Water tank assembled on charging terminal

Abstract

The water tank assembled on the charging terminal comprises a water tank shell, a sealing ring, a clamping spring, a shaft sleeve and a fixing piece, a circulating cavity is formed in the water tank shell, the water tank shell is provided with at least two water pipe insertion holes, water pipes are inserted into the water pipe insertion holes respectively, annular grooves are formed in the water pipe insertion holes, and the sealing ring is arranged in the annular grooves. The sealing ring is embedded in the annular groove and arranged on the outer wall of the water pipe in a sleeving mode, the clamping spring and the shaft sleeve are arranged on the water pipe in a sleeving mode, the clamping spring is arranged between the shaft sleeve and the water tank shell, and the fixing piece is installed on the outer side of the shaft sleeve and fixedly connected with the water tank shell. The sealing performance between the water pipe and the water pipe inserting hole is effectively improved through the arranged sealing ring, the charging-free terminal is effectively prevented from falling off from the water pipe in the long-term dragging and using process through the arranged clamping spring, meanwhile, the structure is simple, the assembling procedure of the water pipe is simplified, only the fixing piece needs to be disassembled, and the water pipe can be conveniently and rapidly assembled. The water pipe joint can be quickly replaced, and maintainability between the water pipe connector and the water tank shell is achieved.

Description

Technical Field

[0001] This utility model relates to electric vehicle charging equipment, and more specifically, to a water tank mounted on a charging terminal. Background Technology

[0002] With the increasing popularity of electric vehicles and the continuous improvement of battery capacity, how to rapidly increase battery charging speed has become an urgent problem to be solved. Existing technologies use high-power DC fast charging equipment to quickly charge batteries. However, the continuous high-current charging process leads to a large amount of heat accumulation at the charging terminals. When the temperature is too high, it will slow down the charging efficiency and, in severe cases, cause explosions, resulting in serious accidents involving life and property. To solve the problem of heat dissipation at the charging terminals, existing technologies often use changes to the materials of the charging terminals and intelligent temperature monitoring and control to prevent the charging terminals from overheating. However, this method can only indirectly regulate the heat generation problem of the charging terminals and cannot substantially solve the problem. To substantially solve the heat generation problem, existing technologies often use air-cooled charging terminals. Although this method can solve the heat generation problem to a certain extent, the heat dissipation efficiency of air cooling is insufficient during high-efficiency charging, leading to heat accumulation. Its heat dissipation efficiency is limited, and its operating noise is relatively high. The heat dissipation effect is not obvious in high-temperature environments, and dust is easy to accumulate under long-term operation, which reduces the heat dissipation effect and further increases the risk of heat accumulation. Therefore, existing technologies often use water-cooled charging terminals, which cool the charging terminals by means of cooling water. However, some charging terminals are prone to leakage at the connection between the cooling pipe and the charging terminal during long-term dragging use, and the water-cooling structure of some charging terminals is complex and has poor maintainability. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art and provides an embodiment of a water tank assembled on a charging terminal, which is expected to solve the problems that the connection between the water-cooled charging terminal and the water pipe is prone to coolant leakage during long-term use or that the existing water-cooled charging terminal has a complex structure that leads to poor maintainability.

[0004] To solve the above-mentioned technical problems, one embodiment of this utility model adopts the following technical solution:

[0005] A water tank mounted on a charging terminal includes a water tank shell, a sealing ring, a retaining ring, a bushing, and a fixing member. A circulation cavity is formed inside the water tank shell. The water tank shell has at least two water pipe insertion holes, into which water pipes are inserted respectively. An annular groove is provided in the water pipe insertion hole. The sealing ring is embedded in the annular groove and sleeved on the outer wall of the water pipe. The retaining ring and the bushing are both sleeved on the water pipe. The retaining ring is located between the bushing and the water tank shell. The fixing member is installed on the outside of the bushing and is fixedly connected to the water tank shell.

[0006] Furthermore, the retaining spring of the water tank assembled on the charging terminal is a circular toothed elastic element.

[0007] The retaining ring has an outer bevel and an inner bevel. The water pipe insertion hole on the water tank shell has a first protective bevel, which contacts the outer bevel. The end of the bushing near the retaining ring has a second protective bevel, which contacts the inner bevel. The first and second protective bevels cooperate to clamp and fix the retaining ring, and the elastic teeth of the retaining ring clamp and fix the water pipe.

[0008] Furthermore, the water tank housing assembled on the charging terminal has a partition that divides the cavity inside the water tank housing into a first cavity and a second cavity. The first cavity and the second cavity are connected at the end away from the water pipe socket to form a circulation cavity.

[0009] Furthermore, the end of the bushing of the water tank mounted on the charging terminal near the retaining ring has a flange, and the fastener has countersunk holes matching the number of water pipes, with the bottom of the countersunk holes fitting against the flange surface.

[0010] Furthermore, the fixing member of the water tank assembled on the charging terminal has a fixing through hole, and the water tank shell has a threaded hole at the corresponding position of the fixing through hole. The elastic washer screw passes through the fixing through hole and connects with the threaded hole to fix the water tank shell and the fixing member.

