Lithium battery pack charger of wind power pitch system

A technology for lithium battery packs and pitch control systems, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as difficult large-scale promotion, high cost, unstable charging performance of chargers, etc., and meet good reliability requirements , long-lasting charging power and stable performance

Inactive Publication Date: 2012-12-19
SUZHOU NENGJIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the wind power pitch system, the charging performance of the existing charger is unstable and the cost is high. It is obviously difficult to promote it on a large scale in today's wind power industry when the cost is generally reduced.

Method used

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  • Lithium battery pack charger of wind power pitch system
  • Lithium battery pack charger of wind power pitch system
  • Lithium battery pack charger of wind power pitch system

Examples

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Embodiment Construction

[0016] Lithium battery pack chargers for wind power pitch systems, such as Figure 4 As shown, the lithium battery pack charger includes a switching power supply circuit 221, a constant current and voltage limiting circuit 222 connected in parallel with the switching power supply circuit 221, a control unit connected in parallel with the constant current and voltage limiting circuit 222, and a control unit connected in parallel with the switching power supply circuit 221. The sampling protection circuit 223 is connected in parallel with the constant current and voltage limiting circuit 222, and the sampling protection circuit 223 is connected in series with the control unit.

[0017] Such as Figure 5 As shown, the switching power supply of the switching power supply circuit is composed of a switching power supply of a PWM chip 2212 with a pulse width modulation port, a charging fault restart switch 2210 , and a soft start buffer circuit 2211 . The pulse width modulation port...

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PUM

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Abstract

The invention discloses a lithium battery pack charger of a wind power pitch system. The lithium battery pack charger comprises a switch power circuit, a constant current voltage-limiting circuit connected with the switch power source circuit in parallel, a control unit connected with the constant current voltage-limiting circuit in parallel, and a sampling protective circuit connected with the constant current voltage-limiting circuit in parallel, wherein the sampling protective circuit is connected with the control unit in series. The lithium battery pack charger is stable in performance and durable in charging property, and can better satisfy demands that a wind power pitch backup power source is charged and discharged frequently and has a high reliability requirement.

Description

technical field [0001] The invention relates to a charger, in particular to a lithium battery charger for a wind power pitch system, and belongs to the technical field of wind power generation equipment. Background technique [0002] As non-renewable energy is facing the dilemma of depletion worldwide, in order to meet the needs of industrial production and human life, people's attention and utilization of renewable energy such as solar energy, wind power, and hydropower have been increasing day by day. Among them, wind power generation is a relatively mature new energy development technology that has been widely popularized and applied. [0003] In the wind power generation system, in order to ensure that the pitch system can retract the pitch in the event of a fan system failure or a power outage in the grid, and that the pitch system can maintain normal operation when the grid voltage fluctuates instantaneously, the pitch system must have its own backup power supply. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/10H02J7/14
Inventor 尤林森傅建民
Owner SUZHOU NENGJIAN ELECTRIC
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