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High voltage connector performance introduction

High voltage connector performance introduction

  • Categories:Company News
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  • Time of issue:2021-03-04
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(Summary description)The high-voltage connector is a functional element that makes the circuit connected and disconnected by means of electrical signals or mechanical forces. It consists of a fixed-end electrical connector (hereinafter referred to as socket) and a free-end electrical connector (hereinafter referred to as plug). .

 



 

  

The structure of a high-voltage connector generally includes: a contact pair, a sealing ring, a docking locking mechanism, a bracket, a housing, a positioning mechanism, a high-voltage interlocking mechanism, a shielding mechanism, an insulating structure, etc. General termination methods include welding, crimping, via connection, screw connection and so on. There are also various installation methods, including panel type, cable type, nut type, through-wall type and so on. The overall structure needs to consider the suitability of manipulation, including the size of the manipulation space, the structure of preventing mishandling, and the indication of the connection in place. The internal structure needs to be considered: the detachability of the contact, the type and structure of the contact, and so on. The performance of high-voltage connectors is quite different from that of low-voltage connectors. The electrical, mechanical and environmental performance of high-voltage connectors have higher requirements. Mainly include the following aspects:

1. High voltage connector electrical performance

Electrical performance includes working voltage, rated current, contact resistance of inner conductor and outer conductor, characteristic impedance, voltage standing wave ratio, shielding performance and anti-interference performance, etc. The rated voltage of the connector must be greater than the peak voltage of the device. Generally, it is necessary to test the withstand voltage, insulation resistance, creepage distance, etc. of the connector according to the standard; at the same time, confirm the normal use current of the device, and the rated current of the connector must be greater than the normal use of the device Current. When there is a peak current, you need to confirm the peak current time. Generally, you need to measure the terminal contact resistance, terminal temperature rise, terminal retention force, cable crimping force, and connector locking device strength of the connector according to the standard. In order to ensure the safety performance of the connection, a high-voltage control loop is generally formed through a high-voltage interlock to avoid potential hazards caused by the disconnection of the high-voltage loop, and the vehicle control system needs to be tested and calibrated. In addition, EMC requirements for high-voltage connectors are becoming increasingly prominent. At present, a shielding design can be required to meet 360-degree shielding. The shielding gap is required to be less than 2mm or electromagnetic sealing gaskets are required. Generally, the shielding effectiveness needs to be measured according to standards.

 

2. Mechanical properties of high voltage connectors

Mechanical energy mainly includes vibration shock, mechanical life, single hole separation and total separation force. Generally, the number of uses of the product, the reliability of the connection and locking method, etc. will be evaluated. As the part that is not frequently disassembled, the high-voltage connector in the car is generally defined as plugging and unplugging more than 50 times to determine whether the mechanical life of the connector meets the requirements.

 

3. High voltage connector environmental performance

Environmental performance includes temperature, humidity, vibration, shock, salt spray, dust and sealing performance (including water pressure, rain), etc. First, you need to confirm the maximum ambient temperature of the device. The working temperature of the connector must be greater than the ambient temperature of the device plus the temperature rise of the terminal when the rated current is passed. And whether the working temperature of the connector standard meets, it is necessary to test the aging, temperature and humidity, high and low temperature impact of the connector according to the standard. In terms of environmental resistance performance of high-voltage connectors, IP protection performance has the greatest impact. It is generally verified by means of water tightness test or air tightness test. The airtightness test does not have a negative impact on the product and is currently widely used. In addition, whether the flame retardant performance can meet the standard is also an important safety index.

High voltage connector performance introduction

(Summary description)The high-voltage connector is a functional element that makes the circuit connected and disconnected by means of electrical signals or mechanical forces. It consists of a fixed-end electrical connector (hereinafter referred to as socket) and a free-end electrical connector (hereinafter referred to as plug). .

 



 

  

The structure of a high-voltage connector generally includes: a contact pair, a sealing ring, a docking locking mechanism, a bracket, a housing, a positioning mechanism, a high-voltage interlocking mechanism, a shielding mechanism, an insulating structure, etc. General termination methods include welding, crimping, via connection, screw connection and so on. There are also various installation methods, including panel type, cable type, nut type, through-wall type and so on. The overall structure needs to consider the suitability of manipulation, including the size of the manipulation space, the structure of preventing mishandling, and the indication of the connection in place. The internal structure needs to be considered: the detachability of the contact, the type and structure of the contact, and so on. The performance of high-voltage connectors is quite different from that of low-voltage connectors. The electrical, mechanical and environmental performance of high-voltage connectors have higher requirements. Mainly include the following aspects:

1. High voltage connector electrical performance

Electrical performance includes working voltage, rated current, contact resistance of inner conductor and outer conductor, characteristic impedance, voltage standing wave ratio, shielding performance and anti-interference performance, etc. The rated voltage of the connector must be greater than the peak voltage of the device. Generally, it is necessary to test the withstand voltage, insulation resistance, creepage distance, etc. of the connector according to the standard; at the same time, confirm the normal use current of the device, and the rated current of the connector must be greater than the normal use of the device Current. When there is a peak current, you need to confirm the peak current time. Generally, you need to measure the terminal contact resistance, terminal temperature rise, terminal retention force, cable crimping force, and connector locking device strength of the connector according to the standard. In order to ensure the safety performance of the connection, a high-voltage control loop is generally formed through a high-voltage interlock to avoid potential hazards caused by the disconnection of the high-voltage loop, and the vehicle control system needs to be tested and calibrated. In addition, EMC requirements for high-voltage connectors are becoming increasingly prominent. At present, a shielding design can be required to meet 360-degree shielding. The shielding gap is required to be less than 2mm or electromagnetic sealing gaskets are required. Generally, the shielding effectiveness needs to be measured according to standards.

