Contactor box of pure electric rail locomotive

A technology for rail locomotives and contactors, applied in electric vehicles, motor vehicles, electrical devices, etc., can solve problems such as safety isolation, locomotive safety operation risks, and electrical failure, so as to prevent electrical failures and prevent electrical failures caused by short circuits Possibility and effect of improving reliability
CN110774899AActive Publication Date: 2020-02-11CRRC ZIYANG CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CRRC ZIYANG CO LTD
Publication Date
2020-02-11

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Abstract

The invention discloses a contactor box of a pure electric railway locomotive. The contactor box comprises a box body, wherein at least two circuit spaces independent to each other are arranged in thebox body; the circuit spaces are separated by an insulating isolation board; branch battery system circuits are arranged in the circuit spaces; and each of the branch battery system circuits is positioned in a positive electrode circuit or a negative electrode circuit. The contactor box of the pure electric railway locomotive achieves the purposes of realizing electrical safety isolation withoutmutual influence through the separate and independent installation of the positive electrode and negative electrode contactor boxes, functionally realizing the independent breaking control of the positive and negative electrode circuits of a battery system, and providing sufficient safety protection for the battery system in the event of faults.
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Description

technical field

[0001] The invention belongs to the technical field of new energy, and in particular relates to a contactor box of a pure electric rail vehicle. Background technique

[0002] At present, the contactor box on the power battery system of pure electric rail locomotives is mainly composed of contactors, fuses, maintenance switches, current sensors, battery management systems and other components, and is used to monitor, manage, and control the power distribution status of the power battery system. Control and protection are generally integrated with the power battery box. The traditional contactor box technical solution is only suitable for single-branch battery systems. It combines the positive and negative circuits of the battery system in a single contactor box. Since complete electrical safety isolation cannot be performed, the locomotive will , It is easy to cause electrical failure and bring risks to the safe operation of the locomotive.

[0003] In view ...

Claims

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