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Battery managing system testing platform

A technology for battery pack management and system testing, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables. It can solve the problems of time and energy consumption, high testing cost, and inconvenient testing, and achieve convenient testing, simple structure, and high precision. high effect

Inactive Publication Date: 2010-06-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is time-consuming and energy-consuming to install the BMS in the electric vehicle for testing, which is not only inconvenient but also expensive

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1. Simulation test of lithium-ion BMS for pure electric cars.

[0070] The simulation test of lithium-ion BMS for pure electric cars mainly includes battery pack data sampling accuracy test, SOC estimation accuracy test, and common battery pack fault test.

[0071] The process of battery pack data sampling accuracy test is as follows: Figure 7 shown. The main control computer of the test platform outputs the battery pack characteristic data through the CAN bus according to the user's settings, including the battery pack's single cell voltage setting data, charging and discharging current setting data and battery pack temperature setting data. At the same time, the above battery pack characteristic data is also output to the battery pack data acquisition and analysis software for comparison and analysis with the BMS sampling data. After receiving the single battery voltage setting data, the high-precision battery voltage simulator converts the data into the...

Embodiment 2

[0078] Embodiment 2, the simulation test method of the nickel-metal hydride power battery pack controller used in the hybrid electric vehicle.

[0079] Another embodiment of the present invention is used to test a power battery pack management system. The BMS is used to manage nickel-metal hydride power batteries, and the BMS and the nickel-hydrogen power battery pack are used together for hybrid electric vehicles.

[0080] Hybrid electric vehicle Ni-MH power battery pack is generally composed of 120 to 280 single cells, the total voltage range is 100 to 500V, and the working voltage range of each single cell is 0.7 to 1.65V. Generally, 5 to 10 battery cells are connected in series to form a battery pack module, and then the modules are connected in series to form the entire power battery pack.

[0081] The BMS test platform simulates the Ni-MH power battery pack through the following method: Calculate the voltage range of the module battery according to the number of single c...

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Abstract

The invention discloses a battery managing system (BMS) testing platform comprising a testing platform main control computer, a high-precision cell voltage simulator, a high-precision large-current constant-current source, a high-precision thermotank, a battery managing system to be tested, a whole vehicle controller simulator and the like which are connected by CAN buses. The battery managing system is connected with a cell box air cooling device, a vehicle relay assembly and the like. The battery managing system testing platform can truly simulate the output state of a battery, comprising single cell voltage, total voltage, charging and discharging current, temperature and the like of the battery, can complete various communication and command functions, protection functions, battery heavy current applying process between the battery managing system and the whole vehicle, and the test and the verification on the functions of overhead protection and the like of the battery. The invention can carry out testing evaluation on the data collection precision of the battery managing system, the evaluation precision of the charge state of the battery and the like.

Description

technical field [0001] The invention relates to a testing device for a battery pack management system, in particular to a test platform for the battery pack management system. Background technique [0002] Batteries are widely used in various fields, especially in electric vehicles in recent years, power battery components such as lithium-ion batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lead-acid batteries, etc. are regarded as one of the key components. [0003] In the existing power battery components, an electronic control device is included, which is called a battery pack management system (hereinafter referred to as BMS). The battery pack management system monitors the operating parameters of the power battery pack such as voltage, total voltage, temperature, charge and discharge current, etc., and performs safety protection and balanced management on the battery pack based on this information, so as to prolong the life of the power battery pack ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R31/36
Inventor 齐铂金杜晓伟郑敏信张伟
Owner BEIHANG UNIV
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