CN212693914U

CN212693914U - Capacitor batch aging system

Info

Publication number: CN212693914U
Application number: CN202021398267.8U
Authority: CN
Inventors: 徐沛; 翁东旭; 刘冲; 杨斌
Original assignee: China Electronics Standardization Institute
Current assignee: China Electronics Standardization Institute
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-12
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a capacitor batch aging system belongs to the ageing screening experiment field of condenser, and it includes the environmental test case, is connected and controls the computer of environmental test case, has the high voltage power supply and the digital multimeter of the independent output of multichannel with the environmental test case. A capacitor clamp is arranged in the environment test box, the capacitor clamp comprises a plurality of capacitor passages for clamping capacitors, each output of a high-voltage power supply is connected with one capacitor passage, and a computer is connected with the high-voltage power supply through a power supply control device; the digital multimeter is respectively connected with the plurality of capacitor paths through the patrol circuit and is used for measuring voltages at two ends of the capacitors in the plurality of capacitor paths and leakage current of the capacitor paths in a polling mode, and the computer is connected with the patrol circuit and the digital multimeter. The utility model discloses can full-automatic accomplish the overall process of the ageing experiment of condenser to effectual flexibility and the experimental work efficiency who promotes the ageing experiment of condenser.

Description

Capacitor batch aging system

Technical Field

The utility model relates to a condenser ageing screening experiment field especially indicates a condenser is ageing system in batches.

Background

The capacitor, often referred to as capacitor for short, is one of the electronic components used in electronic devices in large quantities, and is widely used in dc blocking ac, coupling, bypassing, filtering, tuning loop, energy conversion, control, etc. in the circuit. The aging test is an important step for detecting the reliability of the capacitor, and the poor aging performance can affect the service life of the capacitor, so the accuracy of the aging test is particularly important.

At present, the aging test of the capacitor has various modes such as manual, semi-automatic, automatic and the like. The manual mode is higher to the personnel requirement, needs the manual work to set up each equipment, and artifical record condenser channel voltage value, the experimental period is long, and breakdown voltage can not accurately be held, and is inefficient. The semi-automatic mode mainly controls environmental test equipment (incubator) and power supply equipment, manually records the voltage value of a capacitor channel, and the breakdown voltage cannot be accurately grasped; the automatic mode mostly adopts the design of multichannel sharing power supply, and each way voltage can not dispose alone, has influenced the flexibility of ageing experiment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a capacitor batch aging system can complete the overall process of the aging experiment of capacitor in full-automatic manner to the effectual flexibility and the experiment work efficiency that have promoted the aging experiment of capacitor.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

a capacitor batch burn-in system comprising an environmental test chamber, a computer connected to and controlling the environmental test chamber, a high voltage power supply having multiple independent outputs, and a digital multimeter, wherein:

a capacitor clamp is arranged in the environment test box and comprises a plurality of capacitor passages for clamping capacitors, each output of the high-voltage power supply is connected with one capacitor passage, and the computer is connected with the high-voltage power supply through a power supply control device; the digital multimeter is respectively connected with the plurality of capacitor paths through the patrol inspection circuit and is used for measuring voltages at two ends of the capacitors in the plurality of capacitor paths and leakage current of the capacitor paths in a polling mode, and the computer is connected with the patrol inspection circuit and the digital multimeter.

Further, the patrol and examine circuit includes relay switch matrix, the last resistance that has concatenated of capacitor route, the digital multimeter passes through relay switch matrix and is connected with the both ends of the condenser of a plurality of capacitor routes and resistance respectively, patrols the voltage of measuring the voltage at capacitor both ends and the voltage at resistance both ends in a plurality of capacitor routes in turn.

Further, the resistance value of the resistor is 200k omega, and the power is 2 w.

Further, the computer is respectively connected with the power supply control device and the inspection circuit through RS485 cables and controls the power supply control device and the inspection circuit.

Further, the power supply control device is connected with the high-voltage power supply through a digital signal wire and controls the high-voltage power supply, and the high-voltage power supply has 20 independent outputs.

Further, the computer is connected with the digital multimeter through a GPIB cable and reads the voltage value of the digital multimeter.

Further, the capacitor clamp is of a multilayer structure, each layer comprises 20 capacitor paths, and the 20 capacitor paths of each layer are respectively connected with 20 independent outputs of a high-voltage power supply.

Further, the capacitor clamp is 5 layers, and the number of the high-voltage power sources is 5.

Further, a spring clamping structure is arranged on the capacitor passage.

The utility model discloses following beneficial effect has:

the utility model discloses can full-automatic accomplish the overall process of the ageing experiment of condenser, overcome the shortcoming that can not dispose every path voltage alone in the ageing system of traditional condenser, each condenser path voltage can dispose alone, has modularization, advantage such as extensible concurrently, adopts the round mode of patrolling, measures condenser terminal voltage and route leakage current and record processing, accomplishes condenser breakdown detection and record automatically, the effectual flexibility and the experiment work efficiency that have promoted the ageing experiment of condenser.

Drawings

FIG. 1 is a schematic diagram of a capacitor batch burn-in system of the present invention;

fig. 2 is a schematic diagram of a capacitor path.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a capacitor batch aging system, as shown in fig. 1-2, it includes environmental test case 1, is connected and controls environmental test case 1's computer 2, high voltage power supply 3 and the digital multimeter 4 that have the independent output of multichannel with environmental test case 1, wherein:

a capacitor clamp 5 is arranged in the environmental test chamber 1, the capacitor clamp 5 comprises a plurality of capacitor passages 6 for clamping capacitors, each output 7 of the high-voltage power supply 3 is connected with one capacitor passage 6, and the computer 2 is connected with the high-voltage power supply 3 through a power supply control device 8; the digital multi-purpose meter 4 is respectively connected with the plurality of capacitor paths 6 through the patrol circuit 9 and is used for measuring the voltage at two ends of the capacitor 10 in the plurality of capacitor paths 6 and the leakage current of the capacitor paths 6 in a round patrol mode, and the computer 2 is connected with the patrol circuit 9 and the digital multi-purpose meter 4.

The computer is connected with and controls the environmental test chamber through the control cable 16 as an integral control core, can set various full-automatic, only-monitoring and full-manual use modes, and can flexibly configure the environmental test chamber. The environment test box is used for providing conditions such as required temperature and humidity for experiments, the high-voltage power supply is used for providing voltage for each path of capacitor channel, and the digital multimeter is used for measuring the voltage and the leakage current of the capacitor.

The utility model discloses a use as follows:

1. a capacitor via used in the capacitor clamp is selected through a computer interface, and a capacitor such as a chip capacitor is placed at a via clamping position of the selected capacitor via, so that the capacitor is clamped in the capacitor via.

2. The aging temperature, aging humidity, aging duration, acquisition interval, etc. are set via a computer interface, and voltage is configured separately for each capacitor channel. The high-voltage power supply has multiple independent outputs, and each independent output provides independent voltage for one capacitor channel, so that the voltage of each capacitor channel can be independently configured, and the flexibility of an aging experiment can be improved.

3. And starting an aging experiment, connecting and controlling the environmental test chamber to a proper test environment (such as temperature, humidity and the like) by the computer, connecting and controlling the power supply control device by the computer, connecting and controlling the high-voltage power supply by the power supply control device, and applying the output voltage of the high-voltage power supply to two ends of the capacitor passage.

4. The digital multimeter measures the voltage and leakage current of multiple capacitor paths through polling circuit, and the measurement result is read and recorded by computer. And observing the display color change of each capacitor passage of each layer, a temperature curve, a humidity curve, the polling measurement voltage and current values of each capacitor passage and the like through a computer.

5. When the capacitor of a certain capacitor channel is broken down, the computer records the number and the breakdown voltage of the capacitor channel, sets the voltage of the capacitor channel to be zero and releases the voltage control of the capacitor channel.

