Hybrid liquid cooling system

Abstract

The utility model relates to a hybrid power liquid cooling system which comprises a water cooling system and a refrigerant cooling system. The water cooling system comprises a water pump, a radiator, a heat exchanger and a cooling system which are sequentially connected through pipelines to form circulation. The water cooling system further comprises a feed liquid temperature sensor for monitoring the feed liquid temperature, a return liquid temperature sensor for monitoring the return liquid temperature and an environment temperature sensor for monitoring the environment temperature. The refrigerant cooling system comprises a compressor, and the compressor is sequentially connected with a radiator and a heat exchanger of the water cooling system through pipelines and returns to the compressor to form circulation; cooling liquid is arranged in circulating pipes of the water cooling system and the refrigerant cooling system, and environment temperature sensors are arranged in the circulating pipes. According to the utility model, the use cost can be reduced, the influence of environment temperature or working temperature can be avoided, accurate cooling of the to-be-cooled equipment is realized, and the service life of the to-be-cooled equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid liquid cooling, in particular to a hybrid liquid cooling system. Background Art

[0002] Liquid cooling, as the name suggests, is a heat dissipation technology that uses the flow of liquid to remove heat from electronic devices (such as charging modules, battery modules, etc.) or other devices that require heat dissipation.

[0003] Liquid generally circulates in the heat dissipation system of the equipment to remove the heat generated by the equipment and achieve the purpose of cooling the equipment. The liquid can be water, ethylene glycol aqueous solution, fluorinated liquid, oil, etc.

[0004] Liquid Cooling System:

[0005] The liquid cooling system is generally composed of a water pump, a radiator, a liquid cooling module, and water pipes. The water pump is mainly responsible for providing power for the liquid and introducing the liquid into the cooled device for circulation; the radiator cools the hot liquid into cold liquid; the liquid cooling module absorbs the heat of the electronic components and transfers it to the cold liquid, thereby realizing the control of the heat dissipation of the equipment by the entire liquid cooling system.

[0006] At present, there are two main types of liquid cooling systems in the charging pile and energy storage industries. One is that the water pump provides power to make the coolant flow directly into the heat exchanger, and the coolant is taken away by the air flowing through the heat exchanger to achieve cooling, which is referred to as the "passive liquid cooling system". The other is a system that uses a refrigeration system with compressor refrigeration to cool the coolant through a heat exchanger, which is referred to as the "active liquid cooling system".

[0007] Among them, the advantages of the passive liquid cooling system are high energy efficiency, energy saving, and low operating costs of charging and energy storage equipment; the disadvantage is that the coolant temperature is greatly affected by the ambient temperature. When the ambient temperature is high, the coolant temperature will also be high, and the charging module and the battery module themselves have high requirements for high temperature resistance.

[0008] The advantage of the active liquid cooling system is that the coolant temperature can be precisely controlled and the temperature is lower; the disadvantage is that the equipment energy efficiency is relatively low and the energy consumption is high; the operating costs of charging and energy storage equipment are increased. Summary of the invention

[0009] In view of the deficiencies in the prior art, the utility model provides a hybrid liquid cooling system, which can not only reduce the cost of use, but also is not affected by the ambient temperature or the operating temperature, and can achieve precise cooling of the equipment to be cooled, thereby increasing the service life of the equipment to be cooled.

[0010] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hybrid liquid cooling system, including a water cooling system and a refrigerant cooling system;

[0011] The water cooling system comprises a water pump, a radiator, a heat exchanger and a water distributor which are connected in sequence by pipelines to form a circulation, and the water cooling system also comprises a liquid supply temperature sensor for monitoring the liquid supply temperature, a liquid return temperature sensor for monitoring the liquid return temperature and an ambient temperature sensor for monitoring the ambient temperature;

[0012] The refrigerant cooling system includes a compressor, which is connected to the radiator and heat exchanger of the water cooling system in sequence through pipelines, and returns to the compressor to form a cycle;

[0013] The circulation pipes of the water cooling system and the refrigerant cooling system are both provided with coolant and an ambient temperature sensor;

[0014] When one or more of the temperatures monitored by the liquid supply temperature sensor, the liquid return temperature sensor and the ambient temperature sensor are lower than the set temperature, the water cooling system starts circulating; when one or more of the temperatures monitored by the liquid supply temperature sensor, the liquid return temperature sensor and the ambient temperature sensor are higher than the set temperature, the water cooling system starts circulating and the refrigerant cooling system also starts circulating.

[0015] Preferably, the radiator of the water cooling system is a fan radiator, which has two flow cavities, through which the water cooling system and the refrigerant cooling system flow respectively, and share a set of heat dissipation fans. Therefore, the use cost can be reduced, and the radiator can cool the coolant of the water cooling system and the refrigerant cooling system at the same time.

