Hot and Cold Automatic Control Device and Method for Mobile Industrial Power Supply

Abstract

The present invention discloses a cold and heat automatic control device and method for a mobile industrial power supply, which includes a device box body (11), a heat preservation and heat dissipation component, a heat pipe cooling component, an auxiliary heating system (14), a ventilation component and a central controller (44); a battery pack (41) is arranged inside the device box body, several groups of heat pipe cooling components are respectively and spacedly embedded on the box wall of the device box body, and one end of the heat pipe cooling component is located inside the device box body, and the other end of the heat pipe cooling component penetrates to the outside of the device box body; the auxiliary heating system is arranged on the inner wall of the heat preservation and heat dissipation component, and the ventilation component is installed on the box wall of the device box body; the central controller is arranged inside the device box body and is electrically connected to the battery pack, and the output end of the central controller is electrically connected to the heat preservation and heat dissipation component, the heat pipe cooling component, the auxiliary heating system and the ventilation component. The present invention can take into account the functions of winter heat preservation and summer heat dissipation, and can ensure the actual use capacity and service life of the battery under extreme weather conditions.

Description

Technical Field

[0001] The present invention relates to a battery thermal insulation device and method, and particularly to a cold and heat automatic control device and method for a mobile industrial power supply. Background Art

[0002] The usage environment of industrial power supplies is usually relatively harsh. For lithium iron phosphate batteries, the external environmental temperature for battery operation is required to be between 0°C and 55°C, and the discharge operating temperature range is between -20°C and 60°C. Excessive or too low temperature will affect the battery performance and even cause permanent damage to the battery, which limits the use of batteries in extreme environments, especially in application scenarios with high temperatures in summer and low temperatures in winter.

[0003] The existing industrial power supply devices cannot balance the functions of winter heat preservation and summer heat dissipation. In addition, on the one hand, the current renewable energy power generation is developing rapidly. Taking the photovoltaic and wind power generation power stations in the northwest desert as an example, to ensure the stability of renewable energy power supply, a certain capacity of energy storage devices needs to be configured. However, due to the huge temperature differences between day and night / winter and summer, the actual usable capacity and life of the batteries are greatly reduced; on the other hand, for construction in areas with large temperature differences between day and night / winter and summer, due to the high cost of temporary power, mobile industrial power supplies need to be used for power supply, but the mobile industrial power supplies also have the above problems during actual use. Therefore, there is a need to provide a cold and heat automatic control device and method for a mobile industrial power supply that can balance the functions of winter heat preservation and summer heat dissipation and ensure the actual usable capacity and life of the battery in extreme weather. Summary of the Invention

[0004] The purpose of the present invention is to provide a cold and heat automatic control device and method for a mobile industrial power supply, which can balance the functions of winter heat preservation and summer heat dissipation and ensure the actual usable capacity and life of the battery in extreme weather.

[0005] The present invention is implemented as follows:

[0006] A cold and heat automatic control device for a mobile industrial power supply includes a device box body, a heat preservation and heat dissipation component, a heat pipe cooling component, an auxiliary heating system, a ventilation component, and a central controller; a battery pack is arranged in the device box body, several groups of heat pipe cooling components are respectively and spacedly embedded in the box wall of the device box body, and one end of the heat pipe cooling component is located inside the device box body, and the other end of the heat pipe cooling component penetrates to the outside of the device box body; the auxiliary heating system is arranged on the inner wall of the heat preservation and heat dissipation component, and the ventilation component is installed on the box wall of the device box body; the central controller is arranged in the device box body and is electrically connected to the battery pack, and the output end of the central controller is electrically connected to the heat preservation and heat dissipation component, the heat pipe cooling component, the auxiliary heating system, and the ventilation component.

[0007] The described heat insulation and heat dissipation component includes a heat insulation layer and a heat dissipation mechanism; the heat insulation layer is attached to the inner wall of the device box body, and a gap is formed inside the heat insulation layer; the heat dissipation mechanism is arranged inside the device box body, and the output end of the heat dissipation mechanism is communicated with the gap.

[0008] The described heat dissipation mechanism includes a circulation pump, a water tank, a pipeline and a water distribution pipe; the water tank is placed on the inner bottom surface of the device box body, and the water tank is filled with clean water; one end of the pipeline is inserted below the water surface in the water tank, and the other end of the pipeline extends to the top of the device box body and is communicated with the gap through a plurality of water distribution pipes; the circulation pump is arranged on the pipeline, and the circulation pump is electrically connected to the central controller.