 

2. Mechanical properties of high voltage connectors

Mechanical energy mainly includes vibration shock, mechanical life, single hole separation and total separation force. Generally, the number of uses of the product, the reliability of the connection and locking method, etc. will be evaluated. As the part that is not frequently disassembled, the high-voltage connector in the car is generally defined as plugging and unplugging more than 50 times to determine whether the mechanical life of the connector meets the requirements.

 

3. High voltage connector environmental performance

Environmental performance includes temperature, humidity, vibration, shock, salt spray, dust and sealing performance (including water pressure, rain), etc. First, you need to confirm the maximum ambient temperature of the device. The working temperature of the connector must be greater than the ambient temperature of the device plus the temperature rise of the terminal when the rated current is passed. And whether the working temperature of the connector standard meets, it is necessary to test the aging, temperature and humidity, high and low temperature impact of the connector according to the standard. In terms of environmental resistance performance of high-voltage connectors, IP protection performance has the greatest impact. It is generally verified by means of water tightness test or air tightness test. The airtightness test does not have a negative impact on the product and is currently widely used. In addition, whether the flame retardant performance can meet the standard is also an important safety index.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2021-03-04
  • Views:0
Information

The high-voltage connector is a functional element that makes the circuit connected and disconnected by means of electrical signals or mechanical forces. It consists of a fixed-end electrical connector (hereinafter referred to as socket) and a free-end electrical connector (hereinafter referred to as plug). .

 

co3AyP0LRFS2cl6sAuTqAQ.jpg

 

  

The structure of a high-voltage connector generally includes: a contact pair, a sealing ring, a docking locking mechanism, a bracket, a housing, a positioning mechanism, a high-voltage interlocking mechanism, a shielding mechanism, an insulating structure, etc. General termination methods include welding, crimping, via connection, screw connection and so on. There are also various installation methods, including panel type, cable type, nut type, through-wall type and so on. The overall structure needs to consider the suitability of manipulation, including the size of the manipulation space, the structure of preventing mishandling, and the indication of the connection in place. The internal structure needs to be considered: the detachability of the contact, the type and structure of the contact, and so on. The performance of high-voltage connectors is quite different from that of low-voltage connectors. The electrical, mechanical and environmental performance of high-voltage connectors have higher requirements. Mainly include the following aspects:

1. High voltage connector electrical performance

Electrical performance includes working voltage, rated current, contact resistance of inner conductor and outer conductor, characteristic impedance, voltage standing wave ratio, shielding performance and anti-interference performance, etc. The rated voltage of the connector must be greater than the peak voltage of the device. Generally, it is necessary to test the withstand voltage, insulation resistance, creepage distance, etc. of the connector according to the standard; at the same time, confirm the normal use current of the device, and the rated current of the connector must be greater than the normal use of the device Current. When there is a peak current, you need to confirm the peak current time. Generally, you need to measure the terminal contact resistance, terminal temperature rise, terminal retention force, cable crimping force, and connector locking device strength of the connector according to the standard. In order to ensure the safety performance of the connection, a high-voltage control loop is generally formed through a high-voltage interlock to avoid potential hazards caused by the disconnection of the high-voltage loop, and the vehicle control system needs to be tested and calibrated. In addition, EMC requirements for high-voltage connectors are becoming increasingly prominent. At present, a shielding design can be required to meet 360-degree shielding. The shielding gap is required to be less than 2mm or electromagnetic sealing gaskets are required. Generally, the shielding effectiveness needs to be measured according to standards.

 

2. Mechanical properties of high voltage connectors

Mechanical energy mainly includes vibration shock, mechanical life, single hole separation and total separation force. Generally, the number of uses of the product, the reliability of the connection and locking method, etc. will be evaluated. As the part that is not frequently disassembled, the high-voltage connector in the car is generally defined as plugging and unplugging more than 50 times to determine whether the mechanical life of the connector meets the requirements.

 

3. High voltage connector environmental performance

Environmental performance includes temperature, humidity, vibration, shock, salt spray, dust and sealing performance (including water pressure, rain), etc. First, you need to confirm the maximum ambient temperature of the device. The working temperature of the connector must be greater than the ambient temperature of the device plus the temperature rise of the terminal when the rated current is passed. And whether the working temperature of the connector standard meets, it is necessary to test the aging, temperature and humidity, high and low temperature impact of the connector according to the standard. In terms of environmental resistance performance of high-voltage connectors, IP protection performance has the greatest impact. It is generally verified by means of water tightness test or air tightness test. The airtightness test does not have a negative impact on the product and is currently widely used. In addition, whether the flame retardant performance can meet the standard is also an important safety index.

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