Liquid cooling charging pile

Abstract

The utility model relates to a liquid cooling charging pile which comprises a central liquid cooling system, one or more chargers, a liquid outlet pipe and a liquid inlet pipe, wherein the liquid outlet pipe and the liquid inlet pipe are connected with the central liquid cooling system; the cooling loop is arranged in the charger and is used for cooling the charger; the input end of the cooling loop is connected with the central liquid cooling system through a liquid outlet pipe and is used for receiving a refrigerant provided by the central liquid cooling system; the output end of the cooling loop is connected with the central liquid cooling system through a liquid inlet pipe and used for recycling refrigerants flowing through the cooling loop to the central liquid cooling system. And the central liquid cooling system is used for cooling the refrigerant input by the liquid inlet pipe and outputting the refrigerant through the liquid outlet pipe. According to the utility model, the liquid cooling system main body is separated from the charging pile main body, so that the maintenance difficulty of each charging pile is reduced, and the maintenance cost of the whole charging pile is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging pile technical field more specifically, relate to a liquid cooling charging pile. BACKGROUND

[0002] With the increasingly serious global energy crisis and the enhancement of environmental protection consciousness, new energy vehicles as a clean, low-carbon traffic tool gradually attract attention. As the infrastructure of new energy vehicles, the application scale of charging piles is also growing. As a power device, the charging pile must bring various heat management problems while improving the charging speed and solving the high-power supercharging. The cooling scheme matched with the charging pile has become an important performance index of the charging pile. How to realize low-cost and high-efficiency cooling is particularly important. SUMMARY

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned part of the technical defects of the prior art, a liquid cooling charging pile is provided.

[0004] The utility model adopts the technical scheme in the technical field to solve its technical problem: a liquid cooling charging pile is constructed, comprising: a central liquid cooling system, one or more charging machines, a liquid outlet pipe and a liquid inlet pipe connected with the central liquid cooling system; and

[0005] The cooling circuit is arranged in the charging machine and used for cooling the charging machine;

[0006] The input end of the cooling circuit is connected with the central liquid cooling system through the liquid outlet pipe and used for receiving the refrigerant provided by the central liquid cooling system;

[0007] The output end of the cooling circuit is connected with the central liquid cooling system through the liquid inlet pipe and used for recycling the refrigerant flowing through the cooling circuit to the central liquid cooling system;

[0008] The central liquid cooling system is used for cooling the refrigerant input through the liquid inlet pipe and outputting through the liquid outlet pipe.

[0009] Preferably, in the embodiment of the utility model, the central liquid cooling system comprises a first loop and a second loop;

[0010] The first loop and the second loop are not in circulation with each other and exchange heat with the second loop to cool the refrigerant in the second loop;

[0011] The first end of the second loop is connected with the liquid outlet pipe, and the second end of the second loop is connected with the liquid inlet pipe.

[0012] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the first loop comprises a heat dissipation module, a first heat exchange module and a plurality of first pipelines;

[0013] The first end of the heat dissipation module is communicated with the second end of the heat exchange module through one first pipeline;

[0014] The second end of the heat dissipation module is communicated with the first end of the heat exchange module through another first pipeline;

[0015] The second loop exchanges heat with the first loop through the heat exchange module.

[0016] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the second loop comprises a central circulating pump, a refrigerant storage device, a second heat exchange module and a plurality of second pipelines;

[0017] The output end of the central circulating pump is communicated with the first end of the second heat exchange module through one second pipeline, and the second end of the second heat exchange module is connected with the liquid outlet pipe;

[0018] The input end of the central circulating pump is communicated with the output end of the refrigerant storage device through one second pipeline, and the input end of the refrigerant storage device is connected with the liquid inlet pipe;

[0019] The second loop exchanges heat with the first heat exchange module through the second heat exchange module.

[0020] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the second heat exchange module comprises a heat exchange pipe, and the heat exchange pipe is arranged in the first heat exchange module.

[0021] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the medium flow directions in the first loop and the second loop are opposite.

[0022] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the second loop further comprises a first valve and / or a second valve;

[0023] The first valve is arranged at the output end of the central circulating pump and is used for controlling the refrigerant flow entering the second heat exchange module;

[0024] The second valve is arranged at the input end of the central circulating pump and is used for controlling the refrigerant flow entering the central circulating pump.

