Charging wake-up circuit of battery management system

一种电池管理系统、唤醒电路的技术，应用在电池电路装置、电动汽车充电技术、电池等方向，能够解决低功耗、电动汽车无法正常上电、手动开启等问题，达到防止过放的效果

Inactive Publication Date: 2016-04-20
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the electric vehicle is in a stopped state, the battery management system (Battery Management System, BMS) needs to be in a power-off or low power consumption state, otherwise it will cause the on-board lead-acid battery powering the BMS to continue to discharge to an over-discharge state, which will not only affect the on-board The lead-acid battery will cause damage, and it will also make the electric car unable to power on normally next time
When the BMS is in the power-off state, if the power lithium battery pack is charged at this time, the BMS needs to be turned on manually, causing inconvenience

Method used

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  • Charging wake-up circuit of battery management system

Examples

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Embodiment Construction

[0011] Such as figure 1 As shown, a battery management system charging wake-up circuit includes a charging gun connection circuit 1, a comparator circuit 2 and a DC wake-up circuit 3. The charging gun connection circuit 1 includes filter capacitors C1, C2, TVS diode D1, Resistor R1, current limiting resistor R2, the comparator circuit 2 includes a comparator U1, a transistor U2, resistors R3, R4, R5, R6, and the DC wake-up circuit 3 includes an anti-reverse connection diode D2, a grounding resistor R7, current limiting resistor R8, filter capacitor C3, Zener diode D3, DC power supply U3, and the charging gun connection end Charger are respectively connected to one end of the filter capacitor C1, the negative pole of the TVS diode D1, one end of the resistor R1 and the current limiting One end of resistor R2, the other end of filter capacitor C1 and the anode of TVS diode D1 are grounded, the other end of resistor R1 is connected to +5V power supply, and the other end of curren...

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PUM

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Abstract

The invention discloses a charging wake-up circuit of a battery management system, the circuit comprises a charging gun connecting circuit, a comparator circuit and a DC wake-up circuit, when the BMS is closed, the charger state is monitored, if the charger charges a battery pack after the BMS is closed, the BMS is started by the charging wake-up circuit to continuously manage and monitor the battery pack. if the charger does not work, the BMS is in a low-power state to avoid the vehicle-mounted lead-acid storage battery discharging to the over discharge state.

Description

technical field [0001] The invention relates to the technical field of battery management systems, in particular to a charging wake-up circuit for the battery management system. Background technique [0002] When the electric vehicle is in a stopped state, the battery management system (Battery Management System, BMS) needs to be in a power-off or low power consumption state, otherwise it will cause the on-board lead-acid battery powering the BMS to continue to discharge to an over-discharge state, which will not only affect the on-board The lead-acid battery will cause damage, and it will also make the electric car unable to power on normally next time. When the BMS is in a power-off state, if the power lithium battery pack is charged at this time, the BMS needs to be turned on manually, causing inconvenience. Therefore, the best situation is that the BMS is in a low power consumption state. When the lithium battery pack needs to be charged, the charger will automatically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0068H01M10/482H01M10/425H01M2220/20H02J7/00B60L53/14B60L53/16B60L58/10Y02T10/70Y02T10/92Y02T10/7072Y02T90/14Y02E60/10B60L3/0046
Inventor 刘新天何耀曾国建郑昕昕
Owner HEFEI UNIV OF TECH
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