CN109543305A - A kind of analog detection method of the Vehicular battery packet crush resistance based on CAE - Google Patents
A kind of analog detection method of the Vehicular battery packet crush resistance based on CAE Download PDFInfo
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Abstract
The crush resistance analog detection method of the present invention relates to a kind of Vehicular battery packet based on CAE, this method comprises: building virtual battery packet, virtual test place and pressure tool；The corresponding position relationship of simulation virtual battery packet, virtual test place and virtual pressure tool is required according to actual test, and virtual pressure tool is controlled according to actual test condition, virtual battery packet is squeezed, it is displaced virtual battery packet relative to virtual test place；Extruding force and extrusion and displacement are calculated in real time, judge when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement, whether the crush resistance of virtual battery packet meets preset condition, if meeting, then storage battery packet initial parameter designs battery pack as battery pack design parameter.Method of the invention is avoided the risk that battery pack is exploded in actual test, reduces the cost that battery pack squeezes test by CAE analogue simulation without expending a large amount of manpower and material resources.
Description
Technical field
The present invention relates to Vehicular battery packet performance detection technical field more particularly to a kind of Vehicular battery packets based on CAE
The analog detection method of crush resistance.
Background technique
Pith of the battery pack as new-energy automobile, security performance is particularly significant, and crush resistance can be then as electricity
The important evaluation content of one of Chi Bao.The crush resistance of battery pack can be detected by test, in test, pass through semi-cylindrical
Extruded rod, is X to squeezing and Y-direction squeezes respectively, when extruding force reaches 100kN or extrusion deformation degree reaches direction of extrusion entirety
Size 30% when stop squeeze, observe the extruding situation of battery pack, it is desirable that battery pack without explosion, Ignition Phenomena.
In battery pack structure design process, through a large number of experiments carry out technique optimization can expend a large amount of manpower with
Material resources, the cost for carrying out the extruding test of one-shot battery packet is very high, and simultaneous risk.
Accordingly, it is desirable to provide a kind of analog detection method of the Vehicular battery packet crush resistance based on CAE.
Summary of the invention
The analog detection method for the Vehicular battery packet crush resistance based on CAE that the purpose of the present invention is to provide a kind of, it is right
It is emulated in Vehicular battery packet in the deformation that side squeezes, the integrally-built intensity of battery pack, pressure-resistant degree is evaluated,
Reduce the testing cost of battery pack design.
According to an aspect of the present invention, a kind of crush resistance simulation test side of Vehicular battery packet based on CAE is provided
Method, comprising the following steps:
Virtual battery packet is constructed according to battery pack initial parameter, is constructed according to crush resistance test site actual parameter virtual
Test site, according to the virtual pressure tool of pressure tool actual parameter building；
The corresponding position of simulation virtual battery packet, virtual test place and virtual pressure tool is required to close according to actual test
System, and virtual pressure tool is controlled according to actual test condition, virtual battery packet is squeezed, make virtual battery packet relative to
The displacement of virtual test place；
Virtual pressure tool is calculated in real time to the extruding force and virtual battery packet of virtual battery packet relative to virtual test field
The extrusion and displacement on ground judges when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement, virtual battery packet
Whether crush resistance meets preset condition, if satisfied, then storage battery packet initial parameter, designs electricity as battery pack design parameter
Chi Bao.
Further, the analog detection method of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: if virtual
The crush resistance of battery pack is unsatisfactory for preset condition, then adjusts battery pack initial parameter, until the crush resistance of virtual battery packet
Until meeting preset condition.
Further, the analog detection method of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: acquisition is squeezed
The relation curve of pressure and extrusion and displacement, and judge whether the relation curve meets the following conditions: in extruding force pre-set interval
Extruding force accounts for the 10%-40% in the total section of extruding force；If satisfied, then determining relation curve qualification.
Further, the analog detection method of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: if relationship
Curve is unqualified, then finds the estimation extrusion and displacement amount that extruding force reaches default extruding force, resurveys extruding force and squeezes position
The relation curve of shifting, the extrusion and displacement total length of the relation curve are set as estimation 1.5-2 times of extrusion and displacement amount, and check away from
Whether the point nearest from default extruding force in extruding force pre-set interval, if not existing, extract 2 times atom step as a result, if,
Then check that distance presets two nearest peak points of extruding force and two o'clock line is checked whether its slope absolute value is less thanIf big
InThen think that step evolution is excessive, then need for sub-step to be adjusted to original 2 times, until relation curve is qualified.
Further, the building of virtual battery packet is implemented as follows:
Import battery pack threedimensional model；
Define thickness, size and the material of each building block of battery pack；
Add the connection unit of each building block of battery pack.
Further, battery pack initial parameter includes the thickness and ruler of battery pack threedimensional model, each building block of battery pack
The connection unit of very little, material properties, each building block.
Further, it for the important power transmission position in battery pack threedimensional model, is carried out using practical connection unit model
Connection.
Further, virtual pressure tool is calculated to the extruding force and virtual battery packet of virtual battery packet using display algorithm
Extrusion and displacement relative to virtual test place.
Further, presetting extruding force is 100kN, and preset displacement is the 30% of the overall dimensions of the direction of extrusion, virtual electricity
The preset condition that the crush resistance of Chi Bao meets is that the battery modules inside battery pack are not affected by extruding.
According to another aspect of the present invention, a kind of computer readable storage medium is provided, computer journey is stored thereon with
Sequence, when which is executed by processor the step of the realization above method.
The invention has the benefit that
1. the analog detection method of the Vehicular battery packet crush resistance of the invention based on CAE is using CAE to battery pack
Crush resistance can be carried out analogue simulation, and judge when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement,
Whether the real-time parameter of battery pack finite element model meets preset condition, if satisfied, then storage battery packet initial parameter, as electricity
Pond packet design parameter designs battery pack, avoids practical survey without expending a large amount of manpower and material resources by CAE analogue simulation
The risk that battery pack is exploded in examination reduces the cost that battery pack squeezes test；
2. the analog detection method adjustment battery pack of the Vehicular battery packet crush resistance of the invention based on CAE is initially joined
Therefore number, can find battery pack structure design until the real-time parameter of battery pack finite element model meets preset condition
Present in defect, optimization battery pack structure design, reduce testing time, reduce testing cost, promoted design efficiency.
3. the analog detection method of the Vehicular battery packet crush resistance of the invention based on CAE is by drawing extruding force and squeezing
The relation curve of displacement is pressed, and judges whether the extraction of sub-step is reasonable according to the relation curve, so that measuring accuracy is high, and is surveyed
Examination is high.
Detailed description of the invention
Fig. 1 is the analog detection method block diagram of the Vehicular battery packet crush resistance of the invention based on CAE；
Fig. 2 is one schematic diagram of simulation test process of the Vehicular battery packet crush resistance of the invention based on CAE；
Fig. 3 is another schematic diagram of simulation test process of the Vehicular battery packet crush resistance of the invention based on CAE；
Fig. 4 is the analog detection method work flow diagram of the Vehicular battery packet crush resistance of the invention based on CAE；
Fig. 5 is the extruding force of primary Calculation and the curve synoptic diagram of extrusion and displacement；
Fig. 6 is the curve synoptic diagram of the extruding force and extrusion and displacement that finally calculate, i.e., effective result schematic diagram,
In the accompanying drawings, F- extruding force, X- vehicle traveling direction, for Y- perpendicular to the horizontal direction of driving direction, 1- is virtually electric
The virtual metope of Chi Bao, 2-, 3- virtual ground, the virtual pressure head of 4-, the virtual hangers of 5-, the virtual stabilizer blade of 6-.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Fig. 1 is the analog detection method block diagram of the Vehicular battery packet crush resistance of the invention based on CAE, such as Fig. 1 institute
Show, the Vehicular battery packet provided by the invention based on CAE (Computer Aided Engineering, computer-aided engineering)
The analog detection method of crush resistance, comprising the following steps:
Virtual battery packet is constructed according to battery pack initial parameter, is constructed according to crush resistance test site actual parameter virtual
Test site, according to the virtual pressure tool of pressure tool actual parameter building；
The corresponding position of simulation virtual battery packet, virtual test place and virtual pressure tool is required to close according to actual test
System, and virtual pressure tool is controlled according to actual test condition, virtual battery packet is squeezed, make virtual battery packet relative to
The displacement of virtual test place；
Virtual pressure tool is calculated in real time to the extruding force and virtual battery packet of virtual battery packet relative to virtual test field
The extrusion and displacement on ground judges when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement, virtual battery packet
Whether crush resistance meets preset condition, if satisfied, then storage battery packet initial parameter, designs electricity as battery pack design parameter
Chi Bao.Herein, storage battery packet initial parameter serves not only as battery pack design parameter design battery pack, and next time
When inputting battery pack initial parameter, it may directly learn that the battery pack initial parameter can be used as battery pack design parameter design electricity
Chi Bao, without being tested.
