CN102723750A - Hybrid packing type power battery pack - Google Patents
Hybrid packing type power battery pack Download PDFInfo
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- CN102723750A CN102723750A CN2012101349951A CN201210134995A CN102723750A CN 102723750 A CN102723750 A CN 102723750A CN 2012101349951 A CN2012101349951 A CN 2012101349951A CN 201210134995 A CN201210134995 A CN 201210134995A CN 102723750 A CN102723750 A CN 102723750A
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Abstract
The invention provides a hybrid packing type power battery pack, which comprises N groups of single batteries and e groups of parallel elements, wherein each group of single batteries is provided with M single batteries which are sequentially connected in series; N and M are integers of not less than 2; e groups of parallel elements have at least two different types; each group of parallel elements is provided with (M-1) parallel elements; a first end of an i-th parallel element in an e-th group of parallel elements is connected between an i-th single battery and an (i+1)-th single battery in an e-th group of single batteries in an N-th group of single batteries; and a second end of the i-th parallel element in the e-th group of parallel elements is connected between the i-th single battery and the (i+1)-th single battery in an (e+1)-th group of single batteries, and N groups of single batteries are connected in parallel by a plurality of parallel elements. The hybrid packing type power battery pack provided by the invention is high in safety and high in reliability and can accurately manage each single battery.
Description
Technical field
The present invention relates to the power battery technology field, particularly a kind of mixing is the type power battery pack in groups.
Background technology
Along with the continuous increase of automobile pollution, the energy and problem of environment highlight day by day, and especially global petroleum resources are exhausted day by day, and various countries have also released more and more harsh Abgasgesetz, and under such background, the development new-energy automobile is imperative.Yet in many new-energy automobiles, electric automobile (comprising pure electric automobile and hybrid vehicle) is because power source is extensive, the continuous maturation of battery and motor technology, and embody itself advantage gradually, by increasing people is approved.In order to satisfy demands such as dynamic property and continual mileage; The battery system that uses on the electric automobile requires that voltage is high, capacity is big; And present battery cell voltage, capacity are all more limited; For satisfying the demand of real vehicle, employed power battery pack need be formed by many cell connection in series-parallel on the automobile.Compare with single battery cell, battery has increased many new problems after in groups, comprises the aspects such as durability of fail safe, the inconsistency between the battery cell and the battery pack of battery system.In order to address these problems, not only need use advanced battery management system and algorithm, also need adopt rational electrokinetic cell configuration in groups.
Current driving force battery main flow configuration in groups is parallel connection back series connection earlier and series connection back parallel connection earlier.(1) earlier the string back and configuration: battery cell is together in series with the negligible lead of resistance becomes the series arm of a suitable total voltage earlier, then several series arms is together in parallel through the negligible lead of resistance and receives on the car load power bus.Such configuration reliability is relatively poor, but the voltage that is beneficial to each batteries of battery management system collection is accurately to manage.(2) configuration of elder generation and back string: formerly on behind the string and the configuration basis, adopt the negligible lead of resistance, all battery cells are together in parallel as parallelly connected element.Adopt lead as parallelly connected element, reliability is higher, helps the balanced certainly of battery pack, be to use more configuration at present, but under the battery short circuit failure conditions, the battery pack fail safe is relatively poor.The resistance that certain resistance also once occurred using is as the battery of parallelly connected element scheme in groups; All battery cells are together in parallel; Scheme in groups like this; Owing to has increased the effectively short circuit current under the limit battery short circuit failure conditions of resistance, thereby helped the fail safe of battery pack, but its battery pack is often relatively poor from portfolio effect.
By on can know that traditional power battery group technology exists that reliability is low, poor stability and from shortcomings such as portfolio effect differences.
Summary of the invention
The object of the invention is intended to solve at least one of above-mentioned technological deficiency.
For this reason, the objective of the invention is to propose a kind of mixing type power battery pack in groups, it is good that this mixes type power battery pack fail safe in groups, and reliability is high, and can accurately manage each batteries monomer.
