Liquid cooling device of charging pile

Abstract

The utility model discloses a liquid cooling device for a charging pile, and relates to the technical field of charging piles, the liquid cooling device specifically comprises a control module and a liquid cooling module, the control module comprises a radiator, a first water pump, a second water pump, a water tank and a controller, the liquid inlet end of the liquid cooling module is connected with the liquid outlet end of the second water pump through a liquid inlet pipe, the liquid inlet pipe is provided with a flow meter, and the flow meter is connected with the controller. The liquid inlet end of the second water pump is connected with a bottom water outlet of the water tank through a water inlet pipe. The liquid outlet end of the liquid cooling module is connected with the liquid inlet end of the first water pump through a liquid outlet pipe. According to the liquid cooling device of the charging pile, the controller can calculate the heat dissipation efficiency of the liquid cooling system by reading the liquid inlet temperature and the liquid outlet temperature of the liquid cooling module, meanwhile, the optimal heat dissipation effect is achieved by adjusting the rotating speed of the heat dissipation fan and the rotating speeds of the first water pump and the second water pump, and when the heat dissipation pressure of the module is small, the heat dissipation efficiency is improved. And the controller can reduce the rotating speed of the cooling fan, so that the noise is reduced while the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a liquid cooling device for a charging pile. Background Technique

[0002] With the vigorous promotion of new energy vehicles, charging piles are also being widely laid. At present, most of the AC-DC modules inside charging piles adopt an air-cooled structure for cooling. Due to the structural limitations of the charging piles, the size of the fans in the air-cooled structure is generally small. To meet the heat dissipation requirements, fans with higher rotational speeds need to be used, which inevitably leads to relatively large fan noise. For residential areas, the noise will seriously affect the user experience. At the same time, the dust that cannot be completely isolated in the air duct and the water vapor in the air also adhere to the internal circuit board of the module during use, affecting the heat dissipation efficiency and service life of the module, and manual cleaning of the module at regular intervals is required, which also increases the use cost of the charging pile. To solve this problem, the prior art proposes to use a liquid cooling method to cool the AC-DC module inside the charging pile.

[0003] In the related art, when the liquid cooling device is in use, the coolant usually flows through the cooling pipelines laid in the charging pile. However, during the flow of the coolant in the cooling pipelines, the temperature of the coolant gradually increases. Therefore, the temperature difference of the coolant at both ends of the cooling pipeline is relatively large, which will further lead to inconsistent cooling efficiencies of the devices at both ends of the cooling pipeline and affect the use effect. Based on this, the present application proposes a liquid cooling device for a charging pile. Content of the Utility Model

[0004] The utility model provides a liquid cooling device for a charging pile, which solves the problems that the temperature difference of the coolant at both ends of the cooling pipeline is relatively large, resulting in inconsistent cooling efficiencies of the devices at both ends of the cooling pipeline; and the noise of the heat dissipation fan is relatively large as described in the above background technique.

[0005] The utility model provides the following technical solution: A liquid cooling device for a charging pile, including a control module and a liquid cooling module. The control module includes a radiator, a water pump one, a water pump two, a water tank and a controller. The liquid inlet end of the liquid cooling module is connected to the liquid outlet end of the water pump two through a liquid inlet pipe. A flow meter is arranged on the liquid inlet pipe. The liquid inlet end of the water pump two is connected to the water outlet at the bottom of the water tank through a water inlet pipe. The liquid outlet end of the liquid cooling module is connected to the liquid inlet end of the water pump one through a liquid outlet pipe. A pressure sensor is arranged on the liquid outlet pipe. The liquid outlet end of the water pump one is connected to the liquid inlet end of the radiator through a connecting pipe. The liquid outlet end of the radiator is connected to the water inlet of the water tank through a return pipe. And a temperature sensor one is arranged at the liquid inlet end of the liquid cooling module, and a temperature sensor two is arranged at the liquid outlet end of the liquid cooling module;

