Becker, Eberhard

A wireless power supply system (100, 200) is provided. The wireless power supply system (100, 200) includes a power coil circuit (110, 210), a relay coil circuit (120, 220_1, 220_2) and a receiving coil circuit (130, 230_1, 230_2). The power coil circuit (110, 210) receives a main power (PM) and sends the wireless power (WPM) according to the main power (PM). The relay coil circuit (120, 220_1, 220_2) receives the wireless power (WPM) and sends a relay power (PRL, PRL1, PRL2) according to the wireless power (WPM). The receiving coil circuit (130, 230_1, 230_2) receives the wireless power (WPM) and the relay power (PRL, PRL1, PRL2), and converts the wireless power (WPM) and the relay power (PRL, PRL1, PRL2) into a receiving power (PS, PS1, PS2).

Disclosed are a lower casing and a battery pack. The lower casing includes: a base plate (1); a cold plate (2) provided with a stamped portion (201) and a peripheral connecting portion (202), the stamped portion is recessed in a direction away from the base plate, and encloses to form a heat-exchange channel (203) together with the base plate, the peripheral connecting portion surrounds the stamped portion, and the peripheral connecting portion is welded to the base plate; and a first port (3) and a second port (4), the first port and the second port are both fixedly connected to the base plate, and one of the first port and the second port is in communication with an inlet end of the heat-exchange channel, and the other of the first port and the second port is in communication with an outlet end of the heat-exchange channel.

A display device and a driving method thereof are provided. The display device includes a pixel array (110) and a data driver circuit (130). The data driver circuit is coupled to pixel data lines in the pixel array. The data driver circuit includes a data driver chip (210) and a data multiplexer (220). The data multiplexer includes multiplexer circuits (221-i). Each multiplexer circuit includes a first transistor (T1, T4), a bootstrap capacitor (Cbsti), a diode (T2, T5), and a second transistor (T3, T6). The first transistor is coupled to one pixel data line (Data_IN_Di) and one chip data line (DATA_IC_Di). The bootstrap capacitor is coupled between a second terminal and the control terminal of the first transistor. The diode is coupled between the control terminal of the first transistor and a first control line. The data multiplexer may be combined with gate bootstrap circuits or pixel voltage bootstrap circuits to form a system-level low-voltage driving solution.

Provided is a trench power device, which includes a substrate (100), an epitaxial layer (102), a trench gate structure (104, 200, 300, 400, 500), a drain layer (106), and a source region (108). The epitaxial layer (102) having a trench (112) is formed on a first surface (100a) of the substrate (100). The trench gate structure (104, 200, 300, 400, 500) is located in the trench (112). The drain layer (106) is located on a second surface (100b) of the substrate (100). The source region (108) is formed in the epitaxial layer (102) on both sides of the trench gate structure (104, 200, 300, 400, 500). The trench gate structure (104, 200, 300, 400, 500) includes a gate (114, 204, 304, 404) formed in the trench (112), a gate oxide layer (116) and a bottom dielectric layer (118, 202, 302, 402).

A liquid heating device (1a) includes: a container (3) having a space inside; a plate-shaped base part (121) including a first portion (121a) in the space, and a second portion (121b) at a periphery of the first portion and exposed outside the container; a heating element (23a) on a first side of the first portion; a terminal (23b1) on the first side of the second portion; a connection part (23b2) on the first side of the first portion and the second portion, and electrically connected to the heating element and the terminal; a protection part (24) on the first side of the first portion and the second portion, covering the heating element and the connection part, and exposing the terminal; and a sealing part (4) between the container and the second portion, and provided at an end portion on an upper side in a gravity direction of the container.

The invention provides a sulfide solid electrolyte and a preparation method and an application thereof. A molecular formula of the sulfide solid electrolyte is Li_aP_1-bM_bS_cO_dX_e; wherein: 5<a<10; 0<b<1, 3<c<6, 0<d<2.5, 4<c+d<6, 0<e<2; M is selected from one or a plurality of Al, Ga, In, Ti, Sc, As, Sb, Bi, V, Nb, Ca, Mg, Sr, Ba, Zn, Cr, Sn, or Pb, and X is selected from one or a plurality of Cl, Br, or I. In an X-ray diffraction pattern obtained by CuKα radiation of a sulfide solid electrolyte powder, no diffraction peaks appear in ranges of 27° to 27.3°, 29° to 29.5°, and 35° to 35.2°. The invention provides a sulfide solid electrolyte and a preparation method and an application thereof that may obtain a high-purity doped sulfide solid electrolyte, suppress the formation of impurity phases, and improve the energy efficiency and cycle performance of the lithium-ion battery.

Disclosed are a separator (100) and an electrochemical device, specifically relating to the battery technology field. The separator (100) includes a porous base film (101), a heat-resistant layer (102) and an adhesive layer (103), wherein the heat-resistant layer (102) is disposed on at least one surface of the porous base film (101). The adhesive layer (103) is at least disposed on a surface of the heat-resistant layer (102) opposite to a surface in contact with the porous base film (101). An effective adhesion degree R-value of the separator (100) on a side where the heat-resistant layer (102) is provided is 40%-80%, and a difference between a maximum value and a minimum value of the effective adhesion degree R-value is <30%; wherein the effective adhesion degree R-value indicates a ratio of an effective adhesion area to a theoretical adhesion area of the separator (100).

Provided are a separator (100) and an electrochemical device. The separator (100) includes a porous base film (101) and a heat resistant layer (102). The heat resistant layer (102) is disposed on at least one surface of the porous base film (101), and includes inorganic particles and an adhesive agent. A surface static friction coefficient of the heat resistant layer (102) is ≤0.8, and a bulk density A of the heat resistant layer (102) satisfies: A=(0.4 to 0.5)×ρ. A heat resistant layer (102) with dense stacking and flat surface is obtained by controlling the static friction coefficient and bulk density of the heat resistant layer (102), which may increase an effective contact area between the adhesive particles in the heat resistant layer (102) and the electrode sheet, thereby increasing the adhesive force between the separator (100) as a whole and the electrode sheet.

An electrode sheet (100) includes a current collector (10) including a current collector body (12) and a tab (14) extending from the current collector body (12) along a first direction (d); an active material layer (20) disposed on at least one side of the current collector (10) in a thickness direction; and a reinforcement rib (30). The tab (14) has a tab bare foil region (40) where the active material layer (20) is not disposed. In the first direction (d), the reinforcement rib (30) continuously extends from the tab bare foil region (40) to a surface of the active material layer (20). The disclosure provides an electrode sheet (100) and a secondary battery (1300) to at least achieve avoiding tab folding.

An electrode sheet (100, 100A, 100B), a secondary battery (500), and an electronic device (1000) are provided. The electrode sheet (100, 100A, 100B) includes: an electrode sheet body (160); and an electrode tab (150, 150') extending from the electrode sheet body (160) in a first direction (D1), where a stiffener (190) is disposed on a surface of the electrode tab (150, 150'), where the stiffener (190) at least includes a first portion (192) and a second portion (194), the first portion (192) and the second portion (194) are connected through a bending part (196). An angle formed by the first portion (192) and the second portion (194) is a, 28°≤a≤45°.