CN106114249A - Electric automobile batteries in parallel connection case power-on and power-off control system and control method - Google Patents
Electric automobile batteries in parallel connection case power-on and power-off control system and control method Download PDFInfo
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- CN106114249A CN106114249A CN201610339616.0A CN201610339616A CN106114249A CN 106114249 A CN106114249 A CN 106114249A CN 201610339616 A CN201610339616 A CN 201610339616A CN 106114249 A CN106114249 A CN 106114249A
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- battery
- power
- battery case
- collecting unit
- information collecting
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Classifications
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
- B60L58/19—Switching between serial connection and parallel connection of battery modules
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
-
- 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)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of electric automobile batteries in parallel connection case power-on and power-off control system and control method.Control system includes the master controller being arranged on electric automobile, CAN, battery information collecting unit power control module, relay control module and the battery information collecting unit being arranged in each battery case.Control method is: master controller is first signaled to battery information collecting unit power control module, the energising of battery information collecting unit is made to start to gather the information of battery in battery case belonging to oneself, and pass to master controller with message in form, message includes the battery information collecting unit serial number one to one of No. ID with battery case, master controller sends control signal to relay control module, the power-on and power-off of control battery case again through processing.Whether the present invention can export electric energy to single battery case carries out selectivity control, it is achieved the reasonable distribution of battery case, improves the utilization rate of battery electric quantity, had both improved battery performance, and also allowed for the replacing of battery case.
Description
Technical field
The present invention relates to electric automobile and manufacture field, particularly relate to a kind of electric automobile batteries in parallel connection case power-on and power-off
Control system and control method.
Background technology
At present, in order to meet the needs of electric powered motor, electric automobile needs a lot of connection in series-parallel are installed
The electrokinetic cell connected, these electrokinetic cells, or exist with the whole battery case form that volume ratio is bigger,
Existing with multiple battery case forms that multiple connection in series-parallel connect, whole battery case form needs together certainly
Power-on and power-off, and multiple battery cases that at present connection in series-parallel connects also are to power on together or one remove electricity, it is impossible to right
Single battery case carries out independent upper and lower electric control according to own situation, it is impossible to carry out multiple battery cases rationally
Distribution, it is impossible to Appropriate application battery electric quantity, and often some battery case performance has tended to abnormal but has also existed
Work, it is impossible to battery case is carried out selective power-off protection, had both affected battery performance, and be also not easy to single
The replacing of battery case.
Summary of the invention
Present invention mainly solves original electric automobile and battery case can not be carried out independent upper and lower electric control, it is impossible to
Multiple battery cases are carried out reasonable distribution, it is impossible to Appropriate application battery electric quantity, and often some battery case
Can tend to abnormal but also work, it is impossible to battery case carried out selective power-off protection, had both affected electricity
Pond performance, is also not easy to the technical problem of the replacing of single battery case；A kind of electric automobile batteries in parallel connection is provided
Case power-on and power-off control system and control method, multiple battery cases being connected in parallel can be carried out the most upper and lower by it
Electric control, with reasonable distribution battery case, can improve the utilization rate of battery electric quantity, and can be according to actual feelings
Condition carries out selective power-off protection to some battery case, has both improved battery performance, also allows for battery case more
Change.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: the electricity of the present invention
Electrical automobile batteries in parallel connection case power-on and power-off control system, is provided with master controller and CAN in electric automobile, electricity
A battery information collecting unit, the power supply of battery information collecting unit it is provided with in each battery case on electrical automobile
End is provided with battery information collecting unit power control module, and the voltage output end of battery case is provided with Control
Module, the first outfan of described master controller and described battery information collecting unit power control module
Being connected, the second outfan of described master controller is connected with described relay control module, described electricity
The outfan of pond information acquisition unit is connected with described master controller through CAN, described master controller
For vehicle control unit of electric vehicle or battery management unit, the battery case on electric automobile is all connected in parallel.Open
During beginning work, master controller is first signaled to each battery information collecting unit power control module, makes electricity
Pond information acquisition unit obtains electric and starts working, and battery information collecting unit gathers battery in affiliated battery case
The parameters such as voltage, electric current, temperature and harmony, form message in conjunction with battery information collecting unit serial number,
It is uploaded to master controller by CAN.The message that each battery case is uploaded by master controller processes,
Then corresponding control signal is sent to the Control mould being connected on the voltage output end of each battery case
Block, whether the voltage output end controlling battery case exports electric energy to the actuating unit of electric automobile.Therefore, originally
In technical scheme, multiple battery cases being connected in parallel can realize independent upper and lower electricity, can be according to each electricity
Whether the practical situation of pond case exports electric energy to single battery case optionally controls, it is achieved battery case
Reasonable distribution, improves the utilization rate of battery electric quantity, and the battery case that situation is abnormal can be carried out power-off guarantor
Protect, both improved battery performance, also allow for the replacing of battery case.
