CN204065371U - A kind of frequency converter Battery Discharging Device - Google Patents
A kind of frequency converter Battery Discharging Device Download PDFInfo
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- CN204065371U CN204065371U CN201420505578.8U CN201420505578U CN204065371U CN 204065371 U CN204065371 U CN 204065371U CN 201420505578 U CN201420505578 U CN 201420505578U CN 204065371 U CN204065371 U CN 204065371U
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Abstract
The utility model provides a kind of frequency converter Battery Discharging Device, comprises switch S 1 (2), fixed resistance (3), adjustable resistance (4), rectifier (10), voltage table (7) and DC ammeter (12), is characterized in that, also comprise n voltage stabilizer (5), comparer (9), relay (8) and m discharge resistance (6), wherein, n >=1, m >=1.The utility model adopts circuit component design and assembly, controls electric current, thus realize the constant-current discharge function to accumulator according to voltage stabilizer and discharge resistance.Regularly discharge and recharge test is carried out to accumulator, thus reach prolonging service life of battery effect, ensure the reliability of ups power.
Description
Technical field
The utility model relates to battery discharging process safety Controlling Technology, refers to that a kind of frequency converter UPS accumulator property is reliable especially, the device of life.
Background technology
Current high voltage converter generally uses UPS (uninterrupted power source) as controlling power supply, when external power source loses, by the inversion of UPS internal battery for frequency converter provides control power supply, because high voltage converter UPS accumulator is in floating charge state for a long time, accumulator may damage or depleted of energy because of long-term floating charge.When external power source fault needs the inversion of UPS accumulator to power, UPS can not power in time and causes frequency converter power supply out of hand and stop transport.
Because UPS inside does not arrange and puts for all filling of accumulator, during UPS long-time running, capacity declines, and power plant once occurred repeatedly to cause that unit is non-stops accident because UPS cannot power in time.Regularly must carry out discharge and recharge test to accumulator, guarantee UPS power supply reliability, and then ensure the safe and stable operation of thermal power generation unit.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of frequency converter UPS Battery Discharging Device, to solve the problem that existing accumulator regularly can not carry out discharge and recharge test, to activate accumulator electric energy storage capacity, guarantees that ups power power-on time reaches requirement.
For solving the problems of the technologies described above, the utility model provides a kind of frequency converter UPS Battery Discharging Device, and concrete scheme is as follows:
A kind of frequency converter Battery Discharging Device, is connected on accumulator, comprises switch S 1, fixed resistance, adjustable resistance, rectifier, voltage table and DC ammeter, also comprise n voltage stabilizer, comparer, relay and m discharge resistance, wherein, and n >=1, m >=1.
The input end of described voltage stabilizer is connected to the positive pole of accumulator after connecting with switch S 1, accumulator two ends are connected in parallel on again after being connected with adjustable resistance by fixed resistance, adjustable resistance voltage is introduced the reverse input end of comparer, the output cathode of rectifier is introduced the positive input of comparer, the positive pole of accumulator is introduced the power end of comparer, the normally opened contact of relay is connected in parallel on switch S 1 two ends, voltage table is connected in parallel on the two ends of accumulator, the b terminal of switch S 1 will be connected to again after the output terminal of comparer and the coils connected in series of relay, the output terminal of voltage stabilizer is connected to the negative pole of accumulator after connecting with discharge resistance and DC ammeter.
Further, a described n voltage stabilizer is for being connected in parallel.
Further, each described voltage stabilizer is contacted 1 described discharge resistance.
The beneficial effect of technique scheme of the present utility model is as follows:
1, regularly can carry out discharge and recharge test to UPS accumulator in high voltage converter, activation accumulator, extends the serviceable life of accumulator.Whether the capacity 2, can checking accumulator conforms to nominal capacity, can provide foundation for changing accumulator.3, effectively reduce the failure rate of high voltage converter UPS, ensure high voltage converter reliability service, especially significant to the stable operation of generating plant unit.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 circuit theory diagrams;
Fig. 2 is the utility model embodiment 2 circuit theory diagrams.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Table 1
Table 1 is each element and model thereof used in embodiment.
The utility model utilizes voltage stabilizer 5, comparer 9, relay 8 to form a constant voltage circuit, then require to configure discharge resistance 6 (cement resistor) according to the discharge current of accumulator.
Embodiment 1:
As shown in Figure 1, require that 24V accumulator 1 final discharging voltage is 21.6V according to GB DT/T724-2000, discharge current is I
10, according to this example accumulator (7Ah) model, discharge current controls at 0.7A.Now select rectifier 10 output voltage 9V as comparer 9 forward input voltage.Calculate the ratio (R1 gets 1.5k, and R2 gets 1k) of R1 and R2, when accumulator 1 terminal voltage drops to 21.6V, R2 terminal voltage is just lower than 9V, and namely reverse input voltage is lower than+9V.When pressing S1 switch, voltage stabilizer 5 exports+15V voltage (accumulator voltage is 24V), now, the voltage (9.6V) of comparer 9 reverse input end is higher than positive input voltage (9V), comparer 9 output low level, relay 8 obtains electric adhesive, and its normally opened contact closes, discharge loop conducting.Due to the constant+15V of voltage stabilizer 5 output voltage (because manufacturer's difference may have deviation), can by the size of reasonable disposition cement resistor R3 (this example R3 is 21.3 Ω), the discharge current of accumulator is controlled at 0.7A.Along with continuing of discharge process, accumulator 1 terminal voltage declines, and when being down to 21.6V, comparer 9 reverse input end voltage is lower than positive input voltage, and comparer exports high level, relay electric-loss, and normal battle is opened, discharge off.Can accumulator capacity be calculated by accumulator 1 capacity (Ah)=discharge current (A) × discharge time (h), regularly like this discharge and recharge test is carried out to accumulator can activate accumulator, extend life-span of accumulator.
The resistance of R1, R2 can be scaled up, make to flow through R1, R2 electric current less, in order to avoid the capacity of accumulator is checked in impact.
Embodiment 2:
As shown in Figure 2, according to the requirement of different model battery discharging electric current, 2 voltage stabilizers 5 can be adopted in parallel if do not reach requirement, two discharge resistances 6 are in parallel, and use adjustable resistance 4 pairs of discharge currents to carry out accurate adjustment.
Press S1 switch, voltage stabilizer 5 (MC7815) exports+15V voltage, and now comparer 9 (LM339) reverse input end current potential is higher than positive input, LM 339 output low level, 24V relay obtains electric adhesive, and its normally opened contact closes, discharge loop conducting.Due to the constant+15V of MC7815 output voltage, can, by the size of reasonable disposition discharge resistance, use 2 MC7815 parallel connections, discharge current be made to meet the requirement of battery discharging electric current.Along with continuing of discharge process, accumulator voltage declines, (require that 24V battery discharging final voltage is 21.6V according to GB DT/T724-2000) when being down to 21.6V, LM339 reverse input end current potential is lower than positive input, LM339 exports high level, 24V relay electric-loss, normal battle is opened, discharge off.Place's accumulator capacity can be calculated by accumulator capacity (Ah)=discharge current (A) × discharge time (h), regularly like this can activate accumulator to accumulator cell charging and discharging, extend the life-span of accumulator.
The output voltage of the rectifier 10 selected here is 9V, i.e. reference voltage, and the final discharging voltage of known 24V accumulator is 21.6V again, and now R2 both end voltage should reduce to 9V.Known R1/R2=(21.6-9)/9=7/5, can choose R1, R2 size according to this ratio relation, and making to flow through R1, R2 electric current is milliampere level, in order to avoid the capacity of accumulator is checked in impact.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a frequency converter Battery Discharging Device, be connected on accumulator (1), comprise switch S 1 (2), fixed resistance (3), adjustable resistance (4), rectifier (10), voltage table (7) and DC ammeter (12), it is characterized in that, also comprise n voltage stabilizer (5), comparer (9), relay (8) and m discharge resistance (6), wherein, n >=1, m >=1;
The input end of described voltage stabilizer (5) is connected to the positive pole of accumulator (1) after connecting with switch S 1 (2), accumulator (1) two ends are connected in parallel on again after being connected with adjustable resistance (4) by fixed resistance (3), adjustable resistance (4) voltage is introduced the reverse input end of comparer (9), the output cathode of rectifier (10) is introduced the positive input of comparer (9), the positive pole of accumulator (1) is introduced the power end of comparer (9), the normally opened contact of relay (8) is connected in parallel on switch S 1 (2) two ends, voltage table (7) is connected in parallel on the two ends of accumulator (1), the b terminal of switch S 1 (2) will be connected to again after the coils connected in series of the output terminal of comparer (9) and relay (8), the output terminal of voltage stabilizer (5) is connected to the negative pole of accumulator (1) after connecting with discharge resistance (6) and DC ammeter (12).
2. Battery Discharging Device according to claim 1, is characterized in that, a described n voltage stabilizer (5) is for being connected in parallel.
3. Battery Discharging Device according to claim 1, is characterized in that, each described voltage stabilizer (5) series winding 1 described discharge resistance (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505578.8U CN204065371U (en) | 2014-09-03 | 2014-09-03 | A kind of frequency converter Battery Discharging Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505578.8U CN204065371U (en) | 2014-09-03 | 2014-09-03 | A kind of frequency converter Battery Discharging Device |
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| Publication Number | Publication Date |
|---|---|
| CN204065371U true CN204065371U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505578.8U Expired - Fee Related CN204065371U (en) | 2014-09-03 | 2014-09-03 | A kind of frequency converter Battery Discharging Device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608204A (en) * | 2015-10-26 | 2017-05-03 | 珠海优特电力科技股份有限公司 | Discharging device |
-
2014
- 2014-09-03 CN CN201420505578.8U patent/CN204065371U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608204A (en) * | 2015-10-26 | 2017-05-03 | 珠海优特电力科技股份有限公司 | Discharging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150903 |
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| EXPY | Termination of patent right or utility model |