A cooling system and control method based on working condition identification

Abstract

The present invention discloses a cooling system and control method based on working condition identification, including: a driving component, a ventilation component and a monitoring and control component. The driving component includes an engine, a silicone oil clutch, a plunger pump, a plunger motor and a hydraulic oil tank; the silicone oil clutch is electrically connected to the vehicle controller; the ventilation component includes a fan and a converter cabinet, the fan is installed on the side of the converter cabinet to absorb air and heat from the converter cabinet; the plunger motor is connected to the fan in a transmission manner; the monitoring and control component includes a converter cabinet temperature sensor, and the converter cabinet temperature sensor is electrically connected to the vehicle controller. By utilizing the engine to provide driving force, and using the silicone oil clutch, the plunger pump and the plunger motor to deliver the driving force to the fan to drive the fan to operate, the advantage is that there is no need to set up a separate driving motor, which can significantly reduce the overall volume of the heat dissipation device and reduce the occupation of the installation space by the heat dissipation device, solving the problem of the difficulty and inability to install traditional heat dissipation devices.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling systems, and in particular to a cooling system and a control method based on working condition identification. Background Art

[0002] The converter cabinet of the electric drive dump truck is responsible for the tasks of rectification and inversion, and has the characteristics of large heat dissipation power and high air outlet temperature. Therefore, a heat dissipation device is required to dissipate the heat for the converter cabinet.

[0003] The heat dissipation device used in the existing converter cabinet is an independent fan or a fan provided by the generator. Although these two heat dissipation devices can effectively dissipate the heat of the converter cabinet, they are large in size and occupy a lot of space. They are very difficult to arrange in vehicles with small spaces. In addition, the independently arranged heat dissipation device also has the problem of high heat dissipation noise, which affects the driving comfort of the driver. Summary of the invention

[0004] In view of this, the present invention provides a cooling system based on working condition identification, which can better dissipate heat for the converter cabinet while reducing space occupation.

[0005] To achieve the above object, the present invention provides the following technical solutions: A cooling system based on working condition identification includes: a driving component, a ventilation component and a monitoring and control component.

[0006] Among them, the driving component includes an engine, a silicone oil clutch, a plunger pump, a plunger motor and a hydraulic oil tank. The engine is connected to the plunger pump through a silicone oil clutch, the plunger pump is connected to the hydraulic oil tank through a first oil pipe and to the plunger motor through a second oil pipe, and the plunger motor is connected to the hydraulic oil tank through a third oil pipe; the silicone oil clutch is electrically connected to the vehicle controller; the ventilation component includes a fan and a converter cabinet, the fan is installed on the side of the converter cabinet, and the impeller of the fan is facing the converter cabinet to absorb air and heat from the converter cabinet; the plunger motor is connected to the fan through a transmission connection; the monitoring and control component includes a converter cabinet temperature sensor, and the converter cabinet temperature sensor is electrically connected to the vehicle controller.

[0007] Preferably, the ventilation assembly further includes a cab and a ventilation hose, the cab being provided with a cab air inlet, one end of the ventilation hose being connected to the cab air inlet, and the other end being connected to an internal air duct of the fan.

[0008] Preferably, the ventilation assembly further includes a filter, and the ventilation hose is connected to the air inlet of the cab through the filter.

[0009] Preferably, the monitoring and control component also includes a fan speed sensor and a cab air inlet temperature sensor, and the fan speed sensor and the cab air inlet temperature sensor are both electrically connected to the vehicle controller; an opening and closing mechanism is provided at the cab air inlet, and the opening and closing mechanism is used to control the opening and closing of the cab air inlet, and the opening and closing mechanism is electrically connected to the vehicle controller.

[0010] Preferably, the plunger pump is connected to the hydraulic oil tank via a first oil drain pipeline, and the plunger motor is connected to the hydraulic oil tank via a second oil drain pipeline, and pressure relief valves are provided on both the first oil drain pipeline and the second oil drain pipeline.

