CN112563831A - Terminal assembly with temperature sensor - Google Patents
Terminal assembly with temperature sensor Download PDFInfo
- Publication number
- CN112563831A CN112563831A CN201910993807.2A CN201910993807A CN112563831A CN 112563831 A CN112563831 A CN 112563831A CN 201910993807 A CN201910993807 A CN 201910993807A CN 112563831 A CN112563831 A CN 112563831A
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- CN
- China
- Prior art keywords
- terminal
- protective cover
- cover
- temperature sensor
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
Abstract
The present invention provides a terminal assembly, comprising: a terminal having a terminal end to which a wire is attached; and a temperature sensor configured to measure a temperature of the terminal, wherein the terminal assembly further comprises a protective cover covering at least a portion of the terminal; the protective cover is integrally provided with a sensor fixing portion in which the temperature sensor is fixed, the temperature sensor being disposed in close proximity to an outer surface of the terminal when the protective cover is fitted to the terminal. By adopting the terminal assembly, the reliability of the temperature sensor is improved, the assembly is convenient, the process flow is simplified, and the production cost is lower.
Description
Technical Field
The present invention relates to the field of electrical connections, and more particularly, to a terminal assembly with a temperature sensor.
Background
The direct current quick charging interface is widely used in the field of electric automobiles. For the direct current quick charging interface, the phenomenon of overhigh temperature can occur due to larger current in the charging process. In contrast, a temperature sensor is provided on the high-current power supply terminal, and the terminal heating temperature can be monitored in real time.
Currently, there are two common ways of fixing the temperature sensor. One is with temperature sensor laminating on the terminal, and it is fixed to tie up through the heat shrinkage bush of outside parcel, but the shortcoming that this kind of fixed mode exists lies in, the interface uses the back for a long time, and the easy ageing crackle that takes place of heat shrinkage bush damages the piece, leads to temperature sensor to deviate from. The other is to punch the terminal of the interface and put the head of the temperature sensor into the terminal hole, but the fixing mode has the defects that the electrical clearance between the two is small, and the insulation and voltage resistance performance is invalid due to the abrasion of the temperature sensor after long-time use. The final result of both fixing methods is that the terminal temperature cannot be detected in real time. Therefore, there is still a need for improvement of the structure of fixing the temperature sensor to the existing terminal.
Disclosure of Invention
To overcome the above-mentioned deficiencies of the prior art, the present invention provides a terminal assembly comprising: a terminal having a terminal end to which a wire is attached; and a temperature sensor arranged to measure a temperature of the terminal, wherein the terminal assembly further comprises a protective cover covering at least a portion of the terminal; the protective cover is provided with a sensor fixing portion through which the temperature sensor is fixed to the protective cover, the temperature sensor being disposed adjacent to an outer surface of the terminal.
According to one aspect of the invention, the sensor fixing portion is a card slot portion having an insertion opening for inserting the temperature sensor and a contact opening arranged to allow the sensor to reach the terminal, at least one surface of the terminal being accessible by the sensor via the contact opening.
According to still another aspect of the present invention, the terminal is provided with a bonding region, the wire is attached to the terminal of the terminal by bonding at the bonding region, the protective cover is fitted to the terminal and the bonding region is accommodated in the cavity of the protective cover, and the card slot portion is adjacent to the bonding region.
According to a further aspect of the invention, the pocket portion is provided with a fixing catch at the insertion opening, the fixing catch extending inwardly from an edge of the insertion opening of the pocket portion.
According to still another aspect of the present invention, the protective cover includes first and second cover portions, and forms terminal holes through which the terminals are led out and wire holes through which the wires are led out, the first and second cover portions forming a part of the terminal holes, respectively; and the first cover part and the second cover part form a part of the wire guide hole, respectively.
According to yet another aspect of the invention, the first cover portion and the second cover portion are attached together by a hinge mechanism.
According to yet another aspect of the invention, the first cover part and the second cover part are engaged by a snap-fit mechanism.
According to still another aspect of the present invention, the card slot portion is provided on the first cover portion, and the contact opening of the card slot portion is flush with the terminal hole, and at least one surface of the terminal is formed transversely to a direction in which the terminal extends, the at least one surface extending from the terminal hole to the contact opening when the terminal is mounted with the protective cover.
According to still another aspect of the present invention, the sensor fixing part is integrally formed on the protective cover, and the protective cover is made of a nylon material.
By adopting the structure of the terminal component, the reliability of the temperature sensor is improved, the assembly is convenient, the process flow is simplified, and the production cost is lower.
The terminal protective cover is made of nylon materials and is provided with the buckle hinge structure, so that the terminal protective cover still has good performance after long-term high-temperature aging, and the temperature sensor is ensured to be firmly fixed and cannot be separated.
The temperature sensor is attached to the terminal welding area, and the temperature of the terminal can be accurately and quickly detected at the most sensitive place of temperature change.
For the use of paired terminal assemblies, the use of the protective cover effectively increases the creepage distance and reduces the risk that the high-voltage terminal is instantaneously electrified to generate high-voltage electric arcs in the large-current transmission process.
Drawings
For a more complete understanding of the present invention, reference is made to the following description of exemplary embodiments taken in conjunction with the accompanying drawings, in which:
fig. 1 is a perspective view showing an exploded state of a terminal assembly according to a preferred embodiment of the present invention.
Fig. 2 is a perspective view showing an assembled state of a terminal assembly according to a preferred embodiment of the present invention.
Fig. 3 illustrates a cross-sectional view of a portion of a terminal assembly in accordance with a preferred embodiment of the present invention.
Fig. 4 is a perspective view showing an opened state of a protective cover according to a preferred embodiment of the present invention.
Fig. 5 is a perspective view showing a closed state of a protective cover according to a preferred embodiment of the present invention.
List of reference numerals
10 terminal assembly
20 terminal
21 terminal
23 welding area
25 surface
30 wire
50 protective cover
51 first cover part
52 second cover part
56 terminal hole
57 wire guide hole
58 hinge mechanism
59 buckling mechanism
60 clamping groove part
61 insertion opening
62 contact opening
63 fixed buckle
70 temperature sensor
Detailed Description
The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the invention.
According to a preferred embodiment of the present invention, the terminal assembly 10 provided with the temperature sensor 70 is particularly suitable for a dc quick charging interface in an electric vehicle. In a dc quick fill interface, the terminal assemblies 10 are typically used in pairs. It should be understood that the terminal assembly 10 of the present invention is not limited to this use and may be used with other interface connectors provided with a temperature sensor 70.
As shown in fig. 1 and 2, the terminal assembly 10 according to the present invention includes a terminal 20 made of a conductive material. As shown in fig. 1, one end of the terminal 20 is configured as a wire end 21 for connection to a wire 30, while the other end of the terminal 20 is a mating end that mates with a mating terminal assembly 10. In the preferred embodiment, the terminal 21 of the terminal 20 is provided with a bonding pad 23, and the conductive core of the wire 30 is secured to the terminal 21 by soldering. Land 23 may be a flat surface on terminal 21 of the terminal.
In the preferred embodiment, the wire 30 is connected to the terminal 20 at a 90 degree angle to form an L-shaped terminal wire assembly, i.e., the terminal 20 extends in the X direction shown in fig. 1, and the wire 30 extends in the Y direction shown in fig. 1, the X direction being substantially perpendicular to the Y direction.
The terminal assembly 10 further comprises a temperature sensor 70 for measuring the temperature of the terminal 20, in particular at the terminal end 21 of the terminal 20. Preferably, the temperature sensor 70 may employ a conventional touch sensor. Further, as shown in fig. 1, the temperature sensor 70 is also connected to a cable that transmits the measurement result.
Specifically, the terminal assembly 10 according to the present invention further includes a protection cover 50, the protection cover 50 being integrally provided with a sensor fixing portion that fixes the temperature sensor 70 to the protection cover 50 such that the temperature sensor 70 is disposed adjacent to an outer surface of the terminal 20. In other words, the protective cover 50 is a member for keeping the temperature sensor 70 arranged in close proximity to the terminals. More preferably, the protective cover 50 has the temperature sensor 70 disposed in direct contact with an outer surface of the terminal 20.
Next, the structure of the protective cover 50 according to the present invention will be described in detail with reference to fig. 4 and 5.
The protective cover 50 of fig. 4 and 5 is particularly suitable for an L-shaped terminal wire assembly as shown in fig. 1. As shown in fig. 5, the protective cover 50 is formed with terminal holes 56 and wire holes 57, the terminal holes 56 being for passing out terminals, and the wire holes 57 being for passing out wires. For the L-shaped terminal wire assembly, the terminal holes 56 and the wire holes 57 on the protective cover 50 are provided on both surfaces arranged in the 90-degree direction, respectively. In the exemplary embodiment shown in fig. 5, the terminal openings 56 are rectangular in shape, while the wire guide openings 57 are circular in shape.
Further, the protective cover 50 includes a first cover part 51 and a second cover part 52, and the two cover parts 51, 52 are attached together by a hinge mechanism 58 (see fig. 3). As shown in fig. 5, the hinge mechanism 58 is provided on a side wall of the protective cover 50 opposite to the terminal hole 56, and as seen from the opened state of the protective cover 50 of fig. 4, the first cover part 51 forms a part of each of the terminal hole 56 and the wire hole 57, and the second cover part 52 forms another part of each of the terminal hole 56 and the wire hole 57. Thus, when the protective cover 50 is separated from the two cover parts 51 and 52 as the hinge mechanism 58 is opened, the terminal holes 56 and the wire holes 57 are in an opened state to receive the terminals 20 and the wires 30, respectively, and when the two cover parts 51 and 52 are closed to close the protective cover 50 as the hinge mechanism 58 is closed, the protective cover 50 can be fixed with respect to the terminal wire assembly.
The protective cover 50 is further provided with a snap mechanism 59 for engaging the first and second cover parts 51, 52 to keep the protective cover 50 in its mounted state. As shown in fig. 4 and 5, in the preferred embodiment, the latching mechanism 59 includes a first latch disposed on a side wall of the protective cover 50 opposite the wire guide 57 and a second latch disposed on a side wall of the protective cover 50 adjacent the wire guide 57.
In other alternative embodiments, the hinge mechanism 58 may also be disposed on the side wall of the protective cover 50 opposite the wire guide 57. In a further alternative embodiment, the protective cover 50 can also be constructed in two halves which are completely open, so that the terminal holes 56 and the wire guides 57 are on both halves at the same time, respectively.
In the preferred embodiment, the sensor fixing portion is integrally formed on the protective cover 50, and preferably, the sensor fixing portion is integrally provided on a side wall of the first cover portion 51. The sensor fixing portion fixes the sensor by means of snap-in fixing.
As shown in fig. 5, the fixing portion is configured in the form of a bayonet portion 60 having an insertion opening 61 for inserting the temperature sensor 70, and a contact opening 62 for facilitating the sensor to contact the terminal, at least one surface of the terminal 20 being accessible from the contact opening 62. In a preferred embodiment, the slot portion 60 protrudes from a side wall of the first cover 51, and the extending direction of the slot portion 60 is substantially parallel to the extending direction of the terminal 20. As shown in fig. 5, it is preferable that the contact opening 62 is provided substantially flush with the terminal hole 56, and the insertion opening 61 is provided to a position substantially halfway of the side wall, the opening 61 being formed toward the hinge mechanism 58 side and outside the side wall of the protective cover 50. Further, the wall of the pocket portion 60 forms a plurality of hollowed-out portions.
Further, as shown in fig. 3, the card slot portion 60 is further provided with a fixing catch 63 at the insertion opening 61, the fixing catch 63 is formed to protrude inward from the inner wall of the card slot portion 60, and when the temperature sensor 70 is inserted into the card slot portion 60, the fixing catch 63 engages the rear end face of the temperature sensor 70 to fix it in the card slot portion 60 without coming out of the insertion opening 61. Preferably. A surface of the fixing catch 63 facing the insertion opening 61 is formed with an inclined surface to facilitate the insertion of the temperature sensor 70.
Preferably, the protective cover 50 is molded from a nylon material, and the bayonet portion 60 is integrally molded on the protective cover 50. The protective cover 50 is made of nylon and has the hinge mechanism 58, so that the terminal assembly 10 can be ensured to have good performance even after being used at high temperature, and the temperature sensor 70 can be firmly fixed in place and cannot be detached.
Fig. 3 shows a cross-sectional view of a portion of the terminal assembly 10 with the protective cover 50 mounted to the terminal and incorporating the temperature sensor 70. In the preferred embodiment, the protective cover 50 is overlaid onto the terminal wire assembly from the terminal 21 where the terminal 20 is connected to the wire 30, such that the entire bonding pad 23 is received within the cavity formed by the protective cover 50.
Further, as shown in fig. 3, the terminal 20 is formed with a surface 25 which is in direct contact with the temperature sensor 70, and the distance of the surface from the land 23 is small. In a preferred embodiment, the surface 25 is formed transversely to the direction of extension X of the terminal 20 and, in the mounted state, is immediately adjacent to the contact opening 62 of the card slot portion 60. When the temperature sensor 70 is inserted in the bayonet portion 60, the end of the temperature sensor 70 is brought into contact with the lateral surface 25 of the above-mentioned terminal 20 through the contact opening 62. Advantageously, the land 23 is the region where the entire terminal 20 is most sensitive to temperature changes, and therefore, the temperature can be measured close to this region, contributing to the temperature sensor 70 accurately and quickly grasping the temperature change of the terminal 20.
For the application of a charging interface for an electric vehicle, two terminal assemblies 10 may be used side-by-side in pairs to provide the two terminals of the interface connector. Since the terminal assemblies 10 each include the protection cover 50, when the two terminals are arranged side by side, the arrangement of the protection covers 50 increases the creepage distance between the two terminals 20, and reduces the risk that the high voltage terminal is instantaneously turned on to generate a high voltage arc in the process of transmitting a large current.
With the terminal assembly 10 according to the present invention, the reliability of the installation of the temperature sensor 70 is improved, and the assembly is convenient, the process flow is simplified, and the production cost is low.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (10)
1. A terminal assembly, comprising:
a terminal having a terminal end to which a wire is attached; and
a temperature sensor disposed adjacent to the terminal and arranged to measure a temperature of the terminal,
the terminal assembly is characterized by further comprising a protective cover, wherein the protective cover covers at least one part of the terminal; the protective cover is provided with a sensor fixing portion through which the temperature sensor is fixed to the protective cover, and the temperature sensor is disposed closely adjacent to an outer surface of the terminal when the protective cover is assembled to the terminal.
2. The terminal assembly of claim 1, wherein said sensor-securing portion is a slot portion having a contact opening through which at least one surface of said terminal is accessible to said sensor.
3. The terminal assembly according to claim 2, wherein said card slot portion further has an insertion opening for inserting said temperature sensor.
4. The terminal assembly of claim 3, wherein said terminal is provided with a bonding pad, a wire is connected to said terminal of said terminal by soldering at said bonding pad, said protective cover is fitted to said terminal and receives said bonding pad within a cavity of said protective cover, said card slot portion is adjacent to said bonding pad.
5. The terminal assembly of claim 3, wherein said slot portion is provided with a securing catch at said insertion opening, said securing catch extending inwardly from an edge of said insertion opening of said slot portion.
6. The terminal assembly of claim 3, wherein said protective cover includes a first cover portion and a second cover portion and defines terminal holes through said terminals and wire guide holes through said wires,
the first cover portion and the second cover portion respectively form a part of the terminal hole;
and the first cover and the second cover each form a portion of the wire guide.
7. The terminal assembly of claim 6, wherein said first cover portion and said second cover portion are attached together by a hinge mechanism.
8. The terminal assembly according to claim 6 or 7, wherein said first and second cover portions are engaged by a snap-fit mechanism.
9. The terminal assembly of claim 6, wherein said slot portion is disposed on said first cover portion, and said contact opening of said slot portion is flush with said terminal hole,
and the at least one surface of the terminal is formed transverse to a direction in which the terminal extends, the at least one surface extending from the terminal hole to the contact opening when the terminal is mounted with the protective cover.
10. The terminal assembly of claim 1, wherein said sensor-fixing portion is integrally formed on said protective cover, and said protective cover is made of a nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993807.2A CN112563831A (en) | 2019-10-18 | 2019-10-18 | Terminal assembly with temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993807.2A CN112563831A (en) | 2019-10-18 | 2019-10-18 | Terminal assembly with temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112563831A true CN112563831A (en) | 2021-03-26 |
Family
ID=75030288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910993807.2A Pending CN112563831A (en) | 2019-10-18 | 2019-10-18 | Terminal assembly with temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112563831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070602A1 (en) * | 2021-10-29 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Connector and electric device |
-
2019
- 2019-10-18 CN CN201910993807.2A patent/CN112563831A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070602A1 (en) * | 2021-10-29 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Connector and electric device |
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