CN101777781B - Electromobile modularization battery management system - Google Patents
Electromobile modularization battery management system Download PDFInfo
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- CN101777781B CN101777781B CN2009103128025A CN200910312802A CN101777781B CN 101777781 B CN101777781 B CN 101777781B CN 2009103128025 A CN2009103128025 A CN 2009103128025A CN 200910312802 A CN200910312802 A CN 200910312802A CN 101777781 B CN101777781 B CN 101777781B
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- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 15
- 239000000178 monomer Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
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Abstract
The invention discloses an electromobile modularization battery management system comprising a central processing unit, a vehicle control communication unit and a charging communication unit, wherein the central processing unit is also connected with a battery detection unit, a battery voltage equalizing unit, a battery pack detection unit, a switch state detection unit, a display unit and an alarm unit; the voltage detection module of the battery detection unit comprises switches K1 and K2 and a voltage signal processing unit; the switches K1 and K2 are sequentially conducted with the anode and the cathode of each signal battery in a travelling mode. The battery detection unit comprises a voltage detection module and a temperature detection module; the battery voltage equalizing unit comprises switches K4 and K5 and a voltage equalizing charging unit, wherein the switches K4 and K5 are linked to ensure the anode and cathode attribute output by the battery voltage equalizing unit is coincident with the corresponding signal battery. The invention has simple and reasonable structure, high modularization degree and operational reliability, so that the invention is suitable for various electromobiles.
Description
Technical field
The present invention relates to a kind of power-supply management system, relate to particularly that a kind of battery pack to electric automobile is monitored and the battery management system of the electromobile modularization of reporting to the police when going or charge.
Background technology
Along with the development and the extensive use of new energy technology, electrical equipment needs a large amount of battery pack that is in series by cell for it power source to be provided, like electric automobile.In the use of battery pack; Battery management system must be monitored the working condition such as the voltage of cell in real time; Electric current, parameters such as temperature guarantee the safety of electrical equipment and battery pack itself and offer a kind of solution of rationally using the performance of battery pack efficiently of user.
The monomer battery voltage of secondary cell is all lower at present, like Ni-MH battery 1.2V, and lead-acid battery 2V; Lithium ion battery 3.7V will form the high-tension battery group system of hundreds of volt, and it is bulky; Weight is big; Characteristics such as the battery management system wiring is numerous and diverse, the mode that generally all can be divided into several battery pack series connection makes up, so modular battery management system must become trend of application.
At first; Its advantage of modular battery management system is; The collection of bottom is managed own corresponding battery pack respectively with balanced submodule, has guaranteed the real-time of acquisition parameter and control, has improved the emergency reaction speed of battery management system to battery pack; For the fail safe of electrical equipment provides guarantee, the influence that has reduced simultaneously that the high voltage of whole battery group brings to the reliability of battery management system.
Secondly, modular battery management system has reduced the complexity of the installation of battery pack, and has increased the extensibility of battery management system, and battery management system adopts the CAN communication to guarantee the reliable and high efficiency of data acquisition and control.
The battery management system of modularized design can be given full play to the performance of various piece central controller; The bottom submodule can adopt the processor of low speed; And BMU unit, upper strata can adopt the processor of the high operational performance of high speed; Given play to speciality separately fully, the reasonable distribution resource has greatly improved the cost performance of battery management system.
The equalizing circuit of energy transfer provides guarantee for bringing the high economic worth of user with maximum performance battery capacity the useful life of improving battery.Modular battery management system scheme also is able to implement to provide precondition for the energy transfer scheme of low cost high-voltage simultaneously.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art; Provide a kind of can be when electric automobile be driven to the monitoring of cell and battery pack, again can be when charging to the monitoring of cell and battery pack, all press the battery management system of the electromobile modularization of charging and warning.
The object of the invention is achieved through following technical proposals: comprise CPU, car control communication unit, charging communication unit, said CPU also connects battery detection unit, battery pressure unit, battery pack detecting unit, on off state detecting unit, display unit and alarm unit.
Said battery detection unit comprises voltage detection module and temperature detecting module; Said voltage detection module comprises K switch 1, K2 and the voltage signal processing unit by central processing unit controls; Said K switch 1 is a unit switch, and its number of channels is number+1 of cell, under the control of CPU, connects the both positive and negative polarity of each cell one by one with touring mode; Said K switch 2 is a diverter switch, and is with K switch 1 interlock, constant with the both positive and negative polarity attribute of the signal that guarantees the level that voltage signal processing unit receives; Said temperature detecting module comprises temperature sensor T, K switch 3 and the processes temperature signal unit that is installed on the cell; Said K switch 3 is a unit switch, and its number of channels is the number of cell, under the control of CPU, links with K switch 1, K2, connects the temperature sensor T that installs on the identical cell one by one with same touring mode; The port I of said battery detection unit, port II, port III are electrically connected with CPU.
