Electro-hydraulic separation structure and liquid cooling charging socket

Abstract

The utility model discloses an electro-hydraulic separation structure and a liquid cooling charging socket, the electro-hydraulic separation structure is arranged at one end far away from the liquid cooling charging socket, and the electro-hydraulic separation structure comprises an electro-hydraulic separation liquid inlet pipe, a lead, an electro-hydraulic separation liquid outlet pipe and an electro-hydraulic separation block; the electro-hydraulic separation block is integrally conductive and is provided with a liquid inlet pipe mounting area, a conductor switching area, a liquid outlet pipe mounting area, a connecting part and an electro-hydraulic separation block liquid outlet, the electro-hydraulic separation liquid inlet pipe is connected with the liquid inlet pipe mounting area, and the electro-hydraulic separation liquid outlet pipe is connected with the liquid outlet pipe mounting area; a wire arranged in the electro-hydraulic separation liquid inlet pipe in a clearance mode penetrates through the liquid inlet pipe mounting area, the conductor switching area and the liquid outlet pipe mounting area through a liquid pipe liquid inlet in the end of the liquid inlet pipe mounting area to be connected with the connecting part, and cooling liquid located between the wire and the electro-hydraulic separation liquid inlet pipe flows to the electro-hydraulic separation liquid outlet pipe through the electro-hydraulic separation block to be discharged. The electro-hydraulic separation structure provided by the utility model is matched with the liquid-cooled charging socket to realize shunting of current and cooling liquid after liquid cooling of the liquid-cooled charging socket.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle charging sockets, in particular to an electric-liquid separation structure and a liquid-cooled charging socket. Background Art

[0002] With the increasing popularity of new energy vehicles, the growing number of electric vehicle users is demanding higher charging speeds. Charging power is increasing, while charging times are shortening. With the widespread adoption of liquid-cooled charging technology on charging guns, charging currents are also increasing. However, most current charging sockets on vehicles still use traditional DC charging sockets. As charging power increases, current also increases. In this case, liquid cooling technology in charging guns within the charging chain can quickly dissipate heat, actively cooling the charging gun and cable. However, traditional DC charging sockets rely on passive heat dissipation through natural convection. Under high currents, the heat generated cannot be dissipated quickly, limiting the increase in charging power and impacting the charging experience. This becomes a shortcoming of the entire charging chain. Sustained high currents can even cause the charging socket to overheat, leading to thermal failure and ablation. Utility Model Content

[0003] The purpose of the utility model is to provide an electro-liquid separation structure and a liquid-cooled charging socket, which are used to solve the technical problem of low heat dissipation efficiency caused by the natural heat convection of the socket assembly in the traditional DC charging socket; and to solve the technical problem of separating the coolant from the current when the charging socket, charging cable and flexible wire are cooled by the coolant.

[0004] The utility model solves the above problems through the following technical solutions:

[0005] An electro-liquid separation structure is provided at one end away from the liquid-cooled charging socket, comprising: an electro-liquid separation liquid inlet pipe, a wire, an electro-liquid separation liquid outlet pipe and an electro-liquid separation block;

[0006] The electro-hydraulic separation block is conductive as a whole, and has a liquid inlet pipe installation area, a conductor transfer area, a liquid outlet pipe installation area, a connecting part and a liquid outlet of the electro-hydraulic separation block, wherein the electro-hydraulic separation liquid inlet pipe is connected to the liquid inlet pipe installation area, and the electro-hydraulic separation liquid outlet pipe is connected to the liquid outlet pipe installation area. The wire with a gap arranged in the electro-hydraulic separation liquid inlet pipe passes through the liquid pipe inlet at the end of the liquid inlet pipe installation area and passes through the liquid inlet pipe installation area, the conductor transfer area, the liquid outlet pipe installation area and the connecting part. The coolant located between the wire and the electro-hydraulic separation liquid inlet pipe flows through the electro-hydraulic separation block to the electro-hydraulic separation liquid outlet pipe for discharge.

[0007] As a further improvement, the electro-hydraulic separation liquid inlet pipe is sleeved outside the liquid inlet pipe installation area, and the electro-hydraulic separation liquid outlet pipe is sleeved outside the liquid outlet pipe installation area, and both are clamped by a clamp.

[0008] As a further improvement, the connecting portion is a plate-shaped structure for welding and connecting with the wire.

[0009] As a further improvement, the connecting portion is a cylindrical structure for crimping connection with the wire.

[0010] At the same time, the present invention also solves the above problems through the following technical solutions:

[0011] A liquid-cooled charging socket, connected to an electro-liquid separation structure as described above, includes: a front mounting assembly, a signal pin assembly, a PE pin assembly, a PCBA assembly, a rear mounting assembly, and a heat dissipation structure of the jack assembly, wherein the signal pin assembly, the PE pin assembly, the PCBA assembly, and the heat dissipation structure are arranged in the front mounting assembly and the rear mounting assembly that are connected to each other.

[0012] As a further improvement, a heat conducting block is provided on the thermal sensor of the PCBA assembly, and the heat conducting block is coated with thermal grease.

[0013] As a further improvement, the heat dissipation structure includes an insulated cooling cavity, a socket and a flexible wire, one end of the flexible wire is inserted into the middle of the socket through the wire through-hole of the socket, and is fixedly connected to the connection area of ​​the socket; the socket with the flexible wire is limitedly set in the cooling cavity so that the connection area of ​​the socket and the cooling cavity form a cooling cavity; the cooling cavity has a connected liquid inlet and liquid outlet, wherein the liquid outlet is connected to the cooling cavity, and the coolant flows into the cooling cavity through the liquid outlet in the cooling cavity and flows out from the wire through-hole into which the flexible wire is inserted.

[0014] As a further improvement, the other end of the flexible wire is connected to the wire of the electro-hydraulic separation structure.

[0015] As a further improvement, the heat dissipation structure further includes: a liquid-conducting hose connected to the liquid inlet and the wire via respectively, wherein the other end of the liquid-conducting hose connected to the wire via is connected to the electro-liquid separation liquid inlet pipe.

[0016] As a further improvement, the liquid guide hose is interference fit with the liquid inlet and the wire through hole, and is locked by a clamp.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] (1) The utility model provides an electro-liquid separation structure, which diverts the current and coolant after the liquid-cooled charging socket is liquid-cooled, so as to achieve the purpose of electro-liquid separation and cooperate with the liquid-cooled charging socket.

[0019] (2) The present invention provides a liquid-cooled charging socket. Within the boundaries specified by the traditional national standard DC charging socket, cooling liquid is introduced at the connection between the socket and the flexible wire to cool the charging socket, charging cable and flexible wire. Combined with the currently popularized liquid-cooled charging gun technology, the heat generation on the charging link is controlled during high-power charging, thereby shortening the charging time and improving the user's charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded schematic diagram of a liquid-cooled charging socket of the present invention;

[0021] Figure 2 This is an exploded schematic diagram of a heat dissipation structure of a jack assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the cooling cavity structure of the present utility model;

[0023] Figure 4 This is a schematic diagram of a jack structure of the utility model;

[0024] Figure 5 This is a schematic diagram of another jack structure of the present utility model;

[0025] Figure 6 This is an explosion diagram of an electro-hydraulic separation structure of the utility model;

[0026] Figure 7 This is a structural diagram of an electro-hydraulic separation structure and a wire welding connection of the present invention;

[0027] Figure 8 The utility model is a structural schematic diagram of an electro-hydraulic separation structure and a wire crimping connection.

[0028] Reference numerals: 101, mounting flange; 102, sealing ring; 103, mounting plate; 104, self-tapping screw; 105, rear mounting plate; 106, PE sealing body; 107, tail cover; 108, sealing gasket; 109, PE tail cover; 201, cooling chamber; 2011, liquid outlet; 2012, liquid inlet; 2013, socket anti-rotation groove; 202, socket; 2021, sealing groove; 2022, retaining ring groove; 2023, first O-ring mounting groove; 2024, connection area; 2025, mounting anti-rotation; 2026, second O-ring mounting groove; 2027, wire through hole; 2028, stress relief port; 2029, crimping part; 203 , flexible wire; 204, retaining ring; 205, jack sealing ring; 206, clamp; 207, liquid guide hose; 301, signal pin assembly; 302, wire sealing body; 303, screw; 304, thermal block; 305, PCBA assembly; 306, PE pin assembly; 401, electro-hydraulic separation liquid outlet pipe; 402, wire; 403, first clamp; 404, second clamp; 405, electro-hydraulic separation liquid inlet pipe; 406, electro-hydraulic separation block; 4061, liquid inlet pipe installation area; 4062, liquid pipe liquid inlet; 4063, conductor transfer area; 4064, liquid outlet pipe installation area; 4065, connecting part; 4066, liquid outlet of electro-hydraulic separation block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] Combined with attachment Figure 2-4 As shown, a heat dissipation structure of a jack assembly includes: an insulated cooling cavity 201, a jack 202 and a flexible wire 203, one end of the flexible wire 203 is inserted into the middle of the jack 202 and fixedly connected to the connection area 2024 of the jack 202; the jack 202 with the flexible wire is limitedly set in the cooling cavity 201 so that the connection area 2024 of the jack 202 and the cooling cavity 201 form a cooling cavity, and the liquid outlet in the cooling cavity 201 is connected to the cooling cavity, and the coolant flows into the cooling cavity through the liquid outlet in the cooling cavity 201 and flows out from the end of the jack 202 inserted with the flexible wire 203, thereby realizing heat exchange.

[0032] For details, please refer to the attached Figure 4From left to right, jack 202 is formed with a sealing groove 2021, a retaining ring groove 2022, a first O-ring mounting groove 2023, a connection area 2024, a second O-ring mounting groove 2026, a mounting stop 2025, and a wire through hole 2027. Flexible wire 203 passes through wire through hole 2027 and then connects to connection area 2024 via a reliable physical connection method such as ultrasonic welding, thereby integrating it with jack 202. In this embodiment, connection area 2024 is a plate-like structure, which facilitates welding to one end of flexible wire 203.

[0033] Preferably, both the first O-ring mounting groove 2023 and the second O-ring mounting groove 2026 are provided with a socket sealing ring 205 to ensure a seal between the socket 202 and the cooling chamber 201. A retaining ring 204 is provided through the retaining ring groove, and the mounting stop mates with the socket's rotation stop groove in the cooling chamber to position the socket within the cooling chamber. Furthermore, a sealing structure is provided within the sealing groove 2021 to achieve a seal with the front mounting assembly.

[0034] Refer to the attached Figure 3 The cooling cavity is formed by injection molding or machining, and the material has insulating properties, resistance to coolant corrosion, and good temperature shock resistance. The cooling cavity 201 is physically formed with liquid outlets 2011 and liquid inlets 2012 corresponding to the number of the sockets 202. In this embodiment, there are two liquid outlets and two liquid inlets, respectively, and the liquid outlets 2011 and the liquid inlets 2012 are connected, and the coolant flows into the liquid inlet through the liquid inlet. The liquid inlet 2012 is located on the end face of the cooling cavity 201, and the liquid outlet 2011 is located in the through hole of the cooling cavity 201 where the socket 202 is installed, and the end face of the through hole is formed with a socket stop groove 2013 that cooperates with the installation stop 2025. Install the socket with flexible wire into the cooling cavity 201, install the anti-rotation 2025 to cooperate with the socket anti-rotation groove 2013 of the cooling cavity 201, at this time the liquid outlet 2011 is facing the connection area 2024 of the socket 202, and the cooling liquid directly flushes the high-heat-generating area of ​​the welding, thereby improving the efficiency of heat exchange.

[0035] Furthermore, the liquid guiding hose 207 is interference fitted onto the liquid inlet 2012 and the wire through hole 2027 and is locked with a clamp 206 to enhance the sealing performance.

[0036] During charging, the cooling pump pumps coolant through the liquid inlet into the cooling chamber, filling the entire chamber. It then exchanges heat with the heated surface immersed in the chamber. The pump's pressure pushes the coolant to the cooling chamber's liquid outlet, i.e., wire via 2027. Cooling is performed by immersion, and the coolant can be any insulating liquid medium, such as deionized water, silicone oil, formulated oil, or other liquid medium that meets the above requirements.

[0037] The conductive wire is a flexible wire, which is immersed in the liquid-conducting hose by immersion. A copper wire is arranged on the outer spiral of the flexible wire to restrain the flexible wire. This structure can improve the arrangement of the flexible wire in the liquid-conducting hose and reduce the resistance to the liquid. The liquid-conducting hose is formed of a heat-resistant material and is resistant to high temperatures and corrosion by the cooling medium. The liquid inlet pipe of the liquid-conducting hose is physically connected to the vehicle body cooling device; the liquid outlet pipe of the liquid-conducting hose is connected to the vehicle body cooling device through an electro-hydraulic separation part to separate the cooling liquid and the wire. The wire can be reliably connected to the electro-hydraulic separation part by ultrasonic welding or cold pressing, forming a closed loop with the charging link of the vehicle body.

[0038] Example 2

[0039] In this embodiment, the difference from embodiment 1 is that the heat dissipation structure of the jack assembly is that the jack 202 is designed as a cold press connection to meet different usage scenarios. Figure 5 The connection area 2024 includes: a crimping portion 2029, and stress relief openings 2028 at both ends of the crimping portion, so that the flexible wire 203 passes through the wire via 2027 into the crimping portion 2029 in the middle of the jack 202, and the crimping portion 2029 is operated by cold crimping to crimp the wire via 2027 and the jack 202. Of course, the connection area 2024 can also be set to other forms to connect the jack 202 and the flexible wire 203, and form a cooling cavity with the cooling cavity 201. The present invention does not impose any restrictions on this.

[0040] Example 3

[0041] Refer to the attached Figure 1 A liquid-cooled charging socket includes: a front mounting assembly, a signal pin assembly 301 provided with a sealing body 302, a PE pin assembly 306 provided with a PE sealing body 106, a sealing gasket 108, a PCBA assembly 305, a rear mounting assembly, and the heat dissipation structure of the socket assembly described in Example 1 or Example 2, etc. The signal pin assembly, PE pin assembly, PCBA assembly and heat dissipation structure are arranged in the front mounting assembly and the rear mounting assembly that are connected to each other, and the heat dissipation structure is used to achieve liquid cooling of the charging socket.

[0042] The front mounting assembly includes a mounting flange 101, a sealing ring 102 and a mounting plate 103. The front mounting assembly is formed by snapping the hanging platform frame opening at one end of the mounting flange 101 close to the mounting plate 103 with the hanging platform outside the mounting plate 103; the sealing ring 102 is installed between the mounting flange 101 and the mounting plate 103 through interference compression to form a sealing area.

[0043] Specifically, the signal pin assembly 301 and the PE pin assembly 306 are installed in the front mounting assembly's mounting plate 103. Next, the PCBA assembly 305 is secured to the corresponding mounting position on the front mounting assembly using screws 303. At this point, the heat conducting block 304, which has excellent thermal conductivity, needs to be mounted on the thermal sensor on the PCBA assembly 305. Thermal grease can be applied to this area to improve thermal conductivity. The heat dissipation structure of the jack assembly is then assembled in the corresponding mounting position on the mounting plate 103. After completing the above assembly, assemble the rear mounting plate 105 of the rear mounting assembly to the mounting flange 101. At this time, the sealing gasket 108 can be installed in sequence and sleeved on the signal pin assembly 301, and the tail cover 107 of the rear mounting assembly can be fastened to the end of the rear mounting plate 105 away from the front mounting assembly. The PE sealing body 106 is installed in sequence outside the PE pin assembly 306 in the rear mounting plate 105, and the PE tail cover 109 is fastened to seal the PE pin assembly 306 and the tail cover 107; finally, use the self-tapping screws 104 to fix the rear mounting plate 105 to the mounting flange 101 to complete the assembly of the entire charging socket.

[0044] Example 4

[0045] Refer to the attached Figure 6-8 An electro-liquid separation structure is provided at an end away from the liquid-cooled charging socket, comprising: an electro-liquid separation liquid inlet pipe 405, a wire 402, an electro-liquid separation liquid outlet pipe 401, an electro-liquid separation block 406, and a plurality of clamps, wherein the electro-liquid separation liquid inlet pipe 405 is connected to the liquid guide hose 207, and the wire 402 is connected to the flexible wire 203; of course, the liquid guide hose 207 at the end away from the liquid-cooled charging socket can also be used as the electro-liquid separation liquid inlet pipe 405, and the flexible wire 203 at the end away from the liquid-cooled charging socket can be used as the wire 402, and the present invention does not impose any restrictions on this;

[0046] The electro-hydraulic separation block 406 is conductive as a whole, and has a liquid inlet pipe installation area 4061, a liquid pipe inlet 4062, a conductor transfer area 4063, a liquid outlet pipe installation area 4064, a connecting part and an electro-hydraulic separation block liquid outlet 4066, wherein the electro-hydraulic separation liquid inlet pipe 405 is connected to the liquid inlet pipe installation area 4061, and the wire 402 with a gap arranged in the electro-hydraulic separation liquid inlet pipe 405 passes through the liquid pipe inlet 4062 and passes through the liquid inlet pipe installation area 4061, the conductor transfer area 4063, the liquid outlet pipe installation area 4064 and is connected to the connecting part, and the electro-hydraulic separation liquid outlet pipe 401 is connected to the liquid outlet pipe installation area 4064 to connect the electro-hydraulic separation liquid inlet pipe 405, the electro-hydraulic separation block 406 and the electro-hydraulic separation liquid outlet pipe 401, so that the cooling liquid is discharged from the electro-hydraulic separation liquid outlet pipe 401.

[0047] Specifically, the electro-hydraulic separation liquid inlet pipe 405 is sleeved outside the liquid inlet pipe installation area 4061 and is clamped by the second clamp 404 to achieve a tight connection; the electro-hydraulic separation liquid outlet pipe 401 is sleeved outside the liquid outlet pipe installation area 4064 and is clamped by the first clamp 403 to achieve a tight connection.

[0048] Preferably, the connecting portion 4065 is a plate-shaped structure, which is used to be welded to the wire 402 to achieve electrical connection.

[0049] In an optional embodiment, referring to the attached Figure 8 The connecting portion 4065 is a cylindrical structure, with openings formed at both ends thereof at the liquid outlet pipe installation area 4064 and the liquid outlet 4066 of the electro-hydraulic separation block so as to be crimped with the wire 402 to achieve electrical connection.

[0050] The working principle is as follows: the wire 402 passes through the electro-hydraulic separation inlet pipe 405, passes through the liquid pipe inlet 4062, and is fixed to the connection portion 4065 of the electro-hydraulic separation block 406 by welding or crimping. The electro-hydraulic separation block 406 is an excellent conductive conductor made of copper or other excellent weldable conductor. After being welded or crimped with the wire 402, it becomes a conductive whole. The electro-hydraulic separation inlet pipe 405 is interference-fitted into the inlet pipe installation area 4061 and secured with the second clamp 404. The electro-hydraulic separation outlet pipe 401 wraps around and passes over the outlet port 4066 and the connection portion 4065, then interference-fits into the outlet pipe installation area 4064 and is secured with the first clamp 403. At this time, the electro-hydraulic separation structure is assembled, and the coolant flows in from the only electro-hydraulic separation inlet pipe 405 of the liquid-cooled charging socket, and passes through the electro-hydraulic separation block liquid inlet 4062, the internal cavity of the electro-hydraulic separation block, the electro-hydraulic separation block liquid outlet 4066, and finally flows out from the electro-hydraulic separation outlet pipe 401.

