CN106300472B - A kind of battery system and its control method - Google Patents
A kind of battery system and its control method Download PDFInfo
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- CN106300472B CN106300472B CN201510287901.8A CN201510287901A CN106300472B CN 106300472 B CN106300472 B CN 106300472B CN 201510287901 A CN201510287901 A CN 201510287901A CN 106300472 B CN106300472 B CN 106300472B
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- generator motor
- lead
- ion batteries
- control unit
- batteries piles
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Abstract
The technical issues of the present invention provides a kind of battery system and its control methods, are related to automobile technical field, cause the fuel economy of vehicle to reduce because of the unstable power that lead-acid battery group provides when solving to be cold-started engine at low temperature.The battery system includes: Li-ion batteries piles；The driving engine of generator motor, generator motor and automobile connects, and generator motor is electrically connected with Li-ion batteries piles；Control unit, control unit are connect with generator motor and Li-ion batteries piles signal respectively；When being cold-started engine, control unit sends the instruction for making Li-ion batteries piles generator motor output power to Li-ion batteries piles, control unit sends the instruction for making generator motor work under electric model to generator motor simultaneously, generator motor starts engine under the electric power that Li-ion batteries piles provide.The battery system is used for automobile.
Description
Technical field
The present invention relates to automobile technical field, in particular to a kind of battery system and its control method.
Background technique
Currently, battery system is usually arranged in the car, to provide in the case where automobile is in different conditions for starting engine
Power, and be the electric attachments power supply in automobile.Existing battery system generally includes in two kinds of battery packs, and one kind is plumbic acid electricity
Pond group, another kind are Li-ion batteries piles.When being cold-started engine, existing battery system is starting by lead-acid battery group
Engine provides electric power, and when restarting engine after executing idle running and shutting down, existing battery system passes through lithium-ion electric
Chi Zuwei starts engine and provides electric power.
Difference is in automobile respectively by controlling lead-acid battery group in existing battery system and Li-ion batteries piles
Electric power is provided for starting engine under state, the performance for accelerating battery pack because of the use of a certain battery pack long term frequent can be prevented
Deterioration, improves the reliability of the battery system of automobile.But two kinds of battery packs are used in above-mentioned battery system to start engine
When electric power is provided, when being cold-started engine, since the operating temperature range of lead-acid battery group is relatively narrow, and in low temperature, lead
The unstable power that sour battery pack provides, thus when the temperature is low, electric power is provided for starting engine by lead-acid battery group,
It because of the unstable power that lead-acid battery group provides can result in the need for that repeatedly engine could be started, cause the waste of fuel oil, make
The fuel economy for obtaining vehicle reduces.
Summary of the invention
In view of this, the present invention is directed to propose a kind of battery system, because of lead when solving to be cold-started engine at low temperature
Unstable power that sour battery pack provides and the technical issues of cause the fuel economy of vehicle to reduce.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of battery system, comprising:
Li-ion batteries piles；
The engine of generator motor, the generator motor and automobile connects, the generator motor and the lithium from
Sub- battery pack electrical connection；
Control unit, described control unit are connect with the generator motor and the Li-ion batteries piles signal respectively；
When being cold-started the engine, described control unit makes the Li-ion batteries piles institute to Li-ion batteries piles transmission
The instruction of generator motor output power is stated, described control unit makes the electricity generation and electromotion to generator motor transmission simultaneously
Instruction of the machine work under electric model, the generator motor start institute under the electric power that the Li-ion batteries piles provide
State engine.
Further, the battery system further includes lead-acid battery group, and the lead-acid battery group and described control unit are believed
Number connection, and the lead-acid battery group and the electricity generation and electromotion mechatronics；
Described control unit makes the lead-acid battery group generator motor output to lead-acid battery group transmission
The instruction of electric power, described control unit make the generator motor work in electric model to generator motor transmission simultaneously
Under instruction, the lead-acid battery group is the electric power that provides of the generator motor, starts the engine.
