Charging gun liquid cooling device

Abstract

The utility model relates to the technical field of charging gun cooling, and discloses a liquid cooling device for a charging gun, which comprises a host end and a refrigeration end, the liquid outlet end of the host end is communicated with the liquid inlet end of the refrigeration end through a pipeline, and the liquid inlet end of the host end is communicated with the liquid outlet end of the refrigeration end through a pipeline. And cooling liquid passage circulation is formed. According to the liquid cooling device for the charging gun, cooling flows in the charging gun in a spiral-flow mode and exchanges heat with the interior of the charging gun, then effective heat dissipation of the charging gun is achieved, meanwhile, the arrangement of the heat exchange coil pipe enlarges the contact area with a wire, and the heat dissipation effect of the heat exchange coil pipe on the charging gun is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging gun cooling, in particular to a charging gun liquid cooling device. Background Art

[0002] With the rapid development of new energy vehicles, charging piles are indispensable for new energy vehicles, especially electric vehicles. AC slow charging cannot meet market demand due to its long waiting time and low charging efficiency. Currently, DC fast charging is the dominant method on the market. Due to the influence of current, voltage, resistance and other factors during fast charging, the charging gun is prone to heat up during charging. If the heat is not dissipated in time, it will pose a safety hazard.

[0003] Regarding the existing related technologies, the inventors believe that the following defects often exist: when the DC fast charging gun is charging, the wires of the charging gun continuously transmit large currents. When the large current passes through the charging gun and its internal circuits, due to the existence of resistance, the electrical energy will be converted into heat energy, causing the charging gun to heat up. Utility Model Content

[0004] In view of the problem that when the above-mentioned existing DC fast charging gun is charging, the wires of the charging gun continuously transmit large current. When the large current passes through the charging gun and its internal circuits, due to the existence of resistance, the electrical energy will be converted into heat energy, causing the charging gun to heat up. The present utility model is proposed.

[0005] Therefore, the purpose of the present invention is to provide a liquid cooling device for a charging gun, the purpose of which is to perform liquid cooling on the charging gun to ensure that the temperature of the charging gun is in a suitable and constant state during DC fast charging, thereby improving the safety of charging.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a charging gun liquid cooling device, comprising a host end and a cooling end, wherein the liquid outlet of the host end and the liquid inlet of the cooling end, as well as the liquid inlet of the host end and the liquid outlet of the cooling end, are connected by pipes to form a cooling liquid circulation path;

[0007] The cooling end includes a heat exchange coil, and the cable passes through the interior of the heat exchange coil. The liquid inlet end and the liquid outlet end of the heat exchange coil are respectively installed with a liquid injection pipe and a liquid return pipe;

[0008] The host end includes a machine compartment, and a liquid compartment is installed inside the machine compartment through a pad. A liquid pump for pumping coolant inside the liquid compartment is installed on one side of the machine compartment, and the liquid inlet end of the liquid pump is connected to the liquid outlet end of the liquid compartment. The liquid outlet end of the liquid pump is installed with a liquid outlet pipe, and the liquid outlet end of the liquid outlet pipe is installed through-and-through on one side of the machine compartment; a return pipe is installed at the liquid inlet end at the top of one side of the liquid compartment, and the liquid outlet end of the return pipe is installed through-and-through on one side of the machine compartment.

[0009] As a preferred solution of the charging gun liquid cooling device described in the utility model, a flow meter is installed at the vertical pipe end of the liquid outlet pipe, and temperature sensors are installed on both sides of the top of the liquid tank, and the temperature sensors are non-contact temperature sensors.

[0010] As a preferred solution of the charging gun liquid cooling device described in the utility model, three filters are embedded and installed on the other side of the machine compartment, three axial fans are installed on the side of the machine compartment close to the filter, and one axial fan is installed opposite to one filter, and a control panel is installed on one side of the top of the machine compartment, and the control panel consists of a display and buttons.

[0011] As a preferred solution of the liquid cooling device of a charging gun described in the utility model, wherein: a row of three heat dissipation components are rotatably installed inside the liquid tank, and the driving end of the heat dissipation component is located at the top of the liquid tank. At the same time, the driving ends of the two connected heat dissipation components are engaged with each other, and a driving motor for driving a heat dissipation component to rotate is installed on the top of the machine tank, and the driving end of the driving motor is connected to the driving end of the middle heat dissipation component.

