CN205544384U - A series of cells redundancy structure of group battery electric quantity can release completely - Google Patents
A series of cells redundancy structure of group battery electric quantity can release completely Download PDFInfo
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- CN205544384U CN205544384U CN201620070785.4U CN201620070785U CN205544384U CN 205544384 U CN205544384 U CN 205544384U CN 201620070785 U CN201620070785 U CN 201620070785U CN 205544384 U CN205544384 U CN 205544384U
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- battery
- cell
- group battery
- cells
- circuit
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Abstract
The utility model discloses a A series of cells redundancy structure of group battery electric quantity can release completely, including group battery, group battery voltage detection circuit, group battery ON -OFF control circuit that a N+1 cell circuit series connection constitutes, group battery voltage detection circuit is connected with group battery ON -OFF control circuit, the group battery is connected with group battery voltage detection circuit and group battery ON -OFF control circuit respectively, every cell circuit constitutes with a diode is parallelly connected after being established ties by a battery cell and a switch again to the positive negative polarity orientation of diode and battery cell's positive negative polarity opposite direction during the antithetical couplet, the utility model discloses can make paiing of battery cell partial volume screening make up the requirement can be very wide, does not have unable mating battery cell and exist to the battery cost has been reduced, can also keep apart the battery cell who became invalid on a group battery, make the group battery can continue normal supplying power for the load, promote the reliability of group battery, also increase the security of group battery.
Description
Technical field
This utility model relates to the power circuit field of electronic product, refers more particularly to a kind of energy completely
The battery series connection redundancy structure of release battery electric quantity.
Background technology
In various electronic products, the power supply having many products is to be powered by set of cells, works as electricity
When pond is connected into set of cells use, due to the concordance difference of cell, can exist in set of cells
The unmatched problem of cell, some cell capacity are big, and some cell capacity are little,
And the self-discharge rate of cell is the most different, after causing using a period of time, though identical capacity
Cell, also there will be the different situation of state-of-charge, some cell state-of-charges
Height, some state-of-charges are low, when electric discharge, the cell that state-of-charge is low or capacity is low, meeting
First being vented, set of cells output subsequently can be turned off the cell overdischarge avoiding being vented, this
Time set of cells in except the minimum batteries of voltage, the electricity of other cell is released the most completely
Putting, when cell differs greatly, set of cells also has quite a few utilisable energy to utilize.
This situation also results in the life time decay of set of cells and accelerates.In order to solve the inconsistent product of cell
Raw problem, have employed balancing technique in battery management system, including active equalization and passive equilibrium.
Passive equilibrium mainly solves the equalization problem of charging, it is impossible to solving equalization discharge, active equalization is permissible
Being swapped by energy between cell, but cost is the highest, circuit is complicated, and efficiency is low,
Reliability is relatively low, the power limited of transmission, in the case of load current is relatively big, also cannot release completely
Put all electricity of set of cells.
For set of cells due to the battery life attenuation problem of the inconsistent generation of cell characteristic,
Battery management system (BMS) usually uses cell is carried out partial volume screening match,
And solved by the method increasing battery equalizing circuit, equalizing circuit common on market is passive
Equilibrium, it comes in fact by the battery of high voltage carries out by-pass shunt (or electric discharge) when charging
Existing, charge balancing can only be ensured, be but unable to reach the effect of equalization discharge, used in set of cells
Cheng Zhong, after that batteries of battery power discharge to minimum voltage arrives under-voltage protection electrical voltage point, due to
Set of cells Global Macros and make the dump energy of other batteries to use.And partial volume screening also can
The cell making a part to match becomes extra battery, it is difficult to uses and increases electricity
Pond composition is originally.The set of cells of active equalization technology is used, it is possible to achieve the energy between battery on market
Amount transfer, but the circuit of active equalization technology is complicated, and reliability is low, the merit that active equalization is transmitted
Rate is less, inefficient, and cost is the highest, is therefore difficult to answer with universal in major part set of cells
With.
Utility model content
The purpose of this utility model is to overcome above-mentioned weak point of the prior art to provide one
Plant the battery series connection redundancy structure that can discharge battery electric quantity completely of life-span length, low cost.
This utility model realizes in the following way:
A kind of battery series connection redundancy structure that can discharge battery electric quantity completely, it is characterised in that: bag
Include the set of cells 1 of N+1 battery unit circuit connected in series composition, battery voltage testing circuit 2,
Battery switch control circuit 3, wherein: N >=1；Described battery voltage testing circuit 2 and electricity
Pond group ON-OFF control circuit 3 is connected；Described set of cells 1 respectively with battery voltage testing circuit
2 are connected with battery switch control circuit 3；
After each battery unit circuit is connected with a switch 12 by a cell 11, then with
One diode 13 is in parallel to be constituted, the positive-negative polarity direction of diode 13 and cell time in parallel
The positive-negative polarity of 11 is in opposite direction, and switch 12 is connected on the negative or positive electrode of cell 11；N+1
Individual cell 11 is parallel with one another.
The beneficial effects of the utility model are: the combinations of pairs requirement to the screening of cell partial volume
With the presence of the cell that cannot match, thus battery cost can will not be decreased with non-constant width,
And the electricity of cells all in set of cells can all be discharged by the method, make set of cells
Energy is fully exploited, and achieves equalization discharge, and it the most also makes set of cells have redundancy merit
Can, when set of cells there being monomer battery core lost efficacy, the method can also by inefficacy cell every
Separating out set of cells, make set of cells can continue normal powering load, improve set of cells can
By property, too increase the safety of set of cells.
Accompanying drawing explanation
Fig. 1 this utility model structural representation.
Detailed description of the invention
In conjunction with accompanying drawing in detail, this utility model detailed description of the invention is described in detail:
As it is shown in figure 1, a kind of battery series connection redundancy structure that can discharge battery electric quantity completely, bag
Include the set of cells 1 of N+1 battery unit circuit connected in series composition, battery voltage testing circuit 2,
Battery switch control circuit 3, wherein: N >=1；Battery voltage testing circuit 2 and set of cells
ON-OFF control circuit 3 is connected；Set of cells 1 respectively with battery voltage testing circuit 2 and battery
Group ON-OFF control circuit 3 is connected；Each battery unit circuit is by a cell 11 and
After the series connection of individual switch 12, then in parallel with diode 13 constitute, diode 13 during parallel connection
Positive-negative polarity direction is in opposite direction with the positive-negative polarity of cell 11, and switch 12 is connected on monomer
The negative or positive electrode of battery 11；N+1 cell 11 is parallel with one another；Needed for load supplying
Cell 11 joint number be N joint time, battery unit circuit then with N+1 joint battery unit electricity
Way amount is connected；Battery voltage testing circuit 2 is to often saving cell 11 in set of cells 1
Voltage detect in real time, battery switch control circuit 3 is according to the cell 11 detected
Voltage, adjusts the control of switch 12 in real time, makes the switch 12 of the battery unit circuit that voltage is minimum
Being off, the switch 12 in other N batteries element circuit is in Guan Bi conducting state,
Under set of cells 1 is connected to loading condition, in the battery unit circuit that this voltage is minimum in parallel two
Pole pipe 13 can be in forward afterflow conducting after the switch 12 visiting batteries element circuit disconnects automatically
State, the output voltage of set of cells 1 is always the higher N of voltage and saves cell 11 series electrical
Pressure.
This utility model switch 12 can replace by field effect transistor；Diode 13 can be imitated with use
Should replace by pipe；Described switch 12 and diode 13 can be with single-pole double-throw switch (SPDT)s or to have hilted broadsword double
The relay of throw switch function replaces.
