CN107046306B - Battery control device - Google Patents

Battery control device Download PDF

Info

Publication number
CN107046306B
CN107046306B CN201710069551.7A CN201710069551A CN107046306B CN 107046306 B CN107046306 B CN 107046306B CN 201710069551 A CN201710069551 A CN 201710069551A CN 107046306 B CN107046306 B CN 107046306B
Authority
CN
China
Prior art keywords
battery
temperature
value
reference value
maximum
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.)
Active
Application number
CN201710069551.7A
Other languages
Chinese (zh)
Other versions
CN107046306A (en
Inventor
栩川和治
大熊仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Suzuki Motor Corp
Original Assignee
Denso Corp
Suzuki Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Corp, Suzuki Motor Corp filed Critical Denso Corp
Publication of CN107046306A publication Critical patent/CN107046306A/en
Application granted granted Critical
Publication of CN107046306B publication Critical patent/CN107046306B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/14—Preventing excessive discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/15—Preventing overcharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The present invention relates to a kind of battery control devices, comprising: maximum/minimum temperature extraction portion obtains the battery cell temperature of battery, to extract maximum temperature and minimum temperature；First reference value comparing section, by maximum temperature compared with the first value；Second a reference value comparing section, by minimum temperature compared with the second value lower than the first value；Battery temperature selector sets battery temperature selective value based on comparative result；And charge and discharge limits value configuration part, the charge and discharge limits value of battery is set based on battery temperature selective value.If maximum temperature is greater than first reference value, and minimum temperature is big for the second a reference value or more, then selects maximum temperature as battery temperature selective value.If maximum temperature is first reference value or smaller, and minimum temperature then selects minimum temperature as battery temperature selective value less than the second a reference value.

Description

Battery control device
Technical field
The present invention relates to a kind of battery control device, battery control device control is mounted on hybrid vehicle or electronic The charge and discharge of high-voltage battery in vehicle.
Background technique
A kind of amount of charge and discharge limiting the high-voltage battery being mounted in hybrid vehicle or electric vehicle known is come Prevent the technology of overcharging or overdischarging.For example, providing temperature to battery in the electric vehicle disclosed in JP-A-7-67209 Sensor, and provided from generator or engine to battery based on the battery temperature detected by the temperature sensor, limitation The amount of charging.
According to JP-A-7-67209, charge volume is limited by the way that a value as battery temperature is used only.However, due to Battery is usually made of the component of multiple battery units, therefore can cause temperature change between battery unit.Therefore, which is determining It goes wrong when the amount that a battery cell temperature is charged and discharged suitable for limitation.
Summary of the invention
Embodiment provides a kind of battery control device, and the battery control device considers between multiple battery cell temperatures Variation suitably limit the amounts of charging and discharging.
As the one side of embodiment, a kind of battery control device includes: maximum/minimum temperature extraction portion, from multiple temperature Multiple battery cell temperatures that sensor obtains battery are spent, to extract battery maximum temperature and battery minimum temperature, the battery Maximum temperature is the maximum temperature of the multiple battery cell temperature, and the battery minimum temperature is the multiple battery unit temperature The minimum temperature of degree；First reference value comparing section, by the battery maximum temperature compared with first reference value；Second a reference value ratio Compared with portion, by the battery minimum temperature compared with the second a reference value lower than the first reference value；Battery temperature selector, base Battery temperature selective value is set in the comparison result of the first reference value comparing section and the second a reference value comparing section；With And charge and discharge limits value configuration part, the charge and discharge limits value of battery is set based on the battery temperature selective value.If described Battery maximum temperature is greater than the first reference value, and the battery minimum temperature is second a reference value or bigger, institute Stating battery temperature selector selects the battery maximum temperature as the battery temperature selective value.If the maximum temperature of the battery Degree is the first reference value or smaller, and the battery minimum temperature is less than second a reference value, the battery temperature Selector selects the battery minimum temperature as battery temperature selective value.
Detailed description of the invention
In the accompanying drawings:
Fig. 1 is the diagram for showing the configured in one piece of hybrid vehicle, and battery control device according to the embodiment is mounted on In the hybrid vehicle；
Fig. 2 is the control block diagram of battery control device according to the embodiment；
Fig. 3 is the maximum temperature and the exemplary timing diagram that changes over time of minimum temperature for showing battery；
Fig. 4 is the characteristic mapping for the relationship between battery temperature selective value and charge and discharge limits value that shows；And
Fig. 5 is the flow chart of the charge and discharge limitation processing executed by battery control device.
Specific embodiment
(embodiment)
Hereafter, the embodiment of battery control device will be described with reference to.The battery control device of the present embodiment is pacified In hybrid vehicle or electric vehicle, and to for example to motor generator (hereinafter referred to as " the MG ") confession as power supply The charged state of the high-tension battery of electric power is answered to execute control.
Firstly, by the configured in one piece of hybrid vehicle is described referring to Fig.1, the battery control device of the present embodiment It is mounted in the hybrid vehicle.Fig. 1 shows the hybrid vehicle of a MG 7 including engine 8 and as power supply 90.Note that the battery control device of another embodiment may be mounted at hybrid vehicle including two or more MG or It does not include in the electric vehicle of engine.
In hybrid vehicle 90 shown in Fig. 1, the power of MG 7 and the power of engine 8 are closed by power transfer mechanism 91 And.Power after merging is transmitted to axle 93 via differential mechanism 92, so that driving wheel 94 rotates.
MG 7 is such as permanent-magnet synchronous three-phase alternating current (AC) motor, and is electrically connected via inverter 6 with battery 2, should Inverter mutually converts direct current (DC) electric power and 3-phase AC power.
MG 7 consumes the electric power discharged from battery, generates power to run operation by power.In addition, MG 7 is by working as example Regenerative operation when slowing down such as hybrid vehicle 90 generates electric power.Battery 2 utilizes the electric power generated by MG 7 via inverter 6 Charging.
The phase current flowed between inverter 6 and MG 7 is detected by circuit sensor (not shown).In addition, the electricity of MG 7 Angle is detected by the rotation angle sensor (not shown) of such as resolver.MG controller 5 obtains current feedback signal (in Fig. 1 " electric current FB signal "), electrical angle signal etc., these signals are detected as described above, are driven thereby executing feedback control to calculate Dynamic signal, and calculated enabling signal is output to inverter 6.
Due to about such as feedback control and PWM control typical MG control technology be it is known, omit its in detail Thin description.In addition, controlling the engine controller of the driving of engine 8 based on speed, accelerator position etc. in Fig. 1, holding The Centralized Controller of the centralized management of the state of row battery 2, MG 7 and engine 8 and outputting and inputting about controller Signal is not shown.
Battery 2 be such as nickel-metal hydride battery or lithium ion battery can charge and discharge electricity accumulating unit.In addition, battery 2 can be The electricity accumulating unit of such as double layer capacitor.Such battery 2 is usually made of the component of multiple battery units.Battery 2 is via inverse Become device 6 to supply electric power to MG 7 and receive electric power from MG 7, thus be put in predetermined limit value or lower range from battery 2 Electricity and to battery 2 charge.
Note that then battery 2 is also referred to as drawn single for example, distinguishing if necessary to battery 2 and the A-battery for attachment First battery or high-tension battery.However, since without specifically describing another battery, the battery of this paper is by individually herein Referred to as battery 2.In addition, the DC electric power of battery 2 is not only supplied to inverter 6, but also can turn for example, by DC-DC converter It is changed to low voltage DC power, to be used as the power supply of attachment (not shown).
Battery control device 4 obtains the information of the charged state (so-called SOC) about battery 2, battery temperature etc..Base In them, battery control device 4 calculates the charge and discharge limits value for preventing battery 2 from overheating and deteriorating, and the charge and discharge are limited Value processed is sent to MG controller 5.The driving signal that the adjusting of MG controller 5 is used for inverter 6 makes the amount of the charge and discharge of battery 2 not Over-limit condition.
Based on above-mentioned configured in one piece, the battery control device 4 of present embodiment is specifically by determining for calculating charge and discharge limit The configuration of the battery temperature of value processed characterizes.
In JP-A-7-67209, using only a value as determining the battery temperature of charging limitation.However, due to Battery 2 as mentioned is made of the component of multiple battery units, therefore since the property difference between multiple batteries causes temperature Variation.In addition, also due to for example between the battery unit being located near cooling fan and the battery unit of separate cooling fan Battery 2 position and cause temperature change.
To solve the above-mentioned problems, in the present embodiment, the multiple temperature for detecting multiple battery cell temperatures are provided to battery 2 Spend sensor 31 to 36.Temperature sensor 31 to 36 is such as thermistor.Although six temperature sensors 31 are shown in FIG. 1 To 36, but the number of multiple temperature sensors is not limited.Multiple temperature sensors 31 to 36 can be supplied to corresponding electricity Pool unit.For example, each of temperature sensor 31 to 36 can be supplied to two in sensor.
In addition, when the position due to battery 2 leads to the temperature difference between battery unit, it is preferable that multiple temperature pass Sensor 31 to 36 is positioned to include that temperature is estimated and becomes highest position and temperature is estimated the position for becoming minimum.
Battery control device 4 obtains the battery cell temperature Tb1 to Tb6 detected respectively by temperature sensor 31 to 36.So Afterwards, battery control device 4 is based on multiple battery cell temperatures obtained, properly selects for setting charge and discharge limits value Battery temperature.
As shown in Fig. 2, battery control device 4 has A/D converter section 41, maximum/minimum temperature extraction portion 42, the first benchmark It is worth comparing section 43, the second a reference value comparing section 44, battery temperature selector 45, charge and discharge limits value configuration part 46 etc..
In general, the detected value of the battery cell temperature Tb1 to Tb6 obtained by temperature sensor 31 to 36 is as analog signal It is input to battery control device 4.The analog signal of input is converted to digital letter in the scheduled change-over period by A/D converter section 41 Number, to be sampled and held.Since the not limited to of temperature sensor is in six, in Fig. 2, multiple temperature detections of input Value in typical fashion by " Tb1, Tb2, Tb3 ... TbN " is indicated.Note that if using output digit signals temperature sensing Device can then be not provided with A/D converter section 41.
Maximum/minimum temperature extraction portion 42 obtains multiple battery cell temperature Tb1 to Tb6 to extract battery maximum temperature TbMAXWith battery minimum temperature TbMIN, which is the maximum temperature of multiple battery cell temperature Tb1 to TbN, should Battery minimum temperature is the minimum temperature of multiple battery cell temperature Tb1 to TbN.
First reference value comparing section 43 and the second a reference value comparing section 44 are obtained from maximum/minimum temperature extraction portion 42 respectively Battery maximum temperature TbMAXWith battery minimum temperature TbMIN。
The battery maximum temperature Tb that first reference value comparing section 43 will acquireMAXBe stored in first reference value therein Tref1 compares.
The battery minimum temperature Tb that second a reference value comparing section 44 will acquireMINBe stored in the second a reference value therein Tref2 compares.Second a reference value Tref2 is set to lower than first reference value Tref1.
Comparison result of the battery temperature selector 45 based on first reference value comparing section 43 and the second a reference value comparing section 44 To set battery temperature selective value TbSEL.This processing of battery temperature selector 45 is known as battery temperature selection processing, will It is described in detail below.
Charge and discharge limits value configuration part 46 is based on battery temperature selective value TbSELTo set the charge and discharge limits value of battery 2.
It then, will be referring to timing diagram illustrated in fig. 3 and battery temperature selective value Tb shown in Fig. 4SELIt is limited with charge and discharge The characteristic of value processed maps, and the battery temperature selection processing of battery temperature selector 45 is described.
Fig. 3 shows the battery maximum temperature Tb relative to first reference value Tref1 and the second a reference value Tref2MAXAnd electricity Pond minimum temperature TbMINThe mode changed over time.In addition, according to battery maximum temperature TbMAXWith battery minimum temperature TbMIN's Change with the time and the battery temperature selective value Tb selectedSELIt is indicated by thick line.Particularly noteworthy stage A, stage B With the battery temperature selective value Tb in stage CSELIt is indicated by circle.
Characteristic mapping in Fig. 4 shows boundary temperature α, β and γ, wherein α < β < γ.In battery temperature selective value TbSEL In medium temperature region between α and β, the absolute value of the limits value of both charge volume and discharge capacity all becomes maximum.That is, allowing to reach Maximum charge to charge volume Pc0 is discharged with the maximum of discharge capacity Pd0 is reached.
In battery temperature selective value TbSELIn low-temperature region less than α, the absolute value of charge and discharge limits value is as temperature is from α Reduce and is gradually reduced from Pc0 and Pd0.
In battery temperature selective value TbSELGreater than β and less than or equal to γ high-temperature area in, charge and discharge limits value it is exhausted Value is more sharp gradually reduced in low-temperature region as temperature increases from β from Pc0 and Pd0 ratio.It is selected in battery temperature Value TbSELIn region more than or equal to γ, charge and discharge limits value is 0, and charge and discharge are entirely disabled here.
It is considered that medium temperature region is normal temperature range, low-temperature region and high-temperature area are non-normal temperature ranges.
The amount that the charge and discharge of battery 2 are limited based on the performance plot in Fig. 4 can prevent battery unit in low-temperature region It deteriorates and prevents the battery unit in high-temperature area from overheating.
First reference value Tref1 shown in Fig. 3 is set to the temperature at the high temperature side in medium temperature region shown in Fig. 4.Separately Outside, the temperature at when the second a reference value Tref2 is set to the low temperature side in medium temperature region shown in Fig. 4.
It will describe along time shaft shown in Fig. 3 with battery maximum temperature TbMAXWith battery minimum temperature TbMINAt any time Change.
At the time of MG drives beginning at t0, battery maximum temperature TbMAXIt is first reference value Tref1 or smaller, and electricity Pond minimum temperature TbMINIt is the second a reference value Tref2 or bigger.Battery temperature selector 45 selects battery maximum temperature TbMAXMake For battery temperature selective value TbSELInitial value, as indicated by solid line circle.Alternatively, first reference value Tref1 can be as Selection indicated in dashed circle.
Between moment t0 and t1, state continues, wherein battery maximum temperature TbMAXIt is first reference value Tref1 or more It is small, and battery minimum temperature TbMINIt is the second a reference value Tref2 or bigger.At this point, battery temperature selector 45 keeps battery Temperature selective value TbSELPreceding value.Pay attention to, it is assumed that execute at least one processing in moment t0 or later.Therefore battery temperature choosing Select value TbSELInitial value be kept.
As represented by stage A, between time tl and t 2, battery maximum temperature TbMAXIt is first reference value Tref1 or more It is small, and battery minimum temperature TbMINLess than the second a reference value Tref2.At this point, battery temperature selector 45 selects battery minimum Temperature TbMINAs battery temperature selective value TbSEL。
Battery temperature selective value Tb in Fig. 4, in stage ASELIt is included in low-temperature region.So if battery is minimum Temperature TbMINLess than the second a reference value Tref2, by battery minimum temperature TbMINIt is elected to be battery temperature selective value TbSELIt can prevent Battery unit deterioration with low temperature.
In battery minimum temperature TbMINAt the time of consistent with the second a reference value Tref2 at t2, battery temperature selective value TbSEL Become the second a reference value Tref2.
Then as represented by stage B, between times t 2 and t 3, battery maximum temperature TbMAXIt is first reference value Tref1 Or it is smaller, and battery minimum temperature TbMINIt is the second a reference value Tref2 or bigger.At this point, battery temperature selector 45 is kept Battery temperature selective value TbSELPreceding value.Pay attention to, it is assumed that execute at least one processing in moment t2 or later.Therefore, when It carves the second a reference value Tref2 at t2 and remains battery temperature selective value TbSEL。
Battery temperature selective value Tb in Fig. 4, in stage BSELIt is included in what battery unit most will not be deteriorated and be overheated Medium temperature region.Therefore, in stage B, allow maximum charge and electric discharge.
In battery minimum temperature TbMINAt the time of consistent again with the second a reference value Tref2 between t3 and t4, battery is maximum Temperature TbMAXFor first reference value Tref1 or smaller, and battery minimum temperature TbMINLess than the second a reference value Tref2.At this point, Such as the case where between time ti to t 2, battery temperature selector 45 selects battery minimum temperature TbMINAs battery temperature Selective value TbSEL。
As represented by stage C, after the time t 4, battery maximum temperature TbMAXGreater than first reference value Tref1, and electricity Pond minimum temperature TbMINLess than the second a reference value Tref2.At this point, battery temperature selector 45 selects battery maximum temperature TbMAXMake For battery temperature selective value TbSEL。
Battery temperature selective value Tb in Fig. 4, in stage CSELIt is included in high-temperature area.So if battery is maximum Temperature TbMAXGreater than first reference value Tref1, by battery maximum temperature TbMAXIt is elected to be battery temperature selective value TbSELIt can prevent Battery unit overheat with high-temperature.
Although note that not being shown in FIG. 3, even if battery maximum temperature TbMAXGreater than first reference value Tref1, and Battery minimum temperature TbMINIt is for the second a reference value Tref2 or bigger, still select battery maximum temperature TbMAXAs battery temperature Selective value TbSEL。
Then, will flow chart referring to Figure 5, the charge and discharge to being executed by the battery control device 4 of the present embodiment Limitation processing is described.When MG 7 is driven, this handling routine will be periodically repeated execution, and referring to any behaviour As triggering.In the description of following flow chart, symbol " S " indicates step.
Note that considering timing diagram shown in Fig. 3, the process cycle of handling routine was configured to than the moment shown in Fig. 3 Interval between t0, t1, t2, t3 and t4 is shorter.In other words, it is assumed that each interim between the moment executes at least one Processing.Therefore, the battery temperature selective value Tb between moment t0 and moment t1SELPreceding value and moment t2 and moment t3 it Between battery temperature selective value TbSELPreceding value respectively after the time t theta with moment t2 after selected.
In S1, maximum/minimum temperature extraction portion 42 is from the multiple battery cell temperatures inputted to battery control device 4 Tb1 to TbN extracts battery maximum temperature TbMAXWith battery minimum temperature TbMIN。
In S2, first reference value comparing section 43 determines battery maximum temperature TbMAXWhether first reference value Tref1 is greater than.
If in S2 being "Yes", processing proceeds to S3.In S3, battery temperature selector 45 selects the maximum temperature of battery Spend TbMAXAs battery temperature selective value TbSEL。
If in S2 being "No", processing proceeds to S4.
In S4, the second a reference value comparing section 44 determines battery minimum temperature TbMINWhether less than the second a reference value Tref2.
If in S4 being "Yes", processing proceeds to S5.In S5, battery temperature selector 45 selects the minimum temperature of battery Spend TbMINAs battery temperature selective value TbSEL。
If in S4 being "No", processing proceeds to S6.
In S6, battery temperature selector 45 keeps battery temperature selective value TbSELPreceding value.Note that being opened in MG driving In initial treatment after beginning, battery temperature selector 45 selects such as battery maximum temperature TbMAXAs battery temperature selective value TbSELInitial value, prevent higher priority with give overheat.Alternatively, it can choose first reference value Tref1 work For initial value.
In S7, charge and discharge limits value configuration part 46 is based on battery temperature selective value TbSEL, by using as shown in Figure 4 Characteristic maps to set charge and discharge limit value.
As described above, the processing of S2 to S5 is summarized as follows in the flow chart in Fig. 5 referring to Fig. 3 and Fig. 4.
(1) if battery maximum temperature TbMAXGreater than first reference value Tref1, and battery minimum temperature TbMINIt is second A reference value Tref2 or bigger, battery temperature selector 45 selects battery maximum temperature TbMAXAs battery temperature selective value TbSEL。
It is thus possible to prevent the battery unit with high temperature from overheating.
(2) if battery maximum temperature TbMAXFor first reference value Tref1 or smaller, and battery minimum temperature TbMINIt is small In the second a reference value Tref2, battery temperature selector 45 selects battery minimum temperature TbMINAs battery temperature selective value TbSEL。
It is thus possible to prevent the battery unit with low temperature from deteriorating.
(3) if battery maximum temperature TbMAXGreater than first reference value Tref1, and battery minimum temperature TbMINLess than Two a reference value Tref2, battery temperature selector 45 select battery maximum temperature TbMAXAs battery temperature selective value TbSEL。
It is thus possible to be preferably prevented from the battery unit overheat with high temperature.
In addition, such as in the S6 of flow chart, if battery maximum temperature TbMAXIt is first reference value Tref1 or smaller, and And battery minimum temperature TbMINIt is the second a reference value Tref2 or bigger, the holding battery temperature selective value of battery temperature selector 45 TbSELPreceding value.It is thus possible to which simplification is performed when determining that battery unit has a possibility that low overheat and deterioration Processing.
As described above, the battery control device 4 of the present embodiment is it is contemplated that between the battery cell temperature of multiple batteries 2 Variation is to set charge and discharge limits value appropriate.Therefore, all battery units that battery 2 can be efficiently used for battery 2 can be with Avoid the region for overheating and deteriorating.
(other embodiments)
In the above-described embodiment, first reference value Tref1 and the second a reference value Tref2 are set in as normal temperature range Medium temperature region in.That is, battery maximum temperature TbMAXThe fact that greater than first reference value Tref1 and battery minimum temperature TbMINIt is small The exception in battery temperature is not indicated in the fact that the second a reference value Tref2.
In another embodiment, relative to the abnormal threshold value of the higher temperature side of first reference value Tref1 and opposite Abnormal threshold value in the lower temperature side of the second reference value Tref2 can be set to also be based on being obtained by battery control device Multiple battery cell temperatures detect exception.
It should be appreciated that the present invention is not limited to above-mentioned configurations, but it may occur to persons skilled in the art that it is any and all Modification, variation or equivalent should be considered in the scope of the present invention.
Hereinafter, the aspect of above-described embodiment will be summarized.
As the one aspect of the present embodiment, battery control device includes maximum/minimum temperature extraction portion (42), the first base Quasi- value comparing section (43), the second a reference value comparing section (44), battery temperature selector (45) and charge and discharge limits value configuration part (46)。
Maximum/minimum temperature extraction portion obtains multiple battery units of battery (2) from multiple temperature sensors (31 to 36) Temperature, to extract battery maximum temperature (TbMAX) and battery minimum temperature (TbMIN), which is multiple battery lists The maximum temperature of first temperature, the battery minimum temperature are the minimum temperatures of multiple battery cell temperatures.
First reference value comparing section is by battery maximum temperature compared with first reference value.Second a reference value comparing section is by battery Minimum temperature is compared with the second a reference value lower than first reference value.
Battery temperature selector is set based on the comparison result of first reference value comparing section and the second a reference value comparing section Battery temperature selective value (TbSEL).Charge and discharge limits value configuration part sets the charge and discharge limit of battery based on battery temperature selective value Value processed.
Battery temperature selector sets battery temperature selective value as follows.
(1) if battery maximum temperature is greater than first reference value, and battery minimum temperature is big for the second a reference value or more, Battery temperature selector selects battery maximum temperature as battery temperature selective value.
(2) if battery maximum temperature is first reference value or smaller, and battery minimum temperature is less than the second a reference value, Battery temperature selector selects battery minimum temperature as battery temperature selective value.
In situation (1), it can prevent the battery unit with high temperature from overheating.In situation (2), it can prevent from having low The battery unit deterioration of temperature.Accordingly, it is considered to the variation between multiple battery cell temperatures, the amount of charge and discharge can be limited suitably System, thus, all battery units that battery can be efficiently used for battery can be to avoid the region for overheating and deteriorating.
Furthermore it is preferred that if battery maximum temperature is first reference value or smaller, and battery minimum temperature is second A reference value is bigger, and battery temperature selector keeps the preceding value of battery temperature selective value.It is thus possible to simplify when determining battery Unit processing performed when there is a possibility that low overheat and deterioration.
It is highly preferred that battery temperature selector sets battery temperature selective value as follows.
(3) if battery maximum temperature is greater than first reference value, and battery minimum temperature is less than the second a reference value, battery Temperature selector selects battery maximum temperature as battery temperature selective value.
It is thus possible to be preferably prevented from the battery unit overheat with high temperature.

Claims (3)

1. a kind of battery control device, comprising:
Maximum temperature and minimum temperature extraction unit obtain multiple battery cell temperatures of battery, from multiple temperature sensors to mention Battery maximum temperature and battery minimum temperature are taken, the battery maximum temperature is the maximum temperature of the multiple battery cell temperature Degree, the battery minimum temperature is the minimum temperature of the multiple battery cell temperature；
First reference value comparing section, by the battery maximum temperature compared with first reference value；
Second a reference value comparing section, by the battery minimum temperature compared with the second a reference value lower than the first reference value；
Battery temperature selector, the comparison result based on the first reference value comparing section and the second a reference value comparing section come Set battery temperature selective value；And
Charge and discharge limits value configuration part sets the charge and discharge limits value of the battery based on the battery temperature selective value, In
If the battery maximum temperature is greater than the first reference value, and the battery minimum temperature is second benchmark Value is bigger, then the battery temperature selector selects the battery maximum temperature as the battery temperature selective value, and
If the battery maximum temperature is the first reference value or smaller, and the battery minimum temperature is less than described the Two a reference values, then the battery temperature selector selects the battery minimum temperature as the battery temperature selective value.
2. battery control device as described in claim 1, which is characterized in that
If the battery maximum temperature is the first reference value or smaller, and the battery minimum temperature is described second A reference value is bigger, then the battery temperature selector keeps the preceding value of the battery temperature selective value.
3. battery control device as described in claim 1, which is characterized in that
If the battery maximum temperature is greater than the first reference value, and the battery minimum temperature is less than second base Quasi- value, then the battery temperature selector selects the battery maximum temperature as the battery temperature selective value.
CN201710069551.7A 2016-02-08 2017-02-08 Battery control device Active CN107046306B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-021873 2016-02-08
JP2016021873A JP6525431B2 (en) 2016-02-08 2016-02-08 Battery controller

Publications (2)

Publication Number Publication Date
CN107046306A CN107046306A (en) 2017-08-15
CN107046306B true CN107046306B (en) 2019-09-10

Family

ID=59382089

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710069551.7A Active CN107046306B (en) 2016-02-08 2017-02-08 Battery control device

Country Status (3)

Country Link
JP (1) JP6525431B2 (en)
CN (1) CN107046306B (en)
DE (1) DE102017102458B4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6962826B2 (en) * 2018-01-16 2021-11-05 トヨタ自動車株式会社 Battery system
CN111762065A (en) * 2020-06-23 2020-10-13 上海擎感智能科技有限公司 Battery protection method, system, computer readable storage medium and vehicle terminal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008522153A (en) * 2004-11-29 2008-06-26 エルジー・ケム・リミテッド Joint battery condition and parameter estimation system and method
CN105003334A (en) * 2014-04-18 2015-10-28 福特环球技术公司 Electric actuator current control responsive to temperature

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0767209A (en) 1993-08-20 1995-03-10 Mitsubishi Motors Corp Electric automobile
JP3783391B2 (en) * 1998-02-25 2006-06-07 トヨタ自動車株式会社 Secondary battery device
JP3781366B2 (en) * 2002-07-23 2006-05-31 本田技研工業株式会社 Secondary battery charge / discharge controller
US7683582B2 (en) * 2005-07-28 2010-03-23 Ford Global Technologies, Llc System and method for thermal management of a vehicle power source
JP5089883B2 (en) * 2005-12-16 2012-12-05 日立ビークルエナジー株式会社 Battery management device
JP4586832B2 (en) * 2007-08-10 2010-11-24 トヨタ自動車株式会社 Electric vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008522153A (en) * 2004-11-29 2008-06-26 エルジー・ケム・リミテッド Joint battery condition and parameter estimation system and method
CN105003334A (en) * 2014-04-18 2015-10-28 福特环球技术公司 Electric actuator current control responsive to temperature

Also Published As

Publication number Publication date
JP2017143604A (en) 2017-08-17
DE102017102458B4 (en) 2023-12-14
CN107046306A (en) 2017-08-15
DE102017102458A1 (en) 2017-08-10
JP6525431B2 (en) 2019-06-05

Similar Documents

Publication Publication Date Title
US20120153877A1 (en) System for causing temperature rise in battery
KR101025896B1 (en) Power supply system, vehicle using the same, power supply system control method, and computer-readable recording medium containing program for causing computer to execute the method
US8659182B2 (en) Power supply system and electric powered vehicle including power supply system, and method for controlling power supply system
US10797364B2 (en) Power supply system of vehicle
US20130021000A1 (en) Charge and discharge control apparatus
JP5720620B2 (en) vehicle
JP5470829B2 (en) Discrimination device for discriminating the state of a lithium ion battery
JP6694156B2 (en) Control device for hybrid vehicle
JP6127825B2 (en) Power storage device charge / discharge control device for construction machinery
JP2009296777A (en) Power storage controller and vehicle
JP7095587B2 (en) Battery system, electric vehicle and its control method
JP2009033830A (en) Controller and control method for electric system, program achieving the method, and recording medium recording the program
JP2010273413A (en) Device for controlling battery pack
KR20100018034A (en) Power supply system, vehicle using the same, power supply system control method, and computer-readable recording medium containing the program for causing computer to execute the control method
CN107046306B (en) Battery control device
CN104104131A (en) Battery charge/discharge control apparatus
US10576835B2 (en) Energy storage device, transport apparatus, and control method
JP2010136553A (en) Power supply system and electric vehicle loaded therewith
JP6024563B2 (en) Vehicle power supply control device
CN104015671A (en) Battery status presuming apparatus and control system of vehicle
WO2012124554A1 (en) Power storage device, and power supply and mobile body provided therewith
JP2009290984A (en) Charge/discharge controller for vehicle battery
JP2018033262A (en) Voltage conversion device
JP5754304B2 (en) Control apparatus and control method
JP2010239710A (en) Charging control system, battery pack, vehicle, and charging control method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant