Chassis controller mounting device and heat dissipation method

Abstract

The present invention relates to the technical field of chassis controllers for commercial vehicles, and specifically to a chassis controller installation device and a heat dissipation method. The chassis controller installation device includes: a controller box, a radiator, an altitude sensor, a temperature sensor, and a heat dissipation controller; the controller box is used to be set on the chassis to install the chassis controller; the radiator is arranged in the controller box to discharge the heat in the controller box; the altitude sensor and the temperature sensor are used to obtain the altitude of the vehicle and the ambient temperature of the chassis controller respectively; the heat dissipation controller is used to control the power of the radiator according to the altitude of the vehicle and the temperature in the controller box. It can solve the problem in the prior art that the rotation speed of the radiator is only high or low, which will lead to uneven heat dissipation of the chassis controller, thereby causing the chassis controller temperature to be unstable and its working performance to be unreliable.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicle chassis controllers, and in particular to a chassis controller mounting device and a heat dissipation method. Background Art

[0002] Chassis electronic control (chassis electronic control) With the rapid development of electronic technology, especially large-scale integrated circuit and microcomputer technology, the degree of electronicization of automobiles is getting higher and higher. The automobile chassis system has also changed the previous mechanical structure that completely relied on hydraulic or pneumatic actuators to transmit force, and has begun to adopt electronic servo control.

[0003] Chassis electronic control technology can be divided into drive control, brake control, steering control, body posture control and comprehensive control according to the vehicle structure and assembly control functions. Drive control technology includes traction control, cruise control, etc. Braking control includes anti-lock braking, brake pressure auxiliary control, etc. Steering control includes electric power steering, four-wheel steering control, etc. Body posture control includes semi-active / active suspension, body height adjustment, anti-roll control, etc. Comprehensive control includes anti-skid control, stability control, etc.

[0004] The existing controller is arranged inside the vehicle body, and the vehicle itself is equipped with air conditioning, and the controller basically works in a relatively constant environment.

[0005] With the development of commercial vehicle technology, more and more electronic control functions are being added, and the number of controllers is increasing rapidly. The space in the vehicle body cannot meet the requirements, so some controllers (such as brake controllers) will be arranged on the chassis. This will change the chassis controller from working in a relatively constant environment to working in various complex environments.

[0006] As a means of transportation, commercial vehicles often need to work across regions or climate environments (such as high altitudes and high temperatures). Conventional air cooling is mostly for heat dissipation in a static state, rather than heat dissipation in a low-speed or high-speed motion state. The temperature of the controller changes greatly during operation. To ensure the best working state of the controller, the chassis controller layout must consider multiple factors such as heat dissipation and ambient temperature adaptation. The heat dissipation method in the prior art will cause the temperature of the controller to be unstable when operating in different environments, which ultimately leads to stable working reliability. Summary of the invention

[0007] In view of the defects existing in the prior art, the purpose of the present invention is to provide a chassis controller mounting device and a heat dissipation method, which can solve the problem in the prior art that the rotation speed of the radiator is only high speed or low speed, which will cause uneven heat dissipation of the chassis controller, thereby causing unstable temperature of the chassis controller and making its working performance unreliable.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0009] In one aspect, the present invention provides a chassis controller installation device, characterized in that it comprises:

[0010] A controller box, which is used to be arranged on the chassis to install a chassis controller;

[0011] a radiator, which is arranged in the controller box and is used to discharge heat in the controller box (1);

[0012] An altitude sensor and a temperature sensor, which are used to obtain the altitude of the vehicle and the ambient temperature of the chassis controller respectively;

[0013] A heat dissipation controller is used to control the power of the radiator according to the altitude of the vehicle and the temperature in the controller box.

[0014] In some optional solutions, the controller box includes a bottom frame and a cover disposed thereon, wherein the bottom frame and the cover are hinged at one end and connected by a lock at the other end.

[0015] In some optional solutions, the cover is provided with folded edges extending toward the bottom frame around the periphery, and the cover is arranged on the outer side of the bottom frame.

[0016] In some optional solutions, an active air intake grille is provided on the windward side of the controller box.

