CN211121870U - Battery package bottom ball hits test device - Google Patents
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- CN211121870U CN211121870U CN201921730955.7U CN201921730955U CN211121870U CN 211121870 U CN211121870 U CN 211121870U CN 201921730955 U CN201921730955 U CN 201921730955U CN 211121870 U CN211121870 U CN 211121870U
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Abstract
The utility model discloses a battery package bottom ball hits test device. The device comprises a base, a battery pack mounting and debugging mechanism and a rigid ball launching mechanism, wherein the length, the width and the height of the base are respectively defined as X, Y, Z shafts, a rectangular groove is formed in the center of the upper surface, and the bottom of the rigid ball launching mechanism is arranged in the rectangular groove through a guide rail sliding block with X, Y two degrees of freedom; the battery pack mounting and debugging mechanism comprises two mounting and debugging units which are symmetrically arranged at two ends of the upper surface of the base, and the test battery pack is fixed between the two mounting and debugging units through a mounting clamp; each installation and debugging unit has X, Y, Z three degrees of freedom and is used for testing battery packs with different sizes and adjusting the ball hitting positions of the battery packs; the rigid ball launching mechanism comprises a rigid ball and an air cylinder, the air cylinder is used for controlling and adjusting the output force of the rigid ball, and the guide rail sliding block at the bottom of the rigid ball launching mechanism realizes the adjustment of a ball hitting position. The utility model has the advantages of simple structure, high accuracy of test result.
Description
Technical Field
The invention belongs to the technical field of battery packs of electric automobiles, and particularly relates to a ball impact test device at the bottom of a battery pack.
Background
The increasing number of domestic automobiles makes the energy safety problem become more and more serious, and new energy automobiles, particularly electric automobiles, are vigorously developed in order to reduce the dependence on fossil fuels. Aiming at the problems of the common traveling mileage of the electric automobiles, each electric automobile enterprise improves the energy density of the battery pack to the utmost extent so as to have more battery electric quantity in the same battery pack installation space, and further improve the cruising ability of the whole automobile.
Since the high energy density and high reliability of the battery pack are a pair of spears, the reliability of the battery pack structure is considered to be important while pursuing the high energy density. In the driving process of the electric automobile, the road condition is complicated, and the whole automobile needs to meet certain rigidity, strength, durability and NVH performance requirements. The battery pack, as one of the important components of the electric vehicle, is also subjected to various severe working conditions, so that the country sets strict safety requirements and corresponding test methods for the battery pack for the electric vehicle. National standard test items can well detect whether the structural design of the battery pack is reliable or not, but no corresponding test standard exists for a bottom supporting working condition possibly encountered by an electric automobile in the driving process (the so-called bottom supporting means that an automobile chassis touches the ground or a ground protrusion in the driving process, and splashed stones impact the bottom and belong to the bottom supporting), so that the importance of protecting the bottom of the battery pack is ignored by many enterprises.
Patent CN107402136B discloses a test device for simulating electric automobile battery package bottom collision, and the device body includes collision dolly, battery package fixing base to and with the striking component of the front end connection of collision dolly, be located the ramp of battery package below, vertically set up subaerial dolly and pull the track, establish between collision dolly and battery package fixing base and be located the dolly and pull the dolly buffer member of track middle part both sides. The battery pack bottom collision test device can perform collision tests on different positions of the bottom of a battery pack according to test requirements, but has the problems of complex structure, high test space resource requirement and low precision.
Disclosure of Invention
The invention aims to provide a battery pack bottom ball impact test device which is simple in structure, high in precision and strong in reliability.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a battery package bottom ball hits test device, includes base, battery package installation adjustment mechanism and rigid ball launching mechanism, wherein:
The base is of a cuboid structure, and the length, the width and the height of the cuboid are defined as X, Y, Z axes respectively; the center of the upper surface of the base is provided with a rectangular groove, and the bottom of the rigid ball launching mechanism is arranged in the rectangular groove through guide rail sliding blocks with X, Y degrees of freedom;
The battery pack mounting and debugging mechanism comprises two mounting and debugging units with the same structure, the two mounting and debugging units are symmetrically arranged at two ends of the upper surface of the base, and the test battery pack is fixed between the two mounting and debugging units through a mounting fixture; each installation and debugging unit has X, Y, Z three degrees of freedom and is used for testing test battery packs with different sizes and adjusting the ball hitting positions of the test battery packs;
The rigid ball launching mechanism is positioned below the battery pack mounting and debugging mechanism and comprises a rigid ball and a cylinder; the cylinder is used for controlling and adjusting the output of the rigid ball and vertically launching the rigid balls with different diameters upwards; the guide rail sliding block at the bottom of the rigid ball launching mechanism realizes the adjustment of the ball hitting position under the control of the ball screw.
Furthermore, the upper surface of the base is respectively provided with an X-direction guide rail for installing and debugging the mechanism along two long edges, and the bottom of the rectangular groove of the base is respectively provided with an X-direction guide rail for emitting the mechanism along two long edges.
Furthermore, each installation and debugging unit in the battery pack installation and debugging mechanism respectively comprises a balancing weight, an installation and debugging mechanism Y-direction guide rail, an installation and debugging mechanism Y-direction sliding block, a rack, an installation and debugging mechanism Z-direction sliding block and an installation platform;
The number of the balancing weights is 2, and the balancing weights are respectively arranged above the X-direction guide rail of the installation and debugging mechanism and are used as matched X-direction sliding blocks; the Y-direction guide rail of the installation and debugging mechanism is fixed on the upper surfaces of the two balancing weights and connects the two balancing weights into a whole; a mounting and debugging mechanism Y-direction sliding block matched with the guide rail is arranged above the mounting and debugging mechanism Y-direction guide rail, and the rack is fixed on the mounting and debugging mechanism Y-direction sliding block; the racks in the two installation and debugging units are arranged oppositely, guide rails are arranged on the surfaces of opposite sides along the Z direction respectively, and Z-direction sliding blocks of the installation and debugging mechanisms are arranged in a matched manner with the Z-direction guide rails; the mounting platform is welded on the Z-direction sliding block of the mounting and debugging mechanism and used for fixing the mounting clamp.
Furthermore, the rigid ball launching mechanism comprises a launching mechanism X-direction sliding block, a launching mechanism Y-direction guide rail, a launching mechanism Y-direction sliding block, an air cylinder and a rigid ball;
The launching mechanism X-direction sliding block is arranged above the launching mechanism X-direction guide rail and can move along the guide rail in the X direction; a Y-direction guide rail of the launching mechanism is fixed above the X-direction sliding block of the launching mechanism, and the Y-direction sliding block of the launching mechanism is arranged above the Y-direction guide rail of the launching mechanism and can move along the Y-direction guide rail; the rigid ball is placed in a cavity with an opening at the top, the bottom of the cavity is provided with an air cylinder, and the air cylinder is fixed on the upper surface of the sliding block in the Y direction of the launching mechanism.
Furthermore, one side of the mounting fixture is provided with a bolt hole consistent with a mounting point of the test battery pack, and the other side of the mounting fixture is matched with a fixing hole position of the test device.
Furthermore, dovetail groove type matching modes are adopted between the installation and debugging mechanism X-direction guide rail and the balancing weight, between the installation and debugging mechanism Y-direction sliding block and the installation and debugging mechanism Y-direction guide rail and between the installation and debugging mechanism Z-direction sliding block and the Z-direction guide rail, and the movement of the installation platform in the X, Y, Z axis direction is realized.
Further, the X-direction slide block of the launching mechanism is controlled to move along the X-direction guide rail of the launching mechanism in the X direction through the transmission of the ball screw, and the Y-direction slide block of the launching mechanism is controlled to move along the Y-direction guide rail of the launching mechanism in the Y direction, so that the ball hitting positions in the X direction and the Y direction are controlled.
