Heating method, device, equipment, medium and vehicle

Abstract

The invention discloses a heating method, device and equipment, a medium and a vehicle, and belongs to the technical field of vehicle control. The method comprises the steps that under the condition that an electric heater PTC of a target vehicle is started, a target scene where the target vehicle is located is obtained; determining a target strategy corresponding to the target scene according to a preset corresponding relationship between the scene and the strategy; the rotating speed of an engine of the target vehicle is increased according to the target strategy, so that the engine generates waste heat, and the temperature of the target vehicle is increased based on the waste heat; and turning off the PTC when the temperature of the target vehicle reaches the target temperature threshold. By the adoption of the heating method, device and equipment, the medium and the vehicle, under the condition that the PCT is started, waste heat generated by the engine can be increased by increasing the rotating speed of the engine, the temperature of the target vehicle can reach the target temperature threshold value faster, and therefore the PTC can be shut down as soon as possible, and energy consumption of the PTC is reduced.

Description

Technical Field

[0001] The present application belongs to the field of vehicle control technology, and in particular, relates to a heating method, device, equipment, medium and vehicle. Background Art

[0002] Currently, hybrid vehicles are usually heated by a combination of electric heater (Positive Temperature Coefficient, PTC) heating and engine waste heat.

[0003] Usually, due to subjective restrictions such as noise, vibration, harshness (NVH), fuel consumption, etc., the engine speed is limited, which will lead to insufficient waste heat generated by the engine, and PTC is turned on for heating. However, compared with engine waste heat, PTC heating consumes more energy. Summary of the invention

[0004] The embodiments of the present application provide a heating method, device, equipment, medium and vehicle, which can at least solve the problem in the prior art of wasting battery power, which may cause the vehicle to be unable to reach the destination.

[0005] In a first aspect, an embodiment of the present application provides a heating method, the method comprising:

[0006] When the electric heater PTC of the target vehicle is started, obtaining the target scene where the target vehicle is located;

[0007] According to the correspondence between the preset scenarios and strategies, determine the target strategy corresponding to the target scenario;

[0008] Increasing the speed of the engine of the target vehicle according to the target strategy so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat;

[0009] In a case where the temperature of the target vehicle reaches a target temperature threshold, the PTC is turned off.

[0010] In a second aspect, an embodiment of the present application provides a heating device, the device comprising:

[0011] An acquisition module, used for acquiring a target scene in which the target vehicle is located when the electric heater PTC of the target vehicle is started;

[0012] A determination module, used to determine a target strategy corresponding to a target scenario according to a preset correspondence between scenarios and strategies;

[0013] A speed control module, used to increase the speed of the engine of the target vehicle according to the target strategy, so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat;

[0014] The switch control module is used to turn off the PTC when the temperature of the target vehicle reaches a target temperature threshold.

[0015] In a third aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor and a memory storing computer program instructions;

[0016] When the processor executes the computer program instructions, the heating method as shown in any one of the embodiments of the first aspect is implemented.

[0017] In a fourth aspect, an embodiment of the present application provides a computer storage medium having computer program instructions stored thereon, and when the computer program instructions are executed by a processor, the heating method shown in any one of the embodiments of the first aspect is implemented.

[0018] In a fifth aspect, an embodiment of the present application further provides a vehicle, the vehicle comprising at least one of the following:

[0019] The heating device according to the second aspect;

[0020] The electronic device according to the third aspect;

[0021] The computer storage medium as described in the fourth aspect.

[0022] The heating method, device, equipment, medium and vehicle of the embodiment of the present application can obtain the target scene of the target vehicle when the PTC of the target vehicle is activated, and determine the target strategy corresponding to the target scene according to the correspondence between the preset scene and the strategy, and then increase the speed of the engine of the target vehicle according to the target strategy, so that the engine generates waste heat and increases the temperature of the target vehicle based on the waste heat, and turns off the PTC when the temperature of the target vehicle reaches the target temperature threshold. In this way, when the PCT is activated, 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 faster, so that the PTC can be turned off as soon as possible, reducing the energy consumption of the PTC.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1is a flow chart of a heating method provided by an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of an engine outlet water temperature provided by an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of an NVH value provided by an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of a battery heating power provided by an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of a battery temperature rise curve provided by an embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of vehicle heating power consumption provided by an embodiment of the present application;

[0031] Figure 7 is a schematic diagram of another battery temperature rise curve provided by an embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of a heating device provided by an embodiment of the present application;

[0033] Fig. 9 It is a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0036] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] As mentioned in the background technology, as pure electric vehicles become more and more popular in the market, the problem of high air-conditioning energy consumption at low temperatures has been increasingly criticized, and the industry has also developed various hardware and functional solutions to solve and optimize this problem.

