CN221039217U - Current measuring device for direct-current column cabinet - Google Patents
Current measuring device for direct-current column cabinet Download PDFInfo
- Publication number
- CN221039217U CN221039217U CN202322756876.6U CN202322756876U CN221039217U CN 221039217 U CN221039217 U CN 221039217U CN 202322756876 U CN202322756876 U CN 202322756876U CN 221039217 U CN221039217 U CN 221039217U
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- China
- Prior art keywords
- socket
- iron core
- circuit board
- detection chip
- current detection
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Links
- 238000001514 detection method Methods 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a current measuring device for a direct-current column head cabinet, which comprises a shell, an iron core, a current detection chip and a circuit board, wherein the iron core and the circuit board are sequentially arranged in the shell; the center of the shell is provided with a perforation channel; the circuit board is close to a side top of iron core and is equipped with the electric current detection chip, electric current detection chip inserts in the air gap of iron core, another side top of circuit board is equipped with calibration socket, and external equipment realizes the calibration to electric current detection chip through calibration socket, and the bottom of this side is equipped with first socket, second socket and third socket side by side. The utility model is compatible with cables and copper bars, adopts a single power supply to supply power, and realizes quick wiring by taking the reference voltage of signal output as a fixed value.
Description
Technical Field
The utility model relates to the technical field of current measurement, in particular to a current measurement device for a direct-current column head cabinet.
Background
The precise power supply system needs to monitor the power supply input and each output, and most current measuring devices for the direct current column head cabinet have the following defects:
(1) The existing current measuring device can only thread a cable or only thread a copper bar, and cannot be compatible with the cable and the copper bar.
(2) The existing current measuring device adopts positive and negative power supplies to supply power, and negative power supplies are needed to be provided on site, so that the power cost is increased.
(3) The existing current measuring device adopts potentiometer manual debugging, so that the debugging efficiency is low and the precision is poor.
(4) The current measuring device can not be connected through the wire harness rapidly, and the connection efficiency is low.
Disclosure of Invention
The utility model aims to overcome the defects, and provides a current measuring device for a direct-current column head cabinet, which is compatible with cables and copper bars, adopts a single power supply to supply power, and realizes quick wiring by taking the reference voltage of signal output as a fixed value.
The purpose of the utility model is realized in the following way:
The current measuring device for the direct-current column head cabinet comprises a shell, an iron core, a current detection chip and a circuit board, wherein the iron core and the circuit board are sequentially arranged in the shell; the center of the shell is provided with a perforation channel; the circuit board is provided with a current detection chip close to the top of one side surface of the iron core, the current detection chip is inserted into an air gap of the iron core, the top of the other side surface of the circuit board is provided with a calibration socket, external equipment realizes the calibration of the current detection chip through the calibration socket, and the bottom of the side surface is provided with a first socket, a second socket and a third socket which are arranged side by side; the circuit board is provided with a power supply conversion circuit which is responsible for converting an external power supply into a power supply voltage value required by the current detection chip.
Further, the cross section of the perforated channel of the housing is square and round, i.e. a combination of round and rectangular: the rectangle merges at the middle of the circle.
Further, the wire harness with the matched terminal is directly inserted into the first socket, the second socket or the third socket, so that quick wiring is realized.
Further, the iron core is clamped outside the perforation channel, and corresponding buckles and iron core clamping are arranged inside the shell.
Compared with the prior art, the utility model provides a current measuring device for a direct-current column head cabinet, which has the following beneficial effects:
(1) The center of the utility model adopts a square and round hole design, and the cable and the copper bar are compatible in perforation.
(2) The utility model adopts a single power supply to supply power, the reference voltage of signal output is a fixed value, the output signal is based on the fixed value, and the output signal corresponds to the positive and negative current measuring range through a proper amplitude.
(3) The utility model adopts the programmable current detection chip, does not need manual debugging, and realizes the debugging of the current sensor through automatic equipment.
(4) The utility model adopts three sockets, does not need to twist wires, and realizes quick wiring by directly accessing the sockets through the wire harness with the terminals.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic diagram of the electrical connection of the present utility model.
Fig. 3 is a block diagram of the circuitry of the present utility model.
