CN102723454B - Fly line grouping typed power battery pack - Google Patents
Fly line grouping typed power battery pack Download PDFInfo
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- CN102723454B CN102723454B CN201210135441.3A CN201210135441A CN102723454B CN 102723454 B CN102723454 B CN 102723454B CN 201210135441 A CN201210135441 A CN 201210135441A CN 102723454 B CN102723454 B CN 102723454B
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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 discloses a fly line grouping typed power battery pack. The power battery pack of the invention comprises N groups of single batteries and parallel connection components, wherein each group of single batteries includes M single batteries, a one-to-one correspondence relationship exists between single batteries of two adjacent groups, and the M single batteries in each group are connected in series in sequence. One end of at least one parallel connection component is connected between two adjacent single batteries of one group of single batteries of the N groups and a second end is connected to at least one other group of single batteries, and the other end of a plurality of the parallel connection components which are connected between all the two adjacent single batteries of the same group is connected between two adjacent single batteries of at least two other groups of single batteries, so that the N groups of single batteries are connected in parallel by the plurality of the parallel connection components. A one-to-one correspondence relationship exists between two adjacent single batteries of one group and two adjacent single batteries of another group. The fly line grouping typed power battery pack of the invention has the advantages of good security and high reliability. Besides, precise management can be carried out on each single battery.
Description
Technical field
The present invention relates to power battery technology field, particularly a kind of fly line type power battery pack in groups.
Background technology
At present, major part automobile primary will using the internal combustion engine such as diesel engine or gasoline engine as power source, but along with Global Oil resource day by day exhausted, the environmental problems such as greenhouse effect are further severe, each state payes attention to the problem of the energy and environment all further, and is proposed more and more harsh Abgasgesetz, therefore, in this context, new-energy automobile must be greatly developed.Wherein, electric automobile (comprising pure electric automobile and hybrid vehicle etc.) due to energy source extensive, battery and motor technology all comparative maturities, become the mainstream development direction of present new-energy automobile, obtain most people accreditation.In order to meet the demand such as dynamic property, continual mileage of car load, the battery system that electric automobile uses must have the capacity that sufficiently high voltage is high and enough large, and present battery cell voltage, capacity are all more limited.In order to meet the demand of real vehicle, needing in groups integrated for many cell connection in series-parallel, thus being built into the power battery pack meeting car load demand.Compared with single battery cell, battery adds many new problems in groups afterwards, comprises the aspects such as the durability of inconsistency between the fail safe of battery system, battery cell and battery pack.In order to address these problems, not only need to use advanced battery management system and algorithm, also needing to adopt rational electrokinetic cell configuration in groups
Existing electrokinetic cell in groups configuration is connected after having first parallel connection and latter two kinds in parallel of first series connection.First after string and configuration be the series arm of a composition suitable total voltage of first negligible for battery cell resistance wired in series being got up, then several series arms got up by the negligible conductor in parallel of resistance and receive in car load power bus, although such configuration is beneficial to battery management system and gathers the voltage of each batteries to carry out accurate battery management, but the reliability of battery pack is poor, have a batteries monomer open circuit then place series arm all cannot continue export.Therefore, present main flow configuration be first and after go here and there, namely formerly go here and there on rear also configuration basis, adopt the negligible wire of resistance as parallel element, all position in parallel adjacent cell monomers are coupled together, such configuration battery pack reliability is higher, but poor stability under battery short circuit failure conditions, and be unfavorable for that battery management system carries out accurate management to battery pack.
As from the foregoing, traditional power battery group technology have that reliability is low, poor stability and being unfavorable for shortcomings such as the accurate management of battery cell.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, the object of the invention is to propose a kind of fly line type power battery pack in groups, this fly line in groups type power battery pack fail safe is good, and reliability is high, and accurately can manage each batteries monomer.
For achieving the above object, the embodiment of the invention discloses a kind of fly line type power battery pack in groups, comprise: cell, described cell is divided into N group, each group cell has M cell, cell one_to_one corresponding in two adjacent groups cell, M cell of each group is connected successively, and wherein N and M is the integer being more than or equal to 2, and parallel element, to be connected with one end of at least one parallel element between adjacent two cells in one group of cell in described N group and the second end of at least one parallel element described is connected at least that another organizes between two neighboring unit cell in cell, , and and the other end of the multiple parallel element be connected between all adjacent two cells of same group of cell be connected between adjacent two cells of at least other two groups of cells, with described N group cell is in parallel by described multiple parallel element, described two neighboring unit cell in wherein said one group of cell and described another organize described two neighboring unit cell one_to_one corresponding in cell.
According to the fly line type power battery pack in groups of the embodiment of the present invention, by fly line configuration in groups, comprehensive first and after rear string and first string and the advantage of these two groups of existing batteries configuration in groups, overcome its shortcoming, reasonably that battery cell is in groups integrated.This fly line in groups type power battery pack to have security performance good, reliability is high, strong and can save cell to each and carry out the advantages such as accurate state estimation, failure diagnosis and management from equalization function.
In one embodiment of the invention, the parallel element of described fly line in groups in type power battery pack is at least one in wire, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and inductance.
Adopt fuse to be the power battery pack of parallel element, can improve battery cell widely and to lose efficacy the adverse effect caused battery pack, the fail safe of battery pack obtains further raising.
In one embodiment of the invention, described gate-controlled switch is electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor Mosfet, triode, one of insulated gate bipolar transistor IGBT and relay.
Adopt gate-controlled switch to be the power battery pack of parallel element, according to different operating modes and object, battery management system can reasonably the opening and turning off of control switch, and reaches management and the control of optimum.
In one embodiment of the invention, M cell in described fly line each group in groups in type power battery pack is connected successively by wire.
In one embodiment of the invention, the positive pole of the 1st cell in described N group cell is all connected with the first bus by wire, and the negative pole of M cell in described N group cell is all connected with the second bus by wire.
In one embodiment of the invention, when being connected with one end of multiple parallel element between adjacent two cells in described one group of cell, the second end of described multiple parallel element is connected between two neighboring unit cell of different group.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the structural representation according to the fly line of embodiment of the present invention type power battery pack in groups;
Fig. 2 is the structural representation of the fly line type power battery pack being in groups wire according to parallel element in the embodiment of the present invention; With
Fig. 3 is the structural representation of the fly line type power battery pack being in groups resistance according to parallel element in the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Below with reference to Fig. 1 to Fig. 3, the fly line type power battery pack in groups according to the embodiment of the present invention is described.
As shown in Figure 1, the fly line that provides of the embodiment of the present invention in groups type power battery pack comprise: many group cells 101 and many group parallel element 105.Wherein, cell 101 is divided into N group, and each group cell has M cell 101, the cell one_to_one corresponding in two adjacent groups cell, and M cell 101 of each group is connected successively, and wherein N and M is the integer being more than or equal to 2.In addition, to be connected with one end of at least one parallel element 105 between adjacent two cells 101 in one group of cell in N group and the second end of at least one parallel element 105 is connected at least that another organizes between two neighboring unit cell 101 in cell, and and the other end of the multiple parallel element be connected between all adjacent two cells of same group of cell be connected between adjacent two cells of at least other two groups of cells, with by multiple parallel element 105 by the parallel connection of N group cell, two neighboring unit cell 101 wherein in one group of cell organize two neighboring unit cell 101 one_to_one corresponding in cell with another.As shown in Figure 1 or 2, in a concrete example of the present invention, if when being connected with one end of a parallel element between adjacent two cells of any Battery pack group of N Battery pack group, then the other end of this parallel element only with between corresponding two cells in the other one group of cell in remaining power group is connected, and to be connected with one end of a parallel element between adjacent two cells ensureing each cell organize.
As shown in Figure 3, in another example of the present invention, if connect multiple parallel element between adjacent two cells of any Battery pack group of N Battery pack group, it is for any Battery pack group, the quantity of the tie point between its adjacent two battery pack should be N-1, and and the other end of N-1 the parallel element connected between adjacent two cells of this battery pack to ensure to be connected between the corresponding neighboring unit cell of different battery pack.
In one embodiment of the invention, as shown in Figure 1, M the cell 101 of above-mentioned fly line in groups in type power battery pack in each group is connected successively by wire 102, and the resistance of wire 102 is negligible.
In one embodiment of the invention, as shown in Figure 1, the positive pole of above-mentioned fly line type power battery pack is in groups connected with the first bus 103 by wire 102, and negative pole passes through wire 102 and is connected with the second bus 104.Wherein, the resistance of wire 102 is negligible.
Specifically, in one embodiment of the invention, as shown in Figure 1, the M=8 of above-mentioned fly line in groups in type power battery pack, N=4.
According to the fly line type power battery pack in groups of the embodiment of the present invention, by fly line configuration in groups, comprehensive first and after rear string and first string and the advantage of these two groups of existing batteries configuration in groups, overcome its shortcoming, reasonably that battery cell is in groups integrated.Therefore, this fly line in groups type power battery pack can prevent from, because wherein a batteries monomer occurs short trouble and causes batteries in parallel connection to be with it shorted, substantially increasing security performance; Can also prevent the battery causing other to connect with it because open circuit fault appears in a batteries monomer from cannot continue normal work, therefore reliability is higher simultaneously.In addition, battery management system can monitor the terminal voltage of each joint cell accurately, and then carries out accurate state estimation, failure diagnosis and management to each joint cell, and this power battery pack also has reasonably from equalization function.
In one embodiment of the invention, the parallel element 105 of above-mentioned fly line in groups in type power battery pack is at least one in wire, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and inductance.
In one embodiment of the invention, the gate-controlled switch of above-mentioned fly line in groups in type power battery pack is electromagnetic switch, Mosfet(Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide layer-semiconductor-field-effect transistor), triode, IGBT(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) and one of relay.
Adopt gate-controlled switch to be the fly line type power battery pack in groups of parallel element, according to different operating modes and object, battery management system can reasonably the opening and turning off of control switch, and reaches management and the control of optimum.
In one embodiment of the invention, when being connected with one end of multiple parallel element between adjacent two cells in one group of cell, the second end of multiple parallel element is connected between two neighboring unit cell of different group.
Below with reference to Fig. 2 take wire as parallel element for example to fly line in groups type power battery pack be described.
As shown in Figure 2, according to the fly line of the embodiment of the present invention in groups type power battery pack comprise: 32 joint cell 101,14 wires 201 and some wires 102.Wherein, 32 joint cells 101 are divided into 4 groups, and each group has 8 cells 101, and 8 cells 101 of each group are connected successively by wire 102; 14 wires 201 are divided into 4 groups, first group and the 3rd group all comprise 201, second group, 4 wires and the 4th group all comprise 3 wires 201.
Specifically, as shown in Figure 2, the two ends of the 1st wire 201 in first group to be connected in first group of cell and second group of cell between the 1st, 2 cell 101, first group 4 wires 201 are connected between first group and second group of cell by spaced apart connection successively.The two ends of the 1st wire 201 in second group to be connected in second group of cell and the 3rd group of cell between the 2nd, 3 cell 101, second group 3 wires 201 are connected between second group and the 3rd group of cell by spaced apart connection successively.The two ends of the 1st wire 201 in the 3rd group to be connected in the 3rd group of cell and the 4th group of cell between the 1st, 2 cell 101,4 wires 201 of the 3rd group are connected between the 3rd group and the 4th group of cell by spaced apart connection successively.The two ends of the 1st wire 201 in the 4th group to be connected in first group of cell and the 4th group of cell between the 2nd, 3 cell 101,3 wires 201 of the 4th group are connected between first group and the 4th group of cell by spaced apart connection successively.In addition, the positive pole of this fly line type power battery pack is in groups connected with the first bus 103 by wire 102, and negative pole passes through wire 102 and is connected with the second bus 104, and wherein the resistance of wire 102 and wire 201 is negligible.
The fly line that the embodiment of the present invention provides is type power battery pack in groups, adopt wire 201 as parallel element, and parallel element is distributed in whole battery pack regularly, not only can be connected between battery cell adjacent on position in parallel, also some batteries monomers can be skipped, connect non-conterminous battery cell on position in parallel, thus by fly line configuration, battery cell is in groups integrated.Adopt rational fly line configuration in groups, the reliability of battery pack battery pack under portfolio effect and certain batteries monomer open circuit failure conditions can both be improved, and effectively can reduce risk when battery cell short-circuit failure, the fail safe of power battery pack is protected.In addition, battery management system can also collect the terminal voltage of each batteries monomer independently, thus carries out rational state estimation, failure diagnosis and management to each joint monomer.
Below with reference to Fig. 3 take resistance as parallel element for example to fly line in groups type power battery pack be described.
As shown in Figure 3, according to the fly line of the embodiment of the present invention in groups type power battery pack comprise: 12 joint cell 101,6 resistance 301,6 resistance 302 and some wires 102.Wherein, 12 joint cells 101 are divided into 4 groups, and each group has 3 cells 101, and 3 cells 101 of each group are connected successively by wire 102; 6 resistance 301 and 6 resistance 302 are divided into 3 groups respectively, and each group has 2 resistance 301 or 2 resistance 302, and each resistance 301 and each resistance 302 are all between two groups of cells, corresponding distribution.
Specifically, 2 resistance 301 in first group of parallel element are between first group of cell and second group of cell, and one end of resistance is connected in first group between cell 101, the other end of resistance to be connected in second group between cell 101.2 resistance 301 in second group of parallel element are between second group of cell and the 3rd group of cell, and one end of resistance is connected in second group between cell 101, the other end of resistance to be connected in the 3rd group between cell 101.2 resistance 301 in 3rd group of parallel element are between the 3rd group of cell and the 4th group of cell, and one end of resistance is connected in the 3rd group between cell 101, the other end of resistance to be connected in the 4th group between cell 101.2 resistance 302 in 4th group of parallel element are between first group of cell and the 3rd group of cell, and one end of resistance is connected in first group between cell 101, the other end of resistance to be connected in the 3rd group between cell 101.2 resistance 302 in 5th group of parallel element are between first group of cell and the 4th group of cell, and one end of resistance is connected in first group between cell 101, the other end of resistance to be connected in the 4th group between cell 101.2 resistance 302 in 6th group of parallel element are between second group of cell and the 4th group of cell, and one end of resistance is connected in second group between cell 101, the other end of resistance to be connected in the 4th group between cell 101.In addition, the positive pole of this fly line type power battery pack is in groups connected with the first bus 103 by wire 102, and negative pole passes through wire 102 and is connected with the second bus 104, and wherein the resistance of wire 102 is negligible.
According to the fly line type power battery pack in groups of the embodiment of the present invention, using resistance as parallel element, can play metering function when certain batteries monomer is short-circuited and lost efficacy, compared to traditional wire as parallel element, the fail safe of battery pack is relatively good; Meanwhile, battery management system can collect the terminal voltage of each batteries monomer, thus is conducive to management system and does accurate state estimation, failure diagnosis and optimum management to each batteries monomer.And adopt such fly line configuration in groups, in some joint cells of position in parallel, the total resistance of parallel element between any two joint cells is all identical, there is between battery and battery extraordinary symmetry, thus being obtained for from equalization performance and reliability of power battery pack is improved further.
Therefore, no matter the parallel element of above-mentioned fly line in groups in type power battery pack is adopt one of controlled electron devices such as electromagnetic switch, relay, triode, metal-oxide layer-semiconductor-field-effect transistor Mosfet, insulated gate bipolar transistor IGBT, still adopt one of uncontrollable electronic devices such as resistance, fuse, diode, voltage stabilizing didoe, inductance, all possess respective advantage.Such as, inductance, as parallel element, can impact by Absorption Current, and it to be slowly released again, have certain current limitation effect, and energy can not become heat energy distributes.Some controlled electron components and parts are as metal-oxide layer-semiconductor-field-effect transistor Mosfet, insulated gate bipolar transistor IGBT, triode, relay etc., according to the data that battery management system collects, by certain analysis and calculation, in appropriate or necessary, change the configuration of power battery pack or control euqalizing current size, reaching desirable effect.In reality, in conjunction with actual battery monomer characteristic and actual demand, different parallel element should be chosen, carry out by battery cell in groups, just can reach best power source battery unitizing effect.
In addition, electrokinetic cell in groups time, also can according to actual conditions, although configuration is constant, but first utilize parallel element some batteries monomers to desired volume in parallel to form a parallel branch/module, then several such parallel branch/modules are in series to required voltage and complete in groups.Specifically, undertaken being connected in parallel to form a battery pack parallel branch by multiple parallel element by multiple battery cell, wherein, adjacent battery cell is in parallel by a parallel element, and the capacity of each battery pack parallel branch is preset capacity; Build multiple battery pack parallel branch; And multiple battery pack parallel branch is carried out connecting to form electrokinetic cell, wherein, the voltage that electrokinetic cell provides meets predeterminated voltage.Also can with reference to order or the logic in groups of this other complexity of Configuration Design.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (6)
1. a fly line type power battery pack in groups, is characterized in that, comprising:
Cell, described cell is divided into N group, and each group cell has M cell, the cell one_to_one corresponding in two adjacent groups cell, and M cell of each group is connected successively, and wherein N and M is the integer being more than or equal to 2; With
Parallel element, to be connected with one end of at least one parallel element between adjacent two cells in one group of cell in described N group and the second end of at least one parallel element described is connected at least that another organizes between two neighboring unit cell in cell, and and the other end of the multiple parallel element be connected between all adjacent two cells of same group of cell be connected between adjacent two cells of at least other two groups of cells, all to be connected by the non-conterminous branch road of described multiple parallel element by described N group cell, described two neighboring unit cell in wherein said one group of cell and described another organize described two neighboring unit cell one_to_one corresponding in cell.
2. fly line type power battery pack in groups as claimed in claim 1, it is characterized in that, described parallel element is at least one in wire, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and inductance.
3. fly line type power battery pack in groups as claimed in claim 2, it is characterized in that, described gate-controlled switch is electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor Mosfet, triode, one of insulated gate bipolar transistor IGBT and relay.
4. fly line type power battery pack in groups as claimed in claim 1, it is characterized in that, M cell in each group is connected successively by wire.
5. fly line type power battery pack in groups as claimed in claim 1, it is characterized in that, the positive pole of the 1st cell in described N group cell is all connected with the first bus by wire, and the negative pole of M cell in described N group cell is all connected with the second bus by wire.
6. fly line type power battery pack in groups as claimed in claim 1, it is characterized in that, when being connected with one end of multiple parallel element between adjacent two cells in described one group of cell, the second end of described multiple parallel element is connected between two neighboring unit cell of different group.
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| CN201210135441.3A CN102723454B (en) | 2012-05-02 | 2012-05-02 | Fly line grouping typed power battery pack |
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| CN201210135441.3A CN102723454B (en) | 2012-05-02 | 2012-05-02 | Fly line grouping typed power battery pack |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201887440U (en) * | 2010-07-02 | 2011-06-29 | 清华大学 | Power battery pack safety protector |
| CN201975450U (en) * | 2011-02-23 | 2011-09-14 | 河南锂动电源有限公司 | Multi-parallel-connection multi-serial-connection lithium ion battery pack protecting device |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201887440U (en) * | 2010-07-02 | 2011-06-29 | 清华大学 | Power battery pack safety protector |
| CN201975450U (en) * | 2011-02-23 | 2011-09-14 | 河南锂动电源有限公司 | Multi-parallel-connection multi-serial-connection lithium ion battery pack protecting device |
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