CN205301548U - Portable direct current electronic load device - Google Patents
Portable direct current electronic load device Download PDFInfo
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- CN205301548U CN205301548U CN201521141174.6U CN201521141174U CN205301548U CN 205301548 U CN205301548 U CN 205301548U CN 201521141174 U CN201521141174 U CN 201521141174U CN 205301548 U CN205301548 U CN 205301548U
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- lithium battery
- load device
- sampling
- master controller
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Abstract
The utility model discloses a portable direct current electronic load device, including main control unit, display module, DA conversion module, adjusting module, load MOS, sampling resistor, AD sampling module, lithium cell A, lithium cell B, switching module and voltage monitoring module, main control unit, DA conversion module, adjusting module and load MOS are consecutive, sampling resistor, AD sampling module and main control unit are consecutive, load MOS and sampling resistor link to each other, lithium cell A and lithium cell B link to each other with the switching module, it is consecutive to switch module, voltage monitoring module and main control unit, it still links to each other with main control unit to switch the module. This portable direct current electronic load device possesses the constant current of direct current electronic load device, constant voltage, constant -resistance, permanent power function, has still increased two lithium cells and relevant exchange formula charging circuit to in incorporating charging circuit into load circuit, unified closed -cycle control.
Description
Technical field
This utility model relates to electronic load technical field, is specially a kind of Portable DC electronic load device.
Background technology
Existing DC electronic load device all adopts electric main to power, it has not been convenient to mobile use, even if there being the DC electronic load device that can move use to be also required to frequent charge. This utility model have employed double; two lithium battery and replaces energy storage and power supply, and portable mobile uses; Simultaneously when tested electronic equipment (DC source, battery etc.) is drawn load, use the power supply that tested electronic equipment provides that the energy-storage lithium battery in this utility model is charged, and this charging circuit is brought in the closed loop adjustment of hardware. Working long hours down, if supplying cell electricity is about to use up, supplying cell will be exchanged automatically with energy-storage battery.
Utility model content
The purpose of this utility model is in that for above-mentioned the deficiencies in the prior art, it is provided that a kind of Portable DC electronic load device. This utility model have employed double; two lithium battery and replaces energy storage and power supply, and portable mobile uses; Simultaneously when tested electronic equipment (DC source, battery etc.) is drawn load, use the power supply that tested electronic equipment provides that the energy-storage lithium battery in this utility model is charged, and this charging circuit is brought in the closed loop adjustment of hardware. Working long hours down, if supplying cell electricity is about to use up, supplying cell will be exchanged automatically with energy-storage battery.
The technical solution of the utility model is achieved in that a kind of Portable DC electronic load device, including master controller, display module, D/A modular converter, adjustment module, load MOS, sampling resistor, A/D sampling module, lithium battery A, lithium battery B, handover module and voltage monitoring module, described master controller, D/A modular converter, adjustment module and load MOS are sequentially connected, described sampling resistor, A/D sampling module and master controller are sequentially connected, described load MOS is connected with sampling resistor, described lithium battery A is connected with handover module with lithium battery B, described handover module, voltage monitoring module and master controller are sequentially connected, described handover module is also connected with master controller.
Preferably, described load MOS is connected with tested electronic equipment with sampling resistor.
Preferably, described lithium battery A and lithium battery B is switched in turn to master controller, display module, D/A modular converter, adjustment module, A/D sampling module, handover module and voltage monitoring module for power supply by handover module.
Preferably, described handover module, from tested electronic equipment power taking, gives the lithium battery A not powered or lithium battery B charging.
Compared with prior art, the beneficial effects of the utility model are: this Portable DC electronic load device possesses DC electronic load device constant current, constant voltage, constant-resistance, invariable power function, also add double; two lithium battery and related exchange formula charging circuit, and charging circuit is incorporated in load circuit, unified closed loop regulates.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but is not intended that any restriction of the present utility model.
Fig. 1 is this utility model structural representation.
In figure: 1, master controller, 2, display module, 3, D/A modular converter, 4, adjustment module, 5, load MOS, 6, sampling resistor, 7, A/D sampling module, 8, lithium battery A, 9, lithium battery B, 10, handover module, 11, voltage monitoring module, 12, tested electronic equipment.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail:
Refer to Fig. 1, this utility model provides a kind of technical scheme: a kind of Portable DC electronic load device, including master controller 1, display module 2, D/A modular converter 3, adjustment module 4, load MOS5, sampling resistor 6, A/D sampling module 7, lithium battery A8, lithium battery B9, handover module 10 and voltage monitoring module 11, master controller 1, D/A modular converter 3, adjustment module 4 and negative MOS5 are sequentially connected, sampling resistor 6, A/D sampling module 7 and master controller 1 are sequentially connected, load MOS5 is connected with sampling resistor 6, lithium battery A8 is connected with handover module 10 with lithium battery B9, handover module 10, voltage monitoring module 11 and master controller 1 are sequentially connected, handover module 10 is also connected with master controller 1. load MOS5 is connected with tested electronic equipment 12 with sampling resistor 6. lithium battery A8 and lithium battery B9 is switched by handover module 10 and powers to master controller 1, display module 2, D/A modular converter 3, adjustment module 4, A/D sampling module 7, handover module 10 and voltage monitoring module 11 in turn. handover module 10, from the power taking of tested electronic equipment 12, gives the lithium battery A8 not powered or lithium battery B9 charging.
The problem that the invention puts forth effort to solve is overlength continuation of the journey, two pieces of lithium batteries are had for this this circuit, one piece is in power supply state, one piece is in charging energy-storing state, longevity of service, being detected by voltage monitoring module 11 when the electric quantity of lithium battery of power supply is about to be finished, automatically being exchanged with the battery of charging energy-storing by handover module 10, going round and beginning again in this manner realizes super long standby time.
Embodiment provided above is better embodiment of the present utility model, only it is used for this utility model is conveniently described, not this utility model is done any pro forma restriction, any art has usually intellectual, if in the scope without departing from the carried technical characteristic of this utility model, this utility model disclosed technology content is utilized to be made the Equivalent embodiments that local is changed or modified, and without departing from technical characteristic content of the present utility model, all still fall within the scope of this utility model technical characteristic.
Claims (4)
1. a Portable DC electronic load device, including master controller (1), display module (2), D/A modular converter (3), adjustment module (4), load MOS (5), sampling resistor (6), A/D sampling module (7), lithium battery A (8), lithium battery B (9), handover module (10) and voltage monitoring module (11), it is characterised in that: described master controller (1), D/A modular converter (3), adjustment module (4) and negative MOS (5) are sequentially connected, described sampling resistor (6), A/D sampling module (7) and master controller (1) are sequentially connected, described load MOS (5) is connected with sampling resistor (6), described lithium battery A (8) is all connected with handover module (10) with lithium battery B (9), described handover module (10), voltage monitoring module (11) and master controller (1) are sequentially connected, and described handover module (10) is also connected with master controller (1).
2. a kind of Portable DC electronic load device according to claim 1, it is characterised in that: described load MOS (5) is all connected with tested electronic equipment (12) with sampling resistor (6).
3. a kind of Portable DC electronic load device according to claim 1, it is characterised in that: described lithium battery A (8) and lithium battery B (9) give master controller (1), display module (2), D/A modular converter (3), adjustment module (4), A/D sampling module (7), handover module (10) and voltage monitoring module (11) power supply in turn by handover module (10) switching.
4. a kind of Portable DC electronic load device according to claim 1, it is characterized in that: described handover module (10), from tested electronic equipment (12) power taking, gives the lithium battery A (8) not powered or lithium battery B (9) charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141174.6U CN205301548U (en) | 2015-12-28 | 2015-12-28 | Portable direct current electronic load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141174.6U CN205301548U (en) | 2015-12-28 | 2015-12-28 | Portable direct current electronic load device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301548U true CN205301548U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521141174.6U Active CN205301548U (en) | 2015-12-28 | 2015-12-28 | Portable direct current electronic load device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205301548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526275A (en) * | 2020-12-21 | 2021-03-19 | 中认英泰检测技术有限公司 | Self-adaptive electrical parameter testing system and method for quality safety monitoring |
-
2015
- 2015-12-28 CN CN201521141174.6U patent/CN205301548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526275A (en) * | 2020-12-21 | 2021-03-19 | 中认英泰检测技术有限公司 | Self-adaptive electrical parameter testing system and method for quality safety monitoring |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |