A vehicle-mounted wireless charging linkage control method and device, medium and vehicle

Abstract

The present application belongs to the technical field of vehicle-mounted wireless charging, and provides a vehicle-mounted wireless charging linkage control method, device, medium and vehicle. The vehicle-mounted wireless charging linkage control method comprises obtaining a real-time driving speed of the vehicle, a real-time temperature and a required power of the wireless charging device; when the required power of the wireless charging device is non-zero, the real-time temperature of the wireless charging device is greater than a first temperature threshold and less than a second temperature threshold, the startup of a self-provided heat dissipation element of the wireless charging device is linkage controlled; according to the relationship between the required power and the running duty cycle of the self-provided heat dissipation element of the wireless charging device, the current running duty cycle of the self-provided heat dissipation element of the wireless charging device is determined; according to the relationship between the running duty cycle of the self-provided heat dissipation element of the wireless charging device and the best driving speed section of the vehicle, the best driving speed section of the vehicle is determined, and compared with the real-time driving speed of the vehicle, so as to dynamically adjust the running speed of the vehicle.

Description

Technical Field

[0001] This invention belongs to the field of vehicle-mounted wireless charging technology, and particularly relates to a vehicle-mounted wireless charging linkage control method, device, medium, and vehicle. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Currently, most systems use an aluminum metal base and passively dissipate heat through heat conduction via fins. This method involves directly transferring heat from the device to a cooler object in contact with it. However, this is highly susceptible to environmental factors; when the ambient temperature is high, effective heat conduction becomes impossible, making it a passive cooling method.

[0004] Existing in-vehicle wireless charger cooling technologies, while actively cooling the charger by judging its real-time temperature, have limitations. As the charging efficiency and power of the wireless charging device increase, more heat is generated, requiring higher operating power from the cooling equipment. This generates noise, which, combined with the noise generated during vehicle operation, affects passenger comfort. Summary of the Invention

[0005] In order to solve the technical problems existing in the background art, the present invention provides a vehicle-mounted wireless charging linkage control method, device, medium and vehicle, which can balance the wireless charging efficiency and the noise generated during the charging process and vehicle operation, thereby improving the wireless charging efficiency and the comfort of passengers riding in the vehicle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of the present invention provides a method for linkage control of in-vehicle wireless charging.

[0008] A method for controlling wireless charging in a vehicle, comprising:

[0009] Obtain the vehicle's real-time speed, the wireless charging device's real-time temperature, and the required power.

[0010] When the power demand of the wireless charging device is non-zero, and the real-time temperature of the wireless charging device is greater than the first temperature threshold and less than the second temperature threshold, the built-in heat dissipation element of the wireless charging device is activated in a linkage control.

[0011] Based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device, the current operating duty cycle of the built-in heat dissipation element of the wireless charging device is determined.

[0012] Based on the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, the optimal driving speed range of the vehicle is determined and compared with the real-time driving speed of the vehicle to dynamically adjust the vehicle's operating speed.

[0013] As one implementation method, the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device is characterized by a first piecewise function.

[0014] As one implementation method, the required power is pre-divided into several tiers, with each tier corresponding to a duty cycle of the wireless charging device's built-in heat dissipation element.

[0015] As one implementation method, when the power demand is at the lowest tier level, the built-in heat dissipation element of the wireless charging device operates at a preset minimum duty cycle and stops after a set time period.

[0016] As one implementation method, the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle is characterized by a second piecewise function.

[0017] As one implementation method, the higher the duty cycle of the built-in heat dissipation element of the wireless charging device, the higher the value of the optimal driving speed range of the vehicle.

[0018] As one implementation method, the vehicle-mounted wireless charging linkage control method further includes: acquiring the real-time temperature inside the vehicle cabin; and when the real-time temperature inside the vehicle cabin is greater than a third temperature threshold, linking the control to turn on the vehicle air conditioning for cooling.

[0019] A second aspect of the present invention provides an in-vehicle wireless charging linkage control device.

