Abstract: A self-moving mowing system includes: an actuating mechanism having a mowing assembly configured to achieve a mowing function and a moving assembly configured to achieve a moving function; an image acquisition module capable of acquiring a real-time image of a mowing area; a display module configured to display the real-time image or a simulated scene image generated according to the real-time image; a receiving module configured to receive an instruction input by a user; an obstacle generation module configured to generate, according to the instruction input by the user, a first virtual obstacle identifier so as to form a first fusion image; and a control module electrically connected or communicatively connected to a sending module, where the control module is configured to control the actuating mechanism to avoid the first virtual obstacle identifier in the first fusion image.

Abstract: Disclosed are a binder and a lithium-ion battery including the binder. The binder includes at least one polymer, and the polymer has a structure shown in Formula 1. The binder utilizes a composite structure in which a main chain is polyethylene glycol and both ends of a polymer chain include catechol, which respectively provide the binder with high ionic conductivity and high adhesion. A negative electrode plate including the binder features relatively has high ionic conductivity and peel strength. In addition, the binder in the present disclosure is used in a lithium-ion battery, and the lithium-ion battery has a higher cycle capacity retention rate, a lower cycle expansion rate, and higher rate performance than a lithium-ion battery using a conventional polymer binder.

Abstract: Disclosed is a lithium-ion battery, where ethylene sulfate, fluoroethylene carbonate, and a carboxylate ester organic solvent are introduced into a non-aqueous electrolyte solution, and a relationship between a negative electrode binder content X in a negative electrode plate and a DTD content A, an FEC content B, and a carboxylate ester organic solvent content Yin the non-aqueous electrolyte solution is further adjusted to meet: 10?A+B?21, 0.02?X/(A+B+Y)?0.2, and 0.02?X/Y?0.25, and a conductivity of an electrolyte solution at a low temperature and a migration rate of lithium ions may be improved, so that a negative surface may form a stable and low-impedance SEI interface, thereby improving low-temperature charging performance and high-rate discharging performance of a battery. Moreover, a cycling expansion rate of the lithium-ion battery may be reduced.

Abstract: Disclosed is a lithium-ion battery. The lithium-ion battery comprises a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte solution. The non-aqueous electrolyte solution at least comprises FEC and PP; the negative electrode comprises a binder; and the binder is a polymer having a side chain containing hydroxyl, and is a graft polymer that one or more of acrylic acid, acrylonitrile, acrylamide, acrylic acid ester, styrene, vinylimidazole, vinylpyridine, sodium p-styrenesulfonate and the like are graft-copolymerized on the hydroxyl. According to the lithium-ion battery of the present disclosure, a stable SEI interface can be formed on a surface of a silicon-based negative electrode, so that the lithium-ion battery prepared thereby has high energy density, long cycle life and low cycle expansion rate.

Abstract: Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.

Abstract: The present application provides a binder and a lithium-ion battery including the binder. The binder is rich in amino groups, has strong alkali resistance and is not easy to decompose. Besides, rich amino groups in the binder are prone to form hydrogen bonds, so that the binder more fully coats an active material and can enhance an acting force between the active material and a current collector, improve a peeling strength of an electrode piece, and significantly improve a cycling performance, expansion rate, and rate capability of lithium-ion batteries using the binder.

Abstract: The present application provides a boric acid derivative modified binder and a lithium-ion battery including the binder. Surfaces of emulsion particles of the binder are rich in boric acid groups (—B(OH)2). When the binder is applied to an electrode piece of the battery, the boric acid groups can be subjected to a dehydration condensation reaction with —OH in sodium carboxymethyl cellulose dispersant, or with —OH in a functional monomer during the drying process of the electrode piece, to form a three-dimensional network, increasing the bonding force and greatly improving the peeling strength of the electrode piece. The binder can also significantly improve the cycle performance of the lithium-ion battery, thereby prolonging the cycle life of the lithium-ion battery.

Abstract: Disclosed are a binder and a battery including the binder. The novel aqueous binder with self cross-linking performance, strong bonding performance, and good flexibility is obtained by copolymerizing a plurality of functional monomers. The binder has the characteristics of good processability and high solid content of the slurry when applied to a positive electrode; the positive electrode plate obtained by applying the slurry has high peeling force and good cyclic stability, and its rate capability is superior to that obtained by applying PVDF binder; and the binder is green and environmental friendly, and it is expected to replace PVDF in batteries and achieve large-scale application.

Abstract: Provided is a telescopic rail, comprising a first rail and a second rail slidably arranged relative to each other, two rotating wheels, a belt, a first and a second traction block. When the rail is put into use, loosen the first and the second fixing device to release the belt from the first and the second traction block, then slide the first and the second rail relative to each other till the total length of the rails is qualified for the installation requirement, then tighten the first and the second fixing device to grip the belt by the first and the second traction block, after that cut off the surplus of belt, thus the length of the telescopic rail could be adjusted on-site without preparatory measurements and customizations, which decreases the workload for measurements and improves the efficiency for installation.

Abstract: Disclosed are a negative electrode plate and a battery. A first negative active material layer is disposed at a bottom layer, and includes a first binder resistant to electrolyte swelling, has a better chemical corrosion resistance, and is not easy to age, so as to ensure long-term bonding, and reduce battery cell expansio. The negative electrode plate can maintain good mechanical strength and elongation at immersion of the electrolyte, so as to ensure that it is not separatedr. A second binder in a second negative active material layer away from the negative current collector uses a high swelling material, the high-swelling binder is in good affinity with the electrolyte, and the electrolyte infiltration speed is good, which facilitates lithium ion conduction. Furthermore, the high-swelling binder is bound to the separator well in a hot pressing process, so as to improve an interface bonding effect.

Abstract: Disclosed are a pre-lithiated silicon negative electrode material, a silicon negative electrode plate, a method for preparing the same, and a lithium-ion battery. The pre-lithiated silicon negative electrode material includes a silicon negative electrode material and a lithium-containing polymer compounded with the silicon negative electrode material. The lithium-containing polymer includes a polymer shown in the following formula 1, where x is 1 to 12, and R1 is I; or II, where y is 1 to 4; or III or IV. The use of the pre-lithiated silicon negative electrode material can improve performance, such as initial Coulombic efficiency, of a lithium-ion battery.

Abstract: The present invention discloses a high-boron cast steel material resisting high-temperature molten aluminum corrosion-abrasion and a preparation method thereof. The material includes the following compositions (wt.%): C: 0.1 to 1, B: 1.0 to 6.5, Cr: 7.5 to 25, Mo: 0.5 to 12.5, Si: 0.5 to 3.5, Al: 0.5 to 8.5, Mn: 0.2 to 1.2, S: less than 0.05, P: less than 0.05, and a balance of Fe. The method includes the following steps: annealing an obtained casting, and conducting quenching and tempering treatment to obtain the material.

Abstract: The present invention discloses a method for refining large-particle-size pure copper or copper alloy particles by high-energy ball milling, the method comprising the following steps: (1) using large-particle-size pure copper or copper alloy coarse particles as a raw material and cyclohexane or water as a process control agent, and crushing and refining the particles by high-energy ball milling to obtain small-particle-size copper or copper alloy powder; and (2) decreasing an oxygen content in the powder obtained in step (1) in a reducing atmosphere to obtain pure copper or copper alloy powder. In the present invention, by improving the overall process flow of the preparation method and the parameter conditions of each process step, the method greatly decreases energy consumption compared with existing copper powder preparation techniques. In addition, the method features a simple process and low production costs.

Abstract: Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.

Abstract: Provided is a telescopic rail, comprising a first rail and a second rail slidably arranged relative to each other, two rotating wheels, a belt, a first and a second traction block. When the rail is put into use, loosen the first and the second fixing device to release the belt from the first and the second traction block, then slide the first and the second rail relative to each other till the total length of the rails is qualified for the installation requirement, then tighten the first and the second fixing device to grip the belt by the first and the second traction block, after that cut off the surplus of belt, thus the length of the telescopic rail could be adjusted on-site without preparatory measurements and customizations, which decreases the workload for measurements and improves the efficiency for installation.

Abstract: The present invention belongs to the technical field of the preparation of alloy materials, and discloses a high strength and toughness alloy material, a method for preparing the alloy material by semi-solid sintering, and application thereof.

Abstract: The present invention belongs to the technical field of the preparation of alloy materials, and discloses a high strength and toughness alloy material, a method for preparing the alloy material by semi-solid sintering, and application thereof.

Abstract: Compounds of the formula I in the form of enantiomerically pure diastereomers or a mixture of diastereomers, (I), where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 3; n is 0 or an integer from 1 to 4; R2 is a hydrocarbon radical or a C-bonded heterohydrocarbon radical; Cp is unsubstituted or C1-C4-alkyl-substituted cyclopentadienyl; Y is a C-bonded chiral group which directs metals of metallation reagents into the ortho position; and Phos is a P-bonded P(III) substituent. The compounds are chiral ligands for complexes of transition metals which are used as homogeneous catalysts in asymmetric syntheses.

Abstract: An expandable multi-set circulation hydroelectric power generation method and system. The system includes a power station control area (A), a transformer substation area (B), a circulation cistern (C) provided with a plurality of small cisterns (CA1 to CA20). Gates (E1 to E20) and protection screenings are installed in the small cisterns (CA1 to CA20). A water pump set station area is provided with a plurality of water pump sets (D1 to D20). The water pump sets (D1 to D20) are connected to the small cisterns (CA1 to CA20). The small cisterns (CA1 to CA20) are connected to pressure pipes (G1 to G20). The pressure pipes (G1 to G20) are connected to work done pipes (H1 to H10). A plurality of water turbine generator sets (F1 to F51) and a plurality of gates (E42, E43, E47, E50, E53, E56, E59, E63, E64, E65) are installed in the work done pipes (H1 to H10).

Abstract: Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; R2 is an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and R3 is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R2 and R3 are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R4 is an unsubstituted or C1-C6-alkyl-, C1-C6-alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group, are ligands for metal complexes which are suitable as catalysts for homogeneous enantioselective hydrogenation.