Pure electric mine car and control system and method for reducing energy consumption of radiator of pure electric mine car

Abstract

The invention discloses a pure electric mine car and a control system and method for reducing energy consumption of a radiator of the pure electric mine car. A temperature acquisition unit is electrically connected with a vehicle control unit and used for monitoring the environment temperature in real time and transmitting the environment temperature to the vehicle control unit; the vibration acquisition unit is electrically connected with the vehicle control unit and is used for monitoring acceleration data in three directions of a vehicle body in real time and transmitting the acceleration data to the vehicle control unit; the battery management system is electrically connected with the vehicle control unit and used for monitoring the electric quantity of a battery in real time and transmitting the electric quantity to the vehicle control unit. The heat management system comprises a radiator composed of a cooling fan and a cooling water pump, the radiator is electrically connected with the vehicle control unit, and the rotating speed of the cooling fan and the power of the cooling water pump are dynamically adjusted through the vehicle control unit. The instrument is electrically connected with the vehicle control unit and used for displaying alarm information. Relevant data of environment temperature, battery electric quantity and vehicle vibration are collected in real time, a heat dissipation parameter model calibrated through a pre-experiment is combined, the rotating speed of the fan and the power of the water pump are dynamically adjusted, and balance of efficient heat dissipation and energy consumption optimization is achieved.

Description

Technical Field

[0001] The present invention relates to a control system and method for reducing energy consumption of a pure electric mining car radiator, belonging to the technical field of pure electric mining cars. Background Art

[0002] Lightweight mining dump trucks are a key piece of equipment used in earthwork construction and open-pit mines. With the continuous development of new energy technologies and the pursuit of green mining and mine construction, pure electric mining dump trucks have emerged. As a key component of pure electric mining trucks, thermal management systems are responsible for thermal management of the battery, motor, and braking systems, crucial to driving safety. Traditional cooling systems, however, utilize fixed speed control, which can lead to high energy consumption and delayed response times. Summary of the Invention

[0003] In response to the heat dissipation needs of pure electric mining cars, the present invention provides a control system and method for reducing the energy consumption of pure electric mining car radiators. By real-time collection of ambient temperature, battery power and vehicle vibration-related data, combined with a pre-experimentally calibrated heat dissipation parameter model, the fan speed and water pump power are dynamically adjusted to achieve a balance between efficient heat dissipation and energy consumption optimization.

[0004] The present invention is achieved according to the following technical solutions:

[0005] In a first aspect, the present invention provides a control system for reducing energy consumption of a pure electric mining car radiator, comprising:

[0006] Vehicle controller;

[0007] A temperature acquisition unit is electrically connected to the input terminal of the vehicle controller and is used to monitor the ambient temperature in real time and transmit it to the vehicle controller;

[0008] A vibration collection unit is electrically connected to the input terminal of the vehicle controller and is used to monitor the three-directional acceleration data of the vehicle body in real time and transmit it to the vehicle controller;

[0009] A battery management system is electrically connected to the input terminal of the vehicle controller and is used to monitor the battery power in real time and transmit the information to the vehicle controller;

[0010] A thermal management system includes a radiator consisting of a cooling fan and a cooling water pump, wherein the cooling fan and the cooling water pump are electrically connected to the output terminal of the vehicle controller, and the cooling fan speed and the cooling water pump power are dynamically adjusted by the vehicle controller;

[0011] The instrument is electrically connected to the output terminal of the vehicle controller and is used to display alarm information.

[0012] In some embodiments, the temperature acquisition unit includes an ambient temperature sensor located on the vehicle body; and / or the vibration acquisition unit includes a three-axis acceleration sensor located on the chassis.

[0013] In some embodiments, the thermal management system further includes an expansion water tank and a water level sensor for detecting the remaining amount of coolant.

[0014] In some embodiments, the system further includes a DCDC converter for converting voltage into a voltage suitable for a cooling water pump and a cooling fan, and a power distribution box mainly composed of fuses and relays.

[0015] In a second aspect, the present invention provides a control method for reducing energy consumption of a pure electric mining car radiator, comprising the following steps:

[0016] Step S1, signal acquisition: transmitting the monitored ambient temperature, battery power and vehicle body vibration data to the vehicle controller;

[0017] Step S2, ambient temperature determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current ambient temperature;

[0018] Step S3, vibration level determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current vehicle body vibration data;

[0019] Step S4, battery power determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current battery power.