[0025] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the cooling circuit comprises:

[0026] A first cooling circuit arranged in the main cabinet of the charger and used for cooling the main cabinet of the charger;

[0027] A second cooling circuit arranged in the terminal of the charger and used for cooling the terminal of the charger.

[0028] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the first cooling circuit comprises a third valve, a first stop valve and a plurality of third pipelines;

[0029] The liquid outlet pipe is connected with the third valve through a third pipeline, so as to control the refrigerant flow of the first cooling circuit through the third valve;

[0030] The liquid inlet pipe is connected with the first stop valve through another third pipeline, so as to prevent the refrigerant of the first cooling circuit from flowing backward through the first stop valve.

[0031] Preferably, in the embodiment of the liquid-cooled charging pile of the utility model, the second cooling circuit comprises a fourth valve, a second stop valve and a plurality of fourth pipelines;

[0032] The liquid outlet pipe is connected with the fourth valve through a fourth pipeline, so as to control the refrigerant flow of the second cooling circuit through the fourth valve;

[0033] The liquid inlet pipe is connected with the second stop valve through another fourth pipeline, so as to prevent the refrigerant of the second cooling circuit from flowing backward through the second stop valve.

[0034] The liquid-cooled charging pile of the utility model has the following beneficial effects: by separating the liquid cooling system main body from the charging pile main body, the maintenance difficulty of each charging pile is reduced, and the maintenance cost of the entire charging pile is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] The utility model will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0036] Figure 1 is a structural schematic view of an embodiment of the liquid-cooled charging pile of the utility model. DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation mode of the utility model will be described in detail with reference to the drawings.

[0038] As Figure 1 shown, an embodiment of the liquid-cooled charging pile of the utility model is shown. In Figure 1The embodiment of the liquid-cooled charging pile shown in the utility model, including: central liquid cooling system 110, one or more charging machines 120, connecting central liquid cooling system 110 liquid outlet pipe 130 and liquid inlet pipe 140;And set in the charging machine 120, for cooling the cooling circuit (not shown in the figure) of charging machine 120 is cooled;The input end of cooling circuit is connected with central liquid cooling system 110 through liquid outlet pipe 130, for receiving the refrigerant provided by central liquid cooling system 110;The output end of cooling circuit is connected with central liquid cooling system 110 through liquid inlet pipe 140, for recycling the refrigerant flowing through the cooling circuit to central liquid cooling system 110;Central liquid cooling system 110 is used to cool the refrigerant inputted by liquid inlet pipe 140 and is outputted through liquid outlet pipe 130.

[0039] Specifically, central liquid cooling system 110 is used to provide cooling refrigerant, wherein the refrigerant can be water or other cooling liquid. The cooling refrigerant provided by central liquid cooling system 110 is inputted to the input end of the cooling circuit through liquid outlet pipe 130, circulated in the cooling circuit to cool the charging machine 120. The cooling circuit is arranged in the charging machine 120, and the refrigerant circulates in the cooling circuit and is cooled again by entering central liquid cooling system 110 through liquid inlet pipe 140 after circulation. Wherein, the number of charging machines 120 can be multiple, when the number of charging machines 120 is multiple, corresponding cooling circuit is arranged in each charging machine 120, and each cooling circuit is provided with refrigerant independently by central liquid cooling system 110 and liquid outlet pipe 130 to cool the corresponding charging machine 120. It can be guaranteed that the cooling process of multiple charging machines 120 will not affect each other. At the same time, in the maintenance of the cooling system, such as the operation of cooling liquid replacement, only central liquid cooling system 110 needs to be maintained, and each charging machine 120 does not need to be cooled and replaced, reducing the maintenance workload.

[0040] Optionally, the central liquid cooling system 110 comprises a first loop and a second loop; the first loop and the second loop are not in flow communication with each other and perform heat exchange with each other to cool the refrigerant in the second loop; a first end of the second loop is connected to the liquid outlet pipe 130, and a second end of the second loop is connected to the liquid inlet pipe 140. Specifically, in the central liquid cooling system 110, heat exchange is performed through the first loop and the second loop, wherein the first loop is used to cool the refrigerant in the second loop, and the refrigerant in the second loop is cooled and then input to the cooling loop through the liquid outlet pipe 130. The refrigerant output by the cooling loop is cooled through the second loop. The first loop and the second loop are mutually isolated loops, that is, the medium in the first loop only flows in the first loop, and the first loop can be understood as a closed circulation loop. The medium in the second loop returns to the second loop after passing through the cooling loop. It can be understood that the second loop and the cooling loop also form a closed circulation loop. The low-temperature part of the first loop and the high-temperature part of the second loop are in contact or close to each other to form a heat exchange path.

[0041] In a specific embodiment, the flow directions of the medium in the first loop and the second loop are opposite, so that the first loop and the second loop can fully perform heat exchange and improve the heat exchange effect.

[0042] Optionally, the first loop comprises a heat dissipation module 1111, a first heat exchange module 1112, and a plurality of first pipes 1113; a first end of the heat dissipation module 1111 is in communication with a second end of the heat exchange module through a first pipe 1113; a second end of the heat dissipation module 1111 is in communication with a first end of the heat exchange module through another first pipe 1113; the second loop performs heat exchange with the first loop through the heat exchange module. Specifically, in the first loop, the heat dissipation module 1111 is used to perform heat exchange with the outside, that is, the liquid in the first loop flows through the heat dissipation module 1111 to dissipate heat to the outside to achieve cooling during the flow process, and the cooled liquid in the first loop flows to the first heat exchange module 1112 to perform heat exchange with the second loop. It can be understood that the high-temperature part of the second loop passes through the first heat exchange module 1112 and exchanges heat with the first heat exchange module 1112. That is, the first heat exchange module 1112 carries away the heat in the second loop, so that the temperature of the refrigerant in the second loop is reduced.

[0043] Optionally, the second loop comprises a central circulating pump 1121, a refrigerant storage device 1124, a second heat exchange module 1122 and a plurality of second pipelines 1123; an output end of the central circulating pump 1121 is in communication with a first end of the second heat exchange module 1122 through a second pipeline 1123, and a second end of the second heat exchange module 1122 is connected to the liquid outlet pipe 130; an input end of the central circulating pump 1121 is in communication with an output end of the refrigerant storage device 1124 through a second pipeline 1123, and an input end of the refrigerant storage device 1124 is connected to the liquid inlet pipe 140; the second loop exchanges heat with the first heat exchange module 1112 through the second heat exchange module 1122. Specifically, in the second loop, the refrigerant storage device 1124 is used to store refrigerant. The refrigerant storage device 1124 can be a coolant storage tank, which stores coolant. The central circulating pump 1121 extracts refrigerant from the refrigerant storage device and inputs it into the second heat exchange module 1122 through the third pipeline 1213, exchanges heat with the first heat exchange module 1112 in the second heat exchange module 1122, and reduces the temperature of the refrigerant. The central circulating pump 1121 can be a booster pump with a certain self-suction capacity. The maximum power can be configured according to the number of chargers 120. The refrigerant storage device 1124 stores a certain amount of coolant, which is used to supplement the liquid in the second loop and the cooling loop. In a specific embodiment, a liquid level meter is also arranged in the refrigerant storage device 1124 to obtain the liquid level of the coolant in the refrigerant storage device 1124 through the liquid level meter, so as to avoid the central circulating pump 1121 from being damaged due to idling when the refrigerant storage device 1124 lacks liquid.

[0044] In a specific embodiment, the second heat exchange module 1122 comprises a heat exchange pipe, and the heat exchange pipe is arranged in the first heat exchange module 1112. That is, the second heat exchange module 1122 adopts a heat exchange pipe, which can be a U-shaped heat exchange pipe. In order to increase the contact path of the second loop and the first heat exchange module 1112 as much as possible, the refrigerant in the second loop is sufficiently cooled. In an embodiment, the second heat exchange module 1122 can also be other structural members with heat exchange capacity.

[0045] Optionally, the second loop further comprises a first valve 1125 and / or a second valve 1126; the first valve 1125 is arranged at the output end of the central circulation pump 1121, and is used to control the refrigerant flow into the second heat exchange module 1122; the second valve 1126 is arranged at the input end of the central circulation pump 1121, and is used to control the refrigerant flow into the central circulation pump 1121. Specifically, in the second loop, the first valve 1125 can be arranged at the output end of the central circulation pump 1121. It can be understood that the first valve 1125 can be connected with the output end of the central circulation pump 1121 and the input end of the second heat exchange module 1122 through the second pipeline 1123, and is used to control the refrigerant flow of the central circulation pump 1121 to the second heat exchange module 1122. In the second loop, the second valve 1126 can also be arranged at the input end of the central circulation pump 1121. It can be understood that the second valve 1126 can be connected with the input end of the central circulation pump 1121 and the output end of the refrigerant storage device through the second pipeline 1123, and is used to control the refrigerant flow of the refrigerant storage device to the central circulation pump 1121. The adjustment process of the flow control can include completely shutting off the refrigerant flow in the pipeline.

[0046] Optionally, the cooling circuit comprises: a first cooling circuit (not shown in the figure) arranged in the main cabinet 121 of the charger 120, and used to cool the main cabinet 121 of the charger 120; and a second cooling circuit (not shown in the figure) arranged in the terminal 122 of the charger 120, and used to cool the terminal 122 of the charger 120. Specifically, considering the specific structure of the charger 120, corresponding cooling circuits can be arranged in the main cabinet 121 of the charger 120 and the terminal 122 of the charger 120, respectively. That is, the first cooling circuit is arranged in the main cabinet 121 of the charger 120, and the central liquid cooling system 110 and the liquid outlet pipe 130 provide refrigerant to the first cooling circuit to cool the main cabinet 121 of the charger 120. The second cooling circuit is arranged in the terminal 122 of the charger 120, and the central liquid cooling system 110 and the liquid outlet pipe 130 provide refrigerant to the second cooling circuit to cool the terminal 122 of the charger 120. Through this process, the cooling process of the main cabinet 121 and the terminal 122 of the charger 120 can be realized respectively, and they will not affect each other. The first cooling circuit and the second cooling circuit can be pipelines arranged according to the internal structures of the main cabinet 121 and the terminal 122 of the charger 120. The refrigerant flows in the pipeline to take away the heat inside the charger 120.

[0047] Optionally, the first cooling circuit comprises a third valve 1211, a first stop valve 1212 and a plurality of third pipes 1213; the outlet pipe 130 is connected to the third valve 1211 through a third pipe 1213 to control the refrigerant flow of the first cooling circuit through the third valve 1211; the inlet pipe 140 is connected to the first stop valve 1212 through another third pipe 1213 to prevent the refrigerant of the first cooling circuit from flowing reversely through the first stop valve 1212. Specifically, in the first cooling circuit, the third valve 1211 can be provided and connected to the outlet pipe 130 through the third pipe 1213 to control the refrigerant flow of the first cooling circuit through the outlet pipe 130. The specific control process can be set according to the temperature of the main cabinet 121 of the charger 120. In an embodiment, when the charger 120 is not used, the third valve 1211 can be used to shut off the refrigerant input of the outlet pipe 130 to the first cooling circuit. Meanwhile, the first stop valve 1212 can be provided and connected to the inlet pipe 140 through the third pipe 1213 to prevent the refrigerant of the inlet pipe 140 from being reversely input to the first cooling circuit. In a specific embodiment, the third valve 1211 can be an electric valve to adjust the opening degree according to the electric signal to achieve the purpose of flow control.

[0048] Optionally, the second cooling circuit comprises a fourth valve 1221, a second stop valve 1222 and a plurality of fourth pipes 1223; the outlet pipe 130 is connected to the fourth valve 1221 through a fourth pipe 1223 to control the refrigerant flow of the second cooling circuit through the fourth valve 1221; the inlet pipe 140 is connected to the second stop valve 1222 through another fourth pipe 1223 to prevent the refrigerant of the second cooling circuit from flowing reversely through the second stop valve 1222. Specifically, in the second cooling circuit, the fourth valve 1221 can be provided and connected to the outlet pipe 130 through the fourth pipe 1223 to control the refrigerant flow of the second cooling circuit through the outlet pipe 130. The specific control process can be set according to the temperature of the terminal 122 of the charger 120. In an embodiment, when the charger 120 is not used, the fourth valve 1221 can be used to shut off the refrigerant input of the outlet pipe 130 to the second cooling circuit. Meanwhile, the second stop valve 1222 can be provided and connected to the inlet pipe 140 through the fourth pipe 1223 to prevent the refrigerant of the inlet pipe 140 from being reversely input to the second cooling circuit. In a specific embodiment, the fourth valve 1221 can be an electric valve to adjust the opening degree according to the electric signal to achieve the purpose of flow control.

[0049] Through the embodiment of the utility model, the liquid cooling equipment main body and the charging equipment main body are designed separately, and the control logic is re-planned, the liquid cooling equipment can cool multiple groups of charging machines 120 bodies, improves the use efficiency of the liquid cooling equipment, makes the power upper limit of the split type charging machine 120 can be further improved. Meanwhile, each pipe joint can be designed as a universal structure, and when the charging machine 120 is upgraded or replaced, the existing liquid cooling system can also be compatible, improving the compatibility of the liquid cooling system and the charging pile. Moreover, after the liquid cooling equipment and the charging machine 120 body are separated, the noise generated by the charging machine 120 body during charging is further reduced, making the user charging experience more comfortable and suitable for more use occasions.

[0050] It can be understood that the above embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent; it should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the utility model, and some deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the claims of the utility model should belong to the scope of the claims of the utility model.

Claims

1. A liquid-cooled charging pile, characterized in that, include: A central liquid cooling system, one or more chargers, and an outlet pipe and an inlet pipe connected to the central liquid cooling system; as well as A cooling circuit installed inside the charger for cooling down the charger; The input end of the cooling circuit is connected to the central liquid cooling system through the liquid outlet pipe, and is used to receive the refrigerant provided by the central liquid cooling system; The output end of the cooling circuit is connected to the central liquid cooling system through the liquid inlet pipe, which is used to recover the refrigerant flowing through the cooling circuit to the central liquid cooling system; The central liquid cooling system is used to cool the refrigerant input through the inlet pipe and output it through the outlet pipe.

2. The liquid-cooled charging pile according to claim 1, characterized in that, The central liquid cooling system includes a first loop and a second loop; The first loop and the second loop are not interconnected, but the first loop exchanges heat with the second loop to cool the refrigerant in the second loop; The first end of the second loop is connected to the outlet pipe, and the second end of the second loop is connected to the inlet pipe.

3. The liquid-cooled charging pile according to claim 2, characterized in that, The first loop includes a heat dissipation module, a first heat exchange module, and several first pipes; The first end of the heat dissipation module is connected to the second end of the heat exchange module through a first pipe; The second end of the heat dissipation module is connected to the first end of the heat exchange module through another first pipe; The second loop exchanges heat with the first loop through the heat exchange module.

4. The liquid-cooled charging pile according to claim 3, characterized in that, The second loop includes a central circulation pump, a refrigerant storage device, a second heat exchange module, and several second pipelines; The output end of the central circulation pump is connected to the first end of the second heat exchange module through a second pipeline, and the second end of the second heat exchange module is connected to the liquid outlet pipe. The input end of the central circulation pump is connected to the output end of the refrigerant storage device via a second pipeline, and the input end of the refrigerant storage device is connected to the liquid inlet pipe. The second loop exchanges heat with the first heat exchange module through the second heat exchange module.

5. The liquid-cooled charging pile according to claim 4, characterized in that, The second heat exchange module includes a heat exchange tube, which passes through the first heat exchange module.

6. The liquid-cooled charging pile according to claim 2, characterized in that, The medium flows in opposite directions in the first loop and the second loop.

7. The liquid-cooled charging pile according to claim 4, characterized in that, The second loop also includes a first valve and / or a second valve; The first valve is located at the output end of the central circulation pump and is used to control the refrigerant flow rate into the second heat exchange module; The second valve is located at the input end of the central circulation pump and is used to control the refrigerant flow rate entering the central circulation pump.

8. The liquid-cooled charging pile according to claim 1, characterized in that, The cooling circuit includes: A first cooling circuit is installed inside the main cabinet of the charger for cooling down the main cabinet of the charger. A second cooling circuit is installed inside the terminal of the charger to cool down the terminal of the charger.

9. The liquid-cooled charging pile according to claim 8, characterized in that, The first cooling circuit includes a third valve, a first shut-off valve, and several third pipelines; The liquid outlet pipe is connected to the third valve through the third pipeline, so as to control the refrigerant flow rate of the first cooling circuit through the third valve; The inlet pipe is connected to the first shut-off valve through another third pipe to prevent refrigerant backflow in the first cooling circuit.

10. The liquid-cooled charging pile according to claim 8, characterized in that, The second cooling circuit includes a fourth valve, a second shut-off valve, and several fourth pipes; The liquid outlet pipe is connected to the fourth valve through the fourth pipeline, so as to control the refrigerant flow rate of the second cooling circuit through the fourth valve; The inlet pipe is connected to the second shut-off valve through another fourth pipe to prevent refrigerant backflow in the second cooling circuit.

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