CN110926750A - Battery collision test device and method - Google Patents
Battery collision test device and method Download PDFInfo
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- CN110926750A CN110926750A CN201911405358.1A CN201911405358A CN110926750A CN 110926750 A CN110926750 A CN 110926750A CN 201911405358 A CN201911405358 A CN 201911405358A CN 110926750 A CN110926750 A CN 110926750A
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
A battery impact test apparatus includes a rack, an impact structure and a slide table device, wherein the impact structure includes a fixed portion fixedly connected within the rack, a movable portion having a part thereof slidably connected in the fixed portion, and a driving system fixed on the fixed portion and controlling a semi-cylindrical impact head of the movable portion located outside the rack; the sliding table device comprises a sliding table, a battery tool, a DTS data acquisition system and a support structure, wherein the battery tool, the support structure and the DTS data acquisition system are fixedly arranged on the sliding table, and the DTS data acquisition system is positioned below the support structure; the sliding table is close to the semi-cylindrical collision head of the collision structure in a sliding mode, so that the triggering time of the DTS data acquisition system is consistent with the contact time of a battery pack fixedly mounted on the battery tool and the semi-cylindrical collision head. The battery collision test device provided by the invention is used for testing battery collision, and the deformation quantity and energy generated when the battery pack is collided can be obtained.
Description
Technical Field
The invention relates to the field of mechanical technology and safety detection, in particular to a battery collision test device and a battery collision test method.
Background
The rise of new energy automobiles is now well focused, and the safety of the new energy automobiles is the first time, and the global major challenge of battery safety is very necessary to carry out safety tests.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a battery crash test apparatus, which can perform a crash test on a battery pack of a new energy vehicle to verify the safety performance of a battery.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a battery impact test device comprises a rack, an impact structure and a sliding table device, wherein,
the collision structure comprises a fixed part, a movable part and a driving system, wherein the fixed part is fixedly connected in the rack, one part of the movable part is slidably connected in the fixed part, and the driving system is fixed on the fixed part and controls a semi-cylindrical collision head of the movable part positioned outside the rack;
the sliding table device comprises a sliding table, a battery tool, a DTS data acquisition system and a support structure, wherein the battery tool, the support structure and the DTS data acquisition system are fixedly arranged on the sliding table, the distance between the battery tool and the rack is smaller than the distance between the support structure and the rack, and the DTS data acquisition system is positioned below the support structure;
the sliding table is close to the semi-cylindrical collision head of the collision structure in a sliding mode, so that the distance between the battery pack fixedly mounted on the battery tool and the semi-cylindrical collision head meets the condition that the triggering time of the DTS data acquisition system is consistent with the contact time of the battery pack and the semi-cylindrical collision head.
Further, the rack comprises two side support structures, an upper support structure and a lower support structure, wherein the upper support structure is arranged between the two side support structures and is fixedly connected with the two side support structures respectively, and the lower support structure is arranged between the two side support structures below the upper support structure and is fixedly connected with the two side support structures respectively.
Further, the side bracket structure includes a barrier bracket, a middle bracket, a bottom bracket, a first side bracket, a second side bracket, and a third side bracket, wherein the barrier bracket, the middle bracket, and the bottom bracket are disposed parallel to each other and all parallel to the ground, the first side bracket, the second side bracket, and the third side bracket are disposed parallel to each other and respective both ends thereof are fixedly connected to the barrier bracket and the bottom bracket, respectively, and the middle bracket is also fixedly connected to the first side bracket, the second side bracket, and the third side bracket, respectively.
Further, the upper bracket structure comprises a first upper bracket, a second upper bracket and a third upper bracket, wherein the first upper bracket, the second upper bracket and the third upper bracket are arranged parallel to each other on the same horizontal plane and are fixedly connected to the barrier brackets of the two side bracket structures at respective two ends.