Preferably, the battery system further include: for monitoring the lead-acid battery group prison of the electricity of the lead-acid battery group
Survey device, the Li-ion batteries piles monitoring device of the electricity for monitoring the Li-ion batteries piles, and it is described for monitoring
The motor monitoring device of the operating mode of generator motor；
The lead-acid battery group monitoring device is connect with described control unit signal, and described control unit is according to the plumbic acid
The electricity for the lead-acid battery group that battery pack monitoring device is monitored, Xiang Suoshu lead-acid battery group and the generator motor
Send the instruction for lead-acid battery group charging；
The Li-ion batteries piles monitoring device is connect with described control unit signal, and described control unit is according to the lithium
The electricity for the Li-ion batteries piles that ion battery group monitoring device is monitored, Xiang Suoshu Li-ion batteries piles and the hair
The instruction that electric motor sends as Li-ion batteries piles charging；
The motor monitoring device is connect with described control unit signal, and described control unit is monitored according to the motor and filled
The operating mode of the generator motor monitored is set, the transmission of Xiang Suoshu generator motor makes the generator motor conversion work
The instruction of operation mode.
Further, it is high that the battery system, which further includes the low voltage transition for exporting the Li-ion batteries piles,
The electric pressure converter of voltage, the Li-ion batteries piles are electrically connected by the high voltage electrical attachment of the electric pressure converter and automobile
It connects；
The lead-acid battery group is electrically connected with the low-voltage electric attachments of automobile.
Preferably, the battery system further includes relay unit, the relay unit and described control unit signal
Connection, and the relay unit respectively with the lead-acid battery group and the electricity generation and electromotion mechatronics；
When needing the lead-acid battery group to the generator motor output power, described control unit is to the plumbic acid
Battery pack transmission makes the lead-acid battery group to the instruction of the generator motor output power, described control unit to it is described after
Electric appliance unit sends the instruction for keeping the relay unit in running order, and the lead-acid battery group starts to the power generation electricity
Motivation output power.
Compared with the existing technology, battery system of the present invention has the advantage that
In battery system provided by the invention, when being cold-started the engine of automobile, control unit is to lithium ion battery
Group sends the instruction for making Li-ion batteries piles generator motor output power, and control unit makes to generator motor transmission simultaneously
Instruction of the generator motor work under electric model, generator motor start to transport under the electric power that Li-ion batteries piles provide
Row, and engine is driven to run, to realize cold start-up engine.With use lead-acid battery group for electricity generation and electromotion in the prior art
Machine provide electric power compared to be cold-started engine, due to Li-ion batteries piles operating temperature range than lead-acid battery group work
Temperature range is big, and in low temperature, and Li-ion batteries piles are fewer than lead-acid battery group energy consumption, the electric power phase that Li-ion batteries piles provide
Electric power than providing in lead-acid battery group is more stable, thus when temperature is lower, use Li-ion batteries piles for generator motor
The number of starting can be reduced to be cold-started engine by providing electric power, reduce the waste of fuel oil, be passed through so as to improve the fuel oil of vehicle
Ji property.
Another object of the present invention is to propose a kind of control method of battery system, to solve cold start-up hair at low temperature
The technical issues of leading to the fuel economy of vehicle when motivation because of the unstable power that lead-acid battery group provides reduces.To reach
Above-mentioned purpose, the technical scheme of the present invention is realized as follows:
A kind of control method of battery system, comprising:
When being cold-started the engine of automobile, control unit makes the Li-ion batteries piles to Li-ion batteries piles transmission
The instruction of generator motor output power, described control unit make the generator motor to generator motor transmission simultaneously
Work the instruction under electric model, and the generator motor is under the electric power that the Li-ion batteries piles provide, described in starting
Engine.
Further, the control method of the battery system further include:
When the engine, which executes, to be restarted after idle running is shut down, described control unit is sent out to the Li-ion batteries piles
The instruction for making the Li-ion batteries piles generator motor output power is sent, described control unit is simultaneously to the power generation
Motor sends the instruction for making the generator motor work under electric model, and the generator motor is in the lithium-ion electric
Under the electric power that pond group provides, start the engine.