[0017] On the other hand, the present invention also provides a chassis controller heat dissipation method, which is implemented using the above controller installation device and includes the following steps:

[0018] Obtain the altitude of the vehicle, the ambient temperature of the chassis controller, and the driving speed of the vehicle;

[0019] Determine the radiator speed according to the altitude, ambient temperature and driving speed.

[0020] In some optional solutions, determining the rotation speed of the radiator according to the altitude, ambient temperature and driving speed includes:

[0021] Determine the required heat dissipation of the chassis controller based on altitude, ambient temperature and driving speed;

[0022] Determine the speed of the radiator based on the heat dissipation required by the chassis controller.

[0023] In some optional solutions, determining the heat dissipation required by the chassis controller according to the altitude, ambient temperature and driving speed includes:

[0024] According to the formula: Q = (0.05*△P / (△T*(1-△H / 100*K))*J, determine the heat dissipation Q required by the chassis controller;

[0025] Among them, △P=P1+P2, P1 is the real-time power of the chassis controller, P2 is the real-time power of the heat dissipation, △T=T1-T2, T1 is the maximum operating temperature of the chassis controller, T2 is the current ambient temperature, △H=H-500, H is the local altitude, K is the altitude compensation coefficient, and J is the vehicle speed drive coefficient.

[0026] In some optional schemes, when the local altitude H is H<500m, the value of the altitude compensation coefficient K is 0%; when the local altitude H is 500m≤H≤1000m, the value of the altitude compensation coefficient is K=0.20%; when the local altitude H is 1000m<H≤2000m, the value of the altitude compensation coefficient is K=0.31%; when the local altitude H is 2000m<H≤3000m, the value of the altitude compensation coefficient is K=0.43%; when the local altitude H is H>3000m, the value of the altitude compensation coefficient is K=0.60%.

[0027] In some optional schemes, when the real-time vehicle speed S is 0km / h≤S≤75km / h, the value of the vehicle speed driving coefficient is J=1; when the real-time vehicle speed S is S>75km / h, the value of the vehicle speed driving coefficient is J=0.

[0028] In some optional solutions, determining the rotation speed of the radiator according to the heat dissipation required by the chassis controller includes:

[0029] According to the formula: n = Q / (ρ×Cp×Δt*D3*R), determine the speed n of the radiator, where Q is the heat dissipation required by the chassis controller, ρ is the density of the air, Cp is the specific heat of the air, Δt is the temperature difference between the cold air at the inlet and the hot air at the outlet, D is the fan diameter, and R is the efficiency coefficient.

[0030] Compared with the prior art, the advantages of the present invention are: the controller box is installed on the chassis, and the chassis controller is installed in the controller box, and the altitude of the vehicle and the ambient temperature of the chassis controller are obtained through the altitude sensor and the temperature sensor, and the driving speed of the vehicle is obtained; the rotation speed of the radiator is determined according to the altitude, ambient temperature and driving speed. This method can achieve more accurate heat dissipation of the chassis controller, avoiding the problem in the prior art that the rotation speed of the radiator is only high speed or low speed, which will lead to uneven heat dissipation of the chassis controller, thereby causing unstable temperature of the chassis controller and unreliable working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a chassis controller installation device according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the top view of the chassis controller installation device in an embodiment of the present invention;

[0034] Figure 3 The figure is a flow chart of a chassis controller heat dissipation method according to an embodiment of the present invention.

[0035] In the figure: 1. controller box; 11. bottom frame; 12. cover; 13. lock; 14. folded edge; 15. active air intake grille; 16. convection grille; 17. air outlet; 2. radiator; 3. bracket. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 and Figure 2 As shown, on the one hand, the present invention provides a chassis controller installation device, including: a controller box 1, a radiator 2, an altitude sensor and a temperature sensor and a heat dissipation controller.

[0039] Among them, the controller box 1 is used to be set on the chassis to install the chassis controller; the radiator 2 is arranged in the controller box 1 to discharge the heat in the controller box 1; the altitude sensor and the temperature sensor are used to obtain the altitude of the vehicle and the ambient temperature of the chassis controller respectively; the heat dissipation controller is used to control the power of the radiator 2 according to the altitude of the vehicle and the temperature in the controller box 1.

