CN219161479U - Terminal temperature measurement structure and connector - Google Patents
Terminal temperature measurement structure and connector Download PDFInfo
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- CN219161479U CN219161479U CN202223537993.5U CN202223537993U CN219161479U CN 219161479 U CN219161479 U CN 219161479U CN 202223537993 U CN202223537993 U CN 202223537993U CN 219161479 U CN219161479 U CN 219161479U
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- terminal
- heat conducting
- circuit board
- temperature
- temperature sensor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
A terminal temperature measurement structure and a connector belong to the technical field of manufacturing of electric energy transmission devices, and comprise a terminal 1, a circuit board 2, a heat conduction piece 3, a heat conduction elastic sheet 4 and a temperature sensor 5; at least one mounting hole is formed in the circuit board (2); the terminal 1 passes through the mounting hole; the heat conducting piece 3 is arranged on the circuit board 2 and surrounds the mounting hole; the heat conducting spring piece 4 is arranged between the terminal 1 and the heat conducting piece 3, and the heat conducting spring piece 4 is elastically deformed to apply elastic force to the terminal 1; the temperature sensor 5 is provided on the circuit board 2 for measuring the temperature of the heat conductive member 3. The terminal passes through heat conduction shell fragment and goes out the temperature transfer, and heat conduction shell fragment has elasticity, can play the effect of heat conduction, can be again because of the elasticity that it had better laminating on the terminal when receiving the extrusion to guarantee that heat transfer is more abundant.
Description
Technical Field
The utility model belongs to the technical field of manufacturing of electric energy transmission devices, and particularly relates to a terminal temperature measurement structure and a connector.
Background
With the rapid development of new energy technology, the number of new energy automobiles is also increasing. Charging gun heads and charging seats of current new energy automobiles can be provided with charging terminals with opposite plug structures. When an automobile is charged, the current at the charging terminal is rapidly increased, and the heating value is rapidly increased, so that for safety, many manufacturers can set a temperature measuring device at the charging terminal. The temperature sensor is attached to the terminal to measure the temperature, but the design structure is theoretically that the temperature sensor is attached to the terminal, and in practical situations, gaps which cannot be seen by naked eyes exist between the terminal and the temperature sensor, so that the deviation of the temperature measurement is large, the temperature loss is unavoidable in the process, the temperature measurement is not accurate enough, and an additional space is needed to place the heat conducting piece. Meanwhile, if the temperature sensor is in direct contact with the terminal, the current on the terminal may easily damage the temperature sensor. Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
An object of the present utility model is to provide a terminal temperature measurement structure. Solves the problem of inaccurate temperature measurement caused by insufficient bonding degree between the temperature sensor and the terminal.
A terminal temperature measuring structure comprises at least one terminal, a circuit board, a heat conducting piece, a heat conducting elastic piece and a temperature sensor;
at least one mounting hole is formed in the circuit board;
the terminal passes through the mounting hole;
the heat conducting piece is arranged on the circuit board and surrounds the mounting hole;
the heat conducting elastic sheet is arranged between the terminal and the heat conducting piece, and the heat conducting elastic sheet is elastically deformed to apply elastic force to the terminal;
the temperature sensor is arranged on the circuit board and is used for measuring the temperature of the heat conducting piece.
The terminal is provided with a radial bulge, the radial bulge is provided with a temperature measuring surface parallel to the surface of the circuit board, and the heat conducting elastic sheet is arranged on the temperature measuring surface.
The heat conducting piece is flat, one surface of the heat conducting piece is connected with the circuit board, and the other surface of the heat conducting piece is abutted to the heat conducting elastic piece.
The circuit board is provided with a groove, and the heat conducting piece is arranged in the groove.
The circuit board is provided with a first surface and a second surface which are opposite, the temperature sensor is arranged on the first surface, the heat conducting piece is arranged on the second surface, and the projection of the temperature sensor on the first surface is at least partially overlapped with the projection of the heat conducting piece on the first surface.
The minimum distance between the temperature sensor and the heat conducting piece is not more than 6.2mm.
The temperature sensor is a patch type temperature sensor or an NTC temperature sensor or a PTC temperature sensor.
And heat conduction silica gel is arranged between the heat conduction piece and the circuit board.
A connector, characterized in that: the circuit board is fixed on the terminal support, the terminal is clamped on the terminal support, and the heat conduction elastic sheet is abutted between the heat conduction piece and the terminal.
The temperature measuring device also comprises a shell, wherein the terminal bracket and the terminal temperature measuring structure are arranged in the shell.
The beneficial effects of the utility model are as follows: 1. the terminal passes through heat conduction shell fragment and goes out the temperature transfer, and heat conduction shell fragment has elasticity, can play the effect of heat conduction, can be again because of the elasticity that it had better laminating on the terminal when receiving the extrusion to guarantee that heat transfer is more abundant.
2. The heat conducting piece is at least partially inlaid in the circuit board, so that the heat conducting piece can be fixed relative to the heat conducting elastic piece, the temperature sensor is arranged on the circuit board, and the temperature of the terminal can be obtained by measuring the temperature of the heat conducting piece without contacting with the heat conducting piece but at a position close to the heat conducting piece.
3. 301H stainless steel has excellent toughness, makes into the heat conduction shell fragment that has elasticity with it, thereby can provide sufficient elasticity when receiving the extrusion and laminate compactly with terminal and heat conduction spare to guarantee that temperature sensor measuring temperature value is more accurate.
4. The heat conduction silica gel can assist the heat transfer of the heat conduction piece and the circuit board, improves the effective contact area, increases the adhesive force, and avoids the reduction of the effective contact area caused by vibration or the reduction of the heat conduction efficiency under the condition of generating an air gap.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1 is a schematic structural diagram of a terminal temperature measurement structure according to the present utility model.
Fig. 2 is a schematic diagram of a temperature sensor with a terminal temperature measuring structure according to the present utility model.
Fig. 3 is a schematic diagram of a heat conducting spring plate of a terminal temperature measuring structure according to the present utility model.
FIG. 4 is a schematic diagram of a temperature measuring surface of a terminal temperature measuring structure according to the present utility model.
Fig. 5 is a schematic structural view of a connector according to the present utility model.
Fig. 6 is a schematic structural view of another connector according to the present utility model.
The figures are marked as follows:
1-terminal, 11-radial bulge, 111-temperature measuring surface, 2-circuit board, 3-heat conduction piece, 4-heat conduction shell fragment, 5-temperature sensor, 6-terminal support, 7-casing.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
A terminal temperature measuring structure, as shown in figures 1, 2 and 3, comprises at least one terminal 1, a circuit board 2, a heat conducting piece 3, a heat conducting spring piece 4 and a temperature sensor 5;
at least one mounting hole is formed in the circuit board 2;
the terminal 1 passes through the mounting hole;
the heat conducting piece 3 is arranged on the circuit board 2 and surrounds the mounting hole;
the heat conducting spring piece 4 is arranged between the terminal 1 and the heat conducting piece 3, and the heat conducting spring piece 4 is elastically deformed to apply elastic force to the terminal 1;
the temperature sensor 5 is provided on the circuit board 2 for measuring the temperature of the heat conductive member 3.
In a conventional temperature measurement method of a charging structure for a charging car, a temperature sensor 5 is generally disposed on a surface of a terminal 1, and the temperature sensor 5 directly measures the temperature of the terminal 1. However, there are many gaps between the temperature sensor 5 and the terminal 1 which are difficult to see by naked eyes, so that the actual contact area of the temperature sensor 5 and the terminal 1 is far smaller than the nominal contact area, and inaccurate temperature measurement is caused. Meanwhile, if the surface of the temperature sensor 5 is a conductor, the current on the terminal 1 flows through the temperature sensor 5, which easily causes damage to the temperature sensor 5. The heat conducting elastic sheet 4 has elasticity, not only can play a role in heat conduction, but also can be better attached to the terminal 1 when being extruded due to the elasticity, thereby ensuring more sufficient heat transfer. The heat conducting elastic sheet 4 can be made of metal with good heat conducting performance, and can be specifically made of sheet metal, and the sheet metal is bent or twisted at a small angle, so that the sheet metal can generate elasticity when being pressed. The heat conducting spring piece 4 transfers heat to the heat conducting piece 3, and the temperature sensor 5 is arranged on the circuit board 2, and is not in contact with the heat conducting piece 3 but is close to the heat conducting piece 3, so that the temperature of the terminal 1 can be obtained by measuring the temperature of the heat conducting piece 3.
In some embodiments, the terminal 1 has a radial protrusion 11, the radial protrusion 11 has a temperature measuring surface 111 parallel to the board surface of the circuit board 2, and the heat conducting spring plate 4 is disposed on the temperature measuring surface 111. As shown in fig. 3 and 4, the heat conducting elastic sheet 4 is pressed on the temperature measuring surface 111, and the heat conducting member 3 is pressed on the heat conducting elastic sheet 4 again by means of elasticity to be attached to the temperature measuring surface for measuring the temperature by the temperature sensor 5.
