Abstract:
An electrostatic discharge protection circuit (100) and an electronic product with the electrostatic discharge protection circuit (100). The electrostatic discharge protection circuit (100) comprises a clamping circuit (120) and at least one discharging circuit (110). The electronic product comprises an integrated circuit and the electrostatic discharge protection circuit (100). The clamping circuit (120) is used for providing a first voltage to the discharging circuit (110) to deactivate the discharging circuit (110) when the integrated circuit operates in a normal state, and for providing a second voltage to the discharging circuit ( 110) to active the discharging circuit ( 110) in case that electrostatic discharging occurs in the integrated circuit.
Abstract:
A source drive device and a driving method for LCD are provided. The source drive device comprises a grayscale producing circuit (10), a first switching circuit (T1), a source driver (20) and a logic control time sequence circuit (30). The source driver (20) comprises a source drive latch (2) and a plurality of branches, wherein each branch comprise a D/A converter (1) , a source driver cache (3), a second switching circuit (T2) and a third switching circuit (T3). The logic control time sequence circuit (30) is configured so that there is at least one charge-sharing time interval in which the first switching circuit (T1) is in OFF state while the second switching circuit (T2) and the third switching circuit (T3) are in ON state.
Abstract:
A battery heating circuit is provided, which comprises a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit and an energy superposition unit. The energy storage circuit is connected with the battery and comprises a current storage element L1 and a charge storage element C1. The damping element R1, the switch unit (1), the current storage element L1 and the charge storage element C1 are connected in series. The switching control module (100) is connected with the switch unit (1) and is designed to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit. The energy superposition unit is connected with the energy storage circuit and is designed to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off. The switching control module (100) is also designed to control the switch unit (1) to switch off after the first positive half cycle of current flows through the switch unit (1) after the switch (1) switches on and the voltage applied to the switch unit (1) at the time the switch unit (1) switches off is lower than the voltage rating of the switch unit (1).
Abstract:
A battery heating circuit is provide, which comprises a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, and a freewheeling circuit (20). The energy storage circuit is connected with the battery (E), and comprises a current storage element L1 and a charge storage element C1. The damping element R1, the switch unit (1), the current storage element L1, and the charge storage element C1 are connected in series. The switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so that the energy can flow to and fro between the battery (E) and the energy storage circuit when the switch unit (1) switches on, and the amplitude of the current flowing from the energy storage circuit to the battery (E) can be controlled. The freewheeling circuit (20) is configured to sustain the current flowing to the battery (E) when the current flows from the energy storage circuit to the battery (E) and after the switch unit (1) switches off. The battery heating circuit can avoid the safety problem caused by overcurrent in the heating circuit, so as to protect the battery efficiently.
Abstract:
A battery heating circuit is provided, comprising a first switch unit (11), a second switch unit (12), a third switch unit (13), a fourth switch unit (14), a switching control module (100), a damping element R1, a current storage element L1, and a charge storage element C1; the damping element R1 and current storage element L1 are designed to connect with the battery in series to form a branch; the first switch unit (11) and second switch unit (12) are connected in series with each other and then connected in parallel with the branch; the third switch unit (13) and fourth switch unit (14) are connected in series with each other and then connected in parallel with the branch; the charge storage element C1 is connected in series between the junction point of the first switch unit (11) and second switch unit (11) and the junction point of the third switch unit (13) and fourth switch unit (14), so that the first switch unit (11), charge storage element C1, and third switch unit (13) form a first branch designed to transfer energy from the battery to the charge storage element C1 and a second branch designed to transfer energy from the charge storage element C1 to the battery, and the fourth switch unit (14), charge storage element C1, and second switch unit (12) form a third branch designed to transfer energy from the battery to the charge storage element C1 and a fourth branch designed to transfer energy from the charge storage element C1 to the battery; the switching control module (100) is connected with the first switch unit (11), second switch unit (12), third switch unit (13), and fourth switch unit (14) respectively, and is designed to control ON/OFF of the first switch unit (11), second switch unit (12), third switch unit (13), and fourth switch unit (14), so as to control the energy flow between the battery and the charge storage element C1.
Abstract:
A battery heating circuit is provided, which comprises a switch unit (1), a switching control module (100), a damping element R1 and an energy storage circuit. The energy storage circuit is connected with the battery and comprises a current storage element L1 and a charge storage element C1. The damping element R1, the switch unit (1), the current storage element L1 and the charge storage element C1 are connected in series. The switching control module (100) is connected with the switch unit (1) and is designed to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit. The heating circuit can improve the charge/discharge performance of the battery, improve safety when the battery is heated and effectively protect the battery.
Abstract:
The present invention provides a battery heating circuit, wherein, the battery comprises a first battery (E1) and a second battery (E2), the heating circuit comprises a first switch unit (10), a second switch unit (20), a damping element R1, a damping element R2, a current storage element L1, a current storage element L2, a switching control module (100) and a charge storage element C, the first battery, damping element R1, current storage element L1, first switch unit (10) and charge storage element C are connected in series to form a first charging/discharging circuit; the second battery (E2), damping element R2, current storage element L2, charge storage element C and second switch unit (20) are connected in series to form a second charging/discharging circuit; when the charge storage element C is charged or discharges, the direction of charging/discharging current inthe second charging/discharging circuit is reverse to the direction of charging/discharging current inthe first charging/discharging circuit; the switching control module (100) is electrically connected with the first switch unit (10) and second switch unit (20), and is configured to control the electric energy flow between the first battery (E1), charge storage element C and second battery (E2). The battery heating circuit of the present invention can achieve high heating efficiency.
Abstract:
The present invention provides a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, a freewheeling circuit (20), and an energy superposition unit, the energy storage circuit is designed to connect with the battery to form a loop, and comprises a current storage element L1 and a charge storage element C1; the damping element R1, the switch unit (1), the current storage element L1, and the charge storage element C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is designed to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is designed to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off; the freewheeling circuit (20) is designed to form a serial loop with the battery and the current storage element L1 to sustain current flow in the battery after the switch unit (1) switches on and then switches off.
Abstract:
A battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, an energy limiting circuit, and an energy control unit for energy storage circuit, wherein, the energy storage circuit is connected with the battery, and comprises a current storage element L1 and a charge storage element C1; the damping element R1, switch unit (1), current storage element L1, and charge storage element C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is designed to control ON/OFF of the switch unit (1), so that the energy can flow to and fro between the battery and the energy storage circuit when the switch unit (1) switches on; the energy limiting circuit is designed to limit the magnitude of current flowing from the energy storage circuit to the battery; the energy control unit for energy storage circuit is connected with the energy storage circuit, and is designed to control the energy conversion in the energy storage circuit to a preset value after the switching control module (100) controls the switch unit (1) to switch on and then switch off. Using the heating circuit provided in the present invention, safety problem caused by overcurrent in the heating loop can be avoided, and therefore the battery can be protected effectively.
Abstract:
The present invention provides a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, and an energy limiting circuit, wherein, the energy storage circuit is connected with the battery, and comprises a current storage element L1 and a charge storage element C1; the damping element R1, the switch unit (1), the current storage element L1, and the charge storage element C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so that the energy can flow to and fro between the battery and the energy storage circuit when the switch unit (1) switches on; the energy limiting circuit is configured to limit the magnitude of current flowing from the energy storage circuit to the battery. The battery heating circuit provided in the present invention can avoid the safety problem caused by overcurrent in the heating circuit, so as to protect the battery efficiently.