[0011] Preferably, the fan includes an impeller, a casing, a noise reduction module, an air intake port and an air outlet, the air outlet is opened at the upper part of the casing, and the noise reduction module is arranged near the air outlet; the air intake port is opened on the side of the casing facing the converter cabinet, and the impeller is located in the casing and installed at the air intake port.

[0012] Preferably, the noise reduction module comprises a sound absorbing member and a honeycomb panel, and the sound absorbing member and the honeycomb panel are both arranged inside the casing and are both located near the air outlet.

[0013] The present invention also proposes a control method for a cooling system based on working condition identification, which is applied to the above-mentioned cooling system based on working condition identification, including: the vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and judges whether to close the silicone oil clutch according to the converter cabinet temperature value; the vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and judges whether to open the opening and closing mechanism according to the fan speed value and the cab air inlet temperature value.

[0014] Preferably, the specific content of the vehicle controller judging whether to close the silicone oil clutch includes: the vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and judges whether the temperature value of the converter cabinet is greater than the preset converter cabinet temperature threshold in the vehicle controller; when the converter cabinet temperature value is greater than the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch to close to drive the plunger pump to work; when the converter cabinet temperature value is less than or equal to the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch to disconnect to stop the plunger pump from working.

[0015] Preferably, the specific content of the vehicle controller judging whether to open the opening and closing mechanism includes: the vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and judges whether the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold in the vehicle controller; when the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold, the vehicle controller controls the opening and closing mechanism at the cab air inlet to open; when any one of the fan speed value and the cab air inlet temperature value is less than or equal to the corresponding preset threshold, the vehicle controller controls the opening and closing mechanism at the cab air inlet to close.

[0016] The beneficial effects of the present invention are as follows: compared with the prior art, a cooling system based on working condition identification disclosed in the present application utilizes the engine to provide driving force, and uses a silicone oil clutch, a plunger pump and a plunger motor to transmit the driving force to the fan to drive the fan to operate. The advantage of this is that there is no need to set up a separate drive motor, which can significantly reduce the overall volume of the heat dissipation device and reduce the installation space occupied by the heat dissipation device, so that vehicles with limited space can also be easily installed, solving the problem of difficult and impossible installation of traditional heat dissipation devices.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a cooling system based on working condition identification of the present invention; Figure 2 is a schematic diagram of a ventilation system of the present invention; Figure 3 It is a driving flow chart of the present invention; Figure 4 is a flow chart of the ventilation system of the present invention; Figure 5 It is the drive control logic diagram of the present invention; Figure 6 It is a control logic diagram of the ventilation system of the present invention. Attached photos

[0019] 1. Engine; 2. Silicone oil clutch; 3. Plunger pump; 4. Plunger motor; 5. Hydraulic oil tank; 6. Fan; 61. Impeller; 62. Casing; 63. Noise reduction module; 64. Air inlet; 65. Air outlet; 631. Sound absorbing component; 632. Honeycomb panel; 7. Cab; 8. Ventilation hose; 9. Filter; 10. First oil pipe; 11. Second oil pipe; 12. Third oil pipe; 13. First oil drain pipeline; 14. Second oil drain pipeline. DETAILED DESCRIPTION

[0020] The invention discloses a cooling system based on working condition identification, which can better dissipate heat for a converter cabinet and reduce space occupation.

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Reference below Figures 1 to 6 A cooling system based on operating condition identification in an embodiment of the present invention is described.

[0024] An embodiment of the present application discloses a cooling system based on working condition identification, including: a driving component, a ventilation component and a monitoring and control component.

[0025] Among them, the driving component includes an engine 1, a silicone oil clutch 2, a plunger pump 3, a plunger motor 4 and a hydraulic oil tank 5. The engine 1 is connected to the plunger pump 3 through the silicone oil clutch 2. The plunger pump 3 is connected to the hydraulic oil tank 5 through a first oil pipe 10 and to the plunger motor 4 through a second oil pipe 11. The plunger motor 4 is connected to the hydraulic oil tank 5 through a third oil pipe 12; the silicone oil clutch 2 is electrically connected to the vehicle controller; the ventilation component includes a fan 6 and a converter cabinet, the fan 6 is installed on the side of the converter cabinet, and the impeller 61 of the fan 6 is facing the converter cabinet to absorb air and heat from the converter cabinet; the plunger motor 4 is connected to the fan 6 through a transmission connection; the monitoring and control component includes a converter cabinet temperature sensor, and the converter cabinet temperature sensor is electrically connected to the vehicle controller.

[0026] The traditional independent heat dissipation device is provided with an independent fan 6 and a driving motor for driving the fan 6 to operate, which requires a larger installation space during installation, making it difficult or impossible to install on some vehicles with narrow installation space. The heat dissipation device in this embodiment also uses the fan 6 to dissipate heat from the converter cabinet, but the difference is that the driving force of the fan 6 in this embodiment is provided by the engine 1, and the driving force is delivered to the fan 6 with the help of the silicone oil clutch 2, the plunger pump 3 and the plunger motor 4 to drive the fan 6 to operate. The advantage of this is that there is no need to set up a separate driving motor, which can significantly reduce the overall volume of the heat dissipation device and reduce the occupation of the installation space by the heat dissipation device, so that vehicles with narrow space can also be easily installed, solving the problem of difficult and impossible installation of traditional heat dissipation devices.

[0027] In addition, the cooling system in this embodiment is also provided with a monitoring and control component. The inverter cabinet temperature sensor in the monitoring and control component can monitor the temperature of the inverter cabinet in real time, and feed back the monitored temperature data to the vehicle controller in real time. The vehicle controller can determine whether the current inverter cabinet needs heat dissipation based on the temperature data. If the current temperature of the inverter cabinet exceeds the inverter cabinet temperature threshold preset in the vehicle controller, the vehicle controller will control the silicone oil clutch 2 to open to enable the fan 6 to run. In this way, the heat dissipation logic can be made more reasonable and the power consumption can be reduced.

[0028] In some embodiments, the ventilation assembly further includes a cab 7 and a ventilation hose 8. The cab 7 is provided with a cab air inlet. One end of the ventilation hose 8 is connected to the cab air inlet, and the other end is connected to the internal air duct of the fan 6. When the traditional fan 6 absorbs air and extracts heat from the converter cabinet, it will generate a large amount of warm air flow, and all of these warm air flows are directly discharged without secondary use, resulting in a large waste. In this embodiment, the ventilation hose 8 is provided to connect the cab air inlet with the internal air duct of the fan 6. In this way, when the warm air flow generated by the fan 6 is discharged to the outside through the internal air duct, a part of the warm air flow can enter the cab 7 through the ventilation hose 8 to perform auxiliary heating on the inside of the cab 7, thereby compensating for the insufficient heating power of the air conditioner in the cab 7 and improving the working environment of the driver.

[0029] Further, the ventilation assembly also includes a filter 9, and the ventilation hose 8 is connected to the air inlet of the cab through the filter 9. The filter 9 can filter the warm air flow to filter out impurities in the warm air flow, thereby ensuring that the air entering the cab 7 is clean.

[0030] Furthermore, the monitoring and control component also includes a fan speed sensor and a cab air inlet temperature sensor, and the fan speed sensor and the cab air inlet temperature sensor are both electrically connected to the vehicle controller; an opening and closing mechanism is provided at the cab air inlet, and the opening and closing mechanism is used to control the opening and closing of the cab air inlet, and the opening and closing mechanism is electrically connected to the vehicle controller. At the beginning of the fan 6 dissipating heat to the converter cabinet, the airflow temperature generated by the fan 6 is relatively low. If the generated airflow is directly delivered into the cab 7 at this time, it will have the opposite effect of lowering the temperature of the cab 7. Therefore, in this embodiment, the fan speed sensor and the cab air inlet temperature sensor are provided to control the delivery timing of the warm air flow to the cab 7, specifically: when the fan speed sensor detects that the speed of the fan 6 is greater than 0, and the temperature of the warm air flow in the ventilation hose 8 detected by the cab air inlet temperature sensor reaches the ventilation preset threshold value preset in the vehicle controller, the vehicle controller controls the opening and closing mechanism to open, otherwise, the opening and closing mechanism remains closed.

[0031] In some embodiments, the plunger pump 3 is connected to the hydraulic oil tank 5 through the first oil drain line 13, and the plunger motor 4 is connected to the hydraulic oil tank 5 through the second oil drain line 14. Pressure relief valves are provided on both the first oil drain line 13 and the second oil drain line 14. By providing the first oil drain line 13 and the second oil drain line 14, when the hydraulic pressure in the plunger pump 3 and the plunger motor 4 is too high, the hydraulic oil can flow back to the hydraulic oil tank 5 through the oil drain line to prevent the excessive hydraulic pressure from damaging the plunger pump 3 and the plunger motor 4, thereby ensuring the safety of the plunger pump 3 and the plunger motor 4.

[0032] In some embodiments, the fan 6 includes an impeller 61, a housing 62, a noise reduction module 63, an air inlet 64 and an air outlet 65. The air outlet 65 is provided at the upper part of the housing 62, and the noise reduction module 63 is provided near the air outlet 65; the air inlet 64 is provided on the side of the housing 62 facing the converter cabinet, and the impeller 61 is located in the housing 62 and installed at the air inlet 64. The traditional fan 6 will generate a large wind noise when working, and the fan 6 is close to the cab 7, and the large wind noise will affect the driving comfort of the driver. In this embodiment, by providing the noise reduction module 63 at the air outlet 65 of the fan 6, the wind noise generated by the fan 6 can be effectively reduced, thereby significantly improving the driving comfort of the driver.

[0033] Furthermore, the noise reduction module 63 includes a sound absorbing member 631 and a honeycomb panel 632 . The sound absorbing member 631 and the honeycomb panel 632 are both arranged inside the housing 62 and are both located near the air outlet 65 .

[0034] The present invention also proposes a control method for a cooling system based on working condition identification, which is applied to the above-mentioned cooling system based on working condition identification, including: the vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and judges whether to close the silicone oil clutch 2 according to the converter cabinet temperature value; the vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and judges whether to open the opening and closing mechanism according to the fan speed value and the cab air inlet temperature value.

[0035] In some embodiments, the specific content of the vehicle controller determining whether to close the silicone oil clutch 2 includes: the vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and determines whether the converter cabinet temperature value is greater than the preset converter cabinet temperature threshold in the vehicle controller; when the converter cabinet temperature value is greater than the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch 2 to close to drive the plunger pump 3 to work; when the converter cabinet temperature value is less than or equal to the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch 2 to disconnect to stop the plunger pump 3 from working.

[0036] In some embodiments, the specific content of the vehicle controller determining whether to open the opening and closing mechanism includes: the vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and determines whether the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold in the vehicle controller; when the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold, the vehicle controller controls the opening and closing mechanism at the cab air inlet to open; when any one of the fan speed value and the cab air inlet temperature value is less than or equal to the corresponding preset threshold, the vehicle controller controls the opening and closing mechanism at the cab air inlet to close.

[0037] Other structures and operations of the cooling system based on operating condition identification and the cooling system control method based on operating condition identification according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cooling system based on working condition identification, characterized in that: include: Drive components, ventilation components and monitoring and control components; The driving assembly includes an engine, a silicone oil clutch, a plunger pump, a plunger motor and a hydraulic oil tank. The engine is connected to the plunger pump through the silicone oil clutch, the plunger pump is connected to the hydraulic oil tank through a first oil pipe and connected to the plunger motor through a second oil pipe, and the plunger motor is connected to the hydraulic oil tank through a third oil pipe; the silicone oil clutch is electrically connected to the vehicle controller; The ventilation assembly includes a fan and a converter cabinet, wherein the fan is installed on the side of the converter cabinet, and the impeller of the fan faces the converter cabinet to absorb air and heat from the converter cabinet; the plunger motor is drivingly connected to the fan; The monitoring and control component includes a converter cabinet temperature sensor, and the converter cabinet temperature sensor is electrically connected to the vehicle controller.

