CN220983347U - Positive temperature coefficient thermistor performance test fixture - Google Patents
Positive temperature coefficient thermistor performance test fixture Download PDFInfo
- Publication number
- CN220983347U CN220983347U CN202322672825.5U CN202322672825U CN220983347U CN 220983347 U CN220983347 U CN 220983347U CN 202322672825 U CN202322672825 U CN 202322672825U CN 220983347 U CN220983347 U CN 220983347U
- Authority
- CN
- China
- Prior art keywords
- metal electrode
- electrode plate
- temperature coefficient
- positive temperature
- upper metal
- 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.)
- Active
Links
- 238000011056 performance test Methods 0.000 title claims description 9
- 239000002184 metal Substances 0.000 claims abstract description 172
- 229910052751 metal Inorganic materials 0.000 claims abstract description 172
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 239000000523 sample Substances 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims 4
- 210000001503 joint Anatomy 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241001424392 Lucia limbaria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Abstract
The utility model provides a positive temperature coefficient thermistor performance testing tool which comprises a base, wherein the base is vertically arranged, a first mounting plate and a second mounting plate are arranged on the base, the second mounting plate is positioned below the first mounting plate, an upper metal post which is electrically connected with a testing power supply is arranged on the first mounting plate, an upper metal electrode plate is arranged at one end of the upper metal post, which is far away from the first mounting plate, the upper metal electrode plate is electrically connected with the upper metal post, a lower metal post which is electrically connected with the testing power supply is arranged on the second mounting plate, a lower metal electrode plate is arranged at one end of the lower metal post, which is far away from the second mounting plate, the lower metal electrode plate is electrically connected with the lower metal post, the lower metal electrode plate is positioned right below the upper metal electrode plate, a positive temperature coefficient thermistor is clamped between the upper metal electrode plate and the lower metal electrode plate, the upper metal post adopts a spring probe, one end of a spring on the upper metal post is in butt joint with the upper metal electrode plate, and the other end of the spring on the upper metal post is in butt joint with the first mounting plate.
Description
Technical Field
The utility model relates to the field of performance test of positive temperature coefficient thermistors, in particular to a tool for testing performance of positive temperature coefficient thermistors.
Background
With the wider and wider application range of the positive temperature coefficient thermistor, the requirements of partial products on the size and the power of the positive temperature coefficient thermistor are larger and larger, for example, the positive temperature coefficient thermistor for an electric vehicle water heater, because the heater for the electric vehicle requires high energy density, the size of the thermistor is larger and larger, and the single-chip power is larger and larger, so that the performance of the product after loading is ensured, and the performances such as voltage resistance, impact current and the like of the thermistor can be tested during production and warehousing.
The conventional detection method generally places a thermistor on a test fixture taking a small copper column as a power-on path, the contact area between the copper column and a thermistor electrode is copper column area at the power-on moment, and the current resistance of the electrode is limited due to overlarge instantaneous current and small contact area, so that the defect of a burned electrode is easy to occur, the misjudgment of the product performance can be possibly caused, and the test fixture cannot detect a plurality of products at the same time due to overlarge copper column distance.
Therefore, it is necessary to design a new ptc thermistor performance test fixture to overcome the above-mentioned problems.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a positive temperature coefficient thermistor performance testing tool, which at least solves part of the problems in the prior art.
The utility model is realized in the following way:
The utility model provides a positive temperature coefficient thermistor performance testing tool which comprises a base, wherein the base is vertically arranged, a first mounting plate and a second mounting plate are arranged on the base, the second mounting plate is positioned under the first mounting plate, an upper metal electrode plate electrically connected with a testing power supply is arranged on the first mounting plate, an upper metal electrode plate is arranged at one end of the upper metal electrode plate, which is far away from the first mounting plate, the upper metal electrode plate is electrically connected with the upper metal electrode plate, a lower metal electrode plate electrically connected with the testing power supply is arranged on the second mounting plate, a lower metal electrode plate is arranged at one end of the lower metal electrode plate, which is far away from the second mounting plate, the lower metal electrode plate is electrically connected with the lower metal electrode plate, the lower metal electrode plate is positioned under the upper metal electrode plate, a positive temperature coefficient thermistor is clamped between the upper metal electrode plate and the lower metal electrode plate, a spring probe is adopted by the upper metal electrode plate, one end of a spring on the upper metal electrode plate is in abutting connection with the upper metal electrode plate, and the other end of the spring on the upper metal electrode plate is in abutting connection with a side wall of the second mounting plate.
