CN216560729U - Primary side large current testing tool of Hall current sensor - Google Patents
Primary side large current testing tool of Hall current sensor Download PDFInfo
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- CN216560729U CN216560729U CN202122640334.3U CN202122640334U CN216560729U CN 216560729 U CN216560729 U CN 216560729U CN 202122640334 U CN202122640334 U CN 202122640334U CN 216560729 U CN216560729 U CN 216560729U
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Abstract
The invention provides a primary side heavy current testing tool of a Hall current sensor, which comprises a base and an upper cover, wherein the upper surface of the base is provided with a placing position for the Hall current sensor; the upper cover is arranged above the base during testing, an upper profiling current bar and an upper testing needle penetrating through the upper cover are arranged on the upper cover, the upper profiling current bar and the upper testing needle are both conductors, the bottom of the upper profiling current bar corresponds to a primary side pin of the Hall current sensor and is used for inputting large current to the primary side pin, and the bottom of the upper testing needle is abutted to the upper surface of a signal pin of the Hall current sensor. The primary side high-current testing tool of the Hall current sensor can ensure that a product works at high current for a long time, so that the testing precision of the product is improved, the testing efficiency is effectively improved, the damage of pins is reduced, and the primary side high-current testing tool can be continuously used after testing.
Description
Technical Field
The invention belongs to the technical field of Hall current sensor testing, and particularly relates to a primary side large current testing tool of a Hall current sensor.
Background
At present, all integrally packaged Hall current sensors cannot give rated current for a long time during testing due to small primary side pins, and can give rated current for a long time due to small resistance due to welding together when mounted on a PCB (printed circuit board).
Two methods for testing the primary side of the existing Hall chip are illustrated by taking the SO8 Hall chip as an example:
1. at product development verification stage
In the product development stage, in order to ensure the stability of the primary current of the chip, the test is usually performed by soldering to a PCB. After the original side of the Hall chip is welded to the PCB, the effective connection of the Hall chip pin and the conductor can be completely ensured, the resistance is very small, the stability of the tested current can be completely ensured, and the test data is more reliable. However, in the scheme, the primary side needs to be welded, so that a certain damage can be caused when the welded product is detached, and the pins of the detached product are stained with tin, so that the product cannot be sold, and therefore, the scheme is not suitable for mass production of products.
2. In the production stage
In the production stage, the chip holder is generally used for testing. Each secondary side in the chip base is provided with a spring pin which can ensure effective contact with a chip pin, but the contact area is very small, and when large current is applied for a long time, the chip is heated seriously and is easy to burn out, so that special equipment is generally adopted for instantaneous pulse current. When the scheme is adopted, the equipment for applying the instantaneous pulse current is expensive, and simultaneously needs to be matched with corresponding acquisition equipment for use, so that the whole system has more equipment, a complex circuit structure and large introduced measurement interference. Therefore, the scheme still does not belong to the optimal scheme, and is not suitable for long-term aging test of products.
Summary of the invention
In view of this, in order to overcome the above drawbacks, the present invention provides a primary side high current testing tool for a hall current sensor.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a primary side heavy current testing tool of a Hall current sensor comprises a base and an upper cover, wherein a placing position for the Hall current sensor is arranged on the upper surface of the base;
the upper cover is arranged above the base during testing, an upper profiling current bar and an upper testing needle penetrating through the upper cover are arranged on the upper cover, the upper profiling current bar and the upper testing needle are both conductors, the bottom of the upper profiling current bar corresponds to a primary side pin of the Hall current sensor and is used for inputting large current to the primary side pin, and the bottom of the upper testing needle is abutted to the upper surface of a signal pin of the Hall current sensor.
Furthermore, the upper cover is hinged with one end of the base;
still be equipped with locking Assembly between upper cover and the base, realize fixing after upper cover and the base are folded through locking Assembly.
Furthermore, the locking assembly comprises locking plates arranged on two sides of the upper cover, vertical strip-shaped grooves corresponding to the locking plates are formed in two sides of the upper cover, the locking plates are arranged in the strip-shaped grooves, the top of the upper cover extends upwards to form a plurality of convex blocks, each locking plate is correspondingly provided with two convex blocks, a connecting shaft is arranged between the two convex blocks on the same side, a connecting part corresponding to the connecting shaft is arranged on each locking plate, and a shaft hole corresponding to the connecting shaft is formed in each connecting part;
the locking plate is hinged with the upper cover through a connecting shaft, and a torsion spring corresponding to the locking plate is further arranged on the connecting shaft;
the base is also provided with a strip-shaped groove corresponding to the locking plate, the base is provided with a clamping groove corresponding to the locking plate, and the locking plate is provided with a clamping block corresponding to the clamping groove.
