High-voltage connector temperature sensing system

Abstract

The utility model discloses a temperature sensing system for a high-voltage connector, which relates to the technical field of connector temperature monitoring and comprises a terminal, a temperature sensor, a temperature sensor, a temperature sensor and a temperature sensor, and is characterized in that the terminal is configured to be matched with a plug of the high-voltage connector in a plugging manner; a probe of the temperature sensor is provided with a plastic shell, and an extension lead of the temperature sensor is used for being connected to a PCB circuit of the high-voltage connector; the radiating fin is assembled on the terminal, the radiating fin is provided with a mounting groove for accommodating the plastic shell, and a fixing piece for fixing the plastic shell is arranged in the mounting groove; and the socket shell is at least provided with a plastic cavity, the temperature sensor, the cooling fins and the terminals are all assembled in the plastic cavity, the socket shell limits the movement of the temperature sensor, the cooling fins and the terminals through the plastic cavity, and the connector has the effects of improving the assembly convenience of the temperature sensor and improving the safety in the use process of the connector.

Description

Technical Field

[0001] The utility model relates to the technical field of connector temperature monitoring, in particular to a high-voltage connector temperature sensing system. Background Art

[0002] High-voltage connectors tend to heat up after prolonged use, which can affect their performance. To monitor the operating temperature of high-voltage connectors, it is necessary to monitor the temperature of the connector terminals.

[0003] In the related art, the temperature of high-voltage connector terminals is generally monitored by metal terminal sensing. A through hole is opened on the terminal and a metal sensor is fixed to the terminal using screws or rivets in conjunction with the through hole. This method has a complex structure, is not easy to assemble, and requires opening a hole on the terminal, which will reduce the current-carrying capacity of the terminal and affect the safety of the high-voltage connector during use. Utility Model Content

[0004] The utility model provides a high-voltage connector temperature sensing system, which realizes the effects of convenient assembly and improved safety during the use of the high-voltage connector.

[0005] The utility model specifically adopts the following technical solutions:

[0006] A high-voltage connector temperature sensing system, comprising:

[0007] A terminal configured to be plug-mateable with a plug of a high-voltage connector;

[0008] A temperature sensor, wherein a probe of the temperature sensor is provided with a plastic housing, and an extension lead of the temperature sensor is used to connect to the PCB circuit of the high-voltage connector;

[0009] A heat sink is assembled on the terminal, the heat sink is provided with a mounting groove for accommodating the plastic housing, and a fixing piece for fixing the plastic housing is provided in the mounting groove;

[0010] The socket housing is provided with at least one plastic cavity, in which the temperature sensor, the heat sink and the terminal are all assembled.

[0011] Optionally, the fixing member is a plastic protrusion, and both side walls of the installation groove are provided with a plurality of plastic protrusions, and the plastic protrusions abut against the side walls of the plastic shell.

[0012] Optionally, a transition groove is provided on the side wall of the heat sink, the transition groove is connected to the mounting groove, and the extended lead of the temperature sensor is provided in the transition groove.

[0013] Optionally, the number of the heat sinks can be set to one or more.

[0014] Optionally, a positioning block is provided on the side wall of the terminal, and a positioning groove is provided on the side wall of the heat sink to be plugged into and matched with the positioning block.

[0015] Optionally, a limiting block is further provided on the side wall of the positioning block where the terminal is located, and the side wall of the heat sink abuts against the side wall of the limiting block, and the limiting block is used to prevent the heat sink from falling out of the plastic cavity.

[0016] Optionally, the sum of the heights of the heat sink and the terminal is consistent with the height of the plastic cavity.

[0017] Optionally, the inner walls on both sides of the plastic cavity are provided with limiting grooves for inserting terminals, the groove walls of the limiting grooves are provided with abutment blocks, the two side walls of the terminals are provided with abutment grooves that are plugged into the abutment blocks, the groove walls of the abutment grooves are integrally formed with a number of card blocks, the longitudinal cross-sectional area of ​​the card blocks decreases from the side close to the terminal to the side away from the terminal, and the tip of the card block is tightly against the side wall of the abutment block.

[0018] Optionally, a groove wall of the abutting groove is provided with a clearance groove on one side of the clamping block, and a side wall of the abutting block is provided with a protrusion, and the side wall of the protrusion abuts against the groove wall on the side of the clearance groove facing the opening of the plastic cavity.

[0019] Optionally, a groove wall of the limiting groove is integrally formed with a plurality of ridges, and the plurality of ridges abut against the side walls of the terminal.

[0020] The utility model provides a high-voltage connector temperature sensing system with the following beneficial effects:

[0021] 1. The plastic cavity on the socket housing is used to fix the terminals, heat sink and temperature sensor, which improves the convenience of assembly;

[0022] 2. By installing the NTC temperature sensor on the heat sink and close to the terminal surface, there is no need to open holes on the terminal, which helps avoid reducing the flow capacity of the terminal;

[0023] 3. The heat sink can reduce the operating temperature of the high-voltage connector terminals, which helps to improve the safety of the high-voltage connector during use.

[0024] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is an overall schematic diagram showing the positional relationship between the socket housing and the terminals in the embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the explosion structure between the heat sink and the terminal in an embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the explosion structure between the heat sink and the temperature sensor in an embodiment of the present application;

[0029] Figure 4 It is a cross-sectional structural diagram of the connection relationship between the terminal and the socket housing in the embodiment of the present application.

[0030] Figure numerals: 1. socket housing; 101. plastic cavity; 2. terminal; 3. plastic shell; 4. extension lead; 5. heat sink; 51. mounting slot; 52. transition slot; 6. plastic protrusion; 7. positioning block; 8. positioning slot; 9. limit block; 10. limit slot; 11. abutment block; 12. abutment slot; 13. clamping block; 14. clearance slot; 15. protrusion; 16. ridge. DETAILED DESCRIPTION

[0031] In order to help those skilled in the art better understand the present invention, 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 should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] This embodiment provides a high voltage connector temperature sensing system. Figure 1 The temperature sensing system includes a socket housing 1, a terminal 2, a heat sink 5 and a temperature sensor. Two plastic cavities 101 are provided on the socket housing 1 along its height direction.

[0034] Reference Figure 1 and Figure 2 , a terminal 2 and a temperature sensor are installed in each plastic cavity 101, and the terminal 2 is used to mate with the plug of the high-voltage connector. It should be noted that the number of heat sinks 5 can be one or more. In order to help enhance the heat dissipation effect of the terminal 2, in this embodiment, the top and bottom walls of the terminal 2 are provided with heat sinks 5, and the heat sink 5 is provided with a mounting groove 51. The temperature sensor in this embodiment adopts a plastic NTC temperature sensor. The probe of the temperature sensor is provided with a plastic shell 3, and the plastic shell 3 is assembled in the mounting groove 51. The mounting groove 51 is provided with a fixing piece for fixing the plastic shell 3. According to the on-site installation requirements, the temperature sensor can be installed in the mounting groove 51 of the heat sink 5 on one side of the terminal 2. After the plastic shell 3 is fixed in the mounting groove 51 by the fixing piece, the shell surface of the plastic shell 3 facing away from the terminal 2 is flush with the surface of the heat sink 5.

[0035] In this embodiment, the mounting groove 51 is a through groove that extends through the top and bottom walls of the heat sink 5, allowing the temperature sensor to effectively monitor the operating temperature of the terminal 2. To help improve the stability of the temperature sensor when mounted on the heat sink 5, a transition groove 52 is provided on the side wall of the heat sink 5 facing away from the terminal 2. The transition groove 52 is interconnected with the mounting groove 51. The transition groove 52 is a blind groove, and the bottom wall of the transition groove 52 is used to support the extension lead 4 of the temperature sensor. The extension lead 4 of the temperature sensor is positioned within the transition groove 52 at one end near the plastic housing 3. The transition groove 52 supports the junction between the plastic housing 3 of the temperature sensor and the extension lead 4, helping to prevent breakage between the plastic housing 3 and the extension lead 4, which could affect the safety of the temperature sensor during operation.

[0036] In this embodiment, the heat sink 5 and the socket housing 1 are both made of nylon. Nylon has good heat dissipation effect, which helps to cool the working temperature of the terminal 2; and nylon has good electrical properties, which is beneficial to improving the safety of the high-voltage connector working process.

[0037] Reference Figure 2 and Figure 3 The fixing parts are specifically plastic protrusions 6. A plurality of plastic protrusions 6 are arranged on the long side walls of the mounting groove 51. The plurality of plastic protrusions 6 are integrally injection-molded with the heat sink 5. After the plastic housing 3 of the temperature sensor is installed in the mounting groove 51, the plurality of plastic protrusions 6 on the groove walls on both sides of the mounting groove 51 abut against the side walls of the plastic housing 3, thereby stably fixing the plastic housing 3 in the mounting groove 51.

