New energy vehicle high voltage wire harness electric inspection module

Abstract

The utility model relates to a new energy vehicle high-voltage wire harness electric inspection module, the electric inspection module upper seat and the electric inspection module base are placed on the electric inspection table; the high-voltage connector is placed in the groove of the electric inspection module upper seat; the terminal electric inspection probe passes through the through holes of the electric inspection module upper seat and the electric inspection module base, the terminal electric inspection probe is cylindrical, and the lower part is wound with a terminal electric inspection spring; in the oblong groove of the electric inspection module upper seat, two circular bosses are threadedly connected, and the circular bosses are connected to a guide cylinder, and the guide cylinder passes through the through holes of the electric inspection module upper seat and the electric inspection module base; the reed electric inspection probe is placed in the guide cylinder, and there is a gap between the bottom end and the bottom of the through hole of the electric inspection module base; the upper end of the reed electric inspection probe is a large head and serrated, and the lower part is wound with a reed electric inspection spring; one end of the reed electric inspection spring is fixed on the boss in the middle of the reed electric inspection probe, and the other end is ground on the electric inspection table. The advantage is that it can intuitively and accurately judge whether the high-voltage wire harness terminal reed exists, thereby improving product quality.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage wiring harnesses for new energy vehicles, and in particular to an electric inspection module for high-voltage wiring harnesses for new energy vehicles. It is applied to the Hongqi E115 model, and the development of an automated inspection device for 100% inspection of the springs in the high-voltage connector terminals of the high-voltage wiring harnesses of the E115 model has been completed. Background Art

[0002] The use status of high-voltage wire harnesses is an indispensable part of new energy vehicles. High-voltage wire harnesses are important links between power batteries and high-voltage distribution boxes, power batteries to motor controllers, power batteries to water heating PTCs, and charging piles to power batteries. Efficient and stable high-voltage wire harnesses are an indispensable component to ensure the quality of new energy vehicles. The stability of connector terminals, one of the core technologies of high-voltage wire harnesses, is a necessary condition to ensure the quality of high-voltage wire harnesses.

[0003] Usually, connectors have a temperature limit for use. Once the temperature exceeds the specified limit, the connector will reduce safety due to heat, or even fail and damage. The main reason for the increase in connector temperature is the connector itself. The connector heats up during use, and the plug-in connector in the connector has contact resistance. The greater the contact resistance, the greater the power loss, the higher the temperature of the contact, and the lower the reliability. In this regard, special attention should be paid when designing high-voltage and high-current connectors for electric vehicles. In order to avoid excessively high operating temperatures that damage the insulating materials in the connector, reduce its insulation performance, or even burn out and fail, and the elasticity of the contact parts decreases after being heated, or an insulating film is formed in the contact area, which reduces the contact reliability and increases the contact resistance, thereby exacerbating the increase in operating temperature. Such a vicious cycle ultimately leads to failure of the connection contact. The high-current contacts in the high-voltage and high-current connectors of electric vehicles must be reasonably designed. When designing high-current contacts, the contact parts usually have sheet type, leaf spring type, and wire spring type. There is no direct equipment for detecting the reeds of connector terminals in traditional wiring harness products. The inspection is done by the operator's visual inspection; or even if there is an inspection device, the inspection accuracy is poor and the efficiency is low, and it is not possible to achieve 100% inspection of the reeds. It is not suitable for mass production and is easily affected by human factors, which can cause uncertainty and errors in the product. This can lead to poor contact of the wiring harness product, resulting in burning of the battery and the car.

[0004] In order to ensure the quality and status of high-voltage wire harness products, it is urgent to add the detection of the presence of the reed in the terminal to the electrical inspection project, so that the detection of the reed in the terminal becomes reasonable and has a basis to rely on. Reduce the influence of human factors, thereby greatly improving product quality and status. Summary of the invention

[0005] The purpose of the utility model is to provide a high-voltage wire harness electric inspection module for new energy vehicles, which solves the problems of poor accuracy, low efficiency and easy forgetting of terminal spring detection in the prior art. The electric inspection module of the utility model is shared with the terminal electric inspection module, which saves time and effort and can achieve the purpose of accurately detecting the spring. The risk of the high-voltage wire harness burning the vehicle is avoided when the high-voltage wire harness is installed, and the safety of the high-voltage wire harness is improved.

