Electric industrial vehicle braking energy feedback suppression method
A braking energy feedback, electric industrial vehicle technology, applied in electric vehicles, vehicle energy storage, electric braking systems, etc., can solve problems such as battery consumption system safety
Active Publication Date: 2021-12-17
河南嘉晨智能控制股份有限公司
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Problems solved by technology
[0009] Aiming at the deficiencies of the prior art, the present invention provides a braking energy feedback suppression method for electric industrial vehicles, which is used to solve the problems of on-demand generation of traction motor electromagnetic braking torque, electromagnetic braking energy consumption, and maintenance of battery system safety.
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[0052] According to a preferred embodiment, the present invention discloses a braking energy feedback suppression method for electric industrial vehicles, the method at least includes the following steps:
[0053] S1. Monitoring the braking energy of the electric industrial vehicle during driving and the remaining power of the power battery 400 to determine the transmission path of the braking energy, wherein the transmission path at least includes transmission to the power battery 400 and transmission to the oil pump power module 300;
[0054] S2. When the power battery 400 is in a rechargeable state, the braking energy can be transferred to the power battery 400 by converting it into electric energy to complete the charging of the power battery 400;
[0055] S3. When the power battery 400 is in a non-rechargeable state, the oil pump power module 300 can adjust the oil pump motor 310 in multiple ways through the oil pump controller 320 based on the urgency of excess braking en...
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The invention relates to an electric industrial vehicle braking energy feedback suppression method, which comprises the following steps that: S1, the braking energy of an electric industrial vehicle in a driving process and the residual electric quantity of a power battery are monitored so as to determine a transmission path of the braking energy, wherein the transmission path at least comprises transmission to the power battery and transmission to an oil pump power module; s2, under the condition that the power battery is in a chargeable state, the braking energy can be converted into electric energy in a mode of being preferentially transmitted to the power battery so as to complete charging of the power battery; and S3, under the condition that the power battery is in a non-charging state, the oil pump power module can carry out multi-mode adjustment on an oil pump motor through an oil pump controller based on the urgency of redundant braking energy consumption, wherein the adjusting mode at least comprises the step that the efficiency working point of the oil pump power module is changed by adjusting distribution of d-axis current and q-axis current of the oil pump motor, so that the oil pump motor consumes redundant braking energy in a mode adaptive to urgency.
Description
technical field [0001] The invention relates to the technical field of electric industrial vehicles, in particular to a braking energy feedback suppression method for electric industrial vehicles. Background technique [0002] Electric industrial vehicles have the advantages of high energy conversion efficiency, no pollution, low noise, weak vibration, etc., and are widely used in warehouses, medicine, tobacco and food industries. Electric industrial vehicles have the advantages of flexibility, efficiency, convenience and speed in cargo handling, stacking, short-distance transportation and other production operations. Due to the limitation of battery technology and capacity, the working time of electric industrial vehicles is greatly limited on one charge, and the use of braking energy recovery devices can reduce energy loss and prolong the working time of electric forklifts. [0003] The energy recovery device can convert the regenerative braking energy generated by the dr...
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IPC IPC(8): B60L7/10B60L58/12B60L15/20
CPCB60L7/10B60L58/12B60L15/20B60L2240/12B60L2240/26B60L2240/642Y02T10/70Y02T10/72
Inventor 任攀元姚欣李飞
Owner 河南嘉晨智能控制股份有限公司