A charging and power distribution system assembly cooling fan control method, device and terminal

Abstract

The application discloses a kind of charging and power supply system assembly cooling fan control method, device and terminal, belong to the cooling system technical field of vehicle, include: the hardware maximum current and current body temperature of vehicle charger are obtained respectively and the rated current and current body temperature of power converter;According to the hardware maximum current of the vehicle charger, the working current of vehicle charger is executed to cooling fan control strategy;According to the rated current of the power converter, the working current of power converter is executed to cooling fan control strategy;According to the current body temperature of the vehicle charger and the current body temperature of power converter, the current body temperature is executed to cooling fan control strategy.The application judges whether to start or close cooling fan by detecting current and temperature, avoids the overheat risk of charging and power supply system assembly, ensures that the working temperature of charging and power supply system assembly will not be too high, to improve life and efficiency.

Description

Technical Field

[0001] This invention discloses a method, device, and terminal for controlling the cooling fan of a charging and distribution system assembly, belonging to the technical field of vehicle cooling systems. Background Technology

[0002] A0-class new energy vehicles mostly use air cooling for their high-voltage charging and distribution system assemblies – cooling fans. By accelerating the airflow around the high-voltage charging and distribution system assembly, the heat dissipated from inside the assembly is transferred to the outside of the vehicle through the air, keeping the high-voltage charging and distribution system assembly in a low-temperature environment and ensuring its service life and efficiency.

[0003] Cooling fans have advantages such as stable performance, high safety factor, low cost, easy installation, and low energy consumption. However, most current fan control methods rely on temperature detection to determine whether to turn on the fan. The disadvantage is that there is a risk that the temperature may be too high due to high current and cannot be detected in time. Overheating will affect operating efficiency, insulation, and even damage the charging and distribution system assembly, causing the whole vehicle to malfunction. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a method, device, and terminal for controlling the cooling fan of a charging and power distribution system assembly. This solves the problems of most current fan controls, which have the risk of failing to detect excessively high temperatures caused by large currents in a timely manner, and the effects of overheating on operating efficiency, insulation, and damage to the charging and power distribution system assembly, thereby causing the entire vehicle to malfunction.

[0005] The technical solution of the present invention is as follows:

[0006] According to a first aspect of the present invention, a method for controlling a cooling fan in a charging and distribution system assembly is provided, comprising:

[0007] Obtain the maximum hardware current and current body temperature of the on-board charger, and the rated current and current body temperature of the power converter, respectively.

[0008] The on-board charger operating current control strategy for the cooling fan is executed based on the maximum hardware current of the on-board charger.

[0009] The power converter operating current control strategy for the cooling fan is executed according to the rated current of the power converter.

[0010] The cooling fan control strategy is executed based on the current body temperature of the on-board charger and the current body temperature of the power converter.

[0011] Preferably, the step of executing the on-board charger operating current control strategy for the cooling fan based on the maximum hardware current of the on-board charger includes:

[0012] Based on the maximum hardware current of the on-board charger, the first OBC operating current threshold and the second OBC operating current threshold are determined according to formulas (1) and (2), respectively:

[0013] I s1 =I O *K1 (1)

[0014] I s2 =I O *K2 (2)

[0015] Among them, I O K1 is the maximum hardware current of the on-board charger, K2 is the first OBC operating current parameter, and K1 > K2. s1 I is the first OBC operating current threshold. s2 The second OBC operating current threshold;

[0016] Determine whether the maximum current of the on-board charger is greater than or equal to the first OBC operating current threshold:

[0017] Yes, turn on the fan until the maximum hardware current of the on-board charger is less than or equal to the second OBC operating current threshold, then turn off the fan.

[0018] No, execute the current body temperature-based cooling fan control strategy.

[0019] Preferably, the step of executing the power converter operating current control strategy for the cooling fan based on the rated current of the power converter includes:

[0020] The operating current threshold of the power converter is obtained from the rated current of the power converter using formula (3):

[0021] I set =l D *k4 (3)

[0022] Among them, l D k1 is the rated current of the power converter, and k2 is the operating current of the power converter.

