Laser-carried vehicle thermal management system and management method thereof

Abstract

The invention relates to the technical field of laser thermal management, in particular to a laser-carried vehicle thermal management system and a management method thereof, which can realize laser thermal management under the conditions of low power consumption and small size. Fuel oil and a phase change material are used as cold storage media, and the size of the laser cooling system can be reduced. The cooling system can operate in a short-time low-power laser emission mode and a long-time high-power laser emission mode, energy consumption is reduced, and compared with a traditional cooling system, the cooling system is more compact, lighter and more suitable for being applied to ground vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of laser thermal management, and in particular to a thermal management system for a vehicle equipped with a laser and a management method thereof. Background Art

[0002] Lasers have important application prospects due to their high precision and low cost. Laser operation usually generates a lot of heat, which needs to be effectively managed to ensure the stability and performance of the laser.

[0003] Traditional laser systems usually rely on large water cooling units to reduce the temperature of the laser. This cooling system uses large-capacity cold and hot water tanks to store cold and heat, and uses a mixture of cold and hot water to adjust the coolant temperature, which takes up a lot of space, increases the size and weight of the laser system, and limits its application on mobile platforms.

[0004] In summary, the current laser cooling system has the problem of being too large and the organic integration of the laser cooling system with the original chassis heat pipe system. Summary of the invention

[0005] In view of this, the present invention provides a vehicle thermal management system equipped with a laser and a management method thereof, which can achieve laser thermal management with low power consumption and small volume.

[0006] To achieve the above-mentioned purpose, the present invention provides a vehicle thermal management system equipped with a laser, comprising an engine, a water pump 1, a heat dissipation unit, a water pump 2, a generator controller, a generator, a hub motor controller, a hub motor, a fuel tank 1, a condenser, an expansion valve, a cold storage device, a fuel tank 2, a compressor, a power battery, a preheater, an oil pump, a laser, a water pump 3, a valve 1, a valve 2, a valve 3, a water tank 1, a water tank 2 and a water tank 3;

[0007] Among them, the condenser and the heat dissipation unit are arranged in series; the refrigerant at the outlet of the expansion valve is divided into two streams, one enters the cold storage module, and the other enters the fuel tank 2 branch, and a valve 1 is set at the inlet of the fuel tank 2; after the water tank 3 is filled with coolant, the coolant passes through the water pump 1 and the engine cylinder liner, and then flows back to the high-temperature radiator, and the heat of the coolant is taken away by the wind driven by the fan; after the water tank 2 is filled with coolant, the coolant flows out from the low-temperature radiator, flows through the water pump 2, and then is divided into three branches to flow through the generator controller branch and two hub motor controller branches, and then merges into the low-temperature radiator; after the water tank 1 is filled with coolant, the coolant passes through the water pump 3, is divided into two streams and enters the laser and power battery branches respectively, then merges, and then is divided into two streams to enter the fuel tank 2 and the cold storage respectively, and then merges back to the water pump 3; wherein a valve 3 is set at the laser inlet, and a valve 2 is set at the coolant inlet of the fuel tank 2.

[0008] Wherein, the heat dissipation unit includes a high-temperature radiator, a low-temperature radiator and a fan; the condenser, the low-temperature radiator and the high-temperature radiator are arranged in series, and the fan provides power for air flow.

[0009] Among them, the fuel tank 2 has a heat exchange structure of coolant and refrigerant inside, and an aerogel insulation layer is attached to the outside; when the temperature of the fuel tank 2 or the cold storage device is higher than 7°C, the refrigeration cycle works to store cold for the fuel tank 2 and the cold storage device, and the flow regulating valve adjusts the flow distribution of the refrigerant between the fuel tank 2 and the cold storage device to make the cold storage progress of the two consistent; when the refrigerant at the outlet of the two is lower than the refrigerant evaporation temperature, the two complete cold storage at the same time.

[0010] The cold storage device is a plate-fin phase-change cold storage device, and fins are used on the phase-change material side to enhance heat transfer; a phase-change material filling port is designed on the upper part of the plate-fin phase-change cold storage device;

[0011] The cold storage device uses a phase change material with a phase change temperature between 10 and 20°C; the cold storage device is coated with a thermal insulation material.

