Charging pile with heat dissipation device

Abstract

The utility model discloses a charging pile with a heat dissipation device. The charging pile comprises a charging pile main body and a heat dissipation device integrated in the charging pile main body. The heat dissipation device comprises a liquid storage tank, a circulating pump, a cooling plate, a heat exchanger and a pipeline. The liquid storage tank is filled with a coolant, the coolant is conveyed to the cooling plate through the circulating pump, and the cooling plate is attached to a heating element of the charging module for heat exchange so as to take away heat. And then, the coolant enters the heat exchanger for cooling and then returns to the liquid storage tank to form circulation. The heat exchanger adopts an air cooling design and comprises a condenser and a heat dissipation fan, and external cold air is introduced through an air inlet grille for heat dissipation. And the cooling plate adopts an S-shaped runner groove design and is provided with a plurality of runner grooves connected in parallel, so that the heat dissipation efficiency is improved. The heat dissipation device also adopts a backup design, and is provided with two circulating pumps and two heat dissipation fans, so that the system reliability is ensured, the stable operation of the charging pile can be kept under a high-load condition, the charging efficiency is improved, the equipment safety is ensured, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of charging equipment, and in particular to a charging pile with a heat dissipation device. Background Art

[0002] With the overall upgrade of the layout of the new energy industry, the requirements for power battery capacity and charging time are getting higher and higher. DC high-power charging has become an inevitable trend in the future development of the new energy vehicle industry. Under this trend, the charging speed and efficiency of the charging pile have become the focus of users. However, during the charging process, a large amount of heat will be generated by the internal components of the DC charging pile. If this heat cannot be dissipated in a timely and effective manner, it will have an adverse effect on the stable operation of the internal circuit board, thereby reducing the charging efficiency and may cause safety hazards.

[0003] Therefore, designing a charging pile that can dissipate heat efficiently is of great significance for improving charging efficiency, ensuring charging safety, and extending equipment life. Utility Model Content

[0004] The utility model aims to provide a charging pile with a heat dissipation device, which can effectively solve the problem that the heat generated by high-power charging cannot be dissipated in time, ensure the stable operation of the charging pile under high load conditions, improve the charging efficiency, and ensure the safety of the equipment.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a charging pile with a heat dissipation device, comprising a charging pile body and a heat dissipation device, the heat dissipation device is integrated in the charging pile body, a charging module is arranged in the charging pile, the heat dissipation device comprises a liquid storage tank, a circulation pump, a cooling plate, a heat exchanger and a pipeline, the liquid storage tank is filled with a coolant, the output end of the liquid storage tank is connected to the input end of the circulation pump through a pipeline, the output end of the circulation pump is connected to the input end of the cooling plate through a pipeline, the cooling plate is fitted with the side of the charging module, and the output end of the cooling plate is connected to the input end of the liquid storage tank through a pipeline through a heat exchanger.

[0006] Preferably, the heat exchanger is an air-cooled heat exchanger, which includes a condenser, a heat dissipation fan is provided on one side of the condenser, and the charging pile is provided with an air intake grille.

[0007] Preferably, the cooling plate adopts an S-shaped flow channel design, and a plurality of flow channels are connected in parallel between the input end and the output end of the cooling plate.

[0008] Preferably, the heat dissipation device adopts a backup design, and is provided with two circulation pumps and two heat dissipation fans.

[0009] Preferably: the liquid storage tank is provided with an overflow port at the coolant limit position.

[0010] Preferably, a drain pipe is arranged outside the liquid storage tank, and a valve is arranged on the drain pipe, and the valve controls the connection and disconnection of the drain pipe.

[0011] Preferably: a compensator is provided at the input end of the circulation pump.

[0012] Preferably, the circulating pump is equipped with a pressure gauge, which is installed on a pipeline connected to the output end of the circulating pump. A display window is provided on the back of the charging pile, and the size of the display window is adapted to the outer contour of the pressure gauge.

[0013] Preferably, the pipeline includes a hard pipe and a soft pipe, the hard pipe is made of 304L stainless steel, and the soft pipe is made of EPDM material.

[0014] Compared with the prior art, the utility model has the following advantages and effects:

[0015] The utility model ensures that the coolant circulates in the system by adopting a combined design of a circulating pump, a cooling plate and a heat exchanger, thereby quickly taking away the heat generated by the heating elements inside the charging module, thereby achieving efficient heat dissipation and ensuring the stable operation of the charging pile under high load conditions; the heat exchanger adopts an air-cooled design, combined with a condenser and a heat dissipation fan, and introduces external cold air through the air intake grille to improve the heat dissipation efficiency, effectively reduce the coolant temperature, and ensure the heat dissipation effect of the system; the cooling plate adopts an S-shaped flow channel design, and multiple parallel flow channel grooves ensure that the coolant flows evenly in the flow channel, increase flow disturbance, improve the convection heat transfer coefficient, further improve the heat dissipation effect, and save coolant; the heat dissipation device is equipped with two circulating pumps and two heat dissipation fans, and adopts a cold backup mode. When one device fails, the system automatically switches to the backup device, thereby enhancing the reliability of the heat dissipation device and ensuring the continuous and stable operation of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a charging pile with a heat dissipation device according to an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of a charging pile with a heat dissipation device according to an embodiment of the utility model.

[0018] Figure 3 It is a schematic structural diagram of a cooling plate according to an embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of the pipe connection principle of the heat dissipation device of an embodiment of the utility model.

[0020] Figure numbers: charging pile 1, charging module 11, air intake grille 12, display window 13, heat dissipation device 2, liquid storage tank 3, overflow port 31, drain pipe 32, valve 33, circulating pump 4, cooling plate 5, flow channel 51, heat exchanger 6, condenser 61, heat dissipation fan 62, pipeline 7, pressure gauge 8. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] Embodiment 1:

[0023] See also Figure 1 - Figure 4 In this embodiment, a charging pile 1 with a heat dissipation device 2 is involved, which is specifically used for charging new energy vehicles, and specifically includes: a charging pile 1 body and a heat dissipation device 2, the heat dissipation device 2 is integrated in the charging pile 1 body, and a charging module is arranged in the charging pile 1. The heat dissipation device 2 includes a liquid storage tank 3, a circulating pump 4, a cooling plate 5, a heat exchanger 6 and a pipeline 7. The liquid storage tank 3 is filled with a coolant, and the output end of the liquid storage tank 3 is connected to the input end of the circulating pump 4 through the pipeline 7, and the output end of the circulating pump 4 is connected to the input end of the cooling plate 5 through the pipeline 7. The cooling plate 5 is fitted with the side of the charging module, and the output end of the cooling plate 5 is connected to the input end of the liquid storage tank 3 through the pipeline 7 and the heat exchanger 6.

[0024] Specifically, in this embodiment, the circulating pump 4, as the power element of the entire heat dissipation device 2, must overcome the resistance in the circulating pipeline 7 and drive the coolant into the pipeline 7 for heat dissipation circulation. The coolant comes out of the liquid storage tank 3 and enters the liquid-cooled charging module cooling plate 5 through the circulating pump 4. The coolant exchanges heat with the heating element of the charging module through the cooling plate 5, taking away the heat generated by the heating element inside the charging module. After the coolant comes out of the cooling plate 5, it enters the radiator for cooling, and then returns to the liquid storage tank 3 from the radiator. This cycle ensures that the charging module can work stably under high load conditions. This embodiment selects an ethylene glycol aqueous solution with a volume fraction of 56% as a coolant, and selects graphene powder as a solid phase to fill the coolant. The ethylene glycol aqueous solution is selected as a coolant, which has the advantages of excellent low-temperature performance, good heat exchange performance, and low stability. At the same time, graphene powder is added to form a liquid-solid two-phase heat transfer medium to improve the heat dissipation efficiency.

[0025] The utility model uses a circulating pump 4 to provide power to deliver the coolant to the cooling plate 5 of the liquid-cooled charging module at a certain flow rate and pressure. After entering the cooling plate 5, the coolant absorbs the heat generated by the heating element inside the charging module through convection heat exchange and heats up, while the heating element inside the charging module is cooled; the heated coolant flows back to the heat exchanger 6 for secondary heat exchange to achieve cooling of the coolant. The heat exchanger 6 adopts an air-cooled design, which includes a condenser 61 inside and a heat dissipation fan 62 installed outside. The condenser 61 transfers the heat in the coolant to the wall of the condenser 61 through heat conduction, and the heat dissipation fan 62 takes away the heat from the wall of the condenser 61 by accelerating the air flow. The heat dissipation fan 62 is installed on one side of the condenser 61. When the fan is running, the outside cold air is introduced through the air intake grille 12 on the charging pile 1, and the air flows through the surface of the condenser 61, taking away the heat on the condenser 61, reducing the temperature of the coolant, and completing the heat exchange process.

[0026] See also Figure 4 The basic working principle of the cooling plate 5 is that a liquid-solid two-phase flow coolant flows through the flow channel groove 51 processed on the panel, and the liquid phase and powder solid phase in the coolant take away the heat emitted by the high thermal power electronic components arranged on the surface of the cold plate, thereby achieving heat dissipation of the entire equipment. Commonly used cold plate substrates are generally high thermal conductivity materials such as copper and aluminum. The cooling plate 5 in this embodiment adopts an S-shaped flow channel groove 51 design. The change in the direction of the S-shaped flow channel groove 51 increases the disturbance of the flow, and the powder solid phase distributed in the fluid increases the convection heat transfer coefficient, which solves the problem of uneven flow distribution in the flow channel groove 51, improves the heat dissipation effect of the cold plate to a certain extent, and saves water intake. In addition, a plurality of flow channels 51 ( Figure 4 Taking three as an example), the flow channels 51 are evenly distributed, so that the coolant in a single flow channel 51 maintains a certain flow speed under the same flow rate, thereby maintaining better heat dissipation performance.

[0027] See also Figure 4 The heat dissipation device 2 adopts a backup design, and is equipped with two circulation pumps 4 and two heat dissipation fans 62, adopting a cold backup mode, with one working and one backup. When the system detects a device failure, it automatically switches to the backup device, thereby increasing the reliability of the heat dissipation device 2.

