CN212258398U - Low-voltage protection device of direct current converter - Google Patents
Low-voltage protection device of direct current converter Download PDFInfo
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- CN212258398U CN212258398U CN202021115314.3U CN202021115314U CN212258398U CN 212258398 U CN212258398 U CN 212258398U CN 202021115314 U CN202021115314 U CN 202021115314U CN 212258398 U CN212258398 U CN 212258398U
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Abstract
The utility model discloses a low-voltage protection device of a direct current converter; the direct current power supply protection device comprises an input direct current power supply, wherein a direct current filter device is electrically connected to the input direct current power supply, a direct current converter is electrically connected to the direct current filter device, one end of the direct current converter is electrically connected with a direct current voltage stabilizing device, one end of the direct current voltage stabilizing device is electrically connected with an output direct current power supply, and the direct current filter device, the direct current converter and the direct current voltage stabilizing device are electrically connected with a protection device; the utility model discloses filter the electric current earlier for direct current circuit can be stable when carrying out the conversion, is equipped with voltage stabilizing module at the output, makes the voltage after the conversion can maintain at fixed voltage range, and is equipped with autonomic protection module and output protection module in protection device, realizes detecting protection and follow-up output circuit and detects the protection to direct current converter.
Description
Technical Field
The utility model belongs to the technical field of the converter, concretely relates to low pressure protection device of direct current converter.
Background
The DC-DC converter, also called DC-DC converter or DC transformer, is a circuit for converting electric energy or an electromechanical device, and can convert a DC power into DC power with different voltages. The power range can be from very small to very large. Some dc-dc converters have the same reference point for the output voltage and the input voltage, and some dc-dc converters have the output voltage isolated from the input voltage, however, various problems still exist in the various dc converters on the market.
For example, the publication No. CN201720024005.7 discloses a low-voltage dc power output short-circuit protection device, which is simple, practical and easy to popularize, but does not solve the problems that the existing converter cannot protect the battery under low voltage condition when in use, cannot detect and protect the voltage at two ends of the converter, and has no structure for filtering and stabilizing voltage, and so on.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low pressure protection device of direct current converter to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the direct current protection device comprises an input direct current power supply, wherein a direct current filter device is electrically connected to the input direct current power supply, a direct current converter is electrically connected to the direct current filter device, one end of the direct current converter is electrically connected with a direct current voltage stabilizing device, one end of the direct current voltage stabilizing device is electrically connected with an output direct current power supply, a protection device is electrically connected to the direct current converter, a control module is arranged in the protection device, an autonomous protection module and an output protection module are electrically connected to the control module, pulse width modulation is electrically connected to each of the autonomous protection module, the control module and the output protection module, sound and light alarms are electrically connected to each of the autonomous protection module, a short circuit cut-off module, an input voltage sampling module, an over-temperature protection module and an overload protection module are arranged in the autonomous protection module, a voltage and current acquisition feedback module, an output, A DC fault module and a load cutoff module.
Preferably, the bottom of the dc converter is electrically connected to a ground line, and the ground line is electrically connected to the ground.
Preferably, the autonomous protection module is electrically connected to the dc filter device.
Preferably, the output protection module is electrically connected with the direct current voltage stabilizing device.
Preferably, the sound and light alarm comprises a buzzer and an alarm lamp.
Preferably, the voltage and current acquisition feedback module is electrically connected to the output direct-current power supply, and the voltage and current acquisition feedback module is electrically connected to the short circuit cutoff module.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses when carrying out the direct current circuit input, carry out the filtering to the electric current earlier for direct current circuit can be stable when carrying out the conversion, and be equipped with voltage stabilizing module at the output, can be so that the voltage after the conversion can maintain in fixed voltage range, can not cause too big voltage fluctuation, and be equipped with autonomic protection module and output protection module in protection device, realize detecting protection and follow-up output circuit to direct current converter and detect the protection.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention;
FIG. 2 is a schematic view of the protection device system of the present invention;
fig. 3 is a schematic diagram of the autonomous protection module system of the present invention;
fig. 4 is a schematic diagram of the output protection module system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a low voltage protection device for a dc converter, comprising: the direct current filtering device can filter direct current voltage and prevent clutter in the voltage from causing huge influence on voltage conversion; the direct current filter device is electrically connected with a direct current converter, and the direct current converter realizes the conversion of direct current voltage; one end of the direct current converter is electrically connected with a direct current voltage stabilizing device, one end of the direct current voltage stabilizing device is electrically connected with an output direct current power supply, and the direct current voltage stabilizing device is used for stabilizing the converted voltage so that the converted voltage can be stabilized in a proper range; the direct current converter is electrically connected with a protection device, and the protection device can protect the whole system circuit; the protection device is internally provided with a control module, the control module is electrically connected with an autonomous protection module and an output protection module, the autonomous protection module, the control module and the output protection module are all electrically connected with pulse width modulation, and the pulse width modulation at the position is used for adjusting the pulse width of the voltage so as to ensure that the voltage is stably output; the autonomous protection module, the control module and the output protection module are electrically connected with acousto-optic alarms, and the acousto-optic alarms at the positions are used for alarming faults; the automatic protection circuit is characterized in that the automatic protection module comprises a short circuit cut-off module, an input voltage sampling module, an over-temperature protection module and an overload protection module, the output protection module comprises a voltage and current acquisition feedback module, a direct current fault module and a load cut-off module, and the automatic protection module and the output protection module are used for detecting and protecting circuits.
