Charging protocol converter for electric vehicle

Abstract

An electric automobile charging protocol converter relates to the technical field of electric automobile charging and comprises an upper shell, a lower shell, a circuit board, a sealing strip and a ventilation valve. An annular groove is formed in the lower surface of the upper shell, and at least part of the sealing strip is arranged in the groove; the circuit board is arranged in the upper shell; the upper shell is provided with an inwards-sunken mounting part, and a through hole is formed in the mounting part; the ventilation valve penetrates through the through hole and is arranged on the mounting part; the upper shell is detachably connected with the lower shell, and the lower shell is provided with a protrusion suitable for being inserted into the groove. The sealing strip is arranged in the groove of the upper shell, the bulge is arranged on the upper surface of the lower shell, the bulge is matched with the groove, and the bulge is pressed into the groove to extrude the sealing strip to deform, so that an excellent sealing effect can be achieved, water or dust is effectively prevented from entering the cavity, the circuit board is protected from being damaged, and the service life of the circuit board is prolonged. And the upper shell is provided with the ventilation valve to ventilate the cavity, so that the air pressure balance in the cavity is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle charging, in particular to an electric vehicle charging protocol converter. Background Art

[0002] The electric vehicle charging protocol converter (EVCC) is mainly used for the conversion between different charging communication protocols of national standard electric vehicles. After application, the national standard charging system can be directly converted to the communication standards of European standard / American standard / Japanese standard, so that new energy charging products such as national standard electric vehicles / charging piles / battery power supplies can be quickly introduced to the international market with simple matching and installation. In order to protect the internal electronic devices, the sealing requirements of EVCC are extremely strict. When EVCC is working, the internal circuit board and the electronic devices connected to it will heat up. The temperature fluctuation will cause the working environment of the electronic devices to be over-pressure or negative pressure. The pressure difference between the internal and external environments will have a negative impact on the electronic devices, causing them to deform or damage. Therefore, a new solution that simultaneously solves the sealing and ventilation problems of EVCC is urgently needed in the prior art. Utility Model Content

[0003] The utility model provides an electric vehicle charging protocol converter, comprising: an upper shell, a lower shell, a circuit board, a sealing strip and a breathable valve;

[0004] The lower surface of the upper shell has an annular groove, and the sealing strip is at least partially arranged in the groove;

[0005] The circuit board is arranged in the upper housing;

[0006] The upper shell has an inwardly recessed mounting portion, and the mounting portion has a through hole;

[0007] The air-permeable valve is arranged on the mounting portion through the through hole;

[0008] The upper shell is detachably connected to the lower shell, and the lower shell has a protrusion suitable for inserting into the groove.

[0009] The sealing strip is annular in shape and at least partially protrudes from the groove, and the outer edge of the groove is higher than the inner edge of the groove.

[0010] It also includes a plug-in interface, which extends into the upper shell and is electrically connected to the circuit board.

[0011] The plug-in interface is sealed and connected to the upper shell.

[0012] A fixing column is arranged in the upper shell, and the circuit board is screwed on the fixing column.

[0013] The mounting portion is arranged on a side surface of the upper shell, and the air-permeable valve does not protrude from the side surface of the upper shell.

[0014] The lower surface of the mounting portion gradually slopes downward from being close to the through hole to being away from the through hole.

[0015] The lower shell has a positioning column, and the positioning column has a threaded hole. The upper shell has a positioning ring, and the positioning ring is sleeved on the positioning column. The bolt passes through the positioning ring and is threadedly connected with the threaded hole.

[0016] The lower shell is also provided with a fixing portion, and the lower shell is arranged on the mounting base through the fixing portion.

[0017] The ventilation valve is mounted on the mounting portion in a snap-on, press-in or screw-on manner.

[0018] The utility model has the following beneficial effects: a sealing strip is arranged in the groove of the upper shell, and a protrusion is arranged on the upper surface of the lower shell, the protrusion matches the groove, and the protrusion is pressed into the groove to squeeze the sealing strip to deform, which can achieve an excellent sealing effect, effectively prevent water or dust from entering the cavity, thereby protecting the circuit board from damage and extending its service life. The upper shell is equipped with a breathable valve to ventilate the cavity, thereby ensuring the air pressure balance in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 The utility model is a structural schematic diagram of an electric vehicle charging protocol converter.

[0021] Figure 2 This is an assembly diagram of an electric vehicle charging protocol converter of the utility model.

[0022] Figure 3 The utility model is a schematic diagram of the interior of an upper shell of an electric vehicle charging protocol converter.

[0023] Figure 4 This is a cross-sectional view of an upper shell of an electric vehicle charging protocol converter according to the utility model.

[0024] The reference numerals in the figures indicate:

[0025] 1-upper shell, 11-annular groove, 12-mounting portion, 13-through hole, 14-positioning ring, 2-lower shell, 21-protrusion, 22-fixing portion, 23-positioning column, 3-circuit board, 4-sealing strip, 5-ventilation valve, 6-plug interface, 7-fixing column. DETAILED DESCRIPTION

[0026] 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 in 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.

[0027] The utility model provides an electric vehicle charging protocol converter, such as Figure 1-Figure 4 As shown, the upper shell 1, the lower shell 2, the circuit board 3, the sealing strip 4 and the breathable valve 5; the lower surface of the upper shell 1 has an annular groove 11, and the sealing strip 4 is at least partially arranged in the groove 11; the circuit board 3 is arranged in the upper shell 1; the upper shell 1 has an inwardly recessed mounting portion 12, and the mounting portion 12 has a through hole 13; the breathable valve 5 is arranged on the mounting portion 12 through the through hole 13; the upper shell 1 is detachably connected to the lower shell 2, and the lower shell 2 has a protrusion 21 suitable for inserting into the groove 11. The upper shell 1 and the lower shell 2 enclose a closed cavity for protecting the circuit board 3 therein, and the circuit board 3 has a circuit device for protocol conversion, and its shockproof or waterproof requirements are very high. A groove 11 is arranged on the lower surface of the upper shell 1, and a sealing strip 4 is arranged in the groove 11. The sealing strip 4 can be completely immersed in the groove 11, or can be partially located in the groove 11 and partially protruded from the groove 11. The upper surface of the lower shell 2 has a protrusion 21, which matches the groove 11. When the upper shell 1 and the lower shell 2 are covered, the protrusion 21 is pressed into the groove 11, squeezing the sealing strip 4 to deform, which can achieve an excellent sealing effect and effectively prevent water or dust from entering the cavity, thereby protecting the circuit board from damage and extending its service life.

[0028] Since the circuit board 1 and the electrical components connected thereto will generate heat during operation, temperature fluctuations may cause overpressure or negative pressure in the working environment of the electronic components. The pressure difference between the internal and external environments may have a negative impact on the electronic components, causing them to deform or be damaged. Therefore, a breathable valve 5 is installed to ventilate the cavity, thereby ensuring the air pressure balance in the cavity.

[0029] In some embodiments, the sealing strip 4 is annular in shape and at least partially protrudes from the groove 11, and the outer edge of the groove 11 is higher than the inner edge of the groove 11. Figure 4 As shown, it is squeezed from top to bottom and from left to right at the same time, achieving double insurance: when the left and right squeezing fails, the upper and lower positions still remain sealed; when the upper and lower squeezing fails, the left and right still remain sealed; on the other hand, when the upper and lower squeezing forces and the left and right squeezing forces occur at the same time, they play a role in strengthening the squeezing forces in mutual directions.

[0030] In some embodiments, a plug interface 6 is further included, and the plug interface 6 extends into the upper housing 1 and is electrically connected to the circuit board 3. The plug interface 6 is used to realize the electrical connection between the circuit board 3 and an external cable.

[0031] Furthermore, the plug interface 6 is sealed and connected to the upper housing 1, thereby ensuring the sealing integrity of the entire protocol converter.

[0032] In some embodiments, a fixing column 7 is provided in the upper housing, and the circuit board 3 is screwed on the fixing column 7. The screw connection facilitates the rapid installation and replacement of the circuit board 3, and the gasket provided on the fixing column 7 can effectively buffer and protect the circuit board 3.