As shown in fig. 2, the foregoing inspection circuit 9 includes a relay switch matrix 11, a resistor 12 is connected in series on the capacitor path 6, the digital multi-purpose meter 4 is connected to two ends of a capacitor 10 and a resistor 12 of the plurality of capacitor paths 6 through the relay switch matrix 11, and the digital multi-purpose meter can be controlled to communicate with each capacitor path by controlling the gating of the relay switch matrix through a computer, so as to measure the voltage across the capacitor 10 and the voltage across the resistor 12 in the plurality of capacitor paths, thereby implementing the inspection of the plurality of capacitor paths. According to the voltage at the two ends of the resistor and the resistance value of the resistor, the leakage current of the capacitor channel can be calculated.

The resistance of the resistor 12 is preferably 200k Ω and the power is 2 w.

The computer 2 is respectively connected with the power supply control device 8 and the inspection circuit 9 through an RS485 cable 13 and controls the power supply control device 8 and the inspection circuit 9.

The power supply control device 8 is connected with the high voltage power supply 3 through a digital signal line 14 and controls the high voltage power supply 3, the high voltage power supply 3 has 20 independent outputs, each output voltage of the high voltage power supply is added to two ends of a corresponding capacitor passage, and the maximum output voltage of the high voltage power supply is 1000V.

The computer 2 is connected to the digital multi-purpose meter 4 through the GPIB cable 15 and reads the voltage value of the digital multi-purpose meter 4.

The computer 2 is connected with the environmental test chamber 1 through a control cable 16 and controls the environmental test chamber 1.

The capacitor clamp 5 is of a multilayer structure, each layer comprises 20 capacitor paths 6, and the 20 capacitor paths 6 of each layer are respectively connected with 20 independent outputs of one high-voltage power supply 3. Each capacitor passage has two sets of lead wires, one set of lead wires is connected to the high voltage power supply through the voltage cable and supplies power for the capacitor passage, and the other set of lead wires is connected to the inspection circuit through the voltage cable and measures voltage and current.

The embodiment of the utility model provides an it is 5 layers to prefer capacitor fixture 5, and high voltage power supply 3's quantity is 5, accomplishes 100 way paster condenser batch ageing tests automatically. Of course, the present invention is not limited to the number of capacitor paths, and may be more or less.

In order to adapt to capacitors of different sizes, the capacitor passage 6 is provided with a spring clamping structure.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A capacitor batch burn-in system comprising an environmental test chamber, a computer connected to and controlling the environmental test chamber, a high voltage power supply having multiple independent outputs, and a digital multimeter, wherein:

2. The capacitor batch aging system of claim 1, wherein the routing inspection circuit comprises a relay switch matrix, wherein resistors are connected in series with the capacitor paths, the digital multimeter is connected to the two ends of the capacitors and the resistors of the plurality of capacitor paths through the relay switch matrix, and the voltage across the capacitors and the voltage across the resistors in the plurality of capacitor paths are measured in a routing inspection manner.

3. The capacitor batch aging system of claim 2, wherein the resistor has a resistance of 200k Ω and a power of 2 w.

4. The capacitor batch aging system according to claim 2, wherein the computer is connected with and controls the power control device and the inspection circuit through RS485 cables, respectively.

5. The capacitor batch aging system according to claim 4, wherein the power supply control device is connected to and controls the high voltage power supply through a digital signal line, the high voltage power supply having 20 independent outputs.

6. The capacitor batch aging system of claim 5, wherein the computer is connected to the digital multimeter via a GPIB cable and reads the voltage values of the digital multimeter.

7. The capacitor batch aging system of claim 5, wherein the capacitor fixture is a multi-layer structure, each layer comprising 20 capacitor vias, the 20 capacitor vias of each layer being connected to 20 independent outputs of a high voltage power supply.

8. The capacitor batch aging system of claim 7, wherein the capacitor fixture is 5 layers and the number of high voltage power sources is 5.

9. The capacitor batch aging system of any one of claims 1-8, wherein a spring clamping structure is disposed on the capacitor passages.