Dynamic impact device for safety failure test of vehicle-mounted high and low voltage module

Abstract

The utility model relates to the technical field of automobile test equipment, in particular to a dynamic impact device for a safety failure test of a vehicle-mounted high-low voltage module, which comprises an installation module, the impact module impacts the to-be-tested vehicle-mounted high-low voltage module to perform a safety failure test of dynamic impact; a loading pulley of the impact module carries out loading through a steel cable pulling pulley, and one end of the top surface of the loading pulley is connected with an impact head; a plurality of bolt mounting holes are formed in the surface of a fixed bottom plate of the mounting module, and a plurality of mounting points are provided for a lateral fixed plate and a back mounting plate; and a plurality of second strip-shaped mounting holes are formed in the vertical plate of the back mounting plate, so that a plurality of mounting points are provided for the fixing block. The scheme is adapted to different vehicle-mounted high and low voltage modules, dynamic impact of safety failure test is carried out, the safety failure boundary of the vehicle-mounted high and low voltage module can be simply, rapidly and accurately measured, and a basis is provided for realizing a rapid determination test system.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile test equipment, in particular to a dynamic impact device for safety failure test of on-vehicle high and low voltage modules. Background Technique

[0002] In recent years, new energy vehicles have developed and popularized rapidly, and the proportion of new vehicle sales exceeds 30% of the annual sales volume. With the wide range of popularization, there are still many safety problems in the market, such as charging spontaneous combustion / static spontaneous combustion / collision spontaneous combustion. The high and low voltage components in the engine compartment including power batteries are the main factors leading to the spontaneous combustion of the whole vehicle. How to determine the safety failure boundary and failure mechanism of on-vehicle high and low voltage modules has become a key research issue, where the on-vehicle high and low voltage module is a module containing several high and low voltage components.

[0003] With the acceleration of the electrification and intelligentization process of the whole vehicle, the number of high and low voltage components in the vehicle is increasing continuously. Under the collision conditions of the whole vehicle, the damage of some high and low voltage components will lead to the failure of the key functions of the whole vehicle, and even may cause fires and other situations. The reasons for the failure of electrical components are complex, but can be summarized into two categories, namely external short circuit and internal short circuit. External short circuit mainly refers to the short circuit caused by the contact between the damaged electrical terminal wire harness and the surrounding conductor, resulting in function failure. Internal short circuit is mainly the damage of the electrical structure, and the short circuit inside the module itself leads to function failure.

[0004] Regarding the damage situation of the vehicle itself under the action of mechanical abuse load, in the face of the scenario where various modules are impacted in the collision condition, due to the different structures and complex shapes of different modules, there is currently no universal test device to objectively test the impact resistance of on-vehicle high and low voltage modules through experimental methods.

[0005] Therefore, there is an urgent need for a dynamic impact device for safety failure test of on-vehicle high and low voltage modules, which is adapted to different on-vehicle high and low voltage modules, conducts dynamic impact of safety failure test, can simply, quickly and accurately measure the safety failure boundary of on-vehicle high and low voltage modules, and provides a basis for realizing a fast judgment test system. Content of the Utility Model

[0006] The utility model aims to provide a dynamic impact device for safety failure test of on-vehicle high and low voltage modules, which is adapted to different on-vehicle high and low voltage modules, conducts dynamic impact of safety failure test, can simply, quickly and accurately measure the safety failure boundary of on-vehicle high and low voltage modules, and provides a basis for realizing a fast judgment test system.

[0007] The utility model provides the following basic scheme: a dynamic impact device for safety failure test of on-vehicle high and low voltage modules, including: an impact module and a mounting module;

[0008] The mounting module is used for mounting the on-vehicle high and low voltage module to be tested;

[0009] An impact module for impacting the in-vehicle high and low voltage module to be tested and performing a safety failure test for dynamic impact;

[0010] The impact module includes: a loading trolley;

[0011] Rolling bearings are installed on the side of the loading trolley. The trolley is connected to the set steel cable through the bottom mounting point, and the trolley is loaded by pulling the steel cable.

[0012] One end of the top surface of the loading trolley is provided with a connecting block, and an impact head is connected through the connecting block.

[0013] The installation module includes: a fixed bottom plate, a lateral fixing plate, a back mounting plate and several fixing blocks;

[0014] Several bolt mounting holes are provided on the surface of the fixed bottom plate; the fixed bottom plate is a concave bottom plate, and the loading trolley is arranged in the groove of the fixed bottom plate, and the rolling bearing engages with the side wall of the groove.

[0015] The lateral fixing plate is L-shaped. The bottom of the horizontal plate of the lateral fixing plate is provided with a first long installation hole, and is fixedly installed on the fixed bottom plate through a bolt passing through the first long installation hole and the bolt mounting hole.

[0016] The back mounting plate is L-shaped. The bottom of the horizontal plate of the back mounting plate is provided with a first bolt hole, and is fixedly installed on the fixed bottom plate through a bolt passing through the first bolt hole and the bolt mounting hole; several second long installation holes are provided on the vertical plate of the back mounting plate.

[0017] The tail of the fixing block is provided with a second bolt hole. The up and down position and angle of the fixing block are adjusted according to the size and impact position of the in-vehicle high and low voltage module to be tested, and the fixing block is fixedly installed on the back mounting plate through a bolt passing through the second long installation hole and the second bolt hole to fix the in-vehicle high and low voltage module to be tested.

[0018] The beneficial effects of the basic solution: According to the size of the in-vehicle high and low voltage module to be tested, the installation positions of the lateral fixing plate and the back mounting plate are dynamically adjusted, and the number and positions of the fixing blocks are adjusted, so that the in-vehicle high and low voltage module to be tested is clamped and fixed in the installation module through the fixing block and the lateral fixing plate; several bolt mounting holes are provided on the surface of the fixed bottom plate, providing several installation points for the lateral fixing plate and the back mounting plate; several second long installation holes are provided on the vertical plate of the back mounting plate, also providing several installation points for the fixing block; just select and install according to the actual test requirements.

[0019] After the in-vehicle high-voltage and low-voltage module to be tested is fixedly installed, the loading trolley engages with the side wall of the groove of the fixed base plate set on the ground through the rolling bearing installed on the side. The trolley is connected to the set steel cable through the bottom mounting point, and the trolley is pulled by the steel cable for loading. And one end of the top surface of the loading trolley is provided with a connecting block, and an impact head is connected through the connecting block. The loading trolley drives the impact head to move, impacts the in-vehicle high-voltage and low-voltage module, and conducts dynamic impact for safety failure testing. The equipment structure is simple, the installation and adjustment during the testing process are also simple and easy, and the installation module can be adjusted and assembled according to different in-vehicle high-voltage and low-voltage modules to be tested.

[0020] In summary, this solution is suitable for different in-vehicle high-voltage and low-voltage modules, conducts dynamic impact for safety failure testing, can simply, quickly and accurately measure the safety failure boundary of the in-vehicle high-voltage and low-voltage module, and provides a basis for realizing a fast-determination test system.

[0021] Furthermore, the shape of the impact head includes: semi-circular, conical, flat plate, circular.

[0022] Beneficial effect: Impact heads of different shapes can better adapt to different impact requirements.

[0023] Furthermore, the width of the groove of the fixed base plate is greater than the width of the loading trolley.

[0024] Beneficial effect: The fixed base plate is a concave base plate, and the width of the opening is greater than the width of the loading trolley, thereby increasing the size of the fixed base plate, increasing the bottom counterweight of the installation module, making the installation module more stable, and the loading path of the loading trolley includes the length of the opening part. If it is not desired to expand the test environment as a whole, the requirement for the loading path length can also be met; or the loading path of the loading trolley includes the length of the opening part, which can also increase the impact force of the loading trolley.

[0025] Furthermore, there are two rows of second long strip mounting holes arranged up and down on the vertical plate of the back mounting plate, and several second long strip mounting holes are evenly arranged in both the upper row and the lower row.

[0026] Beneficial effect: The two rows of second long strip mounting holes up and down can better install the fixing block to stably clamp the in-vehicle high-voltage and low-voltage module to be tested.

[0027] Furthermore, the installation module further includes: a back cushion plate;

[0028] One side of the back cushion plate contacts the support surface, and the other side contacts the back mounting plate.

[0029] Beneficial effect: The back cushion plate can serve as a buffer between the back mounting plate and the support surface, thereby reducing damage to the support surface.

[0030] Furthermore, the support surface is of concrete structure or steel structure, and the back pad is fastened to the concrete structure or steel structure by bolts.

[0031] Advantageous effects: The support surface is of concrete structure or steel structure, and the back pad is fastened to the concrete structure or steel structure by bolts, thus playing a better supporting role. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of an embodiment of a dynamic impact device for on-vehicle high and low voltage module safety failure test of the present utility model. Detailed Embodiment

[0033] The following is a further detailed description through specific embodiments:

[0034] The reference numerals in the drawings of the specification include: loading trolley 1, impact head 2, fixed bottom plate 3, lateral fixing plate 4, fixing block 5, back mounting plate 6, back pad 7, connecting block 101, top plate 102, rolling bearing 103, steel cable 104, groove side wall 105, bolt mounting hole 301, first long mounting hole 401, second long mounting hole 601.

[0035] In the description of the present application, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In the description of this specification, it should be understood that the orientation terms such as "upper", "lower", "left", "right", etc. described in the embodiments of the present application are described from the angles shown in the drawings and should not be construed as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "above", "below", "left" or "right", it can not only be directly connected to another element "above", "below", "left" or "right", but also be indirectly connected to another element "above", "below", "left" or "right" through an intermediate element.

[0037] The embodiment is basically as shown in the attached Figure 1 figures: A dynamic impact device for on-vehicle high and low voltage module safety failure test, comprising:

[0038] an impact module and a mounting module;

[0039] An installation module for installing the vehicle-mounted high and low voltage module to be tested;

[0040] An impact module for impacting the vehicle-mounted high and low voltage module to be tested and conducting a safety failure test for dynamic impact;

[0041] The impact module includes: a loading trolley 1;

[0042] The loading trolley 1 is built with a high-strength aluminum alloy skeleton. Rolling bearings are installed on the side of the loading trolley 1. The trolley is connected to the set steel cable through the bottom mounting point, and the trolley is loaded by pulling the steel cable;

[0043] A connecting block 101 is provided at one end of the top surface of the loading trolley 1, and an impact head 2 is connected through the connecting block 101;

[0044] The impact head 2 is fixed on the connecting block 101 by bolts and thus fixed on the loading trolley 1. The shape of the impact head 2 can be adjusted according to actual needs, including but not limited to: semi-circular, conical, flat, circular; in this embodiment, the impact head 2 is made of 45# steel;

[0045] The top surface of the loading trolley 1 is a top plate 102. Counterweight blocks can be freely loaded on the top plate 102 to adjust the impact mass and simulate the failure conditions of high-voltage components under different impact energies; specifically, the counterweight blocks are fixed on the top plate 102 by bolts, and the number and weight of the counterweight blocks are set according to requirements; the connecting block 101 is also fixedly installed on the top plate 102;

[0046] The installation module includes: a fixed bottom plate 3, a lateral fixing plate 4, a back mounting plate 6, a back cushion plate 7 and several fixing blocks 5;

[0047] The fixed bottom plate 3 is a concave bottom plate, and the width of the groove is greater than the width of the loading trolley 1; in this embodiment, the fixed bottom plate 3 is made of 45# steel; the loading trolley 1 is arranged in the groove of the fixed bottom plate 3. The middle of the rolling bearing 103 is concave and the two sides are protruding, engaging with the groove side wall 105; in the specific use process, the fixed bottom plate is arranged on the ground, and an installation groove with a width greater than the groove of the fixed bottom plate 3 is arranged on the ground corresponding to the groove. The loading trolley 1 is arranged in the groove of the fixed bottom plate 3. The middle of the rolling bearing 103 on its side is concave and the two sides are protruding, engaging with the groove side wall 105. The bottom surface of the loading trolley 1 contacts the bottom surface of the installation groove (i.e., the ground). The fixed bottom plate 3 not only plays a role in bottom support and fixation, but also acts as a slide rail. It is equivalent to a slide rail arranged on the ground, and the rolling bearing 103 engages with the slide rail (i.e., the groove side wall 105 of the fixed bottom plate 3);

[0048] The surface of the fixed bottom plate 3 is provided with several bolt mounting holes 301, and the hole gap is 50*50;

[0049] It can be dynamically adjusted according to the size of the in-vehicle high and low voltage module to be measured, and the installation positions of the lateral fixing plate 4 and the back mounting plate 6 are provided to provide installation points for the lateral fixing plate 4 and the back mounting plate 6.

[0050] The lateral fixing plate 4 is in an L shape. A first long installation hole 401 is opened at the bottom of the horizontal plate of the lateral fixing plate 4, and it is fixedly installed on the fixed bottom plate 3 by bolts passing through the first long installation hole 401 and the bolt installation hole 301; its position installed on the fixed bottom plate 3 is adjusted according to the size of the in-vehicle high and low voltage module to be measured; in this embodiment, the lateral fixing plate 4 is made of 45# steel;

[0051] The back mounting plate 6 is in an L shape. A first bolt hole is opened at the bottom of the horizontal plate of the back mounting plate 6, and it is fixedly installed on the fixed bottom plate 3 by bolts passing through the first bolt hole and the bolt installation hole 301; a plurality of second long installation holes 601 are provided on the vertical plate of the back mounting plate 6; specifically, there are two rows of second long installation holes 601, upper and lower, on the vertical plate of the back mounting plate 6, and a plurality of second long installation holes 601 are evenly arranged in both the upper row and the lower row. In this embodiment, there are two rows of second long installation holes 601, upper and lower, on the vertical plate of the back mounting plate 6. Three second long installation holes 601 are evenly spaced in the upper row, and two second long installation holes 601 are provided in the lower row corresponding to the second long installation holes 601 on both sides of the upper row; in this embodiment, the vertical plate of the back mounting plate 6 is made of 45# steel;

[0052] A second bolt hole is opened at the tail of the fixing block 5. The up and down position and angle of the fixing block 5 are adjusted according to the size of the in-vehicle high and low voltage module to be measured and the impact position, and it is fixedly installed on the back mounting plate 6 by bolts passing through the second long installation hole 601 and the second bolt hole; in this embodiment, the fixing block 5 is made of 45# steel; the number of the fixing blocks 5 is specifically set according to the in-vehicle high and low voltage module to be measured. In this embodiment, four fixing blocks 5 are provided and are respectively fixed in the left and right two second long installation holes 601 in the upper row and the second long installation holes 601 in the lower row;

[0053] One side of the back cushion 7 is in contact with the supporting surface, and the other side is in contact with the back mounting plate 6. Generally, the supporting surface is a concrete structure or a steel structure, and the back cushion 7 is fixedly fastened to the concrete structure or the steel structure by bolts; in this embodiment, the back cushion 7 is made of 45# steel.

[0054] The specific implementation process is as follows: During actual experiments, the tooling is fixed through the installation module, the loading trolley 1 is moved by the steel cable traction, the steel cable is disengaged at the critical position, and the loading trolley 1, the impact head 2 and the counterweight continue to move to impact the module;

[0055] Compared with the conventional horizontal dynamic impact equipment that uses a four-wheel trolley for loading, the mass of the trolley is usually more than 900 kg, and the input energy is relatively large, which is suitable for the subsystem tests of the whole vehicle or key structural components. However, the on-vehicle module impact test requires a smaller output energy, and the conventional four-wheel trolley is not applicable. This solution is aimed at equipment with a smaller size such as on-vehicle high and low voltage modules, and sets a smaller model of loading trolley 1 and impact head 2. By adjusting the counterweight, a wide range of adjustments between 50 kg and 200 kg can be achieved;

[0056] For the horizontal dynamic impact test of on-vehicle high and low voltage modules, conventional means need to be designed separately according to the size and shape of the corresponding modules. However, this equipment can fix a variety of on-vehicle high and low voltage modules as required by adjusting the positions and angles of the fixing block 5 and the lateral fixing plate 4; by adjusting the speed of the loading trolley 1 and the mass of the counterweight, the variable loading speed and input energy can be realized, and horizontal impact tests on a variety of on-vehicle modules under various boundary conditions can be carried out.

[0057] This solution is adapted to different on-vehicle high and low voltage modules to conduct dynamic impacts for safety failure tests, and can simply, quickly and accurately measure the safety failure boundaries of on-vehicle high and low voltage modules, providing a basis for a test system for rapid determination.

[0058] The above are only the embodiments of the present invention. Specific structures and common knowledge such as characteristics that are well known in the art are not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, can know all the prior arts in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application and combined with their own abilities, improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. A dynamic impact device for safety failure testing of vehicle-mounted high and low voltage modules, characterized in that: include: Impact module and installation module; Installation module, used to install the vehicle-mounted high and low voltage modules to be tested; Impact module, used to impact the vehicle-mounted high and low voltage modules to be tested, and conduct dynamic impact safety failure test; The impact module includes: a loading pulley; Rolling bearings are installed on the side of the loading pulley, and the pulley is connected to the set steel cable through the bottom installation point, and the pulley is pulled by the steel cable to load; A connection block is provided at one end of the top surface of the loading pulley, and an impact head is connected through the connection block; The installation module includes: a fixing bottom plate, a lateral fixing plate, a back mounting plate and a plurality of fixing blocks; The surface of the fixed bottom plate is provided with a plurality of bolt mounting holes; the fixed bottom plate is a concave bottom plate, the loading pulley is arranged in the groove of the fixed bottom plate, and the rolling bearing is engaged with the side wall of the groove; The lateral fixing plate is L-shaped, a first long strip mounting hole is opened at the bottom of the horizontal plate of the lateral fixing plate, and bolts are passed through the first long strip mounting hole and the bolt mounting hole to fasten and mount on the fixing bottom plate; The back mounting plate is L-shaped, a first bolt hole is opened at the bottom of the horizontal plate of the back mounting plate, and a bolt is passed through the first bolt hole and the bolt mounting hole to be fastened and mounted on the fixed bottom plate; a plurality of second long strip mounting holes are arranged on the vertical plate of the back mounting plate; A second bolt hole is opened at the tail of the fixing block. The upper and lower positions and angles of the fixing block are adjusted according to the size and impact position of the vehicle-mounted high and low voltage modules to be tested, and the fixing block is fastened to the back mounting plate by passing bolts through the second long mounting hole and the second bolt hole to fix the vehicle-mounted high and low voltage modules to be tested.

2. The dynamic impact device for safety failure test of vehicle-mounted high and low voltage modules according to claim 1 is characterized in that: The shapes of the impact head include: semicircular, conical, flat, and circular.

3. The dynamic impact device for safety failure test of vehicle-mounted high and low voltage modules according to claim 1 is characterized in that: The width of the groove of the fixed bottom plate is greater than the width of the loading pulley.

4. The dynamic impact device for safety failure test of vehicle-mounted high and low voltage modules according to claim 1 is characterized in that: The vertical plate of the back mounting plate is provided with upper and lower rows of second long strip mounting holes, and the upper row and the lower row are evenly provided with a plurality of second long strip mounting holes.

5. The dynamic impact device for safety failure test of vehicle-mounted high and low voltage modules according to claim 1 is characterized in that: The installation module further includes: a back pad; One side of the back pad contacts the supporting surface, and the other side contacts the back mounting plate.

6. The dynamic impact device for safety failure test of vehicle-mounted high and low voltage modules according to claim 5 is characterized in that: The supporting surface is a concrete structure or a steel structure, and the back pad is fastened to the concrete structure or the steel structure by bolts.

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