CN215768817U

CN215768817U - Aging table for three-terminal voltage stabilizer

Info

Publication number: CN215768817U
Application number: CN202122041513.5U
Authority: CN
Inventors: 冯晓岩
Original assignee: Hangzhou Jingrui Technology Co ltd
Current assignee: Hangzhou Jingrui Technology Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-08
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses an aging table for testing a three-terminal regulator, which comprises a cabinet body, wherein the cabinet body comprises a high-temperature test box and an aging power supply area, the high-temperature test box is positioned above the aging power supply area, the high-temperature test box comprises a box body and an aging mounting groove arranged in the box body, at least one aging plate is arranged on the aging mounting groove, the three-terminal regulator to be tested is inserted into the aging plate, the back surface of the box body corresponding to the aging mounting groove is provided with a corresponding driving mounting groove, the driving mounting groove is provided with at least one driving plate, the aging plate and the driving plate are in one-to-one correspondence, the aging plate is connected with the driving plate through a socket, the socket is arranged on the back surface of the box body, the aging power supply area is provided with at least one aging power supply, and the aging power supply is connected with the driving plate and the aging plate. The aging detection device is designed to be capable of specially detecting aging of the three-terminal voltage stabilizer, and is beneficial to reducing safety problems caused by aging defects.

Description

Aging table for three-terminal voltage stabilizer

Technical Field

The utility model relates to the technical field of voltage stabilizer tests, in particular to an aging table for a three-terminal voltage stabilizer.

Background

Today, as electronic technology develops rapidly, the requirement on the reliability of the whole machine is higher and higher, and screening of electronic components before formal use is very necessary. In normal operation of various electronic components including diodes, transistors, integrated circuits, etc., the reliability of the whole device is often affected due to component failure caused by manufacturing defects, etc., so it is very important to perform a reliability test on a certain batch of components in advance when the batch of components is used.

The failure phenomena of the electronic components can be classified into early failure, random failure and loss failure, the failure rate varies according to the working stage (power-on stress time), and fig. 1 shows the relationship between each working stage and the failure rate. In particular, large-scale component products are put into use without any aging measures, so that the failure rate is found to be high at the beginning of operation, but is gradually reduced quickly. This stage of failure rate degradation is referred to as the early life stage. The failure in this period is caused by manufacturing defects, the failure rate of the component is stabilized after the unqualified component fails before Te, the working period is called the service life period, and the failure rate occurring in this period is called random, accidental or burst failure. Since these failures are random and unpredictable, degradation begins to occur when the product is operated to time Tw, and failure rates increase again due to aging and wear of components close to their "rated life".

The three-terminal regulator is mounted on a circuit board in a component, wherein the three-terminal regulator is usually used in places needing voltage conversion, such as 18 volts to 12 volts and 12 volts to 5 volts (the common three-terminal regulator has 78 series 7805, 7808, 7809, 7812, 7824 and the like, the digital representation behind 78 represents the voltage value output by the regulator, the output of the 78 series regulator is positive voltage, such as 7805 represents the positive 5 volts output and 7812 represents the positive 12 volts output), the three-terminal regulator is also a common component device, however, no special instrument device can detect aging of the existing three-terminal regulator, so that the three-terminal regulator with manufacturing defects can be detected in advance in a short time, and the problem of potential safety hazards is easily caused.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an aging table for a three-terminal regulator, which is designed to be capable of specially detecting the aging of the three-terminal regulator and is beneficial to reducing the safety problem caused by the aging defect.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

an aging table for testing three-terminal voltage regulators comprises a cabinet body, wherein the cabinet body comprises a high-temperature test box and an aging power supply area, the high-temperature test box is used for testing the three-terminal voltage regulators, the aging power supply area is used for supplying power, the high-temperature test box is positioned above the aging power supply area and comprises a box body and an aging mounting groove arranged in the box body, at least one aging plate is arranged on the aging mounting groove, the three-terminal voltage regulators to be tested are inserted into the aging plate, correspondingly, the back surface of the box body corresponding to the aging mounting groove is provided with a corresponding driving mounting groove, at least one driving plate is arranged in the driving mounting groove, the aging plate and the driving plate are in one-to-one correspondence, the aging plate is connected with the driving plate through an insertion port, the insertion port is arranged on the back surface of the box body, and at least one aging power supply is arranged on the aging power supply area, the aging power supply is connected with the driving board and the aging board.