Preferably, the control method of the battery system further include:
When the engine is in high load capacity operating condition, it is described that described control unit is sent to the Li-ion batteries piles
The instruction of generator motor output power, meanwhile, described control unit makes the electricity generation and electromotion to generator motor transmission
Instruction of the machine work under electric model, the generator motor and the engine drive automobile jointly；
Alternatively,
When the engine is in high load capacity operating condition, described control unit is simultaneously to Li-ion batteries piles and described
Lead-acid battery group send be the generator motor output power instruction, meanwhile, described control unit is to the electricity generation and electromotion
Machine sends the instruction for making the generator motor work under electric model, and the generator motor drives jointly with the engine
Electrical automobile.
Preferably, the control method of the battery system further include:
When the engine is in running on the lower load, and when the lead-acid battery group monitoring device monitors the plumbic acid
The electricity of battery pack is lower, when the Li-ion batteries piles monitoring device monitors that the electricity of the Li-ion batteries piles is lower,
It is instruction that the lead-acid battery group charges that described control unit is sent to the lead-acid battery group, and described control unit is to described
The instruction that Li-ion batteries piles send as Li-ion batteries piles charging, described control unit is simultaneously to the generator motor
Sending makes the instruction of the generator motor work in generate mode, and the generator motor utilizes engine output
Power is that the lead-acid battery group and the Li-ion batteries piles charge.
Further, the control method of the battery system further include:
When starting the engine, the electric power that the Li-ion batteries piles are capable of providing is not enough to start described start
Machine, described control unit refer to the lead-acid battery group generator motor output power to lead-acid battery group transmission
It enables, to start the engine；
Alternatively,
When starting the engine, the electric power that the Li-ion batteries piles are capable of providing is not enough to start described start
Machine, described control unit simultaneously to the Li-ion batteries piles and the lead-acid battery group transmission make the Li-ion batteries piles and
The lead-acid battery group is the generator motor output power instruction jointly, to start the engine.
Possessed advantage is identical compared with the existing technology with above-mentioned battery system for the control method of the battery system,
This is repeated no more.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of battery system described in the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, battery system provided in an embodiment of the present invention includes: Li-ion batteries piles；Generator motor, power generation
The connection of the engine of motor and automobile, generator motor are electrically connected with Li-ion batteries piles；Control unit, control unit difference
It is connect with generator motor and Li-ion batteries piles signal；When being cold-started engine, control unit is sent out to Li-ion batteries piles
The instruction for making Li-ion batteries piles generator motor output power is sent, control unit makes to generate electricity to generator motor transmission simultaneously
Instruction of the electric motor operation under electric model, generator motor start engine under the electric power that Li-ion batteries piles provide.
In battery system provided in an embodiment of the present invention, when be cold-started automobile engine when, control unit to lithium from
Sub- battery pack sends the instruction for making Li-ion batteries piles generator motor output power, and control unit is simultaneously to generator motor
The instruction for making generator motor work under electric model is sent, generator motor is opened under the electric power that Li-ion batteries piles provide
Begin to run, and engine is driven to run, to realize cold start-up engine.With use in the prior art lead-acid battery group for power generation
Powering electric motors are compared to be cold-started engine, since the operating temperature range of Li-ion batteries piles is than lead-acid battery group
Operating temperature range is big, and in low temperature, and Li-ion batteries piles are fewer than lead-acid battery group energy consumption, the electricity that Li-ion batteries piles provide
Power is more stable compared to the electric power that lead-acid battery group provides, thus when temperature is lower, use Li-ion batteries piles for power generation electricity
Motivation, which provides electric power, can reduce the number of starting to be cold-started engine, the waste of fuel oil be reduced, so as to improve the combustion of vehicle
Oily economy.In addition, Li-ion batteries piles is used to provide electric power to be cold-started engine, with use plumbic acid electricity for generator motor
Chi Zuwei generator motor provides electric power and compares to be cold-started engine, can mention to avoid because of lead-acid battery group for generator motor
It is too fast come electric quantity consumption when being cold-started engine for electric power and lead to the frequent charge and discharge of lead-acid battery group, thus reduce lead-acid battery
The number and frequency of the charge and discharge of group, so as to prevent lead-acid battery group from leading to reduced service life because of frequent charge and discharge.
