CN106043176A - Power supply system for vehicle - Google Patents
Power supply system for vehicle Download PDFInfo
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- CN106043176A CN106043176A CN201610221595.2A CN201610221595A CN106043176A CN 106043176 A CN106043176 A CN 106043176A CN 201610221595 A CN201610221595 A CN 201610221595A CN 106043176 A CN106043176 A CN 106043176A
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- Prior art keywords
- mentioned
- switch
- battery
- connection status
- state
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K6/485—Motor-assist type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/30—Auxiliary equipments
- B60W2510/305—Power absorbed by auxiliaries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
-
- 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
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Battery Mounting, Suspending (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Charge By Means Of Generators (AREA)
Abstract
Provided is a power supply system for vehicles comprising an ISG (2), a set of protected loads (3), a lead-acid battery (4), a lithium-ion battery (5), a switch (SW1) for making and breaking a connection between the lead-acid battery (4) and the ISG (2), a switch (SW3) for making and breaking a connection between the lead-acid battery (4) and the set of protected loads (3), a switch (SW4) for making and breaking a connection between the lithium-ion battery (5) and the set of protected loads (3) and an ECU (10) for controlling the switches (SW1, SW3 and SW4), wherein the ECU (10) is adapted to the switch (SW1 ) such that it interrupts its connection, one of the switches (SW3 and SW4) such that it produces its connection, and to control the other thereof so that it interrupts its connection to the ISG (2) so to control, to be driven, to assist in the running of the vehicle.
Description
Technical field
The present invention relates to control the automotive power supply system of the supply of electric power state of vehicle.
Background technology
As described in Patent Document 1, possessing the secondary such as Ni-MH battery or lithium ion battery
In the automotive power supply system of battery, using in parallel with secondary cell even for the subsidiary engine as electric loading
Connect, thus make the subsidiary engine being connected in parallel stably work.Further, lithium ion battery or nickel
Hydrogen battery is connected to instrument or auto-navigation system etc. to be needed to make voltage stabilization to be steady state value
Subsidiary engine (is loaded by protection), and it is disposable that lead battery is connected to wiper or fan etc.
Subsidiary engine (typically load).
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2011-178384 publication
Summary of the invention
The problem that invention is to be solved
But, the automotive power supply system described in patent documentation 1 is being connected upon regeneration
As electromotor perform function and when traction time axle shaft rotate and support vehicles driving
Motor generator carry out power supply control in the case of, electronic in order to use in assist control
Electromotor, need moment with big electric propulsion output, therefore by lead battery and lithium
Both ion batteries (or Ni-MH battery) carry out the driving of motor generator.
But, when carrying out this supply of electric power, the electric discharge of lead battery becomes big, needs to carry out
The charging of lead battery.The charge efficiency of lead battery is compared with lithium ion battery or Ni-MH battery
Difference, charging requires time for, and therefore, in order to carry out the charging of this lead battery, drives electromotor
The frequency of dynamic electromotor becomes many, and therefore result is to cause the deterioration of fuel efficiency.
It addition, when providing electric power to perform assist control from lithium ion battery or Ni-MH battery
Time, according to this lithium ion battery or the charged state of Ni-MH battery, sometimes cannot be from lithium ion
Battery or Ni-MH battery provide electric power to by protection load stabilization.
Therefore, it is an object of the invention to provide and can suppress the deterioration of fuel efficiency and make electricity negative
Carry the automotive power supply system stably worked.
For solving the scheme of problem
One mode of the invention solving the automotive power supply system of the problems referred to above is that vehicle is used
Power-supply system, has: motor, and it generates electricity when vehicle travels, and assists above-mentioned car
Traveling；Electric loading, it needs stable supply of electric power in the traveling of above-mentioned vehicle；
1st battery, its be connected with above-mentioned motor and above-mentioned electric loading and to above-mentioned motor and
Above-mentioned electric loading provides electric power；2nd battery, they are different from above-mentioned 1st battery, with above-mentioned electricity
Motivation and above-mentioned electric loading connect and provide electric power to above-mentioned motor and above-mentioned electric loading,
Above-mentioned automotive power supply system has: the 1st switch, and it forms above-mentioned 1st battery and above-mentioned electricity
The connection status of motivation or notconnect state；2nd switch, its formed above-mentioned 1st battery and
The connection status of above-mentioned electric loading or notconnect state；3rd switch, it forms the above-mentioned 2nd
Battery and the connection status of above-mentioned electric loading or notconnect state；And control portion, its control
Make above-mentioned 1st switch, above-mentioned 2nd switch and the connection status or non-of above-mentioned 3rd switch
Connection status, above-mentioned control portion is controlling to assist above-mentioned vehicle by the driving of above-mentioned motor
In the case of traveling, it is notconnect state by above-mentioned 1st on-off control, switchs the above-mentioned 2nd
When being connection status with either one in above-mentioned 3rd switch, will above-mentioned 2nd switch with above-mentioned the
The opposing party's on-off control in 3 switches is notconnect state.
Invention effect
According to the present invention, when performing assist control, provide electricity from the 2nd battery to motor
Power, the either direction electric loading from the 1st battery or the 2nd battery provides electric power, therefore can
Suppress the deterioration of fuel efficiency and make electric loading stably work.
Accompanying drawing explanation
Fig. 1 is the figure of the automotive power supply system representing an embodiment of the invention, is
Represent the pie graph of the vehicle possessing automotive power supply system.
Fig. 2 represents the automotive power supply system of an embodiment of the invention, passes through
The figure that the circuit that the connection status of switch and the combination of notconnect state realize is constituted.
Fig. 3 is the figure of the automotive power supply system representing an embodiment of the invention, is
Represent the figure that circuit when electromotor restarts is constituted.
Fig. 4 is the figure of the automotive power supply system representing an embodiment of the invention, is
Represent lithium ion battery charged state low in the case of assist control time circuit constitute
Figure.
Fig. 5 is the figure of the automotive power supply system representing an embodiment of the invention, is
Circuit when representing the assist control in the case of the charged state height of lithium ion battery is constituted
Figure.
Description of reference numerals
1 vehicle
2 ISG (motor)
3 by protection load (electric loading)
4 lead batteries (the 1st battery)
5 lithium ion batteries (the 2nd battery)
10 ECU (control portion)
SW1 switchs
SW3 switchs
SW4 switchs
Detailed description of the invention
Hereinafter, embodiments of the present invention are described in detail with reference to accompanying drawings.In FIG, peace
Vehicle 1 equipped with the automotive power supply system of an embodiment of the invention is configured to bag
Include: electromotor 7, as motor ISG (Integrated Starter Generator: collection
Become starter-generator) 2, as electric loading by protection load 3, typically load 6, conduct
The lead battery 4 of the 1st battery and the lithium ion battery 5 as the 2nd battery.
Electromotor 7 includes such as petrol engine.Electromotor 7 is configured to the interior of following 4 circulations
Combustion engine: carry out including that air inlet is rushed in piston carries out 2 reciprocating periods in cylinder
A succession of 4 strokes of journey, compression stroke, expansion stroke and exhaust stroke, and in pressure
Lighting a fire in the period of contracting stroke and expansion stroke, electromotor 7 produces and makes vehicle travel
Power.
ISG2 is linked by the bent axle of transmission band 8 with electromotor 7, is entered by the traveling of vehicle 1
Row generating, and assist the traveling of vehicle 1.That is, ISG2 holds as electromotor and motor
Row function.ISG2 also holds as the starter making electromotor 7 restart from halted state
Row function.
It is the electricity needing stable supply of electric power in the traveling of vehicle 1 by protection load 3
Load, including such as instrument or auto-navigation system.
Usually load 6 is to need not stable supply of electric power with compared with protection load 3
, the interim electric loading used, including such as wiper or cooling fan.
Lead battery 4 and lithium ion battery 5 include chargeable secondary cell, with ISG2 and quilt
Protection load 3 connects and to ISG2 with by protection load 3 offer electric power.Lithium ion battery 5
It is with lead battery 4 phase specific energy density is high and the charging interval is short and rechargeable batteries.
The number etc. of the unit of lead battery 4 and lithium ion battery 5 is set so that and produces the defeated of about 12V
Go out voltage.
It addition, vehicle 1 has switch SW1, switch SW2, switch SW3 and switch SW4.
Switch SW1, switch SW2, switch SW3, switch SW4 and lithium ion battery 5 one
Change, constitute lithium ion battery bag 11.
Switch SW1 forms connection status or the notconnect state of lead battery 4 and ISG2.Open
Close SW3 form lead battery 4 and loaded connection status or the notconnect state of 3 by protection.Open
Close SW4 form lithium ion battery 5 and loaded the connection status of 3 or disconnected shape by protection
State.Switch SW2 forms connection status or the notconnect state of lithium ion battery 5 and ISG2.
Thus, if switch SW3 or switch SW4 at least one party be connection status, then from
At least one party in lead battery 4 or lithium ion battery 5 is to by protection load 3 offer electric power.
Additionally, above-mentioned switch SW1～switch SW4 forms connection shape when for closure state
State, forms notconnect state when for off-state.
