High-integration-level multifunctional high-voltage distribution box for forklift

Abstract

The invention relates to a high-integration-level multifunctional high-voltage distribution box for forklift, which comprises a lithium battery interface, the lithium battery interface is connected with a whole vehicle interface through a bus, and a lithium battery main contactor is arranged at the front end of the bus; the bus is provided with a fuel cell branch connected with a fuel cell interface and a plurality of power device branches used for connecting power devices, the tail end of each power device branch is provided with a high-voltage connector, and the bus is provided with a power acquisition module used for detecting voltage and current. A lithium battery interface and a fuel battery interface are designed, in the system starting stage, a lithium battery serves as a main energy source of the whole forklift system, and a starting power source of a fuel battery is provided by the lithium battery; along with the gradual increase of the output power of the fuel cell, the main energy source is the fuel cell, and the fuel cell not only can provide power for the operation of the whole vehicle, but also can charge the lithium battery, so that the matching problem of the double-source hybrid power system is solved, the system integration degree is higher, and the flexibility is higher.

Description

technical field [0001] The invention relates to the technical field of high-voltage distribution box design, in particular to a highly integrated multifunctional high-voltage distribution box for forklifts. Background technique [0002] The high-voltage distribution box electrically connects the high-voltage components through the busbar and wiring harness, and provides functions such as charge and discharge control, power-on control of high-voltage components, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control, etc. for the high-voltage system, and protects and monitors the operation of the high-voltage system. a device. [0003] The schematic diagram of the high-voltage distribution box used by the traditional fuel cell engine is as follows: figure 1 As shown, it generally includes three parts: fuse, contactor and high voltage connector. The main functions mainly include over-current, overload protection, current distribution, power...

AI Technical Summary

Problems solved by technology

[0004]The existing technical solution has a single function, cannot match the dual-source system, cannot make full use of the heater function, and cannot monitor the voltage and current functions of each circuit

With the upgrading of fuel cell engines, this principle is no longer suitable for daily use, especially on fuel cell forklifts, which pales in comparison

[0005]Because most of the fuel cell forklifts in the current market are rebuilt from pure electric forklifts or original lead-acid battery forklifts, the vehicle and the battery system have no communication function. The power system cannot know the running status and power demand of the vehicle in a timely and effective manner; the power system has no communication with the vehicle, and the power system cannot monitor the driving intention of the vehicle driver

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