Intelligently controlled liquid cooling system

Abstract

The utility model provides an intelligent control liquid cooling system which comprises a main water pump, a main water tank, an auxiliary water pump, an auxiliary water tank, a two-way valve, a four-way valve, a cooling channel, a sensor and a control unit, the main water pump, the cooling channel and the main water tank are sequentially communicated through pipelines to form a first circulation loop. The auxiliary water pump, the cooling channel, the main water tank and the auxiliary water tank are sequentially communicated through a pipeline to form a second circulation loop, and a two-way valve is arranged on the pipeline between the main water tank and the auxiliary water tank. Water outlet pipelines of the main water pump and the auxiliary water pump are combined into one and then connected to the water inlet end of the cooling channel, the water outlet ends of the main water pump and the auxiliary water pump share one water return branch and are connected to a port P of the four-way valve, a port A of the four-way valve is communicated with the main water tank through a pipeline, and a port B of the four-way valve is communicated with the auxiliary water tank through a pipeline. And a port T of the four-way valve is communicated with the two-way valve through a pipeline. According to the utility model, through combined design and control, the liquid cooling system can work normally under various abnormal conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management, and particularly to an intelligent controlled liquid cooling system. Background Art

[0002] An energy storage power station is a power station that uses advanced energy storage technologies to store electrical energy and release it when needed. Common energy storage technologies include battery energy storage, supercapacitor energy storage, flywheel energy storage, compressed air energy storage, etc. Among them, battery energy storage is one of the most widely used energy storage technologies at present.

[0003] In order to ensure the operation of batteries or other energy storage devices under safe, efficient and durable working conditions, effective thermal management of the energy storage power station is required. The liquid cooling system is a common thermal management system that can provide efficient cooling for batteries or other energy storage devices. The liquid cooling system mainly transfers heat through a liquid medium (usually water or a special coolant) to keep the device within an appropriate working temperature range.

[0004] The basic principle of the liquid cooling system is to utilize the high heat capacity of the liquid to absorb and transfer heat. The system usually includes the following main components: 1) Water pump: responsible for circulating the coolant to ensure the flow of the coolant within the system; 2) Cooling channels: The liquid flows through the pipes around the battery modules or devices, which are usually designed as flow channels or radiators to absorb the heat generated by the battery; 3) Heat exchanger: a device that transfers the absorbed heat to an external cooling medium (such as air or cooling water) to complete the heat discharge; 4) Temperature sensor: monitors the temperature within the system to adjust the flow rate and temperature of the coolant in real time.

[0005] During the actual operation of the liquid cooling system, there are various factors that affect the cooling effect. For example, the coolant may be lost or its volume may change due to temperature changes, the pipeline may be blocked or the water pump speed regulation may be improper, resulting in too high a pump outlet pressure, or the water pump may be damaged or need maintenance. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a liquid cooling system that can perform intelligent control for different situations.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions: An intelligent controlled liquid cooling system, comprising a main water pump, a main water tank, a secondary water pump, a secondary water tank, a two-way valve, a four-way valve, a cooling channel, a sensor and a control unit; the main water pump, the cooling channel and the main water tank are sequentially connected through pipelines to form a first circulation loop; the secondary water pump, the cooling channel, the main water tank and the secondary water tank are sequentially connected through pipelines to form a second circulation loop, and a two-way valve is provided on the pipeline between the main water tank and the secondary water tank; the main water pump and the secondary water pump are in a parallel structure and both are controlled by the control unit. The control unit determines whether the main water pump and the secondary water pump work or not and controls the rotational speed according to the detected sensor signals. The outlet pipelines of the main water pump and the secondary water pump are combined and then connected to the water inlet end of the cooling channel, and the outlet ends of the main water pump and the secondary water pump share a return water branch and are connected to the P port of the four-way valve. The A port of the four-way valve is connected to the main water tank through a pipeline, the B port of the four-way valve is connected to the secondary water tank through a pipeline, and the T port of the four-way valve is connected to the two-way valve through a pipeline.

[0008] In the above technical solution, by reasonably arranging the two water pumps and the two water tanks, a first circulation loop, a second circulation loop and a return water branch are formed, and the on-off of the relevant pipelines is controlled by the two-way valve and the four-way valve. The control unit determines whether the main water pump and the secondary water pump work or not and controls the rotational speed according to the detected sensor signals; under normal circumstances, the main water pump works alone, and the coolant flows in the first circulation loop. When an abnormality occurs in the first circulation loop, the secondary water pump participates in the work. When the equipment in the first circulation loop needs to be repaired or fails, the secondary water pump works alone, and the coolant flows in the second circulation loop; when the coolant in the first circulation loop is lost or the volume of the coolant becomes smaller due to temperature change, the first circulation loop can be replenished with liquid by the secondary pump; when the pressure at the pump outlet is too high in the first circulation loop due to pipeline blockage or improper speed regulation of the main water pump, pressure relief can be carried out through the return water branch.

