CN217404028U - High-g-value mechanical impact test device for battery - Google Patents

Abstract

The utility model provides a high g of battery worth mechanical shock test device, including test rack, hoist engine, electromagnetism adsorption equipment and drop the platform, wherein, the top at the test rack is fixed to the hoist engine, inside the stay cord of hoist engine from the last test rack of introducing downwards, and stay cord end connection electromagnetism adsorption equipment, drop the platform setting inside the test rack, and drop platform left and right sides sliding connection on the curb plate of test rack, the upper portion that drops the platform can adsorb on electromagnetism adsorption equipment, during the test, the battery that awaits measuring is fixed on dropping the platform. Utilize the gravity whereabouts of battery to produce the mechanical shock test that strikes realization battery, compare with adopting falling ball whereabouts striking battery among the prior art, the acceleration peak value can reach very high value, and this test device still has simple structure, and is with low costs, characteristics such as easy realization.

Description

High g value mechanical shock test device of battery

Technical Field

The utility model relates to an electric automobile battery test technical field especially relates to a high g of battery worth mechanical shock test device.

Background

The electric vehicle is powered by a vehicle-mounted power supply, so that a battery is a key component, and the light weight and high energy density of a lithium battery become the first choice for more and more batteries of the electric vehicle. However, the safety problem of the lithium battery in the using process has been widely concerned, and the lithium battery can cause combustion when being impacted or collided by the outside, so that great potential safety hazards are brought to the whole vehicle.

In order to improve the safety performance of the lithium battery, the lithium battery needs to be subjected to impact test, the conventional mechanical impact test device of the battery mainly comprises a vibration table, a mechanical impact table and a simulation collision trolley, and the mechanical impact test is carried out through the three devices, wherein the main defects of the mechanical impact test are as follows:

1) the mechanical impact test is carried out through the vibration table, the acceleration peak value is low and is generally not more than 50g under the influence of factors such as the thrust of the vibration table, the quality of a table top and the like.

2) The mechanical impact test is carried out by the mechanical impact table and the simulated collision trolley, although the acceleration peak value is larger, the cost of a single test is higher.

Therefore, it is desirable to provide a high-g value mechanical impact testing device for batteries.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome the not enough among the prior art, the utility model provides a high g of battery worth mechanical shock test device carries out mechanical shock test to the battery through the mode of falling. The battery falling device is designed firstly, a battery is fixed on a falling platform, the falling platform and the falling device are restrained by a guide rail, and the falling platform is guaranteed to be always kept horizontal in posture in the falling process. An electromagnet device is arranged above the falling device, and a buffer device is arranged on the bottom platform below the falling device. Before the mechanical shock test is started, the battery falling platform is adsorbed above the falling device through the electromagnet device, and in the moment of starting the test, the electromagnet device releases the battery to fall off the platform, and the battery falling platform falls on the bottom buffer device. Different acceleration peak values corresponding to the mechanical shock test can be adjusted by adjusting the initial falling height, and the shock pulse width of the mechanical shock test can be adjusted by adjusting the buffer device of the bottom platform.

The utility model provides a technical scheme that its technical problem will adopt is: the utility model provides a high g value mechanical shock test device of battery, includes test rack, hoist engine, electromagnetism adsorption equipment and falls the platform, wherein, the hoist engine is fixed at the top of test rack, inside the stay cord of hoist engine from the top down introduced test rack, and stay cord end connection electromagnetism adsorption equipment, it sets up inside the test rack to fall the platform, and falls platform left and right sides sliding connection on the curb plate of test rack, the upper portion that falls the platform can adsorb on electromagnetism adsorption equipment, during the test, the battery that awaits measuring is fixed on falling the platform.

The test bench is of a hollow structure and comprises a top frame, left and right side plates and a bottom platform, wherein the top frame is composed of a plurality of parallel cross beams, two ends of each cross beam are fixedly connected with the tops of the left and right side plates respectively, each cross beam is vertically provided with at least two guide rails which are connected with a falling platform in a sliding mode, and the bottom platform is arranged at the bottom between the left and right side plates. The bottom platform of the test bench is made of steel materials.

In order to facilitate the installation of the winch, a winch mounting platform is arranged between the cross beams in the middle of the top of the frame, and a rope passing hole is formed in the winch mounting platform.

In order to adjust the impact pulse width of a mechanical impact experiment, a buffer device is further arranged on the bottom platform, the buffer device is further arranged on the bottom platform and comprises a plurality of buffer cushions, and the impact time can be changed by adjusting the hardness of the buffer cushions, so that the impact pulse width is adjusted.

In order to improve the stability of the test bench, a plurality of staggered reinforcing columns are arranged at the rear part of the test bench.

It is specific, it includes the backup pad to fall the platform, the equipartition has a plurality of fixed orificess that are used for fixed battery that awaits measuring in the backup pad, and as preferred, the fixed orifices is the screw hole, the vertical rectangular frame that is equipped with in the left and right sides of backup pad, rectangular frame's the outside is equipped with the spout that matches with guide rail quantity, is equipped with the supporting beam who spanes the backup pad between the top of left and right sides rectangular frame, the middle part of supporting beam be equipped with a supporting beam fixed connection's absorption iron plate.

In order to guarantee that the falling platform is in a horizontal state as much as possible when being hoisted and avoid the situation of being blocked by a guide rail in the rising process, the center of the adsorption iron block is positioned right above the gravity center of the falling platform.

The utility model has the advantages that: the utility model provides a pair of high g value mechanical shock test device of battery carries out mechanical shock test to the battery through falling the mode, utilizes the gravity whereabouts of battery to produce the mechanical shock test who strikes and realize the battery, compares with the ball whereabouts striking battery that adopts among the prior art that falls, and the acceleration peak value can reach very high value, and this test device still has simple structure, and is with low costs, characteristics such as easy realization.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the structure schematic diagram of the high-g value mechanical impact testing device of the battery of the utility model.

Fig. 2 is a schematic structural view of a test stage.

Figure 3 is a schematic structural view of the drop platform.

In the figure: 1. the device comprises a test bench, 11, a bench top, 12, a winch mounting table, 13, a rope passing hole, 14, a side plate, 15, a guide rail, 16, a reinforcing column, 17, a bottom platform, 2, a winch, 3, an electromagnetic adsorption device, 4, a falling platform, 41, a support plate, 42, a fixing hole, 43, a rectangular frame, 44, a sliding groove, 45, a support beam, 46, an adsorption iron block, 5 and a buffer device.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1, the utility model discloses a high g value mechanical shock test device of battery, including test rack 1, hoist engine 2, electromagnetism adsorption equipment 3 and fall platform 4, wherein, hoist engine 2 is fixed at test rack 1's top, 1 inside test rack 1 is introduced from the top to the stay cord of hoist engine 2, and stay cord end connection electromagnetism adsorption equipment 3, fall platform 4 and set up inside test rack 1, and fall 4 left and right sides sliding connection of platform on test rack 1's curb plate 14, the upper portion that falls platform 4 can adsorb on electromagnetism adsorption equipment 3, during the test, the battery that awaits measuring is fixed on falling platform 4.

As shown in fig. 2, the test bench 1 is a hollow structure, and includes a top 11, left and right side plates 14 and a bottom platform 17, the top 11 is composed of a plurality of parallel beams, two ends of the beams are respectively fixedly connected with the tops of the left and right side plates 14, each side plate 14 is vertically provided with at least two guide rails 15 which are slidably connected with the falling platform 4, the bottom platform 17 is arranged at the bottom between the left and right side plates 14, in order to facilitate the installation of the winch 2, a winch installation platform 12 is arranged between the beams at the middle part of the top 11, and the winch installation platform 12 is provided with a rope passing hole 13. In order to improve the stability of the test rig 1, the rear part of the test rig 1 is provided with several staggered reinforcing columns 16. In order to adjust the impact pulse width of the mechanical impact experiment, a buffer device 5 is further arranged on the bottom platform 17, and the buffer device 5 comprises buffer pads with different hardness.

As shown in fig. 3, the drop platform 4 includes a supporting plate 41, a plurality of fixing holes 42 for fixing the battery to be tested are uniformly distributed on the supporting plate 41, preferably, the fixing holes 42 are threaded holes, rectangular frames 43 are vertically arranged on the left and right sides of the supporting plate 41, sliding grooves 44 matched with the guide rails 15 in number are arranged on the outer sides of the rectangular frames 43, a supporting beam 45 crossing the supporting plate 41 is arranged between the tops of the rectangular frames 43 on the left and right sides, and an adsorption iron block 46 fixedly connected with the supporting beam 45 is arranged in the middle of the supporting beam 45. In order to ensure that the falling platform 4 is in a horizontal state as much as possible when being lifted and avoid the situation of being blocked with the guide rail 15 in the rising process, the center of the adsorption iron block 46 is positioned right above the gravity center of the falling platform 4.

The working process is as follows:

during the test, at first, will fall platform 4 and fall to the bottom of test rack 1, will await measuring the battery and fix on falling the backup pad 41 of platform 4, fall platform 4 and fall the device and pass through the guide rail 15 constraint, guarantee that the battery falls the in-process, falls the 4 postures of platform and remain the level all the time. Then, put down electromagnetic adsorption device 3 through hoist engine 2, until electromagnetic adsorption device 3 can with adsorb iron plate 46 contact, then, power on electromagnetic adsorption device 3, make it produce the electromagnetic adsorption power and adsorb on adsorbing iron plate 46, start hoist engine 2, upwards hoist and fall platform 4 to required test height, the position has been adjusted, electromagnetic adsorption device 3 outage at last, magnetic force disappears, fall platform 4 and the battery that awaits measuring and drop to the bottom platform 17 of test bench 1 simultaneously, and can cushion through buffer 5 on the bottom platform 17, realize the battery mechanical shock test of high g value.

It should be noted that the utility model provides a "high g value" indicates that the impact produces instantaneous acceleration value, and the speed in the twinkling of an eye is big, and the time is shorter, and the acceleration value that produces is also big more, consequently, can adjust the impact time through increasing buffer 5 to adjust the impact pulse width.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the description, and the technical scope must be determined according to the scope of the claims.

Claims (7)

1. The utility model provides a high g value mechanical shock test device of battery which characterized in that: including test rack, hoist engine, electromagnetic adsorption device and drop the platform, wherein, the hoist engine is fixed at the top of test rack, inside the stay cord of hoist engine from the top down introduced the test rack, and stay cord end connection the electromagnetic adsorption device, drop the platform setting inside the test rack, and drop the platform left and right sides sliding connection on the curb plate of test rack, the upper portion that falls the platform can adsorb on the electromagnetic adsorption device, during the test, the battery that awaits measuring is fixed on falling the platform.

2. The battery high-g-value mechanical shock test device of claim 1, wherein: the test bench is hollow structure, including frame top, left and right sides board and bottom platform, the frame top comprises the crossbeam of a plurality of parallels, the both ends of crossbeam respectively with left and right sides board top fixed connection, every the inboard vertical guide rail that is equipped with at least two and falls platform sliding connection of curb plate, the bottom platform sets up the bottom between the left and right sides board.

3. The battery high-g-value mechanical shock test apparatus of claim 2, wherein: and a winch mounting platform is arranged between the cross beams in the middle of the top of the frame, and a rope passing hole is formed in the winch mounting platform.

4. The high-g-value mechanical impact test device for batteries according to claim 2, wherein: still be equipped with buffer on the bottom platform, buffer includes a plurality of blotter.

5. The high-g-value mechanical impact test device for batteries according to claim 2, wherein: and the rear part of the test bench is provided with a plurality of reinforcing columns which are connected in a staggered manner.

6. The high-g-value mechanical impact test device for batteries according to any one of claims 1 to 5, wherein: it includes the backup pad to fall the platform, the equipartition has a plurality of fixed orificess that are used for fixed battery that awaits measuring in the backup pad, the vertical rectangular frame that is equipped with in the left and right sides of backup pad, rectangular frame's the outside is equipped with the spout that matches with guide rail quantity, is equipped with the supporting beam who spanes the backup pad between the top of the left and right sides rectangular frame, the middle part of supporting beam is equipped with the absorption iron plate with a supporting beam fixed connection.

7. The battery high-g-value mechanical shock test device of claim 6, wherein: the center of the adsorption iron block is positioned right above the gravity center of the falling platform.

Images