[0040] In this solution, the controller box 1 is installed on the chassis, and the chassis controller is installed in the controller box 1. The altitude of the vehicle and the ambient temperature of the chassis controller are obtained through the altitude sensor and the temperature sensor, and the driving speed of the vehicle is obtained; the rotation speed of the radiator 2 is determined according to the altitude, ambient temperature and driving speed. This method can achieve more accurate heat dissipation of the chassis controller, avoiding the problem in the prior art that the rotation speed of the radiator 2 is only high or low, which will lead to uneven heat dissipation of the chassis controller, thereby causing unstable temperature of the chassis controller and unreliable working performance.

[0041] In some optional embodiments, the controller box 1 includes a base frame 11 and a cover 12 disposed thereon, wherein the base frame 11 and the cover 12 are hinged at one end and connected by a lock 13 at the other end.

[0042] In this embodiment, the bottom frame 11 and the cover 12 provided thereon are connected at one end by a hinge, and at the other end by a lock 13. The cover 12 can be opened directly by unlocking the lock 13, and then the chassis controller and the radiator 2 in the controller box 1 can be inspected. In other embodiments, other forms of radiators 2 can also be used, as long as the chassis controller and the radiator 2 can be installed and a certain sealing performance can be maintained.

[0043] In some optional embodiments, the cover 12 is provided with folded edges 14 extending toward the bottom frame 11 around the periphery, and is covered on the outer side of the bottom frame 11 .

[0044] In this embodiment, a folded edge 14 extending toward the bottom frame 11 is arranged around the cover 12 and is covered on the outer side of the bottom frame 11, so as to prevent water on the cover 12 from entering the controller box 1 and affecting the chassis controller and the radiator 2 in the controller box 1, thereby causing damage to the chassis controller or the radiator 2.

[0045] In some optional embodiments, an active air intake grille 15 is provided on the windward side of the controller box 1 .

[0046] In this embodiment, the active air intake grille 15 can introduce cold air from the outside into the controller box 1, which is beneficial to cooling the chassis controller. In addition, a driving device for the air intake grille is also provided in the controller box 1, which can actively open or close the air intake grille. Generally, the active air intake grille 15 is activated only when the vehicle speed is greater than a set condition. When the vehicle speed is greater than a certain condition, the active air intake grille 15 can be opened, the radiator 2 can be closed, and the outside cold air can be blown into the controller box 1 to cool the chassis controller.

[0047] In addition, in this embodiment, the radiator 2 is a fan, which is fixed to the bottom plate of the bottom frame 11 by bolts. A normally open convection grille 16 is provided at the position where the radiator is installed on the bottom plate, and an air outlet 17 is provided on the outside of the bottom frame 11. The hot air generated by the chassis controller can be discharged from the air outlet 17, and the power line or control signal line can be connected to the controller box 1.

[0048] like Figure 3 As shown, when the radiator 2 is used to dissipate heat and cool the chassis controller, the convection grille 16 serves as an air intake grille. At this time, the active air intake grille arranged on the windward side of the controller box 1 is closed, and the radiator 2 inhales cold air from the outside through the convection grille 16 arranged on the bottom plate to dissipate heat and cool the chassis controller in the controller box 1, and then discharges the hot air generated by the chassis controller from the side air outlet 17.

[0049] When the vehicle speed reaches a certain speed, the active air intake grille 15 is used to introduce cold air to dissipate heat and cool down the chassis controller. At this time, the active air intake grille 15 can be opened to introduce cold air from the outside into the controller box 1, and the cold air introduced by the active air intake grille 15 is used to dissipate heat and cool down the chassis controller. The convection grille 16 and the air outlet 17 on the side of the controller box 1 are both used as exhaust ports. The cold air from the outside enters the controller box 1 from the active air intake grille 15 to dissipate heat and cool down the chassis controller in the controller box 1, and then the hot air generated by the chassis controller is discharged from the convection grille and the air outlet 17 on the side of the controller box 1.

[0050] Two "X"-shaped brackets 3 are arranged on both sides of the fan. The brackets 3 are used to install the chassis controller, so that the chassis controller is installed above the radiator 2, and the radiator 2 and the chassis controller remain vertically opposite. When the vehicle is going uphill, downhill, or jumping, the radiator 2 and the chassis controller maintain a constant relative position. The fan always blows air directly toward the chassis controller to dissipate heat. In addition, the surface of the bracket 3 has a rubber layer, and the chassis controller is installed on the rubber layer, which can be used for shock absorption. The chassis controller can have a frequency deviation of less than 2.8Hz and a vibration acceleration transmission rate of less than 30%, which is conducive to creating a good chassis controller use environment.