[0020] A vehicle-mounted wireless charging linkage control device, comprising:

[0021] The data acquisition module is used to acquire the vehicle's real-time driving speed, the real-time temperature of the wireless charging device, and the required power.

[0022] The built-in heat dissipation element start-up control module is used to control the start-up of the built-in heat dissipation element of the wireless charging device when the power demand of the wireless charging device is non-zero and the real-time temperature of the wireless charging device is greater than the first temperature threshold and less than the second temperature threshold.

[0023] The duty cycle determination module is used to determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device.

[0024] The vehicle speed adjustment module is used to determine the optimal driving speed range of the vehicle based on the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, and compare it with the real-time driving speed of the vehicle to dynamically adjust the vehicle speed.

[0025] A third aspect of the present invention provides a computer-readable storage medium.

[0026] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the vehicle-mounted wireless charging linkage control method described above.

[0027] A fourth aspect of the present invention provides a vehicle.

[0028] A vehicle comprising an on-board wireless charging linkage control device as described above.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] When the power demand of the wireless charging device is non-zero, this invention activates the built-in heat dissipation element of the wireless charging device by comparing its real-time temperature with a preset threshold range, thereby achieving active heat dissipation. Furthermore, to balance charging efficiency and passenger comfort, this invention utilizes the relationship between the power demand and the operating duty cycle of the built-in heat dissipation element, as well as the relationship between the operating duty cycle of the built-in heat dissipation element and the optimal vehicle speed range. This determines the current operating duty cycle of the built-in heat dissipation element and the corresponding optimal vehicle speed range. By determining the matching duty cycle of the heat dissipation element and dynamically adjusting the vehicle speed, overall vehicle noise is reduced, and passenger comfort is improved.

[0031] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0033] Figure 1 This is a flowchart of the vehicle-mounted wireless charging linkage control method according to an embodiment of the present invention;

[0034] Figure 2 This is an overall block diagram of the vehicle-mounted wireless charging system according to an embodiment of the present invention;

[0035] Figure 3This is a diagram showing the relationship between the charger rate and the cooling fan duty cycle control in an embodiment of the present invention.

[0036] Figure 4 This is a diagram showing the correspondence between vehicle speed segments and fan duty cycle in an embodiment of the present invention. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] Terminology Explanation:

[0041] CWC, Cellphone Wireless Charger, is a wireless charging module for mobile phones.

[0042] ESP, Electronic Stability Program ngine Management System.

[0043] DMC, Infotainment Domain Controller.

[0044] CLM, Climate Module, Air Conditioning Control Unit.

[0045] Figure 2 An overall block diagram of an in-vehicle wireless charging system according to an embodiment of the present invention is provided. Figure 2 In this module, the CWC (Wireless Charging Module) senses the phone through its internal phone detection mechanism when the operating conditions are met. It then sends the phone's charging status back via a CAN signal.

[0046] The CWC (Wireless Charging Module) receives the vehicle speed signal sent by the ESP node on the CAN network. After receiving the vehicle speed signal, the CWC uses its internal vehicle speed segmentation strategy to dynamically compensate for fan power.

[0047] When the DMC (Infotainment Controller) receives the charging status signal sent by the CWC, it synchronously combines other status signals of the whole vehicle, such as the ambient outside temperature signal and the room temperature signal sent by the CLM, to determine the scenario mode. When it is determined that the CWC mobile phone fast cooling mode is satisfied, the DMC (Infotainment Controller) sends the CWC mobile phone fast cooling mode signal through the CAN network.

[0048] The DMC (Domain Controller) will perform some special linkage modes based on the whole vehicle. For example, in the air purification mode, it will close the windows and turn on the air conditioner to start the internal circulation. For example, the fast cooling mode we currently envision. When the air conditioning control unit detects that the temperature inside the vehicle is very high and fast cooling is required, it sends a request for the fast cooling mode through the CAN signal. After receiving the signal, the DMC triggers the whole vehicle associated mode signal, such as closing the vehicle doors and windows. At the same time, the air conditioner triggers the fast cooling refrigeration mode, turns on the compressor, sets the fan speed to the maximum, and the temperature to the lowest to achieve the purpose of reducing the ambient temperature.

