Temperature control type air cooling heat dissipation control method

Abstract

The invention discloses a temperature control type air cooling heat dissipation control method which comprises a fan, a controller and a fan support, the fan is fixed in the fan support and electrically connected with the controller, the fan support is provided with an air guide groove, and the air guide groove is matched with the controller. The control method further comprises the step that the controller sets the output duty ratio of the fan according to the temperature data T and the output power P. Through the design of the fan support and the air guide groove, the utilization of the internal space of the electric vehicle is optimized, airflow can be guided more effectively, and the heat dissipation efficiency is improved. The output duty ratio of the fan is intelligently set through the controller according to the temperature data T and the output power P, precise control over the fan is achieved, unnecessary energy consumption is avoided, and overall energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of electric vehicles, and in particular to a control method for temperature-controlled air-cooling heat dissipation. Background Art

[0002] With the rapid development of electric two-wheeled vehicle technology, the improvement of vehicle performance has put forward higher requirements on the power components of the whole vehicle. In this context, how to achieve effective heat dissipation of power components in a limited space has become a key technical challenge in the design of electric two-wheeled vehicles. The existing heat dissipation problem of small-power controllers can usually be solved by increasing the surface area of ​​the heat dissipation material, but this method seems to be inadequate in the face of growing power demand because the increase in heat dissipation area is strictly limited by the installation size.

[0003] To solve this problem, fan cooling has become the first choice due to its cost-effectiveness and technical feasibility. However, there are several problems in the actual application of fan cooling technology, which mainly focus on the installation method, driving mechanism and energy consumption management of the fan.

[0004] In existing fan cooling solutions, the fan is usually installed directly above the controller heat sink and uses self-priming cooling. In this design, the fan's coverage is limited by its diameter, resulting in uneven cooling. In addition, the fan control method is also a problem. In some designs, the fan starts when the power is turned on or the electric two-wheeled vehicle reaches a preset speed. Although this control method is simple, it has energy loss problems and cannot achieve precise control of fan cooling.

[0005] Therefore, it is necessary to make improvements to the above problems in order to achieve effective heat dissipation of power components in a limited space, while reducing energy consumption and improving the uniformity and control accuracy of heat dissipation. Summary of the invention

[0006] The present invention aims to solve the defects of the prior art such as poor heat dissipation effect on power components in a limited space and inability to achieve precise control of fan heat dissipation, and provides a new control method for temperature-controlled air-cooled heat dissipation.

[0007] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0008] A control method for temperature-controlled air-cooling heat dissipation includes a fan, a controller, and a fan bracket, wherein the fan is fixed in the fan bracket, the fan is electrically connected to the controller, the fan bracket is provided with an air guide groove, and the air guide groove cooperates with the controller. The control method also includes the following steps:

[0009] S1: The controller obtains temperature data T and proceeds to step S2;

[0010] S2: The controller obtains the output power P. When the output power P>0, it goes to step S3, otherwise it goes to step S1;

[0011] S3: The controller sets the output duty cycle of the fan according to the temperature data T and the output power P, and then enters step S1.

[0012] The design of the fan bracket and air guide slot optimizes the use of the internal space of the electric vehicle, which can more effectively guide the airflow and improve the heat dissipation efficiency. The controller intelligently sets the fan output duty cycle according to the temperature data T and the output power P, realizing precise control of the fan, avoiding unnecessary energy consumption and reducing overall energy consumption.

[0013] The present invention realizes effective heat dissipation of power components in a limited space through the above design, while reducing energy consumption and improving heat dissipation uniformity and control accuracy. The fan control method does not adopt the negative or positive control method to drive, and temperature sampling reduces the use of temperature resistors and reduces the use of internal devices.

[0014] Preferably, in the above-mentioned method for controlling temperature-controlled air-cooling heat dissipation, an air guide plate is provided in the air guide groove, and the air guide plate cooperates with the controller.

[0015] The setting of the air guide plate can guide the airflow more effectively, adjust the direction of the airflow, and make the air volume distribution more even.

[0016] Preferably, in the above-mentioned method for controlling temperature-controlled air-cooling heat dissipation, the air guide slots are arranged in an array.

[0017] The array arrangement of air guide slots helps to optimize the air duct design, further improves the airflow adjustment capability, and makes the air volume distribution more uniform.

[0018] Preferably, in the above-described temperature-controlled air-cooling control method, the controller is provided with an NTC temperature resistor, a bus current sampling module, a three-phase current sampling module, and an MCU calculation module.

[0019] The above design enables the controller to obtain the temperature changes inside the electric vehicle in real time, providing accurate data support for heat dissipation control.

[0020] Preferably, in the above-described control method for temperature-controlled air-cooled heat dissipation, in step S1, the controller obtains the temperature data T including the following steps: the controller samples the voltage across the NTC temperature resistor and the current flowing through it, obtains the internal resistance of the NTC temperature resistor through the MCU calculation module, and then converts the internal resistance and the MOS tube temperature through the MCU calculation module to obtain the temperature data T.

[0021] The temperature of the MOS tube is indirectly obtained by measuring the internal resistance of the NTC resistor. This non-contact measurement method can reduce the impact of external factors on temperature measurement, reduce the use of temperature resistors, and reduce the use of internal devices in the controller.

[0022] Preferably, in the above-mentioned method for controlling temperature-controlled air-cooling heat dissipation, a driving module is provided in the fan, and the MCU computing module is electrically connected to the driving module.

[0023] Through the electrical connection between the MCU computing module and the drive module, the fan speed can be accurately controlled to adapt to different heat dissipation requirements, improve heat dissipation efficiency and reduce energy consumption.

[0024] Preferably, in the above-described temperature-controlled air-cooling control method, in step S3, the MCU calculation module of the controller sends a PWM control signal to the drive module to set the output duty cycle of the fan according to the temperature data T and the output power P.

[0025] The fan control method does not adopt the negative or positive control drive method. The MCU calculation module dynamically adjusts the PWM signal according to the real-time temperature and power data to achieve precise control of the fan output duty cycle to adapt to the changing heat dissipation requirements.

[0026] Preferably, in the above-described control method for temperature-controlled air-cooling heat dissipation, in step S3, the controller sets the output duty cycle of the fan according to the temperature data T and the output power P, including the following steps: when the temperature data T≤40℃ and the output power P≤500W within 10s, the output duty cycle of the fan is set to 0%; when the temperature data T≤40℃ and the output power P within 10s>500W, the output duty cycle of the fan is set to 20%; when 40℃<temperature data T≤70℃ and the output power P within 10s>700W, the output duty cycle of the fan is set to 70%; when the temperature data T>70℃ and the output power P within 10s>700W, the output duty cycle of the fan is set to 100%.

[0027] By setting different duty cycles according to different temperature and power conditions, the energy consumption of the fan can be precisely controlled, allowing the cooling system to flexibly adapt to different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the fan in the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the controller in the present invention;

[0030] Figure 3 It is a schematic diagram of module connection of the present invention;

[0031] Figure 4 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 The present invention is further described in detail with specific embodiments, but they are not intended to limit the present invention:

[0033] Example 1

[0034] A control method for temperature-controlled air-cooling heat dissipation includes a fan 1, a controller 2, and a fan bracket 3. The fan 1 is fixed in the fan bracket 3. The fan 1 is electrically connected to the controller 2. The fan bracket 3 is provided with an air guide groove 4. The air guide groove 4 cooperates with the controller 2. The control method also includes the following steps:

[0035] S1: Controller 2 obtains temperature data T and proceeds to step S2;

[0036] S2: Controller 2 obtains output power P. When output power P>0, it goes to step S3, otherwise it goes to step S1;

[0037] S3: the controller 2 sets the output duty cycle of the fan 1 according to the temperature data T and the output power P, and then enters step S1.

[0038] Preferably, an air guide plate 5 is provided in the air guide groove 4 , and the air guide plate 5 cooperates with the controller 2 .

[0039] Preferably, the air guide slots 4 are arranged in an array.

[0040] Preferably, the controller 2 is provided with an NTC temperature resistor, a bus current sampling module, a three-phase current sampling module, and an MCU calculation module.

[0041] Preferably, in step S1, the controller 2 obtains the temperature data T including the following steps: the controller 2 samples the voltage across the NTC temperature resistor and the current flowing through it, obtains the internal resistance of the NTC temperature resistor through the MCU calculation module, and then converts the internal resistance and the MOS tube temperature through the MCU calculation module to obtain the temperature data T.

[0042] Preferably, a driving module is provided in the fan 1, and the MCU computing module is electrically connected to the driving module.