The control method of the electric automobile batteries in parallel connection case power-on and power-off control system of the present invention, comprises the following steps:
First outfan of 1. described master controller sends control signal and adopts to the battery information of each battery case
Collection unit power control module, then make described under the control of battery information collecting unit power control module
Battery information collecting unit is energized；
2. described battery information collecting unit gathers the information of battery in battery case belonging to oneself, and with message
Form is uploaded to described master controller by described CAN, and message includes No. ID with battery case
Battery information collecting unit serial number one to one；
The message received is analyzed, processes and judges by 3. described master controller, then master controller
The second outfan send control signal to the described relay that is connected with the voltage output end of each battery case
Control module, the voltage output end of the battery case corresponding to relay control module controls whether output voltage
To electric automobile.
Whether the present invention can export electric energy according to the practical situation of each battery case to single battery case selects
Property control, it is achieved the reasonable distribution of battery case, improve the utilization rate of battery electric quantity, and can be to situation
Abnormal battery case carries out power-off protection, had both improved battery performance, and had also allowed for the replacing of battery case.
As preferably, battery information collecting unit serial number and described battery information in described message are adopted
The power control switch one_to_one corresponding of collection unit, the power control switch of battery information collecting unit and described
The switch one_to_one corresponding on battery case voltage output end that relay control module is controlled.No. ID of battery case,
Battery information collecting unit serial number, the power control switch of battery information collecting unit feeder ear and battery case
Switch on voltage output end is all relation one to one, it is simple to master controller identification battery case, it is simple to have
Pointedly certain battery case is made corresponding control.
As preferably, described battery information collecting unit serial number is carried out size sequence, and battery case
No. ID corresponding battery information collecting unit serial number the most forward the biggest.No. ID of i.e. battery case the least
Corresponding battery information collecting unit serial number is the biggest, it is ensured that both one_to_one corresponding.
As preferably, 3. described step is: the message received is analyzed by described master controller,
Processing and judge, when master controller finds certain battery case operation irregularity, then master controller identifies exception
No. ID of battery case, and the second outfan of master controller send control signal give be connected to abnormal battery case
Voltage output end on relay control module, relay control module cut off the high pressure of abnormal battery case
Output switch, makes abnormal battery case be in power-down state.Abnormal battery case, refers to that some parameter is abnormal, or
Message occurs warning message.Now strengthen damage to make this battery case be unlikely to because working on, for
Protect this battery case and electric automobile, need to cut off the output of its power supply immediately.Carry out selective power-off guarantor
Protect, both improved battery performance, also allow for the replacing of battery case, it is ensured that when changing this battery case, other battery
Case remains to normally work, and the continuation not affecting electric automobile travels.
As preferably, when the battery case being in power-down state is fixed a breakdown and can be reused, master controller
Receive the message recovering normal battery case, and identify and recover No. ID of normal battery case, and main control
Second outfan of device sends control signal to being connected to recover continuing on the voltage output end of normal battery case
Electrical control module, is controlled to recover the High voltage output switch Guan Bi of normal battery case by relay control module,
Make the normal battery case of recovery in running order, provide running voltage for electric automobile.It is easy to single battery
The upper and lower electricity of case, battery case is changed convenient, and during replacing, other battery case remains to normally work, and does not affect electricity
The continuation of electrical automobile travels.
The invention has the beneficial effects as follows: simplify the identification process of battery case ID, when minimizing electric automobile powers on
Between.Multiple battery cases being connected in parallel can be carried out independent upper and lower electric control, can be with reasonable distribution battery case
Electricity, improves the utilization rate of battery electric quantity, and can select some battery case according to practical situation
The power-off protection of property, had both improved battery performance, had also allowed for the replacing of battery case, cost-effective.
Accompanying drawing explanation
Fig. 1 is a kind of system attachment structure frame of electric automobile batteries in parallel connection case power-on and power-off control system of the present invention
Figure.