It is noted that generator motor can work under electric model, the electricity provided using Li-ion batteries piles
Power starts engine；Generator motor can also work in generate mode, and the power-conversion by engine output is electric power, and
By power Transmission to Li-ion batteries piles, electric power is stored in Li-ion batteries piles, Li-ion batteries piles are filled in realization
Electricity.The generator motor for meeting above two operating mode has BSG motor.
Please continue to refer to Fig. 1, battery system provided in an embodiment of the present invention further includes lead-acid battery group, lead-acid battery group with
The connection of control unit signal, and lead-acid battery group is connect with generator motor；Control unit makes plumbic acid to lead-acid battery group transmission
Battery pack is the instruction of generator motor output power, and control unit makes generator motor work to generator motor transmission simultaneously
Instruction under electric model, lead-acid battery group are the electric power that generator motor provides, and start engine.When starting engine
When, when control unit judges the not enough power supply in Li-ion batteries piles to provide electric power for generator motor to start engine,
Control unit can send the instruction for making lead-acid battery group generator motor output power to lead-acid battery group, pass through plumbic acid electricity
The electric power of Chi Zuwei generator motor output starts engine.
Please continue to refer to Fig. 1, in order to facilitate control unit respectively to Li-ion batteries piles, lead-acid battery group and power generation electricity
Motivation is controlled, battery system provided in an embodiment of the present invention further include: for monitoring the plumbic acid of the electricity of lead-acid battery group
Battery pack monitoring device, the Li-ion batteries piles monitoring device of the electricity for monitoring Li-ion batteries piles, and for monitoring
The motor monitoring device of the operating mode of generator motor；Lead-acid battery group monitoring device is connect with control unit signal, control
The electricity for the lead-acid battery group that unit is monitored according to lead-acid battery group monitoring device, to lead-acid battery group and generator motor
Send the instruction for lead-acid battery group charging；Li-ion batteries piles monitoring device is connect with control unit signal, control unit root
According to the electricity for the Li-ion batteries piles that Li-ion batteries piles monitoring device is monitored, to Li-ion batteries piles and generator motor
Send the instruction for Li-ion batteries piles charging；Motor monitoring device is connect with control unit signal, and control unit is according to motor
The operating mode for the generator motor that monitoring device monitors makes generator motor transformation working pattern to generator motor transmission
Instruction.
When it is implemented, the electricity of Li-ion batteries piles monitoring device monitoring Li-ion batteries piles, and by the information about power
Control unit is fed back to, is lithium-ion electric so that control unit is judged and sent to Li-ion batteries piles and generator motor
The instruction of pond group charging stops being Li-ion batteries piles alternatively, control unit is sent to Li-ion batteries piles and generator motor
The instruction of charging；Lead-acid battery group monitoring device monitors electricity, the voltage of lead-acid battery group, and the information about power is fed back to control
Unit processed judges so as to control unit and sends the finger to charge for lead-acid battery group to lead-acid battery group and generator motor
It enables, alternatively, control unit sends the instruction for stopping charging for lead-acid battery group to lead-acid battery group and generator motor；Motor prison
The operating mode of device monitoring generator motor is surveyed, and the operating mode information is fed back into control unit, so as to control unit
It judges and sends the instruction for making generator motor transformation working pattern to generator motor.It is monitored by Li-ion batteries piles
Device is monitored the electricity of Li-ion batteries piles, is carried out by electricity of the lead-acid battery group monitoring device to lead-acid battery group
Monitoring, and be monitored by operating mode of the motor monitoring device to generator motor, it can prevent because single by control
The interference of signal occurs when member is directly monitored Li-ion batteries piles, lead-acid battery group and generator motor respectively, thus
Facilitate control of the control unit respectively to Li-ion batteries piles, lead-acid battery group and generator motor.
In addition, being monitored by electricity of the Li-ion batteries piles monitoring device to Li-ion batteries piles and believing the electricity
Breath feeds back to control unit, is monitored by electricity of the lead-acid battery group monitoring device to lead-acid battery group and believes the electricity
Breath feeds back to control unit, and control unit is sentenced according to the information about power of Li-ion batteries piles and the information about power of lead-acid battery group
It is disconnected whether to need to charge to Li-ion batteries piles and lead-acid battery group, or, if it needs to stop to Li-ion batteries piles and lead
The charging of sour battery pack, can be to avoid being in too low for a long time because of the electricity in Li-ion batteries piles and lead-acid battery group after, cause
It is subsequent when charging to Li-ion batteries piles and lead-acid battery group there is a phenomenon where can not filling, and can prevent to lithium-ion electric
There is a phenomenon where overcharging when pond group and lead-acid battery group charge, so as to extend making for Li-ion batteries piles and lead-acid battery group
Use the service life.
It is noted that Li-ion batteries piles monitoring device can also monitor the voltage of Li-ion batteries piles, temperature etc.,
And the information of voltage of Li-ion batteries piles, temperature information etc. are fed back into control unit, so that control unit is to lithium ion battery
The working condition of group adjusts, and improves the working efficiency of Li-ion batteries piles, and extend the service life of Li-ion batteries piles；
Lead-acid battery group monitoring device can also monitor the voltage of lead-acid battery group, temperature etc., and by the information of voltage of lead-acid battery group,
Temperature information etc. feeds back to control unit, so that working condition of the control unit to lead-acid battery group adjusts, improves plumbic acid
The working efficiency of battery pack, and extend the service life of lead-acid battery group.
It is worth noting that referring to Fig. 1, control unit can also be controlled by control Li-ion batteries piles monitoring device
The work of preparing lithium ion battery group is controlled the work of lead-acid battery group by control lead-acid battery group monitoring device, passes through control
Motor monitoring device processed controls the work of generator motor.
Please continue to refer to Fig. 1, battery system provided in an embodiment of the present invention further includes for exporting Li-ion batteries piles
Low voltage transition be high voltage electric pressure converter, Li-ion batteries piles pass through the high voltage electrical of electric pressure converter and automobile
Attachment electrical connection；Lead-acid battery group is electrically connected with the low-voltage electric attachments of automobile.Needed for the low-voltage electric attachments of automobile
Electricity is less, and electricity needed for high voltage electrical attachment is more, thus, use Li-ion batteries piles for high voltage electric accessories
Electric power is provided, lead-acid battery group is used to provide electric power for low-voltage electric attachments, it can be to avoid because using lead-acid battery group for height
Voltage electric attachment provides electric power and causes the electric quantity consumption of lead-acid battery group too fast, leads to the number of lead-acid battery group charge and discharge
Increase with frequency, so as to reduce the damage to lead-acid battery group, extends the service life of lead-acid battery group.
In order to further extend the service life of lead-acid battery group, please continue to refer to Fig. 1, electricity provided in an embodiment of the present invention
Cell system further includes relay unit, and relay unit is connect with control unit signal, and relay unit is electric with plumbic acid respectively
Pond group and motor control assembly electrical connection；When needing lead-acid battery group to generator motor output power, control unit is to lead
Sour battery pack transmission makes lead-acid battery group to the instruction of generator motor output power, and control unit makes to relay unit transmission
The in running order instruction of relay unit, lead-acid battery group start to generator motor output power.When needing plumbic acid electric
When Chi Zuxiang generator motor output power, control unit makes lead-acid battery group to power generation to the transmission of lead-acid battery group control device
The instruction of motor output electric power, lead-acid battery group control device, which receives, to be instructed and controls lead-acid battery group, makes lead-acid battery group
To generator motor output power, meanwhile, control unit keeps relay unit in running order to relay unit transmission
Instruction, relay unit, which receives, to be instructed and executes, and realizes that lead-acid battery group is executed to generator motor output power；When not needing
When lead-acid battery group is to generator motor output power, control unit makes lead-acid battery group to the transmission of lead-acid battery group control device
Stop the instruction to generator motor output power, lead-acid battery group control device, which receives, to be instructed and control lead-acid battery group, is made
Lead-acid battery group stops to generator motor output power, meanwhile, control unit makes relay unit to relay unit transmission
The instruction being in close state, relay unit, which receives, to be instructed and executes, and it is defeated to generator motor to realize that lead-acid battery group stops
Electric power out；When do not need lead-acid battery group it is lower to the electricity of generator motor output power or lead-acid battery group when, control
Unit can send the instruction for being in close state relay unit to relay unit first, make lead-acid battery group and power generation
Electrical connection between motor disconnects, prevent because lead-acid battery group constantly to generator motor output power due to lead to lead-acid battery
The electric quantity consumption of group is too fast, causes the frequent charge and discharge of lead-acid battery group, to further extend the service life of lead-acid battery group.
