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Novel battery pack high-voltage control method

A high-voltage control and battery pack technology, which is applied in the field of high-voltage control of new battery packs and high-voltage power-on control of electric vehicle battery packs, can solve problems such as the adhesion of the total positive relay, failure to start and loss of electric vehicles, etc., and achieve reduction Control link, shorten the time of high-voltage power supply, and avoid the effect of failure to start and unable to drive

Inactive Publication Date: 2020-09-11
DAYUN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the electromagnetic environment of an electric vehicle is very complex, and the electric vehicle may cause delay and loss of transmission data due to electromagnetic interference, and the vehicle controller 30 receives the data transmitted by the motor controller and the battery manager through the CAN communication network. Realize the completion of high-voltage power-on, the high-voltage power-on process will cause the total positive relay to stick due to data transmission delay, and the electric vehicle will fail to start and cannot drive

Method used

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  • Novel battery pack high-voltage control method

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Embodiment Construction

[0010] The high-voltage circuit of the present invention includes: control power supply 10; battery manager 20; battery module 101; pre-charging group R1; total negative relay k1; pre-charging relay k2; total positive relay k3; fast charging relay k4; OBC relay k5; PTC Relay k6; air conditioner relay k7; main circuit fuse FU0; fast charge fuse FU1; OBC fuse FU2; PTC fuse FU3; air conditioner fuse FU4; motor control fuse FU5; ; PTC; air conditioner; motor controller; drive motor. The total positive relay k3 and the total negative relay k1 control the high-voltage power transmission of all high-voltage components of the electric vehicle. All high-voltage components are connected in parallel at the back end of the total positive relay k3 and the total negative relay k1. The front end of k1; all high-voltage components, including external charging, need high-voltage power to complete the pre-charging, and then control the power-on high-voltage power; after the pre-charging is comp...

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Abstract

The invention relates to the technical field of power batteries of electric vehicles, in particular to a high-voltage power-on control method for a battery pack of an electric vehicle, and particularly relates to a novel high-voltage control method for the battery pack. According to the invention, the battery manager independently completes relay control and front-end and rear-end voltage value data acquisition in the high-voltage process of the electric vehicle; a CAN communication network does not need to receive a vehicle control unit control relay instruction and a motor controller does not need to send a pre-charging voltage value, and high-voltage power-on delay and power-on failure caused by communication interruption due to data error frames caused by electromagnetic interference on the CAN communication network in the high-voltage power-on process are avoided. The high-voltage power-on time is shortened, and the high-voltage power-on control link is reduced; and the electric vehicle is prevented from failing to drive.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power batteries, in particular to a high-voltage power-on control method for a battery pack of an electric vehicle, specifically a novel high-voltage control method for a battery pack. Background technique [0002] With the rapid development of research and development, production and sales of electric vehicles in the world, the application range of electric vehicles is becoming more and more extensive. The battery pack high-voltage system of electric vehicles includes high-voltage electrical equipment such as drive motors, motor controllers, electric air conditioners, OBC (on-board chargers), PTC (heating systems), and power batteries that supply drive motor power and operation. At present, the high-voltage power-on scheme of the electric vehicle battery pack is to control the main positive relay K3 to open and close, the pre-charge relay K2 to open and close through the vehicle controll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10
CPCB60L58/10Y02T10/70Y02T90/16
Inventor 吕科成王明东王琦
Owner DAYUN AUTOMOBILE CO LTD
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