1. master controller in figure, 2.CAN bus, 3. battery information collecting unit, 4. battery information gathers single
Unit's power control module, 5. relay control module, 6. battery case.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment: the electric automobile batteries in parallel connection case power-on and power-off control system of the present embodiment, as it is shown in figure 1,
Including master controller 1, CAN 2 and multiple battery case 6 being connected in parallel, master is installed in electric automobile
Controller 1 and CAN 2, multiple battery cases 6 being connected in parallel are also mounted on electric automobile, for electronic
Automobile provides power.A battery information collecting unit 3, battery information collecting unit is had in each battery case 6
3 are powered by 12V power supply, and 12V power supply is through the feeder ear phase of power control switch and battery information collecting unit 3
Even, battery information collecting unit power control module 4 is connected with the control end of power control switch, and battery is believed
Breath collecting unit power control module controls opening or closing of power control switch.The voltage of battery case 6 is defeated
Going out upper connection has High voltage output to switch, and the control end of High voltage output switch is connected with relay control module 5,
Relay control module controls opening or closing of battery case High voltage output switch.The first of master controller 1 is defeated
Go out end be connected with battery information collecting unit power control module 4, the second outfan of master controller 1 with continue
Electrical control module 5 is connected, and the outfan of battery information collecting unit 3 is through CAN and master controller 1
Being connected, in the present embodiment, master controller 1 is vehicle control unit of electric vehicle.
The control method of above-mentioned electric automobile batteries in parallel connection case power-on and power-off control system, comprises the following steps:
1. the first outfan of master controller 1 send control signal to and electric automobile on each be connected in parallel
The battery information collecting unit power control module 4 that battery case 6 is connected, then power at battery information collecting unit
Make the switch Guan Bi being connected with 12V power supply under the control of control module 4, then battery information collecting unit 3 obtains
Electricity is started working；
2. the information of battery during battery information collecting unit 3 gathers battery case 6 belonging to oneself, and with message shape
Formula is uploaded to master controller 1 by CAN 2, and message includes the ID one_to_one corresponding with battery case 6
Battery information collecting unit serial number；Battery information collecting unit serial number sorts by size, and battery
No. ID corresponding battery information collecting unit serial number the most forward of case is the biggest；And the battery letter in message
Breath collecting unit serial number and the power control switch one_to_one corresponding physically of battery information collecting unit 3,
The battery case high pressure that the power control switch of battery information collecting unit 3 and relay control module 5 are controlled
Output switch one_to_one corresponding physically；
3. the message received is analyzed, processes and judges by master controller 1, when master controller 1 finds
During certain battery case operation irregularity, then master controller 1 identifies No. ID of abnormal battery case, and main control
Second outfan of device 1 sends control signal to the relay on the voltage output end being connected to abnormal battery case
Control module 5, is cut off the High voltage output switch of abnormal battery case, makes abnormal battery by relay control module 5
Case is in power-down state；When the battery case being in power-down state is fixed a breakdown and can be reused, main control
Device 1 is first signaled to the battery information collecting unit power control module 4 being connected with this battery case, makes this electricity
The battery information collecting unit 3 of pond case obtains electric starting working, and uploads message, and master controller 1 receives this battery
The message of case, and identify No. ID of this battery case, and the second outfan of master controller 1 sends control letter
Number give the relay control module 5 that is connected on the voltage output end of this battery case, relay control module 5 control
Make the High voltage output switch Guan Bi of this battery case, make this battery case in running order, start as electric automobile
Running voltage is provided.
The present invention can identify No. ID of battery case easily and quickly, reduces electric automobile power-on time.Can be right
Multiple battery cases being connected in parallel carry out independent upper and lower electric control, can carry with reasonable distribution battery case electricity
The utilization rate of high battery electric quantity, and according to practical situation, some battery case can be carried out selective power-off
Protection, had both improved battery performance, had also allowed for the replacing of battery case, cost-effective.
Claims (6)
1. an electric automobile batteries in parallel connection case power-on and power-off control system, it is characterised in that be provided with in electric automobile
Master controller (1) and CAN (2), electric automobile is provided with in each battery case (6) battery
Information acquisition unit (3), the feeder ear of battery information collecting unit (3) is provided with battery information collecting unit and supplies
Electric control module (4), the voltage output end of battery case (6) is provided with relay control module (5), described
First outfan of master controller (1) and described battery information collecting unit power control module (4) phase
Even, the second outfan of described master controller (1) is connected with described relay control module (5),
The outfan of described battery information collecting unit (3) is through CAN (2) and described master controller (1)
Being connected, described master controller (1) is vehicle control unit of electric vehicle or battery management unit, electric automobile
On battery case (6) be all connected in parallel.
2. the controlling party of an electric automobile batteries in parallel connection case power-on and power-off control system as claimed in claim 1
Method, it is characterised in that comprise the following steps:
First outfan of 1. described master controller (1) sends control signal to each battery case (6)
Battery information collecting unit power control module (4), then at battery information collecting unit power control module (4)
Control under make described battery information collecting unit (3) be energized；
2. described battery information collecting unit (3) gathers the information of battery in battery case belonging to oneself (6),
And it is uploaded to described master controller (1) with message form by described CAN (2), message wraps
Include the battery information collecting unit serial number one to one of No. ID with battery case (6)；
The message received is analyzed, processes and judges by 3. described master controller (1), then master control
Second outfan of device processed (1) sends control signal to being connected with the voltage output end of each battery case (6)
Described relay control module (5), by relay control module (5) control corresponding to battery case (6)
Voltage output end whether output voltage is to electric automobile.
The control method of electric automobile batteries in parallel connection case power-on and power-off control system the most according to claim 2,
It is characterized in that the battery information collecting unit serial number in described message and described battery information gather single
Unit (3) power control switch one_to_one corresponding, the power control switch of battery information collecting unit (3) and
The switch one_to_one corresponding on battery case voltage output end that described relay control module (5) is controlled.
The control method of electric automobile batteries in parallel connection case power-on and power-off control system the most according to claim 2,
It is characterized in that described battery information collecting unit serial number is carried out size sequence, and the ID of battery case
Number the most forward corresponding battery information collecting unit serial number is the biggest.
5. according to the electric automobile batteries in parallel connection case power-on and power-off control system described in Claims 2 or 3 or 4
Control method, it is characterised in that 3. described step is: the described master controller (1) message to receiving
It is analyzed, processes and judges, when master controller (1) finds certain battery case operation irregularity, then master control
Device processed (1) identifies No. ID of abnormal battery case, and the second outfan of master controller (1) sends control
Signal processed gives the relay control module (5) on the voltage output end being connected to abnormal battery case, by relay
Control module (5) cuts off the High voltage output switch of abnormal battery case, makes abnormal battery case be in power-down state.
The control method of electric automobile batteries in parallel connection case power-on and power-off control system the most according to claim 5,
It is characterized in that when the battery case being in power-down state is fixed a breakdown and can be reused, master controller (1)
Receive the message recovering normal battery case, and identify and recover No. ID of normal battery case, and main control
Second outfan of device (1) sends control signal to being connected to recover on the voltage output end of normal battery case
Relay control module (5), by relay control module (5) control recover normal battery case high pressure
Output switch closes, and makes the normal battery case of recovery in running order, provides running voltage for electric automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339616.0A CN106114249A (en) | 2016-05-19 | 2016-05-19 | Electric automobile batteries in parallel connection case power-on and power-off control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339616.0A CN106114249A (en) | 2016-05-19 | 2016-05-19 | Electric automobile batteries in parallel connection case power-on and power-off control system and control method |
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| Publication Number | Publication Date |
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| CN106114249A true CN106114249A (en) | 2016-11-16 |
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| CN201610339616.0A Pending CN106114249A (en) | 2016-05-19 | 2016-05-19 | Electric automobile batteries in parallel connection case power-on and power-off control system and control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001185228A (en) * | 1999-12-24 | 2001-07-06 | Sanyo Electric Co Ltd | Electric power supply equipped with battery |
| CN201781037U (en) * | 2010-08-24 | 2011-03-30 | 扬州飞驰动力科技有限公司 | Battery management system of electric automobile |
| CN102361099A (en) * | 2011-07-29 | 2012-02-22 | 南京华博科技有限公司 | Balancing control system and method for cell array |
| CN102934318A (en) * | 2010-05-28 | 2013-02-13 | 铃木株式会社 | Control apparatus for parallel battery connection circuit |
| CN103370847A (en) * | 2011-12-09 | 2013-10-23 | 本田技研工业株式会社 | Power control device |
| CN105470555A (en) * | 2016-01-26 | 2016-04-06 | 宁波市北仑海伯精密机械制造有限公司 | Power battery pack structure and management method thereof |
-
2016
- 2016-05-19 CN CN201610339616.0A patent/CN106114249A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001185228A (en) * | 1999-12-24 | 2001-07-06 | Sanyo Electric Co Ltd | Electric power supply equipped with battery |
| CN102934318A (en) * | 2010-05-28 | 2013-02-13 | 铃木株式会社 | Control apparatus for parallel battery connection circuit |
| CN201781037U (en) * | 2010-08-24 | 2011-03-30 | 扬州飞驰动力科技有限公司 | Battery management system of electric automobile |
| CN102361099A (en) * | 2011-07-29 | 2012-02-22 | 南京华博科技有限公司 | Balancing control system and method for cell array |
| CN103370847A (en) * | 2011-12-09 | 2013-10-23 | 本田技研工业株式会社 | Power control device |
| CN105470555A (en) * | 2016-01-26 | 2016-04-06 | 宁波市北仑海伯精密机械制造有限公司 | Power battery pack structure and management method thereof |
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Application publication date: 20161116 |
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