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Intelligent wireless acquisition device for parameters of lithium-ion power batteries for vehicles

A power battery and wireless acquisition technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve problems affecting BMS precision and accuracy, difficult to judge faults, heavy workload, etc., to reduce calculation processing Effects of load, error elimination, and usage reduction

Inactive Publication Date: 2013-03-20
CHONGQING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The workload of wiring is heavy, it is easy to make mistakes, and it is not easy to judge if a fault occurs; different lengths of wires will cause different attenuation of signals when they are transmitted on the wires, which will eventually affect the accuracy and accuracy of the BMS

Method used

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  • Intelligent wireless acquisition device for parameters of lithium-ion power batteries for vehicles

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Embodiment Construction

[0012] refer to figure 1 , this specific embodiment adopts the following technical solutions: it includes the lower end of the substrate 1, the current sensor 2, the internal groove 3 of the substrate, the silicon substrate 4 of the intelligent processing unit, the substrate 5, the wireless transmission module 6, the cover plate 7, and the thermally conductive silicone grease layer 8 and a temperature sensor 9, the bottom of the substrate 5 is coated with a heat-conducting silicone grease layer 8, the top of the substrate 5 is screwed with a cover plate 7, the unit silicon substrate 4, the wireless transmission module 6 and the temperature sensor 9 are arranged on the substrate 5 and the cover In the cavity formed by the board 7 , the lower end 1 of the substrate is arranged below the substrate 5 , and the current sensor 2 is nested on the lower end 1 of the substrate.

[0013] The base plate 5 and the cover plate 7 are made of metal materials such as aluminum or copper, which...

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Abstract

The invention discloses an intelligent wireless acquisition device for parameters of lithium-ion power batteries for vehicles, relating to the technical field of intelligent wireless sensors. The bottom of a base plate (5) is coated with a thermal-conducting silicone grease layer (8), the upside of the base plate (5) is in threaded connection with a cover plate (7), a unit silicon substrate (4), a wireless transmission module (6) and a temperature sensor (9) are arranged in a cavity formed by the base plate (5) and the cover plate (7), a base plate lower end (1) is arranged below the base plate (5), a current sensor (2) is embedded on the base plate lower end (1), and a wire on the current sensor (2) is connected with the unit silicon substrate (4) through a groove (3) in the base plate. According to the invention, the computational processing load of a BMS (battery management system) and the application of the wireless transmission module can be reduced, the application amount of wires between the BMS and a battery monomer is greatly reduced, the errors introduced when signals are transmitted on the wires are eliminated, and the precision and accuracy of data acquisition are improved, so that the BMS manages power batteries more securely and efficiently.

Description

Technical field: [0001] The invention relates to the technical field of intelligent wireless sensors, in particular to an intelligent wireless acquisition device for vehicle lithium-ion power battery parameters. Background technique: [0002] At present, the battery management system (BMS) is mainly used in new energy vehicles such as electric vehicles and hybrid vehicles. Its management objects are vehicle power batteries, such as lithium-ion batteries and lithium-polymer batteries. BMS is an electronic device that monitors the state of the battery in real time. Its main function is to improve the utilization rate of battery energy, prevent the battery from overcharging and overdischarging, and prolong the service life of the battery. [0003] Vehicle power battery packs are composed of dozens or even more battery cells connected in series or in parallel. BMS must manage each battery cell, and a large number of wires are required to connect each battery cell. The workload ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/42
CPCY02E60/12Y02E60/10
Inventor 李鑫
Owner CHONGQING UNIV OF TECH
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