An electronic device includes a display module including a first region exposed to an outside in first and second modes and a second region extending from the first region, where the second region is partially opposite to the first region in the first mode or is partially exposed in the second mode, the second region includes a curved region in the first mode and a flat region extending from the curved region and opposite to the first region, a supporting member disposed below the display module, a case which contains the display module and the supporting member, where the first and second modes are determined based on a sliding motion of the case, and a wireless charging coil which is contained in the case and shielded by the supporting member in the first mode, and does not overlap the supporting member in the second mode.

A charging circuit includes a first charging path and a second charging path. The first charging path and the second charging path are connected in parallel, and the first charging path and the second charging path are both used to receive a charging signal via a wired charging interface. The first charging path is connected to a first power end of a battery, and the second charging path is connected to a second power end of the battery. The first end of the battery is different from the second end of the battery.

A charging circuit includes a first charging path and a second charging path. The first charging path and the second charging path are connected in parallel, and the first charging path and the second charging path are both used to receive a charging signal via a wired charging interface. The first charging path is connected to a first power end of a battery, and the second charging path is connected to a second power end of the battery. The first end of the battery is different from the second end of the battery.

The present invention provides a power supply method and system for a hydrogen fuel cell stack, and a hydrogen powered motorcycle and a driving method and system thereof, the power supply method includes: a control chip detecting the operating states of the hydrogen fuel cell stack and the lithium battery pack; when the hydrogen fuel cell stack and the lithium battery pack are free of faults, obtaining the output voltage of the lithium battery pack; when the output voltage is lower than the charge-on threshold, the hydrogen fuel cell stack powering the lithium battery pack; when the output voltage is higher than the charge-stop threshold, disconnecting the circuit of the hydrogen fuel cell stack powering the lithium battery pack, when the output voltage is more than or equal to the charge-on threshold and less than or equal to the charge-stop threshold, the circuit of the hydrogen fuel cell stack remaining to power the lithium battery pack; and when the output voltage is higher than the charge-stop threshold, disconnecting the circuit oi the hydrogen fuel cell stack powering the lithium battery pack. The aforementioned technical solution uses hydrogen energy as the electrical energy powering the motorcycle as much as possible under the protection of the hydrogen fuel cell stack.

A method for charging a cell of an electric energy store includes setting the cell into a charging mode; determining a first and a second impedance characteristic, each representative of a complex alternating current impedance of the cell; determining a first and a second temperature characteristic on the basis of the impedance characteristics, each representative of a temperature of the cell; determining a deviation in the temperature characteristics; and reducing a charging current of the cell in the event that the deviation exceeds a specified temperature threshold value.

A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative electrode is an electrode in which lithium metal deposits during charging and the lithium metal dissolves during discharging, the separator includes a substrate, a first layer disposed on a first side of the substrate, and a second layer disposed on a second side of the substrate, the first layer includes particles of phosphate containing lithium, the second layer includes a polymer and/or inorganic particles other than the particles of the phosphate, and the polymer is at least one selected from the group consisting of aromatic polyamide, aromatic polyimide, and aromatic polyamide-imide.

A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative electrode is an electrode in which lithium metal deposits during charging and the lithium metal dissolves during discharging, the separator includes a substrate, a first layer disposed on a first side of the substrate, and a second layer disposed on a second side of the substrate, the first layer includes particles of phosphate containing lithium, the second layer includes a polymer and/or inorganic particles other than the particles of the phosphate, and the polymer is at least one selected from the group consisting of aromatic polyamide, aromatic polyimide, and aromatic polyamide-imide.

Disclosed is an electrode lead gripper for a pressure activation device, and, in particular, an electrode lead gripper for a pressure activation device in which a current electrode terminal is configured to be stacked and mounted onto an electrode terminal base separately from a voltage electrode terminal and thus improved in contact reliability and increased in contact area in terms of contact with an electrode lead of a pouch type battery cell, thereby having advantages of decreasing contact resistance, reducing the amount of heat generated during charging/discharging, and resulting in further enhancing a charging/discharging efficiency.

The present disclosure relates to the technical field of vehicles, and provides a vehicle and an energy conversion device and a control method therefor. The energy conversion device includes a motor controller, a bus capacitor, a first switch module, a motor, and a second switch module. By controlling the first switch module and the second switch module to be turned on/off, a motor driving circuit can be formed by a battery pack, the first switch module, the bus capacitor, the motor controller, and the motor, and a charging and discharging circuit can be formed by the battery pack, the second switch module, the motor, the motor controller, and the bus capacitor.

Provided is a control device for controlling a storage battery. The control device includes a communication unit and a control unit. The communication unit communicates with the storage battery in a wired or wireless manner. The control unit controls the communication unit to send a control signal, to the storage battery, that causes the storage battery to operate in a first mode or a second mode. The first mode is a mode in which the width of changes over time in power bought or sold by a power control system connected to the storage battery is controlled to stay within a prescribed range. The second mode is mode in which the width of changes over time in power charged to or discharged from the storage battery is controlled to stay within a prescribed range.