Charging and discharging protection circuit of lithium battery management system and lithium battery management system

A management system and protection circuit technology, applied in the field of power electronics, can solve the problems of unreasonable design, low safety and reliability, and reduce the charging times of lithium batteries, and achieve the effect of simple structure and low development cost

Pending Publication Date: 2020-05-12
SHANGHAI PYLON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conversely, in the state of over-discharge, the decomposition of the electrolyte causes the charge-discharge characteristics and durability of the lithium battery to deteriorate, reducing the number of times the lithium battery

Method used

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  • Charging and discharging protection circuit of lithium battery management system and lithium battery management system
  • Charging and discharging protection circuit of lithium battery management system and lithium battery management system
  • Charging and discharging protection circuit of lithium battery management system and lithium battery management system

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Example Embodiment

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0038] figure 1 A schematic structural diagram of a charging and discharging protection circuit of a lithium battery management system provided by an embodiment of the present invention. refer to figure 1 , a charging and discharging protection circuit of a lithium battery management system provided by an embodiment of the present invention includes: a first power supply circuit 10, a starting circuit 20, a DC / DC conversion circuit 30, a control circuit 40, and a current feedback circuit 50;

[0039] The first p...

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Abstract

The embodiment of the invention discloses a charging and discharging protection circuit of a lithium battery management system and the lithium battery management system. The charging and discharging protection circuit of the lithium battery management system comprises a first power supply circuit, a starting circuit, a DC/DC conversion circuit, a control circuit and a voltage feedback circuit; thefirst power supply circuit is used for converting an AC voltage into a DC voltage and outputting the DC voltage from the output end; the voltage feedback circuit is used for feeding back the collected output voltage of the DC/DC conversion circuit to the control circuit, and the control circuit is used for adjusting a drive control signal output to the input end of the DC/DC conversion circuit according to the output voltage of the DC/DC conversion circuit. According to the technical scheme provided by the embodiment of the invention, the charging protection of the lithium battery is realized, the circuit structure is simple, and the cost is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of power electronics, and in particular to a charging and discharging protection circuit of a lithium battery management system and the lithium battery management system. Background technique [0002] Due to the advantages of lithium batteries such as small size, high energy density, no memory effect, high cycle life, high voltage, and low self-discharge rate, more and more products such as mobile phones, cameras, electric vehicles, and Bluetooth devices begin to use lithium batteries as their main products. power supply. [0003] Due to the high energy density of lithium batteries, there are certain risks in the process of charging and discharging. When the lithium battery is in an overcharged state, the temperature of the lithium battery rises, causing the electrolyte inside the lithium battery to decompose and generate gas, which increases the internal pressure of the lithium batter...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/0036H02J7/0047Y02E60/10
Inventor 施璐姚斌李番军王红星
Owner SHANGHAI PYLON TECH CO LTD
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