CN104485709A - Power-taking circuit of lithium battery management system for preventing overdischarge in UPS - Google Patents
Power-taking circuit of lithium battery management system for preventing overdischarge in UPS Download PDFInfo
- Publication number
- CN104485709A CN104485709A CN201410777377.8A CN201410777377A CN104485709A CN 104485709 A CN104485709 A CN 104485709A CN 201410777377 A CN201410777377 A CN 201410777377A CN 104485709 A CN104485709 A CN 104485709A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- ups
- management system
- battery group
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 47
- 230000008092 positive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H02J2007/0067—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a power-taking circuit of a lithium battery management system for preventing overdischarge in UPS. The battery management system is connected with positive and negative ends of a lithium battery group by virtue of a DC/DC power supply, the lithium battery group provides electric energy to the UPS, a discharge relay is connected between the negative electrode of the lithium battery group and the UPS, the discharge relay is connected with a charge relay in parallel, and the battery management system respectively controls the lithium battery group to discharge and charge by virtue of the discharge relay and the charge relay; a self-restoring normally open switch is additionally arranged between the DC/DC power supply and the negative electrode of the lithium battery group and the negative electrode of the DC/DC power supply is communicated with the negative electrode of the UPS. The circuit provided by the invention has the advantages and positive effects that overdischarge damage caused by discharge of the DC/DC power supply to the lithium batteries again when the battery group is emptied is effectively avoided, and moreover, the circuit can be independently started without the dependence on alternating electric supply; the circuit is simple to implement and can reliably protect the lithium battery, so that the cost is less.
Description
Technical field
The invention belongs to technical field of new energies, especially relate to a kind of lithium battery management system power-supply circuit put for mistake anti-in UPS.
Background technology
Lithium battery is as a kind of novel energy-accumulating medium, lighter relative to lead-acid battery weight, volume is less, the feature of more environmental protection, more and more extensive in the application of every field at present.Put to prevent lithium battery group from crossing or overcharge, a set of battery management system must be equipped with, controlled the charging and discharging of lithium battery group by charge relay and electric discharge relay.As in ups power, when civil power exists, UPS can be direct current commercial power rectification, charges, when management system judges that battery pack is full of, charge relay can be disconnected to lithium battery group, cuts off charge circuit, has ensured that battery pack can not overcharge; When civil power disconnects, lithium battery group can provide direct current to UPS, and then UPS provides power supply to the device by inversion circuit, until during battery pack emptying, battery management system, by disconnection electric discharge relay, cuts off discharge loop, prevents lithium battery group from crossing and put.For making battery management system normally work, need the power supply providing direct current 12V to it, the battery management system way to take power in the market has following two kinds:
1. directly connect a DC/DC power supply from the positive and negative two ends of lithium battery group, direct current 12V is provided to power to management system, as shown in Figure 1: by DC/DC power supply, battery pack, cut-off stream 12V powers to battery management system, and battery management system controls electric discharge and the charging of battery pack respectively to electric discharge relay S1 and charge relay S2.This kind of way to take power is when battery electric quantity emptying, although S1 disconnects, no longer power to UPS, but DC/DC power supply is still directly connected on the positive and negative two ends of battery pack, still have little power consumption, as failed in time to batteries charging, as time goes by, to the excessive electric discharge of battery pack, damage will be caused to lithium battery.
2. from civil power, provide direct current 12V to power by connecting an AC/DC power supply to management system.As shown in Figure 2: by AC/DC power supply, powered from mains 220V by AC/DC power supply cut-off stream 12V to battery management system, battery management system controls electric discharge and the charging of battery pack respectively to electric discharge relay S1 and charge relay S2.This kind of mode can avoid battery pack when emptying, complete disconnecting consumers, do not have current loss and cause lithium battery to be crossed and put, but this mode must rely on electric main, system could normally start, during as municipal power failure, then battery management system cannot be normally allowed to obtain direct current 12V power supply to make relay work.
Summary of the invention
The problem to be solved in the present invention is to provide that a kind of structure is simple, simple to operate, low cost, the safe and reliable lithium battery management system power-supply circuit put for mistake anti-in UPS.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
For the lithium battery management system power-supply circuit that mistake anti-in UPS is put, described battery management system connects the positive and negative two ends of lithium battery group by DC/DC power supply, lithium battery group provides electric energy for UPS, electric discharge relay is connected between the negative pole of lithium battery group and UPS, charged in parallel relay on electric discharge relay, battery management system controls electric discharge and the charging of lithium battery group respectively by electric discharge relay and charge relay; Increase by a self-recoverage normal open switch between described DC/DC power supply and lithium battery group negative pole, and be communicated with between the negative pole of DC/DC power supply and the negative pole of UPS.
The advantage that the present invention has and good effect are:
Owing to adopting technique scheme, not only efficiently avoid when battery pack emptying, DC/DC power supply is to the electric discharge again of lithium battery thus caused putting damage, and do not rely on electric main just can independent startup; And implement very simple, lithium battery can be protected reliably, and cost is little, and the basis of not changing primary cell management system is added a self-recoverage normal open switch again.
Accompanying drawing explanation
Fig. 1 is a kind of way to take power circuit diagram of prior art battery management system;
Fig. 2 is the another kind of way to take power circuit diagram of prior art battery management system;
Fig. 3 is way to take power circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
For the lithium battery management system power-supply circuit that mistake anti-in UPS is put, as shown in Figure 3, described battery management system connects the positive and negative two ends of lithium battery group by DC/DC power supply, lithium battery group provides electric energy for UPS, electric discharge relay S1 is connected between the negative pole of lithium battery group and UPS, charged in parallel relay S2 on electric discharge relay S1, battery management system controls electric discharge and the charging of lithium battery group respectively by electric discharge relay S1 and charge relay S2; Increase by a self-recoverage normal open switch S3 between described DC/DC power supply and lithium battery group negative pole, and be communicated with between the negative pole of DC/DC power supply and the negative pole of UPS.
