CN201789276U - Protective circuit of rectifying and charging equipment - Google Patents
Protective circuit of rectifying and charging equipment Download PDFInfo
- Publication number
- CN201789276U CN201789276U CN2010205228045U CN201020522804U CN201789276U CN 201789276 U CN201789276 U CN 201789276U CN 2010205228045 U CN2010205228045 U CN 2010205228045U CN 201020522804 U CN201020522804 U CN 201020522804U CN 201789276 U CN201789276 U CN 201789276U
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- rectifier
- filtering capacitor
- storage battery
- charging equipment
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a protective circuit of rectifying and charging equipment, which comprises a rectifier, a filter capacitor, an accumulator, a polar protective element, a countercurrent preventing device and an overvoltage monitoring device, wherein the rectifier receives the electric power of an external power supply and outputs rectified voltage at an output side for supplying power, the filter capacitor is connected with the output side of the rectifier, the accumulator is connected with the output side of the rectifier, and the accumulator and the filter capacitor are arranged in parallel for output; the polar protective element is connected with one side of the filter capacitor, can provide a bypass effect to the accumulator with reverse polar connection and prevents the filter capacitor from being charged in a negative direction by the accumulator; the countercurrent preventing device is arranged between the filter capacitor and the accumulator in series, can isolate the filter capacitor and the accumulator when the filter capacitor has a fault and is abnormal, and avoids the generation of an accident of short circuit; and the overvoltage monitoring device can monitor the voltage of the output side of the rectifier, controls a switching-off switch on the external power supply and a switching-off switch at the output side of the rectifier to form a non-conducting state when the monitored voltage is too high and can damage peripheral equipment and the accumulator, and converts the power utilization of a load into the supply of the accumulator.
Description
Technical field
The utility model relates to a kind of rectification charging equipment protection circuit, relates in particular to a kind of in order to the filtering capacitor of protection rectification charging equipment and the circuit of storage battery.
Background technology
The problem of a power supply quality that does not cut off the power supply can't be provided to provide at electric power system, at present the user common practice for example important emergency power electricity consumption such as factory's electric switch dish, communications equipment room, petrochemical industry or nuclear energy, high-tech technology be provided with standby battery pack support power supply, after yet the user has usually takeed for and additionally battery pack has been set, load no longer exists the anxiety of outage and considers, but exposed another potential problem through unusual case for many years, promptly the running reliability of power supply unit itself and artificial misoperation are often out in the cold.
Please refer to shown in Figure 1, the rectification charging equipment 1 of existing common UPS, power semiconductor switch or drive circuit in rectifying installation 11 are out of control, make that rectifying installation 11 output voltages are too high unusually, probably can be damaged to battery 12 and load 13 side apparatus, cause shutdown, telex network network to decommission, the maintenance cost that empty increment is outer and jeopardize the safety of electricity consumption own as production line; Leakage fault and insulation degradation if take place in capacitor 14 in system's running; there is not the device of isolating battery 12 electric power adverse currents again; to make electric power cause short circuit accident toward capacitor 14 adverse currents; make load 13 sides that the anxiety of power failure be arranged; and be provided with and the construction of battery 12 distributions at new battery 12; often, human factor causes the damage of capacitor 14 because of causing battery 12 and capacitor 14 error-polarity connections; shortage is to the safeguard measure of improving of battery 12 and capacitor 14; the inner many equipment damages of UPS are brought about great losses, also injure the power consumption equipment of load 13 sides output.
The utility model content
The utility model rectification charging equipment protection circuit for overcoming existing rectification charging system does not have the protection improved to filtering capacitor and storage battery circuit, causes the problem of filtering capacitor and storage battery damage easily.
