Double-gun liquid cooling charging pile

Abstract

The utility model belongs to the technical field of charging piles, and discloses a double-gun liquid cooling charging pile, which comprises a charging pile main body, a gun line structure is arranged on the side edge of the charging pile main body, and the gun line structure comprises a first charging gun and a second charging gun; the charging pile body further comprises a liquid cooling system used for reducing the temperature of the first charging gun and the second charging gun, the liquid cooling system comprises a cold source, an acquisition plate and liquid pipes arranged in the first charging gun and the second charging gun, the cold source comprises a liquid outlet and a liquid return port, and the liquid pipes communicate with the liquid outlet and the liquid return port. The collecting plate collects the temperature of the liquid outlet and the temperature of the liquid return opening so as to control the liquid outlet rate of the liquid outlet. By arranging the liquid cooling system, the temperature of the first charging gun and the second charging gun in the charging process is effectively reduced, the problem that the charging efficiency is reduced due to overheating of the charging guns is avoided, the charging process can be stably carried out for a long time, and the liquid cooling system is particularly suitable for a high-power charging scene.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging piles and relates to a double-gun liquid-cooling charging pile. Background Art

[0002] With the rapid development of the electric vehicle market, the demand for charging stations is growing. During the charging process, the charging gun generates heat due to the current flowing through it. If this heat cannot be dissipated promptly and effectively, it will not only affect charging efficiency but may also damage the charging gun and related charging equipment, and even pose a safety hazard.

[0003] The demand for ultra-high-power charging is the current main trend, so liquid-cooled charging terminals have become the mainstream direction. However, the current liquid-cooled terminals are all equipped with a single gun. For some stations that require two liquid-cooled guns, it is necessary to purchase two liquid-cooled terminals. This will occupy the station's usable area and increase its own costs.

[0004] Based on this, the field urgently needs a dual-gun liquid-cooled charging pile to solve the above technical problems. Utility Model Content

[0005] In view of this, the purpose of the present invention is to solve the above problems and provide a dual-gun liquid-cooled charging pile.

[0006] The dual-gun liquid-cooled charging pile provided by the utility model comprises: a charging pile body, a gun line structure is installed on the side of the charging pile body, and the gun line structure includes a first charging gun and a second charging gun;

[0007] The charging pile body also includes a liquid cooling system for reducing the temperature of the first charging gun and the second charging gun. The liquid cooling system includes a cold source, a collection plate, and a liquid pipe arranged in the first charging gun and the second charging gun. The cold source includes a liquid outlet and a liquid return port. The liquid pipe connects the liquid outlet and the liquid return port. The collection plate collects the temperature of the liquid outlet and the liquid return port to control the liquid discharge rate of the liquid outlet.

[0008] As a further improvement of the present invention, the charging pile body further includes a charging module, and the charging module includes a first charging module and a second charging module arranged adjacent to each other on the left and right;

[0009] The first charging module is connected to the first charging gun, and the first charging module is used to provide current to the first charging gun;

[0010] The second charging module is connected to the second charging gun, and the second charging module is used to provide current to the second charging gun.

[0011] As a further improvement of the present invention, the first charging module includes a first charging control board, a first gun line adapter board, a first protocol converter, a first DC contactor, a second DC contactor, a first shunt and a first electric meter arranged above and below;

[0012] The first DC contactor is connected to the positive electrode of the first charging gun, and the first shunt is connected to the negative electrode of the first charging gun through the second DC contactor;

[0013] The first DC contactor and the second DC contactor are connected to the acquisition board through the first charging control board.

[0014] As a further improvement of the present invention, the second charging module includes a second charging control board, a second gun line adapter board, a second protocol converter, a third DC contactor, a fourth DC contactor, a second shunt and a second electric meter arranged above and below;

[0015] The third DC contactor is connected to the positive electrode of the second charging gun, and the second shunt is connected to the negative electrode of the second charging gun through the fourth DC contactor;

[0016] The third DC contactor and the fourth DC contactor are connected to the acquisition board through the second charging control board.

[0017] As a further improvement of the present invention, the cold source includes a heat dissipation pipe, a water tank and a pump connected in sequence, and the pump is connected to a controller, and the controller controls the liquid discharge rate of the pump;

[0018] The pump is connected to the liquid outlet, and a temperature detector is provided between the pump and the liquid outlet;

[0019] The heat dissipation pipe is connected to the liquid return port, and a temperature return detector is provided between the liquid return port and the heat dissipation pipe.

[0020] As a further improvement of the present invention, the cold source further includes a fan, an air outlet of the fan is arranged toward the heat dissipation duct, the fan is connected to the controller, and the controller controls the rotation speed of the fan.

[0021] As a further improvement of the present invention, the liquid outlet includes a first liquid outlet and a second liquid outlet, the liquid pipe includes a first liquid pipe and a second liquid pipe, and the liquid return port includes a first positive electrode liquid return port, a first negative electrode liquid return port, a second positive electrode liquid return port and a second negative electrode liquid return port;

[0022] The first liquid pipe comprises a first liquid inlet pipe and first positive and negative liquid outlet pipes connected to the first liquid inlet pipe, the first liquid inlet pipe being communicated with the first liquid outlet port, the first positive liquid outlet pipe being communicated with the first positive liquid return port, and the first negative liquid outlet pipe being communicated with the first negative liquid return port;

[0023] The second liquid pipe comprises a second liquid inlet pipe and second positive and negative liquid outlet pipes connected to the second liquid inlet pipe, the second liquid inlet pipe being communicated with the second liquid outlet port, the second positive liquid outlet pipe being communicated with the second positive liquid return port, and the second negative liquid outlet pipe being communicated with the second negative liquid return port.

[0024] As a further improvement of the utility model, the temperature detector comprises a positive temperature detector and a negative temperature detector, the positive temperature detector is arranged between the first positive liquid return port, the second positive liquid return port and the heat dissipation pipeline, and the negative temperature detector is arranged between the first negative liquid return port, the second negative liquid return port and the heat dissipation pipeline.

[0025] As a further improvement of the utility model, a liquid level detector is arranged in the water tank, and the liquid level detector is used for detecting the liquid amount in the water tank.

[0026] As a further improvement of the utility model, a front tank door and a rear tank door are oppositely arranged on the front and rear sides of the charging pile body, a charging display lamp, a display screen, a charging gun support and a POS machine are arranged on the outside of the front tank door.

[0027] The charging display lamp, the display screen and the POS machine are connected with a direct current circuit breaker through a voltage conversion module.

[0028] The direct current circuit breaker is connected with the charging module, the cold source and the acquisition plate.

[0029] Compared with the prior art, the double-gun liquid cooling charging pile provided by the utility model effectively reduces the temperature of the first charging gun and the second charging gun during the charging process, compared with the traditional air-cooled charging pile, the high specific heat capacity of the liquid enables the cooling liquid to absorb more heat, thereby more efficiently taking away the heat generated by the charging gun, avoiding the problem of reduced charging efficiency caused by overheating of the charging gun, and ensuring that the charging process can be stably carried out for a long time, especially suitable for high-power charging scenes. By setting the acquisition plate to collect the temperature of the liquid outlet port and the liquid return port of the cold source, the liquid outlet rate is controlled, and accurate control of the liquid cooling system is realized. This dynamic adjustment mechanism according to temperature feedback can flexibly adjust the flow of the cooling liquid according to actual heat dissipation requirements, ensure that the charging gun is always in a suitable working temperature range, and avoid waste of the cooling liquid and potential damage to the charging gun caused by improper temperature control. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application, not all the embodiments. For those skilled in the art, other drawings obtained according to these drawings without creative labor fall within the scope of the present application.

[0031] Figure 1 is a perspective view of a double-gun liquid-cooled charging pile provided by the embodiment of the present application;

[0032] Figure 2 is a system principle diagram of a double-gun liquid-cooled charging pile provided by the embodiment of the present application;

[0033] Figure 3 is a rear view of a charging pile main body provided by the embodiment of the present application;

[0034] Figure 4 is a perspective view of a charging pile main body provided by the embodiment of the present application;

[0035] Figure 5 is a system principle diagram of a liquid cooling system provided by the embodiment of the present application;

[0036] Figure 6 is a front view of a charging pile main body provided by the embodiment of the present application.

[0037] Among them, 10 is a charging pile main body;

[0038] 11 is a gun wire structure, 111 is a first charging gun, and 112 is a second charging gun;

[0039] 12 is a liquid cooling system, 121 is a cold source, 1211 is a liquid outlet, 12111 is a first liquid outlet, 12112 is a second liquid outlet, 1212 is a return liquid outlet, 12121 is a first positive electrode return liquid outlet, 12122 is a first negative electrode return liquid outlet, 12123 is a second positive electrode return liquid outlet, 12124 is a second negative electrode return liquid outlet, 1213 is a heat dissipation pipe, 1214 is a water tank, 12141 is a liquid level detector, 1215 is a pump, 1216 is a controller, 1217 is a temperature detector Detector, 1218 is a temperature return detector, 12181 is a positive electrode temperature return detector, 12182 is a negative electrode temperature return detector, 1219 is a fan, 122 is a collection board, 123 is a liquid pipe, 1231 is a first liquid pipe, 12311 is a first liquid inlet pipe, 12312 is a first positive electrode liquid outlet pipe, 12313 is a first negative electrode liquid outlet pipe, 1232 is a second liquid pipe, 12321 is a second liquid inlet pipe, 12322 is a second positive electrode liquid outlet pipe, and 12323 is a second negative electrode liquid outlet pipe;

[0040] 13 is a charging module, 131 is a first charging module, 1311 is a first charging control board, 1312 is a first gun line adapter board, 1313 is a first protocol converter, 1314 is a first DC contactor, 1315 is a second DC contactor, 1316 is a first shunt, 1317 is a first electric meter, 132 is a second charging module, 1321 is a second charging control board, 1322 is a second gun line adapter board, 1323 is a second protocol converter, 1324 is a third DC contactor, 1325 is a fourth DC contactor, 1326 is a second shunt, and 1327 is a second electric meter;

