Charging control circuit of low voltage power supply to high voltage battery pack based on adjustable battery pack series structure and control method thereof

A low-voltage power supply and charging control technology, which is applied in battery circuit devices, safety/protection battery circuits, charge equalization circuits, etc., can solve the problems of unsatisfactory practical application effects, high application costs, complex circuits, etc., and achieve the best energy storage characteristics Excellent, simple control, simple circuit effect

Pending Publication Date: 2018-10-12
李勇
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for better utilizing space inside an electric vehicle's battery system without compromising its performance capabilities. It achieves this through regulating the flow of electrical currents within individual cells connected together. By doing things like actively adding more lithium ion into one cell compared to another helps improve their overall capacity while reducing weight. Additionally, when multiple small units start up simultaneously they work well but may have different voltages due to differences between them. To ensure proper functioning, all these components use similar levels of conductivity across the entire module. Overall, this innovation improves efficiency and reduces costs associated with recharged batteries used in vehicles.

Problems solved by technology

This patents describes different technical solutions aimed at improving the design and functionality of Lithium ion (Li) power systems by optimizing their individual components' properties while also reducing complexity and expenses associated with each component. These improvements help optimize both the life cycle of Li secondary batteries and ensure they work properly during operation under various conditions.

Method used

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  • Charging control circuit of low voltage power supply to high voltage battery pack based on adjustable battery pack series structure and control method thereof
  • Charging control circuit of low voltage power supply to high voltage battery pack based on adjustable battery pack series structure and control method thereof

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Embodiment Construction

[0026] The technical solution adopted in the present invention is to change the existing direct combination of single cells (or single cell groups) in series to form a battery pack, but to conduct on-off control through field effect tubes, relays or other switching devices, and to connect the single cells (or a single battery pack) is connected in series to the bus bar, and the battery pack voltage is obtained from the bus bar. The on-off control can also be carried out through field effect tubes, relays or other switching devices, and the busbars of this stage are connected, and the single cells (or single cell groups) are bypassed to form a series combination without charging current.

[0027] Each single battery (or single battery pack) in the battery pack is controlled on and off through field effect transistors, relays or other switching devices, so that the single battery (or single battery pack) can be connected in series to the bus, or the single The bulk battery (or sing

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Abstract

The invention discloses a charging control circuit of a low voltage power supply to a high voltage battery pack based on an adjustable battery pack series structure. The circuit design can perform charging control on each single battery (or single battery pack) via a breakover path for controlling a current, the multiple single batteries can be randomly and dynamically selected according to a voltage value of the low voltage power supply to be connected serially and added into a charging loop, and thus the low voltage power supply charges the high voltage battery pack. The active equalizationcapacity that has the same size with the charging current can be achieved for the single battery (or the single battery pack) that is not added into the serial bus. Via dynamic control, each single battery (or single battery pack) in the battery pack can be fully charged.

Description

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Claims

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Application Information

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Owner 李勇
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