[0043] Preferably, in step S3, the MCU calculation module of the controller 2 sends a PWM control signal to the driving module to set the output duty cycle of the fan 1 according to the temperature data T and the output power P.

[0044] Preferably, in step S3, the controller 2 sets the output duty cycle of the fan 1 according to the temperature data T and the output power P, including the following steps: when the temperature data T≤40℃ and the output power P≤500W within 10s, the output duty cycle of the fan 1 is set to 0%; when the temperature data T≤40℃ and the output power P within 10s>500W, the output duty cycle of the fan 1 is set to 20%; when 40℃<temperature data T≤70℃ and the output power P within 10s>700W, the output duty cycle of the fan 1 is set to 70%; when the temperature data T>70℃ and the output power P within 10s>700W, the output duty cycle of the fan 1 is set to 100%.

[0045] like Figure 1 As shown, the fan 1 is fixed in the fan bracket 3, and the air guide plate 5 can be set in a direction, which structurally solves the problem of fan position design in a limited space.

[0046] like Figure 3 As shown, the power supply supplies power to the controller 2 and the fan 1 , and the MCU calculation module sends a PWM control signal to the drive module according to the temperature data T and the output power P to set the output duty cycle of the fan 1 .

[0047] like Figure 4 As shown, the output duty cycle of fan 1 corresponding to the four temperature data T and output power P under normal circumstances, when it does not meet these four conditions, the output duty cycle of fan 1 can be set to 20% to cope with special situations, such as when the output power P is small and the temperature data T is large.

[0048] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A method for controlling temperature-controlled air cooling and heat dissipation, comprising a fan (1) and a controller (2), characterized in that: The control method further comprises a fan bracket (3), the fan (1) being fixed in the fan bracket (3), the fan (1) being electrically connected to the controller (2), the fan bracket (3) being provided with an air guide groove (4), the air guide groove (4) being coordinated with the controller (2), and the control method further comprises the following steps: S1: The controller (2) obtains temperature data T and proceeds to step S2; S2: the controller (2) obtains the output power P. When the output power P>0, it goes to step S3, otherwise it goes to step S1; S3: The controller (2) sets the output duty cycle of the fan (1) according to the temperature data T and the output power P, and then enters step S1.

2. A temperature-controlled air-cooling heat dissipation control method according to claim 1, characterized in that: An air guide plate (5) is arranged in the air guide groove (4), and the air guide plate (5) cooperates with the controller (2).

3. The method for controlling temperature-controlled air cooling according to claim 1, characterized in that: The air guide grooves (4) are arranged in an array.

4. The method for controlling temperature-controlled air cooling according to claim 1, characterized in that: The controller (2) is provided with an NTC temperature resistor, a bus current sampling module, a three-phase current sampling module, and an MCU calculation module.

5. A temperature-controlled air-cooling heat dissipation control method according to claim 4, characterized in that: In step S1, the controller (2) obtains the temperature data T, including the following steps: the controller (2) samples the voltage across the NTC temperature resistor and the current flowing through the NTC temperature resistor, obtains the internal resistance of the NTC temperature resistor through the MCU calculation module, and then converts the correspondence between the internal resistance and the MOS tube temperature through the MCU calculation module to obtain the temperature data T.

6. A temperature-controlled air-cooling heat dissipation control method according to claim 4, characterized in that: A drive module is provided in the fan (1), and the MCU calculation module is electrically connected to the drive module.

7. A temperature-controlled air-cooling heat dissipation control method according to claim 6, characterized in that: In step S3, the MCU calculation module of the controller (2) sends a PWM control signal to the driving module according to the temperature data T and the output power P to set the output duty cycle of the fan (1).

8. The method for controlling temperature-controlled air cooling according to claim 1, characterized in that: In step S3, the controller (2) sets the output duty cycle of the fan (1) according to the temperature data T and the output power P, including the following steps: when the temperature data T≤40°C and the output power P within 10s is ≤500W, the output duty cycle of the fan (1) is set to 0%; when the temperature data T≤40°C and the output power P within 10s is >500W, the output duty cycle of the fan (1) is set to 20%; when 40°C<temperature data T≤70°C and the output power P within 10s is >700W, the output duty cycle of the fan (1) is set to 70%; when the temperature data T>70°C and the output power P within 10s is >700W, the output duty cycle of the fan (1) is set to 100%.

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