[0051] The altitude sensor can be installed in the controller box 1 or in other locations of the vehicle as long as it can obtain the altitude data. The temperature sensor needs to be installed in the controller box 1 to obtain the ambient temperature of the chassis controller in the controller box 1.

[0052] The specific control strategy of the device is: use the altitude sensor installed in the controller box 1 or installed in other positions of the vehicle to obtain the altitude of the vehicle, and use the temperature sensor installed in the controller box 1 to obtain the ambient temperature of the chassis controller in the controller box 1. In addition, the vehicle's current speed is obtained from the vehicle controller or other sensors and detection devices.

[0053] According to the altitude, ambient temperature and driving speed, the heat dissipation required by the chassis controller is determined. Specifically, according to the formula: Q = (0.05*△P / △T*1-△H / 100*K*J, the heat dissipation Q required by the chassis controller is determined; wherein, △P = P1 + P2, P1 is the real-time power of the chassis controller, P2 is the real-time power of the heat dissipation, △T = T1-T2, T1 is the maximum operating temperature of the chassis controller, T2 is the current ambient temperature, △H = H-500, H is the local altitude, K is the altitude compensation coefficient, and J is the vehicle speed driving coefficient. When the local altitude H is H < 500m, the altitude compensation coefficient K is 0% ; When the local altitude H is 500m≤H≤1000m, the altitude compensation coefficient is K=0.20%; when the local altitude H is 1000m<H≤2000m, the altitude compensation coefficient is K=0.31%; when the local altitude H is 2000m<H≤3000m, the altitude compensation coefficient is K=0.43%; when the local altitude H is H>3000m, the altitude compensation coefficient is K=0.60%. When the real-time vehicle speed S is 0km / h≤S≤75km / h, the vehicle speed driving coefficient is J=1; when the real-time vehicle speed S is S>75km / h, the vehicle speed driving coefficient is J=0.

[0054] According to the heat dissipation required by the chassis controller, the rotation speed of the radiator 2 is determined, including: according to the formula: n = Q / ρ×Cp×Δt*D3*R, the rotation speed n of the radiator 2 is determined, where Q is the heat dissipation required by the chassis controller, ρ is the density of the air, Cp is the specific heat of the air, Δt is the temperature difference between the cold air at the inlet and the hot air at the outlet, D is the fan diameter, and R is the efficiency coefficient. The density ρ of the air can be calculated based on the altitude and temperature, and the specific heat of the air is obtained by calibration under the temperature and pressure line. When in use, it is obtained by interpolation according to the interpolation method.

[0055] See again Figures 1 to 3 As shown, on the other hand, the present invention also provides a chassis controller heat dissipation method, which is implemented using the above controller installation device and includes the following steps:

[0056] S1: Obtain the altitude of the vehicle, the ambient temperature of the chassis controller, and the driving speed of the vehicle.

[0057] In this embodiment, the altitude of the vehicle is obtained by using an altitude sensor installed in the controller box 1 or in other locations of the vehicle, and the ambient temperature of the chassis controller in the controller box 1 is obtained by using a temperature sensor installed in the controller box 1. In addition, the speed of the vehicle is obtained from the vehicle controller or other sensors and detection devices.

[0058] S2: Determine the rotation speed of radiator 2 according to the altitude, ambient temperature and driving speed.

[0059] In this embodiment, in order to achieve precise control of the radiator 2, that is, the fan, the heat dissipation required by the chassis controller must first be accurately calculated based on the altitude, temperature and vehicle speed, so as to achieve precise control of the radiator 2, that is, the fan.

[0060] Therefore, step S2 includes the following steps:

[0061] S21: Determine the heat dissipation required by the chassis controller based on the altitude, ambient temperature and driving speed.

[0062] The operating temperature of the chassis controller is processed. The higher the temperature, the greater the required heat dissipation. Usually, the maximum operating temperature of the chassis controller is T1 = 85°C. In this example, the maximum operating temperature T1 of the chassis controller is obtained by calibrating the vehicle offline. Too high a temperature will affect the performance of the chassis controller. The higher the current ambient temperature T2, the greater the required heat dissipation. That is, the required heat dissipation temperature △T = T1-T2.