Said battery pressure unit comprises K switch 4, K5 and all presses charhing unit; Said K switch 4 is a unit switch, and its number of channels is number+1 of cell, under the control of CPU, connects the both positive and negative polarity of specifying cell with the mode of appointment; Said K switch 5 is a diverter switch, and is with K switch 4 interlocks, consistent with corresponding cell with the both positive and negative polarity attribute that guarantees the output of battery pressure unit; Said battery pressure unit also is electrically connected with battery pack, and its set inside has the charge power supply supply circuit and by the charge switch circuit of central processing unit controls; Port I, the port II of said battery pressure unit are electrically connected with CPU.
Compared with prior art, the present invention has the following advantages: simple and reasonable, the degree of modularity is high, reliable operation.Being suitable for various electric automobiles uses.
Description of drawings
Fig. 1 is the electrical principle block diagram of one embodiment of the invention;
Fig. 2 is the electrical principle block diagram of battery detection unit embodiment illustrated in fig. 1;
Fig. 3 is the electrical principle block diagram of battery pressure unit embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
With reference to Fig. 1; Present embodiment comprises CPU, car control communication unit, charging communication unit, and said CPU also connects battery detection unit, battery pressure unit, battery pack detecting unit, on off state detecting unit, display unit and alarm unit.
Said battery detection unit comprises voltage detection module and temperature detecting module; Said voltage detection module comprises K switch 1, K2 and the voltage signal processing unit by central processing unit controls; Said K switch 1 is a unit switch, and its number of channels is number+1 of cell, under the control of CPU, connects the both positive and negative polarity of each cell one by one with touring mode; Said K switch 2 is a diverter switch, and is with K switch 1 interlock, constant with the both positive and negative polarity attribute of the signal that guarantees the level that voltage signal processing unit receives; Said temperature detecting module comprises temperature sensor T, K switch 3 and the processes temperature signal unit that is installed on the cell; Said K switch 3 is a unit switch, and its number of channels is the number of cell, under the control of CPU, links with K switch 1, K2, connects the temperature sensor T that installs on the identical cell one by one with same touring mode; The port I 101 of said battery detection unit, port II 102, port III 103 are electrically connected with CPU.
Said battery pressure unit comprises K switch 4, K5 and all presses charhing unit; Said K switch 4 is a unit switch, and its number of channels is number+1 of cell, under the control of CPU, connects the both positive and negative polarity of specifying cell with the mode of appointment; Said K switch 5 is a diverter switch, and is with K switch 4 interlocks, consistent with corresponding cell with the both positive and negative polarity attribute that guarantees the output of battery pressure unit; Said battery pressure unit also is electrically connected with battery pack, and its set inside has the charge power supply supply circuit and by the charge switch circuit of central processing unit controls; Port I 201, the port II 202 of said battery pressure unit are electrically connected with CPU.
Said voltage signal processing unit, battery pack detecting unit, car control communication unit, charging communication unit, on off state detecting unit, display unit and alarm unit, the circuit or the product of the prior art that employing is ripe.
The display of display unit can be independent display, also can utilize display ready-made on the electric automobile.
The alarm of alarm unit can be independent alarm, also can utilize alarm ready-made on the electric automobile.
Temperature sensor T, K switch 1-K5 adopts the product of ripe prior art.K switch 1-K5 can be contact switch or noncontacting switch.
The battery pack detecting unit is used for obtaining the total voltage and the total current parameter of battery pack.
The on off state detecting unit is used for obtaining the state of battery pack master switch.
Car control communication unit is used for and the communication of car control device.
The charging communication unit is used for and the external charger communication.
CPU is provided with special chip and memory cell, and special-purpose software is installed.
With reference to Fig. 1, in the frame of broken lines of the right is the device on the electric automobile, and wherein external charger can be the charger of charging station, and charging station is equivalent to the gas station of fuel-engined vehicle.
With reference to Fig. 2,3, battery pack is an example with 5 cells serial connection, in theory, the number of cell be unlimited individual, and practical application limited number always.
