Charging socket

Abstract

The utility model discloses a charging socket, comprising a housing and a circuit board arranged in the housing, the circuit board is provided with a channel, a power terminal passes through the channel, the circuit board is provided with a convex part extending towards the axis of the channel, and the convex part is provided with a thermistor and a heat conduction sleeve sleeved on the convex part and the thermistor. The charging socket can accurately, quickly and stably detect the temperature of the power terminal, and the safety of the charging socket is improved while the reliability of the thermistor is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging, and in particular to a charging socket. Background Technology

[0002] With the development of new energy vehicles, charging sockets are being used more and more widely. Existing charging sockets generate a lot of heat during charging, and high temperatures can pose safety hazards. Therefore, how to accurately, quickly, and stably detect the temperature of the terminals in a charging socket has become an increasingly important issue. Utility Model Content

[0003] The main purpose of this utility model is to provide a charging socket, including a housing and a circuit board disposed inside the housing. The circuit board has a channel through which power terminals pass. The circuit board has a protrusion extending along the axis of the channel. A thermistor and a heat-conducting sleeve are disposed on the protrusion and the thermistor.

[0004] Optionally, in one embodiment of the present invention, the circuit board is provided with a first recess and a second recess, the first recess and the second recess being located on both sides of the protrusion and communicating with the channel.

[0005] Optionally, in one embodiment of the present invention, the heat-conducting sleeve is provided with an insertion groove, and the protrusion is inserted into the insertion groove.

[0006] Optionally, in one embodiment of the present invention, the heat-conducting sleeve is further provided with a receiving groove, the receiving groove being connected to the insertion groove, so that the thermistor is housed in the receiving groove.

[0007] Optionally, in one embodiment of the present invention, the heat-conducting sleeve includes a first surface, a second surface, a first side surface, a second side surface, and a bottom surface. The first surface and the second surface are arranged opposite to each other, the first side surface and the second side surface are arranged opposite to each other, and the bottom surface is perpendicular to the first surface, the second surface, the first side surface, and the second side surface. The first surface, the second surface, the first side surface, the second side surface, and the bottom surface together form the insertion groove.

[0008] Optionally, in one embodiment of the present invention, the length of the insertion groove in the first direction is less than or equal to the length of the protrusion in the first direction, and / or the length of the insertion groove in the second direction is less than or equal to the length of the protrusion in the second direction.

[0009] Optionally, in one embodiment of the present invention, the length of the first side surface in the first direction is greater than or equal to the length of the first recess in the first direction, and / or the length of the second side surface in the first direction is greater than or equal to the length of the second recess in the first direction.

[0010] Optionally, in one embodiment of the present invention, the charging socket is further provided with a signal terminal, and the circuit board is further provided with a conductive pin corresponding to the signal terminal. The conductive pin is columnar. A conductive groove is provided at one end of the signal terminal facing the circuit board, and the conductive pin is inserted into the conductive groove to make the conductive pin and the signal terminal electrically connected.

[0011] Optionally, in one embodiment of the present invention, the conductive groove is further provided with an elastic part, and the elastic part and the conductive needle are elastically and electrically connected.

[0012] Optionally, in one embodiment of this utility model, the elastic part is a rotating spring clamp.

[0013] Optionally, in one embodiment of the present invention, the charging socket further includes a flip cover hinged to the housing, the flip cover covering the plug of the housing.

[0014] Optionally, in one embodiment of the present invention, the outer shell includes a main body and a second shell disposed at the tail of the main body. The second shell is provided with a through hole through which the power terminal passes. The second shell is provided with a claw around the through hole. The power terminal is provided with a limiting part along the side wall. One end of the claw near the limiting part abuts against the limiting part.

[0015] This utility model of a charging socket features a protrusion extending along the axis of the circuit board, with a thermistor positioned close to the channel and consequently near the power terminals. This allows the thermistor to quickly obtain the temperature near the power terminals, enabling rapid temperature detection of the terminals within the charging socket. Furthermore, by enclosing the thermistor and the protrusion with a heat-conducting sleeve, the power terminals come into contact with the sleeve when inserted into the channel, thus achieving indirect contact and improving the accuracy and stability of temperature monitoring of the power terminals. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the charging socket of this utility model;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of the charging socket of this utility model;

[0019] Figure 3 This is a front view of an embodiment of the charging socket of this utility model;

[0020] Figure 4 for Figure 3 Cross-sectional view at point AA;

[0021] Figure 5 for Figure 3 Cross-sectional view at BB;