[0063] Since the air density is different at different altitudes, the impact of different altitudes on heat dissipation capacity is calculated based on the altitude information, and heat dissipation compensation is also required. Generally, the higher the altitude, the greater the impact on heat dissipation capacity, and the more obvious the impact trend. In order to achieve precise control, the compensation coefficient is defined differently according to the altitude, and compensation is made for every 100 meters increase in altitude.

[0064] When the vehicle speed is too high, the heat dissipation effect will be significantly reduced if the fan speed is increased alone. In the prior art, this is usually achieved by increasing the fan diameter. However, the controller and the control box are arranged in the controller box 1 on the chassis, and the wind generated by the high vehicle speed can be used to dissipate heat. In this method, when the vehicle speed reaches a certain speed, the fan can be turned off, and the active air intake grille 15 of the controller box 1 can be opened by using the driving device of the air intake grille, and the wind enters the control box to dissipate heat for the chassis controller.

[0065] Based on the above analysis, in some optional embodiments, the heat dissipation required by the chassis controller is determined according to the altitude, ambient temperature and driving speed, including the following steps:

[0066] According to the formula: Q = (0.05*△P / △T*1-△H / 100*K*J, determine the heat dissipation Q required by the chassis controller;

[0067] Among them, △P=P1+P2, P1 is the real-time power of the chassis controller, P2 is the real-time power of the heat dissipation, △T=T1-T2, T1 is the maximum operating temperature of the chassis controller, T2 is the current ambient temperature, △H=H-500, H is the local altitude, K is the altitude compensation coefficient, and J is the vehicle speed drive coefficient.

[0068] In some optional embodiments, in order to achieve precise control, the compensation coefficient is defined differently according to the altitude, and the altitude is compensated for every 100 meters increase, as shown in the following table:

[0069] altitude Altitude compensation factor K H<500m K＝0％ 500m≤H≤1000m K＝0.20％ 1000m<H≤2000m K＝0.31％ 2000m<H≤3000m K＝0.43％ H>3000m K＝0.60％

[0070] It can be seen from the above table that when the local altitude H is H<500m, the value of the altitude compensation coefficient K is 0%; when the local altitude H is 500m≤H≤1000m, the value of the altitude compensation coefficient is K=0.20%; when the local altitude H is 1000m<H≤2000m, the value of the altitude compensation coefficient is K=0.31%; when the local altitude H is 2000m<H≤3000m, the value of the altitude compensation coefficient is K=0.43%; when the local altitude H is H>3000m, the value of the altitude compensation coefficient is K=0.60%.

[0071] In some optional embodiments, when the vehicle speed reaches a certain speed, the fan can be turned off, and the air intake grille of the controller box 1 can be opened by using the driving device of the air intake grille, so that wind enters the control box to dissipate heat for the chassis controller.

[0072] Specifically, the relationship between vehicle speed and drive system parameters is shown in the following table:

[0073] Current vehicle speed (S) Vehicle speed driving coefficient J 0km / h≤S≤75km / h J＝1 S>75km / h J＝0

[0074] It can be seen from the above table that when the real-time vehicle speed S is 0km / h≤S≤75km / h, the value of the vehicle speed driving coefficient is J=1; when the real-time vehicle speed S is S>75km / h, the value of the vehicle speed driving coefficient is J=0.

[0075] S22: Determine the rotation speed of the radiator 2 according to the heat dissipation required by the chassis controller.

[0076] In this embodiment, the heat dissipation required by the chassis controller is obtained, and the rotation speed of the radiator only needs to be controlled according to the heat dissipation efficiency of the radiator, so that the heat dissipation efficiency of the radiator meets the heat dissipation required by the chassis controller.

[0077] In this example, the rotation speed of the radiator 2 is determined according to the heat dissipation required by the chassis controller, including:

[0078] The rotation speed n of the radiator 2 is determined according to the formula: n=Q / ρ×Cp×Δt*D3*R, where Q is the heat dissipation required by the chassis controller, ρ is the density of the air, Cp is the specific heat of the air, Δt is the temperature difference between the cold air at the inlet and the hot air at the outlet, D is the fan diameter, and R is the efficiency coefficient.