With reference to Fig. 2, battery detection unit comprises voltage detection module and temperature detecting module, and its function is that the temperature of cell and voltage are detected, and the detection data are delivered to CPU at last and are handled by special-purpose software.
The K switch 1 of voltage detection module, its port number are cell number+1, and in the present embodiment, the monomer number is 5, and the port number of K1 is 5+1=6, and establishing channel number is M1-M6, arranges downwards from the top of accompanying drawing 2.Under the control of CPU, with certain hour at interval, in a certain order, be in the mode of on-state, go the rounds to switch with per two passages, as time interval of switching be 30 milliseconds.K switch 2 and K1 interlock, K switch 2 mainly are used for the polarity of voltage of diverter switch K1.Logical like M1, M2, other are disconnected, and M1 be anodal, and this moment, K3 was in top position, and the electrical level polar of voltage signal processing unit reception is correct.After 30 milliseconds, M1 is disconnected, M3 is logical, and M2 is constant with other, and K3 is downward simultaneously, and the electrical level polar of voltage signal processing unit reception is still correct like this.After 30 milliseconds, M2 breaks, M4 is logical, and M3 is constant with other, and K3 makes progress simultaneously, and the electrical level polar of voltage signal processing unit reception is still correct like this.Other passages are open close in an identical manner, and K3 links up or down.Voltage signal processing unit passes to CPU with the level value that receives, if during the sub-average certain level of the voltage of certain cell, voltage signal processing unit instruction battery pressure unit is given this cell charging.
The K switch 3 of temperature detecting module, under the control of CPU, with certain hour at interval, touring one by one switching the in a certain order, as the time interval of switching be 30 milliseconds.When the temperature that detects each cell surpassed set point, alarm unit work through sound, light or sound and light alarm, showed it is the temperature exceeding standard of which battery simultaneously synchronously on the display, get rid of so that operating personnel carry out fault.Temperature detecting module can work when electric automobile during traveling or static charging.Also can only work when static charging.
When CPU is lower than the mean value of setting at certain cell of acquisition, driving switch K4 work on the one hand, in the present embodiment, the cell number is 5, and the port number of K4 is 5+1=6, and establishing channel number is N1-N6, arranges downwards from the top of accompanying drawing 3.When voltage detection module detected the sub-average certain level of voltage of a certain cell, CPU was connected the dedicated tunnel of K4 on the one hand, instructed the battery pressure unit to give this cell charging simultaneously.If No. 1 cell needs charging, N1, N2 lead to, and other are disconnected, and K5 makes progress, at this moment the polarity of No. 1 cell and the polarities match of all pressing charhing unit.If No. 2 cell needs charging, N2, N3 lead to, and other are disconnected, and K5 must could guarantee the polarity of No. 1 cell and the polarities match of all pressing charhing unit downwards.Other in like manner.When specifying the cell charging to reach certain value, keep and work as prepass, but the inner outage of charhing unit is all pressed in the CPU instruction.The power supply of charging is from battery pack.
Do not power on if certain cell fills for a long time, perhaps temperature rise is too high, alarm work, and display demonstration problem simultaneously place, operating personnel can change cell in view of the above.
All pressures charhing unit of battery pressure unit; Adopted the mode of energy transfer; Power supply with battery pack charges to more low level cell, can improve the useful life of battery and bring into play the battery capacity band to greatest extent, guarantee is provided for the high economic worth of user.Modular battery management system scheme also is able to implement to provide precondition for the energy transfer scheme of low cost high-voltage simultaneously.
The present invention can also adopt the design module of many CPU, adopts the CAN bus to communicate, to guarantee the reliable transmission of each module and management system major control data.
Claims (2)
1. electromobile modularization battery management system; Comprise CPU, car control communication unit, charging communication unit, it is characterized in that: said CPU also connects battery detection unit, battery pressure unit, battery pack detecting unit, on off state detecting unit, display unit and alarm unit;
The battery detection unit includes a voltage detection module and the temperature detection module; said voltage detection module comprises a central processing unit controlled by a switch K1, K2 and the voltage signal processing unit; said switch K1 is the combination switch, the channel number of the monomer plus the number of cells in the control of the central processing unit, one by one, with roving on a single battery for each positive and negative; said switch K2 as a toggle switch, and the switch K1 linkage, in order to ensure the voltage signal processing unit receives a signal level of the positive and negative attributes remain unchanged; said temperature detection module comprises the battery mounted in the single temperature sensor T, the switch K3 and temperature signal processing unit; said switch K3 is combined switch, the channel number of the number of cells in the central processing unit under the control of the switch K1, K2 linked together in the same way one by one circuit unit cells connected to the same temperature sensor is installed on T; the port of the battery detection unit ?
, port
, port
is electrically connected to the central processing unit.
2? According to claim 1, wherein the modular electric vehicle battery management system characterized in that: said battery equalizing unit includes a switch K4, K5, and equalizing charging unit; said switch K4 for the combination switch, the number of channels plus the number of the unit cell 1, the central processing unit under the control specified in the manner specified on the positive and negative single cell; said switch K5 as a toggle switch, and the switch K4 linkage, in order to ensure the battery were The positive and negative pressure unit outputs attributes consistent with the corresponding unit cells; equalizing the battery unit also electrically connected to the battery pack, which is provided inside the charging power supply circuit and a central processing unit controls the charging switching circuit; wherein cell battery equalizing port port
, port
is electrically connected to the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103128025A CN101777781B (en) | 2009-12-30 | 2009-12-30 | Electromobile modularization battery management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103128025A CN101777781B (en) | 2009-12-30 | 2009-12-30 | Electromobile modularization battery management system |
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| CN101777781A CN101777781A (en) | 2010-07-14 |
| CN101777781B true CN101777781B (en) | 2012-07-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130030520A (en) * | 2011-09-19 | 2013-03-27 | 현대모비스 주식회사 | Apparatus and method displaying battery state using intelligent battery sensor for using car |
| CN106124905A (en) * | 2016-07-28 | 2016-11-16 | 芜湖凯尔电气科技有限公司 | The charging detecting system of electric automobile |
| CN107650718A (en) * | 2017-10-11 | 2018-02-02 | 吴光军 | A kind of electric vehicle rapid charging control circuit and control method |
| CN108415334A (en) * | 2018-04-04 | 2018-08-17 | 苏州妙益科技股份有限公司 | A kind of BMS main control modules of three CPU |
Citations (4)
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|---|---|---|---|---|
| WO2005117231A1 (en) * | 2004-05-24 | 2005-12-08 | Milwaukee Electric Tool Corporation | Method and system for battery charging |
| CN101078749A (en) * | 2007-06-29 | 2007-11-28 | 哈尔滨工业大学 | Power cell source test system |
| CN201117742Y (en) * | 2007-08-22 | 2008-09-17 | 万向集团公司 | Lithium ion dynamic batteries administrative system |
| CN101421883A (en) * | 2006-04-13 | 2009-04-29 | 松下电器产业株式会社 | Battery pack and method for detecting disconnection of same |
-
2009
- 2009-12-30 CN CN2009103128025A patent/CN101777781B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005117231A1 (en) * | 2004-05-24 | 2005-12-08 | Milwaukee Electric Tool Corporation | Method and system for battery charging |
| CN101421883A (en) * | 2006-04-13 | 2009-04-29 | 松下电器产业株式会社 | Battery pack and method for detecting disconnection of same |
| CN101078749A (en) * | 2007-06-29 | 2007-11-28 | 哈尔滨工业大学 | Power cell source test system |
| CN201117742Y (en) * | 2007-08-22 | 2008-09-17 | 万向集团公司 | Lithium ion dynamic batteries administrative system |
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Owner name: HUNAN CORUN YUANXIN ENERGY SOURCES CO., LTD. Free format text: FORMER OWNER: HUNAN CORUN HI-TECH. HOLDING CO., LTD. Effective date: 20141223 |
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Effective date of registration: 20141223 Address after: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Patentee after: Hunan Corun New Energy Co.,Ltd. Address before: 410205 Changsha high tech Development Zone, Tongzi, west slope road, No. 348, No. Patentee before: Hunan Corun Hi-Tech. Holding Co.,Ltd. |
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Effective date of registration: 20150226 Address after: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Patentee after: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. Address before: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Patentee before: Hunan Corun New Energy Co.,Ltd. |
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Address after: 528031, room 1, building 131, No. 601-604, Hua Hua Xi Road, Chancheng District, Guangdong, Foshan, China, A Patentee after: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. Address before: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230323 Address after: 410221 No. 348, Tongzipo West Road, Changsha High tech Development Zone, Changsha City, Hunan Province Patentee after: HUNAN COPOWER EV BATTERY Co.,Ltd. Address before: 528031 room 601-604, building a, building 1, No. 131, Jihua West Road, Chancheng District, Foshan City, Guangdong Province Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |