Vehicle-mounted laser weapon thermal management system and working method

Abstract

The present application belongs to the technical field of vehicle-mounted laser weapon thermal management, and particularly relates to a vehicle-mounted laser weapon thermal management system and a working method. The system comprises a low-temperature heat dissipation circulation unit, a weapon heat dissipation circulation unit and a vapor compression refrigeration circulation unit. The system uses a phase change heat storage material as an intermediate heat storage device, uses a power battery as a partial power source, uses an evaporator to circulate heat dissipation for the low-temperature heat dissipation circulation unit, and realizes efficient heat dissipation management of the laser weapon and the power supply in a small space of a vehicle through a combined thermal control scheme of the phase change heat storage device and the evaporator, which helps to promote the application of the laser weapon in the vehicle field.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle-mounted laser weapon thermal management, and particularly relates to a vehicle-mounted laser weapon thermal management system and a working method. BACKGROUND

[0002] Laser weapons play an important role in war. According to the different platforms, the laser weapons can be divided into airborne, shipborne and vehicle-mounted laser weapons. The research on vehicle-mounted laser weapons has always been an important field that cannot be ignored. The electro-optical energy conversion efficiency of laser weapons is less than 35%, and a few tens of kilowatts of laser beams are generated, which requires a large energy supply device and a high-power heat dissipation system.

[0003] Some existing patents have proposed cooling systems for high-energy weapons such as lasers. For example, patent application CN201510072716.7 proposes an air expansion refrigeration-based cooling system for airborne heat-generating elements. However, the cooling system is designed for airborne laser weapons and uses ram air as a cold source. Patent application CN201810855063.3 proposes an airborne spray cooling system that uses ram air and evaporation refrigeration cycle to cool circulating water. The cooling system also uses ram air as a cold source and uses phase change materials for cold storage. However, the cold storage device has two sets of pipelines for the hot side and the cold side, making the cold storage device larger and limiting the increase in heat exchange area, which is not suitable for vehicle-mounted applications. Patent application CN112822928A proposes a multi-nozzle spray cooling system and method for airborne weapons using a multi-cold-source composite phase change material heat exchanger and an ejector. The cooling system uses ram air as a cold source, a vortex refrigeration tank as an auxiliary cold source, and airborne fuel as an emergency cold source. Three groups of phase change materials are used as intermediate energy storage media for the three types of cold sources. However, the system is too large and is not suitable for vehicle-mounted applications.

[0004] Compared with airborne laser weapons, vehicle-mounted laser weapons have developed more slowly due to limitations in volume, power supply, heat dissipation, and other conditions. Due to the low speed of vehicles, it is difficult to use ram air as a cooling medium. The instantaneous heat dissipation power of laser weapons is as high as several tens of kilowatts, and the suitable working temperature is about 25℃. When the environmental temperature is high (e.g., 40-45℃), there is a huge heat dissipation problem. In addition, the weapon system uses a generator and a power battery to supply power, and the thermal management of the power battery also needs to be considered. SUMMARY

[0005] According to the characteristics of limited space, high working environment temperature, and lack of cold sources for vehicle-mounted laser weapons, the application proposes a thermal management system and working method for vehicle-mounted laser weapons. The system uses phase change heat storage materials as intermediate heat storage devices, uses power batteries as part of the power source, and uses vapor compression refrigeration and environmental heat exchange for system heat dissipation, which helps to promote the application of laser weapons in the vehicle field.

[0006] The application is realized by the technical scheme as follows:

[0007] A vehicle-mounted laser weapon thermal management system comprises a low-temperature heat dissipation circulation unit and a weapon heat dissipation circulation unit.

[0008] The low-temperature heat dissipation circulation unit is a closed liquid loop formed by sequentially connecting a cooling liquid passage in a controller, a cooling liquid passage in a wheel hub motor, a water pump B and a radiator through pipelines; a three-way valve C is arranged on the pipeline between the water pump B and the radiator, and a three-way valve D is arranged on the pipeline between the radiator and the controller.

[0009] The weapon heat dissipation circulation unit is a closed liquid loop formed by sequentially connecting a micro-channel radiator, a cooling liquid passage in a power battery, a phase change heat accumulator, an internal cooling liquid passage in an evaporator and a water pump A through pipelines; the internal cooling liquid passage in the evaporator is further connected to a water tank through a pipeline; a three-way valve A is arranged on the pipeline between the micro-channel radiator and the power battery; a three-way valve B and a four-way valve A are arranged on the pipeline between the phase change heat accumulator and the evaporator in sequence; and a four-way valve B is arranged on the pipeline between the evaporator and the micro-channel radiator.

[0010] The radiator and the internal cooling liquid in the evaporator are both in heat exchange with external air.

[0011] The third port of the three-way valve C is connected to the third port of the four-way valve A; the third port of the three-way valve A is connected to the fourth port of the four-way valve A; the third port of the three-way valve B is connected to the third port of the four-way valve B; and the third port of the three-way valve D is connected to the fourth port of the four-way valve B.

[0012] Further, the vehicle-mounted laser weapon thermal management system further comprises a vapor compression refrigeration cycle unit; the internal evaporator is further provided with a refrigerant passage, and the internal cooling liquid in the evaporator is in heat exchange with refrigerant in the refrigerant passage instead of external air.

[0013] The vapor compression refrigeration cycle unit is a closed loop formed by sequentially connecting the internal refrigerant passage in the evaporator, a compressor and an air-cooled condenser through pipelines, and an expansion valve is installed on the pipeline between the air-cooled condenser and the internal refrigerant passage in the evaporator.

[0014] The vapor compression refrigeration unit is in heat exchange with the cooling liquid in the internal cooling liquid passage in the evaporator instead of external air; an air induction fan is integratedly installed outside the radiator, and the air-cooled condenser is placed at an upstream air outlet of the radiator; under the action of the air induction fan, external natural air first passes through the air-cooled condenser and then passes through the radiator, so that gas flow heat dissipation is realized.

[0015] Further, flow regulation bypass valves are arranged in parallel at both ends of the internal cooling liquid passage in the power battery.

[0016] Further, the phase change heat accumulator is provided with an inlet and an outlet, and is internally provided with a heat exchange coil and a plurality of fins, and the cooling liquid flows in the heat exchange coil; the fins pass through the heat exchange coil and are placed perpendicularly to the heat exchange coil; the cooling liquid flows in from the inlet and out from the outlet in a forward direction, and flows in from the outlet and out from the inlet in a reverse direction; the gaps between the fins, between the fins and the heat exchange coil, and between the fins, the heat exchange coil and the inner wall of the phase change heat accumulator are filled with phase change heat storage materials.

[0017] Further, the phase change heat storage material is a substance or mixture of paraffin family; the cooling liquid is a water solution added with anti-freezing liquid; and the refrigerant in the refrigerant channel is R22, R134 or R134a.

[0018] A working method of the vehicle-mounted laser weapon thermal management system of the application, and the method steps are as follows:

[0019] When the laser weapon is in a silent phase, the low-temperature heat dissipation circulation unit operates; at this time, the four-way valve A, the three-way valve C, the three-way valve D and the four-way valve B are in an open state; the flow regulating bypass valve, the three-way valve A, the expansion valve and the three-way valve B are in a closed state; the cooling liquid in the water tank flows into two branches under the action of the water pump A and the water pump B, the cooling liquid of the first branch flows out from the four-way valve A, is cooled in the cooling liquid channel of the evaporator, and then flows through the water pump A, the four-way valve B and reaches the three-way valve D; the cooling liquid of the second branch flows through the radiator, is cooled, is combined with the cooling liquid of the first branch at the three-way valve D, and then flows through the cooling controller and the cooling liquid channel in the hub motor in sequence to perform circulation heat dissipation on the vehicle chassis.

[0020] When the laser weapon is in a firing phase, the low-temperature heat dissipation circulation unit and the weapon heat dissipation circulation unit operate independently: at this time, the three-way valve A, the three-way valve B, the four-way valve A, the three-way valve C, the three-way valve D and the four-way valve B are in an open state; the flow regulating bypass valve and the expansion valve are in a closed state; under the action of the water pump A, the cooling liquid in the water tank flows from one end of the cooling liquid channel of the evaporator, and then flows through the water pump A, the four-way valve B, the micro-channel radiator externally integrated with the laser weapon, the three-way valve A, the cooling liquid channel in the power battery, the inlet of the phase change heat accumulator, the outlet of the phase change heat accumulator, the three-way valve B and the four-way valve A, and returns to the other end of the cooling liquid channel of the evaporator 8; at this time, the cooling liquid flows in the phase change heat accumulator in a forward direction; in the low-temperature heat dissipation circulation unit, the cooling liquid in the water tank flows through the three-way valve C, the radiator, the cooling liquid channel in the controller and the cooling liquid channel in the hub motor under the action of the water pump A and the water pump B to perform circulation heat dissipation on the vehicle chassis.

[0021] When the laser weapon is in the charging phase, the low-temperature heat dissipation circulation unit operates: at this time, three-way valve A, three-way valve B, four-way valve A, three-way valve C, three-way valve D, and four-way valve B are in the open state; flow regulating bypass valve 3 and expansion valve 15 are in the closed state; water pump A and water pump B are opened, and the cooling liquid in the water tank flows from one end of the evaporator cooling liquid channel to the other end of the evaporator cooling liquid channel through water pump A, four-way valve B, three-way valve B, the liquid outlet of the phase change heat accumulator, the liquid inlet of the phase change heat accumulator, the cooling liquid channel arranged inside the power battery, three-way valve A, and four-way valve A in sequence, to perform circulating heat dissipation on the power battery in the charging state; at this time, the cooling liquid flows in the phase change heat accumulator in a reverse direction; the cooling liquid flows from one end of the evaporator cooling liquid channel to the other end of the evaporator cooling liquid channel through the first water pump, the second four-way valve, the second three-way valve, the liquid outlet of the phase change heat accumulator, the liquid inlet of the phase change heat accumulator, the cooling liquid channel inside the power battery, the first three-way valve, and the first four-way valve in sequence, to perform circulating heat dissipation; at this time, the cooling liquid flows in the phase change heat accumulator in a reverse direction; in the low-temperature heat dissipation circulation unit, the cooling liquid in the water tank flows through three-way valve C, the radiator, the cooling liquid channel inside the controller, and the cooling liquid channel inside the hub motor to perform circulating heat dissipation on the vehicle chassis under the action of water pump A and water pump B.

[0022] Further, in the silent phase, the launch phase, and the charging phase of the laser weapon, the vapor compression refrigeration circulation unit can be connected at the same time to assist the low-temperature heat dissipation circulation unit in dissipating heat from the vehicle chassis.

[0023] In the vapor compression refrigeration circulation unit, the refrigerant in the refrigerant channel inside the evaporator flows through the compressor, the air-cooled condenser, and the expansion valve back to the refrigerant channel of the evaporator to cool the cooling liquid in the evaporator cooling liquid channel.

[0024] Advantages

[0025] (1) The present application provides a vehicle-mounted laser weapon thermal management system, which comprises a low-temperature heat dissipation circulation unit, a weapon heat dissipation circulation unit, and a vapor compression refrigeration circulation unit; the system uses phase change heat storage material as an intermediate heat storage device and uses a power battery as a partial power source, uses an evaporator for low-temperature heat dissipation circulation, and realizes efficient heat dissipation management of the laser weapon and the power supply in a small space on the vehicle through a combined thermal control scheme of the phase change heat accumulator and the evaporator, which helps to promote the application of laser weapons in the field of vehicles.

[0026] (2) The present application provides a vehicle-mounted laser weapon thermal management system, which further comprises a vapor compression refrigeration unit; the vapor compression refrigeration uses environmental air cooling, exchanges heat with the external environment of the evaporator, and assists the system in heat dissipation circulation; the phase change heat accumulator device has only one set of pipeline and can realize forward and reverse operation.

[0027] (3) The application provides a vehicle-mounted laser weapon thermal management system, wherein a flow bypass valve is arranged in parallel at both ends of a power battery; when the temperature of the power battery is low, the flow regulating bypass valve is opened to regulate the flow of the cooling liquid through the cooling liquid channel in the power battery, so that the temperature of the power battery is maintained at a set temperature.

[0028] (4) The application provides a working method of a vehicle-mounted laser weapon thermal management system, wherein the thermal management system proposes working modes in different stages (silent, emission and charging) when the laser weapon works intermittently according to the energy grade difference; in the silent stage, a low-temperature heat dissipation circulating unit runs to assist the low-temperature heat dissipation of the automobile chassis; in the emission stage, the weapon heat dissipation circulating unit and the low-temperature heat dissipation circulating unit independently run respectively, and jointly work to efficiently dissipate heat for the automobile chassis and the laser weapon; in the charging stage, the cooling liquid flows reversely in the phase change heat accumulator, the phase change heat storage material in the phase change heat accumulator absorbs heat to perform thermal management, and the low-temperature heat dissipation circulating unit runs to assist the low-temperature heat dissipation of the automobile chassis; in addition, the vapor compression refrigeration unit can be connected simultaneously in the above three stages to jointly work, exchanges heat with the external environment of the evaporator, cools the cooling liquid, thereby cools and dissipates heat for the system, and realizes efficient and energy-saving thermal management. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Fig. 1 is a schematic diagram of the vehicle-mounted laser weapon thermal management system according to the application;

[0030] Figure 2 Fig. 2 is a schematic diagram of the working state of the laser weapon;

[0031] Figure 3 Fig. 3 is a working mode of the vehicle-mounted laser weapon thermal management system according to the application when the laser weapon is silent;

[0032] Figure 4 Fig. 4 is a working mode of the vehicle-mounted laser weapon thermal management system according to the application when the laser weapon is emitted;

[0033] Figure 5 Fig. 5 is a working mode of the vehicle-mounted laser weapon thermal management system according to the application when the laser weapon is charged;

[0034] Figure 6 Fig. 6 is a schematic diagram of the structure of the phase change heat accumulator;

[0035] Wherein, 1-laser weapon, 2-micro-channel radiator, 3-flow regulating bypass valve, 4-three-way valve A, 5-power battery, 6-phase change heat accumulator, 7-three-way valve B, 8-evaporator, 9-four-way valve A, 10-compressor, 11-air-cooled condenser, 12-three-way valve C, 13-radiator, 14-inducing fan, 15-expansion valve, 16-water pump A, 17-three-way valve D, 18-four-way valve B, 19-controller, 20-wheel hub motor, 21-water pump B, 22-water tank, 6.1-liquid inlet, 6.2-liquid outlet, 6.3-heat exchange coil, solid arrow is the cooling liquid flow direction, dotted arrow is the refrigerant flow direction. DETAILED DESCRIPTION

[0036] The application will be described in detail below with reference to the drawings and examples.

[0037] Example 1

[0038] This example provides a vehicle-mounted laser weapon thermal management system, as shown in Figure 1 including a low-temperature heat dissipation circulation unit, a weapon heat dissipation circulation unit and a vapor compression refrigeration circulation unit;

[0039] The low-temperature heat dissipation circulation unit includes a controller 19, a wheel hub motor 20, a water pump B 21 and a radiator 13; wherein the controller 19 and the wheel hub motor 20 are both internally provided with a cooling liquid passage; the radiator 13 is externally integrated with an inducing fan 14;

[0040] The low-temperature heat dissipation circulation unit is a closed liquid loop formed by the cooling liquid passage in the controller 19, the cooling liquid passage in the wheel hub motor 20, the water pump B 21 and the radiator 13 connected in sequence through pipelines; a three-way valve C 12 is installed on the pipeline between the water pump B 21 and the radiator 13, (the first port of the three-way valve C 12 is connected with the water pump B 21, and the second port of the three-way valve C 12 is connected with one end of the radiator 13), and a three-way valve D 17 is installed on the pipeline between the radiator 13 and the cooling liquid passage in the controller 19 (the first port of the three-way valve D 17 is connected with the other end of the radiator 13, and the second port of the three-way valve D 17 is connected with the cooling liquid passage in the controller 19);

[0041] The weapon heat dissipation circulation unit includes a laser weapon 1, a micro-channel radiator 2, a power battery 5, a phase change heat accumulator 6, a cooling liquid passage in an evaporator 8 and a water pump A 16; wherein the laser weapon 1 is integrated and installed outside the micro-channel radiator 2; the power battery 5 is internally provided with a cooling liquid passage; the evaporator 8 is internally provided with independent cooling liquid passages and refrigerant passages; the structure of the phase change heat accumulator 6 is as shown in Figure 6As shown, the phase change heat accumulator 6 is provided with an inlet 6.1 and an outlet 6.2, and the phase change heat accumulator 6 is internally provided with a heat exchange coil 6.3 and a plurality of fins (not shown in the figure), and the cooling liquid flows inside the heat exchange coil 6.3; the heat exchange coil 6.3 penetrates through the fins, and the fins are placed perpendicular to the heat exchange coil, so as to increase the heat exchange area; the cooling liquid flows in from the inlet 6.1 and flows out from the outlet 6.2 in a forward direction, and the cooling liquid flows in from the outlet 6.2 and flows out from the inlet 6.1 in a reverse direction; the gaps between the fins, between the fins and the heat exchange coil 6.3, and between the fins, the heat exchange coil 6.3 and the inner wall of the phase change heat accumulator 6 are filled with phase change heat storage materials;

[0042] The weapon heat dissipation circulation unit is a closed liquid loop formed by sequentially connecting the micro-channel radiator 2, the cooling liquid channel in the power battery 5, the phase change heat accumulator 6, the cooling liquid channel in the evaporator 8 and the water pump A 16 through pipelines; a three-way valve A 4 is installed on the pipeline between the micro-channel radiator 2 and the power battery 5, (the first port of the three-way valve A 4 is connected with one end of the micro-channel radiator 2, and the second port of the three-way valve A 4 is connected with the cooling liquid channel inside the power battery 5); a three-way valve B 7 and a four-way valve A 9 are sequentially installed on the pipeline between the phase change heat accumulator 6 and the cooling liquid channel in the evaporator 8, (the first port of the three-way valve B 7 is connected with the outlet of the phase change heat accumulator 6, the second port of the three-way valve B 7 is connected with the first port of the four-way valve A 9, and the second port of the four-way valve A 9 is connected with one end of the cooling liquid channel inside the evaporator 8); a four-way valve B 18 is installed on the pipeline between the cooling liquid channel inside the evaporator 8 and the micro-channel radiator 2, (the first port of the four-way valve B 18 is connected with the water pump A 16, and the second port of the four-way valve B 18 is connected with the other end of the micro-channel radiator 2); the cooling liquid channel inside the evaporator 8 is further connected with the water tank 22 through a pipeline; the power battery 5 is provided with a flow regulating bypass valve 3 in parallel at both ends;

[0043] The vapor compression refrigeration circulation unit includes a compressor 10, an air-cooled condenser 11 and a refrigerant channel inside the evaporator 8; an expansion valve 15 is installed on the pipeline between the air-cooled condenser 11 and the refrigerant channel inside the evaporator 8; the vapor compression refrigeration circulation unit is a closed loop formed by sequentially connecting the refrigerant channel inside the evaporator 8, the compressor 10 and the air-cooled condenser 11 through pipelines;

[0044] The third port of the three-way valve A 4 is connected with the fourth port of the four-way valve A 9; the third port of the three-way valve B 7 is connected with the third port of the four-way valve B 18; the third port of the three-way valve C 12 is connected with the third port of the four-way valve A 9; and the third port of the three-way valve D 17 is connected with the fourth port of the four-way valve B 18;

[0045] When the vapor compression refrigeration cycle unit is not started, the cooling liquid in the cooling liquid passage in the evaporator 8 and the radiator 13 are in heat exchange with the outside air; when the vapor compression refrigeration cycle unit is started, the vapor compression refrigeration cycle unit is in heat exchange with the cooling liquid in the cooling liquid passage in the evaporator 8 instead of the outside air, and the cooling liquid is cooled; the air-cooled condenser 11 is placed at the air inlet upstream of the radiator 13, and under the action of the air induction fan 14, the outside natural wind first passes through the air-cooled condenser 11 and then passes through the radiator 13, so that the gas flow heat dissipation is realized, and the refrigerant in the air-cooled condenser 11 is cooled; the cooling liquid is a water solution added with an anti-freezing liquid, such as a glycol water solution; the refrigerant in the refrigerant passage is R22, R134 or R134a.

[0046] As shown in Figure 2 The laser weapon 1 works in three stages: in the time period of 0-t0, it is in a silent stage, and in the silent stage, the laser weapon is idle; in the time period of t0-t1, it is in a launching stage, and in the launching stage, the laser weapon launches laser; in the time period of t1-t2, it is in a charging stage, and in the charging stage, the power battery 5 charges and dissipates heat; the launching stage and the charging stage constitute a launching cycle, and after the charging stage ends, the next launching cycle is entered.

[0047] Embodiment 2

[0048] This embodiment provides a working method of the vehicle-mounted laser weapon thermal management system in the silent stage, as shown in Figure 3 When the laser weapon 1 is silent, the low-temperature heat dissipation circulation unit operates to dissipate heat from the vehicle chassis;

[0049] At this time, the four-way valve A 9, the three-way valve C 12, the three-way valve D 17 and the four-way valve B 18 are in an open state; the flow regulating bypass valve 3, the three-way valve A 4, the expansion valve 15 and the three-way valve B 7 are in a closed state;

[0050] The cooling liquid in the water tank 22 is divided into two branches under the action of the water pump A and the water pump B through the three-way valve C 12, the first branch of the cooling liquid flows out from the four-way valve A 9, is cooled through the cooling liquid passage of the evaporator 8, and then flows through the water pump A 16, the four-way valve B 18 and the three-way valve D 17 in sequence; the second branch of the cooling liquid flows through the radiator 13 to be cooled, is combined with the first branch of the cooling liquid at the three-way valve D 17, and then flows through the internal cooling liquid passage of the cooling controller 19 and the internal cooling liquid passage of the in-wheel motor 20 in sequence to circulate and dissipate heat from the vehicle chassis;

[0051] In the silence phase, the vapor compression refrigeration cycle unit can also be connected to assist the low-temperature heat dissipation cycle unit to dissipate heat from the vehicle chassis; the expansion valve 15 is opened, and in the vapor compression refrigeration cycle unit, the refrigerant in the refrigerant passage in the evaporator 8 passes through the compressor 10, the air-cooled condenser 11, the expansion valve 15, and returns to the refrigerant passage in the evaporator 8 to cool the coolant in the coolant passage in the evaporator 8.

[0052] Embodiment 3

[0053] This embodiment provides a working method of the vehicle-mounted laser weapon thermal management system in the launch phase, as described in Embodiment 1, which comprises the following steps: Figure 4 As shown in the figure, when the laser weapon 1 is launched, the low-temperature heat dissipation cycle unit and the weapon heat dissipation cycle unit operate independently to dissipate heat.

[0054] At this time, the three-way valve A 4, the three-way valve B 7, the four-way valve A 9, the three-way valve C 12, the three-way valve D 17, and the four-way valve B 18 are in the open state; the flow regulating bypass valve 3 and the expansion valve 15 are in the closed state.

[0055] Under the action of the water pump A 16, the coolant in the water tank 22 flows from one end of the coolant passage in the evaporator 8 to the other end of the coolant passage in the evaporator 8 in sequence through the water pump A 16, the four-way valve B 18, the micro-channel heat sink 2 externally integrated with the laser weapon 1, the three-way valve A 4, the coolant passage in the power battery 5, the inlet 6.1 of the phase change heat accumulator 6, the heat exchange coil 6.3, the outlet 6.2 of the phase change heat accumulator 6, the three-way valve B 7, the four-way valve A 9; at this time, the coolant flows forward in the refrigeration coil 6.3 in the phase change heat accumulator 6.

[0056] The power battery 5 provides part of the electric energy for the laser weapon 1, and the temperature of the power battery 5 is limited to 10-40℃; when the temperature of the power battery 5 is relatively low, the flow regulating bypass valve 3 is opened to regulate the flow of the coolant flowing through the coolant passage in the power battery 5 to control the temperature of the power battery 5 to be maintained at 10-40℃.

[0057] In the low-temperature heat dissipation cycle unit, the coolant in the water tank 22 circulates and dissipates heat from the vehicle chassis through the three-way valve C 12, the heat sink 13, the coolant passage in the controller 19, and the coolant passage in the hub motor 20 under the action of the water pump A 16 and the water pump B 21.

[0058] In the launch phase, the vapor compression refrigeration cycle unit can also be connected to assist in heat dissipation; in the vapor compression refrigeration cycle unit, the expansion valve 15 is opened, and the refrigerant in the refrigerant passage in the evaporator 8 passes through the compressor 10, the air-cooled condenser 11, the expansion valve 15, and returns to the refrigerant passage in the evaporator 8 to cool the coolant in the coolant passage in the evaporator 8.

[0059] In this embodiment, the temperature of the cooling liquid when flowing out of one end of the evaporator 8 is 5-10°C, and the temperature rises to 15-20°C when flowing out of the micro-channel radiator 2; the temperature of the cooling liquid flowing through the power battery 5 rises to 30-35°C; the phase change heat storage material in the phase change heat storage device 6 is a paraffin substance or mixture, and the phase change temperature is 14-16°C; after the cooling liquid flows through the phase change heat storage material, the temperature of the cooling liquid decreases to 17-20°C, and after returning to the other end of the cooling liquid channel of the evaporator 8, the temperature of the cooling liquid decreases to 5-10°C under the action of the vapor compression refrigeration cycle unit.

[0060] Embodiment 4

[0061] This embodiment provides a working method of the vehicle-mounted laser weapon thermal management system described in Embodiment 1 in the charging phase, as shown in the figure, when the laser weapon 1 is charging, the power battery 5 needs to be cooled, and the phase change heat storage material inside the phase change heat storage device 6 also needs to release heat; the low-temperature cooling circulation unit operates to cool the vehicle chassis and the charging laser weapon; Figure 5

[0062] At this time, the three-way valve A 4, the three-way valve B 7, the four-way valve A 9, the three-way valve C 12, the three-way valve D 17, and the four-way valve B 18 are in an open state; the flow regulating bypass valve 3 and the expansion valve 15 are in a closed state;

