs to be activated in each scenario can be marked, as shown in Table 1.
[0052] Table 1 - Low Temperature Scenarios
[0053] serial number Scene Engine waste heat recovery PTC 1 Low temperature charging none need 2 Pure electric mode none need 3 External discharge of the vehicle while stationary none need 4 Low-temperature hybrid driving powerful unnecessary 5 Low-temperature in-situ power replenishment weak need 6 Low-temperature charging preheating weak need 7 Low battery remote air conditioning warm-up weak need
[0054] As shown in Table 1, in scenarios 1-3, the engine does not meet the conditions for starting, therefore the temperature of the target vehicle cannot be increased based on the waste heat generated by the engine. Scenario 4 represents the driving state with the engine running, where the waste heat from the engine is sufficient to directly meet the vehicle's thermal requirements.
[0055] In scenarios 5-7, the target vehicle needs sufficient heat. However, under the current circumstances, due to subjective limitations such as NVH and fuel consumption, the engine power and speed are limited, resulting in insufficient residual heat generated by the engine. When the engine outlet temperature is determined to be lower than a certain set threshold, it is determined that the engine residual heat is insufficient, and the PTC will be activated to heat the engine to meet the heat requirements of the target vehicle.
[0056] The target scenario can be one of scenarios 5-7. Specifically, the target scenario can be one of the following: a scenario where the engine is running at a first speed to charge the target vehicle's battery while the vehicle is parked; a scenario where the engine is not started and the target vehicle needs to charge its battery; or a scenario where the engine is not started while the vehicle is parked and the target vehicle needs to be warmed up.
[0057] Regarding S120, different scenarios can correspond to different strategies. This strategy could be used to increase the engine speed of the target vehicle, and the correspondence between different scenarios and strategies can be preset. After determining the target scenario, the target strategy corresponding to the target scenario can be determined based on the preset correspondence between scenarios and strategies.
[0058] Regarding S130, the waste heat can be the heat generated by the engine during operation. When the engine starts, the engine water circuit is connected to the vehicle's water circuit via a control valve, allowing the waste heat generated by the engine to be transferred to various parts, thereby heating the target vehicle based on the waste heat generated by the engine and raising the vehicle's temperature. The vehicle's water circuit can include the passenger compartment, power battery, motor, and engine, among other components.
[0059] Typically, due to limitations imposed by factors such as NVH (noise, vibration, and harshness) and fuel consumption, engine speed is usually restricted within a certain range. Therefore, the waste heat generated by the engine may not be sufficient to meet the heat requirements of the target vehicle, necessitating the activation of a PTC (Power Transmission Control) system for heating. In this situation, based on the heating method provided in this application, to reduce PTC energy consumption, the requirements for NVH and fuel consumption can be appropriately reduced. The engine speed of the target vehicle can be increased according to the target strategy to heat the target vehicle based on the waste heat generated by the engine.
[0060] In some implementations, the target scenario can be a scenario where the engine is running at a first speed to charge the target vehicle's battery while the vehicle is parked, i.e., a low-temperature stationary charging scenario. To reduce PTC power consumption and increase charging speed when the target vehicle is stationary charging at low temperatures, S130 may include:
[0061] The engine speed is increased to a second speed so that the engine generates waste heat and the temperature of the whole vehicle is increased based on the waste heat.
[0062] Here, the first engine speed can be a preset speed corresponding to a low-temperature stationary charging scenario. Considering factors such as NVH and fuel consumption, the first engine speed is generally low. To avoid the PTC consuming a large amount of electrical energy, the requirements for NVH and fuel consumption can be appropriately reduced, and the engine speed can be increased to a second engine speed, allowing the engine to generate more waste heat to raise the overall vehicle temperature. This second engine speed can be the speed corresponding to the engine's optimal efficiency point under static conditions. The second engine speed can be higher than the first engine speed.
[0063] For example, if the target vehicle is stationary and the engine is charging the battery at a speed of R0 (i.e., the first speed), and the PTC is heating the target vehicle at a power of P0 because the target vehicle is in a low-temperature environment, then in order to reduce the power consumption of the PTC, the engine speed can be increased to R0+ΔR0 (i.e., the second speed).
[0064] In this way, when the target vehicle is being charged in place at a low temperature, the engine can charge the battery in a more efficient range, increasing the charging speed, reducing the user's waiting time, and at the same time increasing the residual heat to heat the target vehicle, reducing the PTC's energy consumption.
