CN105480106B - Electric automobile lithium battery managing device and control method - Google Patents
Electric automobile lithium battery managing device and control method Download PDFInfo
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- CN105480106B CN105480106B CN201510808761.4A CN201510808761A CN105480106B CN 105480106 B CN105480106 B CN 105480106B CN 201510808761 A CN201510808761 A CN 201510808761A CN 105480106 B CN105480106 B CN 105480106B
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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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- 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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- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of electric automobile lithium battery managing device and control method, lithium battery group that the present invention is sequentially connected in series including primary processor, memory, display, m, n data selector and from processor, reduce the usage amount from processor, the voltage of any one battery core can be read from processor, primary processor is by the detection voltage A of each battery core and normal voltage interval [A1, A2] compare, and according to the break-make of judged result control charge relay and electric discharge relay.The present invention has the characteristics of can effectively reducing battery management cost, raising accuracy of detection, security and good economy performance.
Description
Technical field
The present invention relates to batteries of electric automobile administrative skill field, more particularly, to one kind can effectively reduce battery management into
Originally, accuracy of detection is high, security is good electric automobile lithium battery managing device and control method.
Background technology
The electric automobile of each outfit lithium battery all needs to be equipped with BMS battery management systems, common many battery core series connection lithiums
The BMS systems of battery pack are made up of multiple from processor and a primary processor, the lithium battery being each made up of series connection battery core
Group needs to be connected from processor with one, lithium battery group need it is more from processor, BMS system costs are also higher；Such as
Fruit detects the voltage of each battery core, then needs more from processor.
The increase of cost how is reduced while the performance of BMS systems is improved, is that automobile and battery production enterprise are urgent
Need the technical barrier solved.
Chinese patent mandate publication number：CN105006851A, authorizes publication date on October 28th, 2015, discloses a kind of lithium
Battery management system, including for providing the battery pack being made up of some lithium cells of power；And for controlling the battery
The battery bag output switch that group output current is turned on or off, and the battery bag output switch is open type switch；And use
In the battery management system control unit for controlling the battery bag output switch closure or openness；And exported with the battery bag
The output resistance that switch in parallel is set.The weak point of the invention is, it is impossible to detect the voltage of each battery core.
The content of the invention
The goal of the invention of the present invention is to overcome BMS systems of the prior art can not detect that single battery core, cost are high
Not enough can effectively reduce the electric automobile lithium battery pipe that battery management cost, accuracy of detection are high, security is good there is provided a kind of
Manage device and control method.
To achieve these goals, the present invention uses following technical scheme：
A kind of electric automobile lithium battery managing device, including primary processor, memory, display, the m lithiums being sequentially connected in series
Battery pack, n1 data selector and from processor；Each lithium battery group includes the battery core of n1 series connection, each lithium battery group
N1 battery core electrically connected respectively with n1 data selector, it is n1 data selector, electric successively from processor and primary processor
Connection, charger is electrically connected by charge relay with m lithium battery group, and the motor of electric automobile passes through relay and the m of discharging
Individual lithium battery group electrical connection, memory, display, charge relay and electric discharge relay are electrically connected with primary processor.
The BMS systems of common many battery core serial lithium battery groups are made up of multiple from processor and a primary processor,
Each lithium battery group being made up of series connection battery core needs to be connected from processor with one, lithium battery group need from processor
More, BMS system costs are also higher.
The present invention includes primary processor, memory, display, the individual lithium battery groups being sequentially connected in series of m, n1 data selector
With from processor, the usage amount from processor is reduced, the voltage of any one battery core, primary processor can be read from processor
By the detection voltage A of each battery core and normal voltage interval [A1, A2] compare, and charge relay is controlled according to judged result
With electric discharge relay break-make, so as to effectively prevent each lithium battery group overcharge and overdischarge, it is ensured that each lithium battery group
Safety, improve the service life of each lithium battery group.
The present invention can detect the magnitude of voltage of each battery core, accurately obtain the voltage change conditions of each battery core, and according to every
The voltage of individual battery core accurately carries out charge and discharge control, can effectively reduce battery management cost, improve accuracy of detection, security and warp
Ji property is good.
Preferably, also including the first temperature sensor in each lithium battery group, each first temperature sensor
Electrically connected with primary processor.
Preferably, also including the second temperature sensor and alarm for being used to detect environment temperature, second temperature sensing
Device and alarm are electrically connected with primary processor.
Preferably, also including the blower fan for being used to cool to each lithium battery group, blower fan is electrically connected with primary processor.
Preferably, each lithium battery group includes housing, housing is provided with the voltage being connected respectively with n1 battery core and connect
Mouthful, each voltage interface is electrically connected with n1 data selector respectively.
A kind of control method of electric automobile lithium battery managing device, comprises the following steps：
Normal voltage interval [the A of each battery core is provided with (6-1) memory1, A2], primary processor is sent to from processor
Every the order of the voltage of the battery core in time T cycle detection each lithium battery group；
By the battery core in each lithium battery group according to series sequence number consecutively be 1 ..., n1, by each data selector
Numbering is 1 respectively ..., n1；The data selector for being k1 with numbering by the battery core that numbering is k1 in each lithium battery group is connected,
K1 ∈ [1, n1], make charge relay and electric discharge relay adhesive；
(6-2) is successively read n1 × m battery core of the 1st to n1 data selector collection from processor in time T
Voltage data；
(6-3) primary processor is by the detection voltage A of each battery core and normal voltage interval [A1, A2] compare：
As the detection voltage A ＞ A of any one battery core2, primary processor control charge relay disconnection；
As the detection voltage A ＜ A of any one battery core1, primary processor control electric discharge relay disconnection；
(6-4) is satisfied by detection voltage A ∈ [A when any one battery core1, A2] when, primary processor control
Charge relay processed and the electric discharge equal adhesive of relay.
Preferably, also including the first temperature sensor in each lithium battery group, each first temperature sensor
Electrically connect, also comprise the following steps with primary processor：
Normal temperature interval [B is provided with memory1, B2], each first temperature sensor detects each lithium battery group respectively
Temperature；
Primary processor is by the detection temperature B of each lithium battery group and normal temperature interval [B1, B2] compare：
As the detection voltage B ＞ B of any one lithium battery group2, primary processor control electric discharge relay disconnection；
As the detection voltage B ＜ B of any one lithium battery group1, primary processor control charge relay disconnection.
When any lithium battery group is satisfied by detection temperature B ∈ [B1, B2] when, primary processor controls charge relay and electric discharge
The equal adhesive of relay.
Preferably, also including the second temperature sensor and alarm for being used to detect environment temperature, second temperature sensing
Device and alarm are electrically connected with primary processor, are also comprised the following steps：
(8-1) second temperature sensor is detected and obtains ambient temperature signal c1 (t), and normal temperature value is provided with memory
C2, primary processor calculates the average value c3 (t) of the temperature signal of each the first temperature sensor, and primary processor utilizes following formula
Calculate the temperature signal u (t) of collection：
U (t)=c3 (t)2+(c3(t)-c1(t))2+(c3(t)-c2)2, i initial value is set as 1, sets j initial value
For 1, fault threshold E is provided with memory；
(8-2) calculates u (t) local maximum and obtains coenvelope line u by cubic spline interpolationup(t)；
(8-3) calculates signal u (t) local minimum and obtains lower envelope line u by cubic spline interpolationlow(t)；
(8-4) defines average envelope m1(t)=[uup(t)+ulow(t)]/2；
(8-5) utilizes formula hj(t)=u (t)-mj(t) calculating difference hj(t)；
(8-6) is if hj(t) IMF screening stop conditions are unsatisfactory for, make u (t)=hj(t), j values increase by 1, return to step (8-2)
To hj(t) proceed to decompose；Work as hj(t) IMF screening stop conditions are met, then obtain the 1st IMF components c of u (t) signals1
(t)=hj(t)；
(8-7) utilizes formula ri(t)=u (t)-ci(t) residual components r is calculatedi(t)：
(8-8) works as ri(t) when being unsatisfactory for decomposing stop condition, u (t)=r is madei(t),I values are made to increase by 1, return to step (8-
2) to ri(t) continue to decompose；When meeting screening stop condition, if n=i, n IMF components c is obtainedi(t) with 1 residual components
rn(t), u (t) can be then expressed asExtract ci(t) N number of sample value ci(k), k=1,2 ..., N；
(8-9) utilizes formulaU (t) each component energy is calculated, compares u (t) each component energy
Emax, choose E1, E2..., EnMiddle maximum Emax, work as EmaxDuring ＞ E, show that each lithium battery group temperature is too high, primary processor control
Alarm alert processed；
Wherein, (8-6), the screening stop condition of (8-8) use imitative Cauchy's test for convergence,
Work as SDSieve and stop during ＜ ε, ε is generally between 0.2 and 0.3；Decomposition stop condition is residual signal ri(t) it is changed into dull letter
Number.
Preferably, also including the blower fan for being used to cool to each lithium battery group, blower fan is electrically connected with primary processor, also wrapped
Include following steps：
Work as EmaxDuring ＞ E, primary processor control blower fan work is the cooling of each lithium battery group.
Preferably, also comprising the following steps between step (6-2) and (6-3)：
The voltage of the battery core of each lithium battery group is added by primary processor, obtains the voltage U of each lithium battery groupPoint；Will be each
The voltage of individual lithium battery group is added and obtains total voltage UAlways；
Primary processor control display shows the voltage U of each lithium battery groupPointWith total voltage UAlways。
Therefore, the present invention has the advantages that：The magnitude of voltage of each battery core is can detect, each battery core is accurately obtained
Voltage change conditions, and charge and discharge control is accurately carried out according to the voltage of each battery core, it can effectively reduce battery management cost, carry
High measurement accuracy, security and good economy performance.
Brief description of the drawings
Fig. 1 is a kind of theory diagram of the present invention；
Fig. 2 is a kind of flow chart of the present invention.
In figure：Primary processor 1, memory 2, display 3, lithium battery group 4, data selector 5, from processor 6, battery core 7,
Charger 9, charge relay 10, motor 11, electric discharge relay 12, the first temperature sensor 13, second temperature sensor 14, report
Alert device 15, blower fan 16.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1
Embodiment as shown in Figure 1 is a kind of electric automobile lithium battery managing device, including primary processor 1, memory 2,
Display 3,4 be sequentially connected in series lithium battery group 4,13 data selectors 5 and from processor 6；Each lithium battery group includes
The battery core 7 of 13 series connection, the positive pole of 13 battery cores of each lithium battery group is electrically connected with 13 data selectors respectively, 13 numbers
It is sequentially connected electrically according to selector, from processor and primary processor, charger 9 passes through charge relay 10 and 4 lithium battery group electricity
Connection, the motor 11 of electric automobile electrically connected by the relay 12 that discharges with 4 lithium battery groups, memory, display, charging after
Electrical equipment and electric discharge relay are electrically connected with primary processor.
Also include the first temperature sensor 13 in each lithium battery group, each first temperature sensor with main place
Manage device electrical connection.Each lithium battery group includes housing, and housing is provided with the voltage interface being connected respectively with 13 battery cores, each
Voltage interface is electrically connected with 13 data selectors respectively.
As shown in Fig. 2 a kind of control method of electric automobile lithium battery managing device, comprises the following steps：
Step 100, the voltage of the battery core in each lithium battery group is detected
Normal voltage interval [the A of each battery core is provided with memory1, A2], primary processor to from processor send every when
Between battery core in T cycle detections each lithium battery groups voltage order；
By the battery core in each lithium battery group according to series sequence number consecutively be 1 ..., 13, by each data selector
Numbering is 1 respectively ..., 13；The data selector for being k1 with numbering by the battery core that numbering is k1 in each lithium battery group is connected,
K1 ∈ [1,13], make charge relay and electric discharge relay adhesive；
Step 200, the voltage of each battery core is read
13 × 4 battery cores of the 1st to 13 data selector collection are successively read in time T=20ms from processor
Voltage data；
Step 300, voltage control charge relay and electric discharge relay on-off are detected according to battery core
Primary processor is by the detection voltage A of each battery core and normal voltage interval [A1, A2] compare：
As the detection voltage A ＞ A of any one battery core2, primary processor control charge relay disconnection；
As the detection voltage A ＜ A of any one battery core1, primary processor control electric discharge relay disconnection；
Step 400, according to temperature control charge relay and electric discharge relay on-off
Normal temperature interval [B is provided with memory1, B2], each first temperature sensor detects each lithium battery group respectively
Temperature；
Primary processor is by the detection temperature B of each lithium battery group and normal temperature interval [B1, B2] compare：
As the detection voltage B ＞ B of any one lithium battery group2, primary processor control electric discharge relay disconnection；
As the detection voltage B ＜ B of any one lithium battery group1, primary processor control charge relay disconnection.
When any lithium battery group is satisfied by detection temperature B ∈ [B1, B2] when, primary processor controls charge relay and electric discharge
The equal adhesive of relay；
Step 500, the voltage U of each lithium battery group is shownPointWith total voltage UAlways
The voltage of the battery core of each lithium battery group is added by primary processor, obtains the voltage U of each lithium battery groupPoint；Will be each
The voltage of individual lithium battery group is added and obtains total voltage UAlways；
Primary processor control display shows the voltage U of each lithium battery groupPointWith total voltage UAlways；
When any one battery core is satisfied by detection voltage A ∈ [A1, A2] when, primary processor control charge relay and electric discharge after
The equal adhesive of electrical equipment.
Embodiment 2
Embodiment 2 includes all structures and the step part of embodiment 1, as shown in figure 1, embodiment 2 also includes being used for
The second temperature sensor 14 and alarm 15 of environment temperature are detected, second temperature sensor and alarm are electric with primary processor
Connection；Also include the blower fan 16 for being used to cool to each lithium battery group, blower fan is electrically connected with primary processor.
Also comprise the following steps：
(8-1) second temperature sensor is detected and obtains ambient temperature signal c1 (t), and normal temperature value is provided with memory
C2, primary processor calculates the average value c3 (t) of the temperature signal of each the first temperature sensor, and primary processor utilizes following formula
Calculate the temperature signal u (t) of collection：
U (t)=c3 (t)2+(c3(t)-c1(t))2+(c3(t)-c2)2, i initial value is set as 1, sets j initial value
For 1, fault threshold E is provided with memory；
(8-2) calculates u (t) local maximum and obtains coenvelope line u by cubic spline interpolationup(t)；
(8-3) calculates signal u (t) local minimum and obtains lower envelope line u by cubic spline interpolationlow(t)；
(8-4) defines average envelope m1(t)=[uup(t)+ulow(t)]/2；
(8-5) utilizes formula hj(t)=u (t)-mj(t) calculating difference hj(t)；
(8-6) is if hj(t) IMF screening stop conditions are unsatisfactory for, make u (t)=hj(t), j values increase by 1, return to step (8-2)
To hj(t) proceed to decompose；Work as hj(t) IMF screening stop conditions are met, then obtain the 1st IMF components c of u (t) signals1
(t)=hj(t)；
(8-7) utilizes formula ri(t)=u (t)-ci(t) residual components r is calculatedi(t)；
(8-8) works as ri(t) when being unsatisfactory for decomposing stop condition, u (t)=r is madei(t) i values, are made to increase by 1, return to step (8-
2) to ri(t) continue to decompose；When meeting screening stop condition, if n=i, n IMF components c is obtainedi(t) with 1 residual components
rn(t), u (t) can be then expressed asExtract ci(t) N number of sample value ci(k), k=1,2 ..., N；
(8-9) utilizes formulaU (t) each component energy is calculated, compares u (t) each component energy
Emax, choose E1, E2..., EnMiddle maximum Emax, work as EmaxDuring ＞ E, show that each lithium battery group temperature is too high, primary processor control
Alarm alert processed；Meanwhile, primary processor control blower fan work is the cooling of each lithium battery group.
Wherein, (8-6), the screening stop condition of (8-8) use imitative Cauchy's test for convergence,
Work as SDSieve and stop during ＜ ε, ε is generally between 0.2 and 0.3；Decomposition stop condition is residual signal ri(t) it is changed into dull letter
Number.
It should be understood that the present embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that
Read after the content of the invention lectured, those skilled in the art can make various changes or modifications to the present invention, these etc.
Valency form equally falls within the application appended claims limited range.
Claims (10)
1. a kind of electric automobile lithium battery managing device, including primary processor (1), display (3), the m lithium electricity being sequentially connected in series
Pond group (4) and from processor (6)；It is characterized in that, in addition to memory (2) and n1 data selector (5)；Each lithium battery group
Include the battery core (7) of n1 series connection, n1 battery core of each lithium battery group is electrically connected with n1 data selector respectively, n1
Data selector, it is sequentially connected electrically from processor and primary processor, it is electric with m lithium that charger (9) passes through charge relay (10)
Pond group electrical connection, the motor (11) of electric automobile is electrically connected by the relay that discharges (12) with m lithium battery group, memory, is shown
Show that device, charge relay and electric discharge relay are electrically connected with primary processor.
2. electric automobile lithium battery managing device according to claim 1, it is characterized in that, in addition to located at each lithium battery
The first temperature sensor (13) in group, each first temperature sensor is electrically connected with primary processor.
3. electric automobile lithium battery managing device according to claim 2, it is characterized in that, in addition to for detecting environment temperature
The second temperature sensor (14) and alarm (15) of degree, second temperature sensor and alarm are electrically connected with primary processor.
4. electric automobile lithium battery managing device according to claim 3, it is characterized in that, in addition to for giving each lithium electricity
The blower fan (16) of pond group cooling, blower fan is electrically connected with primary processor.
5. the electric automobile lithium battery managing device according to claim 1-4 any one, it is characterized in that, each lithium battery
Group includes housing, and housing is provided with the voltage interface that is connected respectively with n1 battery core, each voltage interface respectively with n1 numbers
Electrically connected according to selector.
6. a kind of control method of electric automobile lithium battery managing device suitable for described in claim 1, it is characterized in that, including
Following steps：
Normal voltage interval [the A of each battery core is provided with (6-1) memory1, A2], primary processor to from processor send every
The order of the voltage of battery core in each lithium battery group of time T cycle detection；
By the battery core in each lithium battery group according to series sequence number consecutively be 1 ..., n1 distinguishes each data selector
Numbering is 1 ..., n1；
The data selector for being k1 with numbering by the battery core that numbering is k1 in each lithium battery group is connected, and k1 ∈ [1, n1] make
Charge relay and electric discharge relay adhesive；
(6-2) is successively read the voltage of n1 × m battery core of the 1st to n1 data selector collection from processor in time T
Data；
(6-3) primary processor is by the detection voltage A of each battery core and normal voltage interval [A1, A2] compare：
As the detection voltage A ＞ A of any one battery core2, primary processor control charge relay disconnection；
As the detection voltage A ＜ A of any one battery core1, primary processor control electric discharge relay disconnection；
(6-4) is satisfied by detection voltage A ∈ [A when any one battery core1, A2] when, primary processor control charge relay and electric discharge after
The equal adhesive of electrical equipment.
7. the control method of electric automobile lithium battery managing device according to claim 6, in addition to located at each lithium electricity
The first temperature sensor in the group of pond, each first temperature sensor is electrically connected with primary processor, it is characterized in that, in addition to such as
Lower step：
Normal temperature interval [B is provided with memory1, B2], each the first temperature sensor detects the temperature of each lithium battery group respectively
Degree；
Primary processor is by the detection temperature B of each lithium battery group and normal temperature interval [B1, B2] compare：
As the detection voltage B ＞ B of any one lithium battery group2, primary processor control electric discharge relay disconnection；
As the detection voltage B ＜ B of any one lithium battery group1, primary processor control charge relay disconnection；
When any lithium battery group is satisfied by detection temperature B ∈ [B1, B2] when, primary processor controls charge relay and electric discharge relay
The equal adhesive of device.
8. the control method of electric automobile lithium battery managing device according to claim 7, in addition to for detecting environment
The second temperature sensor and alarm of temperature, second temperature sensor and alarm are electrically connected with primary processor, its feature
It is also to comprise the following steps：
(8-1) second temperature sensor is detected and obtains ambient temperature signal c1 (t), and normal temperature value c2 is provided with memory,
Primary processor calculates the average value c3 (t) of the temperature signal of each the first temperature sensor, and primary processor utilizes following formula meters
Calculate the temperature signal u (t) of collection：
U (t)=c3 (t)2+(c3(t)-c1(t))2+(c3(t)-c2)2, i initial value is set as 1, sets j initial value as 1,
Fault threshold E is provided with memory；
(8-2) calculates u (t) local maximum and obtains coenvelope line u by cubic spline interpolationup(t)；
(8-3) calculates signal u (t) local minimum and obtains lower envelope line u by cubic spline interpolationlow(t)；
(8-4) defines average envelope m1(t)=[uup(t)+ulow(t)]/2；
(8-5) utilizes formula hj(t)=u (t)-mj(t) calculating difference hj(t)；
(8-6) is if hj(t) IMF screening stop conditions are unsatisfactory for, make u (t)=hj(t), j values increase by 1, return to step (8-2) is to hj
(t) proceed to decompose；Work as hj(t) IMF screening stop conditions are met, then obtain the 1st IMF components c of u (t) signals1(t)=
hj(t)；
(8-7) utilizes formula ri(t)=u (t)-ci(t) residual components r is calculatedi(t)；
(8-8) works as ri(t) when being unsatisfactory for decomposing stop condition, u (t)=r is madei(t) i values, are made to increase by 1, return to step (8-2) is right
ri(t) continue to decompose；When meeting screening stop condition, if n=i, n IMF components c is obtainedi(t) with 1 residual components rn
(t), u (t) can be then expressed asExtract ci(t) N number of sample value ci(k), k=1,2 ..., N；
(8-9) utilizes formulaU (t) each component energy is calculated, compares u (t) each component energy Emax, choosing
Take E1, E2..., EnMiddle maximum Emax, work as EmaxDuring ＞ E, show that each lithium battery group temperature is too high, primary processor control alarm
Device alert；
Wherein, (8-6), the screening stop condition of (8-8) use imitative Cauchy's test for convergence,
Work as SDSieve and stop during ＜ ε, ε is generally between 0.2 and 0.3；Decomposition stop condition is residual signal ri(t) it is changed into dull letter
Number.
9. the control method of electric automobile lithium battery managing device according to claim 8, in addition to for giving each lithium
The blower fan of battery pack cooling, blower fan is electrically connected with primary processor, it is characterized in that, also comprise the following steps：
Work as EmaxDuring ＞ E, primary processor control blower fan work is the cooling of each lithium battery group.
10. the control method of the electric automobile lithium battery managing device according to claim any one of 6-9, it is characterized in that,
Also comprise the following steps between step (6-2) and (6-3)：
The voltage of the battery core of each lithium battery group is added by primary processor, obtains the voltage U of each lithium battery groupPoint；By each lithium
The voltage of battery pack is added and obtains total voltage UAlways；
Primary processor control display shows the voltage U of each lithium battery groupPointWith total voltage UAlways。
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| CN201510808761.4A CN105480106B (en) | 2015-11-20 | 2015-11-20 | Electric automobile lithium battery managing device and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808761.4A CN105480106B (en) | 2015-11-20 | 2015-11-20 | Electric automobile lithium battery managing device and control method |
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| CN106684975A (en) * | 2016-12-19 | 2017-05-17 | 江苏嘉钰新能源技术有限公司 | Battery management system of electric motorcycle based on lithium battery |
| CN110828913B (en) | 2018-08-13 | 2023-01-20 | 台达电子工业股份有限公司 | Battery charging method and charging system thereof |
| CN110518656B (en) * | 2019-07-30 | 2022-12-13 | 安徽恒胜物联网科技有限公司 | Electric motor car battery safety protection integrated system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5764027A (en) * | 1996-06-21 | 1998-06-09 | Ford Global Technologies, Inc. | Method and apparatus for battery charge balancing |
| JP2002008734A (en) * | 2000-06-23 | 2002-01-11 | Honda Motor Co Ltd | Detecting method for battery voltage and detecting device for battery voltage |
| CN100375365C (en) * | 2005-06-30 | 2008-03-12 | 复旦大学 | Intelligent management circuit structure for battery |
| KR100906907B1 (en) * | 2006-10-10 | 2009-07-08 | 현대자동차주식회사 | Car battery management system |
| CN101488671B (en) * | 2009-02-24 | 2011-01-12 | 浙江大学 | Management module for multi-section series lithium ionic cell pack |
| CN201426046Y (en) * | 2009-04-21 | 2010-03-17 | 杜逢镭 | Power management system for car high power lithium battery stack with balancing function |
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