[0009] In one embodiment, the four-way valve is a three-position four-way valve; when the four-way valve is in the middle position, it is in a closed state, and the four interfaces of the four-way valve are not connected to each other; when the four-way valve is in the right position, the P port is connected to the A port, so that the return water branch is communicated with the main water tank, and the B port is connected to the T port, so that the secondary water tank is communicated with the two-way valve; when the four-way valve is in the left position, the P port is connected to the B port, so that the return water branch is communicated with the secondary water tank, and the A port is connected to the T port, so that the main water tank is communicated with the two-way valve.

[0010] In one embodiment, combining the control of the two-way valve, four-way valve, main water pump, and auxiliary water pump can form the following six working states: 1) Both the two-way valve and the four-way valve are closed, the main water pump is working, and the auxiliary water pump is not working. At this time, there is coolant flowing in the first circulation loop; 2) The two-way valve is closed and the four-way valve is in the right position. The main water pump and the auxiliary water pump work simultaneously. At this time, there is coolant flowing in the first circulation loop, and the auxiliary water pump replenishes the main water tank or the return end of the cooling channel through the return water branch; 3) The two-way valve is open and the four-way valve is closed. The main water pump does not work and the auxiliary water pump works. At this time, there is coolant flowing in the second circulation loop, and the main water tank and the auxiliary water tank are connected through the two-way valve; 4) The two-way valve is open and the four-way valve is closed. The main water pump and the auxiliary water pump work simultaneously. At this time, there is coolant flowing in both the first circulation loop and the second circulation loop, and the main water tank and the auxiliary water tank are connected through the two-way valve; 5) The two-way valve is open and the four-way valve is in the left position. The main water pump does not work and the auxiliary water pump works. At this time, there is coolant flowing in the second circulation loop, and the coolant discharged by the auxiliary water pump can also flow into the auxiliary water tank through the return water branch; 6) The two-way valve is closed and the four-way valve is in the left position. The main water pump works and the auxiliary water pump does not work. At this time, there is coolant flowing in the first circulation loop, and the coolant discharged by the main water pump flows into the auxiliary water tank through the return water branch.

[0011] Preferably, both the two-way valve and the four-way valve are solenoid valves.

[0012] Further, the main water tank is connected to the first heat exchanger through a pipeline, and the auxiliary water tank is connected to the second heat exchanger through a pipeline.

[0013] Further, check valves are installed on the outlet pipelines of the main water pump and the auxiliary water pump.

[0014] The beneficial effects of the present utility model are as follows: Based on the traditional liquid cooling system, the present utility model can make the entire liquid cooling system work normally under various abnormal conditions by adding an auxiliary water pump, an auxiliary water tank, a two-way valve, a four-way valve, and carrying out reasonable pipeline layout and control design. Thus, it can provide an efficient and stable cooling function for the battery or other energy storage devices, ensuring that the battery or other energy storage devices operate under safe, efficient, and durable working conditions. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the connection structure of the liquid cooling system in the embodiment of the present utility model;

[0016] The reference numerals are:

[0017] 1, main water pump; 2, main water tank; 3, auxiliary water pump; 4, auxiliary water tank; 5, cooling channel; 6, two-way valve; 7, four-way valve; 8, first heat exchanger; 9, second heat exchanger; 10, check valve. Detailed Embodiments

[0018] For the convenience of those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present utility model.

[0019] It should be noted in advance that in the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] As Figure 1 shown, an intelligent control liquid cooling system includes a main water pump 1, a main water tank 2, a sub-water pump 3, a sub-water tank 4, a two-way valve 6, a four-way valve 7, a cooling channel 5, sensors and a control unit. Both the two-way valve 6 and the four-way valve 7 are solenoid valves; the main water pump 1, the cooling channel 5, and the main water tank 2 are sequentially connected through pipelines to form a first circulation loop, and the main water tank 2 is connected to a first heat exchanger 8 through a pipeline; the sub-water pump 3, the cooling channel 5, the main water tank 2, and the sub-water tank 4 are sequentially connected through pipelines to form a second circulation loop. A two-way valve 6 is provided on the pipeline between the main water tank 2 and the sub-water tank 4, and the sub-water tank 4 is connected to a second heat exchanger 9 through a pipeline; the main water pump 1 and the sub-water pump 3 are in a parallel structure and both are controlled by the control unit. The control unit determines whether the main water pump 1 and the sub-water pump 3 work and controls the rotation speed according to the detected sensor signals. Check valves 10 are installed on the outlet pipelines of the main water pump 1 and the sub-water pump 3. The outlet pipelines of the main water pump 1 and the sub-water pump 3 merge and then are connected to the inlet end of the cooling channel 5. And the outlet ends of the main water pump 1 and the sub-water pump 3 share a return water branch and are connected to the P port of the four-way valve 7. The A port of the four-way valve 7 is connected to the main water tank 2 through a pipeline, the B port of the four-way valve 7 is connected to the sub-water tank 4 through a pipeline, and the T port of the four-way valve 7 is connected to the two-way valve 6 through a pipeline.

[0021] As Figure 1 shown, the four-way valve 7 is a three-position four-way valve; when the four-way valve 7 is in the middle position, it is in a closed state, and the four interfaces of the four-way valve 7 are not connected to each other; when the four-way valve 7 is in the right position, the P port is connected to the A port, so that the return water branch is communicated with the main water tank 2, and the B port is connected to the T port, so that the sub-water tank 4 is communicated with the two-way valve 6; when the four-way valve 7 is in the left position, the P port is connected to the B port, so that the return water branch is communicated with the sub-water tank 4, and the A port is connected to the T port, so that the main water tank 2 is communicated with the two-way valve 6.

[0022] By combining the control of the two-way valve 6, the four-way valve 7, the main water pump 1 and the sub-water pump 3 by the control unit, the following six working states can be formed:

[0023] 1) The two-way valve 6 and the four-way valve 7 are both closed. The main water pump 1 works, and the auxiliary water pump 3 does not work. At this time, the coolant flows in the first circulation loop. Under normal circumstances, the liquid cooling system adopts and maintains this working state;

[0024] 2) The two-way valve 6 is closed and the four-way valve 7 is in the right position. The main water pump 1 and the auxiliary water pump 3 work simultaneously. At this time, the coolant flows in the first circulation loop. The auxiliary water pump 3 replenishes the main water tank 2 or the return water end of the cooling channel 5 through the return water branch;

[0025] 3) The two-way valve 6 is opened and the four-way valve 7 is closed. The main water pump 1 does not work and the auxiliary water pump 3 works. At this time, the coolant flows in the second circulation loop, and the main water tank 2 and the auxiliary water tank 4 are connected through the two-way valve 6. This working state is applicable when the main water pump 1 fails or needs to be repaired;

[0026] 4) The two-way valve 6 is opened and the four-way valve 7 is closed. The main water pump 1 and the auxiliary water pump 3 work simultaneously. At this time, the coolant flows in both the first circulation loop and the second circulation loop, and the main water tank 2 and the auxiliary water tank 4 are connected through the two-way valve 6;

[0027] 5) The two-way valve 6 is opened and the four-way valve 7 is in the left position. The main water pump 1 does not work and the auxiliary water pump 3 works. At this time, the coolant flows in the second circulation loop, and the coolant discharged by the auxiliary water pump 3 can also flow into the auxiliary water tank 4 through the return water branch for pressure relief;

[0028] 6) The two-way valve 6 is closed and the four-way valve 7 is in the left position. The main water pump 1 works and the auxiliary water pump 3 does not work. At this time, the coolant flows in the first circulation loop, and the coolant discharged by the main water pump 1 flows into the auxiliary water tank 4 through the return water branch for pressure relief.

[0029] In this embodiment, by reasonably arranging two water pumps and two water tanks, a first circulation loop, a second circulation loop, and a return water branch are formed. The control unit determines whether the main water pump 1 and the auxiliary water pump 3 work and controls their speeds according to the detected sensor signals. At the same time, the control unit can also control the on / off of the relevant pipelines through the two-way valve 6 and the four-way valve 7. Under normal circumstances, the entire liquid cooling system is operated solely by the main water pump 1, and the coolant flows within the first circulation loop. When an abnormality occurs in the first circulation loop, the auxiliary water pump 3 participates in the operation. When the equipment in the first circulation loop needs to be repaired or fails, the auxiliary water pump 3 works alone, and the coolant flows within the second circulation loop. When there is a loss of coolant in the first circulation loop or the volume of the coolant decreases due to temperature changes, the first circulation loop can be replenished with coolant through the auxiliary pump. When the pressure at the pump outlet is too high in the first circulation loop due to pipeline blockage or improper speed regulation of the main water pump 1, pressure relief can be achieved through the return water branch, enabling the entire liquid cooling system to operate normally under various abnormal conditions, thereby providing an efficient and stable cooling function for the battery or other energy storage devices and ensuring that the battery or other energy storage devices operate under safe, efficient, and durable working conditions.

