CN110416641A - Battery pack overheat protector control method, device, storage medium and controller - Google Patents
Battery pack overheat protector control method, device, storage medium and controller Download PDFInfo
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- CN110416641A CN110416641A CN201910652844.7A CN201910652844A CN110416641A CN 110416641 A CN110416641 A CN 110416641A CN 201910652844 A CN201910652844 A CN 201910652844A CN 110416641 A CN110416641 A CN 110416641A
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- Prior art keywords
- battery pack
- battery
- temperature
- internal resistance
- overheat protector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- 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
- H01M10/48—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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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 Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
Abstract
The invention proposes a kind of battery pack overheat protector control method, device, storage medium and controllers, this method comprises: the environment temperature of detection battery pack present position；Under the battery pack working condition, the running parameter of the battery pack is detected；The internal temperature of the battery pack is calculated according to the running parameter of the battery pack；It is modified according to internal temperature of the environment temperature to the battery pack, obtains the actual temperature of the battery pack；When the actual temperature of the battery pack is greater than or equal to preset temperature threshold, overheat protector operation is executed.The present invention can accurately detect the real time temperature of battery pack, and can provide overheat protector in time, prevent battery from causing danger because of overheat.
Description
Technical field
The present invention relates to battery protection technical field more particularly to a kind of battery pack overheat protector control method, device, deposit
Storage media and controller.
Background technique
The Normal practice of current battery protection is all to arrange that one or more temperature sensors are used in battery surface
The real time temperature for detecting battery pack is switched off output or input when detecting that real time temperature is more than setting value.But this side
What method only detected is battery surface temperature, and not close or two there may be being bonded between temperature sensor and battery pack
There are problems that insulated hull barrier between person, the battery surface temperature and actual surface temperature detected in this way all can exist compared with
Big error.
When battery pack is inconsistent so that battery pack as the increase of access times can have degree of aging between battery pack
Between the different situation of internal resistance.The case where being used in series if it is battery pack, then can have Individual cells group temperature higher than it
Its battery pack such as cannot accurately detect the battery pack temperature at this time, it is more likely that will lead to battery pack overheat and endanger
Danger.
Summary of the invention
The embodiment of the present invention proposes a kind of battery pack overheat protector control method, device, storage medium and controller, with
It solves the problem of accurately detect battery pack temperature in the prior art and then battery pack is caused to overheat and cause danger.
The embodiment of the invention provides a kind of battery pack overheat protector control methods, which comprises
Detect the environment temperature of battery pack present position；
Under the battery pack working condition, the running parameter of the battery pack is detected；
The internal temperature of the battery pack is calculated according to the running parameter of the battery pack；
It is modified according to internal temperature of the environment temperature to the battery pack, obtains the practical temperature of the battery pack
Degree；
When the actual temperature of the battery pack is greater than or equal to preset temperature threshold, overheat protector operation is executed.
Optionally, the running parameter includes the operating voltage, operating current and cumulative operation time of the battery pack；
The running parameter according to the battery pack calculates the internal temperature of the battery pack, comprising:
The open-circuit voltage for obtaining the battery pack, according to the open-circuit voltage of the battery pack, operating voltage and operating current,
Determine the internal resistance value of the battery pack；
The internal resistance fever of the battery pack is calculated according to the internal resistance value, operating current and cumulative operation time of the battery pack
Amount；
The internal temperature of the battery pack is calculated according to the default thermal resistance value of the internal resistance calorific value and the battery pack.
Optionally, the method also includes:
Under battery pack off working state, the open-circuit voltage of the battery pack is detected in advance and is stored.
Optionally, the running parameter includes the operating voltage, operating current of each battery cell and tired in the battery pack
Count the working time；
The running parameter according to the battery pack calculates the internal temperature of the battery pack, comprising:
The open-circuit voltage for obtaining each battery cell in the battery pack, according to the open-circuit voltage of each battery cell, work
Voltage and operating current determine the internal resistance value of corresponding battery cell；
The internal resistance hair of corresponding battery cell is calculated according to the internal resistance value, operating current and cumulative operation time of each battery cell
Heat；
Each battery list is calculated according to the default thermal resistance value of the internal resistance calorific value of each battery cell and corresponding battery cell
The internal temperature of body.
