Charging control circuit, charging system, vehicle, and charging control method
A technology of charging control and control circuit, which is applied in the field of charging control circuit, vehicle and charging control, and can solve the problem of waste of electric energy by BMS
Active Publication Date: 2022-08-09
KUNSHAN BAOTRON NEW ENERGY TECH CO LTD
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[0003] The purpose of the embodiment of the present application is to provide a charging control circuit, a charging system, a vehicle and a charging control method, which can improve the problem of waste of electric energy by BMS
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[0052] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that the terms "first", "second" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.
[0053] In the operation process of using the charger to charge the battery module, the battery management system (Battery Management System, BMS) is used to manage and control the charging process. After that, the BMS cannot enter the sleep state. After that, the BMS will continue to consume the power of the battery module, which will affect the battery life of the battery module or cause the battery module to feed power after a long time. In addition, because the battery module and the battery management system are both in working state, when the power of the current battery module is reduced by the system se...
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The present application provides a charging control circuit, a charging system, a vehicle and a charging control method. The charging control circuit includes a port protection circuit, a PWM detection circuit and a wake-up control circuit. When the input terminals of the wake-up control circuit and the port protection circuit both receive the first input signal representing the charger during a power outage, the port protection circuit filters out the interference signal in the first input signal, and outputs the filtered signal to the PWM detection circuit. After the first input signal after the interference signal, the wake-up control circuit stops outputting the wake-up signal to the battery management system; when the PWM detection circuit receives the first input signal output by the port protection circuit, it outputs to the battery management system the first control indicating the wake-up failure signal, so that the battery management system enters the sleep state according to the first control signal when the battery management system does not receive the wake-up signal, which can prevent the battery management system from being unable to enter the sleep state after the charger is powered off, resulting in power waste.
Description
technical field [0001] The present application relates to the field of charging management, and in particular, to a charging control circuit, a charging system, a vehicle, and a charging control method. Background technique [0002] At present, new energy vehicles mainly use lithium batteries as the power source to provide power for the normal driving of new energy vehicles. The Battery Management System (BMS) is responsible for the charge and discharge management of the power battery. In terms of electric vehicle charging, there are currently corresponding standards (refer to GB / T18487.1) to regulate the charging of power batteries. In this standard, a CP (Control Pilot, control pilot) signal is defined to confirm the handshaking signal with the battery management system for the size of the slow charging current, and the electrical characteristics of the CP signal are also defined. Currently, during the charging operation, the BMS wastes power. For example, if the chargi...
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IPC IPC(8): B60L58/10B60L3/00B60L53/00H02J7/00
CPCB60L58/10B60L3/00B60L53/00H02J7/0036B60L2240/54Y02T90/14
Inventor 徐童辉
Owner KUNSHAN BAOTRON NEW ENERGY TECH CO LTD