[0022] Figure 6 for Figure 3 Cross-sectional view at CC;

[0023] Figure 7 for Figure 3 Cross-sectional view at DD;

[0024] Figure 8 for Figure 3 Sectional view at EE;

[0025] Figure 9 for Figure 3 Cross-sectional view at FF;

[0026] Figure 10 This is a bottom view of an embodiment of the charging socket of this utility model;

[0027] Figure 11 for Figure 10 Cross-sectional view at point GG;

[0028] Figure 12 This is a front view of an embodiment of the circuit board of this utility model;

[0029] Figure 13 This is a right view of an embodiment of the circuit board of this utility model;

[0030] Figure 14 This is a schematic diagram of the structure of an embodiment of the electric heating mantle of this utility model.

[0031] Explanation of icon numbers:

[0032] 100. Charging socket; 10. Outer shell; 11. First shell; 111. Connector; 12. Main body; 121. Plug-in hole; 122. Plug-in part; 123. Limiting wall; 13. Second shell; 131. Through hole; 132. Claw; 14. Flip cover; 141. Sealing gasket; 20. Circuit board; 21. Channel; 22. Heat-conducting sleeve; 221. Plug-in groove; 222. Receiving groove; 223. First surface; 224. Second surface; 225. First side surface; 226. Second side surface; 227. Bottom surface; 231. First recess; 232. Second recess; 24. Protrusion; 25. Conductive pin; 26. Conductive hole; 27. Adapter pin; 28. Low-voltage connector; 29. ​​Thermistor; 31. Power terminal; 311. Limiting part; 312. Plug end; 313. Copper busbar; 314. Mounting part; 32. Signal terminal; 321. Conductive groove; 322. Elastic part.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] With the development of new energy vehicles, charging sockets are being used more and more widely. Existing charging sockets generate a lot of heat during charging, and high temperatures can pose safety hazards. Therefore, how to accurately, quickly, and stably detect the temperature of the terminals in a charging socket has become an increasingly important issue.

[0038] Therefore, the present invention, a charging socket 100, by providing a protrusion 24 extending along the axis on the circuit board 20, and by providing a thermistor 29 at the protrusion 24, makes the thermistor 29 close to the channel 21, and further close to the power terminal 31. This allows the thermistor 29 to quickly obtain the temperature near the power terminal 31, thereby enabling rapid detection of the temperature of the terminal in the charging socket 100. By covering the thermistor 29 and the protrusion 24 with a heat-conducting sleeve 22, when the power terminal 31 is inserted into the channel 21, the power terminal 31 contacts the heat-conducting sleeve 22, and then indirectly contacts the thermistor 29, improving the accuracy and stability of temperature monitoring of the power terminal 31.

[0039] To better understand the above technical solution, a detailed explanation of the technical solution is provided below with reference to the accompanying drawings.

[0040] The arrangement direction of the power terminals 31 is defined as the X-axis direction, the axial direction of the power terminals 31 is defined as the Y-axis direction, and the directions perpendicular to the X-axis and Y-axis are defined as the Z-axis directions. The X-axis, Y-axis, and Z-axis form a spatial rectangular coordinate system. The X-axis direction is also called the first direction, the Y-axis direction is also called the second direction, and the Z-axis direction is also called the third direction. The following descriptions of various embodiments are based on this spatial rectangular coordinate system.

[0041] like Figure 1-14 As shown, a charging socket 100 includes a housing 10 and a circuit board 20 disposed inside the housing 10. The circuit board 20 has a channel 21, through which a power terminal 31 passes. The circuit board 20 has a protrusion 24 extending toward the axis of the channel 21. The protrusion 24 has a thermistor 29 and a heat-conducting sleeve 22 sleeved on the protrusion 24 and the thermistor 29.

[0042] Understandably, the charging socket 100 includes a housing 10, inside which are provided power terminals 31, signal terminals 32, and a circuit board 20. The circuit board 20 has a channel 21 through which the power terminals 31 pass. When the charging gun and the charging socket 100 are connected, the charging pile can transmit electrical energy to the charging gun, which is then transmitted through the power terminals 31 of the charging socket 100 to the interior of the new energy vehicle to power it. During the current transmission process, the power terminals 31 generate a large amount of heat, causing the temperature of the entire charging socket 100 to rise. By providing a protrusion 24 extending axially near the channel 21 on the circuit board 20, and by providing a thermistor 29 at the protrusion 24, the thermistor 29 is positioned near the channel 21 and thus near the power terminals 31. This allows the thermistor 29 to quickly obtain the temperature near the power terminals 31, thereby enabling rapid detection of the temperature of the terminals in the charging socket 100. By providing a heat-conducting sleeve 22 over the thermistor 29 and the protrusion 24, when the power terminal 31 is inserted into the channel 21, the power terminal 31 contacts the heat-conducting sleeve 22, and then the power terminal 31 indirectly contacts the thermistor 29, thereby improving the accuracy and stability of temperature monitoring of the power terminal 31.

[0043] Furthermore, in one embodiment of the present invention, the circuit board 20 is provided with a first recess 231 and a second recess 232, the first recess 231 and the second recess 232 are respectively located on both sides of the protrusion 24 and communicate with the channel 21.

[0044] Understandable, such as Figure 11 As shown, by setting the first recess 231 and the second recess 232 on both sides of the protrusion 24 along the first direction, it is convenient for the heat-conducting sleeve 22 to be sleeved on the outside of the protrusion 24, thereby improving the stability of the connection between the heat-conducting sleeve 22 and the protrusion 24.

[0045] Furthermore, in one embodiment of the present invention, the heat-conducting sleeve 22 is provided with an insertion groove 221, and the protrusion 24 is inserted into the insertion groove 221.

[0046] Understandable, such as Figure 13 As shown, the heat-conducting sleeve 22 is provided with a plug groove 221. When installing the heat-conducting sleeve 22, the heat-conducting sleeve 22 is fitted onto the protrusion 24 so that the heat-conducting sleeve 22 wraps around the thermistor 29, preventing the power terminal 31 from directly contacting the thermistor 29 and causing damage to the thermistor 29. At the same time, it increases the electrical distance between the power terminal 31 and the thermistor 29.

[0047] Furthermore, in one embodiment of the present invention, the heat-conducting sleeve 22 is also provided with a receiving groove 222, which is connected to the insertion groove 221 so that the thermistor 29 is housed in the receiving groove 222.

[0048] Understandable, such as Figure 13 As shown, by setting a receiving groove 222 in the heat conduction groove, when the heat conduction sleeve 22 is fitted onto the protrusion 24, the thermistor 29 is just housed in the receiving groove 222, which also facilitates the installation of the heat conduction sleeve 22.

[0049] Furthermore, in one embodiment of this utility model, the heat-conducting sleeve 22 includes a first surface 223, a second surface 224, a first side surface 225, a second side surface 226, and a bottom surface 227. The first surface 223 and the second surface 224 are arranged opposite to each other, the first side surface 225 and the second side surface 226 are arranged opposite to each other, and the bottom surface 227 is arranged perpendicular to the first surface 223, the second surface 224, the first side surface 225, and the second side surface 226. The first surface 223, the second surface 224, the first side surface 225, the second side surface 226, and the bottom surface 227 together form the insertion groove 221.

[0050] Understandable, such as Figure 13 As shown, the first surface 223, the second surface 224, the first side surface 225, the second side surface 226, and the bottom surface 227 together form the insertion groove 221. During installation, the opening of the insertion groove 221 faces the protrusion 24, so that the protrusion 24 is inserted into the insertion groove 221, and the thermistor 29 enters the receiving groove 222. At this time, the bottom surface 227 and the side wall of the channel 21 together enclose the groove. When the power terminal 31 is inserted into the channel 21, the bottom surface 227 of the heat-conducting sleeve 22 faces the side wall of the power terminal 31 and is in contact with the power terminal 31. When the power terminal 31 heats up, the heat from the power terminal 31 is transferred through the bottom surface 227 to the entire heat-conducting sleeve 22, and then to the thermistor 29, thereby realizing the temperature detection of the thermistor 29.

[0051] Furthermore, in one embodiment of the present invention, the length of the insertion groove 221 in the first direction is less than or equal to the length of the protrusion 24 in the first direction, and / or the length of the insertion groove 221 in the second direction is less than or equal to the length of the protrusion 24 in the second direction.

[0052] Understandably, when the length of the insertion groove 221 in the first direction is less than or equal to the length of the protrusion 24 in the first direction, and / or the length of the insertion groove 221 in the second direction is less than or equal to the length of the protrusion 24 in the second direction, the insertion groove 221 is press-fitted to the protrusion 24 at least in the first or second direction, thereby ensuring the stability of the connection between the heat-conducting sleeve 22 and the protrusion 24 and preventing the heat-conducting sleeve 22 from falling off the protrusion 24.

[0053] Furthermore, in one embodiment of the present invention, the length of the first side surface 225 in the first direction is greater than or equal to the length of the first recess 231 in the first direction, and / or the length of the second side surface 226 in the first direction is greater than or equal to the length of the second recess 232 in the first direction.