Optionally, the method also includes:
Under battery pack off working state, the open-circuit voltage of each battery cell of the battery pack is detected in advance and is deposited
Storage.
Optionally, the execution overheat protector operation, comprising:
Open pile cooling；And/or
Cut off the connection of the battery pack and input power or output loading.
Another embodiment of the present invention provides a kind of battery pack overheat protector control device, described device includes:
First detection module, for detecting the environment temperature of battery pack present position；
Second detection module, for detecting the running parameter of the battery pack under the battery pack working condition；
Computing module, for calculating the internal temperature of the battery pack according to the running parameter of the battery pack；
Correction module obtains described for being modified according to internal temperature of the environment temperature to the battery pack
The actual temperature of battery pack；
Control module, for executing excess temperature when the actual temperature of the battery pack is greater than or equal to preset temperature threshold
Protection operation.
Optionally, the running parameter includes the operating voltage, operating current and cumulative operation time of the battery pack；
The computing module, specifically for obtaining the open-circuit voltage of the battery pack, according to the open circuit of battery pack electricity
Pressure, operating voltage and operating current, determine the internal resistance value of the battery pack；According to the internal resistance value of the battery pack, operating current
The internal resistance calorific value of the battery pack is calculated with cumulative operation time；According to the pre- of the internal resistance calorific value and the battery pack
If thermal resistance value calculates the internal temperature of the battery pack.
Further, second detection module, is also used under battery pack off working state, detects the battery in advance
The open-circuit voltage of group is simultaneously stored.
Optionally, the running parameter includes the operating voltage, operating current of each battery cell and tired in the battery pack
Count the working time；
The computing module, specifically for obtaining the open-circuit voltage of each battery cell in the battery pack, according to each electricity
Open-circuit voltage, operating voltage and the operating current of pond monomer determine the internal resistance value of corresponding battery cell；According to each battery cell
Internal resistance value, operating current and cumulative operation time calculate the internal resistance calorific value of corresponding battery cell；According in each battery cell
The default thermal resistance value of resistance calorific value and corresponding battery cell calculates the internal temperature of each battery cell.
Further, second detection module, is also used under battery pack off working state, detects the battery in advance
The open-circuit voltage of each battery cell of group is simultaneously stored.
Optionally, the control module is specifically used for opening pile cooling；And/or cut off the battery pack with
The connection of input power or output loading.
In addition, it is stored thereon with computer program the present invention also provides a kind of computer readable storage medium, the program
The step of method as described above is realized when being executed by processor.
In addition, the present invention also provides a kind of controller, including memory, processor and storage are on a memory and can be
The step of computer program run on processor, the processor realizes method as described above when executing described program.
Battery pack overheat protector control method, device, storage medium and controller provided in an embodiment of the present invention, pass through inspection
The running parameter surveyed under battery pack working condition calculates the internal temperature of battery pack itself, further according to battery pack off working state
Lower local environment temperature is modified internal temperature, and then accurately obtains the actual temperature of internal battery pack, and utilizes the reality
Border temperature, when actual temperature is greater than or equal to preset temperature threshold, provides overheat protector compared with preset temperature threshold in time,
Prevent battery from causing danger because of overheat.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of flow diagram of battery pack overheat protector control method provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of battery pack overheat protector control device provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless otherwise will not be explained in an idealized or overly formal meaning by specific definitions.
Fig. 1 diagrammatically illustrates the flow chart of the battery pack overheat protector control method of one embodiment of the invention.Reference
Fig. 1, the battery pack overheat protector control method that the embodiment of the present invention proposes specifically include step S11~S15, as follows:
S11, the environment temperature for detecting battery pack present position.
Battery pack described in the present embodiment is made of one or more battery monomer, which can be a section, a piece of
Or one piece of battery, it is also possible to its parallel combination.
Specifically, can be by the way that one or more temperature sensors be arranged for detecting battery pack institute in battery pack any position
The environment temperature at place.In a specific embodiment, it is influenced to guarantee environment temperature not by battery pack self-heating, it can be with
The detection of environment temperature is carried out under battery pack off working state.
