Lenovo (beijing) Limited

Beijing Lenovo Software Ltd.

Shuangcheng Zhao

Weizhi Lin

Xiaoren Cheng

Ling Yao

Yu Hu

Zhihu Wang

Bo Song

A battery includes a battery cell, an electronic circuit connected to the battery cell, and a conductive material layer connected to the electronic circuit. The conductive material is located outside the battery cell and separated from the battery cell by a distance.

Battery, battery management method, and battery control method

Aspects acquire at least one first battery state when a battery of the electronic device is in a first dormant state; acquire at least one second battery state of the battery in a second dormant state and the charge level or discharge capacity of the battery during the first dormant state and the second dormant state when it is confirmed that the battery enters the non-dormant state from the first dormant state, and enters the second dormant state from the non-dormant state; and calculate the actual full charge level of the battery on the basis of at least the first battery state, at least the second battery state and the charge level or discharge capacity. The technical problem that the calibration of battery capacity can only be conducted in a full charged state for the battery existing in the electronic device in prior art is solved by the above-mentioned technical solution provided in the present invention.

Aspects for determining charging capacity of a battery

A method includes detecting a present temperature value of a battery cell of a battery, determining whether the present temperature value is higher than a lowest threshold temperature value and lower than a highest threshold temperature value, detecting a present electric current value of the battery in association with a determination that the present temperature value is higher than the lowest threshold temperature value and lower than the highest threshold temperature value, determining whether the present electric current value is higher than a threshold current value corresponding to the present temperature value, and stopping a charge-discharge process of the battery cell in response to determining that the present electric current value is higher than the threshold current value.

Method and apparatus for controlling battery cell charging-discharging

Disclosed are charging control methods for a rechargeable battery and portable computers. The charging control method includes acquiring a control parameter for a charge current of the rechargeable battery; modifying, based on the control parameter, the charge current from a first charge current to a second charge current less than the first charge current; and charging the rechargeable battery with the second charge current. Compared with conventional methods of charging the battery always with the maximal charge current, the present disclosure can improve the battery's lifetime.

Charging control method for a rechargeable battery and portable computer

The present invention provides an electronic device, a power supply control chip and a power supply control method. The electronic device includes: at least one element (); a rechargeable battery (); an adapter socket (); a first processing circuit () having a first operation state and a second operation state; a power supply judgment parameter acquisition module () configured to acquire a power supply judgment parameter; and a control module () configured to control the first processing circuit to operate in the first or second operation state based on the power supply judgment parameter. In the first operation state, the first processing circuit () is configured to convert a first electrical signal output from a adapter into a second electrical signal and charge the rechargeable battery () with the second electrical signal. In the second operation state, the first processing circuit () is configured to convert a third electrical signal output from the rechargeable battery () into a fourth electrical signal and supply power to the at least one element () with the fourth electrical signal. With the electronic device, the power supply control chip and the power supply control method according to the present invention, utilization of the rechargeable battery () can be improved.

Electronic device, power supply control chip and power supply control method

A power adapter for a portable computer includes a pulse width modulation unit and an output shaping unit and further includes a first judgment module that judges whether the portable computer is in a first state according to state judging parameters, and compares an output voltage with a first preset voltage and a second preset voltage when judging that the portable computer is in the first state, and acquires a judging result, wherein the first preset voltage is greater than or equal to the second preset voltage. The power adapter can increase efficiency.

Control of a power adapter with energy storage elements based on output voltage thresholds

The present invention provides a battery management device and a portable computer, the battery management device is for managing the rechargeable battery provided in a portable computer, the portable computer is provided with a charge circuit for charging a battery, the battery management device comprises: a discharge circuit for discharge the battery; a acquiring module for acquire the mode determining parameter; a first determining module for judging whether the battery storage mode is entered according to the mode determining parameter; a first control module for controlling the charge circuit or the discharge circuit to control the amount of electrical charge of the battery so that the amount of electrical charge of the battery is lower than the second amount of electrical charge threshold in the battery storage mode; the performance of the battery when deposited with the amount of electrical charge lower than the second amount of electrical charge threshold is better than the performance when deposited with the amount of electrical charge higher than the second amount of electrical charge threshold. The present invention alleviates the attenuation of the amount of electrical charge capacity of the rechargeable battery of the portable computer.

Growing community of inventors

Beijing, China

Shuangcheng Zhao