CN112748025A - Battery package torsional rigidity testing arrangement - Google Patents
Battery package torsional rigidity testing arrangement Download PDFInfo
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- CN112748025A CN112748025A CN201911055620.4A CN201911055620A CN112748025A CN 112748025 A CN112748025 A CN 112748025A CN 201911055620 A CN201911055620 A CN 201911055620A CN 112748025 A CN112748025 A CN 112748025A
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- 238000004088 simulation Methods 0.000 abstract description 10
- 238000004458 analytical method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0021—Torsional
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Abstract
The invention provides a device for testing torsional rigidity of a battery pack, which comprises: at least three constraint modules, a first loading module and a second loading module; the main body of the battery pack to be detected is fixed on the at least three constraint modules, and the at least three constraint modules are respectively connected with a fixed rod in a matching way; the first loading module and the second loading module are respectively and electrically connected with a displacement sensor, and the displacement sensor is fixed between the first loading module and the second loading module; the method comprises the steps of applying a first pressure through a first loading module and applying a second pressure through a second loading module, and displaying a displacement distance through a displacement sensor, wherein the first pressure and the second pressure are equal in magnitude and opposite in direction. The invention overcomes the defect that the torsional rigidity test result is obtained only by means of simulation analysis in the prior art, provides an actual numerical value for the torsional rigidity test of the battery pack, and improves the safety and reliability of the whole vehicle battery pack.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a device for testing torsional rigidity of a battery pack.
Background
The torsional rigidity of the battery pack is an important parameter, and can directly influence the safety and reliability of the battery pack and the whole vehicle. At present, most of the torsional rigidity tests of the battery pack in the prior art rely on Computer Aided Engineering (CAE) simulation analysis, the CAE is a difficult work, general analysis is assumed based on the defect-free structural materials, if actual materials have defects, further simulation analysis is needed, complexity is achieved, the actual torsional rigidity tests of the battery pack in the prior art are few, and no actual data are used for supporting.
Disclosure of Invention
The embodiment of the invention provides a device for testing torsional rigidity of a battery pack, which aims to solve the problems of complexity and uncertainty of a torsional rigidity test result obtained by only depending on simulation analysis in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a device for testing torsional rigidity of a battery pack, where the device for testing torsional rigidity of a battery pack includes:
at least three constraint modules, a first loading module and a second loading module;
the main body of the battery pack to be detected is fixed on the at least three constraint modules, and the at least three constraint modules are respectively connected with a fixed rod in a matching way;
the first loading module and the second loading module are respectively and electrically connected with a displacement sensor, and the displacement sensor is fixed between the first loading module and the second loading module;
the method comprises the steps of applying a first pressure through a first loading module and applying a second pressure through a second loading module, and displaying a displacement distance through a displacement sensor, wherein the first pressure and the second pressure are equal in magnitude and opposite in direction.
Further, the at least three constraint modules include: the device comprises a first constraint module, a second constraint module and a third constraint module;
the first restraint module is fixed above the displacement sensor by a first preset distance, the second restraint module is fixed at a first base angle position of the battery pack to be detected, and the third restraint module is fixed at a second base angle position of the battery pack to be detected.
Further, the first loading module is fixed at a first vertex angle of the battery pack to be detected; the second loading module is fixed at the position of a second vertex angle of the battery pack to be detected.
Further, the at least three constraint modules, the first loading module and the second loading module each include a fixed structure sub-module.
Further, the fixed structure submodule includes:
the battery pack edge-covering clamping plate is used for fixing a battery pack to be detected in a U shape;
the spherical hinge structure is fixed below the battery pack edge-covering clamping plate, and a second preset distance is reserved between the spherical hinge structure and the U-shaped opening of the battery pack edge-covering clamping plate;
the two clamping screws are fixed at the vertically symmetrical positions of the battery pack edge-covering clamping plate, the distance between the two clamping screws and the U-shaped opening of the battery pack edge-covering clamping plate is a third preset distance, and the second preset distance is larger than the third preset distance.
Furthermore, a U-shaped clamping plate is arranged outside the spherical hinge structure and connected with the spherical hinge structure through a pin shaft.
Further, the first loading module and the second loading module are respectively connected with a hydraulic circuit of the hydraulic actuating cylinder.
Further, the first loading module and the second loading module are respectively connected with a displacement circuit of the displacement sensor.
The invention has the beneficial effects that:
according to the embodiment of the invention, the battery pack to be detected is fixed through at least three constraint modules, first pressure is applied through the first loading module, second pressure is applied through the second loading module, and the displacement distance is displayed through the displacement sensor. The embodiment of the invention can guide the design development and the manufacturing quality control of the battery pack by measuring the actual torsional rigidity value of the battery pack, has flexible construction, strong applicability and convenient operation, and can be suitable for the torsional rigidity test of various battery packs.
Drawings
Fig. 1 is a schematic structural view of a torsional rigidity testing apparatus for a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic view of a part of the structure of a torsional rigidity testing apparatus for a battery pack according to an embodiment of the present invention.
Description of reference numerals:
1-a battery pack body to be detected; 2-a first load module; 3-a first constraint module; 4-a second load module; 5-a second constraint module; 6-a third constraint module; 7-fixing the rod; 8-a displacement sensor; 9-fixing the structural submodule; 10-hydraulic actuating cylinder; 11-battery wrapping edge clamping plate; 12-a clamping screw; 13-a spherical hinge structure; 14-U-shaped splints; 15-pin shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The invention provides a device for testing torsional rigidity of a battery pack, aiming at the problems of complexity and uncertainty of a torsional rigidity test result obtained by only depending on simulation analysis in the prior art.
As shown in fig. 1, a torsional rigidity testing apparatus for a battery pack according to an embodiment of the present invention includes:
at least three constraint modules and a first load module 2 and a second load module 4;
the battery pack body 1 to be detected is fixed on the at least three constraint modules, and the at least three constraint modules are respectively connected with a fixed rod 7 in a matching way;
the first loading module 2 and the second loading module 4 are respectively electrically connected with a displacement sensor 8, and the displacement sensor 8 is fixed between the first loading module 2 and the second loading module 4;
a first pressure is applied through the first loading module 2 and a second pressure is applied through the second loading module 4, and a displacement distance is displayed through the displacement sensor 8, wherein the first pressure and the second pressure are equal in magnitude and opposite in direction.
It should be noted that, in the embodiment of the present invention, a first pressure is applied by the first loading module 2, and a second pressure is applied by the second loading module 4, where the first pressure and the second pressure are equal in magnitude and opposite in direction. And the specific displacement value is displayed through a displacement sensor, wherein the displacement sensor is preferably a digital display displacement sensor, the specific displacement value in the test process can be effectively displayed, the design development and the manufacturing quality control of the battery pack can be guided through the specific displacement value, and the problems of complexity and uncertainty of the torsional rigidity test result obtained by only depending on simulation analysis in the prior art are solved.
Optionally, the at least three constraint modules include: a first constraint module 3, a second constraint module 5 and a third constraint module 6;
the first restraint module 3 is fixed above the displacement sensor 8 by a first preset distance, the second restraint module 5 is fixed at a first base angle position of the battery pack to be detected, and the third restraint module 6 is fixed at a second base angle position of the battery pack to be detected.
It should be noted that the at least three constraint devices fix the battery pack to be detected to be in a horizontal posture with the ground, and the first constraint module 3 is configured to fix a first preset distance position and a first vertex angle position above the displacement sensor 8 of the battery pack to be detected; the second constraint module 5 can constrain the posture of the first constraint module 3 and plays a role in fixing; the third constraint module 6 is used for constraining the main body of the battery pack to be tested, the position of the first vertex angle and the posture of the first constraint module 3; wherein, first preset distance is 3cm, can adjust according to actual conditions.
Optionally, in the embodiment of the present invention, the first loading module 2 is fixed at a first vertex angle of the battery pack to be detected;
the second loading module 4 is fixed at a second vertex angle of the battery pack to be detected.
