CN1983709A - Parallel secondary-battery overcurrent and discharge protector - Google Patents
Parallel secondary-battery overcurrent and discharge protector Download PDFInfo
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- CN1983709A CN1983709A CNA2005101305385A CN200510130538A CN1983709A CN 1983709 A CN1983709 A CN 1983709A CN A2005101305385 A CNA2005101305385 A CN A2005101305385A CN 200510130538 A CN200510130538 A CN 200510130538A CN 1983709 A CN1983709 A CN 1983709A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention is concerned with secondary battery over-discharge protecting equipment for parallel power supply, it is: at least two battery unit forms a battery group by two power outputting line parallel, each battery unit and the power outputting circuit connect a low-voltage closure; each battery unit can be protected by the voltage closure independently, the failure of single battery unit only stop the faulted battery unit, other battery units can discharge continuously; if the power supply for electric vehicle, the failure of single battery unit will not lead the break down of the vehicle.
Description
Technical field
The present invention is a kind of secondary cell overdischarge protector of parallel operation, is meant especially when a plurality of battery units are carried out parallel operation, can independently carry out the circuit arrangement that over blocks at each battery unit.
Background technology
But secondary cell is owing to have the characteristic that recharge uses, be widely used in various electronic goods at present, when secondary cell is used in electronic goods, be generally the user mode of little electric current, non-moment deep discharge, battery can not be subjected to the obvious influence of discharged condition useful life, and can keep a suitable level;
When secondary cell is used in motor vehicle, the discharge operation scope of battery then seems wider, the operating position of transient large current discharge (vehicle heavy duty activate), continuation heavy-current discharge (the vehicle heavy duty is travelled) or deep discharge (continue travel to electric power exhaust fully) is often arranged in the use, so all can cause the battery major injury in useful life;
In traditional battery discharge protection technology, electrical machinery of Japanese sanyo has promptly proposed No. 83106489 patent of application case, it mainly is to carry out detecting voltage and comparison at the terminal voltage of battery, when the terminal voltage of battery when comparison is lower than discharge cut-off voltage (low-voltage), promptly with power down process, protect the battery can be not impaired with this;
Need electric weight that it should be noted that motor vehicle is quite big usually, and can be formed in parallel with several battery units on the practice is battery pack, in order to do obtaining enough electric weight; Find through actual service test, when each battery unit carries out the parallel discharge use, the fault of battery pack can occur in other battery unit usually, and cause the global voltage of battery pack to reduce, if be about to the whole battery group power supply during in the battery pressure drop to cut-ff voltage blocks with conventional art, the operation offset that can cause motor vehicle to decommission suddenly forms the safety problem on the mobility operation;
Therefore, the inventor does one's utmost thinking, if the single battery unit of tradition can be broken down the time, the technology that the integral battery door group is promptly cut off the power supply and can't be exported improves when breaking down for the individual cell unit when battery pack, only block this other fail battery unit, allow the battery unit of non-fault still can keep normal electricity output, when being used in motor vehicle, when single battery unit breaks down, vehicle still can slowly travel and wait to repair to the safe place, exempts the danger of travelling of sudden power.
Summary of the invention
Main purpose of the present invention, it is the secondary cell overdischarge protector that is to provide a kind of parallel operation, mainly being in parallel by two electric power output lines by at least two battery units constitutes a battery pack, and respectively is in series with a low-voltage by device between each battery unit and electric power outlet line; By this, each battery unit all can independently be subjected to the low-voltage of a voltage cut-off device by protection, and single battery unit fault is only by this fail battery unit, but the still sustainable discharge in all the other normal battery unit of battery pack.
For reaching the foregoing invention purpose, the technical scheme that is adopted is as follows: a kind of secondary cell overdischarge protector of parallel operation, and it comprises: at least two battery units, each battery unit can be linked by one or a plurality of independent battery and constitute; Two electric power output lines are done electrically to connect with the output of each battery unit respectively, make each battery unit give load with kenel in parallel from two electric power output line output powers; A plurality of low-voltages are by device, and two ends electrically connect with an electric power output line and a battery unit respectively, make low-voltage end device and one electric power output line is the series circuit kenel; By this, each battery unit all can independently be subjected to the low-voltage of a voltage cut-off device by protection, and single battery unit fault is only by this fail battery unit.
Low-voltage can constitute by the long-pending diode of receiving by device, if the operating voltage of this diode is more than 12 volts, and cut-ff voltage is below nine volts, then applicable to using in 12 volts the battery-powered system.
Can a fault cresset be located at battery unit and low-voltage by between the device, when making the fail battery unit be cut off power supply, the fault cresset extinguishes simultaneously, shows the state of this fail battery unit.
The visual electric weight demand of this battery unit obtains predetermined power after carrying out series and parallel with a plurality of independent batteries.
The beneficial effects of the utility model are: the secondary cell overdischarge protector of a kind of parallel operation provided by the invention, mainly being in parallel by two electric power output lines by at least two battery units constitutes a battery pack, and respectively is in series with a low-voltage by device between each battery unit and electric power outlet line; Therefore, each battery unit all can independently be subjected to the low-voltage of a voltage cut-off device by protection, and single battery unit fault is only by this fail battery unit, but all the other normal battery unit of battery pack can reach the effect of continuous discharge.
Description of drawings
Fig. 1 is that battery feed circuit of the present invention links schematic diagram.
Fig. 2 is the schematic diagram that constitutes a battery unit in the battery of the present invention with two independent batteries.
Fig. 3 be the present invention wherein a battery unit fault blocked the power supply state schematic diagram.
Fig. 4 is that the present invention sets a fault cresset view in each battery unit.
The primary clustering symbol description
10 battery pack, 11 battery units
12 independent batteries, 201,202 electric power output lines
30 low-voltages are by device 40 fault cressets
50 loads
Embodiment
About the present invention for reaching above-mentioned purpose, the technology that is adopted, means and effect, lift now a preferable possible embodiments cooperate graphic detailed description as after; At first, please cooperate and consult Fig. 1, shown in Figure 2, the secondary cell overdischarge protector of the parallel operation that the embodiment of the invention provided, it mainly is in parallel by two electric power output lines 201 and 202 by at least two battery units 11 and constitutes a battery pack 10, and can respectively be in series with a low-voltage by device 30 and constitute circuit structure of the present invention in each battery unit 11 and 201 of electric power output lines; Wherein:
This battery pack 10 can be made of at least two battery units 11 parallel operations according to required electric weight sum total; And this each battery unit 11 can constitute by or a plurality of independent battery 12, these battery unit 11 visual electric weight demands, carry out series and parallel with a plurality of independent batteries 12 after, obtain predetermined power; In other words, the quantity of these battery pack 10 required battery units 11 and independent battery 12 mainly is to see the electric weight sum total that battery pack 10 is required and decide; For example: see also shown in Figure 2ly, promptly be to be in series, and constitute the example of a battery unit 11 with two independent batteries 12;
This two electric power output line 201 and 202 is done electrically to connect with the output of each battery unit 11 respectively, makes each battery unit 11 be able to parallel battery 10 kenels and gives load 50 from two electric power output lines 201 and the power supply of 202 output powers:
This low-voltage is by device 30, and its two end electrically connects with an electric power output line 201 and battery unit 11 respectively, makes low-voltage end device 30 and is the series circuit kenel with one electric power output line 201; This low-voltage can be selected for use according to actual demand by device 30 its cut-ff voltages; On the practice, low-voltage can constitute by the long-pending diode of receiving by device 30, and for example: if the operating voltage of this diode is more than 12 volts, and cut-ff voltage is below nine volts, then applicable to using in 12 volts battery pack 10 electric power systems;
The above assembly that is each member of the present invention and structure concerns the position, now its user mode is described in detail as follows:
Please consult Fig. 1, shown in Figure 2 again, if be that 12 volts battery pack 10 is during as the implementation of this case with output potential, then indivedual output potentials of each battery unit 11 also need be all 12 volts, in order to do carrying out the parallel connection output connection of each battery unit 11 by two electric power output lines 201 and 202; And but this low-voltage is more than 12 volts by device 30 selection work voltages, and cut-ff voltage is for being lower than below ten volts; Subsidiary one what carry is that the output electric weight of each battery unit 11 is formed, and can carry out series and parallel by a plurality of independent batteries 12 and link allotment and constitute;
Subsidiary one carry be, independent battery 12 quantity that constitute each battery unit 11 more for a long time, then the uncertainty that breaks down of battery unit 11 promptly increases relatively, and get over complicated, but by the technology of the present invention, the interference of the battery unit 11 of can effectively fixing a breakdown and tying down; Be described in detail as follows:
When the arbitrary battery unit 11 in the battery pack 10 or independent battery 12 break down, the terminal voltage value of this fail battery unit 11 certainly will reduce, when the magnitude of voltage of this fail battery unit 11 is lower than low-voltage by ten volts of cut-ff voltages of device 30, then low-voltage can the start cut-off circuits by device 30, make formation electrical opening circuit (seeing also shown in Figure 3) between 201 groups of fail battery unit 11 and one electric power output lines; It should be noted that, low-voltage is to connect with battery unit 11 by device 30, and this each battery unit 11 is by two electric power output lines 201 and 202 persons of being in parallel, and when the battery unit 11 of fault is cut off when blocking, can't influence the output of other normal battery unit 11;
By the present invention, in the practice running, can bring into play quite good operation and result of use, see also shown in Figure 3, for example: when single battery unit 11 broke down, the electric power of two electric power output lines 201 and 202 exportable good electrical pool units 11 can't cause electric power can't export fully; If when being applied to the supply of electric power of motor vehicle, the fault of single battery unit 11, the offset problem that can't cause vehicle can't travel fully suddenly;
Moreover, see also shown in Figure 4, wherein can a fault cresset 40 be located at battery unit 11 and low-voltage by between the device 30, when making fail battery unit 11 be cut off power supply, fault cresset 40 extinguishes simultaneously, shows the state of this fail battery unit 11, can directly get rid of the battery unit 11 of changing fault, the electricity usage of quick-recovery battery pack 10 soon, comparatively convenient in the maintenance, do not need to look into one by one and repair.
Claims (4)
1. the secondary cell overdischarge protector of a parallel operation is characterized in that it comprises:
At least two battery units, each battery unit can be linked by one or a plurality of independent battery and constitute;
Two electric power output lines are done electrically to connect with the output of each battery unit respectively, make each battery unit give load with kenel in parallel from two electric power output line output powers;
A plurality of low-voltages are by device, and two ends electrically connect with an electric power output line and a battery unit respectively, make low-voltage end device and one electric power output line is the series circuit kenel; By this, each battery unit all can independently be subjected to the low-voltage of a voltage cut-off device by protection, and single battery unit fault is only by this fail battery unit.
2. the secondary cell overdischarge protector of parallel operation according to claim 1; it is characterized in that: low-voltage can constitute by the long-pending diode of receiving by device; if the operating voltage of this diode is more than 12 volts; and cut-ff voltage is below nine volts, then applicable to using in 12 volts the battery-powered system.
3. the secondary cell overdischarge protector of parallel operation according to claim 1; it is characterized in that: can a fault cresset be located at battery unit and low-voltage by between the device; when making the fail battery unit be cut off power supply; the fault cresset extinguishes simultaneously, shows the state of this fail battery unit.
4. the secondary cell overdischarge protector of parallel operation according to claim 1, it is characterized in that: the visual electric weight demand of this battery unit obtains predetermined power after carrying out series and parallel with a plurality of independent batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101305385A CN1983709A (en) | 2005-12-14 | 2005-12-14 | Parallel secondary-battery overcurrent and discharge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101305385A CN1983709A (en) | 2005-12-14 | 2005-12-14 | Parallel secondary-battery overcurrent and discharge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1983709A true CN1983709A (en) | 2007-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101305385A Pending CN1983709A (en) | 2005-12-14 | 2005-12-14 | Parallel secondary-battery overcurrent and discharge protector |
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| CN (1) | CN1983709A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208820A (en) * | 2010-03-29 | 2011-10-05 | 比亚迪股份有限公司 | Energy storage battery pack parallel-connection device and control method thereof |
| CN108569142A (en) * | 2017-03-10 | 2018-09-25 | 法拉第未来公司 | System and method for from the integrated redundancy busbar framework to electric system |
| US10093187B2 (en) | 2016-08-01 | 2018-10-09 | Ford Global Technologies, Llc | Redundant power supply |
-
2005
- 2005-12-14 CN CNA2005101305385A patent/CN1983709A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208820A (en) * | 2010-03-29 | 2011-10-05 | 比亚迪股份有限公司 | Energy storage battery pack parallel-connection device and control method thereof |
| WO2011120415A1 (en) * | 2010-03-29 | 2011-10-06 | Byd Company Limited | Parallel device for battery module and controlling method thereof |
| CN102208820B (en) * | 2010-03-29 | 2013-08-21 | 比亚迪股份有限公司 | Energy storage battery pack parallel-connection device and control method thereof |
| US10093187B2 (en) | 2016-08-01 | 2018-10-09 | Ford Global Technologies, Llc | Redundant power supply |
| CN108569142A (en) * | 2017-03-10 | 2018-09-25 | 法拉第未来公司 | System and method for from the integrated redundancy busbar framework to electric system |
| CN108569142B (en) * | 2017-03-10 | 2022-04-15 | 法拉第未来公司 | System and method for integrating redundant bus architecture into power system |
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