[0051] The current flows in through the wire 402 , passes through the connection portion 4065 of the electro-hydraulic separation block and becomes a conductor with the electro-hydraulic separation block 406 , and finally flows out from the conductor transfer area 4063 of the electro-hydraulic separation block.

[0052] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An electro-hydraulic separation structure, arranged at one end away from the liquid-cooled charging socket, characterized in that: include: Electro-hydraulic separation liquid inlet pipe, wire, electro-hydraulic separation liquid outlet pipe and electro-hydraulic separation block; The electro-hydraulic separation block is conductive as a whole, and has a liquid inlet pipe installation area, a conductor transfer area, a liquid outlet pipe installation area, a connecting part and a liquid outlet of the electro-hydraulic separation block, wherein the electro-hydraulic separation liquid inlet pipe is connected to the liquid inlet pipe installation area, and the electro-hydraulic separation liquid outlet pipe is connected to the liquid outlet pipe installation area. The wire with a gap arranged in the electro-hydraulic separation liquid inlet pipe passes through the liquid pipe inlet at the end of the liquid inlet pipe installation area and passes through the liquid inlet pipe installation area, the conductor transfer area, the liquid outlet pipe installation area and the connecting part. The coolant located between the wire and the electro-hydraulic separation liquid inlet pipe flows through the electro-hydraulic separation block to the electro-hydraulic separation liquid outlet pipe for discharge.

2. The electro-hydraulic separation structure according to claim 1, characterized in that: The electro-hydraulic separation liquid inlet pipe is sleeved outside the liquid inlet pipe installation area, and the electro-hydraulic separation liquid outlet pipe is sleeved outside the liquid outlet pipe installation area, and both are clamped by clamps.

3. The electro-hydraulic separation structure according to claim 1, characterized in that: The connecting portion is a plate-shaped structure and is used for welding connection with the wire.

4. The electro-hydraulic separation structure according to claim 1, characterized in that: The connecting portion is a cylindrical structure and is used for crimping and connecting with the wire.

5. A liquid-cooled charging socket, characterized in that: Connected to an electro-hydraulic separation structure as described in claim 1, comprising: a front mounting assembly, a signal pin assembly, a PE pin assembly, a PCBA assembly, a rear mounting assembly, and a heat dissipation structure of a jack assembly, wherein the signal pin assembly, the PE pin assembly, the PCBA assembly, and the heat dissipation structure are arranged in the front mounting assembly and the rear mounting assembly that are snapped together.

6. The liquid-cooled charging socket according to claim 5, characterized in that: A heat conducting block is provided on the thermal sensor of the PCBA assembly, and the heat conducting block is coated with thermal grease.

7. The liquid-cooled charging socket according to claim 5, characterized in that: The heat dissipation structure includes an insulated cooling cavity, a socket and a flexible wire, one end of the flexible wire is inserted into the middle of the socket through the wire through-hole of the socket and is fixedly connected to the connection area of ​​the socket; the socket with the flexible wire is limitedly set in the cooling cavity so that the connection area of ​​the socket and the cooling cavity form a cooling cavity; the cooling cavity has a connected liquid inlet and liquid outlet, wherein the liquid outlet is connected to the cooling cavity, and the coolant flows into the cooling cavity through the liquid outlet in the cooling cavity and flows out from the wire through-hole into which the flexible wire is inserted.

8. The liquid-cooled charging socket according to claim 7, characterized in that: The other end of the flexible wire is connected to the wire of the electro-hydraulic separation structure.

9. The liquid-cooled charging socket according to claim 5, characterized in that: The heat dissipation structure further includes: a liquid-conducting hose connected to the liquid inlet and the wire through hole respectively, wherein the other end of the liquid-conducting hose connected to the wire through hole is connected to the electro-liquid separation liquid inlet pipe.

10. The liquid-cooled charging socket according to claim 9, characterized in that: The liquid guiding hose is interference fit with the liquid inlet and the wire through hole and is locked by a clamp.

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