[0006] A pressure relief valve and a liquid level switch are arranged on the water tank;

[0007] The liquid cooling module includes a cooling pipe, and adjusting structures are arranged at intervals on the cooling pipe. The adjusting structure includes a housing, a liquid inlet end pipe and a liquid discharge end pipe arranged on the housing, and a heat exchange pipe arranged in the inner cavity of the housing. The heat exchange pipe is wound around the cooling pipe. The liquid inlet end pipe and the liquid discharge end pipe are connected through the heat exchange pipe. The liquid inlet end of the cooling pipe and the liquid inlet end of the liquid inlet end pipe are both connected to one end of the liquid inlet pipe away from the second water pump. The liquid outlet end of the cooling pipe and the liquid outlet end of the liquid discharge end pipe are both connected to one end of the liquid outlet pipe away from the first water pump.

[0008] Preferably, a one-way valve is arranged at one end of the liquid discharge end pipe, and heat insulation pads are wrapped on the outer surfaces of the liquid discharge end pipe, the liquid inlet end pipe and the housing.

[0009] Preferably, the fluid flow direction in the cooling pipe is opposite to the fluid flow direction in the heat exchange pipe.

[0010] Preferably, a cooling fan is installed at the front end of the radiator.

[0011] Preferably, the pressure relief valve is installed at the top of the water tank, a water replenishing valve is arranged at the top of the water tank, and an electric valve I is installed at the water outlet at the bottom of the water tank.

[0012] Preferably, an electric ball valve II is arranged on the liquid inlet pipe, and the electric ball valve II is located on the side of the flow meter away from the second water pump.

[0013] Preferably, an electric ball valve III is arranged on the connecting pipe.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. For the liquid cooling device of the charging pile, the controller can calculate the heat dissipation efficiency of the liquid cooling system by reading the inlet temperature and outlet temperature of the liquid cooling module. At the same time, by adjusting the rotation speeds of the cooling fan, the first water pump and the second water pump, the best heat dissipation effect can be achieved. And when the heat dissipation pressure of the module is small, the controller can reduce the rotation speed of the cooling fan, reduce energy consumption and reduce noise at the same time.

[0016] 2. For the liquid cooling device of the charging pile, through the arrangement of the adjusting structure, the second water pump can pump a part of the cooling water into the heat exchange pipe, and the water in the heat exchange pipe cools the water in the cooling pipe, shortening the temperature difference of the cooling water at both ends of the cooling pipe and improving the cooling balance at different positions in the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic block diagram of a liquid cooling device for a charging pile provided by the present utility model;

[0018] Figure 2 It is a schematic diagram of a control module in an embodiment of the present utility model;

[0019] Figure 3 Left side schematic view of Figure 2 ;

[0020] Figure 4 Back side schematic view of Figure 2 ;

[0021] Figure 5 Bottom view schematic of the control module in the embodiment of the present utility model;

[0022] Figure 6 Schematic of the structure cooling pipe of the present utility model.

[0023] In the figure: 1, radiator; 2, cooling fan; 3, electric ball valve three; 4, water pump one; 5, pressure sensor; 6, temperature sensor two; 7, liquid cooling module; 8, temperature sensor one; 9, electric ball valve two; 10, flowmeter; 11, water pump two; 12, electric valve one; 13, liquid level switch; 14, pressure relief valve; 15, water tank; 16, return pipe; 17, controller; 18, fixing bracket; 19, liquid outlet pipe; 20, liquid inlet pipe; 21, water inlet pipe; 22, connecting pipe; 23, cooling pipe; 24, housing; 25, liquid inlet end pipe; 26, liquid discharge end pipe; 27, heat exchange pipe; 28, make-up water valve. Specific embodiments

