Liquid-cooled high-power wireless charging pile with heat recovery function

Abstract

The present application relates to a kind of liquid-cooled high-power wireless charging pile with heat recovery function, including wireless charging module, set in the side of pile body, for the high-power wireless charging of power receiving equipment;Liquid cooling system, it includes cooling liquid flow channel and cooling fin, cooling liquid flow channel is attached and set in the both sides of extended outer tube, pump is set in the bottom of pile body;Pump is used to drive cooling liquid in the closed loop of cooling liquid flow channel and cooling fin circulation;Through the collaborative design of liquid cooling and heat recovery, the comprehensive performance of high-power wireless charging pile is significantly improved.Liquid cooling system uses the layout of attached flow channel and vortex pipe, the heat dissipation efficiency is more than 40% than traditional air cooling, can stably support the wireless charging of more than 200kW power, solve the problem of equipment derating caused by high temperature, at the same time, heat recovery system converts more than 60% of waste heat in the charging process into usable energy through heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of technology, and specifically to a liquid-cooled high-power wireless charging pile with heat recovery function. Background Technology

[0002] With the widespread adoption of electric vehicles and other electric devices, high-power wireless charging technology has become a crucial development direction in the charging field due to its advantages such as no physical contact and ease of operation. However, during high-power wireless charging, the wireless charging module (especially the coil and inverter) generates a significant amount of heat. If heat dissipation is not timely, it can easily lead to decreased device efficiency, shortened lifespan, and even safety hazards. Especially for high-power wireless charging devices installed in residential parking lots, traditional air cooling methods have limited effectiveness in high-power scenarios. While liquid cooling is more efficient, existing liquid cooling systems often focus solely on heat dissipation and do not effectively utilize the generated heat, resulting in energy waste.

[0003] Meanwhile, current charging pile designs suffer from low integration between the heat dissipation system and the charging module, and unreasonable pipeline layout, resulting in poor heat dissipation efficiency. Furthermore, most charging piles lack flexible thermal management mechanisms, failing to dynamically adjust heat dissipation strategies based on charging power and ambient temperature, making it difficult to balance heat dissipation and energy conservation under extreme conditions. Therefore, developing a high-power wireless charging pile with both efficient heat dissipation and heat recovery functions is key to solving these problems, ensuring stable equipment operation while achieving cascaded energy utilization, aligning with the development trend of energy conservation and emission reduction. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a liquid-cooled high-power wireless charging pile with heat recovery function.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: it includes a pile body; A wireless charging module is installed on one side of the charging pile and is used to wirelessly charge the receiving device at high power. A liquid cooling heat dissipation system includes coolant channels and heat sinks, wherein the coolant channels are fitted to both sides of the extended outer pipe, and a pump is installed at the bottom of the pile body; The pump is used to drive the coolant to circulate in a closed loop that flows through the coolant channel and the heat sink; as well as A heat recovery system includes a heat exchanger and a second circulation pipeline. The heat exchanger is coupled to the bottom of the wireless charging module and is used to absorb the heat generated by the wireless charging module during the charging process. The second circulation pipeline guides the heat generated by the wireless charging module to a heat-using terminal through the heat exchanger.

[0006] The beneficial effects of this invention are: (1) This invention significantly improves the overall performance of high-power wireless charging piles through the synergistic design of liquid cooling and heat recovery. The liquid cooling system adopts a fitted flow channel and vortex pipe layout, which improves the heat dissipation efficiency by more than 40% compared with traditional air cooling, and can stably support wireless charging with a power of more than 200kW, solving the problem of equipment derating caused by high temperature. At the same time, the heat recovery system converts more than 60% of the waste heat during the charging process into usable energy through a heat exchanger, such as providing hot water or heating for surrounding facilities, which is in line with the concept of green energy development.

[0007] (2) The hybrid enclosure and dual-circulation pipeline simplify the structure and reduce the difficulty of installation and maintenance; the electrically controlled three-way valve and internal valve realize dynamic thermal management, which can automatically adjust according to the ambient temperature and heat demand, and can operate stably in environments ranging from -20℃ to 40℃. The setting of the charging station further expands the application scenarios, enabling the charging pile to serve both new energy vehicles and small equipment, thereby improving the comprehensive utilization value of the equipment. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the second coolant tank of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the soft outer cover of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the pump of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the wireless charging coil of the present invention; Figure 6 This is a flowchart of the workflow of the present invention.

[0009] The attached diagram lists the components represented by each number as follows: 100. Charging pile; 110. Wired charging unit; 120. Mixing box; 121. Pump; 200. Wireless charging module; 210. Second coolant tank; 220. Inner coolant pipe; 230. Inner valve; 231. Wireless charging coil; 300. Extended outer tube; 310. Soft outer cover; 311. Heat sink; 312. Coolant flow channel; 400. Second circulation pipeline; 410. Heat exchanger. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0011] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0012] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0013] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0014] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application. Example 1

[0015] refer to Figure 1-6 As shown, a liquid-cooled high-power wireless charging pile with heat recovery function includes a pile body 100. The wireless charging module 200 is located on one side of the charging pile 100 and is used to perform high-power wireless charging on the receiving device. The liquid cooling heat dissipation system includes a coolant flow channel 312 and a heat sink 311. The coolant flow channel 312 is fitted to both sides of the extended outer pipe 300, and a pump 121 is installed at the bottom of the pile body 100. Pump 121 is used to drive the coolant to circulate in a closed loop through the coolant channel 312 and the heat sink 311; as well as The heat recovery system includes a heat exchanger 410 and a second circulation pipe 400. The heat exchanger 410 is coupled to the bottom of the wireless charging module 200 and is used to absorb the heat generated during the charging process of the wireless charging module 200. The second circulation pipe 400 guides the heat generated by the wireless charging module 200 to a heat-using terminal through the heat exchanger 410.

[0016] The charging pile integrates a wireless charging module 200, a liquid cooling system, and a heat recovery system through the pile body 100. The wireless charging module 200 enables high-power wireless charging; in the liquid cooling system, the pump 121 drives the coolant to circulate in a closed loop formed by the coolant flow channel 312 (attached to the extended outer pipe 300) and the heat sink 311, carrying away the heat around the extended outer pipe 300; the heat recovery system absorbs the heat from the wireless charging module 200 through the heat exchanger 410 and transfers it to the heat-using terminal (such as a hot water supply system) through the second circulation pipeline 400.

[0017] The cooling inside the second circulation pipe 400 can also directly exchange heat with the wireless charging coil 231, carrying away its heat and allowing more heat to be recycled. The second coolant tank 210 performs secondary heat exchange with the second circulation pipe 400, carrying away the heat through the coolant and dissipating it through the heat sink 311, ensuring that the wireless charging coil 231 does not overheat. The liquid cooling system can be controlled by a three-way valve to operate, or both can operate simultaneously, to achieve faster cooling of the wireless charging coil 231.

[0018] Among them: the liquid cooling system improves heat dissipation efficiency and ensures the stability of high-power charging; the heat recovery system realizes the reuse of waste heat, improves energy utilization, and reduces energy consumption.

[0019] In other words, in the wireless charging station for electric vehicles, the liquid cooling system conducts the heat generated during charging through the coolant, the heat sink 311 dissipates some of the excess heat, and the heat exchanger 410 recovers the heat for convenient supply such as hot water for buildings around the charging station, thereby increasing the energy utilization rate by more than 20%. Example 2

[0020] refer to Figure 1 and Figure 5 As shown, a mixing tank 120 is installed at the bottom of the pile body 100. The mixing tank 120 is filled with coolant for cooling and is equipped with a pump 121.

[0021] Pump 121 is connected to a three-way valve, which is connected to both the liquid cooling system and the heat recovery system. The three-way valve is an electrically controlled valve.

[0022] The mixing tank 120 at the bottom of the pile body 100 stores coolant, and the built-in pump 121 directly draws coolant from the tank to drive circulation, simplifying pipeline connections. The pump 121 is connected to the liquid cooling heat dissipation system and the heat recovery system through an electrically controlled three-way valve, which can switch or distribute the coolant flow according to the working conditions (such as charging power and heat demand).

[0023] The integrated design reduces pipeline losses and lowers the risk of leakage; the hybrid enclosure 120 can buffer coolant, stabilize system pressure, and improve heat dissipation continuity. It dynamically adjusts the heat dissipation and recovery ratio, for example, prioritizing heat recovery during low-power charging and enhancing heat dissipation during high-power charging, thus improving system flexibility and energy efficiency.

[0024] In other words, the mixing chamber 120 has a volume of 50L and a built-in temperature sensor. When the coolant temperature exceeds 40℃, the pump 121 automatically increases its speed to ensure heat dissipation. When a heat-consuming terminal demand is detected, the three-way valve directs 70% of the coolant to the heat exchanger 410; when the charging power exceeds 100kW, it automatically switches to 80% of the flow to the heat sink 311. Example 3

[0025] refer to Figures 1-5 As shown, the extended outer pipe 300 is connected to one side of the bottom of the mixing tank 120. Two sets of coolant pipes are provided inside the extended outer pipe 300 for connecting to the second coolant tank 210 and the internal coolant pipe 220 respectively. The two sets of coolant pipes are respectively connected to the interface of the three-way valve.

[0026] The two sets of coolant pipes inside the extended outer pipe 300 are respectively connected to the second coolant tank 210 and the inner coolant pipe 220, and correspond to the three-way valve interface to realize dual independent circulation.

[0027] Multiple sets of wireless charging coils 231 are installed inside the internal coolant pipe 220. The internal coolant pipe 220 is arranged in a vortex shape and an internal valve 230 is connected in the middle. The internal valve 230 is connected to the second circulation pipe 400.

[0028] The vortex-shaped inner coolant pipe 220 surrounds the wireless charging coil 231, increasing the contact area, and the inner valve 230 controls the flow rate of coolant entering the second circulation pipe 400.

[0029] The coolant flow channel 312 and the outer wall of the heat sink 311 are provided with a soft outer cover 310 for protection.

[0030] The soft outer casing 310 wraps around the coolant flow channel 312 and the heat sink 311, isolating them from external dust and moisture, while also cushioning vibrations.

[0031] A wired charging unit 110 is connected to the middle of one side of the pile body 100.

[0032] The wired charging unit 110 is located in the middle of one side of the charging pile 100, and is used to limit the charging power or connect low-power devices, complementing the high-power wireless charging module.

[0033] The system features separate cooling and recovery paths to prevent interference and improve system reliability; an extended outer tube (300mm) protects the piping, adapting to complex outdoor environments. A vortex layout enhances coil heat dissipation efficiency, while an internal valve (230) precisely controls heat recovery, preventing overcooling of the coil from affecting charging efficiency. This extends the lifespan of heat dissipation components and reduces maintenance costs; soft materials reduce noise and improve user experience. The system expands the applicable scenarios for charging stations, simultaneously meeting the charging needs of high-power vehicles and small devices (such as electric bicycles), improving equipment utilization.

[0034] In other words, the outer extension tube 300 is made of corrosion-resistant metal and has an internal 10mm diameter high-pressure resistant hose to deliver coolant for heat dissipation (flow rate 2L / min) and coolant for recovery (flow rate 1.5L / min). The inner coolant tube 220 is made of copper with a vortex radius of 50cm, surrounding eight wireless charging coils 231. When the coil temperature is below 35℃, the inner valve 230 closes to 30% of its opening. The outer cover is made of silicone, 2mm thick, with a temperature resistance range of -40℃ to 120℃, suitable for outdoor rain and snow environments. The wired charging section 110 provides a maximum 10kW wired charging interface and is equipped with intelligent identification function to automatically match the device's power requirements.

[0035] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of the invention is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A liquid-cooled high-power wireless charging pile with heat recovery function, characterized in that, Including the pile body (100); A wireless charging module (200) is disposed on one side of the pile body (100) and is used to perform high-power wireless charging on the powered device; The liquid cooling heat dissipation system includes a coolant flow channel (312) and a heat sink (311). The coolant flow channel (312) is fitted to both sides of the extended outer tube (300), and a pump (121) is provided at the bottom of the pile body (100). The pump (121) is used to drive the coolant to circulate in a closed loop through the coolant channel (312) and the heat sink (311); as well as A heat recovery system includes a heat exchanger (410) and a second circulation pipeline (400). The heat exchanger (410) is coupled to the bottom of the wireless charging module (200) and is used to absorb the heat generated during the charging process of the wireless charging module (200). The second circulation pipeline (400) guides the heat generated by the wireless charging module (200) to a heat-using terminal through the heat exchanger (410). A mixing tank (120) is installed at the bottom of the pile body (100), the mixing tank (120) is filled with coolant for cooling, and a pump (121) is installed inside. The pump (121) is connected to a three-way valve, which is connected to the liquid cooling heat dissipation system and the heat recovery system respectively. The three-way valve is an electrically controlled valve. The extended outer pipe (300) is connected to one side of the bottom of the mixing tank (120). The extended outer pipe (300) is provided with two sets of coolant pipes for connecting to the second coolant tank (210) and the internal coolant pipe (220) respectively. The two sets of coolant pipes are respectively connected to the interface of the three-way valve. Multiple sets of wireless charging coils (231) are installed inside the inner coolant pipe (220). The inner coolant pipe (220) is arranged in a vortex shape and an inner valve (230) is connected in the middle. The inner valve (230) is connected to the second circulation pipe (400).

2. The liquid-cooled high-power wireless charging pile with heat recovery function according to claim 1, characterized in that, The coolant flow channel (312) and the outer wall of the heat sink (311) are provided with a soft outer cover (310) for protection.

3. A liquid-cooled high-power wireless charging pile with heat recovery function according to claim 1, characterized in that, A wired charging unit (110) is connected to the middle of one side of the pile body (100).

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