[0041] 141 is the front door, 1411 is the charging indicator light, 1412 is the display screen, 1413 is the charging gun bracket, 1415 is the POS machine, 1416 is the voltage conversion module, and 1417 is the DC circuit breaker. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] In order to make the description of the contents of this disclosure more detailed and complete, the following is an illustrative description of the implementation methods and specific examples of the present invention; however, this is not the only form of implementing or using the specific embodiments of the present invention. The implementation methods cover the features of multiple specific embodiments and the method steps and their sequence for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and step sequences. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0046] In the description of the present invention, the terms "front", "rear", "top", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0047] Please refer to Figures 1-6 One embodiment of the utility model provides a dual-gun liquid-cooled charging pile to solve the problem that existing liquid-cooled terminals are all equipped with a single gun. For some stations that need two liquid-cooled guns, it is necessary to purchase two liquid-cooled terminals, which will occupy the usable area of ​​the station and increase its own costs.

[0048] For details, please refer to Figure 1 A three-dimensional diagram of a dual-gun liquid-cooled charging pile provided by an embodiment of the utility model, Figure 1The utility model provides a kind of system principle diagram of double-gun liquid cooling charging pile provided for the embodiment of the utility model, and the utility model provides a kind of double-gun liquid cooling charging pile, comprising: charging pile main body 10, the gun line structure 11 is installed in the side of charging pile main body 10, the gun line structure 11 includes first charging gun 111 and second charging gun 112;The charging pile main body 10 further includes liquid cooling system 12 for reducing the temperature of the first charging gun 111 and the second charging gun 112, please refer to Figure 2-Figure 3 The liquid cooling system 12 includes cold source 121, collection plate 122 and liquid pipe 123 arranged in the first charging gun 111 and the second charging gun 112, the cold source 121 includes liquid outlet 1211 and liquid return port 1212, the liquid pipe 123 is communicated with the liquid outlet 1211 and the liquid return port 1212, the collection plate 122 collects the temperature of the liquid outlet 1211 and the liquid return port 1212 to control the liquid outlet rate of the liquid outlet 1211.By setting the liquid cooling system 12, the temperature of the first charging gun 111 and the second charging gun 112 in charging process is effectively reduced, compared with traditional air-cooled charging pile, the high specific heat capacity characteristics of liquid make cooling liquid can absorb more heat, so that the heat generated by charging gun is removed more efficiently, avoid the problem of charging efficiency reduction caused by charging gun overheating, ensure that charging process can be carried out stably for a long time, especially suitable for high-power charging scene.By setting collection plate 122 to collect the temperature of the liquid outlet 1211 and the liquid return port 1212 of cold source 121 to control the liquid outlet rate, the precise control of liquid cooling system 12 is realized, and this dynamic adjustment mechanism according to temperature feedback can flexibly adjust the flow of cooling liquid according to actual heat dissipation demand, ensure that charging gun is always in suitable working temperature range, avoid the waste of cooling liquid and potential damage to charging gun caused by improper temperature control.

[0049] As a further improvement of the utility model, please refer to Figure 3The charging pile body 10 also includes a charging module 13, which includes a first charging module 131 and a second charging module 132 arranged adjacent to each other on the left and right. The first charging module 131 is connected to the first charging gun 111 and is used to provide current to the first charging gun 111. The second charging module 132 is connected to the second charging gun 112 and is used to provide current to the second charging gun 112. By setting the charging module 13 into the first charging module 131 and the second charging module 132 adjacent to each other on the left and right, the first charging gun 111 and the second charging gun 112 are independently provided with current. The components inside each charging module 13 are compactly distributed and work together, ensuring that the current provided to each charging gun is accurate and stable, improving the reliability and safety of charging, and reducing mutual interference between the two charging guns. Even if a problem occurs in one charging gun or charging module 13, it will not affect the normal charging of the other.

