Liquid-cooled charging gun with liquid leakage monitoring function

Abstract

The utility model discloses a liquid cooling charging gun with liquid leakage monitoring function, including the charging head, the inside of charging head is hollowly arranged, still include: liquid cooling mechanism, liquid cooling mechanism fixedly connected in the inner wall of charging head, liquid cooling mechanism includes the placement groove, the top fixedly connected with the apron of placement groove, is equipped with the liquid cooling pipe in the placement groove, first liquid leakage sensor, first liquid leakage sensor sets up between liquid cooling mechanism, through setting first liquid leakage sensor and second liquid leakage sensor, when the leakage of liquid cooling mechanism can only flow out from the crack of apron and placement groove junction, first liquid leakage sensor and second liquid leakage sensor can block up liquid cooling mechanism at this moment when detecting liquid leakage, can carry out the leak -stop of liquid cooling system leak -liquid phenomenon, and the liquid of leakage is easy to cause damage to the inside of charging gun, and easy to take place the leakage phenomenon, and the safety is strong.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, and in particular to a liquid-cooled charging gun with liquid leakage monitoring function. Background Technology

[0002] With the rapid development of new energy electric vehicles, more and more car owners are choosing to purchase them, and their intelligence and driving range have also seen significant progress. As supporting charging infrastructure for electric vehicles, the power of charging piles is also gradually increasing, with single-gun charging voltage gradually expanding to 1000V and current to 250A. Since charging voltage is closely related to the voltage withstand capability of the vehicle's battery pack, significant breakthroughs cannot be achieved in the short term. Therefore, various development paths have been proposed for charging current, including pantograph charging, dual-gun charging, and supercharging. Among these, supercharging is gradually becoming the main development path for next-generation high-power charging, with its charging voltage and current expanding to 1500V and 600A respectively, and a maximum charging power reaching 900kW. Considering ease of use, increasing charging power cannot be achieved simply by increasing cable diameter; therefore, liquid-cooled charging guns have emerged, solving heat dissipation while also reducing diameter to improve usability.

[0003] A search revealed that Chinese Patent Publication No. CN219427951U discloses a liquid-cooled charging gun with liquid leakage monitoring function. The gun includes a charging gun body and a charging cable for connecting to a charging pile. The gun head of the charging gun body is connected to the charging cable via multiple liquid-cooled terminals. A liquid leakage monitoring mechanism is disposed within the charging gun body and arranged around the multiple liquid-cooled terminals. This utility model, through the liquid leakage monitoring mechanism, monitors the liquid leakage status of multiple liquid-cooled terminals in real time, achieving real-time monitoring of minute liquid leaks inside the liquid-cooled charging gun. This has the beneficial effects of enhancing reliability, improving monitoring effect, and increasing safety.

[0004] A search revealed that Chinese Patent Publication No. CN113370814A belongs to the field of charging guns, disclosing a liquid-cooled charging gun system and a charging control method based thereon. The system includes a cable, a heat exchange main pipe, a gun head, and a controller. One end of the cable connects to a charging module, and the other end connects to the gun head. A heat exchange branch pipe is installed inside the cable and connected to the heat exchange main pipe. A radiator, a pressure pump, and a pressure sensor are installed on the heat exchange main pipe. Both the pressure pump and the pressure sensor are connected to one end of the controller, and the other end of the controller connects to the charging module. The controller receives the heat exchange fluid pressure. When the heat exchange fluid pressure is lower than a preset pressure alarm threshold, it generates a first pressure pump control signal and sends it to the pressure pump. It also receives the current operating power of the pressure pump. When the heat exchange fluid pressure is lower than the preset pressure alarm threshold, and the current operating power of the pressure pump is the same as the maximum operating power, it generates a first charging module control signal and sends it to the charging module. This ensures charging efficiency while guaranteeing the safe and stable operation of the liquid-cooled charging gun.

[0005] However, while existing technologies can detect leaks, they cannot simultaneously plug leaks in the liquid cooling system. Leaked liquid can easily damage the inside of the charging gun and cause electrical leakage, resulting in poor safety.

[0006] To address these issues, we propose a liquid-cooled charging gun with liquid leakage detection capabilities. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a liquid-cooled charging gun with liquid leakage monitoring function.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A liquid-cooled charging gun with liquid leak detection function includes a charging head, the charging head being hollow inside, and further includes: A liquid cooling mechanism is fixedly connected to the inner wall of the charging head. The liquid cooling mechanism includes a placement groove, a cover plate is fixedly connected to the top of the placement groove, and a liquid cooling pipe is provided inside the placement groove. A first liquid leak sensor is disposed between the liquid cooling mechanisms. The top surface of the first liquid leak sensor is flush with the top surface of the liquid cooling mechanism, and both ends of the first liquid leak sensor are in contact with the liquid cooling mechanism. The second liquid leakage sensor is located at the opening of the charging head, with one side of the second liquid leakage sensor in contact with the liquid cooling mechanism, and the top of the second liquid leakage sensor and the liquid cooling mechanism are flush.

