CN103199606A - -48V direct current single system double-power-source device and power output control method - Google Patents
-48V direct current single system double-power-source device and power output control method Download PDFInfo
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- CN103199606A CN103199606A CN201310114515XA CN201310114515A CN103199606A CN 103199606 A CN103199606 A CN 103199606A CN 201310114515X A CN201310114515X A CN 201310114515XA CN 201310114515 A CN201310114515 A CN 201310114515A CN 103199606 A CN103199606 A CN 103199606A
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Abstract
The invention provides a -48V direct current single system double-power-source device. The -48V direct current single system double-power-source device has the advantages that first, the -48V direct current single system double-power-source device has the same capacity of supplying electric power to communication equipment as a traditional communication power source. Double power sources in a single system can simultaneously supply electric power for loads and also can disconnect any way of power output, the -48V direct current single system double-power-source device can be used as a single system single power source power supply unit, the output capability of two rectifier screens is not limited and can completely support the loads of clients. Second, in the process of using the double power sources of the single system, the output currents of the double power sources are respectively detected and calculated, the output voltage of each way of power source is automatically adjusted through software according to the sizes of the output currents, the purposes of adjusting and outputting the voltage difference between ends of a diode are achieved, therefore current sharing between the two ways of power sources is achieved, after current sharing of the diode is achieved, the maximum current sharing error between the two ways of power sources can not be more than 10%, and the demand on balance of the load rate between systems can be well met.
Description
Technical field
The present invention relates to a kind of supply unit, especially for the communications field-48V direct current single system duplicate supply device and power supply output control method.
Background technology
The power supply system for communications is used for providing electric power safeguard to communication equipment, supplies power with double circuit or duplicate supply supplies power with double circuit in the pattern at the normal single supply that uses, and double loop power supply has two kinds of use patterns usually.A kind of pattern is the use that backups each other of two-way power supply: during the 1 road power supply operate as normal, the 2 the tunnel closes output.When the 1 the road breaks down, open the 2 road backup battery and start working.Generally can occur 2 kinds of situations in this pattern needs to consider: the one, when the 1 road power failure, switch in the 2 road power supply process, and because the 2 tunnel power-supply system does not have Hot Spare, communication equipment outage phenomenon can appear when the 2 road power initiation; The 2nd, because mutually redundant system all is separately to communication equipment power supply, so the configuration of the battery capacity of every suit power-supply system and module number all must satisfy communication equipment load size, and the utilance of battery and module is lower.
Another kind of pattern is the use of powering simultaneously of two-way power supply: the two-way power-supply system is powered to communication equipment simultaneously.Because the two-way power supply adopts monitoring unit separately to control respectively, even system's output parameter arranges unanimity, because circuit for detecting error, two-way power-supply system output voltage also is difficult to accomplish unanimity, this will cause the output current of two power-supply systems inconsistent, not current-sharing between the power-supply system, notable difference appears in load factor.And when the 1 road power supply output short-circuit fault, because two power-supply system outputs directly and connect use, also will cause the 2 road output protection, cause communication equipment input power interruptions.
Next is when adopting the double loop power supply system works, because monitoring unit is separate, the power-supply system parameter needs to revise simultaneously in the maintenance process, and the maintenance work step is many, makes mistakes easily.
Summary of the invention
The objective of the invention is provides a kind of duplicate supply output stable for the deficiency that solves above-mentioned technology, no potential safety hazard, and the reliability height is controlled easily-48V direct current single system duplicate supply device and power supply output control method.
In order to achieve the above object, the present invention is designed-48V direct current single system duplicate supply device, it is made of power supply, storage battery, single channel output and two-way output, it is characterized in that described power supply is divided into first power supply and second source, first power supply is in series with the first battery protection switch, the first battery fuse, first batteries successively; Second source is in series with the second battery protection switch, the second battery fuse, second batteries successively; After telling one tunnel connection, the first load fuse and output protection switch between first power supply and the first battery protection switch, form first via busbar; After telling one tunnel connection, the second load fuse and output protection switch between second source and the second battery protection switch, form the second road busbar; All directly be connected on the sharing control device at first power supply and second source, be provided with monitoring unit at the sharing control device; Between first power supply and second source, be provided with system's bus connection switch; First batteries is connected second batteries by the first battery fuse, battery bus connection switch and the second battery fuse.The core of this structure is to realize that by a monitoring unit overlapping the independently output of rectifier cubice power supply to two controls.
In order to adapt to power source loads, described first via busbar is connected with output protection switch and individual event diode in turn, and described the second road busbar is connected with output protection switch and individual event diode in turn, and the two-way circuit is merged into one the tunnel and formed single channel output then.Adopt unilateral diode as the isolation between the two negative rows of output and the current-sharing means of system.
In order to protect two group storage batteries, avoid the discharge of two group storage batteries unbalanced, described battery bus connection switch comprises that switching sky opens, and opens at the switching sky and is provided with electricity behaviour, electricity behaviour be connected with monitoring unit.By the switching of battery bus connection switch, control the contact between two group storage batteries.
The power supply output control method of the above-mentioned-48V direct current single system duplicate supply device of the present invention's design is the operation conditions of monitoring two groups of power supplys by monitoring power supply, by the output of two groups of power supplys of current-sharing respectively of sharing control device.The sharing control device carries out Regulation Control to the output voltage of two groups of power supplys respectively, the cycle of pressure regulation is 400ms, the precision of pressure regulation: the difference of demonstration voltage and target voltage≤± 0.1V, and the target voltage of two groups of power supplys is identical, shares float charge voltage and even charging voltage parameter.
When Alternating Current Power Supply normal, first batteries or the second batteries module fan-out capability are less than this road load current, at this moment, this road battery of electric power is in discharge condition, electric power output voltage descends, when voltage difference is greater than 0.7V between two batteries, monitoring unit control electricity behaviour makes battery bus connection switch closure, first batteries and second batteries output contact output, that higher road power supply of output voltage participates in another lower road power supply of output voltage for carrying, and realizes the storage battery balanced discharge; When exchanging power failure, the first batteries storage battery and the second batteries storage battery begin discharge, if the load that this moment, the two-way power supply connect there are differences or two-way battery of electric power power supply capacity is inconsistent, to cause two-way electric power output voltage fall difference, when if the output voltage difference is greater than 0.7V between the two Battery pack groups, monitoring unit control electricity behaviour makes battery bus connection switch closure, the higher power supply of output voltage participates in the lower power supply of output voltage for the work of carrying, and makes the output voltage of first batteries and second batteries near consistent; When the battery bus connection switch is in closure state, if satisfy following three conditions simultaneously: 1. first batteries exchanges input normally with second batteries, 2. the power module load capacity is enough, module does not have the current limliting alarm, and 3. the storage battery of first batteries and second batteries all is not in discharge condition; Monitoring unit sends battery bus connection switch ON-and OFF-command, and first batteries and the second battery cell bus connection switch disconnect.The battery bus connection switch also can be set to manual state in the monitoring unit simultaneously, and monitoring unit will be controlled the break-make of battery bus connection switch no longer automatically.
The present invention is resulting-48V direct current single system duplicate supply device and power supply output control method, and have the following advantages: at first this scheme has identical with the traditional communication power supply ability that electric power is provided to communication equipment.Duplicate supply can also can be closed any one road power supply output by monitoring unit simultaneously for load provides electric power in the single system, uses as single-system and single power supply power supply unit, and the fan-out capability of two rectifier cubices is unrestricted, can support client's load fully.
Secondly in the use of single system duplicate supply, the duplicate supply output current is calculated in detecting respectively, according to the output current size, regulates each road electric power output voltage automatically by software, reach the pressure reduction purpose of regulating the output diode end, thereby realize current-sharing between the two-way power supply.After the diode current-sharing, maximum all stream errors can not surpass 10% between the two-way power supply.Can satisfy the balance of load factor between system well.
Because the two-way power output end is to realize isolating rendezvous method by reverse secondary, so when wherein one tunnel DC power supply broke down, another road was unaffected, can normally export to the user load power supply.
This scheme has solved the power supply of traditional single supply system and had lost efficacy and cause the problem of user load outage, when having solved multi-power system simultaneously and having connect output, and not current-sharing between system, the bigger problem of load factor deviation of power-supply system.Having guaranteed to user load to have prolonged the useful life of system effectively in the reliable power supply, has favorable economic benefit.
Description of drawings
Fig. 1 is electrical block diagram of the present invention;
Fig. 2 is control mode flow chart of the present invention;
Fig. 3 is battery bus connection switch structural representation of the present invention;
Fig. 4 is battery bus connection switch of the present invention current trend schematic diagram when closed;
Fig. 5 is battery bus connection switch of the present invention current trend schematic diagram when disconnecting;
Embodiment
The invention will be further described by reference to the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1, the present invention that present embodiment is described is designed-48V direct current single system duplicate supply device, it is made of power supply, storage battery, single channel output 1 and two-way output 2, described power supply is divided into the first power supply 3A and second source 3B, and the first power supply 3A is in series with the first battery protection switch 4A, the first battery fuse 5A, the first batteries 6A successively; Second source 3B is in series with the second battery protection switch 4B, the second battery fuse 5B, the second batteries 6B successively; Between the first power supply 3A and the first battery protection switch 4A, tell one the tunnel and connect the first load fuse 7A and output protection switch 8 back formation first via busbar 9A; Between second source 3B and the second battery protection switch 4B, tell one the tunnel and connect the second load fuse 7B and output protection switch 8 back formation the second road busbar 9B; All directly be connected on the sharing control device 10 at the first power supply 3A and second source 3B, be provided with monitoring unit 11 at sharing control device 10; Between the first power supply 3A and second source 3B, be provided with system's bus connection switch 12; The first batteries 6A is connected the second batteries 6B by the first battery fuse 5A, battery bus connection switch 13 and the second battery fuse 5B.Described first via busbar 9A is connected with output protection switch 8 and individual event diode 14 in turn, and described the second road busbar 9B is connected with output protection switch 8 and individual event diode 14 in turn, and the two-way circuit is merged into one the tunnel and formed single channel output 1 then.Adopt diode as the isolation between the two negative rows of output and the current-sharing means of system.As shown in Figure 3, described battery bus connection switch 13 comprises that switching sky opens 15, opens 15 and is provided with electricity behaviour 16 switching sky, and electricity behaviour 16 is connected with monitoring unit 11.
As shown in Figure 2, the power supply output control method of above-mentioned-48V direct current single system duplicate supply device that present embodiment is described is the operation conditions of monitoring two groups of power supplys by monitoring power supply, by sharing control device 10 output of two groups of power supplys of current-sharing respectively.Sharing control device 10 carries out Regulation Control to the output voltage of two groups of power supplys respectively, the cycle of pressure regulation is 400ms, the precision of pressure regulation: the difference of demonstration voltage and target voltage≤± 0.1V, and the target voltage of two groups of power supplys is identical, shares float charge voltage and even charging voltage parameter.
As shown in Figure 4, when Alternating Current Power Supply normal, the first batteries 6A or the second batteries 6B module fan-out capability are less than this road load current, at this moment, this road battery of electric power is in discharge condition, electric power output voltage descends, when voltage difference is greater than 0.7V between two batteries, monitoring unit 11 control electricity behaviour 16 make battery bus connection switch 13 closures, the first batteries 6A and second batteries 6B output contact output, that higher road power supply of output voltage participates in another lower road power supply of output voltage for carrying, and realizes the storage battery balanced discharge; When exchanging power failure, the first batteries 6A storage battery and the second batteries 6B storage battery begin discharge, if the load that this moment, the two-way power supply connect there are differences or two-way battery of electric power power supply capacity is inconsistent, to cause two-way electric power output voltage fall difference, when if the output voltage difference is greater than 0.7V between the two Battery pack groups, monitoring unit 11 control electricity behaviour 16 make battery bus connection switch 13 closures, the higher power supply of output voltage participates in the lower power supply of output voltage for the work of carrying, and makes the output voltage of the first batteries 6A and the second batteries 6B near consistent.
When battery bus connection switch 13 is in closure state, if satisfy following three conditions simultaneously: 1. the first batteries 6A exchanges input normally with the second batteries 6B, 2. the power module load capacity is enough, module does not have the current limliting alarm, and 3. the storage battery of the first batteries 6A and the second batteries 6B all is not in discharge condition; Monitoring unit 11 sends battery bus connection switch 13 ON-and OFF-commands, and the first batteries 6A and the second batteries 6B battery bus connection switch 13 disconnect, and its current trend as shown in Figure 5.
Battery bus connection switch 13 also can be set to manual state in the monitoring unit 11 simultaneously, and monitoring unit 11 will be controlled the break-make of battery bus connection switch 13 no longer automatically.
Claims (7)
1. one kind-48V direct current single system duplicate supply device, it is made of power supply, storage battery, single channel output and two-way output, it is characterized in that described power supply is divided into first power supply and second source, first power supply is in series with the first battery protection switch, the first battery fuse, first batteries successively; Second source is in series with the second battery protection switch, the second battery fuse, second batteries successively; After telling one tunnel connection, the first load fuse and output protection switch between first power supply and the first battery protection switch, form first via busbar; After telling one tunnel connection, the second load fuse and output protection switch between second source and the second battery protection switch, form the second road busbar; All directly be connected on the sharing control device at first power supply and second source, be provided with monitoring unit at the sharing control device; Between first power supply and second source, be provided with the system battery bus connection switch; First batteries is connected second batteries by the first battery fuse, battery bus connection switch and the second battery fuse.
2. according to claim 1-48V direct current single system duplicate supply device; it is characterized in that described first via busbar is connected with output protection switch and individual event diode in turn; described the second road busbar is connected with output protection switch and individual event diode in turn, and the two-way circuit is merged into one the tunnel and formed single channel output then.
3. according to claim 1 and 2-48V direct current single system duplicate supply device is characterized in that described battery bus connection switch comprises that switching sky opens, and opens at the switching sky and is provided with electricity behaviour, and electricity behaviour be connected with monitoring unit.
4. the power supply output control method of as claimed in claim 1-48V direct current single system duplicate supply device is characterized in that monitoring by monitoring power supply the operation conditions of two groups of power supplys, by the output of two groups of power supplys of current-sharing respectively of sharing control device.
5. the power supply output control method of according to claim 4-48V direct current single system duplicate supply device, it is characterized in that: the sharing control device carries out Regulation Control to the output voltage of two groups of power supplys respectively, the cycle of pressure regulation is 400ms, and the target voltage of two groups of power supplys is identical, shares float charge voltage and even charging voltage parameter.
6. the power supply output control method of according to claim 4-48V direct current single system duplicate supply device, it is characterized in that: when Alternating Current Power Supply normal, first batteries or the second batteries module fan-out capability are less than this road load current, at this moment, this road battery of electric power is in discharge condition, electric power output voltage descends, when voltage difference is greater than 0.7V between two batteries, monitoring unit control electricity behaviour makes battery bus connection switch closure, first batteries and second batteries output contact output, that higher road power supply of output voltage participates in another lower road power supply of output voltage for carrying, and realizes the storage battery balanced discharge; When exchanging power failure, the first batteries storage battery and the second batteries storage battery begin discharge, if the load that this moment, the two-way power supply connect there are differences or two-way battery of electric power power supply capacity is inconsistent, to cause two-way electric power output voltage fall difference, when if the output voltage difference is greater than 0.7V between the two Battery pack groups, monitoring unit control electricity behaviour makes battery bus connection switch closure, the higher power supply of output voltage participates in the lower power supply of output voltage for the work of carrying, and makes the output voltage of first batteries and second batteries near consistent; When the battery bus connection switch is in closure state, if satisfy following three conditions simultaneously: 1. first batteries exchanges input normally with second batteries, 2. the power module load capacity is enough, module does not have the current limliting alarm, and 3. the storage battery of first batteries and second batteries all is not in discharge condition; Monitoring unit sends battery bus connection switch ON-and OFF-command, and first batteries and the second battery cell bus connection switch disconnect.
7. the power supply output control method of according to claim 4-48V direct current single system duplicate supply device, it is characterized in that: the battery bus connection switch is set to manual state in the monitoring unit, and monitoring unit will be controlled the break-make of battery bus connection switch no longer automatically.
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| CN201310114515XA CN103199606A (en) | 2013-04-03 | 2013-04-03 | -48V direct current single system double-power-source device and power output control method |
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| CN201310114515XA CN103199606A (en) | 2013-04-03 | 2013-04-03 | -48V direct current single system double-power-source device and power output control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104578365A (en) * | 2014-12-29 | 2015-04-29 | 浙江省电力设计院 | Dual-power-supply power supply for communication network equipment of electric system |
| CN104980024A (en) * | 2015-06-30 | 2015-10-14 | 成都芯源系统有限公司 | Current equalizing circuit and control method thereof |
| CN106549476A (en) * | 2016-12-09 | 2017-03-29 | 国网北京市电力公司 | Communication power supply DC power-supply system |
| TWI604386B (en) * | 2016-08-05 | 2017-11-01 | 敦泰電子有限公司 | Sending, receiving and transmitting apparatuses of a dual-power system and a fingerprint recognition system |
| CN109029445A (en) * | 2018-06-14 | 2018-12-18 | 龙岩学院 | One kind being used for indoor freedom positioning device and method |
| CN109245277A (en) * | 2018-09-25 | 2019-01-18 | 许昌许继软件技术有限公司 | A kind of backup power supply energy storage control device and a kind of power-supply system |
| CN109245218A (en) * | 2018-09-30 | 2019-01-18 | 温良桂 | A kind of new energy central control system |
| CN109473979A (en) * | 2018-11-29 | 2019-03-15 | 安徽皖兴通信息技术有限公司 | A kind of dual power supply load balancing apparatus and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578365A (en) * | 2014-12-29 | 2015-04-29 | 浙江省电力设计院 | Dual-power-supply power supply for communication network equipment of electric system |
| CN104980024A (en) * | 2015-06-30 | 2015-10-14 | 成都芯源系统有限公司 | Current equalizing circuit and control method thereof |
| CN104980024B (en) * | 2015-06-30 | 2017-10-17 | 成都芯源系统有限公司 | Current equalizing circuit and control method thereof |
| TWI604386B (en) * | 2016-08-05 | 2017-11-01 | 敦泰電子有限公司 | Sending, receiving and transmitting apparatuses of a dual-power system and a fingerprint recognition system |
| CN106549476A (en) * | 2016-12-09 | 2017-03-29 | 国网北京市电力公司 | Communication power supply DC power-supply system |
| CN106549476B (en) * | 2016-12-09 | 2019-09-20 | 国网北京市电力公司 | Communication power supply DC power-supply system |
| CN109029445A (en) * | 2018-06-14 | 2018-12-18 | 龙岩学院 | One kind being used for indoor freedom positioning device and method |
| CN109245277A (en) * | 2018-09-25 | 2019-01-18 | 许昌许继软件技术有限公司 | A kind of backup power supply energy storage control device and a kind of power-supply system |
| CN109245218A (en) * | 2018-09-30 | 2019-01-18 | 温良桂 | A kind of new energy central control system |
| CN109473979A (en) * | 2018-11-29 | 2019-03-15 | 安徽皖兴通信息技术有限公司 | A kind of dual power supply load balancing apparatus and method |
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Application publication date: 20130710 |