S12, under the battery pack working condition, detect the running parameter of the battery pack.
In the present embodiment, running parameter includes voltage, electric current, the parameters such as cumulative operation time.
Specifically, detecting the voltage or total voltage of each monomer of battery pack by setting voltage detecting circuit；It is logical
Cross the operating current that setting current detection circuit is used to detect battery pack；When by the way that cumulative activation of the timer to battery pack is arranged
Between recorded.
S13, the internal temperature that the battery pack is calculated according to the running parameter of the battery pack；
S14, it is modified according to internal temperature of the environment temperature to the battery pack, obtains the reality of the battery pack
Border temperature；
S15, when the actual temperature of the battery pack be greater than or equal to preset temperature threshold when, execute overheat protector operation.
In the present embodiment, overheat protector operation may include opening pile cooling；And/or the cutting battery
Group and the connection of input power or output loading etc. operate, to realize the overheat protector to battery.
Battery pack overheat protector control method provided in an embodiment of the present invention passes through the work under detection battery pack working condition
The internal temperature that battery pack itself is calculated as parameter, further according to local environment temperature under battery pack off working state to internal temperature
Degree is modified, and then accurately obtains the actual temperature of internal battery pack, and utilizes the actual temperature and preset temperature threshold ratio
Compared with, when actual temperature be greater than or equal to preset temperature threshold when, overheat protector is provided in time, prevents battery from endangering because of overheat
Danger.
In a specific embodiment, the running parameter of the battery pack includes the work of each battery cell in the battery pack
Make voltage, operating current and cumulative operation time；Further, the running parameter of the detection battery pack, comprising: detection
The operating voltage and operating current of each battery cell in the battery pack, and carry out the timing of working time.
In the present embodiment, the internal temperature of the battery pack is calculated according to the running parameter of the battery pack, is specifically included:
The open-circuit voltage for obtaining each battery cell in the battery pack, according to the open-circuit voltage of each battery cell, operating voltage and work
Make electric current, determines the internal resistance value of corresponding battery cell；According to the internal resistance value, operating current and cumulative operation time of each battery cell
Calculate the internal resistance calorific value of corresponding battery cell；According to the internal resistance calorific value of each battery cell and correspond to the default of battery cell
Thermal resistance value calculates the internal temperature of each battery cell.
It wherein, further include the open circuit electricity for detecting each battery cell of the battery pack in advance under battery pack off working state
It presses and is stored, with the calculating of the internal resistance value for further battery monomer.
Operating voltage meter in the present embodiment, when starting to work according to the open-circuit voltage before the start-up operation of each monomer and just
The internal resistance pressure drop of each monomer is calculated, opening after the operating voltage and work before terminating of can also working according to each monomer
Road voltage calculates the internal resistance pressure drop of each monomer, and computation model is as follows:
Internal resistance pressure drop=monomer open-circuit voltage-monomer operating voltage；
Then, the internal resistance value of each monomer is calculated according to the operating current relationship of internal resistance pressure drop and battery pack, calculates mould
Type is as follows:
Internal resistance value=internal resistance pressure drop/battery pack operating current；
Each monomer can be calculated using the relationship of the internal resistance value of each monomer, battery pack real-time working electric current and time
Calorific value, computation model is as follows:
W=I^2*R*t；
Wherein: W is calorific value；I is operating current；R is battery cell internal resistance；T is battery working time；
The environment temperature according to locating for battery pack can calculate the inside real time temperature of each monomer, specifically, first
The inside temperature of each battery cell is calculated according to the default thermal resistance value of the internal resistance calorific value of battery cell and corresponding battery cell
W*J is spent, is then modified according to internal temperature of the environment temperature to battery pack, obtains the actual temperature of the battery pack, is counted
It is as follows to calculate model:
Tc=T0+W*J
Wherein, Tc is internal temperature of battery；T0 is environment temperature；W is battery cell internal resistance calorific value；J is battery thermal resistance；
Thermal resistance is also known as thermal resistivity, is the obstruction ability that Heat Conduction Material conducts heat, the thermal resistivity of Heat Conduction Material
Bigger, then it is stronger to the obstruction ability of heat transfer.
The internal temperature of each battery cell of battery pack is compared with the temperature threshold of setting respectively, when a certain battery cell
Internal temperature be greater than or equal to preset temperature threshold when, execute overheat protector operation, thus timely and accurately to battery pack
Realize overheat protector.
In another specific embodiment, the running parameter of the battery pack includes the operating voltage of the battery pack, work
Make electric current and cumulative operation time；Further, the running parameter of the detection battery pack, comprising: detect the battery
The operating voltage and operating current of group, and carry out the timing of working time.
In the present embodiment, the internal temperature of the battery pack is calculated according to the running parameter of the battery pack, is specifically included:
The open-circuit voltage for obtaining the battery pack, according to the open-circuit voltage of the battery pack, operating voltage and operating current, determine described in
The internal resistance value of battery pack；The battery pack is calculated according to the internal resistance value, operating current and cumulative operation time of the battery pack
Internal resistance calorific value；The inside temperature of the battery pack is calculated according to the default thermal resistance value of the internal resistance calorific value and the battery pack
Degree.
It wherein, further include detecting the open-circuit voltage of the battery pack in advance and being deposited under battery pack off working state
Storage, with the calculating of the internal resistance value for further battery group.
The present embodiment, the voltage that will test each monomer are changed to the total voltage of detection battery pack, and other detection modes are protected
It holds consistent.The total internal resistance of battery pack is calculated using the total internal resistance pressure difference of battery pack and operating current, further according to the meter of optimum embodiment
Calculation method calculates internal battery pack temperature.
The embodiment of the present invention detects environment temperature locating for battery pack by temperature sensor, and passes through detection circuit
Internal resistance and the real-time current for detecting every batteries, calculate according to the relationship of the internal resistance of every batteries and real-time current and time
The self-heating amount of every batteries can calculate the actual temperature inside every batteries further according to battery local environment temperature,
Using the temperature value compared with preset temperature protection value, to timely and accurately realize overheat protector to battery.
For embodiment of the method, for simple description, therefore, it is stated as a series of action combinations, but this field
Technical staff should be aware of, and embodiment of that present invention are not limited by the describe sequence of actions, because implementing according to the present invention
Example, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, specification
Described in embodiment belong to preferred embodiment, the actions involved are not necessarily necessary for embodiments of the present invention.
Fig. 2 diagrammatically illustrates the structural schematic diagram of the battery pack overheat protector control device of one embodiment of the invention.
Referring to Fig. 2, the battery pack overheat protector control device of the embodiment of the present invention specifically includes the detection of first detection module 201, second
Module 202, computing module 203, correction module 204 and control module 205, in which:
First detection module 201, for detecting the environment temperature of battery pack present position；
Second detection module 202, for detecting the running parameter of the battery pack under the battery pack working condition；
Computing module 203, for calculating the internal temperature of the battery pack according to the running parameter of the battery pack；
Correction module 204 obtains institute for being modified according to internal temperature of the environment temperature to the battery pack
State the actual temperature of battery pack；
Control module 205, for executing when the actual temperature of the battery pack is greater than or equal to preset temperature threshold
Temperature protection operation.
In the present embodiment, the control module 205 is specifically used for opening pile cooling；And/or described in cutting
The connection of battery pack and input power or output loading.
In embodiments of the present invention, the running parameter includes the operating voltage, operating current of the battery pack and adds up
Working time.
The computing module 203, specifically for obtaining the open-circuit voltage of the battery pack, according to the open circuit of the battery pack
Voltage, operating voltage and operating current determine the internal resistance value of the battery pack；According to the internal resistance value of the battery pack, work electricity
Stream and cumulative operation time calculate the internal resistance calorific value of the battery pack；According to the internal resistance calorific value and the battery pack
Default thermal resistance value calculates the internal temperature of the battery pack.
Further, second detection module 202, is also used under battery pack off working state, in advance described in detection
The open-circuit voltage of battery pack is simultaneously stored.
In an alternative embodiment of the invention, the running parameter includes the work electricity of each battery cell in the battery pack
Pressure, operating current and cumulative operation time.
The computing module 203, specifically for obtaining the open-circuit voltage of each battery cell in the battery pack, according to each
Open-circuit voltage, operating voltage and the operating current of battery cell determine the internal resistance value of corresponding battery cell；According to each battery cell
Internal resistance value, operating current and cumulative operation time calculate the internal resistance calorific value of corresponding battery cell；According to each battery cell
The default thermal resistance value of internal resistance calorific value and corresponding battery cell calculates the internal temperature of each battery cell；Calculate each battery list
The mean temperature of the internal temperature of body, using the mean temperature as the internal temperature of the battery pack.
Further, second detection module 202, is also used under battery pack off working state, in advance described in detection
The open-circuit voltage of each battery cell of battery pack is simultaneously stored.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Battery pack overheat protector control method provided in an embodiment of the present invention, device pass through detection battery pack working condition
Under running parameter calculate the internal temperature of battery pack itself, further according to local environment temperature pair under battery pack off working state
Internal temperature is modified, and then accurately obtains the actual temperature of internal battery pack, and utilizes the actual temperature and preset temperature
Threshold value comparison provides overheat protector in time, prevents battery due to overheat when actual temperature is greater than or equal to preset temperature threshold
It causes danger.
In addition, it is stored thereon with computer program the embodiment of the invention also provides a kind of computer readable storage medium,
The step of program realizes method as described above when being executed by processor.
In the present embodiment, if module/unit that the battery pack overheat protector control device integrates is with software function list
Member form realize and when sold or used as an independent product, can store in a computer-readable storage medium
In.Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through computer
Program is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium, should
Computer program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program
Including computer program code, the computer program code can be source code form, object identification code form, executable file
Or certain intermediate forms etc..The computer-readable medium may include: can carry the computer program code any
Entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and
Software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be according in jurisdiction
Legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent practice, meter
Calculation machine readable medium does not include electric carrier signal and telecommunication signal.
Controller provided in an embodiment of the present invention, including memory, processor and storage on a memory and can handled
The computer program run on device, the processor realize above-mentioned each battery pack overheat protector when executing the computer program
Step in control method embodiment, such as S11~S15 shown in FIG. 1.Alternatively, the processor executes the computer journey
The function of each module/unit in above-mentioned each battery pack overheat protector control device embodiment, such as shown in Fig. 2 are realized when sequence
One detection module 201, the second detection module 202, computing module 203, correction module 204 and control module 205.
Illustratively, the computer program can be divided into one or more module/units, one or more
A module/unit is stored in the memory, and is executed by the processor, to complete the present invention.It is one or more
A module/unit can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing institute
State implementation procedure of the computer program in the battery pack overheat protector control device.For example, the computer program can be with
It is divided into first detection module 201, the second detection module 202, computing module 203, correction module 204 and control module
205。
The controller may include, but be not limited only to, processor, memory.It will be understood by those skilled in the art that this reality
Applying the controller in example may include more or fewer components, perhaps combine certain components or different components, such as institute
Stating controller can also include input-output equipment, network access equipment, bus etc..
The processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor is the control centre of the controller, utilizes each portion of various interfaces and the entire controller of connection
Point.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
The various functions of controller.The memory can mainly include storing program area and storage data area, wherein storing program area can
Application program needed for storage program area, at least one function (such as sound-playing function, image player function etc.) etc.；It deposits
Storage data field, which can be stored, uses created data (such as audio data, phone directory etc.) etc. according to mobile phone.In addition, memory
It may include high-speed random access memory, can also include nonvolatile memory, such as hard disk, memory, plug-in type hard disk,
Intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash
Card), at least one disk memory, flush memory device or other volatile solid-state parts.
It will be appreciated by those of skill in the art that although some embodiments in this include included in other embodiments
Certain features rather than other feature, but the combination of the feature of different embodiments means to be within the scope of the present invention simultaneously
And form different embodiments.For example, in the following claims, the one of any of embodiment claimed all may be used
Come in a manner of in any combination using.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of battery pack overheat protector control method, which is characterized in that the described method includes:
Detect the environment temperature of battery pack present position；
Under the battery pack working condition, the running parameter of the battery pack is detected；
The internal temperature of the battery pack is calculated according to the running parameter of the battery pack；
It is modified according to internal temperature of the environment temperature to the battery pack, obtains the actual temperature of the battery pack；
When the actual temperature of the battery pack is greater than or equal to preset temperature threshold, overheat protector operation is executed.