In order to prevent the system from generating electric leakage and causing an electric shock event, in this embodiment, preferably, the bottom of the dc converter is electrically connected to a ground line, and the ground line is electrically connected to the ground.
In order to implement detection protection on the input dc voltage, in this embodiment, preferably, the autonomous protection module is electrically connected to the dc filter device.
In order to implement detection protection on the output dc voltage, in this embodiment, preferably, the output protection module is electrically connected to the dc voltage regulator.
In order to alarm the fault, in this embodiment, preferably, the sound and light alarm includes a buzzer and an alarm lamp.
In order to directly cut off the input power supply when the current at the output end is small, in this embodiment, preferably, the voltage and current collection feedback module is electrically connected to the output dc power supply, and the voltage and current collection feedback module is electrically connected to the short circuit cut-off module.
The utility model discloses a theory of operation and use flow: the direct current input power supply supplies power, the voltage is filtered through the direct current filter device, the medium noise waves of the circuit are filtered, the voltage is input into the direct current converter to be subjected to operations such as voltage reduction and boosting, then the voltage is output by the direct current voltage stabilizing device after being converted by the direct current converter, the direct current voltage stabilizing device can stabilize the voltage within a certain range, in addition, when the voltage is converted, the protection device can realize the detection of the voltage, the autonomous protection module can realize the detection and protection before the direct current voltage conversion, the short circuit cut-off module in the autonomous protection module is used for the disconnection of the circuit and plays a role in switch control, the over-temperature protection module can prevent the over-high temperature, the output protection module is used for detecting the output voltage, and the voltage and current sampling feedback module can detect the voltage and the current in the subsequent circuit, and then realize the disconnection to the power through short circuit cutting module when low pressure, realize low pressure protection control.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A low-voltage protection device of a direct current converter comprises an input direct current power supply, and is characterized in that: the direct current protection device comprises an input direct current power supply, a direct current filter device, a direct current converter, a direct current voltage stabilizing device, a protection device, a control module, an autonomous protection module and an output protection module, wherein the direct current filter device is electrically connected to the input direct current power supply, the direct current converter device is electrically connected to the direct current converter, one end of the direct current converter is electrically connected to the direct current voltage stabilizing device, the output direct current power supply is electrically connected to the direct current converter, the protection device is internally provided with the control module, the control module is electrically connected to the autonomous protection module and the output protection module, the autonomous protection module, the control module and the output protection module are electrically connected to the pulse width modulation, the acousto-optic alarm is electrically connected to the autonomous protection module, the autonomous protection module comprises a short circuit cut-off module, an input voltage sampling module, an over-temperature protection module and an overload, A DC fault module and a load cutoff module.
2. A low voltage protection device for a dc converter according to claim 1, wherein: the bottom of the direct current converter is electrically connected with a ground wire, and the ground wire is electrically connected with the ground.
3. A low voltage protection device for a dc converter according to claim 1, wherein: the autonomous protection module is electrically connected with the direct current filter device.
4. A low voltage protection device for a dc converter according to claim 1, wherein: the output protection module is electrically connected with the direct current voltage stabilizing device.
5. A low voltage protection device for a dc converter according to claim 1, wherein: the sound and light alarm comprises a buzzer and an alarm lamp.
6. A low voltage protection device for a dc converter according to claim 1, wherein: the voltage and current acquisition feedback module is electrically connected with the output direct-current power supply and the short circuit cut-off module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115314.3U CN212258398U (en) | 2020-06-16 | 2020-06-16 | Low-voltage protection device of direct current converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115314.3U CN212258398U (en) | 2020-06-16 | 2020-06-16 | Low-voltage protection device of direct current converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212258398U true CN212258398U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021115314.3U Active CN212258398U (en) | 2020-06-16 | 2020-06-16 | Low-voltage protection device of direct current converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212258398U (en) |
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2020
- 2020-06-16 CN CN202021115314.3U patent/CN212258398U/en active Active
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low voltage protection device for DC converter Effective date of registration: 20220329 Granted publication date: 20201229 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Binhu branch Pledgor: WUXI JUYI ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2022320000145 |