Further, a plurality of upper metal columns are arranged on the first mounting plate, the upper metal columns are arranged at intervals along the length direction of the base, a plurality of lower metal columns are arranged on the second mounting plate, the lower metal columns are arranged at intervals along the length direction of the base, the upper metal columns correspond to the lower metal columns one by one, and the upper metal electrode plates adjacent to the upper metal electrode plates are arranged in a staggered mode in the vertical direction.
Further, the first mounting plate and the second mounting plate are both arranged horizontally.
Further, the upper metal electrode plate and the lower metal electrode plate are rectangular plates.
Further, the cross section of the upper metal electrode plate in the horizontal direction and the cross section of the lower metal electrode plate in the horizontal direction are equal to the cross section of the positive temperature coefficient thermistor in the horizontal direction.
Further, the cross section of the upper metal electrode plate in the horizontal direction and the cross section of the lower metal electrode plate in the horizontal direction are larger than the cross section of the positive temperature coefficient thermistor in the horizontal direction.
Further, the bottom of the base is provided with a horizontal supporting plate.
The utility model has the following beneficial effects:
1. The utility model provides a positive temperature coefficient thermistor performance test fixture, wherein an upper metal electrode plate is arranged on an upper metal column, a lower metal electrode plate is arranged on a lower metal column, and the upper metal electrode plate and the lower metal electrode plate are electrically connected with electrode plates on two sides of a positive temperature coefficient thermistor, so that the contact area between the upper metal electrode plate and the electrode plates of the positive temperature coefficient thermistor is increased, the burning electrode defect caused by instant current at the moment of electrification is reduced, and the erroneous judgment of the product performance is avoided as far as possible.
2. The utility model provides a positive temperature coefficient thermistor performance testing tool, wherein any upper metal electrode plate and an upper metal electrode plate adjacent to the upper metal electrode plate are arranged in a staggered manner in the vertical direction, and the lower metal electrode plate and the upper metal electrode plate are in a positive relation, so that the positive temperature coefficient thermistor is arranged in a staggered manner in the vertical direction, and a plurality of positive temperature coefficient thermistors can be detected simultaneously under the condition of smaller horizontal spacing of metal columns.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a testing fixture for testing performance of a positive temperature coefficient thermistor according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a positive temperature coefficient thermistor according to an embodiment of the present utility model arranged in a staggered manner in a vertical direction;
fig. 3 is a top view of an upper metal pillar and an upper metal electrode plate according to an embodiment of the present utility model.