It is noted that when generator motor work in generate mode, can be with when charging to lead-acid battery group
It, can also to control the charging to lead-acid battery group by the way that relay unit is arranged between generator motor and lead-acid battery group
Lead-acid battery group directly to be connect with generator motor, to realize the charging to lead-acid battery group.
The embodiment of the present invention also provides a kind of control method of battery system, when being cold-started the engine of automobile, control
Unit is sent to Li-ion batteries piles makes the instruction of Li-ion batteries piles generator motor output power, control unit and meanwhile to
Generator motor sends the instruction for making generator motor work under electric model, and generator motor is provided in Li-ion batteries piles
Electric power under, start engine.
Possessed advantage is identical compared with the existing technology with above-mentioned battery system for the control method of the battery system,
This is repeated no more.
In above-mentioned battery system, the control method of battery system provided in an embodiment of the present invention further include: work as engine
When execution idle running restarts after shutting down, control unit makes Li-ion batteries piles generator motor to Li-ion batteries piles transmission
The instruction of output power, control unit send the finger for making generator motor work under electric model to generator motor simultaneously
It enables, generator motor starts engine under the electric power that Li-ion batteries piles provide.When engine executes after idle running is shut down again
When starting, Li-ion batteries piles is used to provide electric power for generator motor to restart engine, can give full play to lithium from
Sub- battery pack has the advantage of high capacity, and during engine frequent starting, Li-ion batteries piles can be electricity generation and electromotion
Machine provides sufficient electric power, so as to which function is started to start the dynamic property so as to improve vehicle in time；In addition, using lithium ion battery
Group for generator motor provides electric power to restart engine, can to avoid because using lead-acid battery group offer electric power come again
The number and frequency for causing lead-acid battery group charge and discharge when starting engine increase, and lead to the reduced service life of lead-acid battery.
In order to improve the dynamic property of vehicle, and further improve the fuel economy of vehicle, is provided in the embodiment of the present invention
Battery system control method in, when engine is in high load capacity operating condition, control unit to Li-ion batteries piles transmission is
The instruction of generator motor output power, meanwhile, control unit makes generator motor work electronic to generator motor transmission
Instruction under mode, generator motor and engine drive automobile jointly；Alternatively, when engine is in high load capacity operating condition, control
Unit processed sends the instruction for generator motor output power to Li-ion batteries piles and lead-acid battery group simultaneously, meanwhile, control
Unit sends the instruction for making generator motor work under electric model to generator motor, and generator motor is common with engine
Drive automobile.
Electric power is provided for generator motor by Li-ion batteries piles or Li-ion batteries piles and lead-acid battery group, is made
Generator motor and engine drive automobile jointly, can increase the power resources of automobile in motion, so as to improve vehicle
Dynamic property；In addition, the electric power provided by Li-ion batteries piles or Li-ion batteries piles and lead-acid battery group, makes power generation electricity
Motivation and engine drive automobile jointly, can share a part of load of engine, thus can prevent because engine is long-term
The work efficiency drop that engine is caused when in high load capacity operating condition, leads to fuel oil malcombustion, causes the waste of fuel oil, from
And further improve the fuel economy of vehicle, and improve the working efficiency of engine.
In order to reduce the energy waste of automobile in motion, the control method of battery system provided in an embodiment of the present invention
In, when engine is in running on the lower load, and works as lead-acid battery group monitoring device and monitors that the electricity of lead-acid battery group is lower,
When Li-ion batteries piles monitoring device monitors that the electricity of Li-ion batteries piles is lower, control unit is to lead-acid battery group transmission
The instruction of lead-acid battery group charging, control unit send the instruction charged for Li-ion batteries piles, control to Li-ion batteries piles
Unit is sent to generator motor simultaneously makes the instruction of generator motor work in generate mode, and generator motor, which utilizes, to be started
The power of machine output is that lead-acid battery group and Li-ion batteries piles charge.It is designed in this way, it is possible to reduce engine is in underload
The waste for the extra power that engine exports when operating condition, and then the energy waste of automobile in motion is reduced, to further change
The fuel economy of kind vehicle.When automobilism is more stable, lead-acid battery group and Li-ion batteries piles can be carried out simultaneously
Charging, can also individually charge to lead-acid battery group or Li-ion batteries piles.
In order to improve reliability when starting engine, in embodiments of the present invention, when starting the engine, control unit
First according to the electricity in Li-ion batteries piles, judge whether enough starting is started for electric power that Li-ion batteries piles are capable of providing
Machine, if the judgment is No, then it is that generator motor output power instructs that control unit is sent to lead-acid battery group, is started with starting
Machine；Alternatively, when starting the engine, control unit according to the electricity in Li-ion batteries piles, judges Li-ion batteries piles first
Whether the electric power being capable of providing starts engine enough, if the judgment is No, then control unit simultaneously to Li-ion batteries piles and
It is that generator motor output power instructs that lead-acid battery group, which is sent, to start engine.In cold start-up engine, alternatively, being expert at
During vehicle, engine is executed after idle running is shut down when needing to restart, in Li-ion batteries piles electricity may be insufficient with for
Generator motor provides enough electric power, to start engine, at this point, control unit to lead-acid battery group or simultaneously to lithium from
It is that generator motor output power instructs that sub- battery pack and lead-acid battery group, which are sent, is that generator motor is defeated by lead-acid battery group
Electric power out, or by Li-ion batteries piles and lead-acid battery group while being generator motor output power, to make up lithium ion
The deficiency of electricity in battery pack effectively increases reliability when starting engine so that engine smoothly starts.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of battery system characterized by comprising
Li-ion batteries piles；
The driving engine of generator motor, the generator motor and automobile connects, the generator motor and the lithium from
Sub- battery pack electrical connection；
Control unit, described control unit are connect with the generator motor and the Li-ion batteries piles signal respectively；When cold
When starting the engine, described control unit makes the Li-ion batteries piles hair to Li-ion batteries piles transmission
The instruction of electric motor output electric power, described control unit make the generator motor work to generator motor transmission simultaneously
Make the instruction under electric model, the generator motor starts the hair under the electric power that the Li-ion batteries piles provide
Motivation；
Lead-acid battery group, the lead-acid battery group are connect with described control unit signal, and the lead-acid battery group and the hair
The electronic mechatronics of electricity；
Described control unit makes the lead-acid battery group generator motor output power to lead-acid battery group transmission
Instruction, described control unit makes generator motor work under electric model to generator motor transmission simultaneously
Instruction, the lead-acid battery group are the electric power that the generator motor provides, and start the engine；
Wherein, the battery system further include: for monitoring the lead-acid battery group monitoring device of the electricity of the lead-acid battery group,
For monitoring the Li-ion batteries piles monitoring device of the electricity of the Li-ion batteries piles, and for monitoring the electricity generation and electromotion
The motor monitoring device of the operating mode of machine；
The lead-acid battery group monitoring device is connect with described control unit signal, and described control unit is according to the lead-acid battery
The electricity for the lead-acid battery group that group monitoring device is monitored, Xiang Suoshu lead-acid battery group and the generator motor are sent
For the instruction of lead-acid battery group charging；
The Li-ion batteries piles monitoring device is connect with described control unit signal, and described control unit is according to the lithium ion
The electricity for the Li-ion batteries piles that battery pack monitoring device is monitored, Xiang Suoshu Li-ion batteries piles and power generation electricity
The instruction that motivation sends as Li-ion batteries piles charging；
The motor monitoring device is connect with described control unit signal, and described control unit is supervised according to the motor monitoring device
The operating mode of the generator motor measured, the transmission of Xiang Suoshu generator motor make the generator motor conversion work mould
The instruction of formula.
2. battery system according to claim 1, which is characterized in that the battery system further include for by the lithium from
The low voltage transition of sub- battery pack output is the electric pressure converter of high voltage, and the Li-ion batteries piles are converted by the voltage
Device is electrically connected with the high voltage electrical attachment of automobile；
The lead-acid battery group is electrically connected with the low-voltage electric attachments of automobile.