[0009] The described heat pipe cooling component includes a heat pipe, a vaporization cooling solution and a shut-off valve; both ends of the heat pipe are closed, the heat pipe is obliquely installed on the box wall of the device box body, both ends of the heat pipe are respectively located inside and outside the device box body, and the outer end of the heat pipe is higher than the inner end; the vaporization cooling solution is arranged inside the heat pipe, and the vaporization temperature of the vaporization cooling solution is within the charge and discharge operating temperature range of the battery pack; the shut-off valve is arranged on the heat pipe and is located inside the device box body, the shut-off valve is electrically connected to the central controller, and when the vaporization cooling solution is in a liquid state, it is closed in the device box body through the shut-off valve, and when the vaporization cooling solution is in a gaseous state, it fills the entire heat pipe.

[0010] The described ventilation component includes a ventilation opening and a ventilator; the ventilation opening is installed at the bottom of the device box body, the ventilator is installed at the top of the device box body, the ventilation opening and the ventilator are located beside the battery pack, and a mechanical ventilation mode of bottom air intake and top air exhaust is formed; air valves are installed in the ventilation opening and the ventilator, and the air valves, the ventilation opening and the ventilator are electrically connected to the central controller.

[0011] A fire extinguishing device is arranged inside the device box body, and the fire extinguishing device is located above the battery pack and is electrically connected to the central controller.

[0012] A hot and cold self-control method for a hot and cold self-control device of a mobile industrial power supply includes the following steps:

[0013] Step 1: A first sensor is arranged inside the battery pack and is electrically connected to the central controller for collecting the internal temperature Te' of the battery in the battery pack; a second sensor is arranged inside the device box body and is electrically connected to the central controller for collecting the internal temperature Tn of the device box body; a third sensor is arranged outside the device box body and is electrically connected to the central controller for collecting the external temperature Tw of the device box body; and the charging temperature range, the discharging temperature range, the minimum temperature threshold, the maximum temperature threshold and the extreme temperature threshold of the battery pack, and the internal temperature range of the device box body are preset.

[0014] Step 2: The central controller collects the internal battery temperature Te’, the internal box temperature Tn, the external box temperature Tw, and the working state A of the battery pack in real time, and calculates the average value Te of the internal battery temperature Te’;

[0015] Step 3: The central controller determines whether the working state A of the battery pack is 0. If not, it proceeds to Step 4; if so, it proceeds to Step 15;

[0016] Step 4: The central controller determines whether the average value Te exceeds the charging temperature range. If so, it proceeds to Step 5; if not, it proceeds to Step 9;

[0017] Step 5: The central controller determines whether the average value Te is less than or equal to the minimum value of the charging temperature range. If so, it proceeds to Step 6; if not, it proceeds to Step 12.

[0018] Step 6: The central controller determines whether the average value Te is greater than or equal to the lowest temperature threshold. If so, it proceeds to Step 7; if not, it proceeds to Step 8;

[0019] Step 7: The central controller controls the shut-off valve of the heat pipe cooling component to close, the vents and the fan of the ventilation component to close, the circulation pump of the heat dissipation mechanism in the thermal insulation and heat dissipation component to close, and the auxiliary heating system to turn off, and then returns to Step 2;

[0020] Step 8: The central controller controls the shut-off valve of the heat pipe cooling component to close, the vents and the fan of the ventilation component to close, the circulation pump of the heat dissipation mechanism in the thermal insulation and heat dissipation component to close, and the auxiliary heating system to turn on, and then returns to Step 2;

[0021] Step 9: The central controller determines whether the internal box temperature Tn is outside the internal temperature range of the device box. If so, it proceeds to Step 10; if not, it proceeds to Step 17;

[0022] Step 10: The central controller determines whether the internal box temperature Tn is less than the minimum value of the internal temperature range. If so, it proceeds to Step 7; if not, it proceeds to Step 11;

[0023] Step 11: The central controller controls the shut-off valve of the heat pipe cooling component to open, the vents and the fan of the ventilation component to close, the circulation pump of the heat dissipation mechanism in the thermal insulation and heat dissipation component to close, and the auxiliary heating system to turn off, and then returns to Step 2;

[0024] Step 12: The central controller determines whether the average value Te is greater than or equal to the highest temperature threshold. If so, it proceeds to Step 13; if not, it proceeds to Step 11;

[0025] Step 13: The central controller determines one by one whether the internal battery temperature Te’ collected by all the first sensors is greater than the extreme temperature threshold. If any internal battery temperature Te is greater than the extreme temperature threshold, the central controller controls the fire extinguishing device to start and ends the cooling and heating automatic control process. Otherwise, step 14 is executed;

[0026] Step 14: The central controller opens the shut-off valve of the heat pipe cooling component, opens the ventilation opening and the ventilator of the ventilation component, and opens the circulation pump of the heat dissipation mechanism in the heat preservation and heat dissipation component, and shuts down the auxiliary heating system, then returns to step 2;

[0027] Step 15: The central controller determines whether the average value Te exceeds the discharge temperature range. If so, step 16 is executed. If not, step 9 is executed;

[0028] Step 16: The central controller determines whether the average value Te is less than or equal to the minimum value of the discharge temperature range. If so, step 6 is executed. If not, step 13 is executed;

[0029] Step 17: The central controller circulates the cooling and heating automatic control process every interval period T;

[0030] Step 18: Determine whether the cooling and heating automatic control device is actively closed. If so, the cooling and heating automatic control process ends. If not, return to step 2.

[0031] The charging temperature range of the battery pack is 23°C to 27°C, the discharge temperature range is 15°C to 35°C, the minimum temperature threshold is 10°C, the maximum temperature threshold is 35°C, and the internal temperature range of the device box is 10°C to 40°C.

[0032] The working state A of the battery pack includes a charging state and a discharging state. When in the charging state, A = 1, and when in the discharging state, A = 0.

[0033] In step 18, the condition for actively closing the cooling and heating automatic control device is manual shutdown.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. By monitoring the internal temperature of the box, the external temperature of the box, the internal temperature of the battery, and the charging and discharging working states of the battery pack, and using the logical control of the central controller, the present invention can adopt different cooling or heating measures in different scenarios to ensure that the battery pack always operates in an efficient and safe temperature range, and can ensure the actual use capacity and life of the battery even in extreme weather. At the same time, it can minimize the additional energy consumption caused by the cooling and heating automatic control, minimize the energy consumption ratio of the entire device, and the effective utilization rate of the electric energy of the battery pack reaches more than 90%.

[0036] 2. Since the present invention is provided with a heat preservation and heat dissipation component, a heat pipe cooling component, an auxiliary heating system and a ventilation component, it can take into account the functions of heat preservation and heating in winter and heat dissipation in summer, effectively extend the usage environment of lithium iron phosphate batteries, and can also normally charge and discharge at an external environmental temperature of -40 to 55°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a partial cross-sectional view of the hot and cold automatic control device of the mobile industrial power supply of the present invention;

[0038] Figure 2 is a flowchart of the hot and cold automatic control method of the mobile industrial power supply of the present invention.

[0039] In the figure, 11 is the device box body, 12 is the heat preservation layer, 13 is the gap, 14 is the auxiliary heating system, 21 is the heat pipe, 22 is the vaporization cooling solution, 23 is the shut-off valve, 31 is the circulation pump, 32 is the water tank, 33 is the clear water, 34 is the pipeline, 35 is the water distribution pipe, 41 is the battery pack, 42 is the fire extinguishing device, 44 is the central controller, 61 is the ventilation opening, and 62 is the ventilator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] Please refer to the attached Figure 1 , a hot and cold automatic control device for a mobile industrial power supply, comprising a device box body 11, a heat preservation and heat dissipation component, a heat pipe cooling component, an auxiliary heating system 14, a ventilation component and a central controller 44; the battery pack 41 is arranged inside the device box body 11, and several groups of heat pipe cooling components are respectively and spacedly embedded on the box wall of the device box body 11, and one end of the heat pipe cooling component is located inside the device box body 11, and the other end of the heat pipe cooling component penetrates to the outside of the device box body 11; the auxiliary heating system 14 is arranged on the inner wall of the heat preservation and heat dissipation component, and the ventilation component is installed on the box wall of the device box body 11; the central controller 44 is arranged inside the device box body 11 and is electrically connected to the battery pack 41, and the output end of the central controller 44 is electrically connected to the heat preservation and heat dissipation component, the heat pipe cooling component, the auxiliary heating system 14 and the ventilation component.

[0042] Preferably, the auxiliary heating system 14 can adopt a semiconductor heating film, and the surface temperature of the semiconductor heating film is less than 34°C. The device box body 11 is heated by an electric heating method, which can ensure that the environmental temperature inside the device box body 11 meets the charging and discharging requirements of the battery pack 41 in extremely cold conditions.

[0043] The thermal insulation and heat dissipation component can provide thermal insulation and heat dissipation functions for the device box body 11, and the heat pipe cooling component and the ventilation component can provide further heat dissipation functions for the device box body 11. The central controller 44 can adopt a computer control chip, a PLC controller, etc. of the existing technology, and control the on and off of the thermal insulation and heat dissipation component, the heat pipe cooling component, the auxiliary heating system 14 and the ventilation component through a logic program, so as to realize the heat dissipation and thermal insulation heating functions in the device box body 11, and further enable the battery pack 41 to always operate in a safe and efficient ambient temperature, which is beneficial to improving the charge and discharge efficiency and service life of the battery pack 41, and expanding the applicable scenarios of the battery pack 41 of the mobile industrial power supply.

[0044] The described thermal insulation and heat dissipation component includes a thermal insulation layer 12 and a heat dissipation mechanism; the thermal insulation layer 12 is attached to the inner wall of the device box body 11, and a gap 13 is formed inside the thermal insulation layer 12; the heat dissipation mechanism is arranged in the device box body 11, and the output end of the heat dissipation mechanism is communicated with the gap 13.

[0045] Preferably, the thermal insulation layer 12 can be made of rubber and plastic thermal insulation material and attached to the inner wall of the device box body 11 to play a good role in thermal insulation.

[0046] The described heat dissipation mechanism includes a circulation pump 31, a water tank 32, a pipeline 34 and a water distribution pipe 35; the water tank 32 is placed on the inner bottom surface of the device box body 11, and the water tank 32 is filled with clear water 33; one end of the pipeline 34 is inserted below the water surface in the water tank 32, and the other end of the pipeline 34 extends to the top of the device box body 11 and is communicated with the gap 13 through a plurality of water distribution pipes 35; the circulation pump 31 is arranged on the pipeline 34, and the circulation pump 31 is electrically connected to the central controller 44.

[0047] When working in a low-temperature environment in winter, keep the inside of the thermal insulation layer 12 dry, reduce the heat transfer coefficient, and enhance the thermal insulation effect. When working in a high-temperature environment in summer, use the circulation pump 31 to transport the clear water 33 in the water tank 32 to the water distribution pipe 35 at the top of the device box body 11 through the pipeline 34, and fully infiltrate the thermal insulation layer 12 made of rubber and plastic thermal insulation material along the gap 13 to increase the heat transfer coefficient of the thermal insulation layer 12 and enhance the heat dissipation effect.

[0048] Preferably, the water tank 32 is a closed water tank to prevent the clear water 33 from spilling and affecting the operation safety of the battery pack 41. The capacity of the water tank 32 can be determined according to the infiltration area of the thermal insulation layer 12. The circulation pump 31 can adopt a micro water pump for pumping the clear water 33 in the water tank 32 to the water distribution pipe 35 at the top of the device box body 11.

[0049] The described heat pipe cooling component includes a heat pipe 21, a vaporizing cooling solution 22, and a shut-off valve 23; both ends of the heat pipe 21 are closed, the heat pipe 21 is obliquely installed in the box wall of the device box 11, both ends of the heat pipe 21 are respectively located inside and outside the device box 11, and the outer end of the heat pipe 21 is higher than the inner end; the vaporizing cooling solution 22 is arranged inside the heat pipe 21, and the vaporization temperature of the vaporizing cooling solution 22 is within the charge and discharge operating temperature range of the battery pack 41; the shut-off valve 23 is arranged on the heat pipe 21 and is located inside the device box 11, the shut-off valve 23 is electrically connected to the central controller 44, and when the vaporizing cooling solution 22 is in a liquid state, it is enclosed inside the device box 11 through the shut-off valve 23, and when the vaporizing cooling solution 22 is in a gaseous state, it fills the entire heat pipe 21.

[0050] Preferably, the vaporizing cooling solution 22 can adopt a mixed solution with a boiling point of 30°C to 35°C under negative pressure. When the device works in a high-temperature environment in summer, the shut-off valve 23 is opened. When the internal temperature of the heat pipe 21 is greater than the boiling point temperature, such as 30°C, the vaporizing cooling solution 22 vaporizes into a gas and fills the entire space of the heat pipe 21. The end of the heat pipe 21 located outside the device box 11 exchanges heat with the outdoor air, causing the gas to condense into a liquid, and then flowing down along the inner wall of the heat pipe 21 back to the end of the heat pipe 21 located inside the device box 11; repeating this cycle can achieve zero-energy consumption and rapid heat dissipation inside and outside the device box 11. When the device works in a low-temperature environment in winter, on the one hand, the temperature is relatively low, and the mixed solution 22 cannot vaporize, resulting in a greatly reduced heat exchange efficiency. On the other hand, the shut-off valve 23 is closed to cut off the gas convection inside and outside the device box 11, thereby minimizing the heat loss inside the device box 11 to the greatest extent.

[0051] The described ventilation component includes a ventilation opening 61 and a ventilator 62; the ventilation opening 61 is installed at the bottom of the device box 11, the ventilator 62 is installed at the top of the device box 11, the ventilation opening 61 and the ventilator 62 are located beside the battery pack 41, and form a mechanical ventilation mode of bottom air intake and top air exhaust; air valves are installed inside the ventilation opening 61 and the ventilator 62, and the air valves, the ventilation opening 61, and the ventilator 62 are electrically connected to the central controller 44.

[0052] Through the ventilation opening 61 at the bottom and the ventilator 62 at the top, a mechanical ventilation mode of bottom air intake and top air exhaust is realized. The air valves, the ventilation opening 61, and the ventilator 62 are synchronously opened and closed under the control of the central controller 44, so as to quickly ventilate and cool the inside of the device box 11 and ensure the safe operation of the battery pack 41.

[0053] A fire extinguishing device 42 is arranged inside the device box 11, and the fire extinguishing device 42 is located above the battery pack 41 and is electrically connected to the central controller 44.

[0054] Preferably, the fire extinguishing device 42 can adopt an existing foam fire extinguisher, etc. After being started, it can extinguish the fire and cool down the battery pack 41 to prevent the battery pack 41 from catching fire and burning.

[0055] Please refer to the attached Figure 1 and the attached Figure 2 , a method for self - controlling the temperature of a mobile industrial power supply, comprising the following steps:

[0056] Step 1: Set a first sensor (not shown in the figure) inside the battery pack 41 and electrically connect it to the central controller 44 for collecting the internal temperature Te' of the battery inside the battery pack 41; set a second sensor (not shown in the figure) inside the device box 11 and electrically connect it to the central controller 44 for collecting the internal temperature Tn of the device box 11; set a third sensor (not shown in the figure) outside the device box 11 and electrically connect it to the central controller 44 for collecting the external temperature Tw of the device box 11; and preset the charging temperature range, discharging temperature range, minimum temperature threshold, maximum temperature threshold and extreme temperature threshold of the battery pack 41, and the internal temperature range of the device box 11.

[0057] Preferably, the charging temperature range of the battery pack 41 is 23°C to 27°C, the discharging temperature range is 15°C to 35°C, the minimum temperature threshold is 10°C, the maximum temperature threshold is 35°C, the extreme temperature threshold is 65°C, and the internal temperature range of the device box 11 is 10°C to 40°C.

[0058] Preferably, the first sensor, the second sensor and the third sensor can adopt temperature sensors of the existing technology, which are respectively used for collecting the internal temperature Te' of the battery inside the battery pack 41, the internal temperature Tn of the device box 11 and the external temperature Tw of the device box 11. The number and arrangement position of the sensors can be adaptively adjusted according to the capacity of the battery pack 41, the size of the device box 11, the actual working conditions, etc.

[0059] Step 2: The central controller 44 collects the internal temperature Te' of the battery, the internal temperature Tn of the box, the external temperature Tw of the box and the working state A of the battery pack 41 in real - time, and calculates the average value Te of the internal temperature Te' of the battery.

[0060] The working state A of the battery pack 41 includes a charging state and a discharging state. When in the charging state, A = 1, and when in the discharging state, A = 0.

[0061] Step 3: The central controller 44 determines whether the working state A of the battery pack 41 is 0. If not, then execute Step 4; if so, then execute Step 15.

[0062] Step 4: The central controller 44 determines whether the average value Te exceeds the charging temperature range, that is, Te ≤ 23°C or Te ≥ 27°C. If so, then execute Step 5; if not, then execute Step 9.

[0063] Step 5: The central controller 44 determines whether the average value Te is less than or equal to the minimum value of the charging temperature range, i.e., Te ≤ 23°C. If so, step 6 is executed; if not, step 12 is executed.

[0064] Step 6: The central controller 44 determines whether the average value Te is greater than or equal to the lowest temperature threshold, i.e., Te ≥ 10°C. If so, step 7 is executed; if not, step 8 is executed.

[0065] Step 7: The central controller 44 controls the shut-off valve 23 of the heat pipe cooling component to close, the vent 61 and the ventilator 62 of the ventilation component to close, the circulation pump 31 of the heat dissipation mechanism in the heat preservation and heat dissipation component to close, and the auxiliary heating system 14 to close, and returns to step 2.

[0066] Step 8: The central controller 44 controls the shut-off valve 23 of the heat pipe cooling component to close, the vent 61 and the ventilator 62 of the ventilation component to close, the circulation pump 31 of the heat dissipation mechanism in the heat preservation and heat dissipation component to close, and the auxiliary heating system 14 to turn on, and returns to step 2.

[0067] Step 9: The central controller 44 determines whether the internal temperature Tn of the box body is not within the internal temperature range of the device box body 11, i.e., Tn < 10°C or Tn > 40°C. If so, step 10 is executed; if not, step 17 is executed.

[0068] Step 10: The central controller 44 determines whether the internal temperature Tn of the box body is less than the minimum value of the internal temperature range, i.e., Tn < 10°C. If so, step 7 is executed; if not, step 11 is executed.

[0069] Step 11: The central controller 44 controls the shut-off valve 23 of the heat pipe cooling component to open, the vent 61 and the ventilator 62 of the ventilation component to close, the circulation pump 31 of the heat dissipation mechanism in the heat preservation and heat dissipation component to close, and the auxiliary heating system 14 to close, and returns to step 2.

[0070] Step 12: The central controller 44 determines whether the average value Te is greater than or equal to the highest temperature threshold, i.e., Te ≥ 35°C. If so, step 13 is executed; if not, step 11 is executed.

[0071] Step 13: The central controller 44 determines one by one whether the internal temperature Te' of the battery collected by all the first sensors is greater than the extreme temperature threshold, i.e., Te > 65°C. If any internal temperature Te of the battery is greater than the extreme temperature threshold, the central controller 44 controls the fire extinguishing device 42 to start and ends the cold and heat automatic control process; otherwise, step 14 is executed.

[0072] Step 14: The central controller 44 opens the shut-off valve 23 of the heat pipe cooling component, opens the ventilation opening 61 and the ventilator 62 of the ventilation component, starts the circulation pump 31 of the heat dissipation mechanism in the heat preservation and heat dissipation component, closes the auxiliary heating system 14, and returns to Step 2.

[0073] Step 15: The central controller 44 determines whether the average value Te exceeds the discharge temperature range, that is, Te ≤ 15°C or Te ≥ 35°C. If so, Step 16 is executed; if not, Step 9 is executed.

[0074] Step 16: The central controller 44 determines whether the average value Te is less than or equal to the minimum value of the discharge temperature range, that is, Te ≤ 15°C. If so, Step 6 is executed; if not, Step 13 is executed.

[0075] Step 17: The central controller 44 cycles the cold and heat automatic control process every interval period T.

[0076] Preferably, the period T can be set to 1 minute, or other time lengths can be selected according to actual control requirements.

[0077] Step 18: Determine whether to actively close the cold and heat automatic control device. If so, the cold and heat automatic control process ends; if not, return to Step 2.

[0078] In the above-mentioned Step 18, the condition for actively closing the cold and heat automatic control device is manual closing.

[0079] The central controller 44 collects the internal temperature Tn of the device box 11 of the acquisition device box, the external temperature Tw of the device box 11 of the device, the internal temperature Te of the battery inside the battery pack 41, and obtains the working state A of the battery pack 41, that is, the charge and discharge state, through the battery management system. Taking the temperature range under the charge and discharge state of the battery pack 41 as the primary comparison object and the internal temperature Tn of the device box 11 of the device as the secondary comparison object, it sets the temperature range and threshold for starting / turning off different cooling / heating measures, and according to the relative relationship between the internal temperature Te of the battery and the temperature limit, and the relative relationship between the internal temperature Tn of the device box and the temperature limit, it turns on different heating / cooling measures to maintain the battery pack 41 working in the most suitable temperature range with the smallest energy consumption ratio, extend the use environment of the battery pack 41, and increase the service life of the battery pack 41.

[0080] The energy consumption ratio refers to the proportion of the electric energy used for the cold and heat automatic control device in the entire battery device in a typical cycle to the battery capacity, which is defined as EPUE = CC / ((CC - q)). In the formula, EPUE refers to the battery energy consumption ratio. The closer EPUE is to 1, the higher the efficiency of the cold and heat automatic control device; CC refers to the capacity of the battery pack 41, with the unit of kWh; q refers to the energy consumption of the cold and heat automatic control device, with the unit of kWh.

[0081] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A thermal control device for a mobile industrial power supply, characterized in that: It includes a device box body (11), a heat preservation and heat dissipation component, a heat pipe cooling component, an auxiliary heating system (14), a ventilation component and a central controller (44); a battery pack (41) is arranged inside the device box body (11), several groups of heat pipe cooling components are respectively and spacedly embedded on the box wall of the device box body (11), and one end of the heat pipe cooling component is located inside the device box body (11), and the other end of the heat pipe cooling component penetrates to the outside of the device box body (11); the auxiliary heating system (14) is arranged on the inner wall of the heat preservation and heat dissipation component, and the ventilation component is installed on the box wall of the device box body (11); the central controller (44) is arranged inside the device box body (11) and is electrically connected to the battery pack (41), and the output end of the central controller (44) is electrically connected to the heat preservation and heat dissipation component, the heat pipe cooling component, the auxiliary heating system (14) and the ventilation component; The heat preservation and heat dissipation component includes a heat preservation layer (12) and a heat dissipation mechanism; the heat preservation layer (12) is attached to the inner wall of the device box body (11), and a gap (13) is formed inside the heat preservation layer (12); the heat dissipation mechanism is arranged inside the device box body (11), and the output end of the heat dissipation mechanism is communicated with the gap (13); The heat dissipation mechanism includes a circulation pump (31), a water tank (32), a pipeline (34) and a water distribution pipe (35); the water tank (32) is placed on the inner bottom surface of the device box body (11), and the water tank (32) is filled with clear water (33); one end of the pipeline (34) is inserted below the water surface in the water tank (32), and the other end of the pipeline (34) extends to the top of the device box body (11) and is communicated with the gap (13) through several water distribution pipes (35); the circulation pump (31) is arranged on the pipeline (34), and the circulation pump (31) is electrically connected to the central controller (44); The heat pipe cooling component includes a heat pipe (21), a vaporization cooling solution (22) and a shut-off valve (23); both ends of the heat pipe (21) are closed, the heat pipe (21) is obliquely embedded on the box wall of the device box body (11), both ends of the heat pipe (21) are respectively located inside and outside the device box body (11), and the outer end of the heat pipe (21) is higher than the inner end; the vaporization cooling solution (22) is arranged inside the heat pipe (21), and the vaporization temperature of the vaporization cooling solution (22) is within the charge and discharge operating temperature range of the battery pack (41); the shut-off valve (23) is arranged on the heat pipe (21) and is located inside the device box body (11), the shut-off valve (23) is electrically connected to the central controller (44), and when the vaporization cooling solution (22) is in a liquid state, it is sealed inside the device box body (11) through the shut-off valve (23), and when the vaporization cooling solution (22) is in a gaseous state, it fills the entire heat pipe (21); The ventilation component includes a ventilation opening (61) and a ventilator (62); The vent (61) is installed at the bottom of the device box body (11), and the ventilator (62) is installed at the top of the device box body (11). The vent (61) and the ventilator (62) are located beside the battery pack (41), and form a mechanical ventilation mode with air intake from the bottom and exhaust from the top; air valves are installed in the vent (61) and the ventilator (62), and the air valves, the vent (61) and the ventilator (62) are electrically connected to the central controller (44); A fire extinguishing device (42) is provided inside the device box body (11), and the fire extinguishing device (42) is located above the battery pack (41) and is electrically connected to the central controller (44).

2. The cooling and heating automatic control method of the cooling and heating automatic control device of the mobile industrial power supply according to claim 1, characterized in that: It includes the following steps: Step 1: A first sensor is arranged inside the battery pack (41) and electrically connected to the central controller (44) for collecting the internal battery temperature Te' of the battery pack (41); a second sensor is arranged inside the device box body (11) and electrically connected to the central controller (44) for collecting the internal temperature Tn of the box body of the device box body (11); a third sensor is arranged outside the device box body (11) and electrically connected to the central controller (44) for collecting the external temperature Tw of the box body of the device box body (11); and the charging temperature range, the discharging temperature range, the minimum temperature threshold, the maximum temperature threshold and the extreme temperature threshold of the battery pack (41), and the internal temperature range of the device box body (11) are preset; Step 2: The central controller (44) collects the internal battery temperature Te', the internal temperature Tn of the box body, the external temperature Tw of the box body and the working state A of the battery pack (41) in real time, and calculates the average value Te of the internal battery temperature Te'. Step 3: The central controller (44) judges whether the working state A of the battery pack (41) is 0. If not, step 4 is executed; if so, step 15 is executed; Step 4: The central controller (44) judges whether the average value Te exceeds the charging temperature range. If so, step 5 is executed; if not, step 9 is executed; Step 5: The central controller (44) judges whether the average value Te is less than or equal to the minimum value of the charging temperature range. If so, step 6 is executed; if not, step 12 is executed; Step 6: The central controller (44) judges whether the average value Te is greater than or equal to the minimum temperature threshold. If so, step 7 is executed; if not, step 8 is executed; Step 7: The central controller (44) controls the shut-off valve (23) of the heat pipe cooling component to close, the vents (61) and the ventilator (62) of the ventilation component to close, the circulation pump (31) of the heat dissipation mechanism in the heat preservation and heat dissipation component to close, and the auxiliary heating system (14) to close, and returns to step 2; Step 10: The central controller (44) controls the shut-off valve (23) of the heat pipe cooling component to close, the vents (61) and the ventilator (62) of the ventilation component to close, the circulation pump (31) of the heat dissipation mechanism in the heat preservation and heat dissipation component to close, and the auxiliary heating system (14) to open, and returns to step 2; Step 11: The central controller (44) judges whether the internal temperature Tn of the box body is not within the internal temperature range of the device box body (11). If so, step 10 is executed; if not, step 17 is executed; Step 10: The central controller (44) determines whether the internal temperature Tn of the box body is less than the minimum value of the internal temperature range. If so, step 7 is executed; if not, step 11 is executed; Step 11: The central controller (44) controls the opening of the shut-off valve (23) of the heat pipe cooling component, closes the ventilation opening (61) and the ventilator (62) of the ventilation component, closes the circulation pump (31) of the heat dissipation mechanism in the heat preservation and heat dissipation component, closes the auxiliary heating system (14), and returns to step 2; Step 12: The central controller (44) determines whether the average value Te is greater than or equal to the highest temperature threshold. If so, step 13 is executed; if not, step 11 is executed; Step 13: The central controller (44) sequentially determines whether the internal temperature Te' of the battery collected by all the first sensors is greater than the extreme temperature threshold. If any internal temperature Te of the battery is greater than the extreme temperature threshold, the central controller (44) controls the fire extinguishing device (42) to start and ends the cold and heat automatic control process; otherwise, step 14 is executed; Step 14: The central controller (44) controls the opening of the shut-off valve (23) of the heat pipe cooling component, opens the ventilation opening (61) and the ventilator (62) of the ventilation component, opens the circulation pump (31) of the heat dissipation mechanism in the heat preservation and heat dissipation component, closes the auxiliary heating system (14), and returns to step 2; Step 15: The central controller (44) determines whether the average value Te exceeds the discharge temperature range. If so, step 16 is executed; if not, step 9 is executed; Step 16: The central controller (44) determines whether the average value Te is less than or equal to the minimum value of the discharge temperature range. If so, step 6 is executed; if not, step 13 is executed; Step 17: The central controller (44) cycles the cold and heat automatic control process every interval period T; Step 18: Determine whether the cold and heat automatic control device is actively closed. If so, end the cold and heat automatic control process; if not, return to step 2.

3. The cold and heat self-control method according to claim 2, characterized in that: The charging temperature range of the battery pack (41) is 23°C to 27°C, the discharge temperature range is 15°C to 35°C, the lowest temperature threshold is 10°C, the highest temperature threshold is 35°C, and the extreme temperature threshold is 65°C. The internal temperature range of the device box body (11) is 10°C to 40°C.

4. The cold and heat self-control method according to claim 2, characterized in that: The working state A of the battery pack (41) includes a charging state and a discharging state. When in the charging state, A = 1; when in the discharging state, A = 0.

5. The cold and heat automatic control method according to claim 2, characterized in that: In the above step 18, the condition for actively closing the cold and heat automatic control device is manual closing.

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