[0023] Threshold, I set The operating current threshold of the power converter;

[0024] Determine whether the rated current of the power converter is greater than or equal to the operating current threshold of the power converter:

[0025] Yes, turn on the fan until the rated current of the power converter is less than the operating current threshold of the power converter, then turn off the fan.

[0026] No, execute the current body temperature-based cooling fan control strategy.

[0027] Preferably, the step of executing a cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter includes:

[0028] Based on the current body temperature of the on-board charger and the current body temperature of the power converter, determine whether at least one of them is ≥ a temperature threshold:

[0029] Yes, turn on the fan until the current body temperature of the on-board charger and the current body temperature of the power converter are both determined to be less than the temperature threshold, then turn off the fan.

[0030] No, maintain the current state and repeatedly obtain the on-board charger's maximum hardware current and current body temperature, as well as the power converter's rated current and current body temperature.

[0031] According to a second aspect of the present invention, a cooling fan control device for a charging and distribution system assembly is provided, comprising:

[0032] The acquisition module is used to acquire the maximum hardware current and current body temperature of the on-board charger, as well as the rated current and current body temperature of the power converter.

[0033] The first judgment strategy module is used to execute the on-board charger operating current control strategy for the cooling fan based on the maximum hardware current of the on-board charger.

[0034] The second judgment strategy module is used to execute the power converter operating current control strategy for the cooling fan according to the rated current of the power converter.

[0035] The third judgment strategy module is used to execute the cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter.

[0036] Preferably, the first judgment strategy module is used for:

[0037] Based on the maximum hardware current of the on-board charger, the first OBC operating current threshold and the second OBC operating current threshold are determined according to formulas (1) and (2), respectively:

[0038] I s1 =I O *K1 (1)

[0039] I s2 =I O*K2 (2)

[0040] Among them, I O K1 is the maximum hardware current of the on-board charger, K2 is the first OBC operating current parameter, and K1 > K2. s1 I is the first OBC operating current threshold. s2 The second OBC operating current threshold;

[0041] Determine whether the maximum current of the on-board charger is greater than or equal to the first OBC operating current threshold:

[0042] Yes, turn on the fan until the rated current of the power converter is less than or equal to the second OBC operating current threshold, then turn off the fan.

[0043] No, execute the current body temperature-based cooling fan control strategy.

[0044] Preferably, the second judgment strategy module is used for:

[0045] The operating current threshold of the power converter is obtained from the rated current of the power converter using formula (3):

[0046] I set =l D *k4 (3)

[0047] Among them, l D k is the rated current of the power converter, k4 is the operating current threshold of the power converter, and I set The operating current threshold of the power converter;

[0048] Determine whether the rated current of the power converter is greater than or equal to the operating current threshold of the power converter:

[0049] Yes, turn on the fan until the on-board charger's maximum hardware current is less than the power converter's operating current threshold, then turn the fan off.

[0050] No, execute the current body temperature-based cooling fan control strategy.

[0051] Preferably, the third judgment strategy module is used for:

[0052] Based on the current body temperature of the on-board charger and the current body temperature of the power converter, determine whether at least one of them is ≥ a temperature threshold:

[0053] Yes, turn on the fan until the current body temperature of the on-board charger and the current body temperature of the power converter are both determined to be less than the temperature threshold, then turn off the fan.

[0054] No, maintain the current state and repeatedly obtain the on-board charger's maximum hardware current and current body temperature, as well as the power converter's rated current and current body temperature.

[0055] According to a third aspect of the present invention, a terminal is provided, comprising:

[0056] One or more processors;

[0057] Memory for storing the one or more processor-executable instructions;

[0058] Wherein, the one or more processors are configured as follows:

[0059] Perform the method described in the first aspect of the embodiments of the present invention.

[0060] According to a fourth aspect of the present invention, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to perform the method described in the first aspect of the present invention.

[0061] According to a fifth aspect of the present invention, an application product is provided that, when the application product is running on a terminal, causes the terminal to execute the method described in the first aspect of the present invention.

[0062] The beneficial effects of this invention are as follows:

[0063] This invention provides a method, device, and terminal for controlling the cooling fan of a charging and power distribution system assembly. By detecting both current and temperature, it determines whether to turn the cooling fan on or off, avoiding the risk of overheating of the charging and power distribution system assembly and ensuring that the operating temperature of the charging and power distribution system assembly does not become too high, thereby improving its lifespan and efficiency.

[0064] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0065] Figure 1 This is a flowchart illustrating a cooling fan control method for a charging and distribution system assembly according to an exemplary embodiment;

[0066] Figure 2 This is a schematic block diagram illustrating the structure of a cooling fan control device for a charging and distribution system assembly according to an exemplary embodiment;

[0067] Figure 3 This is a schematic block diagram of a terminal structure according to an exemplary embodiment. Detailed Implementation

[0068] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0071] This invention provides a method for controlling the cooling fan of a charging and power distribution system assembly. This method is implemented by a terminal, which includes at least a CPU.

[0072] Example 1

[0073] Figure 1 This is a flowchart illustrating a cooling fan control method for a charging and distribution system assembly according to an exemplary embodiment. The method is used in a terminal and includes the following steps:

[0074] Step 101: Obtain the maximum hardware current and current body temperature of the on-board charger, as well as the rated current and current body temperature of the power converter.

[0075] Step 102: Execute the on-board charger operating current control strategy for the cooling fan based on the maximum hardware current of the on-board charger. The specific details are as follows:

[0076] Based on the maximum hardware current of the on-board charger, the first OBC operating current threshold and the second OBC operating current threshold are determined according to formulas (1) and (2), respectively:

[0077] I s1 =I O *K1 (1)

[0078] I s2 =I O *K2 (2)

[0079] Among them, I O K1 is the maximum hardware current of the on-board charger, K2 is the first OBC operating current parameter, and K1 > K2. s1 I is the first OBC operating current threshold. s2 The second OBC operating current threshold;

[0080] Determine whether the maximum current of the on-board charger is greater than or equal to the first OBC operating current threshold:

[0081] Yes, turn on the fan until the maximum hardware current of the on-board charger is less than or equal to the second OBC operating current threshold, then turn off the fan.

[0082] No, execute the current body temperature-based cooling fan control strategy.

[0083] The values ​​for K1 and K2 mentioned above vary depending on the vehicle model. Specific implementation examples are as follows:

[0084] The on-board charger has a maximum power of 2.3kW. Based on theoretical calculations and multiple simulations, K1 = 0.5, the voltage plateau is 115V, and the maximum current of the on-board charger is 20A. Therefore, I... s1 =20 * 0.5 = 10A, meaning the fan turns on when the on-board charger's operating current is ≥10A; according to formula I s2 = Maximum hardware current * K2. Through theoretical calculations and multiple simulations, K2 = 0.4, therefore I... s2 =20*0.4=8A, meaning the fan is turned off when the on-board charger's operating current is ≤8A.

[0085] Step 103: Execute the power converter operating current control strategy for the cooling fan based on the rated current of the power converter. The specific details are as follows:

[0086] The operating current threshold of the power converter is obtained from the rated current of the power converter using formula (3):

[0087] I set =l D *k4 (3)

[0088] Among them, l D k is the rated current of the power converter, k4 is the operating current threshold of the power converter, and I set The operating current threshold of the power converter;

[0089] Determine whether the rated current of the power converter is greater than or equal to the operating current threshold of the power converter:

[0090] Yes, turn on the fan until the rated current of the power converter is less than the operating current threshold of the power converter, then turn off the fan.

[0091] No, execute the current body temperature-based cooling fan control strategy.

[0092] The K4 value mentioned above varies depending on the vehicle model. Specific implementation examples are as follows:

[0093] The rated operating current of the power converter is 75A. After theoretical calculation and multiple simulation tests, K4 = 0.8. Therefore, Iset = 75 * 0.8 = 60A. That is, the fan is turned on when the operating current of the power converter is ≥ 60A and the fan is turned off when the operating current of the DC-DC converter is < 60A.

[0094] Step 104: Based on the current body temperature of the on-board charger and the current body temperature of the power converter, execute the cooling fan control strategy according to the current body temperature, as detailed below:

[0095] Based on the current body temperature of the on-board charger and the current body temperature of the power converter, determine whether at least one of them is ≥ a temperature threshold:

[0096] Yes, turn on the fan until the current body temperature of the on-board charger and the current body temperature of the power converter are both determined to be less than the temperature threshold, then turn off the fan.

[0097] No, maintain the current state and repeatedly obtain the on-board charger's maximum hardware current and current body temperature, as well as the power converter's rated current and current body temperature.

[0098] The temperature threshold mentioned above is 55*K3, where K3 is selected according to different vehicle models. Specific implementation examples are as follows:

[0099] Considering the maximum temperature that the power chips inside the on-board charger and power converter can withstand during operation, theoretical calculations and multiple tests yielded K3 = 1.1. Therefore, 55 * K3 = 60.5℃ and 50 * K3 = 55℃. This means that the fan will turn on when the temperature of the on-board charger or power converter is > 60.5℃, and will turn off when the temperature of the on-board charger or power converter is < 55℃.

[0100] Example 2

[0101] Figure 3 This is a schematic block diagram illustrating the structure of a cooling fan control device for a charging and distribution system assembly according to an exemplary embodiment. The device includes:

[0102] The acquisition module 210 is used to acquire the maximum hardware current and current body temperature of the on-board charger, as well as the rated current and current body temperature of the power converter.

[0103] The first judgment strategy module 220 is used to execute the on-board charger operating current control strategy for the cooling fan based on the maximum hardware current of the on-board charger.

[0104] The second judgment strategy module 230 is used to execute the power converter operating current control strategy for the cooling fan according to the rated current of the power converter.

[0105] The third judgment strategy module 240 is used to execute the cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter.

[0106] Preferably, the first judgment strategy module 220 is used for:

[0107] Based on the maximum hardware current of the on-board charger, the first OBC operating current threshold and the second OBC operating current threshold are determined according to formulas (1) and (2), respectively:

[0108] I s1 =I O *K1 (1)

[0109] I s2 =I O *K2 (2)

[0110] Among them, I O K1 is the maximum hardware current of the on-board charger, K2 is the first OBC operating current parameter, and K1 > K2. s1 I is the first OBC operating current threshold. s2 The second OBC operating current threshold;

[0111] Determine whether the maximum current of the on-board charger is greater than or equal to the first OBC operating current threshold:

[0112] Yes, turn on the fan until the maximum hardware current of the on-board charger is less than or equal to the second OBC operating current threshold, then turn off the fan.

[0113] No, execute the current body temperature-based cooling fan control strategy.

[0114] Preferably, the second judgment strategy module 230 is used for:

[0115] The operating current threshold of the power converter is obtained from the rated current of the power converter using formula (3):

[0116] Iset =l D *k4 (3)

[0117] Among them, l D k is the rated current of the power converter, k4 is the operating current threshold of the power converter, and I set The operating current threshold of the power converter;

[0118] Determine whether the rated current of the power converter is greater than or equal to the operating current threshold of the power converter:

[0119] Yes, turn on the fan until the on-board charger's maximum hardware current is less than the power converter's operating current threshold, then turn the fan off.

[0120] No, execute the current body temperature-based cooling fan control strategy.

[0121] Preferably, the third judgment strategy module 240 is used for:

[0122] Based on the current body temperature of the on-board charger and the current body temperature of the power converter, determine whether at least one of them is ≥ a temperature threshold:

[0123] Yes, turn on the fan until the current body temperature of the on-board charger and the current body temperature of the power converter are both determined to be less than the temperature threshold, then turn off the fan.

[0124] No, maintain the current state and repeatedly obtain the on-board charger's maximum hardware current and current body temperature, as well as the power converter's rated current and current body temperature.

[0125] Example 3

[0126] Figure 3 This is a structural block diagram of a terminal provided in an embodiment of this application. The terminal can be the terminal in the above embodiments. The terminal 300 can be a portable mobile terminal, such as a smartphone or tablet computer. The terminal 300 may also be referred to as user equipment, portable terminal, or other names.