[0009] More preferably, a connecting pipe is fixedly connected to one side of the charging head, and the connecting pipe is used to connect components such as external wires and external water pipes.

[0010] More preferably, the liquid cooling mechanism, the placement tank, the cover plate, and the liquid cooling pipe are all annular in shape, and the spacing between the liquid cooling mechanism, the placement tank, the cover plate, and the liquid cooling pipe is consistent.

[0011] More preferably, both the first liquid leak sensor and the second liquid leak sensor are in the shape of a ring, and the spacing between the first liquid leak sensors is consistent.

[0012] More preferably, both the first liquid leak sensor and the second liquid leak sensor are configured as any one of a capacitive liquid leak sensor, a resistive liquid leak sensor, and a light-reflective liquid leak sensor.

[0013] More preferably, a connector is fixedly connected inside the charging head, and the connector is located inside the liquid cooling mechanism, the first liquid leak sensor, and the second liquid leak sensor.

[0014] More preferably, the top end of the connecting tube is provided with a fixing platform, the fixing platform is in the shape of a cuboid, and one end of the fixing platform is fixedly connected to the charging head.

[0015] More preferably, a handle is fixedly connected to the middle position of the top of the fixed platform, and the top surface of the handle is higher than the top surface of the charging head.

[0016] More preferably, a first processor is provided on one side of the handle, and a first alarm light is fixedly connected to the top of the first processor. A second processor is provided on the side of the handle opposite to the first processor, and a second alarm light is fixedly connected to the top of the second processor.

[0017] More preferably, a rubber ring is provided on the side of the second liquid leakage sensor facing the opening of the charging head, and the rubber ring is fixed to the second liquid leakage sensor by adhesive.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a first liquid leak sensor and a second liquid leak sensor, when the liquid cooling mechanism leaks, the coolant can only flow out from the gap at the connection between the cover plate and the placement tank. At this time, the first liquid leak sensor and the second liquid leak sensor can block the liquid cooling mechanism while detecting the liquid leak. The leak can be plugged at the same time as the liquid cooling system leaks. The leaked liquid is likely to damage the inside of the charging gun and is prone to leakage, so the safety is strong. Attached Figure Description

[0019] Figure 1This is a front view of a liquid-cooled charging gun with liquid leakage monitoring function proposed in this utility model. Figure 2 for Figure 1 Schematic diagram of the overall structure of the liquid cooling mechanism; Figure 3 for Figure 2 Schematic diagram of the internal structure of the liquid cooling mechanism; Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Charging head; 2. Connecting pipe; 3. Fixing platform; 4. Handle; 5. First processor; 6. First alarm light; 7. Second processor; 8. Second alarm light; 9. Connector; 10. Liquid cooling mechanism; 11. First liquid leak sensor; 12. Second liquid leak sensor; 13. Rubber ring; 14. Placement slot; 15. Cover plate; 16. Liquid cooling pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] refer to Figure 1 A liquid-cooled charging gun with liquid leakage detection function includes a charging head 1 for charging external components. The charging head 1 is hollow, so that a connector 9 and a liquid cooling mechanism 10 can be set inside the charging head 1 to realize the charging function and the liquid cooling function.

[0023] refer to Figure 2 and Figure 3 The liquid cooling mechanism 10 is fixedly connected to the inner wall of the charging head 1. The liquid cooling mechanism 10 is used to perform liquid cooling heat dissipation treatment on the charging head 1. The liquid cooling mechanism 10 includes a placement groove 14 for placing the liquid cooling pipe 16. A cover plate 15 is fixedly connected to the top of the placement groove 14. The cover plate 15 can seal the placement groove 14 and prevent the coolant from flowing out of the placement groove 14 when the liquid cooling pipe 16 leaks. The liquid cooling pipe 16 is provided inside the placement groove 14. The liquid cooling pipe 16 achieves heat dissipation treatment on the charging head 1 through coolant circulation.

[0024] refer to Figure 1 and Figure 4The first liquid leakage sensor 11 is disposed between the liquid cooling mechanisms 10. The first liquid leakage sensor 11 is used to detect whether the liquid cooling mechanism 10 is leaking liquid. The top surface of the first liquid leakage sensor 11 is flush with the top surface of the liquid cooling mechanism 10. Both ends of the first liquid leakage sensor 11 are in contact with the liquid cooling mechanism 10, so that the two ends of the first liquid leakage sensor 11 can limit and fix the liquid cooling mechanism 10, and at the same time can block the gap at the connection between the cover plate 15 and the placement groove 14.