[0065] In some implementations, to avoid excessively reducing performance in areas such as NVH and fuel consumption, resulting in a poor user experience, the method may further include the following after increasing the engine speed to the second speed:
[0066] Detect whether the temperature of the target vehicle has reached the first temperature threshold;
[0067] When the temperature of the target vehicle reaches the first temperature threshold, the engine speed is reduced to the first speed.
[0068] Here, running the engine at the second speed will reduce performance in areas such as NVH and fuel consumption. In order to avoid poor user experience due to prolonged low performance in NVH and fuel consumption, and to avoid the risk of heat damage due to excessively high temperature of the target vehicle, the engine speed can be increased to the second speed, and then the temperature of the target vehicle can be checked to see if it has reached the first temperature threshold. If the temperature of the target vehicle has reached the first temperature threshold, the engine speed can be reduced to the first speed.
[0069] When the temperature of the target vehicle is lower than the target temperature threshold, the engine speed will be increased to the second speed again.
[0070] In some implementations, to avoid frequent high-speed engine operation, the first temperature threshold can be the sum of the standard temperature required by the target vehicle and a preset temperature difference. The standard temperature can be the engine outlet coolant temperature that meets the heating load requirements of the target vehicle without PTC activation, and the preset temperature difference can be positively correlated with the battery's remaining charge. Specifically, a mapping table between the preset temperature difference and the remaining charge can be pre-set, and the current preset temperature difference is determined based on this mapping table and the current remaining charge.
[0071] For example, the first temperature threshold can be T1 + ΔT0. Where T1 can be the standard temperature and ΔT0 can be a preset temperature difference.
[0072] In this way, by setting the first temperature threshold higher than the standard temperature required by the target vehicle, overheating can be achieved. This means heating for an extended period, storing the excess heat in the hot water of the water circuit, preventing a rapid increase in engine speed. This balances the time the engine operates at low and high speeds, and also balances the time spent on performance aspects such as NVH and fuel consumption. Furthermore, since the preset temperature difference is positively correlated with the battery's remaining charge, the overheating range can be dynamically adjusted to prevent excessive heating of the battery by wasting engine oil after the battery is fully charged.
[0073] For example, when the engine outlet coolant temperature is T1, the heating load requirement of the target vehicle can be met without activating the PTC. That is, both the target temperature threshold and the standard temperature can be T1. If the target vehicle is stationary, the engine is charging the battery at speed R0, and because the target vehicle is in a low-temperature environment, the PTC is heating the target vehicle at power P0. To reduce PTC power consumption, the engine speed can be increased to R0+ΔR0 to heat the target vehicle. When the engine outlet coolant temperature reaches T1, the PTC can be turned off, but the engine continues to run at speed R0+ΔR0. When the engine outlet coolant temperature reaches T1+ΔT0, the engine speed is reduced to R0. With the water-thermal cycle, the engine outlet coolant temperature will continue to decrease. When the engine outlet coolant temperature is below T1, the engine speed will be increased to R0+ΔR0 again, repeating the above process.
[0074] For example, when the target vehicle is in a low-temperature stationary charging scenario, the engine outlet water temperature corresponding to the heating method in the prior art (i.e., the engine runs at the first speed continuously) and the heating method provided in the embodiments of this application can be as follows: Figure 2 As shown. The first water temperature is the engine outlet water temperature corresponding to the heating method in the prior art, the second water temperature is the engine outlet water temperature corresponding to the heating method provided in this application embodiment, and the thermal equilibrium water temperature can be the aforementioned standard temperature or target temperature threshold.
[0075] When the target vehicle is in a low-temperature stationary charging scenario, the NVH values corresponding to the existing heating methods (i.e., the engine runs at the first speed continuously) and the heating method provided in this application embodiment can be as follows: Figure 3 As shown. The first NVH value can be the NVH value corresponding to a heating method in the prior art, and the second NVH value can be the NVH value corresponding to the heating method provided in the embodiments of this application.
[0076] In this way, by reducing the engine speed when the target vehicle's temperature reaches the first temperature threshold, the problem of poor user experience caused by prolonged high engine speeds, such as low NVH and fuel consumption, can be avoided. It can also prevent the target vehicle from overheating due to continuous high-power heating, which could lead to heat damage.