Preferably, the box body is provided with a main control single chip, an auxiliary power supply, a test box control and display unit and a complete machine control and display module, the auxiliary power supply respectively provides electric energy for the main control single chip, the test box control and display unit and the complete machine control and display module, and the main control single chip, the test box control and display unit and the complete machine control and display module are respectively connected with the drive board and the aging board.

Preferably, the box body is hinged with a box door, and a glass window is arranged on the box door.

Preferably, the aging power supply area is of a cabinet structure.

Preferably, the number of the aging power supplies is eight, correspondingly, the number of the aging boards is sixteen, the number of the driving boards is sixteen, each aging power supply is correspondingly connected with two aging boards, and the aging boards are correspondingly connected with the driving boards one by one.

Preferably, the aging mounting groove comprises a first side wall, a second side wall and a partition plate between the first side wall and the second side wall, grooves are formed in the first side wall, the second side wall and the partition plate, the grooves are used for mounting the aging plate, the insertion ports are formed in the first side wall, the second side wall and the bottom of the partition plate, and the aging plate is inserted in the insertion ports.

The utility model has the beneficial effects that:

the aging test device comprises a cabinet body, wherein the cabinet body comprises a high-temperature test box for testing the three-terminal voltage regulator and an aging power supply area for supplying power, the high-temperature test box is positioned above the aging power supply area, and the aging test device can be used for performing aging test on the three-terminal voltage regulator, so that the safety problem caused by aging defects can be reduced.

Secondly, the high-temperature test box comprises a box body and an aging mounting groove arranged in the box body, wherein at least one aging plate is arranged on the aging mounting groove, a three-terminal voltage stabilizer to be tested is inserted on the aging plate, a corresponding driving mounting groove is correspondingly arranged on the back surface of the box body corresponding to the aging mounting groove, at least one driving plate is arranged in the driving mounting groove, the aging plate and the driving plate are in one-to-one correspondence, the aging plate is connected with the driving plate through an insertion port, the insertion port is arranged on the back surface of the box body, at least one aging power supply is arranged on an aging power supply area, the aging power supply is connected with the driving plate and the aging plate, the debugged load is used for solving the inconvenience of multiple aging models, a plurality of groups of loads can be used in parallel to achieve the effect of increasing power, the aging time and the aging environment temperature can be set, and the use requirements can be further met, the constant current source can realize a constant current mode (constant current source), has high constant current precision and stable current quality, and makes up the condition of unstable current caused by the drift of the resistor at high temperature.

Drawings

Fig. 1 shows the relationship between each operation stage and failure rate of the failure phenomenon of the electronic component.

Fig. 2 is a schematic structural diagram of the present invention.

FIG. 3 is a front interior view of the housing of the present invention.

FIG. 4 is a schematic view of the interior of the back driving installation groove of the case of the present invention.

Fig. 5 is a schematic diagram of the constant current source mode circuit of the present invention.

FIG. 6 is a circuit diagram of a burn-in circuit according to the prior art.

FIG. 7 is a schematic view of the burn-in mounting groove of the present invention.

In the figure: 1, a cabinet body; 11, a high-temperature test chamber; 12, aging a power supply area; 110, a complete machine control and display module; 111, a box body; 112, an aging installation groove; 113, aging the board; 114, driving the mounting groove; 115, a drive plate; 116, a socket; 117, a master control singlechip; 118, an auxiliary power supply; 119, a test chamber control and display unit; 121, an aging power supply; 1121, side wall one; 1122, side wall two; 1123, a spacer.

