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Vehicle-mounted shunt-wound storage battery pack monitoring apparatus

A battery pack and monitoring device technology, applied in battery circuit devices, circuit devices, secondary batteries, etc., can solve problems such as the increase in the number of battery cells, the inability to monitor and manage battery cells, the safety of power systems, and the hidden dangers of reliability. , to achieve the effect of a wide range of monitoring

Inactive Publication Date: 2016-12-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while increasing the capacity of the battery pack, the number of battery cells is also greatly increased
The traditional series battery monitoring device designed for series battery packs cannot effectively monitor and manage a considerable number of battery cells in a parallel state. left a hidden danger

Method used

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  • Vehicle-mounted shunt-wound storage battery pack monitoring apparatus
  • Vehicle-mounted shunt-wound storage battery pack monitoring apparatus

Examples

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Embodiment

[0024] Such as figure 1 As shown, the battery pack is formed by connecting two parallel battery modules 102 in series, and each parallel battery module 102 is formed by connecting six battery cells in parallel. The size of the battery unit given in the embodiment is an 18650-type cylindrical ternary material battery. The positive pole of each battery cell in the parallel battery module 102 is connected in series with a shunt resistor 130 with a known resistance value, and then connected together through the positive current collector plate, while the negative pole is directly connected through the current collector plate. According to the requirements of the system design, only pole temperatures of two battery cells are measured, but in some embodiments, there may be more temperature measurement points. The measurement gating unit is used for gating to measure the temperature at each temperature point or the voltage at both ends of each series shunt resistor 130 . The electr...

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Abstract

The invention relates to a vehicle-mounted shunt-wound storage battery pack monitoring apparatus. The shunt-wound storage battery pack comprises multiple shunt-wound storage battery modules which are connected in series; each shunt-wound storage battery module comprises multiple single batteries connected in parallel; the vehicle-mounted shunt-wound storage battery pack monitoring apparatus comprises a storage battery pack controller, a shunt-wound storage battery module monitoring assembly, and a load monitoring assembly, wherein the storage battery pack controller is used for obtaining the monitored data of the vehicle-mounted shunt-wound storage battery pack and monitoring the vehicle-mounted shunt-wound storage battery pack; the shunt-wound storage battery module monitoring assembly is connected with the storage battery pack controller and the shunt-wound storage battery modules separately for obtaining the voltage of the shunt-wound storage battery modules, and the current and temperature of each single battery therein; and the load monitoring assembly is connected with the storage battery pack controller and the shunt-wound storage battery modules separately for obtaining the primary circuit current and the total voltage of the shunt-wound storage battery pack for realizing driving control on the load. Compared with the prior art, the vehicle-mounted shunt-wound storage battery pack monitoring apparatus is applicable to shunt-wound monitoring, wide in monitoring range, and has other advantages.

Description

technical field [0001] The invention relates to the field of battery management of electric vehicles and plug-in hybrid electric vehicles, in particular to a monitoring device for vehicle-mounted parallel storage battery packs. Background technique [0002] At present, with the rapid development of electric vehicles and plug-in hybrid electric vehicles, the requirements for driving range and reliability of power supply systems are getting higher and higher. Under the existing battery material system, it is difficult to make a battery with higher specific energy. In engineering applications, the parallel connection of batteries is used to increase the battery capacity and thus increase the driving range of electric vehicles or plug-in hybrid vehicles. However, while increasing the capacity of the battery pack, the number of battery cells also increases significantly. The traditional series battery monitoring device designed for series battery packs cannot effectively monitor...

Claims

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Application Information

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IPC IPC(8): H01M10/42
CPCH01M10/4207H01M10/4257H01M2010/4271Y02E60/10
Inventor 魏学哲戴海峰王学远
Owner TONGJI UNIV
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