The course of work is: the negative pole of the input of DC/DC power supply accesses the negative pole of lithium battery group by self-recoverage normal open switch S3, and the negative pole of DC/DC power supply links together with electric discharge relay S1 and charge relay S2 simultaneously.During first time start up system, need self-recoverage normal open switch S3 in staff dynamic circuit connector, DC/DC power supply obtains electric, the voltage of direct current 12V can be provided to battery management system, battery management system can close by controlled discharge relay S1 and charge relay S2, now self-recoverage normal open switch S3 self-recoverage is to normally open, and due to electric discharge relay S1 closed, DC/DC power supply still can normal power supply.
When civil power disconnects, lithium battery group can provide DC inverter to be supplied to load to UPS and use, if during the emptying of lithium battery pool-size, battery management system will disconnect electric discharge relay S1, due to the effect of diode of connecting with charge relay S2, no matter whether charge relay S2 disconnects, and DC/DC power supply all cannot maintain power supply, then now the load of lithium battery group is 0, can not discharge further to lithium battery group again and cause the mistake of lithium battery to be put.
When city power recovery, UPS will provide direct current, and now DC/DC power supply will directly obtain galvanic input, thus start battery management system, and battery management system starts charge relay S2 simultaneously, is charged to battery pack by UPS.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (1)
1. for lithium battery management system power-supply circuit that mistake anti-in UPS is put, described battery management system connects the positive and negative two ends of lithium battery group by DC/DC power supply, lithium battery group provides electric energy for UPS, electric discharge relay S1 is connected between the negative pole of lithium battery group and UPS, charged in parallel relay S2 on electric discharge relay S1, battery management system controls electric discharge and the charging of lithium battery group respectively by electric discharge relay S1 and charge relay S2; It is characterized in that:
Increase by a self-recoverage normal open switch S3 between described DC/DC power supply and lithium battery group negative pole, and be communicated with between the negative pole of DC/DC power supply and the negative pole of UPS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777377.8A CN104485709A (en) | 2014-12-16 | 2014-12-16 | Power-taking circuit of lithium battery management system for preventing overdischarge in UPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777377.8A CN104485709A (en) | 2014-12-16 | 2014-12-16 | Power-taking circuit of lithium battery management system for preventing overdischarge in UPS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104485709A true CN104485709A (en) | 2015-04-01 |
Family
ID=52760230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410777377.8A Pending CN104485709A (en) | 2014-12-16 | 2014-12-16 | Power-taking circuit of lithium battery management system for preventing overdischarge in UPS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104485709A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769330A (en) * | 2017-11-22 | 2018-03-06 | 集美大学 | A kind of energy management of Electrical Propulsion Ship and control method |
| CN108258754A (en) * | 2017-12-29 | 2018-07-06 | 惠州市蓝微新源技术有限公司 | A kind of charge and discharge quick seamless handoff system |
| CN108667088A (en) * | 2018-04-05 | 2018-10-16 | 宁波兆科新能源科技有限公司 | It is a kind of to support the lithium battery energy storage battery system with center line UPS |
| CN109713775A (en) * | 2019-02-27 | 2019-05-03 | 广州宝狮新能源有限公司 | A kind of lithium battery group energy-storage system comprising multiple uninterruptible power supplies |
| CN109861382A (en) * | 2019-04-03 | 2019-06-07 | 广州宝狮新能源有限公司 | A kind of power-supply system of anti-surge voltage impact |
| CN112072192A (en) * | 2020-09-15 | 2020-12-11 | 深圳市雄韬锂电有限公司 | Lithium battery management system and device |
-
2014
- 2014-12-16 CN CN201410777377.8A patent/CN104485709A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769330A (en) * | 2017-11-22 | 2018-03-06 | 集美大学 | A kind of energy management of Electrical Propulsion Ship and control method |
| CN108258754A (en) * | 2017-12-29 | 2018-07-06 | 惠州市蓝微新源技术有限公司 | A kind of charge and discharge quick seamless handoff system |
| CN108667088A (en) * | 2018-04-05 | 2018-10-16 | 宁波兆科新能源科技有限公司 | It is a kind of to support the lithium battery energy storage battery system with center line UPS |
| CN108667088B (en) * | 2018-04-05 | 2023-09-29 | 宁波兆科新能源科技有限公司 | Lithium battery energy storage system supporting UPS with neutral line |
| CN109713775A (en) * | 2019-02-27 | 2019-05-03 | 广州宝狮新能源有限公司 | A kind of lithium battery group energy-storage system comprising multiple uninterruptible power supplies |
| CN109861382A (en) * | 2019-04-03 | 2019-06-07 | 广州宝狮新能源有限公司 | A kind of power-supply system of anti-surge voltage impact |
| CN109861382B (en) * | 2019-04-03 | 2023-11-21 | 广州宝狮新能源有限公司 | Power supply system capable of preventing surge voltage from impacting |
| CN112072192A (en) * | 2020-09-15 | 2020-12-11 | 深圳市雄韬锂电有限公司 | Lithium battery management system and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |
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| WD01 | Invention patent application deemed withdrawn after publication |