New energy mine truck heat collection system and heat collection method

Abstract

The invention relates to a new energy mine truck heat collection system and a heat collection method, and belongs to the technical field of mining mechanical equipment. The heat collecting system comprises an electric drive system heat collecting unit, a heat collecting unit and a heat collecting unit, wherein the electric drive system heat collecting unit is configured to collect heat energy generated by an electric drive system of a mine truck; the hydraulic system heat collection unit is configured to collect heat energy generated by a hydraulic system of the mine truck; the heat release unit is configured to release heat energy on the inner wall of a compartment of the mine truck; the heat exchange unit communicates with the electric drive system heat collection unit, the hydraulic system heat collection unit and the heat release unit and is configured to transfer heat energy collected by the electric drive system heat collection unit and the hydraulic system heat collection unit to the heat release unit; the control unit is electrically connected with the electric drive system heat collection unit, the hydraulic system heat collection unit and the heat release unit and is configured to control operation of the heat collection system. The invention aims to solve the problems of high power consumption, heat energy waste, high maintenance cost and time cost and the like in the ice melting and preventing process of the new energy mine truck.

Description

Technical Field

[0001] This invention belongs to the technical field of mining machinery and equipment, and particularly relates to a new energy mining truck heat collection system and heat collection method. Background Technology

[0002] With the rapid development of new energy vehicles, mining trucks are gradually being upgraded to new energy mining trucks that primarily utilize new energy sources for propulsion. Some are even operating as driverless new energy mining trucks for transporting mining materials. This reduces operating and maintenance costs for mining production and saves significant human and material resources.

[0003] In open-pit mine environments, mining trucks need to adapt to material transport operations under extremely cold conditions. Due to the low temperatures, the inner walls of the truck bed floor and front panel easily freeze and adhere to moisture-containing materials (such as stripped soil, silt, etc.), causing material residue (the residue rate can reach 15-20% of the total loaded material mass), increased vehicle weight, reduced unloading efficiency, and truck bed corrosion. To address these issues, existing technologies employ various de-icing and anti-icing methods. For fuel-powered mining trucks, the engine's heat and the generated high-temperature exhaust gases are used to heat the truck bed; for new energy (pure electric or range-extended) mining trucks, battery-powered PTC (Positive Temperature Coefficient) thermistor heaters are typically used for heating the truck bed; and chemical coatings or mechanical cleaning are also used for anti-icing treatment.

[0004] However, the above-mentioned solutions still have many drawbacks for new energy mining trucks: such as high power consumption, resulting in significant range reduction; continuous heating, leading to heat energy waste; and the use of chemical coatings or mechanical de-icing, resulting in increased maintenance and time costs. Therefore, there is an urgent need for a heat collection system for new energy mining trucks that can solve the above-mentioned problems and form an efficient, energy-saving, and low-cost solution for de-icing and anti-icing of the truck body. Summary of the Invention

[0005] In view of the pain points of the prior art, the purpose of this invention is to provide a heat collection system and method for new energy mining trucks, which can solve the problems of high power consumption, heat waste, and high maintenance and time costs in the process of de-icing and anti-icing of new energy mining trucks. The specific invention content is as follows:

[0006] In a first aspect, the present invention provides a new energy mining truck heat collection system, comprising:

[0007] The electric drive system heat collection unit is configured to collect the heat energy generated by the electric drive system of the mining truck;

[0008] A hydraulic system heat collection unit is configured to collect the heat energy generated by the hydraulic system of the mining truck;

[0009] A heat release unit is configured to release heat energy from the inner wall of the car compartment of the mining truck;

[0010] A heat exchange unit is connected to the heat collection unit of the electric drive system, the heat collection unit of the hydraulic system, and the heat release unit, respectively, and is configured to transfer the heat energy collected by the heat collection unit of the electric drive system and the heat collection unit of the hydraulic system to the heat release unit.

[0011] as well as,

[0012] The control unit is electrically connected to the electric drive system heat collection unit, the hydraulic system heat collection unit, and the heat release unit, respectively, and is configured to control the operation of the heat collection system.

[0013] Furthermore, the electric drive system heat collection unit includes:

[0014] The first medium flow channel is a connecting pipe structure, which is connected to the heat exchange unit and is disposed inside the housing of at least one of the drive motor, MCU and DC / DC converter in the electric drive system;

[0015] A medium, disposed within the first medium flow channel, is configured to absorb the heat energy of at least one of the drive motor, MCU, and DC / DC converter;

[0016] as well as,

[0017] A first medium driving unit is disposed on the pipeline of the first medium flow channel and electrically connected to the control unit, and is configured to drive the medium to circulate.

[0018] Furthermore, the electric drive system heat collection unit includes a first reversing valve; the first reversing valve is disposed on the pipeline of the first medium flow channel, electrically connected to the control unit, and configured to change the flow direction of the medium, so that the medium enters or does not enter the heat exchange unit.

[0019] Furthermore, the hydraulic system heat collection unit is connected to the heat exchange unit via hydraulic pipelines.

[0020] Furthermore, the hydraulic system heat collection unit includes a second reversing valve; the second reversing valve is disposed on the hydraulic pipeline, electrically connected to the control unit, and configured to change the flow direction of the hydraulic oil in the hydraulic system, so that the hydraulic oil enters or does not enter the heat exchange unit.

[0021] Furthermore, the heat release unit includes: a second medium flow channel, which is a connecting pipe structure, connected to the heat exchange unit, and disposed on the inner wall of at least one of the bottom plate, front plate and side plate of the mining truck;

[0022] The medium, disposed within the second medium flow channel, is configured to transfer heat with the heat release unit;

[0023] as well as,

[0024] The second medium driving unit is disposed on the pipeline of the second medium flow channel and electrically connected to the control unit, and is configured to drive the medium to circulate.

[0025] Furthermore, the heat release unit includes a second medium flow channel and a third reversing valve;

[0026] The second medium flow channel is a connecting pipe structure, which is connected to the heat exchange unit and is disposed on the inner wall of at least one of the bottom plate, front plate and side plate of the mining truck.

[0027] The third reversing valve is installed on the pipeline of the second medium flow channel and is electrically connected to the control unit. It is configured to change the flow direction of the medium, so that the medium may or may not enter the heat exchange unit.

[0028] The first medium flow channel and the second medium flow channel can be connected through the first reversing valve and the third reversing valve.

[0029] Furthermore, the flow channels of the electric drive system heat collection unit, the hydraulic system heat collection unit, and the heat release unit are not interconnected within the heat exchange unit.

[0030] Furthermore, the flow channels of the electric drive system heat collection unit, the hydraulic system heat collection unit, and the heat release unit are arranged alternately within the heat exchange unit.

[0031] A second aspect of the present invention provides a new energy mining truck heat collection method, applicable to the mining truck in the material transportation operation process; the method includes:

[0032] S1, when the ambient temperature reaches the first threshold preset by the control unit, execute S2; when the ambient temperature reaches the second threshold preset by the control unit, execute S7; when the ambient temperature reaches the third threshold preset by the control unit, execute S9.

[0033] S2, the control unit positions the first reversing valve in the heating valve position; the first medium flow channel is connected to the heat exchange unit; the medium circulates between the heat exchange unit and the electric drive system heat collection unit under the action of the first medium driving unit;

[0034] S3, the control unit positions the third reversing valve in the heating valve position; the second medium flow channel is connected to the heat exchange unit; the medium circulates between the heat exchange unit and the heat release unit under the action of the second medium driving unit;

[0035] S4, when the time until unloading during the mining truck operation is within the time threshold preset by the control unit, the control unit switches the second reversing valve to the connecting valve position; the hydraulic pipeline of the hydraulic system heat collection unit is connected to the heat exchange unit; the hydraulic oil of the mining truck hydraulic system circulates between the heat exchange unit and the hydraulic system heat collection unit under the action of the hydraulic pump;

[0036] S5, the control unit increases the safety pressure of the mining truck hydraulic system and increases the power of the second medium drive unit;

[0037] S6, after the mining truck completes the unloading operation, the control unit restores the safety pressure to its initial value and restores the initial power of the second medium drive unit; sets the second reversing valve to the disconnected position; and returns to S1 until the material transportation operation is completed;

[0038] S7, the control unit keeps the second reversing valve in the disconnected valve position and keeps the first reversing valve in the heating valve position; the first medium flow channel is in communication with the heat exchange unit; the medium circulates between the heat exchange unit and the electric drive system heat collection unit under the action of the first medium drive unit;

[0039] S8, the control unit positions the third reversing valve in the heating valve position; the second medium flow channel is connected to the heat exchange unit; the medium circulates between the heat exchange unit and the heat release unit under the action of the second medium drive unit; returning to S1 until the material transportation operation is completed;

[0040] S9, the control unit positions both the first reversing valve and the third reversing valve in the heat dissipation valve position;

[0041] S10, the control unit keeps the second directional valve in the disconnected valve position;

[0042] S11, the first medium flow channel and the second medium flow channel are in a connected state; the hydraulic pipeline is disconnected from the heat exchange unit; the medium circulates between the heat release unit and the electric drive system heat collection unit under the action of the first medium drive unit and the second medium drive unit; return to S1 until the material transportation operation is completed.

