CN102376988A - Battery pack module, energy management system thereof and energy management method thereof - Google Patents
Battery pack module, energy management system thereof and energy management method thereof Download PDFInfo
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- CN102376988A CN102376988A CN2010102525186A CN201010252518A CN102376988A CN 102376988 A CN102376988 A CN 102376988A CN 2010102525186 A CN2010102525186 A CN 2010102525186A CN 201010252518 A CN201010252518 A CN 201010252518A CN 102376988 A CN102376988 A CN 102376988A
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- battery pack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/14—Preventing excessive discharging
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention mainly provides a battery pack module. A plurality of batteries form a battery module, a plurality of battery modules form a sub-battery pack, and a plurality of sub-battery packs form the battery pack module. Each sub-battery pack can independently supply power, and can be unloaded from the battery pack module and can be replaced when electric power of the sub-battery pack is exhausted. According to the invention, the number of the sub-battery pack embarked in the battery pack module can be decided according to the corresponding energy demand loaded by the battery pack module through above design of independent power supply and independent unloading and replacement of each sub-battery pack, so the battery pack module can be lightened when the enough electric power is supplied.
Description
Technical field
The present invention relates to a kind of battery module and EMS thereof and method.
Background technology
Environmental consciousness has been planted the popular feelings deeply, and also constantly make great efforts towards the direction of carbon reduction countries in the world, and auto industry also is to spare no effort towards this direction effort, is devoted to research and develop electric motor car to reach the purpose of carbon reduction effectively.
Electric motor car offers the electrodynamic induction motor with the electric power of battery, produces rotating magnetic field by electric energy, thereby makes the motor driven vehicle.The waste gas that is produced when therefore not having gasoline combustion can improve the air quality of environment widely, and reduce emission of carbon-dioxide in large quantities.
And the Electric Design of electric motor car, present stage is formed a battery module (module) by a plurality of batteries (cell), constitutes a battery pack (battery pack) by a plurality of battery modules again.It should be noted that can satisfy go in, the electric motor car of long-range distance, be commonly referred to as global function car (full performance car), the volume of the battery pack of this kind vehicle is very huge, and weight hundreds of kilograms that weigh.When this battery power exhausts, must unload whole battery group down replacing, also because of the restriction of volume and weight issue, cause the inconvenience in the replacing.
No matter in addition, can be known by some documents, be domestic or external, and 90% car distance travelled every day number is neither to 100 kilometers.In other words; During design is used to provide and goes, the electric power of long-range distance and seldom being used, i.e. the electric motor car of above-mentioned full function if only be used on and off duty, because of operating range short; And the volume and the weight of battery pack are fixed again; And can't adjust according to the distance of electric vehicle running, the battery pack that electric motor car is heavy has in tow increased the load that goes on the contrary, has also wasted many energy of battery pack.
Also because of the problems referred to above, electric motor car also develops the style that city car (city car), that is, and and with electric power and the dimension shrinks of above-mentioned battery pack (battery pack), so that the short distance distance travel to be provided specially.Certainly, so design also directly sacrificed in the vehicle, the driveability of long-range distance.
Summary of the invention
In view of this; The present invention provides a kind of battery module and EMS and method; Can in battery module, design can be independently-powered and can unload the sub-battery pack of replacing respectively, therefore can decide the quantity of the sub-battery pack of lift-launch in battery module to the energy requirement of the pairing load of battery module; With providing under the situation of enough electric power, can make this battery module reach light-weighted purpose.
The first string of the present invention provides a kind of battery module; Wherein, constitute a battery module (module), and constitute a sub-battery pack (subpack) by a plurality of battery modules by a plurality of batteries (cell); Constitute this battery module (pack) by a plurality of sub-battery pack again; And each sub-battery pack can be independently-powered, and can from this battery module, unload, and the quantity that said sub-battery pack is equipped in this battery module can be decided according to the energy requirement of pairing load.
According to the battery module of the first string of the present invention, wherein, said sub-battery pack electrically connects in parallel, and said battery module electrically connects in parallel, and said battery electrically connects with mode parallelly connected and series connection.
In addition, above-mentioned battery for example is 18650 type lithium batteries.In addition, the energy requirement of above-mentioned load for example is meant electric motor car start (climbing at a high speed ...) or satisfies the required electric power of chainage.
Second scheme of the present invention provides a kind of EMS of battery module; This EMS is except that the described battery module of first scheme; Also comprise a plurality of battery management systems (Battery Management System; BMS) and battery control unit (Battery Control Unit, BCU).
Said battery management system respectively in order to the state of charge of monitoring each sub-battery pack (Sate of Charge, SOC).And said battery control unit is in order to the state of charge of the sub-battery pack that receives each battery management system and monitor, and according to the selected battery management system of state of charge notice, battery-powered to control corresponding son.
In addition, said battery management system further can monitor respectively each sub-battery pack health status (Sate of Health, SOH).
The 3rd scheme of the present invention provides a kind of energy management method of battery module, and this method comprises the following step:
At first, according to energy requirement, obtain the state of charge of each sub-battery pack.Then, with state of charge be lower than the discharge critical value (threshold) sub-battery pack close.At last, in the never pent sub-battery pack, select electric power can satisfy a sub-battery pack of this energy requirement, and open should son battery-powered.
In addition; When above-mentioned single sub-battery pack can't satisfy this energy requirement; Further comprise and select electric power addition summation afterwards can satisfy a plurality of sub-battery pack of this energy requirement in the never pent sub-battery pack, and open this a little battery-powered step simultaneously.And above-mentioned said a plurality of sub-battery pack are to serve as preferential with the minimum number that can satisfy this energy requirement.
In addition, when carrying out the step that the sub-battery pack that state of charge is lower than the discharge critical value closes, further can comprise the step that the information that unloads this sub-battery pack is provided.
Description of drawings
Fig. 1 is the structural representation of battery module of the present invention;
Fig. 2 is the circuit block diagram of the EMS of battery module of the present invention; And
Fig. 3 is the flow chart of the energy management method of battery module of the present invention.
Embodiment
Preferred embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the structural representation of battery module of the present invention.In Fig. 1, battery module 10 be by sub-battery pack 20,22,24 be electrically connected to each other in parallel the institute constitute.Wherein, sub-battery pack 20 is to be made up of a plurality of battery modules 12 institute that is electrically connected to each other in parallel, battery module 12 inside then be by a plurality of batteries (not shown, normally 18650 type lithium batteries) with the mode of parallel connection and series connection electrically connect constituted.Likewise, sub-battery pack the 22, the 24th, by a plurality of battery modules 14,16 be electrically connected to each other in parallel the institute constitute, battery module 14,16 inside then be by a plurality of batteries (not shown) with the parallel connection and the series connection mode electrically connect constituted.
Particularly, in the present embodiment, be example with battery module 12, battery modular structure I:60P2S representes that it is one group that 60 batteries are connected in parallel, and constitutes battery module 12 thereby two groups of identical like this batteries in parallel connection are connected in series again; Perhaps, battery modular structure II:40P2S representes that it is one group that 40 batteries are connected in parallel, and constitutes battery module 12 thereby two groups of identical like this batteries in parallel connection are connected in series again; Perhaps, battery modular structure III:20P2S representes that it is one group that 20 batteries are connected in parallel, and constitutes battery module 12 thereby two groups of identical like this batteries in parallel connection are connected in series again.
It should be noted that the sub-battery pack the 20,22, the 24th of battery module 10 of the present invention, being designed to can be independently-powered, and can remove from battery module 10 respectively and change.In other words, design can be directed against the energy requirement of the corresponding load of battery module 10 like this, decides the quantity of the sub-battery pack of lift-launch on battery module 10.
With present embodiment, the corresponding load of above-mentioned battery module 10 is meant electric motor car start (climbing at a high speed ...) or satisfies the required electric power of chainage.Suppose electric motor car need go in, long distance; Can three groups of sub-battery pack 20,22,24 all be equipped in the battery module 10 (promptly claims fully loaded); And when electric motor car only need go short distance, can one group of sub-battery pack 20 or two groups of sub-battery pack 20,22 be equipped in the battery module 10 (promptly claiming underloading or semi-load) and can satisfy energy requirement.
And the quantity of the battery that present embodiment is mentioned, battery module and sub-battery pack is only used as explanation, is not limitation range of application of the present invention, and integral body depends on the energy demand of corresponding load.
Fig. 2 is the circuit block diagram of the EMS of battery module of the present invention.In Fig. 2, battery module 10, battery management system 32,34,36 and the battery control unit 38 mentioned above EMS 30 comprises.
Be equipped with sub-battery pack 20,22,24 in the battery module 10. Battery management system 32,34,36 is monitored state of charge (the State Of Charge of each sub-battery pack 20,22,24 respectively; SOC); And according to the selected battery management system 32,34,36 of state of charge notice, to control the power supply of corresponding sub-battery pack 20,22,24.Particularly, state of charge shows to transmit how many electric charges, recently representes with the percentage of the rated power of battery.In addition, battery management system 32,34,36 also can be monitored the health status of each sub-battery pack 20,22,24 respectively (State Of Health, SOH), health status representes how many electric charges battery can store, in order to eliminate most battery in useful life.
With present embodiment, battery control unit 38 receives the state of charge and the health status of the sub-battery pack 20,22,24 that each battery management system 32,34,36 monitored under normal conditions.When battery control unit 38 when bus 40 receives the energy requirement of electric motor car starts (climbing at a high speed ...), notify each battery management system 32,34,36 according to the state of charge of sub-battery pack 20,22,24, and select to supply power with which sub-battery pack.
Fig. 3 is the flow chart of the energy management method of battery module of the present invention.The steps flow chart of Fig. 3 is described with reference to the assembly of figure 1 and 2.
At first, according to energy requirement (situation about for example quicken, load such as climbing increasing), obtain the state of charge (step S50) of each battery pack.Then, the state of charge that judges whether sub-battery pack is lower than discharge critical value (threshold) (step S52); If have, the sub-battery pack that then state of charge is lower than the discharge critical value is closed (step S54).Then, in the never pent sub-battery pack, select a state of charge can satisfy the sub-battery pack of this energy requirement, and open should son battery-powered (step S56).Then, judge that can this single sub-battery pack continue to satisfy this energy requirement (step S58); When above-mentioned single sub-battery pack can't satisfy this energy requirement, in the promptly never pent sub-battery pack, select the summation after the electric power addition can satisfy a plurality of sub-battery pack of this energy requirement, and open this a little battery-powered (step S60) simultaneously.
And the above-mentioned a plurality of sub-battery pack of mentioning is to serve as preferential with the minimum number that can satisfy this energy requirement.In other words, the energy management method characteristics of this battery module are: with the power drain of single sub-battery pack is main, and when this sub-battery pack can't satisfy energy requirement, just opens other sub-batteries and give assistance.
In addition, when the above-mentioned sub-battery pack that state of charge is lower than the discharge critical value of execution is closed, also can comprise the step (not shown) that the information that unloads this sub-battery pack is provided.Thus, can remind driver's needs to go to the battery station to change sub-battery pack according to this information.
In sum, battery module of the present invention and EMS thereof and method are example to be applied in electric automobiles, and it can carry the sub-battery pack of varying number according to the distance or the required energy requirement of start of electric vehicle running in battery module.If will satisfy the long-range demand of global function car (full performance car), can all sub-battery pack be fully loaded with in battery module; Otherwise, if only will satisfy the short distance demand of city car, can be in battery module with parton battery pack semi-load (or underloading), reducing the weight of battery module, and reduce the load of electric vehicle running.Thus, the present invention can satisfy the endurance of electric motor car simultaneously except that the key property demand that can satisfy electric motor car.
Though the present invention narrates as above with reference to preferred embodiment and illustrative accompanying drawing, is not limited to the present invention.Be familiar with various modifications, omission and variation that the personnel of present technique make the content of its structure and concrete example, all should be included within protection scope of the present invention.
The primary clustering symbol description:
10 battery modules
12 battery modules
14 battery modules
16 battery modules
20 sub-battery pack
22 sub-battery pack
24 sub-battery pack
30 EMSs
32 battery management systems
34 battery management systems
36 battery management systems
38 battery control units
40 buses
Claims (10)
1. battery module; It is characterized in that: be to constitute this battery module by a plurality of sub-battery pack, said sub-battery pack is electrically connected to each other, and each sub-battery pack is to be made up of a plurality of battery module; These battery modules are electrically connected to each other; Each battery module is to be made up of a plurality of battery, and these batteries are electrically connected to each other, and each sub-battery pack can be independently-powered; And can from this battery module, unload, the quantity that its neutron battery pack is equipped in this battery module can be decided according to the energy requirement of pairing load.
2. battery module as claimed in claim 1 is characterized in that, said sub-battery pack electrically connects in parallel, and said battery module electrically connects in parallel, and said battery electrically connects with mode parallelly connected and series connection.
3. battery module as claimed in claim 1 is characterized in that, said battery is 18650 type lithium batteries.
4. battery module as claimed in claim 1 is characterized in that, the energy requirement of said load refers to the electric motor car start or satisfies the required electric power of chainage.
5. the EMS of a battery module, it comprises:
Battery module; Be to constitute by a plurality of sub-battery pack; Each sub-battery pack is to be made up of a plurality of battery module, and each battery module is to be made up of a plurality of battery, and each sub-battery pack can be independently-powered; And can from this battery module, unload, the quantity that its neutron battery pack is equipped in this battery module can be decided according to the energy requirement of pairing load;
A plurality of battery management systems are monitored the state of charge of each sub-battery pack respectively; And
Battery control unit receives the state of charge of the sub-battery pack that each battery management system monitors, and according to the selected battery management system of state of charge notice, battery-powered to control corresponding son.
6. EMS as claimed in claim 5, wherein, said battery management system further can be monitored the health status of each sub-battery pack respectively.
7. the energy management method of a battery module; This battery module is made up of a plurality of sub-battery pack, and each sub-battery pack is to be made up of a plurality of battery module, and each battery module is to be made up of a plurality of battery; And each sub-battery pack can be independently-powered; And can from this battery module, unload, the quantity that its neutron battery pack is equipped in this battery module can be decided according to the energy requirement of pairing load, and this energy management method comprises the following step:
According to energy requirement, obtain the state of charge of each sub-battery pack;
The sub-battery pack that state of charge is lower than the discharge critical value is closed; And
Never in the pent sub-battery pack, select electric power can satisfy a sub-battery pack of this energy requirement, and open should son battery-powered.
8. energy management method as claimed in claim 7 when this sub-battery pack can't satisfy this energy requirement, further comprises the following step:
Never in the pent sub-battery pack, select the summation after the electric power addition can satisfy a plurality of sub-battery pack of this energy requirement, and open simultaneously that this is a little battery-powered.
9. energy management method as claimed in claim 8, wherein said sub-battery pack serves as preferential with the minimum number that can satisfy this energy requirement.
10. energy management method as claimed in claim 7, the sub-battery pack that wherein state of charge is lower than the discharge critical value further comprises the information that unloads this sub-battery pack that provides when closing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010252518.6A CN102376988B (en) | 2010-08-10 | 2010-08-10 | Battery pack module, energy management system thereof and energy management method thereof |
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| CN201010252518.6A CN102376988B (en) | 2010-08-10 | 2010-08-10 | Battery pack module, energy management system thereof and energy management method thereof |
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| CN102376988A true CN102376988A (en) | 2012-03-14 |
| CN102376988B CN102376988B (en) | 2014-12-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014177062A1 (en) * | 2013-04-30 | 2014-11-06 | 台湾立凯绿能移动股份有限公司 | Large-scale electric vehicle power architecture and battery pack rotating rest scheduling control method therefor |
| CN105845999A (en) * | 2016-05-09 | 2016-08-10 | 北京新能源汽车股份有限公司 | Battery system and vehicle with same |
| JP2016524435A (en) * | 2013-04-30 | 2016-08-12 | 台湾立凱緑能移動股▲ふん▼有限公司 | Power system of large electric vehicle, alternating pause battery management and control method thereof |
| CN107009902A (en) * | 2017-05-03 | 2017-08-04 | 安徽康力节能电器科技有限公司 | A kind of electric automobile distribution system with energy feedback |
| WO2017185768A1 (en) * | 2016-04-29 | 2017-11-02 | 北京车和家信息技术有限责任公司 | Battery system control and charging method, battery system and electric vehicle |
| CN108666638A (en) * | 2018-05-15 | 2018-10-16 | 东风裕隆汽车有限公司 | A kind of battery module and its Energy Management System and method |
| CN110497819A (en) * | 2018-05-16 | 2019-11-26 | 南京酷朗电子有限公司 | Change the replacement battery system and method for on-vehicle battery capacity for electric car dynamic |
| WO2019237829A1 (en) * | 2018-06-12 | 2019-12-19 | 华为技术有限公司 | Battery system, and method for detecting state of health of battery |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105531866B (en) * | 2013-04-30 | 2018-03-20 | 英属盖曼群岛商立凯绿能移动科技股份有限公司 | Large Electric car power supply structure and its battery case have holidays by turns sequence control method |
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| WO2017185768A1 (en) * | 2016-04-29 | 2017-11-02 | 北京车和家信息技术有限责任公司 | Battery system control and charging method, battery system and electric vehicle |
| CN105845999A (en) * | 2016-05-09 | 2016-08-10 | 北京新能源汽车股份有限公司 | Battery system and vehicle with same |
| CN107009902A (en) * | 2017-05-03 | 2017-08-04 | 安徽康力节能电器科技有限公司 | A kind of electric automobile distribution system with energy feedback |
| CN108666638A (en) * | 2018-05-15 | 2018-10-16 | 东风裕隆汽车有限公司 | A kind of battery module and its Energy Management System and method |
| CN110497819A (en) * | 2018-05-16 | 2019-11-26 | 南京酷朗电子有限公司 | Change the replacement battery system and method for on-vehicle battery capacity for electric car dynamic |
| WO2019237829A1 (en) * | 2018-06-12 | 2019-12-19 | 华为技术有限公司 | Battery system, and method for detecting state of health of battery |
| US11967848B2 (en) | 2018-06-12 | 2024-04-23 | Huawei Digital Power Technologies Co., Ltd. | Battery system and method for detecting state of health of battery |
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| CN102376988B (en) | 2014-12-10 |
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