Abstract: A lithium-ion battery cathode material and a method for preparing the same are disclosed. The lithium-ion battery cathode material includes a layered cathode material matrix and a defect layer. The layered cathode material matrix includes body layers and lithium layers, and the body layer includes a transition metal layer and a lithium layer. The defect layer includes atoms with a periodic arrangement different from that of atoms in the matrix or with content different from that of an element in the matrix. The defect layer is parallel to a 003 crystal plane of the layered cathode material matrix, and dimensions of the defect layer are 0.1 nm to 50 nm in at least one direction and 10 nm to 5000 nm in at least another direction.

Abstract: A method of in situ point spread function (PSF) retrieval is disclosed which includes encoding 3D location of molecules into PSFs, receiving molecule-generated images containing PSFs, segmenting the images into sub-PSFs, initializing template PSFs from a pupil function, determining a maximum normalized cross correlation (NCC) coefficient (NCCmax) between the sub- and template PSFs, associating each of the sub-PSFs with a template PSF based on the NCCmax and storing the sub-PSFs in associated bins, aligning and averaging the binned sub-PSFs, applying a phase retrieval algorithm to the averaged sub-PSFs to update the pupil function, regenerating the template PSFs, repeating until a difference between a new and a prior generation pupil function is below a predetermined threshold, generating in situ PSFs from the last pupil function, and applying a maximum likelihood estimation algorithm based on the in situ PSFs and the sub-PSFs to thereby generate lateral and axial locations of molecules.

Abstract: A method for testing crosstalk effect includes: obtaining a test signal and an interference input signal; inputting the test signal into a crosstalk effect test circuit obtained by simulation, so as to obtain an interfered signal; and when a rise time of the interfered signal or a fall time of the interfered signal is greater than a preset time threshold, determining that an excessive crosstalk effect exists in an integrated circuit under test. The crosstalk effect test circuit includes a first circuit, N second circuits, and N capacitors. The first circuit is configured to simulate an interfered first signal circuit in the integrated circuit under test; the N second circuits are configured to simulate N second signal circuits that interfere with the first signal circuit in the integrated circuit under test.

Abstract: A lithium metal electrode including ceramic particles is provided herein as well as electrochemical cells including the lithium metal electrode and methods of making the lithium metal electrode. The lithium metal electrode includes ceramic particles present as a ceramic layer adjacent to a first surface of the lithium metal electrode, embedded within the first surface, or a combination thereof. The ceramic particles include lithium lanthanum zirconium oxide (LLZO) particles, alumina particles, or a combination thereof.

Abstract: A simulation method and device, a power wire topology network, and a test circuit involve: a power wire topology network is generated according to a power wire layout, the power wire topology network including a plurality of first layer of metal wires arranged in a transverse direction, a plurality of second layer of metal wires arranged in a longitudinal direction, power child nodes and a parasitic element, the parasitic element being located between the two power child nodes; a minimum voltage of the power input node of each circuit nodule in a circuit corresponding to the power wire topology network is determined, the power input node being one of the power child nodes in each circuit module; and a time sequence simulation is performed according to the minimum voltage of the power input node of each circuit module and the post-simulation circuit network list of an integrated circuit.

Abstract: The present invention discloses a method for preparing a cyclopenta[c]chromene compound. A cationic rare earth compound [Ln(CH)3CN)9]3+[(AlCl4)3]3?.CH3CN is used as a catalyst, and p-methyl thiophenol is used as an accelerator for a catalytic reaction of a chalcone compound so as to prepare a product; and Ln, contained in the catalyst, represents a positive trivalent rare earth metal ion and is selected from one of La, Nd, Sm, Gd and Yb. According to the method, the starting materials are easy to obtain, the reaction process is simple, the catalyst usage is low, the catalyst is universally applicable to various substituted 2-hydroxy chalcones, and the obtained cyclopenta[c]chromene compound has not been reported. The catalyst synthesis method is simple and easy to obtain, and the yield of the target product is high.

Abstract: The video monitoring system collects a video data stream in real time; the device inspection system collects and uploads an image of each electrical device along a line; the voice communication system realizes a voice call between an inspection staff and a back-end monitoring staff; the environmental monitoring system monitors a temperature, a humidity, and a water intake in the traction substation and each electrical device; the fire alarm system monitors a fire in the traction substation; the sulfur hexafluoride gas monitoring system monitors a sulfur hexafluoride gas leakage in an electrical device; the security prevention system collects alarm information; the power lighting monitoring system collects operation information of a power lighting device; the power monitoring system monitors an input current and voltage and an output current and voltage of the traction substation in real time. The information is transmitted to the railroad dispatching center.

Abstract: A vehicle power system includes a traction battery, an electric machine configured to receive power from the traction battery, switching circuitry connected between the traction battery and electric machine, and including pairs of switches connected in parallel, and a capacitor connected with and between the pairs such that the capacitor shares a common terminal with each of the switches of the pairs, and a controller configured to responsive to a temperature of the traction battery being less than a first threshold, activate the switches of each of the pairs in complementary fashion at a switching frequency corresponding to a resonant frequency defined by a capacitance of the capacitor and an inductance of the traction battery to cause AC current to circulate between the traction battery and switching circuitry to generate heat within the traction battery, and responsive to the temperature exceeding a second threshold, deactivate the switches.

Abstract: A battery includes an unpackaged cell and a packaging film, where an edge of the unpackaged cell includes at least one first open space. The first open space runs through a thickness direction of the unpackaged cell. No unpackaged cell exists in the first open space. The packaging film encloses an enclosed space that accommodates the unpackaged cell. The packaging film forms a first sealing part in the first open space. The first sealing part does not cover the unpackaged cell. The first sealing part encloses a second open space with a packaging film on a sidewall of the first open space. The first open space partly overlaps the second open space.

Abstract: Embodiments of the present invention provide a lithium secondary battery electrolyte including a lithium salt, an organic solvent, and a flame retardant, and the flame retardant includes (pentafluoro) cyclotriphosphazene substituted by an electron donating group and (pentafluoro) cyclotriphosphazene substituted by an electron withdrawing group. Both two flame retardants: the (pentafluoro) cyclotriphosphazene substituted by the electron donating group and the (pentafluoro) cyclotriphosphazene substituted by the electron withdrawing group are added to the lithium secondary battery electrolyte, so that a battery has both high safety performance and good electrochemical performance. The embodiments of the present invention further provide a preparation method for the lithium secondary battery electrolyte and a lithium secondary battery including the lithium secondary battery electrolyte.

Abstract: A separator includes a porous polymeric separator having an anode side and a cathode side, a cathode-compatible material applied to the cathode side, wherein the cathode-compatible material comprises a polymeric binder and one or more of lithium aluminum titanium phosphate (LATP) particles, lithium lanthanum titanate (LLTO) particles, lithium aluminum germanium phosphate (LAGP) particles, and lithium superionic conductor (LISICON) particles, and an anode-compatible material applied to the anode side, wherein the anode-compatible material comprises lithium lanthanum zirconium oxide (LLZO) particles and a polymeric binder. The polymeric binder of the cathode-compatible material can be polyvinylidene fluoride and the polymeric binder of the anode-compatible material can be polyvinylidene. The polymeric binder of the cathode-compatible material the anode-compatible material can be the polymeric separator.

Abstract: A method for monitoring a data chain comprises the steps of analyzing a source code to generate an abstract syntax tree, traversing the abstract syntax tree to obtain key nodes, and obtaining a data flow dependency relationship. A data chain is formed and graphically presented according to the data flow dependency relationship. The method further utilizes an interceptor to configure intercept points and key indicators at application programming interfaces of the source code, where the key indicators are graphically presented. An apparatus employing the method and a computer-readable storage medium storing the method is also disclosed.

Abstract: An automotive power converter may be controlled by detecting a magnitude of current output by a phase leg of the automotive power converter, selecting a mutual off time for switches of the phase leg according to the magnitude, and generating pulse width modulation signals for the switches having the mutual off time to operate the switches to transfer power between a traction battery and electric machine.