Furthermore, a piston capable of moving up and down is arranged in the cylinder, and a rubber pad with a guiding effect is arranged at the joint of the bottom of the cavity and the cylinder, so that the rigid ball is positioned in the middle of the launching cavity under the action of gravity.
Compared with the prior art, the invention has the following remarkable advantages: (1) the test device is adopted to simulate the condition that the bottom of the battery pack is impacted by stones in the running process of the vehicle, so that the reliability of the bottom of the battery pack is scientifically and reasonably verified; (2) the upper layer and the lower layer of the base are respectively provided with a guide rail of the debugging mechanism in the X direction and a guide rail of the launching mechanism in the X direction, and the ball hitting position is accurately controlled through the matching between the guide rails and the sliding blocks, so that the accuracy and the reliability of the test result are improved; (3) the test of the battery packs with different sizes can be realized by designing and installing the clamp, the universality is strong, and the degree of dependence of the device on the space of a test site is reduced; (3) the rigid ball is launched by the cylinder, so that the ball impact force can be accurately controlled, the advantage of universality of a ball impact test bed is achieved, and meanwhile, the cylinder launching has the advantages of low failure rate, simplicity and convenience in maintenance, low cost and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of the battery pack bottom ball impact test device of the present invention.
Fig. 2 is a front view of the ball impact test device at the bottom of the battery pack.
Fig. 3 is a schematic diagram of a battery pack mounting and debugging mechanism of the battery pack bottom ball impact test device of the invention.
Fig. 4 is a schematic diagram of a rigid ball launching mechanism of the battery pack bottom ball impact test device of the invention.
Fig. 5 is a schematic diagram of the principle of the rigid ball launching mechanism of the battery pack bottom ball impact test device.
Reference numbers in the figures: 001 test battery pack, 002 mounting fixture, 003 battery pack mounting and debugging mechanism, 004 rigid ball launching mechanism, 005 base, 301 mounting platform, 302 mounting and debugging mechanism Z-direction slide block, 303 frame, 304 mounting and debugging mechanism Y-direction slide block, 305 mounting and debugging mechanism Y-direction guide rail, 306 balancing weight, 401 rigid ball, 402 air cylinder, 403 launching mechanism Y-direction slide block, 404 launching mechanism Y-direction guide rail, 405 launching mechanism X-direction slide block, 406 piston, 407 rubber pad, 501 mounting and debugging mechanism X-direction guide rail and 501 launching mechanism X-direction guide rail.
Detailed Description
With reference to fig. 1-2, the battery pack bottom ball impact test device of the present invention comprises a base 005, a battery pack installation and debugging mechanism 003, and a rigid ball launching mechanism 004, wherein:
The base 005 is a cuboid structure, and the length, width and height of the cuboid are defined as X, Y, Z axes respectively; a rectangular groove is formed in the center of the upper surface of the base 005, and the bottom of the rigid ball launching mechanism 004 is arranged in the rectangular groove through guide rail sliders with X, Y degrees of freedom;
The battery pack mounting and debugging mechanism 003 comprises two mounting and debugging units with the same structure, the two mounting and debugging units are symmetrically arranged at two ends of the upper surface of the base 005, and the test battery pack 001 is fixed between the two mounting and debugging units through a mounting clamp 002; each installation and debugging unit has X, Y, Z three degrees of freedom and is used for testing test battery packs 001 with different sizes and adjusting the ball hitting positions of the test battery packs 001;
The rigid ball launching mechanism 004 is positioned below the battery pack installation and debugging mechanism 003 and comprises a rigid ball 401 and an air cylinder 402; the air cylinder 402 is used for controlling and adjusting the force of the rigid ball 401 so as to vertically launch the rigid balls 401 with different diameters upwards; the guide rail slide block at the bottom of the rigid ball launching mechanism 004 realizes the adjustment of the ball hitting position under the control of the ball screw.
As a specific example, the upper surface of the base 005 is provided with one mounting and debugging mechanism X-direction guide rail 501 along each of two long sides, and the bottom of the rectangular groove of the base 005 is provided with one launching mechanism X-direction guide rail 502 along each of two long sides.
With reference to fig. 3, each installation and debugging unit in the battery pack installation and debugging mechanism 003 includes a counterweight 306, an installation and debugging mechanism Y-direction guide rail 305, an installation and debugging mechanism Y-direction slider 304, a frame 303, an installation and debugging mechanism Z-direction slider 302, and an installation platform 301;
The number of the balancing weights 306 is 2, and the balancing weights are respectively arranged above the X-direction guide rail 501 of the installation and debugging mechanism and are used as matched X-direction sliding blocks; the Y-direction guide rail 305 of the installation and debugging mechanism is fixed on the upper surfaces of the two balancing weights 306 and connects the two balancing weights into a whole; a mounting and debugging mechanism Y-direction sliding block 304 matched with the guide rail is arranged above the mounting and debugging mechanism Y-direction guide rail 305, and the rack 303 is fixed on the mounting and debugging mechanism Y-direction sliding block 304; the racks 303 in the two installation and debugging units are arranged oppositely, and guide rails are arranged on the surfaces of the opposite sides along the Z direction respectively, and the Z-direction slide block 302 of the installation and debugging mechanism is arranged in a matching way with the Z-direction guide rails; the mounting platform 301 is welded on the Z-direction slider 302 of the mounting and debugging mechanism and used for fixing the mounting clamp 002.
With reference to fig. 4 to 5, the rigid ball launching mechanism 004 includes a launching mechanism X-direction slider 405, a launching mechanism Y-direction guide rail 404, a launching mechanism Y-direction slider 403, a cylinder 402, and a rigid ball 401;
The launching mechanism X-direction slider 405 is disposed above the launching mechanism X-direction guide rail 502 and is capable of moving in the X direction along the guide rail; a launching mechanism Y-direction guide rail 404 is fixed above the launching mechanism X-direction sliding block 405, and the launching mechanism Y-direction sliding block 403 is arranged above the launching mechanism Y-direction guide rail 404 and can move along the guide rail in the Y direction; the rigid ball 401 is placed in a cavity with an opening at the top, the bottom of the cavity is provided with a cylinder 402, and the cylinder 402 is fixed on the upper surface of a sliding block 403 in the Y direction of the launching mechanism.
As a specific example, the mounting fixture 002 is provided with bolt holes on one side in accordance with the mounting points of the test battery pack 001, and the other side is matched with the test device fixing hole positions.
As a specific example, dovetail groove type matching is adopted between the mounting and debugging mechanism X-direction guide 501 and the counterweight block 306, between the mounting and debugging mechanism Y-direction slider 304 and the mounting and debugging mechanism Y-direction guide 305, and between the mounting and debugging mechanism Z-direction slider 302 and the Z-direction guide, but not limited to the dovetail groove type matching, so as to realize the movement of the mounting platform 301 in the X, Y, Z axis direction.
As a specific example, the movement of the launching mechanism X-direction slider 405 in the X direction along the launching mechanism X-direction guide rail 502 and the movement of the launching mechanism Y-direction slider 403 in the Y direction along the launching mechanism Y-direction guide rail 404 are controlled by the transmission of a ball screw, thereby controlling the ball striking positions in the X direction and the Y direction.
As a specific example, a piston 406 capable of moving up and down is arranged in the cylinder 402, and a rubber pad 407 with guiding function is arranged at the connection between the bottom of the cavity and the cylinder, so that the rigid ball 401 is located in the middle of the launching cavity under the action of gravity, as shown in fig. 5 in particular.
The invention discloses a test method of a battery pack bottom ball impact test device, which comprises the following steps:
Step 1, selecting weak areas at the bottom to carry out a ball impact test one by one according to the actual situation of the battery pack structure;
Step 2, selecting 70mm (the size of the stone brought up by the actual automobile tire) as the suggested diameter of the rigid small ball;
Step 3, the output of the rigid ball is suggested to be half of the full load mass of the whole vehicle;
And 4, after the ball impact test, standing and observing the battery pack for two hours, wherein the battery pack can still be used if the following requirements are met:
The battery pack box body is not damaged and has no obvious visible cracks;
The deformation amount of the battery pack at the hitting position of the rigid ball is smaller or the invasion amount is smaller than 5 mm;
And the water cooling plate, the pipeline, the electric core and the like in the battery pack are not damaged.
The testing device is used for simulating the condition that the bottom of the battery pack is impacted by stones in the running process of a vehicle, and provides a scientific and reasonable bottom ball impact testing method for the battery pack of the electric automobile, so that the bottom reliability of the battery pack is verified. Meanwhile, the universality of battery packs with different sizes can be realized through the design and installation of the clamp, and the ball hitting position can be accurately controlled through the matching of the sliding block of the adjusting device and the track; through adjusting the speed governing valve, can accurate control ball power of hitting's size, reduce the device to the space degree of dependence in test site.
The technical solution of the battery pack ball impact test device will be described in detail with reference to the accompanying drawings and embodiments.
Examples
This embodiment battery package bottom ball hits test device, including base 005, battery package installation debugging mechanism 003 and rigidity ball launching mechanism 004, set for the length direction that the X direction is test device, the Y direction is test device's width direction, and the Z direction is test device's direction of height:
The battery package passes through battery package installation and debugging mechanism 003 to be fixed on test device, and this battery package installation and debugging mechanism 003 is total three degrees of freedom, and the requirement of testing not unidimensional battery package is realized to the installation roof beam that can be on the mobile device, the position of adjustable battery package ball simultaneously hits.
The rigid ball launching mechanism 004 can vertically launch the rigid balls 401 with different diameters (the diameter of the small ball is required to be less than or equal to 150mm), and the output of the rigid balls 401 is controlled and adjusted by the speed of the air cylinder 402 (the output of the small ball is required to be less than or equal to 30 kN). The rigid ball launching mechanism 004 is loaded on a guide rail slide block with two degrees of freedom, and the precision requirement of a ball hitting position can be met under the precise control of a ball screw.
The battery pack bottom ball impact test apparatus is shown in fig. 1, and includes a battery pack attachment adjustment mechanism 003 as shown in fig. 3, a rigid ball launching mechanism 004 as shown in fig. 4, and a base 005. Each installation and debugging unit in the battery pack installation and debugging mechanism 003 comprises a balancing weight 306, an installation and debugging mechanism Y-direction guide rail 305, an installation and debugging mechanism Y-direction sliding block 304, a rack 303, an installation and debugging mechanism Z-direction sliding block 302 and an installation platform 301. The rigid ball launching mechanism 004 includes a launching mechanism X-direction slider 405, a launching mechanism Y-direction guide rail 404, a launching mechanism Y-direction slider 403, an air cylinder 402, and a rigid ball 401.
The test battery pack 001 is fixed on the test device through a mounting fixture 002, one side of the mounting fixture needs to be provided with bolt holes consistent with mounting points of the test battery pack, and the other side of the mounting fixture needs to be matched with fixing hole positions of the test device. Therefore, the installation test of the battery packs with different sizes can be realized only by designing a simple installation clamp aiming at the test battery packs with different sizes. What link to each other with sectional fixture is test device's mounting platform 301, and mounting platform passes through the mode beading of strengthening rib on installation and debugging mechanism Z direction slider 302, can adjust the height of battery package bottom and rigidity ball in the Z direction from this to the height that the stone splashes in the real road conditions of realization simulation. The bottom of the rack 303 where the guide rail in the Z direction is located is provided with a guide rail sliding block in the Y direction, and the Y direction sliding block 304 of the installation and debugging mechanism is tightly matched with the Y direction guide rail 305 of the installation and debugging mechanism in a dovetail groove type, so that the connection strength of the rack and the bottom can be improved, and the movement of the battery pack in the Y direction can be controlled. Two cuboid clump weights 306 are arranged right below the Y-direction guide rail slide block and are respectively positioned at the left side and the right side of the machine frame 303. The clump weight 306 contains a material with a relatively high density, so that the mass of the test device after the battery pack is installed can be balanced. Meanwhile, the counterweight block 306 also serves as an X-direction slider of the installation and debugging mechanism, and the ball hitting position of the test battery pack 001 in the X direction can be adjusted by moving the counterweight block 306 in the X direction. In addition, if there are battery packs with different sizes, the counterweight 306 can be moved to adjust the installation space.
The other main part of the battery pack bottom ball impact test device is a rigid ball launching mechanism 004, and the main working principle of the battery pack bottom ball impact test device is shown in fig. 5. The rigid ball 401 is placed in a cavity provided with a guide mechanism, a cylinder 402 is arranged below the cavity, and a piston 406 in the cylinder can move up and down. After the gas enters the cylinder 402, the piston 406 acts on the rigid ball 401 rapidly, so that the rigid ball is launched at a certain initial velocity, and the whole launching process is completed. The launching mechanism is provided with a rubber pad 407 with guiding function, which is adhered above the cylinder 402 to ensure that the rigid ball 401 is positioned in the middle of the launching cavity under the action of gravity. Meanwhile, the air cylinder 402 is limited and buffered to a certain extent. The whole emitting part is fixed on a sliding block with X and Y directions, and the ball hitting positions in the X direction and the Y direction can be accurately controlled through the transmission of a ball screw. It is noted that the displacement of the emitting portion in the X and Y directions is limited, and adjustment of the ball striking position to a greater extent is required to be coordinated with the guide rail of the battery pack mounting adjustment mechanism 003. The diameter of the rigid ball 401 is not fixed and can be changed according to the request of the experimenter, but the diameter cannot exceed 150mm at most. The output of the rigid ball 401 needs to be realized by controlling the size of the starting speed regulating valve.
The base 005 of the test device is permanently fixed on a flat ground, and the upper layer and the lower layer of the base 005 are respectively provided with a launching mechanism X-direction guide rail 501 and a launching mechanism X-direction guide rail 502. In consideration of equipment space and test height, the rigid ball launching mechanism 004 adopts pneumatic launching and is positioned in the middle of the lower layer of the base 005, and other transmission modes and position settings belong to the protection range of the patent. Through the mode, the degree of dependence of the device on the test site space is reduced.
The test method of the battery pack bottom ball impact test device in the embodiment is as follows:
(1) Preparation before the test: checking whether cracks, process defects and the like exist at the ball hitting position at the bottom of the test battery pack; determining the size of a rigid ball; determining the output force of the rigid ball; determining the ball hitting position and height; checking whether the test device is normal (whether bolts are loosened, the guide rail moves normally and the like);
(2) Installing a battery pack, and adjusting the approximate position and height of the ball impact of the battery pack through an installation and debugging mechanism;
(3) The accurate hitting position of the battery pack ball is adjusted through a rigid ball launching mechanism;
(4) Setting the size of a rigid ball, the magnitude of output force and the like, and putting the rigid ball into the launching cavity;
(5) After the safety of personnel is ensured, a ball impact test is carried out, and the battery pack is kept still for 5 minutes after the test is finished. If a plurality of ball hitting positions exist, repeating the steps of 2-5;
(6) And (5) taking down the battery pack. After standing for 2 hours, the appearance of the battery pack was checked.
After the ball is hit at the bottom, the battery pack can still be used after meeting the following requirements:
The battery pack box body is not damaged and has no obvious visible cracks;
The deformation amount of the battery pack at the hitting position of the rigid ball is smaller or the invasion amount is smaller than 5 mm;
And the water cooling plate, the pipeline, the electric core and the like in the battery pack are not damaged.
In the battery pack ball impact test method provided in this embodiment, strict and reasonable evaluation criteria are set based on safety and durability considerations. The embodiments described herein are only a few embodiments of this patent and are not complete embodiments. Various structural changes and embodiments based on the patent belong to the protection scope of the patent.
Claims (8)
1. The utility model provides a battery package bottom ball test device, its characterized in that includes base (005), battery package installation debugging mechanism (003) and rigidity ball launching mechanism (004), wherein:
The base (005) is of a cuboid structure, and the length, the width and the height of the cuboid are defined as X, Y, Z axes respectively; a rectangular groove is formed in the center of the upper surface of the base (005), and the bottom of the rigid ball launching mechanism (004) is arranged in the rectangular groove through guide rail sliders with X, Y degrees of freedom;
The battery pack mounting and debugging mechanism (003) comprises two mounting and debugging units with the same structure, the two mounting and debugging units are symmetrically arranged at two ends of the upper surface of the base (005), and the test battery pack (001) is fixed between the two mounting and debugging units through a mounting clamp (002); each installation and debugging unit has X, Y, Z three degrees of freedom and is used for testing test battery packs (001) with different sizes and adjusting the ball hitting positions of the test battery packs (001);
The rigid ball launching mechanism (004) is positioned below the battery pack mounting and debugging mechanism (003) and comprises a rigid ball (401) and a cylinder (402); the air cylinder (402) is used for controlling and adjusting the output force of the rigid ball (401) and vertically launching the rigid balls (401) with different diameters upwards; the guide rail slide block at the bottom of the rigid ball launching mechanism (004) realizes the adjustment of the ball hitting position under the control of the ball screw.
2. The battery pack bottom ball impact test device according to claim 1, wherein the upper surface of the base (005) is provided with one mounting and debugging mechanism X-direction guide rail (501) along each of the two long sides, and the bottom of the rectangular groove of the base (005) is provided with one launching mechanism X-direction guide rail (502) along each of the two long sides.
3. The battery pack bottom ball hitting test device according to claim 2, wherein each mounting and debugging unit in the battery pack mounting and debugging mechanism (003) comprises a balancing weight (306), a mounting and debugging mechanism Y-direction guide rail (305), a mounting and debugging mechanism Y-direction sliding block (304), a rack (303), a mounting and debugging mechanism Z-direction sliding block (302) and a mounting platform (301);
The number of the balancing weights (306) is 2, and the balancing weights are respectively arranged above the X-direction guide rail (501) of the installation and debugging mechanism and serve as matched X-direction sliding blocks; a Y-direction guide rail (305) of the installation and debugging mechanism is fixed on the upper surfaces of the two balancing weights (306) and connects the two balancing weights into a whole; a mounting and debugging mechanism Y-direction sliding block (304) matched with the guide rail is arranged above the mounting and debugging mechanism Y-direction guide rail (305), and the rack (303) is fixed on the mounting and debugging mechanism Y-direction sliding block (304); the racks (303) in the two installation and debugging units are arranged oppositely, the surfaces of the opposite sides are respectively provided with a guide rail along the Z direction, and the Z-direction slide block (302) of the installation and debugging mechanism is arranged in a matching way with the Z-direction guide rail; the mounting platform (301) is welded on a Z-direction sliding block (302) of the mounting and debugging mechanism and used for fixing the mounting clamp (002).
4. The battery pack bottom ball impact test device according to claim 2, wherein the rigid ball launching mechanism (004) comprises a launching mechanism X-direction slide block (405), a launching mechanism Y-direction guide rail (404), a launching mechanism Y-direction slide block (403), an air cylinder (402) and a rigid ball (401);
The launching mechanism X-direction sliding block (405) is arranged above a launching mechanism X-direction guide rail (502) and can move along the guide rail in the X direction; a launching mechanism Y-direction guide rail (404) is fixed above the launching mechanism X-direction sliding block (405), and the launching mechanism Y-direction sliding block (403) is arranged above the launching mechanism Y-direction guide rail (404) and can move along the guide rail in the Y direction; the rigid ball (401) is placed in a cavity with an opening at the top, the bottom of the cavity is provided with a cylinder (402), and the cylinder (402) is fixed on the upper surface of a sliding block (403) in the Y direction of the launching mechanism.
5. The battery pack bottom ball impact test device according to claim 1, 2, 3 or 4, characterized in that the mounting clamp (002) is provided with bolt holes on one side which are consistent with the mounting points of the test battery pack (001), and the other side is matched with the test device fixing hole positions.
6. The battery pack bottom ball impact test device according to claim 3, wherein dovetail groove type matching modes are adopted between the mounting and debugging mechanism X-direction guide rail (501) and the counterweight block (306), between the mounting and debugging mechanism Y-direction slide block (304) and the mounting and debugging mechanism Y-direction guide rail (305), and between the mounting and debugging mechanism Z-direction slide block (302) and the Z-direction guide rail, so that the mounting platform (301) moves in the X, Y, Z-axis direction.
7. The bottom ball impact test device of the battery pack according to claim 4, wherein the transmission of the ball screw controls the movement of the launching mechanism X-direction slider (405) in the X direction along the launching mechanism X-direction guide rail (502) and the movement of the launching mechanism Y-direction slider (403) in the Y direction along the launching mechanism Y-direction guide rail (404), thereby controlling the ball impact positions in the X direction and the Y direction.
8. The battery pack bottom ball impact test device according to claim 4, characterized in that a piston (406) capable of moving up and down is arranged in the cylinder (402), and a rubber pad (407) with guiding function is arranged at the joint of the cavity bottom and the cylinder, so that the rigid ball (401) is positioned in the middle of the launching cavity under the action of gravity.
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| CN116296763A (en) * | 2023-05-12 | 2023-06-23 | 宁德时代新能源科技股份有限公司 | Battery pack ball impact testing device and testing method |
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| CN112051020A (en) * | 2020-08-14 | 2020-12-08 | 中国第一汽车股份有限公司 | Road surface impact resistance test method for battery pack of pure electric passenger vehicle |
| CN112051020B (en) * | 2020-08-14 | 2022-12-27 | 中国第一汽车股份有限公司 | Road surface impact resistance test method for battery pack of pure electric passenger vehicle |
| CN112229594A (en) * | 2020-10-16 | 2021-01-15 | 中国汽车工程研究院股份有限公司 | New energy automobile bottom impact test platform |
| CN112229594B (en) * | 2020-10-16 | 2024-03-12 | 中国汽车工程研究院股份有限公司 | New energy automobile bottom impact test bed |
| CN112697454A (en) * | 2020-12-04 | 2021-04-23 | 安徽江淮汽车集团股份有限公司 | Electric automobile bottom bump test device |
| CN113093032A (en) * | 2021-03-30 | 2021-07-09 | 芜湖奇达动力电池系统有限公司 | Electric vehicle battery pack bottom supporting test bench and test method |
| CN113093032B (en) * | 2021-03-30 | 2024-03-19 | 芜湖奇达动力电池系统有限公司 | Electric automobile battery pack support bottom test bench and test method |
| CN116296763A (en) * | 2023-05-12 | 2023-06-23 | 宁德时代新能源科技股份有限公司 | Battery pack ball impact testing device and testing method |
| CN116296763B (en) * | 2023-05-12 | 2023-10-17 | 宁德时代新能源科技股份有限公司 | Battery pack ball impact testing device and testing method |
| CN117147149A (en) * | 2023-10-31 | 2023-12-01 | 泰安九洲金城机械有限公司 | Rear axle performance detection equipment |
| CN117147149B (en) * | 2023-10-31 | 2024-01-09 | 泰安九洲金城机械有限公司 | Rear axle performance detection equipment |
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