CN1783629A - Distributed type battery managing system and managing method - Google Patents
Distributed type battery managing system and managing method Download PDFInfo
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- CN1783629A CN1783629A CN 200410081434 CN200410081434A CN1783629A CN 1783629 A CN1783629 A CN 1783629A CN 200410081434 CN200410081434 CN 200410081434 CN 200410081434 A CN200410081434 A CN 200410081434A CN 1783629 A CN1783629 A CN 1783629A
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Abstract
This invention relates to the management to charged batteries and puts forward a distributed management system and a method including a battery set data sample module and a battery sample management module, in which, the data sample module samples parameters of two or more than two batteries and outputs the values into the management module, which responds the output of the data of at least two battery sets and processes it and the data sample module realizes a first stage protection to the battery set and the management module realizes a second stage protection to the set.
Description
[technical field]
The present invention relates to management system and management method that voltage, electric current, capacity and temperature to battery are sampled and managed, relate in particular to a kind of distributed real-time management system and management method.
[background technology]
Along with increasing of electrical equipment; the application of rechargeable battery pack also more and more widely; in the application process of battery pack, need battery pack is monitored; gather electric current, voltage, temperature and the residual capacity of every batteries; administration module is analyzed at sampled value; when occurring exceeding the situation of threshold range, the control protection module moves, and battery is protected.
Common battery pack sampling way to manage is following two kinds:
1. centralized battery pack management method, as shown in the figure 1.The advantage of this method is that structure is comparatively simple, be convenient to realize, shortcoming is that wire harness is too many, circuit connects complicated, since the electric current of each batteries, voltage, temperature, capacity all will be by hardware by channel selecting gradation sampling, so each data all will select to open successively inquiry by switch by different special circuit links.Can only inquire about electric current, voltage, temperature each time, a quantity of state in the capacity, so will be all data-electric currents of each batteries, voltage, temperature, capacity is all inquired about the words of finishing, in fact need 4 cycle periods just can finish once complete data query, Just because of this, the polling cycle of whenever finishing the primary cell state also is very long, can not monitor battery pack in real time, can't in time reflect the situation of battery.Because this method can not in time reflect the situation of battery, so also be difficult to realize the equalizing charge management of battery.Realize by hardware because of major function in addition,, be not easy to be integrated into the battery inclusion so the hardware plate bulk is bigger.Have only one-level management, protect reliable inadequately.
2. full distributed battery management system, the syndeton schematic diagram as shown in Figure 2.The advantage of this method is the independent Charge Management that can realize well each batteries, is easy to realize equalizing charge.Well battery status inspection in real time can be arranged, in fact because each batteries all has a special corresponding manager, so can realize uninterrupted status poll management to each batteries.But owing to the software processes of data all will be handled by sending to total manager, so certain delay is still arranged.Though this method can meet the demands on performance well, but practical application is but seldom, and reason is very simple because in fact be equivalent to each batteries all have one independently battery manager it is managed, so cost is too high, be difficult to realize mass production applications.And system bulk is also very big, is unfavorable for being integrated into the battery inclusion.Have only one-level management, protect reliable inadequately.
[summary of the invention]
Main purpose of the present invention is exactly in order to solve prior art problems; a kind of distributed battery management system and management method are provided; realization is to the real-time sampling management of every batteries; cost is low, volume is little; be suitable for being integrated in the battery inclusion; and realized multiple management, provide the reliable protection function battery.
For achieving the above object, a kind of distributed battery management system that the present invention proposes, comprise battery pack data sampling module and battery sampling administration module, described battery pack data sampling module is sampled to the parameter of two joints or the battery more than two joints respectively, and the sampled value of every batteries outputed to the battery sampling administration module, described battery pack data sampling module also comprises and is used for first interface that links to each other with external first protective circuit, described first interface is used for outputing control signals to external first protective circuit when certain sampled value surpasses the first protection threshold value, so that to being protected by administration battery pack; The output of at least two battery pack data sampling module of described battery sampling administration module response is also carried out respective handling, described battery sampling administration module also comprises and is used for second interface that links to each other with external second protective circuit, described second interface is used for outputing control signals to external second protective circuit when certain sampled value surpasses the second protection threshold value, so that to being protected by administration battery pack; Wherein the scope of the second protection threshold value is greater than the scope of the first protection threshold value.
Further; also comprise battery data comprehensive analysis processing module; the output of at least two battery sampling administration modules of described battery data comprehensive analysis processing module responds is also carried out respective handling; described battery sampling administration module also comprises and is used for the 3rd interface that links to each other with external second protective circuit; described the 3rd interface is used for outputing control signals to external second protective circuit when certain sampled value surpasses the 3rd setting thresholding; so that to being protected by administration battery pack, wherein the 3rd scope of setting thresholding equals the scope of the second protection threshold value.
Preferably, described battery pack data sampling module is sampled to voltage, electric current, capacity and the temperature parameter of four batteries respectively.
For achieving the above object, the present invention proposes a kind of distributed battery management method, may further comprise the steps:
The battery pack data sampling module is sampled to the parameter of two joints or the battery more than two joints respectively;
The sampled value of every batteries is outputed to the battery sampling administration module;
The battery sampling administration module receives the dateout of at least two battery pack data sampling module and carries out respective handling, when certain sampled value surpasses the second protection threshold value that the battery sampling administration module sets, the battery sampling administration module outputs control signals to external second protective circuit, control external second protective circuit action, thereby to being protected by administration battery pack;
When certain sampled value surpasses the first protection threshold value that the battery pack data sampling module sets; the battery pack data sampling module outputs control signals to external first protective circuit; control external first protective circuit action; thereby to being protected by administration battery pack, wherein the scope of the second protection threshold value is greater than the scope of the first protection threshold value.
Further; further comprising the steps of: battery data comprehensive analysis processing module receives from the output of at least two battery sampling administration modules and carries out respective handling; when certain sampled value surpasses the 3rd protection threshold value that battery data comprehensive analysis processing module sets; battery data comprehensive analysis processing module outputs control signals to second protective circuit; control the action of second protective circuit; thereby to being protected by administration battery pack, wherein the 3rd scope of setting thresholding equals the scope of the second protection threshold value.
Preferably, the battery pack data sampling module is sampled to voltage, electric current, capacity and the temperature parameter of four batteries respectively.The battery pack data sampling module is with sampled value disposable battery sampling administration module that is attached thereto by the SMBUS interface that sends in a packet of voltage, electric current, capacity and the temperature of every batteries.
The invention has the beneficial effects as follows: 1) adopt controlling of sampling mode, improved sample rate effectively, well solved the problem of batteries charging inequality battery pack grouping management.And have three-level protective at least, prevent from when only first class of protection fault, to make rechargeable battery be in no monitor state, thereby battery pack is damaged, when guaranteeing that promptly certain batteries is in abnormality in the battery pack, battery pack is protected.2) the battery pack data sampling module can in time transmit data sampled value disposable battery sampling administration module that sends in a packet of voltage, electric current, capacity and the temperature of every batteries, has realized the real-time monitoring to battery pack.3) because a battery pack data sampling module can be managed multiple batteries, and used administration module is few, cost is low, volume is little, is convenient to be integrated into the battery inclusion, possesses good practical value.4) cell number of power brick can be according to the practical situations adjustment, and the scope of application is extensive.The present invention sees whole big power brick and makes the baby battery bag of being made up of a plurality of 4 batteries and constitute, in concrete application item, can under the modification that is used as software and hardware hardly, add minimizing to the needs of battery number according to specific project fully to the power brick number.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 represents a kind of batteries management system schematic diagram of prior art;
Fig. 2 represents the another kind of batteries management system schematic diagram of prior art;
Fig. 3 represents one embodiment of the present of invention batteries management system schematic diagram;
Detailed maps among Fig. 4 presentation graphs 3 square frame A;
Fig. 5 represents the management flow chart of one embodiment of the present of invention.
[embodiment]
As Fig. 3, shown in 4, the distributed management system of battery pack comprises three parts, and battery pack data sampling module, battery sampling administration module and battery data comprehensive analysis processing module, the battery pack data sampling module has adopted the PS501 battery sampling chip of novel MicroChip company, it can monitor each joints of four joint polyphone batteries simultaneously, by the voltage of the integrated SMBus communication interface of chip internal with each batteries, electric current, the accurate measured value of temperature and capacity once sends to the battery sampling administration module (being the battery sampling managing chip of slave computer) that is attached thereto by the SMBus interface in a packet.So just can guarantee the real-time of battery data sampling well.
In addition; because the IO mouth of PS501 chip is a programmable battery protection function; as long as protection voltage with battery; electric current; initial value such as temperature and capacity is by after simple the setting; the PS501 chip just can the very first time when different abnormal conditions appear in battery status; promptly work as voltage; electric current; when any amount in temperature and the capacity surpasses each self-corresponding first protection threshold value; corresponding IO pin action of PS501 chip or output high-low level; the IO pin outputs to first protective circuit as first interface with control signal; first protective circuit is promptly handled accordingly according to this control signal, as turn-offing the external charging power supply or cutting off load etc.Thereby play first order protective effect to every batteries or battery pack.
Slave computer (being the battery sampling administration module) receives the sampled data that some battery pack data sampling module send; utilize program to carry out respective handling; process chart as shown in Figure 5; work as voltage; electric current; when any amount in temperature and the capacity surpasses each self-corresponding second protection threshold value; export corresponding high-low level signal by the corresponding IO pin of programming Control; the IO pin exports control signal to second protective circuit as second interface; second protective circuit is a switching circuit; control corresponding switching circuit and disconnect, can realize the management of charging and discharging of battery pack.This has just formed the second level protective effect to battery pack.
Because of first order protection is that the protection of PS501 chip controls is a hardware protection, second level protection is software protection, and hardware protection is last first class of protection, and when software protection fault, operation exception, the hardware protection effect is to guarantee the safety of power brick.So the scope of the first protection threshold value is greater than the scope of the second protection threshold value.For example, software protection detects when when discharge, batteries voltage was lower than 3100mv by action IO mouth discharge switch to be disconnected in setting and realizes protection.The protection minimum voltage of ps501 will be set to 3000mv so; the software protection that should carry out protection if discharge battery voltage has reached 3100mv is broken down and not action, and battery continues to discharge so, and ps501 realizes the hardware mandatory protection when reaching 3000mv.In addition, be noted that when requiring to realize that power brick is all filled function, the software protection of this moment to the protection threshold of single battery promptly the second protection threshold value will be set to higher slightly than ps501 protection voltage, to realize all filling to each batteries.Such as: with the second protection threshold setting of software is 4200mv; and with the first protection threshold setting of ps501 chip be 4100mv when so just can guarantee that each batteries is filled to 4100mv ps501 automatically its bypass is stopped this batteries charging, the continuation that does not influence other batteries that do not reach 4100mv is simultaneously charged.And do not have in time by the words of bypass protection when charging reaches 4100mv when the hardware protection of a certain batteries breaks down.Software protection disconnects the charging of entire cell bag when being checked through the dangerous values that certain batteries reaches 4200mv and realizes protection.
Simultaneously, slave computer (battery sampling administration module) sends to host computer (being battery data comprehensive analysis processing module) with the battery data arrangement back that obtains by the CAN communication interface.The comprehensive analysis processing of battery data is that the host computer at center is finished by the powerful ARM chip of a slice.Host computer is connected with a plurality of lower computer systems by the CAN communication interface.Receive after the sampled data of battery pack of slave computer; host computer will independently be analyzed and handle; every kind of sampled data and each is self-corresponding and to corresponding the 3rd protection threshold; when exceeding the scope of the 3rd protection threshold value; output control signals to second protective circuit by corresponding IO mouth (i.e. the 3rd interface); the control switch circuit disconnects, and can realize the management of charging and discharging of battery pack.This has just formed the third level protective effect to battery pack.Because the second level protection of protection of the third level of host computer and slave computer all belongs to software protection, control be same peripheral switching circuit, so no longer divide successively, the scope of the second protection threshold value is greater than the 3rd scope of protecting threshold value.
The flow process of the triode of present embodiment reason is as shown in Figure 5:
1) the battery pack data sampling module is sampled to the parameter of two joints or the battery more than two joints respectively;
2) sampled value with every batteries outputs to the battery sampling administration module;
3) the battery sampling administration module receives the dateout of at least two battery pack data sampling module and carries out respective handling, when certain sampled value surpasses the second protection threshold value that the battery sampling administration module sets, the battery sampling administration module outputs control signals to external second protective circuit, control the action of second protective circuit, thereby to being protected by administration battery pack;
4) battery data comprehensive analysis processing module receives from the output of at least two battery sampling administration modules and carries out respective handling, when certain sampled value surpasses the 3rd protection threshold value that battery data comprehensive analysis processing module sets, battery data comprehensive analysis processing module outputs control signals to second protective circuit, control the action of second protective circuit, thereby to being protected by administration battery pack;
5) when certain sampled value surpasses the first protection threshold value that the battery pack data sampling module sets; the battery pack data sampling module outputs control signals to external first protective circuit; control external first protective circuit action; thereby to being protected by administration battery pack, wherein the scope of the second protection threshold value is greater than the scope of the first protection threshold value.
