Liquid cooling system and charging pile

Abstract

The utility model relates to a liquid cooling system and a charging pile. The liquid cooling system comprises an oil storage tank, an oil pump, a liquid inlet block, a liquid return block and heat dissipation equipment. A liquid level observation liquid discharge pipe is detachably connected to the side face of the oil storage tank, and the two ends of the liquid level observation liquid discharge pipe communicate with the oil storage tank. And one end of the oil pump is communicated with the oil storage tank. One end of the liquid inlet block is connected with the oil pump, and the other end of the liquid inlet block is connected with liquid cooling equipment. And one end of the liquid return block is connected with the other end of the liquid cooling equipment. One end of the heat dissipation device communicates with the oil storage tank, and the other end of the heat dissipation device is connected with the other end of the liquid return block. According to the liquid cooling system and the charging pile provided by the utility model, the liquid amount can be checked in time, and liquid can be discharged quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, in particular to a liquid cooling system and a charging pile. Background Art

[0002] With the development of new energy vehicles, the market share of electric vehicles continues to increase, and it is expected that the domestic market demand will continue to rise from 2024 to 2027. In this context, the efficiency of charging has attracted more and more attention, and the attention of high-power charging equipment in the market has continued to increase. The high current of fast charging will quickly increase the temperature of the charging gun wire. Therefore, the market demand for the liquid cooling system that matches it will also continue to increase.

[0003] The existing liquid cooling system and charging gun make it difficult to observe the liquid content in the oil storage tank, and it is easy to drain the liquid in the oil storage tank. The volume is too large, which brings inconvenience during use. Utility Model Content

[0004] The main purpose of the utility model is to provide a liquid cooling system and a charging pile, aiming to solve the technical problems of the current liquid cooling system that it is difficult to observe the liquid content in the oil storage tank, it is difficult to drain the liquid, and the volume is too large.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a liquid cooling system, comprising:

[0006] An oil storage tank, wherein a liquid level observation drain pipe is detachably connected to the side of the oil storage tank, and both ends of the liquid level observation drain pipe are connected to the oil storage tank;

[0007] An oil pump, one end of which is connected to the oil storage tank;

[0008] A liquid inlet block, one end of which is connected to the oil pump, and the other end of which is connected to a liquid cooling device;

[0009] A liquid return block, one end of which is connected to the other end of the liquid cooling device;

[0010] A heat dissipation device, one end of which is communicated with the oil storage tank, and the other end of which is connected with the other end of the liquid return block.

[0011] In one embodiment, the heat dissipation device includes a heat dissipation plate, a housing and a fan, one end of the heat dissipation plate is connected to the liquid return block, and the other end of the heat dissipation plate is connected to the oil storage tank.

[0012] In one embodiment, the outer shell includes a first shell and a second shell, the heat sink is fixed on the first shell, the fan is fixed on the second shell, a ventilation grille is provided on the first surface of the first shell, and a ventilation window is provided on the second shell facing the ventilation grille. The fan is provided on the ventilation window to dissipate heat from the heat sink.

[0013] In one embodiment, the liquid cooling system further comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is disposed on the liquid inlet block, and the second temperature sensor is disposed on the liquid return block.

[0014] And / or, the liquid cooling system further includes a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is disposed on the liquid return block, and the second pressure sensor is disposed on the liquid return block.

[0015] In one embodiment, the liquid cooling system includes a control module, and the first temperature sensor and the second temperature sensor are connected to the control module;

[0016] The control module is configured to increase the speeds of the fan and the oil pump when the first temperature sensor or the second temperature sensor reaches a temperature threshold.

[0017] In one embodiment, the first pressure sensor and the second pressure sensor are connected to the control module;

[0018] The control module is configured to output an alarm signal when a difference between the first pressure sensor and the second pressure sensor reaches a pressure threshold.

[0019] In one embodiment, the liquid cooling device is a liquid-cooled charging gun; the control module is configured so that when the difference between the first pressure sensor and the second pressure sensor reaches a pressure threshold, the fan and the oil pump continue to run until the charging gun stops charging.

[0020] In one embodiment, the liquid cooling system further comprises a first filter device and a second filter device, one end of the first filter device is connected to the oil storage tank, and the other end of the first filter device is connected to the oil pump through an oil pipe;

[0021] One end of the second filter device is connected to the oil storage tank, and the other end of the second filter device is connected to the heat sink through an oil pipe.