[0033] In some embodiments, the mounting portion 12 is disposed on the side of the upper shell, and the air valve 5 does not protrude from the side of the upper shell 1. The mounting portion 12 of the air valve 5 is recessed in the upper shell 1, so that the air valve 5 is lower than the outer contour of the upper shell 1 after installation, avoiding interference with the vehicle body and leaving more space for the vehicle body.

[0034] In some embodiments, the lower surface of the mounting portion 12 gradually slopes downward from close to the through hole 13 to away from the through hole 13. The inclined setting allows external water droplets to slide off in time, preventing water from stagnating near the through hole and infiltrating into the through hole.

[0035] In some embodiments, the lower housing 2 has a positioning column 23, the positioning column 23 has a threaded hole, the upper housing 1 has a positioning ring 14, the positioning ring 14 is sleeved on the positioning column 23, and the bolt passes through the positioning ring 14 and is screwed to the threaded hole. The positioning ring 14 and the positioning column 23 cooperate to relatively fix the upper housing 1 and the lower housing 2, and then the bolt passes through the positioning ring 14 and the threaded hole of the positioning column 23 to connect the upper housing 1 and the lower housing 2.

[0036] In some embodiments, the lower housing 2 is further provided with a fixing portion 22, and the lower housing 2 is arranged on the mounting base through the fixing portion 22. The fixing portion 22 may be a through hole or a threaded hole, and a screw is passed through the through hole or the threaded hole to fix the lower housing 2 on the mounting base.

[0037] The ventilation valve 5 is mounted on the mounting portion 12 in a snap-fit, press-fit or screw-fit manner. The snap-fit ​​connection is suitable for situations where quick installation is required; the press-fit installation can be used in situations where a more stable connection is required; the screw-fit installation can meet the needs of quick installation and removal at the same time.

[0038] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An electric vehicle charging protocol converter, characterized in that: include: Upper shell, lower shell, circuit board, sealing strip and breathable valve; The lower surface of the upper shell has an annular groove, and the sealing strip is at least partially arranged in the groove; The circuit board is arranged in the upper housing; The upper shell has an inwardly recessed mounting portion, and the mounting portion has a through hole; The air-permeable valve is arranged on the mounting portion through the through hole; The upper shell is detachably connected to the lower shell, and the lower shell has a protrusion suitable for inserting into the groove.

2. According to claim 1, an electric vehicle charging protocol converter is characterized in that: The sealing strip is annular in shape and at least partially protrudes from the groove, and the outer edge of the groove is higher than the inner edge of the groove.

3. According to claim 1, an electric vehicle charging protocol converter is characterized in that: It also includes a plug-in interface, which extends into the upper shell and is electrically connected to the circuit board.

4. The electric vehicle charging protocol converter according to claim 3, characterized in that: The plug-in interface is sealed and connected to the upper shell.

5. The electric vehicle charging protocol converter according to claim 1, characterized in that: A fixing column is arranged in the upper shell, and the circuit board is screwed on the fixing column.

6. The electric vehicle charging protocol converter according to claim 1, characterized in that: The mounting portion is arranged on a side surface of the upper shell, and the air-permeable valve does not protrude from the side surface of the upper shell.

7. The electric vehicle charging protocol converter according to claim 6, characterized in that: The lower surface of the mounting portion gradually slopes downward from being close to the through hole to being away from the through hole.

8. The electric vehicle charging protocol converter according to claim 1, characterized in that: The lower shell has a positioning column, and the positioning column has a threaded hole. The upper shell has a positioning ring, and the positioning ring is sleeved on the positioning column. The bolt passes through the positioning ring and is threadedly connected with the threaded hole.

9. The electric vehicle charging protocol converter according to claim 1, characterized in that: The lower shell is also provided with a fixing portion, and the lower shell is arranged on the mounting base through the fixing portion.

10. The electric vehicle charging protocol converter according to claim 1, characterized in that: The ventilation valve is mounted on the mounting portion in a snap-on, press-in or screw-on manner.

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