[0011] Optionally, the water tank housing mounted on the charging terminal has four water pipe insertion holes, two of which serve as water inlets and the other two as water outlets.

[0012] Optionally, the water tank housing mounted on the charging terminal has multiple sets of the circulation chambers.

[0013] Optionally, the water pipe socket of the water tank mounted on the charging terminal is provided with a plurality of annular grooves, and a sealing ring is embedded in each annular groove.

[0014] Furthermore, the exterior of the water tank housing, which is mounted on the charging terminal, has multiple mounting holes.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention effectively improves the sealing performance between the water pipe and the water pipe socket by setting a sealing ring, and effectively prevents the charging terminal from falling off the water pipe during long-term dragging and use by setting a snap ring. At the same time, the present invention has a simple structure, which simplifies the water pipe assembly procedure. Only the fastener needs to be disassembled to achieve quick replacement of the water pipe connection, and realizes the maintainability between the water pipe joint and the water tank shell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the water tank assembly state of this utility model;

[0017] Figure 2 This is an exploded view of the water tank structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the water tank of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the water pipe insertion hole of this utility model;

[0020] Figure 5 This is a schematic diagram of the water tank shell of this utility model;

[0021] Figure 6 This is a schematic diagram of the snap ring structure of this utility model;

[0022] The numbers in the diagram are as follows: 1. Water tank shell; 101. Water pipe insertion hole; 102. Partition plate; 103. First protective bevel; 104. Fixing hole; 105. Threaded hole; 2. Fastener; 201. Through hole; 202. Fixing through hole; 3. Bushing; 301. Second protective bevel; 302. Flange; 4. Sealing ring; 401. Annular groove; 5. Snap ring; 501. Outer bevel; 502. Inner bevel; 503. Elastic tooth; 6. Water pipe; 7. Elastic washer screw. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0024] Example 1

[0025] like Figures 1-3As shown: A water tank assembled on a charging terminal includes a water tank shell 1, a sealing ring 4, a retaining ring 5, a bushing 3, and a fixing member 2. The water tank shell 1 is a cooling medium cavity, and a partition 102 is provided inside the cavity to divide the cavity into a first cavity and a second cavity. The water tank shell 1 has four water pipe insertion holes 101, two of which are connected to the first cavity as water inlets, and the other two are connected to the second cavity as water outlets. Water pipes 6 are inserted into the water inlets and outlets respectively. The first cavity and the second cavity are connected at the end away from the water pipe insertion holes 101 to form a circulation cavity, so that the cooling medium can flow from the first cavity into the second cavity. The two chambers circulate water through pipes and a pump. An annular groove 401 is provided inside the water pipe insertion hole 101, and a sealing ring 4 is embedded in the annular groove 401 and fitted onto the outer wall of the water pipe 6. The sealing ring 4 seals the water pipe insertion hole 101 and the outer wall of the water pipe 6, preventing refrigerant leakage. A retaining ring 5 and a bushing 3 are both fitted onto the water pipe 6. The retaining ring 5 is fitted between the bushing 3 and the water tank shell 1. A fixing member 2 is installed on the outside of the bushing 3 and is fixedly connected to the water tank shell 1. The fixing member 2 limits and fixes the bushing 3, the bushing 3 limits and fixes the retaining ring 5, and the retaining ring 5 limits and fixes the water pipe 6, thus preventing the water pipe from falling off. The water tank shell 1 is fixedly connected to the charging terminal. The refrigerant circulates through the inlet pipe, the circulation chamber, and the outlet pipe, cooling the water tank shell 1. The refrigerant absorbs the heat generated by the charging terminal, achieving the purpose of cooling the charging terminal.

[0026] More specifically, the snap ring 5 is a ring-shaped toothed elastic element (such as...). Figure 6 As shown), it has an outer inclined surface 501 and an inner inclined surface 502, and its elastic teeth 503 tighten towards the center to form a cone shape when not under force; as Figure 4 As shown: The water pipe insertion hole 101 of the water tank shell 1 has a first protective angle 103, which contacts the outer inclined surface 501 of the retaining spring 5; the end of the bushing 3 near the retaining spring 5 has a second protective angle 301, which contacts the inner inclined surface 502 of the retaining spring 5; the first protective angle 103 and the second protective angle 301 cooperate to clamp and fix the retaining spring 5. During the dragging of the water pipe 6, the elastic teeth 503 of the retaining spring 5 are subjected to force to clamp and fix the water pipe 6, thereby ensuring that the water pipe 6 will not fall off due to dragging or other reasons during use.

[0027] The end of the bushing 3 near the retaining ring 5 has a flange 302. The fastener 2 has through holes 201 matching the number of water pipes 6. These through holes 201 are countersunk holes, and the bottom of the countersunk holes 201 fits against the flange 302 of the bushing 3, thus limiting the fastener 2 when it is installed on the water tank shell 1. The fastener 2 also has a fixing through hole 202, and the water tank shell 1 has a threaded hole 105 at the corresponding position of the fixing through hole 202. During installation, the elastic washer screw 7 passes through the fixing through hole 202 and connects to the threaded hole 105, realizing the fixed connection between the water tank shell 1 and the fastener 2. The fastener 2 limits and fixes the flange 302 of the bushing 3, thereby limiting and fixing the retaining ring 5. The exterior of the water tank shell 1 also has multiple fixing mounting holes 104 (such as... Figure 5 As shown, the water tank housing 1 is fixedly connected to the charging gun through the fixed mounting hole 104.

[0028] The water tank shell 1 is installed inside the charging gun and fixedly connected to the charging terminal. Its inlet and outlet pipes are connected to the refrigerant pump. The refrigerant can be liquid refrigerant such as coolant or clean water. During the charging process of the charging terminal, when the temperature of the charging terminal is high, the refrigerant pump starts and pumps the refrigerant to the inlet pipe. The refrigerant enters the circulation chamber of the water tank through the inlet pipe and cools the water tank shell 1. The refrigerant goes to the refrigerant tank through the outlet pipe for further cooling. The refrigerant circulates rapidly to physically cool the charging terminal, ensuring that the charging terminal is in a safe operating condition.

[0029] Example 2

[0030] This embodiment is basically the same as embodiment 1, except that: the water tank shell 1 has multiple sets of circulation chambers, which accelerate the physical cooling of the charging terminals to keep the charging terminals in the best working condition.

[0031] Example 3

[0032] This is basically the same as Example 1, except that: multiple annular grooves 401 are provided in the water pipe insertion hole 101. By embedding sealing rings 4 in multiple sets of annular grooves 401, the outer wall of the water pipe 6 and the water pipe insertion hole 101 are further sealed to prevent the sealing effect of a certain sealing ring 4 from being lost during long-term use and causing a safety accident.

[0033] Example 4

[0034] There are only two water pipe insertion holes 101, one of which is a water inlet and the other is a water outlet. Everything else is the same as in Example 1.

[0035] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A water tank assembled on a charging terminal, characterized by: The utility model provides a water tank shell (1), sealing ring (4), snap spring (5), shaft sleeve (3), fixed part (2), form circulating cavity in water tank shell, water tank shell (1) has at least two water pipe insertion hole (101), water pipe insertion hole (101) respectively inserts water pipe (6) in, water pipe insertion hole (101) is equipped with annular groove (401), sealing ring (4) is inlayed in annular groove (401) and is set on the outer wall of water pipe (6), snap spring (5), shaft sleeve (3) are all set on water pipe (6), snap spring (5) sets up between shaft sleeve (3) and water tank shell (1), fixed part (2) is installed on the outside of shaft sleeve (3), and fixed part (2) is fixedly connected with water tank shell (1).

2. The water tank assembled on the charging terminal according to claim 1, characterized in that: The snap spring (5) is a circular ring-shaped toothed elastic member.

3. The water tank assembled on the charging terminal according to claim 2, characterized in that: The water tank shell (1) has a first protection bevel (103) on the water pipe insertion hole (101), and the first protection bevel (103) is in contact with the outer inclined surface (501). The end of the shaft sleeve (3) near the snap spring (5) has a second protection bevel (301), and the second protection bevel (301) is in contact with the inner inclined surface (502). The first protection bevel (103) and the second protection bevel (301) cooperate to clamp and fix the snap spring (5). The elastic teeth (503) of the snap spring (5) clamp and fix the water pipe (6).

4. The water tank assembled on the charging terminal according to claim 1, characterized in that: The water tank shell (1) has a partition (102) therein, which divides the cavity in the water tank shell (1) into a first cavity and a second cavity. The first cavity and the second cavity are communicated at an end away from the water pipe insertion hole (101) to form a circulating cavity.

5. The water tank assembled on the charging terminal according to claim 1, characterized in that: The end of the shaft sleeve (3) near the snap spring (5) has a flange (302). The fixed part (2) has a number of countersunk perforations (201) corresponding to the number of water pipes (6). The bottom of the countersunk hole of the perforation (201) is in contact with the disc surface of the flange (302).

6. The water tank assembled on the charging terminal according to claim 1, characterized in that: The fixed part (2) has a fixed through hole (202), and the water tank shell (1) has a threaded hole (105) at a position corresponding to the fixed through hole (202). An elastic washer screw (7) passes through the fixed through hole (202) and is connected with the threaded hole, thereby fixedly connecting the water tank shell (1) and the fixed part (2).

7. The water tank assembled on the charging terminal according to claim 1, characterized in that: The water tank shell (1) has four water pipe insertion holes (101), two of which are used as water inlet holes, and the other two are used as water outlet holes.

8. The water tank assembled on the charging terminal according to claim 1, characterized in that: The water tank shell (1) has a plurality of groups of circulating cavities therein.

9. The water tank assembled on the charging terminal according to claim 1, characterized in that: The water pipe insertion hole (101) is provided with a plurality of annular grooves (401), and each annular groove (401) is inlaid with a sealing ring (4).

10. The water tank assembled on the charging terminal according to claim 1, characterized in that: The water tank shell (1) has a plurality of fixed mounting holes (104) on the outside.

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