[0022] In one embodiment, the liquid cooling system further comprises a liquid level sensor, one end of which extends into the oil storage tank.

[0023] The utility model also provides a charging pile, comprising any of the above-mentioned liquid cooling systems, wherein the liquid cooling device is a charging gun, and the charging gun is connected to the liquid cooling system.

[0024] Compared with the prior art, in a technical solution proposed by the present invention, one end of the oil pump of the liquid cooling system is connected to the oil storage tank; one end of the liquid inlet block is connected to the oil pump, and the other end of the liquid inlet block is connected to the liquid cooling device; one end of the liquid return block is connected to the other end of the liquid cooling device; one end of the heat dissipation device is connected to the oil storage tank, and the other end of the heat dissipation device is connected to the other end of the liquid return block, thereby forming a cooling circuit to cool the liquid cooling device. A liquid level observation drain pipe is detachably connected to the side of the oil storage tank, and both ends of the liquid level observation drain pipe are connected to the oil storage tank, so that it is convenient for users to observe the liquid level status in the oil tank and use it. At the same time, when the liquid level observation drain pipe is pulled out, the liquid in the oil storage tank can flow out through the pipe to achieve the purpose of rapid drainage, so that it is easy to observe the liquid content in the oil storage tank while facilitating drainage and reducing the volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 An exploded view of an embodiment of the liquid cooling system of the utility model;

[0027] Figure 2 A three-dimensional diagram of an embodiment of the liquid cooling system of the utility model;

[0028] Figure 3 A three-dimensional diagram from another perspective of an embodiment of the liquid cooling system of the utility model;

[0029] Figure 4 This is a front view of an embodiment of the liquid cooling system of the utility model;

[0030] Figure 5 for Figure 4 Section view along AA direction;

[0031] Figure 6 for Figure 4 Section along BB direction;

[0032] Figure 7 for Figure 4 Cross-section along CC direction;

[0033] Figure 8 It is a three-dimensional diagram of an embodiment of the first housing of the utility model;

[0034] Fig. 9 It is a three-dimensional diagram of an embodiment of the second housing of the utility model.

[0035] Description of Figure Numbers:

[0036] 100. Liquid cooling system; 1. Oil storage tank; 2. Observation drain pipe; 3. Oil pump; 4. Liquid inlet block; 5. Liquid return block; 6. Heat dissipation device; 61. Heat dissipation plate; 62. Shell; 621. First shell; 6211. First surface; 6212. Ventilation fence; 6213. Base; 6214. First top surface; 6215. First side surface; 6216. Second side surface; 6217. First accommodating groove; 622. Second shell; 6221. Second surface; 6222. Second top surface side; 6223, third side; 6224, fourth side; 6225, ventilation window; 6226, second accommodating groove; 63, fan; 71, first temperature sensor; 72, second temperature sensor; 73, first pressure sensor; 74, second pressure sensor; 75, first filter device; 76, second filter device; 77, liquid level sensor; 78, oil pipe; 79, ventilation cap; 8, control module; 91, quick connector; 92, connector; 93, liquid outlet valve.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] During the charging process of electric vehicles, liquid cooling equipment such as liquid cooling charging guns will generate a lot of heat. In order to quickly remove the heat, a liquid cooling system is often set up to circulate the cooling medium into the liquid cooling charging gun to remove the heat. However, the existing liquid cooling system is not easy to observe the liquid content in the oil storage tank, and it is easy to drain the liquid in the oil storage tank. The volume is too large, which brings inconvenience during use.

[0042] In view of this, an embodiment of the utility model provides a liquid cooling system and a charging pile, which utilizes a detachable liquid level observation drain pipe arranged on the side of the oil storage tank to observe the liquid content in the oil storage tank while facilitating drainage and reducing the volume.

[0043] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0044] like Figure 1 As shown, a liquid cooling system 100 proposed in an embodiment of the utility model includes an oil storage tank 1, a liquid level observation drain pipe 2 is detachably connected to the side of the oil storage tank 1, and both ends of the liquid level observation drain pipe 2 are connected to the oil storage tank 1; an oil pump 3, one end of the oil pump 3 is connected to the oil storage tank 1; a liquid inlet block 4, one end of the liquid inlet block 4 is connected to the oil pump 3, and the other end of the liquid inlet block 4 is connected to a liquid cooling device; a liquid return block 5, one end of the liquid return block 5 is connected to the other end of the liquid cooling device; a heat dissipation device 6, one end of the heat dissipation device 6 is connected to the oil storage tank 1, and the other end of the heat dissipation device 6 is connected to the other end of the liquid return block 5.

[0045] In the technical solution adopted in this embodiment, the liquid cooling device can be a device with liquid cooling requirements such as a liquid-cooled charging gun. The charging gun generates a large amount of heat in the process of charging the electric vehicle. At this time, a liquid cooling system 100 is required to input the coolant into the charging gun. The circulating coolant flowing through the charging gun will take away the heat in the charging gun, so that the charging gun is kept at a safe temperature. The liquid cooling system 100 includes an oil storage tank 1, an oil pump 3, a liquid inlet block 4, a liquid return block 5 and a heat dissipation device 6. The oil storage tank 1 is used to store cooling media, such as cooling oil. The oil pump 3 is used to pressurize the coolant so that it flows into the charging gun and circulates in the charging gun and the liquid cooling system 100. It can be understood that the components of the liquid cooling system 100 and the liquid cooling system 100 and the liquid cooling device are connected by pipes. Preferably, an oil pipe 78 is provided between the oil storage tank 1 and the oil pump 3, one end of the oil pipe 78 is connected to the oil storage tank 1 through a connector 92, and the other end of the oil pipe 78 is connected to the oil pump 3 through a connector 92. The liquid inlet block 4 and the oil pump 3 are connected through a pipeline. Preferably, one end of the liquid inlet block 4 is connected to a connector 92, which is connected to the oil pipe 78, and the other end of the oil pipe 78 is connected to the oil pump 3 through the connector 92. The other end of the liquid inlet block 4 is also connected to a liquid cooling device. Preferably, the other end of the liquid inlet block 4 is connected to a quick connector 91, and the liquid inlet pipe of the liquid cooling device is connected to the quick connector 91. The liquid outlet pipe of the liquid cooling device is connected to the liquid return block 5. Preferably, a quick connector 91 is provided on the liquid return block 5, and the liquid outlet pipe of the liquid cooling device is connected to the quick connector 91. The liquid cooling system 100 also includes a heat dissipation device 6, which is used to dissipate heat and cool the coolant. It can be understood that when the cooling medium enters the liquid cooling device from the oil storage tank 1 through the oil pump 3 and the liquid inlet block 4, the temperature of the cooling medium flowing out of the liquid cooling device is very high because the cooling medium absorbs the heat in the liquid cooling device. In order to cool it, it is necessary to set a heat dissipation device 6 to dissipate heat for the cooling medium. Therefore, the liquid return block 5 is connected to the heat sink through a pipeline to cool the cooling medium. Preferably, a connector 92 is also connected to the liquid return block 5, one end of the oil pipe 78 is connected to the connector 92, and the other end of the oil pipe 78 is connected to the heat sink through the connector 92 to transport the cooling medium flowing out of the liquid cooling device to the heat sink. After the heat sink dissipates the heat of the cooling medium, the cooling medium will be input into the oil storage tank 1 again through the pipeline, so that it will be added to the liquid cooling device by the oil pump 3, and the cycle will be repeated to achieve the circulation cooling of the liquid cooling device. Preferably, the other end of the heat sink is also connected to the connector 92, and the connector 92 is connected to the oil storage tank 1 through the oil pipe 78. It can be understood that in order to facilitate the observation of the cooling medium capacity in the oil storage tank 1, a liquid level observation drain pipe 2 is also provided on the side of the oil storage tank 1, and the two ends of the liquid level observation drain pipe 2 are connected to the oil storage tank 1. Preferably, the liquid level observation drain pipe 2 is made of transparent or translucent material to observe the liquid level more clearly.It is understandable that the liquid level observation drain pipe 2 can extend horizontally or vertically. Preferably, the liquid level observation drain pipe 2 extends vertically along the side wall of the oil storage tank 1, so that the liquid level in a larger range can be observed. It is understandable that the two ends of the liquid level observation drain pipe 2 are connected to the oil storage tank 1 through the quick connector 91, so that the liquid level observation drain pipe 2 can be quickly disassembled. When at least one end of the liquid level observation drain pipe 2 is detached from the oil storage tank 1, the cooling medium in the oil storage tank 1 can be discharged smoothly, so that the liquid level observation drain pipe 2 can not only observe the liquid level, but also discharge the coolant smoothly, killing two birds with one stone while reducing the volume of the oil storage tank 1.

[0046] Preferably, a through hole is further provided on the top of the oil storage tank, and the liquid cooling system 100 further includes a vent cap 79, which covers the through hole.

[0047] Furthermore, in the technical solution adopted by the present invention, the heat dissipation device 6 includes a heat sink 61, a housing 62 and a fan 63, one end of the heat sink 61 is connected to the liquid return block 5, and the other end of the heat sink 61 is connected to the oil storage tank 1.

[0048] It can be understood that one end of the heat sink 61 is connected to the liquid return block 5, and the other end of the heat sink 61 is connected to the oil storage tank 1, so that the heat dissipation area can be increased and the heat dissipation efficiency can be improved. Preferably, the heat sink 61 can be a microchannel heat sink 61. The microchannel heat sink 61 can increase the cooling time of the coolant in the system and increase the heat dissipation.

[0049] Furthermore, in the technical solution adopted in the present invention, the outer shell 62 includes a first shell 621 and a second shell 622, the heat sink 61 is fixed on the first shell 621, the fan 63 is fixed on the second shell 622, a ventilation bar 6212 is provided on the first surface 6211 of the first shell 621, and a ventilation window 6225 is provided on the second shell 622 facing the ventilation bar 6212, and the fan 63 is provided on the ventilation window 6225 to dissipate heat from the heat sink 61.

[0050] It can be understood that the housing 62 is used to fix the heat sink 61, the fan 63 and other equipment. The housing 62 includes a first shell 621 and a second shell 622. Preferably, the first shell 621 includes a base 6213 and a first surface 6211 perpendicular to the base 6213, a ventilation fence 6212 is provided on the first surface 6211, and the heat sink 61 is arranged perpendicular to the base 6213 and parallel to the first surface 6211. In order to better protect the heat sink 61, the first shell 621 is also provided with a first top surface 6214, a first side surface 6215 and a second side surface 6216. The first top surface 6214 is connected to the first surface 6211 and is arranged opposite to the base 6213. The first side surface 6215, the second side surface 6216 are connected to the first surface 6211 and are perpendicular to the base 6213. The first surface 6211, the base 6213, the first top surface 6214, the first side surface 6215, and the second side surface 6216 together form a first accommodating groove 6217, and the heat sink 61 is arranged inside the accommodating groove. The second housing 622 includes a second surface 6221 parallel to the first surface 6211, a second top surface 6222, a third side surface 6223 and a fourth side surface 6224 arranged perpendicular to the second surface 6221, wherein the second top surface 6222 is arranged on the side of the second surface 6221 away from the base 6213, the third side surface 6223 and the fourth side surface 6224 are arranged parallel to each other, the second surface 6221, the second top surface 6222, the third side surface 6223, the fourth side surface 6224 and the base 6213 are surrounded by a second accommodating groove 6226, and a ventilation window 6225 is arranged on the second surface 6221, and a fan 63 is arranged on the ventilation window 6225 to dissipate heat from the heat sink 61. Preferably, the number of the fans 63 is two. Correspondingly, the number of the ventilation windows 6225 is two.

[0051] Furthermore, in the technical solution adopted in the present utility model, the liquid cooling system 100 also includes a first temperature sensor 71 and a second temperature sensor 72, the first temperature sensor 71 is arranged on the liquid inlet block 4, and the second temperature sensor 72 is arranged on the liquid return block 5, and / or, the liquid cooling system 100 also includes a first pressure sensor 73 and a second pressure sensor 74, the first pressure sensor 73 is arranged on the liquid inlet block 4, and the second pressure sensor 74 is arranged on the liquid return block 5.

[0052] It can be understood that by setting a first temperature sensor 71 and / or a first pressure sensor 73 on the liquid inlet block 4 and a second temperature sensor 72 and / or a second pressure sensor 74 on the liquid return block 5, the temperature and pressure of the cooling medium flowing into and out of the liquid cooling device can be obtained in real time.