[0016] Preferably, the water cooling system further comprises a water tank, in which a liquid level switch is arranged. The water tank stores coolant, and can timely replenish the coolant in the water cooling system pipeline. The liquid level switch can monitor the coolant in the water tank, and realize the operation of automatically adding coolant by controlling an external switch.

[0017] Preferably, a flow meter is also provided on the pipeline of the water cooling system, and the flow meter can control the flow of the coolant to achieve precise control.

[0018] Preferably, the refrigerant cooling system further comprises a low-pressure pressure sensor and a high-pressure pressure sensor to monitor the pressure in the refrigerant cooling system pipeline to achieve real-time monitoring.

[0019] Preferably, the control module is also included, and the water pump, the liquid supply temperature sensor, the liquid return temperature sensor, the ambient temperature sensor and the compressor are all electrically connected to the control module. Through the control module, automatic and precise control is achieved, and the use cost is reduced.

[0020] Preferably, the refrigerant cooling system further comprises a throttling device, and the throttling device is an electronic expansion valve.

[0021] Compared with the prior art, the utility model provides a hybrid liquid cooling system, which has the following beneficial effects:

[0022] The hybrid liquid cooling system includes two cooling circulation systems. The water cooling system and the refrigerant cooling system perform heat exchange by sharing a plate heat exchanger. The low-temperature refrigerant enters the plate heat exchanger to cool the coolant in the plate heat exchanger, so that the temperature of the coolant flowing out of the plate heat exchanger is reduced. With this system, it is only necessary to set one or more temperatures of the three sensors monitored by the supply temperature sensor, the return temperature sensor and the ambient temperature sensor. When one or more temperatures monitored by the supply temperature sensor, the return temperature sensor and the ambient temperature sensor are lower than the set temperature, the water cooling system starts the circulation. At this time, the cooling demand of the equipment to be cooled can be met, and the use cost can be reduced. When one or more temperatures monitored by the supply temperature sensor, the return temperature sensor and the ambient temperature sensor are higher than the set temperature, the refrigerant cooling system of the water cooling system also starts the circulation. At this time, the cooling demand of the equipment to be cooled can be met, and it can be unaffected by the ambient temperature or the working temperature, and the equipment to be cooled can be accurately cooled, thereby increasing the service life of the equipment to be cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is the control principle block diagram of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1, a hybrid liquid cooling system, see Figure 1 , a hybrid liquid cooling system includes a water cooling system 1 and a refrigerant cooling system 2.

[0027] The water cooling system 1 includes a water pump 3, a radiator 4, a heat exchanger 5 and a water distributor 6 which are connected in sequence by pipelines to form a circulation, and the water cooling system 1 also includes a liquid supply temperature sensor 7 for monitoring the supply temperature, a liquid return temperature sensor 8 for monitoring the return temperature and an ambient temperature sensor 9 for monitoring the ambient temperature. The pipeline is filled with coolant, and the liquid level of the coolant is monitored by a liquid level switch 12 arranged in a water tank 11. A flow meter 13 is also arranged on the pipeline to monitor the flow rate of the coolant in the pipeline.

[0028] The water distributor 6 is installed on the equipment to be cooled, and the coolant passes through one of the cavities of the radiator 4 in turn, flows through the heat exchanger 5, which can be a plate heat exchanger, flows through the return liquid temperature sensor 8, flows through the water distributor 6 to cool the equipment to be cooled, and then flows through the supply liquid temperature sensor 7 to form a cycle. The coolant in the water tank 11 can be used to replenish the coolant consumed or leaked in the pipeline in time.

[0029] The refrigerant cooling system 2 includes a compressor 10, which is connected to another cavity of the radiator 4 of the water cooling system 1 and the heat exchanger 5 in sequence through pipelines, and returns to the compressor 10 to form a cycle. The high-pressure pressure sensor 15 is installed on the liquid supply pipeline close to the compressor 10, and the low-pressure pressure sensor 14 is installed on the liquid return pipeline close to the compressor 10, and monitors the pressure value in the pipeline in real time. The throttling device 17 is installed on the pipeline of the refrigerant cooling system 2, and the throttling device 17 is an electronic expansion valve.

[0030] Since the radiator 4 has two cavities and shares a heat dissipation fan, the two systems can be cooled by simply turning on the heat dissipation fan, thereby reducing the use cost.

[0031] The heat exchanger 5 also has two cavities, through which coolants in the pipelines of the water cooling system 1 and the refrigerant cooling system 2 flow respectively, and the coolant in the water cooling system 1 is cooled by the coolant in the refrigerant cooling system 2 .

[0032] The ambient temperature sensor 9 is used to monitor the external ambient temperature.

[0033] See also Figure 2 As shown, in order to control the start and shut down of the two systems, the control module 16 is used for control, and the water pump 3, the liquid supply temperature sensor 7, the liquid return temperature sensor 8, the ambient temperature sensor 9 and the compressor 10 are all electrically connected to the control module 16. The control module 16 can be PLC controlled or PCB controlled.

[0034] When the utility model is used, the temperature parameter can be set. Of course, this parameter can be the temperature parameter of the liquid supply temperature sensor 7, or the temperature parameter of the liquid return temperature sensor 8 and the ambient temperature sensor 9. For example, the temperature parameter of the ambient temperature is set at 30 degrees Celsius. When the ambient temperature sensor 9 detects that the ambient temperature is lower than 30 degrees Celsius at this time, it is only necessary to start the water cooling system 1 and circulate it. When the ambient temperature sensor 9 detects that the ambient temperature is higher than 30 degrees Celsius at this time, when the water cooling system 1 is started, it is also necessary to start the refrigerant cooling system 2 to ensure the normal working temperature of the equipment to be cooled. Similarly, when the temperature parameter setting is the liquid supply temperature sensor 7 and the liquid return temperature sensor 8, for example, the liquid supply temperature sensor 7 is set at 40 degrees Celsius and the liquid return temperature sensor 8 is set at 45 degrees Celsius, then when the liquid supply temperature sensor 7 detects that the liquid supply temperature is lower than 40 degrees Celsius or the liquid return temperature sensor 8 detects that the liquid return temperature is lower than 45 degrees Celsius, the water cooling system 1 is started. If the liquid supply temperature sensor 7 detects that the liquid supply temperature is higher than 40 degrees Celsius or the liquid return temperature sensor 8 detects that the liquid return temperature is higher than 45 degrees Celsius, then when the water cooling system 1 is started, the refrigerant cooling system 2 also needs to be started to ensure the normal operating temperature of the equipment to be cooled. These three temperatures are monitored at the same time. For example, if the ambient temperature meets the standard at that time, but the liquid supply and liquid return temperatures exceed the standard, it is also necessary to start the two cooling systems at the same time. For example, if the liquid supply and liquid return temperatures are normal, but the ambient temperature exceeds the standard, it is also necessary to start the two cooling systems at the same time. This working mode can not only reduce the cost of use, but also ensure that the equipment to be cooled is not affected by the ambient temperature or working temperature, and can achieve precise cooling of the cooling equipment and increase the service life of the cooling equipment.

Claims

1. A hybrid liquid cooling system, characterized in that: It comprises a water cooling system (1) and a refrigerant cooling system (2); The water cooling system (1) comprises a water pump (3), a radiator (4), a heat exchanger (5) and a water distributor (6) which are connected in sequence by pipelines to form a circulation, and the water cooling system (1) also comprises a liquid supply temperature sensor (7) for monitoring the liquid supply temperature, a liquid return temperature sensor (8) for monitoring the liquid return temperature and an ambient temperature sensor (9) for monitoring the ambient temperature; The refrigerant cooling system (2) comprises a compressor (10), which is connected to a radiator (4) and a heat exchanger (5) of a water cooling system (1) in sequence through pipelines, and returns to the compressor (10) to form a cycle; The circulation pipes of the water cooling system (1) and the refrigerant cooling system (2) both contain cooling liquid and are provided with an ambient temperature sensor (9); When one or more of the temperatures monitored by the liquid supply temperature sensor (7), the liquid return temperature sensor (8) and the ambient temperature sensor (9) are lower than a set temperature, the water cooling system (1) starts to circulate; when one or more of the temperatures monitored by the liquid supply temperature sensor (7), the liquid return temperature sensor (8) and the ambient temperature sensor (9) are higher than a set temperature, the refrigerant cooling system (2) also starts to circulate while the water cooling system (1) starts.

2. A hybrid liquid cooling system according to claim 1, characterized in that: The radiator (4) of the water cooling system (1) is a fan radiator having two flow cavities, through which coolants of the water cooling system (1) and the refrigerant cooling system (2) flow respectively, and share a set of heat dissipation fans.

3. A hybrid liquid cooling system according to claim 1, characterized in that: The water cooling system (1) further comprises a water tank (11), in which a liquid level switch (12) is arranged.

4. A hybrid liquid cooling system according to claim 1, characterized in that: A flow meter (13) is also provided on the pipeline of the water cooling system (1).

5. The hybrid liquid cooling system according to claim 1, characterized in that: The refrigerant cooling system (2) also includes a low-pressure pressure sensor (14) and a high-pressure pressure sensor (15).

6. The hybrid liquid cooling system according to claim 1, characterized in that: It also includes a control module (16), the water pump (3), a liquid temperature sensor (7), a return liquid temperature sensor (8), an ambient temperature sensor (9) and a compressor (10), all of which are electrically connected to the control module (16).

7. The hybrid liquid cooling system according to claim 1, characterized in that: The refrigerant cooling system (2) further comprises a throttling device (17).

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