Wherein, virtual crush resistance testing tool can be the semicylinder of radius 75mm, but be no more than 1m, crush resistance
The direction of extrusion is vehicle traveling direction X in test process and the horizontal direction Y perpendicular to driving direction, the direction of extrusion are garage
When sailing direction X, as shown in Fig. 2, virtual pressure head 4 squeezes virtual battery packet 1 to virtual metope 2, virtual battery packet 1 is opposite for test
It is displaced in virtual ground 3, records extruding force and extrusion and displacement in real time.The direction of extrusion is the horizontal direction Y perpendicular to driving direction
When, test is as shown in figure 3, virtual pressure head 4 squeezes virtual battery packet 1 to virtual metope 2, and virtual battery packet 1 is relative to virtual
Ground 3 is displaced, and the virtual hangers 5 and virtual stabilizer blade 6 installed on virtual battery packet 1 are first subjected to extruding, records extruding force in real time
And extrusion and displacement.When default extruding force is 100kN, preset displacement is the 30% of the overall dimensions of the direction of extrusion, virtual battery packet
Crush resistance meet preset condition be battery pack inside battery modules be not affected by extrudings, specifically, Squeezing ground test
In the process, extruding force and extrusion and displacement are recorded in real time, and observation extruding force reaches 100kN and extrusion and displacement reaches the whole of the direction of extrusion
Which is first realized the 30% of body size, using the time point first realized as initial point, 10min is kept, during this period of time, in battery pack
The battery modules in portion are not affected by extruding.
Wherein, battery pack initial parameter includes battery pack threedimensional model, the thickness of each building block of battery pack and size, material
The connection unit for expecting attribute, each building block, it is single using practical connection for the important power transmission position in battery pack threedimensional model
Meta-model is attached.
The analog detection method of Vehicular battery packet crush resistance based on CAE of the invention resists battery pack using CAE
Extrusion performance carries out analogue simulation, and judges when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement, electricity
Whether the real-time parameter of pond packet finite element model meets preset condition, if satisfied, then storage battery packet initial parameter, as battery
Packet design parameter designs battery pack, avoids actual test without expending a large amount of manpower and material resources by CAE analogue simulation
The risk of middle battery pack explosion, reduces the cost that battery pack squeezes test.
Virtual pressure tool is calculated to the extruding force and virtual battery packet of virtual battery packet relative to void using display algorithm
The extrusion and displacement of quasi- test site can also use the computational efficiency of mass scaling display algorithm.The present invention is solved using display
It is more efficient than Implicit Method, because Implicit Method there are problems that restraining difficulty, very for the complicated nonlinear problem with contact
Difficult quickly convergence obtains calculated result, and showing to solve then can effectively solve the problems, such as this, in order to shorten the meter that display solves
Evaluation time can promote computational efficiency using mass scaling.
The building of virtual battery packet is implemented as follows:
Import battery pack threedimensional model；
Define thickness, size and the material of each building block of battery pack；
Add the connection unit of each building block of battery pack.
The analog detection method of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: acquisition extruding force and extruding
The relation curve of displacement, and judge whether the relation curve meets the following conditions: the extruding force in extruding force pre-set interval accounts for crowded
The 10%-40% in the total section of pressure；If satisfied, then determining relation curve qualification, if relation curve is unqualified, extruding is found
Power reaches the estimation extrusion and displacement amount of default extruding force, resurveys the relation curve of extruding force and extrusion and displacement, and the relationship is bent
The extrusion and displacement total length of line is set as 1.5-2 times of estimation extrusion and displacement amount, and checks that distance presets the nearest point of extruding force
Whether in extruding force pre-set interval, if not existing, 2 times of atom step is extracted as a result, if checking that distance presets extruding force
Two o'clock line is checked whether its slope absolute value is less than by two nearest peak pointsIf more thanThen think step evolution mistake
Greatly, then it needs for sub-step to be adjusted to original 2 times, until relation curve is qualified.
Referring to fig. 4, the analog detection method of the Vehicular battery packet crush resistance based on CAE of the present embodiment implements such as
Under:
Step 101: establishing battery pack finite element model, establish three Cartesian coordinates, so that the X-axis of three-dimensional system of coordinate
The driving direction of automobile where being parallel to battery pack, for Y-axis perpendicular to the horizontal direction of driving direction, Z axis is short transverse；
Step 102: setting battery pack housing, battery modules, all kinds of electronic apparatus, each connecting plate and branch according to practical structures
The size of frame structure, thickness, material；
Step 103: according to actual process, establish each interstructural connection relationship, including spot welding, carbon-dioxide arc welding,
It seam weld and is bolted；
Step 104: the outside setting of battery pack is used for the ground of placing battery packet, and bears the wall that battery pack squeezes
Face sets rigid body for ground and metope, and applies constraint, limits the translation freedoms in its 3 directions；
Step 105: laterally disposed semi- cylindrical pressure head is arranged in the outside of battery pack, and pressure head radius is 75mm, and length is not
More than 1m, pressure head center line is aligned the main pressurized zone center of battery pack, sets rigid body for cylindrical crimp, and applied
Add displacement constraint, it is made to move the 30% of battery pack direction length to the battery pack direction of extrusion；
Step 106: the reaction force of pressure head, i.e. extruding force are calculated and extracted using display algorithm, draws extruding force and position
The relation curve of shifting；
Step 107: judging whether calculated curve result meets the requirements, accounted for if calculated result is fallen in 100 ± 20KN of section
10% or less overall result, it is believed that the extraction of sub-step excessively it is sparse then, it is excessive to will cause error calculated；If calculated result is fallen
40% or more of overall result is accounted in 100 ± 20KN of section, if the extraction of calculated result sub-step is excessively intensive, when expending calculating
Between, reduce computational efficiency.
Step 108: according to simulation result is squeezed, evaluation can be carried out to the crush resistance of battery pack, evaluation result needs to meet
The following conditions are qualification, and when extruding force reaches 100KN, internal cell mould group is not affected by extruding.
Step 109: saving calculated result.
Wherein, in step 103, connection relationship has a huge impact computational solution precision, therefore should be according to actually connecting
Practical bolt model should be made and be connected for important power transmission position, such as mould group connecting plate by connecing state progress model treatment
It connects.
In step 106, it is solved using display than Implicit Method, it is more efficient, it is asked because Implicit Method has convergence difficulty
Topic is difficult quickly to restrain obtaining calculated result for the complicated nonlinear problem for having contact, and shows that solution then can be effective
It solves the problems, such as this, in order to shorten the calculating time that display solves, computational efficiency can be promoted using mass scaling.
In step 107, judgment curves are qualified, and the concrete mode for obtaining effective result is as follows: finding extruding force first and reaches
To the extrusion and displacement amount U-jy of 100KN, as shown in figure 5, setting the 1.5~2 of U-jy for the extrusion and displacement total length of the curve
Times, as shown in fig. 6, checking that the nearest point of distance 100KN whether in 100 ± 10KN of section, if exceeding section, extracts 2 times again
Atom step as a result, if in section, check that two o'clock line is checked that its slope is absolute by two nearest peak points of distance 100KN
Whether value is less thanIf more thanThen think that step evolution is excessive, then need again to be original 2 times by sub-step tune, so repeatedly step
105-107 in effective result points until fall within the scope of 100 ± 10KN.
By the extruding analogue simulation of battery pack, complete battery pack structure, connection relationship model are established, it can be to different ginsengs
The battery pack crush resistance of said conditions is evaluated.According to analogue simulation it is found that influencing battery pack crush resistance can essentially consist in
The welded case structure of battery pack, and internal connecting board structure, set off an explosion to avoid inside battery mould group from being squeezed,
Battery pack housing and inside link plate confrontation extrusion performance have very big influence, can pass through different sizes, thickness, material
Etc. parameters, improve the crush resistance energy of battery pack.In addition, the presence of battery pack stabilizer blade or hangers, which also fights extrusion performance, plays one
It is set for using, when the direction of extrusion is there are the effect that when stabilizer blade or hangers, can help to bear certain force in extrusion process, at this time can
Occur falling after rise suddenly in extrusion process extruding force uphill process, then rise once again, i.e., first by stabilizer blade or hangers load, later
With cabinet shared extruding force.Therefore, battery pack side is squeezed by CAE analysis and is simulated, battery pack can resisted
Squeezing ground obtains theoretical evaluation as a result, part object test can be replaced, and reduces the testing cost in design process, and saving was developed
Design time in journey.
The analog detection method of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: if virtual battery packet is anti-
Squeezing ground is unsatisfactory for preset condition, then adjusts battery pack initial parameter, until the crush resistance of virtual battery packet meets default item
Until part.Specifically, if the crush resistance of virtual battery packet is unsatisfactory for preset condition, reset battery pack welded case or
The size of inside link plate, thickness, one or several parameters in material, and repeat battery pack and squeeze test.
The analog detection method of Vehicular battery packet crush resistance based on CAE of the invention adjusts battery pack initial parameter,
Until the crush resistance of virtual battery packet meets preset condition, therefore, it can find present in battery pack structure design
Defect, optimization battery pack structure design, reduces testing time, reduces testing cost, promote design efficiency.
Therefore, the analog detection method of the Vehicular battery packet crush resistance provided by the invention based on CAE, it is whole to battery pack
Body structure and connection status are modeled, and are squeezed battery pack side and are emulated, and illustrate the method for obtaining effective result, from
And computational accuracy is improved, obtain the evaluation result of battery pack crush resistance energy；When evaluation result is unsatisfactory for requiring, using to whole
Body structure influences ascending parameter change, improves the crush resistance energy of battery pack, so that in entire design process, it can
It is quickly found out design defect, optimization design, and reduces testing time, reduces design cost.
What it is the present invention also provides a kind of analog detection method of Vehicular battery packet crush resistance realized based on CAE is
System, which includes: tester building module, for constructing virtual battery packet according to battery pack initial parameter, according to anti-extrusion
Property test site actual parameter construct virtual test place, according to the virtual pressure tool of pressure tool actual parameter building；Virtually
Test module, for requiring the correspondence of simulation virtual battery packet, virtual test place and virtual pressure tool according to actual test
Positional relationship, and virtual pressure tool is controlled according to actual test condition, virtual battery packet is squeezed, make virtual battery packet
It is displaced relative to virtual test place；Battery pack initial parameter screening module, for calculating virtual pressure tool in real time to virtual
Extrusion and displacement of the extruding force and virtual battery packet of battery pack relative to virtual test place judges that reaching default in extruding force squeezes
When pressure or extrusion and displacement reach preset displacement, whether the crush resistance of virtual battery packet meets preset condition, if satisfied, then depositing
Storage battery packet initial parameter, as battery pack design parameter design battery pack, if the crush resistance of virtual battery packet be unsatisfactory for it is pre-
If condition, then battery pack initial parameter is adjusted, until the crush resistance of virtual battery packet meets preset condition.
The simulated testing system of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: effective result judgement mould
Block for acquiring the relation curve of extruding force and extrusion and displacement, and judges whether the relation curve meets the following conditions: extruding force
Extruding force in pre-set interval accounts for the 10%-40% in the total section of extruding force；If satisfied, then determining relation curve qualification.
The simulated testing system of the above-mentioned Vehicular battery packet crush resistance based on CAE, further includes: effective result optimizing mould
Block, for finding the estimation extrusion and displacement amount that extruding force reaches default extruding force, resurveying crowded when relation curve is unqualified
The relation curve of pressure and extrusion and displacement, the extrusion and displacement total length of the relation curve are set as the 1.5- of estimation extrusion and displacement amount
2 times, and check that distance presets the nearest point of extruding force whether in extruding force pre-set interval, if not existing, extract 2 times of atom
Step is as a result, if check that distance presets two nearest peak points of extruding force and two o'clock line is checked that its slope absolute value is
It is no to be less thanIf more thanThen think that step evolution is excessive, then need for sub-step to be adjusted to original 2 times, until relation curve closes
Lattice.
For system embodiments, 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.
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, the integrated module of the simulated testing system of the Vehicular battery packet crush resistance based on CAE/mono-
If member is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a calculating
In machine read/write memory medium.Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method,
Relevant hardware can also be instructed to complete by computer program, the computer program can be stored in a computer can
It reads in storage medium, the computer program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Its
In, the computer program includes computer program code, and the computer program code can be source code form, object generation
Code form, executable file or certain intermediate forms etc..The computer-readable medium may include: that can carry the calculating
It is any entity or device of machine program code, 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 wave
Signal, telecommunication signal and software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be with
According to making laws in jurisdiction and the requirement of patent practice carries out increase and decrease appropriate, such as in certain jurisdictions, according to
Legislation and patent practice, computer-readable medium do not include electric carrier signal and telecommunication signal.
The embodiment of the invention also provides computer equipment, including memory, processor and storage are on a memory and can
The computer program run on a processor, the processor are realized above-mentioned each based on CAE when executing the computer program
Vehicular battery packet crush resistance simulation test embodiment in step, such as step S11 shown in FIG. 1, according to battery pack
Initial parameter constructs virtual battery packet, virtual test place is constructed according to crush resistance test site actual parameter, according to pressure
The virtual pressure tool of tool actual parameter building；Step S12, simulation virtual battery packet, virtual test are required according to actual test
The corresponding position relationship in place and virtual pressure tool, and virtual pressure tool is controlled to virtual battery according to actual test condition
Packet is squeezed, and is displaced virtual battery packet relative to virtual test place；Step S13, virtual pressure tool pair is calculated in real time
Extrusion and displacement of the extruding force and virtual battery packet of virtual battery packet relative to virtual test place, judges to reach pre- in extruding force
If extruding force or extrusion and displacement reach preset displacement, whether the crush resistance of virtual battery packet meets preset condition, if satisfied,
Then storage battery packet initial parameter designs battery pack as battery pack design parameter；If step S14, the anti-of virtual battery packet squeezes
Pressure property is unsatisfactory for preset condition, then battery pack initial parameter is adjusted, until the crush resistance of virtual battery packet meets preset condition
Until；Step S15, the relation curve of extruding force and extrusion and displacement is acquired, and judges whether the relation curve meets the following conditions:
Extruding force in extruding force pre-set interval accounts for the 10%-40% in the total section of extruding force；If satisfied, then determining that the relation curve closes
Lattice；If step S16, relation curve is unqualified, the estimation extrusion and displacement amount that extruding force reaches default extruding force is found, is adopted again
Collect the relation curve of extruding force and extrusion and displacement, the extrusion and displacement total length of the relation curve is set as estimation extrusion and displacement amount
1.5-2 times, and check that distance presets the nearest point of extruding force whether in extruding force pre-set interval, if not existing, extract 2 times
Atom step is as a result, if check that distance presets two nearest peak points of extruding force and two o'clock line is checked that its slope is absolute
Whether value is less thanIf more thanThen think that step evolution is excessive, then need for sub-step to be adjusted to original 2 times, until relation curve
It is qualified.Alternatively, the processor realizes the above-mentioned respectively IPR licensing system based on Internet of Things when executing the computer program
The function of each module/unit in embodiment of uniting, such as the analog detection method of Vehicular battery packet crush resistance based on CAE is
System, the system include: tester building module, virtual test module, battery pack initial parameter screening module, effective result judgement
Module, effective result optimizing module.
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 IPR licensing system based on Internet of Things.For example, the computer journey
Sequence can be divided into tester building module, virtual test module, battery pack initial parameter screening module, effective result judgement
Module, effective result optimizing module.
The computer equipment can be the calculating such as desktop PC, notebook, palm PC and cloud server and set
It is standby.The computer equipment may include, but be not limited only to, processor, memory.It will be understood by those skilled in the art that above-mentioned
Computer equipment is only the example of computer equipment, does not constitute the restriction to computer equipment, may include more or more
Few component perhaps combines certain components or different components, such as the computer equipment can also include input and 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 computer equipment, utilizes various interfaces and the entire computer equipment of connection
Various pieces.
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 computer equipment.The memory can mainly include storing program area and storage data area, wherein storage program
It area can application program (such as sound-playing function, image player function etc.) needed for storage program area, at least one function
Deng；Storage data area, which can be stored, uses created data (such as audio data, phone directory etc.) etc. according to mobile phone.In addition,
Memory may include high-speed random access memory, can also include nonvolatile memory, such as hard disk, memory, grafting
Formula 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.
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.
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 crush resistance analog detection method of the Vehicular battery packet based on CAE, which comprises the following steps:
Virtual battery packet is constructed according to battery pack initial parameter, virtual test is constructed according to crush resistance test site actual parameter
Place, according to the virtual pressure tool of pressure tool actual parameter building；
The corresponding position relationship of simulation virtual battery packet, virtual test place and virtual pressure tool is required according to actual test,
And virtual pressure tool is controlled according to actual test condition, virtual battery packet is squeezed, make virtual battery packet relative to virtual
Test site displacement；
Virtual pressure tool is calculated in real time to the extruding force and virtual battery packet of virtual battery packet relative to virtual test place
Extrusion and displacement judges that when extruding force reaches default extruding force or extrusion and displacement reaches preset displacement, the anti-of virtual battery packet squeezes
Whether pressure property meets preset condition, if satisfied, then storage battery packet initial parameter, designs battery as battery pack design parameter
Packet.
2. the analog detection method of the Vehicular battery packet crush resistance according to claim 1 based on CAE, feature exist
In, further includes: if the crush resistance of virtual battery packet is unsatisfactory for preset condition, battery pack initial parameter is adjusted, until virtual
Until the crush resistance of battery pack meets preset condition.
3. the analog detection method of the Vehicular battery packet crush resistance according to claim 2 based on CAE, feature exist
In, further includes: the relation curve of acquisition extruding force and extrusion and displacement, and judge whether the relation curve meets the following conditions: it squeezes
Extruding force in pressure pre-set interval accounts for the 10%-40% in the total section of extruding force；If satisfied, then determining relation curve qualification.
4. the analog detection method of the Vehicular battery packet crush resistance according to claim 3 based on CAE, feature exist
In, further includes: if relation curve is unqualified, the estimation extrusion and displacement amount that extruding force reaches default extruding force is found, is adopted again
Collect the relation curve of extruding force and extrusion and displacement, the extrusion and displacement total length of the relation curve is set as estimation extrusion and displacement amount
1.5-2 times, and check that distance presets the nearest point of extruding force whether in extruding force pre-set interval, if not existing, extract 2 times
Atom step is as a result, if check that distance presets two nearest peak points of extruding force and two o'clock line is checked that its slope is absolute
Whether value is less thanIf more thanThen think that step evolution is excessive, then need for sub-step to be adjusted to original 2 times, until relation curve
It is qualified.
5. the analog detection method of the Vehicular battery packet crush resistance according to claim 4 based on CAE, feature exist
In the building of virtual battery packet is implemented as follows:
Import battery pack threedimensional model；
Define thickness, size and the material of each building block of battery pack；
Add the connection unit of each building block of battery pack.
6. the analog detection method of the Vehicular battery packet crush resistance according to claim 5 based on CAE, feature exist
In, battery pack initial parameter include battery pack threedimensional model, the thickness of each building block of battery pack and size, it is material properties, each
The connection unit of building block.
7. the analog detection method of the Vehicular battery packet crush resistance according to claim 6 based on CAE, feature exist
In being attached using practical connection unit model for the important power transmission position in battery pack threedimensional model.
8. the analog detection method of the Vehicular battery packet crush resistance according to claim 7 based on CAE, feature exist
In using the virtual pressure tool of display algorithm calculating to the extruding force and virtual battery packet of virtual battery packet relative to virtual test
The extrusion and displacement in place.
9. the analog detection method of the Vehicular battery packet crush resistance according to claim 8 based on CAE, feature exist
In presetting extruding force is 100kN, and preset displacement is the 30% of the overall dimensions of the direction of extrusion, the crush resistance of virtual battery packet
The preset condition of satisfaction is that the battery modules inside battery pack are not affected by extruding.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
It is realized when execution such as the step of any one of claim 1-9 the method.
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