CN101807804B - Uninterrupted power supply system with shared battery - Google Patents
Uninterrupted power supply system with shared battery Download PDFInfo
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- CN101807804B CN101807804B CN2010101312411A CN201010131241A CN101807804B CN 101807804 B CN101807804 B CN 101807804B CN 2010101312411 A CN2010101312411 A CN 2010101312411A CN 201010131241 A CN201010131241 A CN 201010131241A CN 101807804 B CN101807804 B CN 101807804B
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Abstract
The invention discloses an uninterrupted power supply system with a shared battery, comprising a storage battery, at least two UPS (Uninterrupted Power Supplies), switch units and capacitors. The switch units and the capacitors are arranged in one-to-one correspondence to the at least two UPS, each UPS and the corresponding switch unit are coupled in series with the storage battery to form an independent loop, each capacitor is respectively in bridge connection to the positive end and the negative end of the corresponding UPS, and the conducting times of each switch unit are not overlapped. By adopting the invention, each switch unit can be controlled to ensure that no loop exists between every two UPS, thereby ensuring the system to stably run and achieving the effect of commonly using one battery by multiple UPS.
Description
Technical field
(Uninterruptable Power Supply UPS), particularly relates to a kind of uninterruptible power system of battery sharing to the present invention relates to uninterrupted power supply.
Background technology
Present existing ups system is as shown in Figure 1, has described the ups system that the United States Patent (USP) by Schneider company is disclosed for US5654591 number among the figure, and this system comprises a UPS.In system's running, when the voltage of ordering as the P among the UPS, N can not meet the demands, UPS will ask for energy from storage battery 2, continue as electric.When adopting single UPS work, this circuit does not have problems, and can lasting energy be provided for load; Yet; When two or more UPS together uses storage battery 2 (storage battery 2 and diode A1 among the shared figure), each UPS will then can go wrong at A, B, C three place's concurrents.Because switch transistor T 1, the T2 of single UPS all have out and close two kinds of operating states; Between the switch transistor T 1 of different UPS and the situation that will occur working simultaneously between the switch transistor T 2 of different UPS; And a plurality of switch transistor T 2 of different UPS are connected in parallel through distribution system with a plurality of inductance L 2; A plurality of switch transistor T 1 and a plurality of inductance L 1 of different UPS also are connected in parallel through distribution system, therefore, and when shared storage battery 2; Electric current flows to another UPS from the switch transistor T of a UPS 1 and inductance L 1 switch transistor T 2 and inductance L 2 can appear; Or flow to the switch transistor T 1 and inductance L 1 of another UPS from the switch transistor T of a UPS 2 and inductance L 2, will cause The whole control system unstable like this, thereby make system crash.
Summary of the invention
Main purpose of the present invention is exactly the deficiency to prior art, and a kind of uninterruptible power system of battery sharing is provided, and makes a plurality of UPS in the system can CB common battery.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of uninterruptible power system of battery sharing; Comprise storage battery and at least two UPS; Comprise also and the switch element and the electric capacity of the corresponding one by one configuration of said two UPS that each UPS among said at least two UPS in series is coupled to said storage battery with the switch element of corresponding configuration and forms independently loop at least, each electric capacity is connected across respectively on the positive and negative end of corresponding UPS; The service time non-overlapping of each switch element; Said switch element comprises first metal-oxide-semiconductor and second metal-oxide-semiconductor, and the drain electrode of said first metal-oxide-semiconductor connects the positive pole of said storage battery, and the source electrode of said first metal-oxide-semiconductor connects the anode of corresponding UPS; The drain electrode of said second metal-oxide-semiconductor connects the negative terminal of corresponding UPS, and the source electrode of said second metal-oxide-semiconductor connects the negative pole of said storage battery.
Preferably, also comprise a plurality of charging paths that dispose one to one with said at least two UPS, said charging path comprises the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor reverse with said second metal-oxide-semiconductor and that connect reverse with said first metal-oxide-semiconductor and that connect.
Preferably, the service time of said each switch element is complementary.
Preferably, the frequency of opening of said switch element is 20-40Khz.
Beneficial technical effects of the present invention is:
Uninterruptible power system of the present invention comprises storage battery, at least two UPS and the switch element and the electric capacity that dispose one to one with UPS, each UPS be coupled to storage battery after corresponding switch element be connected in series and form independently loop, electric capacity is connected across on the positive and negative end of UPS accordingly; Through controlling the service time non-overlapping of each switch element, worked independently in each UPS loop, do not influence each other; It is open-minded with the mode of complementation for example to control each switch element; Realize the complementary work of multiple groups of loop, like this, just can between each UPS, not have the loop; Thereby guarantee the system stability running, reach the effect of the shared same or a plurality of storage batterys of a plurality of UPS.The present invention is applicable to all ups systems.
Description of drawings
Fig. 1 is the circuit theory diagrams of existing a kind of ups system;
Fig. 2 is the topological sketch of uninterruptible power system of the battery sharing of an embodiment of the present invention;
Fig. 3 is the break-make control timing figure of each switching tube shown in Fig. 2;
Fig. 4 is the topological sketch of uninterruptible power system of the battery sharing of another embodiment of the present invention;
Characteristic of the present invention and advantage will combine accompanying drawing to be elaborated through embodiment.
Embodiment
Alleged UPS refers to not comprise battery at interior UPS circuit among the present invention.
In an embodiment of the present invention; The uninterruptible power system of battery sharing comprise storage battery, at least two UPS and with the switch element and the electric capacity of the corresponding one by one configuration of UPS; Each UPS with in series be coupled to storage battery with the switch element of corresponding configuration and form independently loop; The electric capacity of corresponding configuration is connected across on the positive and negative end of UPS, the service time non-overlapping of each switch element.Be provided with according to this circuit, each UPS and corresponding switch element are concatenated on the same storage battery and form independently loop, both can select one of them UPS work separately; Also can be through suitably controlling each switch element; Make a plurality of UPS parallel operations,, guarantee that promptly any time has only a switch element open-minded as long as make the service time non-overlapping of each switch element; Just can not cause battery tension to be added to simultaneously on a plurality of electric capacity; Form the loop between different UPS, thus each UPS can be independently, normally work, reach the shared effect of storage battery.
As shown in Figure 2, according to a kind of embodiment, the uninterruptible power system of battery sharing comprises that storage battery Bat, three UPS are UPS1, UPS2 and UPS3, three switch elements and three capacitor C 1, C2, C3; Each UPS, switch element and electric capacity become configuration set one to one, and first switch element comprises metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, wherein; The drain electrode of metal-oxide-semiconductor Q1 connects the positive pole of storage battery Bat; The source electrode of metal-oxide-semiconductor Q1 connects the anode of UPS1, and the drain electrode of metal-oxide-semiconductor Q2 connects the negative terminal of UPS1, and the source electrode of metal-oxide-semiconductor Q2 connects the negative pole of storage battery Bat; The grid of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 is connected drive circuit (not shown) respectively; UPS1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 are connected in series with storage battery and form independently loop, and the positive pole of capacitor C 1 is connected on the anode of UPS1, and the negative pole of capacitor C 1 is connected on the negative terminal of UPS1.Metal-oxide-semiconductor Q3, Q4 and the UPS3 of UPS2 and second switch element and metal-oxide-semiconductor Q5, the Q6 of the 3rd switch element adopt and link to each other in the same way and be connected to storage battery.Should explain that alleged first metal-oxide-semiconductor and second metal-oxide-semiconductor among the present invention is with regard to first switch element; Being respectively metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, with regard to second switch element, is respectively metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4; With regard to the 3rd switch element, be respectively metal-oxide-semiconductor Q5 and metal-oxide-semiconductor Q6.
Capacitor C 1, C2, C3 have polar capacitor, electrochemical capacitor for example, but also can replace with polarity free capacitor.Because capacitor C 1, C2, C3 can store certain energy, in the time of so just can guaranteeing to switch between three UPS, have corresponding energy to offer corresponding UPS.According to present embodiment, as long as make the service time non-overlapping of each switch element, UPS1, UPS2 and UPS3 be just can be under the situation of shared storage battery Bat independent, normally work.
Preferably, three switch elements of control are open-minded with the mode of complementation.Work-based logic is as shown in Figure 3, and mode of operation is following: metal-oxide-semiconductor Q1 and Q2 work simultaneously, and metal-oxide-semiconductor Q3 and Q4 work simultaneously, and metal-oxide-semiconductor Q5 and Q6 work simultaneously, and three groups of complementary work of metal-oxide-semiconductor.When metal-oxide-semiconductor Q1, Q2 shutoff, capacitor C 1 is for UPS1 provides energy, and when metal-oxide-semiconductor Q3, Q4 shutoff, capacitor C 2 is for UPS2 provides energy, and when metal-oxide-semiconductor Q5, Q6 shutoff, capacitor C 3 provides energy for UPS3.More preferably, metal-oxide-semiconductor Q1-Q6 all is operated in the high frequency state, and for example frequency is 20-40Khz.Because metal-oxide-semiconductor Q1, Q2, metal-oxide-semiconductor Q3, Q4 and metal-oxide-semiconductor Q5, Q6 complementally work, so the service time of three groups of metal-oxide-semiconductors is not overlapping, have only that wherein one group of metal-oxide-semiconductor is open-minded any time, so each UPS can be with the mode steady operation of shared storage battery.
Fig. 4 has schematically showed the uninterruptible power system of the battery sharing of another kind of embodiment.On the basis of last embodiment, this uninterruptible power system also comprises three charging paths that three UPS dispose one to one.As shown in Figure 4; First charging path comprises metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8 reverse with metal-oxide-semiconductor Q2 and that connect reverse with metal-oxide-semiconductor Q1 and that connect; Second charging path comprises metal-oxide-semiconductor Q9 and metal-oxide-semiconductor Q10 reverse with metal-oxide-semiconductor Q4 and that connect reverse with metal-oxide-semiconductor Q3 and that connect, and the 3rd charging path comprises metal-oxide-semiconductor Q11 and metal-oxide-semiconductor Q12 reverse with metal-oxide-semiconductor Q6 and that connect reverse with metal-oxide-semiconductor Q5 and that connect.Under city's power mode, UPS1 can provide electric current I 1 to charge to battery Bat through metal-oxide-semiconductor Q7, Q8, and UPS2 can provide electric current I 2 through metal-oxide-semiconductor Q9, Q10 accumulators Bat charging, and UPS3 can provide electric current I 3 through metal-oxide-semiconductor Q11, Q12 accumulators Bat charging.Through the charging path is set, guaranteed that UPS is operated in city's power mode storage battery of following time and can obtains good electric weight and replenish.Should explain that alleged the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor among the present invention is with regard to first charging path; Being respectively metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8, with regard to second charging path, is respectively metal-oxide-semiconductor Q9 and metal-oxide-semiconductor Q10; With regard to the 3rd charging path, be respectively metal-oxide-semiconductor Q11 and metal-oxide-semiconductor Q12.
Above content is to combine concrete preferred implementation to further explain that the present invention did; Can not assert that practical implementation of the present invention is confined to these explanations, for example, UPS, switch element and electric capacity are not limited to three groups; Also can be two or more groups; And for example, the control of the break-make of each switch element is not limited to complementation, as long as the break-make pattern does not produce harmful effect each other between each loop.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (4)
1. the uninterruptible power system of a battery sharing; Comprise storage battery and at least two UPS, it is characterized in that, also comprise switch element and electric capacity with the corresponding one by one configuration of said at least two UPS; Each UPS among said at least two UPS in series is coupled to said storage battery with the switch element of corresponding configuration and forms independently loop; Each electric capacity is connected across respectively on the positive and negative end of corresponding UPS, and the service time non-overlapping of each switch element, said switch element comprise first metal-oxide-semiconductor and second metal-oxide-semiconductor; The drain electrode of said first metal-oxide-semiconductor connects the positive pole of said storage battery; The source electrode of said first metal-oxide-semiconductor connects the anode of corresponding UPS, and the drain electrode of said second metal-oxide-semiconductor connects the negative terminal of corresponding UPS, and the source electrode of said second metal-oxide-semiconductor connects the negative pole of said storage battery.
2. the uninterruptible power system of battery sharing as claimed in claim 1; It is characterized in that; Also comprise a plurality of charging paths that dispose one to one with said at least two UPS, said charging path comprises the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor reverse with said second metal-oxide-semiconductor and that connect reverse with said first metal-oxide-semiconductor and that connect.
3. according to claim 1 or claim 2 the uninterruptible power system of battery sharing is characterized in that the service time of said each switch element is complementary.
4. according to claim 1 or claim 2 the uninterruptible power system of battery sharing is characterized in that the frequency of opening of said switch element is 20-40Khz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101312411A CN101807804B (en) | 2010-03-19 | 2010-03-19 | Uninterrupted power supply system with shared battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101312411A CN101807804B (en) | 2010-03-19 | 2010-03-19 | Uninterrupted power supply system with shared battery |
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| CN101807804A CN101807804A (en) | 2010-08-18 |
| CN101807804B true CN101807804B (en) | 2012-07-04 |
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| US20210320519A1 (en) * | 2020-04-09 | 2021-10-14 | Delta Electronics, Inc. | Power supply system and method of operating the same |
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| JP4110565B2 (en) * | 2001-07-24 | 2008-07-02 | 株式会社ジーエス・ユアサコーポレーション | Unit type uninterruptible power supply |
| CN2689566Y (en) * | 2004-02-10 | 2005-03-30 | 山特电子（深圳）有限公司 | Uninterruptible power supply with battery shared |
| TWI367619B (en) * | 2008-09-01 | 2012-07-01 | Delta Electronics Inc | Parallel-connectred uninterrupted power supply circuit |
| CN101699699A (en) * | 2009-07-30 | 2010-04-28 | 艾默生网络能源有限公司 | Uninterruptible power supply |
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Address after: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
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