2. The cooling system based on working condition identification according to claim 1, characterized in that: The ventilation assembly also includes a cab and a ventilation hose. The cab is provided with a cab air inlet. One end of the ventilation hose is connected to the cab air inlet, and the other end is connected to the internal air duct of the fan.

3. The cooling system based on working condition identification according to claim 2, characterized in that: The ventilation assembly also includes a filter, and the ventilation hose is connected to the air inlet of the cab through the filter.

4. The cooling system based on working condition identification according to claim 3, characterized in that: The monitoring and control component also includes a fan speed sensor and a cab air inlet temperature sensor, and the fan speed sensor and the cab air inlet temperature sensor are both electrically connected to the vehicle controller; An opening and closing mechanism is provided at the air inlet of the cab, and the opening and closing mechanism is used to control the opening and closing of the air inlet of the cab, and the opening and closing mechanism is electrically connected to the vehicle controller.

5. The cooling system based on working condition identification according to claim 1, characterized in that: The plunger pump is connected to the hydraulic oil tank via a first oil drain pipeline, and the plunger motor is connected to the hydraulic oil tank via a second oil drain pipeline. Pressure relief valves are provided on both the first oil drain pipeline and the second oil drain pipeline.

6. The cooling system based on working condition identification according to claim 1, characterized in that: The fan includes an impeller, a casing, a noise reduction module, an air suction port and an air outlet, wherein the air outlet is opened at the upper part of the casing, and the noise reduction module is arranged near the air outlet; the air suction port is opened on a side of the casing facing the converter cabinet, and the impeller is located in the casing and installed at the air suction port.

7. The cooling system based on working condition identification according to claim 6, characterized in that: The noise reduction module includes a sound absorbing member and a honeycomb panel, and the sound absorbing member and the honeycomb panel are both arranged inside the casing and are both located near the air outlet.

8. A control method for a cooling system based on working condition identification, characterized in that: A cooling system based on working condition identification applied to any one of claims 1 to 7, comprising: The vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and determines whether to close the silicone oil clutch according to the converter cabinet temperature value; The vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and determines whether to open the opening and closing mechanism based on the fan speed value and the cab air inlet temperature value.

9. The control method of the cooling system based on working condition identification according to claim 8, characterized in that: The specific contents of the vehicle controller to judge whether to close the silicone oil clutch include: The vehicle controller obtains the temperature value of the converter cabinet in real time through the converter cabinet temperature sensor, and determines whether the temperature value of the converter cabinet is greater than the preset converter cabinet temperature threshold in the vehicle controller; When the temperature value of the converter cabinet is greater than the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch to close to drive the plunger pump to work; When the temperature value of the converter cabinet is less than or equal to the preset converter cabinet temperature threshold, the vehicle controller controls the silicone oil clutch to disconnect to stop the plunger pump.

10. The control method of the cooling system based on working condition identification according to claim 8, characterized in that: The specific contents of the vehicle controller judging whether to open the opening and closing mechanism include: The vehicle controller obtains the fan speed value and the cab air inlet temperature value in real time through the fan speed sensor and the cab air inlet sensor respectively, and determines whether the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold in the vehicle controller; When the fan speed value and the cab air inlet temperature value are respectively greater than the preset fan speed threshold and the cab air inlet temperature threshold, the vehicle controller controls the opening and closing mechanism at the cab air inlet to open; When any one of the fan speed value and the cab air inlet temperature value is less than or equal to the corresponding preset threshold value, the vehicle controller controls the opening and closing mechanism at the cab air inlet to close.

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