[0030] To enable those of ordinary skill in the art to more conveniently understand the improvements of the present utility model over the prior art, some of the drawings and descriptions of the present utility model have been simplified, and the above embodiments are preferred implementation schemes of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. An intelligent controlled liquid cooling system, characterized in that: The invention comprises a main water pump (1), a main water tank (2), an auxiliary water pump (3), an auxiliary water tank (4), a two-way valve (6), a four-way valve (7), a cooling channel (5), a sensor and a control unit; the main water pump (1), the cooling channel (5) and the main water tank (2) are connected in sequence through pipelines to form a first circulation loop; the auxiliary water pump (3), the cooling channel (5), the main water tank (2) and the auxiliary water tank (4) are connected in sequence through pipelines to form a second circulation loop, and a two-way valve (6) is provided on the pipeline between the main water tank (2) and the auxiliary water tank (4); the control unit controls the cooling channel (5) according to the control unit; The detected sensor signals are used to determine whether the main water pump (1) and the auxiliary water pump (3) are working and to control the rotation speed. The outlet pipes of the main water pump (1) and the auxiliary water pump (3) are connected to the water inlet end of the cooling channel (5) after being combined into one. The outlet pipes of the main water pump (1) and the auxiliary water pump (3) share a return branch connected to the P port of the four-way valve (7). The A port of the four-way valve (7) is connected to the main water tank (2) through a pipeline, the B port of the four-way valve (7) is connected to the auxiliary water tank (4) through a pipeline, and the T port of the four-way valve (7) is connected to the two-way valve (6) through a pipeline.

2. The intelligent controlled liquid cooling system according to claim 1, characterized in that: The four-way valve (7) is a three-position four-way valve; when the four-way valve (7) is in the middle position, it is in a closed state, and the four interfaces of the four-way valve (7) are not connected to each other; when the four-way valve (7) is in the right position, the P port is connected to the A port, thereby making the return water branch communicate with the main water tank (2), and the B port is connected to the T port, thereby making the auxiliary water tank (4) communicate with the two-way valve (6); when the four-way valve (7) is in the left position, the P port is connected to the B port, thereby making the return water branch communicate with the auxiliary water tank (4), and the A port is connected to the T port, thereby making the main water tank (2) communicate with the two-way valve (6).

3. The intelligent controlled liquid cooling system according to claim 2, characterized in that: The following six working states can be formed by combining and controlling the two-way valve (6), the four-way valve (7), the main water pump (1) and the auxiliary water pump (3): 1) The two-way valve (6) and the four-way valve (7) are both closed, the main water pump (1) is working, and the auxiliary water pump (3) is not working. At this time, coolant flows in the first circulation loop; 2) The two-way valve (6) is closed and the four-way valve (7) is in the right position. The main water pump (1) and the auxiliary water pump (3) work simultaneously. At this time, coolant flows in the first circulation loop, and the auxiliary water pump (3) replenishes the main water tank (2) or the return water end of the cooling channel (5) through the return water branch; 3) The two-way valve (6) is opened, the four-way valve (7) is closed, the main water pump (1) is not working, and the auxiliary water pump (3) is working. At this time, coolant flows in the second circulation loop, and the main water tank (2) and the auxiliary water tank (4) are connected through the two-way valve (6); 4) The two-way valve (6) is opened, the four-way valve (7) is closed, the main water pump (1) and the auxiliary water pump (3) work simultaneously, at this time, coolant flows in both the first circulation loop and the second circulation loop, and the main water tank (2) and the auxiliary water tank (4) are connected through the two-way valve (6); 5) The two-way valve (6) is open and the four-way valve (7) is in the left position. The main water pump (1) does not work, but the auxiliary water pump (3) works. At this time, coolant flows in the second circulation loop, and the coolant discharged by the auxiliary water pump (3) can also flow into the auxiliary water tank (4) through the return branch. 6) The two-way valve (6) is closed and the four-way valve (7) is in the left position. The main water pump (1) is working and the auxiliary water pump (3) is not working. At this time, coolant flows in the first circulation loop, and the coolant discharged from the main water pump (1) flows into the auxiliary water tank (4) through the return branch.

4. The intelligent controlled liquid cooling system according to claim 3, characterized in that: The two-way valve (6) and the four-way valve (7) are both solenoid valves.

5. The intelligent controlled liquid cooling system according to any one of claims 1 to 4, characterized in that: The main water tank (2) is connected to the first heat exchanger (8) through a pipeline, and the auxiliary water tank (4) is connected to the second heat exchanger (9) through a pipeline.

6. The intelligent controlled liquid cooling system according to any one of claims 1 to 4, characterized in that: One-way valves (10) are installed on the water outlet pipes of the main water pump (1) and the auxiliary water pump (3).

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