Direct cooling system of charging gun

Abstract

The utility model discloses a direct cooling system of a charging gun. The direct cooling system comprises a condenser, an expansion valve, a liquid storage dryer, a charging pile and a charging cable. The expansion valve communicates with the condenser. The receiver-drier is arranged between the condenser and the expansion valve. The charging pile is arranged on one side of the condenser. The charging cable is electrically connected with the charging pile and comprises an insulating sleeve and a cold liquid pipe penetrating through the insulating sleeve. And a conductor is arranged between the insulating sleeve and the cold liquid pipe. Cooling liquid is arranged in the cold liquid pipe, and the cold liquid pipe is connected with the condenser, the liquid storage dryer and the expansion valve in series. Therefore, the charging cable is cooled, and the charging efficiency and safety of the charging cable are improved.

Description

Technical Field

[0001] This case is about a direct cooling system for charging cables, particularly a charging gun. Background Art

[0002] Electric vehicles are powered by electricity and need to be charged by a charging gun. In addition, in order to increase the charging speed and shorten the charging time, the charging current and power of the DC charging gun for the load will inevitably become larger and larger.

[0003] Furthermore, when using the charging gun of an electric vehicle, one end of the charging gun is connected to the charging pile, and the other end is directly inserted into the charging port of the electric vehicle. However, a large amount of current will pass through the charging gun during the charging process and a large amount of heat will be generated. However, if the large amount of heat is not dissipated in time, it is easy to cause the temperature at the electrode of the charging gun to be too high, resulting in reduced charging efficiency and affecting the safety of the charging process. Utility Model Content

[0004] One of the purposes of this case is to provide a direct cooling system for a charging gun, thereby cooling the charging cable and increasing the efficiency and safety of the charging cable during charging.

[0005] In order to achieve the above-mentioned purpose, this case is a direct cooling system for a charging gun, including a condenser, an expansion valve, a liquid storage dryer, a charging pile and a charging cable. The expansion valve is connected to the condenser. The liquid storage dryer is arranged between the condenser and the expansion valve. The charging pile is arranged on one side of the condenser. The charging cable is electrically connected to the charging pile, and includes an insulating sleeve and a cold liquid pipe passing through the insulating sleeve. A conductor is arranged between the insulating sleeve and the cold liquid pipe. Coolant is arranged in the cold liquid pipe, and the cold liquid pipe is connected in series with the condenser, the liquid storage dryer and the expansion valve. The charging cable is cooled accordingly to increase the efficiency and safety of the charging cable during charging.

[0006] In one embodiment of the present case, the cooling system further includes a controller, and the controller is electrically connected to the condenser.

[0007] In one embodiment of the present case, the cooling system further includes a first temperature and pressure sensor, which is disposed on the cooling liquid pipe and electrically connected to the controller.

[0008] In one embodiment of the present case, the cooling system further includes a pump, which is connected to the cooling liquid pipe and electrically connected to the controller.

[0009] In one embodiment of the present case, the cooling system further includes a fuse, and the fuse is electrically connected to the controller.

[0010] In one embodiment of the present case, the cooling system further includes a second temperature and pressure sensor, and the second temperature and pressure sensor is electrically connected to the controller.

[0011] In one embodiment of the present invention, the conductor includes a plurality of copper strands.

[0012] In one embodiment of the present case, the cooling liquid pipe is a corrugated flexible metal hose.

[0013] Compared with the prior art, the direct cooling system of the charging gun in this case includes a condenser, an expansion valve, a liquid storage dryer and a charging cable. In addition, the charging cable includes an insulating sleeve and a cold liquid pipe, and a coolant is provided in the cold liquid pipe to directly cool the conductor between the insulating sleeve and the cold liquid pipe. Accordingly, the heat of the conductor can be directly exchanged with the coolant, and then the cooling cycle of the condenser, expansion valve and liquid storage dryer is used to ensure that the temperature of the conductor is not too high, thereby increasing the efficiency and safety of the charging cable during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of a direct cooling system for a charging gun.

[0015] Figure 1 This is a schematic diagram of the direct cooling system setting of the charging gun in this case.

[0016] Figure 2 This is a cross-sectional view of the charging cable in this case.

[0017] Figure 3 This is a schematic diagram of the application of the charging cable in this case.

[0018] Description of Figure Numbers:

[0019] 1: cooling system, 2: electric vehicle, 3: charging gun, 4: charging pile, 10: condenser, 20: expansion valve, 30: liquid storage dryer, 40: charging cable, 401: charging positive electrode, 402: charging negative electrode, 41: insulating sleeve, 42: cold liquid pipe, 43: conductor, 431: copper stranded wire, 50: controller, 51: first temperature and pressure sensor, 52: pump, 53: fuse, 54: second temperature and pressure sensor. DETAILED DESCRIPTION

[0020] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0021] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0022] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0023] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0024] The detailed description and technical contents of the present invention are described below with accompanying drawings. However, the drawings are only provided for reference and explanation and are not intended to limit the present invention.

[0025] Please refer to Figure 1 and Figure 3 , which is a schematic diagram of the direct cooling system of the charging gun in this case. This case is a direct cooling system 1 for a charging gun, including a condenser 10, an expansion valve 20, a liquid storage dryer 30, a charging pile 4 and a charging cable 40. The expansion valve 20 is connected to the condenser 10. The liquid storage dryer 30 is arranged between the condenser 10 and the expansion valve 20 to remove dirt and moisture in the coolant and separate gas and liquid. The charging pile 4 is arranged on one side of the condenser 10. The charging cable 40 is electrically connected to the charging pile 4. The charging cable 40 has a charging positive electrode 401 and a charging negative electrode 402, which are used to transmit current and connect a charging gun 3. The structure of the charging cable 40 is described as follows.

[0026] In this embodiment, the direct cooling system 1 of the charging gun further includes a controller 50, a first temperature and pressure sensor 51, a pump 52, a fuse 53 and a second temperature and pressure sensor 54. The controller 50 is electrically connected to the condenser 10. The first temperature and pressure sensor 51, the pump 52, the fuse 53 and the second temperature and pressure sensor 54 are electrically connected to the controller 50.

[0027] Please also refer to Figure 2, which is a cross-sectional view of the charging cable of the present invention. The charging cable 40 of the present invention comprises an insulating sleeve 41 and a cooling liquid pipe 42 passing through the insulating sleeve 41. A conductor 43 is arranged between the insulating sleeve 41 and the cooling liquid pipe 42. The conductor 43 comprises a plurality of copper strands 431. In addition, a cooling liquid 44 is arranged in the cooling liquid pipe 42, and the cooling liquid pipe 42 is connected in series with the condenser 10, the liquid storage dryer 30 and the expansion valve 20 (see also Figure 1 It should be noted that the cooling liquid pipe 42 can be configured as a corrugated flexible metal hose, which is not a limitation in actual implementation.

[0028] Specifically, the first temperature and pressure sensor 51 is disposed on the charging cable 40. The pump 52 is connected to the cooling liquid pipe 42 to increase the flow of the cooling liquid 44. The fuse 53 is used to cut off the power supply when the first temperature and pressure sensor 51 senses that the temperature or pressure of the cooling liquid pipe 42 is too high. The second temperature and pressure sensor 54 is electrically connected to the controller to sense the temperature or pressure of the cooling liquid pipe 42 there.

[0029] Please refer to Figure 3 , is a schematic diagram of the application of the charging cable in this case. The charging cable 40 in this case is applied to the charging gun 3 of an electric vehicle 2. When in use, one end of the charging gun 3 is connected to the charging pile 4, and the other end is directly inserted into the charging port of the electric vehicle 2. Accordingly, the current when the charging gun 3 is charging will increase the temperature of the charging cable 40. The charging cable 40 can dissipate heat through the cooling system 1 of this case, thereby reducing the overall temperature of the charging cable 40 to ensure charging efficiency and safety.

[0030] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Other equivalent changes that apply the spirit of the present invention should all fall within the scope of the present invention. In addition, the present invention may also have other embodiments that are not listed. Without departing from the spirit and essence of the present invention, a person skilled in the art should be able to evolve various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the patent applied for the present invention.

Claims

1. A direct cooling system for a charging gun, characterized in that: include: a condenser; an expansion valve, connected to the condenser; as well as a liquid storage drier, disposed between the condenser and the expansion valve; A charging pile, arranged on one side of the condenser; as well as A charging gun is electrically connected to the charging pile, the charging pile includes a charging cable, the charging cable includes an insulating sleeve and a cooling liquid pipe passing through the insulating sleeve, a conductor is arranged between the insulating sleeve and the cooling liquid pipe, a cooling liquid is arranged in the cooling liquid pipe, and the cooling liquid pipe is connected in series with the condenser, the liquid storage dryer and the expansion valve.

2. The direct cooling system of the charging gun according to claim 1, characterized in that: It further includes a controller which is electrically connected to the condenser.

3. The direct cooling system of the charging gun as claimed in claim 2, characterized in that: It further includes a first temperature and pressure sensor, which is arranged on the cooling liquid pipe and electrically connected to the controller.

4. The direct cooling system of the charging gun according to claim 2, characterized in that: It further includes a pump, which is connected to the cooling liquid pipe and electrically connected to the controller.

5. The direct cooling system of the charging gun as claimed in claim 2, characterized in that: It further includes a fuse electrically connected to the controller.

6. The direct cooling system of the charging gun as claimed in claim 2, characterized in that: It further includes a second temperature and pressure sensor, and the second temperature and pressure sensor is electrically connected to the controller.

7. The direct cooling system of the charging gun according to claim 1, characterized in that: The conductor comprises a plurality of copper strands.

8. The direct cooling system of the charging gun according to claim 1, characterized in that: The cold liquid pipe is a corrugated flexible metal hose.

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