[0012] The present invention also provides a management method for the vehicle thermal management system equipped with a laser according to the present invention, comprising the following steps:

[0013] When the vehicle is in motion, water pump 1 is working, the coolant flows through the engine, takes away the engine heat, returns to the high-temperature radiator, and exchanges heat with the air to be cooled; water pump 2 is working, and the coolant enters three groups of branches respectively: the generator controller-generator branch and the hub motor controller-hub motor branch, and returns to the low-temperature radiator to be cooled after flowing out and merging; the refrigeration cycle is working to store cold for the fuel tank and the cold storage device, the refrigerant is condensed and releases heat through the condenser, and is throttled and cooled and reduced in pressure through the expansion valve, and then enters the cold storage device and the fuel tank 2 to evaporate, condense and gasify, and then returns to the condenser through the compressor; valve 3 is closed, valve 2 is opened, water pump 3 rotates at a low speed, and the power battery cooling cycle coolant enters the power battery through water pump 3 and returns to the fuel tank 2 and the cold storage device; the fan is working to take away the heat of the condenser, the low-temperature radiator and the high-temperature radiator.

[0014] Among them, when the vehicle emits laser while driving, the engine, generator controller, generator, hub motor controller, hub motor, power battery are cooled, and the laser is cooled at the same time; valve 3 and valve 2 are opened, water pump 3 rotates, and the coolant flows through the laser and power battery, taking away the heat of the laser and power battery, and enters the fuel tank 2 and the cold storage device respectively; the oil pump works, and the oil in the fuel tank 2 is heated up by the preheater and returns to the fuel tank 1.

[0015] A management method for a thermal management system of a vehicle equipped with a laser according to the present invention comprises the following steps: when the vehicle is stationary, a laser is emitted to cool a power battery and a laser; water pumps 1 and 2 are turned off, and the coolant flows through the laser and the power battery in two paths through water pump 3, taking away the heat of the laser and the power battery, and then returns to the fuel tank 2 and the cold storage device.

[0016] Beneficial effects:

[0017] 1. The system of the present invention uses fuel and phase change materials as cold storage media, which is beneficial to reducing the volume of the laser cooling system. It can be operated in short-term low-power and long-term high-power laser emission modes, saving energy consumption. Compared with traditional cooling systems, it is more compact and lightweight, and more suitable for ground vehicle applications.

[0018] 2. The system of the present invention has a fast response capability and can quickly reduce the temperature of the laser, thereby increasing the sustained performance of the laser.

[0019] 3. In the system of the present invention, the cold storage device uses a phase change material with a high cold storage density such as tetradecane and hexadecane, and a phase change temperature between 10 and 20°C; the cold storage device is coated with a thin layer of thermal insulation material with low thermal conductivity, such as aerogel.

[0020] 4. In the system of the present invention, the phase change cold storage adopts the plate-fin type, the phase change material filling port is designed on the upper part, and fins are used on the phase change material side to enhance heat transfer.

[0021] 5. The method of the present invention is implemented based on the system of the present invention, and uses fuel oil and phase change materials as cold storage media, which is beneficial to reducing the volume of the laser cooling system. It can be operated in short-term low-power and long-term high-power laser emission modes respectively, saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The schematic diagram of the system embodiment of the present invention.

[0023] Figure 2 Schematic diagram of a plate-fin phase-change cold storage device according to a system embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the plate-fin phase-change regenerator core in the system embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the single-cycle structure inside the core of the plate-fin phase-change regenerator in the system embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the fuel tank structure in the system embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0028] The embodiment of the present invention provides a vehicle thermal management system equipped with a laser, such as Figure 1 As shown, it includes an engine, a water pump 1, a high-temperature radiator, a low-temperature radiator, a fan, a water pump 2, a generator controller, a generator, a hub motor controller, a hub motor, a fuel tank 1, a condenser, an expansion valve, a cold storage device, a fuel tank 2, a compressor, a power battery, a preheater, an oil pump, a laser, a water pump 3, a valve 1, a valve 2, a valve 3, a water tank 1, a water tank 2 and a water tank 3.

[0029] Among them, the condenser, low-temperature radiator and high-temperature radiator are arranged in series, and the fan provides power for air flow; on the refrigeration cycle side, the refrigerant at the outlet of the expansion valve is divided into two streams, one enters the cold storage module, and the other enters the fuel tank 2 branch, and a valve 1 is set at the inlet of the fuel tank 2; after the water tank 3 is filled with coolant, the coolant passes through the water pump 1 and the engine cylinder sleeve, and then flows back to the high-temperature radiator, and the heat of the coolant is taken away by the wind driven by the fan; after the water tank 2 is filled with coolant, the coolant flows out of the low-temperature radiator, flows through the water pump 2, and then is divided into three branches to flow through the generator controller branch and two hub motor controller branches, and then merges into the low-temperature radiator; after the water tank 1 is filled with coolant, the coolant passes through the water pump 3, is divided into two branches, enters the laser and power battery branches respectively, and then merges, and then is divided into two branches to enter the fuel tank 2 and the cold storage respectively, and then merges back to the water pump 3; wherein the laser inlet is provided with a valve 3, and the coolant inlet of the fuel tank 2 is provided with a valve 2.

[0030] Among them, the cold storage device is Figure 2 As shown, this embodiment adopts a plate-fin phase-change cold storage device; Figure 3 Schematic diagram of the plate-fin phase-change regenerator core in the system embodiment of the present invention, Figure 4 Schematic diagram of the single-cycle structure inside the core of the plate-fin phase-change regenerator in the system embodiment of the present invention.

[0031] Normally, the engine uses the oil in fuel tank 1. When the power battery discharges at a high rate and generates heat, the oil in fuel tank 2 absorbs part of the heat of the power battery through the oil pump and preheater and enters fuel tank 1. Fuel tank 2 has a heat exchange structure for coolant and refrigerant inside, and an aerogel insulation layer on the outside. When the temperature of fuel tank 2 or the cold storage device is higher than 7°C, the refrigeration cycle works to store cold for fuel tank 2 and the cold storage device. The flow regulating valve adjusts the flow distribution of the refrigerant between fuel tank 2 and the cold storage device to make the cold storage progress of the two consistent. When the refrigerant at the outlet of the two is lower than the refrigerant evaporation temperature, the two complete cold storage at the same time. Figure 5 Schematic diagram of the fuel tank structure in the system embodiment of the present invention.

[0032] Furthermore, in the system of the present invention, the phase change cold storage adopts a plate-fin type, a phase change material filling port is designed on the upper part, and fins are used on the phase change material side to enhance heat transfer.

[0033] Furthermore, in the system of the present invention, the cold storage device uses a phase change material with a high cold storage density such as tetradecane and hexadecane, and a phase change temperature between 10 and 20°C; the cold storage device is coated with a thin layer of thermal insulation material with low thermal conductivity, such as aerogel.

[0034] The present invention also provides a vehicle thermal management system equipped with a laser and a management method thereof, including the following modes:

[0035] Working mode 1: The vehicle is in driving state, involving chassis heat dissipation, cold storage, and battery charging heat dissipation. It is necessary to cool the engine, generator controller, generator, hub motor controller, hub motor, and power battery. When water pump 1 is working, the coolant flows through the engine, takes away the engine heat, returns to the high-temperature radiator, and exchanges heat with the air to be cooled. When water pump 2 is working, the coolant enters three groups of branches respectively: the generator controller-generator branch and the hub motor controller-hub motor branch, and flows out and merges to return to the low-temperature radiator to be cooled. The refrigeration cycle works to store cold in the fuel tank and cold storage. The refrigerant condenses and releases heat through the condenser, and is throttled and cooled by the expansion valve to reduce temperature and pressure. Then, it enters the cold storage and fuel tank 2 to evaporate, condense, and gasify, and then returns to the condenser through the compressor. Valve 3 is closed, valve 2 is opened, water pump 3 rotates at a low speed, and the power battery cooling cycle coolant enters the power battery through water pump 3 and returns to the fuel tank 2 and cold storage. The fan works to take away the heat of the condenser, low-temperature radiator, and high-temperature radiator.

[0036] Working mode 2: When the vehicle emits laser while driving, it involves chassis heat dissipation, laser, and battery discharge heat dissipation. In addition to cooling the engine, generator controller, generator, hub motor controller, hub motor, and power battery, the laser also needs to be cooled. Based on working mode 1, valves 3 and 2 are opened, water pump 3 rotates at high speed, and the coolant flows through the laser and power battery, taking away the heat of the laser and power battery, and enters fuel tank 2 and cold storage respectively. The oil pump is working, and the oil in fuel tank 2 is heated up by the preheater and returned to fuel tank 1.

[0037] Working mode 3: When the vehicle is stationary and emitting laser light, the power battery and laser need to be cooled. Water pump 1 and water pump 2 are turned off, and the coolant flows through the laser and power battery in two ways through water pump 3, taking away the heat of the laser and power battery, and then returns to fuel tank 2 and the cold storage device.

[0038] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle thermal management system equipped with a laser, characterized in that: It includes an engine, a water pump 1, a cooling unit, a water pump 2, a generator controller, a generator, a hub motor controller, a hub motor, a fuel tank 1, a condenser, an expansion valve, a cold storage device, a fuel tank 2, a compressor, a power battery, a preheater, an oil pump, a laser, a water pump 3, a valve 1, a valve 2, a valve 3, a water tank 1, a water tank 2 and a water tank 3; Among them, the condenser and the heat dissipation unit are arranged in series; the refrigerant at the outlet of the expansion valve is divided into two streams, one enters the cold storage module, and the other enters the fuel tank 2 branch, and a valve 1 is set at the inlet of the fuel tank 2; after the water tank 3 is filled with coolant, the coolant passes through the water pump 1 and the engine cylinder liner, and then flows back to the high-temperature radiator, and the heat of the coolant is taken away by the wind driven by the fan; after the water tank 2 is filled with coolant, the coolant flows out from the low-temperature radiator, flows through the water pump 2, and then is divided into three branches to flow through the generator controller branch and two hub motor controller branches, and then merges into the low-temperature radiator; after the water tank 1 is filled with coolant, the coolant passes through the water pump 3, is divided into two streams and enters the laser and power battery branches respectively, then merges, and then is divided into two streams to enter the fuel tank 2 and the cold storage respectively, and then merges back to the water pump 3; wherein a valve 3 is set at the laser inlet, and a valve 2 is set at the coolant inlet of the fuel tank 2.

2. The system according to claim 1, characterized in that The heat dissipation unit comprises a high-temperature radiator, a low-temperature radiator and a fan; the condenser, the low-temperature radiator and the high-temperature radiator are arranged in series, and the fan provides power for air flow.

3. The system according to claim 1 or 2, characterized in that There is a heat exchange structure of coolant and refrigerant inside the fuel tank 2, and an aerogel insulation layer is attached to the outside; when the temperature of the fuel tank 2 or the cold storage device is higher than 7°C, the refrigeration cycle works to store cold for the fuel tank 2 and the cold storage device, and the flow regulating valve adjusts the flow distribution of the refrigerant between the fuel tank 2 and the cold storage device to make the cold storage progress of the two consistent; when the refrigerant at the outlet of the two is lower than the refrigerant evaporation temperature, the two complete cold storage at the same time.

4. The system according to claim 3, characterized in that The cold storage device is a plate-fin phase-change cold storage device, and fins are used on the phase-change material side to enhance heat transfer; a phase-change material filling port is designed on the upper part of the plate-fin phase-change cold storage device; the cold storage device uses a phase-change material with a phase-change temperature between 10 and 20°C; and the cold storage device is coated with a thermal insulation material.

5. A method for managing a thermal management system of a vehicle equipped with a laser as claimed in any one of claims 2 to 4, characterized in that , including the following steps: When the vehicle is in motion, water pump 1 is working, the coolant flows through the engine, takes away the engine heat, returns to the high-temperature radiator, and exchanges heat with the air to be cooled; water pump 2 is working, and the coolant enters three groups of branches respectively: the generator controller-generator branch and the hub motor controller-hub motor branch, and returns to the low-temperature radiator to be cooled after flowing out and merging; the refrigeration cycle is working to store cold for the fuel tank and the cold storage device, the refrigerant is condensed and releases heat through the condenser, and is throttled and cooled and reduced in pressure through the expansion valve, and then enters the cold storage device and the fuel tank 2 to evaporate, condense and gasify, and then returns to the condenser through the compressor; valve 3 is closed, valve 2 is opened, water pump 3 rotates at a low speed, and the power battery cooling cycle coolant enters the power battery through water pump 3 and returns to the fuel tank 2 and the cold storage device; the fan is working to take away the heat of the condenser, the low-temperature radiator and the high-temperature radiator.

6. The management method according to claim 5, characterized in that When the vehicle emits laser while driving, the engine, generator controller, generator, hub motor controller, hub motor, power battery are cooled, and the laser is cooled at the same time; valve 3 and valve 2 are opened, water pump 3 rotates, and the coolant flows through the laser and power battery, taking away the heat of the laser and power battery, and enters the fuel tank 2 and the cold storage device respectively; the oil pump works, and the oil in the fuel tank 2 is heated up by the preheater and returned to the fuel tank 1.

7. A method for managing a thermal management system of a vehicle equipped with a laser according to any one of claims 2 to 4, characterized in that , including the following steps: when the vehicle is stationary, the laser is emitted to cool the power battery and the laser; water pump 1 and water pump 2 are turned off, and the coolant flows through the laser and the power battery through water pump 3 in two ways, taking away the heat of the laser and the power battery, and then returning to the fuel tank 2 and the cold storage device.

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