[0038] The temperature sensing system constructed with the above structure replaces the existing method of opening a through hole in the terminal 2 and fixing the temperature sensor with screws or rivets. This solution fixes the temperature sensor through the interaction force between the plastic bump 6 and the plastic shell 3, which not only improves the convenience of assembly, but also can reduce the operating temperature of the high-voltage connector through the heat sink 5, thereby improving the safety of the high-voltage connector during use.

[0039] Reference Figure 2 It should be noted that the sum of the height of the terminal 2 and the height of the two heat sinks 5 is consistent with the height of the plastic cavity 101 , and the movement of the temperature sensor, the heat sink 5 and the terminal 2 is restricted by the plastic cavity 101 .

[0040] In this embodiment, the top and bottom walls of the terminal 2 are provided with positioning blocks 7, and the side walls of the heat sink 5 are provided with positioning grooves 8. When the heat sink 5 is placed on the terminal 2, the positioning blocks 7 can be inserted into the positioning grooves 8, and then the positioning blocks 7 can be used to position the heat sink 5 on the terminal 2, which helps to improve the stability of the terminal 2 and the two heat sinks 5 fixed in the plastic cavity 101.

[0041] In order to prevent the heat sink 5 from falling out of the plastic cavity 101, the top wall and the bottom wall of the terminal 2 are provided with a limit block 9. The limit block 9 is used to be set on the terminal 2 and close to the side of the opening of the plastic cavity 101. After the heat sink 5 is assembled on the terminal 2, the side wall of the heat sink 5 close to the opening of the plastic cavity 101 is in contact with the limit block 9 facing away from the opening of the plastic cavity 101.

[0042] Refer to 2 and Figure 4 The inner walls of both long sides of the plastic cavity 101 are provided with limiting grooves 10. The limiting grooves 10 limit and guide the position of the terminal 2 when inserted into the plastic cavity 101. The groove wall of the limiting groove 10 is integrally formed with a plurality of ridges 16. The ridges 16 are arranged on the side close to the opening of the plastic cavity 101. The ridges 16 are arranged at equal intervals along the height direction of the limiting groove 10. The length direction of each ridge 16 is in the same direction as the depth direction of the limiting groove 10. The provision of the ridges 16 helps to reduce the contact area between the side wall of the terminal 2 and the groove wall of the limiting groove 10, which is beneficial to the heat dissipation of the terminal 2.

[0043] The groove walls on both sides of the limiting groove 10 are provided with abutment blocks 11, and the two side walls of the terminal 2 are provided with abutment grooves 12 that are plugged into and matched with the abutment blocks 11. In order to further enhance the stability of the heat sink 5 fixed in the plastic cavity 101, the groove wall of the abutment groove 12 is integrally formed with a plurality of clamping blocks 13. The longitudinal cross-sectional area of ​​the clamping blocks 13 decreases from the side close to the terminal 2 to the side away from the terminal 2. When the terminal 2 is inserted into the plastic cavity 101, the tip of the clamping block 13 is deformed and tightly abuts against the side wall of the abutment block 11, ultimately achieving an interference fit between the clamping block 13 and the side wall of the abutment block 11. The provision of the plurality of clamping blocks 13 increases the friction force of the abutment block 11 in the abutment groove 12, so as to stably fix the abutment block 11 in the abutment groove 12.

[0044] A protrusion 15 is provided on the side wall of the abutment block 11 and on the side away from the opening of the plastic cavity 101. The protrusion 15, the abutment block 11 and the socket housing 1 are integrally formed, and the groove wall of the abutment groove 12 is provided with a yield groove 14; as the terminal 2 moves in the limiting groove 10, the groove wall of the terminal 2 located at the yield groove 14 squeezes the protrusion 15 until the side wall of the protrusion 15 abuts against the groove wall of the yield groove 14 facing the opening of the plastic cavity 101, and several blocking blocks 13 on the groove wall of the abutment groove 12 tightly abut against the abutment block 11, thereby finally fixing the terminal 2 in the limiting groove 10.

[0045] It should be noted that, in this embodiment, the abutting block 11 , the locking block 14 and the protruding block 15 are sequentially arranged from the outside to the inside along the depth direction of the plastic cavity 101 .

[0046] The working principle of this embodiment is as follows: first, the plastic housing 3 of the temperature sensor is placed in the mounting groove 51 of the heat sink 5, and the extended lead 4 is aligned with the transition groove 52. By pressing the plastic housing 3, the several plastic protrusions 6 on the wall of the mounting groove 51 abut against the side wall of the plastic housing 3, so that the temperature sensor is mounted on the heat sink 5; secondly, the heat sink 5 is installed on the top and bottom walls of the terminal 2, and the position between the heat sink 5 and the terminal 2 is positioned by the positioning block 7, the positioning groove 8 and the limit block 9; then Then, the terminal 2 is inserted into the limiting groove 10. As the terminal 2 is inserted, several clamping blocks 13 are deformed and tightly attached to the side walls of the abutting block 11 until the abutting groove 12 on the terminal 2 is fully plugged into and matched with the abutting block 11. The abutting block 11 is stably fixed in the abutting groove 12 by several clamping blocks 13. At the same time, the side wall of the protrusion 15 abuts against the groove wall of the yield groove 14 opening toward the plastic cavity 101, so as to stably fix the terminal in the limiting groove 10, and finally the terminal 2 and the two heat sinks 5 are inserted into the plastic cavity 101.

[0047] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A high voltage connector temperature sensing system, characterized in that: include: A terminal (2) configured to be mated with a plug of a high voltage connector; A temperature sensor, wherein a plastic housing (3) is provided on a probe of the temperature sensor, and an extension lead (4) of the temperature sensor is used to connect to a PCB circuit of a high-voltage connector; A heat sink (5) is assembled on the terminal (2), the heat sink (5) is provided with a mounting groove (51) for accommodating the plastic housing (3), and a fixing piece for fixing the plastic housing (3) is provided in the mounting groove (51); The socket housing (1) is provided with at least one plastic cavity (101), wherein the temperature sensor, the heat sink (5) and the terminal (2) are all assembled in the plastic cavity (101).

2. The temperature sensing system according to claim 1, characterized in that: The fixing member is a plastic convex point (6), and the groove walls on both sides of the installation groove (51) are each provided with a plurality of plastic convex points (6), and the plastic convex points (6) abut against the side wall of the plastic shell (3).

3. The temperature sensing system according to claim 1, characterized in that: A transition groove (52) is provided on the side wall of the heat sink (5), the transition groove (52) is connected to the mounting groove (51), and the extended lead (4) of the temperature sensor is arranged in the transition groove (52).

4. The temperature sensing system according to claim 1, characterized in that: The number of the heat sink (5) can be set to one or more.

5. The temperature sensing system according to claim 1, characterized in that: The side wall of the terminal (2) is provided with a positioning block (7), and the side wall of the heat sink (5) is provided with a positioning groove (8) that is plugged into and matched with the positioning block (7).

6. The temperature sensing system according to claim 5, characterized in that: The terminal (2) is located on a side wall of the positioning block (7) and is further provided with a limiting block (9). The side wall of the heat sink (5) abuts against the side wall of the limiting block (9). The limiting block (9) is used to prevent the heat sink (5) from falling out of the plastic cavity (101).

7. The temperature sensing system according to claim 1, wherein: The sum of the heights of the heat sink (5) and the terminal (2) is consistent with the height of the plastic cavity (101).

8. The temperature sensing system according to claim 1, wherein: The inner walls on both sides of the plastic cavity (101) are provided with limiting grooves (10) for inserting the terminal (2), the groove walls of the limiting grooves (10) are provided with abutment blocks (11), the two side walls of the terminal (2) are provided with abutment grooves (12) that are plugged into and matched with the abutment blocks (11), the groove walls of the abutment grooves (12) are integrally formed with a plurality of card blocks (13), the longitudinal cross-sectional area of ​​the card blocks (13) decreases from the side close to the terminal (2) to the side away from the terminal (2), and the tip of the card block (13) is tightly against the side wall of the abutment block (11).

9. The temperature sensing system according to claim 8, characterized in that: A groove wall of the abutting groove (12) is provided with a clearance groove (14) on one side of the clamping block (13), and a side wall of the abutting block (11) is provided with a protrusion (15), and the side wall of the protrusion (15) abuts against the groove wall of the clearance groove (14) on the side facing the opening of the plastic cavity (101).

10. The temperature sensing system according to claim 8, characterized in that: The groove wall of the limiting groove (10) is integrally formed with a plurality of ridges (16), and the plurality of ridges (16) abut against the side wall of the terminal (2).

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