[0053] Furthermore, in the technical solution adopted in the present utility model, the liquid cooling system 100 includes a control module 8, and the first temperature sensor 71 and the second temperature sensor 72 are connected to the control module 8; the control module 8 is configured to increase the speed of the fan 63 and the oil pump 3 when the first temperature sensor 71 or the second temperature sensor 72 reaches a temperature threshold.

[0054] It can be understood that by connecting the control module 8 with the first temperature sensor 71 and the second temperature sensor 72 , the control module 8 can control the rotation speeds of the fan 63 and the oil pump 3 according to the temperatures transmitted by the first temperature sensor 71 and the second temperature sensor 72 .

[0055] Furthermore, in the technical solution adopted in the present utility model, the first pressure sensor 73 and the second pressure sensor 74 are connected to the control module 8; the control module 8 is configured to output an alarm signal when the difference between the first pressure sensor 73 and the second pressure sensor 74 reaches a pressure threshold.

[0056] It can be understood that by connecting the control module 8 with the first pressure sensor 73 and the second pressure sensor 74 , the control module 8 can output an alarm signal according to the pressure transmitted by the first pressure sensor 73 and the second pressure sensor 74 .

[0057] Furthermore, in the technical solution adopted in the present invention, the liquid cooling device is a liquid-cooled charging gun; the control module 8 is configured so that when the difference between the first pressure sensor 73 and the second pressure sensor 74 reaches a pressure threshold, the fan 63 and the oil pump 3 continue to operate until the charging gun stops charging.

[0058] It is understandable that when the difference between the first pressure sensor 73 and the second pressure sensor 74 reaches the pressure threshold, it means that the pressure of the liquid cooling system 100 is too high. In order not to damage the liquid cooling equipment, the speed of the fan 63 and the oil pump 3 will not stop immediately, but continue to run at the existing speed and output an alarm signal. After charging stops, the liquid cooling system 100 stops running. At the same time, the host computer system developed in conjunction with the control system has the function of outputting information such as temperature and pressure in real time, which is convenient for users to observe and use.

[0059] Furthermore, the liquid cooling system 100 also includes a first filter device 75 and a second filter device 76, one end of the first filter device 75 is connected to the oil storage tank 1, and the other end of the first filter device 75 is connected to the oil pump 3 through an oil pipe 78; one end of the second filter device 76 is connected to the oil storage tank 1, and the other end of the second filter device 76 is connected to the heat sink 61 through an oil pipe 78.

[0060] It is understandable that in order to improve the service life of the device, the oil is filtered through a filter before entering the oil pump 3 and returning to the oil storage tank 1, so as to reduce the content of impurities in the coolant in the liquid cooling system 100 and prevent the oil pump 3 from being damaged. Preferably, an oil pipe 78 is provided between the oil storage tank 1 and the oil pump 3, one end of the oil pipe 78 is connected to one end of the first filter device 75, the other end of the first filter device 75 is connected to the oil storage tank 1 through a connector 92, and the other end of the oil pipe 78 is connected to the oil pump 3 through the connector 92. Preferably, the heat dissipation device and the oil storage tank 1 are connected through the oil pipe 78, and a connector 92 is provided on the heat dissipation device. The connector 92 is connected to one end of the oil pipe 78, and the other end of the oil pipe 78 is connected to one end of the second filter device 76, and the other end of the second filter device 76 is connected to the oil storage tank 1. Preferably, the liquid cooling system 100 also includes a liquid outlet valve 93, which is provided between the second filter device 76 and the oil storage tank 1.

[0061] Furthermore, the liquid cooling system 100 further includes a liquid level sensor 77 , one end of which extends into the oil storage tank 1 .

[0062] It can be understood that the liquid level sensor 77 can obtain the content of the coolant in the oil storage tank 1 in real time. Preferably, the liquid level sensor 77 is connected to the control module 8, and when the liquid level sensor 77 transmits an abnormal liquid level signal, an alarm signal can be triggered. Preferably, the host computer system developed in conjunction with the control system has the function of real-time liquid level and other information, which is convenient for users to observe and use.