Further, the upper testing needle is fixedly connected with the upper cover;
the number of the upper profiling current rows is more than two; the upper profiling current bar comprises a connecting column and a profiling block which are sequentially connected from top to bottom, the connecting column is a cylinder, the profiling block is a square column, the shape of the bottom of the square column corresponds to the shape of the outer end of a primary side stitch of the Hall current sensor and is used for compressing the outer end of the primary side stitch, a groove corresponding to the profiling block is formed in the bottom of the upper cover, a through hole communicated with the groove is formed in the upper end of the upper cover, the diameter of the through hole corresponds to the diameter of the cylinder, a compression spring is further sleeved on the outer side of the connecting column and is arranged below the through hole, and downward pressure is applied to the profiling block above the profiling block.
Furthermore, a lower profiling current bar is also arranged on the base, and the shape of the lower profiling current bar corresponds to the shape of the inner side end of the primary side pin of the Hall current sensor;
the base is also provided with a lower testing needle, and the upper end of the lower testing needle is abutted against the lower surface of a signal pin of the Hall current sensor;
the lower profiling current bar and the lower testing needle are both provided with conductors.
Furthermore, the bottom of the lower profiling current bar and the bottom of the lower testing pin both extend downwards to the lower surface of the base.
Furthermore, the upper cover comprises a square frame and a lifting assembly arranged on the inner side of the square frame, and the direction frame is hinged with the base; the upper profiling current bar, the upper testing needle and the locking assembly are all arranged on the lifting assembly;
the lifting assembly comprises an upper plate arranged above the profiling frame and a lower plate arranged below the square frame, the upper plate and the lower plate are fixedly connected through bolts, a cavity is formed between the upper plate and the lower plate, a plurality of grooves are formed in the upper surface of the square frame, connecting plates are correspondingly arranged in the grooves, the connecting plates are fixedly connected with the upper plate, and the lower part of each connecting plate is fixedly connected with the top of a top tightening spring.
Compared with the prior art, the primary side large current testing tool of the Hall current sensor has the following advantages:
(1) the primary side high-current testing tool of the Hall current sensor can ensure that a product works at high current for a long time, so that the testing precision of the product is improved, the testing efficiency is effectively improved, the damage of pins is reduced, and the primary side high-current testing tool can be continuously used after testing; the tool can also be used for the aging test procedure of products, and the product quality can be improved and the stability of the product quality can be increased and decreased through aging.
(2) According to the primary side large-current testing tool for the Hall current sensor, a stable and effective supporting environment is provided for the Hall current sensor through the base, and the Hall current sensor can be accurately positioned;
the upper cover is hinged to the base, the Hall current sensor can be taken out or clamped through overturning movement, the upper portion copying current bar can be in full contact with a testing primary side through the design of a compression spring of the upper portion copying current bar, and contact resistance is effectively reduced.
(3) According to the primary side large-current testing tool for the Hall current sensor, the lifting assembly can be used for realizing further downward pressing after being folded, so that the upper profiling circuit bar and the upper testing pin are in full contact with the Hall current sensor, and the accuracy of a testing result is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is an overall structure diagram of a primary side large current testing tool of a Hall current sensor in the background art;
fig. 2 is a structural diagram of the inside of an upper cover of a primary side high-current test fixture of a hall current sensor according to an embodiment of the present invention;
FIG. 3 is a bottom structure view of the upper cover according to the embodiment of the present invention;
FIG. 4 is a top view of the base according to the embodiment of the present invention;
FIG. 5 is a bottom structure view of the base according to the embodiment of the present invention;
fig. 6 is a structural view of an upper profiling current bar according to the inventive embodiment of the present invention.
Description of reference numerals:
1. an upper cover; 11. a square frame; 111. the spring is tightly propped; 12. an upper plate; 13. a connecting plate; 14. an upper profiling current bar; 141. connecting columns; 142. a contour block; 13. a compression spring; 15. an upper test pin; 16. a lower plate; 2. a base; 21. a lower profiling current bar; 22. a lower test pin; 3. a locking plate; 31. a connecting portion; 32. a torsion spring; 4. a hall current sensor.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
As shown in fig. 1, a primary side large current testing tool for a hall current sensor comprises a base 2 and an upper cover 1, wherein a placing position for the hall current sensor 4 is arranged on the upper surface of the base 2;
the upper cover 1 is arranged above the base 2 during testing, an upper profiling current bar 14 and an upper testing pin 15 penetrating through the upper cover 1 are arranged on the upper cover 1, the upper profiling current bar 14 and the upper testing pin 15 are both conductors, the bottom of the upper profiling current bar 14 corresponds to a primary side pin of the Hall current sensor 4 and is used for inputting large current to the primary side pin, and the bottom of the upper testing pin 15 is abutted to the upper surface of a signal pin of the Hall current sensor 4.
The upper cover 1 is hinged with one end of the base 2; still be equipped with locking Assembly between upper cover 1 and the base 2, realize fixing after upper cover 1 and the base 2 are folded through locking Assembly. The operation is convenient, and the Hall current sensor 4 is conveniently pressed.
The locking assembly comprises locking plates 3 arranged on two sides of an upper cover 1, vertical strip-shaped grooves corresponding to the locking plates 3 are formed in the two sides of the upper cover 1, the locking plates 3 are arranged in the strip-shaped grooves, the top of the upper cover 1 extends upwards to form a plurality of convex blocks, each locking plate 3 is provided with two convex blocks correspondingly, a connecting shaft is arranged between the two convex blocks on the same side, a connecting part 31 corresponding to the connecting shaft is arranged on each locking plate 3, and a shaft hole corresponding to the connecting shaft is formed in each connecting part 31;
the locking plate 3 is hinged with the upper cover 1 through a connecting shaft, and a torsion spring 32 corresponding to the locking plate 3 is further arranged on the connecting shaft;
the upper end of the locking plate 3 extends upwards to form a clamping part, and two fingers apply inward force to the clamping part, so that the locking plate 3 can be opened, and the operation is convenient.
The base 2 is also provided with a strip-shaped groove corresponding to the locking plate 3, the base 2 is provided with a clamping groove corresponding to the locking plate 3, and the locking plate 3 is provided with a clamping block corresponding to the clamping groove.
As shown in fig. 1, 2, 3 and 6, the upper test pin 15 is fixedly connected with the upper cover 1; the number of the upper profiling current bars 14 is more than two; the upper profiling current bar 14 comprises a connecting column 141 and a profiling block 142 which are sequentially connected from top to bottom, the connecting column 141 is a cylinder, the profiling block 142 is a square column, the shape of the bottom of the square column corresponds to the shape of the outer end of a primary side pin of the Hall current sensor 4 and is used for pressing the outer end of the primary side pin, a groove corresponding to the profiling block 142 is formed in the bottom of the upper cover 1, a through hole communicated with the groove is formed in the upper end of the upper cover 1, the diameter of the through hole corresponds to the diameter of the cylinder, a compression spring 13 is further sleeved on the outer side of the connecting column 141 and is arranged below the through hole, and the upper part of the profiling block 142 is used for applying downward pressure to the profiling block 142.
As shown in fig. 4 and 5, a lower profiling current bar 21 is also arranged on the base 2, and the shape of the lower profiling current bar 21 corresponds to the shape of the inner side end of the primary side pin of the hall current sensor 4;
the base 2 is also provided with a lower testing needle 22, and the upper end of the lower testing needle 22 is abutted against the lower surface of a signal pin of the Hall current sensor 4;
the lower profiling current bar 21 and the lower test pin 22 both have conductors. The structural design of the upper profiling current bar 14 and the lower profiling current bar 21 is mainly to realize the full contact between the current bars and the primary side pins, and increase the contact surface to improve the accuracy of the test result.
The lower profiling current bar 21 and the lower test pin 22 both extend downwards to the lower surface of the base 2, mainly for realizing redundant design, when the upper profiling current bar 14 and the upper test pin 15 have faults, the lower profiling current bar 21 and the lower test pin 22 can be used for testing, and generally, the upper profiling current bar 14 and the upper test pin 15 are mainly used for completing testing.
As shown in fig. 1 to 3, the upper cover 1 includes a square frame 11 and a lifting assembly disposed inside the square frame 11, and the direction frame is hinged to the base 2; the upper profiling current bar 14, the upper test needle 15 and the locking assembly are all arranged on the lifting assembly;
the lifting component comprises an upper plate 12 arranged above the profiling framework and a lower plate 16 arranged below the square framework 11, the upper plate 12 and the lower plate 16 are fixedly connected through bolts, a square through hole is formed in the center of the square framework 11, the lifting component consisting of the upper plate 12, the lower plate 16 and the bolts is arranged in the square hole, up-and-down lifting can be realized, after the upper cover is folded, the lifting component can be pressed downwards again, so that the upper profiling current bar and the upper testing pins are fully contacted with the Hall current sensor, because the upper plate is fixedly connected with the connecting plate, a jacking spring is arranged below the connecting plate, the jacking spring can also provide upward elasticity for the upper plate, a cavity is arranged between the upper plate 12 and the lower plate 16 and used for installing the upper profiling current plate, the upper testing pins and the compression spring 13, a round hole corresponding to the connecting column 141 is formed in the upper plate 12, the square hole that has and the profile modeling piece 142 to correspond is opened on the 16 boards in below, and the square hole can realize being greater than the spacing of profile modeling piece, prevents the rotation, and compression spring sets up in the cavity for the profile modeling piece provides decurrent pressure, and the lug also sets up on upper panel 12, square frame 11's upper surface is opened has a plurality of recesses, and the inside spring groove that is used for placing top tension spring 111 that is equipped with of recess, still correspond in the recess and be equipped with connecting plate 13, connecting plate 13 and upper panel 12 fixed connection, the below of connecting plate 13 and the top fixed connection of top tension spring 111.
The main effect of the lifting assembly is that after the upper cover 1 and the base 2 are folded, the upper copying current bar 14 and the upper testing pin 15 cannot be in full contact with the primary side pin and the signal pin, the upper copying current bar and the upper testing pin are further pressed downwards through the lifting assembly, full contact can be achieved, the upper copying current bar and the signal pin are locked through the locking assembly, after testing is completed, the locking plate 3 is slightly clamped to the inner side, the upper plate 12 can be automatically popped upwards under the action of the jacking spring 111, and separation from the primary side pin and the signal pin is achieved.
The testing process comprises the following steps:
the method comprises the steps of firstly opening an upper cover 1, placing a Hall current sensor 4 to be tested at a placing position, at the moment, fully contacting a lower portion of a primary pin of the Hall current sensor 4 with a lower portion profiling current bar 21, enabling a signal pin to be in contact with a lower portion testing pin 22 in an attached mode, folding the upper cover 1, pressing an upper plate 12 downwards after folding, locking a locking plate 3 with a base 2, enabling an upper portion profiling current bar 14 to be pressed downwards under the action of a compression spring 13 and to be in full contact with the primary pin, enabling the upper surface of the signal pin to be in contact with the bottom of an upper portion testing pin 15 of the upper cover 1, starting subsequent testing, and during testing, enabling a large current (about 30 mA) to be connected into the upper portion profiling current bar 14, receiving a signal fed back by the Hall current sensor 4 from one end of the testing pin, and achieving large current testing of the Hall current sensor 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a hall current sensor's former limit heavy current test fixture which characterized in that: the device comprises a base and an upper cover, wherein the upper surface of the base is provided with a placing position for a Hall current sensor;
the upper cover is arranged above the base during testing, an upper profiling current bar and an upper testing needle penetrating through the upper cover are arranged on the upper cover, the upper profiling current bar and the upper testing needle are both conductors, the bottom of the upper profiling current bar corresponds to a primary side pin of the Hall current sensor and is used for inputting large current to the primary side pin, and the bottom of the upper testing needle is abutted to the upper surface of a signal pin of the Hall current sensor.
2. The primary side large current testing tool of the Hall current sensor according to claim 1, characterized in that: the upper cover is hinged with one end of the base;
still be equipped with locking Assembly between upper cover and the base, realize fixing after upper cover and the base are folded through locking Assembly.
3. The primary side large current testing tool of the Hall current sensor according to claim 2, characterized in that: the locking assembly comprises locking plates arranged on two sides of an upper cover, vertical strip-shaped grooves corresponding to the locking plates are formed in two sides of the upper cover, the locking plates are arranged in the strip-shaped grooves, the top of the upper cover extends upwards to form a plurality of convex blocks, each locking plate is correspondingly provided with two convex blocks, a connecting shaft is arranged between the two convex blocks on the same side, a connecting part corresponding to the connecting shaft is arranged on each locking plate, and a shaft hole corresponding to the connecting shaft is formed in each connecting part;
the locking plate is hinged with the upper cover through a connecting shaft, and a torsion spring corresponding to the locking plate is further arranged on the connecting shaft;
the base is also provided with a strip-shaped groove corresponding to the locking plate, the base is provided with a clamping groove corresponding to the locking plate, and the locking plate is provided with a clamping block corresponding to the clamping groove.
4. The primary side large current testing tool of the Hall current sensor according to claim 1, characterized in that: the upper testing needle is fixedly connected with the upper cover;
the number of the upper profiling current rows is more than two; the upper profiling current bar comprises a connecting column and a profiling block which are sequentially connected from top to bottom, the connecting column is a cylinder, the profiling block is a square column, the shape of the bottom of the square column corresponds to the shape of the outer end of a primary side stitch of the Hall current sensor and is used for compressing the outer end of the primary side stitch, a groove corresponding to the profiling block is formed in the bottom of the upper cover, a through hole communicated with the groove is formed in the upper end of the upper cover, the diameter of the through hole corresponds to the diameter of the cylinder, a compression spring is further sleeved on the outer side of the connecting column and is arranged below the through hole, and downward pressure is applied to the profiling block above the profiling block.
5. The primary side large current testing tool of the Hall current sensor according to claim 1, characterized in that: the base is also provided with a lower profiling current bar, and the shape of the lower profiling current bar corresponds to the shape of the inner side end of a primary side pin of the Hall current sensor;
the base is also provided with a lower testing needle, and the upper end of the lower testing needle is abutted against the lower surface of a signal pin of the Hall current sensor;
the lower profiling current bar and the lower testing needle are both provided with conductors.
6. The primary side large current testing tool of the Hall current sensor according to claim 5, wherein: the bottom of the lower profiling current bar and the bottom of the lower testing pin both extend downwards to the lower surface of the base.
7. The primary side large current testing tool of the Hall current sensor according to claim 3, characterized in that: the upper cover comprises a square frame and a lifting assembly arranged on the inner side of the square frame, and the direction frame is hinged with the base; the upper profiling current bar, the upper testing needle and the locking assembly are all arranged on the lifting assembly;
the lifting assembly comprises an upper plate arranged above the profiling frame and a lower plate arranged below the square frame, the upper plate and the lower plate are fixedly connected through bolts, a cavity is formed between the upper plate and the lower plate, the upper surface of the square frame is provided with a plurality of grooves, spring grooves used for placing the jacking springs are formed in the grooves, connecting plates are correspondingly arranged in the grooves and fixedly connected with the upper plate, and the lower sides of the connecting plates and the tops of the jacking springs are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640334.3U CN216560729U (en) | 2021-10-30 | 2021-10-30 | Primary side large current testing tool of Hall current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640334.3U CN216560729U (en) | 2021-10-30 | 2021-10-30 | Primary side large current testing tool of Hall current sensor |
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| Publication Number | Publication Date |
|---|---|
| CN216560729U true CN216560729U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122640334.3U Active CN216560729U (en) | 2021-10-30 | 2021-10-30 | Primary side large current testing tool of Hall current sensor |
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| CN (1) | CN216560729U (en) |
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2021
- 2021-10-30 CN CN202122640334.3U patent/CN216560729U/en active Active
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Denomination of utility model: A primary high current test tooling for Hall current sensor Effective date of registration: 20220627 Granted publication date: 20220517 Pledgee: Tianjin Zhongguancun Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Tianjin Xinsen Electronic Technology Co.,Ltd. Registration number: Y2022120000030 |
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Date of cancellation: 20230906 Granted publication date: 20220517 Pledgee: Tianjin Zhongguancun Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Tianjin Xinsen Electronic Technology Co.,Ltd. Registration number: Y2022120000030 |
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Effective date of registration: 20231218 Address after: Room 401-026, 4th Floor, Zhengling High tech Park (Core Space), No. 2 Cuizhu Second Street, Xiangzhou District, Zhuhai City, Guangdong Province, 519070 Patentee after: Zhuhai Xinsen Electronic Technology Co.,Ltd. Address before: 300000 Floor 9, building 1, Zhongguancun Science and Technology City collaborative development center, intersection of Xihuan North Road and Tangtong highway, Baodi District, Tianjin Patentee before: Tianjin Xinsen Electronic Technology Co.,Ltd. |
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