[0020] In some embodiments, the specific process of signal acquisition in step S1 is as follows:

[0021] The ambient temperature sensor monitors the ambient temperature in real time and transmits it to the vehicle controller. The battery management system monitors the battery power in real time through its own sensor and transmits it to the vehicle controller. The acceleration sensor located on the chassis monitors the acceleration data of the vehicle body in three directions: X-axis, Y-axis, and Z-axis in real time and transmits it to the vehicle controller.

[0022] In some embodiments, the specific process of determining the ambient temperature in step S2 is as follows:

[0023] The vehicle controller receives the signal transmitted by the ambient temperature sensor and calculates the current ambient temperature;

[0024] If the current temperature is lower than the first temperature threshold, the vehicle controller adjusts the radiator output to 80% of the normal output;

[0025] If the current temperature is higher than the first temperature threshold and lower than the second temperature threshold, the vehicle controller adjusts the radiator output to normal output;

[0026] If the current temperature is higher than the second temperature threshold and lower than the third temperature threshold, the vehicle controller adjusts the radiator output to 120% of the normal output;

[0027] If the current temperature is higher than the third temperature threshold, the vehicle controller adjusts the radiator output to full speed output.

[0028] In some embodiments, the specific process of determining the vibration level in step S3 is as follows:

[0029] The vehicle controller receives real-time acceleration data (X(n), Y(n), and Z(n)) from the vehicle's chassis accelerometer. The denoising module in the vehicle controller performs low-pass filtering on the data to remove high-frequency noise and other interference signals. The vehicle controller then uses the root mean square value (RMS) to measure the degree of vibration:

[0030]

[0031] a is a general term for the X, Y, and Z directions, n is the sampling point, and N is three times the acceleration sensor acquisition frequency. Substitute the vehicle body acceleration data X(n), Y(n), and Z(n) in the above formula to calculate the root mean square (RMS) three seconds before the current moment, RMS(X), RMS(Y), and RMS(Z), respectively. The vehicle controller then determines the vibration level.

[0032] When any value of RMS(X), RMS(Y), or RMS(Z) exceeds the vibration threshold, the vehicle controller adjusts the radiator output to 105% of the normal output;

[0033] When any two values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the radiator output to 110% of the normal output, and at the same time sends a vibration alarm message to the instrument through the CAN bus;

[0034] When all the values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the radiator output to 115% of the normal output, and at the same time sends a vibration alarm message to the instrument through the CAN bus.

[0035] In some embodiments, the specific process of determining the battery level in step S4 is as follows:

[0036] The vehicle controller receives battery power information from the battery management system via the CAN bus, and then determines whether the battery power is lower than the power threshold;

[0037] If the battery power is lower than the first power threshold, the vehicle controller adjusts the radiator to stop working, and the vehicle controller sends a power alarm message to the instrument through the CAN bus;

[0038] If the battery power level is higher than the first power threshold and lower than the second power threshold, the vehicle controller adjusts the radiator output to 90% of the normal output;

[0039] If the battery power is higher than the second power threshold, the vehicle controller adjusts the radiator output to normal output.

[0040] In a third aspect, the present invention provides a pure electric mining car, comprising the above-mentioned control system for reducing the energy consumption of the pure electric mining car radiator; or, comprising a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the above-mentioned control method for reducing the energy consumption of the pure electric mining car radiator when executing the computer program.

[0041] Beneficial effects of the present invention:

[0042] The present invention provides a control system and method for reducing the energy consumption of a pure electric mining car radiator. By real-time collection of data related to ambient temperature, battery charge, and vehicle vibration, combined with a pre-experimentally calibrated heat dissipation parameter model, the fan speed and water pump power are dynamically adjusted to achieve a balance between efficient heat dissipation and optimized energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0044] In the attached figure:

[0045] Figure 1 This is a schematic diagram of a control system for reducing energy consumption of a pure electric mining car radiator according to the present invention;

[0046] Figure 2 This is a schematic diagram of a control method for reducing energy consumption of a pure electric mining car radiator according to the present invention;

[0047] Figure 3 It is a schematic diagram of the signal acquisition principle of the present invention;

[0048] Figure 4 This is a schematic diagram of the ambient temperature determination of the present invention;

[0049] Figure 5 A schematic diagram of the vibration level determination method of the present invention;

[0050] Figure 6 This is a schematic diagram of the battery charge determination principle of the present invention.

[0051] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0053] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0054] like Figure 1 As shown, the present invention provides a control system for reducing the energy consumption of a pure electric mining car radiator, comprising a vehicle controller, a temperature acquisition unit, a vibration acquisition unit, a battery management system, a thermal management system and an instrument; the temperature acquisition unit is electrically connected to the input end of the vehicle controller for real-time monitoring of the ambient temperature and transmitting the data to the vehicle controller; the vibration acquisition unit is electrically connected to the input end of the vehicle controller for real-time monitoring of the acceleration data of the vehicle body in three directions and transmitting the data to the vehicle controller; the battery management system is electrically connected to the input end of the vehicle controller for real-time monitoring of the battery power and transmitting the data to the vehicle controller; the thermal management system comprises a radiator consisting of a cooling fan and a cooling water pump, the cooling fan and the cooling water pump are electrically connected to the output end of the vehicle controller, and the cooling fan speed and the cooling water pump power are dynamically adjusted by the vehicle controller; the instrument is electrically connected to the output end of the vehicle controller for displaying alarm information.

[0055] Further solutions also include a DCDC converter and a distribution box; the DCDC converter is used to convert the voltage into a voltage suitable for the cooling water pump and cooling fan; the distribution box is a protection device for the entire control system, including fuses and relays.

[0056] In a further embodiment, the temperature acquisition unit includes an ambient temperature sensor located on the vehicle body, which monitors the ambient temperature in real time and transmits the data to the vehicle controller. The vibration acquisition unit includes a three-axis acceleration sensor located on the chassis, which monitors the acceleration data in three directions of the vehicle body in real time and transmits the data to the vehicle controller.

[0057] In a further solution, the thermal management system also includes an expansion tank and a water level sensor for detecting the remaining coolant amount.

[0058] In a further solution, the battery management system is located in the power battery box and is used to monitor the battery power in real time and send it to the vehicle controller.

[0059] The vehicle controller includes a signal processing module, a CAN communication module, a heat dissipation demand determination module, and a heat dissipation safety determination module. The cooling water pump has a 0-100% power adjustment. The cooling fan is a PWM adjustable speed fan.

[0060] like Figure 2 As shown, the present invention also provides a control method for reducing energy consumption of a pure electric mining car radiator, comprising the following steps:

[0061] Step S1, signal acquisition: transmitting the monitored ambient temperature, battery power and vehicle body vibration data to the vehicle controller;

[0062] Step S2, ambient temperature determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current ambient temperature;

[0063] Step S3, vibration level determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current vehicle body vibration data;

[0064] Step S4, battery power determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current battery power.

[0065] Further solutions, such as Figure 3 As shown, the specific process of signal acquisition in step S1 is as follows: the ambient temperature sensor monitors the ambient temperature in real time and transmits it to the vehicle controller; the battery management system monitors the battery power in real time through its own sensor and transmits it to the vehicle controller; the acceleration sensor located on the chassis monitors the acceleration data of the vehicle body in three directions of X-axis, Y-axis and Z-axis in real time and transmits it to the vehicle controller.

[0066] Further solutions, such as Figure 4 As shown, the specific process of the ambient temperature determination in step S2 is as follows: the vehicle controller receives the signal transmitted by the ambient temperature sensor and calculates the ambient temperature at the current moment;

[0067] If the current temperature is lower than the first temperature threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 80% of the normal output through PWM;

[0068] If the current temperature is higher than the first temperature threshold and lower than the second temperature threshold, the vehicle controller adjusts the output of the cooling fan and the cooling water pump to normal output through PWM;

[0069] If the current temperature is higher than the second temperature threshold and lower than the third temperature threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 120% of the normal output through PWM;

[0070] If the current temperature is higher than the third temperature threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to full speed output through PWM.

[0071] Further solutions, such as Figure 5 As shown, the specific process of vibration degree judgment in step S3 is:

[0072] The vehicle controller receives real-time acceleration data (X(n), Y(n), and Z(n)) from the vehicle's chassis accelerometers. The denoising module in the vehicle controller performs low-pass filtering on the data to remove high-frequency noise and other interference signals. The vehicle controller then uses the root mean square (RMS) value to measure the degree of vibration:

[0073]

[0074] a is a general term for the X, Y, and Z directions, n is the sampling point, and N is three times the acceleration sensor acquisition frequency. Substitute the vehicle body acceleration data X(n), Y(n), and Z(n) in the above formula to calculate the root mean square (RMS) three seconds before the current moment, RMS(X), RMS(Y), and RMS(Z), respectively. The vehicle controller then determines the vibration level.

[0075] When any value of RMS(X), RMS(Y), or RMS(Z) exceeds the vibration threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 105% of the normal output through PWM;

[0076] When any two values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 110% of the normal output through PWM. At the same time, the vehicle controller sends a vibration alarm message to the instrument through the CAN bus, and the instrument lights up yellow.

[0077] When all the values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 115% of the normal output through PWM. At the same time, the vehicle controller sends a vibration alarm message to the instrument through the CAN bus, and the instrument lights up red.

[0078] Further solutions, such as Figure 6 As shown, the specific process of battery power determination in step S4 is as follows:

[0079] The vehicle controller receives battery power information from the battery management system via the CAN bus, and then determines whether the battery power is lower than the power threshold;

[0080] If the battery power is lower than the first power threshold, the vehicle controller adjusts the cooling fan and cooling water pump through PWM to stop working, and the vehicle controller sends a power alarm message to the instrument through the CAN bus;

[0081] If the battery power is higher than the first power threshold and lower than the second power threshold, the vehicle controller adjusts the output of the cooling fan and cooling water pump to 90% of the normal output through PWM;

[0082] If the battery power is higher than the second power threshold, the vehicle controller adjusts the output of the cooling fan and the cooling water pump to normal output through PWM.

[0083] In summary, in response to the heat dissipation needs of pure electric mining cars, the present invention provides a control system and method for reducing the energy consumption of pure electric mining car radiators. By real-time collection of ambient temperature, battery power and vehicle vibration-related data, combined with a pre-experimentally calibrated heat dissipation parameter model, the fan speed and water pump power are dynamically adjusted to achieve a balance between efficient heat dissipation and energy consumption optimization.

[0084] The pure electric mining car provided by the present invention is described below. The pure electric mining car described below and the control system for reducing energy consumption of the pure electric mining car radiator described above can be referred to each other.

[0085] A pure electric mining car provided by the present invention may include a control system for reducing energy consumption of a pure electric mining car radiator as described in any one of the above embodiments.

[0086] The beneficial effects achieved by the pure electric mining car provided by the present invention are consistent with the beneficial effects achieved by the control system for reducing the energy consumption of the pure electric mining car radiator provided by the present invention, and will not be repeated here.

[0087] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0088] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0089] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A control system for reducing energy consumption of a pure electric mining car radiator, characterized in that: include: Vehicle controller; A temperature acquisition unit is electrically connected to the input terminal of the vehicle controller and is used to monitor the ambient temperature in real time and transmit it to the vehicle controller; A vibration collection unit is electrically connected to the input terminal of the vehicle controller and is used to monitor the three-directional acceleration data of the vehicle body in real time and transmit it to the vehicle controller; A battery management system is electrically connected to the input terminal of the vehicle controller and is used to monitor the battery power in real time and transmit the information to the vehicle controller; A thermal management system includes a radiator consisting of a cooling fan and a cooling water pump, wherein the cooling fan and the cooling water pump are electrically connected to the output terminal of the vehicle controller, and the cooling fan speed and the cooling water pump power are dynamically adjusted by the vehicle controller; The instrument is electrically connected to the output terminal of the vehicle controller and is used to display alarm information.

2. A control system for reducing energy consumption of a pure electric mining car radiator according to claim 1, characterized in that: The temperature acquisition unit includes an ambient temperature sensor located on the vehicle body; and / or the vibration acquisition unit includes a three-axis acceleration sensor located on the chassis.

3. A control system for reducing energy consumption of a pure electric mining car radiator according to claim 1, characterized in that: The thermal management system further includes an expansion water tank and a water level sensor for detecting the remaining amount of coolant.

4. A control system for reducing energy consumption of a pure electric mining car radiator according to claim 1, characterized in that: It also includes a DCDC converter for converting voltage into a voltage suitable for the cooling water pump and cooling fan, and a distribution box mainly consisting of fuses and relays.

5. A control method for reducing energy consumption of a pure electric mining car radiator, characterized in that: The following steps are involved: Step S1, signal acquisition: transmitting the monitored ambient temperature, battery power and vehicle body vibration data to the vehicle controller; Step S2, ambient temperature determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current ambient temperature; Step S3, vibration level determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current vehicle body vibration data; Step S4, battery power determination: the vehicle controller adjusts the speed of the cooling fan and the output power of the cooling water pump according to the current battery power.

6. A control method for reducing energy consumption of a pure electric mining car radiator according to claim 5, characterized in that: The specific process of signal acquisition in step S1 is as follows: The ambient temperature sensor monitors the ambient temperature in real time and transmits it to the vehicle controller. The battery management system monitors the battery power in real time through its own sensor and transmits it to the vehicle controller. The acceleration sensor located on the chassis monitors the acceleration data of the vehicle body in three directions: X-axis, Y-axis, and Z-axis in real time and transmits it to the vehicle controller.

7. A control method for reducing energy consumption of a pure electric mining car radiator according to claim 5, characterized in that: The specific process of ambient temperature determination in step S2 is as follows: The vehicle controller receives the signal transmitted by the ambient temperature sensor and calculates the current ambient temperature; If the current temperature is lower than the first temperature threshold, the vehicle controller adjusts the radiator output to 80% of the normal output; If the current temperature is higher than the first temperature threshold and lower than the second temperature threshold, the vehicle controller adjusts the radiator output to normal output; If the current temperature is higher than the second temperature threshold and lower than the third temperature threshold, the vehicle controller adjusts the radiator output to 120% of the normal output; If the current temperature is higher than the third temperature threshold, the vehicle controller adjusts the radiator output to full speed output.

8. A control method for reducing energy consumption of a pure electric mining car radiator according to claim 5, characterized in that: The specific process of vibration degree judgment in step S3 is as follows: The vehicle controller receives real-time acceleration data (X(n), Y(n), and Z(n)) from the vehicle's chassis accelerometer. The denoising module in the vehicle controller performs low-pass filtering on the data to remove high-frequency noise and other interference signals. The vehicle controller then uses the root mean square value (RMS) to measure the degree of vibration: a is a general term for the X, Y, and Z directions, n is the sampling point, and N is three times the acceleration sensor acquisition frequency. Substitute the vehicle body acceleration data X(n), Y(n), and Z(n) in the above formula to calculate the root mean square (RMS) three seconds before the current moment, RMS(X), RMS(Y), and RMS(Z), respectively. The vehicle controller then determines the vibration level. When any value of RMS(X), RMS(Y), or RMS(Z) exceeds the vibration threshold, the vehicle controller adjusts the radiator output to 105% of the normal output; When any two values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the radiator output to 110% of the normal output, and at the same time sends a vibration alarm message to the instrument through the CAN bus; When all the values of RMS(X), RMS(Y), and RMS(Z) exceed the vibration threshold, the vehicle controller adjusts the radiator output to 115% of the normal output, and at the same time sends a vibration alarm message to the instrument through the CAN bus.

9. A control method for reducing energy consumption of a pure electric mining car radiator according to claim 5, characterized in that: The specific process of battery power determination in step S4 is as follows: The vehicle controller receives battery power information from the battery management system via the CAN bus, and then determines whether the battery power is lower than the power threshold; If the battery power is lower than the first power threshold, the vehicle controller adjusts the radiator to stop working, and the vehicle controller sends a power alarm message to the instrument through the CAN bus; If the battery power level is higher than the first power threshold and lower than the second power threshold, the vehicle controller adjusts the radiator output to 90% of the normal output; If the battery power is higher than the second power threshold, the vehicle controller adjusts the radiator output to normal output.

10. A pure electric mining car, characterized by: The method comprises the control system for reducing the energy consumption of a pure electric mining car radiator as described in any one of claims 1 to 4; or comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the control method for reducing the energy consumption of a pure electric mining car radiator as described in any one of claims 5 to 9 when executing the computer program.

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