In the figure: the device comprises a base 1, a lower metal column 2, an upper metal electrode plate 3, an upper metal column 4, a positive temperature coefficient thermistor 5, a lower metal electrode plate 6, a first mounting plate 7, a second mounting plate 8, a wire 9 and a horizontal support plate 10.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the embodiment of the utility model provides a testing fixture for performance of a positive temperature coefficient thermistor, comprising a base 1, wherein the base 1 is vertically arranged, a first mounting plate 7 and a second mounting plate 8 are arranged on the base 1, the first mounting plate 7 and the second mounting plate 8 are horizontally arranged, the second mounting plate 8 is positioned below the first mounting plate 7, a horizontal support plate 10 is arranged at the bottom of the base 1, the base 1 is placed or installed on a workbench through the horizontal support plate 10, an upper metal column 4 electrically connected with a testing power supply is installed on the first mounting plate 7, an upper metal electrode plate 3 is installed at one end of the upper metal column 4, which is far away from the first mounting plate 7, the upper metal electrode plate 3 is electrically connected with the upper metal column 4, a lower metal column 2 electrically connected with the testing power supply is installed on the second mounting plate 8, the lower metal pole 2 is provided with a lower metal pole plate 6 at one end facing away from the second mounting plate 8, the lower metal pole plate 6 is electrically connected with the lower metal pole 2, the upper metal pole 4 and the lower metal pole 2 are respectively electrically connected with a positive and negative electrode lead 9 of a test power supply, the lower metal pole plate 6 is positioned right below the upper metal pole plate 3, a positive temperature coefficient thermistor 5 is clamped between the upper metal pole plate 3 and the lower metal pole plate 6, in the utility model, the positive temperature coefficient thermistor 5 is a chip thermistor, two opposite sides of the positive temperature coefficient thermistor 5 are respectively provided with an electrode plate, the upper metal pole plate 3 is used for being electrically connected with an electrode plate at one side of the positive temperature coefficient thermistor 5, the lower metal pole plate 6 is used for being electrically connected with an electrode plate at the other side of the positive temperature coefficient thermistor 5, the upper metal pole 4 adopts a spring probe, one end of the spring on the upper metal column 4 is abutted with the upper metal electrode plate 3, and the other end of the spring on the upper metal column 4 is abutted with the side wall of the first mounting plate 7, which is close to the second mounting plate 8. When the positive temperature coefficient thermistor 5 is required to be placed between the upper metal electrode plate 3 and the lower metal electrode plate 6, the upper metal column 4 is lifted upwards, after the positive temperature coefficient thermistor 5 is placed on the lower metal electrode plate 6, the upper metal column 4 is loosened, and the springs on the upper metal column 4 drive the upper metal electrode plate 3 to clamp the positive temperature coefficient thermistor 5 placed on the lower metal electrode plate 6. The utility model provides a positive temperature coefficient thermistor performance test fixture, wherein an upper metal electrode plate 3 is arranged on an upper metal column 4, a lower metal electrode plate 6 is arranged on a lower metal column 2, and the upper metal electrode plate 3 and the lower metal electrode plate 6 are electrically connected with electrode plates on two sides of a positive temperature coefficient thermistor 5, so that the contact area between the upper metal electrode plate 3 and the electrode plates of the positive temperature coefficient thermistor 5 is increased, the power-on moment is reduced, the bad burning electrode caused by overlarge instant current is avoided, and the erroneous judgment of the product performance is avoided as far as possible.
In this embodiment, the first mounting plate 7 is provided with a plurality of upper metal columns 4, each upper metal column 4 is arranged at intervals along the length direction of the base 1, the second mounting plate 8 is provided with a plurality of lower metal columns 2, each lower metal column 2 is arranged at intervals along the length direction of the base 1, the upper metal columns 4 are in one-to-one correspondence with the lower metal columns 2 and are opposite to each other, and the upper metal electrode plates 3 and the adjacent upper metal electrode plates 3 are arranged in a staggered manner in the vertical direction. The utility model provides a positive temperature coefficient thermistor performance test fixture, wherein any upper metal electrode plate 3 and an upper metal electrode plate 3 adjacent to the upper metal electrode plate are arranged in a staggered manner in the vertical direction, and a lower metal electrode plate 6 and the upper metal electrode plate 3 are in a positive relation, namely positive temperature coefficient thermistors 5 are arranged in a staggered manner in the vertical direction, a plurality of positive temperature coefficient thermistors 5 can be simultaneously detected under the condition that the horizontal spacing of metal columns is smaller, each positive temperature coefficient thermistor 5 adopts the same test power supply, and each test branch can be respectively provided with a switch according to actual requirements.
In this embodiment, the upper metal electrode plate 3 and the lower metal electrode plate 6 are rectangular plates. The sizes of the upper metal electrode plate 3 and the lower metal electrode plate 6 are the same as the size of the measured positive temperature coefficient thermistor 5 or larger than the size of the positive temperature coefficient thermistor 5.
The utility model has simple operation, low cost and small volume, can simultaneously measure the surface temperature, impact current, voltage resistance and other performances of large-size, multi-chip or single-chip thermistors, avoids the condition that the clamp cannot clamp the positive temperature coefficient thermistors due to oversized, or short circuit failure caused by contact of adjacent positive temperature coefficient thermistors, can simulate the working state of the positive temperature coefficient thermistors 5, and reproduces the bad phenomena (arcing phenomenon, namely instant conduction among electrode plates) of the side arcing of the positive temperature coefficient thermistors 5.
After the ptc thermistor 5 is placed on the ptc thermistor performance test tool provided by the present utility model, the ptc thermistor 5 can be tested as follows:
1. Testing the current and surface temperature of a single positive temperature coefficient thermistor 5
The fixture is connected into a test circuit, the upper metal column 4 is lifted, the electrode plate on one side of the positive temperature coefficient thermistor 5 is downwards placed on the lower metal electrode plate 6 of the test fixture, the element electrode is contacted with the lower metal electrode plate 6, the upper metal column 4 is put down, the upper metal column 4 is pressed against the electrode plate on the other side of the positive temperature coefficient thermistor 5, a switch of the test circuit is opened, current data of the test circuit are read, namely, the current of the positive temperature coefficient thermistor 5 is obtained, the surface temperature of the upper metal electrode plate 3 is tested by using surface temperature test equipment, and the test is completed. The measured temperature of the upper metal electrode plate 3 is regarded as the temperature of the positive temperature coefficient thermistor 5.
2. Testing the Voltage withstand Performance of the positive temperature coefficient thermistor 5
The fixture is connected into a test circuit, electrode plates on one side of each positive temperature coefficient thermistor 5 are downwards placed on each lower metal electrode plate 6 of the test fixture respectively, the electrode plates on one side of each positive temperature coefficient thermistor 5 are in contact with the lower metal electrode plates 6, an upper metal column 4 is put down, the upper metal electrode plates 3 are pressed against the electrode plates on the other side of the positive temperature coefficient thermistor 5, a test circuit switch is opened, testing is started, voltage is adjusted according to requirements, the condition of the positive temperature coefficient thermistor 5 is observed after the requirements are met, a withstand voltage result is judged, and the test is completed.
3. Testing the temperature resistance characteristics of the positive temperature coefficient thermistor 5
The fixture is connected into a testing system, electrode plates on one side of each positive temperature coefficient thermistor 5 are downwards placed on each lower metal electrode plate 6 of the testing fixture respectively, the electrode plates on one side of each positive temperature coefficient thermistor 5 are in contact with the lower metal electrode plates 6, the upper metal column 4 is put down, the upper metal electrode plates 3 are pressed against the electrode plates on the other side of the positive temperature coefficient thermistor 5, a testing circuit switch is opened, and the temperature resistance characteristic starts to be tested.
What is not described in detail in this specification is prior art known to those skilled in the art.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. A positive temperature coefficient thermistor performance test fixture is characterized in that: including the base, the base is vertical to be arranged, be equipped with first mounting panel and second mounting panel on the base, the second mounting panel is located the below of first mounting panel, install the last metal column that is connected with the test power electricity on the first mounting panel, go up the metal column and deviate from the one end of first mounting panel is installed and is gone up the metal electrode plate, go up the metal electrode plate with it is connected to go up the metal column electricity, install the lower metal column that is connected with the test power electricity on the second mounting panel, the lower metal column deviates from the one end of second mounting panel is installed down the metal electrode plate, down the metal electrode plate with it is connected to go down the metal column electricity, down the metal electrode plate is located go up under the metal electrode plate, positive temperature coefficient thermistor press from both sides in go up the metal electrode plate with down between the metal electrode plate, go up the metal column and adopt the spring probe, go up the spring one end on the metal column with go up the metal electrode plate butt, go up the spring other end on the metal column with the lateral wall butt that the first mounting panel is close to the second mounting panel.