Further, the lower bracket structure includes a first lower bracket and a second lower bracket, wherein the first lower bracket and the second lower bracket are disposed in parallel and both ends of each are respectively and fixedly connected to the middle brackets of the two side bracket structures, two brackets are fixedly connected between the first lower bracket and the second upper bracket, the two brackets are located at both sides of the fixed portion of the crash structure, two connection brackets are fixedly connected between the second lower bracket and the second upper bracket, and the two connection brackets are located at both sides of the fixed portion of the crash structure.
Further, the fixing portion of the crash structure includes a first upper cross plate, a second upper cross plate, a first lower cross plate, a second lower cross plate, a first middle plate, a second middle plate, a fool-proof safety plate, and a linear bearing, wherein the first upper cross plate is disposed below the first and second upper brackets, the first lower cross plate is disposed above the first and second lower brackets and the first lower cross plate is fixedly connected to the first and second lower brackets by fasteners, respectively, the second middle plate and the fool-proof safety plate are disposed between the first upper cross plate and the first lower cross plate and both ends thereof are fixedly connected to the first upper cross plate and the first lower cross plate by fasteners, respectively, and both ends thereof are fixedly connected to the first middle plate and the second middle plate by fasteners, respectively.
Further, the movable portion of the collision structure includes a front plate, four optical axes, a rear plate, and a semi-cylindrical collision head, the four optical axes pass through the linear bearings on the first middle plate and the second middle plate, respectively, in parallel with each other and are fixedly connected to the front plate and the rear plate, respectively, at respective both ends thereof, and distances between every two adjacent optical axes of the four optical axes are equally arranged on the front plate, the first middle plate, the second middle plate, and the rear plate, respectively.
A battery crash test method using the battery crash test apparatus includes the steps of:
the method comprises the following steps: the optical axis, the front plate, the connecting part, the tension and pressure sensor and the semi-cylindrical collision head of the movable part of the collision structure are sequentially arranged on the rack, the battery pack to be tested is fixed on a sliding table of sliding table equipment through a battery tool, and the battery pack is marked;
step two: closing the entrance guard, and opening the light supplement lamp;
step three: the system is respectively connected with a camera and a DTS data acquisition system;
step four: setting speed and quality parameters of the sliding table equipment;
step five: starting a battery collision test, automatically moving a sliding table of sliding table equipment to a set position towards a rack under the action of an actuating system, and adjusting the distance between a battery pack and a semi-cylindrical collision head to enable the triggering time of a DTS data acquisition system to be consistent with the contact time of the battery pack and the semi-cylindrical collision head;
step six: the semi-cylindrical collision head is released by starting a driving system of the collision structure, moves towards the sliding table equipment and turns off the light supplement lamp after the pre-collision with the battery pack is finished;
step seven: and (5) sorting the data and determining the deformation range of the battery pack.
Further, the frame number of the camera is 1000, and the acquisition frequency of the DTS data acquisition system is 20000 Hz.
Further, in step seven, the deformation amount of the battery pack calculated using the data of the camera and the deformation amount of the battery pack calculated using the data of the DTS data acquisition system are compared to determine the deformation amount range of the battery pack.
By adopting the technical scheme, the invention has the beneficial effects that:
the battery collision test device can perform collision test on the battery pack of the new energy automobile and verify the safety performance of the battery. The battery collision test device can be used for testing battery collision, can obtain the deformation and energy generated when the battery pack is collided, has high test repeatability, and can be widely used for vehicles using batteries as power source of vehicles.
Drawings
FIG. 1 is a perspective view of a battery crash test apparatus of the present invention;
FIG. 2 is a front view of a battery crash test apparatus of the present invention;
FIG. 3 is a bottom view of the battery crash test apparatus of the present invention;
fig. 4 is a plan view of the battery impact test apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The battery crash test device of the present invention, as shown in fig. 1-4, comprises a stand 1, a crash structure 2 and a slide table apparatus 3, wherein the collision structure 2 includes a fixed portion 21, a movable portion 22, and a driving system (not shown), the fixed portion 21 being fixedly coupled within the platform 1, a portion of the movable portion 22 being slidably coupled within the fixed portion 21, a driving system is fixed on the fixed portion 21 and controls the semi-cylindrical collision head 222 of the movable portion 22 located outside the gantry 1, the slide table apparatus 3 includes a slide table 31, a battery tool 32, a bracket structure 33, and a DTS (digital cinema system) data acquisition system 34, the battery tool 32, the bracket structure 33, and the DTS data acquisition system 34 are fixedly installed on the slide table 31, and the distance between the battery tool 32 and the rack 1 is smaller than the distance between the support structure 33 and the rack 1, and the DTS data acquisition system 34 is positioned below the support structure 33. The sliding table 31 of the sliding table device 3 slidably approaches the semi-cylindrical collision head 222 of the collision structure 2, so that the distance between the battery pack 35 fixedly mounted on the battery tool 32 and the semi-cylindrical collision head 222 meets the requirement that the triggering time T02 of the DTS data acquisition system 34 is consistent with the contact time T01 of the battery pack 35 and the semi-cylindrical collision head 222.
As shown in fig. 1 and 2, the gantry 1 includes side support structures 11, an upper support structure 12, and a lower support structure 13. The two side support structures 11 are symmetrically arranged, the upper support structure 12 is arranged between the two side support structures 11 and is fixedly connected with the two side support structures 11 respectively, and the lower support structure 13 is arranged between the two side support structures 11 and is fixedly connected with the two side support structures 11 respectively below the upper support structure 12.
The side bracket structure 11 includes a barrier bracket 111, a middle bracket 112, a bottom bracket 113, a first side bracket 114, a second side bracket 115, and a third side bracket 116, wherein the barrier bracket 111, the middle bracket 112, and the bottom bracket 113 are disposed parallel to each other and all parallel to the ground. The first side bracket 114, the second side bracket 115, and the third side bracket 116 are disposed parallel to each other and are fixedly connected at respective both ends to the barrier bracket 111 and the bottom bracket 113, respectively, wherein the first side bracket 114, the second side bracket 115, and the third side bracket 116 are inclined toward the slide table 31 of the slide table apparatus 3. The middle bracket 112 is also fixedly connected with a first side bracket 114, a second side bracket 115 and a third side bracket 116, respectively. The barrier support 111, the middle support 112, the bottom support 113, the first side support 114, the second side support 115, and the third side support 116 form a side support structure 11 in a shape of a Chinese character tian.
The upper bracket structure 12 includes a first upper bracket 121, a second upper bracket 122, and a third upper bracket 123, wherein the first upper bracket 121, the second upper bracket 122, and the third upper bracket 123 are disposed parallel to each other and on the same horizontal plane. The first upper bracket 121, the second upper bracket 122 and the third upper bracket 123 are fixedly connected at respective both ends to the barrier brackets 111 of the two side bracket structures 11, respectively. A plurality of brackets 124 are disposed between the first and second upper brackets 121 and 122 and both ends of each bracket 124 are fixedly connected to the first and second upper brackets 121 and 122, respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the first upper bracket 121 or the second upper bracket 122 are disposed adjacent to each other. In an embodiment, six brackets 124 are disposed between the first upper bracket 121 and the second upper bracket 122 and both ends of each bracket 124 are fixedly connected to the first upper bracket 121 and the second upper bracket 122, respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the first upper bracket 121 or the second upper bracket 122 are disposed adjacently, and the two adjacent brackets 124 are in a V shape. Also, a plurality of brackets 124 are disposed between the second and third upper brackets 122 and 123 and both ends of each bracket 124 are fixedly connected to the second and third upper brackets 122 and 123, respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the second upper bracket 122 or the third upper bracket 123 are disposed adjacently. In one embodiment, four brackets 124 are disposed between the second upper bracket 122 and the third upper bracket 123 and both ends of each bracket 124 are fixedly connected to the second upper bracket 122 and the third upper bracket 123, respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the third upper bracket 123 are disposed adjacently, and the two adjacent brackets 124 are in a V shape.
The lower bracket structure 13 includes a first lower bracket 131 and a second lower bracket 132, wherein the first lower bracket 131 and the second lower bracket 132 are disposed in parallel and both ends of each are fixedly connected to the middle brackets 112 of the two side bracket structures 11, respectively. Several brackets 124 are disposed between the first lower bracket 131 and the second lower bracket 132 and both ends of each bracket 124 are fixedly connected to the first lower bracket 131 and the second lower bracket 132, respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the first lower bracket 131 or the second lower bracket 132 are disposed adjacently. In an embodiment, six brackets 124 are disposed between the first lower bracket 131 and the second lower bracket 132 and both ends of each bracket 124 are fixedly connected to the first lower bracket 131 and the second lower bracket 132 respectively, wherein the ends of two adjacent brackets 124 fixedly connected to the first lower bracket 131 or the second lower bracket 132 are disposed adjacently, and the two adjacent brackets 124 also present a V shape. Two brackets 133 are fixedly connected between the first lower bracket 131 and the second upper bracket 122, and the two brackets 133 are located at both sides of the fixed portion 21 of the crash structure 2. Two connecting brackets 134 are fixedly connected between the second lower bracket 132 and the second upper bracket 122, and the two connecting brackets 134 are located at both sides of the fixing portion 21 of the crash structure 2.
The fixing portion 21 of the collision structure 2 includes a first upper cross plate 211, a second upper cross plate 212, a first lower cross plate 213, a second lower cross plate 214, a first middle plate 219, a second middle plate 220, a fool-proof safety plate 215, and a linear bearing 216, wherein the first upper cross plate 211 is disposed below the first and second upper brackets 121 and 122, the first lower cross plate 213 is disposed above the first and second lower brackets 131 and 132, and the first lower cross plate 213 is fixedly connected to the first and second lower brackets 131 and 132 by fasteners, respectively. The second middle plate 220 and the fool-proof safety plate 215 are disposed between the first upper cross plate 211 and the first lower cross plate 213 and both ends of each are fixedly connected to the first upper cross plate 211 and the first lower cross plate 213, respectively, by fasteners. Both ends of each of the second upper cross plate 212 and the second lower cross plate 214 are fixedly connected to the first middle plate 219 and the second middle plate 220 by fasteners, respectively.
The movable portion 22 of the collision structure 2 includes a front plate 218, an optical axis 217, a rear plate 221, and a semi-cylindrical collision head 222. In one embodiment, the number of the optical axes 217 is four, four optical axes 217 pass through the linear bearings 216 on the first middle plate 219 and the second middle plate 220 in parallel with each other and are fixedly connected to the front plate 218 and the rear plate 221 at respective both ends, and distances between each two adjacent optical axes 217 of the four optical axes 217 are equally arranged on the front plate 218, the first middle plate 219, the second middle plate 220, and the rear plate 221, respectively. In other embodiments, the number of the optical axes 217 may also be three or five, the optical axes 217 pass through the linear bearings 216 on the first middle plate 219 and the second middle plate 220 in parallel with each other and are fixedly connected to the front plate 218 and the rear plate 221 respectively at two ends, and the distances between every two adjacent optical axes 217 are equally arranged on the front plate 218, the first middle plate 219, the second middle plate 220 and the rear plate 221 respectively. In other embodiments, the number of the optical axes 217 is three, four, or five, the optical axes 217 pass through the linear bearings 216 on the first middle plate 219 and the second middle plate 220, respectively, in parallel with each other and are fixedly connected to the front plate 218 at respective one ends, and distances between every two adjacent optical axes 217 are equally arranged on the front plate 218, the first middle plate 219, the second middle plate 220, and the rear plate 221, respectively. The optical axis 217 may move and act as a guide.
The semi-cylindrical collision head 222 is fixedly connected to the front plate 218 via a connection member 223, and the tension/pressure sensor 23 is fixedly installed between the connection member 223 and the semi-cylindrical collision head 222. In one embodiment, a positioning bracket (not shown) is disposed between the second middle plate 220 and the rear plate 221, and the positioning bracket is fixedly connected to the second middle plate 220 by a fastener. A third lower cross plate (not shown) is further provided between the second middle plate 220 and the rear plate 221, one end of which is fixedly connected to the rear plate 221 by a fastener, and the other end of which is fixedly connected to the first lower cross plate 213 and the second lower bracket 132 by an M30 fastening bolt. The drive system may be fixed to the upper side of the second upper cross plate 212 of the fixed portion 21 or to a cross bar (not shown) between the second upper bracket 122 and the third upper bracket 123.
As shown in fig. 1, 2 and 4, a step 37 is fixed to an upper face of one end of the slide table 31 of the slide table apparatus 3 adjacent to the stage 1, a battery tool 32 is fixed to an upper face of one end of the slide table 31 adjacent to the stage 1, and the battery tool 32 abuts against the step 37. As shown in fig. 2, the cross-sectional shape of the battery tool 32 is trapezoidal, and the shape of the inclined surface of the battery tool 32 adjacent to the stage 1 matches the shape of the inclined surface of the step 37. The battery pack 35 is fixed on the battery tool 32 through a fastener 36, and a battery (not shown) is placed in the battery pack 35. The supporting structure 33 includes two diagonal rods 331, two straight rods 332, a first cross rod 333 and a second cross rod 334, the supporting structure 33 is fixed on the upper surface of one side of the sliding table 31 far away from the table frame 1 through the two diagonal rods 331 and the two straight rods 332, and two positioning rods 335 and a sliding rod 337 are fixed between the first cross rod 333 and the second cross rod 334. The positioning device 336 is fixed positionally adjustable on a sliding bar 337, and a camera (not shown) can be fixed on a projection of the positioning device 336 facing the gantry 1.
The battery crash test method using the battery crash test apparatus of the present invention includes the steps of:
the method comprises the following steps: the optical axis 217 of the movable portion 22 of the collision structure 2, the front plate 218, the connecting member 223, the tension and pressure sensor 23, and the semi-cylindrical collision head 222 are sequentially mounted on the rack 1, and the battery pack 35 to be measured is fixed on the slide table 31 by the battery tool 32, and a mark such as a red tape or other obvious mark is made on the battery pack 35.
Step two: and closing the entrance guard and opening the light supplement lamp.
Step three: the digital television receiver is respectively connected with a camera and a DTS data acquisition system 34, wherein the frame number of the camera is 1000, and the acquisition frequency of the DTS data acquisition system 34 is 20000 Hz.
Step four: the speed and quality parameters of the slide table device 3 are set.
Step five: when the battery impact test is started, the slide table 31 of the slide table apparatus 3 is automatically moved to a position of about 5.7 m toward the rack 1 by an actuating system (not shown), and the distance between the battery pack 35 and the semi-cylindrical impact head 222 is adjusted so that the triggering time T02 of the DTS data acquisition system 34 coincides with the contact time T01 of the battery pack 35 and the semi-cylindrical impact head 222, that is, T01 is equal to T02.
Step six: the semi-cylindrical collision head 222 is released by starting the driving system of the collision structure 2, and the semi-cylindrical collision head 222 moves toward the slide table device 3 and turns off the light supplement lamp after the pre-collision with the battery pack 35 is finished.
Step seven: the data is collated to determine the deformation amount range of the battery pack 35.
Before the fifth step, the whole rack 1 is subjected to the stress simulation by FEA (finite element analysis), so that the structure of the rack 1 meets the minimum requirement of a battery collision test, and the deformation and the rigidity are ensured to be sufficient.
In step seven, collating data includes: taking pictures and measuring on site for detecting damage; analyzing the change of the value acquired by the pull pressure sensor 23, finding out a 150kn (kilonewton) critical point, and determining the time t 1; downloading and storing the video of the camera, analyzing the change of the mark on the battery pack 35 by using software to calculate the displacement of the battery pack 35, and artificially calculating the deformation of the battery pack 35 by using the resolution of the camera; converting the data format of the DTS data acquisition system 34, deriving an acceleration curve, integrating the acceleration curve into a displacement curve for 2 times, and searching the displacement of the sliding table 31 corresponding to t1, wherein the displacement of the sliding table 31 is equal to the deformation of the battery pack 35; the amount of deformation of the battery pack 35 calculated using the data of the camera and the amount of deformation of the battery pack 35 calculated using the data of the DTS data acquisition system 34 are compared, and the final deformation amount range of the battery pack 35 is determined.