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model provides a liquid cooling device for a charging pile, including a control module and a liquid cooling module 7. The control module includes a radiator 1, a water pump one 4, a water pump two 11, a water tank 15 and a controller 17. The liquid cooling module 7 is arranged between the radiator 1 and the water tank 15. The liquid inlet end of the liquid cooling module 7 is connected to the water outlet of the water tank 15 through the water pump two 11, and the liquid inlet end of the liquid cooling module 7 is connected to the liquid outlet end of the water pump two 11 through a liquid inlet pipe 20. A flowmeter 10 and an electric ball valve two 9 are arranged on the liquid inlet pipe 20, and the electric ball valve two 9 is located on the side of the flowmeter 10 away from the water pump two 11; the liquid inlet end of the water pump two 11 is connected to the bottom water outlet of the water tank 15 through a water inlet pipe 21, and an electric valve one 12 is installed at the bottom water outlet of the water tank 15. Through the arrangement of the water pump two 11, the work of the water pump two 11 can pump the water in the water tank 15 into the liquid cooling module 7.

[0026] The liquid outlet end of the liquid cooling module 7 is connected to the liquid inlet end of the radiator 1 through the first water pump 4. The liquid outlet end of the liquid cooling module 7 is connected to the liquid inlet end of the first water pump 4 through the liquid outlet pipe 19. The liquid outlet end of the first water pump 4 is connected to the liquid inlet end of the radiator 1 through the connecting pipe 22. An electric ball valve three 3 is provided on the connecting pipe 22. By setting the first water pump 4, the water discharged from the liquid cooling module 7 can be pumped into the radiator 1 by the first water pump 4, and the radiator 1 can cool the water. A cooling fan 2 is installed at the front end of the radiator 1, and the heat of the radiator 1 is carried away through air convection.

[0027] The liquid outlet end of the radiator 1 is connected to the water inlet of the water tank 15 through the return pipe 16. The cooled water flows back into the water tank 15 through the return pipe 16, realizing the recycling of the cooled water.

[0028] A first temperature sensor 8 is provided at the liquid inlet end of the liquid cooling module 7, and a second temperature sensor 6 is provided at the liquid outlet end of the liquid cooling module 7. The first temperature sensor 8 can detect the liquid inlet temperature of the liquid cooling module 7, and the second temperature sensor 6 can detect the liquid outlet temperature of the liquid cooling module 7. The controller can calculate the heat dissipation efficiency of the liquid cooling system by reading the liquid inlet temperature and the liquid outlet temperature of the liquid cooling module 7. At the same time, by adjusting the rotation speed of the cooling fan 2 and the rotation speeds of the first water pump 4 and the second water pump 11, the best heat dissipation effect can be achieved. And when the heat dissipation pressure of the liquid cooling module is small, the rotation speed of the cooling fan 2 can be reduced to reduce energy consumption and noise at the same time.

[0029] In addition, a pressure sensor 5 is used to detect the pressure of the above pipeline in real time. The pressure sensor 5 is provided on the liquid outlet pipe 19. A pressure relief valve 14 is provided at the top of the water tank 15. When the pressure in the pipeline is too large and exceeds the requirement, the air at the top of the water tank 15 can be discharged by the pressure relief valve 14 to relieve the system pressure.

[0030] A liquid level switch 13 is provided on the water tank 15. Preferably, the liquid level switch 13 is provided on the side of the water tank 15. The liquid level switch 13 can be used to detect the height of the cooled water level inside the external water tank 15. If the liquid level is lower than the liquid level required by the system, the controller 17 will receive a warning and stop the operation of the charging pile. A water replenishing valve 28 is provided at the top of the water tank 15, which is convenient for replenishing water to the water tank 15.

[0031] When the liquid cooling device is in use, the control module can be arranged outside the charging pile, and the structure of the control module can be as Figures 2 to 5 shown. The control module is installed on the fixed bracket 18, and the fixed bracket 18 is used to support the control module.