[0063] The embodiment of the utility model further proposes a charging pile, which includes the above liquid cooling system 100, wherein the liquid cooling device is a charging gun, and the charging gun is connected to the liquid cooling system 100. Specifically, the specific structure of the liquid cooling system 100 refers to the above embodiment, and since the liquid cooling system 100 adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0064] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquid cooling system (100), characterized in that: The liquid cooling system (100) comprises: An oil storage tank (1), wherein a liquid level observation drain pipe (2) is detachably connected to a side of the oil storage tank (1), and both ends of the liquid level observation drain pipe (2) are connected to the oil storage tank (1); An oil pump (3), one end of the oil pump (3) being in communication with the oil storage tank (1); A liquid inlet block (4), one end of the liquid inlet block (4) is connected to the oil pump (3), and the other end of the liquid inlet block (4) is connected to a liquid cooling device; A liquid return block (5), one end of the liquid return block (5) being connected to the other end of the liquid cooling device; A heat dissipation device (6), one end of the heat dissipation device (6) is connected to the oil storage tank (1), and the other end of the heat dissipation device (6) is connected to the other end of the liquid return block (5).

2. The liquid cooling system (100) according to claim 1, characterized in that: The heat dissipation device (6) comprises a heat dissipation plate (61), a housing (62) and a fan (63); one end of the heat dissipation plate (61) is connected to the liquid return block (5), and the other end of the heat dissipation plate (61) is connected to the oil storage tank (1).

3. The liquid cooling system (100) according to claim 2, characterized in that: The housing (62) comprises a first shell (621) and a second shell (622); the heat sink (61) is fixed on the first shell (621); the fan (63) is fixed on the second shell (622); a ventilation grille (6212) is provided on the first surface (6211) of the first shell (621); the second shell (622) is provided with a ventilation window (6225) facing the ventilation grille (6212); the fan (63) is provided on the ventilation window (6225) to dissipate heat from the heat sink (61).

4. The liquid cooling system (100) according to claim 3, characterized in that: The liquid cooling system (100) further comprises a first temperature sensor (71) and a second temperature sensor (72), wherein the first temperature sensor (71) is arranged on the liquid inlet block (4), and the second temperature sensor (72) is arranged on the liquid return block (5). And / or, the liquid cooling system (100) further comprises a first pressure sensor (73) and a second pressure sensor (74), wherein the first pressure sensor (73) is arranged on the liquid return block (5), and the second pressure sensor (74) is arranged on the liquid return block (5).

5. The liquid cooling system (100) according to claim 4, characterized in that: The liquid cooling system (100) comprises a control module (8), and the first temperature sensor (71) and the second temperature sensor (72) are connected to the control module (8); The control module (8) is configured to increase the rotation speed of the fan (63) and the oil pump (3) when the first temperature sensor (71) or the second temperature sensor (72) reaches a temperature threshold.

6. The liquid cooling system (100) according to claim 5, characterized in that: The first pressure sensor (73) and the second pressure sensor (74) are connected to the control module (8); The control module (8) is configured to output an alarm signal when the difference between the first pressure sensor (73) and the second pressure sensor (74) reaches a pressure threshold.

7. The liquid cooling system (100) according to claim 6, characterized in that: The liquid cooling device is a liquid cooling charging gun; the control module (8) is configured such that when the difference between the first pressure sensor (73) and the second pressure sensor (74) reaches a pressure threshold, the fan (63) and the oil pump (3) continue to operate until the charging gun stops charging.

8. The liquid cooling system (100) according to claim 1, characterized in that: The liquid cooling system (100) further comprises a first filter device (75) and a second filter device (76), one end of the first filter device (75) being in communication with the oil storage tank (1), and the other end of the first filter device (75) being connected to the oil pump (3) via an oil pipe (78); One end of the second filter device (76) is connected to the oil storage tank (1), and the other end of the second filter device (76) is connected to the heat sink (61) via an oil pipe (78).

9. The liquid cooling system (100) according to claim 1, characterized in that: The liquid cooling system (100) further comprises a liquid level sensor (77), one end of the liquid level sensor (77) extending into the oil storage tank (1).

10. A charging pile, characterized in that: The charging pile comprises the liquid cooling system (100) as claimed in any one of claims 1 to 9, and the liquid cooling device is a charging gun, and the charging gun is connected to the liquid cooling system (100).

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