CN107423499A - Improve the system and method for battery bag resistance to shock - Google Patents
Improve the system and method for battery bag resistance to shock Download PDFInfo
- Publication number
- CN107423499A CN107423499A CN201710579214.2A CN201710579214A CN107423499A CN 107423499 A CN107423499 A CN 107423499A CN 201710579214 A CN201710579214 A CN 201710579214A CN 107423499 A CN107423499 A CN 107423499A
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- Prior art keywords
- battery bag
- bottom plate
- battery
- side plates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A kind of system for improving battery bag resistance to shock includes modeling module, obtains frequency module, model analysis module and judge module.Modeling module is used for the FEM model for establishing battery bag.Obtain the frequency range that frequency module is used to obtain the battery bag vibration experiment to be carried out.Model analysis module is used to carry out model analysis to the FEM model of battery bag, to obtain the intrinsic frequency of the FEM model of battery bag.Whether the intrinsic frequency that judge module is used to judge the FEM model of battery bag is in the frequency range of vibration experiment.When battery bag FEM model intrinsic frequency in the frequency range of vibration experiment when, modeling module be additionally operable to increase battery bag FEM model rigidity.The system of above-mentioned raising battery bag resistance to shock can improve the percent of pass of battery bag vibration-testing.The present invention also provides a kind of method of the raising battery bag resistance to shock of the system applied to above-mentioned raising battery bag resistance to shock.
Description
【Technical field】
The present invention relates to a kind of system and method for improving battery bag resistance to shock.
【Background technology】
Power source of the battery bag as electric automobile, its stability and security directly influence the stability of electric automobile
And security.The stability and security of battery bag are influenceed by the vibration resistance of battery bag again, and therefore, battery bag is using preceding needing
Vibration-testing is carried out, to examine the resistance to shock of battery bag, and only test passes can just come into operation, underproof need
Want heavy industry.However, the vibration resistance of existing battery bag is not fine, therefore, the percent of pass of vibration-testing is not also high.
In consideration of it, real be necessary to provide a kind of system and method for improving battery bag resistance to shock to overcome disadvantages described above.
【The content of the invention】
It is an object of the invention to provide a kind of raising battery bag resistance to shock that can improve battery bag vibration-testing percent of pass
System.
To achieve these goals, the present invention provides a kind of system for improving battery bag resistance to shock, the raising battery
The system of bag resistance to shock includes modeling module, obtains frequency module, model analysis module and judge module；The modeling module
For establishing the FEM model of battery bag, the acquisition frequency module is used to obtain the battery bag vibration experiment to be carried out
Frequency range；The model analysis module is used to carry out model analysis to the FEM model of the battery bag, to obtain
State the intrinsic frequency of the FEM model of battery bag；The FEM model that the judge module is used to judge the battery bag is consolidated
There is frequency whether in the frequency range of the vibration experiment；When the battery bag FEM model intrinsic frequency described
When in the frequency range of vibration experiment, the modeling module is additionally operable to increase the rigidity of the FEM model of the battery bag；When
When the intrinsic frequency of the FEM model of the battery bag is not in the frequency range of the vibration experiment, the modeling module is also
The rigidity of FEM model for maintaining the battery bag is constant.
The purpose of the present invention is also to provide a kind of raising battery bag vibration resistance that can improve battery bag vibration-testing percent of pass
The method of energy.
To achieve these goals, the present invention provides a kind of method for improving battery bag resistance to shock, the raising battery
The method of bag resistance to shock includes：
A. the FEM model of battery bag is established；
B. the frequency range of the battery bag vibration experiment to be carried out is obtained；
C. model analysis is carried out to the FEM model of the battery bag, to obtain the FEM model of the battery bag
Intrinsic frequency；
D. judge the intrinsic frequency of the FEM model of the battery bag whether in the frequency range of the vibration experiment；
E. when the battery bag FEM model intrinsic frequency in the frequency range of the vibration experiment when, increase
The rigidity of the FEM model of the battery bag, and perform step c.
F. when the battery bag FEM model intrinsic frequency not in the frequency range of the vibration experiment when, dimension
The rigidity for holding the FEM model of the battery bag is constant.
Compared to prior art, the present invention establishes the FEM model of battery bag by the modeling module；And pass through institute
State model analysis module and model analysis is carried out to the FEM model of the battery bag, to obtain the finite element mould of the battery bag
The intrinsic frequency of type；And judge the intrinsic frequency of the FEM model of the battery bag whether described by the judge module
In the frequency range of vibration experiment；Also by the modeling module the FEM model of the battery bag intrinsic frequency in institute
The rigidity for the FEM model for increasing the battery bag when in the frequency range of vibration experiment is stated, so that the battery bag is limited
The intrinsic frequency of meta-model carries out vibration-testing not in the frequency range of the vibration experiment, so as to improve the battery bag
Percent of pass.
【Brief description of the drawings】
Fig. 1 is the theory diagram of the system for the raising battery bag resistance to shock that embodiments of the invention provide.
Fig. 2 is the decomposing schematic representation for the battery bag that embodiments of the invention provide.
Fig. 3 is the flow chart of the method for the raising battery bag resistance to shock that embodiments of the invention provide.
Fig. 4 is the sub-process figure of step S1 in Fig. 3.
【Embodiment】
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, ordinary skill personage are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that skilled worker is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Referring to Fig. 1, Fig. 1 is the principle of the system 100 for the raising battery bag resistance to shock that embodiments of the invention provide
Block diagram.The system 100 for improving battery bag resistance to shock includes modeling module 10, obtains frequency module 20, model analysis mould
Block 30 and judge module 40.The modeling module 10 is used for the FEM model for establishing battery bag.The acquisition frequency module 20
For obtaining the frequency range of the battery bag vibration experiment to be carried out.The model analysis module 30 is used for the battery
The FEM model of bag carries out model analysis, to obtain the intrinsic frequency of the FEM model of the battery bag.The judgement mould
Whether the intrinsic frequency that block 40 is used to judge the FEM model of the battery bag is in the frequency range of the vibration experiment.When
When the intrinsic frequency of the FEM model of the battery bag is in the frequency range of the vibration experiment, the modeling module 10 is also
For the rigidity for the FEM model for increasing the battery bag.When the battery bag FEM model intrinsic frequency not in institute
When stating in the frequency range of vibration experiment, the modeling module 10 is additionally operable to maintain the rigidity of the FEM model of the battery bag
It is constant.
It is appreciated that the vibration experiment is the coupled vibration ring that the simulation battery bag is likely to occur in use
Border, to determine that can the battery bag bear the vibration under various environment.Frequency and the battery bag when the vibration experiment
Intrinsic frequency it is identical when, the battery bag can resonate, and the probability of battery bag failure can increase, so as to pass through
The vibration experiment.
In the present embodiment, the frequency range of the vibration experiment is 5-200 hertz, and wherein load energy ratio is larger
Frequency range is 5-50 hertz, and therefore, the battery bag intrinsic frequency of itself will avoid 5-200 hertz as far as possible, be important to keep away
5-50 hertz is opened, is otherwise difficult to pass through vibration-testing.The model analysis module 30 can also obtain the corresponding battery bag
The vibration shape of the intrinsic frequency of FEM model.In other embodiments, the frequency range of the vibration experiment can be according to reality
Situation is adjusted correspondingly.
The modeling module 10 establishes unit 12 including model, relation establishes unit 16 and material setting unit 18.It is described
Model establishes unit 12 and is used to establish the FEM model of the battery bag using grid and node.The battery bag 50 includes case
Body 51 and the battery modules 56 (as shown in Figure 2) being contained in the casing 51.The casing 51 includes bottom plate 52 and is arranged on
Four side plates 53 at the edge of the bottom plate 52.The bottom plate 52 surrounds with four side plates 53 and houses the battery modules 56
Receiving space.The relation establishes unit 16 and is used to establish the bottom plate 52, four side plates 53 and the battery modules
56 annexation and restriction relation.The material setting unit 18 is used to set the bottom plate 52, four side plates 53
And the material properties and material parameter of the battery modules 56.In the present embodiment, the material parameter includes density, elasticity
Modulus, Poisson's ratio, material damping.The battery modules 56 include the battery cell of multiple series connection and/or parallel connection.
The model analysis module 30 is additionally operable to enter the bottom plate 52, four side plates 53 and the battery modules 56
Row model analysis, to obtain the intrinsic frequency of each exponent number of the bottom plate 52, four side plates 53 and the battery modules 56
Rate.The judge module 40 is additionally operable to judge each rank of the bottom plate 52, four side plates 53 and the battery modules 56
Whether several intrinsic frequencies is in the frequency range of the vibration experiment.When the intrinsic frequency of a certain exponent number of the bottom plate 52 exists
When in the frequency range of the vibration experiment, the modeling module 10 increases the rigidity of the FEM model of the bottom plate 52.When
When the intrinsic frequency of a certain exponent number of four side plates 53 is in the frequency range of the vibration experiment, the modeling module 10
Increase the rigidity of the FEM model of four side plates 53.When the battery modules 56 a certain exponent number intrinsic frequency in institute
When stating in the frequency range of vibration experiment, the modeling module 10 increases the rigidity of the FEM model of the battery modules 56.
The modeling module 10 is by increasing reinforcer on the bottom plate 52 or changing the material properties of the bottom plate 52
Or material parameter increases the rigidity of the FEM model of the bottom plate 52.The modeling module 10 passes through in four side plates
Increase material properties or the material parameter of reinforcer or modification four side plates 53 on 53 to increase by four side plates 53
The rigidity of FEM model.The modeling module 10 in the battery modules 56 by increasing reinforcer or the modification battery
The material properties of module 56 or material parameter increase the rigidity of the FEM model of the battery modules 56.
Referring to Fig. 3, Fig. 3 is the flow of the method for the resistance to shock of raising battery bag 50 that embodiments of the invention provide
Figure.According to different demands, the execution sequence of the step in flow chart shown in Fig. 3 can change, and some steps can be split
For several steps, some steps can be omitted.
Step S1, the modeling module 10 establish the FEM model of battery bag 50.
Step S2, the frequency range for obtaining frequency module 20 and obtaining the vibration experiment to be carried out of battery bag 50.
Step S3, the model analysis module 30 carry out model analysis to the FEM model of the battery bag 50, with
To the intrinsic frequency of the FEM model of the battery bag 50.
Whether step S4, the judge module 40 judge the intrinsic frequency of the FEM model of the battery bag 50 described
In the frequency range of vibration experiment.If the intrinsic frequency of the FEM model of the battery bag 50 is in the frequency of the vibration experiment
In the range of, perform step S5；If the intrinsic frequency of the FEM model of the battery bag 50 is not in the frequency of the vibration experiment
In the range of, perform step S6.
Step S5, the modeling module 10 increase the rigidity of the FEM model of the battery bag 50, and perform step S3.
Step S6, the modeling module 10 maintain the rigidity of the FEM model of the battery bag 50 constant.
Referring to Fig. 4, Fig. 4 is the sub-process figure of step S1 in Fig. 3.According to different demands, in the flow chart shown in Fig. 4
The step of execution sequence can change, some steps can be split as several steps, and some steps can be omitted.
Step S11, the model establish the FEM model that unit 12 establishes the battery bag 50 using grid and node,
The battery bag 50 includes casing 51 and the battery modules 56 that are contained in the casing 51, the casing 51 include bottom plate 52 and
Four side plates 53 at the edge of the bottom plate 52 are arranged on, the bottom plate 52 surrounds with four side plates 53 and houses the battery
The receiving space of module 56.
Step S12, the relation establish unit 16 and establish the bottom plate 52, four side plates 53 and the battery modules
56 annexation and restriction relation.
Step S13, the material setting unit 18 set the bottom plate 52, four side plates 53 and the battery modules
56 material properties and material parameter.
In the present embodiment, step S3 includes the model analysis module 30 to the bottom plate 52, four side plates
53 and the battery modules 56 carry out model analysis, to obtain the bottom plate 52, four side plates 53 and the battery modules
The intrinsic frequency of 56 each exponent number.Step S4 judges the bottom plate 52, four side plates 53 including the judge module 40
And whether the intrinsic frequency of each exponent number of the battery modules 56 is in the frequency range of the vibration experiment.Step S5 includes
When the bottom plate 52 a certain exponent number intrinsic frequency in the frequency range of the vibration experiment when, the modeling module 10 is logical
The material properties for increasing reinforcer or the modification bottom plate 52 on the bottom plate 52 or material parameter are crossed to increase the bottom plate
The rigidity of 52 FEM model；When four side plates 53 a certain exponent number intrinsic frequency the vibration experiment frequency
In the range of when, the modeling module 10 on four side plates 53 by increasing reinforcer or modification four side plates 53
Material properties or material parameter increase the rigidity of the FEM model of four side plates 53；And when the battery modules 56
A certain exponent number intrinsic frequency in the frequency range of the vibration experiment when, the modeling module 10 passes through in the battery
Increase material properties or the material parameter of reinforcer or the modification battery modules 56 on module 56 to increase the battery modules
The rigidity of 56 FEM model.
The present invention establishes the FEM model of battery bag 50 by the modeling module 10；And pass through the model analysis mould
Block 30 carries out model analysis to the FEM model of the battery bag 50, to obtain consolidating for the FEM model of the battery bag 50
There is frequency；And judge whether the intrinsic frequency of the FEM model of the battery bag 50 shakes described by the judge module 40
In the frequency range of dynamic experiment；Also existed by intrinsic frequency of the modeling module 10 in the FEM model of the battery bag 50
Increase the rigidity of the FEM model of the battery bag 50 when in the frequency range of the vibration experiment, so that the battery bag 50
FEM model intrinsic frequency not in the frequency range of the vibration experiment, carried out so as to improve the battery bag 50
The percent of pass of vibration-testing.
The present invention is not restricted to described in specification and embodiment, therefore for the personage of familiar field
Additional advantage and modification is easily achieved, therefore in the essence of the universal limited without departing substantially from claim and equivalency range
In the case of refreshing and scope, the present invention is not limited to specific details, representational equipment and shown here as the diagram with description
Example.
Claims (10)
- A kind of 1. system for improving battery bag resistance to shock, it is characterised in that：The system bag for improving battery bag resistance to shock Include modeling module, obtain frequency module, model analysis module and judge module；The modeling module is used to establish having for battery bag Limit meta-model, the frequency range for obtaining frequency module and being used to obtain the battery bag vibration experiment to be carried out；The mould State analysis module is used to carry out model analysis to the FEM model of the battery bag, to obtain the finite element mould of the battery bag The intrinsic frequency of type；The judge module is used to judge whether the intrinsic frequency of the FEM model of the battery bag shakes described In the frequency range of dynamic experiment；When the battery bag FEM model intrinsic frequency the vibration experiment frequency range When interior, the modeling module is additionally operable to increase the rigidity of the FEM model of the battery bag；When the finite element of the battery bag When the intrinsic frequency of model is not in the frequency range of the vibration experiment, the modeling module is additionally operable to maintain the battery bag FEM model rigidity it is constant.
- 2. the system of battery bag resistance to shock is improved as claimed in claim 1, it is characterised in that：The modeling module includes mould Type establishes unit, relation establishes unit and material setting unit, and the model establishes unit and is used to use grid and node foundation The FEM model of the battery bag, the battery bag include casing and the battery modules being contained in the casing, the case Body includes bottom plate and is arranged on four side plates at the edge of the bottom plate, and the bottom plate is surrounded described in collecting with four side plates The receiving space of battery modules；The relation establishes unit and is used to establish the bottom plate, four side plates and the battery mould The annexation and restriction relation of group；The material setting unit is used to set the bottom plate, four side plates and described The material properties and material parameter of battery modules.
- 3. the system of battery bag resistance to shock is improved as claimed in claim 2, it is characterised in that：The model analysis module is also For carrying out model analysis to the bottom plate, four side plates and the battery modules, to obtain the bottom plate, described four The intrinsic frequency of side plate and each exponent number of the battery modules, the judge module are additionally operable to judge the bottom plate, described four Whether the intrinsic frequency of individual side plate and each exponent number of the battery modules is in the frequency range of the vibration experiment；When described When the intrinsic frequency of a certain exponent number of bottom plate is in the frequency range of the vibration experiment, the modeling module increases the bottom plate FEM model rigidity；When four side plates a certain exponent number intrinsic frequency the vibration experiment frequency range When interior, the modeling module increases the rigidity of the FEM model of four side plates；When a certain exponent number of the battery modules Intrinsic frequency in the frequency range of the vibration experiment when, the modeling module increases the finite element mould of the battery modules The rigidity of type.
- 4. the system of battery bag resistance to shock is improved as claimed in claim 3, it is characterised in that：The modeling module by Increase material properties or the material parameter of reinforcer or the modification bottom plate on the bottom plate to increase the finite element of the bottom plate The rigidity of model；The modeling module is by increasing reinforcer on four side plates or changing the material of four side plates Attribute or material parameter increase the rigidity of the FEM model of four side plates；The modeling module passes through in the battery Increase material properties or the material parameter of reinforcer or the modification battery modules on module to increase having for the battery modules Limit the rigidity of meta-model.
- 5. the system of battery bag resistance to shock is improved as claimed in claim 2, it is characterised in that：The material parameter includes close Degree, modulus of elasticity, Poisson's ratio, material damping.
- A kind of 6. method for improving battery bag resistance to shock, it is characterised in that：The method bag for improving battery bag resistance to shock Include：A. the FEM model of battery bag is established；B. the frequency range of the battery bag vibration experiment to be carried out is obtained；C. model analysis is carried out to the FEM model of the battery bag, to obtain the intrinsic of the FEM model of the battery bag Frequency；D. judge the intrinsic frequency of the FEM model of the battery bag whether in the frequency range of the vibration experiment；E. when the battery bag FEM model intrinsic frequency in the frequency range of the vibration experiment when, described in increase The rigidity of the FEM model of battery bag, and perform step c.F. when the battery bag FEM model intrinsic frequency not in the frequency range of the vibration experiment when, maintain institute The rigidity for stating the FEM model of battery bag is constant.
- 7. the method for battery bag resistance to shock is improved as claimed in claim 6, it is characterised in that：Step a includes：The FEM model of the battery bag is established using grid and node, the battery bag includes casing and is contained in the case Internal battery modules, the casing include bottom plate and are arranged on four side plates at the edge of the bottom plate, the bottom plate and institute State four side plates and surround the receiving space for housing the battery modules；Establish the annexation and restriction relation of the bottom plate, four side plates and the battery modules；AndThe material properties and material parameter of the bottom plate, four side plates and the battery modules are set.
- 8. the method for battery bag resistance to shock is improved as claimed in claim 7, it is characterised in that：Step c is included to the bottom Plate, four side plates and the battery modules carry out model analysis, to obtain the bottom plate, four side plates and the electricity The intrinsic frequency of each exponent number of pond module.
- 9. the method for battery bag resistance to shock is improved as claimed in claim 8, it is characterised in that：Step d is included described in judgement The intrinsic frequency of each exponent number of bottom plate, four side plates and the battery modules whether the vibration experiment frequency model In enclosing.
- 10. the method for battery bag resistance to shock is improved as claimed in claim 9, it is characterised in that：Step e includes：When the bottom plate a certain exponent number intrinsic frequency in the frequency range of the vibration experiment when, by the bottom plate The material properties or material parameter of upper increase reinforcer or the modification bottom plate increase the firm of the FEM model of the bottom plate Degree；When four side plates a certain exponent number intrinsic frequency in the frequency range of the vibration experiment when, by described Increase material properties or the material parameter of reinforcer or modification four side plates on four side plates to increase by four side plates FEM model rigidity；AndWhen the battery modules a certain exponent number intrinsic frequency in the frequency range of the vibration experiment when, by described Increase material properties or the material parameter of reinforcer or the modification battery modules in battery modules to increase the battery modules FEM model rigidity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710579214.2A CN107423499A (en) | 2017-07-17 | 2017-07-17 | Improve the system and method for battery bag resistance to shock |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710579214.2A CN107423499A (en) | 2017-07-17 | 2017-07-17 | Improve the system and method for battery bag resistance to shock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3605658A1 (en) * | 2018-08-02 | 2020-02-05 | Saic Motor Corporation Limited | Flexible copper busbar and method and apparatus for designing flexible copper busbar of power battery |
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| EP3605658A1 (en) * | 2018-08-02 | 2020-02-05 | Saic Motor Corporation Limited | Flexible copper busbar and method and apparatus for designing flexible copper busbar of power battery |
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| CN110854348B (en) * | 2018-08-02 | 2022-05-10 | 上海汽车集团股份有限公司 | Design method and device for soft copper busbar and soft copper busbar of power battery |
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Application publication date: 20171201 |