[0025] refer to Figure 1 and Figure 4 The second liquid leakage sensor 12 is located at the opening of the charging head 1. The second liquid leakage sensor 12 is used to monitor whether the liquid cooling mechanism 10 at the opening of the charging head 1 leaks liquid. One side of the second liquid leakage sensor 12 is in contact with the liquid cooling mechanism 10, and the top of the second liquid cooling sensor and the liquid cooling mechanism 10 are flush. Thus, the second liquid leakage sensor 12 can limit and fix the liquid cooling mechanism 10, and at the same time, it can block the gap at the connection between the cover plate 15 and the placement groove 14.

[0026] refer to Figures 1-4 By setting a first liquid leak sensor 11 and a second liquid leak sensor 12, when the liquid cooling mechanism 10 leaks, the coolant can only flow out from the gap at the connection between the cover plate 15 and the placement groove 14. At this time, the first liquid leak sensor 11 and the second liquid leak sensor 12 can block the liquid cooling mechanism 10 while detecting the liquid leak. This allows for simultaneous plugging of the leak when the liquid cooling system leaks. The leaked liquid is less likely to damage the inside of the charging gun and may cause electrical leakage, thus ensuring strong safety. refer to Figure 1 A connecting pipe 2 is fixedly connected to one side of the charging head 1. The connecting pipe 2 is used to connect external wires and external water supply pipes and other components. At the same time, the connecting pipe 2 has a separate wire connected to the external wires to supply power to the charging head 1 and the first processor 5 and other components. The connecting pipe 2 also has a separate circulating water pipe to connect the external water supply pipe and the liquid cooling pipe 16 to realize the circulation function of the coolant. The individual wires and pipes in the connecting pipe 2 can be waterproofed by filling them with waterproof material.

[0027] refer to Figures 1-4 The liquid cooling mechanism 10, the placement groove 14, the cover plate 15 and the liquid cooling pipe 16 are all in the shape of a ring, so that they can fit more closely to the inner wall of the charging head 1 and are not easily deformed during long-term use. The spacing between the liquid cooling mechanism 10, the placement groove 14, the cover plate 15 and the liquid cooling pipe 16 is consistent, so that the liquid cooling heat dissipation inside the charging head 1 can be uniform and effective.

[0028] refer to Figure 1 and Figure 4The first liquid leakage sensor 11 and the second liquid leakage sensor 12 are both ring-shaped, which can fit more closely to the inner wall of the charging head 1 and are not easily deformed during long-term use. The spacing between the first liquid leakage sensors 11 is consistent, which can more completely monitor the liquid cooling mechanism 10 for leakage and transmit the leakage signal to the first processor 5 and the second processor 7 in a timely manner.

[0029] refer to Figure 1 and Figure 4 Both the first liquid leak sensor 11 and the second liquid leak sensor 12 are configured as any one of capacitive liquid leak sensors, resistive liquid leak sensors, or light-reflective liquid leak sensors. The principles of liquid leak sensors are mainly electrical and optical. Electrical principles detect leaks by observing changes in the conductivity of the liquid, commonly using changes in resistance or capacitance. When liquid leaks, it causes a change in resistance or capacitance, generating a signal that helps determine the location and extent of the leak. Optical principles detect the presence of liquid by observing changes in the reflection or refraction of light. Liquid leak sensors are widely used in medical equipment, industrial production, and other fields to ensure safety and prevent environmental pollution.

[0030] refer to Figure 1 The charging head 1 has a connector 9 fixedly connected inside. The connector 9 is used to insert into an external new energy vehicle or other component that needs to be charged for power output. The connector 9 is located inside the liquid cooling mechanism 10, the first liquid leakage sensor 11, and the second liquid leakage sensor 12, so that the liquid cooling mechanism 10 can effectively dissipate heat and the first liquid leakage sensor 11 and the second liquid leakage sensor 12 can effectively monitor leakage.

[0031] refer to Figure 1 The top of the connecting tube 2 is provided with a fixing platform 3, which is used to fix components such as the handle 4. The fixing platform 3 is in the shape of a cuboid, which has good stability. One end of the fixing platform 3 is fixedly connected to the charging head 1, so that the fixing platform 3 is not easy to detach from the charging head 1.

[0032] refer to Figure 1 A handle 4 is fixedly connected to the middle of the top of the fixed platform 3. The user uses the charging head 1 by holding the handle 4. The top surface of the handle 4 is higher than the top surface of the charging head 1, so as to limit the charging head 1 when it is inserted for charging, and prevent the charging head 1 from being inserted too deeply when it is inserted into external components.