[0032] The liquid cooling module 7 is arranged inside the charging pile, and the liquid cooling module 7 is used to cool down the charging pile. The liquid cooling module 7 includes a cooling pipe 23, which is arranged inside the charging pile. The liquid inlet end of the cooling pipe 23 is connected to one end of the liquid inlet pipe 20 far away from the second water pump 11, and the liquid outlet end of the cooling pipe 23 is connected to one end of the liquid outlet pipe 19 far away from the first water pump 4. The second water pump 11 pumps the cooling water into the cooling pipe 23. During the flow of the cooling water in the cooling pipe 23, heat exchange can occur with the components inside the charging pile, thereby realizing the cooling of the components inside the charging pile.

[0033] Adjusting structures are arranged at intervals on the cooling pipe 23. The adjusting structure includes a housing 24, a liquid inlet end pipe 25 and a liquid discharge end pipe 26 arranged on the housing 24, and a heat exchange pipe 27 arranged inside the cavity of the housing 24. The heat exchange pipe 27 is wound around the cooling pipe 23. The liquid inlet end pipe 25 and the liquid discharge end pipe 26 are connected through the heat exchange pipe 27. One end of the heat exchange pipe 27 is connected to the liquid outlet end of the liquid inlet end pipe 25, and the other end of the heat exchange pipe 27 is connected to the liquid inlet end of the liquid discharge end pipe 26. The liquid inlet end of the liquid inlet end pipe 25 is connected to one end of the liquid inlet pipe 20 far away from the second water pump 11, and the liquid outlet end of the liquid discharge end pipe 26 is connected to one end of the liquid outlet pipe 19 far away from the first water pump 4. The second water pump 11 can pump the cooling water into the heat exchange pipe 27. The cooling water in the heat exchange pipe 27 and the cooling water in the cooling pipe 23 can generate heat exchange, reducing the temperature of the cooling water, thereby shortening the temperature difference of the coolant at different positions of the cooling pipe 23 and ensuring the cooling efficiency of the charging pile. The warmed water in the heat exchange pipe 27 can flow back to the radiator 1.

[0034] The fluid flow direction in the cooling pipe 23 is opposite to the fluid flow direction in the heat exchange pipe 27, improving the cooling efficiency. A one-way valve is arranged at one end of the liquid discharge end pipe 26. Heat insulation pads are wrapped on the outer surfaces of the liquid discharge end pipe 26, the liquid inlet end pipe 25 and the housing 24 to reduce the influence of the external environment on the water flowing through the adjusting structure.

[0035] Through the above description, it can be seen that when the liquid cooling module is in use, the adjusting structure can be used to cool the coolant flowing in the cooling pipe 23, improving the cooling balance at different positions inside the charging pile.

[0036] All the electrical components involved in this application are prior arts, and those skilled in the art understand their connection methods. Through those skilled in the art, all the electrical components in this application are connected to their adapted power supplies through wires, and a suitable controller is selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, please refer to the following description. The electrical connection is completed in the order of the working sequence of each electrical component. Its detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be made.

[0037] In summary, when the liquid cooling device of the charging pile is in use, the water pump II 11 pumps the cooling water in the water tank 15 into the liquid cooling module 7. During the flow of the cooling water in the liquid cooling module 7, the charging pile can be cooled, realizing the liquid cooling operation of the charging pile. The heated water is pumped into the radiator 1 by the water pump I 4. The radiator 1 cools the water, and the cooled water flows back into the water tank 15 through the return pipe 16, realizing the recycling of water. During this process, the controller 17 can calculate the heat dissipation efficiency of the liquid cooling system by reading the inlet liquid temperature and outlet liquid temperature of the liquid cooling module 7. At the same time, by adjusting the rotation speed of the cooling fan 2 and the rotation speeds of the water pump I 4 and the water pump II 11, the best heat dissipation effect can be achieved; the liquid level switch 13 detects the water volume in the water tank 15 in real time. If the liquid level is lower than the liquid level required by the system, the controller 17 will receive a warning and stop the operation of the charging pile; when the pipeline pressure is too high and exceeds the requirement, the pressure relief valve 14 can automatically relieve the pressure, discharge the air at the top of the water tank 15, relieve the pipeline pressure, and during the flow of the cooling water in the cooling pipe 23, the water pump II 11 can pump a part of the cooling water into the heat exchange pipe 27. The water in the heat exchange pipe 27 cools the water in the cooling pipe 23, shortening the temperature difference between the two parts of the cooling water in the cooling pipe 23 and improving the cooling balance at different positions in the charging pile.

[0038] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as mature bolts in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling device for a charging pile, comprising a control module and a liquid cooling module (7), characterized in that: The control module includes a radiator (1), a first water pump (4), a second water pump (11), a water tank (15) and a controller (17). The liquid inlet end of the liquid cooling module (7) is connected to the liquid outlet end of the second water pump (11) through a liquid inlet pipe (20). A flow meter (10) is provided on the liquid inlet pipe (20). The liquid inlet end of the second water pump (11) is connected to the bottom water outlet of the water tank (15) through a water inlet pipe (21). The liquid outlet end of the liquid cooling module (7) is connected to the liquid inlet end of the first water pump (4) through a liquid outlet pipe (19). A pressure sensor (5) is provided on the liquid outlet pipe (19). The liquid outlet end of the first water pump (4) is connected to the liquid inlet end of the radiator (1) through a connecting pipe (22). The liquid outlet end of the radiator (1) is connected to the water inlet of the water tank (15) through a return pipe (16). A first temperature sensor (8) is provided at the liquid inlet end of the liquid cooling module (7), and a second temperature sensor (6) is provided at the liquid outlet end of the liquid cooling module (7). A pressure relief valve (14) and a liquid level switch (13) are provided on the water tank (15). The liquid cooling module (7) includes a cooling pipe (23). An adjusting structure is provided at intervals on the cooling pipe (23). The adjusting structure includes a housing (24), a liquid inlet end pipe (25) and a liquid discharge end pipe (26) provided on the housing (24), and a heat exchange pipe (27) provided in the inner cavity of the housing (24). The heat exchange pipe (27) is wound around the cooling pipe (23). The liquid inlet end pipe (25) is connected to the liquid discharge end pipe (26) through the heat exchange pipe (27). The liquid inlet end of the cooling pipe (23) and the liquid inlet end of the liquid inlet end pipe (25) are both connected to one end of the liquid inlet pipe (20) away from the second water pump (11). The liquid outlet end of the cooling pipe (23) and the liquid outlet end of the liquid discharge end pipe (26) are both connected to one end of the liquid outlet pipe (19) away from the first water pump (4).

2. The liquid cooling device of a charging pile according to claim 1, wherein: A check valve is provided at one end of the liquid discharge end pipe (26). Heat insulation pads are wrapped on the outer surfaces of the liquid discharge end pipe (26), the liquid inlet end pipe (25) and the housing (24).

3. The liquid cooling device of a charging pile according to claim 1, characterized in that: The flow direction of the fluid in the cooling pipe (23) is opposite to the flow direction of the fluid in the heat exchange pipe (27).

4. The liquid cooling device of a charging pile according to claim 1, wherein: A cooling fan (2) is installed at the front end of the radiator (1).

5. The liquid cooling device of a charging pile according to claim 1, characterized in that: The pressure relief valve (14) is installed on the top of the water tank (15). A water replenishing valve (28) is provided on the top of the water tank (15). An electric valve one (12) is installed at the bottom water outlet of the water tank (15).

6. The liquid cooling device of a charging pile according to claim 1, characterized in that: An electric ball valve two (9) is provided on the liquid inlet pipe (20). The electric ball valve two (9) is located on the side of the flow meter (10) away from the second water pump (11).

7. The liquid cooling device of a charging pile according to claim 1, characterized in that: An electric ball valve three (3) is provided on the connecting pipe (22).

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