[0006] The high-voltage wiring harness electrical inspection module of the utility model adds a probe for detecting the reed inside the high-voltage terminal, and the probe is designed to be in a sawtooth shape so that it can more fully contact the reed. A spring is designed at the bottom of the probe. During detection, the probe presses the spring to contract, and when the detection is completed, the spring rebounds, and the probe rises to complete the detection. The probe can more intuitively and accurately detect the reed of the high-voltage terminal on the high-voltage connector, achieving 100% detection of the reed, ensuring the accuracy of the product. The detection data is easy to trace, and it is highly practical in the mass production process. It reduces the omissions and inaccuracies that are easy to occur in manual visual inspections. Compared with ordinary electrical inspection modules, this detection module can detect the reed of the high-voltage terminal on the basis of basic electrical inspection functions, which is more economical, efficient and convenient.

[0007] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0008] A new energy vehicle high-voltage wiring harness electric inspection module, the electric inspection module upper seat 1 is threadedly connected with the electric inspection module base 2, and they are placed on the electric inspection table in cooperation with each other; the electric inspection module upper seat 1 is provided with a groove whose shape matches the appearance of the high-voltage connector, and the high-voltage connector is placed in the groove; the electric inspection module upper seat 1 and the electric inspection module base 2 are provided with corresponding through holes, the terminal electric inspection probe 5 passes through the through hole of the electric inspection module upper seat 1, and the bottom end is located in the through hole of the electric inspection module base 2, and there is a gap with the bottom of the through hole of the electric inspection module base 2; the terminal electric inspection probe 5 is cylindrical in shape, which can only detect the terminal, and cannot confirm whether there is a terminal spring inside; the lower part of the electric inspection probe 5 is wrapped around the terminal electric inspection spring 6; the oblong groove of the electric inspection module upper seat 1 is threadedly connected with two circular bosses 7, and the material is polyurethane, which can effectively prevent the high-voltage connector from being scratched by pressing into the electric inspection module upper seat 1. The upper surfaces of the circular bosses 7 are respectively threadedly connected to the cylindrical guide cylinders 8, and the guide cylinders 8 pass through the through holes of the upper seat 1 of the electric inspection module and the base 2 of the electric inspection module; the reed electric inspection probe 3 is placed in the guide cylinder 8, and there is a gap between the bottom end and the bottom of the through hole of the base 2 of the electric inspection module; the upper end of the reed electric inspection probe 3 is a large head and serrated, ensuring full contact with the high-voltage terminal reed on the high-voltage connector, and the lower part is wound with a reed electric inspection spring 4; one end of the reed electric inspection spring 4 is fixed on the boss in the middle of the reed electric inspection probe 3, and the other end is ground on the electric inspection table, and the boss in the middle of the reed electric inspection probe 3 can prevent the reed electric inspection probe 3 from shaking; when the high-voltage connector is pressed into the upper seat 1 of the electric inspection module, the terminal reed of the high-voltage connector contacts the upper end of the reed electric inspection probe 3, and the reed electric inspection probe 3 compresses the reed electric inspection spring 4 to compress the reed electric inspection probe 3, so that the reed electric inspection probe 3 moves downward and contacts the circuit board on the electric inspection table, so that it is energized, and the detection is passed.

[0009] The terminal electric detection probe 5 and the terminal electric detection spring 6 are installed on the upper seat 1 of the electric detection module, and the terminal electric detection probe 5 is cylindrical in shape, which can detect terminals without reeds. The terminal electric detection probe 5 and the reed electric detection probe 3 are designed on the same electric detection module, and two types of terminals can be detected as needed, with or without reeds.

[0010] The circular boss 7 is made of polyurethane.

[0011] The beneficial effects of the utility model are: novel concept, simple structure and wide application range. The structural connection method is threaded connection, which is easy to disassemble and has a small structure, so it is easy to install. Most of them use rigid materials with good conductivity, high strength, and are strong and durable. The contact surface is made of polyurethane material, which can protect the high-voltage connector and avoid scratches. During operation, the high-voltage connector is buckled on the upper seat 1 of the electric inspection module, so that the reed electric inspection probe 3 moves downward to make the reed electric inspection spring 4 in a contracted state, and the electric inspection module is powered on to start working. When the work is finished, the high-voltage connector is removed, the reed electric inspection spring 4 rebounds, and the reed electric inspection probe 3 moves upward to disconnect the circuit and end the work. The work process is simple, and the detection of the reed in the high-voltage terminal is added, which saves a lot of labor costs. It can intuitively and accurately judge whether the high-voltage wiring harness terminal reed exists, greatly reducing the risk of burning the car. It also provides an economical, effective and accurate detection method for other new energy businesses, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present application. The illustrative examples of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0013] Figure 1 This is a schematic diagram of the axonometric structure of the high-voltage wire harness electric inspection module for new energy vehicles of the utility model;

[0014] Figure 2 It is a schematic cross-sectional structure diagram of the high-voltage wire harness electric inspection module of a new energy vehicle of the utility model;

[0015] Figure 3 This is a schematic diagram of the main view structure of the high-voltage wire harness electric inspection module for new energy vehicles of the utility model;

[0016] Figure 4 This is a bottom-up structural schematic diagram of the high-voltage wire harness electric inspection module for new energy vehicles of the utility model;

[0017] Figure 5 This is a left-side structural schematic diagram of the high-voltage wire harness electric inspection module for new energy vehicles of the utility model;

[0018] Figure 6 This is a schematic diagram of the crown spring plane unfolded structure;

[0019] Figure 7 It is a schematic diagram of the cross-sectional structure of the crown spring and the pin;

[0020] Figure 8 It is a schematic diagram of the three-dimensional structure of the crown spring.

[0021] In the figure: 1. Upper seat of electric inspection module; 2. Base of electric inspection module; 3. Reed electric inspection probe; 4. Reed electric inspection spring; 5. Terminal electric inspection probe; 6. Terminal electric inspection spring; 7. Circular boss; 8. Guide cylinder; 9. Pin; 10. Crown spring; 11. Elastic socket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] See also Figures 1 to 8 As shown, the utility model of the new energy vehicle high-voltage wire harness electric inspection module is based on the use requirements of the high-voltage cable of the electric vehicle. The high-voltage cable of the electric vehicle mainly plays the role of energy transmission, and the battery energy needs to be transmitted to each subsystem. Therefore, the designed high-voltage wire harness of the electric vehicle must meet the requirements of high-voltage and high-current transmission. The high-voltage cable of the electric vehicle withstands a high voltage, which can currently reach up to 800V, and a large current, with a rated current of up to 600A. The electric vehicle connector contact generally includes a pin 9 and an elastic socket 11. Taking the crown spring type as an example, the crown spring type contact has a built-in cage-shaped crown spring 10. The crown spring is generally stamped from a beryllium bronze strip. A plurality of inwardly protruding spring strips are arranged between the upper and lower ends of the crown spring, which can maintain elasticity and prevent failure, and can maintain good electrical contact between the crown spring and the pin in the socket. It can also prevent the pin from damaging the crown spring.