2. battery pack overheat protector control method as described in claim 1, which is characterized in that the running parameter includes described
The operating voltage, operating current and cumulative operation time of battery pack；
The running parameter according to the battery pack calculates the internal temperature of the battery pack, comprising:
The open-circuit voltage for obtaining the battery pack is determined according to the open-circuit voltage of the battery pack, operating voltage and operating current
The internal resistance value of the battery pack；
The internal resistance calorific value of the battery pack is calculated according to the internal resistance value, operating current and cumulative operation time of the battery pack；
The internal temperature of the battery pack is calculated according to the default thermal resistance value of the internal resistance calorific value and the battery pack.
3. battery pack overheat protector control method as claimed in claim 2, which is characterized in that the method also includes:
Under battery pack off working state, the open-circuit voltage of the battery pack is detected in advance and is stored.
4. battery pack overheat protector control method as described in claim 1, which is characterized in that the running parameter includes described
The operating voltage, operating current and cumulative operation time of each battery cell in battery pack；
The running parameter according to the battery pack calculates the internal temperature of the battery pack, comprising:
The open-circuit voltage for obtaining each battery cell in the battery pack, according to the open-circuit voltage of each battery cell, operating voltage
And operating current, determine the internal resistance value of corresponding battery cell；
The internal resistance fever of corresponding battery cell is calculated according to the internal resistance value, operating current and cumulative operation time of each battery cell
Amount；
Each battery cell is calculated according to the default thermal resistance value of the internal resistance calorific value of each battery cell and corresponding battery cell
Internal temperature.
5. battery pack overheat protector control method according to any one of claims 1-4, which is characterized in that the execution excess temperature
Protection operation, comprising:
Open pile cooling；And/or
Cut off the connection of the battery pack and input power or output loading.
6. a kind of battery pack overheat protector control device, which is characterized in that described device includes:
First detection module, for detecting the environment temperature of battery pack present position；
Second detection module, for detecting the running parameter of the battery pack under the battery pack working condition；
Computing module, for calculating the internal temperature of the battery pack according to the running parameter of the battery pack；
Correction module obtains the battery for being modified according to internal temperature of the environment temperature to the battery pack
The actual temperature of group；
Control module, for executing overheat protector when the actual temperature of the battery pack is greater than or equal to preset temperature threshold
Operation.
7. battery pack overheat protector control device as claimed in claim 6, which is characterized in that the running parameter includes described
The operating voltage, operating current and cumulative operation time of battery pack；
The computing module, specifically for obtaining the open-circuit voltage of the battery pack, according to the open-circuit voltage of the battery pack, work
Make voltage and operating current, determines the internal resistance value of the battery pack；According to the internal resistance value of the battery pack, operating current and add up
Working time calculates the internal resistance calorific value of the battery pack；According to the internal resistance calorific value and the default thermal resistance of the battery pack
Value calculates the internal temperature of the battery pack.
8. battery pack overheat protector control device as claimed in claim 6, which is characterized in that the running parameter includes described
The operating voltage, operating current and cumulative operation time of each battery cell in battery pack；
The computing module, specifically for obtaining the open-circuit voltage of each battery cell in the battery pack, according to each battery list
Open-circuit voltage, operating voltage and the operating current of body determine the internal resistance value of corresponding battery cell；According to the internal resistance of each battery cell
Value, operating current and cumulative operation time calculate the internal resistance calorific value of corresponding battery cell；It is sent out according to the internal resistance of each battery cell
The default thermal resistance value of heat and corresponding battery cell calculates the internal temperature of each battery cell.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
It is realized when row such as the step of any one of claim 1-5 the method.
10. a kind of controller, which is characterized in that memory, processor and storage can be run on a memory and on a processor
Computer program, which is characterized in that the processor is realized as described in claim any one of 1-5 just when executing described program
The step of method.
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