New energy automobile charging gun with heat dissipation structure

Abstract

A new energy automobile charging gun with a heat dissipation structure comprises a gun body shell and a gun head shell, at least two groups of power terminals are arranged in the gun body shell, each group of power terminals comprises a high-voltage wire connecting terminal end and a quick-change terminal, the power terminals are sleeved with the heat dissipation structure, and the heat dissipation structure is made of elastic materials. The heat dissipation structure is located on the inner side of the gun body shell and is in interference fit with the gun body shell and the power terminal. Compared with the prior art, the technical effects of the utility model are that the heat dissipation ring is arranged, so that heat can be quickly transmitted to the shell from the power terminal, the temperature of the power terminal is reduced, and the power terminal is protected.

Description

Technical Field

[0001] The utility model discloses a new energy vehicle charging gun provided with a heat dissipation structure. Background Art

[0002] There are power terminals in the charging gun of new energy vehicles, for example, the power terminal 20 disclosed in the Chinese patent document CN220086456U. The power terminal is easy to generate heat. If the heat cannot be dissipated in time, the power terminal will be burned faster, and long-term use will affect the service life of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to design a new energy vehicle charging gun provided with a heat dissipation structure to facilitate heat dissipation.

[0004] The technical solution of the utility model is specifically as follows:

[0005] A new energy vehicle charging gun with a heat dissipation structure comprises a gun body shell and a gun head shell. At least two groups of power terminals are arranged in the gun body shell. Each group of power terminals comprises a high-voltage line terminal end and a quick-change terminal. A heat dissipation structure is arranged outside the power terminal. The heat dissipation structure is made of elastic material and is located on the inner side of the gun body shell. The heat dissipation structure, the gun body shell and the power terminal are all interference fit.

[0006] The rear of the gun head shell is the gun head base, the rear of the gun head base is the clamping plate, the heat dissipation structure is a heat dissipation ring, and in the radial direction, the heat dissipation ring is clamped between the power terminal and the gun body shell.

[0007] A positioning groove is provided at the bottom of the heat sink, and the positioning groove extends along the axial direction of the heat sink. A blocking part is provided at the bottom of the inner wall of the gun body shell, and the blocking part is a positioning blocking column. The outer end surface of the positioning blocking column contacts the bottom of the positioning groove.

[0008] The inner wall of the gun body shell is provided with a retaining column on both side surfaces. The upper surface of the heat sink is high in the middle and low on both sides. Two steps are formed on both sides of the upper surface. The retaining column contacts the corresponding steps of the heat sink.

[0009] In the axial direction, the heat dissipation ring is sandwiched between the gun head base and the blocking portion of the gun body shell.

[0010] The heat dissipation ring is columnar, and a plurality of grooves are distributed on its outer surface.

[0011] The rear end of the heat sink can completely wrap the welding area or the crimping area of ​​the rear end of the power terminal.

[0012] The heat sink is made of rubber.

[0013] Compared with the prior art, the technical effect of the utility model is that the utility model is provided with a heat dissipation ring, which can quickly transfer heat from the power terminal to the housing, thereby reducing the temperature of the power terminal and protecting the power terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model.

[0015] Figure 2 It is an exploded schematic diagram of the utility model.

[0016] Figure 3 It is the left side schematic diagram of the heat sink.

[0017] Figure 4 A schematic diagram of the housing.

[0018] Figure 5 It is a three-dimensional schematic diagram of the heat dissipation ring. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1-2 A new energy vehicle charging gun with a heat dissipation structure includes a gun body shell 10 and a gun head shell 11. At least two groups of power terminals are arranged in the gun body shell 10, and each group of power terminals includes a high-voltage line terminal 20 and a quick-change terminal 21. A heat dissipation structure is arranged outside the power terminal. The heat dissipation structure is an elastic material, which is located on the inner side of the gun body shell 10, and the heat dissipation structure, the gun body shell 10 and the power terminal are all interference fit.

[0021] like Figure 1-3 In order to facilitate heat dissipation, the rear of the gun head shell 11 is a gun head base 23, and the rear of the gun head base 23 is a clamping plate 22. The clamping plate 22 includes a terminal isolation plate 221, and the terminal isolation plate 221 is located between the two groups of power terminals. The heat dissipation structure is a heat dissipation ring 30. In the radial direction, the heat dissipation ring 30 is clamped between the power terminal and the gun body shell 10.

[0022] like Figure 2-4 For the sake of firmness, in the axial direction, the heat sink 30 is sandwiched between the gun head base 23 and the blocking portion of the gun body shell 10. When the gun head shell 11 is fixed to the gun body shell 10, the gun head shell 11 presses the heat sink 30 on the blocking portion of the gun body shell 10 through the gun head base 23 and the clamping plate 22, providing bidirectional constraints in the axial direction, which is relatively firm.

[0023] like Figure 3 In order to facilitate elastic deformation, the heat dissipation ring 30 is columnar, and a plurality of grooves 301 are distributed on its outer surface.

[0024] like Figure 4-5 A positioning groove 303 is provided at the bottom of the heat sink 30, and the positioning groove 303 extends along the axial direction of the heat sink 30. A blocking portion is provided at the bottom of the inner wall of the gun body shell 10, and the blocking portion is a positioning blocking column 101. The outer end surface 1011 of the positioning blocking column 101 contacts the groove bottom 3031 of the positioning groove 303 to realize the axial positioning of the heat sink 30.