It is as follows that the utility model solves the problems of the technologies described above the technical scheme of being taked:
Overvoltage supervising device at the voltage that the outlet side with monitoring rectifier is provided, ancillary equipment monitoring overtension can be damaged to the time, the cut-off switch on the described overvoltage supervising device may command external power source and the cut-off switch of rectifier outlet side form not on-state, allow the load electricity consumption change by the storage battery supply, avoid the injury of overvoltage to storage battery and load power consumption equipment, cut-off switch is isolated superpotential effect as long as one of them not conducting can reach; One polarity protection element is connected in a side of filtering capacitor, can avoid human negligence mistake that storage battery and filtering capacitor error-polarity connection are damaged to filtering capacitor, described polarity protection element can provide bypass effect of storage battery of error-polarity connection, prevents that filtering capacitor is by the reverse charging of storage battery; The series connection of one anti-backflow device is located between filtering capacitor and the storage battery; can be composed in parallel by a plurality of diodes avoids the single failure open circuit to cause the output loading outage; when described anti-backflow device can protect rectifier not start shooting under the filtering capacitor no-voltage condition; avoid storage battery misdelivery electricity that filtering capacitor is caused short circuit accident; and insulation degradation or leakage if take place in filtering capacitor in the running; also can isolate storage battery and reflux, allow the load electricity consumption not cut off the power supply and have the function of protection storage battery concurrently toward filtering capacitor.
Above-mentioned the utility model all is for the stability of rectification charging equipment and the safety of electricity consumption own; and the mechanism of protection storage battery and filtering capacitor; can reduce the damage that rectification charging equipment fault and human negligence are caused, and improve the power supply reliability of rectification charging equipment.
By above-mentioned explanation, the utlity model has following beneficial effect:
1. can be the effectively pre-anti-overvoltage of overvoltage supervising device is to the damage of load ancillary equipment and storage battery, and the fail safe of storage battery and rectification charging equipment is promoted greatly.
2. the polarity protection element of filtering capacitor can be avoided artificial careless mistake, causes the damage of storage battery to filtering capacitor.
3. anti-backflow device can prevent storage battery when rectification circuit is not started shooting, and discharge causes short circuit accident to storage battery to filtering capacitor, and filtering capacitor has the deterioration or the phenomenon of leakage in the running, and isolation filter capacitor and storage battery are avoided the generation of short circuit accident.
Description of drawings
Fig. 1 is the rectification charging equipment structure chart of existing UPS;
Fig. 2 is the utility model rectification charging equipment protection circuit structure diagram;
Fig. 3 is the utility model rectification charging equipment protection circuit figure.
Embodiment
Please refer to shown in Figure 2ly, the utility model rectification charging equipment protection circuit comprises a rectifier 2, a filtering capacitor 3, a storage battery 4, a polarity protection element 5, an anti-backflow device 6 and an overvoltage supervising device 7, wherein:
Please refer to shown in Figure 3ly, a rectifier 2 is accepted the electric power of an external power source 9, and in outlet side 21 output commutating voltages power supplies.
One filtering capacitor 3 is connected in the outlet side 21 of rectifier 2, is that the filtering charging is used.
One storage battery 4 is connected in rectifier 2 outlet sides 21, at the outgoing position of filtering capacitor 3, is with filtering capacitor 3 and is arranged in parallel output.
One polarity protection element 5 is connected in a side of filtering capacitor 3, and described polarity protection element 5 can be diode.
The series connection of one anti-backflow device 6 is located between filtering capacitor 3 and the storage battery 4, and anti-backflow device 6 can be composed in parallel or a plurality of unidirectional conducting thyratron composes in parallel by a plurality of diodes, can avoid the single failure open circuit to cause output loading 8 to cut off the power supply.
One overvoltage supervising device 7 is connected in the voltage of the outlet side 21 monitoring outlet sides 21 of rectifier 2, is located at cut-off switch 71 on the external power source 9 with control, and the cut-off switch 71 of 4 on rectifier 2 and storage battery.
Please refer to Fig. 2 and shown in Figure 3, the utility model operation workflow is accepted external power source 9 by rectifier 2 and is carried out rectification, and supply commutating voltages by the outlet side 21 of rectifier 2, and store electric power in storage battery 4 via filtering capacitor 3, and offered load 8 electricity consumptions.Yet, rectifier 2 may be unusual because of the overtension of control fails generation outlet side 21 own, be damaged to the power consumption equipment of storage battery 4 and load 8, the overtension of described overvoltage supervising device 7 monitoring outlet sides 21, the cut-off switch 71 of promptly controlling cut-off switch 71 and outlet side 21 on the external power source 9 forms not on-states, allow load 8 electricity consumptions change by storage battery 4 supplies, avoid overvoltage to the injury of storage battery 4 with load 8 power consumption equipments, above-mentioned cut-off switch 71 is isolated superpotential effect as long as one of them not conducting can reach.Polarity protection element 5 of the present utility model, can avoid the human negligence mistake that storage battery 4 is damaged to filtering capacitor 3 with filtering capacitor 3 error-polarity connections, polarity protection element 5 can provide 4 one bypass effects of storage battery of error-polarity connection, prevent that filtering capacitor 3 from by storage battery 4 reverse chargings, being a kind of protection mechanism to filtering capacitor 3; Filtering capacitor 3 in the running is accident if generation insulation degradation or leakage meeting are short-circuited, make fuse 91 fusing of the fuse 41 and the external power source 9 of protection storage battery 4, cause load 8 outages also to be damaged to storage battery 4, yet the utility model is located at the anti-backflow device 6 between filtering capacitor 3 and the storage battery 4, can isolate storage battery 4 and reflux, allow load 8 electricity consumptions not cut off the power supply and have the effect of protection storage battery 4 concurrently toward filtering capacitors 3; When rectifier 2 of the present utility model was not started shooting, filtering capacitor 3 was under the no-voltage condition, and anti-backflow device 6 can prevent that 4 pairs of filtering capacitors of storage battery, 3 misdelivery electricity from causing short circuit accident, can avoid fuse 41 fusing of storage battery 4 and the damage of storage battery 4.
Polarity protection element 5 in sum, anti-backflow device 6 and overvoltage supervising device 7; all be power supply stability and protection storage battery 4 and filtering capacitor 3 for rectification charging equipment; can reduce rectification charging equipment because of the equipment damage that human negligence caused, and improve rectification charging power devices reliability.
Claims (12)
1. rectification charging equipment protection circuit comprises: a rectifier (2), accept the electric power of an external power source (9), and in outlet side (21) output commutating voltage; One filtering capacitor (3) is connected in the outlet side (21) of rectifier (2); One storage battery (4), be connected in rectifier (2) outlet side (21), outgoing position in filtering capacitor (3) is with filtering capacitor (3) and is arranged in parallel, and it is characterized in that: comprise that also one is connected in the polarity protection element (5) of a side of filtering capacitor (3); One anti-backflow device (6), series connection is located between filtering capacitor (3) and the storage battery (4); An and overvoltage supervising device (7), be connected in the voltage of the outlet side (21) of rectifier (2) with monitoring outlet side (21), be located at cut-off switch (71) on the external power source (9) with control, and the cut-off switch (71) between rectifier (2) and storage battery (4).
2. rectification charging equipment protection circuit according to claim 1 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of diodes.
3. rectification charging equipment protection circuit according to claim 1 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of unidirectional conducting thyratrons.
4. rectification charging equipment protection circuit comprises: a rectifier (2), accept the electric power of an external power source (9), and in outlet side (21) output commutating voltage; One filtering capacitor (3) is connected in the outlet side (21) of rectifier (2); One storage battery (4), be connected in rectifier (2) outlet side (21), the outgoing position in filtering capacitor (3) is with filtering capacitor (3) and is arranged in parallel, it is characterized in that: also comprise an anti-backflow device (6), series connection is located between filtering capacitor (3) and the storage battery (4); An and overvoltage supervising device (7), be connected in the voltage of the outlet side (21) of rectifier (2) with monitoring outlet side (21), be located at cut-off switch (71) on the external power source (9) with control, and the cut-off switch (71) between rectifier (2) and storage battery (4).
5. rectification charging equipment protection circuit according to claim 4 is characterized in that: a side of described filtering capacitor (3) also is connected with a polarity protection element (5), can prevent that filtering capacitor (3) is because of the reverse charging of storage battery (4) error-polarity connection.
6. rectification charging equipment protection circuit according to claim 4 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of diodes.
7. rectification charging equipment protection circuit according to claim 4 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of unidirectional conducting thyratrons.
8. rectification charging equipment protection circuit comprises: a rectifier (2), accept the electric power of an external power source (9), and in outlet side (21) output commutating voltage; One filtering capacitor (3) is connected in the outlet side (21) of rectifier (2); One storage battery (4), be connected in rectifier (2) outlet side (21), outgoing position in filtering capacitor (3), be with filtering capacitor (3) and be arranged in parallel, it is characterized in that: also comprise an overvoltage supervising device (7), the outlet side (21) that is connected in rectifier (2) is with the voltage of monitoring outlet side (21), is located at cut-off switch (71) on the external power source (9) and the cut-off switch (71) between rectifier (2) and storage battery (4) with control.
9. rectification charging equipment protection circuit according to claim 8 is characterized in that: a side of described filtering capacitor (3) also is connected with a polarity protection element (5), can prevent that filtering capacitor (3) is because of the reverse charging of storage battery (4) error-polarity connection.
10. rectification charging equipment protection circuit according to claim 8 is characterized in that: also be in series with an anti-backflow device (6) between described filtering capacitor (3) and the storage battery (4).
11. rectification charging equipment protection circuit according to claim 10 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of diodes.
12. rectification charging equipment protection circuit according to claim 10 is characterized in that: described anti-backflow device (6) composes in parallel for a plurality of unidirectional conducting thyratrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205228045U CN201789276U (en) | 2010-09-09 | 2010-09-09 | Protective circuit of rectifying and charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205228045U CN201789276U (en) | 2010-09-09 | 2010-09-09 | Protective circuit of rectifying and charging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789276U true CN201789276U (en) | 2011-04-06 |
Family
ID=43821226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205228045U Expired - Fee Related CN201789276U (en) | 2010-09-09 | 2010-09-09 | Protective circuit of rectifying and charging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201789276U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664389A (en) * | 2012-05-11 | 2012-09-12 | 济南轻骑摩托车有限公司 | Stabilizing rectifier with fault indicator |
| CN102983619A (en) * | 2011-09-07 | 2013-03-20 | 台达电子工业股份有限公司 | Uninterruptible power device and power supply method thereof |
| CN105552877A (en) * | 2016-02-01 | 2016-05-04 | 凯迈(洛阳)电子有限公司 | Reverse connection monitoring device of power storage battery |
| CN107947335A (en) * | 2017-11-22 | 2018-04-20 | 郑州云海信息技术有限公司 | A kind of printed circuit board (PCB) and its low current two-supply circuit |
| CN112510672A (en) * | 2020-12-02 | 2021-03-16 | 欣旺达电动汽车电池有限公司 | Reverse connection prevention follow current protection circuit and terminal |
-
2010
- 2010-09-09 CN CN2010205228045U patent/CN201789276U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983619A (en) * | 2011-09-07 | 2013-03-20 | 台达电子工业股份有限公司 | Uninterruptible power device and power supply method thereof |
| CN102664389A (en) * | 2012-05-11 | 2012-09-12 | 济南轻骑摩托车有限公司 | Stabilizing rectifier with fault indicator |
| CN105552877A (en) * | 2016-02-01 | 2016-05-04 | 凯迈(洛阳)电子有限公司 | Reverse connection monitoring device of power storage battery |
| CN107947335A (en) * | 2017-11-22 | 2018-04-20 | 郑州云海信息技术有限公司 | A kind of printed circuit board (PCB) and its low current two-supply circuit |
| CN112510672A (en) * | 2020-12-02 | 2021-03-16 | 欣旺达电动汽车电池有限公司 | Reverse connection prevention follow current protection circuit and terminal |
| CN112510672B (en) * | 2020-12-02 | 2023-01-13 | 欣旺达电动汽车电池有限公司 | Reverse connection prevention follow current protection circuit and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130909 |