CN101237181B - Feedback current sampling device for shunt erosion switch power - Google Patents
Feedback current sampling device for shunt erosion switch power Download PDFInfo
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- CN101237181B CN101237181B CN2008100185178A CN200810018517A CN101237181B CN 101237181 B CN101237181 B CN 101237181B CN 2008100185178 A CN2008100185178 A CN 2008100185178A CN 200810018517 A CN200810018517 A CN 200810018517A CN 101237181 B CN101237181 B CN 101237181B
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- shunt
- sampling
- current
- sampling device
- panel
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Abstract
The invention discloses a shunt type corrosion switch power feedback current sampling device, comprising a shunt panel, wherein, the upper part of the shunt panel is provided with a groove in which a sampling panel which is in series connection with a Hall sensor is arranged; the sampling panel is connected with the shunt panel. The shunt type corrosion switch power feedback current sampling device is reasonable in structure, and effectively lowers costs, reduces the structure volume and improves the efficiency of the power supply by using the small capacity Hall sensor to acquire heavy current signals.
Description
Technical field:
The present invention relates to a kind of erosion switch power feedback current sampling device.
Background technology:
The electrochemical corrosion aluminium foil is the first working procedure that electrolytic capacitor is made with paper tinsel, send out the consistency in hole, inhomogeneity requirement for satisfying aluminium foil, power supply for erosion needs good constant current performance, therefore corroding power control system generally all is designed to the Current Negative Three-Point Capacitance form, its required current feedback signal f (i) mostly picks up from the sampling device of corrosion power output end, the current sampling device be chosen in the influence that to a certain extent performance of corrosion power supply is had outbalance.The shunt that this sampling device adopts the copper-manganese material to make mostly, or the current sensor made from hall device.But because the corrosion power supply has the characteristics of low-voltage and high-current, its output current generally all will reach more than several kiloamperes, thereby it is all bigger with the sampling device power and the profile of its coupling, FL13 manganese copper diverter weight as a 2000A/75MV just reaches 3.9 kilograms, and its consumed power P=2000 * 0.075=150 (W), and the heat that distributes is big, and jumbo Hall element then reaches hundreds of units because of its price and volume is bigger than normal all to manufacturing and designing and using the little energy-conservation corrosion of volume to bring certain restriction with high frequency switch power.
Summary of the invention:
The object of the present invention is to provide a kind of rational in infrastructurely,, reduce cost, reduce structural volume effectively and improve the feedback current sampling device for shunt erosion switch power of power-efficient with low capacity Hall element collection big current signal.
Technical solution of the present invention is:
A kind of shunt erosion Switching Power Supply feedback current sampling device is characterized in that: comprise separation panel, on separation panel top groove is set, the sampling row who is serially connected with Hall element is set in the groove, sampling row be connected in parallel with separation panel.
Groove is divided into the first half of dress sampling row and the latter half that Hall element stretches into.On the sampling row coefficient correction recess is set.
The present invention is rational in infrastructure, with the big current signal of low capacity Hall element collection, reduces cost, reduces structural volume effectively and improve power-efficient.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a fundamental diagram of the present invention.
Fig. 2 is the configuration diagram of embodiment 1,2.
Fig. 3 is the configuration diagram of sampling row among the embodiment 1,3.
Fig. 4 is the configuration diagram of sampling row among the embodiment 2.
Fig. 5 is the configuration diagram of separation panel among the embodiment 3.
R1 is that busbar equivalent resistance, R2 are sampling row equivalent resistance, f among Fig. 1
I isCurrent feedback signal.
Embodiment:
Known to the fundamental diagram, I is the output total current of corrosion power supply, I=I among Fig. 1 according to the present invention
1+ I
2, I in the formula
1Be separation panel electric current, I
2Be sampling row electric current, by shunting formula I
2=I * R
1/ R
1+ R
2Known to, as long as R
1/ R
1+ R
2Be constant, then I
2Just can reflect the variation of total current I, otherwise, I controlled
2Constant output can guarantee the stable of total current I indirectly, and the Hall element of low capacity has picked up I just
2Signal as the current feedback signal f of power supply
iCome the output I of constant whole corrosion power supply.
Embodiment 1:
Be chosen in corrosion power supply (NHDI-1210) and go up enforcement the present invention, the specified 12V 1000A that is output as of this power supply, optional price ratio height, volume are little, weight has only 17 grams, the price only LA50P Hall element of thirty or forty unit substitutes manganese copper diverter as sampling device, its specified measurement electric current is 50A, with the corrosion electric power outputting current ratio be 1: 20.Therefore corresponding to the R among Fig. 1
1With R
2Ratio also should be about 1: 20.For make R in the following formula as far as possible
1/ R
1+ R
2Be a constant, with R
1With R
2Manufacturing materials adopt same batch identical material, and the two is worked to guarantee feedback signal f under same operating mode
iCan reflect the variation of corrosion electric power outputting current I exactly.(cross section is a groove of opening one 35mm * 26mm on the 20mm * 80mm), and the below of groove forms 20 * 54=1080mm the former output row of corrosion power supply
2The separation panel 1 in cross section is made a cross section in 1: 20 ratio again and is about 54mm
2About sampling row 2, LA-50P Hall element 3 embeds in the groove 4 of separation panels string on, again the screw crimping is welded or used in take a sample row 2 and separation panel 1, the formation excellent contact gets final product.Groove 4 is divided into the first half of dress sampling row and the latter half that Hall element stretches into, and on the sampling row coefficient correction recess 5 is set, and its big I is adjusted as required, makes to meet corresponding shunting ratio.
Embodiment 2:
On corrosion power supply (NHDI-2005), carried out expanding test, the specified 5V 2000A that is output as of this power supply, the specified measurement electric current of LA50P is 1: 40 with the ratio of the rated current of this corrosion power supply.Because accomplish the general and exchange of parts as far as possible, separation panel still adopts the frame mode among Fig. 2, mode of grooving still is 35mm * 26mm, and the net sectional area of separation panel is 20 * 54=1080mm
2, getting and making cross section with batch material by Fig. 4 with separation panel is 27mm
2Sampling row 6, LA50P Hall element string on embeds in the groove of separation panel, again take a sample row and separation panel is welded the formation excellent contact and gets final product.On the sampling row 6 coefficient correction recess 7 is set.
Embodiment 3:
The present invention is applied on the corrosion power supply (NHD-I0505) of the specified 6V of being output as 500A, because of the rated current of its power supply reduces separation panel 8 height 80mm are reduced to 53mm, and the fluting size constancy, so to form a cross section be 20mm * 27mm=540mm to this separation panel
2, be to calculate at 1: 10 by the ratio of the specified measurement electric current of LA50P Hall element and corrosion power supply rated current, the cross section of sampling is at 54mm
2About, therefore the part of using Fig. 3 is just right, on taking a sample row, Fig. 3 goes here and there the LA50P Hall element, embed in the groove 9 of separation panel, again the row of sampling is got final product with separation panel welding formation excellent contact, as causing that because of welding or crimping sampling row's electric current is excessive or too small, can adopt the length and the width that change groove among the sampling row to adjust.Groove is divided into the first half of dress sampling row and the latter half that Hall element stretches into.
Table 1: the comparison of several different sampling methods
| Sampling mode | Specified measurement electric current | Specified sampling voltage | Accuracy | The Fi rate of change | Complete machine output current rate of change |
| Manganese copper diverter | 1000A | 75MV | +/ -0.5％ | 0.4％ | ＜0.8％ |
| Embodiment 1 | 1000A | 4.1V (RL＝82Ω) | +/ -1％ | 0.35％ | ＜0.78％ |
| |
2000A | 4.1V (RL＝82Ω) | +/ -1％ | 0.41％ | ＜0.82％ |
| Embodiment 3 | 500A | 4.1V (RL＝82Ω) | +/ -1％ | 0.32％ | ＜0.75 ％ |
From above case study on implementation, the present invention program's accuracy on using is slightly larger than manganese copper diverter, but the Fi rate of change that works long hours is more or less the same, and can satisfy the requirement of the etching process of long time continuous working to power supply.
Claims (1)
1. feedback current sampling device for shunt erosion switch power, it is characterized in that: comprise the separation panel that flows through shunt current I1, on separation panel top groove is set, the sampling row of flowing through sampling current I2 and being serially connected with Hall element is set in the groove, sampling row be connected in parallel with separation panel; Groove is divided into the first half of dress sampling row and the latter half that Hall element stretches into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100185178A CN101237181B (en) | 2008-02-21 | 2008-02-21 | Feedback current sampling device for shunt erosion switch power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100185178A CN101237181B (en) | 2008-02-21 | 2008-02-21 | Feedback current sampling device for shunt erosion switch power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101237181A CN101237181A (en) | 2008-08-06 |
| CN101237181B true CN101237181B (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100185178A Expired - Fee Related CN101237181B (en) | 2008-02-21 | 2008-02-21 | Feedback current sampling device for shunt erosion switch power |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510681B (en) * | 2016-01-28 | 2018-08-24 | 南京交通职业技术学院 | A kind of non-linear current sampling assemble |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234648Y (en) * | 1995-12-05 | 1996-09-04 | 胡庆胜 | Power capacitor with display function |
| CN1191903A (en) * | 1996-12-06 | 1998-09-02 | 佳能株式会社 | Electrode structure, electrolytic etching process and apparatus using same, and process for producing photo-electricity generating device |
| CN2351747Y (en) * | 1998-12-25 | 1999-12-01 | 李平 | Battery capacity test instrument |
-
2008
- 2008-02-21 CN CN2008100185178A patent/CN101237181B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234648Y (en) * | 1995-12-05 | 1996-09-04 | 胡庆胜 | Power capacitor with display function |
| CN1191903A (en) * | 1996-12-06 | 1998-09-02 | 佳能株式会社 | Electrode structure, electrolytic etching process and apparatus using same, and process for producing photo-electricity generating device |
| CN2351747Y (en) * | 1998-12-25 | 1999-12-01 | 李平 | Battery capacity test instrument |
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| CN101237181A (en) | 2008-08-06 |
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