[0077] In some implementations, to further ensure user experience and avoid excessive reduction in performance such as NVH and fuel consumption, the aforementioned reduction of engine speed to a first speed when the target vehicle's temperature reaches a first temperature threshold may include:
[0078] If the temperature of the target vehicle does not reach the first temperature threshold, obtain the first duration for which the engine continues to run at the second speed.
[0079] Determine whether the first duration has reached the first duration threshold;
[0080] If the first duration threshold is reached, the engine speed is reduced to the first speed.
[0081] Obtain the second duration during which the engine continues to run at the first speed;
[0082] Determine whether the second duration has reached the second duration threshold;
[0083] If the second duration threshold is reached, the engine speed is increased to the second speed.
[0084] If the target vehicle's temperature has not reached the first temperature threshold, the engine will continue to run at the second speed for a first duration until the target vehicle's temperature reaches the first temperature threshold, at which point the engine speed will be reduced to the first speed.
[0085] Here, if the engine runs at high speed at the second speed for a period of time that reaches the first time threshold, even if the temperature of the target vehicle has not yet reached the first temperature threshold, the engine speed can be reduced to the first speed first, and after a period of time (i.e., the second time threshold), the speed can be increased to the second speed for heating. This cycle continues until the temperature of the target vehicle reaches the first temperature threshold.
[0086] The first and second duration thresholds can be set according to actual needs and are not limited here.
[0087] In this way, by intermittently reducing the engine speed, it is possible to better avoid the problem of prolonged low performance in terms of NVH and fuel consumption caused by prolonged high-speed engine operation, thereby further improving the user experience and reducing the risk of heat damage.
[0088] In some implementations, the target scenario can be a scenario where the engine is not started and the target vehicle needs to charge the battery, i.e., a low-temperature charging preheating scenario. In order to reduce PTC power consumption and increase heating speed during low-temperature charging preheating of the target vehicle, S130 may include:
[0089] Start the engine and increase its speed to the third speed to generate residual heat and raise the battery temperature based on this residual heat.
[0090] Here, if the target vehicle's battery state of charge (SOC) is too low (below a preset threshold), the engine must be started to meet normal driving needs. Therefore, the engine can charge the battery and generate enough residual heat to heat the battery, so there is no need to start the PTC. Thus, in this scenario, there is no need to reduce the PTC power consumption.
[0091] If the target vehicle's State of Charge (SOC) is not below the preset threshold and can meet driving needs, the engine will not be triggered. If it needs to proceed to a charging station to charge the target vehicle's battery, the Power Toll Collection (PTC) system needs to be activated to preheat the battery, thus increasing the charging speed upon arrival at the charging station. In this scenario, the activation of the PTC consumes electrical energy, so its energy consumption needs to be reduced. Specifically, the user can preset the target vehicle to a non-pure electric priority mode. In this mode, the engine typically will not start if the target vehicle's SOC is not below the preset threshold, placing the target vehicle in a low-temperature charging preheating scenario. When the target vehicle navigates to or is close to a charging station, it can be assumed that the target vehicle needs to charge its battery. The charging station can be a High Power Charging (HPC) station.
[0092] Specifically, when the target vehicle is in a low-temperature charging preheating scenario, the engine can be started and the engine speed can be increased from 0 to the third speed. The engine and PTC work together to heat the battery. When thermal equilibrium is reached, the PTC can be turned off, the engine can be kept running, and the target vehicle can be driven while the residual heat continues to meet the battery heating needs.
[0093] The third speed can be preset according to actual needs, and is not limited here.
[0094] For example, in a low-temperature charging preheating scenario for the target vehicle, the battery heating power corresponding to the heating methods in the prior art (i.e., the engine is not started, and heating is done by PTC) and the heating method provided in the embodiments of this application can be as follows: Figure 4 As shown. The first heating power is the battery heating power corresponding to the heating method in the prior art, the second heating power is the battery heating power corresponding to the heating method provided in this application embodiment, and the target heating power can be the heating power required by the battery.
[0095] When the target vehicle is in a low-temperature charging preheating scenario, the battery temperature rise curves corresponding to the existing heating methods (i.e., the engine is not started, and heating is done by PTC) and the heating methods provided in the embodiments of this application can be as follows: Figure 5 As shown. The first temperature rise curve is the battery temperature rise curve corresponding to the heating method in the prior art, and the second temperature rise curve is the battery temperature rise curve corresponding to the heating method provided in the embodiments of this application.
[0096] In this way, when the target vehicle is being preheated for charging at low temperatures, the engine can be started, allowing the generator and PTC to heat the battery together, reducing PTC power consumption and increasing the heating speed.
[0097] In some implementations, the target scenario can be a scenario where the engine is not started while the vehicle is parked and needs to be preheated, i.e., a scenario where the target vehicle is warmed up remotely with low battery power. In order to reduce PTC power consumption and increase heating speed when the target vehicle is warmed up remotely with low battery power, S130 may include:
[0098] Obtain the target metrics for the target vehicle;
[0099] Determine whether the target indicator is lower than the target threshold corresponding to the target indicator;
[0100] If the target index is below the target threshold, start the engine and increase the engine speed to the fourth speed to generate residual heat and raise the temperature of the whole vehicle based on the residual heat.
[0101] Here, when the target vehicle receives a warm-up command while parked, if the vehicle is plugged in for charging, the charging station's terminal current can be used for heating. The battery can also be additionally heated so that after the charging station is unplugged, the residual heat from the battery can be reused to reheat the entire vehicle through the water circuit during use. In this scenario, since the terminal current can be used for heating, there is no need to consider reducing PTC power consumption.
[0102] When a vehicle receives a warm-up command while it is parked, if the vehicle is not plugged in for charging, it can be considered a low-battery remote air conditioning warm-up scenario.
[0103] Specifically, the target indicators may include temperature and / or State of Charge (SOC). When the target vehicle is in a low-battery remote air conditioning warm-up scenario, the target vehicle's temperature and / or SOC can be acquired, and it can be determined whether the target vehicle's temperature is lower than a second temperature threshold and / or whether the target vehicle's SOC is lower than a SOC threshold. If the temperature is lower than the second temperature threshold and / or the SOC is lower than the SOC threshold, the engine can be started, and the engine speed can be increased from 0 to a fourth speed. The engine and PTC work together to heat the target vehicle, meeting the user's need for rapid warm-up. When thermal equilibrium is reached, the PTC can be turned off.
[0104] The fourth rotation speed, the second temperature threshold, and the SOC threshold can all be preset according to actual needs, and are not limited here.
[0105] For example, in a scenario where the target vehicle is in a low-battery, remote air conditioning warm-up scenario, the total vehicle heating power consumption corresponding to the existing heating method (i.e., heating only via PTC) and the heating method provided in this application embodiment can be as follows: Figure 6 As shown. The first power consumption is the vehicle heating power consumption corresponding to the heating method in the prior art, and the second power consumption is the vehicle heating power consumption corresponding to the heating method provided in this application embodiment.
[0106] When the target vehicle is in a scenario where the battery is low and the air conditioning is being used for remote warm-up, the battery temperature rise curves corresponding to the existing heating methods (i.e., heating only via PTC) and the heating methods provided in this application embodiment can be as follows: Figure 7 As shown. The third temperature rise curve is the battery temperature rise curve corresponding to the heating method in the prior art, and the fourth temperature rise curve is the battery temperature rise curve corresponding to the heating method provided in this application embodiment. The target temperature is the temperature required by the battery.
[0107] In this way, when the target vehicle is remotely warming up the air conditioner due to low battery, the engine can be started, allowing the generator and PTC to heat the battery together, reducing PTC power consumption and increasing the heating speed.
[0108] Regarding S140, the PTC can be shut off when the target vehicle's temperature reaches the target temperature threshold. Because the engine runs at a higher speed, generating more waste heat, the target vehicle warms up quickly, so the PTC can be shut off as early as possible to reduce PTC energy consumption.
[0109] The target vehicle temperature can be the engine outlet coolant temperature. The target temperature threshold can be the engine outlet coolant temperature that meets the heating load requirements of the target vehicle without turning on the PTC (Power Transmission Control Center). Reaching the target temperature threshold means that the engine outlet coolant temperature meets the heating load requirements of the target vehicle; in other words, it means that thermal equilibrium has been reached. The target temperature threshold may vary in different scenarios.
[0110] Furthermore, in some embodiments, to better suit user needs, the method may also include:
[0111] In response to the user's input on the vehicle's energy mode, a target mode is determined, which can be either the default mode or the energy-saving mode.
[0112] When the target mode is the default mode, the engine is controlled to operate according to the conventional strategy shown in Table 1;
[0113] When the target mode is energy-saving mode, the engine operation is controlled according to the target strategy in the heating method provided in the embodiments of this application.
[0114] In this way, users can freely switch the vehicle's energy mode according to their own needs, thereby flexibly controlling the vehicle's heating strategy.
[0115] Therefore, compared with conventional engine waste heat recovery methods that simply pass hot water from the engine into the vehicle's heating circuit, the heating method provided in this application actively controls the engine's start-up, speed, and load, enabling the engine to respond not only to driving needs but also to heating needs in special scenarios. It can optimize strategies for scenarios where the vehicle's heating demand is strong but the engine speed is limited (such as scenarios 5-7 in Table 1), dynamically meeting the highly subjective needs of users such as NVH and fuel consumption, while reducing the use of PTC, improving engine power generation efficiency, and thus saving the low-temperature heating energy consumption of PTC.
[0116] Based on the same inventive concept, this application also provides a heating device, and the heating method provided in this application can be executed by the heating device. The following is in conjunction with... Figure 8 The heating device provided in the embodiments of this application will be described in detail.
[0117] Figure 8 A schematic diagram of a heating device provided in one embodiment of this application is shown.
[0118] like Figure 8 As shown, the heating device may include:
[0119] The acquisition module 801 is used to acquire the target scene where the target vehicle is located when the electric heater PTC of the target vehicle is started.
[0120] The determination module 802 is used to determine the target strategy corresponding to the target scenario based on the preset correspondence between scenarios and strategies;
[0121] The speed control module 803 is used to increase the engine speed of the target vehicle according to the target strategy, so as to generate waste heat from the engine and increase the temperature of the target vehicle based on the waste heat.
[0122] The switch control module 804 is used to shut down the PTC when the temperature of the target vehicle reaches the target temperature threshold.
[0123] Therefore, when the target vehicle's PTC is started, the target scenario of the target vehicle can be obtained. Based on the pre-defined correspondence between scenarios and strategies, a target strategy corresponding to the target scenario can be determined. Then, the engine speed of the target vehicle can be increased according to the target strategy to generate waste heat and raise the temperature of the target vehicle based on the waste heat. Once the temperature of the target vehicle reaches the target temperature threshold, the PTC is turned off. In this way, when the PCT is started, increasing the engine speed will increase the waste heat generated by the engine, allowing the target vehicle temperature to reach the target temperature threshold more quickly, thereby enabling the PTC to be turned off as soon as possible and reducing the energy consumption of the PTC.
[0124] In some implementations, the target scenario is where the engine is running at a first speed to charge the target vehicle's battery while the vehicle is stationary. To reduce PTC power consumption and increase charging speed when the target vehicle is charging in place at low temperatures, the speed control module 803 may include:
[0125] The first speed control submodule is used to increase the engine speed to a second speed so that the engine generates waste heat and the temperature of the whole vehicle is increased based on the waste heat. The second speed is the speed corresponding to the optimal efficiency point of the engine under static conditions, and the second speed is greater than the first speed.
[0126] In some embodiments, to avoid excessively reducing performance in areas such as NVH and fuel consumption, resulting in a poor user experience, the device may further include:
[0127] The detection submodule is used to detect whether the temperature of the target vehicle has reached the first temperature threshold after the engine speed is increased to the second speed.
[0128] The second speed control submodule is used to reduce the engine speed to a first speed when the temperature of the target vehicle reaches a first temperature threshold.
[0129] In some implementations, to further ensure user experience and avoid excessive reduction in performance such as NVH and fuel consumption, the second speed control submodule may include:
[0130] The first acquisition unit is used to acquire the first duration for which the engine runs continuously at the second speed when the temperature of the target vehicle does not reach the first temperature threshold.
[0131] The first judgment unit is used to determine whether the first duration has reached the first duration threshold.
[0132] The first speed control unit is used to reduce the engine speed to a first speed when the first duration reaches a first duration threshold.
[0133] The second acquisition unit is used to acquire the second duration during which the engine continues to run at the first speed.
[0134] The second judgment unit is used to determine whether the second duration has reached the second duration threshold.
[0135] The second speed control unit is used to increase the engine speed to the second speed when the second duration reaches the second duration threshold.