3. battery system according to claim 2, which is characterized in that the battery system further includes relay unit, institute
Relay unit is stated to connect with described control unit signal, and the relay unit respectively with the lead-acid battery group and described
Electricity generation and electromotion mechatronics；
When needing the lead-acid battery group to the generator motor output power, described control unit is to the lead-acid battery
Group, which is sent, makes the lead-acid battery group to the instruction of the generator motor output power, and described control unit is to the relay
Unit sends the instruction for keeping the relay unit in running order, and the lead-acid battery group starts to the generator motor
Output power.
4. a kind of control method of battery system characterized by comprising
When being cold-started the engine of automobile, control unit makes the Li-ion batteries piles generate electricity to Li-ion batteries piles transmission
The instruction of motor output electric power, described control unit make the generator motor work to generator motor transmission simultaneously
Instruction under electric model, the generator motor start described in starting under the electric power that the Li-ion batteries piles provide
Machine；
When the engine, which executes, to be restarted after idle running is shut down, described control unit makes to Li-ion batteries piles transmission
The Li-ion batteries piles are the instruction of the generator motor output power, and described control unit is simultaneously to the electricity generation and electromotion
Machine sends the instruction for making the generator motor work under electric model, and the generator motor is in the Li-ion batteries piles
Under the electric power of offer, start the engine；
The control method of the battery system further include:
When the engine is in running on the lower load, and when lead-acid battery group monitoring device monitors the lead-acid battery group
Electricity is lower, when the Li-ion batteries piles monitoring device monitors that the electricity of the Li-ion batteries piles is lower, the control
It is instruction that the lead-acid battery group charges that unit is sent to the lead-acid battery group, and described control unit is to the lithium-ion electric
The instruction that pond group sends as Li-ion batteries piles charging, described control unit make institute to generator motor transmission simultaneously
The instruction of generator motor work in generate mode is stated, the generator motor is institute using the power of engine output
State lead-acid battery group and Li-ion batteries piles charging.
5. the control method of battery system according to claim 4, which is characterized in that the control method of the battery system
Further include:
When the engine is in high load capacity operating condition, it is the power generation that described control unit is sent to the Li-ion batteries piles
The instruction of motor output electric power, meanwhile, described control unit makes the generator motor work to generator motor transmission
Make the instruction under electric model, the generator motor and the engine drive automobile jointly；
Alternatively,
When the engine is in high load capacity operating condition, described control unit is simultaneously to the Li-ion batteries piles and lead-acid battery
The instruction that group sends as the generator motor output power, meanwhile, described control unit makes to generator motor transmission
Instruction of the generator motor work under electric model, the generator motor and the engine drive automobile jointly.
6. according to the control method of any battery system of claim 4-5, which is characterized in that the control of the battery system
Method processed further include:
When starting the engine, the electric power that the Li-ion batteries piles are capable of providing is not enough to start the engine, institute
Stating control unit makes the lead-acid battery group generator motor output power instruction to lead-acid battery group transmission, with starting
The engine；
Alternatively,
When starting the engine, the electric power that the Li-ion batteries piles are capable of providing is not enough to start the engine, institute
Stating control unit makes Li-ion batteries piles and described to the Li-ion batteries piles and lead-acid battery group transmission simultaneously
Lead-acid battery group is the generator motor output power instruction jointly, to start the engine.
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| CN101367381A (en) * | 2007-08-17 | 2009-02-18 | 奇瑞汽车股份有限公司 | Weak hybrid power automobile motor control method |
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|---|---|---|---|---|
| CN101367381A (en) * | 2007-08-17 | 2009-02-18 | 奇瑞汽车股份有限公司 | Weak hybrid power automobile motor control method |
| CN102044902A (en) * | 2009-10-20 | 2011-05-04 | 徐辛 | Lithium-ion automobile starting storage battery with super capacitor function |
| CN103534135A (en) * | 2011-03-16 | 2014-01-22 | 约翰逊控制技术公司 | Systems and methods for overcharge protection and charge balance in combined energy source systems |
| CN104442429A (en) * | 2013-09-12 | 2015-03-25 | 柯国平 | Vehicle starting power source with double-battery system |
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