Detailed Description

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 2, 3 and 4, an aging bench for three-terminal regulators comprises a cabinet body 1, the cabinet body 1 includes a high temperature test box 11 (capable of setting corresponding aging temperatures according to different test conditions) for testing the three-terminal regulators and an aging power supply area 12 for supplying power, the high temperature test box 11 is located above the aging power supply area 12, the high temperature test box 11 includes a box body 111 and an aging installation slot 112 arranged in the box body 111, at least one aging board 113 is installed on the aging installation slot 112, the three-terminal regulators to be tested are inserted into the aging board 113, correspondingly, a corresponding driving installation slot 114 is arranged on the back surface of the box body 111 corresponding to the aging installation slot 112, at least one driving board 115 is installed in the driving installation slot 114, the aging board 113 and the driving board 115 are in a one-to-one correspondence relationship, and the aging board 113 and the driving board 115 are connected through an insertion port 116, the interface 116 is arranged on the back of the box body 111, at least one aging power supply 121 is arranged on the aging power supply area 12, the aging power supply 121 is connected with the driving board 115 and the aging board 113, when the aging board 113 is loaded with aging devices of the three-terminal regulator, the aging power supply 121 controls the aging board 113 and the driving board 115 by adopting a constant current source mode, the resistance is cancelled by the mode, the current is controlled by adopting the constant current source, only the aging devices of the three-terminal regulator are inserted into the aging board 113 during aging, the converted current is set on the aging board 113, aging is started, and aging can be achieved.

Further, as shown in fig. 3, a main control single chip 117, an auxiliary power supply 118 (the auxiliary power supply is a plurality of sets of switching regulated power supplies with rated output, and provides working power supply for digital circuits and analog circuits of a system control part, including voltage output of +5V, ± 12V, etc.), a test box control and display unit 119 and a whole machine control and display module 110 are arranged on the box body 111, the auxiliary power supply 117 respectively provides electric power for the main control single chip 117 (the existing single chip can be adopted), the test box control and display unit 119 and the whole machine control and display module 110, the main control single chip 117, the test box control and display unit 119 and the whole machine control and display module 110 are respectively connected with a driving board 115 and an aging board 113, thus facilitating display, adjustment and control of the high temperature test box 11, wherein the test box control and display unit 119 and the whole machine control and display module 110 are human-machine interfaces for displaying data and data exchange, the data can be observed more clearly and visually, and the input voltage of each aging board 113, the constant current data of each device and the output voltage of each three-terminal regulator can be displayed in real time. Furthermore, the box body 111 is hinged with a box door, a glass window is arranged on the box door, the ageing board 113 can be installed through the box door, and the glass window is mainly convenient for checking the internal condition of the ageing installation groove 112.

Further, as shown in fig. 2 and 4, the burn-in power supply area 12 is a cabinet structure, which is used to place one or more burn-in power supplies 121 therein, in the present embodiment, eight aging power sources 121 are used in total, and correspondingly, sixteen aging plates 113 are used, sixteen driving boards 115 are also provided, two aging boards 113 are correspondingly connected to each aging power supply 121, the aging boards 113 are correspondingly connected to the driving boards 115 one by one, and by adopting a constant current source manner, because the mode cancels the resistor and adopts the constant current source to control the current, the aging device of the three-terminal regulator is only inserted into the aging plate 113 during aging, the aging can be achieved by setting the converted current on the aging board 113 and starting the aging, because the general current is not very large, a linear constant current source mode is adopted, the constant current source is high in constant current precision and stable in current quality, and the condition that current is unstable due to drift of the resistor at high temperature is made up. Furthermore, the aging power supply adopts a 60V/20A single-circuit high-reliability switching power supply (adopts an advanced switching power supply circuit in the early twenty-first century), and has the functions of constant current, constant voltage, overvoltage, overtemperature protection and the like. As shown in fig. 5, for the constant current source method adopted by the present invention, a socket for a corresponding aging device of the three-terminal regulator is provided on the aging board 113, the aging device of the three-terminal regulator on the aging board 113 is connected with a capacitor and an aging power supply 121, and the aging power supply 121 adopts an adjustable aging power supply, wherein a constant current source (the constant current source is provided on the driving board 115) provides a current after being set and converted, starts aging, and is a constant current source at this time, there is a special aging requirement for the three-terminal regulator in the requirement of the national military standard GJB597 (namely the national military standard GJB 597), such as the resistor R _ L adopted in the aging line in the prior art shown in fig. 6, for the aging line in the prior art, the resistor may drift and the resistance value may change due to the influence of high temperature during the aging process, therefore, underaging or over-aging is caused, different aging devices have to be replaced with different resistors, aging preparation time is long, and in order to overcome the defects of the prior art, the method avoids the problems that the resistors can drift and change resistance values to cause underaging or over-aging under the influence of high temperature in the prior art, and the different aging devices have to be replaced with different resistors, and the aging preparation time is long.

