CN109070819A - Power control - Google Patents
Power control Download PDFInfo
- Publication number
- CN109070819A CN109070819A CN201780026020.8A CN201780026020A CN109070819A CN 109070819 A CN109070819 A CN 109070819A CN 201780026020 A CN201780026020 A CN 201780026020A CN 109070819 A CN109070819 A CN 109070819A
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- CN
- China
- Prior art keywords
- battery
- state
- switch portion
- power
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- 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
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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
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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
-
- 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
- H02J7/16—Regulation of the charging current or voltage by variation of field
Abstract
Power control (40) is applied to system, the system comprises: the first battery (11)；Second battery (12)；First switch portion (SW1), the first switch portion (SW1) are set to the connection path (LD) for being electrically connected the first battery and the second battery；Generator (10), the generator (10) have the output section (10c) for being electrically connected in connection path, more leaning on the second battery side than first switch portion, export generation power from output section；And second switch portion (SW2), the second switch portion (SW2) are set in connection path, more lean on the second battery side than the tie point (N) with output section.Power control includes: judging part, and the judging part judges whether the second battery is in over-discharge state；And prohibition unit, the prohibition unit forbid first switch portion and this two side of second switch portion in an ON state to be judged as that the second battery is in over-discharge state as condition by judging part.
Description
Related application is quoted
The application based on Japanese patent application No. 2016-091347 application filed on April 28th, 2016,
This quotes its contents.
Technical field
The present invention relates to a kind of power controls for being installed in vehicle etc..
Background technique
In the past, by following patent documents 1 it is found that a kind of power-supply system known, including lead storage battery i.e. the first battery, lithium
Ion accumulator i.e. the second battery and semiconductor switch.Semiconductor switch is set to the link road for being electrically connected above-mentioned battery
Diameter.Power-supply system further includes generator, and above-mentioned generator is electrically connected in connection path, more leans on the first electric power storage than semiconductor switch
Pond side.
Existing technical literature
Patent document
Patent document 1: No. 5234052 bulletin of Japanese Patent Laid
Summary of the invention
In the power-supply system documented by above patent document 1, since long-time does not use the second battery, deposit
The case where causing the second battery to become over-discharge state from self-discharge of the second battery etc..In the past, it sent out in the car
In the case where the overdischarge problem for having given birth to above-mentioned battery, if rescue can then be removed from vehicle or be passed through to lead storage battery
The reinforcement etc. of vehicle is charged to start engine.However, in the case where lithium-ions battery, due to as including above-mentioned storage
Battery and the component of peripheral circuits, that is, battery pack installing, therefore, have no idea to charge to battery from outside, and can only be more
Change battery assembly.
In general, holding voltage to decline if the charge volume of battery is reduced.Therefore, the second battery of over-discharge state
End voltage is in low state, the shape of the end voltage decline in end two battery of voltage regulation relative to the first battery much
State.In the above-described state, if semiconductor switch is switched to on-state from off-state, there may be overcurrent from first
The case where battery is flowed to the second battery.In these cases, in the power supply system, the position that overcurrent flows through it is reliable
Property can reduce.
It is a primary object of the present invention to improve a kind of power control, it is applied to store including the first battery and second
In the system of battery, it is avoided that overcurrent is flowed from the first battery to the second battery.
Hereinafter, to for solving above-mentioned technical problem method and its function and effect be illustrated.
First invention is applied to system, and above system includes: the first battery；Second battery；First switch portion, on
It states first switch portion and is set to the connection path for being electrically connected above-mentioned first battery and above-mentioned second battery, connected by becoming
Any state in state and off-state is conducted and is cut off to be switched to；Generator, above-mentioned generator, which has, to be electrically connected
Be connected in above-mentioned connection path, more lean on the output section of above-mentioned second battery side than above-mentioned first switch portion, by generation power from
Above-mentioned output section output；And second switch portion, above-mentioned second switch portion is set in above-mentioned connection path, than with above-mentioned output
The tie point in portion more leans on above-mentioned second battery side, is cut by becoming any state in on-state and off-state
It is changed to and conducts and cut off.First invention includes: judging part, and whether above-mentioned judging part is in over-discharge to above-mentioned second battery
Electricity condition is judged；And prohibition unit, above-mentioned prohibition unit is to be judged as that above-mentioned second battery is in by above-mentioned judging part
Over-discharge state is condition, forbids above-mentioned first switch portion and this two side of above-mentioned second switch portion all in on-state.
In the present invention as stated above, to be judged as that the second battery is in over-discharge state as condition by judging part, pass through taboo
Stop forbids first switch portion and this two side of second switch portion in an ON state.Therefore, the second battery and first is forbidden to store
Battery electrical connection, is avoided that overcurrent is flowed from the first battery to the second battery.Whereby, it is avoided that the reliability drop of system
It is low.
In addition, in the present invention as stated above, moreover it is possible under conditions of being judged as that the second battery is in over-discharge state, make first
Switch portion in an ON state and is in an off state second switch portion.Whereby, the second battery can be stored with including first
The electrical system of battery and generator is electrically cut off, so as to maintain in electrical system included by system, normal electrical system
The movement and use of system.
Second invention further includes charging control section, and above-mentioned charging control section is forbidding above-mentioned first by above-mentioned prohibition unit
Switch portion and this two side of above-mentioned second switch portion in an ON state in the case where, disconnect shape being in above-mentioned first switch portion
State and make above-mentioned second switch portion in an ON state in the state of, using above-mentioned generator generation power to it is above-mentioned second store
Battery charges.
In the system that application has foregoing invention, in addition to first switch portion, in connection path, than the output with generator
The tie point in portion more leans on the second battery side to be provided with second switch portion.Therefore, in the present invention as stated above, forbid by prohibition unit
In the case where, be in an off state first switch portion and make second switch portion in an ON state in the state of, can utilize
The generation power of generator charges to the second battery.Whereby, it does not need to carry out will be deemed as the second of over-discharge state
The operation that battery is removed from system can be such that the charge volume of the second battery increases, so that the second battery be made to be in energy
The state reused.
In addition, in the system documented by above patent document 1, that is, existing system, in connection path, ratio first opened
Pass portion more leans on the first battery side to be electrically connected with generator.Therefore, in existing system, in the generation power using generator
In the case where charging to the second battery, need to make first switch portion in an ON state.But if by first switch portion
It is switched to on-state, then there is the case where the second battery flowing of the overcurrent from the first battery to over-discharge state.Cause
This, in the case where the second battery is in over-discharge state, is needed the second battery from system in existing system
The operation removed and be changed to the second new battery etc..
It further include electric loading in above system, above-mentioned electric loading is electrically connected to above-mentioned link road in third invention
Above-mentioned first battery side is more leaned in diameter, than above-mentioned first switch portion.
In the system that application has foregoing invention, including electric loading, above-mentioned electric loading is electrically connected in connection path, than the
One switch portion more leans on the first battery side.Therefore, even if in the charging for being judged as the second battery in over-discharge state
Cheng Zhong, in the case that first switch portion is in an off state, also can replace the second battery, generator, from the first battery to
Electric loading supplies electric power.Therefore, it can ensure that the power supply to electric loading and can charge to the second battery.
In the 4th invention, the output voltage of the above-mentioned output section of above-mentioned generator be can be adjusted, above-mentioned charging control
Portion processed is gradually increasing the output voltage of above-mentioned output section when above-mentioned second battery charges.
In the present invention as stated above, when the second battery charges, it is gradually increasing the output voltage of output section.This be in order to
In the case that second battery is in over-discharge state, the end voltage of the end voltage and the first battery because of the second battery is prevented
Difference, flow overcurrent from the output section of generator to the second battery.Here, just having been started to charge in the second battery
Afterwards, making the output voltage of the output section of generator reduces, to make the electricity of the electrical system comprising generator and the second battery
Pressure drop is low.Therefore, it is electrically connected in connection path in electric loading, in the structure of more leaning on the second battery side than first switch portion,
After the second battery just starts to charge, the voltage of the electrical system comprising generator and the second battery may be lower than energy
Ensure the minimum voltage of the movement of electric loading.
In this regard, in the present invention as stated above, electric loading is electrically connected in connection path, more leans on the first storage than first switch portion
Battery side.Therefore, after the second battery just charges, it is in an off state first switch portion, from the first battery to electricity
Load supplies electric power.Whereby, it is avoided that the voltage of supply to electric loading lower than above-mentioned minimum voltage.Therefore, in the second battery
When charging, the movement of electric loading can ensure that.
In the 5th invention, above-mentioned generator has Generation Control portion, and above-mentioned Generation Control portion is powered, to be based on
The output voltage instruction value of output section issue from above-mentioned charging control section, above-mentioned carries out the output voltage of above-mentioned output section
It adjusts, is supplied electric power from above-mentioned first battery to above-mentioned Generation Control portion.
In order to avoid overcurrent is flowed from the output section of generator to the second battery, in the charging of the second battery, base
The output voltage of output section is gradually increasing in output voltage instruction value.Here, from the second battery and generator to power generation
In the structure that control unit supplies electric power, after the second battery just starts to charge, the electricity comprising generator and the second battery
The voltage of gas system may be lower than the minimum voltage for the movement that can ensure that Generation Control portion.In this case, it is possible to can not
The output voltage of output section is adjusted.In order to cope with the above problem, it is also considered that improve the output voltage of output section.But
It is that in these cases, might have overcurrent and flowed from the output section of generator to the second battery.
In this regard, in the present invention as stated above, it is supplied electric power from the first battery to Generation Control portion.Therefore, it is avoided that confession
It is lower than above-mentioned minimum voltage to the voltage to Generation Control portion.Whereby, it can ensure that the movement in Generation Control portion, it can be suitably to hair
The output voltage of the output section of motor is adjusted.
In the 6th invention, in above system, including engine, above-mentioned generator from above-mentioned engine by supplying
Power and generate electricity, above-mentioned generator has Generation Control portion, and above-mentioned Generation Control portion is powered, thus based on from above-mentioned
The output voltage instruction value of output section that charging control section issues, above-mentioned, is adjusted the output voltage of above-mentioned output section,
Under above-mentioned engine-driven state, supplied electric power from above-mentioned generator to above-mentioned Generation Control portion.
In the present invention as stated above, under engine-driven state, power generation control can be provided by the generation power of generator
The electric power in portion processed.
In the 7th invention, above-mentioned charging control section is lower than suitable model in the charge volume for being judged as above-mentioned first battery
In the case where the lower limit value enclosed, before charging to above-mentioned second battery, connected being in above-mentioned first switch portion
State and in the state of being in an off state above-mentioned second switch portion, by the generation power of above-mentioned generator to above-mentioned first
Battery charges.
In the charging of the second battery, if the charge volume of the first battery is inadequate, supplied from the first battery to electric loading
Supplying electric power for giving may be insufficient.In this regard, in the present invention as stated above, in the charge volume for being judged as the first battery lower than conjunction
In the case where the lower limit value of suitable range, before charging to the second battery, make first switch portion in an ON state
And in the state of being in an off state second switch portion, charged by the generation power of generator to the first battery.
Then, then, charge to the second battery.Therefore, it is avoided that in the charging of the second battery, from the first battery to electricity
Load supply supplies electric power deficiency.
In the 8th invention, above-mentioned charging control section is above-mentioned in the charging process for being judged as above-mentioned second battery
In the case where lower limit value of the charge volume of first battery lower than OK range, above-mentioned first switch portion is being switched to connection shape
State and in the state that above-mentioned second switch portion is switched to off-state, by the generation power of above-mentioned generator to above-mentioned first
Battery charges.
The longer feelings during the energizing power from the first battery to electric loading is larger or the charging of the second battery
Under condition, during charging to the second battery, the charge volume of the first battery be may be insufficient, to store from first
Battery can be insufficient to the energizing power of electric loading.In this regard, in the present invention as stated above, in the charging for being judged as the second battery
Cheng Zhong in the case where the lower limit value of the charge volume of the first battery lower than OK range, becomes for being switched in first switch portion and connects
Logical state and the state that second switch portion is switched to off-state.Then, in the above-described state, pass through the power generation electricity of generator
Power charges to the first battery.Therefore, it is avoided that in the charging process of the second battery, from the first battery to electric loading
Supply supplies electric power deficiency.
Detailed description of the invention
Referring to attached drawing and description in detailed below, above-mentioned purpose that can be more clearly of the invention, other purposes, feature and excellent
Point.Attached drawing is as described below.
Fig. 1 is the overall structure figure of Vehicular power system.
Fig. 2 is flow chart the step of indicating charging process.
Fig. 3 is the timing diagram for indicating the charging process when charge volume of lead storage battery is enough.
Fig. 4 is the timing diagram for indicating the charging process when charge volume of lead storage battery is not enough.
Specific embodiment
Hereinafter, being based on attached drawing, the embodiment that the present invention is embodied is illustrated.It is installed with the electricity of present embodiment
The vehicle of source control device is travelled engine as driving source, has the function of so-called idle stop.
As shown in Figure 1, Vehicular power system includes rotating electric machine 10, as the lead storage battery 11 of the first battery, conduct
Lithium-ions battery 12, starter 13 and the various electric loadings 14 of second battery.Lead storage battery 11 is well-known general
Battery.On the other hand, the output density of lithium-ions battery 12 and energy density are higher than lead storage battery 11, and are for frequency
The high high-performance battery of numerous charging and discharging patience.In the present embodiment, the capacitance of storage of lead storage battery 11 compares lithium ion
The capacitance of storage of battery 12 is big.In addition, in the present embodiment, the voltage rating and lithium-ions battery 12 of lead storage battery 11
Voltage rating it is same or about.
Via connection path LD, the anode of lithium-ions battery 12 is connect with the anode of lead storage battery 11.Lead storage battery 11
It is grounded with the respective cathode of lithium-ions battery 12.
Rotating electric machine 10 has Power Generation Section 10a, Generation Control portion 10b and exports the output of the generation power of Power Generation Section 10a
Portion 10c.Power Generation Section 10a contains stator, the stator coil for being wound in stator, rotor and the rotor coil for being wound in rotor.Rotor
Rotary shaft linked by the output shaft 20a of belt etc. and engine 20.In the present embodiment, rotating electric machine 10 is as utilization
The rotation of output shaft 20a, axle are worked come the generator to generate electricity.
Utilize the power supplied from output shaft 20a, rotor rotation.In the 10a of Power Generation Section, under the situation of rotor rotation,
According to the exciting current for flowing through rotor coil, induction generates alternating current in the stator coils, and not shown rectifier turns
It is changed to DC current.In addition, the exciting current for flowing through rotor coil is adjusted by Generation Control portion 10b, thus will hair
The DC voltage regulation of electricity is output voltage instruction value Vref.That is, Generation Control portion 10b will be exported from output section 10c
Generation power control at output voltage instruction value Verf.Electric power is supplied from lead storage battery 11 to Generation Control portion 10b.
Power-supply system includes first switch portion SW1 and second switch portion SW2.In the present embodiment, first switch portion SW1
It is by becoming the free position in on-state and off-state, to be switched on and off to electricity set on connection path LD
The semiconductor switch switched over.In the present embodiment, a pair of of N-type channel that first switch portion SW1 is connected to each other by source electrode
MOSFET (Metal Oxide Semiconductor Field Effect Transistor: metal oxide semiconductcor field effect
Answer transistor) it constitutes.
In connection path LD, 12 side of lithium-ions battery is more being leaned on than first switch portion SW1, is being electrically connected with output section
10c.In connection path LD, 12 side of lithium-ions battery is more being leaned on than the tie point N with output section 10c, is being provided with semiconductor
Switch is second switch portion SW2.In the present embodiment, a pair of of N-type channel that second switch portion SW2 is connected to each other by source electrode
MOSFET is constituted.
Starter 13 is connected in parallel with lead storage battery 11.Starter 13 by the electric power that is supplied from lead storage battery 11, thus
Carry out the crank rotation for the output shaft 20a that initial rotation is applied to engine 20.
Electric loading 14 is connected in parallel with lead storage battery 11.It include that constant voltage requires load in electric loading 14, which wants
The voltage constant of asking load requirement to supply electric power at most is changed i.e. stable within the specified scope.As constant voltage
It is required that the concrete example of load, can enumerate the Air Blast fan etc. of navigation device, head lamp and air-conditioning device.
Power-supply system includes: the first voltage test section 30 detected to the end voltage of lead storage battery 11；And convection current
Cross the first current detecting part 31 that the charge discharge electric current of lead storage battery 11 is detected.Power-supply system includes: to store to lithium ion
The second voltage test section 32 that the end voltage of battery 12 is detected；And to the charging and discharging electricity for flowing through lithium-ions battery 12
The second current detecting part 33 that stream is detected.
The detected value of each test section is input to the control device 40 for being provided to power-supply system.Control device 40 carries out following
Control: the starting control of engine 20；The Generation Control that output voltage instruction value Vref is exported to Generation Control portion 10b；With
And it is adjusted such that the charge rate (SOC) of lead storage battery 11 and lithium-ions battery 12 is in the conjunction for the electric discharge that will not overcharge
The charging and discharging control of suitable range.In addition, the OK range of lead storage battery 11 is set to the prescribed limit from the value at center, tool
Body, such as it is set as 90% ± 2%.In addition, the OK range of lithium-ions battery 12 be for example specifically set as 30~
80%.
In addition, in the starting control of engine 20, in addition to include using the connection operation of the ignition switch of vehicle user as
It further include restarting for the engine 20 controlled by idle stop other than input, engine 20 first starting control
Control.It is well known that idle stop control is following control: making engine 20 according to the establishment of the automatic stop condition of regulation
It is automatically stopped, in the state that this is automatically stopped, restarts engine 20 according to the establishment for restarting condition of regulation.
In addition, in fact, waiting the constituent element of onboard systems corresponding with engine 20 respectively and control device being respectively set.
It in the present embodiment, is not emphasis since control device is respectively set, for ease of description, by these control devices
It is illustrated as single control device 40.
Charging process when then, to the starting of the engine 20 executed by control device 40 is illustrated.
In the power supply system, the case where there are vehicles to place for a long time, and 12 long-time of lithium-ions battery does not use.?
In this case, it is supplied due to the self discharge of lithium-ions battery 12, to the equipment being electrically connected with lithium-ions battery 12 dark
Electric current, there are the charge rates of lithium-ions battery 12 to be in the lower limit value close to its OK range or the state lower than its lower limit value
I.e. over-discharge state the case where.The end voltage of lithium-ions battery 12 in over-discharge state is in low state, it is possible to
Become the end voltage relative to lead storage battery 11, the big state of the end voltage decline degree of lithium-ions battery 12.In above-mentioned shape
Under state, if first switch portion SW1 is switched to on-state from off-state, might have overcurrent from lead storage battery 11 to
Lithium-ions battery 12 flows.In these cases, connection path LD, lead storage battery 11 and lithium-ions battery 12 etc. is reliable
Property may reduce.
To solve the above problems, expecting that the lithium-ions battery 12 for becoming over-discharge state is changed to new lithium ion to be stored
The enough old lithium-ions batteries of battery, charge volume.In addition, it is also contemplated that the lithium-ions battery that over-discharge state will be become
12 remove from vehicle, carry out charging to the lithium-ions battery 12 removed by charging equipment and are installed in vehicle again.But
In these cases, it may occur that the renewal cost for the working hour of replacement or vehicle driver burden is spent to will increase so very much
The problem of.
Therefore, in the present embodiment, even if being also not required in the case where lithium-ions battery 12 becomes over-discharge state
Lithium-ions battery 12 is removed from vehicle, just can be carried out makes lithium-ions battery 12 be in filling for the state that can be reused
Electric treatment.
Fig. 2 indicates the step of above-mentioned charging process.Above-mentioned processing is for example held with specified period repeatedly by control device 40
Row.
In above-mentioned a series of processing, firstly, in step slo, determining whether ignition switch is in connection.
In the case where being judged as connection in step slo, step S12 is advanced to, whether is 0 to judge to the value of judgement symbol F.Sentence
The initial value of disconnected mark F is set as 0.
In the case where being judged as that the value of judgement symbol F is 0 in step s 12, step S14 is advanced to, first switch portion is made
SW1 is in an ON state and second switch portion SW2 is in an off state.
Then, in step s 16, judge whether the starting of engine 20 is completed.In addition, as to engine
Whether 20 starting completes the method judged, such as can use following methods: when be judged as the revolving speed of output shaft 20a for
When more than egulation rotating speed, it is judged as that starting has been completed.In addition, can utilize if the starting of engine 20 is completed by engine
The power of 20 output shaft 20a supply, carries out the power generation of rotating electric machine 10.In the present embodiment, it is being driven in engine 20
In the state of dynamic, the generation power of rotating electric machine 10 is fed directly to Generation Control portion 10b.Whereby, rotating electric machine can be passed through
10 generation power provides the electric power that should be supplied to Generation Control portion 10b.
It is judged as in the completed situation of the starting of engine 20 in step s 16, is judged as judgement mark in step s 12
In the case that the value of will F is 1, step S18 is advanced to.In step S18, whether overdischarge shape is in lithium-ions battery 12
State is judged.In the present embodiment, at the end for being judged as the lithium-ions battery 12 detected by second voltage test section 32
In the case that voltage VLi is smaller than the first judgment value Vth1, it is judged as that lithium-ions battery 12 is in over-discharge state.In this implementation
In mode, the first judgment value Vth1 is set to the lower limit value of the OK range of the end voltage of lithium-ions battery 12.In addition,
In present embodiment, the processing of step S18 is equivalent to judging part.
In addition, when initially carrying out the processing of step S18, making second switch portion SW2 after processing shown in Fig. 2 starts
It is in an off state, cuts off lithium-ions battery 12 and tie point N.At this point, in the opening for being judged as lithium-ions battery 12
End voltage is that also may determine that in specified value (such as 10V) situation below and be in over-discharge state for lithium-ions battery 12.
It is judged as in the case where be not at over-discharge state in step S18, advances to step S20, allows first switch
Portion SW1 and second switch portion SW2 simultaneously in an ON state.It is in first switch portion SW1 with second switch portion SW2 and connects shape
In the case where state, when rotating electric machine 10 generates electricity, generation power is by lead storage battery 11, lithium-ions battery 12 and electric loading
14 supplies.In the after treatment of step S20, step S22 is advanced to, the value of judgement symbol F is set as 1.
On the other hand, in the case where being judged as in step S18 in over-discharge state, step S24 is advanced to, forbids
One switch portion SW1 and second switch portion SW2 simultaneously in an ON state.In addition, in the present embodiment, the processing of step S24
It is equivalent to prohibition unit.
Then, in step S26, judge whether lead storage battery 11 is in deterioration.In addition, judging in step 26
For in the case where the deterioration, it may be desirable to, it carries out by lighting trouble lamp etc., the information deteriorated is notified to use
The processing at family.
In the case where being judged to not deteriorating in step S26, step S28 is advanced to, to the charge volume of lead storage battery 11
Whether judged enough.In the present embodiment, it is being judged as the lead storage battery 11 detected by first voltage test section 30
In the case where holding voltage VPb smaller than the second judgment value Vth2, it is judged as that the charge volume of lead storage battery 11 is inadequate.In present embodiment
In, the second judgment value Vth2 is set to the lower limit value of the OK range of the end voltage of lead storage battery 11.In addition, lead storage battery 11
Above-mentioned lower limit value be, for example, 12.5V.
In addition, there is also methods described below as the enough methods of charge volume for being judged as lead storage battery 11.Specifically
For, for example, there are following methods: being judged as that end voltage when charging with rated current (such as 5A) to lead storage battery 11 is big
In the case where being equal to the third judgment value Vth3 (such as 14V) bigger than the second judgment value Vth2, it is judged as lead storage battery 11
Charge volume is enough.In addition, for example, there is also following methods: be judged as it is when being charged with assigned voltage (such as 14V),
Towards lead storage battery 11 charging current be less than or equal to specified value (such as 5A) in the case where, be judged as the charge volume of lead storage battery 11
Enough.
It is judged as in the enough situations of the charge volume of lead storage battery 11 in step S28, advances to step S30, make first
Switch portion SW1 is in an off state and makes second switch portion SW2 in an ON state.
Then, in step s 32, lithium ion is stored by the generation power exported from the output section 10c of rotating electric machine 10
Battery 12 charges.In the present embodiment, it when lithium-ions battery 12 charges, carries out gradually increasing output voltage instruction
Value Vref is until output voltage instruction value Vref reaches the processing of specified value.Above-mentioned processing is in order to avoid overcurrent is from output section
The processing that 10c is flowed through to lithium-ions battery 12.In addition, above-mentioned specified value is for example set as storing than lithium-ions battery 12 and lead
The high value of the voltage rating of battery 11.In the after treatment of step S32, then, in step S34, by the value of judgement symbol F
It is set as 1.
On the other hand, in the case where being judged as that the charge volume of lead storage battery 11 is inadequate in step S28, step is advanced to
S36 makes first switch portion SW1 in an ON state and is in an off state second switch portion SW2.Then, in step S38
In, it is charged by the generation power exported from the output section 10c of rotating electric machine 10 to lead storage battery 11.In step s 40,
Judge whether the end voltage VPb of lead storage battery 11 is more than or equal to third judgment value Vth3.It is in step s 40 to sentence certainly
In the case where disconnected, step S42 is advanced to, the value of judgement symbol F is set as 0.
Then, using Fig. 3 and Fig. 4, above-mentioned charging process when starting to engine 20 is further illustrated.
Firstly, using Fig. 3, filling in the enough situations of charge volume of the lead storage battery 11 when being completed to the starting of engine 20
Electric treatment is illustrated.Here, (a) of Fig. 3 indicates the passage of the mode of operation of ignition switch, (b) of Fig. 3 indicates starter 13
Action state passage, (c) of Fig. 3 indicates the passage of the action state of engine 20.(d), (e) of Fig. 3 indicates that first opens
(f) of the passage of the mode of operation of pass portion SW1, second switch portion SW2, Fig. 3 indicates the lithium detected by second voltage test section 32
The passage of the end voltage VLi of ion accumulator 12.
In illustrated example, at the t1 moment, ignition switch is connected, so that first switch portion SW1 is switched to from off-state
On-state.Then, initial rotation is applied to the output shaft 20a of engine 20 by starter 13, in addition, by starting to start
The Combustion System of machine 20, to be judged as that the starting of engine 20 has been completed at the t2 moment.In addition, in the present embodiment,
It is set as lead storage battery 11 when engine 20 starts, charge capacity needed for there is driving starter 13.
Then, according to being judged as that lithium-ions battery 12 is in over-discharge state, forbid after the completion of engine 20 starts,
First switch portion SW1 and second switch portion SW2 this two side in an ON state before, make first switch portion SW1 and second switch
Portion SW2 this two side is in an ON state.
Then, at the t3 moment, first switch portion SW1 is switched to off-state from on-state, by second switch portion SW2
On-state is switched to from off-state.Then, using the generation power of rotating electric machine 10 start to lithium-ions battery 12 into
Row charging.By the charging of lithium-ions battery 12, at the t4 moment, it is judged as that the end voltage VLi of lithium-ions battery 12 reaches
First judgment value Vth1.Therefore, be judged as lithium-ions battery 12 over-discharge state eliminate, allow first switch portion SW1 and
Second switch portion SW2 this two side is in an ON state.Whereby, first switch portion SW1 is switched to on-state.
Then, using Fig. 4, to filling in the inadequate situation of charge volume for starting the lead storage battery 11 when completing of engine 20
Electric treatment is illustrated.In addition, (a) of Fig. 4~(e), (g) are corresponding with (a)~(f) of Fig. 3 before, (f) of Fig. 4 indicate by
The passage of the end voltage VPb for the lead storage battery 11 that first voltage test section 30 detects.In addition, in (f) of Fig. 4, by stator 13
Driving and make hold voltage VPb reduce etc. diagram omit.
In illustrated example, it is judged as that lithium-ions battery 12 is in over-discharge state after the t2 moment.Then, in lithium ion
Before battery 12 charges, at the t3 moment, start to charge to lead storage battery 11 using the generation power of rotating electric machine 10.It is logical
The charging for crossing lead storage battery 11 is judged as that the end voltage VPb of lead storage battery 11 reaches third judgment value Vth3 at the t4 moment.So
Afterwards, it is judged as that the charge volume of lead storage battery 11 is enough.Then, first switch portion SW1 is being switched to off-state and by second
Switch portion SW2 is switched in the state of on-state, is started using the generation power of rotating electric machine 10 to lithium-ions battery 12
It charges.Therefore, at the t5 moment, it is judged as that the over-discharge state of lithium-ions battery 12 is eliminated, allows first switch portion SW1
In an ON state with second switch portion SW2 this two side.Whereby, first switch portion SW1 is switched to on-state.
In addition, from lead storage battery 11 to the energizing power of electric loading 14 is larger or the charging phase of lithium-ions battery 12
Between in longer situation, during being charged by charging process to lithium-ions battery 12, the end of lead storage battery 11
Voltage VPb may be less than the second judgment value Vth2.Here, charging process according to Fig.2, at the place for passing through step S28
Reason is judged as that in the charging process of lithium-ions battery 12, the end voltage VPb of lead storage battery 11 is less than the second judgment value Vth2
In the case where, by the processing of step S36, first switch portion SW1 is switched to on-state and switches second switch portion SW2
For off-state.In addition, in the above-described state, by the generation power of rotating electric machine 10, charging to lead storage battery 11, so
Afterwards, it starts again at and charges to lithium-ions battery 12.Dimension is avoided that in the charging process of lithium-ions battery 12,
Deficiency is supplied electric power from lead storage battery 11 to electric loading 14.
Present embodiment according to the above description can obtain following technical effects.
In the case where being judged as that lithium-ions battery 12 is in over-discharge state, forbid first switch portion SW1 and second
This two side of switch portion SW2 is all in on-state.Therefore, it is avoided that overcurrent from lead storage battery 11 to being judged as over-discharge state
Lithium-ions battery 12 flow through.Whereby, it is avoided that the reliability of power-supply system reduces.
In the case where being judged as that lithium-ions battery 12 is in over-discharge state, it is in and disconnects in first switch portion SW1
State and second switch portion SW2 in an ON state in the state of, by the generation power of rotating electric machine 10 to lithium ion electric power storage
It charges in pond 12.The lithium-ions battery 12 that therefore, there is no need to will be deemed as being in over-discharge state is removed from vehicle
Operation the charge volume of lithium-ions battery 12 can be made to increase, make lithium-ions battery 12 in the state of being equipped on vehicle
Revert to the state that can be used.
In connection path LD, 11 side of lead storage battery is more being leaned on than first switch portion SW1, is being connected with electric loading 14.Therefore,
Even if first switch portion SW1, which is in, disconnects shape when being judged as that the lithium-ions battery 12 in over-discharge state is charged
In the case where state, electric power can also be supplied from lead storage battery 11 to electric loading 14.Therefore, it is avoided that the electricity supplied to electric loading 14
Pressure is less than the minimum voltage that can ensure that the movement of electric loading 14, and can be carried out the charging process of lithium-ions battery 12.
In addition, in the charging process of lithium-ions battery 12, the structure that gradually increases output voltage instruction value Vref
In, in connection path LD, 11 side of lead storage battery is more being leaned on than first switch portion SW1, is being connected with Generation Control portion 10b.Whereby,
It is avoided that the voltage supplied to Generation Control portion 10b is less than the minimum voltage that can ensure that the movement of Generation Control portion 10b.
(other embodiment)
In addition, the respective embodiments described above can also carry out following changing and implementing.
As the method whether judged in over-discharge state lithium-ions battery 12, it is not limited to above-mentioned
The method illustrated in embodiment.For example, it is also possible to be less than its OK range in the charge rate for being judged as lithium-ions battery 12
Lower limit value in the case where, be judged as that lithium-ions battery 12 is in over-discharge state.In addition, the charging of lithium-ions battery 12
Rate for example can also be based on the accumulated value of the charge discharge electric current of the lithium-ions battery 12 detected by the second current detecting part 33
To calculate.
In addition, as the method whether judged in over-discharge state lithium-ions battery 12, such as can also be with
Use the method judged based on the difference of the end voltage VPb of lead storage battery 11 and the end voltage VLi of lithium-ions battery 12.
Specifically, being less than in the difference that the end voltage VPb for being judged as lead storage battery 11 subtracts the end voltage VLi of lithium-ions battery 12
In the case where fixed value (> 0), it is judged as that lithium-ions battery 12 is in over-discharge state.
In addition, being not limited to as the method whether judged in over-discharge state lithium-ions battery 12
Use the detected values such as end voltage.For example, it is also possible to use following methods: being judged as power-supply system since upper once by using
By the time be more than or equal to the stipulated time in the case where, be judged as that lithium-ions battery 12 is in over-discharge state.
In the step S28 of Fig. 2, as the method whether charge rate to lead storage battery 11 is judged enough, and
It is not limited to the method illustrated in above embodiment.For example, it is also possible to small in the charge rate (SOC) for being judged as lead storage battery 11
In the case where the lower limit value of its OK range, it is judged as that the charge volume of lead storage battery 11 is inadequate.In addition, for example will be above-mentioned suitable
The lower limit value of range is set as 88% (=90%-2%).In addition, the charge rate of lead storage battery 11 for example can also be based on by the
The accumulated value of the charge discharge electric current of the lead storage battery 11 of one current detecting part 31 detection calculates.
The step S28 executed during the processing of the step S32 by Fig. 2 charges to lithium-ions battery 12
In, the whether enough threshold values of the charge volume for being used to judge lead storage battery 11 can be changed into the value other than the second judgment value Vth2.
Specifically, for example, can be changed into from the second judgment value Vth2 bigger and smaller than third judgment value Vth3 than the second judgment value Vth2
Value.
In the above-described embodiment, the first battery is set as lead storage battery 11, the second battery is set as lithium ion
Battery 12, however, it is not limited to this, the first battery and the second battery this two side can also be set to lead storage battery
Or lithium-ions battery etc., the battery that the first battery and the second battery this two side are set as to identical type.In addition, making
For the type of battery, it is also possible to the battery of the type other than lead storage battery and lithium-ions battery.
It is also possible in connection path LD, is more leaning on the side tie point N to be connected with electric loading than first switch portion SW1
Structure.Here, as the electric loading for being connected to the side tie point N, for example, following load: over-discharge state lithium from
Electric power can supply inadequate electric loading, the electric loading for not influencing vehicle driving, in over-discharge in the charging process of sub- battery 12
The electric loading etc. that can be failure to actuate in the charging process of the lithium-ions battery 12 of electricity condition.
It, can also be so that lithium ion electric power storage in the case where the lithium-ions battery 12 to over-discharge state charges
The charging current in pond 12 is less than or equal to the mode of rated current, is gradually increasing output voltage instruction value Vref.
As first switch portion SW1 and second switch portion SW2, it is not limited to which the semiconductor being made of MOSFET is opened
It closes, such as the semiconductor switch being made of thyristor, solid-state relay also can be used.
Although being described according to embodiment to the present invention, it should be understood that the present invention is not limited to above-mentioned realities
Apply example, structure.The present invention also includes various variations, the deformation in equivalency range.In addition to this, various groups
Conjunction, mode, further include only one element, the other combinations below of more than one or one, mode also belong to the present invention
Scope, thought range.
Claims (8)
1. a kind of power control (40), which is characterized in that
The power control (40) is applied to system, the system comprises:
First battery (11)；
Second battery (12)；
First switch portion (SW1), the first switch portion (SW1) are set to first battery and second battery electricity
The connection path (LD) of connection, by conducting in an ON state with any state in off-state to being switched to and
Cutting；
Generator (10), the generator (10), which has, to be electrically connected in the connection path, more leans on than the first switch portion
The output section (10c) of second battery side exports generation power from the output section；And second switch portion (SW2), institute
Second switch portion (SW2) is stated to be set in the connection path, more store by described second than the tie point (N) with the output section
The position of battery side, by conducting and cutting off to be switched to any state in off-state in an ON state,
The power control includes:
Judging part, the judging part judge whether second battery is in over-discharge state；And
Prohibition unit, the prohibition unit is to be judged as that second battery is in over-discharge state as item by the judging part
Part forbids the first switch portion and this two side of the second switch portion in an ON state.
2. power control as described in claim 1, which is characterized in that
It further include charging control section, the charging control section is forbidding the first switch portion and described by the prohibition unit
Two switch portions this two sides in an ON state in the case where, be in an off state the first switch portion and making described second
Switch portion in an ON state in the state of, charged using the generation power of the generator to second battery.
3. power control as claimed in claim 2, which is characterized in that
It in the system, further include electric loading (14), the electric loading (14) is electrically connected in the connection path, than described
The position of first battery side is more leaned in first switch portion.
4. power control as claimed in claim 3, which is characterized in that
The output voltage of the output section of the generator can be adjusted,
The charging control section is gradually increasing the output voltage of the output section when second battery charges.
5. power control as claimed in claim 4, which is characterized in that
The generator has Generation Control portion (10b), and the Generation Control portion (10b) is powered, thus based on filling from described
The output voltage instruction value of the output section that electric control portion issues, described, is adjusted the output voltage of the output section,
It is supplied electric power from first battery to the Generation Control portion.
6. power control as described in claim 4 or 5, which is characterized in that
In the system, including engine (20),
The generator is generated electricity by the power supplied from the engine,
The generator has Generation Control portion (10b), and the Generation Control portion (10b) is powered, thus based on filling from described
The output voltage instruction value of the output section that electric control portion issues, described, is adjusted the output voltage of the output section,
Under engine-driven state, supplied electric power from the generator to the Generation Control portion.
7. the power control as described in any one of claim 3 to 6, which is characterized in that
The charging control section be judged as first battery charge volume be lower than OK range lower limit value in the case where,
Before charging to second battery, makes the first switch portion in an ON state and making the second switch
In the state that portion is in an off state, charged by the generation power of the generator to first battery.
8. the power control as described in any one of claim 3 to 7, which is characterized in that
For the charging control section in the charging process for being judged as second battery, the charge volume of first battery is low
In the case where the lower limit value of OK range, the first switch portion is being switched to on-state and by the second switch portion
It is switched in the state of off-state, is charged by the generation power of the generator to first battery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-091347 | 2016-04-28 | ||
| JP2016091347A JP2017197117A (en) | 2016-04-28 | 2016-04-28 | Power supply controller |
| PCT/JP2017/016121 WO2017188163A1 (en) | 2016-04-28 | 2017-04-21 | Power source controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109070819A true CN109070819A (en) | 2018-12-21 |
Family
ID=60161521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780026020.8A Withdrawn CN109070819A (en) | 2016-04-28 | 2017-04-21 | Power control |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2017197117A (en) |
| CN (1) | CN109070819A (en) |
| WO (1) | WO2017188163A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092642A (en) * | 2019-06-17 | 2020-12-18 | 株式会社电装 | Controller |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7342801B2 (en) | 2020-06-10 | 2023-09-12 | 株式会社デンソー | power control device |
| KR102538244B1 (en) * | 2020-12-22 | 2023-05-30 | 경북대학교 산학협력단 | Device and method for preventing battery abnormalities using diodes |
| SE545638C2 (en) * | 2022-02-17 | 2023-11-21 | Man Truck & Bus Se | A power supply circuit and a method for controlling a power supply circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004025979A (en) * | 2002-06-25 | 2004-01-29 | Shin Kobe Electric Mach Co Ltd | Power supply system for travelling vehicle |
| JP2004289889A (en) * | 2003-03-19 | 2004-10-14 | Matsushita Electric Ind Co Ltd | Charging apparatus and electronic equipment |
| JP4148468B2 (en) * | 2003-08-29 | 2008-09-10 | 富士電機ホールディングス株式会社 | Battery charge control device |
| JP5009715B2 (en) * | 2007-08-07 | 2012-08-22 | 株式会社オートネットワーク技術研究所 | In-vehicle communication system and distribution device |
| JP6260422B2 (en) * | 2014-04-15 | 2018-01-17 | 株式会社デンソー | Battery unit |
-
2016
- 2016-04-28 JP JP2016091347A patent/JP2017197117A/en active Pending
-
2017
- 2017-04-21 WO PCT/JP2017/016121 patent/WO2017188163A1/en active Application Filing
- 2017-04-21 CN CN201780026020.8A patent/CN109070819A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092642A (en) * | 2019-06-17 | 2020-12-18 | 株式会社电装 | Controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017197117A (en) | 2017-11-02 |
| WO2017188163A1 (en) | 2017-11-02 |
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Application publication date: 20181221 |