Patents by Inventor Bing Cai
Bing Cai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240136922Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.Type: ApplicationFiled: October 18, 2023Publication date: April 25, 2024Applicant: Huawei Digital Power Technologies Co., Ltd.Inventors: Bing CHEN, Hong TUO, Yi CAI
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Patent number: 11964337Abstract: The present disclosure relates to a NiTi alloy surface cutting process and a roughness adjustment method. Aiming at defects of difficult machining and unsatisfactory machining performance of Ni—Ti alloys, the present disclosure provides a surface cutting process of a difficult-to-machine nickel-titanium alloy, in which firstly, the nickel-titanium alloy is transformed from a two-phase state to a single-phase state using its transformation characteristic, and electrochemical nickel removal treatment is carried out on a surface of the alloy in the single-phase state so as to obtain a porous surface layer, and then a surface material with the porous surface layer is cut. The method provided by the present disclosure can effectively reduce machining difficulty of alloy materials, and can also obtain alloy workpieces with adjustable roughness, which is of great significance for NiTi alloy machining.Type: GrantFiled: April 14, 2023Date of Patent: April 23, 2024Assignee: SHANDONG UNIVERSITYInventors: Bing Wang, Zhanqiang Liu, Hong Wang, Jinfu Zhao, Qinghua Song, Yukui Cai
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Patent number: 11952307Abstract: A method for preparing a microstructure on the surface of glass by titanium oxide nanoparticle-assisted infrared nanosecond laser, including the following steps: (1) dropwise applying a titanium oxide nanoparticle hydrogel onto the surface of a glass sample; (2) pressing another piece of glass on the surface of the hydrogel, so the hydrogel is evenly distributed between the two pieces of glass, and allowing the two pieces of glass to stand horizontally for a period of time to air-dry the hydrogel; (3) separating the two pieces of glass to obtain a glass with a uniform titanium oxide nanoparticle coating; (4) forming a microstructure using an infrared nanosecond laser with a wavelength of 1064 nm; and (5) performing after-treatment, including ultrasonically cleaning the sample with acetone, absolute ethanol and deionized water respectively for 10 min to remove titanium oxide nanoparticles attached to the surface, to obtain a glass sample with the microstructure.Type: GrantFiled: December 28, 2019Date of Patent: April 9, 2024Assignee: SHANDONG UNIVERSITYInventors: Yukui Cai, Zhanqiang Liu, Xichun Luo, Yiping Tang, Yi Wan, Qinghua Song, Bing Wang
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Patent number: 11944116Abstract: A device for removing unwanted objects from cut tobacco in a cut tobacco production line is disclosed, which includes: a raw cut tobacco feeding and conveying unit (N1), a heavy unwanted object removal unit (N2), a cut tobacco dispersion and recovery unit (N3), a moderate unwanted object removal unit (N4), a cut tobacco humidification unit (N5) and a light unwanted object removal unit (N6). An unwanted object removal method using the cut tobacco unwanted object removal device is also disclosed. The device and method of the disclosure can effectively remove unwanted objects from cut tobacco.Type: GrantFiled: November 3, 2023Date of Patent: April 2, 2024Assignee: CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD.Inventors: Jun Tang, Banghua He, Bin Yi, Bing Zhou, Wenqiang Lin, Bo Cai, Hao Wang, Xiaohua Gao, Ze Liu, Ning Ma, Guozhi Tan, Wenqi Li, Li Tang, Huitian Li
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Publication number: 20240093944Abstract: The present invention application relates to a spiral heat exchanger and a heat exchange device.Type: ApplicationFiled: November 30, 2021Publication date: March 21, 2024Applicant: SHANGHAI XINGYE MATERIALS TECHNOLOGY CO., LTD.Inventors: Feng GAO, Zaixiang LIU, Yanfeng CHEN, Yuanfeng CAI, Bing WANG, Zhengyan NIU
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HIGH-STRENGTH AND HIGH-HEAT-RESISTANT BIO-BASED POLYAMIDE COMPOSITION AND PREPARATION METHOD THEREOF