In some embodiments, the heat conducting member 3 is flat, one surface of the heat conducting member is connected to the circuit board, and the other surface of the heat conducting member abuts against the heat conducting spring plate 4. The flat heat conducting piece 3 occupies smaller space, has less heat loss, and can enable the temperature measurement of the temperature sensor 5 to be more accurate.
Further, the circuit board 2 has a groove, and the heat conductive member 3 is disposed in the groove. The heat conducting piece 3 is arranged in the groove, so that the heat conducting piece can be installed more firmly, and when the temperature sensor 5 is arranged on the other surface of the circuit board 2, the heat conducting piece 3 can be closer to the temperature sensor 5, so that the temperature measurement is more accurate.
In some embodiments, the circuit board 2 has a first surface and a second surface opposite to each other, the temperature sensor 5 is disposed on the first surface, the heat conductive member 3 is disposed on the second surface, and a projection of the temperature sensor 5 on the first surface at least partially overlaps a projection of the heat conductive member 3 on the first surface. That is, the temperature sensor 5 and the heat conductive member 3 are respectively provided on both sides of the circuit board 2. Many times, the space near the terminal 1 is very limited, the circuit arrangement is very inconvenient, and the temperature sensor 5 and the heat conducting member 3 are respectively arranged on two sides of the circuit board, so that the temperature sensor 5 has more routing choices and can adapt to more use environments.
In some embodiments, the minimum distance of the temperature sensor 5 from the heat conducting member 3 is not more than 6.2mm. If the distance between the temperature sensor 5 and the heat conductive member 3 is too large, the temperature measured by the temperature sensor 5 is likely to be inaccurate. For this reason, the inventors conducted a related experiment, which was to select the same terminal 1, circuit board 2, heat conducting spring piece 4, heat conducting member 3 and temperature sensor 5, select different distances between temperature sensor 5 and heat conducting member 3 to set, measure the temperature of terminal heat conducting member 3, and take absolute value from the actual temperature, the absolute value is greater than 0.5 ℃ to be unqualified, and the results are recorded in table 1.
Table 1: influence of minimum distance of temperature sensor 5 and heat conducting member 3 on temperature measurement
As can be seen from table 1, after the minimum distance between the temperature sensor 5 and the heat conductive member 3 is greater than 6.2mm, the difference between the measured temperature of the heat conductive member 3 and the actual temperature is greater than 0.5 ℃. The inventors therefore prefer that the minimum distance of the temperature sensor 5 from the heat conducting member 3 is not more than 6.2mm.
In some embodiments, the heat conducting spring plate 4 is made of 301H stainless steel. The 301H stainless steel has good heat conductivity, and more importantly, the 301H stainless steel has excellent toughness, and is manufactured into the elastic heat conduction elastic sheet 4, so that enough elastic force can be provided when the heat conduction elastic sheet is extruded, and the heat conduction elastic sheet is tightly attached to the terminal 1 and the heat conduction piece 3, so that the temperature value measured by the temperature sensor 5 is more accurate.
In some embodiments, the temperature sensor 5 is a patch type temperature sensor or an NTC temperature sensor or a PTC temperature sensor. The patch type temperature sensor is specially used for measuring the surface temperature of an object, has high measurement accuracy, high response speed and small volume, and is suitable for various environments with limited space. The NTC temperature sensor or the PTC temperature sensor has the advantages of small volume, capability of measuring gaps which cannot be measured by other thermometers, convenient use and resistance value being arbitrarily selected from 0.1-100 kΩ; easy processing into complex shape, mass production, good stability and strong overload capacity, the method is suitable for the product with small required volume and stable performance of the adapter.
In some embodiments, a thermally conductive silicone is disposed between the thermally conductive member 3 and the circuit board 2. The heat conduction silica gel can assist the heat transfer between the heat conduction piece 3 and the circuit board 2, improves the effective contact area, increases the adhesive force, and avoids the reduction of the effective contact area caused by vibration or the reduction of the heat conduction efficiency under the condition of generating an air gap.
The connector comprises a terminal bracket 6 and the terminal temperature measuring structure, wherein the circuit board 2 is fixed on the terminal bracket 6, the terminal 1 is clamped on the terminal bracket 6, and the heat conducting elastic piece 4 is abutted between the heat conducting piece 3 and the terminal 1.
During installation, the terminal bracket 6 can be connected with the circuit board 2 in a screwing mode, screw holes are respectively formed in the circuit board 2 and the first terminal bracket 6, the terminal bracket 6 is connected with the circuit board 2 by using bolts to penetrate through the screw holes, the bolts are further screwed, at this time, the heat conducting elastic sheet 4 is deformed, and elasticity is further generated to be applied to the terminal 1, so that the temperature of the terminal 1 measured by the temperature sensor 5 is ensured to be more accurate.
Further, the device also comprises a shell 7, and the terminal bracket 6 and the terminal temperature measuring structure are arranged in the shell 7. As shown in fig. 6, the casing 7 is provided with structures for fixing the terminal bracket 6 and the circuit board 2, and when the terminal bracket 6 and the circuit board 2 are fixed, the heat conducting elastic sheet 4 is in a deformed state, and then elastic force is generated to be applied to the terminal 1, so that the temperature of the terminal 1 measured by the temperature sensor 5 is ensured to be more accurate.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. A terminal temperature measurement structure, its characterized in that: comprises at least one terminal (1), a circuit board (2), a heat conducting piece (3), a heat conducting elastic piece (4) and a temperature sensor (5);
at least one mounting hole is formed in the circuit board (2);
the terminal (1) passes through the mounting hole;
the heat conducting piece (3) is arranged on the circuit board (2) and surrounds the mounting hole;
the heat conduction elastic sheet (4) is arranged between the terminal (1) and the heat conduction piece (3), and the heat conduction elastic sheet (4) is elastically deformed to apply elastic force to the terminal (1);
the temperature sensor (5) is arranged on the circuit board (2) and is used for measuring the temperature of the heat conducting piece (3).
2. A terminal temperature measurement structure according to claim 1, wherein: the terminal (1) is provided with a radial bulge (11), the radial bulge (11) is provided with a temperature measuring surface (111) parallel to the surface of the circuit board (2), and the heat conducting elastic sheet (4) is arranged on the temperature measuring surface (111).
3. A terminal temperature measurement structure according to claim 1, wherein: the heat conducting piece (3) is flat, one surface of the heat conducting piece is connected with the circuit board (2), and the other surface of the heat conducting piece is abutted against the heat conducting elastic piece (4).
4. A terminal temperature measurement structure according to claim 3, wherein: the circuit board (2) is provided with a groove, and the heat conducting piece (3) is arranged in the groove.
5. A terminal temperature measurement structure according to claim 1, wherein: the circuit board (2) is provided with a first surface and a second surface which are opposite, the temperature sensor (5) is arranged on the first surface, the heat conducting piece (3) is arranged on the second surface, and the projection of the temperature sensor (5) on the first surface is at least partially overlapped with the projection of the heat conducting piece (3) on the first surface.
6. A terminal temperature measurement structure according to claim 1, wherein: the minimum distance between the temperature sensor (5) and the heat conducting piece (3) is not more than 6.2mm.
7. A terminal temperature measurement structure according to claim 1, wherein: the temperature sensor (5) is a patch type temperature sensor or an NTC temperature sensor or a PTC temperature sensor.
8. A terminal temperature measurement structure according to claim 1, wherein: and heat conduction silica gel is arranged between the heat conduction piece (3) and the circuit board (2).
9. A connector, characterized in that: the temperature measuring structure comprises a terminal support (6) and the terminal temperature measuring structure as claimed in any one of claims 1-8, wherein the circuit board (2) is fixed on the terminal support (6), the terminal (1) is clamped on the terminal support (6), and the heat conducting elastic sheet (4) is abutted between the heat conducting piece (3) and the terminal (1).
10. A connector as defined in claim 9, wherein: the temperature measuring device also comprises a shell (7), wherein the terminal bracket (6) and the terminal temperature measuring structure are arranged in the shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223537993.5U CN219161479U (en) | 2022-12-29 | 2022-12-29 | Terminal temperature measurement structure and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223537993.5U CN219161479U (en) | 2022-12-29 | 2022-12-29 | Terminal temperature measurement structure and connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219161479U true CN219161479U (en) | 2023-06-09 |
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ID=86639894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223537993.5U Active CN219161479U (en) | 2022-12-29 | 2022-12-29 | Terminal temperature measurement structure and connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219161479U (en) |
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2022
- 2022-12-29 CN CN202223537993.5U patent/CN219161479U/en active Active
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