It addition, vehicle 1 has the ECU10 as control portion, this ECU10 controls switch
SW1～the switch connection status of SW4 or notconnect state.In other words, ECU10 control
System switch SW1～the open and-shut mode of switch SW4.It addition, ECU10 carries out the driving of ISG2
Control.Such as ECU10 is controlling to carry out the auxiliary of assisting vehicle travel by driving of ISG2
When helping control, the stop condition of regulation and the condition that restarts to set up, automatically carry out respectively
The idle stop making electromotor 7 stop and restarting controls.Additionally, ECU10 is being carried out
When idle stop controls, if the condition that restarts of regulation is set up, then ISG2 is driven to make
Electromotor 7 restarts.So, vehicle 1 have regulation condition set up in the case of from
Stop the function travelling or recovering to exercise dynamicly.
Switch SW1, when performing assist control, is controlled to be notconnect state by ECU10, and
Switch SW2 is controlled as connection status.Thus, lead battery 4 disconnects with ISG2, only from lithium
Ion battery 5 provides electric power to ISG2, therefore can suppress the fall of the charging capacity of lead battery 4
Low, the deterioration of fuel efficiency can be suppressed.It addition, now, as switch SW3 and switch SW4
In either one when being connection status, control into the opposing party switching is notconnect state.Thus,
Either direction from lead battery 4 or lithium ion battery 5 can be protected load 3 offer electricity
Power.Accordingly, it is capable to being independent of the charged state of lithium ion battery 5 to by protection load 3 offer
Electric power.So, the automotive power supply system of an embodiment of the invention can suppress fuel oil
The deteriorating and make 3 stably being worked by protection load as electric loading of efficiency.Here, such as
Upper described, connection status refers to the state (closed state) of the junction closure of switch, disconnected
State refers to the state (open state) that the contact of switch disconnects.
It addition, ECU10 is by the situation driving the traveling controlling auxiliary vehicle 1 of ISG2
Under, in the case of the charging capacity of lithium ion battery 5 is less than the charging capacity of regulation, will
Switch SW3 controls to be connection status, controls switch SW4 for notconnect state.Thus,
In the case of the charged state of lithium ion battery 5 is in low state, can be from lead battery 4
To by protection load 3 offer electric power.Make to suppress fuel oil effect accordingly, it is capable to perform assist control
The deterioration of rate, and stably provide electric power to by protection load 3.
ECU10 makes electromotor 7 again open from halted state when performing idle stop control
In the case of Dong, control to be connection status by switch SW1, switch SW2 is controlled as non-company
Connect state, control to be notconnect state by switch SW3, switch SW4 is controlled as connection shape
State.Thus, the weight of the electric power allowing discharge capacity of lithium ion battery 5 is required more than in moment
When newly starting, electric power can be provided from lead battery 4 to ISG2, can be from lithium ion battery 5 to being protected
Load 3 offer electric power is provided.Accordingly, it is capable to protection lithium ion battery 5 is not by putting that big output causes
The impact of electricity, and stably provide electric power to by protection load 3.It addition, do not use DCDC
The electric pressure converters such as transducer just can control to restart, and can suppress on the cost of whole system
Rise.
So, the automotive power supply system of an embodiment of the invention is by switch SW1
Configuration ISG2 and lead battery 4, by switch SW2 configuration ISG2 and lithium ion battery 5, thus
The electric power supplied merely with the lithium ion battery that the recyclability from energy is high just can control
The driving of ISG2, can perform assist control and make to suppress the deterioration of fuel efficiency.
It addition, by switch SW3 configuration by protection load 3 and lead battery 4, by switch
SW4 configuration is by protection load 3 and lithium ion battery 5, thus when the charging of lithium ion battery 5
During capacity height, lithium-ion electric can be worked as from lithium ion battery 5 to by protection load 3 offer electric power
When the charging capacity in pond 5 is low, can be from lead battery 4 to by protection load 3 offer electric power.Therefore,
Even if in the case of the charging capacity of lithium ion battery 5 is low, also assist control can be performed also
And stably provide electric power to by protection load 3.
In addition it is also possible to be, when the automotive power supply system of other embodiments of the present invention
When performing assist control, regardless of the size of the charging capacity of lithium ion battery 5, equal energy
Often from lead battery 4 to by protection load 3 offer electric power.In this case, ECU10 will
Switch SW1 control is notconnect state, controls to be connection status by switch SW2, will switch
SW3 controls to be connection status, controls switch SW4 for notconnect state.Like this,
ECU10 need not monitor that the charging capacity of lithium ion battery 5 just can be by simply controlling execution
Assist control makes to suppress the deterioration of fuel efficiency, and stably carries to by protection load 3
For electric power.It addition, in the case of performing to need the big assist control exported, also to being protected
Protect load 3 and electric power is stably provided.
Hereinafter, the automotive power supply system formed by the switching of switch SW1～SW4 is described
Each circuit constitute.
As in figure 2 it is shown, in this automotive power supply system, ECU10 will switch SW1～SW4
Control to be connection status or notconnect state, be consequently formed circuit composition 1～circuit is constituted
11。
In fig. 2, circuit constitutes 1 is to be " to forbid the charge and discharge of lithium ion battery at vehicle-state
Electricity time " time formed.As an example, it it is under low temperature environment and the few shape of the generated energy of ISG2
State.In this circuit constitutes 1, switch SW1, SW2, SW3, SW4 are controlled respectively
For connection status, notconnect state, connection status, notconnect state.1 is constituted at circuit
In, switch SW2 and switch SW4 is set to notconnect state, makes lithium ion battery (at figure
In be designated as Li battery) 5 with power-supply system disconnect, thus forbid the discharge and recharge of lithium ion battery 5.
It addition, switch SW1 and switch SW3 is set to connection status, the electricity that will be produced by ISG2
The electric power of power or lead battery 4 is to by protection load 3 offer.Thus, steady by protection load 3
Surely work.
It addition, at low ambient temperatures, lithium ion battery 5 can discharged power little, therefore have
May be to unstable by the supply of electric power of protection load 3.Therefore, as circuit constitutes in the of 1,
Switch SW4 can often be controlled to be notconnect state by ECU10, controls switch SW3 for connecting
Connect state so that stably provide electric power from lead battery 4 to by protection load 3.
Additionally, under being not limited to the low temperature environment as an example record, circuit constitutes 1 can prohibited
Only formed in the case of the discharge and recharge of lithium ion battery 5.Specifically, it is included in hot environment
Under also forbid the situation of discharge and recharge of lithium ion battery 5.
Circuit constitutes 2 and is formed when vehicle-state is " (1) under low temperature environment ".Make
It is an example, is under low temperature environment and the biggest state of the generated energy of ISG2.At low temperature environment
Under, lithium ion battery 5 can discharged power (exportable electric power) little, it is therefore possible to nothing
Method provides sufficient electric power from lithium ion battery 5 to by protection load 3, but can be to lithium-ion electric
Charge in pond 5.Therefore, in this circuit constitutes 2, switch SW1, SW2, SW3, SW4
It is controlled as notconnect state, connection status, notconnect state, connection status respectively.?
Circuit is constituted in 2, by switch SW2 is set to connection status, thus with ISG2 generation
Lithium ion battery 5 is charged by electric power.It addition, (2) are lithium ion batteries 5 under low temperature environment
It is charged to the state of the degree not excessively discharged, therefore in circuit constitutes 2, passes through
Switch SW4 is set to connection status, thus from lithium ion battery 5 to by protection load 3 offer
Electric power.Thus, stably worked by protection load 3.
Circuit constitutes 3 and is formed when vehicle-state is " (2) under low temperature environment ".Make
It is an example, is under low temperature environment and the biggest state of the generated energy of ISG2 and be to need to make
The state of lithium ion battery 5 quick charge.Constitute in 3 at this circuit, switch SW1, SW2,
SW3, SW4 are controlled as notconnect state, connection status, connection status, non-company respectively
Connect state.In circuit constitutes 3, by switch SW2 is set to connection status, thus use
Lithium ion battery 5 is charged by the electric power that ISG2 produces.It addition, (3) are to need under low temperature environment
Will be to the state of lithium ion battery 5 quick charge, therefore in this circuit constitutes 3, by inciting somebody to action
Switch SW4 is set to notconnect state, switch SW3 is set to connection status, thus avoids lithium
The electric discharge of ion battery 5 and from lead battery 4 to by protection load 3 offer electric power.Thus, quilt
Protection load 3 stably works.It addition, in circuit constitutes 3, the electric power produced with ISG2
Lithium ion battery 5 is charged, from lead battery 4 to by protection load 3 offer electric power, therefore can
Rapidly lithium ion battery 5 is charged.
Circuit constitutes 4 and is formed when vehicle-state is " (1) during regeneration ".During regeneration
(1) it is the ISG2 state that carrying out regenerative electric power.In this circuit constitutes 4, switch
SW1, SW2, SW3, SW4 are individually controlled as connection status, connection status, non-company
Connect state, connection status.In circuit constitutes 4, by SW1 and switch SW2 will be switched
It is set to connection status, thus the electric power that ISG2 produces is supplied to lead battery 4 and lithium-ion electric
Pond 5, charges to lead battery 4 and lithium ion battery 5 efficiently.It addition, (1) is during regeneration
Lithium ion battery 5 is charged to the state of the degree not excessively discharged, therefore at circuit structure
Become in 4, by switch SW3 is set to notconnect state, be set to switch SW4 connect shape
State, thus from lithium ion battery 5 to by protection load 3 offer electric power.Thus, negative by protection
Carry 3 stably to work.
Circuit constitutes 5 and is formed for " (2) during regeneration " at vehicle-state.During regeneration (2)
With (1) during regeneration again it is ISG2 is carrying out the state of regenerative electric power.At this circuit
Constitute in 5, switch SW1, SW2, SW3, SW4 be individually controlled into connection status,
Connection status, connection status, notconnect state.In circuit constitutes 5, by switching
SW1 and switch SW2 is set to connection status, thus the electric power that ISG2 produces provides lead electricity
Pond 4 and lithium ion battery 5, charge efficiently to lead battery 4 and lithium ion battery 5.It addition,
During regeneration, (2) are the states that lithium ion battery 5 is not sufficiently charged, therefore at circuit
Constitute in 5, by switch SW3 is set to connection status, switch SW4 is set to disconnected
State, thus by ISG2, lithium ion battery 5 is charged, load to by protection from lead battery 4
3 provide electric power.Thus, stably worked by protection load 3.Additionally, needs to lithium from
In the case of sub-battery 5 charges rapidly, switch SW1 is set to notconnect state.
In this case, the electric power that ISG2 produces can be only provided to lithium ion battery 5.
Circuit constitutes 6 and is formed when vehicle-state is for " when restarting ".Again open
It it is the state restarted being carried out electromotor 7 by the driving of ISG2 time dynamic.At this circuit
Constitute in 6, switch SW1, SW2, SW3, SW4 be controlled as respectively connection status,
Notconnect state, notconnect state, connection status.In circuit constitutes 6, by opening
Close SW1 and be set to connection status, switch SW2 is set to notconnect state, thus such as Fig. 3 institute
Show and provide big electric power from lead battery 4 to ISG2, drive ISG2.It addition, by SW3 will be switched
It is set to notconnect state, switch SW4 is set to connection status, thus from lithium ion battery 5
To by protection load 3 offer electric power.I.e., when restarting, by the electric power of lead battery 4
Drive ISG2, from lithium ion battery 5 to by protection load 3 offer electric power, thus, protected
Load 3 stably works.So, constitute in 6 at circuit, connect ISG2 and lead battery 4
Circuit and connection are formed independently of each other by the circuit of protection load 3 and lithium ion battery 5.This
Outward, in figure 3, represent connection status when switching SW1～SW4 for Guan Bi, work as switch
Notconnect state is represented when SW1～SW4 is for disconnecting.
Circuit constitute 7 be vehicle-state be " ask lithium ion battery charging time (1) "
Time formed.Request lithium ion battery charging time (1) be in addition to regeneration time beyond need
Carry out the state of the charging of lithium ion battery 5.In this circuit constitutes 7, switch SW1,
SW2, SW3, SW4 be controlled as respectively notconnect state, connection status, connection status,
Notconnect state.In circuit constitutes 7, by switch SW2 is set to connection status, from
And provide lithium ion battery 5 by the electric power that ISG2 produces, lithium ion battery 5 is charged.Separately
Outward, by switch SW4 is set to notconnect state, switch SW3 is set to connection status,
Thus from lead battery 4 to by protection load 3 offer electric power.Thus, stable by protection load 3
Ground work.Additionally, in circuit constitutes 7, by switch SW1 is set to notconnect state,
Thus the electric loading that lead battery 4 is to general load 6 with by both protection loads 3 is discharged.Uncommon
In the case of hoping the discharge capacity of minimizing battery 4, preferably ECU10 will switch SW3 and control as non-
Connection status, controls to be connection status, from lithium ion battery 5 to being protected by switch SW4
Load 3 offer electric power, lithium ion battery 5 is charged by the electric power produced with ISG2.So, exist
Circuit is constituted in 7, in switch SW3 and switch SW4 can also be connection status or
Person's notconnect state.
Circuit constitute 8 be vehicle-state be " ask lithium ion battery charging time (2) "
Time formed.During the charging of request lithium ion battery (2) with ask the filling of lithium ion battery
During electricity, (1) is again it is need to carry out the charging of lithium ion battery 5 in addition to when regeneration
State.In this circuit constitutes 7, SW1, SW2, SW3, SW4 are the most controlled for switch
It is made as connection status, connection status, connection status, notconnect state.8 are constituted at circuit
In, by switch SW1 and switch SW2 being set to connection status, thus ISG2 is produced
Electric power provides lead battery 4 and lithium ion battery 5, efficient to lead battery 4 and lithium ion battery 5
Ground charging.It addition, by switch SW4 is set to notconnect state, switch SW3 is set to
Connection status, thus from lead battery 4 to by protection load 3 offer electric power.Thus, protected
Load 3 stably works.Additionally, the charged state at lithium ion battery 5 is in less than regulation
In the case of the state of value, preferably ECU10 will switch SW3 and control to be connection status, will open
Close SW4 and control to be notconnect state, from lead battery 4 to by protection load 3 offer electric power.Phase
Instead, in the case of the charged state at lithium ion battery 5 is in the state of more than setting
(in the case of charged state substantially abundance), switch SW3 control is by preferably ECU10
Notconnect state, controls to be connection status, from lithium ion battery 5 to being protected by switch SW4
Load 3 offer electric power is provided.So, in circuit constitutes 8, in switch SW3 and switch SW4
One can also be connection status or notconnect state.