[0033] refer to Figure 1The handle 4 is equipped with a first processor 5 and a second processor 7 on both sides. The processors are used to process the leakage signals fed back by the first liquid leakage sensor 11 and the second liquid leakage sensor. The first liquid leakage sensor 11 and the second liquid leakage sensor will quickly feed back the liquid leakage signals to the first processor 5 and the second processor 7 respectively, and immediately execute operations such as stopping the power supply and causing the first alarm light 6 and the second alarm light 8 to sound an alarm in sequence, thereby avoiding safety accidents and having the beneficial effects of enhancing reliability, improving monitoring effect and improving safety.

[0034] refer to Figure 1 and Figure 4 The second liquid leakage sensor 12 has a rubber ring 13 on the side facing the opening of the charging head 1. When the charging head 1 is quickly inserted into the external component, the rubber ring 13 can be used for buffering to prevent squeezing and damage to the internal component of the charging head 1. The rubber ring 13 is fixed to the second liquid leakage sensor 12 by adhesive, so the installation of the rubber ring 13 is relatively simple. In addition, the rubber ring 13 should be made of insulating rubber to prevent leakage.

[0035] Furthermore, when the terms "first," "second," "third," etc., are used in this application specification to describe various features, these terms are only used to distinguish these features and should not be construed as indicating or implying the correlation or relative importance between features or implicitly indicating the number of features indicated.

[0036] In addition, this application specification describes exemplary embodiments by referring to idealized exemplary cross-sectional views and / or plan views and / or perspective views. Therefore, differences from the illustrated shapes are foreseeable due to factors such as manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but should include deviations in shape caused, for example, by manufacturing processes. Thus, the regions shown in the figures are substantially schematic, and their shapes are not intended to illustrate the actual shapes of the regions of the device, nor to limit the scope of the exemplary embodiments.

Claims

1. A liquid-cooled charging gun with a liquid leakage monitoring function, comprising a charging head (1), the inside of the charging head (1) is hollow, characterized in that, Also includes: Liquid cooling mechanism (10) is fixedly connected to the inner wall of the charging head (1). The liquid cooling mechanism (10) includes a placement groove (14). A cover plate (15) is fixedly connected to the top of the placement groove (14). A liquid cooling pipe (16) is provided inside the placement groove (14). The first liquid leak sensor (11) is disposed between the liquid cooling mechanisms (10), the top surface of the first liquid leak sensor (11) is flush with the top surface of the liquid cooling mechanism (10), and both ends of the first liquid leak sensor (11) are in contact with the liquid cooling mechanism (10). The second liquid leakage sensor (12) is located at the opening of the charging head (1). One side of the second liquid leakage sensor (12) is in contact with the liquid cooling mechanism (10). The top of the second liquid leakage sensor (12) and the liquid cooling mechanism (10) are flush.

2. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, A connecting pipe (2) is fixedly connected to one side of the charging head (1), and the connecting pipe (2) is used to connect the external wire and the external water supply pipe assembly.

3. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, The liquid cooling mechanism (10), the placement groove (14), the cover plate (15) and the liquid cooling pipe (16) are all in the shape of a ring, and the spacing between the liquid cooling mechanism (10), the placement groove (14), the cover plate (15) and the liquid cooling pipe (16) is consistent.

4. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, Both the first liquid leak sensor (11) and the second liquid leak sensor (12) are in the shape of a ring, and the spacing between the first liquid leak sensors (11) is consistent.

5. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, The first liquid leak sensor (11) and the second liquid leak sensor (12) are both configured as any one of capacitive liquid leak sensor, resistive liquid leak sensor, and optical reflective liquid leak sensor.

6. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, The charging head (1) is fixedly connected to a connector (9), which is located inside the liquid cooling mechanism (10), the first liquid leakage sensor (11), and the second liquid leakage sensor (12).

7. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 2, characterized in that, The top of the connecting pipe (2) is provided with a fixed platform (3), which is rectangular in shape, and one end of the fixed platform (3) is fixedly connected to the charging head (1).

8. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 7, characterized in that, A handle (4) is fixedly connected to the middle position of the top of the fixed platform (3), and the top surface of the handle (4) is higher than the top surface of the charging head (1).

9. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 8, characterized in that, A first processor (5) is provided on one side of the handle (4), and a first alarm light (6) is fixedly connected to the top of the first processor (5). A second processor (7) is provided on the side of the handle (4) opposite to the first processor (5), and a second alarm light (8) is fixedly connected to the top of the second processor (7).

10. The liquid-cooled charging gun with a liquid leakage monitoring function according to claim 1, characterized in that, The second liquid leak sensor (12) has a rubber ring (13) on the side facing the opening of the charging head (1), and the rubber ring (13) is fixed to the second liquid leak sensor (12) by adhesive.

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