High power capacity auxiliary electricity supply power device

Abstract

The invention relates to a high power capacity auxiliary electricity supply power device, and belongs to the technical field of auxiliary power devices. The high power capacity auxiliary electricity supply power device comprises a power unit and auxiliary capacity electricity supply deices, wherein two 600F auxiliary high power capacity electricity supply devices are connected onto the power unit in parallel, the power unit is provided with a power unit housing, a power unit oil tank and a power unit electromotor are respectively arranged at two ends of the housing, a connection seat is arranged in the middle of the housing, an electromagnetic directional valve is arranged above the connection seat, an oil outlet and an oil return port are disposed on the obverse side of the connection seat, an oil filling port is arranged on the power unit oil tank, a wiring terminal is arranged on the end face of the power unit electromotor, the auxiliary capacity electricity supply devices are arranged below the power unit electromotor, and the auxiliary capacity electricity supply devices are connected with the power unit in parallel through electric wires. According to the high power capacity auxiliary electricity supply power device, an electricity supply mode of the power unit is changed, instantaneous current requirements are met when the power unit is started, service life of a vehicle storage battery is prolonged, over-current protection is set, and therefore the power unit is effectively prevented from being damaged by a large electric current.

Description

technical field [0001] The invention belongs to the technical field of auxiliary power devices, and its specific function is to use the 12V / 24V electric power of the vehicle battery and the generator as the energy source to provide hydraulic power for the modified parts of the vehicle. Background technique [0002] The power unit is an electric-driven hydraulic device commonly used in small and light modified vehicles. Its function is to use the direct current of the vehicle as the power to drive the hydraulic pump to provide high-pressure hydraulic oil as the driving force for the hydraulic components of the special mechanism. The current power unit uses the vehicle's own battery as the energy source, and the battery is charged by the on-board generator. This power supply method has the following disadvantages: [0003] The motor power of the power unit is generally between 0.8-2.2Kw, but because it adopts the same DC equal-voltage power supply as the vehicle electrical sy...

AI Technical Summary

Problems solved by technology

It is difficult for the electrical system of the vehicle to provide such a large instantaneous current

[0004] The on-board battery is a lead-acid maintenance-free battery. The energy density is low and it is difficult to support high-current discharge. Frequent high-current discharge will cause battery damage or a sharp shortening of battery life.

Even if the battery is not damaged, the voltage of the battery will drop rapidly and the battery will be in a state of power loss, making it difficult to start the vehicle after it is turned off and the on-board electrical appliances cannot work normally due to low voltage.

[0005] The power unit motor has no protection system, and the motor has no overcurrent protection during the power unit operation. When the hydraulic system works to the dead point, it only relies on the hydraulic pressure relief valve to control the hydraulic pressure, thereby indirectly limiting the maximum current of the power unit motor.

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