Structure for prolonging service life of cooling fan and cooling system

Abstract

The invention provides a structure for prolonging the service life of a cooling fan and a cooling system, and relates to the technical field of mobile phone wireless chargers, the structure for prolonging the service life of the cooling fan comprises a fan body, the fan body is arranged in a wireless charger, and the fan body comprises a fan Hall element and a sliding bearing; the opening of the bearing sleeve of the sliding bearing faces upwards; and the fan Hall element is far away from the strong magnet of the wireless charger. The fan body is a brushless motor fan. And the strong magnet is made of neodymium iron boron, is arranged at the upper part in the wireless charger and is used for fixedly connecting the mobile phone and the wireless charger, so that the mobile phone is adsorbed and aligned with the wireless charger during charging. After improvement, the service life is prolonged by 20%; and the phenomena of poor starting, unstable rotating speed and the like of the fan due to interference of strong magnetism are avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mobile phone wireless chargers, in particular to a structure for prolonging the service life of a cooling fan and a cooling system. BACKGROUND

[0002] The cooling fan has the following problems in the conventional application in the mobile phone wireless charger: (1) Due to cost requirements, a sliding bearing (containing oil) fan is applied to the fan; when the bearing sleeve opening is used downward, the oil loss is accelerated and the service life is shortened; (2) A strong magnet (neodymium iron boron) is commonly used in the charger, and the Hall of the fan is close to the mobile phone (also close to the strong magnet), and the Hall in the fan is easily interfered by the magnetic field of the magnet of the fixed hand plate. SUMMARY

[0003] The application provides a structure for prolonging the service life of a cooling fan and a cooling system to solve the technical problems in the background art.

[0004] To solve the above technical problems, the application discloses a structure for prolonging the service life of a cooling fan, which comprises a fan body, wherein the fan body is arranged in a wireless charger, the fan body comprises a fan Hall element and a sliding bearing, and further comprises: The bearing sleeve opening of the sliding bearing is arranged upward; The fan Hall element is away from a strong magnet of the wireless charger.

[0005] Preferably, the fan body is a brushless motor fan.

[0006] Preferably, the strong magnet is made of neodymium iron boron, the strong magnet is arranged at the upper part of the wireless charger, is used for fixedly connecting a mobile phone and the wireless charger, and makes the mobile phone and the wireless charger adsorbed and aligned when the mobile phone is charged.

[0007] Preferably, the fan body comprises a stator, a rotor and a fan Hall element, the fan Hall element realizes fan current commutation according to the sensed rotor magnetic field signal, and drives the fan blades on the rotor to rotate. The sliding bearing is used for supporting the rotor of the fan body, and the sliding bearing adopts an oil-containing sliding bearing structure.

[0008] The application further discloses a cooling system, which comprises the structure for prolonging the service life of a cooling fan and further comprises: A temperature detection module one is used for detecting the surface temperature of a target electrical device; the target electrical device is an electrical device in a wireless charger which is cooled by the fan body; each target electrical device corresponds to one temperature detection module one. A control device, which is electrically connected with the temperature detection module and the fan body; The control device comprises: An evaluation module, which is configured to periodically determine the temperature standard state value of the corresponding set duration one of each target electrical device based on the current detection value of the temperature detection module one in the set duration one; A first warning module, which is configured to perform a first warning when the temperature standard state value of the corresponding set duration one of any target electrical device is greater than a preset first standard state value; A second warning module, which is configured to perform a second warning when the corresponding set duration one fan body is working during the first warning of the first warning module.

[0009] Preferably, the control device comprises that the evaluation module calculates based on the following formula: ; Wherein, is the temperature standard state value of the kth set duration one of the ith target electrical device; is the average detection value of the last M detection values of the temperature detection module one in the kth set duration one of the ith target electrical device; is the maximum allowable temperature of the ith target electrical device; ; is a temperature state value compensation coefficient; is a corresponding reference value.