[0028] The liquid storage tank 3 is provided with an overflow port 31 at the coolant limit position. When the coolant in the tank exceeds the maximum capacity during liquid replenishment, the excess coolant will be removed from the overflow port 31. A drain pipe 32 is provided on the outside of the liquid storage tank 3. A valve 33 is provided on the drain pipe 32. The valve 33 controls the connection and disconnection of the drain pipe 32, and the coolant in the heat dissipation device 2 is replaced through the drain pipe 32.

[0029] Due to the incompressibility of liquid, if a closed fluid loop system has no compensation or insufficient compensation when the temperature changes, the system pressure will change dramatically. Generally speaking, a reduction in system pressure will mainly affect the operation of the circulating pump 4, and when the pressure rises and exceeds the pressure resistance of the equipment, a great safety problem will occur. In this embodiment, a compensator is provided at the input end of the circulating pump 4 (the compensator is a two-chamber structure isolated by a bellows, one side is filled with gas). At high temperatures, the volume of the coolant expands and the gas is compressed, and the coolant enters the compensator. At low temperatures, the volume of the gas side expands, and the coolant enters the main circuit, which plays a role in controlling the pressure in the heat sink 2 and ensuring the safety of the heat sink 2.

[0030] See also Figure 1 and Figure 2 In this embodiment, the circulating pump 4 is adapted to the pressure gauge 8, and the pressure gauge 8 is installed on the pipeline 7 connected to the output end of the circulating pump 4. A display window 13 is provided on the back of the charging pile 1. The size of the display window 13 is adapted to the outer contour of the pressure gauge 8. Through the display window 13, the maintenance personnel can intuitively see the reading of the pressure gauge 8, understand the pressure data in the heat dissipation device 2, and timely discover and deal with abnormal pressure changes without opening the shell of the charging pile 1, which greatly improves the convenience of operation. In addition, the display window 13 is set on the back of the charging pile 1, which is not easy to be hit by external objects or damaged by humans, and is relatively safe.

[0031] The pipeline 7 in this embodiment includes a hard pipe and a soft pipe. The hard pipe is used to fix the fluid circuit, and the soft pipe has the function of absorbing the relative movement caused by the vibration of the unit (heat dissipation fan 62, circulation pump 4, etc.). According to the use environment and functional requirements, the hard pipe is made of 304L stainless steel with good corrosion resistance, and the pipe diameter is reasonably selected by comprehensively considering the interfaces of components such as the circulation pump 4, the radiator, and the water storage tank. The soft pipe is made of EPDM material, which has the advantages of good temperature resistance, weather resistance, and friction resistance.

[0032] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A charging pile with a heat dissipation device, comprising a charging pile body and a heat dissipation device, wherein the heat dissipation device is integrated in the charging pile body, and is characterized in that: A charging module is arranged in the charging pile, and the heat dissipation device comprises a liquid storage tank, a circulating pump, a cooling plate, a heat exchanger and a pipeline. The liquid storage tank is filled with a coolant, and the output end of the liquid storage tank is connected to the input end of the circulating pump through a pipeline, and the output end of the circulating pump is connected to the input end of the cooling plate through a pipeline. The cooling plate is fitted with the side of the charging module, and the output end of the cooling plate is connected to the input end of the liquid storage tank through a pipeline through a heat exchanger.

2. A charging pile with a heat dissipation device according to claim 1, characterized in that: The heat exchanger is an air-cooled heat exchanger, which includes a condenser. A heat dissipation fan is provided on one side of the condenser, and an air intake grille is provided on the charging pile.

3. The charging pile with a heat dissipation device according to claim 1, characterized in that: The cooling plate adopts an S-shaped flow channel design, and a plurality of flow channels are connected in parallel between the input end and the output end of the cooling plate.

4. The charging pile with a heat dissipation device according to claim 1, characterized in that: The heat dissipation device adopts a backup design, and is provided with two circulation pumps and two heat dissipation fans.

5. The charging pile with a heat dissipation device according to claim 1, characterized in that: The liquid storage tank is provided with an overflow port at the coolant limit position.

6. The charging pile with a heat dissipation device according to claim 5, characterized in that: A liquid discharge pipe is arranged outside the liquid storage tank, and a valve is arranged on the liquid discharge pipe, and the valve controls the connection and disconnection of the liquid discharge pipe.

7. The charging pile with a heat dissipation device according to claim 1, characterized in that: The input end of the circulating pump is provided with a compensator.

8. The charging pile with a heat dissipation device according to claim 7, characterized in that: The circulating pump is adapted to a pressure gauge, which is installed on a pipeline connected to the output end of the circulating pump. A display window is provided on the back of the charging pile, and the size of the display window is adapted to the outer contour of the pressure gauge.

9. A charging pile with a heat dissipation device according to claim 8, characterized in that: The pipeline includes a hard pipe and a soft pipe. The hard pipe is made of 304L stainless steel and the soft pipe is made of EPDM.

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