Control system for cold start of extended-range mine truck

Abstract

The utility model discloses a control system for cold start of an extended-range mine truck. The control system comprises a range extender; the battery management system is used for acquiring a battery pack SOC and a battery pack temperature; the TMS temperature management system is used for heating the battery and comprises a water heating module; the battery pack is connected with the battery management system; the cooling liquid temperature obtaining module is used for obtaining the engine cooling liquid temperature; the idling warm-up control module is used for controlling idling warm-up of an engine; the whole vehicle controller is configured to obtain the maximum value of the driving power of a driving motor under a preset gear and the discharging power of the whole vehicle when the mine truck climbs in a no-load mode; according to the battery temperature, the engine coolant temperature, the battery SOC and different corresponding relations between the maximum value of the driving power of the driving motor under the preset gear during no-load climbing of the mine truck and the discharging power of the whole vehicle, the mine truck is controlled to be cold-started in different modes; the range extender, the battery management system, the TMS temperature management system, the cooling liquid temperature obtaining module and the idling warm-up control module are in communication connection with the whole vehicle controller.

Description

Technical Field

[0001] This application relates to the field of range-extended mining truck technology, specifically to a control system for cold start of a range-extended mining truck. Background Technology

[0002] The harsh winter weather in northern regions often poses a significant challenge to new energy vehicles that rely on batteries for energy storage. The maximum continuous charge and discharge power of a battery is affected by its State of Charge (SOC) and cell temperature; the lower the SOC, the lower the maximum continuous charge and discharge power. Similarly, the lower the cell temperature, the lower the maximum continuous charge and discharge power. When the driving power of the motor is limited by the continuous discharge of the battery, it often results in insufficient power for electric mining trucks to climb hills (when the power is constant, the motor's driving torque is inversely proportional to its speed. In this case, the driver wants the vehicle to climb hills with greater torque and presses the accelerator pedal deeply, but the actual vehicle speed decreases, giving the driver the experience of insufficient power, i.e., P = F * V = T * n / 9550). Although the battery temperature will rise on its own during operation, this process is affected by the magnitude of the discharge current. When the temperature is low, the battery's discharge capacity is weaker, and it takes a long time for the battery to heat up. This greatly affects the efficiency of electric mining trucks when they are first powered on in the early morning of winter (when the battery cell temperature is low after sitting overnight) to load materials at the mine, and it also affects the travel speed of the entire convoy.

[0003] Existing technologies often employ single measures to address the insufficient power of mining trucks during cold starts. However, the degree of adjustment required for cold starts differs depending on the specific conditions. For example, the adjustment needed differs between low temperatures (around 0°C) and very low temperatures (around -20°C). Existing technologies often prioritize battery heating, neglecting the impact of battery discharge power on the climbing ability of the electric mining truck during the heating process. Furthermore, for range-extended electric mining trucks that incorporate a range extender as an additional energy source, optimal energy transfer efficiency is crucial for battery heating to enhance their fuel and energy-saving characteristics.

[0004] Therefore, it is evident that existing technologies for range-extended mining trucks going uphill without load still need further improvement and enhancement. Utility Model Content

[0005] This application provides a control system for cold starting of a range-extended mining truck to solve at least one of the above-mentioned technical problems.

[0006] The technical solution adopted in this application is as follows:

[0007] A control system for cold start of a range-extended mining truck includes: a range extender; a battery management system for acquiring the state of charge (SOC) of the battery pack and the temperature of the battery pack; a thermal management system (TMS) for heating the battery; a battery pack connected to the battery management system; and a coolant temperature acquisition module for acquiring the engine coolant temperature; further comprising:

[0008] The vehicle controller is configured to acquire the maximum value of the driving power of the driving motor in a preset gear and the total vehicle discharge power when the mining truck is climbing a hill unloaded; and is configured to control the mining truck to perform cold starts in different ways according to the different correspondences between the battery temperature, engine coolant temperature, battery SOC and the maximum value of the driving power of the driving motor in a preset gear when the mining truck is climbing a hill unloaded, and the total vehicle discharge power.

[0009] The range extender, battery management system, coolant temperature acquisition module, and TMS temperature management system are all communicatively connected to the vehicle controller.

[0010] The control system for cold start of the range-extended mining truck in this application also has the following additional technical features:

[0011] As an optional implementation, it further includes: a location acquisition module for acquiring the location of the mining truck in real time, connected to the vehicle controller; a gear signal acquisition module for acquiring the real-time gear signal of the mining truck, connected to the vehicle controller; the vehicle controller is further controlled to activate the range extender and output high-voltage electricity from the generator to compensate for the discharge power if the maximum value of the driving power of the driving motor in the preset gear when the mining truck is climbing the slope without load is greater than the vehicle discharge power when the location acquisition module acquires the distance of the mining truck from the first position preset distance.

[0012] As an optional implementation, the preset position is the position where the driving power of the drive motor reaches its maximum value.

[0013] As an optional implementation, the battery management system includes a battery self-heating module, which is configured to control the battery self-heating module to turn on when the battery management system receives a signal that the battery temperature is lower than a first preset temperature and a signal that the battery pack SOC is lower than a preset percentage.

[0014] As an optional implementation, it further includes: a water heating module for heating the battery, which is connected to the vehicle controller and the range extender respectively; when the battery temperature is lower than a first preset temperature, the battery pack SOC is lower than a preset percentage and the engine coolant is higher than a second preset temperature, or when the battery temperature is lower than the first preset temperature and the engine coolant is lower than the second preset temperature, the water heating module is started by the generator of the range extender, and the residual heat of the engine coolant is used to heat the battery.

[0015] As an optional implementation, it also includes an idle warm-up control module, which is connected to the range extender and the vehicle controller, and is used to control the engine idle warm-up when the battery temperature is lower than a first preset temperature and the engine coolant is lower than a second preset temperature.

[0016] Due to the adoption of the above technical solution, the technical effects achieved by this application are as follows:

[0017] The cold start control system for range-extended mining trucks provided in this application includes: a range extender; a battery management system for acquiring the battery pack's state of charge (SOC) and temperature; a battery pack connected to the battery management system; a coolant temperature acquisition module for acquiring the engine coolant temperature; and a vehicle controller configured to acquire the maximum value of the driving motor's power and the vehicle's discharge power in a preset gear when the mining truck is climbing unloaded; and configured to control the mining truck to perform cold starts in different ways based on different correspondences between the battery temperature, engine coolant temperature, battery SOC, the maximum value of the driving motor's power in the preset gear when the mining truck is climbing unloaded, and the vehicle's discharge power; the range extender, battery management system, and coolant temperature acquisition module are respectively communicatively connected to the vehicle controller. Through the above technical solution, the range-extended mining truck can include multiple starting methods; different starting methods can be used to start the truck according to its different states. This solves the problem of insufficient climbing power for electric mining trucks when first powered on in winter mornings in the prior art, optimizes different starting methods, improves the energy transfer efficiency of the entire vehicle, and achieves the purpose of saving fuel and electricity. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural block diagram of a control system for cold start of a range-extended mining truck provided in an embodiment of this application.

[0021] Figure Labels

[0022] 1. Vehicle controller;

[0023] 2 range extenders;

[0024] 3. Battery Management System;

[0025] 4. Coolant temperature acquisition module;

[0026] 5TMS Temperature Management System. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Referring to the background technology, existing technologies often employ single measures to address the insufficient power of mining trucks during cold starts. However, the degree of adjustment required for cold starts differs depending on the conditions. For example, the required adjustment differs between low temperatures (around 0°C) and very low temperatures (around -20°C). Existing technologies often prioritize battery heating, neglecting the impact of battery discharge power on the climbing ability of the electric-driven mining truck during the heating process. Furthermore, for range-extended electric mining trucks that incorporate a range extender as an additional energy source, optimal energy transfer efficiency is crucial for battery heating to enhance their fuel-saving and energy-efficient characteristics.