[0025] like Figure 4-5 The inner wall of the gun body shell 10 is provided with a locking column 102 on both side surfaces. The upper surface of the heat sink 30 is high in the middle and low on both sides. Two steps 302 are formed on both sides of its upper surface. The locking column 102 contacts the corresponding steps 302 of the heat sink 30 to limit the rotation of the heat sink 30 in the gun body shell 10.

[0026] The heat sink 30 is long enough so that its rear end can completely wrap around the rear end of the power terminal. Figure 2 The welding area or crimping area of ​​the end (right side in the figure).

[0027] In order to prevent the gun body housing 10 from being electrically connected to the power terminal, the heat sink 30 is made of rubber material.

[0028] Its working principle is:

[0029] When powered on, the heat generated by the power terminal is transferred to the conductive gun body shell 10 through the heat dissipation ring 30. The gun body shell 10 has a large area and is exposed to the air, so it can transfer its own heat to the outside. In this way, the heat generated by the power terminal is easily transferred to the outside, and its own temperature drops.

[0030] Features of this application:

[0031] S1. The heat sink 30 acts as a heat medium to achieve a temperature drop of the power terminal itself.

[0032] S2. The heat sink is compressed in both the axial and radial directions, which facilitates heat transfer and is also very strong.

[0033] S3. The locking column 102 is in contact with the step 302 corresponding to the heat dissipation ring 30, so that the heat dissipation ring 30 is not easy to rotate.

[0034] S4. The heat dissipation ring 30 is made of rubber material to prevent leakage.

[0035] S5. The heat sink can provide radial support for the power terminal, making the power terminal more secure.

[0036] It should be noted that:

[0037] The utility model provides a heat-conducting structure for a charging gun. The heat-conducting material is elastic material. The interference amount and the interference fit are utilized. The power terminal welding area is tightly wrapped inside and the outside is tightly attached to the gun shell. The heat generated by power-on is introduced into the gun shell through the heat-conducting structure. The outer surface of the gun shell is in contact with the air to assist in heat dissipation.

[0038] The heat-conducting structure passes through the power line and power terminal of the charging gun and fits tightly against the power terminal in an interference fit state. When charging, there is contact resistance on the welding surface, which will generate heat. The greater the current, the higher the heat. There is a heat-conducting mechanism, and the heat is transferred to the heat-conducting mechanism. The heat-conducting mechanism is close to the gun shell. The gun shell is the outermost component in contact with the air. It has a wide heat dissipation surface and a high air circulation coefficient. The heat is finally transferred to the gun shell through the heat-conducting mechanism. The gun shell is in contact with the external space. Due to the air circulation, the heat dissipation efficiency is good and is much better than the sealed space inside the gun shell, thereby achieving the effect of reducing the temperature rise and solving the problems of ablation, charging stop and gun jumping caused by excessive temperature of the charging gun.

[0039] The present invention has the following effects: when charging, a large amount of heat is generated by the contact resistance of the welding area, which is conducted to the rear of the power terminal and then to the heat conducting mechanism, which is then conducted to the gun housing. The large amount of heat generated is taken away through the circulation of external air, so that the charging gun is not easily burned out or the gun jumps and stops charging. Therefore, the charging current can be designed to be a large current, thereby speeding up the charging efficiency.

[0040] For other contents, please refer to the prior art.

[0041] The above-described embodiments are only preferred embodiments of the present invention. It should be noted that those skilled in the art may make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as within the protection scope of the present invention.

Claims

1. A new energy vehicle charging gun with a heat dissipation structure, comprising a gun body shell (10) and a gun head shell (11), wherein at least two groups of power terminals are arranged in the gun body shell (10), each group of power terminals comprises a high voltage line terminal end (20) and a quick-change terminal (21), characterized in that: The power terminal is provided with a heat dissipation structure outside. The heat dissipation structure is made of elastic material and is located inside the gun body shell (10). The heat dissipation structure, the gun body shell (10) and the power terminal are all interference fit.

2. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 1, characterized in that: In the axial direction, the heat dissipation ring (30) is sandwiched between the gun head base (23) and the blocking portion of the gun body shell (10).

3. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 2, characterized in that: The rear of the gun head shell (11) is a gun head base (23), the rear of the gun head base (23) is a clamping plate (22), and the heat dissipation structure is a heat dissipation ring (30). In the radial direction, the heat dissipation ring (30) is clamped between the power terminal and the gun body shell (10).

4. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 3, characterized in that: A positioning groove (303) is provided at the bottom of the heat dissipation ring (30), and the positioning groove (303) extends along the axial direction of the heat dissipation ring (30). A blocking portion is provided at the bottom of the inner wall of the gun body shell (10), and the blocking portion is a positioning blocking column (101). The outer end surface (1011) of the positioning blocking column (101) contacts the groove bottom (3031) of the positioning groove (303).

5. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 3, characterized in that: The inner wall of the gun body shell (10) is provided with a locking column (102) on both side surfaces. The upper surface of the heat dissipation ring (30) is high in the middle and low on both sides. Two steps (302) are formed on both sides of the upper surface. The locking column (102) contacts the corresponding steps (302) of the heat dissipation ring (30).

6. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 1, characterized in that: The heat dissipation ring (30) is columnar, and a plurality of grooves (301) are distributed on its outer surface.

7. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 1, characterized in that: The rear end of the heat dissipation ring (30) can completely wrap the welding area or the crimping area of ​​the rear end of the power terminal.

8. The new energy vehicle charging gun with a heat dissipation structure as claimed in claim 1, characterized in that: The heat dissipation ring (30) is made of rubber material.

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