Wherein:
The device comprises a shell 1, a core 2, a current detection chip 3, a calibration socket 4, a circuit board 5, a first socket 6, a second socket 7 and a third socket 8.
Description of the embodiments
In order to better understand the technical solution of the present utility model, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present utility model, but are merely examples of embodiments that may be employed by the present utility model. It should be noted that, the description herein of the positional relationship of the components, such as the component a being located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Examples
Referring to fig. 1-3, fig. 1 depicts a schematic circuit diagram of a current measuring device for a dc column header cabinet. As shown in the figure, the current measuring device for the direct-current column head cabinet comprises a shell 1, an iron core 2, a current detection chip 3 and a circuit board 5, wherein the iron core 2 and the circuit board 5 are sequentially arranged in the shell 1; the center of the shell 1 is provided with a perforation channel, and the cross section of the perforation channel is square and round, namely, the combination of round and rectangle: the rectangle merges at the middle of the circle.
The iron core 2 is clamped outside the perforation channel, and a corresponding clamp is arranged inside the shell 1 and is clamped with the iron core 2; the circuit board 5 is close to a side top of iron core 2 and is equipped with electric current detection chip 3, electric current detection chip 3 inserts in the air gap of iron core 2, another side top of circuit board 5 is equipped with calibration socket 4, and the bottom is equipped with first socket 6, second socket 7 and third socket 8 side by side.
Glue is poured into the shell 1 to fix all devices, and the assembly of the current measuring device is completed.
The circuit board 5 is provided with a power supply conversion circuit which is responsible for converting an external power supply into a power supply voltage value required by the current detection chip 2; referring to fig. 3, the primary side current is transmitted to the current detection chip through magnetic field induction of the magnetic core, and a set signal is output after calibration by an external device.
The zero output voltage value of the current detection chip 2 is a fixed value, the output signal takes the fixed value as a reference, and the external equipment realizes the calibration of the current detection chip 2 through the calibration socket 4, and realizes the setting of an accurate amplitude value to correspond to a positive current range and a negative current range.
The wire harness with the matched terminals can be directly inserted into the first socket 6, the second socket 7 or the third socket 8, so that quick wiring is realized; the second socket 7 enables signal connection and the first socket 6 and the third socket 8 enable cascading of power supplies between the current measuring devices.
The foregoing is merely a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the utility model.
Claims (3)
1. A current measurement device for direct current list first cabinet, its characterized in that: the device comprises a shell (1), an iron core (2), a current detection chip (3) and a circuit board (5), wherein the iron core (2) and the circuit board (5) are sequentially arranged in the shell (1); the center of the shell (1) is provided with a perforation channel; the circuit board (5) is provided with a current detection chip (3) close to the top of one side surface of the iron core (2), the current detection chip (3) is inserted into an air gap of the iron core (2), the top of the other side surface of the circuit board (5) is provided with a calibration socket (4), external equipment realizes the calibration of the current detection chip (3) through the calibration socket (4), and the bottom of the side surface is provided with a first socket (6), a second socket (7) and a third socket (8) which are arranged side by side; the circuit board (5) is provided with a power supply conversion circuit which is responsible for converting an external power supply into a power supply voltage value required by the current detection chip (3);
The cross section of the perforation channel of the shell (1) is square and round, namely, the combination of round and rectangle: the rectangle merges at the middle of the circle.
2. A current measurement device for a dc link cabinet according to claim 1, wherein: the wire harness with the matched terminals is directly inserted into the first socket (6), the second socket (7) or the third socket (8), so that quick wiring is realized.
3. A current measurement device for a dc link cabinet according to claim 1, wherein: the iron core (2) is clamped outside the perforation channel, and a corresponding clamp buckle is arranged inside the shell (1) and is clamped with the iron core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322756876.6U CN221039217U (en) | 2023-10-16 | 2023-10-16 | Current measuring device for direct-current column cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322756876.6U CN221039217U (en) | 2023-10-16 | 2023-10-16 | Current measuring device for direct-current column cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221039217U true CN221039217U (en) | 2024-05-28 |
Family
ID=91179734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322756876.6U Active CN221039217U (en) | 2023-10-16 | 2023-10-16 | Current measuring device for direct-current column cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221039217U (en) |
-
2023
- 2023-10-16 CN CN202322756876.6U patent/CN221039217U/en active Active
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