[0043] The beneficial effects of this invention are as follows:

[0044] 1. The electric drive system heat collection unit can collect the waste heat generated during the electric drive of the mining truck and use it to heat the truck bed. This can prevent ice from melting and save battery consumption, thus ensuring the driving range.

[0045] 2. The hydraulic system heat collection unit can collect the waste heat generated by the hydraulic system during the transportation of mining trucks, and use it to heat the truck bed. This can prevent ice from melting and save battery consumption, thus ensuring the driving range.

[0046] 3. The use of a dual heat collection system to heat the carriage can effectively improve the efficiency of anti-icing and de-icing, ensuring the smooth operation of the entire material transportation process;

[0047] 4. By switching between heating and heat dissipation according to different ambient temperatures, it is possible to use a dual heat collection system to heat the passenger compartment in winter and use the heat exchange unit or directly use the heat release unit to dissipate heat from the electric drive system in summer. This achieves multi-functionality and produces a new technical effect for heat dissipation of the electric drive system.

[0048] 5. The heat collection system provided by this invention not only solves the pain points of the prior art, but also achieves the effects of easy modification on the original vehicle basis, low cost, and effective use. Attached Figure Description

[0049] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings.

[0050] Figure 1 This is a schematic diagram of the new energy mining truck heat collection system under winter basic insulation conditions or spring and autumn heat dissipation conditions, according to an embodiment of the present invention.

[0051] Figure 2 This is a schematic diagram of the winter rapid heating system of the new energy mining truck heat collection system according to an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the summer heat dissipation system of the new energy mining truck heat collection system according to an embodiment of the present invention;

[0053] Figure 4 This is a flowchart of the new energy mining card heat collection method according to an embodiment of the present invention.

[0054] Figure label:

[0055] 1. Electric drive system heat collection unit; 101. First medium flow channel; 102. First medium drive unit; 103. First directional valve; 2. Hydraulic system heat collection unit; 201. Second directional valve; 2011. Connecting valve position; 2012. Disconnecting valve position; 202. Check valve; 3. Heat release unit; 301. Second medium flow channel; 302. Second medium drive unit; 303. Third directional valve; 304. Expansion tank; 4. Heat exchange unit; 5. Heating valve position; 6. Cooling valve position; 7. Drive motor; 8. MCU; 9. DC / DC converter; 10. Hydraulic pump; 11. Hydraulic oil tank; 12. Carriage; 13. Hydraulic pipeline. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0057] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0058] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0059] It should be noted that when a component is referred to as "fixed to," "placed," "equipped with," "provided with," "arranged on," or "connected to" another component, it can be directly on the other component or may have an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or may have an intervening component present.

[0060] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of methods and systems consistent with some aspects of the invention as detailed in the appended claims.

[0061] This invention proposes a heat collection system and method for new energy mining trucks, which solves the problems of high power consumption, heat waste, and high maintenance and time costs in the process of de-icing and anti-icing of new energy mining trucks.

[0062] Device Examples

[0063] Please refer to the attached document. Figures 1-4 The contents shown are for better understanding of the specific structure of the present invention. One specific embodiment of the present invention discloses a new energy mining truck heat collection system, such as... Figure 1 As shown, it includes:

[0064] The electric drive system heat collection unit 1 is used to collect the heat energy generated by the electric drive system of the mining truck. Specifically, the electric drive system heat collection unit 1 mainly collects, but is not limited to, the waste heat generated by the drive motor 7, MCU8 (Microcontroller Unit), and DC / DC converter 9 (a DC voltage converter commonly used in new energy vehicles) in the electric drive system of the new energy mining truck.

[0065] Specifically, the original vehicle's electric drive cooling system can be used, which typically includes components such as cooling pipes and radiators. The electric drive system heat collection unit 1 in this embodiment can be formed by changing the flow direction of the cooling medium in the pipes.

[0066] In this embodiment, a hydraulic system heat collection unit 2 is also included, which is used to collect the heat energy generated by the hydraulic system of the mining truck.

[0067] Specifically, the hydraulic pump 10, working device, braking system, and other components in the new energy mining truck mostly adopt a hydraulic transmission structure. During the operation of the mining truck, the circulation of hydraulic oil in the hydraulic system generates a large amount of waste heat. This waste heat will cause the hydraulic oil itself to heat up, and if it is not utilized, it will be released into the external environment, resulting in waste. Therefore, the waste heat of the hydraulic oil can be utilized by changing the flow direction of the hydraulic oil based on the original hydraulic pipes, thereby forming the hydraulic system heat collection unit 2 in this embodiment.

