Lithium battery system

A technology of lithium batteries and lithium battery packs, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., and can solve the problems of battery packs being in danger of charging or discharging, battery packs in danger, protection failure, etc.

Active Publication Date: 2019-12-17
缙云县锐普电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Similarly, the existing hardware protection board has no temperature communication with the lithium battery charger and the load motor controller. The lithium battery charger and the load motor controller cannot constantly monitor the internal temperature of the battery pack. When the mos tube fails, the inside of the battery reaches the protection temperature. The protection board IC outputs the protection board signal to control the mos tube shutdown protection, but the shutdown protection cannot be performed when the mos tube fails
However, the battery pack is in a dangerous state when it is constantly charging or discharging under abnormal conditions.
As a result, the protection fails and brings danger to the battery pack.

Method used

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  • Lithium battery system

Examples

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Embodiment Construction

[0039] Such as figure 1 As shown, a lithium battery system 100 includes: a lithium battery pack BAT and a protection circuit suitable for the lithium battery pack BAT.

[0040] Specifically, the protection circuit includes: a current sampling resistor R, a charging mos tube Q1 , a discharging mos tube Q2 , a main controller 101 , a charging controller 102 , a load controller 103 and an analog circuit 104 .

[0041] Among them, the current sampling resistor R is used to collect the charging current or discharging current of the lithium battery pack BAT; the charging mos tube Q1 is used to turn on or off the charging circuit of the lithium battery pack BAT; the discharging mos tube Q2 is used to turn on or off The discharge circuit of the lithium battery pack BAT; the main controller 101 is used to output the signal for controlling the charge mos tube Q1 and the discharge mos tube Q2; the charge controller 102 is used to control the electrical connection between the lithium batt...

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PUM

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Abstract

The invention discloses a lithium electric system and a protection circuit suitable for the lithium electric system. Charging mos tube; Discharge mos tube; A master controller for outputting signals for controlling the charging mos tube and the discharging mos tube; A charging controller for controlling the electrical connection of the lithium battery pack and the charger thereof; A load controller for controlling the electrical connection of the lithium battery pack and the load thereof; An analog circuit for detecting a voltage of a gate electrode of the charging mos tube and a gate electrode of the discharging mos tube and a voltage of the current sampling resistor and transmitting a voltage signal to the load controller or the charging controller according to the detected voltage. Theinvention provides a lithium electric system and a protection circuit suitable for the lithium electric system, which can effectively perform power-off protection when a charging and discharging mos transistor fails through an analog circuit. The lithium electric system comprises a lithium-ion battery, a lithium-ion battery, a lithium-ion battery, and a lithium-ion battery.

Description

technical field [0001] The invention relates to a system and its circuit, in particular to a lithium battery system and a protection circuit suitable for the lithium battery system. Background technique [0002] The existing hardware protection board is connected in series with the circuit of the battery pack through the mos tube, and the voltage and current of the battery module are detected through the IC chip. When the IC chip detects that the battery pack is abnormal, the IC outputs a control signal to control the mos tube to turn off Thus cutting off the circuit and realizing protection. If the mos tube components fail, when the IC chip outputs the control signal to control the mos tube, the mos tube has no relevant action to shut down the circuit, so the protection function fails, the circuit is not cut off when the circuit is abnormal, and the battery pack is always abnormal. Charging or discharging is dangerous. As a result, the protection fails and brings danger t...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02H7/18H02J7/00
CPCH02H7/18H02J7/0026H02J7/0031
Inventor易冬冬
Owner缙云县锐普电子科技有限公司