CN106114257A - A kind of battery system and control method - Google Patents
A kind of battery system and control method Download PDFInfo
- Publication number
- CN106114257A CN106114257A CN201610529268.3A CN201610529268A CN106114257A CN 106114257 A CN106114257 A CN 106114257A CN 201610529268 A CN201610529268 A CN 201610529268A CN 106114257 A CN106114257 A CN 106114257A
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- China
- Prior art keywords
- battery module
- relay
- main battery
- battery
- reserve
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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
- 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
-
- 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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- 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 kind of battery system, control method and electric automobile, wherein, battery system, including: main battery module, reserve battery module and the first relay；After described reserve battery module and described first relay are connected in series, then it is connected with described main battery modules in parallel.Battery system, control method and the electric automobile provided by the application, is added the available power of battery system, and extends the use time of battery system.
Description
Technical field
The present invention relates to technical field of new energy, particularly relate to a kind of battery system and control method.
Background technology
Electric automobile, as the term suggests, refer to vehicle power as power, drive the vehicle of wheels travel with motor.Electronic
The service life of automobile and reliability, mainly have the life and reliability of battery system to determine.
The life-span of the battery system of electric automobile is the most relatively low at present, and therefore, urgent need is a kind of at present has longer use
The battery system in life-span.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, it is an object of the present invention to propose a kind of battery system, battery system is incorporated to reserve battery mould
Group, adds the available power of battery system, and makes battery system in use for some time, occur due to capacity attenuation or
When person's cell makes the problem that battery system capacity reduces extremely, battery system can be improved with by reserve battery module
Capacity, thus extend the use time of battery system.
Second object of the present invention is to propose a kind of control method of battery-system.
Third object of the present invention is to propose a kind of electric automobile.
To achieve these goals, first aspect present invention embodiment proposes a kind of battery system, including: main battery mould
Group, reserve battery module and the first relay；After described reserve battery module and described first relay are connected in series, then with institute
State main battery modules in parallel to connect.
The battery system of the embodiment of the present invention, is incorporated to reserve battery module in battery system, adds battery system
Available power, and make battery system in use for some time, occur owing to capacity attenuation or cell make extremely
During the problem that battery system capacity reduces, with being improved the capacity of battery system by reserve battery module, thus electricity can be extended
The use time of cell system.
To achieve these goals, second aspect present invention embodiment proposes a kind of control method of battery-system, including:
Obtain the capability value that main battery module is current；Judge the capability value that described main battery module is current, if less than the value preset；If
It is then to control the first relay Guan Bi, so that reserve battery module and described main battery module provide dynamic for electric automobile simultaneously
Power.
The control method of battery-system that the embodiment of the present application provides, first obtains the capability value that main battery module is current, so
The capability value that rear judgement main battery module is current, if less than the value preset, the most then control the first relay Guan Bi, so that
Reserve battery module and described main battery module provide power for electric automobile simultaneously.Thus, the available of battery system is added
Electricity, improves the reliability of battery system, extends the use time of battery system.
To achieve these goals, third aspect present invention embodiment proposes a kind of electric automobile, and it includes above-mentioned the
On the one hand the battery system provided.
The electric automobile of the embodiment of the present invention, is incorporated to reserve battery module in battery system, adds battery system
Available power, and make battery system in use for some time, occur owing to capacity attenuation or cell make extremely
During the problem that battery system capacity reduces, with being improved the capacity of battery system by reserve battery module, thus electricity can be extended
The use time of cell system.
Accompanying drawing explanation
Fig. 1 is the battery system structure schematic diagram of one embodiment of the application；
Fig. 2 is the control method of battery-system schematic flow sheet of one embodiment of the application；
Fig. 3 is the battery system structure schematic diagram of another embodiment of the application；
Fig. 4 is the control method of battery-system schematic flow sheet of another embodiment of the application；
Fig. 5 is the electric vehicle structure schematic diagram of one embodiment of the application.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings battery system and the control method thereof of the embodiment of the present invention are described.
Fig. 1 is the structural representation of the battery system of one embodiment of the application.
As it is shown in figure 1, this battery system 1, including: main battery module 2, reserve battery module 3 and the first relay 4；
After described reserve battery module 3 is connected in series with described first relay 4 more in parallel with described main battery module 2
Connect.
Concrete, in the embodiment of the present application, battery system is incorporated to reserve battery module, add battery system can
Power consumption, and make battery system in use for some time, occur owing to capacity attenuation or cell make electricity extremely
During the problem that cell system capacity reduces, with being improved the capacity of battery system by reserve battery module, thus battery can be extended
The use time of system.
It should be noted that the first relay 4 can be any form of gate-controlled switch device, it is such as IGBT, open circuit
Device etc., this is not limited by the present embodiment.
Below in conjunction with the battery system of above-mentioned offer, the control method of battery-system that the embodiment of the present application is provided, carry out
Explanation.
Fig. 2 is the control method of battery-system flow chart of one embodiment of the application.
As in figure 2 it is shown, this control method of battery-system, including:
Step 201, obtains the capability value that main battery module is current.
Concrete, in electric automobile, battery management system (BMS) is to connect vehicle mounted dynamic battery system and electric automobile
Important tie, its major function includes: battery system physical parameter is monitored in real time；Battery status is estimated；Inline diagnosis is with pre-
Alert；Charge and discharge control with preliminary filling；Balanced management and heat management etc..
In the embodiment of the present application, can obtain, by battery management system, the capability value that main battery module is current in real time.
Step 202, it is judged that the capability value that described main battery module is current, if less than the value preset.
Wherein, the value preset can determine according to the operating characteristic of main battery module, or normal according to electric automobile
Capacity needed for work sets.
Step 203, the most then control the first relay Guan Bi, so that reserve battery module is same with described main battery module
Time provide power for electric automobile.
Concrete, if battery management system (BMS) determines that the capability value of main battery module is less than the value preset, i.e. main battery
Module cannot provide enough energy for electric automobile, or the capacity of main battery module is less than the capacity of normal work, then may be used
To control the first relay Guan Bi, reserve battery module is accessed power supply circuits, make reserve battery module with main battery module altogether
It is all electrokinetic cell and energy is provided.
The control method of battery-system that the embodiment of the present application provides, first obtains the capability value that main battery module is current, so
The capability value that rear judgement main battery module is current, if less than the value preset, the most then control the first relay Guan Bi, so that
Reserve battery module and described main battery module provide power for electric automobile simultaneously.Thus, the available of battery system is added
Electricity, improves the reliability of battery system, extends the use time of battery system.
Further, after the electricity of battery system runs out, needing to be charged battery system, accordingly, Fig. 3 is
The battery system structure schematic diagram that another embodiment of the application provides.
As it is shown on figure 3, this battery system, also include:
With positive source (+) and the second relay 5 of being connected in series of described main battery module 2 and reserve battery module 3；And
With power cathode (-) and the 3rd relay 6 that is connected in series of described main battery module 2 and reserve battery module 3.
Concrete, when battery system is charged by needs, can be by controlling the second relay 5 and the 3rd relay
6 are respectively closed, and by main battery module 2 and reserve battery module 3 and power on, thus are main battery module and reserve battery
Module charges.
Further, in the charging starting stage, in order to prevent charging current excessive, loss main battery module 2 or standby
Battery modules 3, also includes in this battery system: the 4th relay 7 and pre-charge resistance 8；
Described 4th relay 7 and described pre-charge resistance 8 are connected in parallel with described second relay 5 after being connected in series.
Concrete, in the starting stage charged for main battery module 2 and reserve battery module 3, first Guan Bi the 4th relay
Device, thus circuit will access pre-charge resistance 8 so that power supply is main battery module 2 and reserve battery by pre-charge resistance 8
Module 3 charges, and afterwards when, after system stability, being closed again the second relay 5, and disconnect the 4th relay, thus obtains power supply and passes through
Second relay 5 charges for main battery module 2 and reserve battery module 3, reduces the energy dissipation that pre-charge resistance 8 brings.
During further, since the capacity between the battery used in battery system does not mates simultaneously, whole battery will be affected
The capacity of system, the most as shown in Figure 4, control method to above-mentioned battery in the embodiment of the present application, it is also possible to including:
Step 401, after disconnecting described first relay, is charged for described main battery module.
Concrete, the control method of battery-system of the present embodiment offer, by controlling main battery module and reserve battery mould
Group capacity all in same level, thus ensure the capacity matching of reserve battery module and main battery module.
Concrete, when electric automobile maintains, this method can be used, come main battery module and reserve battery mould
The Capacity uniformity of group is controlled.
Step 402, after determining described main battery module charging complete, closes described first relay, controls described main electricity
Pond module and reserve battery module discharge.
Concrete, the whether charging complete of main battery module can be monitored, i.e. by the charge protection system of BMS system
When, after charge protection system protection, i.e. can determine that main battery module charging complete, the first relay can being closed afterwards, make main electricity
Pond module discharges with reserve battery module simultaneously.
Step 403, after determining the value that the capacity of described reserve battery module reaches the first setting, disconnects described first relay
After device, control described main battery module and continue electric discharge, until the capacity of described main battery module reaches the value of the second setting.
Total electricity generally, due to total electricity ratio main battery module of reserve battery module is low, therefore by main battery mould
When group and reserve battery module discharge simultaneously, first reserve battery module can reach discharge off state.
Wherein, the first value set is identical with the value that second sets, and is all the low-voltage variation value of described battery system.
Concrete, can be by the discharge prevention system of BMS system, whether the capacity monitoring reserve battery reaches first
The value set, after the capacity of reserve battery module reaches the value of the first setting, the system that can trigger enters such as discharge prevention state,
After now disconnecting the first relay, battery system can proceed with electric discharge, if now battery system triggers discharge prevention again, then
Illustrate that the capacity of main battery system has also reached discharge prevention value, now, reserve battery module capacity and main battery module are described
Capacity has reached identical platform, when being charged main battery module and reserve battery module, can ensure main battery the most again
Module and the capacity matching of reserve battery module, so that main battery module and reserve battery module in battery system reach
Flat horizontal state, thus improve life-span and the use time of battery system.
The control method of battery-system that the embodiment of the present application provides, first controls main battery module and electricity is charged to maximum,
Control main battery module the most again and reserve battery module discharges simultaneously, after having discharged to reserve battery module, then by standby
Battery modules is excised from discharge loop, continues to discharge main battery module, until main battery module has discharged, thus
Make main battery module and reserve battery module be in identical platform, main battery module and reserve battery module are entered the most simultaneously
Row charging, thus ensure that main battery module and reserve battery module capacity matching, thus improve the reliability of battery system,
Extend the life-span of battery system.
Fig. 5 is the electric vehicle structure schematic diagram that one embodiment of the application provides.
As it is shown in figure 5, the electric automobile 50 that the embodiment of the present application provides, including battery system 51 and battery management system
52。
Wherein, the structure of battery system and control method can refer to the detailed description of above-described embodiment, and here is omitted.
The electric automobile of the embodiment of the present application, is incorporated to reserve battery module in battery system, adds battery system
Available power, and make battery system in use for some time, occur owing to capacity attenuation or cell make extremely
During the problem that battery system capacity reduces, with being improved the capacity of battery system by reserve battery module, thus electricity can be extended
The use time of cell system.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (7)
1. a battery system, it is characterised in that including: main battery module, reserve battery module and the first relay；
After described reserve battery module and described first relay are connected in series, then it is connected with described main battery modules in parallel.
Battery system the most according to claim 1, it is characterised in that also include: with positive source and described main battery mould
The second relay that group and reserve battery module are connected in series；And
The 3rd relay being connected in series with power cathode and described main battery module and reserve battery module.
Battery system the most according to claim 2, it is characterised in that also include: the 4th relay and pre-charge resistance；
Described 4th relay and described pre-charge resistance are connected in parallel with described second relay after being connected in series.
4. a control method of battery-system, it is characterised in that including:
Obtain the capability value that main battery module is current；
Judge the capability value that described main battery module is current, if less than the value preset；
The most then control the first relay Guan Bi, so that reserve battery module and described main battery module are electric automobile simultaneously
Power is provided.
5. method as claimed in claim 4, it is characterised in that also include:
After disconnecting described first relay, it is charged for described main battery module；
After determining described main battery module charging complete, close described first relay, control described main battery module and standby
Battery modules is discharged；
After determining the value that the capacity of described reserve battery module reaches the first setting, after disconnecting described first relay, control institute
State main battery module and continue electric discharge, until the capacity of described main battery module reaches the value of the second setting.
6. method as claimed in claim 5, it is characterised in that the described first value set and the described second value phase set
With, it is all the low-voltage variation value of described battery system.
7. an electric automobile, it is characterised in that include the battery system as described in claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529268.3A CN106114257A (en) | 2016-07-06 | 2016-07-06 | A kind of battery system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529268.3A CN106114257A (en) | 2016-07-06 | 2016-07-06 | A kind of battery system and control method |
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| CN106114257A true CN106114257A (en) | 2016-11-16 |
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| CN201610529268.3A Pending CN106114257A (en) | 2016-07-06 | 2016-07-06 | A kind of battery system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115214384A (en) * | 2021-04-14 | 2022-10-21 | 上海比耐信息科技有限公司 | Battery system for electric vehicle and using method thereof |
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| CN2663203Y (en) * | 2003-10-26 | 2004-12-15 | 陈振富 | Stand by power supply of electric vehicle |
| CN101025436A (en) * | 2006-12-28 | 2007-08-29 | 奇瑞汽车有限公司 | High-voltage safety monitoring device for electric automobile |
| CN103262382A (en) * | 2010-12-24 | 2013-08-21 | Nec能源元器件株式会社 | Discharge controller |
| JP2014193044A (en) * | 2013-03-27 | 2014-10-06 | Honda Motor Co Ltd | Power supply control device |
-
2016
- 2016-07-06 CN CN201610529268.3A patent/CN106114257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663203Y (en) * | 2003-10-26 | 2004-12-15 | 陈振富 | Stand by power supply of electric vehicle |
| CN101025436A (en) * | 2006-12-28 | 2007-08-29 | 奇瑞汽车有限公司 | High-voltage safety monitoring device for electric automobile |
| CN103262382A (en) * | 2010-12-24 | 2013-08-21 | Nec能源元器件株式会社 | Discharge controller |
| JP2014193044A (en) * | 2013-03-27 | 2014-10-06 | Honda Motor Co Ltd | Power supply control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115214384A (en) * | 2021-04-14 | 2022-10-21 | 上海比耐信息科技有限公司 | Battery system for electric vehicle and using method thereof |
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Application publication date: 20161116 |