[0068] In this embodiment, a heat release unit 3 is also included, which is used to release heat energy on the inner wall of the car body 12 of the mining truck.

[0069] Specifically, but not limited to, adding cooling coils to the floor and front panel of the carriage 12, such as using copper as the coil material and encapsulating the coils with metal sheets to serve as the heating / heat dissipation area of ​​the carriage 12. A drive component and corresponding control valve are then added to the cooling coils to form a heat release unit 3.

[0070] In this embodiment, a heat exchange unit 4 is also included, which is connected to the electric drive system heat collection unit 1, the hydraulic system heat collection unit 2, and the heat release unit 3 through pipelines, and is used to transfer the heat energy collected by the electric drive system heat collection unit 1 and the hydraulic system heat collection unit 2 to the heat release unit 3.

[0071] Specifically, heat exchange unit 4 can adopt a plate heat exchanger structure. Since heat exchange is required for three different media, a three-medium plate heat exchanger, which has three independent and unconnected circulation pipelines, can be used.

[0072] In this embodiment, a control unit (not shown in the figure) is also included, which is electrically connected to the electric drive system heat collection unit 1, the hydraulic system heat collection unit 2 and the heat release unit 3 respectively, and is used to control the operation of the heat collection system.

[0073] Specifically, the control unit can be shared with the VCU (Vehicle Control Unit) integrated into the mining truck to control the heat collection system. This heat collection system can use the VCU as the control unit, communicating with the unmanned industrial control computer via a CAN bus. The VCU program can execute logic based on preset thresholds, or the unmanned driving program can issue commands to achieve active adjustment and modification of threshold parameters.

[0074] Specifically, an independent control unit can be added, such as a PLC (Programmable Logic Controller), or a circuit including at least one processor, or a circuit including at least one microcontroller, or a combination of multiple circuits or chips, as long as the corresponding function can be achieved; it is understood that for those skilled in the art, the control circuit can also be a common circuit composed of amplifiers, comparators, transistors, MOSFETs, etc., to achieve the corresponding function in a purely hardware manner.

[0075] In this specific implementation, the electric drive system's heat collection unit 1 and the hydraulic system's heat collection unit 2 simultaneously heat the heat release unit 3 (carriage 12) for de-icing. The control unit then automatically controls the de-icing process. Without additional battery power consumption, this effectively de-icing the carriage 12, improving the efficiency of mining truck transportation, reducing the load on the trucks (material frozen in carriage 12), and thus saving energy. This provides a strong guarantee for the efficient and smooth transportation of materials in the mining area.

[0076] In some embodiments, the electric drive system heat collection unit 1 includes a first medium flow channel 101. The first medium flow channel 101 can utilize the piping in the original vehicle's electric drive cooling system. It is typically a connected pipe structure formed by copper pipes, connected to one of the independent pipes in the heat exchange unit 4.

[0077] Specifically, the conduit can be coiled inside the housing of at least one of the drive motor 7, MCU8, and DC / DC converter 9 in the electric drive system. The more coils there are, the greater the heat energy can be collected.

[0078] In this embodiment, a medium is also included, disposed within the first medium flow channel 101, for absorbing the heat energy of at least one of the drive motor 7, MCU8 and DC / DC converter 9.

[0079] Specifically, ethylene glycol aqueous solution can be used as a cooling medium, but is not limited to this. Ethylene glycol, as a base fluid for vehicle coolants, has the following characteristics: extremely low freezing point and excellent antifreeze properties; high boiling point and good high-temperature resistance; large specific heat capacity and strong thermal conductivity and heat dissipation; moderate viscosity and good low-temperature fluidity; strong chemical stability and wide applicability to various operating conditions.

[0080] In this embodiment, a first medium driving unit 102 is also included, which is disposed on the pipeline of the first medium flow channel 101 and electrically connected to the control unit for driving the medium to circulate.

[0081] Specifically, an electric pump structure can be adopted, which can realize the circulation of the driving medium in the pipeline of the first medium flow channel 101.

[0082] In this embodiment, a first reversing valve 103 is also included. It can be a two-position six-way valve structure, which is installed on the pipeline of the first medium flow channel 101 and electrically connected to the control unit. It is used to change the flow direction of the medium so that the medium enters the heat exchange unit 4 or directly connects to the heat release unit 3 without passing through the heat exchange unit 4.

[0083] In specific implementation, a first reversing valve 103 is set up, which can realize the automatic control of the flow direction of the medium of the electric drive system heat collection unit 1 according to the ambient temperature. It can switch between the heating mode of the carriage 12 and the heat dissipation mode of the electric drive system, providing more guarantees for improving the efficiency and reducing the cost of material transportation operations in the mining area.

[0084] In some embodiments, the hydraulic system heat collection unit 2 is connected to the heat exchange unit 4 via a hydraulic pipeline 13 and includes a second directional valve 201.

[0085] Specifically, hydraulic line 13 is the original hydraulic system line that can connect the hydraulic oil tank 11, the working device and the hydraulic pump 10.

[0086] Specifically, the second directional valve 201 can be a two-position three-way valve structure, installed on the hydraulic line 13, and electrically connected to the control unit. Under the action of the control unit, it can change the flow direction of the hydraulic oil in the hydraulic system, allowing the hydraulic oil to enter the heat exchange unit 4 for heat exchange or to circulate directly through the existing hydraulic line 13 without passing through the heat exchange unit 4. To prevent hydraulic oil from flowing back to the heat exchange unit 4, a check valve 202 can be installed on the hydraulic line 13.

[0087] In specific implementation, a second reversing valve 201 is set up, which can realize the automatic control of the flow direction of hydraulic oil in the hydraulic system heat collection unit 2 by the control unit according to the ambient temperature. It can control whether the hydraulic oil participates in the heating of the carriage 12 under different working conditions, providing more guarantees for improving the efficiency and reducing the cost of material transportation operations in the mining area.

[0088] In some embodiments, the heat release unit 3 includes a second medium flow channel 301.

[0089] Specifically, the second medium flow channel 301 is a connecting pipe structure, which can use the same material and structure as the first medium flow channel 101, and is connected to one of the independent pipes in the heat exchange unit 4, and is set on the inner wall of at least one of the bottom plate, front plate and side plate of the car body 12 of the mining truck.

[0090] In this embodiment, the second medium flow channel 301 is preferably located on the front side of the floor plate and the inner wall of the front plate of the carriage 12, where it is more prone to freezing and sticking to materials.

[0091] In this embodiment, a medium is also included, which is disposed in the second medium flow channel 301 for heat transfer with the heat release unit 3.

[0092] Specifically, ethylene glycol aqueous solution can be used as the cooling medium, but it needs to be the same cooling medium as the heat collection unit 1 of the electric drive system.

[0093] In this embodiment, a second medium driving unit 302 is also included, which is disposed on the pipeline of the second medium flow channel 301 and electrically connected to the control unit for driving the medium to circulate.

[0094] Specifically, an electric pump structure can be adopted, which can realize the circulation of the driving medium in the pipeline of the second medium flow channel 301.

[0095] In this embodiment, a third reversing valve 303 is also included. It can adopt the same two-position six-way valve structure as the first reversing valve 103. It is installed on the pipeline of the second medium flow channel 301 and electrically connected to the control unit. It is used to change the flow direction of the medium so that the medium enters the heat exchange unit 4 or directly connects to the electric drive system heat collection unit 1 without passing through the heat exchange unit 4.

[0096] Specifically, the first medium flow channel 101 and the second medium flow channel 301 can be connected through the first reversing valve 103 and the third reversing valve 303 and the pipeline between them.

[0097] In practice, the first reversing valve 103 and the third reversing valve 303 are set to connect the first medium flow channel 101 and the second medium flow channel 301 to each other. This allows for switching between the heating mode of the car body 12 and the heat dissipation mode of the electric drive system under different ambient temperatures, which can meet the various needs of the mining truck in the mining environment, thereby improving operating efficiency and saving operating costs.

[0098] In some embodiments, the flow channels of the electric drive system heat collection unit 1, the hydraulic system heat collection unit 2, and the heat release unit 3 are not interconnected within the heat exchange unit 4. Furthermore, the flow channels of the electric drive system heat collection unit 1, the hydraulic system heat collection unit 2, and the heat release unit 3 are arranged alternately within the heat exchange unit 4.

[0099] Specifically, heat exchange unit 4 adopts a three-medium plate heat exchanger, which has three independent and unconnected circulation pipelines inside. It can simultaneously exchange heat energy between the medium of the electric drive system heat collection unit 1, the medium of the heat release unit 3, and the hydraulic oil of the hydraulic system heat collection unit 2.

[0100] In practice, a three-medium plate heat exchanger is used, which enables the three media to exchange heat with each other without mixing, providing a reliable guarantee for de-icing and de-icing of the mining truck compartment 12.

[0101] In some embodiments, the heat release unit 3 further includes an expansion tank 304. The expansion tank 304 is a prior art closed liquid storage container with a pressure control device, installed at a high position in the heat release unit 3, used to contain the volume expansion of the medium due to temperature changes, collect gas in the system, maintain stable system pressure, and complete loop replenishment when the medium contracts, while realizing medium level monitoring and convenient filling.

[0102] The working principle of the mining card heat collection system provided by this invention is as follows:

[0103] In winter when temperatures are low, such as Figure 1 As shown, the control unit switches the first reversing valve 103 and the third reversing valve 303 to the heating valve position 5. Both the first medium flow channel 101 and the second medium flow channel 301 are connected to the heat exchange unit 4, exchanging the heat energy of the electric drive system with the medium of the heat release unit 3 to provide a base temperature between the truck bed 12 and the material, preventing excessively hard ice formation. When the mining truck enters the pre-set advance time node of the unloading stage, such as 10-15 minutes before unloading, ... Figure 2 As shown, the control unit switches the second reversing valve 201 to the connected valve position 2011, connecting the hydraulic system heat collection unit 2 and the heat exchange unit 4, enabling the dual heat collection systems to heat the carriage 12 together. In extremely cold weather, the control unit can appropriately increase the pressure relief valve of the hydraulic system within a safe range, thereby increasing the overall pressure of the hydraulic system and increasing the rotational speed of the second medium drive unit 302 to increase medium circulation, further promoting more heat exchange and thus achieving rapid ice melting and de-icing.

[0104] In spring and autumn when the temperature is normal, such as Figure 1 As shown, the control unit switches the first reversing valve 103 and the third reversing valve 303 to the heating valve position 5. This connects both the first medium flow channel 101 and the second medium flow channel 301 to the heat exchange unit 4. The control unit then switches the second reversing valve 201 to the disconnect valve position 2012, disconnecting the hydraulic system heat collection unit 2 from the heat exchange unit 4. At this time, the heat energy of the electric drive system heat collection unit 1 can be exchanged with the medium of the heat release unit 3. This achieves the function of using the carriage 12 to dissipate heat for the electric drive system.

[0105] During the high temperatures of summer, such as Figure 3 As shown, the control unit switches both the first reversing valve 103 and the second reversing valve 201 to the heat dissipation valve position 6. The first medium flow channel 101 is directly connected to the second medium flow channel 301. The media of the electric drive system's heat collection unit 1 and heat release unit 3 are combined into one, jointly transferring the heat energy of the electric drive system's heat collection unit 1 to the vehicle compartment 12 for heat dissipation. This method can more directly utilize the large heat dissipation area of ​​the vehicle compartment 12 and the high specific heat capacity of water-containing materials to cool the electric drive system.

[0106] By adopting the above method, ice can be melted and de-iced in the carriage 12 during winter, and a larger heat dissipation area and higher specific heat capacity can be provided for the electric drive system in summer. This is because the heat dissipation area of ​​the carriage 12 is much larger than that of the original electric drive system radiator, and relying on the characteristics of the material itself with high water content and high heat melt ratio, a better cooling environment can be provided for the medium, thereby achieving a multi-functional function and producing new technical effects.

[0107] Method Implementation Examples

[0108] Please refer to Figure 4 The illustrations are provided to better understand the specific embodiments of the present invention. The present invention provides a new energy mining truck heat collection method, applicable to the material transportation operation of mining trucks. The method includes:

[0109] I. Determining Ambient Temperature

[0110] 1. When the ambient temperature reaches the first threshold preset by the control unit, switch to the basic winter insulation mode.

[0111] 2. When the ambient temperature reaches the second threshold preset by the control unit, switch to spring and autumn heat dissipation mode.

[0112] 3. When the ambient temperature reaches the third threshold preset by the control unit, switch to summer heat dissipation mode.

[0113] Specifically, the first threshold, the second threshold, and the third threshold correspond to the ambient temperatures in winter, spring and autumn, and summer, respectively, and specific values ​​can be set according to the specific temperature of the mining area.

[0114] II. Winter Basic Insulation Conditions

[0115] 1. The control unit positions the first reversing valve 103 in the heating valve position 5. The first medium flow channel 101 is connected to the heat exchange unit 4. The medium circulates between the heat exchange unit 4 and the electric drive system heat collection unit 1 under the action of the first medium drive unit 102.

[0116] 2. The control unit positions the third reversing valve 303 in the heating valve position 5. The second medium flow channel 301 is connected to the heat exchange unit 4. The medium circulates between the heat exchange unit 4 and the heat release unit 3 under the action of the second medium drive unit 302.

[0117] III. Rapid Warming Conditions During Winter

[0118] 1. When the time remaining before unloading during mining truck operation reaches the preset time threshold of the control unit, the control unit switches the second directional valve 201 to the connected valve position 2011. The hydraulic pipeline 13 of the hydraulic system heat collection unit 2 is connected to the heat exchange unit 4. The hydraulic oil of the mining truck hydraulic system circulates between the heat exchange unit 4 and the hydraulic system heat collection unit 2 under the action of the hydraulic pump 10.

[0119] Specifically, the time threshold can be set in the control unit, such as 10min-15min, or an electronic fence can be set at a certain distance from the unloading point. When the mining truck enters the fence range, the winter rapid heating mode will be activated.

[0120] 2. The control unit increases the safety pressure of the mining truck hydraulic system and increases the power of the second medium drive unit 302.

[0121] Specifically, the system safety pressure should be increased within an appropriate range and should not be too high, otherwise it will cause safety problems.

[0122] IV. Restoring the basic insulation condition for winter

[0123] After the mining truck completes the unloading operation, the control unit restores the safety pressure to its initial value and the initial power of the second medium drive unit 302. It then positions the second directional valve 201 in the open valve position 2012. The system returns to the ambient temperature judgment stage until the material transport operation is completed.

[0124] V. Heat dissipation conditions in spring and autumn

[0125] 1. The control unit positions the first reversing valve 103 in the heating valve position 5. The first medium flow channel 101 is connected to the heat exchange unit 4. The medium circulates between the heat exchange unit 4 and the electric drive system heat collection unit 1 under the action of the first medium drive unit 102.

[0126] 2. Keep the second directional valve 201 in the open position 2012, so that hydraulic oil does not flow through the heat exchange unit 4.

[0127] 3. The control unit positions the third reversing valve 303 in the heating valve position 5. The second medium flow channel 301 is connected to the heat exchange unit 4. Under the action of the second medium drive unit 302, the medium circulates between the heat exchange unit 4 and the heat release unit 3. The process returns to the ambient temperature judgment stage until the material transportation operation is completed.

[0128] Specifically, under this operating condition, the electric drive system uses the heat exchange unit 4 and the heat release unit 3 for heat dissipation, which can make full use of the large heat dissipation area of ​​the carriage 12 and the large specific heat capacity of the water-containing materials for efficient heat dissipation.

[0129] VI. Summer Heat Dissipation Conditions

[0130] 1. The control unit positions both the first reversing valve 103 and the third reversing valve 303 in the heat dissipation valve position 6.

[0131] 2. The control unit keeps the second directional valve 201 in the open valve position 2012.

[0132] 3. The first medium flow channel 101 and the second medium flow channel 301 are connected. The hydraulic pipeline 13 is disconnected from the heat exchange unit 4. Under the action of the first medium drive unit 102 and the second medium drive unit 302, the medium circulates between the heat release unit 3 and the electric drive system heat collection unit 1. It returns to the ambient temperature judgment stage until the material transportation operation is completed.

[0133] Specifically, in high-temperature summer environments, the electric drive system utilizes direct connection to the heat release unit 3 for heat dissipation, further leveraging the large heat dissipation area of ​​the carriage 12 and the high specific heat capacity of water-containing materials for efficient heat dissipation. Furthermore, it eliminates the need for a dedicated radiator, saving production costs.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. A new energy mine card heat collection system, characterized in that, The system comprises: an electric drive system heat collecting unit configured to collect heat energy generated by an electric drive system of the mine truck; a hydraulic system heat collecting unit configured to collect heat energy generated by a hydraulic system of the mine truck; a heat releasing unit configured to release heat energy in an inner wall of a cabin of the mine truck; a heat exchange unit in communication with the electric drive system heat collecting unit, the hydraulic system heat collecting unit and the heat releasing unit, respectively, and configured to transfer heat energy collected by the electric drive system heat collecting unit and the hydraulic system heat collecting unit to the heat releasing unit; and a control unit electrically connected to the electric drive system heat collecting unit, the hydraulic system heat collecting unit and the heat releasing unit, respectively, and configured to control operation of the heat collecting system. The electric drive system heat collecting unit comprises:

2. The new energy mine card heat collection system according to claim 1, characterized in that, a first medium flow channel in a communication pipeline structure, in communication with the heat exchange unit, and arranged inside a housing of at least one of a drive motor, an MCU and a DC / DC converter of the electric drive system; a medium arranged in the first medium flow channel and configured to absorb heat energy of the at least one of the drive motor, the MCU and the DC / DC converter; and a first medium driving part arranged on a pipeline of the first medium flow channel and electrically connected to the control unit, and configured to drive the medium to circulate. The electric drive system heat collecting unit comprises a first reversing valve arranged on the pipeline of the first medium flow channel and electrically connected to the control unit, and configured to change a flow direction of the medium so that the medium enters or does not enter the heat exchange unit. The hydraulic system heat collecting unit is in communication with the heat exchange unit through a hydraulic pipeline.

3. The new energy mine card heat collection system according to claim 2, characterized in that, The hydraulic system heat collecting unit comprises a second reversing valve arranged on the hydraulic pipeline and electrically connected to the control unit, and configured to change a flow direction of hydraulic oil in the hydraulic system so that the hydraulic oil enters or does not enter the heat exchange unit.

4. The new energy mine card heat collection system according to claim 1, characterized in that, The heat releasing unit comprises:

5. The new energy mine card heat collection system according to claim 4, characterized in that, a second medium flow channel in a communication pipeline structure, in communication with the heat exchange unit, and arranged in an inner wall of at least one of a cabin floor, a front plate and a side plate of the mine truck; 6. The new energy mine card heat collection system according to claim 1, characterized in that, a medium arranged in the second medium flow channel and configured to perform heat transfer with the heat releasing unit; and a second medium driving part arranged on a pipeline of the second medium flow channel and electrically connected to the control unit, and configured to drive the medium to circulate. The heat releasing unit comprises a second medium flow channel and a third reversing valve; The second medium flow channel is in a communication pipeline structure, in communication with the heat exchange unit, and arranged in an inner wall of at least one of a cabin floor, a front plate and a side plate of the mine truck; 7. The new energy mine card heat collection system according to claim 3, characterized in that, The third reversing valve is arranged on a pipeline of the second medium flow channel and electrically connected to the control unit, and configured to change a flow direction of the medium so that the medium enters or does not enter the heat exchange unit; The first medium flow channel and the second medium flow channel can be in communication through the first reversing valve and the third reversing valve. Flow channels of the electric drive system heat collecting unit, the hydraulic system heat collecting unit and the heat releasing unit are not in communication with each other in the heat exchange unit. ​ 8. The new energy mine card heat collection system according to claim 1, characterized in that, ​ 9. The new energy mine card heat collection system according to claim 8, characterized in that, The flow channels of the electric drive system heat collecting unit, the hydraulic system heat collecting unit and the heat releasing unit are alternately arranged in the heat exchange unit.

10. A new energy mine card heat collection method, characterized in that, The new energy mining truck heat collecting system of any one of claims 1 to 9 is adopted, and is suitable for the process of material transportation operation of the mining truck; the method comprises: S1, when the ambient temperature reaches the first threshold value preset by the control unit, S2 is performed; when the ambient temperature reaches the second threshold value preset by the control unit, S7 is performed; when the ambient temperature reaches the third threshold value preset by the control unit, S9 is performed; S2, the control unit makes the first reversing valve be in a heating valve position; the first medium flow channel is in a communication state with the heat exchange unit; the medium circulates between the heat exchange unit and the electric drive system heat collecting unit under the action of the first medium driving part; S3, the control unit makes the third reversing valve be in a heating valve position; the second medium flow channel is in a communication state with the heat exchange unit; the medium circulates between the heat exchange unit and the heat releasing unit under the action of the second medium driving part; S4, when the distance to unloading time in the mining truck operation is in the time threshold value preset by the control unit, the control unit switches the second reversing valve to a communication valve position; the hydraulic pipeline of the hydraulic system heat collecting unit is in communication with the heat exchange unit; the hydraulic oil of the mining truck hydraulic system circulates between the heat exchange unit and the hydraulic system heat collecting unit under the action of the hydraulic pump; S5, the control unit increases the safety pressure of the mining truck hydraulic system and increases the power of the second medium driving part; S6, after the mining truck completes the unloading operation, the control unit restores the safety pressure to the initial value and restores the initial power of the second medium driving part; makes the second reversing valve be in a disconnected valve position; returns to S1 until the material transportation operation is completed; S7, the control unit keeps the second reversing valve in the disconnected valve position, and makes the first reversing valve be in a heating valve position; the first medium flow channel is in a communication state with the heat exchange unit; the medium circulates between the heat exchange unit and the electric drive system heat collecting unit under the action of the first medium driving part; S8, the control unit makes the third reversing valve be in a heating valve position; the second medium flow channel is in a communication state with the heat exchange unit; the medium circulates between the heat exchange unit and the heat releasing unit under the action of the second medium driving part; returns to S1 until the material transportation operation is completed; S9, the control unit makes the first reversing valve and the third reversing valve be in a heat dissipation valve position; S10, the control unit keeps the second reversing valve in the disconnected valve position; S11, the first medium flow channel and the second medium flow channel are in a communication state; the hydraulic pipeline is disconnected from the heat exchange unit; the medium circulates between the heat releasing unit and the electric drive system heat collecting unit under the action of the first medium driving part and the second medium driving part; returns to S1 until the material transportation operation is completed.

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