[0010] Preferably, the control device further comprises: A second temperature detection module, which is configured to detect the ambient temperature of the wireless charger; A wind speed detection module, which is configured to detect the wind speed of the fan body air outlet; The control device is electrically connected with the second temperature detection module and the wind speed detection module, respectively; The control device further comprises: A first acquisition module, which is configured to acquire the current set duration one power information of the mobile phone being charged, and acquire the power segment-average charging power mapping table of the mobile phone being charged; A second acquisition module, which is configured to acquire the wind speed-target electrical device theoretical heat dissipation efficiency fitting curve of the fan body air outlet, and the heat dissipation efficiency of the target electrical device is the ratio of the heat dissipation power of the target electrical device to the heat dissipation power of the fan body; A third acquisition module, which is configured to acquire the actual heat dissipation efficiency of each target electrical device in the last set duration one of the fan body heat dissipation; The determining module one is used for determining the target heat dissipation power of the fan body corresponding to the next setting time length one of each target electrical device based on the temperature detection module two detection value of the current setting time length one, the temperature standard state value of the current setting time length one of each target electrical device, the acquisition module one and the acquisition module two and the acquisition module three. The maximum target heat dissipation power of the fan body is selected as the required heat dissipation power of the fan body in the next setting time length one. The control module is used for controlling the fan body to work in the next setting time length based on the required heat dissipation power of the fan body in the next setting time length.

[0011] Preferably, the determining module one comprises: The determining unit one is used for determining the total target heat dissipation power of each target electrical device in the next setting time length one based on the average detection value of the last M detection values of the temperature detection module one in the current setting time length one. The determining unit two is used for determining the target heat dissipation power of the fan body corresponding to the next setting time length one of each target electrical device based on the total target heat dissipation power of each target electrical device in the next setting time length one, the acquisition module two, the acquisition module three, the temperature standard state value of the current setting time length one of each target electrical device and the temperature detection module two detection value of the current setting time length one.

[0012] Preferably, the intelligent early warning device comprises: The bearing detection module is used for detecting the key parameters of the sliding bearing, and the key parameters comprise a surface temperature, an amplitude and a vibration frequency. The determining module two is used for determining the current standard state value of each key parameter based on the key parameter detection value of the current sliding bearing. The third early warning module is used for early warning when the current standard state value of any key parameter is not within the corresponding allowable range. The test module is used for periodically performing a fan rotating speed adjustment test, performing a test for each test fan rotating speed for a setting time length two, determining a fan body rotating speed-key parameter average unit time standard state value change rate fitting curve corresponding to the fan rotating speed adjustment test, and calibrating the average unit time standard state value change rate of each test fan rotating speed. The determining module three is used for determining the current target maximum allowable rotating speed of the fan body based on the determining module two and the test module when the third early warning module early warns. The fourth early warning module is used for early warning when the actual rotating speed of the fan body is greater than or equal to the current target maximum allowable rotating speed of the fan body.

[0013] The technical solutions of the present application are described in further detail below with reference to the drawings and embodiments.

[0014] Compared with the prior art, the present application has the following beneficial effects: The motor mounting direction of the fan in the wireless charger is changed, so that the bearing sleeve opening is upward during use, and the service life of the fan is improved. The motor mounting direction of the fan in the charger is changed, so that the fan Hall element is away from the magnet for fixing the mobile phone, and the risk of interference is reduced.

[0015] After improvement, the service life is improved by 20%; the fan will not start badly due to strong magnetic interference, and the speed will not be unstable. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings: Figure 1 is a cross-sectional structure schematic diagram of the present application; Figure 2 is a cross-sectional structure schematic diagram of the prior art mobile phone wireless charger.

[0017] In the figure: 1, fan Hall element; 2, sliding bearing; 21, bearing sleeve outlet; 3, strong magnet; 4, mobile phone; 5, wireless charger. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application.