[0079] In this example, the density ρ of the air can be calculated based on the altitude and temperature, and the specific heat of the air is obtained by calibration under the temperature and pressure line. When used, it is obtained by interpolation according to the interpolation method.

[0080] When the radiator 2 is used to dissipate heat and cool the chassis controller, the convection grille 16 serves as an air intake grille. At this time, the active air intake grille arranged on the windward side of the controller box 1 is closed, and the radiator 2 inhales cold air from the outside through the convection grille 16 arranged on the bottom plate to dissipate heat and cool the chassis controller in the controller box 1, and then discharges the hot air generated by the chassis controller from the side air outlet 17.

[0081] Therefore, Δt is the temperature difference between the cold air at the inlet and the hot air at the outlet, the cold air at the inlet is the temperature of the normally open convection grille 16 corresponding to the radiator installed on the bottom plate of the bottom frame 11, and the temperature of the hot air at the outlet is the temperature at the side air outlet 17. By setting a temperature sensor at the convection grille 16, the temperature of the cold air at the inlet can be obtained, and by setting another temperature sensor at the side air outlet 17, the temperature of the hot air at the outlet can be obtained.

[0082] In summary, when using the chassis controller installation device and the heat dissipation method, the radiator 2 is installed above the convection grille 16 set on the bottom frame 11 of the controller box 1 by bolts, two "X"-shaped brackets 3 are installed on both sides of the radiator 2, and the chassis controller is installed on the brackets 3, so that the chassis controller is installed above the radiator 2, and the radiator 2 and the chassis controller remain vertically opposite. When the vehicle is going uphill, downhill, or jumping, the radiator 2 and the chassis controller maintain the same relative position. The fan always blows air directly towards the chassis controller to dissipate heat. In addition, the surface of the bracket 3 has a rubber layer, and the chassis controller is installed on the rubber layer, which can be used for shock absorption. The chassis controller can be made to have a frequency deviation of less than 2.8Hz and a vibration acceleration transmission rate of less than 30%, which is conducive to creating a good chassis controller use environment.

[0083] When the vehicle speed is too high, the heat dissipation effect will be significantly reduced if the fan speed is increased alone. In the prior art, this is usually achieved by increasing the fan diameter. However, the controller and control box are arranged in the controller box 1 on the chassis, and the wind generated by the high vehicle speed can be used for heat dissipation. Specifically,

[0084] When the vehicle speed is less than a certain speed, the radiator 2 is used to dissipate heat and cool the chassis controller. At this time, the convection grille 16 serves as an air intake grille, and the active air intake grille arranged on the windward side of the controller box 1 is closed. The radiator 2 inhales cold air from the outside through the convection grille 16 arranged on the bottom plate, dissipates heat and cools the chassis controller in the controller box 1, and then discharges the hot air generated by the chassis controller from the side air outlet 17.

[0085] When the vehicle speed reaches a certain speed, the active air intake grille 15 is used to introduce cold air to dissipate heat and cool down the chassis controller. At this time, the active air intake grille 15 can be opened to introduce cold air from the outside into the controller box 1, and the cold air introduced by the active air intake grille 15 is used to dissipate heat and cool down the chassis controller. The convection grille 16 and the air outlet 17 on the side of the controller box 1 are both used as exhaust ports. The cold air from the outside enters the controller box 1 from the active air intake grille 15 to dissipate heat and cool down the chassis controller in the controller box 1, and then the hot air generated by the chassis controller is discharged from the convection grille and the air outlet 17 on the side of the controller box 1.

[0086] The control strategy for cooling the chassis controller using radiator 2 is as follows:

[0087] The altitude of the vehicle is obtained by using an altitude sensor installed in the controller box 1 or in other locations of the vehicle, and the ambient temperature of the chassis controller in the controller box 1 is obtained by using a temperature sensor installed in the controller box 1. In addition, the speed of the vehicle is obtained from the vehicle controller or other sensors and detection devices.

