CN105480106A - Management device and control method of electric automobile lithium battery - Google Patents
Management device and control method of electric automobile lithium battery Download PDFInfo
- Publication number
- CN105480106A CN105480106A CN201510808761.4A CN201510808761A CN105480106A CN 105480106 A CN105480106 A CN 105480106A CN 201510808761 A CN201510808761 A CN 201510808761A CN 105480106 A CN105480106 A CN 105480106A
- Authority
- CN
- China
- Prior art keywords
- cell group
- primary processor
- lithium cell
- voltage
- battery core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a management device and control method of an electric automobile lithium battery. The management device comprises a master processor, a memory, a display, m lithium battery packs in sequential connection in series, n data selectors and a slave processor. The usage amount of the slave processor is reduced, and the slave processor can read the voltage of any electric core; the master processor enables a detecting voltage A of each electric core to be compared with a standard voltage section [A1, A2], and controls the power on and power off of a charge relay and a discharge relay according to the judged result. The management device disclosed by the invention has the characteristics of being capable of effectively reducing the cost of battery management, improving the detection precision and being good in safety and economy.
Description
Technical field
The present invention relates to batteries of electric automobile management technique field, especially relate to and a kind ofly effectively can reduce battery management cost, accuracy of detection is high, safety is good electric automobile lithium battery management devices and control method.
Background technology
Each electronlmobil being equipped with lithium cell all needs to be equipped with BMS battery management system, the BMS system of common many battery cores serial lithium battery group is made up of from treater and a primary processor multiple, each lithium cell group be made up of series connection battery core needs to be connected from treater with one, it is more from treater that lithium cell group needs more, and BMS system cost is also higher; If the voltage of each battery core all will be detected, then need more from treater.
While the performance improving BMS system, how reduce the increase of cost, be automobile and battery production enterprise technical barrier in the urgent need to address.
Chinese patent mandate publication number: CN105006851A, authorizes publication date on October 28th, 2015, disclosing a kind of lithium battery management system, comprising the battery pack be made up of some lithium cells for providing power; And for controlling the power brick output switch that described battery pack outgoing current is turned on or off, and described power brick output switch is open type switch; And for controlling the battery management system control unit of described power brick output switch closure or openness; And the output resistance to be arranged in parallel with described power brick output switch.The weak point of this invention is, cannot detect the voltage of each battery core.
Summary of the invention
Goal of the invention of the present invention cannot detect single battery core, deficiency that cost is high to overcome BMS system of the prior art, provides a kind ofly effectively to reduce battery management cost, accuracy of detection is high, safety is good electric automobile lithium battery management devices and control method.
To achieve these goals, the present invention is by the following technical solutions:
A kind of electric automobile lithium battery management devices, comprises primary processor, lithium cell group that memory device, telltale, m connect successively, a n1 data selector and from treater; Each lithium cell group includes the battery core of n1 series connection, n1 battery core of each lithium cell group is electrically connected with n1 data selector respectively, n1 data selector, to be electrically connected successively from treater and primary processor, battery charger is electrically connected with m lithium cell group by charge relay, the motor of electronlmobil is electrically connected with m lithium cell group by electric discharge relay, and memory device, telltale, charge relay and electric discharge relay are all electrically connected with primary processor.
The BMS system of common many battery cores serial lithium battery group is made up of from treater and a primary processor multiple, each lithium cell group be made up of series connection battery core needs to be connected from treater with one, it is more from treater that lithium cell group needs more, and BMS system cost is also higher.
The present invention includes primary processor, lithium cell group that memory device, telltale, m connect successively, a n1 data selector and from treater, decrease the use amount from treater, can read the voltage of any one battery core from treater, primary processor is by the detection voltage A of each battery core and normal voltage interval [A
1, A
2] compare, and control the break-make of charge relay and electric discharge relay according to judged result, thus effectively prevent each overcharge of lithium cell group and overdischarge, ensure that the safety of each lithium cell group, improve the service life of each lithium cell group.
The present invention can detect the magnitude of voltage of each battery core, accurately obtains the voltage change conditions of each battery core, and accurately carries out charge and discharge control according to the voltage of each battery core, effectively can reduce battery management cost, improve accuracy of detection, safety and good economy performance.
As preferably, also comprise the first temperature sensor be located in each lithium cell group, each first temperature sensor is all electrically connected with primary processor.
As preferably, also comprise the second temperature sensor for testing environment temperature and annunciator, the second temperature sensor and annunciator are all electrically connected with primary processor.
As preferably, also comprise for the blower fan of each lithium cell group cooling, blower fan is electrically connected with primary processor.
As preferably, each lithium cell group includes housing, and housing is provided with the voltage interface be connected with n1 battery core respectively, and each voltage interface is electrically connected with n1 data selector respectively.
A control method for electric automobile lithium battery management devices, comprises the steps:
(6-1) the normal voltage interval [A of each battery core is provided with in memory device
1, A
2], primary processor is to the order of the voltage of the battery core sent from treater in per each lithium cell group of interval T cycle detection;
Be 1 by the battery core in each lithium cell group according to series sequence number consecutively ..., n1, is numbered 1 respectively by each data selector ..., n1; The battery core being numbered k1 in each lithium cell group is all connected with the data selector being numbered k1, k1 ∈ [1, n], makes charge relay and the adhesive of electric discharge relay;
(6-2) in time T, the voltage data of n1 × m the battery core that 1 to n1 data selector gathers is read successively from treater;
(6-3) primary processor is by the detection voltage A of each battery core and normal voltage interval [A
1, A
2] compare:
As the detection voltage A > A of any one battery core
2, primary processor controls charge relay and disconnects;
As the detection voltage A < A of any one battery core
1, primary processor controlled discharge relay disconnects;
(6-4) voltage A ∈ [A is detected when any one battery core all meets
1, A
2] time, primary processor control
Charge relay processed and the equal adhesive of electric discharge relay.
As preferably, also comprise the first temperature sensor be located in each lithium cell group, each first temperature sensor is all electrically connected with primary processor, also comprises the steps:
Standard temperature interval [B is provided with in memory device
1, B
2], each the first temperature sensor detects the temperature of each lithium cell group respectively;
Primary processor is by the detected temperatures B of each lithium cell group and standard temperature interval [B
1, B
2] compare:
As the detection voltage B > B of any one lithium cell group
2, primary processor controlled discharge relay disconnects;
As the detection voltage B < B of any one lithium cell group
1, primary processor controls charge relay and disconnects.
When arbitrary lithium cell group all meets detected temperatures B ∈ [B
1, B
2] time, primary processor controls charge relay and the equal adhesive of electric discharge relay.
As preferably, also comprise the second temperature sensor for testing environment temperature and annunciator, the second temperature sensor and annunciator are all electrically connected with primary processor, also comprise the steps:
(8-1) the second temperature sensor detects and obtains ambient temperature signal c1 (t), standard temperature value c2 is provided with in memory device, primary processor calculates aviation value c3 (t) of the temperature signal of each the first temperature sensor, temperature signal u (t) that primary processor utilizes following formulae discovery to gather:
U (t)=c3 (t)
2+ (c3 (t)-c1 (t))
2+ (c3 (t)-c2)
2, the initial value of setting i is 1, and the initial value of setting j is 1, is provided with fault threshold E in memory device;
(8-2) calculate the local maximum of u (t) and obtain coenvelope line u by cubic spline interpolation
up(t);
(8-3) calculate the local minimum of signal u (t) and obtain lower envelope line u by cubic spline interpolation
low(t);
(8-4) average envelope m is defined
1(t)=[u
up(t)+u
low(t)]/2;
(8-5) formula h is utilized
j(t)=u (t)-m
j(t) calculated difference h
j(t);
If (8-6) h
jt () does not meet IMF and sieves stop condition, make u (t)=h
jt (), j value increase by 1, returns step (8-2) to h
jt () proceeds to decompose; Work as h
jt () meets IMF and sieves stop condition, then obtain the 1st IMF component c of u (t) signal
1(t)=h
j(t);
(8-7) formula r is utilized
i(t)=u (t)-c
it () calculates residual components r
i(t):
(8-8) r is worked as
iwhen () does not meet decomposition stop condition t, make u (t)=r
it (), makes i value increase by 1, return step (8-2) to r
it () continues to decompose; When satisfied screening stop condition, if n=i, obtain n IMF component c
i(t) and 1 residual components r
nt (), u (t) then can be expressed as
extract c
in number of sample value c of (t)
i(k), k=1,2 ..., N;
(8-9) formula is utilized
calculate each component energy of u (t), compare each component energy E of u (t)
max, choose E
1, E
2..., E
nmiddle maxim E
max, work as E
maxduring > E, show that each lithium cell group temperature is too high, primary processor controls annunciator and sends alarm message;
Wherein, the screening stop condition of (8-6), (8-8) adopts imitative Cauchy's test for convergence,
work as S
dduring < ε, screening stops, and ε is usually between 0.2 and 0.3; Decomposing stop condition is residual signal r
it () becomes monotone function.
As preferably, also comprise for the blower fan of each lithium cell group cooling, blower fan is electrically connected with primary processor, also comprises the steps:
Work as E
maxduring > E, primary processor controls blower fan work, is the cooling of each lithium cell group.
As preferably, also comprise the steps: between step (6-2) and (6-3)
The voltage of the battery core of each lithium cell group is added by primary processor, obtains the voltage U of each lithium cell group
point; The voltage of each lithium cell group is added and obtains total voltage U
always;
Primary processor controls the voltage U that telltale shows each lithium cell group
pointwith total voltage U
always.
Therefore, the present invention has following beneficial effect: the magnitude of voltage that can detect each battery core, the voltage change conditions of each battery core of accurate acquisition, and accurately carry out charge and discharge control according to the voltage of each battery core, effectively can reduce battery management cost, improve accuracy of detection, safety and good economy performance.
Accompanying drawing explanation
Fig. 1 is a kind of functional block diagram of the present invention;
Fig. 2 is a kind of diagram of circuit of the present invention.
In figure: primary processor 1, memory device 2, telltale 3, lithium cell group 4, data selector 5, from treater 6, battery core 7, battery charger 9, charge relay 10, motor 11, electric discharge relay 12, first temperature sensor 13, second temperature sensor 14, annunciator 15, blower fan 16.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
Embodiment is as shown in Figure 1 a kind of electric automobile lithium battery management devices, comprises primary processor 1, lithium cell group 4,13 data selectors 5 that memory device 2, telltale 3,4 are connected successively and from treater 6; Each lithium cell group includes the battery core 7 of 13 series connection, the positive pole of 13 battery cores of each lithium cell group is electrically connected with 13 data selectors respectively, 13 data selectors, to be electrically connected successively from treater and primary processor, battery charger 9 is electrically connected with 4 lithium cell groups by charge relay 10, the motor 11 of electronlmobil is electrically connected with 4 lithium cell groups by electric discharge relay 12, and memory device, telltale, charge relay and electric discharge relay are all electrically connected with primary processor.
Also comprise the first temperature sensor 13 be located in each lithium cell group, each first temperature sensor is all electrically connected with primary processor.Each lithium cell group includes housing, and housing is provided with the voltage interface be connected with 13 battery cores respectively, and each voltage interface is electrically connected with 13 data selectors respectively.
As shown in Figure 2, a kind of control method of electric automobile lithium battery management devices, comprises the steps:
Step 100, detects the voltage of the battery core in each lithium cell group
Normal voltage interval [the A of each battery core is provided with in memory device
1, A
2], primary processor is to the order of the voltage of the battery core sent from treater in per each lithium cell group of interval T cycle detection;
Be 1 by the battery core in each lithium cell group according to series sequence number consecutively ..., 13, each data selector is numbered 1 respectively ..., 13; The battery core being numbered k1 in each lithium cell group is all connected with the data selector being numbered k1, k1 ∈ [1,13], makes charge relay and the adhesive of electric discharge relay;
Step 200, reads the voltage of each battery core
In time T=20ms, the voltage data of 13 × 4 battery cores that the 1 to 13 data selector gathers is read successively from treater;
Step 300, detects voltage control charge relay and electric discharge relay on-off according to battery core
Primary processor is by the detection voltage A of each battery core and normal voltage interval [A
1, A
2] compare:
As the detection voltage A > A of any one battery core
2, primary processor controls charge relay and disconnects;
As the detection voltage A < A of any one battery core
1, primary processor controlled discharge relay disconnects;
Step 400, controls charge relay and electric discharge relay on-off according to temperature
Standard temperature interval [B is provided with in memory device
1, B
2], each the first temperature sensor detects the temperature of each lithium cell group respectively;
Primary processor is by the detected temperatures B of each lithium cell group and standard temperature interval [B
1, B
2] compare:
As the detection voltage B > B of any one lithium cell group
2, primary processor controlled discharge relay disconnects;
As the detection voltage B < B of any one lithium cell group
1, primary processor controls charge relay and disconnects.
When arbitrary lithium cell group all meets detected temperatures B ∈ [B
1, B
2] time, primary processor controls charge relay and the equal adhesive of electric discharge relay;
Step 500, shows the voltage U of each lithium cell group
pointwith total voltage U
always
The voltage of the battery core of each lithium cell group is added by primary processor, obtains the voltage U of each lithium cell group
point; The voltage of each lithium cell group is added and obtains total voltage U
always;
Primary processor controls the voltage U that telltale shows each lithium cell group
pointwith total voltage U
always;
Voltage A ∈ [A is detected when any one battery core all meets
1, A
2] time, primary processor controls charge relay and the equal adhesive of electric discharge relay.
Embodiment 2
Embodiment 2 comprises all structures and the step part of embodiment 1, and as shown in Figure 1, embodiment 2 also comprises and being all electrically connected with primary processor for the second temperature sensor 14 of testing environment temperature and annunciator 15, second temperature sensor and annunciator; Also comprise the blower fan 16 for lowering the temperature to each lithium cell group, blower fan is electrically connected with primary processor.
Also comprise the steps:
(8-1) the second temperature sensor detects and obtains ambient temperature signal c1 (t), standard temperature value c2 is provided with in memory device, primary processor calculates aviation value c3 (t) of the temperature signal of each the first temperature sensor, temperature signal u (t) that primary processor utilizes following formulae discovery to gather:
U (t)=c3 (t)
2+ (c3 (t)-c1 (t))
2+ (c3 (t)-c2)
2, the initial value of setting i is 1, and the initial value of setting j is 1, is provided with fault threshold E in memory device;
(8-2) calculate the local maximum of u (t) and obtain coenvelope line u by cubic spline interpolation
up(t);
(8-3) calculate the local minimum of signal u (t) and obtain lower envelope line u by cubic spline interpolation
1ow(t);
(8-4) average envelope m is defined
1(t)=[u
up(t)+u
low(t)]/2;
(8-5) formula h is utilized
j(t)=u (t)-m
j(t) calculated difference h
j(t);
If (8-6) h
jt () does not meet IMF and sieves stop condition, make u (t)=h
jt (), j value increase by 1, returns step (8-2) to h
jt () proceeds to decompose; Work as h
jt () meets IMF and sieves stop condition, then obtain the 1st IMF component c of u (t) signal
1(t)=h
j(t);
(8-7) formula r is utilized
i(t)=u (t)-c
it () calculates residual components r
i(t);
(8-8) r is worked as
iwhen () does not meet decomposition stop condition t, make u (t)=r
it (), makes i value increase by 1, return step (8-2) to r
it () continues to decompose; When satisfied screening stop condition, if n=i, obtain n IMF component c
i(t) and 1 residual components r
nt (), u (t) then can be expressed as
extract c
in number of sample value c of (t)
i(k), k=1,2 ..., N;
(8-9) formula is utilized
calculate each component energy of u (t), compare each component energy E of u (t)
max, choose E
1, E
2..., E
nmiddle maxim E
max, work as E
maxduring > E, show that each lithium cell group temperature is too high, primary processor controls annunciator and sends alarm message; Meanwhile, primary processor controls blower fan work, is the cooling of each lithium cell group.
Wherein, the screening stop condition of (8-6), (8-8) adopts imitative Cauchy's test for convergence,
work as S
dduring < ε, screening stops, and ε is usually between 0.2 and 0.3; Decomposing stop condition is residual signal r
it () becomes monotone function.
Should be understood that the present embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Claims (10)
1. an electric automobile lithium battery management devices, it is characterized in that, comprise primary processor (1), lithium cell group (4) that memory device (2), telltale (3), m connect successively, a n1 data selector (5) and from treater (6); Each lithium cell group includes the battery core (7) of n1 series connection, n1 battery core of each lithium cell group is electrically connected with n1 data selector respectively, n1 data selector, to be electrically connected successively from treater and primary processor, battery charger (9) is electrically connected with m lithium cell group by charge relay (10), the motor (11) of electronlmobil is electrically connected with m lithium cell group by electric discharge relay (12), and memory device, telltale, charge relay and electric discharge relay are all electrically connected with primary processor.
2. electric automobile lithium battery management devices according to claim 1, is characterized in that, also comprise the first temperature sensor (13) be located in each lithium cell group, each first temperature sensor is all electrically connected with primary processor.
3. electric automobile lithium battery management devices according to claim 2, it is characterized in that, also comprise the second temperature sensor (14) for testing environment temperature and annunciator (15), the second temperature sensor and annunciator are all electrically connected with primary processor.
4. electric automobile lithium battery management devices according to claim 3, is characterized in that, also comprise the blower fan (16) for lowering the temperature to each lithium cell group, blower fan is electrically connected with primary processor.
5. according to the electric automobile lithium battery management devices of claim 1-4 described in any one, it is characterized in that, each lithium cell group includes housing, and housing is provided with the voltage interface be connected with n1 battery core respectively, and each voltage interface is electrically connected with n1 data selector respectively.
6. be applicable to a control method for electric automobile lithium battery management devices according to claim 1, it is characterized in that, comprise the steps:
(6-1) the normal voltage interval [A of each battery core is provided with in memory device
1, A
2], primary processor is to the order of the voltage of the battery core sent from treater in per each lithium cell group of interval T cycle detection;
Be 1 by the battery core in each lithium cell group according to series sequence number consecutively ..., n1, is numbered 1 respectively by each data selector ..., n1;
The battery core being numbered k1 in each lithium cell group is all connected with the data selector being numbered k1, k1 ∈ [1, n], makes charge relay and the adhesive of electric discharge relay;
(6-2) in time T, the voltage data of n1 × m the battery core that 1 to n1 data selector gathers is read successively from treater;
(6-3) primary processor is by the detection voltage A of each battery core and normal voltage interval [A
1, A
2] compare:
As the detection voltage A > A of any one battery core
2, primary processor controls charge relay and disconnects;
As the detection voltage A < A of any one battery core
1, primary processor controlled discharge relay disconnects;
(6-4) voltage A ∈ [A is detected when any one battery core all meets
1, A
2] time, primary processor controls charge relay and the equal adhesive of electric discharge relay.
