Unlock instant, AI-driven research and patent intelligence for your innovation.

Battery pack offline detection voltage sampling system, method and device, terminal and storage medium

A voltage sampling and line detection technology, which is applied in measurement devices, measurement current/voltage, voltage/current isolation, etc., can solve the problems of limited coverage of detection faults, large fluctuation of reported voltage values, and unstable sampling results. It is convenient to quickly locate problems, improve detection coverage, and improve the effect of investigation efficiency

Pending Publication Date: 2022-07-29
CHINA FIRST AUTOMOBILE
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following situations that may lead to abnormalities in single voltage sampling but cannot be identified: 1. Due to the impact of the PACK assembly process on the sampling chip or random hardware failures, the sampling chip is in an abnormal state and the sampling can be completed, but the sampling result is unstable , the reported voltage value fluctuates greatly, sometimes normal, sometimes abnormal; 2. The sampling line of the single cell is weakly welded, and the contact resistance is sometimes large and sometimes small, resulting in fluctuations in the sampling results; 3. Abnormal chemical reactions inside the battery cell, and the terminal voltage drops rapidly or rise
The test method of statically detecting the voltage of a single cell has very limited coverage of detecting faults

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery pack offline detection voltage sampling system, method and device, terminal and storage medium
  • Battery pack offline detection voltage sampling system, method and device, terminal and storage medium
  • Battery pack offline detection voltage sampling system, method and device, terminal and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] figure 1 It is a structural block diagram of a battery pack offline detection voltage sampling system according to an exemplary embodiment, including: a battery PACK offline CAN communication terminal, a human-computer interaction module, a battery PACK offline controller, and a voltage detection module. The detection module is a part of the structure of the battery management system on the new energy vehicle. The voltage detection module includes: a single voltage sensor, a total voltage sensor, a CAN communication device, and a voltage processing unit. The voltage processing unit is respectively connected with the single voltage sensor and the total voltage sensor. The sensor is electrically connected to the CAN communication device, the battery pack offline controller is electrically connected to the CAN communication device through the battery pack offline CAN communication terminal, and the human-computer interaction module is connected to the battery pack offline c...

Embodiment 2

[0068] figure 2 It is a flow chart of a method for sampling a battery pack offline detection voltage according to an exemplary embodiment, and is applied to the system described in Embodiment 1. The embodiment of the present invention is implemented by a terminal, and the terminal may be a smart phone, a desktop computer or Notebook computers, cloud terminals, etc. The terminals include at least a CPU, etc. The specific steps include:

[0069] Step S10, in response to the battery pack offline detection voltage sampling instruction, the battery PACK offline controller sends the voltage processing unit to start the offline voltage detection and start instruction, and the specific content is as follows:

[0070] The command sending and result readback of the battery PACK offline controller are implemented based on the UDS diagnostic service (unified diagnostic service, a diagnostic communication protocol in the environment of automotive electronic ECUs, usually implemented based...

Embodiment 3

[0099] Figure 5 It is a structural block diagram of a battery pack offline detection voltage sampling device according to an exemplary embodiment, applied to the system of the first embodiment, including:

[0100] The sending instruction module 210 is configured to, in response to the battery pack offline detection voltage sampling instruction, the battery PACK offline controller sends an instruction to enable offline voltage detection to the voltage processing unit;

[0101] The execution module 220 is used for the voltage processing unit to perform the voltage fluctuation detection after receiving the turn-on offline voltage detection turn-on instruction, and to generate voltage fluctuation detection result data and send it to the battery PACK offline controller;

[0102] The display result module 230, which displays the data, the battery PACK offline controller processes the received voltage fluctuation detection result data and sends it to the human-machine interaction mo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an off-line detection voltage sampling system, method and device, a terminal and a storage medium, and belongs to the technical field of batteries, and the method comprises the steps that a battery PACK off-line controller sends an off-line voltage detection starting instruction to a voltage processing unit in response to a battery pack off-line detection voltage sampling instruction; the voltage processing unit executes voltage fluctuation detection after receiving the off-line voltage detection starting instruction, generates voltage fluctuation detection result data and sends the voltage fluctuation detection result data to the battery PACK off-line controller; the battery PACK offline controller processes the received voltage fluctuation detection result data and then sends the data to the man-machine interaction module for display. According to the invention, functions of single voltage fluctuation detection, voltage curve feature identification and the like are added in a BMS program, so that a single voltage sampling function and battery body abnormity can be identified on the premise of not increasing cost.

Description

technical field [0001] The invention discloses an offline detection voltage sampling system, method, device, terminal and storage medium, and belongs to the technical field of batteries. Background technique [0002] When testing battery cells and modules offline, suppliers use high-precision voltage measurement terminals to measure the terminal voltages of all cells, and determine whether the battery cells are abnormal by checking whether they are within a reasonable range. When the battery pack is offline, the usual practice is to read the cell voltage results reported by the BMS after sampling and compare them with the voltage parameters provided by the battery supplier, which not only verifies whether the BMS sampling is normal, but also verifies Whether the battery itself is normal. Only when the battery body and BMS sampling are normal, the sampling results will be consistent with the voltage parameters provided by the battery supplier. The specific method is that th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/18G01R31/396G01R31/392
CPCG01R19/0084G01R15/18G01R31/396G01R31/392
Inventor 刘渺然刘轶鑫翟旭亮张伟杰杨雪枫荣常如
Owner CHINA FIRST AUTOMOBILE