The battery collision test device can perform collision test on the battery pack 35 of the new energy automobile and verify the safety performance of the battery. The battery collision test device can be used for testing battery collision, can obtain the deformation and energy generated when the battery pack 35 is collided, has high test repeatability, and can be widely used for vehicles using batteries as power vehicle energy sources.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A battery collision test device is characterized by comprising a rack, a collision structure and a sliding table device, wherein,
the collision structure includes a fixed portion fixedly coupled within the stage, a movable portion having a portion slidably coupled in the fixed portion, and a driving system fixed to the fixed portion and controlling a semi-cylindrical collision head of the movable portion located outside the stage;
the sliding table device comprises a sliding table, a battery tool, a DTS data acquisition system and a support structure, wherein the battery tool, the support structure and the DTS data acquisition system are fixedly arranged on the sliding table, the distance between the battery tool and the rack is smaller than the distance between the support structure and the rack, and the DTS data acquisition system is positioned below the support structure;
the sliding table is slidably close to the semi-cylindrical collision head of the collision structure, so that the triggering time of the DTS data acquisition system is consistent with the contact time of the battery pack fixedly mounted on the battery tool and the semi-cylindrical collision head.
2. The battery crash test apparatus of claim 1, wherein the stand comprises two side support structures, an upper support structure disposed between and fixedly connected to the two side support structures, respectively, and a lower support structure disposed between and fixedly connected to the two side support structures, respectively, below the upper support structure.
3. The battery crash test apparatus of claim 2, wherein said side bracket structure comprises a barrier bracket, a middle bracket, a bottom bracket, a first side bracket, a second side bracket and a third side bracket, wherein said barrier bracket, said middle bracket and said bottom bracket are arranged parallel to each other and all parallel to the ground, said first side bracket, said second side bracket and said third side bracket are arranged parallel to each other and have respective ends fixedly connected to said barrier bracket and said bottom bracket, respectively, and said middle bracket is also fixedly connected to said first side bracket, said second side bracket and said third side bracket, respectively.
4. The battery crash test apparatus of claim 3, wherein said upper bracket structure comprises a first upper bracket, a second upper bracket and a third upper bracket, wherein said first upper bracket, said second upper bracket and said third upper bracket are disposed parallel to each other on a same horizontal plane and are fixedly connected at respective ends to said barrier brackets of said two side bracket structures, respectively.
5. The battery crash test apparatus according to claim 4, wherein the lower bracket structure includes a first lower bracket and a second lower bracket, wherein the first lower bracket and the second lower bracket are disposed in parallel and are fixedly connected at respective both ends to the middle brackets of the two side bracket structures, respectively, two diagonal brackets are fixedly connected between the first lower bracket and the second upper bracket, the two diagonal brackets are located at both sides of the fixed portion of the crash structure, and two connection brackets are fixedly connected between the second lower bracket and the second upper bracket, the two connection brackets are located at both sides of the fixed portion of the crash structure.
6. The battery crash test apparatus according to claim 5, wherein the fixing portion of the crash structure comprises a first upper cross plate disposed below the first and second upper brackets, a second upper cross plate disposed above the first and second lower brackets and fixedly connected to the first and second lower brackets by fasteners, a first middle plate disposed between the first upper cross plate and the first lower cross plate and fixedly connected at both ends to the first upper cross plate and the first lower cross plate by fasteners, a second middle plate, a fool-proof safety plate, and a linear bearing, both ends of the second upper cross plate and the second lower cross plate are fixedly connected to the first middle plate and the second middle plate respectively through fasteners.
7. The battery crash test apparatus according to claim 6, wherein said movable portion of said crash structure comprises a front plate, four optical axes, a rear plate and a semi-cylindrical crash contact, said four optical axes passing through said linear bearings on said first middle plate and said second middle plate, respectively, in parallel with each other and having respective both ends fixedly connected to said front plate and said rear plate, respectively, and distances between each two adjacent optical axes of said four optical axes are arranged on said front plate, said first middle plate, said second middle plate and said rear plate, respectively, equally.
8. A battery crash test method using the battery crash test apparatus according to any one of claims 1 to 7, characterized by comprising the steps of:
the method comprises the following steps: the method comprises the following steps that an optical axis, a front plate, a connecting part, a pull pressure sensor and a semi-cylindrical collision head of a movable part of a collision structure are sequentially arranged on a rack, a battery pack to be detected is fixed on a sliding table of sliding table equipment through a battery tool, and the battery pack is marked;
step two: closing the entrance guard, and opening the light supplement lamp;
step three: the system is respectively connected with a camera and a DTS data acquisition system;
step four: setting speed and quality parameters of the sliding table equipment;
step five: starting a battery collision test, wherein the sliding table of the sliding table equipment automatically moves to a set position towards the rack under the action of an actuating system, and the distance between the battery pack and the semi-cylindrical collision head is adjusted, so that the triggering time of the DTS data acquisition system is consistent with the contact time of the battery pack and the semi-cylindrical collision head;
step six: releasing the semi-cylindrical collision head by starting a driving system of a collision structure, wherein the semi-cylindrical collision head moves towards the sliding table equipment and turns off a light supplement lamp after pre-collision with the battery pack is finished;
step seven: and (4) sorting the data and determining the deformation range of the battery pack.
9. The battery crash test method of claim 8, wherein the number of frames of the camera is 1000, and the collection frequency of the DTS data collection system is 20000 Hz.
10. The battery crash test method according to claim 9, wherein in step seven, the deformation amount of the battery pack calculated using the data of the camera and the deformation amount of the battery pack calculated using the data of the DTS data acquisition system are compared to determine the deformation amount range of the battery pack.
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| CN201911405358.1A CN110926750A (en) | 2019-12-31 | 2019-12-31 | Battery collision test device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304549A (en) * | 2020-09-23 | 2021-02-02 | 中汽研汽车检验中心（天津）有限公司 | Dynamic extrusion testing device and method for battery pack assembly |
| CN113188742A (en) * | 2021-04-01 | 2021-07-30 | 苏州华维诺智能科技有限公司 | Battery pack impact experiment device and method thereof |
| CN114236398A (en) * | 2021-09-18 | 2022-03-25 | 军事科学院系统工程研究院军事新能源技术研究所 | Test system for safety of hydrogen fuel cell power generation system |
| CN114646446A (en) * | 2022-02-23 | 2022-06-21 | 湖北文理学院 | Battery collision test device |
| WO2023016065A1 (en) * | 2021-08-09 | 2023-02-16 | 宁德时代新能源科技股份有限公司 | Battery pack safety monitoring method and apparatus, device, system, and storage medium |
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2019
- 2019-12-31 CN CN201911405358.1A patent/CN110926750A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304549A (en) * | 2020-09-23 | 2021-02-02 | 中汽研汽车检验中心（天津）有限公司 | Dynamic extrusion testing device and method for battery pack assembly |
| CN113188742A (en) * | 2021-04-01 | 2021-07-30 | 苏州华维诺智能科技有限公司 | Battery pack impact experiment device and method thereof |
| WO2023016065A1 (en) * | 2021-08-09 | 2023-02-16 | 宁德时代新能源科技股份有限公司 | Battery pack safety monitoring method and apparatus, device, system, and storage medium |
| CN114236398A (en) * | 2021-09-18 | 2022-03-25 | 军事科学院系统工程研究院军事新能源技术研究所 | Test system for safety of hydrogen fuel cell power generation system |
| CN114646446A (en) * | 2022-02-23 | 2022-06-21 | 湖北文理学院 | Battery collision test device |
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