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Pure electric rail locomotive power battery safety guarantee method

A technology for power batteries and rail locomotives, which is applied in the field of power battery safety assurance for pure electric rail locomotives, can solve problems such as runaway, unsafe tunnel operations, and insufficient consideration of battery safety, so as to avoid large current shocks, avoid thermal runaway, and improve locomotives. The effect of reliability

Inactive Publication Date: 2020-05-22
CRRC ZIYANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most pure electric vehicles have insufficient consideration for battery safety, and there is a great risk of loss of control, resulting in unsafe operations in tunnels

Method used

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  • Pure electric rail locomotive power battery safety guarantee method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the present invention provides a safety guarantee method for pure electric rail locomotive power batteries. This method mainly includes good insulation isolation between modules, double-branch physical isolation, reasonable setting of fuses, and total positive and negative physical isolation. Through these Measures to protect the power battery, prevent power battery short circuit, grounding, local out-of-control expansion and other faults, and ensure the safe application of the power battery. The following is the specific content of this method.

[0033] 1. Physical isolation between modules.

[0034] The battery modules are distributed in 6 independent battery compartments, forming 6 battery sub-modules. The voltage of a single battery sub-module does not exceed 23V, and the power does not exceed 5.16kWh. The distance between the modules is 9mm, and they are connected by soft copper bars. A high-strength insulating board is used in the midd...

Embodiment 2

[0051] Preferably, the middle of each battery compartment is isolated by a steel plate, the bottom layer of the steel plate is coated with insulating varnish, and the surface is pasted with a high-strength insulating plate to maximize energy division and improve safety.

Embodiment 3

[0053] Preferably, an insulating plate is used in the positive high-voltage box to physically isolate the total positive output of the A branch and the total positive output of the B branch; The total negative output is physically isolated.

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Abstract

The invention relates to the technical field of rail locomotives. The invention discloses a pure electric rail locomotive power battery safety guarantee method. The guarantee method comprises the following steps: setting good physical insulation isolation and double-branch physical isolation between battery modules, reasonably setting fuses, carrying out total positive and total negative physicalisolation, and adopting safe system power-on and power-off strategies. According to the method, through the measures, the power batteries are protected, faults such as short circuit, grounding and local out-of-control expansion of the power batteries are prevented, and the safe application of the power batteries is ensured.

Description

technical field [0001] The invention relates to the technical field of rail locomotives, in particular to a safety guarantee method for power batteries of pure electric rail locomotives. Background technique [0002] Pure electric rail locomotives have become a hot technology due to their low noise, zero emissions, and obvious energy-saving effects. Most pure electric vehicles have insufficient consideration for battery safety, and there is a great risk of loss of control, resulting in unsafe operations in tunnels. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the above existing problems, a method for ensuring the safety of the power battery of a pure electric rail vehicle is provided, and various measures are adopted to ensure the safety of the power battery system. [0004] The technical scheme adopted by the present invention is as follows: a method for ensuring the safety of the power battery system of a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L58/18
CPCB60L3/0046B60L2240/54B60L58/18Y02T10/70
Inventor 李茹华隆孝军刘耕杨波刘九思高晓芳
Owner CRRC ZIYANG CO LTD
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