[0024] The utility model discloses a new energy vehicle high voltage wire harness electric inspection module, comprising an electric inspection module upper seat 1, an electric inspection module base 2, a reed electric inspection probe 3, a reed electric inspection spring 4, a terminal electric inspection probe 5, a terminal electric inspection spring 6, a circular boss 7, and a guide cylinder 8. The upper seat 1 of the electric inspection module is threadedly connected with the base 2 of the electric inspection module, and they cooperate with each other and are placed on the electric inspection table; the upper seat 1 of the electric inspection module is provided with a groove whose shape matches the appearance of the high-voltage connector, and the high-voltage connector is placed in the groove; the upper seat 1 of the electric inspection module and the base 2 of the electric inspection module are provided with corresponding through holes, and the terminal electric inspection probe 5 passes through the through hole of the upper seat 1 of the electric inspection module, and the bottom end is located in the through hole of the base 2 of the electric inspection module, and there is a gap with the bottom of the through hole of the base 2 of the electric inspection module; the terminal electric inspection probe 5 is cylindrical in shape, which can only detect the terminal, and cannot confirm whether there is a terminal spring inside; the lower part of the electric inspection probe 5 is wrapped with a terminal electric inspection spring 6; two circular bosses 7 are threadedly connected in the oblong groove of the upper seat 1 of the electric inspection module, and the material is polyurethane, which can effectively prevent the high-voltage connector from being scratched when pressed into the upper seat 1 of the electric inspection module. The upper surfaces of the circular bosses 7 are respectively threadedly connected to the cylindrical guide cylinders 8, and the guide cylinders 8 pass through the through holes of the upper seat 1 of the electric inspection module and the base 2 of the electric inspection module; the reed electric inspection probe 3 is placed in the guide cylinder 8, and there is a gap between the bottom end and the bottom of the through hole of the base 2 of the electric inspection module; the upper end of the reed electric inspection probe 3 is a large head and serrated to ensure full contact with the high-voltage terminal reed on the high-voltage connector, and the lower part is wound with a reed electric inspection spring 4; one end of the reed electric inspection spring 4 is fixed on the boss in the middle of the reed electric inspection probe 3, and the other end is ground on the electric inspection table, and the boss in the middle of the reed electric inspection probe 3 can prevent the reed electric inspection probe 3 from shaking;

[0025] When the high-voltage connector is pressed into the upper seat 1 of the electrical inspection module, the terminal spring of the high-voltage connector contacts the upper end of the spring electrical inspection probe 3, and the spring electrical inspection probe 3 compresses the spring electrical inspection spring 4, causing the spring electrical inspection probe 3 to move downward and contact the circuit board on the electrical inspection table, energizing it, and the inspection passes.

[0026] The terminal electric detection probe 5 and the terminal electric detection spring 6 are installed on the upper seat 1 of the electric detection module, and the terminal electric detection probe 5 is cylindrical in shape and is used to detect terminals without reeds. The terminal electric detection probe 5 and the reed electric detection probe 3 are designed on the same electric detection module, and two types of terminals can be detected as needed, with or without reeds. Example

[0027] The electric inspection module upper seat 1 of the electric inspection module for the high-voltage wiring harness of a new energy vehicle of the utility model is threadedly connected to the electric inspection module base 2, which cooperate with each other and are placed on the electric inspection table. The electric inspection module upper seat 1 is designed with a groove whose shape cooperates with the appearance of the high-voltage connector, and the high-voltage connector is placed in the groove; the electric inspection module upper seat 1 and the electric inspection module base 2 are provided with corresponding through holes, and the terminal electric inspection probe 5 passes through the through hole of the electric inspection module upper seat 1, and the bottom end is located in the through hole of the electric inspection module base 2, and there is a gap with the bottom of the through hole of the electric inspection module base 2; the terminal electric inspection probe 5 is cylindrical in shape, which can detect the terminal, but cannot confirm whether there is a terminal spring inside the terminal, and is used to detect connector terminals without springs. The lower part of the terminal electric inspection probe 5 is wrapped with a terminal electric inspection spring 6. The reed electric detection probe 3 passes through the through hole of the upper seat 1 of the electric detection module, and the bottom end is located in the through hole of the base 2 of the electric detection module, and there is a gap with the bottom of the through hole of the base 2 of the electric detection module; the reed electric detection probe 3 has a large head and a sawtooth shape to ensure full contact with the high-voltage terminal reed on the high-voltage connector; the upper seat 1 of the electric detection module is threaded with two circular bosses 7, and the material is polyurethane, which can effectively prevent the high-voltage connector from being scratched when pressed into the upper seat 1 of the electric detection module. The upper surface of the circular boss 7 is also threaded with a cylindrical guide cylinder 8. The lower part of the reed electric detection probe 3 is wrapped with a reed electric detection spring 4, and the reed electric detection spring 4 passes through the through hole of the base 2 of the electric detection module, and the entire electric detection module is placed on the electric detection table. When the high-voltage connector is pressed into the upper seat 1 of the electric detection module, the terminal reed of the high-voltage connector contacts the reed electric detection probe 3, and the reed electric detection probe 3 compresses the reed electric detection spring 4 to compress, so that the reed electric detection probe 3 moves downward and contacts the circuit board on the electric detection table, so that it is powered on, and the electric detection module is powered on and starts to work. When the work is finished, the high-voltage connector is removed, the reed electric inspection spring 4 rebounds, the reed electric inspection probe 3 moves upward, disconnects the circuit, and the work is finished. When the two reed electric inspection probes 3 are conducting electric inspection on the high-voltage wiring harness product, the reed electric inspection probe 3 will go deep into the terminal. When there is a reed in the terminal, the probe and the reed will form a complete loop, and an electrical signal will be fed back to the PC of the electric inspection station. The reed exists and the test is passed. If there is no reed in the terminal, the reed electric inspection probe cannot contact the reed when it goes deep, and the reed electric inspection probe cannot form a complete loop with the reed, and no electrical signal can be fed back. The PC end of the electric inspection station will recognize that the reed does not exist, and the test fails. The reed electric inspection probe can more intuitively and accurately detect the reed of the high-voltage terminal on the high-voltage connector, realize 100% detection of the reed, ensure the accuracy of the product, and the detection data is easy to trace, which is highly practical in the mass production process. It reduces the easy omission and inaccuracy of the detection. Compared with the ordinary electric inspection module, this detection module can detect the reed of the high-voltage terminal on the basis of the basic electric inspection function, which is more economical, efficient and convenient.

