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Lithium-ion battery pack system with high electromagnetic compatibility

A lithium-ion battery pack and electromagnetic compatibility technology, which is applied in the manufacture of battery pack components, non-aqueous electrolyte storage batteries, and electrolyte storage batteries, can solve problems such as high cost and difficulty in modification, and reduce conduction emission and radiation emission. , Enhancement and the effect of the ability to resist large current injection

Active Publication Date: 2015-12-09
SHANGHAI AEROSPACE POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent believes that the PCB board greatly affects the electromagnetic compatibility performance of the entire system, but it will cost a lot of money to rectify the PCB board, and some PCB boards inside the system have already been finalized, making it difficult to make major changes. Modify the PCB board to improve the electromagnetic compatibility performance

Method used

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  • Lithium-ion battery pack system with high electromagnetic compatibility
  • Lithium-ion battery pack system with high electromagnetic compatibility
  • Lithium-ion battery pack system with high electromagnetic compatibility

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Embodiment Construction

[0046] based on the following Figure 1 ~ Figure 3 , specifically explain the preferred embodiment of the present invention.

[0047] Such as figure 1 As shown, the present invention provides a lithium-ion battery pack system with high electromagnetic compatibility, comprising:

[0048] System frame 1;

[0049] Several battery modules 8, which are arranged in the system frame 1, and each battery module 8 includes several single cells connected in series or in parallel;

[0050] LECU (Local Electric Control Unit) component 2, which is fixed in the system frame 1;

[0051] BMU (Battery Management Unit, Battery Management Unit) component 3, which is fixed in the system frame 1;

[0052] A high-voltage wire harness 4, which connects several battery modules 8 in series, and the high-voltage wire harness 4 is connected to the system frame 1 through a high-voltage connector 9;

[0053] A low-voltage wiring harness 5, which is connected to the BMU component 3 and connected to the...

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Abstract

The invention discloses a lithium-ion battery pack system with high electromagnetic compatibility. The lithium-ion battery pack system comprises an outer system frame, a plurality of battery modules, a local electric control unit (LECU) assembly, a battery management unit (BMU) assembly, a high-voltage wire bundle, a low-voltage wire bundle, a communication wire bundle and a module sampling wire bundle, wherein a multi-layer structure is adopted by the high-voltage wire bundle; and a vertical wiring mode is adopted by the high-voltage wire bundle and the low-voltage wire bundle, so that the radio frequency interference resistance of the system is enhanced. A magnetic ring is arranged on a low-voltage connector, so that the conducted interference resistance and the bulk current injection resistance of the system are enhanced; and external conducted emission of high-frequency noise in the system through the low-voltage wire bundle can also be reduced. A twisted-pair connection mode is adopted by the communication wire bundle, so that the radio frequency interference resistance of the system is enhanced; and external radiated emission of high-frequency noise is also reduced. Through a sealing mode and a grounding mode of a metal housing of a printed circuit board (PCB) in the BMU assembly, the radio frequency interference resistance of the PCB and the conducted interference resistance of the system are enhanced.

Description

technical field [0001] The invention relates to the field of lithium-ion battery systems for electric vehicles, in particular to a lithium-ion battery pack system with high electromagnetic compatibility. Background technique [0002] Electromagnetic Compatibility EMC refers to the ability of equipment to work normally in an electromagnetic environment. In the power system, when the voltage and current of the circuit change rapidly in a very short period of time, the external environment of the equipment will undergo complex changes, resulting in electromagnetic interference. [0003] The battery pack system is an important component in an electric vehicle. A battery pack system with good electromagnetic compatibility can not only ensure that the system can work normally in the electromagnetic environment inside the vehicle, but also avoid the system’s damage to other electronic devices in the vehicle. Generate electromagnetic interference, which greatly improves the reliabi...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M2/20B60L11/18H01M50/24H01M50/249H01M50/284H01M50/502
CPCH01M10/058B60L50/66B60L58/19H01M2220/20H01M50/502Y02T90/16Y02T10/70Y02E60/10Y02P70/50
Inventor 郁辰侯敏李立楠那伟曹辉王东
Owner SHANGHAI AEROSPACE POWER TECH
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