[0054] Understandably, when the length of the first side 225 in the first direction is greater than or equal to the length of the first recess 231 in the first direction, and / or the length of the second side 226 in the first direction is greater than or equal to the length of the second recess 232 in the first direction, the first side 225 can be interference-fitted with the first recess 231, and / or the second side 226 can be interference-fitted with the second recess 232, thereby ensuring the connection stability between the heat-conducting sleeve 22 and the circuit board 20 and preventing the heat-conducting sleeve 22 from falling off the circuit board 20.

[0055] Furthermore, in one embodiment of the present invention, the charging socket 100 is further provided with a signal terminal 32, and the circuit board 20 is further provided with a conductive pin 25 corresponding to the signal terminal 32. The conductive pin 25 is columnar. The end of the signal terminal 32 facing the circuit board 20 is provided with a conductive groove 321, and the conductive pin 25 is inserted into the conductive groove 321 to make the conductive pin 25 and the signal terminal 32 electrically connected.

[0056] Understandably, by setting conductive pins 25 on the circuit board 20 and setting conductive grooves 321 on the end of the signal terminal 32 facing the circuit board 20, when the circuit board 20 and the signal terminal 32 are installed, the conductive pins 25 will be inserted into the conductive grooves 321, thereby realizing the transmission of electrical energy from the signal terminal 32 to the conductive pins 25, and then to the circuit board 20.

[0057] Preferably, the circuit board 20 is further provided with a conductive hole 26, and an adapter pin 27 is connected inside the conductive hole 26. The end of the adapter pin 27 away from the circuit board 20 is connected to a low-voltage connector 28. The low-voltage connector 28 is connected to a wire to transmit the signal to the new energy vehicle through the wire. When the signal on the signal terminal 32 is transmitted to the conductive pin 25, it will be transmitted through the conductive pin 25 to the circuit board 20, and then to the adapter pin 27 connected to the circuit board 20. From the adapter pin 27, it will be transmitted to the low-voltage connector 28, and then to the new energy vehicle through the wire, thereby realizing the transmission of the signal on the signal terminal 32.

[0058] Furthermore, in one embodiment of the present invention, an elastic part 322 is also provided in the conductive groove 321, and the elastic part 322 and the conductive needle 25 are elastically and electrically connected.

[0059] Understandably, by providing an elastic part 322 within the conductive groove 321, when the conductive needle 25 is inserted into the conductive groove 321, the conductive needle 25 and the elastic part 322 are elastically connected, ensuring the stability of the connection between the conductive needle 25 and the signal terminal 32. Preferably, the elastic part 322 is a spring clamp.

[0060] Furthermore, in one embodiment of the present invention, the charging socket 100 further includes a flip cover 14 hinged to the housing 10, the flip cover 14 covering the plug 111 of the housing 10.

[0061] Understandably, by providing a flip cover 14 at the plug-in end 312 of the outer casing 10 of the charging socket 100, the flip cover 14 can be used to close the plug-in 111 of the outer casing 10 when the charging socket 100 is not being charged. Preferably, the outer casing 10 has a main body 12, a second housing 13 located at the tail end of the main body 12, and a first housing 11 located at the end of the main body 12 away from the second housing 13. The plug-in 111 is located at the end of the first housing 11 away from the second housing 13. When the charging socket 100 and the charging gun are plugged in, the charging gun will plug into the plug-in 111 to transfer electrical energy to the power terminal 31 inside the outer casing 10. By providing the flip cover 14, when the charging socket 100 is not being charged, the flip cover 14 can be closed on the plug-in 111 to prevent rainwater and dirt from entering the plug-in 111 and then into the interior of the outer casing 10, causing short circuits and electrical damage. Preferably, the end of the flip cover 14 facing the connector 111 is also provided with a sealing gasket 141, which can further improve the sealing performance of the outer shell 10.

[0062] Furthermore, in one embodiment of the present invention, the outer shell 10 includes a main body 12 and a second shell 13 disposed at the tail of the main body 12. The second shell 13 is provided with a through hole 131 through which the power terminal 31 passes. The second shell 13 is provided with a claw 132 around the through hole 131. The power terminal 31 is provided with a limiting part 311 around its side wall. One end of the claw 132 near the limiting part 311 abuts against the limiting part 311.