[0049] The DMC (Infotainment Controller) needs to承接整车的功能定义,提前将手机快速降温模式联动的功能状态变化约定好。示例:手机快速降温模式联动是,空调状态调整为全冷、风量5档以上、吹面模式。与CLM (Air Conditioning Control Unit) to undertake the functional definition of the whole vehicle and agree in advance on the changes in the functional status of the mobile phone fast cooling mode linkage. Example: The mobile phone fast cooling mode linkage is that the air conditioner status is adjusted to full cold, the air volume is above 5 gears, and the blowing mode is face blowing.

[0050] To achieve a better cooling effect, it is recommended to synchronously cooperate in the following aspects in the overall vehicle layout plan of the CWC (Mobile Wireless Charging Pad).

[0051] A Recommended layout position: It is recommended to be arranged at the landing point of the air flow direction of the whole vehicle air conditioner outlet in the face blowing mode to ensure that in the case of the air conditioner's summer cooling and refrigeration mode, the cold air of the air conditioner can be used to带走手机的热量。经数据调查验证,目前市面上的手机均有电池保护机制。当手机温度上升到阈值范围内是,手机端会降低充电的功率(一般做法为切换到涓流充电模式,相当于手机电量99%时的状态)。带走 the heat of the mobile phone. Through data investigation and verification, all mobile phones on the market currently have a battery protection mechanism. When the temperature of the mobile phone rises to the threshold range, the mobile phone will reduce the charging power (the general method is to switch to the trickle charging mode, which is equivalent to the state when the mobile phone battery is 99%).

[0052] B Non-recommended position: The position that cannot be blown by the air conditioner outlet in the central control area, which cannot form an effective air convection area.

[0053] In the specific implementation process, during the layout of the whole vehicle factory and the data design stage of the mobile phone charging module, carry out CFD simulation analysis in cooperation and adjust to the appropriate state.

[0054] Embodiment 1

[0055] 如 Figure 1 所示,本实施例提供了一种车载无线充电联动控制方法,其包括: as shown, this embodiment provides a vehicle-mounted wireless charging linkage control method, which includes:

[0056] Step 1: Obtain the vehicle's real-time speed, the wireless charging device's real-time temperature, and the required power.

[0057] Step 2: When the power demand of the wireless charging device is non-zero, and the real-time temperature of the wireless charging device is greater than the first temperature threshold (e.g., 35℃) and less than the second temperature threshold (e.g., 65℃), the built-in heat dissipation component (e.g., fan) of the wireless charging device is activated in conjunction with the control.

[0058] For example, in summer (sunny days, outside temperature above 35℃, car drying in a parking lot), the interior surface temperature is high; historical data shows that the interior surface temperature easily exceeds 70℃. According to the wireless charger's thermal protection strategy, when the sensor used by the charger to monitor the surface temperature detects a temperature ≥65℃, the charger enters the thermal protection mechanism and stops charging.

[0059] Step 3: Determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element.

[0060] In the specific implementation process, the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device is characterized by the first piecewise function.

[0061] Specifically, the required power is pre-divided into several tiers, and each tier corresponds to a duty cycle of the wireless charging device's built-in heat dissipation element.

[0062] When the power demand is at the lowest level, the built-in heat dissipation element of the wireless charging device operates at the preset minimum duty cycle and stops after a set time period.

[0063] Wireless charging matches the fan speed to the power demand after a successful handshake with the phone's protocol. The power hierarchy and duty cycle correspondence are shown in the attached diagram. Figure 3 And Table 2.

[0064] Duty cycle refers to the proportion of energized time relative to the total time within a pulse cycle. In practice, the fan speed can be adjusted by changing the corresponding output voltage.

[0065] Table 2 Relationship between power demand and duty cycle

[0066] Serial Number power Duty cycle Remark 1 ≥30W 70％ 2 ≥20W 66％ 3 ≥10W 63％ 4 ≥6W 60％ 5 ＜6W 55％ Stop running after 10 minutes

[0067] Step 4: Based on the relationship between the duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, determine the optimal driving speed range of the vehicle and compare it with the real-time driving speed of the vehicle to dynamically adjust the vehicle's operating speed.

[0068] In practice, the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle is characterized by the second piecewise function.

[0069] The higher the duty cycle of the built-in heat dissipation component of the wireless charging device, the higher the value of the optimal driving speed range for the vehicle.

[0070] The background noise (NVH) performance of a vehicle varies depending on its speed. This is determined by collecting the vehicle speed signal transmitted from the EMS on the vehicle's CAN network and segmenting the signal.

[0071] In this embodiment, the optimal vehicle speed range is tentatively divided into four levels, with different fan power corresponding to different speed levels. For example:

[0072] Speed ​​signal:

[0073] L1: 0-10 km / h;

[0074] L2: 10-40 km / h;

[0075] L3: 40-80M / h;

[0076] L4: 80 km / h and above.

[0077] It should be noted that in other embodiments, the optimal driving speed range of the vehicle may also be divided into other number of levels, which will not be described in detail here.

[0078] After collecting and calibrating real-vehicle data, dynamic adjustments were made to achieve both the efficiency required for mobile phone charging and the NVH (noise, vibration, and harshness) evaluation indicators defined in the design.

[0079] The relationship between the vehicle's optimal driving speed range and the fan duty cycle is shown in the figure. Figure 4 And Table 3.

[0080] Table 3 Relationship between optimal vehicle speed range and fan duty cycle

[0081]

[0082] In the specific implementation process, the requirement for the vehicle speed to increase slowly is: to increase slowly at a rate of 5% / 0.5s.

[0083] The requirements for slow vehicle speed reduction are as follows: slow down to the next speed level at a rate of 5% / 0.5s, and work for 3 minutes (calibrated value); if it is determined that the speed has not dropped to the target speed level, slow down to the next speed level again at a rate of 5% / 0.5s, and work for 2 minutes (calibrated value); if it is determined that the speed has still not dropped to the target speed level, slow down to the next speed level again at a rate of 5% / 0.5s, and continue working until the target speed level is reached.

[0084] In this embodiment, when the power demand of the wireless charging device is non-zero, the built-in heat dissipation element of the wireless charging device is activated by comparing the real-time temperature of the wireless charging device with a preset threshold range, thereby achieving active heat dissipation of the wireless charging device. Moreover, in order to balance the charging efficiency of the wireless charging device and passenger comfort, this embodiment uses the relationship between the power demand and the operating duty cycle of the built-in heat dissipation element of the wireless charging device, as well as the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, to determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle that matches it. By determining the operating duty cycle of the matching heat dissipation element and dynamically adjusting the vehicle's driving speed, the overall vehicle noise is reduced and the passenger comfort is improved.

[0085] In one or more embodiments, the vehicle-mounted wireless charging linkage control method further includes: acquiring the real-time temperature inside the vehicle cabin; and when the real-time temperature inside the vehicle cabin is greater than a third temperature threshold, linkage control to turn on the vehicle air conditioning for cooling.

[0086] Example 2

[0087] This embodiment provides an in-vehicle wireless charging linkage control device, which includes:

[0088] The data acquisition module is used to acquire the vehicle's real-time driving speed, the real-time temperature of the wireless charging device, and the required power.

[0089] The built-in heat dissipation element start-up control module is used to control the start-up of the built-in heat dissipation element of the wireless charging device when the power demand of the wireless charging device is non-zero and the real-time temperature of the wireless charging device is greater than the first temperature threshold and less than the second temperature threshold.

[0090] The duty cycle determination module is used to determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device.

[0091] The vehicle speed adjustment module is used to determine the optimal driving speed range of the vehicle based on the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, and compare it with the real-time driving speed of the vehicle to dynamically adjust the vehicle speed.

[0092] It should be noted that each module in this embodiment corresponds one-to-one with each step in Embodiment 1, and their specific implementation processes are the same, so they will not be repeated here.

[0093] In this embodiment, when the power demand of the wireless charging device is non-zero, the built-in heat dissipation element of the wireless charging device is activated by comparing the real-time temperature of the wireless charging device with a preset threshold range, thereby achieving active heat dissipation of the wireless charging device. Moreover, in order to balance the charging efficiency of the wireless charging device and passenger comfort, this embodiment uses the relationship between the power demand and the operating duty cycle of the built-in heat dissipation element of the wireless charging device, as well as the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, to determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle that matches it. By determining the operating duty cycle of the matching heat dissipation element and dynamically adjusting the vehicle's driving speed, the overall vehicle noise is reduced and the passenger comfort is improved.

[0094] Example 3

[0095] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the vehicle-mounted wireless charging linkage control method described in Embodiment 1 above.

[0096] Example 4

[0097] This embodiment provides a vehicle that includes the in-vehicle wireless charging linkage control device as described in Embodiment 1 above.

[0098] It should be noted that, apart from the on-board wireless charging linkage control device, the other structures of the vehicle in this embodiment are existing structures and will not be described in detail here.

[0099] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, as well as combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0100] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for linkage control of in-vehicle wireless charging, characterized in that, include: Obtain the vehicle's real-time speed, the wireless charging device's real-time temperature, and the required power. When the power demand of the wireless charging device is non-zero, and the real-time temperature of the wireless charging device is greater than the first temperature threshold and less than the second temperature threshold, the built-in heat dissipation element of the wireless charging device is activated in a linkage control. Based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device, the current operating duty cycle of the built-in heat dissipation element of the wireless charging device is determined. The relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device is characterized by the first piecewise function. Based on the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, the optimal driving speed range of the vehicle is determined and compared with the real-time driving speed of the vehicle to dynamically adjust the vehicle's operating speed. The relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle is characterized by the second piecewise function.

2. The vehicle-mounted wireless charging linkage control method as described in claim 1, characterized in that, The required power is pre-divided into several tiers, and each tier corresponds to a duty cycle of the wireless charging device's built-in heat dissipation element.

3. The vehicle-mounted wireless charging linkage control method as described in claim 2, characterized in that, When the power demand is at the lowest level, the built-in heat dissipation element of the wireless charging device operates at the preset minimum duty cycle and stops after a set time period.

4. The vehicle-mounted wireless charging linkage control method as described in claim 1, characterized in that, The higher the duty cycle of the built-in heat dissipation component of the wireless charging device, the greater the value of the optimal driving speed range for the vehicle.

5. The vehicle-mounted wireless charging linkage control method as described in claim 1, characterized in that, The in-vehicle wireless charging linkage control method further includes: acquiring the real-time temperature inside the vehicle cabin; and when the real-time temperature inside the vehicle cabin is greater than a third temperature threshold, linking the control to turn on the vehicle air conditioning for cooling.

6. A vehicle-mounted wireless charging linkage control device, characterized in that, include: The data acquisition module is used to acquire the vehicle's real-time driving speed, the real-time temperature of the wireless charging device, and the required power. The built-in heat dissipation element start-up control module is used to control the start-up of the built-in heat dissipation element of the wireless charging device when the power demand of the wireless charging device is non-zero and the real-time temperature of the wireless charging device is greater than the first temperature threshold and less than the second temperature threshold. The duty cycle determination module is used to determine the current operating duty cycle of the built-in heat dissipation element of the wireless charging device based on the relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device. The relationship between the required power and the operating duty cycle of the built-in heat dissipation element of the wireless charging device is characterized by the first piecewise function. The vehicle speed adjustment module is used to determine the optimal driving speed range of the vehicle based on the relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle, and compare it with the real-time driving speed of the vehicle to dynamically adjust the vehicle speed. The relationship between the operating duty cycle of the built-in heat dissipation element of the wireless charging device and the optimal driving speed range of the vehicle is characterized by a second piecewise function.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the vehicle wireless charging linkage control method as described in any one of claims 1-5.

8. A vehicle, characterized in that, Includes the vehicle-mounted wireless charging linkage control device as described in claim 6.

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