7. the control method of electric automobile lithium battery management devices according to claim 6, also comprises the first temperature sensor be located in each lithium cell group, and each first temperature sensor is all electrically connected with primary processor, it is characterized in that, also comprises the steps:
Standard temperature interval [B is provided with in memory device
1, B
2], each the first temperature sensor detects the temperature of each lithium cell group respectively;
Primary processor is by the detected temperatures B of each lithium cell group and standard temperature interval [B
1, B
2] compare:
As the detection voltage B > B of any one lithium cell group
2, primary processor controlled discharge relay disconnects;
As the detection voltage B < B of any one lithium cell group
1, primary processor controls charge relay and disconnects.
When arbitrary lithium cell group all meets detected temperatures B ∈ [B
1, B
2] time, primary processor controls charge relay and the equal adhesive of electric discharge relay.
8. the control method of electric automobile lithium battery management devices according to claim 7, also comprise the second temperature sensor for testing environment temperature and annunciator, second temperature sensor and annunciator are all electrically connected with primary processor, it is characterized in that, also comprise the steps:
(8-1) the second temperature sensor detects and obtains ambient temperature signal c1 (t), standard temperature value c2 is provided with in memory device, primary processor calculates aviation value c3 (t) of the temperature signal of each the first temperature sensor, temperature signal u (t) that primary processor utilizes following formulae discovery to gather:
U (t)=c3 (t)
2+ (c3 (t)-c1 (t))
2+ (c3 (t)-c2)
2, the initial value of setting i is 1, and the initial value of setting j is 1, is provided with fault threshold E in memory device;
(8-2) calculate the local maximum of u (t) and obtain coenvelope line u by cubic spline interpolation
up(t);
(8-3) calculate the local minimum of signal u (t) and obtain lower envelope line u by cubic spline interpolation
low(t);
(8-4) average envelope m is defined
1(t)=[u
up(t)+u
low(t)]/2;
(8-5) formula h is utilized
j(t)=u (t)-m
j(t) calculated difference h
j(t);
If (8-6) h
jt () does not meet IMF and sieves stop condition, make u (t)=h
jt (), j value increase by 1, returns step (8-2) to h
jt () proceeds to decompose; Work as h
jt () meets IMF and sieves stop condition, then obtain the 1st IMF component c of u (t) signal
1(t)=h
j(t);
(8-7) formula r is utilized
i(t)=u (t)-c
it () calculates residual components r
i(t);
(8-8) r is worked as
iwhen () does not meet decomposition stop condition t, make u (t)=r
it (), makes i value increase by 1, return step (8-2) to r
it () continues to decompose; When satisfied screening stop condition, if n=i, obtain n IMF component c
i(t) and 1 residual components r
nt (), u (t) then can be expressed as
extract c
in number of sample value c of (t)
i(k), k=1,2 ..., N;
(8-9) formula is utilized
calculate each component energy of u (t), compare each component energy E of u (t)
max, choose E
1, E
2..., E
nmiddle maxim E
max, work as E
maxduring > E, show that each lithium cell group temperature is too high, primary processor controls annunciator and sends alarm message;
Wherein, the screening stop condition of (8-6), (8-8) adopts imitative Cauchy's test for convergence,
work as S
dduring < ε, screening stops, and ε is usually between 0.2 and 0.3; Decomposing stop condition is residual signal r
it () becomes monotone function.
9. the control method of electric automobile lithium battery management devices according to claim 8, also comprise the blower fan for lowering the temperature to each lithium cell group, blower fan is electrically connected with primary processor, it is characterized in that, also comprises the steps:
Work as E
maxduring > E, primary processor controls blower fan work, is the cooling of each lithium cell group.
10. the control method of the electric automobile lithium battery management devices according to any one of claim 6-9, is characterized in that, also comprises the steps: between step (6-2) and (6-3)
The voltage of the battery core of each lithium cell group is added by primary processor, obtains the voltage U of each lithium cell group
point; The voltage of each lithium cell group is added and obtains total voltage U
always;
Primary processor controls the voltage U that telltale shows each lithium cell group
pointwith total voltage U
always.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105480106A true CN105480106A (en) | 2016-04-13 |
| CN105480106B CN105480106B (en) | 2017-09-29 |
Family
ID=55667511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510808761.4A Active CN105480106B (en) | 2015-11-20 | 2015-11-20 | Electric automobile lithium battery managing device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105480106B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110518656A (en) * | 2019-07-30 | 2019-11-29 | 安徽誉昕能源科技有限公司 | A kind of battery of electric vehicle security protection integrated system |
| US11190039B2 (en) | 2018-08-13 | 2021-11-30 | Delta Electronics, Inc. | Method of charging battery and system using the same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0814556A2 (en) * | 1996-06-21 | 1997-12-29 | 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 |
| CN1725596A (en) * | 2005-06-30 | 2006-01-25 | 复旦大学 | Intelligent management circuit structure for battery |
| CN101162844A (en) * | 2006-10-10 | 2008-04-16 | 现代自动车株式会社 | Battery management system for vehicles |
| CN101488671A (en) * | 2009-02-24 | 2009-07-22 | 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 |
-
2015
- 2015-11-20 CN CN201510808761.4A patent/CN105480106B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0814556A2 (en) * | 1996-06-21 | 1997-12-29 | 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 |
| CN1725596A (en) * | 2005-06-30 | 2006-01-25 | 复旦大学 | Intelligent management circuit structure for battery |
| CN101162844A (en) * | 2006-10-10 | 2008-04-16 | 现代自动车株式会社 | Battery management system for vehicles |
| CN101488671A (en) * | 2009-02-24 | 2009-07-22 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11190039B2 (en) | 2018-08-13 | 2021-11-30 | Delta Electronics, Inc. | Method of charging battery and system using the same |
| CN110518656A (en) * | 2019-07-30 | 2019-11-29 | 安徽誉昕能源科技有限公司 | A kind of battery of electric vehicle security protection integrated system |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105480106B (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5552532B2 (en) | Method and apparatus for controlling battery heating | |
| CN103208828B (en) | A kind of series-connected cell group management system | |
| CN103904721B (en) | Cell voltage equalization device and method | |
| CN105429249A (en) | Battery control device and method for controlling battery | |
| EP3982140B1 (en) | Device for managing battery and method for managing battery | |
| CN110764014A (en) | Method and device for detecting short circuit in battery, terminal and readable storage medium | |
| KR20130109066A (en) | Apparatus and method for measuring isolation resistance of battery | |
| KR101675191B1 (en) | Apparatus and method for measuring insulation resistance | |
| KR101678277B1 (en) | Apparatus and method for detecting degradation of switch | |
| JP2011155825A (en) | Battery managing system and method of driving the same | |
| EP1826863A2 (en) | Charging apparatus | |
| CN110949175A (en) | Battery service life control method for electric automobile | |
| CN103683428A (en) | Battery management system for electronic vehicle and electronic vehicle | |
| CN111483350B (en) | Balance and micro-short circuit detection method for power battery pack | |
| CN105480106A (en) | Management device and control method of electric automobile lithium battery | |
| CN114103647A (en) | Electric vehicle residual performance evaluation method and device and computer readable storage medium | |
| CN106443498A (en) | Detection method and detection device for battery pack | |
| CN103033693B (en) | A kind of mobile terminal charging measurement system and method | |
| CN108832686A (en) | Charge circuit and charge circuit detection method | |
| CN205141749U (en) | Electromobile lithium battery management device | |
| CN211018294U (en) | Charge control device, battery management system, and battery pack | |
| KR20140075078A (en) | Heating system for a battery module and method of heating the battery module | |
| KR20170062325A (en) | Apparatus for diagnosing high voltage secondary battery fuse | |
| CN205353257U (en) | Insulating detecting system of direct current electric leakage based on adjustable resistance network | |
| CN203798986U (en) | Automatic detection device for lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |