The energy supply of new energy vehicle includes lithium-ion battery and hydrogen fuel cell. The complex design of the battery and the guarantee of the safety of the whole vehicle require strict mechanical test for the elasticity, hardness, bending, puncture and other characteristics of the battery.

● mechanical test of lithium ion battery: the lithium battery is composed of positive and negative electrode, electrolyte, diaphragm, aluminum plastic film and other materials, and its mechanical properties include bending, stretching, compression, puncture and other tests. Compression test is the internal short-circuit test of lithium battery, which collects the battery voltage and surface temperature at the same time when pressing the fixed position of lithium battery, so as to analyze the four-dimensional data of force value, displacement, voltage and temperature.

● mechanical test of hydrogen fuel cell: hydrogen fuel cell is composed of metal cover, carbon fiber protective layer, proton exchange membrane and other components. The compression deformation of the carbon fiber protective layer is an important parameter, which determines the safety of the battery. Through Lloyd's material test system, the stress and strain of the carbon fiber protective layer can be clearly obtained.
 

The vehicle control system is the interactive interface between the driver and the vehicle. The system must perform its functions safely, and provide necessary tactile and acoustooptic feedback for the specific operation of the actuator.

● automobile pedal test: during vehicle driving, the clutch, brake and accelerator pedal on the vehicle will bear a large load, so it must be designed according to the actual working conditions. In order to ensure the safety and reliability of the pedal, it is necessary to measure the driving force and stroke accurately, and generate the characteristic curve of the electronic accelerator pedal according to the position of the accelerator pedal.

● key triggering: in the process of R & D and design of new products, a number of world-famous automobile manufacturers have certain requirements for the key triggering force of windows and instrument panel. The specific application includes three position switch keys and two position switch triggering force test of windows.

● clutch test: in the development and quality control of automobile clutch, the contact force stroke characteristic curve and release force stroke characteristic curve play a very important role. The test is generally arranged in the fast testing laboratory on the production line, and the Lloyd material test system meets the fast test and provides stable and accurate data.
 

● brake disc test: the brake disc is one of the most important parts of the brake system on the wheel. In order to evaluate the quality of the brake disc, it is necessary to apply additional pressure to the friction surface of the brake disc and measure its deformation. Lloyd's material testing machine can be equipped with a compression test device integrated with a measurement system for this test.

● hardness test of crankshaft, wheel hub and carburized layer: versitron under newage can measure the hardness of crankshaft quickly and efficiently, especially suitable for the rapid measurement of production line (4 seconds / time). Oil pollution and slight vibration have no effect on the measurement results. Mt91 micro Rockwell hardness tester can measure the hardness of carburized layer of gear and rack, and the track measurement mode can automatically complete the hardness test of multi-point convex and concave parts of gear parts, which is suitable for large-scale hardness measurement, and can complete single measurement in 6 seconds. The 9000N Brinell hardness tester is suitable for the hardness test of the wheel hub. The Brinell indenter is combined with the Rockwell sounding method. The maximum experimental speed is 500 times / hour. It can be used as a laboratory instrument and in combination with the actual production line.

The vehicle interior is not only for passengers to watch and experience, but also to ensure the survival of passengers in an emergency. The interior is an active and passive safety device on the vehicle. The test of seat interior is to ensure the safety and comfort of passengers, especially children.

● safety belt test: for a long time, the safety belt has been the most important vehicle occupant restraint system, which must also meet a number of strict requirements, and the test standard details are specified by UN / ece-r16. The test of safety belt must be carried out on the material testing machine according to very strict standards. In addition to the maximum force in case of failure, the lateral strain of the safety belt under the load also needs to be calculated. Lloyd's testing machine can also measure the strength of the entire safety belt system (including or excluding the buckle).

● test of air bag: the air bag is now installed at all positions in the passenger area. In addition to the test of air bag fabric, its joint and adhesive connection strength also need to be tested by tensile test.

● test of safety seat: in addition to the safety belt, the hardness of the seat itself is also an important consideration index of comfort. The two column model (pogo) of Lloyd's material testing machine can complete the test completely.

 

● sealing strip test: the window sealing strip is a component with high mechanical performance requirements. The commonly used tests are rubber strip pull test, rubber strip pull out force test, compression load test of sealing strip, friction coefficient test, etc. the high and low temperature test chamber can meet the requirements of temperature simulation.

● test of door and window sensor: the test system is used to test the door and window with anti pinch system. The anti pinch system of the door and window will close the window or sunroof motor when it detects that the door and window are subject to a specific load (such as the fingers or head of the passengers are clamped). The test system is used to measure the load of the trigger anti pinch system. During the test, all kinds of electronic signals will be measured and displayed in real time.

● test of valve core spring: each vehicle will use more than 100 valves, including engine and other parts, many of which are related to the safety of passengers and drivers, so more valve assembly and valve core spring require accurate test. Lloyd's brand double column test system, matched with customized test tooling, can carry out real-time three-dimensional mechanical test on the spring components of the valve core, and synthesize the data of LabVIEW software and nexygenplus software to obtain accurate data for evaluating the mechanical properties of the products.

● test of pneumatic spring: the pneumatic spring of the car is generally used as an auxiliary opening and fixing device on the boot or engine cover. In the process of cyclic test, it is necessary to measure the tensile and compressive properties of pneumatic spring according to its application.

● test of welding joints of connecting parts: each vehicle, including engine and other parts, shall be connected by welding, and the mechanical properties of welding joints between parts, such as tensile and bending, shall be strictly tested. In a large number of field applications, Chatillon dynamometer can quickly and accurately complete the mechanical test to ensure the safety and reliability of the component connection.

● air bag connection test: the vehicle is generally equipped with 8 to 12 air bags, and it must be ensured that all connection points are effectively fastened and all contacts are effectively contacted. In the development stage of components, the manufacturer of automobile connector system must test the connector to verify the mechanical and electrical performance. The electronic connector of airbag will make special noise when it is fastened, but this is not enough to ensure that the electronic circuit has been connected. Therefore, the manufacturer must rely on synchronous mechanical, electrical and optical tests. When the connector is connected, the control system of the testing machine must synchronously measure the current and draw a curve (indicating whether the electrical contact is contacted or not), at the same time, the video must be recorded when the buckle is fastened. Lloyd's material testing machine can expand the electrical channel, multi-dimensional recording and analysis of signals, provide video recording function, synchronous recording and playback of signals such as video recording and force value.