[0136] The iteration unit is used to return the first duration during which the engine runs continuously at the second speed while the temperature of the target vehicle has not reached the first temperature threshold, until the temperature of the target vehicle reaches the first temperature threshold, at which point the engine speed is reduced to the first speed.
[0137] In some implementations, to avoid frequent triggering of high-speed engine operation, the first temperature threshold is the sum of the standard temperature required by the target vehicle and the preset temperature difference, and the preset temperature difference is positively correlated with the battery charge to be replenished.
[0138] In some implementations, the target scenario is one where the engine is not started and the target vehicle needs to charge the battery. To reduce PTC power consumption and increase heating speed during low-temperature charging preheating of the target vehicle, the speed control module 803 may include:
[0139] The third speed control submodule is used to start the engine and increase the engine speed to the third speed so that the engine generates waste heat and increases the battery temperature based on the waste heat.
[0140] In some implementations, the target scenario is a situation where the engine is not started while the vehicle is parked and needs to be preheated. To reduce PTC power consumption and increase heating speed when the target vehicle is remotely warming up the air conditioner with low battery, the speed control module 803 may include:
[0141] The acquisition submodule is used to acquire the target indicators of the target vehicle, including temperature and / or battery state of charge (SOC).
[0142] The judgment submodule is used to determine whether the target indicator is lower than the target threshold corresponding to the target indicator;
[0143] The fourth speed control submodule is used to start the engine and increase the engine speed to the fourth speed when the target index is lower than the target threshold, so that the engine can generate waste heat and increase the temperature of the whole vehicle based on the waste heat.
[0144] Figure 9 A schematic diagram of the structure of an electronic device provided in one embodiment of this application is shown.
[0145] like Figure 9 As shown, the electronic device 9 is a structural diagram of an exemplary hardware architecture of an electronic device capable of implementing the heating method and heating device according to the embodiments of this application. This electronic device may refer to the electronic device in the embodiments of this application.
[0146] The electronic device 9 may include a processor 901 and a memory 902 storing computer program instructions.
[0147] Specifically, the processor 901 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.
[0148] Memory 902 may include mass storage for data or instructions. For example, and not limitingly, memory 902 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 902 may include removable or non-removable (or fixed) media. Where appropriate, memory 902 may be internal or external to an integrated gateway disaster recovery device. In a particular embodiment, memory 902 is non-volatile solid-state memory. In a particular embodiment, memory 902 may include read-only memory (ROM), random access memory (RAM), disk storage media device, optical storage media device, flash memory device, electrical, optical, or other physical / tangible memory storage device. Thus, generally, memory 902 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of this application.
[0149] The processor 901 implements any of the heating methods described in the above embodiments by reading and executing computer program instructions stored in the memory 902.
[0150] In one example, the electronic device may also include a communication interface 903 and a bus 904. Wherein, for example... Figure 9 As shown, the processor 901, memory 902, and communication interface 903 are connected through bus 904 and complete communication with each other.
[0151] The communication interface 903 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.
[0152] Bus 904 includes hardware, software, or both, that couples components of an electronic device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 904 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.
[0153] The electronic device can perform the heating method described in the embodiments of this application, thereby achieving the combination Figures 1 to 8 The heating method and apparatus described.
[0154] Furthermore, in conjunction with the heating methods described in the above embodiments, this application embodiment can provide a computer storage medium for implementation. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the heating methods described in the above embodiments.
[0155] Furthermore, in conjunction with the heating methods described in the above embodiments, the present invention can provide a vehicle to implement this method. This vehicle includes at least one of the heating device, electronic device, and computer-readable storage medium described in the above embodiments.
[0156] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.
[0157] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.
[0158] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.
[0159] The aspects of this application have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block in 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, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.
[0160] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.
Claims
1. A heating method, characterized in that, The method includes: When the electric heater of the target vehicle is activated, obtain the target scene in which the target vehicle is located; Based on the pre-defined correspondence between scenarios and strategies, determine the target strategy corresponding to the target scenario; The target strategy is to increase the engine speed of the target vehicle so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat. When the temperature of the target vehicle reaches the target temperature threshold, the electric heater is turned off; The target scenario includes the engine not starting; The method further includes: In response to the user's input on the vehicle's energy mode, a target mode is determined; wherein the target mode includes a default mode and an energy-saving mode; When the target mode is the default mode, the engine is controlled to operate according to the conventional strategy; When the target mode is the energy-saving mode, the engine is controlled to operate according to the target strategy.
2. The method as described in claim 1, characterized in that, The target scenario is a scenario where the engine is running at a first speed to charge the battery of the target vehicle while the vehicle is parked. The step of increasing the engine speed of the target vehicle according to the target strategy to generate waste heat and raise the temperature of the target vehicle based on this waste heat includes: The engine speed is increased to a second speed so that the engine generates waste heat and the temperature of the whole vehicle is increased based on the waste heat. The second speed is the speed corresponding to the optimal efficiency point of the engine under static conditions, and the second speed is greater than the first speed.
3. The method as described in claim 2, characterized in that, After increasing the engine speed to the second speed, the method further includes: Detect whether the temperature of the target vehicle has reached a first temperature threshold; When the temperature of the target vehicle reaches the first temperature threshold, the engine speed is reduced to the first speed.
4. The method as described in claim 3, characterized in that, The step of reducing the engine speed to the first speed when the temperature of the target vehicle reaches the first temperature threshold includes: If the temperature of the target vehicle does not reach the first temperature threshold, obtain the first duration for which the engine continues to run at the second speed; Determine whether the first duration has reached the first duration threshold; If the first duration reaches the first duration threshold, the engine speed is reduced to the first speed; The second duration during which the engine continuously operates at the first speed is obtained; Determine whether the second duration has reached the second duration threshold; If the second duration reaches the second duration threshold, the engine speed is increased to the second speed; Returning to the previous step, if the temperature of the target vehicle has not reached the first temperature threshold, the engine is continuously running at the second speed for a first duration until the temperature of the target vehicle reaches the first temperature threshold, at which point the engine speed is reduced to the first speed.
5. The method as described in claim 3 or 4, characterized in that, The first temperature threshold is the sum of the standard temperature required by the target vehicle and the preset temperature difference, and the preset temperature difference is positively correlated with the amount of power to be replenished in the battery.
6. The method as described in claim 1, characterized in that, The target scenario is a scenario where the engine is not started and the target vehicle needs to charge its battery. The step of increasing the engine speed of the target vehicle according to the target strategy to generate waste heat and raise the temperature of the target vehicle based on this waste heat includes: The engine is started and its speed is increased to a third speed so that the engine generates waste heat and the battery temperature is increased based on the waste heat.
7. The method as described in claim 1, characterized in that, The target scenario is a situation where the engine is not started while the vehicle is parked and needs to be preheated. The step of increasing the engine speed of the target vehicle according to the target strategy to generate residual heat and raise the temperature of the target vehicle based on this residual heat includes: Obtain the target indicators of the target vehicle, including temperature and / or battery state of charge (SOC); Determine whether the target indicator is lower than the target threshold corresponding to the target indicator; If the target indicator is lower than the target threshold, the engine is started and the engine speed is increased to a fourth speed so that the engine generates waste heat and the temperature of the whole vehicle is increased based on the waste heat.
8. A heating device, characterized in that, The device includes: The acquisition module is used to acquire the target scene where the target vehicle is located when the electric heater PTC of the target vehicle is started. The determination module is used to determine the target strategy corresponding to the target scenario based on the preset correspondence between scenarios and strategies; A speed control module is used to increase the engine speed of the target vehicle according to the target strategy, so as to generate waste heat from the engine and increase the temperature of the target vehicle based on the waste heat. A switch control module is used to turn off the PTC when the temperature of the target vehicle reaches the target temperature threshold. The target scenario includes the engine not starting; The device further includes: The second determining module is used to determine a target mode in response to the user's input of the vehicle's energy mode; wherein the target mode includes a default mode and an energy-saving mode; The first control module is used to control the engine to operate according to a conventional strategy when the target mode is the default mode; The second control module is used to control the engine operation according to the target strategy when the target mode is the energy-saving mode.
9. An electronic device, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the heating method as described in any one of claims 1-7.
10. A computer storage medium, characterized in that, The computer storage medium stores computer program instructions, which, when executed by a processor, implement the heating method as described in any one of claims 1-7.
11. A vehicle, characterized in that, The vehicle includes at least one of the following: The heating device as described in claim 8; The electronic device as described in claim 9; The computer storage medium as described in claim 10.