[0063] Understandable, such as Figure 5As shown, the power terminal 31 includes a mounting portion 314 and plug-in ends 312 and copper busbars 313 located at both ends of the mounting portion 314. The plug-in ends 312 are used to connect with conductive terminals in the charging gun for current transmission. The copper busbars 313 extend at least partially out of the housing 10 for connection with other copper busbars. The main body 12 has a plug-in portion 122, and a limiting wall 123 is provided at one end of the plug-in portion 122 away from the tail. A plug-in hole 121 is provided in the limiting portion 311. When the power terminal 31 and the housing 10 are installed, the power terminal 31 is inserted into the main body 12 from the tail. The plug-in end 312 and the limiting wall 123 abut against each other to prevent the power terminal 31 from detaching from the plug-in portion 122 in the second direction. When the second housing 13 and the main body 12 are installed, the claws 132 on the second housing 13 are precisely engaged with the limiting portion 311 of the power terminal 31 to prevent the power terminal 31 from detaching from the tail of the housing 10. Preferably, the limiting part 311 is provided on the mounting part 314.

[0064] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

[0065] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A charging socket (100), characterized in that, The device includes a housing (10) and a circuit board (20) disposed within the housing (10). The circuit board (20) has a channel (21) through which a power terminal (31) passes. The circuit board (20) has a protrusion (24) extending along the axis of the channel (21). The protrusion (24) has a thermistor (29) and a heat-conducting sleeve (22) fitted on the protrusion (24) and the thermistor (29).

2. The charging socket (100) as described in claim 1, characterized in that, The circuit board (20) is provided with a first recess (231) and a second recess (232), the first recess (231) and the second recess (232) are located on both sides of the protrusion (24) and communicate with the channel (21).

3. The charging socket (100) as described in claim 2, characterized in that, The heat-conducting sleeve (22) is provided with a plug groove (221), and the protrusion (24) is inserted into the plug groove (221).

4. The charging socket (100) as described in claim 3, characterized in that, The heat-conducting sleeve (22) is also provided with a receiving groove (222), which is connected to the insertion groove (221) so that the thermistor (29) is housed in the receiving groove (222).

5. The charging socket (100) as described in claim 4, characterized in that, The heat-conducting sleeve (22) includes a first surface (223), a second surface (224), a first side surface (225), a second side surface (226), and a bottom surface (227). The first surface (223) and the second surface (224) are arranged opposite to each other, the first side surface (225) and the second side surface (226) are arranged opposite to each other, and the bottom surface (227) is perpendicular to the first surface (223), the second surface (224), the first side surface (225), and the second side surface (226). The first surface (223), the second surface (224), the first side surface (225), the second side surface (226), and the bottom surface (227) together form the insertion groove (221).

6. The charging socket (100) as described in claim 5, characterized in that, The length of the insertion groove (221) in the first direction is less than or equal to the length of the protrusion (24) in the first direction, and / or the length of the insertion groove (221) in the second direction is less than or equal to the length of the protrusion (24) in the second direction.

7. The charging socket (100) as described in any one of claims 5-6, characterized in that, The length of the first side (225) in the first direction is greater than or equal to the length of the first recess (231) in the first direction, and / or the length of the second side (226) in the first direction is greater than or equal to the length of the second recess (232) in the first direction.

8. The charging socket (100) as described in claim 1, characterized in that, The charging socket (100) is also provided with a signal terminal (32), and the circuit board (20) is also provided with a conductive pin (25) corresponding to the signal terminal (32). The conductive pin (25) is columnar. The end of the signal terminal (32) facing the circuit board (20) is provided with a conductive groove (321). The conductive pin (25) is inserted into the conductive groove (321) so that the conductive pin (25) and the signal terminal (32) are electrically connected.

9. The charging socket (100) as described in claim 8, characterized in that, The conductive groove (321) is further provided with an elastic part (322), and the elastic part (322) and the conductive needle (25) are elastically and electrically connected.

10. The charging socket (100) as described in claim 9, characterized in that, The elastic part (322) is a rotating spring clamp.

11. The charging socket (100) as described in claim 1, characterized in that, The charging socket (100) also includes a flip cover (14) hinged to the housing (10), the flip cover (14) covering the plug (111) of the housing (10).

12. The charging socket (100) as described in claim 11, characterized in that, The outer casing (10) includes a main body (12) and a second housing (13) disposed at the tail of the main body (12). The second housing (13) has a through hole (131) through which the power terminal (31) passes. The second housing (13) has a claw (132) surrounding the through hole (131). The power terminal (31) has a limiting part (311) circumferentially disposed along the side wall. The end of the claw (132) near the limiting part (311) abuts against the limiting part (311).

Images