CN113834982B - Online durability detection device and mode for core pack group - Google Patents
Online durability detection device and mode for core pack group Download PDFInfo
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- CN113834982B CN113834982B CN202110959100.7A CN202110959100A CN113834982B CN 113834982 B CN113834982 B CN 113834982B CN 202110959100 A CN202110959100 A CN 202110959100A CN 113834982 B CN113834982 B CN 113834982B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
- G01R31/013—Testing passive components
- G01R31/016—Testing of capacitors
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses an online durability detection device and an online durability detection mode for a core pack group, and belongs to the technical field of capacitor durability detection. The utility model provides a core package group online durability detection device and mode, includes the detection base, locates the condenser ripple power supply box of detection base upper end one side and locates the high low temperature test box of detection base upper end opposite side, the durability detection mechanism that is used for carrying out the durability detection to aluminium electrolytic capacitor core package group is located to high low temperature test box inside, through combining a plurality of condenser core packages into the core package group, carries out the durability detection to the core package group alone, has realized the effect that increases the product fault-tolerant rate, reduces the cost, through the cooperation of core package installation component and core package wiring subassembly, can be quick fix and the wiring to aluminium electrolytic capacitor core package group, and whole installation time is shorter, has solved the unable problem of making the durability detection of traditional aluminium electrolytic capacitor core package semi-manufactured goods.
Description
Technical Field
The invention relates to the technical field of capacitor durability detection, in particular to an online durability detection device and an online durability detection mode for a core pack.
Background
Capacitors are components that store electricity and energy, and are one of the most commonly used electronic components. The filter has the advantages that the filter mainly cuts off direct current of a circuit in an alternating current mode, simultaneously stores charges and releases the charges, a good filter machine is provided, a pulsation signal can be output in a smooth mode, and the durability of the capacitor is an important basis for reflecting the service life of the filter.
The test sample of the existing capacitor durability test is generally a finished capacitor, the finished capacitor is quick and convenient to perform online durability test, but because the test time of the capacitor durability test is long and the charge and discharge times are more, the test sample is easy to discard, the test cost is increased, if the online durability test is performed on a core pack group before the finished capacitor is not manufactured, although the bad cost can be controlled, the online durability test (such as a bolt electrolytic capacitor core pack, a tantalum electrolytic capacitor core pack and the like) can be directly performed on two poles of the core pack group, and the online durability condition (such as an aluminum electrolytic capacitor core pack) can not be performed on the core pack group only by connecting one pole with the other pole without the electrode.
Disclosure of Invention
The invention aims at: in order to solve the above-mentioned problems, a device and a method for detecting the on-line durability of a core pack are provided.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the online durability detection device for the core package group comprises a detection base, a capacitor ripple power box arranged on one side of the upper end of the detection base and a high-low temperature test box arranged on the other side of the upper end of the detection base, wherein a durability detection mechanism for detecting the durability of the aluminum electrolytic capacitor core package group is arranged in the high-low temperature test box;
the durability detection mechanism comprises a core package installation component which is arranged below the inner part of the high-low temperature test box and used for installing an aluminum electrolytic capacitor core package group, and a core package wiring component which is arranged above the inner part of the high-low temperature test box and used for wiring the aluminum electrolytic capacitor core package group, wherein the aluminum electrolytic capacitor core package group consists of a plurality of capacitor core packages and an L-shaped test board, and an outgoing strip at the upper end of the capacitor core package is connected with the lower end of the L-shaped test board through soldering.
As a further description of the above technical solution:
the core-wrapped wiring assembly comprises two electric telescopic rods symmetrically arranged at the upper end of the high-low temperature test box and a sliding shell slidingly arranged above the inside of the high-low temperature test box, and the output ends of the two electric telescopic rods are connected with the upper end of the sliding shell;
the middle part of the sliding shell is provided with a sliding block in a sliding manner, two ends of the sliding block are provided with rotating rods, two sides of the sliding shell are provided with sliding grooves for the rotating rods to slide, the middle part of the sliding block is provided with a sliding rod in a sliding manner, the middle part of the upper end of the sliding rod is sleeved with a reset spring, one end of the reset spring is connected with the upper end of the sliding block, and the other end of the reset spring is connected with an annular convex block in the middle part of the sliding rod;
the lower end of the sliding rod is provided with a shell, the middle part of the shell is rotationally provided with a bidirectional screw rod, the bidirectional screw rod is symmetrically provided with two locking plates through threaded connection, the lower ends of the locking plates are respectively provided with a fixed copper bar outside the shell, and the fixed copper bars are arranged inside the locking plates;
the upper end of the sliding rod is provided with an anode output line, the inside of the sliding rod is hollow, a wire is arranged in the hollow cavity, the upper end of the wire is electrically connected with the anode output line, and the upper end of the wire is electrically connected with the upper end of the fixed copper bar.
As a further description of the above technical solution:
the core pack installation assembly comprises a shell arranged at the bottom of the high-low temperature test box, a driving motor arranged at the outer side of the high-low temperature test box and a metal disc rotationally arranged at the lower part inside the high-low temperature test box, a driving screw rod is arranged inside the shell, the output end of the driving motor is connected with one end of the driving screw rod, an inverted T-shaped driving block is arranged in the middle of the driving screw rod in a threaded connection manner, and two hinging seats are symmetrically arranged at the upper end of the shell;
the middle part of the lower end of the metal disc is provided with a mounting plate, two ends of the mounting plate are hinged with two rotating rods, the lower ends of the two rotating rods are respectively hinged with a hinging seat arranged below the two rotating rods, the middle part of the lower end of the mounting plate is provided with a driving rod, and the lower end of the driving rod is hinged with the upper end of an inverted T-shaped driving block;
steel balls are laid at the bottom of the metal disc, two wavy fixed blocks are symmetrically arranged above the inner side wall of the metal disc in a sliding mode, a negative electrode output line is arranged on one side of the lower end of the metal disc, and the negative electrode output line is connected with an electrode plate at the bottom of the metal disc.
As a further description of the above technical solution:
the material that wave-shaped fixed block is close to electric capacity core package one side is fire-retardant sponge, wave-shaped fixed block upper end width is greater than wave-shaped fixed block lower extreme width.
As a further description of the above technical solution:
the metal disc is connected with the mounting plate through a connecting bolt.
As a further description of the above technical solution:
the hinge joint of the driving rod and the inverted T-shaped driving block is in clearance fit.
As a further description of the above technical solution:
the positive electrode output line is electrically connected with the capacitor ripple power supply box power supply output end, the negative electrode output line is connected with the capacitor ripple power supply box power supply input end, the capacitor ripple power supply box signal output end and the high-low temperature test box signal output end are electrically connected with the external controller signal input end, and the external controller signal output end is electrically connected with the capacitor ripple power supply box signal input end, the high-low temperature test box signal input end and the display screen signal input end.
As a further description of the above technical solution:
the method comprises the following steps:
A. firstly, selecting a proper test board according to the magnitude of test current to avoid damaging the test board due to overlarge current, and then connecting a plurality of capacitor core packages with an L-shaped test board through soldering to form an aluminum electrolytic capacitor core package group;
B. and then placing the welded aluminum electrolytic capacitor core pack into a stably placed metal disc, wherein steel balls are fully paved at the bottom of the metal disc, and the total volume of the steel balls is 1/3 of the internal volume of the metal disc.
C. The electric telescopic rod is started, the sliding shell is enabled to descend to a proper height, the bidirectional screw rod is screwed down, the locking plate clamps the upper end of the L-shaped test plate, the fixed copper bar is in contact with the L-shaped test plate, the positive electrode output line is electrically connected with the power output end of the capacitor ripple power supply box, and the negative electrode output line is connected with the power input end of the capacitor ripple power supply box.
D. The high-low temperature test box is electrified and then starts to work, the internal temperature of the high-low temperature test box is increased to 105+/-2 ℃, the driving motor is started to enable the metal disc to rotate in the high-low temperature test box, so that the aluminum electrolytic capacitor core pack is heated uniformly, rated voltage is applied through the capacitor ripple power box, data information such as the capacity change, loss tangent, equivalent series resistance, leakage current and the like of the aluminum electrolytic capacitor core pack at the rated voltage are recorded, and the appearance condition of the aluminum electrolytic capacitor core pack is checked through manual observation.
E. And integrating the measured data of the groups by an external data processor, drawing a time fitting curve in the same coordinate system, processing by corresponding software to obtain a linear durability detection data distribution diagram of the core package group, and displaying the linear durability detection data distribution diagram on a display screen.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. according to the invention, the plurality of capacitor core packages are combined and welded into the core package group, and the durability detection is carried out on the core package group alone, so that the effect of increasing the fault tolerance rate of the product is realized, the cost is reduced, the aluminum electrolytic capacitor core package group can be quickly fixed and connected through the mutual matching of the core package installation component and the core package wiring component, the overall installation time is shorter, and the problem that the durability detection cannot be carried out on the traditional aluminum electrolytic capacitor core package semi-finished product is solved.
2. According to the invention, the Robert link mechanism is formed by the mutual matching of the mounting plate, the rotating rod and the driving rod, and the special motion track of the Robert link mechanism, namely, a point outside the connecting line of the two end points of the rotating rod, is used for performing approximate linear motion, so that the rotation of the metal disc in the high-low temperature test box is realized, the problem of uneven heating of the aluminum electrolytic capacitor core pack is solved, and the problem of fluctuation of experimental data caused by uneven steel ball distribution in the metal disc is also solved.
3. According to the invention, the L-shaped test board can be electrically connected with the L-shaped test board when the L-shaped test board rotates at any angle through the fixing of the core package wiring assembly, so that the phenomenon that the joint of the metal clip and the lead is easy to tear due to the fact that the traditional metal clip clamps the test board is avoided, the rotation angle and the rotation times of the aluminum electrolytic capacitor core package in the space are increased, and the service life of the durability detection mechanism is greatly prolonged.
Drawings
Fig. 1 is a schematic diagram showing a structure of a durability detection mechanism provided according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of a core pack installation assembly provided in accordance with an embodiment of the present invention;
FIG. 3 shows a schematic diagram of a core-spun yarn assembly provided in accordance with an embodiment of the present invention;
FIG. 4 shows an enlarged schematic view of FIG. 3A provided in accordance with an embodiment of the present invention;
FIG. 5 shows a schematic cut-away view of a sliding housing provided in accordance with an embodiment of the present invention;
FIG. 6 illustrates a rotational schematic of a core wrap wire assembly provided in accordance with an embodiment of the present invention;
FIG. 7 illustrates a schematic rotational view of a core pack mounting assembly provided in accordance with an embodiment of the present invention;
fig. 8 shows a schematic diagram of a core pack structure of an aluminum electrolytic capacitor according to an embodiment of the present invention;
fig. 9 shows a schematic diagram of a durability detection circuit provided according to an embodiment of the present invention.
Legend description: 1. detecting a base; 2. a capacitor ripple power box; 3. a high-low temperature test chamber; 4. a durability detection mechanism; 5. a core pack installation assembly; 6. a core-in-wire assembly; 7. an aluminum electrolytic capacitor core pack; 601. a sliding housing; 602. a slide block; 603. a slide bar; 605. a housing; 606. a bidirectional screw; 607. a locking plate; 608. fixing a copper bar; 609. a return spring; 610. an electric telescopic rod; 501. a housing; 502. a metal plate; 503. a mounting plate; 504. a rotating lever; 505. a driving rod; 506. a hinge base; 507. an inverted T-shaped driving block; 508. driving a screw rod; 509. a driving motor; 510. a wave-shaped fixed block; 701. a capacitor core bag; 702. l-shaped test plate.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution:
the online durability detection device of the core package group comprises a detection base 1, a capacitor ripple power box 2 arranged on one side of the upper end of the detection base 1, and a high-low temperature test box 3 arranged on the other side of the upper end of the detection base 1, wherein a durability detection mechanism 4 for detecting the durability of an aluminum electrolytic capacitor core package group 7 is arranged in the high-low temperature test box 3;
the durability detection mechanism 4 comprises a core package installation component 5 arranged below the inner part of the high-low temperature test box 3 and used for installing an aluminum electrolytic capacitor core package group 7, and a core package wiring component 6 arranged above the inner part of the high-low temperature test box 3 and used for wiring the aluminum electrolytic capacitor core package group 7, wherein the aluminum electrolytic capacitor core package group 7 consists of a plurality of capacitor core packages 701 and an L-shaped test plate 702, and an extraction strip at the upper end of the capacitor core package 701 is connected with the lower end of the L-shaped test plate 702 through soldering.
Further, the core-spun yarn connecting component 6 comprises two electric telescopic rods 610 symmetrically arranged at the upper end of the high-low temperature test chamber 3 and a sliding shell 601 slidably arranged above the inside of the high-low temperature test chamber 3, and the output ends of the two electric telescopic rods 610 are connected with the upper end of the sliding shell 601;
the middle part of the sliding shell 601 is provided with a sliding block 602 in a sliding manner, two ends of the sliding block 602 are provided with rotating rods, two sides of the sliding shell 601 are provided with sliding grooves for the rotating rods to slide, the middle part of the sliding block 602 is provided with a sliding rod 603 in a sliding manner, the middle part of the upper end of the sliding rod 603 is sleeved with a reset spring 609, one end of the reset spring 609 is connected with the upper end of the sliding block 602, and the other end of the reset spring 609 is connected with an annular convex block in the middle part of the sliding rod 603;
the lower end of the slide bar 603 is provided with a shell 605, the middle part of the shell 605 is rotationally provided with a bidirectional screw rod 606, the bidirectional screw rod 606 is symmetrically provided with two locking plates 607 through threaded connection, the lower ends of the locking plates 607 are respectively provided with a fixed copper bar 608 outside the shell 605, and the fixed copper bars 608 are arranged inside the locking plates 607;
the upper end of the slide bar 603 is provided with a positive electrode output line, the slide bar 603 is hollow, a wire is arranged in the hollow, the upper end of the wire is electrically connected with the positive electrode output line, and the upper end of the wire is electrically connected with the upper end of the fixed copper bar 608.
Further, the core pack installation assembly 5 comprises a shell 501 arranged at the bottom of the high-low temperature test chamber 3, a driving motor 509 arranged at the outer side of the high-low temperature test chamber 3 and a metal disc 502 rotationally arranged at the lower part of the inner part of the high-low temperature test chamber 3, a driving screw 508 is arranged in the shell 501, the output end of the driving motor 509 is connected with one end of the driving screw 508, an inverted T-shaped driving block 507 is arranged in the middle of the driving screw 508 in a threaded connection manner, and two hinging seats 506 are symmetrically arranged at the upper end of the shell 501;
the middle part of the lower end of the metal disc 502 is provided with a mounting plate 503, two ends of the mounting plate 503 are hinged with two rotating rods 504, the lower ends of the two rotating rods 504 are respectively hinged with a hinging seat 506 arranged below, the middle part of the lower end of the mounting plate 503 is provided with a driving rod 505, and the lower end of the driving rod 505 is hinged with the upper end of an inverted T-shaped driving block 507;
steel balls are laid at the bottom of the metal disc 502, two wavy fixed blocks 510 are symmetrically arranged above the inner side wall of the metal disc 502 in a sliding manner, a negative output line is arranged on one side of the lower end of the metal disc 502, and the negative output line is connected with an electrode plate at the bottom of the metal disc 502.
Further, the material that wave type fixed block 510 is close to electric capacity core package 701 one side is fire-retardant sponge, and wave type fixed block 510 upper end width is greater than wave type fixed block 510 lower extreme width, extrudees wave type fixed block 510 downwards and just can produce the oppression to electric capacity core package 701 to it is spacing with aluminium electrolytic capacitor core package group 7, and fire-retardant sponge can prevent effectively that electric capacity core package 701 from damaging wave type fixed block 510 after the burning.
Further, the metal plate 502 is connected with the mounting plate 503 through a connecting bolt, if the metal plate 502 with different sizes is to be replaced, the connecting bolt at the lower end of the mounting plate 503 can be directly detached, and then the metal plate 502 with different sizes can be replaced.
Further, since the hinge of the driving rod 505 and the inverted T-shaped driving block 507 is in clearance fit, and the rib link mechanism performs linear-like motion, the displacement of the linear-like motion can be compensated by the clearance fit of the hinge of the inverted T-shaped driving block 507 and the driving rod 505.
Further, the positive electrode output line is electrically connected with the power output end of the capacitor ripple power box 2, the negative electrode output line is connected with the power input end of the capacitor ripple power box 2, the signal output end of the capacitor ripple power box 2 and the signal output end of the high-low temperature test box 3 are electrically connected with the signal input end of an external controller, and the signal output end of the external controller is electrically connected with the signal input end of the capacitor ripple power box 2, the signal input end of the high-low temperature test box 3 and the signal input end of a display screen.
Further, the method comprises the following steps:
A. firstly, selecting a proper test board according to the magnitude of test current to avoid damaging the test board due to overlarge current, and then connecting a plurality of capacitor core packages 701 with an L-shaped test board 702 through soldering to form an aluminum electrolytic capacitor core package group 7;
B. and then placing the welded aluminum electrolytic capacitor core pack 7 into a stably placed metal disc 502, wherein steel balls are fully paved at the bottom of the metal disc 502, and the total volume of the steel balls is 1/3 of the internal volume of the metal disc 502.
C. The electric telescopic rod 610 is started, the sliding shell 601 is lowered to a proper height, the bidirectional screw rod 606 is screwed down, the locking plate 607 clamps the upper end of the L-shaped test plate 702, the fixed copper bar 608 is in contact with the L-shaped test plate 702, the positive output line is electrically connected with the power output end of the capacitor ripple power supply box 2, and the negative output line is further connected with the power input end of the capacitor ripple power supply box 2.
D. The high-low temperature test box 3 starts working after being electrified, the internal temperature of the high-low temperature test box 3 is raised to 105+/-2 ℃, the driving motor 509 is started to enable the metal disc 502 to rotate in the high-low temperature test box 3, so that the aluminum electrolytic capacitor core pack 7 is uniformly heated, rated voltage is applied through the capacitor ripple power box 2, data information such as capacity change of the aluminum electrolytic capacitor core pack 7 at the rated voltage, loss angle tangent, equivalent series resistance, leakage current and the like is recorded, and the appearance condition of the aluminum electrolytic capacitor core pack 7 is checked through manual observation.
E. And integrating the measured data of the groups by an external data processor, drawing a time fitting curve in the same coordinate system, processing by corresponding software to obtain a linear durability detection data distribution diagram of the core package group, and displaying the linear durability detection data distribution diagram on a display screen.
Working principle: when the aluminum electrolytic capacitor core pack group 7 is used, firstly, a proper test plate is selected according to the magnitude of test current, so that the test plate is prevented from being damaged due to overlarge current, if 6 capacitor core packs 701 are connected in series, the test current is 6 times of the standard current of the 6 capacitor core packs, and then the plurality of capacitor core packs 701 are connected with an L-shaped test plate 702 through soldering, so that the aluminum electrolytic capacitor core pack group 7 is manufactured;
placing the aluminum electrolytic capacitor core pack 7 into a horizontally placed metal disc 502, wherein steel balls are paved at the bottom of the metal disc 502, the total capacity of the steel balls is 1/3 of the internal volume of the metal disc 502, the lower end of a negative electrode of the aluminum electrolytic capacitor core pack 7 is contacted with the upper end of the steel balls, and after the aluminum electrolytic capacitor core pack 7 is placed, two wavy fixing blocks 510 are placed into the metal disc 502 so as to fix the aluminum electrolytic capacitor core pack 7;
when the aluminum electrolytic capacitor core pack 7 is placed in the metal disc 502 for fixing, the electric telescopic rod 610 is started, the electric telescopic rod 610 stretches out to drive the sliding shell 601 to move downwards, so that the core pack wiring assembly 6 moves downwards integrally, after the sliding shell 601 moves downwards to a proper position, the bidirectional screw rod 606 is screwed, so that the two locking plates 607 move oppositely, one side of the upper end of the L-shaped test plate 702 is clamped, meanwhile, the fixed copper strip 608 is contacted with the L-shaped test plate 702, after the two locking plates 607 clamp the L-shaped test plate 702, the positive output line at the upper end of the sliding rod 603 is electrically connected with the power output end of the capacitor ripple power box 2, and then the negative output line is connected with the power input end of the capacitor ripple power box 2, so that the integral wiring work is completed;
after wiring is completed, the high-low temperature test chamber 3 is controlled by the external controller to start working, the internal temperature of the high-low temperature test chamber 3 slowly rises to 105+/-2 ℃, meanwhile, the external controller controls the driving motor 509 to rotate positively after being electrified, the driving motor 509 drives the driving screw 508 to rotate, the driving screw 508 drives the inverted T-shaped driving block 507 to move leftwards, thereby driving the driving rod 505 to rotate rightwards, under the limit of the two rotating rods 504, the mounting plate 503 rotates rightwards, further the metal disc 502 rotates rightwards, thereby enabling the aluminum electrolytic capacitor core package group 7 to rotate rightwards and be heated,
when the aluminum electrolytic capacitor core pack 7 rotates rightwards, the L-shaped test plate 702 also rotates rightwards, so that the whole shell 605 rotates rightwards by a certain angle, the sliding block 602 is driven to rotate in the sliding shell 601 by a certain angle, and meanwhile, the sliding rod 603 moves upwards, so that the L-shaped test plate 702 can be firmly contacted with the L-shaped test plate 702 even if the L-shaped test plate 702 rotates the core pack wiring assembly 6;
the external controller controls the capacitor ripple power box 2 to electrify, rated voltage is applied to the aluminum electrolytic capacitor core pack 7, data information such as rated voltage content change, loss tangent, equivalent series resistance, leakage current and the like of the aluminum electrolytic capacitor core pack 7 is recorded, the appearance condition of the aluminum electrolytic capacitor core pack 7 is checked through manual observation, a plurality of groups of measured data are integrated through an external data processor and a time fitting curve is drawn in the same coordinate system, and a core pack online durability detection data distribution diagram is obtained through corresponding software processing and is displayed on a display screen.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The online durability detection device for the core package group comprises a detection base (1), a capacitor ripple power box (2) arranged on one side of the upper end of the detection base (1) and a high-low temperature test box (3) arranged on the other side of the upper end of the detection base (1), and is characterized in that a durability detection mechanism (4) for detecting the durability of an aluminum electrolytic capacitor core package group (7) is arranged in the high-low temperature test box (3);
the durability detection mechanism (4) comprises a core package installation component (5) arranged below the inside of the high-low temperature test box (3) and used for installing an aluminum electrolytic capacitor core package group (7), and a core package wiring component (6) arranged above the inside of the high-low temperature test box (3) and used for wiring the aluminum electrolytic capacitor core package group (7), the aluminum electrolytic capacitor core package group (7) is composed of a plurality of capacitor core packages (701) and L-shaped test plates (702), and an extraction strip at the upper end of each capacitor core package (701) is connected with the lower end of each L-shaped test plate (702) through soldering.
2. The device for detecting the online durability of the core-spun yarn package according to claim 1, wherein the core-spun yarn package connection assembly (6) comprises two electric telescopic rods (610) symmetrically arranged at the upper end of the high-low temperature test chamber (3) and a sliding shell (601) slidingly arranged above the inside of the high-low temperature test chamber (3), and the output ends of the two electric telescopic rods (610) are connected with the upper end of the sliding shell (601);
the middle part of the sliding shell (601) is provided with a sliding block (602) in a sliding manner, two ends of the sliding block (602) are provided with rotating rods, two sides of the sliding shell (601) are provided with sliding grooves for the rotating rods to slide, the middle part of the sliding block (602) is provided with a sliding rod (603) in a sliding manner, the middle part of the upper end of the sliding rod (603) is sleeved with a reset spring (609), one end of the reset spring (609) is connected with the upper end of the sliding block (602), and the other end of the reset spring (609) is connected with an annular convex block in the middle part of the sliding rod (603);
the lower end of the sliding rod (603) is provided with a shell (605), the middle part of the shell (605) is rotationally provided with a bidirectional screw rod (606), the bidirectional screw rod (606) is symmetrically provided with two locking plates (607) through threaded connection, the lower ends of the locking plates (607) are respectively provided with a fixed copper bar (608) outside the shell (605), and the fixed copper bars (608) are arranged at the inner sides of the locking plates (607);
the upper end of the sliding rod (603) is provided with an anode output line, the sliding rod (603) is hollow, a wire is arranged in the hollow cavity, the upper end of the wire is electrically connected with the anode output line, and the upper end of the wire is electrically connected with the upper end of the fixed copper bar (608).
3. The on-line durability detection device of the core pack group according to claim 2, wherein the core pack installation assembly (5) comprises a shell (501) arranged at the bottom of the high-low temperature test box (3), a driving motor (509) arranged at the outer side of the high-low temperature test box (3) and a metal disc (502) rotationally arranged at the inner lower part of the high-low temperature test box (3), a driving screw rod (508) is arranged in the shell (501), the output end of the driving motor (509) is connected with one end of the driving screw rod (508), an inverted T-shaped driving block (507) is arranged at the middle part of the driving screw rod (508) through threaded connection, and two hinging seats (506) are symmetrically arranged at the upper end of the shell (501);
the middle part of the lower end of the metal disc (502) is provided with a mounting plate (503), two ends of the mounting plate (503) are hinged with two rotating rods (504), the lower ends of the two rotating rods (504) are respectively hinged with a hinging seat (506) arranged below, the middle part of the lower end of the mounting plate (503) is provided with a driving rod (505), and the lower end of the driving rod (505) is hinged with the upper end of an inverted T-shaped driving block (507);
steel balls are paved at the bottom of the metal disc (502), two wavy fixed blocks (510) are symmetrically arranged above the inner side wall of the metal disc (502) in a sliding mode, a negative electrode output line is arranged on one side of the lower end of the metal disc (502), and the negative electrode output line is connected with an electrode plate at the bottom of the metal disc (502).
4. The device for detecting the online durability of the core-in-package assembly according to claim 3, wherein the material of one side of the wavy fixed block (510) close to the capacitor core-in-package (701) is flame-retardant sponge, and the width of the upper end of the wavy fixed block (510) is larger than that of the lower end of the wavy fixed block (510).
5. The on-line durability testing device of claim 4, wherein the metal plate (502) is connected to the mounting plate (503) by means of connecting bolts.
6. The device for detecting the online durability of a core pack according to claim 5, wherein the driving rod (505) is in clearance fit with the inverted T-shaped driving block (507) at the hinge.
7. The on-line durability detection device of claim 6, wherein the positive output line is electrically connected to a power output end of the capacitor ripple power box (2), the negative output line is electrically connected to a power input end of the capacitor ripple power box (2), the signal output end of the capacitor ripple power box (2) and the signal output end of the high-low temperature test box (3) are electrically connected to signal input ends of an external controller, and the signal output ends of the external controller are electrically connected to the signal input end of the capacitor ripple power box (2), the signal input end of the high-low temperature test box (3) and the signal input end of the display screen.
8. The detection method using the core-pack online durability detection device according to claim 7, comprising the steps of:
A. firstly, selecting a proper test board according to the magnitude of test current to avoid damaging the test board due to overlarge current, and then connecting a plurality of capacitor core packages (701) with an L-shaped test board (702) through soldering to form an aluminum electrolytic capacitor core package group (7);
B. then placing the welded aluminum electrolytic capacitor core pack (7) into a stably placed metal disc (502), wherein steel balls are paved on the bottom of the metal disc (502), and the total capacity of the steel balls is 1/3 of the internal volume of the metal disc (502);
C. starting an electric telescopic rod (610) to enable a sliding shell (601) to descend to a proper height, screwing up a bidirectional screw rod (606) to enable a locking plate (607) to clamp the upper end of an L-shaped test plate (702) and fix a copper bar (608) to be in contact with the L-shaped test plate (702), electrically connecting a positive output line with the power output end of a capacitor ripple power box (2), and then connecting a negative output line with the power input end of the capacitor ripple power box (2);
D. the high-low temperature test box (3) starts to work after being electrified, the internal temperature of the high-low temperature test box (3) is raised to 105+/-2 ℃, a driving motor (509) is started to enable a metal disc (502) to rotate in the high-low temperature test box (3), so that the aluminum electrolytic capacitor core pack (7) is uniformly heated, rated voltage is applied through a capacitor ripple power box (2), data information such as the capacity change, loss tangent, equivalent series resistance, leakage current and the like of the aluminum electrolytic capacitor core pack (7) in the rated voltage is recorded, and the appearance condition of the aluminum electrolytic capacitor core pack (7) is checked through manual observation;
E. and integrating the measured data of the groups by an external data processor, drawing a time fitting curve in the same coordinate system, processing by corresponding software to obtain a linear durability detection data distribution diagram of the core package group, and displaying the linear durability detection data distribution diagram on a display screen.
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