For achieving the above object; The embodiment of the invention discloses a kind of mixing type power battery pack in groups; Comprise: cell, said cell are divided into the N group, and each group cell has M cell; The M of each a group cell is connected successively, and wherein N and M are the integer more than or equal to 2; And parallelly connected element; Said parallelly connected element is divided into the e group and comprises at least two kinds of different types; Each is organized parallelly connected element and has M-1 parallelly connected element; First end that e organizes i the parallelly connected element in the parallelly connected element is connected between in the e group cell in the said N group i and i+1 the cell, and e second end of organizing i parallelly connected element in the parallelly connected element is connected between in the e+1 group cell i and i+1 the cell, and is parallelly connected through said a plurality of parallelly connected elements said N is organized cell; Wherein e is more than or equal to 1 and less than the integer of N, and i is more than or equal to 1 and less than the integer of M.
According to the mixing of embodiment of the invention type power battery pack in groups; Through adopting two kinds or two or more parallelly connected elements; In the hope of the comprehensive advantage of different parallelly connected elements, overcome every kind of parallelly connected element shortcoming separately, thus reasonably that battery cell is in groups integrated.Power battery pack security performance in groups is good, and reliability is high, and can save cell to each and carry out accurate state estimation, failure diagnosis and management.
In one embodiment of the invention, said mixing in groups the parallelly connected element in the type power battery pack be at least two kinds in lead, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and the inductance.
Thus, one of parallelly connected element is the power battery pack of fuse, can improve the adverse effect that battery cell lost efficacy battery pack is caused widely, and the fail safe of battery pack has obtained further raising.
In one embodiment of the invention, said gate-controlled switch is one of electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor Mosfet, triode, insulated gate bipolar transistor IGBT and relay.
Adopting gate-controlled switch is the power battery pack of one of parallelly connected element, and according to different working conditions and purpose, reasonably the opening and turn-offing of control switch of battery management system reaches best management and control.
In one embodiment of the invention, said mixing in groups in the type power battery pack M cell in each group connect successively through lead.
In one embodiment of the invention; The said mixing positive pole of the 1st cell in the said N group cell in the type power battery pack in groups all links to each other with first bus through lead, and the negative pole that said N organizes M interior battery of cell all links to each other with second bus through lead.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is according to the mixing of the embodiment of the invention structural representation of type power battery pack in groups;
Fig. 2 is for according to parallelly connected element in the embodiment of the invention being the mixing structural representation of type power battery pack in groups of resistance and lead; With
Fig. 3 is for according to parallelly connected element in the embodiment of the invention being the mixing structural representation of type power battery pack in groups of resistance and fuse.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
Disclosing of hereinafter provides many various embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts and the setting of specific examples are described.Certainly, they only are example, and purpose does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself not indicate the relation between various embodiment that discuss of institute and/or the setting.In addition, various specific technology and the examples of material that the invention provides, but those of ordinary skills can recognize the property of can be applicable to of other technologies and/or the use of other materials.In addition; First characteristic of below describing second characteristic it " on " structure can comprise that first and second characteristics form the embodiment of direct contact; Can comprise that also additional features is formed on the embodiment between first and second characteristics, such first and second characteristics possibly not be direct contacts.
In description of the invention, need to prove, unless otherwise prescribed and limit; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, with these and other aspects of knowing embodiments of the invention.These describe with accompanying drawing in, some specific implementations in the embodiments of the invention are specifically disclosed, represent some modes of principle of the embodiment of embodiment of the present invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise and fall into appended spirit that adds the right claim and all changes, modification and the equivalent in the intension scope.
Describe according to the mixing of embodiment of the invention type power battery pack in groups referring to figs. 1 to Fig. 3 below.