[0030] In addition, the following technical solutions exist in the existing technology to solve the problem of insufficient power for cold start and ramp climbing of mining trucks:

[0031] One approach is to add physical insulation to the battery. However, this measure inevitably increases the battery's additional cost. Furthermore, when the battery needs to dissipate heat during long-term operation, the presence of insulation material is detrimental to the battery's radiative heat dissipation.

[0032] Second, the battery can be heated by using a plug-in heating method. However, this method requires the construction of a high-voltage charging station in the mine, which increases production costs. In addition, the battery needs to be preheated using the plug-in heating method before starting work, which is time-consuming and affects the efficiency of the kitchen staff.

[0033] Third, a heating film is placed inside the battery. However, this method often requires the battery to consume internal electrical energy to raise the battery temperature. But the decrease in battery SOC will also lead to a decrease in the battery's continuous discharge power.

[0034] Fourth, heating the battery solely through a water heating system often involves consuming the high-voltage electricity within the battery to activate the water heating PTC, which in turn heats the coolant. The coolant then heats the battery through thermal conduction. However, compared to battery self-heating, this method results in greater energy loss during transfer, causing the battery's SOC to drop more rapidly.

[0035] Furthermore, compared to pure electric mining trucks, range-extended mining trucks have lower battery capacity, making it easier to control cell temperature and battery SOC within a reasonable charging and discharging range in a short period. Pure electric mining trucks rely solely on the battery for energy during operation. The charging and discharging performance of the battery is affected by two intrinsic factors: battery SOC and individual cell temperature. In actual operation, the battery SOC and individual cell temperature interact, causing fluctuations in battery charging and discharging power, sometimes even resulting in insufficient power. Range-extended mining trucks, on the other hand, utilize the generator's power generation characteristics and the engine's waste heat to compensate for the battery's shortcomings, thus optimizing the power shortage issue in electric mining trucks.

[0036] In response to the above technical problems, such as Figure 1 As shown, this application provides a control system for cold start of a range-extended mining truck, including: a range extender 2; a battery management system 3 for acquiring the state of charge (SOC) of the battery pack and the temperature of the battery pack; a TMS temperature management system 5 for heating the battery; a battery pack connected to the battery management system 3; a coolant temperature acquisition module 4 for acquiring the engine coolant temperature; and further including:

[0037] Vehicle controller 1: is configured to acquire the maximum value of the driving motor power of the mining truck in a preset gear and the vehicle discharge power when the mining truck is climbing the hill unloaded; and is configured to control the mining truck to perform cold start in different ways according to the different correspondences between the battery temperature, engine coolant temperature, battery SOC and the maximum value of the driving motor power of the mining truck in a preset gear when the mining truck is climbing the hill unloaded and the vehicle discharge power.

[0038] The range extender, battery management system, coolant temperature acquisition module, and TMS temperature management system are all communicatively connected to the vehicle controller.

[0039] Specifically, by connecting the range extender 2, battery management system 3, and coolant temperature acquisition module 4 to the vehicle controller 1, and configuring the vehicle controller 1 to control the mining truck to perform cold starts in different ways based on the different correspondences between battery temperature, engine coolant temperature, battery SOC, and the maximum value of the driving motor drive power in a preset gear when the mining truck is climbing unloaded, and the vehicle's discharge power, this technical solution enables the use of different starting methods according to the different states of the range-extended mining truck. This solves the problem of insufficient climbing power for electrically driven mining trucks when first powered on in winter mornings in existing technologies, optimizes different starting methods, improves the energy transfer efficiency of the entire vehicle, and achieves the goal of saving fuel and electricity.

[0040] As an optional implementation, it further includes: a location acquisition module for real-time acquisition of the mining truck's location, connected to the vehicle controller 1; a gear signal acquisition module for real-time acquisition of the mining truck's gear signal, connected to the vehicle controller 1; the vehicle controller 1 is further controlled to activate the range extender 2 and output high-voltage electricity from the generator to compensate for the discharge power if the maximum value of the driving power of the driving motor in the preset gear when the mining truck is climbing without load is greater than the vehicle's discharge power when the location acquisition module acquires a preset distance between the mining truck and the first position.

[0041] As an optional implementation, the preset position is the position where the driving power of the drive motor reaches its maximum value.

[0042] Specifically, if the driving power of the driving motor reaches its maximum value when the extended-range mining truck travels to a certain point, then that position is set as a preset position. The preset position can be considered as the mining truck reaching a steep slope when climbing without load. At this time, the mining truck has a problem of limited power. Therefore, when the truck is about to reach the preset position when climbing without load, it will be able to respond in advance. The preset locations can be multiple, meaning that the driving motor power may reach its maximum value at various points along different routes. The vehicle's real-time location can be obtained by sending latitude and longitude coordinates to the VCU via the TBOX, and the VCU recording this information on E2. This allows the system to determine the relationship between the maximum driving motor power of the mining truck at a preset gear during unloaded hill climbing and the total vehicle discharge power of the battery when the vehicle is a certain distance from the preset location. If the driving motor power exceeds the total vehicle discharge power, the range extender 2 is activated in advance, allowing the high-voltage electricity generated by the generator to compensate for the discharge power, ensuring that the maximum driving motor power of the mining truck at the preset gear during unloaded hill climbing is less than or equal to the total vehicle discharge power. This embodiment enables the mining truck to anticipate and respond in advance, avoiding the problem of the mining truck being unable to meet operating requirements when reaching a power-limited location. This further improves the practicality and intelligence of the mining truck and effectively solves the problem of power limitation for mining trucks during winter hill climbing.

[0043] Furthermore, it should be noted that this application does not further limit the preset distance, which is related to the response rate of the specific range extender 2 and can be set according to the selection of the specific range extender 2. For example, it can be set to a distance of 100 meters.

[0044] As an optional implementation, the battery management system 3 includes a battery self-heating module, which is configured to control the battery self-heating module to turn on when the battery management system 3 obtains a signal that the battery temperature is lower than a first preset temperature and a signal that the battery pack SOC is lower than a preset percentage.

[0045] Specifically, the self-heating module enables the battery management system 3 to automatically control the battery. When the battery temperature is below a first preset temperature or the battery pack SOC is below a preset percentage, the BMS automatically activates the self-heating module. When the battery temperature is too high, the BMS automatically deactivates the self-heating function. This process does not require control from the vehicle controller 1. The control method is simple.

[0046] As an optional implementation, the TMS temperature management system 5 further includes a water heating module for heating the battery, which is connected to the vehicle controller 1 and the range extender 2 respectively; when the battery temperature is lower than a first preset temperature, the battery pack SOC is lower than a preset percentage and the engine coolant is higher than a second preset temperature, or when the battery temperature is lower than the first preset temperature and the engine coolant is lower than the second preset temperature, the water heating module is started by the generator of the range extender 2, and the residual heat of the engine coolant is used to heat the battery.

[0047] As an optional implementation, it also includes an idle warm-up control module, which is connected to the range extender 2 and the vehicle controller 1, and is used to control the engine idle warm-up when the battery temperature is lower than a first preset temperature and the engine coolant is lower than a second preset temperature.

[0048] Specifically, a water heating module and an idle warm-up module are also provided. When the battery temperature is lower than a first preset temperature, the battery pack SOC is lower than a preset percentage, and the engine coolant is higher than a second preset temperature, or when the battery temperature is lower than the first preset temperature and the engine coolant is lower than the second preset temperature, the water heating module is activated and the residual heat of the engine coolant is used to heat the battery. When the battery temperature is lower than the first preset temperature and the engine coolant is lower than the second preset temperature, the engine idle warm-up is controlled, and the water heating module is activated at the same time.

[0049] Therefore, it can be understood that, through the above settings, the cold start of the mining card can be divided into three startup methods, namely:

[0050] First startup mode: When the battery temperature is lower than a first preset temperature and the battery pack SOC is lower than a preset percentage, the battery self-heating module is activated until the battery temperature reaches a preset exit temperature and / or the remaining battery charge drops to a preset percentage. This can be considered as activating the first startup mode in early winter when the battery temperature is not very low but battery heating is required, and the remaining battery charge is relatively high (e.g., the preset percentage is set to 80%). It can also be configured to control the mining truck to exit the first startup mode when the battery temperature reaches the temperature required to exit heating. However, it should be noted that the first startup mode can be implemented simultaneously with the aforementioned scheme of judging and responding to situations where the mining truck's power is limited at a predetermined distance. For example, after the battery self-heating is completed, if the battery SOC drops during subsequent hill climbing, causing a decrease in the vehicle's discharge power, and the maximum value of the driving motor's power during unloaded hill climbing in the preset gear exceeds the vehicle's discharge power, then the range extender 2 is activated at a predetermined distance (e.g., 100 meters) from the preset location, and the generator power of the range extender 2 compensates for the difference in climbing power.

[0051] Second starting mode: When the battery temperature is lower than the first preset temperature, the battery pack SOC is lower than the preset percentage, and the engine coolant is higher than the second preset temperature, the water heater is turned on, and the residual heat of the engine coolant is used to heat the battery until the battery temperature reaches the preset exit temperature, and the range extender 2 is turned off; The second starting mode can be set when the battery temperature is low, the coolant temperature is not very low, but the vehicle's discharge power is insufficient. At this time, the range extender 2 can be started, controlling the generator to supply power to the water heater PTC, and the battery heating agent in the water heater PTC circuit is heated by heat exchange through the engine coolant temperature in the form of plate heat exchanger. When the battery temperature rises to the temperature at which battery heating is to be exited, the range extender 2 is turned off. Furthermore, the vehicle can also enter a second starting mode while executing the first starting mode. Specifically, if the range-extended mining truck is running in the first starting mode and the remaining battery charge drops to a preset minimum charge level, the battery's state of charge (SOC) drops rapidly during self-heating while the battery temperature rises slowly. Continuing to use battery self-heating may lead to battery depletion and power interruption during hill climbing. Therefore, when the battery charge drops to a certain value before battery heating is complete, the second starting mode is used for heating. Additionally, if the vehicle is approaching a preset position during heating, the PTC water heater can be shut off at a preset distance from the preset position, retaining the engine's residual heat for heating, and the range extender 2 can be used to generate electricity to compensate for insufficient battery power. Simultaneously, the vehicle can also enter the second starting mode while executing the third starting mode: after the engine has completed idling warm-up, the generator is controlled to supply power to the PTC water heater at the rated voltage of the high-voltage PTC, and the battery is heated by heat exchange using the residual heat of the engine coolant until the battery reaches the minimum temperature required to exit battery heating, at which point the range extender 2 is shut off.

[0052] The third starting mode: When the battery temperature is lower than the first preset temperature and the engine coolant temperature is lower than the second preset temperature, the engine is controlled to idle and warm up, and the generator is controlled to supply power to the water-cooled PTC until the battery temperature reaches the preset exit temperature and / or the engine idle warm-up ends. When the vehicle's operating ambient temperature, battery temperature, and engine coolant temperature are all very low, the third starting mode can be activated. In this case, if the range extender 2 is controlled to supply power to the water-cooled PTC, the engine speed is low, and the speed of the generator driven by its coaxial shaft is also low. Therefore, the generated voltage is insufficient to reach the rated voltage of the high-voltage water-cooled PTC. Thus, the battery SOC can be disregarded at this time, because even with a high charge, the large battery temperature is too low to discharge. The engine is first controlled to idle and warm up, and the generator at a certain speed supplies power to the water-cooled PTC. Simultaneously, when the vehicle is started using the third starting mode, if the heating process is close to the preset position, the water-cooled PTC heating can be turned off at a preset distance from the preset position, retaining the residual engine heat for heating, and the range extender 2 is used to generate electricity to compensate for the insufficient battery power.

[0053] Furthermore, for example, when the range-extended mining truck is running in the second start-up mode, and the battery temperature reaches a preset exit temperature... ： If the remaining battery power is lower than the second preset remaining power, the maximum sustainable power generation value of the range extender 2 is compared with the maximum driving power of the driving motor of the mining truck when climbing a hill without load in the preset gear. If the maximum sustainable power generation value is greater than the maximum driving power of the driving motor of the mining truck when climbing a hill without load in the preset gear, the battery is controlled to stop discharging, and the discharge power of the range extender 2 is controlled according to the throttle opening, and the battery is charged at the preset power. If the maximum sustainable power generation value is less than the maximum driving power of the driving motor of the mining truck when climbing a hill without load in the preset gear, a signal is output to prompt the driver to stop and charge the battery.

[0054] It should be noted that the first preset temperature can be selected within the range of 15℃-30℃, preferably 25℃, and the second preset temperature can be selected within the range of 35-50℃, preferably 40℃. The preset percentage can be selected within the range of 75%-85%, preferably 80%. In the above embodiment, stopping battery charging when the remaining battery power reaches the preset percentage can prevent overcharging and protect the battery. This solves the technical problem while improving battery life, thereby reducing the operating cost of the mining card.

[0055] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] The technical solutions of this application have been described in conjunction with the preceding embodiments. However, it will be readily understood by those skilled in the art that the scope of protection of this application is not limited to these specific embodiments. Without departing from the technical principles of this application, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this application will fall within the scope of protection of this application.

[0058] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0059] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A control system for cold start of a range-extended mining truck, characterized in that, Comprising: a range extender; a battery management system for obtaining a battery pack SOC and a temperature of the battery pack; a TMS temperature management system for heating the battery, comprising: a water heating module; a battery pack connected to the battery management system; a coolant temperature obtaining module for obtaining an engine coolant temperature; an idle warming control module for controlling engine idle warming; Further comprising:

2. The control system for cold start of a range extended mine truck according to claim 1, wherein, a vehicle controller configured to obtain a maximum value of a driving motor driving power at a preset gear when a mine truck is empty and climbing uphill and a vehicle discharge power, and configured to control the mine truck to be cold started in different ways according to different corresponding relationships between the battery temperature, the engine coolant temperature, the battery SOC, and the maximum value of the driving motor driving power at the preset gear when the mine truck is empty and climbing uphill and the vehicle discharge power. The range extender, the battery management system, the TMS temperature management system, the coolant temperature obtaining module, and the idle warming control module are respectively in communication connection with the vehicle controller.

3. The control system for cold start of the range extended mine truck of claim 2, wherein, Further comprising:

4. The control system for cold start of a range extended mine truck of claim 1, wherein, a position obtaining module for obtaining a real-time position of the mine truck, connected to the vehicle controller; and a gear signal obtaining module for obtaining a real-time gear signal of the mine truck, connected to the vehicle controller; the vehicle controller is further controlled to control the range extender to start and the generator to output high-voltage electricity to make up for the discharge power if the maximum value of the driving motor driving power at the preset gear when the mine truck is empty and climbing uphill is greater than the vehicle discharge power when the position obtaining module obtains that the mine truck is at a preset distance from a first position.

5. The control system for cold start of the range extended mine truck of claim 1, wherein, The preset distance is a position where the driving motor driving power reaches a maximum value.

6. The control system for cold start of a range extended mine truck of claim 1, wherein, The battery management system comprises a battery self-heating module configured to control the battery self-heating module to start when the battery management system obtains a signal that the battery temperature is lower than a first preset temperature and a signal that the battery pack SOC is lower than a preset percentage. The TMS temperature management system further comprises a water heating module for heating the battery, connected to the vehicle controller and the range extender respectively; the water heating module is started by the generator of the range extender and the engine coolant residual heat is controlled to heat the battery when the battery temperature is lower than the first preset temperature, the battery pack SOC is lower than the preset percentage, and the engine coolant temperature is higher than a second preset temperature, or when the battery temperature is lower than the first preset temperature and the engine coolant temperature is lower than the second preset temperature. Further comprising an idle warming control module connected to the range extender and the vehicle controller, for controlling the engine idle warming when the battery temperature is lower than the first preset temperature and the engine coolant temperature is lower than the second preset temperature.

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