Abstract: A vehicle power system includes a traction battery, an electric machine configured to receive power from the traction battery, switching circuitry connected between the traction battery and electric machine, and including pairs of switches connected in parallel, and a capacitor connected with and between the pairs such that the capacitor shares a common terminal with each of the switches of the pairs, and a controller configured to responsive to a temperature of the traction battery being less than a first threshold, activate the switches of each of the pairs in complementary fashion at a switching frequency corresponding to a resonant frequency defined by a capacitance of the capacitor and an inductance of the traction battery to cause AC current to circulate between the traction battery and switching circuitry to generate heat within the traction battery, and responsive to the temperature exceeding a second threshold, deactivate the switches.

Abstract: A controller of a vehicle power system closes a pre-charge contactor and one of a pair of main contactors to electrically connect a battery and inverter such that current flows through a pre-charge resistor. The controller also opens the pair to electrically disconnect the battery and inverter, and closes a switch configured to complete a circuit such that charge acquired by a capacitor of the inverter is dissipated via the pre-charge resistor.

Abstract: A thermal insulation component according to various aspects of the present disclosure includes a matrix, a crosslinking precursor, and a crosslinking initiator. The matrix includes a thermal insulation material having a thermal conductivity of less than or equal to about 5 W/mK. The crosslinking precursor is embedded in the matrix. The crosslinking precursor includes at least one of an acrylate functional group or a methacrylate functional group. The crosslinking initiator is embedded in the matrix. The crosslinking initiator is configured to decompose to initiate crosslinking of the crosslinking precursor. In certain aspects, the present disclosure also provides an electronics assembly including an electronic component and a thermal insulation material in thermal communication with the electronic component. In certain aspects, the present disclosure also provides methods of manufacturing the thermal insulation component.

Abstract: The present invention discloses a cyclopenta[c]chromene compound and a preparation method thereof. A chalcone compound as a reactant, A cationic rare earth metal compound Ln(CH3CN)9]3+[(AlCl4)3]3?.CH3CN as a catalyst, and 2-naphthalenethiol as an accelerator, react in an organic solvent to prepare the cyclopenta[c]-chromene compound. Ln represents a positive trivalent rare earth metal ion, which is selected from the group consisting of La, Nd, Sm, Gd, and Yb. The starting materials are easy obtained, the reaction process is simple, and the yield of the target product is high, up to 85%.

Abstract: The present invention discloses a method for preparing a cyclopenta[c]chromene compound. A cationic rare earth compound [Ln(CH)3CN)9]3+[(AlCl4)3]3?.CH3CN is used as a catalyst, and p-methyl thiophenol is used as an accelerator for a catalytic reaction of a chalcone compound so as to prepare a product; and Ln, contained in the catalyst, represents a positive trivalent rare earth metal ion and is selected from one of La, Nd, Sm, Gd and Yb. According to the method, the starting materials are easy to obtain, the reaction process is simple, the catalyst usage is low, the catalyst is universally applicable to various substituted 2-hydroxy chalcones, and the obtained cyclopenta[c]chromene compound has not been reported. The catalyst synthesis method is simple and easy to obtain, and the yield of the target product is high.

Abstract: A powertrain for a vehicle includes an electric machine coupled with a first inverter, a traction battery and a second inverter. The traction battery is coupled between a neutral terminal of the electric machine and a negative terminal of the first inverter. The second inverter is coupled in parallel with the first inverter with respect to a direct current (DC) bus, and configured to drive a second electric machine.

Abstract: The present invention relates to the controllable degradation, filling-type complex bone implant of multivariant amino acid polymer-organic calcium/phosphorus salts, as well as to the preparative method thereof. The complex bone implant is consisted of multivariant amino acid polymers and medically acceptable organic calcium/phosphorus salts, while the content of organic calcium/phosphorus salts is 20-90% based on the total mass of composite material; the multivariant amino acid polymer is polymerized by ?-aminocaproic acid and at least two other amino acids, in which the molar content of ?-aminocaproic acid is at least 50% of the total molar quantity of amino acid polymers, while the amounts of other amino acids are at least 0.5% of the total molar quantity of amino acid polymers.