CN103199586B - -48V direct current single system double-power-source storage battery contact device and switching method thereof - Google Patents

-48V direct current single system double-power-source storage battery contact device and switching method thereof Download PDF

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Publication number
CN103199586B
CN103199586B CN201310114511.1A CN201310114511A CN103199586B CN 103199586 B CN103199586 B CN 103199586B CN 201310114511 A CN201310114511 A CN 201310114511A CN 103199586 B CN103199586 B CN 103199586B
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batteries
storage battery
battery
power supply
monitoring unit
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CN103199586A (en
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林整
阮长根
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Huaxin Consulting Co Ltd
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Huaxin Consulting Co Ltd
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Abstract

The invention relates to a -48V direct current single system double-power-source storage battery contact device and a switching method thereof. The -48V direct current single system double-power-source storage battery contact device comprises storage batteries, two ways of power sources and a monitoring unit, wherein the storage batteries are divided into a first storage battery pack and a second storage battery pack, the first storage battery pack is connected with the second storage battery pack through a battery bus coupler switch, the battery bus coupler switch comprises a switching air switch, an electrical operation mechanism is arranged on the switching air switch, and the electrical operation mechanism is connected with the monitoring unit. The structure of the -48V direct current single system double-power-source storage battery contact device is characterized in that the relation between the two battery packs are automatically controlled in real time by using a system state obtained by monitoring of the monitoring unit, and thus the two battery packs can be maintained in the optimal states all the time.

