Abstract: A device communication method includes: establishing, by an electric device, a communication connection with a charging device; and performing, by the electric device, a function negotiation with the charging device through the communication connection. A service function of the function negotiation includes a charging and discharging function and/or a discharging function.

Abstract: The present application provides a charging policy setting method and apparatus, relating to the field of batteries. The method includes, obtaining a plurality of different core working parameters upon charging of a target core under a target charging condition at a target charging rate corresponding to the target charging condition; determining a maximum charging rate corresponding to each charging duration under the target charging condition according to the plurality of different core working parameters; and setting a charging policy under the target charging condition according to each charging duration under the target charging condition and the maximum charging rate corresponding to each charging duration. Thus, when the target core is charged at the set charging policy for each charging duration under the target charging condition, the target core is charged at the maximum charging rate corresponding to the charging duration, ensuring a fast charging speed and a high charging efficiency.

Abstract: Provided are a direct current resistance (DCR) detection method for batteries, a system, a device, and a storage medium. Multiple discharging current pulses are applied during the constant current charging process of a battery to form a negative pulse charging mode. The discharging current can be added during the charging process to quickly remove the polarization effect of a battery cell generated during the charging process, thereby improving the charging acceptance capacity of the battery cell, shortening the charging time and increasing the charging efficiency. At the same time, a first battery voltage is obtained during the discharging current pulse time period, and a second battery voltage is obtained during the constant current charging time period after the discharging current pulse, thereby obtaining a DCR value of the battery during actual charging and use. The DCR of the battery cell can be detected simultaneously in the negative pulse charging mode.

Abstract: This application provides a method and device for detecting charging abnormality, and a storage medium. In this application, a first sampling moment corresponding to a first minimum voltage in n sampled voltages is determined based on n consecutive sampled voltages of a first cell from an end moment of an ith charging phase to an end moment of an (i+1)th charging phase in a kth charging process. A second sampling moment corresponding to a second minimum voltage in any one of the first (k?1)th charging processes can be determined in the same way. Then abnormality of the kth charging process is determined.

Abstract: Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.

Abstract: This application provides a charging control method, a charging control device, an electronic device, and a storage medium. The charging control method includes: obtaining fastest-charge data, where a charging time in the fastest-charge data is less than or equal to a minimum charging time for a same state-of-charge (SOC) increment section in historical charging processes; and performing charging control on a battery based on the fastest-charge data. By obtaining the fastest-charge data and performing charging control on the battery based on the fastest-charge data, the charging control method according to this application can ensure that the charging time is close to or equal to the minimum charging time in historical charging processes, thereby effectively increasing the charging speed.

Abstract: Disclosed are a battery charging method, a controller, a battery management system, a battery, and an electric device, aimed to suppress lithium plating of the battery. The battery charging method includes: obtaining an electrical parameter of a battery; determining whether the electrical parameter of the battery reaches a preset threshold, where a value range of the preset threshold meets the following condition: a battery state of charge (SOC) corresponding to the preset threshold is 70% to 80%; suspending, when the electrical parameter of the battery reaches the preset threshold, charging of the battery and discharging the battery for a duration of t; and continuing to charge the battery when the discharge is completed.

Abstract: A method for charging a traction battery includes obtaining a battery parameter of the traction battery that includes a state of charge and/or an open-circuit voltage, and, during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter changing by a parameter gap value. The parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval. The first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than the battery parameter in the second parameter interval.

Abstract: Provided are a method for charging a traction battery and a battery management system. The method for charging the traction battery is applied to a battery management system, where the method includes: obtaining an SOH of the traction battery; in a charging process of the traction battery, obtaining an SOC of the traction battery; determining an SOC interval value corresponding to discharging or stopping being charged of the traction battery based on the SOH of the traction battery; and when the SOC of the traction battery changes by the SOC interval value, controlling the traction battery to discharge or stop being charged. Through the technical solution, in the charging process of the traction battery, the discharging or the stopping being charged of the traction battery can be controlled to reduce the risk of lithium precipitation in the traction battery and improve the safety performance of the traction battery.