[0050] As a further improvement of the present invention, the first charging module 131 includes a first charging control board 1311, a first gun line adapter board 1312, a first protocol converter 1313, a first DC contactor 1314, a second DC contactor 1315, a first shunt 1316 and a first electric meter 1317 arranged above and below; the first DC contactor 1314 is connected to the positive pole of the first charging gun 111, and the first shunt 1316 is connected to the negative pole of the first charging gun 111 through the second DC contactor 1315; the first DC contactor 1314 and the second DC contactor 1315 are connected to the acquisition board 122 through the first charging control board 1311. By adopting a top-to-bottom arrangement, the first charging module 131, comprising a first charging control board 1311, a first gun line adapter board 1312, a first protocol converter 1313, a first DC contactor 1314, a second DC contactor 1315, a first shunt 1316, and a first electric meter 1317, achieves vertical separation of high and low voltages. This layered layout spatially organizes the components, facilitating circuit connection and signal transmission, while also facilitating heat dissipation and maintenance. The first DC contactor 1314 connects to the positive terminal of the first charging gun 111, while the first shunt 1316 connects to the negative terminal of the first charging gun 111 via the second DC contactor 1315. This establishes a charging current transmission path, allowing current to flow from the charging pile through the first DC contactor 1314, first shunt 1316, and second DC contactor 1315 to the first charging gun 111, thus enabling the electric vehicle to be charged. The first DC contactor 1314 and the second DC contactor 1315 are connected to the data acquisition board 122 via the first charging control board 1311, enabling the data acquisition board 122 to obtain information related to the negative terminal of the first charging gun 111. By detecting and controlling the status or related signals of the first DC contactor 1314 and the second DC contactor 1315, the charging current, voltage, and other parameters are monitored, thereby achieving control and management of the entire charging process. By integrating multiple functional components into the first charging module 131, multiple functions are coordinated during the charging process. The first charging control board 1311 controls and coordinates the entire first charging module 131. The first protocol converter 1313 ensures that the communication protocols between the charging station and the electric vehicle match. The first DC contactor 1314 and the second DC contactor 1315 control the on-off of the charging circuit. The first shunt 1316 measures the charging current, and the first ammeter 1317 records information such as the power level. These components work together to ensure a more stable and accurate charging process. The layered structure makes each component of the first charging module 131 physically relatively independent and easy to identify. When a fault occurs, maintenance personnel can quickly locate the component level where the problem occurs.If an abnormal charging current problem occurs, the first shunt 1316 and the related DC contactor can be checked first; if it is a communication problem, the first protocol converter 1313 can be checked in particular, which greatly reduces maintenance costs and troubleshooting time.

[0051] As a further improvement of the present invention, the second charging module 132 includes a second charging control board 1321, a second gun line adapter board 1322, a second protocol converter 1323, a third DC contactor 1324, a fourth DC contactor 1325, a second shunt 1326 and a second electric meter 1327 arranged above and below; the third DC contactor 1324 is connected to the positive pole of the second charging gun 112, and the second shunt 1326 is connected to the negative pole of the second charging gun 112 through the fourth DC contactor 1325; the third DC contactor 1324 and the fourth DC contactor 1325 are connected to the acquisition board 122 through the second charging control board 1321. By adopting a top-to-bottom arrangement, the second charging module 132, comprising a second charging control board 1321, a second gun line adapter board 1322, a second protocol converter 1323, a third DC contactor 1324, a fourth DC contactor 1325, a second shunt 1326, and a second electric meter 1327, achieves vertical separation of high and low voltages. This layered layout spatially organizes the components, facilitating circuit connection and signal transmission, while also facilitating heat dissipation and maintenance. The second DC contactor 1315 connects to the positive terminal of the first charging gun 111, while the second shunt 1326 connects to the negative terminal of the first charging gun 111 via the third DC contactor 1324. This establishes a charging current transmission path, allowing current to flow from the charging station through the second DC contactor 1315, the second shunt 1326, and the third DC contactor 1324 to the first charging gun 111, thus enabling the electric vehicle to be charged. The third and fourth DC contactors 1324, 1325 are connected to the data acquisition board 122 via the second charging control board 1321, enabling the acquisition board 122 to obtain information related to the positive terminal of the second charging gun 112. By detecting and controlling the status or related signals of the third and fourth DC contactors 1324, 1325, the data acquisition board 122 monitors parameters such as current and voltage during the charging process, thereby achieving control and management of the entire charging process. By integrating multiple functional components into the second charging module 132, the coordination of multiple functions during the charging process is achieved. The second charging control board 1321 controls and coordinates the entire second charging module 132. The second protocol converter 1323 ensures that the communication protocols between the charging station and the electric vehicle match. The third and fourth DC contactors 1324, 1325 control the on-off of the charging circuit. The first shunt 1316 measures the charging current, and the first ammeter 1317 records information such as the power level. These components work together to ensure a more stable and accurate charging process. The layered structure makes each component of the second charging module 132 physically independent and easy to identify. When a fault occurs, maintenance personnel can quickly locate the component level where the problem occurs.If an abnormal charging current problem occurs, the second shunt 1326 and the related DC contactor can be checked first; if it is a communication problem, the second protocol converter 1323 can be checked in particular, which greatly reduces maintenance costs and troubleshooting time.

[0052] As a further improvement of the present invention, please refer to Figure 4-Figure 5The cooling source 121 includes a heat dissipation pipe 1213, a water tank 1214, and a pump 1215, which are sequentially connected. The pump 1215 is connected to a controller 1216, which controls the liquid discharge rate of the pump 1215. The pump 1215 is connected to the liquid outlet 1211, and a temperature detector 1217 is provided between the pump 1215 and the liquid outlet 1211. The cooling pipe 1213 is connected to the liquid return port 1212, and a temperature return detector 1218 is provided between the liquid return port 1212 and the cooling pipe 1213. The cooling source 121 is configured such that the cooling pipe 1213, the water tank 1214, and the pump 1215 are sequentially connected to form a closed coolant circulation system. The water tank 1214 serves as a coolant storage container, providing sufficient coolant for the entire system. Pump 1215, acting as the power source for coolant circulation, operates under the control of controller 1216, pumping coolant from tank 1214 and delivering it to liquid pipe 123 through liquid outlet 1211. After absorbing heat from the charging gun, the coolant flows back through liquid return port 1212 to heat dissipation pipe 1213, completing a complete cycle. An outlet temperature detector 1217 is positioned between pump 1215 and liquid outlet 1211, and a return temperature detector 1218 is positioned between return port 1212 and heat dissipation pipe 1213. The outlet temperature detector 1217 measures the real-time temperature of the coolant being delivered to the charging gun liquid pipe 123, while the return temperature detector 1218 measures the temperature of the coolant returning from the charging gun. This temperature information is fed back to controller 1216, which adjusts the pump 1215's discharge rate based on this feedback, achieving dynamic regulation of the coolant flow rate. When the charging gun's temperature rises, causing the return liquid temperature to rise, controller 1216 can increase the discharge rate of pump 1215, allowing more coolant to flow through the charging gun and remove more heat. This effectively regulates the gun's temperature, ensuring it remains within the appropriate operating temperature range and improving charging efficiency and safety. This temperature-feedback-based control mechanism precisely controls the coolant flow rate. Compared to traditional fixed-flow liquid cooling systems 12, it avoids energy waste caused by excessive coolant flow and ineffective heat dissipation caused by insufficient coolant flow, making coolant usage more efficient and extending the device's service life. Furthermore, the temperature data measured by outlet temperature detector 1217 and return temperature detector 1218 is not only used to control the discharge rate of pump 1215 but also serves as a basis for fault warnings. Excessively high outlet temperatures or an abnormal temperature difference between return temperature and outlet temperature may indicate a blockage in the coolant circulation system, a pump 1215 failure, or other issues. Based on these abnormal conditions, the system can promptly issue an alarm or take appropriate protective measures, such as stopping charging operations, to prevent further damage to the device.

[0053] As a further improvement to the present invention, the cooling source 121 also includes a fan 1219, with its air outlet facing the heat dissipation duct 1213. The fan 1219 is connected to a controller 1216, which controls the rotational speed of the fan 1219. By aligning the air outlet of the fan 1219 in the cooling source 121 with the heat dissipation duct 1213, the fan 1219 can directly direct airflow toward the heat dissipation duct 1213 when it rotates. Heat-carrying coolant, returning from the charging gun, circulates within the heat dissipation duct 1213. The airflow from the fan 1219 accelerates the flow of air on the surface of the heat dissipation duct 1213, allowing the heat from the coolant within the heat dissipation duct 1213 to be dissipated more quickly into the surrounding environment, thereby enhancing the heat dissipation effect. The fan 1219 is connected to a controller 1216, which can control the rotational speed of the fan 1219 based on relevant monitoring data or set parameters. Optionally, the controller can dynamically adjust the cooling system based on the temperature of the heat dissipation pipe 1213, the temperature of the coolant delivered to the charging gun liquid pipe 123 as measured in real time by the outlet temperature detector 1217, and the temperature of the coolant returning from the charging gun as measured by the regenerative temperature detector 1218. When the temperature of the heat dissipation pipe 1213 is high or the regenerative temperature detector 1218 indicates a high level of heat requiring rapid heat dissipation, the controller 1216 can increase the speed of the fan 1219 to increase air flow and remove more heat. Conversely, when the heat dissipation demand is low, the speed of the fan 1219 can be appropriately reduced to conserve energy and maintain proper heat dissipation. The presence of the fan 1219 significantly enhances the heat dissipation efficiency of the heat dissipation pipe 1213. By actively promoting air flow, the heat exchange rate between the heat dissipation pipe 1213 and the external environment is accelerated, allowing the coolant to dissipate heat more quickly and cool down the charging gun more effectively. This is particularly important in high-power charging scenarios where the charging gun generates significant heat. It ensures that the charging gun remains within a suitable operating temperature range, improving charging stability and safety. Since the controller 1216 can dynamically control the rotation speed of the fan 1219 according to different heat dissipation requirements, precise regulation of the heat dissipation process is achieved. This flexible adjustment method can adjust the speed of the fan 1219 in a timely manner according to the actual charging situation, ambient temperature and other factors, so that the heat dissipation effect is always maintained at a relatively ideal state, which not only avoids the problem of overheating of the charging gun due to insufficient heat dissipation, but also prevents energy waste caused by excessive heat dissipation, and optimizes the heat dissipation performance of the entire liquid cooling system 12. Effective heat dissipation can reduce the loss and potential damage risks caused by overheating of the charging gun and related equipment of the liquid cooling system 12. By enhancing heat dissipation through the fan 1219 and allowing the equipment to operate at normal operating temperature, the service life of equipment such as the charging gun, heat dissipation pipe 1213, and pump 1215 can be significantly extended, and the frequency of equipment maintenance and replacement can be reduced, thereby saving operating costs.