[0038] In winter, since the engine of traditional fuel vehicles is in long-term working state, the cooling water temperature of the engine can be used to heat the entire vehicle space. There is no need to use other heating elements to consume energy for heating. The energy consumption of fuel vehicles will not change drastically in winter.

[0039] However, current hybrid vehicles basically use a combination of PTC heating and recovery of engine waste heat, motor waste heat, battery waste heat, etc. to heat the passenger compartment and battery.

[0040] However, in different scenarios, whether the engine is started or not, the workload is different, the waste heat that can be generated is also different, and the corresponding PTC heating scenarios are also different. The energy consumption of PTC is very large compared to the free engine waste heat.

[0041] Based on this, the embodiments of the present application provide a heating method, device, equipment, medium and vehicle, which can obtain the target scene of the target vehicle when the PTC of the target vehicle is activated, and determine the target strategy corresponding to the target scene according to the correspondence between the preset scene and the strategy, and then increase the speed of the engine of the target vehicle according to the target strategy, so that the engine generates waste heat and increases the temperature of the target vehicle based on the waste heat, and turns off the PTC when the temperature of the target vehicle reaches the target temperature threshold. In this way, when the PCT is activated, 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 faster, so that the PTC can be turned off as soon as possible to reduce the energy consumption of the PTC.

[0042] A heating method provided in an embodiment of the present application is described in detail below.

[0043] Figure 1 A schematic flow chart of a heating method provided by an embodiment of the present application is shown. It should be noted that the execution subject of the heating method may be a heating device. It should be noted that the above execution subject does not constitute a limitation on the present 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, obtaining a target scene where the target vehicle is located;

[0046] S120, determining a target strategy corresponding to the target scenario according to a preset correspondence relationship between the scenario and the strategy;

[0047] S130, increasing the speed of the engine of the target vehicle according to the target strategy, so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat;

[0048] S140: When the temperature of the target vehicle reaches a target temperature threshold, turn off the PTC.

[0049] Thus, when the PTC of the target vehicle is activated, the target scene of the target vehicle can be obtained, and according to the correspondence between the preset scene and the strategy, the target strategy corresponding to the target scene can be determined, and then the engine speed of the target vehicle can be increased according to the target strategy, so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat, and the PTC is turned off when the temperature of the target vehicle reaches the target temperature threshold. In this way, when the PCT is activated, 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 faster, so that the PTC can be turned off as soon as possible, reducing the energy consumption of the PTC.

[0050] In S110, the target vehicle may be a hybrid vehicle. In a low temperature scenario, if the residual heat generated by the engine is insufficient, the PTC will be activated to heat the target vehicle. If the PTC of the target vehicle is activated, the target scenario of the target vehicle can be obtained.

[0051] Here, the low-temperature usage scenarios of hybrid vehicles can be divided in advance, and the engine waste heat recovery conditions in each scenario and whether the PTC needs to be started can be marked, as shown in Table 1.

[0052] Table 1- Low temperature scenario table

[0053] serial number Scenario Engine waste heat recovery PTC 1 Low temperature charging none need 2 Pure electric mode none need 3 Discharge outside the vehicle none need 4 Low temperature hybrid driving powerful unnecessary 5 Low temperature on-site power replenishment weak need 6 Low temperature charging preheating weak need 7 Low battery remote air conditioning warm up weak need

[0054] As can be seen from Table 1, in scenarios 1-3, the engine does not meet the starting conditions, so the temperature of the target vehicle cannot be increased based on the residual heat generated by the engine. Scenario 4 is the driving state with the engine started, and the residual heat of the engine is sufficient to directly meet the thermal demand of the entire vehicle.

[0055] In scenarios 5-7, the target vehicle requires sufficient heat. However, under current circumstances, due to subjective restrictions such as NVH and fuel consumption, the engine power and speed are restricted, resulting in insufficient waste 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 waste heat is insufficient, and the PTC will be activated for heating to meet the heat demand of the target vehicle.

[0056] The target scenario may be one of scenarios 5 to 7. Specifically, the target scenario may be one of: a scenario in which the engine is running at a first speed in a parked state to charge the battery of the target vehicle; a scenario in which the engine is not started and the target vehicle needs to charge the battery; a scenario in which the engine is not started in a parked state and the target vehicle needs to be preheated.

[0057] In S120, different scenarios may correspond to different strategies, and the strategy may be a strategy for increasing the engine speed of the target vehicle, and the correspondence between different scenarios and strategies may be preset. After determining the target scenario, the target strategy corresponding to the target scenario may be determined according to the correspondence between the preset scenario and strategy.

[0058] In S130, the waste heat may be the heat generated by the engine. When the engine is started, the engine water circuit is connected to the vehicle water circuit through a control valve, and the waste heat generated by the engine can be transferred to various parts, thereby heating the target vehicle based on the waste heat generated by the engine and raising the temperature of the target vehicle. The vehicle water circuit may include the passenger compartment, power battery, motor, and engine.

[0059] Normally, due to the limitations of factors such as NVH and fuel consumption, the engine speed is usually limited to a certain range. Therefore, the waste heat generated by the engine may not be able to meet the heat demand of the target vehicle, and the PTC is activated for heating. In this case, based on the heating method provided in the embodiment of the present application, in order to reduce the energy consumption of PTC, the requirements in terms of NVH and fuel consumption can be appropriately reduced, and 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 embodiments, the target scenario may be a scenario in which the engine is running at a first speed in a parking state to charge the battery of the target vehicle, that is, a low-temperature on-site charging scenario. In order to reduce the PTC power consumption and increase the charging speed when the target vehicle is charged on-site at a low temperature, 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 entire vehicle is increased based on the waste heat.

[0062] Here, the first speed may be a preset speed corresponding to the low-temperature on-site charging scenario. Considering factors such as NVH and fuel consumption, the first speed is generally low. In order to avoid 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 the second speed, so that the engine generates more waste heat to increase the temperature of the vehicle. The second speed may be the speed corresponding to the optimal efficiency point allowed for the engine to work in a static state. The second speed may be greater than the first speed.

[0063] For example, if the target vehicle is parked, the engine is running at a speed R0 (i.e., the first speed) to charge the battery, and because the target vehicle is in a low temperature environment, the PTC heats the target vehicle with a power of P0. 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 recharging in situ at low temperatures, the engine can recharge the battery in a more efficient range, thereby increasing the recharging speed and reducing user waiting time. At the same time, waste heat is used to heat the target vehicle, reducing PTC's consumption of electricity.

[0065] In some implementations, in order to avoid excessively reducing the performance of NVH and fuel consumption, resulting in a poor user experience, after increasing the engine speed to the second speed, the method may further include:

[0066] Detecting whether the temperature of the target vehicle reaches a first temperature threshold;

[0067] When the temperature of the target vehicle reaches a first temperature threshold, the speed of the engine is reduced to a first speed.

[0068] Here, running the engine at the second speed will reduce performance in aspects such as NVH and fuel consumption. In order to avoid long-term low performance in aspects such as NVH and fuel consumption resulting in a poor user experience, and to avoid the risk of heat damage caused by excessive temperature of the target vehicle, after the engine speed is increased to the second speed, it is possible to detect whether the temperature of the target vehicle reaches the first temperature threshold. When the temperature of the target vehicle reaches the first temperature threshold, the engine speed is reduced to the first speed.

[0069] When the temperature of the target vehicle is lower than the target temperature threshold, the engine speed is increased to the second speed again.

[0070] In some embodiments, in order to avoid frequently triggering the engine to run at high speed, the first temperature threshold may be the sum of the standard temperature required by the target vehicle and the preset temperature difference. The standard temperature may be the engine outlet water temperature that can meet the heating load requirement of the target vehicle without turning on the PTC, and the preset temperature difference may be positively correlated with the amount of battery power to be replenished. Specifically, a correspondence table between the preset temperature difference and the amount of power to be replenished may be pre-set, and the current preset temperature difference may be determined based on the correspondence table and the current amount of power to be replenished.

[0071] Exemplarily, the first temperature threshold may be T1+ΔT0, where T1 may be a standard temperature and ΔT0 may be a preset temperature difference.

[0072] In this way, by making the first temperature threshold higher than the standard temperature required by the target vehicle, over-temperature heating can be achieved, that is, heating for a longer period of time, storing excess heat in the hot water of the water circuit, avoiding triggering the engine speed increase again in a short period of time, thereby balancing the time of low-speed and high-speed engine operation, and also balancing the time of high and low performance such as NVH and fuel consumption. Moreover, since the preset temperature difference is positively correlated with the battery's remaining power, the over-temperature amplitude can be dynamically adjusted to avoid wasting engine oil and overheating the battery after the power is fully charged.

[0073] Exemplarily, when the engine outlet water temperature is T1, the heating load demand of the target vehicle can be met without starting PTC, that is, the above-mentioned target temperature threshold and standard temperature can both be T1. If the target vehicle is parked in place, the engine is running at a speed of R0 to charge the battery, and because the target vehicle is in a low temperature environment, the PTC heats the target vehicle with a power of P0. In order to reduce the power consumption of PTC, the engine speed can be increased to R0+ΔR0 to heat the target vehicle. When the engine outlet water temperature reaches T1, the PTC can be turned off, but the engine still runs at a speed of R0+ΔR0. When the engine outlet water temperature reaches T1+ΔT0, the engine speed is reduced to R0. With the water heat cycle, the engine outlet water temperature will continue to drop. When the engine outlet water temperature is lower than T1, the engine speed will be increased to R0+ΔR0 again, and the above process will be repeated.

[0074] For example, when the target vehicle is in a low-temperature on-site charging scenario, the engine outlet water temperature corresponding to the heating method in the prior art (that is, the engine is always running at the first speed) and the heating method provided in the embodiment of the present application can be as follows: Figure 2 Among them, 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 the embodiment of the present application, and the thermal equilibrium water temperature can be the above-mentioned standard temperature or target temperature threshold.

[0075] When the target vehicle is in a low-temperature on-site charging scenario, the NVH values ​​corresponding to the heating method in the prior art (that is, the engine is always running at the first speed) and the heating method provided in the embodiment of the present application can be as follows: Figure 3 The first NVH value may be the NVH value corresponding to the heating method in the prior art, and the second NVH value may be the NVH value corresponding to the heating method provided in the embodiment of the present application.

[0076] In this way, by reducing the engine speed when the temperature of the target vehicle reaches the first temperature threshold, it is possible to avoid the problem of poor user experience caused by the engine being at a high speed for a long time, resulting in long-term low performance in terms of NVH and fuel consumption. It can also avoid the risk of heat damage caused by continuous high-power heating that causes the temperature of the target vehicle to be too high.

[0077] In some implementations, in order to further ensure user experience and avoid excessive reduction in performance in terms of NVH and fuel consumption, when the temperature of the target vehicle reaches the first temperature threshold, reducing the engine speed to the first speed may include:

[0078] When the temperature of the target vehicle does not reach the first temperature threshold, obtaining a first time duration for which the engine continues to run at the second speed;

[0079] Determine whether the first duration reaches a first duration threshold;

[0080] When the first time reaches a first time threshold, reducing the engine speed to a first speed;

[0081] Obtaining a second time duration during which the engine continues to run at the first speed;

[0082] Determine whether the second duration reaches a second duration threshold;

[0083] When the second time reaches a second time threshold, increasing the engine speed to a second speed;

[0084] Returning to the execution, when the temperature of the target vehicle does not reach the first temperature threshold, obtaining a first time duration for which the engine continues to run at the second speed, and reducing the engine speed to the first speed when the temperature of the target vehicle reaches the first temperature threshold.

[0085] Here, if the duration of the engine running at the second high speed reaches the first duration 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 then after a period of time (that is, the second duration threshold), the speed can be increased to the second speed for heating, and this cycle can be repeated until the temperature of the target vehicle reaches the first temperature threshold.

[0086] Among them, the first duration threshold and the second duration threshold can be set according to actual needs and are not limited here.

[0087] In this way, by intermittently reducing the engine speed, we can better avoid the problem of long-term poor performance in NVH and fuel consumption caused by long-term high-speed operation of the engine, thereby further improving the user experience and reducing the risk of heat damage.

[0088] In some embodiments, the target scenario may be a scenario where the engine is not started and the target vehicle needs to charge the battery, that is, a low-temperature charging preheating scenario. In order to reduce the PTC power consumption and increase the heating speed when the target vehicle is charging and preheating at a low temperature, S130 may include:

[0089] The engine is started and the speed of the engine is increased to a third speed, so that the engine generates waste heat and the temperature of the battery is increased based on the waste heat.

[0090] Here, if the battery state of charge (SOC) of the target vehicle is too low (lower than a preset threshold), the engine must be started to meet normal driving needs. Therefore, the engine can recharge the battery and generate enough waste heat to heat the battery. There is no need to start the PTC, so there is no need to reduce the PTC power consumption in this scenario.

[0091] If the SOC of the target vehicle is not lower than the preset threshold and can meet the driving needs, the engine start will not be triggered. At this time, if you need to go to the charging station to charge the battery of the target vehicle, you need to start the PTC to preheat the battery in order to increase the speed of charging the battery after arriving at the charging station. In this scenario, since the PTC is started, it will consume electrical energy, and the energy consumption of the PTC needs to be reduced. Specifically, the user can pre-set the target vehicle to a non-pure electric priority mode. In this mode, when the SOC of the target vehicle is not lower than the preset threshold, the engine will usually not be started. At this time, the target vehicle is in a low-temperature charging preheating scenario. When the target vehicle navigates to the charging station or is close to the charging station, it can be considered that the target vehicle needs to charge the battery, and the charging station can be a high-power charging station (High Power Charging, HPC).

[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 battery can be heated by the engine and PTC together. When thermal equilibrium is reached, the PTC can be turned off to maintain the engine running. While driving the target vehicle, the waste heat can continue to be used to heat the battery.

[0093] The third speed may be preset according to actual needs and is not limited here.

[0094] For example, when the target vehicle is in a low-temperature charging preheating scenario, the battery heating power corresponding to the heating method in the prior art (that is, the engine is not started and the PTC is used for heating) and the heating method provided in the embodiment of the present application can be as follows: Figure 4 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 the embodiment of the present application, and the target heating power may be the heating power required by the battery.

[0095] In the case where the target vehicle is in a low-temperature charging preheating scenario, the battery temperature rise curves corresponding to the heating method in the prior art (i.e., the engine is not started and heated by PTC) and the heating method provided in the embodiment of the present application can be as follows: Figure 5 The first temperature rise curve is a battery temperature rise curve corresponding to the heating method in the prior art, and the second temperature rise curve is a battery temperature rise curve corresponding to the heating method provided in the embodiment of the present application.

[0096] In this way, when the target vehicle is charging and preheating at low temperature, the engine can be started to allow the generator and PTC to heat the battery together, reducing PTC power consumption and increasing the heating speed.

[0097] In some embodiments, the target scenario may be a scenario where the engine is not started in a parking state and the target vehicle needs to be preheated, that is, a low-power remote air-conditioning warm-up scenario. In order to reduce the PTC power consumption and increase the heating speed when the target vehicle is warmed up by low-power remote air-conditioning, S130 may include:

[0098] Obtain target indicators of the target vehicle;

[0099] Determine whether the target indicator is lower than the target threshold corresponding to the target indicator;

[0100] When 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 entire vehicle is increased based on the waste heat.

[0101] Here, when the target vehicle receives a warm-up command while parked, if the target vehicle is in the state of plugging in the charging pile, the charging pile current can be used for heating, and the battery can also be additionally heated so that after the vehicle is unplugged, the residual heat of the battery can be used to heat the entire vehicle through the water circuit during use. In this scenario, since the charging pile current can be used for heating, there is no need to consider reducing the PTC power consumption.

[0102] When the target vehicle receives a warm-up command while parked, if the target vehicle is not plugged in for charging, it may be a low-battery remote air-conditioning warm-up scenario.

[0103] Specifically, the target index may include temperature and / or SOC. When the target vehicle is in a low-battery remote air-conditioning heating scenario, the temperature and / or SOC of the target vehicle may be obtained, and it may be determined whether the temperature of the target vehicle is lower than a second temperature threshold and / or whether the SOC of the target vehicle 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 may be started, and the engine speed may be increased from 0 to a fourth speed. The target vehicle may be heated by the engine and PTC together to meet the user's need for quick vehicle heating. When thermal equilibrium is reached, the PTC may be turned off.

[0104] Among them, the fourth 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 the case where the target vehicle is in a low-power remote air-conditioning heating scenario, the heating power consumption of the whole vehicle corresponding to the heating method in the prior art (i.e., heating only by PTC) and the heating method provided in the embodiment of the present application can be as follows: Figure 6 The first power consumption is the whole vehicle heating power consumption corresponding to the heating method in the prior art, and the second power consumption is the whole vehicle heating power consumption corresponding to the heating method provided in the embodiment of the present application.

[0106] In the case where the target vehicle is in a low-battery remote air-conditioning heating scenario, the battery temperature rise curves corresponding to the heating method in the prior art (i.e., heating only by PTC) and the heating method provided in the embodiment of the present application can be as follows: Figure 7 The third temperature rise curve is a battery temperature rise curve corresponding to the heating method in the prior art, the fourth temperature rise curve is a battery temperature rise curve corresponding to the heating method provided in the embodiment of the present application, and the target temperature is the temperature required by the battery.

[0107] In this way, when the target vehicle is low on power and is being heated by remote air conditioning, 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] In S140, when the temperature of the target vehicle reaches the target temperature threshold, the PTC can be turned off. Since the engine runs at a higher speed, more waste heat is generated, causing the target vehicle to heat up quickly, the PTC can be turned off as early as possible to reduce PTC energy consumption.

[0109] The temperature of the target vehicle may be an engine outlet water temperature. The target temperature threshold may be an engine outlet water temperature that can meet the heating load requirement of the target vehicle without turning on the PTC. The temperature of the target vehicle reaching the target temperature threshold may mean that the engine outlet water temperature can meet the heating load requirement of the target vehicle, in other words, it may mean that thermal balance is achieved. The target temperature threshold may be different in different scenarios.

[0110] In addition, in some embodiments, in order to make the heating control of the vehicle more in line with user needs, the method may further include:

[0111] In response to a user input on a vehicle energy mode, determining a target mode, which may be a default mode or an energy-saving mode;

[0112] When the target mode is the default mode, the engine operation is controlled according to the conventional strategy shown in Table 1;

[0113] When the target mode is the energy-saving mode, the engine operation is controlled according to the target strategy in the heating method provided in the embodiment of the present 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 the conventional engine waste heat recovery method that simply passes engine hot water into the vehicle heating circuit, the heating method provided in the embodiment of the present application actively controls the start, speed, and load of the engine, so that the engine not only responds to driving needs, but also responds to heating needs in special scenarios. It can optimize the strategy for scenarios where the vehicle heating demand is strong but the engine speed is limited (such as scenarios 5-7 in Table 1), so that it can dynamically meet the highly subjective user needs such as NVH and fuel consumption, while reducing the PTC usage scenarios and improving the engine's power generation efficiency, thereby saving the PTC's low-temperature heating energy consumption.

[0116] Based on the same inventive concept, the present application also provides a heating device, and the heating method provided in the present application can be performed by the heating device. Figure 8 The heating device provided in the embodiment of the present application is described in detail.

[0117] Figure 8 A schematic structural diagram of a heating device provided in one embodiment of the present application is shown.

[0118] like Figure 8 As shown, the heating device may include:

[0119] An acquisition module 801 is used to acquire a target scene where a target vehicle is located when the electric heater PTC of the target vehicle is started;

[0120] A determination module 802 is used to determine a target strategy corresponding to a target scenario according to a preset correspondence relationship between scenarios and strategies;

[0121] The speed control module 803 is used to increase the speed of the engine of the target vehicle according to the target strategy so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat;

[0122] The switch control module 804 is used to turn off the PTC when the temperature of the target vehicle reaches a target temperature threshold.

[0123] Thus, when the PTC of the target vehicle is activated, the target scene of the target vehicle can be obtained, and according to the correspondence between the preset scene and the strategy, the target strategy corresponding to the target scene can be determined, and then the engine speed of the target vehicle can be increased according to the target strategy, so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat, and the PTC is turned off when the temperature of the target vehicle reaches the target temperature threshold. In this way, when the PCT is activated, 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 faster, so that the PTC can be turned off as soon as possible, reducing the energy consumption of the PTC.

[0124] In some embodiments, the target scenario is a scenario where the engine is running at a first speed in a parking state to charge the battery of the target vehicle. In order to reduce the PTC power consumption and increase the charging speed when the target vehicle is charged in situ at low temperature, 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 increases the temperature of the entire vehicle based on the waste heat. The second speed is the speed corresponding to the best efficiency point allowed for the engine to operate under static conditions, and the second speed is greater than the first speed.

[0126] In some embodiments, in order to avoid excessively reducing the performance of NVH and fuel consumption, resulting in a poor user experience, the device may further include:

[0127] a detection submodule, for detecting whether the temperature of the target vehicle reaches a first temperature threshold after the engine speed is increased to a second speed;

[0128] The second speed control submodule is used to reduce the speed of the engine to a first speed when the temperature of the target vehicle reaches a first temperature threshold.

[0129] In some implementations, in order to further ensure user experience and avoid excessive reduction in performance in terms of NVH and fuel consumption, the second speed control submodule may include:

[0130] A first acquisition unit, configured to acquire a first time duration for which the engine continues to run at a second speed when the temperature of the target vehicle does not reach a first temperature threshold;

[0131] A first judging unit, configured to judge whether the first duration reaches a first duration threshold;

[0132] A first speed control unit, configured to reduce the speed of the engine to a first speed when the first time reaches a first time threshold;

[0133] A second acquisition unit, used to acquire a second time duration for which the engine continues to run at the first speed;

[0134] A second determination unit, configured to determine whether the second duration reaches a second duration threshold;

[0135] a second speed control unit, configured to increase the speed of the engine to a second speed when the second time reaches a second time threshold;

[0136] The iteration unit is used to return to execute, when the temperature of the target vehicle does not reach the first temperature threshold, obtaining a first time duration for the engine to continue running at the second speed, and reducing the engine speed to the first speed when the temperature of the target vehicle reaches the first temperature threshold.

[0137] In some embodiments, in order to avoid frequently triggering the engine to run at high speed, the first temperature threshold is the sum of the standard temperature required by the target vehicle and a preset temperature difference, and the preset temperature difference is positively correlated with the amount of battery power to be replenished.

[0138] In some embodiments, the target scenario is a scenario where the engine is not started and the target vehicle needs to charge the battery. In order to reduce the PTC power consumption and increase the heating speed when the target vehicle is preheated at low temperature, the speed control module 803 may include:

[0139] The third speed control submodule is used to start the engine and increase the speed of the engine to a third speed so that the engine generates waste heat and the temperature of the battery is increased based on the waste heat.

[0140] In some embodiments, the target scenario is a scenario where the engine is not started in a parking state and the target vehicle needs to be preheated. In order to reduce the PTC power consumption and increase the heating speed when the target vehicle is heated by remote air conditioning with low power, the speed control module 803 may include:

[0141] An acquisition submodule is used to acquire target indicators of a target vehicle, wherein the target indicators include temperature and / or battery state of charge SOC;

[0142] A judgment submodule is used to judge 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 a fourth speed when the target index is lower than the target threshold, so that the engine generates waste heat and the temperature of the whole vehicle is increased based on the waste heat.

[0144] Fig. 9 A schematic structural diagram of an electronic device provided by an embodiment of the present application is shown.

[0145] like Fig. 9 As shown, the electronic device 9 is a structural diagram of an exemplary hardware architecture of an electronic device that can implement the heating method and heating device in the embodiment of the present application. The electronic device can refer to the electronic device in the embodiment of the present 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), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0148] The memory 902 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 902 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 902 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 902 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 902 is a non-volatile solid-state memory. In a specific embodiment, the memory 902 may include a read-only memory (ROM), a random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Therefore, typically, the memory 902 includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) 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 the present application.

[0149] The processor 901 implements any one of the heating methods in the above embodiments by reading and executing computer program instructions stored in the memory 902 .

[0150] In one example, the electronic device may further include a communication interface 903 and a bus 904. Fig. 9 As shown, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 904 and communicate with each other.

[0151] The communication interface 903 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0152] Bus 904 includes hardware, software or both, and the parts of electronic equipment are coupled to each other.For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In suitable cases, bus 904 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0153] The electronic device can execute the heating method in the embodiment of the present application, thereby realizing the combination Figures 1 to 8 The heating method and device are described.

[0154] In addition, in combination with the heating method in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the heating methods in the above embodiment is implemented.

[0155] In addition, in combination with the heating method in the above embodiment, the embodiment of the present invention can provide a vehicle for implementation. The vehicle includes at least one of the heating device, electronic device and computer-readable storage medium in the above embodiment.

[0156] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0157] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in 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, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0158] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. 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 embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0159] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.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 can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0160] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A heating method, characterized in that: The method comprises: When the electric heater of the target vehicle is started, obtaining a target scene where the target vehicle is located; Determine a target strategy corresponding to the target scenario according to a preset correspondence relationship between the scenario and the strategy; Increasing the speed of the engine of the target vehicle according to the target strategy 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 a target temperature threshold, the electric heater is turned off.

2. The method according to claim 1, characterized in that The target scenario is a scenario in which the engine is running at a first speed to charge a battery of the target vehicle in a parking state, and increasing the speed of the engine of the target vehicle according to the target strategy so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat, including: The engine speed is increased to a second speed so that the engine generates waste heat and the temperature of the entire vehicle is increased based on the waste heat. The second speed is a speed corresponding to the best efficiency point allowed for the engine to operate in a static state, and the second speed is greater than the first speed.

3. The method according to claim 2, characterized in that After increasing the speed of the engine to the second speed, the method further includes: Detecting whether the temperature of the target vehicle reaches a first temperature threshold; When the temperature of the target vehicle reaches the first temperature threshold, the speed of the engine is reduced to the first speed.

4. The method according to claim 3, characterized in that When the temperature of the target vehicle reaches the first temperature threshold, reducing the speed of the engine to the first speed includes: When the temperature of the target vehicle does not reach the first temperature threshold, obtaining a first time duration for which the engine continues to run at the second speed; Determining whether the first duration reaches a first duration threshold; When the first duration reaches the first duration threshold, reducing the speed of the engine to the first speed; Acquire a second time duration during which the engine continues to run at the first speed; Determining whether the second duration reaches a second duration threshold; When the second time duration reaches the second time duration threshold, increasing the speed of the engine to the second speed; Return to executing the step of obtaining a first time duration for the engine to continue running at the second speed when the temperature of the target vehicle has not reached the first temperature threshold, and then reducing the speed of the engine to the first speed when the temperature of the target vehicle reaches the first temperature threshold.

5. The method according to claim 3 or 4, characterized in that The first temperature threshold is the sum of the standard temperature required by the target vehicle and a preset temperature difference, and the preset temperature difference is positively correlated with the amount of electricity to be replenished of the battery.

6. The method according to claim 1, characterized in that The target scenario is a scenario in which the engine is not started and the target vehicle needs to charge a battery, and increasing the speed of the engine of the target vehicle according to the target strategy so that the engine generates waste heat and increasing the temperature of the target vehicle based on the waste heat includes: The engine is started and the speed of the engine is increased to a third speed, so that the engine generates waste heat and the temperature of the battery is increased based on the waste heat.

7. The method according to claim 1, characterized in that The target scenario is a scenario in which the engine is not started in a parking state and the target vehicle needs to be preheated, and increasing the speed of the engine of the target vehicle according to the target strategy so that the engine generates waste heat and increasing the temperature of the target vehicle based on the waste heat includes: Acquire a target indicator of the target vehicle, wherein the target indicator includes temperature and / or battery state of charge (SOC); Determine whether the target indicator is lower than a target threshold corresponding to the target indicator; When the target indicator is lower than the target threshold, the engine is started and the speed of the engine is increased to a fourth speed, so that the engine generates waste heat and the temperature of the entire vehicle is increased based on the waste heat.

8. A heating device, characterized in that: The device comprises: An acquisition module, used for acquiring a target scene in which the target vehicle is located when the electric heater PTC of the target vehicle is started; A determination module, used to determine a target strategy corresponding to the target scenario according to a preset correspondence between scenarios and strategies; A speed control module, configured to increase the speed of the engine of the target vehicle according to the target strategy, so that the engine generates waste heat and the temperature of the target vehicle is increased based on the waste heat; The switch control module is used to turn off the PTC when the temperature of the target vehicle reaches a target temperature threshold.

9. An electronic device, characterized in that: The device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the heating method according to any one of claims 1 to 7 is implemented.

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 according to any one of claims 1 to 7.

11. A vehicle, characterized in that: The vehicle includes at least one of the following: The heating device according to any one of claim 8; The electronic device as claimed in claim 9; The computer storage medium of claim 10.

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