Abstract: Provided are a method for charging a traction battery and a battery management system, which can improve the performance of a traction battery. The method for charging the traction battery is applied to a battery management system BMS of the traction battery, where the method includes: in a charging process of the traction battery, obtaining a state parameter of the traction battery, where the state parameter includes at least one of the following parameters: a state of charge SOC, a state of health SOH, and a temperature; determining an SOC interval value and a discharging parameter corresponding to discharging of the traction battery based on the state parameter of the traction battery, where the discharging parameter includes at least one of the following parameters: a discharging time, a discharging current, and a discharging waveform.

Abstract: A method for charging a power battery includes determining a first charging current for the power battery, determining, according to a temperature of the power battery, whether to perform thermal management of the power battery, determining, in response to determining to perform the thermal management of the power battery, a thermal management current according to the first charging current and charging pile power, and sending the first charging current and the thermal management current to a charging pile. The first charging current is used for charging the power battery and the thermal management current is used for performing the thermal management of the power battery.

Abstract: Embodiments of the present application provide a method for charging a power battery and a battery management system. The method may be applied to a battery management system for the power battery, and the method may comprise acquiring a charging mode of the power battery; determining a negative electrode potential safety threshold for the power battery according to the charging mode of the power battery; acquiring a negative electrode potential of the power battery during a charging process for the power battery; and adjusting a charging current for the power battery based on the negative electrode potential of the power battery and the negative electrode potential safety threshold.

Abstract: A method for charging a traction battery includes obtaining a battery parameter of the traction battery that includes a state of charge and/or an open-circuit voltage, and, during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter changing by a parameter gap value. The parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval. The first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than the battery parameter in the second parameter interval.

Abstract: A method for charging a traction battery includes obtaining an actual charging current of a traction battery during a charging process of the traction battery, and determining, based on a degree of the actual charging current exceeding a requested charging current, whether to control the traction battery to be discharged.

Abstract: A method for charging a traction battery applied to a battery management system (BMS) for the traction battery, includes obtaining a temperature and a battery parameter of the traction battery, determining a parameter threshold based on the temperature of the traction battery, and during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter of the traction battery being greater than or equal to the parameter threshold and the battery parameter of the traction battery changing by a parameter gap value. The battery parameter includes at least one of a state of charge (SOC) or an open-circuit voltage (OCV).

Abstract: Embodiments of the present application provide a method for charging a traction battery and a battery management system, where the method includes: obtaining a negative electrode potential of a traction battery during a charging process of the traction battery; and controlling the traction battery to be discharged when a difference between the negative electrode potential and a preset potential is less than or equal to a safety threshold. The method and the battery management system in the embodiments of the present application can improve the safety performance of the traction battery.

Abstract: Methods, systems, and devices for adjusting a scanning status are provided. In one example method, a mobile terminal can determine whether a target object is a preset target type. If so, a reference scan parameter is determined corresponding to the preset target type, and a real-time scan parameter is obtained that is used when the mobile terminal performs scanning around the target object. A determination is made as to whether the real-time scan parameter conforms to the reference scan parameter. If it does not, a prompt message used to prompt a user to adjust a scanning status corresponding to a current scan parameter is generated.

Abstract: Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.

Abstract: The embodiments of the present application provide a method for charging a battery, a battery management system, and a charge and discharge device. The method for charging the battery includes: acquiring, by a BMS, a first charge current and sending it to a charge and discharge device, thus making the charge and discharge device charge the battery based on the first charge current; if a first accumulated charge quantity of the battery is greater than or equal to a first accumulated charge quantity threshold value, acquiring, by the BMS, a first discharge current and sending it to the charge and discharge device, thus making the charge and discharge device control the battery to discharge based on the first discharge current; and if a first accumulated discharge quantity of the battery is greater than or equal to a first accumulated discharge quantity threshold value.

Abstract: The present application provides a charging policy setting method and apparatus, relating to the field of batteries. The method includes, obtaining a plurality of different core working parameters upon charging of a target core under a target charging condition at a target charging rate corresponding to the target charging condition; determining a maximum charging rate corresponding to each charging duration under the target charging condition according to the plurality of different core working parameters; and setting a charging policy under the target charging condition according to each charging duration under the target charging condition and the maximum charging rate corresponding to each charging duration. Thus, when the target core is charged at the set charging policy for each charging duration under the target charging condition, the target core is charged at the maximum charging rate corresponding to the charging duration, ensuring a fast charging speed and a high charging efficiency.