[0019] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and does not mean to specially indicate the order or sequence, nor to limit the present application, which is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0020] The present application provides the following embodiments: Embodiment 1, the present application provides a structure for improving the service life of a cooling fan, as shown in Figure 1 , comprising: The fan body is arranged in the wireless charger 5, the fan body comprises a fan Hall element 1 and a sliding bearing 2, and further comprises: The bearing sleeve opening of the sliding bearing 2 is arranged upwards (at the bearing sleeve outlet 21); Figure 1 The fan Hall element 1 is away from the strong magnet 3 of the wireless charger 5.

[0021] The fan body is a brushless motor fan.

[0022] The strong magnet 3 is made of neodymium iron boron, is arranged at an upper portion in the wireless charger 5, is used for fixedly connecting the mobile phone 4 and the wireless charger 5, and makes the mobile phone 4 be adsorbed and aligned with the wireless charger 5 during charging.

[0023] The fan body comprises a stator, a rotor and the fan Hall element 1, the fan Hall element 1 realizes fan current commutation according to the sensed rotor magnetic field signal, and then drives the fan blade on the rotor to operate. The sliding bearing 2 is used for supporting the rotor of the fan body, and the sliding bearing 2 adopts an oil-containing sliding bearing structure.

[0024] Figure 2 The sectional structure schematic diagram of the prior art mobile phone wireless charger; The above scheme has the beneficial effects that: The motor installation direction of the fan in the wireless charger is changed, the bearing sleeve opening is upward during use, and the service life of the fan is improved. The motor installation direction of the fan in the charger is changed, the fan Hall element 1 is away from the magnet for fixing the mobile phone, and the interference risk is reduced.

[0025] After the improvement, the service life is improved by 20%, and the fan will not start badly, the rotating speed is unstable and other phenomena due to the interference of the strong magnet.

[0026] In embodiment 2, the application discloses a heat dissipation system, comprising the structure for improving the service life of a heat dissipation fan, and further comprising: A temperature detection module one is used for detecting the surface temperature of a target electrical device; the target electrical device is an electrical device that is heat-dissipated by the fan body in the wireless charger; A control device is electrically connected with the temperature detection module one and the fan body; The control device comprises: An evaluation module is used for periodically determining the temperature standard state value of each target electrical device corresponding to the set time length one based on the temperature monitoring module one detection value within the current set time length one (which can be 10S-60S); ​First warning module: used to issue a first warning when the temperature standard state value of any target electrical device for a set time period is greater than the preset first standard state value; Second warning module: Used to issue a second warning when the first warning module issues a warning and the fan body operates for a set period of time. The evaluation module calculates based on the following formula:

[0027] in, The temperature standard state value for the k-th set duration of the i-th target electrical device; The average detection value of the last M (values ​​range from 3 to 10, with a possible value of 5) temperature detection values ​​of the i-th target electrical device within the k-th set time period; Let be the maximum allowable temperature of the i-th target electrical component; ; This is the temperature state value compensation coefficient (with a value greater than 0.1 and less than 1). for The corresponding baseline value (which can be between 0.1 and 0.5).

[0028] The beneficial effects of the above scheme are as follows: Temperature state quantification: through formula The temperature value of the target electrical device is converted into a standardized state value. Instead of relying solely on a single temperature threshold, it now considers the trend of temperature changes. (Reflects the rate of temperature change) and the maximum allowable temperature It can accurately depict the thermal state of electrical components, reducing false or missed warnings caused by temperature fluctuations.

[0029] Noise smoothing: utilizing (The average of the last M detection values ​​within a set time period) smooths the instantaneous noise of temperature detection, making the evaluation results more stable, closely reflecting the actual continuous heating state of electrical components, and improving the reliability of temperature evaluation.

[0030] Real-time risk warning (first warning module): when When the temperature exceeds the preset first standard state value, the first warning is triggered, which can quickly respond to the overheating risk of the electrical components at the current time and intervene in a timely manner to make adjustments (such as increasing the fan speed, suspending wireless charging, etc.) to avoid damage to the components due to continuous temperature rise and prevent failure.