Publication number: 20240093030Abstract: The present invention provides a high-strength and high-heat-resistant bio-based polyamide composition, which consists of the following parts of materials by mass: 43.50-89.95% of bio-based polyamide resin slices; 10-50% of reinforcements; 0.01-2% of rare earth compounds; 0.01-1% of copper salt antioxidant combinations; 0.01-1% of free-radical scavengers; 0.01-0.5% of heat-conducting masterbatches; 0.01-1% of stabilizers; and 0-1% of dispersants. The advantage of the present invention is presented in that: the bio-based polyamide resin slice is prepared through a stepwise polycondensation process of pentanediamine and adipic acid, or through a stepwise polycondensation process of pentanediamine, adipic acid and terephthalic acid and the pentanediamine is prepared through fermentation of starch, so the prepared polyamide resin pertains to an environmentally-friendly engineering plastic.Type: ApplicationFiled: December 28, 2021Publication date: March 21, 2024Applicants: SHANGHAI PRET COMPOSITES CO., LTD., ZHEJIANG PRET ADVANCED MATERIALS CO., LTD., CHONGQING PRET NEW MATERIALS CO., LTD., SHANGHAI PRET CHEMICAL NEW MATERIALS CO., LTDInventors: Haisheng ZHANG, Jianrui CHEN, Yi WANG, Ruixiang YAN, Ying CAI, Bing ZHOU, Meiling XU, Qianhui ZHANG, Qing CAI, Guoyi DU, Tinglong YAN, Wen ZHOU -
Patent number: 11870272Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing of the mobile terminal, and includes two interconnected coils. The two coils are located in a same plane and are connected in series, and winding directions of the two coils are opposite, so that directions of magnetic fluxes generated by the two coils on the metal rear housing are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.Type: GrantFiled: April 22, 2022Date of Patent: January 9, 2024Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Songnan Yang, Xiaoqing Hu, Bing Cai
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Publication number: 20230246486Abstract: A transmit end for multi-device wireless charging includes N half-bridge inverter circuits, a multi-coil gating matrix, and a multi-coil module. Input terminals of the N half-bridge inverter circuits are connected to corresponding direct currents, and output terminals of the N half-bridge inverter circuits are connected to input terminals of the multi-coil gating matrix. The multi-coil gating matrix includes a plurality of switches configured to respectively connect the output terminals of the N half-bridge inverter circuits to corresponding transmit coils in the multi-coil module.Type: ApplicationFiled: March 30, 2023Publication date: August 3, 2023Applicant: Huawei Digital Power Technologies Co., Ltd.Inventors: Yuechao Li, Bing Cai
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Patent number: 11637442Abstract: A wirelessly charged electronic device, a wireless charging method, and a wireless charging system are disclosed. A charger of a receive end of the system includes an open-loop DC-DC (direct current-to-direct current) converter. When power of a transmit end is greater than a first preset threshold of the transmit end and required charging power is greater than a first preset threshold of a receive end, the open-loop DC-DC converter is controlled to work in a fast charging phase, specifically including: controlling the open-loop DC-DC converter to work in a constant current step-down phase to charge a battery at a constant current, or controlling the open-loop DC-DC converter to work in a constant voltage step-down phase to charge the battery at a constant voltage.Type: GrantFiled: November 24, 2021Date of Patent: April 25, 2023Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Baoshan Wu, Yunpeng Yang, Chengliang Zhang, Bing Cai, Donghao Wu
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Patent number: 11557445Abstract: A keyboard device includes a bottom cover, a supporting plate, a flexible circuit board and plural key structures. The supporting plate is installed on the bottom cover. The supporting plate has a curved arc-shaped profile that is bent upwardly in a direction away from the bottom cover. The supporting plate includes plural perforations. The flexible circuit board is arranged between the bottom cover and the supporting plate. The plural key structures are installed on the supporting plate. The plural key structures are penetrated through the corresponding perforations and contacted with the flexible circuit board.Type: GrantFiled: December 29, 2020Date of Patent: January 17, 2023Assignee: Primax Electronics Ltd.Inventors: Liu-Bing Cai, Rui-Qing Xiao, Xiao-Ping Wang, Jin-Chun Zhang