[0127] Typically, terminal 300 includes a processor 301 and a memory 302.

[0128] Processor 301 may include one or more processing cores, such as a quad-core processor or an octa-core processor. Processor 301 may be implemented using at least one hardware form selected from DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). Processor 301 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 301 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 301 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0129] The memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. The memory 302 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 302 are used to store at least one instruction, which is executed by the processor 301 to implement a cooling fan control method for a charging and distribution system assembly provided in this application.

[0130] In some embodiments, the terminal 300 may also optionally include: a peripheral device interface 303 and at least one peripheral device. Specifically, the peripheral device includes at least one of: a radio frequency circuit 304, a touch display screen 305, a camera 306, an audio circuit 307, a positioning component 308, and a power supply 309.

[0131] The peripheral device interface 303 can be used to connect at least one I / O (Input / Output) related peripheral device to the processor 301 and the memory 302. In some embodiments, the processor 301, memory 302, and peripheral device interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 301, memory 302, and peripheral device interface 303 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0132] The radio frequency (RF) circuit 304 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 304 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 304 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals back into electrical signals. Optionally, the RF circuit 304 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit 304 can communicate with other terminals through at least one wireless communication protocol. This wireless communication protocol includes, but is not limited to: the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 304 may also include circuitry related to NFC (Near Field Communication), which is not limited in this application.

[0133] The touch display screen 305 is used to display a UI (User Interface). This UI may include graphics, text, icons, videos, and any combination thereof. The touch display screen 305 also has the ability to collect touch signals on or above its surface. These touch signals can be input as control signals to the processor 301 for processing. The touch display screen 305 is used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be one touch display screen 305, which is located on the front panel of the terminal 300; in other embodiments, there may be at least two touch display screens, respectively located on different surfaces of the terminal 300 or in a folded design; in still other embodiments, the touch display screen 305 may be a flexible display screen, located on a curved or folded surface of the terminal 300. Furthermore, the touch display screen 305 may be configured as a non-rectangular, irregular shape, i.e., a non-rectangular screen. The touch display screen 305 may be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0134] Camera assembly 306 is used to acquire images or videos. Optionally, camera assembly 306 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is used for video calls or selfies, and the rear-facing camera is used for taking photos or videos. In some embodiments, there are at least two rear-facing cameras, which are any one of a main camera, a depth-sensing camera, and a wide-angle camera, to achieve background blurring by fusion of the main camera and the depth-sensing camera, and panoramic shooting and VR (Virtual Reality) shooting by fusion of the main camera and the wide-angle camera. In some embodiments, camera assembly 306 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash is a combination of a warm light flash and a cool light flash, which can be used for light compensation at different color temperatures.

[0135] Audio circuit 307 provides an audio interface between the user and terminal 300. Audio circuit 307 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, converting the sound waves into electrical signals that are input to processor 301 for processing, or input to radio frequency circuit 304 for voice communication. For stereo sound acquisition or noise reduction purposes, multiple microphones may be used, each located at a different part of terminal 300. The microphone may also be an array microphone or an omnidirectional microphone. The speaker is used to convert electrical signals from processor 301 or radio frequency circuit 304 into sound waves. The speaker may be a conventional diaphragm speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can convert electrical signals not only into audible sound waves but also into inaudible sound waves for purposes such as distance measurement. In some embodiments, audio circuit 307 may also include a headphone jack.

[0136] The positioning component 308 is used to determine the current geographic location of the terminal 300 in order to enable navigation or LBS (Location Based Service). The positioning component 308 can be a positioning component based on the US GPS (Global Positioning System), China's BeiDou system, or Russia's Galileo system.

[0137] The power supply 309 is used to power the various components in the terminal 300. The power supply 309 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When the power supply 309 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired connection, while a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0138] In some embodiments, the terminal 300 further includes one or more sensors 310. The one or more sensors 310 include, but are not limited to: an accelerometer 311, a gyroscope 312, a pressure sensor 313, a fingerprint sensor 314, an optical sensor 315, and a proximity sensor 316.

[0139] Accelerometer 311 can detect the magnitude of acceleration along the three coordinate axes of a coordinate system established with terminal 300. For example, accelerometer 311 can be used to detect the components of gravitational acceleration along the three coordinate axes. Processor 301 can control touchscreen 305 to display the user interface in landscape or portrait view based on the gravitational acceleration signal acquired by accelerometer 311. Accelerometer 311 can also be used for games or for acquiring user motion data.

[0140] The gyroscope sensor 312 can detect the orientation and rotation angle of the terminal 300. The gyroscope sensor 312, in conjunction with the accelerometer sensor 311, can collect the user's 3D (3D) movements on the terminal 300. Based on the data collected by the gyroscope sensor 312, the processor 301 can perform the following functions: motion sensing (e.g., changing the UI based on the user's tilt), image stabilization during shooting, game control, and inertial navigation.

[0141] The pressure sensor 313 can be disposed on the side bezel of the terminal 300 and / or on the lower layer of the touch display screen 305. When the pressure sensor 313 is disposed on the side bezel of the terminal 300, it can detect the user's grip signal on the terminal 300 and perform left / right hand recognition or quick operation based on the grip signal. When the pressure sensor 313 is disposed on the lower layer of the touch display screen 305, it can control the operable controls on the UI interface based on the user's pressure operation on the touch display screen 305. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0142] The fingerprint sensor 314 is used to collect a user's fingerprint to identify the user's identity. When the user's identity is identified as trusted, the processor 301 authorizes the user to perform relevant sensitive operations, including unlocking the screen, viewing encrypted information, downloading software, making payments, and changing settings. The fingerprint sensor 314 can be located on the front, back, or side of the terminal 300. When the terminal 300 has physical buttons or a manufacturer's logo, the fingerprint sensor 314 can be integrated with the physical buttons or manufacturer's logo.

[0143] An optical sensor 315 is used to collect ambient light intensity. In one embodiment, the processor 301 can control the display brightness of the touch screen 305 based on the ambient light intensity collected by the optical sensor 315. Specifically, when the ambient light intensity is high, the display brightness of the touch screen 305 is increased; when the ambient light intensity is low, the display brightness of the touch screen 305 is decreased. In another embodiment, the processor 301 can also dynamically adjust the shooting parameters of the camera assembly 306 based on the ambient light intensity collected by the optical sensor 315.

[0144] The proximity sensor 316, also known as a distance sensor, is typically located on the front of the terminal 300. The proximity sensor 316 is used to detect the distance between the user and the front of the terminal 300. In one embodiment, when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually decreasing, the processor 301 controls the touchscreen display 305 to switch from a screen-on state to a screen-off state; when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually increasing, the processor 301 controls the touchscreen display 305 to switch from a screen-off state to a screen-on state.

[0145] Those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on terminal 300, and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0146] Example 4

[0147] In an exemplary embodiment, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements a cooling fan control method for a charging and distribution system assembly as provided in all embodiments of the present application.

[0148] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0149] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including—but not limited to—electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of transmitting, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0150] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0151] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0152] Example 5

[0153] In an exemplary embodiment, an application product is also provided, including one or more instructions that can be executed by the processor 301 of the aforementioned device to complete the aforementioned method for controlling the cooling fan of a charging and distribution system assembly.

Claims

1. A method for controlling the cooling fan of a charging and power distribution system assembly, characterized in that, include: Obtain the maximum hardware current and current body temperature of the on-board charger, and the rated current and current body temperature of the power converter, respectively. The on-board charger operating current control strategy for the cooling fan is executed based on the maximum hardware current of the on-board charger. The power converter operating current control strategy for the cooling fan is executed according to the rated current of the power converter. The cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter is executed according to the current body temperature. The step of executing the on-board charger operating current control strategy for the cooling fan based on the maximum hardware current of the on-board charger includes: The first OBC operating current threshold and the second OBC operating current threshold are determined according to the maximum hardware current of the on-board charger using formulas (1) and (2), respectively: Is1 = IO * K1(1) Is2 = IO * K2(2) Where IO is the maximum hardware current of the on-board charger, K1 is the first OBC operating current parameter, K2 is the second OBC operating current parameter, and K1 > K2, Is1 is the first OBC operating current threshold, and Is2 is the second OBC operating current threshold. Determine whether the operating current of the on-board charger is greater than or equal to the first OBC operating current threshold: Yes, turn on the fan until the on-board charger's operating current is less than or equal to the second OBC operating current threshold, then turn off the fan. No, execute the current body temperature-based cooling fan control strategy; The step of implementing a power converter operating current control strategy for the cooling fan based on the rated current of the power converter includes: The power converter's operating current threshold is obtained using formula (3) based on the rated current of the power converter: Iset = lD * k4 (3) where lD is the rated current of the power converter, k4 is 0.8, and Iset is the operating current threshold of the power converter; it is determined whether the operating current of the power converter is ≥ the operating current threshold of the power converter: if yes, the fan is turned on until the operating current of the power converter is < the operating current threshold of the power converter and then the fan is turned off; the step of executing the cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter includes: determining whether at least one of the current body temperature of the on-board charger and the current body temperature of the power converter is > 60.5℃: if yes, the fan is turned on until at least one of the current body temperature of the on-board charger and the current body temperature of the power converter is < 55℃ and then the fan is turned off; if no, the current state is maintained and the maximum hardware current and current body temperature of the on-board charger and the rated current and current body temperature of the power converter are repeatedly obtained.

2. A cooling fan control device for a charging and power distribution system assembly, characterized in that, include: The system includes: an acquisition module for acquiring the maximum hardware current and current body temperature of the on-board charger, and the rated current and current body temperature of the power converter; a first judgment strategy module for executing a control strategy for the cooling fan based on the maximum hardware current of the on-board charger; a second judgment strategy module for executing a control strategy for the cooling fan based on the rated current of the power converter; and a third judgment strategy module for executing a control strategy for the cooling fan based on the current body temperature of the on-board charger and the current body temperature of the power converter. The execution of the control strategy for the cooling fan based on the maximum hardware current of the on-board charger includes: determining the first OBC operating current threshold and the second OBC operating current threshold using formulas (1) and (2) based on the maximum hardware current of the on-board charger: Is1 = IO * K1 (1) Is2 = IO * K2 (2) Wherein, IO is the maximum hardware current of the on-board charger, K1 is the first OBC operating current parameter, and K2 is the second OBC operating current parameter. And K1>K2, Is1 is the first OBC operating current threshold, Is2 is the second OBC operating current threshold; Determine whether the operating current of the on-board charger is ≥ the first OBC operating current threshold: If yes, turn on the fan until the operating current of the on-board charger is ≤ the second OBC operating current threshold and then turn off the fan; If no, execute the current body temperature control strategy for the cooling fan; The execution of the power converter operating current control strategy for the cooling fan based on the rated current of the power converter includes: Obtaining the power converter operating current threshold based on the rated current of the power converter using formula (3): Iset=lD*k4(3) Where, lD is the rated current of the power converter, k4 is 0.8, and Iset is the power converter operating current threshold; Determine whether the operating current of the power converter is ≥ the power converter operating current threshold: If yes, turn on the fan until the operating current of the power converter is < the power converter operating current threshold and then turn off the fan; The step of implementing a cooling fan control strategy based on the current body temperature of the on-board charger and the current body temperature of the power converter includes: determining whether at least one of the current body temperature of the on-board charger and the current body temperature of the power converter is greater than 60.5°C: If yes, turn on the fan until it is determined whether at least one of the current body temperature of the on-board charger and the current body temperature of the power converter is less than 55°C, then turn off the fan; If no, maintain the current state and repeatedly obtain the maximum hardware current and current body temperature of the on-board charger, as well as the rated current and current body temperature of the power converter.

3. A terminal, characterized in that, include: One or more processors; A memory for storing one or more processor-executable instructions; wherein the one or more processors are configured to execute a cooling fan control method for a charging and distribution system assembly as described in claim 1.

4. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal, the terminal is able to execute the cooling fan control method for a charging and distribution system assembly as described in claim 1.

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