Further, as shown in fig. 7, the aging mounting groove 112 includes a first side wall 1121, a second side wall 1122, and a partition 1123 between the first side wall 1121 and the second side wall 1122, the first side wall 1121, the second side wall 1122, and the partition 1123 are provided with grooves, wherein the grooves are used for mounting the aging board 113, and the bottom of the first side wall 1121, the second side wall 1122, and the partition 1123 is provided with a socket 116, the socket 116 is used for socket mounting the aging board 113, in this embodiment, eight aging boards 113 can be mounted on each side of the partition 1123, so sixteen aging boards 113 can be mounted, which is more beneficial to aging detection of the aging device of the three-terminal regulator, and can meet the use requirement, and in this way, when mounting the aging board 113, the aging board 113 only needs to slide inwards along the grooves, and then the aging board 113 is inserted into the socket 116, so that the mounting of the aging board 113 is realized, and when dismounting, the aging board 113 only needs to slide outwards along the grooves, the operation is simple and convenient, and the aging plate 113 can be mounted and dismounted conveniently.

The standard parts that use in this application file all can purchase from the market, the concrete connected mode of each part all adopts conventional means such as ripe ageing power among the prior art, master control singlechip, proof box control and display element and complete machine control and display module internal part all adopt conventional model among the prior art, and its internal structure belongs to the prior art structure, the workman just can accomplish according to the prior art manual and carry out normal operation to it, including circuit connection adopts conventional connected mode among the prior art, no longer make specific statement here.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims

1. The utility model provides an ageing desk for being directed at three terminal regulator, includes cabinet body (1), cabinet body (1) is including being used for carrying out the high temperature test case (11) of testing three terminal regulator and ageing power supply district (12) that are used for the power supply, high temperature test case (11) are located the top of ageing power supply district (12), its characterized in that: the high-temperature test box (11) comprises a box body (111) and an aging mounting groove (112) arranged in the box body (111), at least one aging plate (113) is arranged on the aging mounting groove (112), a three-terminal voltage stabilizer to be tested is inserted into the aging plate (113), correspondingly, a corresponding driving mounting groove (114) is arranged on the back surface of the box body (111) corresponding to the aging mounting groove (112), at least one driving plate (115) is arranged in the driving mounting groove (114), the aging plate (113) and the driving plate (115) are in one-to-one correspondence, the aging plate (113) and the driving plate (115) are connected through an insertion port (116), the insertion port (116) is arranged on the back surface of the box body (111), and at least one aging power supply (121) is arranged on the aging power supply area (12), the aging power supply (121) is connected with the driving board (115) and the aging board (113).

2. The burn-in stage for a three terminal regulator of claim 1, wherein: the aging box is characterized in that a main control single chip (117), an auxiliary power supply (118), a test box control and display unit (119) and a whole machine control and display module (110) are arranged on the box body (111), the auxiliary power supply (118) respectively provides electric energy for the main control single chip (117), the test box control and display unit (119) and the whole machine control and display module (110), and the main control single chip (117), the test box control and display unit (119) and the whole machine control and display module (110) are respectively connected with the driving plate (115) and the aging plate (113).

3. The burn-in stage for a three terminal regulator of claim 2, wherein: the box body (111) is hinged with a box door, and a glass window is arranged on the box door.

4. The burn-in stage for a three terminal regulator of claim 1, wherein: the aging power supply area (12) is of a cabinet structure.

5. An aging station for a three terminal regulator as claimed in claim 1 or 2 or 3 or 4, characterized in that: the aging power supply (121) adopts eight, correspondingly, the aging board (113) adopts sixteen, then the drive board (115) adopts sixteen, each the aging power supply (121) is correspondingly connected with two the aging board (113), the aging board (113) with the drive board (115) are connected for one-to-one correspondence.

6. An aging station for a three terminal regulator as claimed in claim 1 or 2 or 3 or 4, characterized in that: the aging mounting groove (112) comprises a first side wall (1121), a second side wall (1122) and a partition plate (1123) between the first side wall (1121) and the second side wall (1122), grooves are formed in the first side wall (1121), the second side wall (1122) and the partition plate (1123), the grooves are used for mounting the aging plate (113), the inserting ports (116) are formed in the bottoms of the first side wall (1121), the second side wall (1122) and the partition plate (1123), and the inserting ports (116) are inserted into the aging plate (113).