2. The positive temperature coefficient thermistor performance testing tool of claim 1, wherein: the first mounting plate is provided with a plurality of upper metal columns, each upper metal column is arranged at intervals along the length direction of the base, the second mounting plate is provided with a plurality of lower metal columns, each lower metal column is arranged at intervals along the length direction of the base, the upper metal columns are in one-to-one correspondence with the lower metal columns, and the upper metal electrode plates are arranged in staggered mode in the vertical direction with the upper metal electrode plates adjacent to the upper metal electrode plates.
3. The positive temperature coefficient thermistor performance testing tool of claim 1, wherein: the first mounting plate and the second mounting plate are both horizontally arranged.
4. The positive temperature coefficient thermistor performance testing tool of claim 1, wherein: the upper metal electrode plate and the lower metal electrode plate are rectangular plates.
5. The positive temperature coefficient thermistor performance testing tool according to claim 4, wherein: the sectional area of the upper metal electrode plate in the horizontal direction and the sectional area of the lower metal electrode plate in the horizontal direction are equal to the sectional area of the positive temperature coefficient thermistor in the horizontal direction.
6. The positive temperature coefficient thermistor performance testing tool according to claim 4, wherein: the sectional area of the upper metal electrode plate in the horizontal direction and the sectional area of the lower metal electrode plate in the horizontal direction are larger than the sectional area of the positive temperature coefficient thermistor in the horizontal direction.
7. The positive temperature coefficient thermistor performance testing tool of claim 1, wherein: the bottom of the base is provided with a horizontal supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322672825.5U CN220983347U (en) | 2023-09-28 | 2023-09-28 | Positive temperature coefficient thermistor performance test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322672825.5U CN220983347U (en) | 2023-09-28 | 2023-09-28 | Positive temperature coefficient thermistor performance test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220983347U true CN220983347U (en) | 2024-05-17 |
Family
ID=91037336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322672825.5U Active CN220983347U (en) | 2023-09-28 | 2023-09-28 | Positive temperature coefficient thermistor performance test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220983347U (en) |
-
2023
- 2023-09-28 CN CN202322672825.5U patent/CN220983347U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218647017U (en) | Automatic testing jig for timing | |
| CN218240294U (en) | Device for batch insulating voltage-withstanding test of rectifier bridge | |
| CN220983347U (en) | Positive temperature coefficient thermistor performance test fixture | |
| CN216351045U (en) | Semiconductor device contact heating device capable of matching various package sizes | |
| CN218240101U (en) | Conductive film detection tool and detection system | |
| CN215728622U (en) | PCBA test fixture | |
| CN214310842U (en) | Photovoltaic terminal box comprehensive testing device for positioning data line | |
| CN201327520Y (en) | Test tool for connector | |
| CN101430354B (en) | Test method and apparatus for pin element | |
| CN207964888U (en) | A kind of test fixture of self-heating type gas sensor ceramic chip | |
| CN209280758U (en) | A kind of testing jig for battery measurement | |
| CN112782217A (en) | Thermal resistance test fixture for flip chip | |
| CN215005751U (en) | Circuit board voltage-withstand test frame and circuit board voltage-withstand test device | |
| CN217766716U (en) | Circuit detection equipment of power equipment | |
| CN210401602U (en) | Battery cell tester | |
| CN219799723U (en) | Safety testing equipment line conduction detection device | |
| CN215116714U (en) | Electric leakage detection device for detecting high current of PCB | |
| CN220171227U (en) | Sensor detection equipment | |
| CN217112632U (en) | Battery detection recording device | |
| CN220773241U (en) | Connector testing device | |
| CN212183349U (en) | Insulating end plate mounting equipment of motor rotor | |
| CN210465620U (en) | Breaker closing bounce detection device | |
| CN220854947U (en) | Screening clamp special for stacked bracket capacitor | |
| CN214310830U (en) | Special pipe row electric leakage tester for electric vehicle controller | |
| CN210514581U (en) | A support plate for detecting LED board in a poor light heat resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |