CN109286049A - Battery temperature determines method and system - Google Patents
Battery temperature determines method and system Download PDFInfo
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- CN109286049A CN109286049A CN201710601618.7A CN201710601618A CN109286049A CN 109286049 A CN109286049 A CN 109286049A CN 201710601618 A CN201710601618 A CN 201710601618A CN 109286049 A CN109286049 A CN 109286049A
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- 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
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- 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
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
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- 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
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- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of battery temperature and determines method and system, is used for electric vehicle, and the battery temperature determines that method includes: to receive present frame battery temperature signal；According to the present frame battery temperature signal, the mean temperature, maximum temperature and minimum temperature of the battery of the present frame are obtained；According to the height relationship of the mean temperature of the battery of the mean temperature of the battery of the present frame and former frame, the changing pattern of battery temperature is determined；According to the changing pattern, determine that the battery temperature is mean temperature, maximum temperature or the minimum temperature of the battery of the present frame.Battery temperature of the present invention determines method and system, not only can accurately determine current battery temperature, also rationally can handle and use battery temperature signal.
Description
Technical field
The present invention relates to on-vehicle battery technical field, in particular to a kind of battery temperature determines method and system.
Background technique
As the management of Environmental pollution is increasing, country requires the average fuel consumption of automobile more and more tighter
Lattice, pure electric automobile become following developing direction.Power accumulator is the energy source of whole pure electric vehicle, gives power electric
Machine and entire vehicle electrical system power supply.Battery temperature is the important parameter of power accumulator, too high or too low for temperature all to influence electricity
The power output in pond, charging rate.Since as made of multiple battery combinations, internal structure is very multiple inside power accumulator
Miscellaneous, sensors for measuring temperature has tens, so the accurate battery temperature of more difficult determination.Therefore, it is also difficult to pass through instrument
The modes such as table show accurate battery temperature to driver.
Summary of the invention
In view of this, the present invention is directed to propose a kind of battery temperature determines method, it cannot accurately really to solve the prior art
The problem of determining battery temperature.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of battery temperature determines method, is used for electric vehicle, and the battery temperature determines that method includes: to receive present frame electricity
Pond temperature signal；According to the present frame battery temperature signal, mean temperature, the maximum temperature of the battery of the present frame are obtained
And minimum temperature；According to the height relationship of the mean temperature of the battery of the mean temperature of the battery of the present frame and former frame,
Determine the changing pattern of battery temperature；According to the changing pattern, determine that the battery temperature is the battery of the present frame
Mean temperature, maximum temperature or minimum temperature.
Further, the mean temperature of the battery of the mean temperature and former frame of the battery according to the present frame
Height relationship, the step of determining the changing pattern of battery temperature, comprising: the mean temperature of the battery of the present frame and institute
State the mean temperature of the battery of former frame；If the mean temperature of the battery of the present frame is averaged than the battery of the former frame
Temperature is high, it is determined that the changing pattern of the battery temperature is first mode；If the mean temperature ratio of the battery of the present frame
The mean temperature of the battery of the former frame is low, it is determined that the changing pattern of the battery temperature is second mode；If described work as
The mean temperature of the battery of previous frame is identical as the mean temperature of the battery of the former frame, it is determined that the variation of the battery temperature
Mode is the third mode.
Further, the mean temperature of the battery of the mean temperature and former frame of the battery according to the present frame
Height relationship, before the step of determining the changing pattern of battery temperature, the method also includes: judge the present frame battery temperature
Spend whether signal is first frame battery temperature signal；If the present frame battery temperature signal is first frame battery temperature letter
Number, it is determined that the changing pattern of the battery temperature is the first mode；If the present frame battery temperature signal is not institute
First frame battery temperature signal is stated, then according to the mean temperature of the battery of the mean temperature of the battery of the present frame and former frame
Height relationship, determine the changing pattern of battery temperature.
Further, described according to the changing pattern, determine that the battery temperature is the flat of the battery of the present frame
The step of equal temperature, maximum temperature or minimum temperature, comprising:, will when the changing pattern of the battery temperature is first mode
The mean temperature of the battery of the present frame is respectively compared with the first calibration value of the first mode and the second calibration value；If institute
The mean temperature of the battery of present frame is stated lower than first calibration value, it is determined that the battery temperature is the electricity of the present frame
The minimum temperature in pond；If the mean temperature of the battery of the present frame is not less than first calibration value and lower than second mark
Definite value, it is determined that the battery temperature is the mean temperature of the battery of the present frame；If the battery of the present frame is averaged
Temperature is not less than second calibration value, it is determined that the battery temperature is the maximum temperature of the battery of the present frame；Wherein,
First calibration value is lower than second calibration value.
