CN102723455A - In-parallel type power battery pack - Google Patents
In-parallel type power battery pack Download PDFInfo
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- CN102723455A CN102723455A CN2012101354894A CN201210135489A CN102723455A CN 102723455 A CN102723455 A CN 102723455A CN 2012101354894 A CN2012101354894 A CN 2012101354894A CN 201210135489 A CN201210135489 A CN 201210135489A CN 102723455 A CN102723455 A CN 102723455A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides an in-parallel type power battery pack, which comprises single batteries and parallel elements, the single batteries are divided into N packs, each pack of single batteries have M single batteries, each pack of M single batteries are in series in order, wherein N and M are integers more than or equal to 2; the parallel elements are divided into e packs; each pack of parallel elements have M-1 parallel elements, a first end of the ist parallel element in the eth pack of parallel elements is connected between the ist single battery and the i+1th single battery of the eth pack of single batteries in the Nth pack, and a second end of the ist parallel element in the eth pack of parallel elements is connected between the ist single battery and the i+1th single batterey of the e+1th pack of single batteries, and N packs of single batteries are connected in parallel through a plurality of parallel elements. The in-parallel type power battery pack has the advantage of good security and high reliability, and each single battery can be accurately managed.
Description
Technical field
The present invention relates to the power battery technology field, particularly a kind of parallel connection is the type power battery pack in groups.
Background technology
At present, most of automobile mainly with internal combustion engines such as diesel engine or gasoline engines as power source, yet along with global petroleum resources are exhausted day by day; Environmental problems such as greenhouse effect are severe further; Each state all payes attention to the energy and problem of environment further, and has released more and more harsh Abgasgesetz, therefore; Under such background, must greatly develop new-energy automobile.Wherein, because power source is extensive and battery and motor technology comparative maturity, electric automobile (comprising pure electric automobile and hybrid vehicle) embodies its advantage gradually, by increasing people is approved, and becomes following great development trend.In order to satisfy demands such as dynamic property and continual mileage; The battery system that uses on the electric automobile all has certain requirement to voltage and capacity; And present battery cell voltage, capacity are all more limited; For satisfying the demand of car load, must many cell connection in series-parallel be integrated into battery pack and use for automobile.Compare with single battery cell, battery has increased many new problems after in groups, for example durability of the fail safe of battery system, the inconsistency between the battery cell and battery pack etc.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 electrokinetic cell main flow configuration in groups comprises parallel connection back series connection earlier or series connection back parallel connection earlier.1) earlier the string back and configuration: battery 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, and a batteries monomer then whole series arm that opens circuit all can't work on.2) earlier and the configuration of back string: can think with battery earlier according to string back earlier and configuration in groups, adopt the negligible lead of resistance as parallelly connected element then, all battery cells are together in parallel.Adopt lead as parallelly connected element; Be present main flow configuration, but under the battery short circuit failure conditions, the battery pack fail safe is relatively poor; And battery management system can't independently collect battery cell information of voltage separately, is unfavorable for the accurate management to battery cell.
By on can know that traditional power battery group technology exists that reliability is low, poor stability and be unfavorable for the shortcomings such as accurate management to battery cell.
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 parallel connection type power battery pack in groups, this power battery pack fail safe is good, 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 parallel connection 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; The parallel connection element; Said parallelly connected element is divided into the e group; 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.
Type power battery pack security performance is good in groups according to the parallel connection of the embodiment of the invention, 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, the parallelly connected element in the said power battery pack is a gate-controlled switch.
In one embodiment of the invention, the gate-controlled switch in the said power battery pack is one of electromagnetic switch, relay, triode, metal-oxide layer-semiconductor-field-effect transistor Mosfet and insulated gate bipolar transistor IGBT.
Adopting gate-controlled switch is the power battery pack 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, the parallelly connected element in the said power battery pack is one of resistance, fuse, diode, voltage stabilizing didoe and inductance.
In one embodiment of the invention, 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, M cell in each group connected through lead successively in the said power battery pack.
In one embodiment of the invention; The positive pole of the 1st cell in the said N group cell in the said power battery pack 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.
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 parallel connection 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 parallel connection structural representation of type power battery pack in groups of electromagnetic switch;
Fig. 3 is for according to parallelly connected element in the embodiment of the invention being the parallel connection structural representation of type power battery pack in groups of resistance; With
Fig. 4 is for according to parallelly connected element in the embodiment of the invention being the parallel connection structural representation of type power battery pack in groups of 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 parallel connection of embodiment of the invention type power battery pack in groups referring to figs. 1 to Fig. 4 below.
As shown in Figure 1, the parallel connection that the embodiment of the invention provides type power battery pack in groups comprises: organize cell 101 and the parallelly connected element 105 of many groups 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; Parallel connection element 105 is divided into the e group; Each is organized parallelly connected element and has M-1 parallelly connected element 105; First end that e organizes i the parallelly connected element 105 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 105 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 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 parallel connection 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 parallel connection 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, the M=8 in the above-mentioned power battery pack, N=4, e=3, i=7.
The parallel connection that provides according to the embodiment of the invention in groups the type power battery pack can prevent since wherein a batteries monomer short trouble occurs and cause with it 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 parallel connection in groups the parallelly connected element in the type power battery pack be gate-controlled switch.
In one embodiment of the invention; The above-mentioned parallel connection gate-controlled switch in the type power battery pack in groups is electromagnetic switch, relay, triode, Mosfet (Metal-Oxide-Semiconductor Field-Effect Transistor; Metal-oxide layer-semiconductor-field-effect transistor) and one of IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor).
In one embodiment of the invention, as shown in Figure 2, the parallel connection that the embodiment of the invention provides type power battery pack in groups comprises: 101,21 electromagnetic switch 201 of 32 joint cells, 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; 21 electromagnetic switch 201 are divided into 3 groups; Each group has 7 electromagnetic switch 201; Each electromagnetic switch 201 is between two adjacent Battery pack monomers; And the two ends of each electromagnetic switch 201 are connected between two corresponding in the corresponding two groups of cells joint cells 101; For example, first end of the 1st electromagnetic switch 201 in the 3rd group of electromagnetic switch is connected between in the 3rd group of cell the 1st and the 2nd cell 101, and second end of the 1st electromagnetic switch 201 in the 3rd group of electromagnetic switch is connected between in the 4th group of cell the 1st and the 2nd cell 101; By that analogy, through 21 electromagnetic switch 201 that 4 groups of cells are parallelly connected.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 parallel connection of embodiment of the invention type power battery pack in groups; With electromagnetic switch as parallelly connected element; Battery management system can be according to the power battery pack situation that measures in real time, controls reasonably that electromagnetic switch changes that power battery pack is configured as earlier and back string, string back and or other complex configurations earlier.When power battery pack need be strengthened from equilibrium, all electromagnetic switch of closing, then the power battery pack configuration conversion is elder generation and back string; When power battery pack has a certain joint cell short circuit to occur to lose efficacy, open all electromagnetic switch, the power battery pack configuration conversion be earlier behind the string also, then can reduce short circuit current, the fail safe of raising battery pack.According to different working conditions and purpose, battery management system can reasonably be controlled opening and turn-offing of electromagnetic switch, reaches best management and control.
In one embodiment of the invention, above-mentioned parallel connection in groups the parallelly connected element 105 in the type power battery pack can be one of resistance, fuse, diode, voltage stabilizing didoe and inductance.
Be that resistance is that example is described power battery pack with reference to figure 3 with parallelly connected element 105 below.
As shown in Figure 3, parallel connection type power battery pack in groups comprises: 101,21 resistance 301 of 32 joint cells, 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; 21 resistance 301 are divided into 3 groups; Each group has 7 resistance 301; Each resistance 301 is between two adjacent Battery pack monomers, and the two ends of each resistance 301 are connected between two corresponding in the corresponding two groups of cells joint cells 101, for example; First end of the 1st resistance 301 in the 3rd group of resistance is connected between in the 3rd group of cell the 1st and the 2nd cell 101; And second end of the 1st resistance 301 in the 3rd group of resistance is connected between in the 4th group of cell the 1st and the 2nd cell 101, by that analogy, through 21 resistance 301 with 4 groups of cells parallel connections.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 parallel connection of embodiment of the invention type power battery pack in groups; Adopt resistance as parallelly connected element; Its advantage is: under certain batteries monomer is short-circuited situation about losing efficacy, play metering function, as parallelly connected element, the fail safe of battery pack is relatively good than traditional lead; 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.In addition, power battery pack also has certain for equalization function, and battery cell opens circuit under the failure conditions, and the reliability of battery pack is also better.
Below with reference to figure 4 with parallelly connected element 105 be the fuse parallel connection that to be example provide the embodiment of the invention in groups the type power battery pack describe.
As shown in Figure 4, the parallel connection that the embodiment of the invention provides type power battery pack in groups comprises: 101,21 fuses 401 of 32 joint cells, 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; 21 fuses 401 are divided into 3 groups; Each group has 7 fuses 401; Each fuse 401 is between two adjacent Battery pack monomers, and the two ends of each fuse 401 are connected between two corresponding in the corresponding two groups of cells joint cells 101, for example; First end of the 1st fuse 401 in the 3rd group of fuse is connected between in the 3rd group of cell the 1st and the 2nd cell 101; And second end of the 1st fuse 401 in the 3rd group of fuse is connected between in the 4th group of cell the 1st and the 2nd cell 101, by that analogy, through 21 fuses 401 with 4 groups of cells parallel connections.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 parallel connection of embodiment of the invention type power battery pack in groups; With fuse as parallelly connected element; Its outstanding advantage is: under certain batteries monomer was short-circuited situation about losing efficacy, several relevant fuses can fuse timely, thus protection whole power battery group; Can improve the adverse effect that battery cell lost efficacy power battery pack is caused widely, the fail safe of power battery pack has obtained further raising.
Therefore; The above-mentioned parallel connection parallelly connected element in the type power battery pack is in groups adopted one of controllable devices such as electromagnetic switch, relay, triode, metal-oxide layer-semiconductor-field-effect transistor Mosfet, insulated gate bipolar transistor IGBT no matter be; Still adopt one of uncontrollable electronic devices such as resistance, fuse, diode, voltage stabilizing didoe, inductance, 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; At the parallel connection of embodiment of the invention type electrokinetic cell in groups time the in groups; 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 (6)
1. parallel connection type power battery pack in groups 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; 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. parallel connection as claimed in claim 1 is the type power battery pack in groups, it is characterized in that, said parallelly connected element is a gate-controlled switch.
3. parallel connection 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, relay, triode, metal-oxide layer-semiconductor-field-effect transistor Mosfet and insulated gate bipolar transistor IGBT.
4. parallel connection as claimed in claim 1 is the type power battery pack in groups, it is characterized in that, said parallelly connected element is one of resistance, fuse, diode, voltage stabilizing didoe and inductance.
5. parallel connection 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.
6. like each described parallel connection of claim 1-5 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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| CN2012101354894A CN102723455A (en) | 2012-05-02 | 2012-05-02 | In-parallel type power battery pack |
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| CN2012101354894A CN102723455A (en) | 2012-05-02 | 2012-05-02 | In-parallel type power battery pack |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104466068A (en) * | 2014-10-27 | 2015-03-25 | 深圳市快车道新能源发展有限公司 | Method for connecting storage battery combined system |
| CN105406015A (en) * | 2015-06-02 | 2016-03-16 | 重庆大学 | Power battery packs connected in series to form group |
| CN107994659A (en) * | 2018-01-18 | 2018-05-04 | 苏州妙益科技股份有限公司 | A kind of discharge and recharge implementation method of power battery |
| CN109546237A (en) * | 2018-10-29 | 2019-03-29 | 中山大学 | A kind of battery pack information acquisition system |
| CN110400894A (en) * | 2019-07-25 | 2019-11-01 | 清华大学 | End cover for battery cells with fire-extinguishing function concurrently |
| CN111313109A (en) * | 2020-02-25 | 2020-06-19 | 中国科学院电工研究所 | Improved battery network system and method |
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| 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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| CN201887440U (en) * | 2010-07-02 | 2011-06-29 | 清华大学 | Power battery pack safety protector |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104466068A (en) * | 2014-10-27 | 2015-03-25 | 深圳市快车道新能源发展有限公司 | Method for connecting storage battery combined system |
| WO2016066002A1 (en) * | 2014-10-27 | 2016-05-06 | 深圳市快车道新能源发展有限公司 | Connecting method of battery combined system |
| CN104466068B (en) * | 2014-10-27 | 2017-02-15 | 深圳市快车道新能源发展有限公司 | Method for connecting storage battery combined system |
| 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 |
| CN107994659A (en) * | 2018-01-18 | 2018-05-04 | 苏州妙益科技股份有限公司 | A kind of discharge and recharge implementation method of power battery |
| CN109546237A (en) * | 2018-10-29 | 2019-03-29 | 中山大学 | A kind of battery pack information acquisition system |
| CN110400894A (en) * | 2019-07-25 | 2019-11-01 | 清华大学 | End cover for battery cells with fire-extinguishing function concurrently |
| CN111313109A (en) * | 2020-02-25 | 2020-06-19 | 中国科学院电工研究所 | Improved battery network system and method |
| CN111313109B (en) * | 2020-02-25 | 2021-06-04 | 中国科学院电工研究所 | Improved battery network system and method |
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Application publication date: 20121010 |