[0012] As an optimal solution of the liquid cooling device for a charging gun described in the utility model, an air guide bin is welded to the side of the liquid bin close to the axial fan, and the cross-section of the air guide bin is trapezoidal, and the liquid bin and the air guide bin are both welded from aluminum alloy plates.

[0013] As a preferred solution of the liquid cooling device of a charging gun described in the utility model, wherein: the heat dissipation component includes a heat-conducting shaft rotatably installed inside the liquid tank through a bearing, the top end of the heat-conducting shaft is covered with a gear, and the outside of the heat-conducting shaft and located inside the liquid tank are covered with a row of heat-conducting plates.

[0014] As a preferred solution of the liquid cooling device for the charging gun described in the utility model, handle racks are installed on both sides of the top of the machine compartment.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model realizes effective heat dissipation of the charging gun by cooling the charging gun in a swirl flow and exchanging heat with the inside of the charging gun. At the same time, the setting of the heat exchange coil expands the contact area with the wire to improve the heat dissipation effect of the heat exchange coil on the charging gun.

[0017] 2. The utility model, under the continuous stirring of the coolant by the heat conducting plate, the coolant does not need to be shaken inside the liquid tank, which is conducive to the dissipation of heat inside the coolant. Moreover, during the shaking process, the coolant will contact the inner wall surface of the liquid tank, further exchanging heat and cooling the coolant, effectively improving the cooling effect of the coolant, thereby improving the coolant's own temperature will not rise excessively when the coolant is continuously circulated for a long time, thereby ensuring the heat exchange and cooling effect of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of a liquid cooling device for a charging gun of the present utility model.

[0020] Figure 2 This is a structural schematic diagram of the host end of a charging gun liquid cooling device of the utility model.

[0021] Figure 3 This is a structural schematic diagram of the cooling end of a charging gun liquid cooling device of the utility model.

[0022] Figure 4 This is a schematic cross-sectional structural diagram of a machine compartment of a charging gun liquid cooling device of the present invention.

[0023] Figure 5 This is a schematic structural diagram of a liquid tank of a liquid cooling device for a charging gun according to the present invention.

[0024] Figure 6 This is a structural schematic diagram of a heat dissipation component of a charging gun liquid cooling device of the utility model.

[0025] Description of reference numerals:

[0026] 1. Host end; 11. Machine compartment; 12. Filter; 13. Control panel; 14. Drive motor; 15. Handle holder; 16. Liquid tank; 17. Axial fan; 18. Air guide compartment; 19. Heat dissipation assembly; 191. Heat conduction shaft; 192. Heat conduction plate; 193. Gear; 110. Temperature sensor; 111. Return pipe; 112. Liquid outlet pipe; 113. Flow meter; 114. Liquid pump; 2. Refrigeration end; 21. Heat exchange coil; 22. Liquid injection pipe; 23. Liquid return pipe. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Reference Figure 1-6 , which is the first embodiment of the present invention, provides a charging gun liquid cooling device, which includes a host end 1 and a cooling end 2. The liquid outlet of the host end 1 and the liquid inlet of the cooling end 2, as well as the liquid inlet of the host end 1 and the liquid outlet of the cooling end 2, are connected by pipes to form a cooling liquid circulation path;

[0030] The cooling end 2 includes a heat exchange coil 21, and the cables pass through the interior of the heat exchange coil 21. The liquid inlet and outlet ends of the heat exchange coil 21 are respectively equipped with a liquid injection pipe 22 and a liquid return pipe 23. The cooling end 2 is installed at the wire end of the charging gun, and the power wires pass through the interior of the heat exchange coil 21.

[0031] The main engine end 1 includes a machine chamber 11, and a liquid tank 16 is installed inside the machine chamber 11 through a pad, and a coolant is provided inside the liquid tank 16. A liquid pump 114 for pumping the coolant inside the liquid tank 16 is installed on one side of the machine chamber 11, and the liquid inlet end of the liquid pump 114 is connected to the liquid outlet end at the bottom of one side of the liquid tank 16. The liquid outlet end of the liquid pump 114 is installed with a liquid outlet pipe 112, and the liquid outlet end of the liquid outlet pipe 112 is installed through-and-through on one side of the machine chamber 11, and a return pipe 111 is installed at the liquid inlet end at the top of one side of the liquid tank 16, and the liquid outlet end of the return pipe 111 is installed through-and-through on one side of the machine chamber 11.

[0032] The cooling fluid flows in a swirl pattern inside the charging gun, exchanging heat with the inside of the charging gun, thereby achieving effective heat dissipation of the charging gun. At the same time, the setting of the heat exchange coil 21 expands the contact area with the wire to improve the heat dissipation effect of the heat exchange coil 21 on the charging gun.

[0033] A flow meter 113 is installed at the vertical pipe end of the liquid outlet pipe 112, and temperature sensors 110 are installed on both sides of the top of the liquid tank 16, and the temperature sensors 110 are non-contact temperature sensors.

[0034] Three filters 12 are embedded on the other side of the machine compartment 11. Three axial fans 17 are installed on the side of the machine compartment 11 close to the filter 12, and one axial fan 17 is installed opposite to one filter 12. A control panel 13 is installed on one side of the top of the machine compartment 11. The control panel 13 consists of a display and buttons.

[0035] During use, the coolant is pumped from the inside of the liquid tank 16 by the liquid pump 114 and transported to the inside of the liquid filling pipe 22 through the liquid outlet pipe 112. After the coolant passes through the inside of the heat exchange coil 21, it returns to the inside of the liquid tank 16 through the return pipe 23 and the reflux pipe 111. It flows in a swirling manner inside the charging gun through cooling, exchanges heat with the inside of the charging gun, and thus effectively dissipates heat for the charging gun. At the same time, the setting of the heat exchange coil 21 expands the contact area with the wire to improve the heat dissipation effect of the heat exchange coil 21 on the charging gun.

[0036] Example 2

[0037] Reference Figure 1-6 , which is the second embodiment of the present utility model, is different from the first embodiment in that:

[0038] A row of three heat dissipation components 19 are rotatably installed inside the liquid tank 16, and the driving end of the heat dissipation component 19 is located at the top of the liquid tank 16. At the same time, the driving ends of the two connected heat dissipation components 19 are engaged with each other. A driving motor 14 for driving a heat dissipation component 19 to rotate is installed on the top of the machine chamber 11, and the driving end of the driving motor 14 is connected to the driving end of the middle heat dissipation component 19.

[0039] An air guide bin 18 is welded to one side of the liquid tank 16 close to the axial fan 17, and the cross-section of the air guide bin 18 is trapezoidal. The setting of the air guide bin 18 guides the wind blowing toward it, so that the airflow blows to both sides of the liquid tank 16, thereby improving the effect of avoiding the liquid tank 16 from being blown and dissipated by the wind. The liquid tank 16 and the air guide bin 18 are both welded by aluminum alloy plates. The liquid tank 16 is made of aluminum alloy plates. The aluminum alloy absorbs the temperature in the coolant for heat exchange. The axial fan 17 pumps the external airflow into and blows it onto the liquid tank 16 inside the machine compartment 11 to dissipate heat from the liquid tank 16, thereby realizing heat exchange and cooling of the coolant.

[0040] The heat dissipation assembly 19 includes a heat-conducting shaft 191 rotatably mounted inside the liquid tank 16 via a bearing, and the top end of the heat-conducting shaft 191 is located above the top of the liquid tank 16. A gear 193 is sleeved on the top end of the heat-conducting shaft 191, and a row of heat-conducting fins 192 are sleeved on the outside of the heat-conducting shaft 191 and located inside the liquid tank 16. Under the meshing transmission action of the two connected gears 193, the three heat-conducting shafts 191 rotate simultaneously.

[0041] The heat conducting plate 192 is driven to rotate inside the liquid tank 16. As the heat conducting plate 192 continuously stirs the coolant, the coolant does not need to be shaken inside the liquid tank 16, which is beneficial to the dissipation of heat inside the coolant. In addition, during the shaking process, the coolant will contact the inner wall surface of the liquid tank 16, further exchanging heat and cooling the coolant, effectively improving the cooling effect of the coolant, thereby improving the coolant's own temperature will not rise excessively when the coolant is circulated for a long time, thereby ensuring the heat exchange and cooling effect of the coolant.

[0042] Handle frames 15 are installed on both sides of the top of the cabin 11.

[0043] During use, the liquid tank 16 is made of aluminum alloy plate, and the aluminum alloy absorbs the temperature in the coolant to exchange heat;

[0044] The driving motor 14 drives the central heat-conducting shaft 191 to rotate. Under the meshing transmission action of the two connected gears 193, the three heat-conducting shafts 191 rotate simultaneously, thereby driving the heat-conducting plate 192 to rotate inside the liquid tank 16. As the heat-conducting plate 192 continuously stirs the coolant, the coolant does not need to be shaken inside the liquid tank 16, which is conducive to the dissipation of heat inside the coolant.

[0045] The remaining structures are the same as those of Example 1.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A charging gun liquid cooling device, characterized by: It comprises a main unit end (1) and a refrigeration end (2), wherein the liquid outlet end of the main unit end (1) and the liquid inlet end of the refrigeration end (2), as well as the liquid inlet end of the main unit end (1) and the liquid outlet end of the refrigeration end (2) are connected via pipes, forming a cooling liquid path circulation; The refrigeration end (2) includes a heat exchange coil (21), and the cable passes through the interior of the heat exchange coil (21), and the liquid inlet end and the liquid outlet end of the heat exchange coil (21) are respectively installed with a liquid injection pipe (22) and a liquid return pipe (23); The host end (1) comprises a machine chamber (11), a liquid chamber (16) is installed inside the machine chamber (11) through a pad, a liquid pump (114) for pumping cooling liquid inside the liquid chamber (16) is installed on one side of the machine chamber (11), a liquid inlet end of the liquid pump (114) is connected to a liquid outlet end of the liquid chamber (16), a liquid outlet pipe (112) is installed at the liquid outlet end of the liquid pump (114), and the liquid outlet end of the liquid outlet pipe (112) is installed through-inserted on one side of the machine chamber (11); a return pipe (111) is installed at the liquid inlet end of the top of one side of the liquid chamber (16), and the liquid outlet end of the return pipe (111) is installed through-inserted on one side of the machine chamber (11).

2. The charging gun liquid cooling device according to claim 1, characterized in that: A flow meter (113) is installed at the vertical pipe end of the liquid outlet pipe (112), and temperature sensors (110) are installed on both sides of the top of the liquid bin (16), and the temperature sensors (110) are non-contact temperature sensors.

3. The charging gun liquid cooling device according to claim 2, characterized in that: Three filters (12) are embedded and installed on the other side of the machine chamber (11), three axial flow fans (17) are installed on the side of the machine chamber (11) close to the filter (12), and one axial flow fan (17) is installed facing one filter (12), and a control panel (13) is installed on one side of the top of the machine chamber (11), and the control panel (13) consists of a display and buttons.

4. The charging gun liquid cooling device according to claim 3, characterized in that: A row of three heat dissipation components (19) are rotatably installed inside the liquid bin (16), and the driving end of the heat dissipation component (19) is located at the top of the liquid bin (16). At the same time, the driving ends of two connected heat dissipation components (19) are meshed with each other. A driving motor (14) for driving a heat dissipation component (19) to rotate is installed on the top of the machine bin (11), and the driving end of the driving motor (14) is connected to the driving end of the middle heat dissipation component (19).

5. The charging gun liquid cooling device according to claim 4, characterized in that: An air guide bin (18) is welded to one side of the liquid bin (16) close to the axial flow fan (17), and the cross section of the air guide bin (18) is trapezoidal. The liquid bin (16) and the air guide bin (18) are both welded from aluminum alloy plates.

6. The charging gun liquid cooling device according to claim 5, characterized in that: The heat dissipation assembly (19) comprises a heat-conducting shaft (191) rotatably mounted inside the liquid bin (16) via a bearing, a gear (193) being sleeved on the top end of the heat-conducting shaft (191), and a row of heat-conducting fins (192) being sleeved on the outside of the heat-conducting shaft (191) and located inside the liquid bin (16).

7. The charging gun liquid cooling device according to claim 6, characterized in that: Handle frames (15) are installed on both sides of the top of the cabin (11).

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