A fan speed protection strategy control device

Abstract

The utility model discloses a fan speed protection strategy control device, which belongs to the technical field of automobile cooling system. It mainly includes: a fan, a Hall-type speed sensor, an ECU, and a vehicle instrument panel, and is characterized in that: the fan, the Hall-type speed sensor, the ECU, and the vehicle instrument panel are mutually adapted and connected by a data cable; wherein the Hall-type speed sensor is installed on one side of the fan to transmit the fan speed information to the ECU and the vehicle instrument panel. The fan speed information is displayed to the outside by the vehicle instrument panel, and the manual or automatic working mode is assigned by the vehicle instrument panel. The utility model adds at least one Hall-type speed sensor to the existing vehicle configuration and connects to the ECU, so as to read the fan speed in real time, and send a CAN signal to the vehicle instrument panel, and selects manual or automatic control of the fan speed through the instrument panel, thereby achieving the purpose of protecting the fan, so as to increase the service life of the fan. The utility model is mainly used for the protection of cooling fans.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile cooling systems, and in particular relates to a fan speed protection strategy control device. Background Art

[0002] During the automobile R&D road test and market user use, PWM fans cannot monitor the actual fan speed. When the vehicle is fully loaded and continuously climbing at high temperature, the engine water temperature rises rapidly, the fan speed is too high, or exceeds its own design speed. In this case, the fan speed cannot be estimated, and the actual fan speed cannot be read. Without manual control of the fan speed, the fan cannot be protected. Once the fan is damaged, it is a great risk to the vehicle and personal safety. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art and provide a fan speed protection strategy control device, which adds at least one Hall speed sensor to the existing vehicle configuration and connects it to the ECU, so as to read the fan speed in real time and send a CAN signal to the vehicle dashboard, and selects manual or automatic control of the fan speed through the dashboard, thereby achieving the purpose of protecting the fan.

[0004] The fan speed protection strategy control device includes: a fan, a Hall speed sensor, an ECU (on-board computer), and a vehicle dashboard, and is characterized in that: the fan, the Hall speed sensor, the ECU (on-board computer), and the vehicle dashboard are mutually adapted and connected by a data cable; wherein the Hall speed sensor is installed on one side of the fan, and is used to obtain the fan speed, and transmit the fan speed information to the ECU (on-board computer) and the vehicle dashboard. The fan speed information is displayed externally by the vehicle dashboard, and the vehicle dashboard allocates manual or automatic working mode.

[0005] Preferably, the ECU (on-board computer) can send CAN (controller area network) signal EMS_Fan_Speed ​​(fan speed) data to the vehicle dashboard, and the vehicle dashboard displays it.

[0006] Preferably, the vehicle instrument panel is integrated with a manual fan speed adjustment mechanism and an automatic fan speed adjustment mechanism.

[0007] Preferably, the manual fan speed adjustment mechanism sends CAN (Controller Area Network) signal IC_DisplayFanspeed_LevelReq (display fan speed level requirement) data from the vehicle dashboard to the ECU (on-board computer), and the ECU (on-board computer) retrieves different MAP (control curve) diagrams.

[0008] Preferably, the fan speed automatic adjustment mechanism is controlled by a one-key recovery EMS (energy management system) logic set on the vehicle dashboard; the ECU (on-board computer) automatically adjusts the MAP (control curve) map.

[0009] Preferably, when the fan speed exceeds the limited speed or runs at 95% of the maximum limited speed for more than 10 minutes, the ECU (on-board computer) sends a CAN signal EMS_Fan_Overload (overload alarm) to the instrument panel, which is displayed externally on the vehicle instrument panel.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. Add at least one Hall-type speed sensor to the existing vehicle configuration and connect it to the ECU to read the fan speed in real time and send a CAN signal to the vehicle dashboard. The dashboard allows users to manually or automatically control the fan speed, thereby protecting the fan and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a connection diagram of the utility model;

[0013] Figure 2 It is a working logic diagram of the utility model;

[0014] In the figure, 100, fan; 200, Hall-type speed sensor; 300, ECU (on-board computer); 400, vehicle instrument panel; 500, data cable. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0017] like Figure 1 and Figure 2As shown, a fan speed protection strategy control device includes: a fan 100, a Hall-type speed sensor 200, an ECU (on-board computer) 300, and a vehicle dashboard 400, characterized in that: the fan 100, the Hall-type speed sensor 200, the ECU (on-board computer) 300, and the vehicle dashboard 400 are mutually adapted and connected by a data cable 500; wherein the Hall-type speed sensor 200 is installed on one side of the fan 100, and is used to obtain the speed of the fan 100, and transmit the speed information of the fan 100 to the ECU (on-board computer) 300 and the vehicle dashboard 400. wherein the speed information of the fan 100 is displayed externally by the vehicle dashboard 400, and the vehicle dashboard 400 allocates the manual or automatic working mode.

[0018] like Figure 2 As shown, the ECU (on-board computer) 300 can send CAN (controller area network) signal EMS_Fan_Speed ​​(fan 100 speed) data to the vehicle dashboard 400, and the vehicle dashboard 400 displays it. In this way, the ECU transmits the relevant data to the vehicle dashboard 400, so that the driver can intuitively understand the current real-time status of the vehicle, so that the driver can control the vehicle accordingly. Not only the convenience of reading vehicle information is improved, but also the safety of vehicle driving is improved.

[0019] like Figure 2 As shown, the vehicle instrument panel 400 integrates a manual adjustment mechanism for the speed of the fan 100 and an automatic adjustment mechanism for the speed of the fan 100. In this way, the driver can choose the manual adjustment mechanism or the automatic adjustment mechanism according to the actual driving situation or the driver's driving habits. This allows the driver to have diversified choices and improves the applicability of driving.

[0020] like Figure 2 As shown, the manual adjustment mechanism of the speed of the fan 100 is that the vehicle dashboard 400 sends the CAN (controller area network) signal IC_DisplayFanspeed_LevelReq (display fan speed level requirement) data to the ECU (on-board computer) 300, and the ECU (on-board computer) 300 calls different MAP (control curve) diagrams. In this way, the ECU calls the corresponding preset MAP diagram and duty cycle according to the comprehensive situation of the vehicle body and the driving choice, so that the fan 100 speed is installed to work according to the preset MAP diagram, thereby achieving the purpose of protecting the fan 100 and improving the service life of the fan 100.

[0021] like Figure 2As shown, the automatic speed adjustment mechanism of the fan 100 is controlled by the one-key recovery EMS (energy management system) logic set on the vehicle dashboard 400; the ECU (on-board computer) 300 automatically adjusts the MAP (control curve) map. In this way, the ECU can automatically adjust the variables of the MAP map and the variables of the duty cycle according to the comprehensive conditions of the vehicle. Thus, the purpose of automatically adjusting the speed of the fan 100 is achieved, so as to increase the service life of the fan 100.

[0022] like Figure 2 As shown, when the speed of the fan 100 exceeds the limited speed or runs at 95% of the maximum limited speed for more than 10 minutes, the ECU (vehicle computer) 300 sends a CAN signal EMS_Fan_Overload (overload alarm) to the instrument panel, which is displayed externally by the vehicle instrument panel 400. In this way, through the preset protection mechanism triggering conditions, the abnormal speed of the fan 100 can be intervened in time to prevent the fan 100 from overclocking or running at full load for a long time, effectively improving the service life of the fan 100.

[0023] like Figure 2 As shown, the temperature information of the water tank and the speed information of the fan 100 read by the Hall sensor are sent to the ECU in a real-time monitoring manner, and after being processed by the ECU, they are sent to the vehicle instrument panel 400 and displayed. If the speed of the fan 100 is normal, only the corresponding real-time speed and other information are displayed on the vehicle instrument panel 400. On the contrary, if the speed of the fan 100 is abnormal, the ECU will send the abnormal information to the vehicle instrument panel 400 so that the driver can intuitively understand the relevant information of the vehicle abnormality, and according to the actual driving situation or the driver's driving habits, select the manual adjustment mode or the automatic adjustment mode to control the speed of the fan 100, so that the fan 100 can be kept within a reasonable working range, so as to improve the service life of the fan 100. The difference between the manual control mode and the automatic control mode is that the manual control mode calls different preset MAP diagrams and duty ratios according to the current vehicle speed to realize PWM control of the speed of the fan 100. The automatic control mode automatically adjusts the MAP diagram and the duty ratio according to the current vehicle speed to realize automatic control of the speed of the fan 100. Both control modes can protect the fan 100 , thereby increasing the service life of the fan 100 .

[0024] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fan speed protection strategy control device, comprising: A fan (100), a Hall-type speed sensor (200), an ECU (300), and a vehicle instrument panel (400), characterized in that the fan (100), the Hall-type speed sensor (200), the ECU (300), and the vehicle instrument panel (400) are mutually adaptably connected by a data cable (500); wherein the Hall-type speed sensor (200) is installed on one side of the fan (100) and is used to obtain the speed of the fan (100), and transmit the speed information of the fan (100) to the ECU (300) and the vehicle instrument panel (400); wherein the speed information of the fan (100) is displayed externally by the vehicle instrument panel (400), and the vehicle instrument panel (400) allocates a manual or automatic working mode.

2. A fan speed protection strategy control device according to claim 1, characterized in that: The ECU (300) is capable of sending fan speed data of a controller area network signal to a vehicle dashboard (400), and the fan speed data is displayed by the vehicle dashboard (400).

3. A fan speed protection strategy control device according to claim 1, characterized in that: The vehicle instrument panel (400) is integrated with a manual adjustment mechanism for the speed of the fan (100) and an automatic adjustment mechanism for the speed of the fan (100).

4. A fan speed protection strategy control device according to claim 3, characterized in that: The fan (100) speed manual adjustment mechanism is configured such that the vehicle dashboard (400) sends a controller area network signal to the ECU (300) to display fan speed level requirement data, and the ECU (300) retrieves different control curve diagrams.

5. A fan speed protection strategy control device according to claim 3, characterized in that: The fan (100) speed automatic adjustment mechanism is controlled by a one-key recovery energy management system logic arranged on the vehicle dashboard (400); and the control curve is automatically adjusted by the ECU (300).

6. A fan speed protection strategy control device according to any one of claims 1 to 5, characterized in that: When the speed of the fan (100) exceeds a limited speed or runs at 95% of the maximum limited speed for more than 10 minutes, the ECU (300) sends an overload alarm message via a CAN signal to the instrument panel, which is then displayed externally by the vehicle instrument panel (400).

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