[0088] According to the altitude, ambient temperature and driving speed, the heat dissipation required by the chassis controller is determined. Specifically, according to the formula: Q = (0.05*△P / △T*1-△H / 100*K*J, the heat dissipation Q required by the chassis controller is determined; wherein, △P = P1 + P2, P1 is the real-time power of the chassis controller, P2 is the real-time power of the heat dissipation, △T = T1-T2, T1 is the maximum operating temperature of the chassis controller, T2 is the current ambient temperature, △H = H-500, H is the local altitude, K is the altitude compensation coefficient, and J is the vehicle speed driving coefficient. When the local altitude H is H < 500m, the altitude compensation coefficient K is 0% ; When the local altitude H is 500m≤H≤1000m, the altitude compensation coefficient is K=0.20%; when the local altitude H is 1000m<H≤2000m, the altitude compensation coefficient is K=0.31%; when the local altitude H is 2000m<H≤3000m, the altitude compensation coefficient is K=0.43%; when the local altitude H is H>3000m, the altitude compensation coefficient is K=0.60%. When the real-time vehicle speed S is 0km / h≤S≤75km / h, the vehicle speed driving coefficient is J=1; when the real-time vehicle speed S is S>75km / h, the vehicle speed driving coefficient is J=0.

[0089] According to the heat dissipation required by the chassis controller, the rotation speed of the radiator 2 is determined, including: according to the formula: n = Q / ρ×Cp×Δt*D3*R, the rotation speed n of the radiator 2 is determined, where Q is the heat dissipation required by the chassis controller, ρ is the density of the air, Cp is the specific heat of the air, Δt is the temperature difference between the cold air at the inlet and the hot air at the outlet, D is the fan diameter, and R is the efficiency coefficient. The density ρ of the air can be calculated based on the altitude and temperature, and the specific heat of the air is obtained by calibration under the temperature and pressure line. When in use, it is obtained by interpolation according to the interpolation method.

[0090] The above method takes into account the altitude of the vehicle's driving position, the ambient temperature of the chassis controller and the driving speed, and can achieve more accurate heat dissipation of the chassis controller, avoiding the problem in the prior art that the rotation speed of the radiator 2 is only high speed or low speed, which will cause uneven heat dissipation of the chassis controller, thereby causing the chassis controller temperature to be unstable and its working performance to be unreliable.

[0091] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0092] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0093] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A chassis controller installation device, characterized in that: include: A controller box (1) is used to be arranged on a chassis to install a chassis controller; A radiator (2), which is arranged in the controller box (1) and is used to discharge heat in the controller box (1); An altitude sensor and a temperature sensor, which are used to obtain the altitude of the vehicle and the ambient temperature of the chassis controller respectively; A heat dissipation controller, which is used to control the power of the radiator (2) according to the altitude of the vehicle and the temperature in the controller box (1); The controller box (1) comprises a bottom frame (11) and a cover (12) arranged thereon, wherein the bottom frame (11) and the cover (12) are hinged at one end and connected at the other end via a lock (13); An active air intake grille (15) is provided on the windward side of the controller box (1); A normally open convection grille (16) is provided on the bottom plate of the bottom frame (11) at a position where the radiator (2) is installed; An air outlet (17) is provided on the outer side of the bottom frame (11); When the radiator (2) is used to dissipate heat and cool the chassis controller, the radiator (2) draws in cold air through the convection grille (16), and the air outlet (17) discharges hot air generated by the chassis controller; When the vehicle speed reaches a certain speed, the active air intake grille (15) opens, the active air intake grille (15) introduces cold air, and the convection grille (16) and the air outlet (17) both serve as air outlets to discharge hot air generated by the chassis controller.

2. The chassis controller mounting device according to claim 1, characterized in that: The cover (12) is provided with folded edges (14) extending toward the bottom frame (11) around its periphery and is arranged on the outside of the bottom frame (11).

3. A chassis controller heat dissipation method, characterized in that: The method of implementing the chassis controller installation device according to claim 1 comprises the following steps: Obtain the altitude of the vehicle, the ambient temperature of the chassis controller, and the driving speed of the vehicle; The rotation speed of the radiator (2) is determined according to the altitude, ambient temperature and driving speed.

4. The chassis controller heat dissipation method according to claim 3, characterized in that: The method of determining the rotation speed of the radiator (2) according to the altitude, the ambient temperature and the driving speed includes: Determine the required heat dissipation of the chassis controller based on altitude, ambient temperature and driving speed; The rotation speed of the radiator (2) is determined according to the heat dissipation required by the chassis controller.

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