Management system of the present invention has good flexibility on the battery assembling number of battery pack.Native system is seen whole big power brick dexterously and is made the baby battery bag of being made up of a plurality of 4 batteries and constitute, in concrete application item, can under the modification that is used as software and hardware hardly, add minimizing to the needs of battery number according to specific project fully to the power brick number.Theoretically, native system is applicable to that management comprises the power brick from single battery to any multiple batteries.Reason is very simple, because PS501 chip itself just has the function of management 1 to 4 batteries, and our system to be 4 batteries of in design each PS501 chip being managed be combined in the system as a separate unit, so can regulate the battery number of each slave computer sampling system by the number that increases or reduce the PS501 chip unit.As a same reason, can regulate the lower computer system number that is connected with host computer by the number of increase and decrease slave computer unit again.Like this, theoretically just can be by the power brick of any a plurality of cell number of system management.For example, a chip of selecting PIC is as slave computer, and when normally moving in the assurance system, generally the PS501 unit managed of each slave computer can not be above 5, and, allow to be no more than at most 20 slave computer unit with the CAN bus of slave computer according to the performance and the actual requirement of host computer.So the largest battery of native system management number can not surpass 4 * 5 * 20=400.
The present invention can be applied in the management aspect to the voltage of novel electric vehicle power battery pack, charging and discharging currents, battery remaining power and battery temperature.
In a word, the present invention had both had good sample rate, the numerical value of sampling accurately, the action of battery protection reaction fast at many levels; The manufacturing cost of control system well makes to produce in batches all to be met the demands fully on cost and performance again.
Claims (9)
1. distributed battery management system, it is characterized in that: comprise battery pack data sampling module and battery sampling administration module, described battery pack data sampling module is sampled to the parameter of two joints or the battery more than two joints respectively, and the sampled value of every batteries outputed to the battery sampling administration module, described battery pack data sampling module also comprises and is used for first interface that links to each other with first protective circuit, described first interface is used for outputing control signals to first protective circuit when certain sampled value surpasses the first protection threshold value, so that to being protected by the management battery; The output of at least two battery pack data sampling module of described battery sampling administration module response is also carried out respective handling, described battery sampling administration module also comprises and is used for second interface that links to each other with second protective circuit, described second interface is used for outputing control signals to second protective circuit when certain sampled value surpasses the second protection threshold value, so that to being protected by administration battery pack; Wherein the scope of the second protection threshold value is greater than the scope of the first protection threshold value.
2. distributed battery management system as claimed in claim 1; it is characterized in that: also comprise battery data comprehensive analysis processing module; the output of at least two battery sampling administration modules of described battery data comprehensive analysis processing module responds is also carried out respective handling; described battery sampling administration module also comprises and is used for the 3rd interface that links to each other with second protective circuit; described the 3rd interface is used for outputing control signals to second protective circuit when certain sampled value surpasses the 3rd setting thresholding; so that to being protected by administration battery pack, wherein the 3rd scope of setting thresholding equals the scope of the second protection threshold value.
3. distributed battery management system as claimed in claim 2, it is characterized in that: described battery sampling administration module also comprises the CAN communication interface, described battery data comprehensive analysis processing module also comprises the CAN communication interface, transmits so that battery sampling administration module and battery data comprehensive analysis processing module are carried out data by the CAN communication interface.
4. as each described distributed battery management system in the claim 1 to 3, it is characterized in that: described battery pack data sampling module is sampled to voltage, electric current, capacity and the temperature parameter of four batteries respectively.
5. distributed battery management method is characterized in that: may further comprise the steps:
The battery pack data sampling module is sampled to the parameter of two joints or the battery more than two joints respectively;
The sampled value of every batteries is outputed to the battery sampling administration module;
The battery sampling administration module receives the dateout of at least two battery pack data sampling module and carries out respective handling, when certain sampled value surpasses the second protection threshold value that the battery sampling administration module sets, the battery sampling administration module outputs control signals to second protective circuit, control the action of second protective circuit, thereby to being protected by administration battery pack;
When certain sampled value surpasses the first protection threshold value that the battery pack data sampling module sets; the battery pack data sampling module outputs control signals to first protective circuit; control the action of first protective circuit; thereby to being protected by administration battery pack, wherein the scope of the second protection threshold value is greater than the scope of the first protection threshold value.
6. distributed battery management method as claimed in claim 5; it is characterized in that: further comprising the steps of: battery data comprehensive analysis processing module receives from the output of at least two battery sampling administration modules and carries out respective handling; when certain sampled value surpasses the 3rd protection threshold value that battery data comprehensive analysis processing module sets; battery data comprehensive analysis processing module outputs control signals to second protective circuit; control the action of second protective circuit; thereby to being protected by administration battery pack, wherein the 3rd scope of setting thresholding equals the scope of the second protection threshold value.
7. distributed battery management method as claimed in claim 6 is characterized in that: carry out data by the CAN communication interface between battery sampling administration module and the battery data comprehensive analysis processing module and transmit.
8. as each described distributed battery management method in the claim 5 to 7, it is characterized in that: the battery pack data sampling module is sampled to voltage, electric current, capacity and the temperature parameter of four batteries respectively.
9. distributed battery management method as claimed in claim 8 is characterized in that: the battery pack data sampling module is with sampled value disposable battery sampling administration module that is attached thereto by the SMBUS interface that sends in a packet of voltage, electric current, capacity and the temperature of every batteries.
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Cited By (10)
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| CN101394080A (en) * | 2007-09-21 | 2009-03-25 | 深圳市比克电池有限公司 | Battery pack protection circuit |
| CN101192755B (en) * | 2006-11-27 | 2011-06-29 | 比亚迪股份有限公司 | A voltage balance management device of dynamic battery pack and management method |
| CN102195303A (en) * | 2010-03-12 | 2011-09-21 | 上海禾未网络科技有限公司 | Distributed multilayer battery management system and method |
| CN102275524A (en) * | 2011-06-30 | 2011-12-14 | 奇瑞汽车股份有限公司 | Diagnostic system and diagnostic method for power battery packs |
| CN102353906A (en) * | 2011-07-07 | 2012-02-15 | 杭州电子科技大学 | Charge monitoring system for distributed storage battery pack |
| CN102412425A (en) * | 2011-09-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Method and device for managing batteries |
| CN103076768A (en) * | 2011-10-25 | 2013-05-01 | 比亚迪股份有限公司 | Distributive battery management system and identification distribution method thereof |
| CN105703425A (en) * | 2016-03-01 | 2016-06-22 | 上海航盛实业有限公司 | Battery management system |
| CN111766520A (en) * | 2020-07-09 | 2020-10-13 | 陕西正通电子科技有限公司 | High-speed acquisition method for monitoring data of distributed storage battery |
| CN112271410A (en) * | 2020-10-20 | 2021-01-26 | 中国第一汽车股份有限公司 | Power battery and driving equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6104967A (en) * | 1997-07-25 | 2000-08-15 | 3M Innovative Properties Company | Fault-tolerant battery system employing intra-battery network architecture |
| CN2372816Y (en) * | 1999-04-05 | 2000-04-05 | 北京汇众实业总公司 | Accumulator protector |
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| CN101192755B (en) * | 2006-11-27 | 2011-06-29 | 比亚迪股份有限公司 | A voltage balance management device of dynamic battery pack and management method |
| CN101394080B (en) * | 2007-09-21 | 2012-12-19 | 深圳市比克电池有限公司 | Battery pack protection circuit |
| CN101394080A (en) * | 2007-09-21 | 2009-03-25 | 深圳市比克电池有限公司 | Battery pack protection circuit |
| CN102195303B (en) * | 2010-03-12 | 2014-01-15 | 上海禾未网络科技有限公司 | Distributed multilayer battery management system and method |
| CN102195303A (en) * | 2010-03-12 | 2011-09-21 | 上海禾未网络科技有限公司 | Distributed multilayer battery management system and method |
| CN102275524A (en) * | 2011-06-30 | 2011-12-14 | 奇瑞汽车股份有限公司 | Diagnostic system and diagnostic method for power battery packs |
| CN102353906A (en) * | 2011-07-07 | 2012-02-15 | 杭州电子科技大学 | Charge monitoring system for distributed storage battery pack |
| CN102353906B (en) * | 2011-07-07 | 2013-06-26 | 杭州电子科技大学 | Charge monitoring system for distributed storage battery pack |
| CN102412425A (en) * | 2011-09-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Method and device for managing batteries |
| CN103076768A (en) * | 2011-10-25 | 2013-05-01 | 比亚迪股份有限公司 | Distributive battery management system and identification distribution method thereof |
| CN105703425A (en) * | 2016-03-01 | 2016-06-22 | 上海航盛实业有限公司 | Battery management system |
| CN111766520A (en) * | 2020-07-09 | 2020-10-13 | 陕西正通电子科技有限公司 | High-speed acquisition method for monitoring data of distributed storage battery |
| CN112271410A (en) * | 2020-10-20 | 2021-01-26 | 中国第一汽车股份有限公司 | Power battery and driving equipment |
| WO2022083163A1 (en) * | 2020-10-20 | 2022-04-28 | 中国第一汽车股份有限公司 | Power battery and driving device |
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| CN100505466C (en) | 2009-06-24 |
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