Further, described according to the changing pattern, determine that the battery temperature is the flat of the battery of the present frame
The step of equal temperature, maximum temperature or minimum temperature, further includes: when the changing pattern of the battery temperature is second mode,
By the mean temperature of the battery of the present frame respectively compared with the third calibration value of the second mode and the 4th calibration value；If
The mean temperature of the battery of the present frame is not higher than the third calibration value, it is determined that the battery temperature is the present frame
Battery minimum temperature；If the mean temperature of the battery of the present frame is higher than the third calibration value and not higher than described the
Four calibration values, it is determined that the battery temperature is the mean temperature of the battery of the present frame；If the average temperature of the present frame
Degree is higher than the 4th calibration value, it is determined that the battery temperature is the maximum temperature of the battery of the present frame；Wherein, described
Third calibration value is less than the 4th calibration value.
Further, described according to the changing pattern, determine that the battery temperature is the flat of the battery of the present frame
The step of equal temperature, maximum temperature or minimum temperature, further includes: when the changing pattern of the battery temperature is the third mode,
Determine that the battery temperature is the battery temperature of former frame.
Further, described according to the present frame battery temperature signal, obtain the average temperature of the battery of the present frame
After the step of degree, maximum temperature and minimum temperature, the method also includes: judge the minimum temperature of the battery of the present frame
Whether the maximum temperature for the battery for whether being lower than the first limit value and the present frame is higher than the second limit value；If described work as
The minimum temperature of the battery of previous frame is lower than first limit value, then issues low-temperature warning；If the battery of the present frame is most
High-temperature is higher than second limit value, then issues high temperature alarm；Wherein, first limit value is limited lower than described second
Value.
Further, the determining battery temperature is mean temperature, the maximum temperature or minimum of the battery of the present frame
After the step of temperature, the method also includes: by the determining battery corresponding in the beat of pointer to instrument board of instrument board
The position of temperature.
Compared with the existing technology, battery temperature of the present invention determines that method has the advantage that
1, battery temperature of the present invention determines method, and the average temperature of the battery of present frame is obtained from battery temperature signal
Degree, maximum temperature and minimum temperature, and according to the mean temperature of the battery of the mean temperature and former frame of the battery of present frame
Height relationship determines the changing pattern of battery temperature, so as to determine that battery temperature is being averaged for present frame according to changing pattern
Temperature, maximum temperature or minimum temperature not only can accurately determine current battery temperature, also rationally can handle and use battery temperature
Spend signal.
2, battery temperature of the present invention determines method, when the minimum temperature of battery is lower than the first limit value, issues
Low-temperature warning, alternatively, issuing high temperature alarm when the maximum temperature of battery is higher than the second limit value and being avoided with alerting drivers
Security risk.
3, battery temperature of the present invention determines method, using determining battery temperature corresponding in the beat of pointer to instrument board
The mode of the position of degree shows battery temperature, in such a way that pointer indicates on instrument board, can accurately show battery temperature；
Due to that in such a way that pointer indicates, can reflect the change procedure of battery temperature in real time, and pointer seamlessly transits, will not be substantially
It swings.
It, cannot accurately really to solve the prior art another object of the present invention is to propose that a kind of battery temperature determines system
The problem of determining battery temperature.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of battery temperature determines system, is used for electric vehicle, and the battery temperature determines that system includes: receiving module, uses
In reception present frame battery temperature signal；Module is obtained, for obtaining described current according to the present frame battery temperature signal
Mean temperature, maximum temperature and the minimum temperature of the battery of frame；First determining module, for according to the battery of the present frame
The height relationship of the mean temperature of the battery of mean temperature and former frame, determines the changing pattern of battery temperature；Second determines mould
Block, for determining that the battery temperature is mean temperature, the maximum temperature of the battery of the present frame according to the changing pattern
Or minimum temperature.
Further, further includes: first judgment module is obtained for described according to the present frame battery temperature signal
After the step of mean temperature of the battery of the present frame, maximum temperature and minimum temperature, the battery of the present frame is judged
The maximum temperature of the minimum temperature battery that whether is lower than the first limit value and the present frame whether be higher than the second restriction
Value；First alarm module issues low temperature if the minimum temperature of the battery for the present frame is lower than first limit value
Alarm；Second alarm module issues height if the maximum temperature of the battery for the present frame is higher than second limit value
Temperature alarm；Wherein, first limit value is lower than second limit value.
Battery temperature of the present invention determines that system and above-mentioned battery temperature determine method institute compared with the existing technology
Have the advantage that identical, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that the battery temperature of first embodiment of the invention determines the flow chart of method；
Fig. 2 is that the battery temperature of second embodiment of the invention determines the flow chart of method；
Fig. 3 is that the battery temperature of third embodiment of the invention determines the flow chart of method；
Fig. 4 is that the battery temperature of fourth embodiment of the invention determines the flow chart of method；
Fig. 5 is that the battery temperature of fifth embodiment of the invention determines the flow chart of method；
Fig. 6 is that the battery temperature of sixth embodiment of the invention determines the flow chart of method；
Fig. 7 is that the battery temperature of seventh embodiment of the invention determines a kind of structural block diagram of system；
Fig. 8 is that the battery temperature of seventh embodiment of the invention determines another structural block diagram of system.
Description of symbols:
701- receiving module, 702- obtain module, the first determining module of 703-, the second determining module of 704-, 705- and show
Module, 706- first judgment module, the first alarm module of 707-, the second alarm module of 708-, the second judgment module of 709-, 710-
Third determining module, the first Comparative sub-module of 7031-, 7032- first determine submodule, 7033- second determine submodule,
7034- third determines that submodule, the second Comparative sub-module of 7041-, 7042- the 4th determine that submodule, 7043- the 5th determine submodule
Block, 7044- the 6th determine that submodule, 7045- third Comparative sub-module, 7046- the 7th determine that submodule, 7047- the 8th determine
Submodule, 7048- the 9th determine that submodule, 7049- the tenth determine submodule.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
First embodiment
First embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in Figure 1, the battery temperature determines that method includes following process:
Step S101: present frame battery temperature signal is received.
Structure is complicated for the battery of electric vehicle, the sensor including multiple measurement temperature.Each sensor can issue
Battery temperature signal.In the present embodiment, multiple battery temperature signals are aggregated into three battery temperature signals, are separately included average
The information of temperature, maximum temperature and minimum temperature.The battery temperature signal can be received by CAN line.In addition, the battery temperature is believed
It number generates and sends according to certain frequency, therefore, multiframe battery temperature signal can be sequentially received in chronological order.
Step S102: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Wherein, the mean temperature of battery is the average value of the collected battery temperature of multiple sensors.The highest temperature of battery
Degree is the maximum temperature in the collected battery temperature of multiple sensors.The minimum temperature of battery is that multiple sensors are collected
Minimum temperature in battery temperature.
Step S103: it is closed according to the height of the mean temperature of the battery of the mean temperature of the battery of present frame and former frame
System, determines the changing pattern of battery temperature.
The mean temperature of the battery of present frame could possibly be higher than the mean temperature of the battery of former frame, the battery lower than former frame
Mean temperature or the battery equal to former frame mean temperature.Therefore, according to the difference of the height relationship of the two, the electricity
There are three types of the changing patteries of pond temperature.
Specifically, in practical application, the mean temperature of the battery of former frame imparting temp_old parameter can be passed through
The storage of temp_old parameter.It assigns the mean temperature of the battery of present frame to temp parameter, is stored by temp parameter；Then pass through
Compare temp_old parameter and temp parameter to determine the average temperature of the mean temperature of the battery of present frame and the battery of former frame
The height relationship of degree.
Step S104: according to changing pattern, determine mean temperature, maximum temperature that battery temperature is the battery of present frame or
Minimum temperature.
Changing pattern is different, and most representative battery temperature is different.Therefore, according to changing pattern, it may be determined that battery
Temperature is mean temperature, maximum temperature or the minimum temperature of present frame.
Specifically, in practical application, the battery temperature of the determination can be assigned to temp_act parameter, in order to pass through finger
The display modes such as pin type instrument, read out instrument show the battery temperature of the determination.
Preferably, after battery temperature has been determined, this method further include: store the mean temperature of the battery of present frame.
Specifically, can be joined by assigning the mean temperature of the battery of present frame to temp_old parameter by temp_old
Number storage.The mean temperature of the battery for the former frame that temp_old parameter stored originally can be by the average temperature of the battery of the present frame
Degree covering.It, can be by the battery of the mean temperature of the battery of a later frame and present frame after receiving a later frame battery temperature signal
Mean temperature compare.
To sum up, the battery temperature of first embodiment of the invention determines method, and the electricity of present frame is obtained from battery temperature signal
Mean temperature, maximum temperature and the minimum temperature in pond, and according to the battery of the mean temperature and former frame of the battery of present frame
The height relationship of mean temperature determines the changing pattern of battery temperature, so as to determine that battery temperature is to work as according to changing pattern
Mean temperature, maximum temperature or the minimum temperature of previous frame not only can accurately determine current battery temperature, can also rationally handle and
Use battery temperature signal.
Second embodiment
Second embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in Fig. 2, the battery temperature determines that method includes following process:
Step S201: present frame battery temperature signal is received.
Step S202: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Step S201~S202 is identical as step S101~S102, and details are not described herein.
Step S203: compare the mean temperature of the mean temperature of the battery of present frame and the battery of former frame.
By the step, compare height relationship between the two, so as to the changing pattern of temperature.
Step S204: if the mean temperature of the battery of present frame is higher than the mean temperature of the battery of former frame, it is determined that electricity
The changing pattern of pond temperature is first mode.
If the mean temperature of the battery of present frame is higher than the mean temperature of the battery of former frame, showing battery temperature
Rise, then the changing pattern of the battery temperature is first mode.
Step S205: when the changing pattern of battery temperature is first mode, by the mean temperature of the battery of present frame point
Not compared with the first calibration value of first mode and the second calibration value.
Wherein, the first calibration value is lower than the second calibration value.First calibration value be battery mean temperature it is raised during,
With the immediate mean temperature of minimum temperature of battery, the second calibration value is during the mean temperature of battery is raised, with electricity
The immediate mean temperature of the maximum temperature in pond.Therefore, during showing the battery temperature by pointer dashboard, to finger
When the temperature of needle instruction switches between mean temperature, maximum temperature and minimum temperature, variable quantity is minimum.It should be understood that
First calibration value can be higher than the first limit value, and the second calibration value can be lower than the second limit value, avoid generating security risk.First limit
Definite value is the temperature that low temperature limits power.Second limit value is the temperature that high temperature limits power.
Specifically, carrying out step S206 if the mean temperature of the battery of present frame is lower than the first calibration value；If present frame
Battery mean temperature not less than the first calibration value and be lower than the second calibration value, then carry out step S207；If the electricity of present frame
The mean temperature in pond is not less than the second calibration value, then carries out step S208.
Step S206: determine that battery temperature is the minimum temperature of the battery of present frame.
If the mean temperature of the battery of present frame is lower than the first calibration value, determine that battery temperature is current by this step
The minimum temperature of the battery of frame.
Step S207: determine that battery temperature is the mean temperature of the battery of present frame.
If the mean temperature of the battery of present frame is not less than the first calibration value and is lower than the second calibration value, pass through this step
Determine that battery temperature is the mean temperature of the battery of present frame.
Step S208: determine that battery temperature is the maximum temperature of the battery of present frame.
If the mean temperature of the battery of present frame is not less than the second calibration value, determine that battery temperature is to work as by this step
The maximum temperature of the battery of previous frame.
Step S209: by the position of determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
In the present embodiment, determining battery temperature is shown by pointer dashboard.Specifically, in practical application,
The rotation step number of the stepper motor of pointer can be controlled according to determining battery temperature, to control the swing angle of pointer, will referred to
Needle swings to the position of corresponding battery temperature.
Substantially quickly changing, which occurs, in pointer when indicated value changes in order to prevent causes pointer jitter phenomenon, can increase to pointer
Add damping.The size of specific increased damping can be determined according to the subregion of the temperature of instrument board.
Battery temperature is shown by the way of the position of determining battery temperature corresponding in the beat of pointer to instrument board, by
It is generally higher in the temperature accuracy that pointer instrument is shown, it can accurately show battery temperature；Due in such a way that pointer indicates,
It can reflect the change procedure of battery temperature in real time, and pointer seamlessly transits, and will not substantially swing.Relative to the disconnected of battery temperature
The problem of code formula display mode, the short in size section for avoiding short in size formula display mode is excessive, cannot accurately show battery temperature.
To sum up, the battery temperature of second embodiment of the invention determines method, if before the mean temperature ratio of the battery of present frame
The mean temperature of the battery of one frame is high, then by the mean temperature of the battery of present frame respectively with the first calibration value of first mode and
Second calibration value compares, and according to different comparison results, determines that battery temperature is mean temperature, the highest temperature of the battery of present frame
Degree or minimum temperature, not only accurately determine current battery temperature, also rationally can handle and use battery temperature signal.
3rd embodiment
Third embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in figure 3, the battery temperature determines that method includes following process:
Step S301: present frame battery temperature signal is received.
Step S302: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Step S303: compare the mean temperature of the mean temperature of the battery of present frame and the battery of former frame.
Step S301~S303 is identical as step S201~S203, and details are not described herein.
Step S304: if the mean temperature of the battery of present frame is lower than the mean temperature of the battery of former frame, it is determined that electricity
The changing pattern of pond temperature is second mode.
If the mean temperature of the battery of present frame is lower than the mean temperature of the battery of former frame, showing battery temperature
It reduces, then the changing pattern of the battery temperature is second mode.
Step S305: when the changing pattern of battery temperature is second mode, by the mean temperature of the battery of present frame point
Not compared with the third calibration value of second mode and the 4th calibration value.
Wherein, third calibration value is lower than the 4th calibration value.During third calibration value is the mean temperature reduction of battery,
With the immediate mean temperature of minimum temperature of battery, the 4th calibration value is during the mean temperature of battery reduces, with electricity
The immediate mean temperature of the maximum temperature in pond.Therefore, during showing the battery temperature by pointer dashboard, to finger
When the temperature of needle instruction switches between mean temperature, maximum temperature and minimum temperature, variable quantity is minimum.It should be understood that
Third calibration value can be higher than the first limit value, and the 4th calibration value can be lower than the second limit value, avoid generating security risk.First limit
Definite value is the temperature that low temperature limits power.Second limit value is the temperature that high temperature limits power.
Further, since battery behavior, determines that the first calibration value is greater than third calibration value, the second calibration value is greater than the 4th mark
Definite value, so determining battery temperature all can when the mean temperature of battery is between third calibration value and the second calibration value
It is the mean temperature of the battery of present frame.
Specifically, carrying out step S306 if the mean temperature of the battery of present frame is not higher than third calibration value；If current
The mean temperature of the battery of frame is higher than third calibration value and is not higher than the 4th calibration value, then carries out step S307；If present frame
The mean temperature of battery is higher than the 4th calibration value, then carries out step S308.
Step S306: determine that battery temperature is the minimum temperature of the battery of present frame.
If the mean temperature of the battery of present frame is not higher than third calibration value, determine that battery temperature is to work as by this step
The minimum temperature of the battery of previous frame.
Step S307: determine that battery temperature is the mean temperature of the battery of present frame.
If the mean temperature of the battery of present frame is higher than third calibration value and is not higher than the 4th calibration value, pass through this step
Determine that battery temperature is the mean temperature of the battery of present frame.
Step S308: determine that battery temperature is the maximum temperature of the battery of present frame.
If the mean temperature of the battery of present frame is higher than the 4th calibration value, determine that battery temperature is current by this step
The maximum temperature of the battery of frame.
Step S309: by the position of determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
The step is identical as step S209, and details are not described herein.
To sum up, the battery temperature of third embodiment of the invention determines method, if the mean temperature of present frame is than former frame
Mean temperature is low, then by the mean temperature of present frame respectively compared with the third calibration value of second mode and the 4th calibration value, root
According to different comparison results, determine that displays temperature is mean temperature, maximum temperature or the minimum temperature of present frame, it is not only accurate true
Battery temperature before settled, also rationally can handle and use battery temperature signal.
Fourth embodiment
Fourth embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in figure 4, the battery temperature determines that method includes following process:
Step S401: present frame battery temperature signal is received.
Step S402: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Step S403: compare the mean temperature of the mean temperature of the battery of present frame and the battery of former frame.
Step S401~S403 is identical as step S201~S203, and details are not described herein.
Step S404: if the mean temperature of the battery of present frame is identical as the mean temperature of the battery of former frame, it is determined that
The changing pattern of battery temperature is the third mode.
If the mean temperature of the battery of present frame is identical as the mean temperature of the battery of former frame, show that battery temperature does not have
It changes, then the changing pattern of the battery temperature is the third mode.
Step S405: when the changing pattern of battery temperature is the third mode, determine that battery temperature is the battery of former frame
Temperature.
Since the mean temperature of battery does not change, it is thus determined that battery temperature it is also constant, the battery temperature be it is previous
The battery temperature of frame.
Step S406: by the position of determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
The step is identical as step S209, and details are not described herein.
To sum up, the battery temperature of fourth embodiment of the invention determines method, if the mean temperature of the battery of present frame is with before
The mean temperature of the battery of one frame is identical, it is determined that battery temperature is the battery temperature of former frame, not only accurate to determine currently
Battery temperature also rationally can handle and use battery temperature signal.
5th embodiment
Fifth embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in figure 5, the battery temperature determines that method includes following process:
Step S501: present frame battery temperature signal is received.
Step S502: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Step S501~S502 is identical as step S101~S102, and details are not described herein.
Step S503: judge whether present frame battery temperature signal is first frame battery temperature signal.
Under normal circumstances, when powering on for the first time or when CAN signal timeout recovery, the present frame battery temperature signal that receives
For first frame battery temperature signal.
If present frame battery temperature signal is first frame battery temperature signal, step S504 is carried out；If present frame battery
Temperature signal is not first frame battery temperature signal, then carries out step S505.
Step S504: the changing pattern for determining battery temperature is first mode.
The first mode can refer to the first mode of second embodiment, and details are not described herein.
Step S505: it is closed according to the height of the mean temperature of the battery of the mean temperature of the battery of present frame and former frame
System, determines the changing pattern of battery temperature.
Step S506: according to changing pattern, determine mean temperature, maximum temperature that battery temperature is the battery of present frame or
Minimum temperature.
Step S505~S506 is identical as step S103~S104, and details are not described herein.
Step S507: by the position of determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
The step is identical as step S209, and details are not described herein.
To sum up, the battery temperature of fifth embodiment of the invention determines method, and present frame battery temperature signal is first frame electricity
When the temperature signal of pond, then according to first mode, battery temperature is determined, not only accurate display powers on for the first time or CAN signal time-out
Battery temperature when recovery also rationally can handle and use temperature signal.
Sixth embodiment
Sixth embodiment of the invention discloses a kind of battery temperature and determines method.The battery temperature determines method for electronic
Vehicle.The battery is generally the power accumulator of electric vehicle.As shown in fig. 6, the battery temperature determines that method includes following process:
Step S601: present frame battery temperature signal is received.
Step S602: according to present frame battery temperature signal, obtain the mean temperature of the battery of present frame, maximum temperature and
Minimum temperature.
Step S601~S602 is identical as step S101~S102, and details are not described herein.
Step S603: judging whether the minimum temperature of the battery of present frame is lower than the first limit value, and, the electricity of present frame
Whether the maximum temperature in pond is higher than the second limit value.
If the minimum temperature of the battery of present frame is lower than the first limit value, step S604 is carried out.If the battery of present frame
Maximum temperature be higher than the second limit value, then carry out step S605.
Wherein, the first limit value is lower than the second limit value.First limit value is the temperature that low temperature limits power.Second limit value
The temperature of power is limited for high temperature.The temperature of low temperature limit power and the temperature of high temperature limit power are the output power for limiting battery
Temperature.
Specifically, in practical applications, the maximum temperature fed back by BMS (battery management system) according to temperature sensor
Judge whether to reach the first limit value and the second limit value respectively with minimum temperature.If reached, BMS will limit battery
Output power.
Step S604: low-temperature warning is issued.
When because battery temperature it is too low, cause charging rate slowly or vehicle limit power (vehicle power output is restricted, only
Can maintain to run at a low speed, protect battery) when, capable of emitting low-temperature warning.The form of the low-temperature warning can there are many, for example, logical
Cross display, sound etc. mode.
It, can be by the low-temperature warning area in the beat of pointer to instrument board of instrument board (such as indigo plant when using pointer dashboard
Area), keep driver clearer to the state of vehicle, to make corresponding counter-measure.
Step S605: high temperature alarm is issued.
When because battery temperature it is excessively high, cause charging rate slowly or vehicle limit power (vehicle power output is restricted, only
Can maintain to run at a low speed, protect battery) when, capable of emitting high temperature alarm.The form of the high temperature alarm can there are many, for example, logical
Cross display, sound etc. mode.
It, can be (such as red by the high temperature alarm area in the beat of pointer to instrument board of instrument board when using pointer dashboard
Area), keep driver clearer to the state of vehicle, to make corresponding counter-measure.
In addition, the either beat of pointer is to low-temperature warning area or high temperature alarm area, it can also be by lighting limit power alarm
Lamp issues the modes such as alarm sound with alerting drivers.
It should be understood that if the minimum temperature of the battery of present frame is not less than the first limit value, also, the electricity of present frame
The maximum temperature in pond is not higher than the second limit value, then can determine battery temperature by the method for first embodiment to the 5th embodiment.
To sum up, the battery temperature of sixth embodiment of the invention determines method, can the battery of present frame minimum temperature it is low
In the first limit value, alternatively, in the case that the maximum temperature of the battery of present frame is higher than the second limit value, issue low-temperature warning or
Person's high temperature alarm avoids security risk with alerting drivers.
7th embodiment
Seventh embodiment of the invention discloses a kind of battery temperature and determines system, is used for electric vehicle.The battery is generally electricity
The power accumulator of motor-car.As shown in fig. 7, the battery temperature determines that system includes:
Receiving module 701, for receiving present frame battery temperature signal.
Module 702 is obtained, for according to present frame battery temperature signal, obtaining the mean temperature, most of the battery of present frame
High-temperature and minimum temperature.
First determining module 703, for the average temperature according to the battery of the mean temperature and former frame of the battery of present frame
The height relationship of degree, determines the changing pattern of battery temperature.
Second determining module 704, for determining that battery temperature is the average temperature of the battery of present frame according to changing pattern
Degree, maximum temperature or minimum temperature.
Preferably, as shown in figure 8, first determining module 703 includes:
First Comparative sub-module 7031, for comparing being averaged for the mean temperature of the battery of present frame and the battery of former frame
Temperature.
First determines submodule 7032, if the mean temperature of the battery for present frame is than the average temperature of the battery of former frame
Degree is high, it is determined that the changing pattern of battery temperature is first mode.
Second determines submodule 7033, if the mean temperature of the battery for present frame is than the average temperature of the battery of former frame
It spends low, it is determined that the changing pattern of battery temperature is second mode.
Third determines submodule 7034, if the average temperature of the battery of the mean temperature and former frame of the battery for present frame
It spends identical, it is determined that the changing pattern of battery temperature is the third mode.
Second determining module 704 includes:
Second Comparative sub-module 7041, for when the changing pattern of battery temperature be first mode when, by the electricity of present frame
The mean temperature in pond is respectively compared with the first calibration value of first mode and the second calibration value.
4th determines submodule 7042, if the mean temperature of the battery for present frame is lower than the first calibration value, it is determined that
Battery temperature is the minimum temperature of the battery of present frame.
5th determines submodule 7043, if the mean temperature of the battery for present frame is not less than the first calibration value and is lower than
Second calibration value, it is determined that battery temperature is the mean temperature of the battery of present frame.
6th determines submodule 7044, if the mean temperature of the battery for present frame is not less than the second calibration value, really
Determine the maximum temperature for the battery that battery temperature is present frame.
Wherein, the first calibration value is lower than the second calibration value.
Second determining module 704 further include:
Third Comparative sub-module 7045, for when the changing pattern of battery temperature be second mode when, by the electricity of present frame
The mean temperature in pond is respectively compared with the third calibration value of second mode and the 4th calibration value.
7th determines submodule 7046, if the mean temperature of the battery for present frame is not higher than third calibration value, really
Determine the minimum temperature for the battery that battery temperature is present frame.
8th determines submodule 7047, if the mean temperature of the battery for present frame is higher than third calibration value and is not higher than
4th calibration value, it is determined that battery temperature is the mean temperature of the battery of present frame.
9th determines submodule 7048, if the mean temperature of the battery for present frame is higher than the 4th calibration value, it is determined that
Battery temperature is the maximum temperature of the battery of present frame.
Wherein, third calibration value is less than the 4th calibration value.
Second determining module 704 further include:
Tenth determines submodule 7049, for determining battery temperature when the changing pattern of battery temperature is the third mode
For the battery temperature of former frame.
Preferably, which determines that system further includes
Display module 705, for determining that battery temperature is mean temperature, maximum temperature or the lowest temperature of the battery of present frame
After the step of spending, by the position of determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
Preferably, which determines system further include:
First judgment module 706, for obtaining the average temperature of the battery of present frame according to present frame battery temperature signal
After the step of degree, maximum temperature and minimum temperature, judge whether the minimum temperature of the battery of present frame is lower than the first limit value,
And whether the maximum temperature of the battery of present frame is higher than the second limit value.
First alarm module 707 issues low temperature if the minimum temperature of the battery for present frame is lower than the first limit value
Alarm.
Second alarm module 708 issues high temperature if the maximum temperature of the battery for present frame is higher than the second limit value
Alarm.
Wherein, the first limit value is lower than the second limit value.
Preferably, which determines system further include:
Second judgment module 709, for the average temperature according to the battery of the mean temperature and former frame of the battery of present frame
The height relationship of degree judges whether present frame battery temperature signal is before the step of determining the changing pattern of battery temperature
One frame battery temperature signal.
Third determining module 710, if being first frame battery temperature signal for present frame battery temperature signal, it is determined that electricity
The changing pattern of pond temperature is first mode；
If present frame battery temperature signal is not first frame battery temperature signal, the first determining module 703 is according to current
The height relationship of the mean temperature of the mean temperature and former frame of frame, determines the changing pattern of battery temperature.
Battery temperature of the present invention determines that system and above-mentioned battery temperature determine method institute compared with the existing technology
Have the advantage that identical, details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of battery temperature determines method, it is used for electric vehicle, which is characterized in that the battery temperature to determine that method includes:
Receive present frame battery temperature signal；
According to the present frame battery temperature signal, the mean temperature of the battery of the present frame, maximum temperature and minimum are obtained
Temperature；
According to the height relationship of the mean temperature of the battery of the mean temperature of the battery of the present frame and former frame, battery is determined
The changing pattern of temperature；
According to the changing pattern, determine mean temperature, maximum temperature that the battery temperature is the battery of the present frame or
Minimum temperature.
2. battery temperature according to claim 1 determines method, which is characterized in that the battery according to the present frame
Mean temperature and former frame battery mean temperature height relationship, the step of determining the changing pattern of battery temperature, packet
It includes:
Compare the mean temperature of the mean temperature of the battery of the present frame and the battery of the former frame；
If the mean temperature of the battery of the present frame is higher than the mean temperature of the battery of the former frame, it is determined that the battery
The changing pattern of temperature is first mode；
If the mean temperature of the battery of the present frame is lower than the mean temperature of the battery of the former frame, it is determined that the battery
The changing pattern of temperature is second mode；
If the mean temperature of the battery of the present frame is identical as the mean temperature of the battery of the former frame, it is determined that the electricity
The changing pattern of pond temperature is the third mode.
3. battery temperature according to claim 2 determines method, which is characterized in that the battery according to the present frame
Mean temperature and former frame battery mean temperature height relationship, the step of determining the changing pattern of battery temperature it
Before, the method also includes:
Judge whether the present frame battery temperature signal is first frame battery temperature signal；
If the present frame battery temperature signal is the first frame battery temperature signal, it is determined that the variation of the battery temperature
Mode is the first mode；
If the present frame battery temperature signal is not the first frame battery temperature signal, according to the battery of the present frame
Mean temperature and former frame battery mean temperature height relationship, determine the changing pattern of battery temperature.
4. battery temperature according to claim 2 determines method, which is characterized in that it is described according to the changing pattern, really
The step of fixed battery temperature is the mean temperature, maximum temperature or minimum temperature of the battery of the present frame, comprising:
When the changing pattern of the battery temperature be first mode when, by the mean temperature of the battery of the present frame respectively with institute
The first calibration value and the second calibration value for stating first mode compare；
If the mean temperature of the battery of the present frame is lower than first calibration value, it is determined that the battery temperature is described works as
The minimum temperature of the battery of previous frame；
If the mean temperature of the battery of the present frame is not less than first calibration value and is lower than second calibration value, really
The fixed battery temperature is the mean temperature of the battery of the present frame；
If the mean temperature of the battery of the present frame is not less than second calibration value, it is determined that the battery temperature is described
The maximum temperature of the battery of present frame；
Wherein, first calibration value is lower than second calibration value.
5. battery temperature according to claim 2 determines method, which is characterized in that it is described according to the changing pattern, really
The step of fixed battery temperature is the mean temperature, maximum temperature or minimum temperature of the battery of the present frame, further includes:
When the changing pattern of the battery temperature be second mode when, by the mean temperature of the battery of the present frame respectively with institute
The third calibration value and the 4th calibration value for stating second mode compare；
If the mean temperature of the battery of the present frame is not higher than the third calibration value, it is determined that the battery temperature is described
The minimum temperature of the battery of present frame；
If the mean temperature of the battery of the present frame is higher than the third calibration value and is not higher than the 4th calibration value, really
The fixed battery temperature is the mean temperature of the battery of the present frame；
If the mean temperature of the present frame is higher than the 4th calibration value, it is determined that the battery temperature is the present frame
The maximum temperature of battery；
Wherein, the third calibration value is less than the 4th calibration value.
6. battery temperature according to claim 2 determines method, which is characterized in that it is described according to the changing pattern, really
The step of fixed battery temperature is the mean temperature, maximum temperature or minimum temperature of the battery of the present frame, further includes:
When the changing pattern of the battery temperature is the third mode, determine that the battery temperature is the battery temperature of former frame.
7. battery temperature according to claim 1 determines method, which is characterized in that described according to the present frame battery temperature
After the step of spending signal, obtaining the mean temperature, maximum temperature and minimum temperature of the battery of the present frame, the method is also
Include:
Judge whether the minimum temperature of the battery of the present frame is lower than the battery of the first limit value and the present frame most
Whether high-temperature is higher than the second limit value；
If the minimum temperature of the battery of the present frame is lower than first limit value, low-temperature warning is issued；
If the maximum temperature of the battery of the present frame is higher than second limit value, high temperature alarm is issued；
Wherein, first limit value is lower than second limit value.
8. battery temperature according to claim 1 determines method, which is characterized in that the determining battery temperature is described works as
After the step of mean temperature of the battery of previous frame, maximum temperature or minimum temperature, the method also includes:
By the position of the determining battery temperature corresponding in the beat of pointer to instrument board of instrument board.
9. a kind of battery temperature determines system, it is used for electric vehicle, which is characterized in that the battery temperature to determine that system includes:
Receiving module, for receiving present frame battery temperature signal；
Module is obtained, for according to the present frame battery temperature signal, obtaining the mean temperature, most of the battery of the present frame
High-temperature and minimum temperature；
First determining module, for according to the mean temperature of the battery of the mean temperature and former frame of the battery of the present frame
Height relationship determines the changing pattern of battery temperature；
Second determining module, for determining that the battery temperature is the flat of the battery of the present frame according to the changing pattern
Equal temperature, maximum temperature or minimum temperature.
10. battery temperature according to claim 9 determines system, which is characterized in that further include:
First judgment module obtains the flat of the battery of the present frame for described according to the present frame battery temperature signal
After the step of equal temperature, maximum temperature and minimum temperature, judge whether the minimum temperature of the battery of the present frame is lower than the
Whether the maximum temperature of the battery of one limit value and the present frame is higher than the second limit value；
First alarm module issues low if the minimum temperature of the battery for the present frame is lower than first limit value
Temperature alarm；
Second alarm module issues height if the maximum temperature of the battery for the present frame is higher than second limit value
Temperature alarm；
Wherein, first limit value is lower than second limit value.
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