Integrated charging pile cold source system

Abstract

The utility model discloses an integrated charging pile cold source system which comprises a metal plate frame set and a cooling fan set arranged in the metal plate frame set, and the front portion of the cooling fan set is provided with a power cooling module and a terminal gun line cooling module. The power cooling module comprises a centrifugal pump mounted at the front part of the cooling fan group and a power module water storage kettle connected with an inlet of the centrifugal pump to form a first closed loop; and the terminal gun line cooling module comprises a gear pump mounted on the side surface of the centrifugal pump and a gun line terminal water storage kettle connected with the gear pump to form a second closed loop. According to the utility model, the charging equipment power module cooling module and the charging equipment gun line cooling module are integrated, and the cooling device has the advantages of small size, light weight, high cooling efficiency and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile charging equipment technical field especially relates to integrated charging pile cold source system. BACKGROUND

[0002] In the past two years, the new energy automobile market has grown substantially, with nearly 7 million new energy vehicles sold in China in 2022, a 4-fold increase from 2020. With the rapid development of new energy vehicles, the construction of charging infrastructure also needs to meet higher requirements. Currently, high-power charging piles are being developed in China. Using high-power charging piles to charge, for example, charging a full set of batteries for a regular vehicle only takes 15 minutes, and high-power charging piles are highly efficient, making them the mainstream product of future charging stations.

[0003] Currently, the charging gun line of the charging pile is cooled by liquid cooling. With the pursuit of charging efficiency, the charging current has gradually increased from the original 400A to 600A, 800A, and even higher. While high charging current speeds up charging efficiency, it also means that the charging gun line generates more heat during the charging process. The cooling of the charging gun line is particularly important during the entire charging process. However, the cooling power of the liquid cooling module in the existing technology cannot meet the cooling needs of the growing high-current charging gun line. Therefore, there is an urgent need to design a charging gun line liquid cooling module to solve the problem of heat dissipation of high-current charging gun lines. SUMMARY

[0004] To solve the above technical problems, an integrated charging pile cold source system is provided, which integrates the cooling of the charging device power module and the cooling of the charging device gun line, has the advantages of small size, light weight, high cooling efficiency, and many others.

[0005] To achieve the above purpose, the utility model discloses an integrated charging pile cold source system, which comprises a sheet metal frame group and a cooling fan group arranged in the sheet metal frame group, a power cooling module and a terminal gun line cooling module are arranged at the front of the cooling fan group, the power cooling module comprises a centrifugal pump installed at the front of the cooling fan group and a power module water storage pot connected with the inlet of the centrifugal pump, water inlet and outlet distributors connected with the power module heat exchanger arranged outside the cooling fan group are symmetrically arranged at the front of the centrifugal pump to form a first closed loop, the terminal gun line cooling module comprises a gear pump installed on the side of the centrifugal pump and a gun line terminal water storage pot connected with the gear pump, a gun line terminal heat exchanger is arranged between the gear pump and the cooling fan group, a gun line terminal upper water distributor and a gun line terminal lower water distributor connected with the charging gun line are arranged at the front of the gun line terminal water storage pot to form a second closed loop.

[0006] Further, the water inlet distributor and the water outlet distributor are structurally identical, a plurality of parallelly installed water distribution branch pipes are connected to the inner side of the water inlet distributor through the water stop quick plug group, a 90-degree nylon quick plug group is connected to the end of the water distribution branch pipe through a single-ear stepless clamp, a drain valve is arranged at the bottom of the water outlet distributor, the water inlet distributor is connected with the outlet of the centrifugal pump through the EPDM rubber profiled pipe group, the water outlet distributor is connected with the corresponding side power module heat exchanger through the EPDM rubber profiled pipe group, and the power module heat exchanger close to the water inlet distributor is connected with the power module water storage kettle to form a first closed loop.

[0007] Further, the power module heat exchanger is composed of three groups of heat exchangers, which are installed on the left and right sides and the rear of the cooling fan group, and the adjacent two groups of heat exchangers are connected through the EPDM rubber profiled pipe group.

[0008] Further, the EPDM rubber profiled pipe group is provided with a wire passing plate at the position close to the lower water distributor of the gun wire terminal, and a wall pipe is arranged on the EPDM rubber profiled pipe group close to the wire passing plate.

[0009] Further, the upper water distributor of the gun wire terminal and the lower water distributor of the gun wire terminal are structurally identical and are arranged in parallel, the upper water distributor of the gun wire terminal is arranged outside the lower water distributor of the gun wire terminal, and the upper water distributor of the gun wire terminal comprises a water distributor main body arranged at the front of the gun wire terminal water storage kettle, an aluminum wall passing water nozzle is arranged at the rear of the water distributor main body, nitrile rubber hoses are extended outward at the two sides of the water distributor main body, double-in gun wire F-shaped water nozzles are arranged at the ends of the nitrile rubber hoses, and the two double-in gun wire F-shaped water nozzles are connected with the two ends of the charging gun wire respectively.

[0010] Further, the gun wire terminal water storage kettle is connected with the inlet of the gear pump, the aluminum wall passing water nozzle at the rear of the upper water distributor of the gun wire terminal is connected with the outlet of the gear pump, the aluminum wall passing water nozzle at the rear of the lower water distributor of the gun wire terminal is connected with the inlet of the gun wire terminal heat exchanger, and the outlet of the gun wire terminal heat exchanger is connected with the gun wire terminal water storage kettle to form a second closed loop.

[0011] Further, the upper water distributor of the gun wire terminal is provided with a pressure sensor and a temperature sensor.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The water-cooled special-purpose heat dissipation system can meet the normal operation of the power module with a heat power consumption of 16KW in a 50℃ high-temperature environment;

[0014] 2. The product has small volume, light weight and strong expandability, and can be arbitrarily adjusted in position and height through the structure;

[0015] 3. The system has large pressure drop, and can normally operate and meet the performance requirements under a total resistance pressure difference of 2.6Bar;

[0016] 4. Precise control system, using PWM duty cycle method to precisely regulate the water pump and fan to meet the operation requirements under different working conditions;

[0017] 5. Closed loop feedback system, which can feedback the total pressure of the system, the inlet temperature of the system, the outlet temperature of the system, the low liquid level alarm, the water pump failure alarm and the fan speed signal when the system is running;

[0018] 6. IP65 water dust protection function combined with WF1 outdoor corrosion level, which improves the overall service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0020] Figure 1 It is the whole structure schematic diagram of the utility model.

[0021] Figure 2 It is the power cooling module schematic diagram of the utility model.

[0022] Figure 3 It is the water inlet water distributor schematic diagram of the utility model.

[0023] Figure 4 It is the terminal gun line cooling module schematic diagram of the utility model.

[0024] Figure 5 It is the power cooling module working principle diagram of the utility model.

[0025] Figure 6 It is the terminal gun line cooling module working principle diagram of the utility model.

[0026] In the drawing: 10 is sheet metal frame group;20 is power cooling module;21 is centrifugal pump;22 is power module water storage pot;23 is water inlet water distributor;231 is water stop quick plug group;232 is water distribution branch pipe;233 is single ear stepless clamp;234 is 90 degree nylon quick plug group;24 is water outlet water distributor;241 is drain valve;25 is three element ethylene propylene rubber forming pipe group;26 is power module heat exchanger;27 is wall pipe;28 is wire board;30 is terminal gun line cooling module;31 is gear pump;32 is gun line terminal water storage pot;33 is gun line terminal upper water distributor;331 is water distributor main body;332 is aluminum wall water nozzle;333 is pressure sensor;334 is temperature sensor;34 is gun line terminal lower water distributor;35 is gun line terminal heat exchanger;36 is nitrile rubber hose;37 is double inlet gun line F type water nozzle;40 is cooling fan group. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] One embodiment of the utility model, as shown in Figure 1 , Figure 2 and Figure 4 , comprises sheet metal frame group 10 and cooling fan group 40 arranged in sheet metal frame group 10, sheet metal frame group 10 is cold-rolled steel plate electrophoresis black processing, and is laser cutting forming according to design, cooling fan group 40 adopts 300W axial flow fan (0.83 cubic meters per second, maximum pressure 300Pa, running noise 75D), and comprises a group of terminal gun line cooling module fan, DC 24V PWM speed regulation, FG signal feedback, power cooling module 20 and terminal gun line cooling module 30 are arranged at the front of cooling fan group 40, power cooling module 20 comprises centrifugal pump 21 installed at the front of cooling fan group 40 and power module water storage pot 22 connected with the inlet of centrifugal pump 21, water inlet water distributor 23 and water outlet water distributor 24 connected with power module are symmetrically arranged at the front of centrifugal pump 21, and water inlet water distributor 23 and water outlet water distributor 24 are connected with power module heat exchanger 26 arranged outside cooling fan group 40 to form first closed loop, the cooling working medium of power cooling module adopts 50% water glycol solution, the highest heat-dissipating power is 18KW, the maximum flow of working medium is 0.6 L / s, the inlet temperature of heat exchanger is greater than or equal to 68 DEG C, the outlet temperature of heat exchanger is less than or equal to 60 DEG C, the maximum air flow is 1.5 m³ / s, and the maximum running noise is less than or equal to 82dB, terminal gun line cooling module 30 comprises gear pump 31 installed on the side of centrifugal pump 21 and gun line terminal water storage pot 32 connected with the inlet of gear pump 31, and gun line terminal heat exchanger 35 is arranged between gear pump 31 and cooling fan group 40, gun line terminal upper water distributor 33 and gun line terminal lower water distributor 34 connected with charging gun line are arranged at the front of gun line terminal water storage pot 32, to form second closed loop, the cooling working medium of terminal gun line cooling module is E4 heat conducting oil, the highest heat-dissipating power is 3KW, the maximum flow of working medium is 0.065 L / s, the inlet temperature of heat exchanger is greater than or equal to 80 DEG C, the outlet temperature of heat exchanger is less than or equal to 64 DEG C, the maximum air flow is 0.5 m³ / s, and the maximum running noise is less than or equal to 82dB.

[0029] As shown in Figure 2 and Figure 3As shown, the water inlet distributor 23 and the water outlet distributor 24 are the same structure and are formed by welding, the inside of the water inlet distributor 23 is connected with a plurality of parallelly installed water distribution branch pipes 232 through the water stop quick plug group 231, the end of the water distribution branch pipe 232 is connected with the 90-degree nylon quick plug group 234 through the single-ear stepless clamp 233, the bottom of the water outlet distributor 23 is provided with a drain valve 241, the water inlet distributor 23 is connected with the outlet of the centrifugal pump 21 through the three-element ethylene-propylene rubber formed pipe group 25, a 500W centrifugal water pump is adopted, the maximum flow is 128 liters per minute, the maximum pressure is 3.8 Ba, DC 24V PWM speed regulation, RD signal feedback, the water outlet distributor 24 is connected with the corresponding side power module heat exchanger 26 through the three-element ethylene-propylene rubber formed pipe group 25, the power module heat exchanger 26 near the water inlet distributor 23 side is connected with the power module water storage kettle 22 to form a first closed loop, in the running work, the sensor device of the equipment will feedback temperature, pressure, rotating speed and other information to the upper computer for judgment and control, the centrifugal pump and the cooling fan in the system are all stepless speed-regulated through PWM to meet the needs of actual working conditions.

[0030] The power module heat exchanger 26 is composed of three groups of heat exchangers, which are installed on the left and right sides and the back of the cooling fan group 40, and the adjacent two groups of heat exchangers are connected through the three-element ethylene-propylene rubber formed pipe group 25, the customized hose is special for water glycol solution, a 50mm thickness single loop plate fin heat exchanger is adopted, the total thickness of the liquid pipe is 3.0mm, the air fin wave height is 6.5mm, and the theoretical heat dissipation power of a single heat exchanger is 7KW.

[0031] The three-element ethylene-propylene rubber formed pipe group 25 is provided with a wire passing plate 28 near the position of the lower water distributor 34 of the gun line terminal, and is provided with two groups of waterproof wire passing plates, which are composed of aluminum processing parts, PP corrugated pipes and nylon waterproof heads, the three-element ethylene-propylene rubber formed pipe group 25 near the wire passing plate 28 is provided with a wall passing pipe 27, and is provided with two groups of waterproof wall passing pipes, which can be connected with 30mm rubber pipelines through aluminum turning parts.

[0032] As shown in Figure 4 The upper gun line terminal water distributor 33 and the lower gun line terminal water distributor 34 are the same structure and are arranged in parallel, the upper gun line terminal water distributor 33 is arranged outside the lower gun line terminal water distributor 34, the upper gun line terminal water distributor 33 includes a water distributor main body 331 located in the front part of the gun line terminal water storage kettle 32, the rear of the water distributor main body 331 is provided with an aluminum wall passing water nozzle 332, nitrile rubber hoses 36 are extended outward on both sides of the water distributor main body 331, double-in gun line F-shaped nozzles 37 are installed at the ends of the nitrile rubber hoses 36, and the double-in gun line F-shaped nozzles 37 on both sides are respectively connected with the two ends of the charging gun line, which is for the double-in pipe gun line structure.

[0033] The gun terminal water storage pot 32 is connected with the gear pump 31 inlet, the aluminum through-wall water nozzle 332 behind the gun terminal upper water distributor 33 is connected with the gear pump 31 outlet, the gear pump is a 200W water-oil universal gear pump, the maximum flow is 0.1 liters / second, the maximum pressure is 13 Bar, DC 24V PWM speed regulation, FG signal feedback, the aluminum through-wall water nozzle 332 behind the gun terminal lower water distributor 34 is connected with the gun terminal heat exchanger 35 inlet, the gun terminal heat exchanger 35 outlet is connected with the gun terminal water storage pot 32 to form a second closed loop, the gun terminal heat exchanger 35 adopts a 30mm thickness four-loop plate fin heat exchanger, the total thickness of the liquid pipe is 3.0mm, the air fin wave height is 6.5mm, the single heat exchanger theoretical heat dissipation power is 4KW, the high pressure end adopts a D6 inner diameter butyronitrile rubber hose, the low pressure end adopts a D8 inner diameter rubber hose, the single pipe working pressure is less than 8kg, the burst pressure is greater than 20kg, the working temperature is -40℃~100℃, and the pipeline can resist oil and water glycol solution.

[0034] The 1Mpa pressure sensor 333 and the PT1000 temperature sensor 334 are mounted on the surface of the gun terminal upper water distributor 33, in the running work, the sensor of the equipment can feedback temperature, pressure, rotating speed and other information to the upper computer for judgment and control, the centrifugal pump and the cooling fan in the system are all stepless speed regulated through PWM to meet the actual working condition needs.

[0035] The working principle of the embodiment is as shown in the figure, Figure 5 The power module cooling part is an isolated liquid cooling heat dissipation system, when the equipment runs, the working medium of the power module water storage pot is sucked by the centrifugal pump, the working medium is delivered to the water inlet of the water distributor after being pressurized by the centrifugal pump, the working medium is evenly divided to each water inlet of the power module through the water distribution branch pipe of the water inlet distributor, the working medium entering the power module exchanges heat with the wall surface of the water cooling plate body in the power module, the temperature of the working medium increases after absorbing heat, and then the working medium is discharged from the module outlet pipe to the water outlet of the water distributor, and then enters the power module heat exchanger after being combined, the hot working medium exchanges heat to the fin outside the heat exchanger through the inner wall of the heat exchanger liquid channel, the fin further exchanges heat to the surrounding air (the working medium temperature is required to be greater than the ambient temperature of the heat exchanger outside), and the cooling fan group carries away the air around the heat exchanger to the environment through mechanical force, at this time, the high-temperature working medium is cooled and then enters the liquid storage pot, and the above reciprocating work is repeated;

[0036] As shown in the figure, Figure 6As shown, the terminal gun wire cooling module is a submerged liquid cooling heat dissipation system, when the equipment is running, the working medium in the terminal gun wire storage kettle is sucked by the gear pump, the working medium is pressurized by the gear pump and then transmitted into the charging gun wire liquid inlet pipe, the working medium completely infiltrates the gun wire copper conductor in the liquid inlet pipe, the joule heat generated by the gun wire copper conductor is taken out to the gun wire liquid outlet along with the flow of the working medium, at this time, the heated working medium is transmitted to the gun wire terminal heat exchanger through the liquid outlet connecting pipeline, the high temperature working medium will transmit heat to the fin edge outside the heat exchanger through the heat exchanger liquid channel wall surface, the fin will transmit heat to the surrounding air (the working medium temperature is required to be higher than the ambient temperature of the heat exchanger outside), the cooling fan group will take away the air around the heat exchanger by mechanical force and discharge to the environment, at this time, the high temperature working medium is cooled and then transmitted into the storage kettle, through the above reciprocating cycle work.

[0037] The points to be explained are as follows: firstly, in the description of the present application, it is necessary to explain that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; secondly, in this paper, the relationship terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between the entities.

[0038] The above examples are only illustrative of the present application and do not constitute a limitation on the protection scope of the present application, any design identical or similar to the present application belongs to the protection scope of the present application.

Claims

1. An integrated charging pile cold source system, comprising a sheet metal frame group (10) and a cooling fan group (40) arranged in the sheet metal frame group (10), characterized in that, The front of the cooling fan group (40) is provided with a power cooling module (20) and a terminal gun line cooling module (30), the power cooling module (20) comprises a centrifugal pump (21) installed at the front of the cooling fan group (40) and a power module water storage pot (22) connected with the inlet of the centrifugal pump (21), the front of the centrifugal pump (21) is symmetrically provided with a water inlet distributor (23) and a water outlet distributor (24) connected with the power module, the water inlet distributor (23) and the water outlet distributor (24) are connected with the power module heat exchanger (26) arranged outside the cooling fan group (40) to form a first closed loop, and the terminal gun line cooling module (30) comprises a gear pump (31) installed on the side of the centrifugal pump (21) and a gun line terminal water storage pot (32) connected with the inlet of the gear pump (31), the gun line terminal heat exchanger (35) is arranged between the gear pump (31) and the cooling fan group (40), and the front of the gun line terminal water storage pot (32) is provided with a gun line terminal upper water distributor (33) and a gun line terminal lower water distributor (34) connected with the charging gun line, so as to form a second closed loop.

2. The integrated charging pile cold source system according to claim 1, characterized in that, The water inlet distributor (23) and the water outlet distributor (24) are the same in structure, the inside of the water inlet distributor (23) is connected with a plurality of parallelly installed water distribution branch pipes (232) through a water stop quick plug group (231), the tail end of the water distribution branch pipe (232) is connected with a 90-degree nylon quick plug group (234) through a single-ear stepless clamp (233), and the bottom of the water outlet distributor (24) is provided with a drain valve (241); the water inlet distributor (23) is connected with the outlet of the centrifugal pump (21) through a three-element ethylene-propylene rubber forming pipe group (25), the water outlet distributor (24) is connected with the power module heat exchanger (26) on the corresponding side through the three-element ethylene-propylene rubber forming pipe group (25), and the power module heat exchanger (26) near the water inlet distributor (23) side is connected with the power module water storage pot (22) to form the first closed loop.

3. The integrated charging pile cold source system according to claim 2, characterized in that, The power module heat exchanger (26) is composed of three groups of heat exchangers and is installed on the left and right sides and the rear of the cooling fan group (40), and adjacent two groups of heat exchangers are connected through the three-element ethylene-propylene rubber forming pipe group (25).

4. The integrated charging pile cold source system according to claim 3, characterized in that, The three-element ethylene-propylene rubber forming pipe group (25) is provided with a wire passing plate (28) on the inside near the gun line terminal lower water distributor (34), and the three-element ethylene-propylene rubber forming pipe group (25) near the wire passing plate (28) is provided with a wall passing pipe (27).

5. The integrated charging pile cold source system according to claim 1, characterized in that, The gun line terminal upper water distributor (33) and the gun line terminal lower water distributor (34) are the same in structure and are arranged in parallel, the gun line terminal upper water distributor (33) is arranged outside the gun line terminal lower water distributor (34), the gun line terminal upper water distributor (33) comprises a water distributor main body (331) located at the front of the gun line terminal water storage pot (32), the rear of the water distributor main body (331) is provided with an aluminum wall passing water nozzle (332), nitrile rubber hoses (36) are extended outward on the two sides of the water distributor main body (331), the tail end of the nitrile rubber hose (36) is provided with a double-in gun line F-shaped water nozzle (37), and the two double-in gun line F-shaped water nozzles (37) are respectively connected with the two ends of the charging gun line.

6. The integrated charging pile cold source system according to claim 5, characterized in that, The gun line terminal storage water kettle (32) is connected with the gear pump (31) inlet, the aluminum wall water nozzle (332) behind the gun line terminal upper water distributor (33) is connected with the gear pump (31) outlet, the aluminum wall water nozzle (332) behind the gun line terminal lower water distributor (34) is connected with the gun line terminal heat exchanger (35) inlet, and the gun line terminal heat exchanger (35) outlet is connected with the gun line terminal storage water kettle (32) to form a second closed loop.

7. The integrated charging pile cold source system according to claim 6, characterized in that, The gun line terminal upper water distributor (33) surface is provided with a pressure sensor (333) and a temperature sensor (334).

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