During powering load, battery voltage testing circuit 2 persistently detects set of cells 1
In often save the voltage of cell 11, battery switch control circuit 3 is according to the monomer detected
Battery 11 voltage controls to switch the adjustment of 12, makes in each time period in set of cells 1 voltage
The switch 12 of low cell 11 is off, and other cell 11 is then in leads
Logical series connection is come load supplying (electric discharge), and the supply voltage now loaded is the N of high voltage
Voltage after joint cell 11 series connection；Due to the set of cells 1 each moment in discharge process
It is all preferentially to discharge with the N joint cell 11 that voltage is higher, can immediately switch to participate in and put
The cell 11 of electricity, as long as cell 11 carrying capacity minima is more than maximum in set of cells 1
(N-1) times of value and intermediate mean values difference, i.e. Cmin > (Cmax-C is average) * (N-1), (example
As, set of cells is 10 joint discharged in series, uses 11 battery units, and cell carrying capacity is
Greatly 42AH, minima is 18AH, and other average carrying capacity of several joints is 40AH), in set of cells 1
When having discharged, in set of cells, the electricity of each cell 11 of 1 can be vented, and makes to own
The electricity of cell 11 is discharged completely.And work as certain cell 11 in set of cells 1 and go out
During existing fault (such as certain joint cell 11 internal short-circuit or open circuit), the method can also be real-time
The cell 11 of open failure, is saved cell 11 series-fed by other, and supply voltage is still
It is so that normal N batteries is connected 11 voltages, thus ensure that reliability and the peace of set of cells 1
Quan Xing.
Claims (1)
1. the battery series connection redundancy structure that can discharge battery electric quantity completely, it is characterised in that: bag
Include the set of cells (1) of N+1 battery unit circuit connected in series composition, battery voltage testing circuit (2),
Battery switch control circuit (3), wherein: N >=1；Described battery voltage testing circuit (2)
It is connected with battery switch control circuit (3)；Described set of cells (1) is electric with set of cells respectively
Pressure testing circuit (2) is connected with battery switch control circuit (3)；
After each battery unit circuit is connected with a switch (12) by a cell (11),
Again with diode (13) composition in parallel, the positive-negative polarity direction of diode (13) time in parallel
In opposite direction with the positive-negative polarity of cell (11), switch (12) is connected on cell (11)
Negative or positive electrode；N+1 cell (11) is parallel with one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070785.4U CN205544384U (en) | 2016-01-25 | 2016-01-25 | A series of cells redundancy structure of group battery electric quantity can release completely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070785.4U CN205544384U (en) | 2016-01-25 | 2016-01-25 | A series of cells redundancy structure of group battery electric quantity can release completely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544384U true CN205544384U (en) | 2016-08-31 |
Family
ID=56769344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620070785.4U Expired - Fee Related CN205544384U (en) | 2016-01-25 | 2016-01-25 | A series of cells redundancy structure of group battery electric quantity can release completely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205544384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704974A (en) * | 2016-12-29 | 2017-05-24 | 湖南邦普报废汽车循环有限公司 | Solar street lamp capable of achieving power battery cascade utilization and battery working method thereof |
| CN107732127A (en) * | 2017-10-24 | 2018-02-23 | 刘永红 | A kind of detachable battery pack with electricity monitoring |
-
2016
- 2016-01-25 CN CN201620070785.4U patent/CN205544384U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704974A (en) * | 2016-12-29 | 2017-05-24 | 湖南邦普报废汽车循环有限公司 | Solar street lamp capable of achieving power battery cascade utilization and battery working method thereof |
| CN106704974B (en) * | 2016-12-29 | 2023-11-03 | 湖南邦普汽车循环有限公司 | Solar street lamp with power battery utilized in echelon and battery working method thereof |
| CN107732127A (en) * | 2017-10-24 | 2018-02-23 | 刘永红 | A kind of detachable battery pack with electricity monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20220125 |