Compact charging gun cooling device

Abstract

The utility model discloses a compact charging gun cooling device, and relates to the technical field of charging gun cooling equipment. The cooling device comprises a machine box, a radiator, a circulating pump, a liquid outlet cavity and a refrigerant box body, the radiator is fixed to the lower portion in the machine box, the refrigerant box body is fixed to one short edge of the top of the radiator, a cooling fan is arranged above the radiator, and the circulating pump is fixed to the side wall, away from the refrigerant box body, in the machine box. One corner, located on the upper portion, of the refrigerant box body is provided with a notch, a liquid inlet cavity is fixed to the top in the case at the corner, provided with the notch, of the refrigerant box body, and a liquid outlet cavity is fixed to the bottom of the liquid inlet cavity. According to the charging gun cooling device, the case, the radiator, the circulating pump, the liquid outlet cavity and the refrigerant box body are arranged, so that the problems that the charging gun cooling device occupies a large space in a charging pile, and the heat dissipation efficiency is affected due to the fact that refrigerant heat is dissipated in the cooling device and is not isolated are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of charging gun cooling equipment, and in particular relates to a compact charging gun cooling device. Background Technology

[0002] In the operation of the charging gun cooling system, liquid cooling is required to ensure cooling efficiency. Liquid cooling is a core cooling technology for high-power fast charging of electric vehicles. It uses a coolant (such as an aqueous ethylene glycol solution) circulating inside the cable to efficiently remove the heat generated during charging. Compared to traditional air cooling, liquid cooling systems can support ultra-high currents of over 500A, enabling charging power to exceed 350kW or even 600kW. It also significantly reduces cable weight (cross-sectional area reduction of over 40%), greatly improving user convenience. However, the charging gun cooling system still has the following drawbacks in practical use:

[0003] During operation, the charging gun cooling device requires a circulating cooling medium. In the process, multiple structures need to work together to circulate the cooling medium. Therefore, the cooling device occupies a large space inside the charging pile during production.

[0004] Secondly, during the operation of the cooling device, refrigerant is directly input into the cooling device and pumped into the heat dissipation device by a circulating pump. Heat is dissipated in the cooling device and then enters the radiator for discharge. This causes the radiator to increase its heat dissipation power during operation, affecting the cooling efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a compact charging gun cooling device. By setting up a chassis, radiator, circulating pump, liquid outlet chamber and refrigerant tank, it solves the problems of the charging gun cooling device occupying a large space in the charging pile and the lack of isolation treatment for the heat dissipation of refrigerant in the cooling device, which affects the heat dissipation efficiency.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a compact charging gun cooling device, comprising a chassis, a radiator, a circulating pump, a liquid outlet chamber, and a refrigerant tank. The radiator is fixed to the lower part of the chassis, and the refrigerant tank is fixed to one short side of the top of the radiator. A cooling fan is installed above the radiator, and an air duct is fixedly connected to the top of the radiator. A circulating pump is fixed to the side wall of the chassis away from the refrigerant tank. A notch is formed at one of the upper corners of the refrigerant tank, and a liquid inlet chamber is fixed to the top of the chassis at this notch. A liquid outlet chamber is fixed to the bottom of the liquid inlet chamber. During operation, the chassis serves to fix the radiator, circulating pump, liquid outlet chamber, and refrigerant tank. The radiator dissipates heat from the refrigerant passing through it during operation, and the circulating pump circulates and delivers the refrigerant. The liquid outlet chamber outputs liquid refrigerant during operation, and the refrigerant tank is used to temporarily store the cooled refrigerant.

[0008] Furthermore, a junction box is fixed through one side of the chassis, and a protective net is fixed through the center of the top of the chassis. The junction box on the chassis connects to the equipment inside the chassis for power supply.

[0009] Furthermore, the top of the cooling fan is fixed to the protective net, and the bottom of the cooling fan is fixedly connected to the input end of the air conveying hopper. When the cooling fan is working, air is drawn in from the outside of the protective net and blown into the air conveying hopper, where it is then transported to the radiator.

[0010] Furthermore, a heat dissipation output pipe is fixedly connected to the top of the radiator on the outer side of the refrigerant tank away from the liquid outlet chamber. The end of the heat dissipation output pipe away from the radiator is fixedly connected to the refrigerant tank. A heat dissipation input pipe is fixedly connected to the top of the radiator on the outer side of the circulation pump. The end of the heat dissipation input pipe away from the radiator is fixedly connected to a connector in the liquid inlet chamber. When the refrigerant tank is in operation, the heat dissipation output pipe delivers the cooled refrigerant to the refrigerant tank, and the heat dissipation input pipe delivers the refrigerant in the liquid inlet chamber to the radiator.

[0011] Furthermore, the input end of the circulating pump is fixedly connected to a circulating input pipe, and the output end of the circulating pump is fixedly connected to a circulating output pipe. The end of the circulating input pipe away from the circulating pump is fixedly connected to the lower part of the refrigerant tank near the circulating pump, and the end of the circulating output pipe away from the circulating pump is fixedly connected to the liquid outlet chamber. When the circulating pump is working, the circulating input pipe delivers the refrigerant to the circulating pump, and then delivers it to the liquid outlet chamber through the circulating output pipe.

[0012] Furthermore, two interfaces are fixedly connected to both sides of the liquid outlet chamber and the liquid inlet chamber, and pressure sensors are fixedly connected to the side of the liquid outlet chamber and the liquid inlet chamber near the circulating pump. Temperature sensors are fixedly connected to one end of the liquid outlet chamber and the liquid inlet chamber, and the interfaces on the liquid outlet chamber and the liquid inlet chamber are connected to the equipment for conveying refrigerant.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of the charging gun cooling device occupying a large amount of space inside the charging pile by setting up a chassis, radiator, circulating pump, liquid outlet chamber, and refrigerant tank. The connector near the outside of the chassis in the liquid inlet chamber is connected to the connector for the refrigerant to be cooled, and then the refrigerant is delivered to the heat dissipation input pipe and then to the radiator. The cooling fan is then turned on, drawing air from the protective mesh on the chassis and delivering it to the air duct. In the air duct, the air diffuses into the radiator, where it dissipates the refrigerant. After cooling, the refrigerant is delivered to the heat dissipation output pipe and temporarily stored in the refrigerant tank. This allows the radiator, circulating pump, liquid outlet chamber, and refrigerant tank to be integrated into the charging pile during operation, thereby reducing the size of the cooling device and its occupation of the internal space of the charging pile.

[0015] This invention solves the problem of insufficient heat dissipation in the cooling device, which affects heat dissipation efficiency, by setting up a chassis, radiator, and liquid outlet chamber. After heat dissipation, the refrigerant is transported to the refrigerant tank through the heat dissipation output pipe. When external equipment needs to use refrigerant, the circulation pump is started, drawing the cooled refrigerant from the refrigerant tank into the circulation pump. After being pumped by the circulation pump, it is then transported to the liquid outlet chamber. After the liquid outlet chamber is connected through the connector located on the outside of the chassis, the refrigerant in the circulation pump is pumped to the liquid outlet compartment and then output to the structure using the refrigerant. This ensures that there is no interference between the refrigerant in the refrigerant tank and the heat dissipation input pipe, reducing the direct entry of refrigerant heat into the chassis, preventing heat accumulation in the chassis, and ensuring heat dissipation efficiency. At the same time, the cooling fan draws air from inside the protective mesh and then transports it to the air duct, diffusing it into the radiator. The air duct isolates the space inside the chassis from the radiator, preventing heat from the chassis from being transported to the radiator by the cooling fan, thus increasing heat dissipation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of the partially cut-open structure of a compact charging gun cooling device;

[0018] Figure 2 A three-dimensional view of a compact charging gun cooling device after removing the air delivery duct;

[0019] Figure 3 This is a three-dimensional structural diagram of the radiator;

[0020] Figure 4 A bottom-view perspective view of a compact charging gun cooling device;

[0021] Figure 5 This is a three-dimensional view of a partially cut-open structure of a compact charging gun cooling device;

[0022] Figure 6 for Figure 5 Enlarged view of the structure at point A in the image.

[0023] Figure label:

[0024] 1. Chassis; 101. Junction Box; 102. Protective Net; 2. Radiator; 201. Cooling Fan; 202. Cooling Input Pipe; 203. Cooling Output Pipe; 204. Air Delivery Duct; 3. Circulation Pump; 301. Circulation Input Pipe; 302. Circulation Output Pipe; 4. Liquid Outlet Chamber; 401. Pressure Sensor; 402. Temperature Sensor; 5. Liquid Inlet Chamber; 6. Refrigerant Tank. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation

[0026] Please see Figure 1-6This utility model relates to a compact charging gun cooling device, comprising a housing 1, a radiator 2, a circulating pump 3, a liquid outlet chamber 4, and a refrigerant tank 6. The radiator 2 is fixed inside the lower part of the housing 1. During operation, the housing 1 holds the radiator 2, circulating pump 3, liquid outlet chamber 4, and refrigerant tank 6. The radiator 2 dissipates heat from the passing refrigerant. The refrigerant tank 6 is fixed to a short side of the top of the radiator 2, serving as a transfer point for the cooled refrigerant. A cooling fan 201 is positioned above the radiator 2, and an air duct 204 is fixedly connected to the top of the radiator 2. During operation, the cooling fan 201 draws air in and delivers it into the air duct 204, where it is then diffused outwards. In the radiator 2, a circulation pump 3 is fixed on the side wall of the chassis 1 away from the refrigerant tank 6 to cool the radiator 2. The circulation pump 3 circulates and delivers refrigerant. The refrigerant tank 6 has a notch at one of its upper corners. At the corner where the refrigerant tank 6 has the notch, an inlet chamber 5 is fixed at the top of the chassis 1. An outlet chamber 4 is fixed at the bottom of the inlet chamber 5. The inlet chamber 5 delivers the refrigerant to the heat dissipation input pipe 202. The outlet chamber 4 is used to transfer the refrigerant delivered by the circulation output pipe 302. During installation, the chassis 1 is rotated 90° so that the circulation pump 3 faces downward and the refrigerant tank 6 faces upward. The chassis 1 is then installed in the charging pile of the charging gun using the mounting ears on the outside of the chassis 1.

[0027] Specifically, a junction box 101 is fixed through one side of the chassis 1, and a protective net 102 is fixed through the center of the top of the chassis 1. The junction box 101 provides power connection for the equipment inside the chassis 1, and the protective net 102 protects the cooling fan 201.

[0028] Furthermore, the top of the cooling fan 201 is fixed to the protective net 102, and the bottom of the cooling fan 201 is fixedly connected to the input end of the air conveying hopper 204. The cooling fan 201 draws air from the protective net 102 and then delivers it to the air conveying hopper 204, where it diffuses into the radiator 2.

[0029] Furthermore, a heat dissipation output pipe 203 is fixedly connected to the top of the radiator 2 on the outer side of the refrigerant tank 6 away from the liquid outlet chamber 4. The end of the heat dissipation output pipe 203 away from the radiator 2 is fixedly connected to the refrigerant tank 6. A heat dissipation input pipe 202 is fixedly connected to the top of the radiator 2 on the outer side of the circulation pump 3. The end of the heat dissipation input pipe 202 away from the radiator 2 is fixedly connected to a connector of the liquid inlet chamber 5. The refrigerant input in the liquid inlet chamber 5 is transported to the heat dissipation input pipe 202 and then to the radiator 2. After being dissipated in the radiator 2, it is transported to the heat dissipation output pipe 203 and then to the radiator 2.

[0030] The operation process of this embodiment is as follows: During operation, the connector of the liquid inlet chamber 5 near the outside of the chassis 1 is connected to the connector for the refrigerant to be cooled. The refrigerant is then transported to the heat dissipation input pipe 202 and then to the radiator 2. The cooling fan 201 is then turned on, and the air is transported through the protective net 102 on the chassis 1 to the air duct 204 and then to the radiator 2. The refrigerant passing through the radiator 2 is cooled. After cooling, the refrigerant is transported to the heat dissipation output pipe 203 and then temporarily stored in the refrigerant tank 6. This allows the radiator 2, the circulation pump 3, the liquid outlet chamber 4, and the refrigerant tank 6 to be integrated into the device, making the refrigerant cooling device smaller in size. Specific Implementation

[0031] Please see Figure 1-6 Based on the first specific embodiment, the input end of the circulating pump 3 is fixedly connected to the circulating input pipe 301, and the output end of the circulating pump 3 is fixedly connected to the circulating output pipe 302. The end of the circulating input pipe 301 away from the circulating pump 3 is fixedly connected to the lower part of the refrigerant tank 6 near the circulating pump 3. The end of the circulating output pipe 302 away from the circulating pump 3 is fixedly connected to the liquid outlet chamber 4. When the circulating pump 3 is working, a negative pressure is generated at the input end, which transports the refrigerant from the refrigerant tank 6 into the circulating pump 3, and then circulates it through the circulating pump 3 to the circulating output pipe 302, and then through the circulating output pipe 302 to the liquid outlet chamber 4, and finally through the liquid outlet chamber 4 to the equipment that needs to be cooled.

[0032] Specifically, two interfaces are fixedly connected to both sides of the liquid outlet chamber 4 and the liquid inlet chamber 5. Pressure sensors 401 are fixedly connected to the side of the liquid outlet chamber 4 and the liquid inlet chamber 5 closest to the circulating pump 3. Temperature sensors 402 are fixedly connected to one end of the liquid outlet chamber 4 and the liquid inlet chamber 5. The interface of the liquid outlet chamber 4 located on the outside of the casing 1 is connected to the input end of the equipment using refrigerant. The interface of the liquid inlet chamber 5 located on the outside of the casing 1 is connected to the connector of the refrigerant pipeline after heat exchange. The refrigerant passing through the liquid outlet chamber 4 and the liquid inlet chamber 5 has its pressure detected by the pressure sensor 401 and its temperature detected by the temperature sensor 402.

[0033] The operation process of this embodiment is as follows: During operation, after heat dissipation, the refrigerant is transported to the refrigerant tank 6 through the heat dissipation output pipe 203. When external equipment needs to use refrigerant, the circulation pump 3 is started to draw the refrigerant after heat dissipation in the refrigerant tank 6 into the circulation pump 3. After being pumped by the circulation pump 3, it is then transported to the liquid outlet chamber 4. After the liquid outlet chamber 4 is connected through the connector located on the outside of the chassis 1, the refrigerant in the circulation pump 3 is pumped to the liquid outlet chamber and then output to the structure using the refrigerant. This ensures that there is no interference between the refrigerant in the refrigerant tank 6 and the heat dissipation input pipe 202, reducing the direct entry of refrigerant heat into the chassis 1. At the same time, the cooling fan 201 draws air from the protective net 102 and then transports it to the air duct 204, which diffuses it into the radiator 2. The air duct 204 isolates the space inside the chassis 1 from the radiator 2, preventing the heat inside the chassis 1 from being transported to the radiator 2 by the cooling fan 201.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A compact charging gun cooling device, comprising a chassis (1), a radiator (2), a circulating pump (3), a liquid outlet chamber (4), and a refrigerant tank (6), characterized in that: A radiator (2) is fixed inside the lower part of the chassis (1). A refrigerant tank (6) is fixed at one short side of the top of the radiator (2). A cooling fan (201) is installed above the radiator (2). An air duct (204) is fixedly connected to the top of the radiator (2). A circulation pump (3) is fixed on the side wall of the chassis (1) away from the refrigerant tank (6). A notch is set at one corner of the refrigerant tank (6) located at the top. An inlet chamber (5) is fixed at the top of the chassis (1) at the corner where the refrigerant tank (6) is notched. An outlet chamber (4) is fixed at the bottom of the inlet chamber (5).

2. The compact charging gun cooling device according to claim 1, characterized in that: A junction box (101) is fixed through one side of the chassis (1), and a protective net (102) is fixed through the center of the top of the chassis (1).

3. The compact charging gun cooling device according to claim 1, characterized in that: The top of the cooling fan (201) is fixed to the protective net (102), and the bottom of the cooling fan (201) is fixedly connected to the input end of the air conveying hopper (204).

4. A compact charging gun cooling device according to claim 1, characterized in that: The top of the radiator (2) on the outer side of the refrigerant tank (6) away from the liquid outlet chamber (4) is fixedly connected to a heat dissipation output pipe (203). The end of the heat dissipation output pipe (203) away from the radiator (2) is fixedly connected to the refrigerant tank (6). The top of the radiator (2) on the outer side of the circulating pump (3) is fixedly connected to a heat dissipation input pipe (202). The end of the heat dissipation input pipe (202) away from the radiator (2) is fixedly connected to a connector in the liquid inlet chamber (5).

5. A compact charging gun cooling device according to claim 1, characterized in that: The input end of the circulating pump (3) is fixedly connected to the circulating input pipe (301), and the output end of the circulating pump (3) is fixedly connected to the circulating output pipe (302). The end of the circulating input pipe (301) away from the circulating pump (3) is fixedly connected to the lower part of the refrigerant box (6) near the circulating pump (3), and the end of the circulating output pipe (302) away from the circulating pump (3) is fixedly connected to the liquid outlet chamber (4).

6. A compact charging gun cooling device according to claim 1, characterized in that: The outlet chamber (4) and the inlet chamber (5) are both fixedly connected to two interfaces, and the outlet chamber (4) and the inlet chamber (5) are both fixedly connected to the pressure sensor (401) on the side near the circulating pump (3). The outlet chamber (4) and the inlet chamber (5) are both fixedly connected to a temperature sensor (402).

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