[0054] As a further improvement of the present invention, the liquid outlet 1211 includes a first liquid outlet 12111 and a second liquid outlet 12112, the liquid pipe 123 includes a first liquid pipe 1231 and a second liquid pipe 1232, the return liquid port 1212 includes a first positive electrode return liquid port 12121, a first negative electrode return liquid port 12122, a second positive electrode return liquid port 12123 and a second negative electrode return liquid port 12124; the first liquid pipe 1231 includes a first liquid inlet pipe 12311 and a first positive electrode liquid outlet pipe 12312 and a first negative electrode liquid outlet pipe 12313 connected to the first liquid inlet pipe 12311, the first liquid inlet pipe 12311 and the first liquid outlet 12121 are connected to the first liquid outlet 12121. 111 is connected, the first positive electrode liquid outlet pipe 12312 is connected to the first positive electrode liquid return port 12121, and the first negative electrode liquid outlet pipe 12313 is connected to the first negative electrode liquid return port 12122; the second liquid pipe 1232 includes a second liquid inlet pipe 12321 and a second positive electrode liquid outlet pipe 12322 and a second negative electrode liquid outlet pipe 12323 connected to the second liquid inlet pipe 12321, the second liquid inlet pipe 12321 is connected to the second liquid outlet 12112, the second positive electrode liquid outlet pipe 12322 is connected to the second positive electrode liquid return port 12123, and the second negative electrode liquid outlet pipe 12323 is connected to the second negative electrode liquid return port 12124. The liquid outlet 1211 is divided into a first liquid outlet 12111 and a second liquid outlet 12112, which are respectively connected to the corresponding first liquid pipe 1231 and second liquid pipe 1232. The first liquid inlet pipe 12311 of the first liquid pipe 1231 is connected to the first liquid outlet 12111, allowing coolant to flow out of the first liquid outlet 12111 and into the first liquid pipe 1231. Similarly, the second liquid inlet pipe 12321 of the second liquid pipe 1232 is connected to the second liquid outlet 12112, allowing coolant to be transported from the second liquid outlet 12112 to the second liquid pipe 1232. This dual liquid outlet 1211 and dual liquid pipe 123 design provides independent coolant circulation paths for the first and second charging guns 111, 112 in the dual-gun liquid-cooled charging pile, ensuring that each charging gun is effectively cooled. The first liquid pipe 1231 is further subdivided into a first liquid inlet pipe 12311, a first positive electrode liquid outlet pipe 12312, and a first negative electrode liquid outlet pipe 12313. The first positive electrode liquid outlet pipe 12312 is connected to the first positive electrode liquid return port 12121, and the first negative electrode liquid outlet pipe 12313 is connected to the first negative electrode liquid return port 12122. In this way, after the coolant flows through the first charging gun 111, it flows back from the liquid return ports 1212 corresponding to the positive and negative electrodes respectively.Similarly, the second liquid pipe 1232 includes a second liquid inlet pipe 12321, a second positive electrode liquid outlet pipe 12322, and a second negative electrode liquid outlet pipe 12323. These are connected to the second positive electrode liquid return port 12123 and the second negative electrode liquid return port 12124, respectively, allowing the coolant to return through the corresponding liquid return port 1212 after passing through the second charging gun 112. This sophisticated connection design achieves a complete coolant circulation path within the charging gun, namely, flowing out of the liquid outlet 1211, absorbing heat from the positive and negative electrodes of the charging gun, and then returning through the corresponding liquid return port 1212, ensuring that the coolant can effectively remove the heat generated by the charging gun during charging. Providing independent liquid outlets 1211, liquid pipes 123, and liquid return ports 1212 for each charging gun allows the first charging gun 111 and the second charging gun 112 to each have independent coolant circulation. This way, when two charging guns are operating simultaneously, even if one experiences an abnormality such as a coolant leak or blockage, the normal cooling of the other gun will not be affected, ensuring that each gun remains within the appropriate operating temperature range and improving the reliability and stability of the entire charging station. The sophisticated design of the liquid pipe 123 delivers coolant to both the positive and negative electrodes of the charging gun, enabling more comprehensive and efficient absorption of heat generated during the charging process. Because current flowing through both the positive and negative electrodes generates heat during charging, this targeted coolant delivery ensures that heat is promptly and fully absorbed and carried away by the coolant, effectively preventing the charging gun from overheating and improving charging efficiency. In practice, if the liquid cooling system 12 of a particular charging gun needs to be upgraded, replaced, or repaired, only the corresponding components, including the liquid outlet 1211, liquid pipe 123, and liquid return port 1212, need to be repaired. No major modifications to the entire liquid cooling system 12 are required, reducing the difficulty and cost of system maintenance and improving system maintainability.

[0055] As a further improvement of the present invention, the temperature return detector 1218 includes a positive electrode temperature return detector 12181 and a negative electrode temperature return detector 12182. The positive electrode temperature return detector 12181 is arranged between the first positive electrode liquid return port 12121, the second positive electrode liquid return port 12123 and the heat dissipation pipe 1213, and the negative electrode temperature return detector 12182 is arranged between the first negative electrode liquid return port 12122, the second negative electrode liquid return port 12124 and the heat dissipation pipe 1213. The temperature regeneration detector 1218 consists of a positive electrode temperature regeneration detector 12181 and a negative electrode temperature regeneration detector 12182. The positive electrode temperature regeneration detector 12181 is located in the connection path between the first and second positive electrode liquid return ports 12121 and 12123 and the heat dissipation pipe 1213. It specifically monitors the temperature of the coolant returning from the positive electrodes of the first and second charging guns 111 and 112 before entering the heat dissipation pipe 1213. Similarly, the negative electrode temperature regeneration detector 12182 is located between the first and second negative electrode liquid return ports 12122 and 12124 and the heat dissipation pipe 1213. It monitors the temperature of the coolant returning from the negative electrodes of the first and second charging guns 111 and 112 before entering the heat dissipation pipe 1213. During charging, the coolant absorbs heat as it flows through the positive and negative electrodes of the charging guns and then flows back through their corresponding liquid return ports 1212. Before the coolant returns to the heat dissipation pipe 1213 for a heat dissipation cycle, the positive and negative electrode temperature return detectors 12181 and 12182 respectively conduct heat conduction with the passing coolant and convert the temperature signals into electrical signals for transmission to the controller 1216, allowing the controller 1216 to subsequently perform corresponding operations and analysis based on this temperature data. By placing temperature return detectors 1218 between the positive and negative electrode return ports 1212 and the heat dissipation pipe 1213, comprehensive monitoring of the coolant temperature returning from the positive and negative electrodes of the charging gun is achieved. Since heat is generated when current passes through both the positive and negative electrodes during charging, and differences in heat absorption and transfer may occur due to differences in the structure and heat dissipation conditions of the positive and negative electrodes, this separate monitoring method can more accurately determine the temperature changes of the coolant after it flows through different parts of the charging gun, providing more comprehensive data support for accurately evaluating the heat dissipation effect of the charging gun.

[0056] As a further improvement of the utility model, the water tank 1214 is internally provided with a liquid level detector 12141, and the liquid level detector 12141 is used for detecting the liquid quantity in the water tank 1214. By arranging the liquid level detector 12141, the liquid quantity in the water tank 1214 can be monitored in real time, and the remaining condition of the cooling liquid in the water tank 1214 can be timely informed to the system. The cooling liquid can continuously and stably provide the cooling effect for the first charging gun 111 and the second charging gun 112, and when the liquid level drops to a certain degree, the cooling liquid can be supplemented in advance to ensure that the charging gun does not overheat due to insufficient cooling liquid during the charging process, thereby affecting the charging efficiency and equipment safety. If the cooling liquid quantity in the water tank 1214 is too low, the pump 1215 may be idling, which can cause damage to the pump 1215 and also affect the normal operation of the entire liquid cooling system 12, so that the heat generated by the charging gun cannot be effectively removed, the charging gun overheats, and the charging gun and other related equipment can be further damaged. The existence of the liquid level detector 12141 can effectively prevent such a situation from occurring, and by timely discovering the low liquid level condition and triggering the corresponding alarm or cooling liquid supplement operation, the equipment is protected from potential damage caused by insufficient cooling liquid. For the maintenance personnel of the entire double-gun liquid cooling charging pile system, the accurate liquid level information provided by the liquid level detector 12141 enables them to more conveniently understand the state of the water tank 1214. During daily inspection or regular maintenance, it is not necessary to manually open the water tank 1214 to check the liquid level, and only by checking the data fed back by the liquid level detector 12141 can the liquid quantity condition in the water tank 1214 be clearly understood, so that the addition or replacement of the cooling liquid and other maintenance work can be timely arranged, and the efficiency and convenience of system maintenance are improved.

[0057] As a further improvement of the utility model, please see Figure 6The charging pile body 10 is provided with front and rear doors 141 and 141 (not shown) on opposite sides. The front door 141 is externally equipped with a charging indicator light 1411, a display screen 1412, a charging gun holder 1413, and a POS terminal 1415. These charging indicator light 1411, display screen 1412, and POS terminal 1415 are connected to a DC circuit breaker 1417 via a voltage conversion module 1416. The DC circuit breaker 1417 is connected to the charging module 13, the cold source 121, and the data acquisition board 122. By providing the front and rear doors 141 and 141 on the front and rear sides of the charging pile body 10, the dual-door design facilitates maintenance and inspection of the interior of the charging pile. The front door 141 is also equipped with functional components such as the charging indicator light 1411, display screen 1412, charging gun holder 1413, and POS terminal. The charging indicator light 1411 visually displays the charging status, such as "charging," "charging complete," and "fault." The display screen 1412 provides more detailed charging information, such as the charge level, charging time, and charging cost. The charging gun holder 1413 holds the charging gun for easy access. The POS terminal is used for payment and other related operations. These external components are connected to the DC circuit breaker 1417 via the voltage conversion module 1416. The voltage conversion module 1416 is responsible for converting the input 24V voltage to the 12V operating voltage required by devices such as the charging indicator light 1411, display screen 1412, and POS terminal, ensuring normal and stable operation. The DC circuit breaker 1417 serves as a protective switch for the entire circuit, connecting key internal components such as the charging module 13, cold source 121, and acquisition board 122. In the event of an abnormality such as an overload or short circuit, the DC circuit breaker 1417 automatically disconnects the circuit to protect the equipment.

[0058] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A dual-gun liquid-cooled charging pile, characterized in that: include: A charging pile body, with a gun-line structure installed on the side of the charging pile body, the gun-line structure including a first charging gun and a second charging gun; The charging pile body also includes a liquid cooling system for reducing the temperature of the first charging gun and the second charging gun. The liquid cooling system includes a cold source, a collection plate, and a liquid pipe arranged in the first charging gun and the second charging gun. The cold source includes a liquid outlet and a liquid return port. The liquid pipe connects the liquid outlet and the liquid return port. The collection plate collects the temperature of the liquid outlet and the liquid return port to control the liquid discharge rate of the liquid outlet.

2. The dual-gun liquid-cooled charging pile according to claim 1, characterized in that: The charging pile body further includes a charging module, and the charging module includes a first charging module and a second charging module arranged adjacent to each other on the left and right; The first charging module is connected to the first charging gun, and the first charging module is used to provide current to the first charging gun; The second charging module is connected to the second charging gun, and the second charging module is used to provide current to the second charging gun.

3. The dual-gun liquid-cooled charging pile according to claim 2, characterized in that: The first charging module includes a first charging control board, a first gun line adapter board, a first protocol converter, a first DC contactor, a second DC contactor, a first shunt and a first electric meter arranged in an upper and lower manner; The first DC contactor is connected to the positive electrode of the first charging gun, and the first shunt is connected to the negative electrode of the first charging gun through the second DC contactor; The first DC contactor and the second DC contactor are connected to the acquisition board through the first charging control board.

4. The dual-gun liquid-cooled charging pile according to claim 3, characterized in that: The second charging module includes a second charging control board, a second gun line adapter board, a second protocol converter, a third DC contactor, a fourth DC contactor, a second shunt and a second electric meter arranged above and below; The third DC contactor is connected to the positive electrode of the second charging gun, and the second shunt is connected to the negative electrode of the second charging gun through the fourth DC contactor; The third DC contactor and the fourth DC contactor are connected to the acquisition board through the second charging control board.

5. The dual-gun liquid-cooled charging pile according to claim 4, characterized in that: The cold source includes a heat dissipation pipe, a water tank and a pump connected in sequence, and the pump is connected to a controller, and the controller controls the liquid discharge rate of the pump; The pump is connected to the liquid outlet, and a temperature detector is provided between the pump and the liquid outlet; The heat dissipation pipe is connected to the liquid return port, and a temperature return detector is provided between the liquid return port and the heat dissipation pipe.

6. The dual-gun liquid-cooled charging pile according to claim 5, characterized in that: The cold source further includes a fan, an air outlet of the fan is arranged toward the heat dissipation pipe, the fan is connected to the controller, and the controller controls the rotation speed of the fan.

7. The dual-gun liquid-cooled charging pile according to claim 5, characterized in that: The liquid outlet includes a first liquid outlet and a second liquid outlet, the liquid pipe includes a first liquid pipe and a second liquid pipe, and the liquid return port includes a first positive electrode liquid return port, a first negative electrode liquid return port, a second positive electrode liquid return port and a second negative electrode liquid return port; The first liquid pipe includes a first liquid inlet pipe and a first positive electrode liquid outlet pipe and a first negative electrode liquid outlet pipe connected to the first liquid inlet pipe, the first liquid inlet pipe is connected to the first liquid outlet, the first positive electrode liquid outlet pipe is connected to the first positive electrode liquid return port, and the first negative electrode liquid outlet pipe is connected to the first negative electrode liquid return port; The second liquid pipe includes a second liquid inlet pipe and a second positive electrode liquid outlet pipe and a second negative electrode liquid outlet pipe connected to the second liquid inlet pipe, the second liquid inlet pipe is connected to the second liquid outlet, the second positive electrode liquid outlet pipe is connected to the second positive electrode liquid return port, and the second negative electrode liquid outlet pipe is connected to the second negative electrode liquid return port.

8. The dual-gun liquid-cooled charging pile according to claim 7, characterized in that: The temperature regeneration detector includes a positive electrode temperature regeneration detector and a negative electrode temperature regeneration detector. The positive electrode temperature regeneration detector is arranged between the first positive electrode liquid return port, the second positive electrode liquid return port and the heat dissipation pipeline, and the negative electrode temperature regeneration detector is arranged between the first negative electrode liquid return port, the second negative electrode liquid return port and the heat dissipation pipeline.

9. The dual-gun liquid-cooled charging pile according to claim 5, characterized in that: A liquid level detector is provided inside the water tank, and the liquid level detector is used to detect the amount of liquid in the water tank.

10. The dual-gun liquid-cooled charging pile according to claim 2, characterized in that: The front and rear doors are oppositely arranged on the front and rear sides of the charging pile body. The outside of the front door is provided with a charging indicator light, a display screen, a charging gun bracket and a POS machine; The charging indicator light, display screen and POS machine are connected to a DC circuit breaker via a voltage conversion module; The DC circuit breaker connects the charging module, the cold source and the acquisition board.

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