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Electric vehicle low-voltage power supply system with battery balance adjustment and its control method

An electric vehicle and battery balancing technology, applied in battery/fuel cell control devices, electric vehicles, charge equalization circuits, etc., can solve the problem of inability to make early warning information, prompt safety, and inability to comprehensively evaluate the safety and reliability of power management modules And other issues

Active Publication Date: 2018-07-06
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now in most new energy vehicles, after the key signal is turned off, the power management module, which is the core of the power supply system, has no power supply. It is impossible to make early warning information prompts and ensure the safety of the next operation

Method used

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  • Electric vehicle low-voltage power supply system with battery balance adjustment and its control method
  • Electric vehicle low-voltage power supply system with battery balance adjustment and its control method
  • Electric vehicle low-voltage power supply system with battery balance adjustment and its control method

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0052] Embodiment, electric vehicle low-voltage power supply system with battery balance adjustment, see figure 1 As shown, it includes battery 1, No. 1 switch 2, No. 2 switch 3, power management module 4, low-voltage load 5, No. 1 node 6, No. 2 node 7, No. 3 node 8, key switch module 9, and vehicle control module 10. Switch No. 11, voltage sampling module 16 and power transfer module 17, the power management module includes a voltage difference equalization module 18 and a capacity difference equalization module 19, and the battery includes several cells; each cell The voltage acquisition terminals of each unit are respectively connected to the voltage sampling module, the power transfer terminals of each monomer are respectively connected to the power transfer module, and the power management module is respectively connected to the voltage sampling mo...

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PUM

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Abstract

The invention discloses an electric vehicle low voltage power supply system with a battery balance adjustment function and a control method of the electric vehicle low voltage power supply system, and relates to the technical field of electric vehicle power supply systems. The system comprises an electric vehicle double circuit power supply system, and can implement maintenance, self-checking and evaluating on a battery. The system comprises the battery, a first switch, a second switch, a power source management module, a low voltage load, a first node, a second node, a third node, a key switch module, a vehicle control module and a third switch; one end of the first switch, one end of the second switch and the positive electrode end of the battery are connected to the first node; the other end of the second switch, the other end of the third switch, the power source interface positive electrode end of the power source management module and the power source interface positive electrode end of the low voltage load are all connected to the second node; the negative electrode end of the battery, the power source interface negative electrode end of the power source management module, the power source interface negative electrode end of the low voltage load and the power source interface negative electrode end of the vehicle control module are all connected to the third node.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power supply systems, in particular to an electric vehicle low-voltage power supply system with battery balance adjustment and a control method thereof. Background technique [0002] At present, the application of new energy vehicles in the market is becoming more and more extensive, and has become the main development direction of the automobile industry, and the safety of electric vehicles has received more and more attention. Now in most new energy vehicles, after the key signal is turned off, the power management module, which is the core of the power supply system, has no power supply, and it is impossible to conduct a comprehensive safety and reliability evaluation of the power management module after the key signal is turned off Just can't make early warning message prompt and guarantee the safety when running next time. Contents of the invention [0003] The present invention a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L1/00B60L11/18H02J7/00
CPCB60L1/00B60L58/10H02J7/0014Y02T10/70
Inventor 王亚斌蒋林林严跃
Owner CHAOWEI POWER CO LTD
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