Description

-48V direct current single system duplicate supply storage battery communication means and changing method thereof
Technical field
The present invention relates to a kind of storage battery communication means, particularly-48V direct current single system duplicate supply storage battery communication means and changing method thereof.
Background technology
Be used for providing in power process to communication equipment at traditional double power-supply system, the power supply capacity that often there will be two-way power supply is inconsistent, causes there is larger pressure reduction between two-way power supply.Thus make wherein fan-out capability higher Na mono-road battery of electric power occur electric discharge.Such as at alternating current under normal circumstances, the fan-out capability of power supply A or power supply B is less than the load on this road, or wherein a road power supply input sky opens escape, and now this road battery of electric power will be in discharge condition, causes two-way battery of electric power discharge and recharge unbalanced phenomena; Also may be in AC outage situation, now two-way battery of electric power be all in discharge condition, and because the load of two-way power supply there are differences, load great mono-road battery of electric power discharging current is large, and cell voltage is low.In addition, even if the load of two-way power supply is consistent, if but the power supply capacity of storage battery there are differences, the phenomenon also will another road storage battery of the storage battery pressure ratio of power supply capacity deficiency being caused to force down.Above phenomenon not only for cause storage battery and duration of power supply reduce, also can cause decline the useful life of storage battery simultaneously.
Summary of the invention
The object of the invention is the deficiency in order to solve above-mentioned technology and provide a kind of storage battery stable output, without potential safety hazard, reliability is high, controls-48V direct current single system duplicate supply storage battery communication means and changing method thereof easily.
In order to achieve the above object,-48V direct current single system duplicate supply storage battery communication means designed by the present invention, it comprises storage battery, two-way power supply and monitoring unit, described storage battery is divided into the first batteries and the second batteries, the first described batteries is connected with the second batteries by battery bus connection switch, battery bus connection switch comprises switching sky and opens, and open at switching sky and be provided with electricity behaviour, electricity is grasped and is connected with monitoring unit.The feature of this structure is to utilize monitoring unit to monitor the system mode obtained, and controls the relation between two group storage battery groups in real time automatically, makes two group storage battery groups remain at optimum state.
The changing method of-48V direct current single system duplicate supply storage battery the communication means designed by the present invention is: when Alternating Current Power Supply is normal, first batteries or the second batteries module fan-out capability are less than this road load current, now, this road battery of electric power is in discharge condition, electric power output voltage declines, when between two batteries, voltage difference is greater than 0.7V, monitoring unit controls electricity behaviour makes battery bus connection switch close, first batteries and the second batteries output are got in touch with and being exported, output voltage participates in another lower road power supply of output voltage for carrying compared with Gao Na road power supply, realize battery equalisation electric discharge, when exchanging power failure, first batteries and the second batteries start to discharge, if the load that now two-way power supply connects there are differences or two-way battery of electric power power supply capacity is inconsistent, two-way electric power output voltage fall will be caused different, if when between two Battery pack groups, output voltage difference is greater than 0.7V, monitoring unit controls electricity behaviour makes battery bus connection switch close, 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 and the second batteries close to consistent, when storage battery communication means is in closure state, if meet following three conditions simultaneously: 1. the first batteries exchanges with the second batteries and inputs normally, 2. power module load capacity is enough, module is without current limliting alarm, and 3. the first batteries and the second batteries are not all in discharge condition, monitoring unit sends storage battery communication means ON-and OFF-command, and the first batteries and the second battery cell bus connection switch disconnect.This control method, controls mainly through monitoring unit, according to different situations, controls the connection between two group storage battery groups, make two group storage battery groups remain at optimum state.
In order to adapt to some special environments for use, in described control unit, battery bus connection switch is set to manual mode, the no longer automatic break-make to storage battery communication means controls by monitoring unit, and directly manually controls the annexation between two group storage battery groups.
-48V direct current single system duplicate supply storage battery the communication means that the present invention obtains and changing method thereof, in traditional double loop power supply output system, when solving double loop power supply fan-out capability difference well, the loaded work piece that power supply fan-out capability connects less than Na mono-tunnel is abnormal.By the correlation of storage battery communication means, the power supply that fan-out capability is abundant participates in fan-out capability inadequate Na mono-road power supply and provides electric power to load, thus achieve the mutual compensation of fan-out capability between double loop power supply well, effectively ensuring two-way load that power supply connects can steady operation, also solve when supplying power with double circuit, two-way power supply gets in touch with the problem of output mutually.
Secondly in single system duplicate supply, carry out association by storage battery communication means to two-way out-put supply to export, if the storage battery of a road power supply starts electric discharge, when monitoring unit detects this road output voltage and another road electric power output voltage difference more than 0.7V, monitoring unit controls communication means and connects, high-tension circuit participates in the circuit of low-voltage in time for carrying, batteries in the circuit of low-voltage is made to stop or reducing discharging current, efficiently reduce the imbalance problem discharged between the storage battery of two-way power supply, effectively extend the useful life of storage battery simultaneously, there is good economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 be the second tunnel load of battery bus connection switch of the present invention when closing larger time current trend figure;
Fig. 3 be the first via load of battery bus connection switch of the present invention when closing larger time current trend figure;
Current trend schematic diagram when Fig. 4 is battery bus connection switch of the present invention disconnection;
Embodiment
Below by embodiment, the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1,-48V direct current single system duplicate supply storage battery the communication means that the present embodiment describes, it comprises storage battery 1, two-way power supply and monitoring unit 2, described storage battery 1 is divided into the first batteries 1A and the second batteries 1B, the first described batteries 1A is connected with the second batteries 1B by battery bus connection switch 4, battery bus connection switch 4 comprises switching sky and opens 3, and open on 3 at switching sky and be provided with electricity behaviour 5, electricity is grasped 5 and is connected with monitoring unit 2.
The changing method of-1B8V direct current single system duplicate supply storage battery 1 communication means that the present embodiment describes is: as Fig. 2, shown in Fig. 3, as alternating current A, B powers normally, first batteries 1A or the second batteries 1B module fan-out capability are less than this road load current, now, this road battery of electric power 1 is in discharge condition, electric power output voltage declines, when between two batteries, voltage difference is greater than 0.7V, monitoring unit 2 controls electricity behaviour 5 makes battery bus connection switch 4 close, first batteries 1A and the second batteries 1B output are got in touch with and being exported, output voltage participates in another lower road power supply of output voltage for carrying compared with Gao Na road power supply, realize storage battery 1 balanced discharge, when exchanging power failure, first batteries 1A and the second batteries 1B starts to discharge, if the load that now two-way power supply connects there are differences or two-way battery of electric power 1 power supply capacity is inconsistent, two-way electric power output voltage fall will be caused different, if when between two Battery pack groups, output voltage difference is greater than 0.7V, monitoring unit 2 controls electricity behaviour 5 makes battery bus connection switch 4 close, 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 1A and the second batteries 1B close to consistent, when storage battery 1 communication means is in closure state, if meet following three conditions simultaneously: 1. the first batteries 1A exchanges with the second batteries 1B and inputs normally, 2. power module load capacity is enough, module is without current limliting alarm, and 1A. first batteries 1A and the second batteries 1B is not in discharge condition, monitoring unit 2 sends storage battery 1 communication means ON-and OFF-command, and the first batteries 1A and the second batteries 1B battery bus connection switch 4 disconnect, as shown in Figure 3.This control method, controls mainly through monitoring unit 2, according to different situations, controls the connection between two group storage battery groups, makes two group storage battery groups remain at optimum state.
In control unit simultaneously, battery bus connection switch 4 is set to manual mode, and the no longer automatic break-make to storage battery 1 communication means controls by monitoring unit 2, and directly manually controls the annexation between two group storage battery groups.

Claims (2)

1. the changing method an of-48V direct current single system duplicate supply storage battery communication means,-48V direct current single system duplicate supply storage battery communication means described in it, it comprises storage battery, two-way power supply and monitoring unit, wherein said storage battery is divided into the first batteries and the second batteries, the first described batteries is connected with the second batteries by battery bus connection switch, battery bus connection switch comprises switching sky and opens, and open at switching sky and be provided with electricity behaviour, electricity is grasped and is connected with monitoring unit; It is characterized in that: when Alternating Current Power Supply is normal, first batteries or the second batteries module fan-out capability be less than separately with load current, now, this road battery of electric power is in discharge condition, electric power output voltage declines, when difference between two batteries output voltages is greater than 0.7V, monitoring unit controls electricity behaviour makes battery bus connection switch close, first batteries and the second batteries output are got in touch with and being exported, output voltage participates in another lower road power supply of output voltage for carrying compared with Gao Na road power supply, realizes battery equalisation electric discharge; When exchanging power failure, first batteries and the second batteries start to discharge, if the load that now two-way power supply connects there are differences or two-way battery of electric power power supply capacity is inconsistent, two-way electric power output voltage fall will be caused different, if when the difference between two Battery pack group output voltages is greater than 0.7V, monitoring unit controls electricity behaviour makes battery bus connection switch close, the power supply that output voltage is higher participates in the lower power supply of output voltage for the work of carrying, and makes the output voltage of the first batteries and the second batteries be in consistent state; When storage battery communication means is in closure state, if meet following three conditions simultaneously: 1. the first batteries exchanges with the second batteries and inputs normally, 2. power module load capacity is enough, module is without current limliting alarm, and 3. the first batteries and the second batteries are not all in discharge condition; Monitoring unit sends storage battery communication means ON-and OFF-command, and the first batteries and the second battery cell bus connection switch disconnect.
2. the changing method of-48V direct current single system duplicate supply storage battery communication means according to claim 1, it is characterized in that: in monitoring unit, battery bus connection switch is set to manual mode, the no longer automatic break-make to storage battery communication means controls by monitoring unit.
CN201310114511.1A 2013-04-03 2013-04-03 -48V direct current single system double-power-source storage battery contact device and switching method thereof Active CN103199586B (en)

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CN104980024B (en) * 2015-06-30 2017-10-17 成都芯源系统有限公司 Flow equalizing circuit and its control method
US10523048B2 (en) * 2018-02-16 2019-12-31 Monolithic Power Systems, Inc. Power supply and power supplying method with power backup and power sharing

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CN203119594U (en) * 2013-04-03 2013-08-07 华信邮电咨询设计研究院有限公司 -48V direct current single-system double-power-supply storage battery connecting device

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