[0031] Trace the heat dissipation effect of the fan body (second early warning module): when the first early warning is triggered, if the fan body in the corresponding set time length one is in working condition, but the overheat warning still occurs, it indicates that the heat dissipation effect of the fan body is abnormal, and the fan body rotating speed is adjusted according to the heat dissipation effect of the fan body , so that the next set time length one is adjusted according to Adjust the rotating speed of the fan body or suspend the use of the wireless charger.

[0032] The scheme of the present application supports periodic evaluation of temperature standard state values for multiple target electrical devices (devices with different functions and different thermal characteristics) in the wireless charger, adapts to the differentiated heat dissipation needs of multiple heat sources in the complex circuit, and can simultaneously guarantee the temperature safety of key devices such as the charging coil and the master control chip.

[0033] Optimize heat dissipation control and improve system reliability. Through accurate temperature evaluation and hierarchical early warning, the control device adjusts the fan heat dissipation strategy.

[0034] It can intervene in time at the initial stage of temperature anomaly, and reasonably schedule the fan work (such as dynamically adjusting the rotating speed and maintaining the fan in advance), which can not only guarantee that the target electrical device works in a safe temperature range, but also avoid invalid operation or over operation of the fan, prolong the service life of the fan and the entire wireless charging system, and improve the reliability and stability of long-term operation of the system.

[0035] Embodiment 3, based on embodiment 2, further comprises: A temperature detection module two is used to detect the external environment temperature of the wireless charger; A wind speed detection module is used to detect the wind speed of the fan body outlet; The control device is electrically connected with the temperature detection module two and the wind speed detection module; The control device further comprises: An acquisition module one is used to acquire the current power information of the mobile phone being charged in the set time length one, and acquire the power segment-average charging power mapping table of the mobile phone being charged (the charging power of the wireless charger itself can also be acquired based on the acquisition module); An acquisition module two is used to acquire the wind speed of the fan body outlet-target electrical device theoretical heat dissipation efficiency fitting curve, and the heat dissipation efficiency of the target electrical device is the ratio of the heat dissipation power of the target electrical device to the heat dissipation power of the fan body; An acquisition module three is used to acquire the actual heat dissipation efficiency of each target electrical device in the last heat dissipation set time length one of the fan body; Determine module: Used to determine the target heat dissipation power at the fan body corresponding to the next set duration one for each target electrical device based on the detection value of temperature detection module two of the acquisition module one, the acquisition module two, the acquisition module three, the current set duration one temperature standard state value of each target electrical device, and the current set duration one temperature standard state value of each target electrical device. And select the maximum target heat dissipation power at the fan body as the required heat dissipation power for the next set duration of the fan body; Control module: Used to control the fan body to work for the next set time period based on the required cooling power of the fan body for the next set time period.

[0036] The determining module includes: Determining Unit 1: Used to determine the total target heat dissipation power of each target electrical device for the next set time period based on the average detection value of the last M detection values ​​of the temperature detection module 1 within the current set time period 1 from the acquisition module 1. ; The heat generation power of the i-th target electrical device is determined based on the input power of the wireless charger corresponding to the average charging power of the mobile phone being charged for the next set time determined by the acquisition module 1 (based on the theoretical heat generation efficiency of the i-th target electrical device). The total target heat dissipation power for the next set duration of the i-th target electrical device; The average of the last M detection values ​​of the temperature detection module 1 within the current set time period of the i-th target electrical device; Let be the ideal operating temperature of the i-th target electrical device; For the i-th target electrical device from Down to Target duration; Let be the heat capacity of the i-th target electrical device; Unit 2: Used to determine the target heat dissipation power at the fan body corresponding to the next set time period of each target electrical device based on the total target heat dissipation power of the next set time period of each target electrical device, the acquisition module 2, the acquisition module 3, the current set time period of each target electrical device's temperature standard state value, and the current set time period of the temperature detection module 2's detection value.

[0037] ; in, The target heat dissipation power at the fan body corresponding to the next set duration for the i-th target electrical device; The compensation coefficient corresponding to the standard temperature value (based on experimental simulation calibration, the value can be 0.05-0.3). To obtain the actual heat dissipation efficiency of the i-th target electrical component obtained from Module 3; The heat dissipation power of the fan body is The theoretical average wind speed of the fan body at that time; The temperature detection value is the value detected by the second temperature detection module for the current set duration. The heat dissipation compensation coefficient is 2 (based on experimental simulation calibration, the value can be 0.05-0.3; the higher the ambient temperature, the greater the difficulty of heat dissipation, and the more powerful the fan needs to be). The beneficial effects of the above technical solution are as follows: Traditional problem: During wireless charging, changes in phone battery level and ambient temperature fluctuations cause dynamic changes in the heat demand of electrical components. Conventional heat dissipation operates at a fixed power, which can easily lead to "underheating" or "overheating". This invention uses Module 1 (battery level-power mapping) and Module 1 (thermal capacity-heat coupling calculation) to deduce the "total target heat dissipation power for the next time period" in real time, achieving dynamic matching of "heat demand-heat dissipation power". Temperature standard state compensation (in the formula of Unit 2) ): Introduction (Temperature standard state value) compensates for "gradual / abrupt temperature changes and the cooling effect of the fan body within the current set duration".

[0038] Actual heat dissipation efficiency feedback (obtained from Module 3) ): By comparing the "theoretical heat dissipation efficiency" with the "actual heat dissipation efficiency", the fan power requirements are adjusted to solve the efficiency degradation problems caused by dust accumulation in the air duct and fan aging.

[0039] Fan power decision: By integrating "total target heat dissipation power, temperature status, ambient temperature, and actual efficiency" in Unit 2, the "target heat dissipation power at the fan body" is output. This enables system-level collaboration between devices, fans, and the environment.

[0040] Selection of required heat dissipation power: Take the maximum target heat dissipation power as the requirement for the fan body to ensure heat dissipation safety under extreme operating conditions.

[0041] Example 4, based on any one of Examples 1-3, It also includes an intelligent early warning device, which comprises: Bearing testing module: used to test the key parameters of sliding bearing 2; key parameters include: surface temperature, amplitude, and vibration frequency; Module 2: Used to determine the current standard state value of each key parameter based on the current key parameter detection value of the sliding bearing 2; the current standard state value of the key parameter is: the current detection value of the key parameter ÷ the current maximum allowable value of the key parameter; The third early warning module is configured to perform early warning when any current standard state value of the key parameter is not within the corresponding allowable range. The test module is configured to periodically perform a fan speed adjustment test (select a plurality of test fan speeds from a normal speed range of the fan body according to a preset rule; the fan speed adjustment test can be performed every H days), perform a test for a set time period T2 for each test fan speed, and determine a fan body speed-key parameter average unit time standard state value change rate fitting curve corresponding to the fan speed adjustment test; each key parameter corresponds to a fitting curve. The third early warning module is configured to perform early warning when any current standard state value of the key parameter is not within the corresponding allowable range. The reference maximum allowable speed of the fan body is determined based on the reference standard state value of each key parameter under test. The reference standard state value of the mth key parameter of the fan body. The current standard state value of the mth key parameter of the fan body. The current fan body speed (based on detection and acquisition) at the average unit time standard state value change rate corresponding to the fan body speed-key parameter average unit time standard state value change rate fitting curve of the mth key parameter newly acquired by the test module. The maximum The ideal time interval between adjacent two times of determining the target maximum allowable speed of the fan body (which can be determined based on a preset different maximum value range-ideal time interval mapping table between adjacent two times of determining the target maximum allowable speed of the fan body (which can be calibrated based on experiments, and set based on different value ranges to the length of time to lose control), wherein the larger the maximum , the smaller the ideal time interval between adjacent two times of determining the target maximum allowable speed of the fan body; for example When the value range is 0.9-1, the ideal time interval between adjacent two times of determining the target maximum allowable speed of the fan body is 30 seconds. The weight corresponding to the mth key parameter (wherein the amplitude can be valued at 1.3-1.6, the temperature can be valued at 0.9-1.1, and the vibration frequency can be valued at 1.8-2.2). The fourth early warning module is configured to perform early warning when the actual speed of the fan body is greater than or equal to the current target maximum allowable speed of the fan body.

[0042] ​​The beneficial effects of the above scheme are: 1. Synchronous acquisition of multi-dimensional data such as "surface temperature (thermal field), amplitude (force field), and vibration frequency (frequency field)" by the bearing detection module, breaking through the limitations of traditional single parameter monitoring.

[0043] Using the standardization and normalization algorithm of determination module two, the discrete physical quantity is converted into a unified risk measure (standard state value), realizing: Accurate identification of compound faults (such as temperature mutation + vibration frequency offset coupling failure); Quantitative prediction of fault evolution trend (through change rate fitting curve, identifying bearing aging in advance); 2. Periodic speed regulation test of the test module, building a "speed-parameter change rate" digital twin model, realizing: Active exploration of bearing health status (simulate extreme working conditions to expose potential faults); Dynamic optimization of operation and maintenance strategy (based on fitting curve, adjust fan speed and maintenance period); Compared with traditional passive operation and maintenance, it can reduce the bearing failure downtime by more than 60% and save operation and maintenance cost by 40%.

[0044] 3. Multi-parameter weight formula of determination module three, accurately associating "thermal stress (temperature), mechanical stress (amplitude), and resonance risk (frequency)" with fan speed, realizing: Thermal balance control: in high temperature working condition, reduce the speed to reduce friction heat, prolong the life of bearing grease; Resonance avoidance: dynamic adjustment of frequency weight (resonance zone weight increased to 2.5), avoid critical speed operation, reduce bearing fatigue damage by 90%; 4. Multi-parameter collaborative early warning of the third early warning module, combined with the speed limit protection of the fourth early warning module, building a two-level blocking mechanism of "fault identification → speed limitation → chain protection": Primary protection (early warning): reduce speed in advance when parameters are abnormal to avoid fault escalation; Secondary protection (limit frequency): forced shutdown when speed exceeds the limit to prevent bearing seizure.

[0045] 5. Fan-bearing-environment collaborative optimization Through the dynamic speed calculation of determination module three, realizing: Balance between heat dissipation demand and bearing safety (in high temperature environment, prioritize bearing protection and moderately reduce heat dissipation power); Balance between energy consumption and reliability (in non-extreme working conditions, maintain high speed through weight optimization to ensure heat dissipation efficiency).

[0046] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A structure for improving the life of a heat dissipation fan, comprising a fan body provided in a wireless charger (5), the fan body comprising a fan Hall element (1) and a sliding bearing (2), characterized in that: Also include: The bearing sleeve opening of the sliding bearing (2) is arranged upward; The fan Hall element (1) is away from the strong magnet (3) of the wireless charger (5).

2. The structure for prolonging the life of a heat-dissipation fan according to claim 1, wherein: The fan body is a brushless motor fan.

3. The structure for prolonging the life of a heat-dissipation fan according to claim 1, wherein: The strong magnet (3) is made of neodymium iron boron material, which is arranged in the upper part of the wireless charger (5), used for fixedly connecting the mobile phone (4) and the wireless charger (5), so that the mobile phone (4) is adsorbed and aligned with the wireless charger (5) during charging.

4. The structure for prolonging the life of a cooling fan according to claim 1, wherein: The fan body includes a stator, a rotor, and a fan Hall element (1), which realizes fan current commutation according to the sensed rotor magnetic field signal, thereby driving the fan blades on the rotor to operate; The sliding bearing (2) is used to support the rotor of the fan body, and the sliding bearing (2) adopts an oil-containing sliding bearing structure.

5. A heat dissipation system characterized by, The structure for prolonging the service life of the heat dissipation fan includes the structure according to any one of claims 1-4, and further includes: The temperature detection module one is used for detecting the surface temperature of the target electrical device; the target electrical device is an electrical device in the wireless charger which is cooled by the fan body; each target electrical device corresponds to one temperature detection module one; The control device is electrically connected with the temperature detection module one and the fan body; The control device includes: The evaluation module is used for periodically determining the temperature standard state value of each target electrical device corresponding to the set time length one based on the temperature monitoring module one detection value in the current set time length one; The first warning module is used for first warning when the temperature standard state value of any target electrical device corresponding to the set time length one is greater than the preset first standard state value; The second warning module is used for second warning when the corresponding set time length one fan body is working during the first warning of the first warning module.

6. The heat dissipation system of claim 5, wherein, The control device includes that the evaluation module is calculated based on the following formula: ； wherein, is a temperature standard state value of the kth set time length of the ith target electrical device; is an average detection value of the last M detection values of the temperature detection module in the kth set time length of the ith target electrical device; is a maximum allowable temperature of the ith target electrical device; ； a temperature state value compensation coefficient; is a corresponding reference value.

7. The heat dissipation system of claim 5, wherein, Also include: The temperature detection module two is used for detecting the ambient temperature of the wireless charger; The wind speed detection module is used for detecting the wind speed of the fan body outlet; The control device is electrically connected with the temperature detection module two and the wind speed detection module respectively; The control device further includes: The acquisition module one is used for acquiring the current power information in the set time length one of the mobile phone being charged, and acquiring the power segment-average charging power mapping table of the mobile phone being charged; The acquisition module two is used for acquiring the wind speed-target electrical device theoretical heat dissipation efficiency fitting curve of the fan body outlet, and the heat dissipation efficiency of the target electrical device is the ratio of the heat dissipation power of the target electrical device to the heat dissipation power at the fan body; The acquisition module three is used for acquiring the actual heat dissipation efficiency of each target electrical device in the set time length one of the fan body; The determination module one is used for determining the corresponding fan body target heat dissipation power of each target electrical device in the next set time length one based on the acquisition module one, the acquisition module two, the acquisition module three, the temperature detection module two detection value in the current set time length one, and the temperature standard state value of each target electrical device in the current set time length one; And the maximum fan body target heat dissipation power is selected as the required heat dissipation power of the fan body in the next set time length one; The control module is configured to control the fan body to work in the next setting time length based on the required heat dissipation power of the fan body in the next setting time length.

8. The heat dissipation system of claim 7, wherein, The determination module one comprises: The determination unit one is configured to determine the total target heat dissipation power of each target electric device in the next setting time length one based on the average detection value of the last M detection values of the temperature detection module one in the current setting time length one obtained by the acquisition module one; The determination unit two is configured to determine the target heat dissipation power of the fan body corresponding to each target electric device in the next setting time length one based on the total target heat dissipation power of each target electric device in the next setting time length one, the temperature standard state value of each target electric device in the current setting time length one obtained by the acquisition module two, the acquisition module three, and the detection value of the temperature detection module two in the current setting time length one.

9. The heat dissipation system of claim 5, wherein, Further comprising an intelligent early warning device, the intelligent early warning device comprises: The bearing detection module is configured to detect key parameters of the sliding bearing (2); the key parameters comprise surface temperature, amplitude, and vibration frequency; The determination module two is configured to determine the current standard state value of each key parameter based on the detection value of the current key parameter of the sliding bearing (2); The third early warning module is configured to perform early warning when the current standard state value of any key parameter is not within the corresponding allowable range; The test module is configured to periodically perform a fan speed adjustment test, each test fan speed is set for a test time length two, determine the average unit time standard state value change rate fitting curve of the fan body speed-key parameter corresponding to the fan speed adjustment test, and calibrate the average unit time standard state value change rate of each test fan speed; The determination module three is configured to determine the current target maximum allowable speed of the fan body based on the determination module two and the test module when the third early warning module performs early warning; The fourth early warning module is configured to perform early warning when the actual speed of the fan body is greater than or equal to the current target maximum allowable speed of the fan body.

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