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Patent number: 11482387Abstract: A membrane circuit board includes a first film substrate, a second film substrate, an insulating spacer substrate and a waterproof structure. The first circuit layer is installed on the first film substrate. A second circuit layer is installed on the second film substrate. The insulating spacer substrate arranged between the first film substrate and the second film substrate. The first circuit layer is arranged between the first film substrate and the insulating spacer substrate. The second circuit layer is arranged between the second film substrate and the insulating spacer substrate. The waterproof structure includes a first welding layer and a second welding layer. The first welding layer is arranged between the first film substrate and the insulating spacer substrate. The second welding layer is arranged between the second film substrate and the insulating spacer substrate.Type: GrantFiled: September 24, 2020Date of Patent: October 25, 2022Assignee: PRIMAX ELECTRONICS LTD.Inventors: Liu-Bing Cai, Li-Xiong Deng, Fu-Zhou Wei, Li-Qiang Chen, Xiao-Ping Wang
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Publication number: 20220247214Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing of the mobile terminal, and includes two interconnected coils. The two coils are located in a same plane and are connected in series, and winding directions of the two coils are opposite, so that directions of magnetic fluxes generated by the two coils on the metal rear housing are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.Type: ApplicationFiled: April 22, 2022Publication date: August 4, 2022Inventors: Songnan YANG, Xiaoqing HU, Bing CAI
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Publication number: 20220209583Abstract: A remote wireless charging transmit end is configured to wirelessly charge a receive end. The transmit end includes a transmit end processor, a fundamental frequency-radio frequency conversion unit, and a transmit end antenna. The transmit end processor is configured to generate a composite signal based on a control signal and a power signal, and send the composite signal to the fundamental frequency-radio frequency conversion unit. The control signal is used to control a working status of the receive end, and the power signal is used to charge the receive end. The fundamental frequency-radio frequency conversion unit is configured to convert the composite signal into a radio frequency signal, and send the radio frequency signal to the transmit end antenna. The transmit end antenna is configured to transmit the radio frequency signal corresponding to the composite signal.Type: ApplicationFiled: March 14, 2022Publication date: June 30, 2022Inventors: Ning PAN, Zhixia DU, Bing CAI
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Patent number: 11355964Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing (3) of the mobile terminal, and includes two interconnected coils (701,702). The two coils (701,702) are located in a same plane and are connected in series, and winding directions of the two coils (701,702) are opposite, so that directions of magnetic fluxes generated by the two coils (701,702) on the metal rear housing (3) are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.Type: GrantFiled: December 19, 2019Date of Patent: June 7, 2022Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.Inventors: Songnan Yang, Xiaoqing Hu, Bing Cai
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Publication number: 20220165520Abstract: A keyboard device includes a bottom cover, a supporting plate, a flexible circuit board and plural key structures. The supporting plate is installed on the bottom cover. The supporting plate has a curved arc-shaped profile that is bent upwardly in a direction away from the bottom cover. The supporting plate includes plural perforations. The flexible circuit board is arranged between the bottom cover and the supporting plate. The plural key structures are installed on the supporting plate. The plural key structures are penetrated through the corresponding perforations and contacted with the flexible circuit board.Type: ApplicationFiled: December 29, 2020Publication date: May 26, 2022Inventors: Liu-Bing Cai, Rui-Qing Xiao, Xiao-Ping Wang, Jin-Chun Zhang
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Publication number: 20220085642Abstract: A wirelessly charged electronic device, a wireless charging method, and a wireless charging system are disclosed. A charger of a receive end of the system includes an open-loop DC-DC (direct current-to-direct current) converter. When power of a transmit end is greater than a first preset threshold of the transmit end and required charging power is greater than a first preset threshold of a receive end, the open-loop DC-DC converter is controlled to work in a fast charging phase, specifically including: controlling the open-loop DC-DC converter to work in a constant current step-down phase to charge a battery at a constant current, or controlling the open-loop DC-DC converter to work in a constant voltage step-down phase to charge the battery at a constant voltage.Type: ApplicationFiled: November 24, 2021Publication date: March 17, 2022Inventors: Baoshan WU, Yunpeng YANG, Chengliang ZHANG, Bing CAI, Donghao WU
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Publication number: 20220068575Abstract: A membrane circuit board includes a first film substrate, a second film substrate, an insulating spacer substrate and a waterproof structure. The first circuit layer is installed on the first film substrate. A second circuit layer is installed on the second film substrate. The insulating spacer substrate arranged between the first film substrate and the second film substrate. The first circuit layer is arranged between the first film substrate and the insulating spacer substrate. The second circuit layer is arranged between the second film substrate and the insulating spacer substrate. The waterproof structure includes a first welding layer and a second welding layer. The first welding layer is arranged between the first film substrate and the insulating spacer substrate. The second welding layer is arranged between the second film substrate and the insulating spacer substrate.Type: ApplicationFiled: September 24, 2020Publication date: March 3, 2022Inventors: Liu-Bing Cai, Li-Xiong Deng, Fu-Zhou Wei, Li-Qiang Chen, Xiao-Ping Wang
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Publication number: 20220015709Abstract: A keyboard device having functionality of physiological parameter measurement is disclosed, which comprises a keyboard main body and at least two physiological signal sensing units. The physiological signal sensing unit comprises a lighting element and a light sensing element. Moreover, the physiological signal sensing unit further comprises a touch plane that is exposed out of the surface of the keyboard main body. When a user is typing the button keys of the keyboard main body, the user can touch the touch plane by one finger thereof, such that the physiological parameter calculating unit receives an optical signal through the physiological signal sensing unit, thereby calculating physiological parameters of the user after applying a physiological parameter calculating process to the optical signal. The calculated physiological parameter comprises heartbeat and heart rate.Type: ApplicationFiled: August 26, 2020Publication date: January 20, 2022Inventors: Ling-Bo Li, Xiao-Ping Wang, Liu-Bing Cai
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Patent number: 11204651Abstract: A keyboard device includes a membrane circuit board and a key structure over the membrane circuit board. The key structure includes a keycap, a plunger structure, a key pedestal and an elastic element. The plunger structure is arranged between the keycap and the elastic element. At least a portion of the keycap is disposed within a pedestal dust-storage chamber of the key pedestal. At least a portion of the plunger structure is disposed within a guiding chamber of the key pedestal. Due to the relative location between the keycap, the plunger structure and the key pedestal, the path of the dust to enter the guiding chamber is extended or blocked. Consequently, the dust-proof efficacy is enhanced.Type: GrantFiled: February 24, 2020Date of Patent: December 21, 2021Assignee: PRIMAX ELECTRONICS LTD.Inventors: Liu-Bing Cai, Li-Qiang Chen
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Patent number: 11094479Abstract: A key structure includes a keycap, a pedestal and an elastic element. The keycap includes a main body and a coupling shaft. The pedestal includes a key slot. The key slot has an upper part and a lower part. The coupling shaft is penetrated through the upper part of the key slot and movable within the key slot upwardly or downwardly. The elastic element is installed in the lower part of the key slot. After an external force applied to the keycap is released, the elastic element is elastically restored, so that the keycap is returned to an original position. At the same time, the buffering elements in the key slot interfere with the coupling shaft. Consequently, an ascending speed of the keycap is reduced, and a click sound generated from the collision between keycap and the pedestal is reduced.Type: GrantFiled: May 28, 2020Date of Patent: August 17, 2021Assignee: PRIMAX ELECTRONICS LTD.Inventors: Xiao-Jun Chu, Li-Qiang Chen, Liu-Bing Cai, Sheng-An Tsai, Chun-Che Wu