An electric vehicle electrical performance comprehensive testing device

Abstract

The application discloses a kind of electric vehicle electrical performance comprehensive test device, it is related to electric vehicle testing equipment technical field.This kind of electric vehicle electrical performance comprehensive test device, including upper base, the lower base is fixedly connected in the upper base bottom, the needle test component is arranged in the lower base top, the needle test component includes the basic slide that is slidably connected in the central through-hole of upper base top, the upper base top is fixedly connected with sandwich cover, the through-hole is opened in the basic slide top, the pressure relief block is slidably connected in the through-hole in the basic slide interior.The electric vehicle electrical performance comprehensive test device, by setting sandwich cover, needle test component, limit supporting wheel frame, charger and acquisition cabinet, realize in safe, controllable closed environment, to electric vehicle is carried out close to real working condition's needle, overcharge and rate charge and other multidimensional electrical performance comprehensive test.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle testing equipment technology, specifically to a comprehensive testing device for the electrical performance of electric vehicles. Background Technology

[0002] Electric vehicles are vehicles that use on-board power sources to drive the wheels with electric motors and meet all requirements of road traffic and safety regulations. After production, electric vehicles need to undergo various inspections and tests, especially electrical performance tests, including battery nail penetration tests, overcharge tests, and rate charge and discharge tests, which are related to the overall safety of the electric vehicle. Existing tests for electric vehicle batteries typically test the batteries individually, and the test sites are often relatively open areas without protection, which cannot simulate the actual testing conditions after the batteries are installed in the vehicle. In addition, if the battery accidentally catches fire or explodes, it will also affect the safety of the surrounding test personnel. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a comprehensive testing device for the electrical performance of electric vehicles, thereby resolving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a comprehensive electrical performance testing device for electric vehicles, comprising an upper base, a lower base fixedly connected to the bottom of the upper base, a through hole at the center of the top of the upper base, a needle penetration testing assembly at the top of the lower base, the needle penetration testing assembly comprising a base slide plate slidably connected to the through hole at the center of the top of the upper base, a puncture needle fixedly connected to the top of the base slide plate, a hydraulic cylinder fixedly connected to the bottom of the base slide plate, a sandwich cover fixedly connected to the top of the upper base, a rotatably connected sealing door to the front of the sandwich cover, the hydraulic cylinder located at the top of the lower base, a through hole at the top of the base slide plate, a pressure relief block slidably connected inside the base slide plate through the through hole, and a charger provided on the back of the inner wall of the sandwich cover; The pressure relief block includes: A block, which is slidably connected to the inside of the through hole of the base slide plate; A base plate, which is fixedly connected to the bottom of the block, and the top of the base plate is slidably connected to the bottom of the base slide plate via a spring; A flow guide channel is provided on the top of the block, and the base slide plate is slidably connected to the flow guide channel through through holes at both the front and rear.

[0005] Preferably, the upper base has four through holes at the four corners of its top, and the lower base has a limiting roller bracket at its top. The limiting roller bracket includes a support frame that is slidably connected to the top of the lower base by a spring. The support frame has a U-shaped cross-section on its front side and is slidably connected to the through holes at the four corners of the upper base. The top of the support frame is rotatably connected to a lifting wheel.

[0006] Preferably, the outer surface of the hydraulic cylinder is provided with a shielding cover, which is a sleeve consisting of two sliding sections. The upper sleeve is fixedly connected to the bottom of the base plate, and the lower sleeve is fixedly connected to the top of the lower base.

[0007] Preferably, the top of the upper base is connected to an air intake frame, and the air intake frame has a through hole that narrows from top to bottom. One end of the through hole is connected to the inner side of the outer surface of the air intake frame, and the other end is connected to the lower base. The bottom of the lower base is connected to an external air extraction device.

[0008] Preferably, observation windows are fixedly connected to both the left and right sides of the sandwich cover, the observation windows are made of tempered glass, and spherical cameras are fixedly connected to both sides of the inner wall of the sandwich cover.

[0009] Preferably, the sandwich cover is filled with honeycomb foam material, the top of the upper base has a sliding groove, a thermally conductive protection plate is slidably connected in the sliding groove at the top of the upper base, a support plate is fixedly connected to the back of the thermally conductive protection plate, the support plate is located on the back of the sandwich cover, a limit block is fixedly connected to the front of the thermally conductive protection plate, the thermally conductive protection plate is located on the top of the needle penetration test assembly, a data acquisition cabinet is fixedly connected to the back of the sandwich cover, the data acquisition cabinet is electrically connected to the charger, and the data acquisition cabinet is electrically connected to the spherical camera.

[0010] This invention provides a comprehensive testing device for the electrical performance of electric vehicles. It has the following advantages: This comprehensive testing device for the electrical performance of electric vehicles, through the integrated testing setup, utilizes a sealed sandwich hood in conjunction with an extraction device, pressure relief block, flow guide, and support frame to effectively seal the testing space and promptly guide and discharge high-temperature, high-pressure gases in case of accidents. The combination of a needle penetration test component and a thermal protection plate enables convenient operation and isolation protection for battery needle penetration testing. The cooperation between a limiting support roller and a lifting roller provides a realistic simulation of the vehicle's movement. Furthermore, the integration of a charger, data acquisition cabinet, spherical camera, and sensors enables comprehensive testing and real-time monitoring of various electrical performance parameters, including overcharge and rate charge / discharge tests. Ultimately, this allows for comprehensive, multi-dimensional electrical performance testing of the entire electric vehicle under near-real-world conditions in a safe, controllable, and sealed environment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a schematic diagram of the overall internal structure of the present invention; Figure 4 This is a cross-sectional view of the internal structure of the base of the present invention; Figure 5 This is a schematic diagram of the overall structure of the lower base of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the needle penetration test component of the present invention; Figure 7 This is a schematic diagram of the overall structure of the pressure relief block of the present invention.

[0012] In the diagram: 1. Upper base; 11. Air intake frame; 2. Lower base; 3. Sandwich cover; 31. Observation window; 4. Sealing door; 5. Limiting roller frame; 51. Support frame; 52. Lifting roller; 6. Needle penetration test assembly; 61. Basic slide plate; 62. Puncture needle; 63. Pressure relief block; 631. Block; 632. Base plate; 633. Guide channel; 64. Hydraulic cylinder; 65. Shielding slide cover; 7. Charger; 8. Spherical camera; 9. Thermal protection plate; 10. Data acquisition cabinet. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0014] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0015] Example Please see Figure 1-7This invention provides a technical solution: a comprehensive testing device for the electrical performance of electric vehicles, comprising an upper base 1, a through hole at the center of the top of the upper base 1, four through holes at the four corners of the top of the upper base 1, a sliding groove on the top of the upper base 1, an air intake frame 11 connected to the top of the upper base 1, an air intake frame 11 having a through hole that tapers from top to bottom inside the air intake frame 11, one end of the through hole communicating with the inner side of the outer surface of the air intake frame 11, and the other end communicating with a lower base 2, the bottom of the lower base 2 communicating with an external air extraction device, the lower base 2 fixedly connected to the bottom of the upper base 1, a sandwich cover 3 fixedly connected to the top of the upper base 1, the sandwich cover 3 being filled with honeycomb foam material, observation windows 31 fixedly connected to both the left and right sides of the sandwich cover 3, the observation windows 31 being made of tempered glass, a sealing door 4 rotatably connected to the front of the sandwich cover 3, and a hydraulic cylinder 64 located on the top of the lower base 2. The inner side of the outer surface of the sandwich cover 3 is equipped with a temperature sensor and a smoke sensor. The top of the lower base 2 is equipped with a limit support roller bracket 5, which includes a support frame 51 slidably connected to the top of the lower base 2 by a spring. The front cross-section of the support frame 51 is U-shaped. The support frame 51 is slidably connected to the through holes at the four corners of the upper base 1. The top of the support frame 51 is rotatably connected with a lifting wheel 52. Each support frame 51 has a lifting wheel 52. The top of the lower base 2 is equipped with a needle penetration test assembly 6, which includes a base slide plate 61 slidably connected to the central through hole at the top of the upper base 1. A puncture needle 62 is fixedly connected to the top of the base slide plate 61, and a hydraulic cylinder 64 is fixedly connected to the bottom of the base slide plate 61. The top of the base slide plate 61 has a through hole, and a pressure relief block 63 is slidably connected to the inside of the base slide plate 61 through the through hole. The pressure relief block 63 includes: Block 631 is slidably connected to the inside of the through hole of the base slide plate 61; The bottom plate 632 is fixedly connected to the bottom of the block 631, and the top of the bottom plate 632 is slidably connected to the bottom of the base slide plate 61 by a spring. A flow guide 633 is provided on the top of the block 631. The base slide plate 61 is slidably connected to the flow guide 633 through through holes at both the front and rear. The outer surface of the hydraulic cylinder 64 is provided with a shielding slide cover 65. The shielding slide cover 65 is a two-section sleeve that slides against each other. The upper sleeve is fixedly connected to the bottom of the base slide plate 61, and the lower sleeve is fixedly connected to the top of the lower base 2. A charger 7 is installed on the back of the inner wall of the sandwich cover 3. Spherical cameras 8 are fixedly connected to both sides of the inner wall of the sandwich cover 3. A thermal protection plate 9 is slidably connected in the top groove of the upper base 1. A support plate is fixedly connected to the back of the thermal protection plate 9. The support plate is located on the back of the sandwich cover 3. A limit block is fixedly connected to the front of the thermal protection plate 9. The thermal protection plate 9 is located on the top of the needle penetration test assembly 6. A data acquisition cabinet 10 is fixedly connected to the back of the sandwich cover 3. The data acquisition cabinet 10 is electrically connected to the charger 7 and the spherical camera 8.

[0016] When in use, open the closed door 4 and pour the test vehicle into the sandwich cover 3 until all four wheels of the vehicle are stopped between the two lifting wheels 52. At the same time, the support frame 51 will slide down a certain distance under the action of the vehicle's gravity. Then, fix the vehicle body firmly inside the sandwich cover 3, close the closed door 4, drag the heat conduction protection plate 9 to the limit position until the needle penetration test component 6 is fully exposed, and then start the external air extraction equipment to conduct the test. During the needle penetration test, the hydraulic cylinder 64 pushes the base slide plate 61 to slide upward. The base slide plate 61 drives the puncture needle 62 to pierce the battery pack at the bottom of the vehicle. If an accident occurs and the battery pack burns or explodes, some of the high-speed gas at the lower position will be sucked into the lower base 2 along the gap between the support frame 51 and the upper base 1. The high-speed gas at the higher position will be sucked in from the air intake frame 11. When the internal air pressure of the device increases rapidly, the pressure relief block 63 will slide downward under the pressure until the guide groove 633 is connected to the interior of the lower base 2. The high-speed gas enters the lower base 2 along the guide groove 633 and is finally extracted by the air extraction device. During overcharge and rate charge / discharge tests, the charging gun of charger 7 is connected to the vehicle's charging interface, and the corresponding test process is carried out. During this process, the real-time situation inside the device can be observed through the spherical camera 8, and if necessary, it can also be observed through the observation window 31. The charging parameters of charger 7, the image data of spherical camera 8, and the temperature and smoke data collected by the sensor of sandwich 3 are all transmitted back through the data acquisition cabinet 10. Depending on the different test requirements and the test states to be simulated, different combinations of experiments can be flexibly selected. When it is necessary to simulate the vehicle's motion state, the vehicle is controlled to enter the motion state, and the wheels and the lifting wheel 52 rotate relative to each other, while the whole vehicle itself does not move, thereby realizing the simulation of the working state of the vehicle's power unit.

[0017] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A comprehensive electrical performance testing device for electric vehicles, comprising an upper base (1), a lower base (2) fixedly connected to the bottom of the upper base (1), a through hole being opened at the center of the top of the upper base (1), and a needle penetration test assembly (6) being provided at the top of the lower base (2), the needle penetration test assembly (6) comprising a base slide plate (61) slidably connected to the through hole at the center of the top of the upper base (1), a puncture needle (62) fixedly connected to the top of the base slide plate (61), and a hydraulic cylinder (64) fixedly connected to the bottom of the base slide plate (61), characterized in that: The upper base (1) is fixedly connected to the top of the sandwich cover (3), and the front of the sandwich cover (3) is rotatably connected to the closed door (4). The hydraulic cylinder (64) is located on the top of the lower base (2). The top of the base slide plate (61) is provided with a through hole, and the interior of the base slide plate (61) is slidably connected to a pressure relief block (63) through the through hole. The pressure relief block (63) includes: Block (631), which is slidably connected to the inside of the through hole of the base slide plate (61); A base plate (632) is fixedly connected to the bottom of the block (631), and the top of the base plate (632) is slidably connected to the bottom of the base slide plate (61) by a spring; The guide channel (633) is located on the top of the block (631), and the base slide plate (61) is slidably connected to the guide channel (633) through through holes at both the front and rear.

2. The comprehensive testing device for the electrical performance of an electric vehicle according to claim 1, characterized in that: The upper base (1) has four through holes at the four corners of its top. The lower base (2) is provided with a limiting support wheel frame (5) at its top. The limiting support wheel frame (5) includes a support frame (51) that is slidably connected to the top of the lower base (2) by a spring. The support frame (51) is slidably connected to the through holes at the four corners of the upper base (1). The top of the support frame (51) is rotatably connected with a lifting wheel (52).

3. The comprehensive testing device for the electrical performance of an electric vehicle according to claim 2, characterized in that: The outer surface of the hydraulic cylinder (64) is provided with a shielding slide cover (65). The shielding slide cover (65) consists of two sleeves that slide against each other. The upper sleeve is fixedly connected to the bottom of the base slide plate (61), and the lower sleeve is fixedly connected to the top of the lower base (2).

4. The comprehensive testing device for the electrical performance of an electric vehicle according to claim 1, characterized in that: The upper base (1) is connected to an air intake frame (11) at the top. The air intake frame (11) has a through hole that narrows from top to bottom. One end of the through hole is connected to the inner side of the outer surface of the air intake frame (11), and the other end is connected to the lower base (2). The bottom of the lower base (2) is connected to an external air extraction device.

5. The comprehensive testing device for the electrical performance of an electric vehicle according to claim 1, characterized in that: The sandwich cover (3) is fixedly connected to observation windows (31) on both the left and right sides, and to spherical cameras (8) on both sides of the inner wall of the sandwich cover (3).

6. The comprehensive testing device for the electrical performance of electric vehicles according to claim 1, characterized in that: The upper base (1) has a sliding groove on its top, and a heat-conducting protection plate (9) is slidably connected in the sliding groove on the top of the upper base (1). A limit block is fixedly connected to the front of the heat-conducting protection plate (9), and the heat-conducting protection plate (9) is located on the top of the needle puncture test assembly (6).

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