It should be noted that a second pressure is applied by the first loading module 2 and the second loading module 4, and the first pressure and the second pressure are equal in magnitude and opposite in direction; and measuring the deformation amount of the corresponding position through the displacement sensor, recording after the pressure is applied each time and the displacement sensor displays the result, recovering the initial state of the test, measuring again, repeatedly measuring for three times, taking the average value for calculation, wherein the average value with larger error is discarded and measured again.
In the embodiment of the present invention, the at least three constraint modules, the first loading module 2, and the second loading module 4 each include a fixed structure sub-module 9.
As shown in fig. 2, in an embodiment of the present invention, the fixing structure sub-module 9 includes:
the battery pack edge-covering clamp plate 11 is used for fixing a battery pack to be detected in a U shape;
the spherical hinge structure 13 is fixed below the battery pack edge-covering clamping plate 11, and a second preset distance is reserved from the U-shaped opening of the battery pack edge-covering clamping plate 11;
two clamping screw 12 are fixed in battery package splint 11 upper and lower symmetric position of borduring, wherein two clamping screw 12 distances battery package splint 11's U-shaped mouth department has the third to predetermine the distance, just the second is predetermine the distance and is greater than the third is predetermine the distance.
It should be noted that the battery pack is surrounded by the upper layer and the lower layer of the battery pack edge-covering clamp plate 11, and is connected with the battery pack to be detected through the two clamping screws 12, so that the posture of the battery pack to be detected is fixed, and the problem of looseness of the battery pack in the test process is solved; the second is preset apart from can setting for the battery of U-shaped mouth department and is wrapped the length of the splint 11 lower floor half of borduring, the third is preset apart from can setting for the battery of U-shaped mouth department and is wrapped the length of the splint 11 lower floor third of borduring.
Optionally, a U-shaped clamp plate 14 is arranged outside the spherical hinge structure 13, and the U-shaped clamp plate 14 is connected with the spherical hinge structure 13 through a pin 15.
It should be noted that the upper end of the spherical hinge structure 13 is connected with the lower layer of the battery wrapping edge clamping plate 11 through a bolt, the U-shaped clamping plate 14 is connected with the spherical hinge structure 13 through a pin shaft 15, wherein the U-shaped clamping plate 14 can change the specification of the U-shaped clamping plate according to the size of the spherical hinge, so as to protect spherical hinges with different specifications; the spherical hinge structure 13 can rotate in three directions, the spherical hinge structure 13 can slide in the horizontal direction, and a bolt at the upper end of the spherical hinge structure 13 can position the spherical hinge structure.
Optionally, in the embodiment of the present invention, the first loading module 2 and the second loading module 4 are respectively connected to a hydraulic circuit of the hydraulic cylinder 10.
It should be noted that the hydraulic cylinder 10 is a power source for applying pressure to the first loading module 2 and the second loading module 4, and the magnitude and direction of the pressure can be controlled by controlling the first loading module 2 and the second loading module 4 through a hydraulic circuit.
Optionally, in the embodiment of the present invention, the first loading module 2 and the second loading module 4 are respectively connected to a displacement circuit of the displacement sensor 8.
It should be noted that, by applying a first downward pressure to the first loading module 2 and applying a second upward pressure to the second loading module 4, the displacement circuit senses the deformation amount brought by the battery pack to be detected through the two pressures by the displacement sensor, and the displacement sensor senses the deformation amount value displayed on a display unit through electrical connection.
The conventional torsional rigidity test of the battery pack mostly adopts a computer aided engineering technology simulation experiment test in a laboratory, and the evaluation is carried out by inputting a defect-free numerical value of a structural material of the battery pack, so that the simulation numerical value may have errors and is relatively complex in simulation. The embodiment of the invention has the advantages that the battery pack to be tested is fixed by the at least three constraint modules, the first loading module and the second loading module respectively apply pressure to the battery pack to be tested, the measurement value is displayed by the displacement sensor, the specific measurement of the torsional rigidity of the battery pack is completed, the defect that only a simulation experiment is carried out to obtain the test value is avoided, the design development and the manufacturing quality control of the battery pack can be guided, the assembly of the embodiment of the invention is flexible, the applicability is strong, the operation is convenient, and the method and the device can be suitable for the torsional rigidity test of various battery packs.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (8)
1. A battery pack torsional rigidity testing device is characterized by comprising:
at least three constraint modules and a first load module (2) and a second load module (4);
the battery pack main body (1) to be detected is fixed on the at least three constraint modules, and the at least three constraint modules are respectively connected with a fixed rod (7) in a matching way;
the first loading module (2) and the second loading module (4) are respectively electrically connected with a displacement sensor (8), and the displacement sensor (8) is fixed between the first loading module (2) and the second loading module (4);
a first pressure is applied through the first loading module (2) and a second pressure is applied through the second loading module (4), and a displacement distance is displayed through the displacement sensor (8), wherein the first pressure and the second pressure are equal in magnitude and opposite in direction.
2. The battery pack torsional rigidity testing apparatus of claim 1, wherein the at least three restraint modules comprise: a first constraint module (3), a second constraint module (5) and a third constraint module (6);
the first restraint module (3) is fixed above the displacement sensor (8) by a first preset distance, the second restraint module (5) is fixed at a first base angle position of the battery pack to be detected, and the third restraint module (6) is fixed at a second base angle position of the battery pack to be detected.
3. The battery pack torsional rigidity testing apparatus according to claim 1,
the first loading module (2) is fixed at a first vertex angle of the battery pack to be detected;
the second loading module (4) is fixed at the position of a second vertex angle of the battery pack to be detected.
4. The battery pack torsional rigidity testing apparatus according to claim 1,
the at least three restraint modules, the first load module (2) and the second load module (4) each comprise a fixed structure submodule (9).
5. The battery pack torsional rigidity testing apparatus of claim 4, wherein the fixed structural submodule (9) comprises:
the battery pack edge-wrapping clamp plate (11), wherein the battery pack edge-wrapping clamp plate (11) is used for fixing a battery pack to be detected in a U shape;
the spherical hinge structure (13) is fixed below the battery pack edge-wrapping clamping plate (11), and a second preset distance is reserved from the U-shaped opening of the battery pack edge-wrapping clamping plate (11);
two clamping screw (12), be fixed in battery package splint (11) longitudinal symmetry position of borduring, wherein two clamping screw (12) distances the U-shaped mouth department of battery package splint (11) of borduring has the third to predetermine the distance, just the second is predetermine the distance and is greater than the third is predetermine the distance.
6. The battery pack torsional rigidity testing apparatus according to claim 5,
the outer part of the spherical hinge structure (13) is provided with a U-shaped clamping plate (14), and the U-shaped clamping plate (14) is connected with the spherical hinge structure (13) through a pin shaft (15).
7. The battery pack torsional rigidity testing device of claim 1, characterized in that the first loading module (2) and the second loading module (4) are respectively connected with a hydraulic circuit of a hydraulic actuating cylinder (10).
8. The battery pack torsional rigidity testing device of claim 1, characterized in that the first loading module (2) and the second loading module (4) are respectively connected with a displacement circuit of the displacement sensor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055620.4A CN112748025A (en) | 2019-10-31 | 2019-10-31 | Battery package torsional rigidity testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055620.4A CN112748025A (en) | 2019-10-31 | 2019-10-31 | Battery package torsional rigidity testing arrangement |
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| CN112748025A true CN112748025A (en) | 2021-05-04 |
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| CN201911055620.4A Pending CN112748025A (en) | 2019-10-31 | 2019-10-31 | Battery package torsional rigidity testing arrangement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899639A (en) * | 2021-08-23 | 2022-01-07 | 惠州市豪鹏科技有限公司 | Battery hardness detection method and device, computer equipment and storage medium |
| CN116538989A (en) * | 2023-07-07 | 2023-08-04 | 宁德时代新能源科技股份有限公司 | Battery torsion detection method, related device, battery, equipment and storage medium |
| CN118067543A (en) * | 2024-04-19 | 2024-05-24 | 宁德时代新能源科技股份有限公司 | Test apparatus and battery test method |
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| CN1405542A (en) * | 2002-11-08 | 2003-03-26 | 清华大学 | Passenger vehicle body structure torsion rigid test restraining and loading device |
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