[0063] The water pump A 16 and the water pump B 21 are opened, and the cooling liquid in the water tank 22 flows from one end of the cooling liquid channel of the evaporator 8 to the water pump A 16, the four-way valve B 18, the three-way valve B 7, the outlet 6.2 of the phase change heat storage device 6, the heat exchange coil 6.3 and the inlet 6.1, the cooling liquid channel arranged inside the power battery 5, the three-way valve A 4, the four-way valve A 9, and the other end of the cooling liquid channel of the evaporator 8 in sequence to circulate and cool the power battery 5 in the charging state; at this time, the cooling liquid flows in the phase change heat storage device 6 in a reverse direction;

[0064] In the low-temperature cooling circulation unit, the cooling liquid in the water tank 22 flows through the three-way valve C 12, the radiator 13, the cooling liquid channel inside the controller 19, and the cooling liquid channel inside the hub motor 20 to circulate and cool the vehicle chassis under the action of the water pump A 16 and the water pump B 21;

[0065] In the charging phase, the vapor compression refrigeration cycle unit can also be connected at the same time to assist in cooling; the expansion valve 15 is opened, and in the vapor compression refrigeration cycle unit, the refrigerant in the refrigerant channel inside the evaporator 8 flows through the compressor 10, the air-cooled condenser 11, the expansion valve 15, and the refrigerant channel of the evaporator 8 to cool the cooling liquid in the cooling liquid channel of the evaporator 8;

[0066] ​In this embodiment, the temperature of the cooling liquid flowing out from one end of the cooling liquid passage of the evaporator 8 is 5-10°C, is first increased to 13-14°C by absorbing heat of the phase change heat storage material in the phase change heat storage device 6, and then is increased to 25-30°C by absorbing heat of the power battery 5; after returning to the other end of the cooling liquid passage of the evaporator 8, the temperature of the cooling liquid is decreased to 5-10°C under the action of the vapor compression refrigeration cycle unit.

[0067] To sum up, the above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicular laser weapon thermal management system, characterized by: The low-temperature heat dissipation circulation unit and the weapon heat dissipation circulation unit are connected in sequence by pipelines to form a closed liquid circuit; The low-temperature heat dissipation circulation unit is a closed liquid circuit formed by connecting a cooling liquid passage in the controller, a cooling liquid passage in the wheel hub motor, water pump B and a radiator in sequence by pipelines; a three-way valve C is arranged on the pipeline between water pump B and the radiator, and a three-way valve D is arranged on the pipeline between the radiator and the controller; The weapon heat dissipation circulation unit is a closed liquid circuit formed by connecting a micro-channel radiator, a cooling liquid passage in the power battery, a phase change heat accumulator, an internal cooling liquid passage of an evaporator and water pump A in sequence by pipelines; the internal cooling liquid passage of the evaporator is further connected to a water tank by a pipeline; a three-way valve A is arranged on the pipeline between the micro-channel radiator and the power battery; a three-way valve B and a four-way valve A are arranged in sequence on the pipeline between the phase change heat accumulator and the evaporator; and a four-way valve B is arranged on the pipeline between the evaporator and the micro-channel radiator; The radiator and the internal cooling liquid passage of the evaporator are both in heat exchange with external air; The third port of the three-way valve C is connected to the third port of the four-way valve A; the third port of the three-way valve A is connected to the fourth port of the four-way valve A; the third port of the three-way valve B is connected to the third port of the four-way valve B; and the third port of the three-way valve D is connected to the fourth port of the four-way valve B; The phase change heat accumulator is provided with an inlet and an outlet, and is internally provided with a heat exchange coil and a plurality of fins; the cooling liquid flows in the heat exchange coil; the fins pass through the heat exchange coil and are arranged perpendicularly to the heat exchange coil; the cooling liquid flows in the positive direction from the inlet to the outlet, and flows in the reverse direction from the outlet to the inlet; and the space between the fins, between the fins and the heat exchange coil and between the fins, the heat exchange coil and the inner wall of the phase change heat accumulator is filled with a phase change heat storage material; The working process of the vehicle-mounted laser weapon thermal management system comprises: When the laser weapon is in a silent phase, the low-temperature heat dissipation circulation unit is operated; at this time, the four-way valve A, the three-way valve C, the three-way valve D and the four-way valve B are in an open state; the flow regulating bypass valve, the three-way valve A, the expansion valve and the three-way valve B are in a closed state; the cooling liquid in the water tank is divided into two branches by the three-way valve C under the action of water pump A and water pump B; the cooling liquid in the first branch flows out from the four-way valve A, is cooled by the cooling liquid passage of the evaporator, then flows through water pump A and the four-way valve B to the three-way valve D; the cooling liquid in the second branch flows through the radiator to be cooled, is combined with the cooling liquid in the first branch at the three-way valve D, and then flows through the cooling controller and the internal cooling liquid passage of the wheel hub motor in sequence to circulate and dissipate heat for the vehicle chassis; When the laser weapon is in the launch phase, the low-temperature heat dissipation circulation unit and the weapon heat dissipation circulation unit operate independently: at this time, three-way valve A, three-way valve B, four-way valve A, three-way valve C, three-way valve D, and four-way valve B are in the open state; the flow regulating bypass valve and the expansion valve are in the closed state; under the action of water pump A, the cooling liquid in the water tank passes through water pump A, four-way valve B, the micro-channel heat sink integrated with the laser weapon outside, three-way valve A, the cooling liquid channel inside the power battery, the inlet of the phase change heat accumulator, the outlet of the phase change heat accumulator, three-way valve B, and four-way valve A in turn from one end of the evaporator cooling liquid channel to the other end; at this time, the cooling liquid flows forward in the refrigeration coil inside the phase change heat accumulator; in the low-temperature heat dissipation circulation unit, the cooling liquid in the water tank circulates and dissipates heat to the vehicle chassis through three-way valve C, the radiator, the cooling liquid channel inside the controller, and the cooling liquid channel inside the hub motor under the action of water pump A and water pump B. When the laser weapon is in the charging phase, the low-temperature heat dissipation circulation unit operates: at this time, three-way valve A, three-way valve B, four-way valve A, three-way valve C, three-way valve D, and four-way valve B are in the open state; the flow regulating bypass valve and the expansion valve are in the closed state; water pump A and water pump B are turned on, and the cooling liquid in the water tank passes through water pump A, four-way valve B, three-way valve B, the outlet of the phase change heat accumulator, the inlet of the phase change heat accumulator, the cooling liquid channel inside the power battery, three-way valve A, and four-way valve A in turn from one end of the evaporator cooling liquid channel to the other end to circulate and dissipate heat to the power battery in the charging state; at this time, the cooling liquid flows reversely in the phase change heat accumulator; the cooling liquid passes through the first water pump, the second four-way valve, the second three-way valve, the outlet of the phase change heat accumulator, the inlet of the phase change heat accumulator, the cooling liquid channel inside the power battery, the first three-way valve, and the first four-way valve in turn from one end of the evaporator cooling liquid channel to the other end to circulate and dissipate heat; at this time, the cooling liquid flows reversely in the phase change heat accumulator; in the low-temperature heat dissipation circulation unit, the cooling liquid in the water tank circulates and dissipates heat to the vehicle chassis through three-way valve C, the radiator, the cooling liquid channel inside the controller, and the cooling liquid channel inside the hub motor under the action of water pump A and water pump B.

2. The thermal management system for a laser weapon on a vehicle of claim 1, wherein: It also includes a vapor compression refrigeration circulation unit; the evaporator is also provided with a refrigerant channel, and the evaporator internal cooling liquid replaces the external air to exchange heat with the refrigerant in the refrigerant channel; The vapor compression refrigeration circulation unit is a closed loop composed of the evaporator internal refrigerant channel, the compressor, and the air-cooled condenser connected in sequence by pipelines, and an expansion valve is installed on the pipeline between the air-cooled condenser and the evaporator internal refrigerant channel; The vapor compression refrigeration unit replaces the external air to exchange heat with the cooling liquid in the evaporator internal cooling liquid channel; the radiator is integrated with a draft fan outside, and the air-cooled condenser is placed at the upstream air outlet of the radiator; under the action of the draft fan, the external natural wind first passes through the air-cooled condenser and then passes through the radiator to realize gas flow heat dissipation.

3. The thermal management system for a laser weapon on a vehicle of claim 1 or 2, wherein: The two ends of the cooling liquid channel in the power battery are connected in parallel with flow regulating bypass valves.

4. The thermal management system for a laser weapon on a vehicle of claim 1, wherein: The phase change heat storage material is a substance or mixture of paraffin family; the cooling liquid is a water solution with antifreezing liquid added; and the refrigerant in the refrigerant channel is R22, R134 or R134a.

5. The thermal management system for a laser weapon on a vehicle of claim 1, wherein: During the silence stage, the launching stage and the charging stage of the laser weapon, the vapor compression refrigeration cycle unit can be connected simultaneously to assist the low-temperature heat dissipation cycle unit to dissipate heat for the vehicle chassis. In the vapor compression refrigeration cycle unit, the refrigerant in the internal refrigerant channel of the evaporator returns to the refrigerant channel of the evaporator through the compressor, the air-cooled condenser and the expansion valve to cool the cooling liquid in the cooling liquid channel of the evaporator.

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