[0028] The above description is only a preferred example of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the present invention shall be included in the protection scope of the present invention.

Claims

1. A new energy vehicle high voltage wire harness electrical inspection module, characterized in that: The upper seat (1) of the electric inspection module is threadedly connected to the base (2) of the electric inspection module, and they cooperate with each other and are placed on the electric inspection table; the upper seat (1) of the electric inspection module is provided with a groove whose shape matches the appearance of the high-voltage connector, and the high-voltage connector is placed in the groove; the upper seat (1) of the electric inspection module and the base (2) of the electric inspection module are provided with through holes corresponding to each other, and the terminal electric inspection probe (5) passes through the through hole of the upper seat (1) of the electric inspection module, and the bottom end is located in the through hole of the base (2) of the electric inspection module, and there is a gap with the bottom of the through hole of the base (2) of the electric inspection module; the terminal electric inspection probe (5) is cylindrical in shape, and the lower part is wound with a terminal electric inspection spring (6); the oblong groove of the upper seat (1) of the electric inspection module is provided with a terminal electric inspection spring (6) and a terminal electric inspection probe (5) is provided with a terminal electric inspection probe (5) and a terminal electric inspection probe (5) ... , two circular bosses (7) are threadedly connected, the upper surfaces of the circular bosses (7) are respectively threadedly connected to cylindrical guide cylinders (8), and the guide cylinders (8) pass through the through holes of the upper seat (1) and the base (2) of the electric inspection module; the reed electric inspection probe (3) is placed in the guide cylinder (8), and a gap is formed between the bottom end and the bottom of the through hole of the base (2) of the electric inspection module; the upper end of the reed electric inspection probe (3) is a large head and is serrated, which is in full contact with the high-voltage terminal reed on the high-voltage connector, and the lower part is wound with a reed electric inspection spring (4); one end of the reed electric inspection spring (4) is fixed on the boss in the middle of the reed electric inspection probe (3), and the other end is ground on the electric inspection table.

2. The new energy vehicle high voltage wire harness electric inspection module according to claim 1 is characterized in that: The terminal electric detection probe (5) and the terminal electric detection spring (6) are mounted on the upper seat (1) of the electric detection module, and the terminal electric detection probe (5) is cylindrical in shape and detects terminals without springs.

3. The new energy vehicle high voltage wire harness electric inspection module according to claim 1 is characterized in that: The circular boss (7) is made of polyurethane.

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