It is to be " lead battery and the charged state of lithium ion battery at vehicle-state that circuit constitutes 9
Time good " formed.In this circuit constitutes 9, switch SW1, SW2, SW3, SW4
It is controlled as notconnect state, notconnect state, notconnect state, connection status respectively.
In circuit constitutes 9, by switch SW4 is set to connection status, thus from lithium-ion electric
Pond 5 is to by protection load 3 offer electric power.Thus, stably worked by protection load 3.This
Time, switch SW3 is notconnect state, is laterally loaded by protection thus without from switch SW3
3 provide electric power.In circuit constitutes 9, by the lithium ion of short for the charging interval and repeatable charging
Battery 5 is energetically for the work by protection load 3, thus ensuring that be not used for ISG2 sending out
The period of electricity, load of electrical generation when vehicle travels can be reduced, fuel efficiency can be improved.Additionally,
Switch SW2 can also be connection status.
It is to be the " (charging of lithium ion battery during assist control at vehicle-state that circuit constitutes 10
When capacity is low) " formed.Constitute in 10 at this circuit, switch SW1, SW2, SW3,
SW4 is controlled as notconnect state, connection status, connection status, notconnect state respectively.
Vehicle-state now is the execution assist control when the charged state of lithium ion battery 5 is low
State, therefore in circuit constitutes 10, by switch SW3 is set to connection status, will open
Close SW4 and be set to notconnect state, thus as shown in Figure 4 from lead battery 4 to by protection load 3
Electric power is provided.It addition, by switch SW2 is set to connection status, thus from lithium-ion electric
Pond 5 provides electric power to ISG2.It addition, by switch SW1 is set to notconnect state, from
And make lead battery 4 disconnect with ISG2.So, in circuit constitutes 10, connect ISG2 and lithium
Circuit and the connection of ion battery 5 are separate by the circuit of protection load 3 and lead battery 4
Ground is formed.Thus, in circuit constitutes 10, by the lithium of short for the charging interval and repeatable charging
Ion battery 5, energetically for the driving of ISG2, therefore can perform assist control with altofrequency.
It addition, can make to be protected load 3 stable from lead battery 4 to by protection load 3 offer electric power
Ground work.Additionally, in the diagram, during switch SW1～SW4 Guan Bi, represent connection status,
Switch SW1～SW4 represents notconnect state when disconnecting.
It is to be the " (charging of lithium ion battery during assist control at vehicle-state that circuit constitutes 11
During capacity height) " formed.Constitute in 11 at this circuit, switch SW1, SW2, SW3,
SW4 is controlled as notconnect state, connection status, notconnect state, connection status respectively.
The shape of assist control is performed when vehicle-state now is the charged state height of lithium ion battery 5
State.In circuit constitutes 11, as it is shown in figure 5, by switch SW3 is set to disconnected shape
State, is set to connection status by switch SW4, thus from lithium ion battery 5 to by protection load 3
Electric power is provided, and by switch SW2 is set to connection status, thus from lithium ion battery
5 also provide electric power to ISG2.It addition, switch SW1 is set to notconnect state, by lead electricity
Pond 4 disconnects with ISG2.In circuit constitutes 11, by short for the charging interval and repeatable charging
Lithium ion battery 5, energetically for the driving of ISG2, therefore can perform auxiliary control with altofrequency
System.It addition, can make to be protected negative from lithium ion battery 5 to by protection load 3 offer electric power
Carry 3 stably to work.Additionally, in Figure 5, connection is represented during switch SW1～SW4 Guan Bi
State, switch SW1～SW4 represents notconnect state when disconnecting.
So, in circuit constitutes 10,11, when performing assist control, only with from filling
The electricity time is short and driven by power ISG2 of the lithium ion battery 5 of repeatable charging, thus suppresses
The reduction of the charging capacity of lead battery.
It addition, in circuit constitutes 10,11, when performing assist control, according to lithium ion
The charged state of battery 5, is thus independent of to by protection load 3 offer electric power from lead battery 4
Make to the charged state of lithium ion battery 5 to be protected load 3 stably to work.
As it appears from the above, in the automotive power supply system of present embodiment, circuit constitute 1～
11 is all that either one in switch SW3 or switch SW4 is controlled as connection status, therefore
Can make to be protected load 3 stably to work.
The action effect of the automotive power supply system of present embodiment is described.
The automotive power supply system of present embodiment has: switch SW1, it forms lead battery
The connection status of 4 and ISG2 or notconnect state；Switch SW3, it forms lead battery 4
With connection status or the notconnect state being loaded 3 by protection；Switch SW4, it forms lithium
Ion battery 5 and by protection load 3 connection status or notconnect state；And
ECU10, its control switch SW1, switch SW3 and switch SW4 connection status or
Notconnect state.
Further, ECU10 in the case of controlling assisting vehicle travel by the driving of ISG2,
Control to be notconnect state by switch SW1, when either one in switch SW3 and switch SW4
When being connection status, it is notconnect state by the opposing party's on-off control.
Thus, when carrying out assist control, i.e. when ISG2 assisting vehicle travel, lead electricity
Pond 4 disconnects with ISG2, only provides electric power from lithium ion battery 5 to ISG2, therefore can suppress lead
The reduction of the charging capacity of battery 4, the deterioration of suppression fuel efficiency.It addition, can be from lead electricity
Either direction in pond 4 or lithium ion battery 5 is protected load 3 offer electric power.Therefore,
Electric power is provided with being independent of the charged state of lithium ion battery 5 to by protection load 3.Its knot
Fruit is, can suppress the deterioration of fuel efficiency and make to be protected load 3 stably to work.Change sentence
Talking about, the automotive power supply system of present embodiment possesses switch SW3 and switch SW4, because of
This carries out supplying to by the electric power of protection load 3 from lead battery 4 when by ISG2 auxiliary travelling
Should, the big electric power of lithium ion battery 5 thus can be used to implement by the auxiliary of ISG2.
Additionally, in the automotive power supply system of present embodiment, constitute i.e. as long as following
Can: when ISG2 assisting vehicle travel, at least lead battery 4 disconnects with ISG2, can be only from lithium
Ion battery 5 provides electric power, arbitrary from lead battery 4 or lithium ion battery 5 to ISG2
Load 3 offer electric power is protected in direction.That is, the present invention can also be lithium ion battery 5 He
The composition that ISG2 connects all the time.
It addition, in the automotive power supply system of present embodiment, driving by ISG2
In the case of the dynamic traveling controlling auxiliary vehicle 1, when the charging capacity of lithium ion battery 5 is less than
During the charging capacity specified, ECU10 will switch SW3 and control to be connection status, will switch
SW4 controls as notconnect state.
Thus, when the charged state of lithium ion battery 5 is low, can be from lead battery 4 to being protected
Load 3 offer electric power, therefore can make to be protected load 3 stably to work.In other words, originally
The automotive power supply system of embodiment possess switch SW3 and switch SW4, therefore when lithium from
During the charged state height of sub-battery 5, can be from lithium ion battery 5 to by protection load 3 offer electricity
Power, therefore can apply flexibly the electric power of lithium ion battery 5 effectively.
It addition, in the automotive power supply system of present embodiment, vehicle 1 has in regulation
Condition set up in the case of automatically make the function that electromotor 7 stops and restarting,
ECU10 makes electromotor 7 in the case of halted state restarts, and is controlled by switch SW1
It is made as connection status, controls to be notconnect state by switch SW3, by switch SW4 control be
Connection status.
Thus, when electromotor 7 restarts, provide electric power from lead battery 4 to ISG2,
From lithium ion battery 5 to by protection load 3 offer electric power, therefore can make to be protected load 3 steady
Surely work.In other words, the automotive power supply system of present embodiment is at electromotor 7
Restart middle moment require more than lithium ion battery 5 allow discharge capacity electric power, pass through
Control switch SW1 and SW3, the circuit including ISG2 and lead battery 4 can be made with include lithium from
Sub-battery 5 and the circuit being protected load 3 are independent so that carrying out electricity from lead battery 4 to ISG2
Power supply, therefore can without lithium ion battery 5 and by protection load 3 between DCDC is set
Transducer.
It addition, in the automotive power supply system of present embodiment, lithium ion battery 5 is to fill
The time is shorter than lead battery 4 and rechargeable batteries for electricity.
Thus, 2 kinds of batteries that charge characteristic is different automotive power supply system is constituted, therefore
Efficient charge and discharge control can be realized in automotive power supply system.And, present embodiment
Automotive power supply system the position of ISG2 is arranged in than lead battery 4 by lithium ion battery 5
Side.Thus, only lithium ion battery 5 high for energy regenerating performance can be made ISG2 as electric power
Traction.
Although disclosing embodiments of the present invention, it is understood that those skilled in the art can
Apply change without departing from the scope of the invention.It is intended to all of this amendment
It is contained in claim with equivalent.
Claims (5)
1. an automotive power supply system, has:
Motor, it generates electricity when vehicle travels, and assists the traveling of above-mentioned vehicle；
Electric loading, it needs stable supply of electric power in the traveling of above-mentioned vehicle；
1st battery, it is connected with above-mentioned motor and above-mentioned electric loading and to above-mentioned electronic
Machine and above-mentioned electric loading provide electric power；
2nd battery, they are different from above-mentioned 1st battery, with above-mentioned motor and above-mentioned electric loading
Connect and provide electric power to above-mentioned motor and above-mentioned electric loading,
Above-mentioned automotive power supply system is characterised by having:
1st switch, it forms above-mentioned 1st battery and the connection status of above-mentioned motor or non-
Connection status；
2nd switch, it forms above-mentioned 1st battery and the connection status of above-mentioned electric loading or non-
Connection status；
3rd switch, it forms above-mentioned 2nd battery and the connection status of above-mentioned electric loading or non-
Connection status；And
Control portion, it controls above-mentioned 1st switch, above-mentioned 2nd switch and above-mentioned 3rd switch
Connection status or notconnect state,
Above-mentioned control portion is controlling to assist above-mentioned vehicle to travel by the driving of above-mentioned motor
In the case of, be notconnect state by above-mentioned 1st on-off control, above-mentioned 2nd switch and on
State either one in the 3rd switch when being connection status, above-mentioned 2nd switch and the above-mentioned 3rd are opened
The opposing party's on-off control in the Central Shanxi Plain is notconnect state.
Automotive power supply system the most according to claim 1, wherein,
Above-mentioned control portion is assisting the row of above-mentioned vehicle by the control that drives of above-mentioned motor
In the case of sailing, when the charging capacity of above-mentioned 2nd battery is less than the charging capacity specified,
It is connection status by above-mentioned 2nd on-off control, is disconnected shape by above-mentioned 3rd on-off control
State.
3. according to the automotive power supply system described in claim 1 or claim 2, wherein,
Above-mentioned vehicle has automatically makes electromotor stop in the case of the condition of regulation is set up
The function stopped and restart,
Above-mentioned control portion at above-mentioned electromotor in the case of halted state restarts, above-mentioned
1st on-off control is connection status, is notconnect state by above-mentioned 2nd on-off control, by upper
Stating the 3rd on-off control is connection status.
4. according to the automotive power supply system described in claim 1 or claim 2, wherein,
Above-mentioned 2nd battery is that a kind of charging interval is shorter than above-mentioned 1st battery and repeatable fill
The battery of electricity.
Automotive power supply system the most according to claim 3, wherein,
Above-mentioned 2nd battery is that a kind of charging interval is shorter than above-mentioned 1st battery and repeatable fill
The battery of electricity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2015-083130 | 2015-04-15 | ||
| JP2015083130A JP6582509B2 (en) | 2015-04-15 | 2015-04-15 | Vehicle power supply system |
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| CN106043176B CN106043176B (en) | 2018-11-06 |
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| JP (1) | JP6582509B2 (en) |
| CN (1) | CN106043176B (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920548A (en) * | 2019-11-20 | 2020-03-27 | 北京北汽德奔汽车技术中心有限公司 | Vehicle power supply control method, controller, system and vehicle |
| CN110979221A (en) * | 2019-12-26 | 2020-04-10 | 长城汽车股份有限公司 | Power supply control method and device for vehicle and vehicle |
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|---|---|---|---|---|
| JP2018103747A (en) * | 2016-12-26 | 2018-07-05 | スズキ株式会社 | Hybrid vehicle |
| JP2018103741A (en) * | 2016-12-26 | 2018-07-05 | スズキ株式会社 | Hybrid vehicle |
| JP6855785B2 (en) * | 2016-12-26 | 2021-04-07 | スズキ株式会社 | Hybrid vehicle |
| JP6784193B2 (en) * | 2017-02-28 | 2020-11-11 | 株式会社デンソー | Battery pack |
| JP2019006263A (en) * | 2017-06-26 | 2019-01-17 | 株式会社Ｓｕｂａｒｕ | Vehicle control apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106043176B (en) | 2018-11-06 |
| DE102016205999A1 (en) | 2016-11-17 |
| JP6582509B2 (en) | 2019-10-02 |
| JP2016207269A (en) | 2016-12-08 |
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