CN102376988B - 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
- Publication number
- CN102376988B CN102376988B CN201010252518.6A CN201010252518A CN102376988B CN 102376988 B CN102376988 B CN 102376988B CN 201010252518 A CN201010252518 A CN 201010252518A CN 102376988 B CN102376988 B CN 102376988B
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- battery pack
- sub
- battery
- module
- battery module
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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
-
- 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 is also to spare no effort towards this direction effort, is devoted to research and develop electric motor car effectively to reach the object of carbon reduction.
Electric motor car offers electrodynamic induction motor with the electric power of battery, produces rotating magnetic field by electric energy, thereby makes motor drive vehicle.Therefore the waste gas producing while not having gasoline combustion, can improve the air quality of environment widely, and reduces in large quantities the discharge of carbon dioxide.
And the Electric Design of electric motor car, present stage forms a battery module (module) by multiple batteries (cell), then forms a battery pack (battery pack) by multiple battery modules.It should be noted that can meet travel 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 of vehicle is very huge, and weight weighs hundreds of kilograms.In the time that this battery power exhausts, must unload whole battery pack down replacing, also because of the restriction of volume and weight issue, cause the inconvenience replacing with.
In addition, from some documents, no matter be domestic or external, 90% the every daily travel number of car is neither to 100 kilometers.In other words, during design is used to provide and travels, the electric power of long-range distance seldom being used, if the electric motor car that is above-mentioned full function is only used on and off duty, because of operating range short, and volume and the weight of battery pack are fixed again, and the distance that cannot travel according to electric motor car and adjusting, electric motor car in tow heavy battery pack has increased the load travelling 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 of city car (city car), that is, electric power and the size of above-mentioned battery pack (battery pack) are dwindled, so that short distance distance travel to be provided specially.Certainly, so design also directly sacrificed in vehicle, the driveability of long-range distance.
Summary of the invention
In view of this, the invention provides a kind of battery module and EMS thereof and method, can in battery module, design can be independently-powered and can unload respectively the sub-battery pack of replacing, therefore can be for the energy requirement of the corresponding load of battery module, decide the quantity that is mounted in the sub-battery pack in battery module, with in the case of providing enough electric power, can make this battery module reach light-weighted object.
The first string of the present invention is to provide a kind of battery module, wherein, form a battery module (module) by multiple batteries (cell), and form a sub-battery pack (subpack) by multiple battery modules, form this battery module (pack) by multiple sub-battery pack again, and every sub-battery pack can be independently-powered, and can from this battery module, unload, the quantity that described sub-battery pack is equipped in this battery module can be determined according to the energy requirement of corresponding load.
According to the battery module of the first string of the present invention, wherein, described sub-battery pack is electrically connected in parallel, and described battery module is electrically connected in parallel, and described battery is electrically connected in mode in parallel and series connection.
In addition, above-mentioned battery is for example 18650 type lithium batteries.In addition, the energy requirement of above-mentioned load for example refers to electric motor car start (climbing at a high speed ...) or meets the required electric power of chainage.
Second scheme of the present invention is to provide a kind of EMS of battery module, this EMS is except the battery module described in the first scheme, also comprise multiple battery management systems (Battery Management System, and a battery control unit (Battery Control Unit, BCU) BMS).
Described battery management system is respectively in order to monitor the state of charge (Sate of Charge, SOC) of every sub-battery pack.And described 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 notify selected battery management system according to state of charge, battery-powered to control corresponding son.
In addition, described battery management system further can be monitored respectively the health status (Sate of Health, SOH) of every sub-battery pack.
The 3rd scheme of the present invention is to provide a kind of energy management method of battery module, and the method comprises the following step:
First,, according to energy requirement, obtain the state of charge of every sub-battery pack.Then, state of charge is closed lower than the sub-battery pack of electric discharge critical value (threshold).Finally, never, in pent sub-battery pack, selection electric power can meet a sub-battery pack of this energy requirement, and it is battery-powered to open this son.
In addition, in the time that above-mentioned single sub-battery pack cannot meet this energy requirement, further comprise never and select electric power addition summation afterwards can meet the multiple sub-battery pack of this energy requirement in pent sub-battery pack, and open this little battery-powered step simultaneously.And multiple sub-battery pack described above is that minimum number can meet this energy requirement is as preferential.
In addition, in carrying out the step that state of charge is closed lower than the sub-battery pack of electric discharge critical value, further can comprise the step that the information that unloads this sub-battery pack is provided.
Brief description of the 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 form.Wherein, sub-battery pack 20 be by multiple battery modules 12 be electrically connected to each other in parallel form, battery module 12 inside be by multiple batteries (not shown, normally 18650 type lithium batteries) with mode in parallel and series connection be electrically connected formed.Similarly, sub-battery pack the 22, the 24th, by multiple battery modules 14,16 be electrically connected to each other in parallel form, battery module 14,16 inside be by multiple batteries (not shown) with mode in parallel and series connection be electrically connected formed.
Particularly, in the present embodiment, taking battery module 12 as example, battery modular structure I:60P2S represents that 60 cell parallels are connected to one group, thereby then by two groups of identical like this batteries in parallel connection be connected in series form battery module 12; Or battery modular structure II:40P2S represents that 40 cell parallels are connected to one group, thereby then by two groups of identical like this batteries in parallel connection be connected in series form battery module 12; Or battery modular structure III:20P2S represents that 20 cell parallels are connected to one group, thereby then two groups of identical like this batteries in parallel connection are connected in series and form battery module 12.
Sub-battery pack the 20,22, the 24th that it should be noted that battery module 10 of the present invention, being designed to can be independently-powered, and can remove and change from battery module 10 respectively.In other words, design can, for the energy requirement of the corresponding load of battery module 10, decide the quantity that is mounted in the sub-battery pack on battery module 10 like this.
With the present embodiment, the corresponding load of above-mentioned battery module 10 refers to electric motor car start (climbing at a high speed ...) or meets the required electric power of chainage.Suppose electric motor car need to travel in, long distance, three groups of sub-battery pack 20,22,24 all can be equipped in battery module 10 (claims fully loaded), and in the time that electric motor car only needs to travel short distance, one group of sub-battery pack 20 or two groups of sub-battery pack 20,22 can be equipped on to (claiming underloading or semi-load) in battery module 10 and can meet energy requirement.
And the quantity of the battery that the present embodiment is mentioned, battery module and sub-battery pack is only used as explanation, not limit to range of application of the present invention, entirety 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, EMS 30 comprises battery module 10, battery management system 32,34,36 and the battery control unit 38 mentioned above.
In battery module 10, be equipped with sub-battery pack 20,22,24.Battery management system 32,34,36 is monitored respectively state of charge (the State Of Charge of every sub-battery pack 20,22,24, SOC), and notify selected battery management system 32,34,36 according to state of charge, to control the power supply of corresponding sub-battery pack 20,22,24.Particularly, state of charge shows can transmit how many electric charges, recently represents with the percentage of the rated power of battery.In addition, battery management system 32,34,36 also can be monitored respectively health status (the State Of Health of every sub-battery pack 20,22,24, SOH), health status represents battery can store how many electric charges, in order to eliminate most battery in useful life.
With the present embodiment, battery control unit 38 receives state of charge and the health status of the sub-battery pack 20,22,24 that each battery management system 32,34,36 monitors under normal conditions.When battery control unit 38 is in the time that bus 40 receives the energy requirement of electric motor car start (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 with which sub-battery pack to power.
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.
First, for example,, according to energy requirement (situation about accelerate, the 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 electric discharge critical value (threshold) (step S52); If have, state of charge is closed to (step S54) lower than the sub-battery pack of electric discharge critical value.Then, never, in pent sub-battery pack, select a state of charge can meet the sub-battery pack of this energy requirement, and open this son battery-powered (step S56).Then, judge that can this single sub-battery pack continue to meet this energy requirement (step S58); In the time that above-mentioned single sub-battery pack cannot meet this energy requirement, never in pent sub-battery pack, select the summation of electric power after being added can meet the multiple sub-battery pack of this energy requirement, and open this little battery-powered (step S60) simultaneously.
And above-mentioned mentioned multiple sub-battery pack is that minimum number can meet this energy requirement is as preferential.In other words, the energy management method feature of this battery module is: be main by the power drain of single sub-battery pack, and in the time that this sub-battery pack cannot meet energy requirement, just open other sub-batteries and give assistance.
In addition, carry out above-mentioned by state of charge lower than electric discharge critical value sub-battery pack close in, also can comprise the step of the information that unloads this sub-battery pack (not shown) is provided.Thus, can remind driver need to go to battery station to change sub-battery pack according to this information.
In sum, battery module of the present invention and EMS thereof and method, to be applied in electric automobiles as example, the energy requirement that the distance that it can travel according to electric motor car or start are required, the sub-battery pack of carrying varying number in battery module.If meet the long-range demand of global function car (full performance car), all sub-battery pack can be fully loaded with in battery module; Otherwise, if only will meet the short distance demand of city car, can, by parton battery pack semi-load (or underloading) in battery module, to reduce the weight of battery module, and reduce the load that electric motor car travels.Thus, the present invention, except meeting the key property demand of electric motor car, can meet the endurance of electric motor car simultaneously.
Although the present invention narrates as above with reference to preferred embodiment and illustrative accompanying drawing, is not limited to the present invention.Various amendments, omission and variation that person skilled in the art person makes the content of its structure and concrete example, within all should being included in protection scope of the present invention.
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 EMS
32 battery management systems
34 battery management systems
36 battery management systems
38 battery control units
40 buses
Claims (3)
1. the energy management method of a battery module, this battery module is made up of multiple sub-battery pack, every sub-battery pack is made up of multiple battery module, each battery module is made up of multiple battery, and every 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 determined according to the energy requirement of corresponding load, and this energy management method comprises the following step:
According to energy requirement, obtain the state of charge of every sub-battery pack;
State of charge is closed lower than the sub-battery pack of electric discharge critical value; And
Never in pent sub-battery pack, selection electric power can meet a sub-battery pack of this energy requirement, and it is battery-powered to open this son,
In the time that this sub-battery pack cannot meet this energy requirement, further comprise the following step:
Never in pent sub-battery pack, select the summation of electric power after being added can meet the multiple sub-battery pack of this energy requirement, and open that this is a little battery-powered simultaneously.
2. energy management method as claimed in claim 1, wherein said sub-battery pack is taking the minimum number that can meet this energy requirement as preferential.
3. energy management method as claimed in claim 1, when wherein state of charge being closed lower than the sub-battery pack of electric discharge critical value, further comprises the information that unloads this sub-battery pack that provides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252518.6A CN102376988B (en) | 2010-08-10 | 2010-08-10 | Battery pack module, energy management system thereof and energy management method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252518.6A CN102376988B (en) | 2010-08-10 | 2010-08-10 | Battery pack module, energy management system thereof and energy management method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376988A CN102376988A (en) | 2012-03-14 |
| CN102376988B true CN102376988B (en) | 2014-12-10 |
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| CN201010252518.6A Expired - Fee Related CN102376988B (en) | 2010-08-10 | 2010-08-10 | Battery pack module, energy management system thereof and energy management method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2911036A1 (en) * | 2013-04-30 | 2014-11-06 | Aleees Eco Ark Co. Ltd. | Large electric vehicle power structure and alternating-hibernation battery management and control method thereof |
| US9592745B2 (en) | 2013-04-30 | 2017-03-14 | Aleees Eco Ark (Cayman) Co. Ltd. | Large electric vehicle power structure and alternating-hibernation battery management and control method thereof |
| 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 automobile 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 |
| CN110497819B (en) * | 2018-05-16 | 2023-04-28 | 南京酷朗电子有限公司 | Battery replacement system and method for dynamically changing capacity of vehicle-mounted battery of electric automobile |
| CN108808776B (en) * | 2018-06-12 | 2022-03-29 | 华为数字能源技术有限公司 | Battery system and battery health state detection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6741066B1 (en) * | 2000-09-21 | 2004-05-25 | O2Micro International Limited | Power management for battery powered appliances |
| CN101141008A (en) * | 2006-09-06 | 2008-03-12 | 日立车辆能源株式会社 | Secondary battery module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420036A (en) * | 2007-10-22 | 2009-04-29 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply management device and method for battery |
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2010
- 2010-08-10 CN CN201010252518.6A patent/CN102376988B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6741066B1 (en) * | 2000-09-21 | 2004-05-25 | O2Micro International Limited | Power management for battery powered appliances |
| CN101141008A (en) * | 2006-09-06 | 2008-03-12 | 日立车辆能源株式会社 | Secondary battery module |
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| CN102376988A (en) | 2012-03-14 |
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Granted publication date: 20141210 Termination date: 20190810 |