As shown in Figure 1, the mixing that the embodiment of the invention provides type power battery pack in groups comprises: organize cell 101 and many group parallelly connected elements 105 and 106 more.Wherein, cell 101 can be divided into the N group, and each group cell has M cell 101, and the M of each a group cell 101 is connected successively, and wherein N and M are the integer more than or equal to 2; The parallel connection element is divided into the e group and comprises at least two kinds of different types; Each is organized parallelly connected element and has M-1 parallelly connected element; First end that e organizes i the parallelly connected element in the parallelly connected element is connected between in the e group cell in the N group i and i+1 the cell; And second end that e organizes i the parallelly connected element in the parallelly connected element is connected between in the e+1 group cell i and i+1 the cell; With through a plurality of parallelly connected elements 105 and 106 with 101 parallel connections of above-mentioned N group cell, wherein e is more than or equal to 1 and less than the integer of N, i is more than or equal to 1 and less than the integer of M.
In one embodiment of the invention, as shown in Figure 1, above-mentioned mixing in groups in the type power battery pack M cell in each group 101 pass through lead 102 and connect successively, the resistance of lead 102 can be ignored.
In one embodiment of the invention, as shown in Figure 1, the above-mentioned mixing positive pole of type power battery pack in groups links to each other with first bus 103 through lead 102, and negative pole links to each other with second bus 104 through lead 102.Wherein, the resistance of lead 102 can be ignored.
Particularly, as shown in Figure 1 in one embodiment of the invention, above-mentioned mixing is the M=8 in the type power battery pack in groups, N=4, e=3, i=7.
The mixing that provides according to the embodiment of the invention is the type power battery pack in groups; Through adopting two kinds or two or more parallelly connected elements; In the hope of the comprehensive advantage of different parallelly connected elements, overcome every kind of parallelly connected element shortcoming separately, thus reasonably that battery cell is in groups integrated.This mixes in groups the type power battery pack and can prevent to cause with it owing to short trouble appears in a batteries monomer wherein that batteries in parallel connection has been improved security performance greatly by short circuit; Can also prevent simultaneously owing to a batteries monomer occur open circuit fault cause other with it series connected battery can't continue operate as normal, so reliability is higher.In addition, battery management system can be monitored the terminal voltage of each joint cell accurately, and then each joint cell is carried out accurate state estimation, failure diagnosis and management, and this power battery pack also has reasonably from equalization function.
In one embodiment of the invention, above-mentioned mixing in groups the parallelly connected element in the type power battery pack be at least two kinds in lead, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and the inductance.
In one embodiment of the invention; Above-mentioned gate-controlled switch is electromagnetic switch, Mosfet (Metal-Oxide-Semiconductor Field-Effect Transistor; Metal-oxide layer-semiconductor-field-effect transistor), one of triode, IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) and relay.
Be that to be example describe mixing in groups the type power battery pack for resistance and lead with reference to figure 2 with parallelly connected element 105 below.
As shown in Figure 2, the mixing that the embodiment of the invention provides type power battery pack in groups comprises: 32 joint 201,10 leads 202 of 101,11 resistance of cell and some leads 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 through lead 102 successively.It is 3 groups that 11 resistance 201 and 10 leads 202 are divided into, every group all between two adjacent Battery pack monomers and two ends be connected in corresponding two groups of cells between the two corresponding joint cells 101.First group of parallel connection element is 4 resistance 201 and 3 leads 202; Wherein 3 leads 202 are positioned at 4 resistance 201 between any two successively; Second group of parallel connection element is 3 resistance 201 and 4 leads 202; Wherein 3 resistance 201 are positioned at 4 leads 202 between any two successively, and the 3rd group identical with first group.According to above connected mode, 4 groups of cells are parallelly connected through 11 resistance 201 and 10 leads 202.In addition, the positive pole of this power battery pack links to each other with first bus 103 through lead 102, and negative pole links to each other with second bus 104 through lead 102, and wherein the resistance of lead 102 and lead 202 can be ignored.
According to the mixing of embodiment of the invention type power battery pack in groups, adopt lead 202 as parallelly connected element, it is good that its advantage is from portfolio effect, and a certain therein batteries monomer opens circuit the reliability of power battery pack under the situation about losing efficacy than higher.And adopt resistance 201 as parallelly connected element; Its advantage is; Play metering function under the situation that a certain therein batteries monomer short circuit was lost efficacy; The fail safe of battery pack is relatively good, and battery management system can collect the terminal voltage of each batteries monomer, thereby help management system each batteries monomer is done accurate state estimation, failure diagnosis and optimum management.
The mixing that provides according to the embodiment of the invention is the type power battery pack in groups, has comprehensively adopted resistance and lead as parallelly connected element, and has reasonably arranged its position, and advantage that can comprehensive two kinds of parallelly connected elements overcomes its shortcoming separately.Therefore; According to the mixing of embodiment of the invention type power battery pack in groups; Good from portfolio effect, power battery pack can not receive king-sized influence under the battery short circuit inefficacy and the failure conditions that opens circuit, and its reliability and fail safe have all obtained guarantee; And the corresponding battery management system also can independently collect the terminal voltage of each batteries monomer, helps management system each batteries monomer is done accurate state estimation, failure diagnosis and optimum management.
Be that to be example describe mixing in groups the type power battery pack for resistance and fuse with reference to figure 3 with parallelly connected element 105 below.
As shown in Figure 3, the mixing that the embodiment of the invention provides type power battery pack in groups comprises: 32 joint 201,9 fuses 301 of 101,12 resistance of cell and some leads 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 through lead 102 successively.It is 3 groups that 12 resistance 201 and 9 fuses 301 are divided into, every group all between two adjacent Battery pack monomers and two ends be connected in corresponding two groups of cells between the two corresponding joint cells 101.Each organizes parallelly connected element is 4 resistance 201 and 3 fuses 301, and wherein 3 fuses 301 are positioned at 4 resistance 201 between any two successively.According to above connected mode, 4 groups of cells are parallelly connected through 12 resistance 201 and 9 fuses 301.In addition, the positive pole of this power battery pack links to each other with first bus 103 through lead 102, and negative pole links to each other with second bus 104 through lead 102, and wherein the resistance of lead 102 can be ignored.
According to the mixing of embodiment of the invention type power battery pack in groups; Adopt resistance 201 as parallelly connected element; Its advantage is, plays metering function under the situation that a certain therein batteries monomer short circuit was lost efficacy, and the fail safe of battery pack is relatively good; And battery management system can collect the terminal voltage of each batteries monomer, thereby help management system each batteries monomer done accurate state estimation, failure diagnosis and optimum management.And adopt fuse 301 is parallelly connected element; Under a certain batteries monomer is short-circuited situation about losing efficacy; Several relevant fuses can fuse in time, thereby protection whole power battery group can be improved the adverse effect that battery cell lost efficacy power battery pack is caused well.
The mixing that provides according to the embodiment of the invention is the type power battery pack in groups, has comprehensively adopted resistance and fuse as parallelly connected element, and has reasonably arranged its position, and advantage that can comprehensive two kinds of parallelly connected elements overcomes its shortcoming separately.Therefore; Power battery pack according to the embodiment of the invention; Power battery pack can not receive king-sized influence under the battery short circuit failure conditions; Its fail safe has obtained guarantee, and the corresponding battery management system also can independently collect the terminal voltage of each batteries monomer, helps management system each batteries monomer is done accurate state estimation, failure diagnosis and optimum management.Be easy to generate at battery under the situation of short circuit inefficacy, should adopt such configuration.
Therefore; Above-mentioned mixing in groups the parallelly connected element in the type power battery pack no matter be at least two kinds that adopt in the controlled electron devices such as electromagnetic switch, relay, triode, metal-oxide layer-semiconductor-field-effect transistor Mosfet, insulated gate bipolar transistor IGBT; Still adopt at least two kinds in the uncontrollable electronic devices such as resistance, fuse, diode, voltage stabilizing didoe, inductance; Perhaps two electron-like devices all adopt, and all possess advantage separately.For example, inductance is as parallelly connected element, can absorption current impact, and it is slowly released again, has certain current limitation effect, and energy can not become heat energy and distributes.Some controlled electron components and parts such as metal-oxide layer-semiconductor-field-effect transistor Mosfet, insulated gate bipolar transistor IGBT, triode, relay etc.; The data that collect according to battery management system; Through certain analysis and calculating; In appropriate or necessary, change the configuration of power battery pack or control the euqalizing current size, reach desirable effect.In the reality, should combine actual battery monomer characteristic and actual demand, choose different parallelly connected elements, carry out in groups, just can reach best power source battery effect in groups battery cell.
In addition; Mixing in groups the type electrokinetic cell in groups the time; Also can be according to actual conditions; Though configuration is constant, utilize parallelly connected element parallel connection some batteries monomers to desired volume to form a parallel branch/module earlier, then that several are such parallel branch/module is in series to required voltage and accomplishes in groups.Particularly, a plurality of battery cells are connected in parallel to form a battery pack parallel branch through a plurality of parallelly connected elements, wherein, adjacent battery cell is in parallel through a parallelly connected element, and the capacity of each battery pack parallel branch is a preset capacity; Make up a plurality of battery pack parallel branches; And a plurality of battery pack parallel branches are connected to form electrokinetic cell, wherein, the voltage that electrokinetic cell provides satisfies predeterminated voltage.Also can be with reference to other complicated order or logic in groups of this configured.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.
Claims (5)
1. one kind is mixed type power battery pack in groups, it is characterized in that, comprising:
Cell, said cell are divided into the N group, and each group cell has M cell, and the M of each a group cell is connected successively, and wherein N and M are the integer more than or equal to 2; With
The parallel connection element; Said parallelly connected element is divided into the e group and comprises at least two kinds of different types; Each is organized parallelly connected element and has M-1 parallelly connected element; First end that e organizes i the parallelly connected element in the parallelly connected element is connected between in the e group cell in the said N group i and i+1 the cell, and e second end of organizing i parallelly connected element in the parallelly connected element is connected between in the e+1 group cell i and i+1 the cell, and is parallelly connected through said a plurality of parallelly connected elements said N is organized cell; Wherein e is more than or equal to 1 and less than the integer of N, and i is more than or equal to 1 and less than the integer of M.
2. mixing as claimed in claim 1 is the type power battery pack in groups, it is characterized in that, said parallelly connected element is at least two kinds in lead, gate-controlled switch, resistance, fuse, diode, voltage stabilizing didoe and the inductance.
3. mixing as claimed in claim 2 is the type power battery pack in groups, it is characterized in that, said gate-controlled switch is one of electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor Mosfet, triode, insulated gate bipolar transistor IGBT and relay.
4. mixing as claimed in claim 1 is the type power battery pack in groups, it is characterized in that, M cell in each group connected through lead successively.
5. like each described mixing of claim 1-4 type power battery pack in groups; It is characterized in that; The positive pole of the 1st cell in the said N group cell all links to each other with first bus through lead, and the negative pole of M battery in the said N group cell all links to each other with second bus through lead.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101349951A CN102723750A (en) | 2012-05-02 | 2012-05-02 | Hybrid packing type power battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101349951A CN102723750A (en) | 2012-05-02 | 2012-05-02 | Hybrid packing type power battery pack |
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| CN102723750A true CN102723750A (en) | 2012-10-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406015A (en) * | 2015-06-02 | 2016-03-16 | 重庆大学 | Power battery packs connected in series to form group |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7573233B1 (en) * | 2005-11-28 | 2009-08-11 | Quallion Llc | Battery system configured to survive failure of one or more batteries |
| WO2012053292A1 (en) * | 2010-10-20 | 2012-04-26 | ソニー株式会社 | Battery pack, method for charging/discharging same, and power consumption device |
-
2012
- 2012-05-02 CN CN2012101349951A patent/CN102723750A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7573233B1 (en) * | 2005-11-28 | 2009-08-11 | Quallion Llc | Battery system configured to survive failure of one or more batteries |
| WO2012053292A1 (en) * | 2010-10-20 | 2012-04-26 | ソニー株式会社 | Battery pack, method for charging/discharging same, and power consumption device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406015A (en) * | 2015-06-02 | 2016-03-16 | 重庆大学 | Power battery packs connected in series to form group |
| CN105406015B (en) * | 2015-06-02 | 2018-06-19 | 重庆大学 | A kind of type power battery pack in groups of connecting |
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Application publication date: 20121010 |