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· INJOINIC has obtained patents for sampling resistor short circuit protection circuits and fast charging chargers, providing convenient and effective short circuit protection control for circuits

On April 8, 2024, the financial sector reported that, according to the announcement of the China National Intellectual Property Administration, Shenzhen INJOINIC Technology Co., Ltd. had obtained a patent entitled "a sampling resistance short circuit protection circuit and a fast charging charger", with the authorization announcement No. CN114336533B and the application date of October 2020.The patent abstract shows that the present invention provides a sampling resistor short circuit protection circuit, comprising a switch control circuit, a logic control circuit, a detection sampling circuit, and a transmission path switch. The switch control circuit is used to periodically emit a first conduction signal and a first turn off signal; The logic control circuit is used to detect and detect the first sampling electrical signal of the sampling circuit, collect the first conduction signal and first turn off signal of the switch control circuit, obtain the switch cycle and conduction time...
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04-08
2024
· ZTE announces international patent application: "Lightning protection circuit and protection method for power supply"

Securities Star News: According to data from Qichacha, ZTE (000063) has announced an international patent application titled "Lightning Protection Circuit and Protection Method for Power Supply" with patent application number PCT/CN2023/117281. The international publication date is April 4, 2024.The patent details are as follows:Image source: World Intellectual Property Organization (WIPO)Since the beginning of this year, ZTE has announced 511 international patent applications, an increase of 13.81% compared to the same period last year. Based on the financial data of the company's 2023 annual report, the company invested 25.289 billion yuan in research and development, a year-on-year increase of 17.07%.
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04-08
2024
· Wellsun Intelligence has obtained a patent for a dual transistor flyback switching power supply with clamp protection, solving the problem of high voltage on the second switching transistor in the switching power supply

On April 8, 2024, the financial sector reported that, according to the announcement of the China National Intellectual Property Administration, Zhejiang Wellsun Intelligent Technology Co., Ltd. had obtained a patent entitled "a dual tube flyback switching power supply with clamp protection", with authorization announcement No. CN110138229B and application date of June 2019.The patent abstract shows that the present invention discloses a dual transistor flyback switching power supply with clamp protection, comprising: a first switch transistor, a second switch transistor, a switch transistor protection circuit, a clamp protection circuit, a resistor, a voltage regulator diode, a control circuit, a high-frequency transformer, an absorption circuit, an output rectification and filtering circuit; The first switch tube is connected in series with the second switch tube, and the second switch tube follows the first switch tube for synchronous conduction or cutoff. A switch tube protection c...
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04-08
2024
· Anke Innovation has applied for a patent for wireless charging detection method, allowing both chargers to enter charging mode when there is interference when they are close together

On April 5, 2024, the financial sector reported that according to the announcement of the China National Intellectual Property Administration, Anke Innovation Technology Co., Ltd. applied for a project named "Wireless charging detection method, detection circuit and computer storage medium", with the public number of CN117825787A and the application date of September 2022.The patent abstract shows that the present application relates to the field of wireless charging technology and discloses a wireless charging detection method, detection circuit, and computer storage medium. The wireless charging detection method includes: collecting the current of the first charger through a current acquisition module to obtain a voltage waveform; After detecting that the device to be charged is placed on the first charger and determining that the second charger is in a charging state, obtain the voltage waveform within the first preset time as the first voltage waveform; Compare the first voltage w...
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04-07
2024
· Gree Electric Appliances applies for patents on anti backflow control circuits, bidirectional Buck/Boost converters, power circuits, and electrical equipment, effectively preventing energy loss caused by inductor current backflow in the circuit

On April 5, 2024, the financial sector reported that according to the announcement of the China National Intellectual Property Administration, Zhuhai Gree Electric Appliance Co., Ltd. applied for a patent entitled "backflow prevention control circuit and two-way Buck/Boost converter, power circuit, and electrical equipment", with the publication number of CN117833653A, and the application date of December 2023.The patent abstract shows that the present invention provides a backflow prevention control circuit and method for a bidirectional Buck/Boost converter, as well as a bidirectional Buck/Boost converter, power supply circuit, and electrical equipment. The circuit adds a voltage sampling circuit and a voltage detection circuit to increase the sampling of the inductor terminal voltage, so that when the load circuit is lightly loaded or unloaded, it can timely determine whether there is a risk of backflow of the inductor current. When determining the risk of backflow, the correspondi...
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04-07
2024

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