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公开(公告)号：US20240235246A9
公开(公告)日：2024-07-11
申请号：US18380102
申请日：2023-10-13
发明人： Tengshen Zhang , Yafeng Wang , Linfeng Zhong , Jinfa Zhang , Junhao Xia
CPC分类号： H02J7/345 , H02J7/0025 , H02J7/0063 , H02J7/007182 , H02J2207/20 , H02J2207/30 , H02J2207/50
摘要： An energy storage module with bypass circuit is provided. The energy storage module includes a first battery pack, a first capacitor, a bypass circuit and a bidirectional isolated converter. The first capacitor is electrically connected between the positive bus connection terminal and the first positive battery terminal or between the negative bus connection terminal and the first negative battery terminal. The bypass circuit is electrically connected to two terminals of the first capacitor. The first positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the positive and negative bus connection terminals respectively or are electrically connected to the first positive and negative battery terminals respectively. The second positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the two terminals of the first capacitor respectively. When the energy storage module enters a bypass mode, the bypass circuit bypasses the first capacitor.
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2.发明公开公开(公告)号：US20240162805A1
公开(公告)日：2024-05-16
申请号：US18372582
申请日：2023-09-25
发明人： Kai Dong , Yichao Wang , Yuhua Hu , Jinfa Zhang
CPC分类号： H02M1/0083 , H02M7/05 , H02M7/219
摘要： In the present disclosure, the multi-level AC/DC conversion circuit and the multi-level DC/DC conversion circuit calculate the duty ratio of synchronous rectification switch according to the input voltage, the output voltage, the interval time of turning on the main switch, the switching cycle and the duty ratio of main switch, thereby eliminating the need for additional zero-current detecting function or zero-crossing detection circuit in conventional AC/DC conversion circuits. Accordingly, for the multi-level AC/DC conversion circuit and the multi-level DC/DC conversion circuit of the present disclosure, the cost is reduced, and the reliability is enhanced.
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公开(公告)号：US20240136841A1
公开(公告)日：2024-04-25
申请号：US18240482
申请日：2023-08-30
发明人： Tengshen Zhang , Jinfa Zhang , Linfeng Zhong , Changyong Wang , Yafeng Wang
CPC分类号： H02J7/00714 , H02J7/0013 , H02M1/0048 , H02M1/0067 , H02M1/0095 , H02M3/01 , H02M3/07 , H02M3/33571 , H02M3/33584 , H02J2207/20
摘要： An energy storage module includes a bus connection part, a battery pack, a capacitor and a series compensation DC conversion device. A first conduction terminal of the series compensation DC conversion device is electrically connected with a positive bus connection terminal and a negative bus connection terminal of the bus connection part, or the first conduction terminal is connected with a battery positive terminal and a battery negative terminal of the battery pack. A second conduction terminal of the series compensation DC conversion device is electrically connected with two terminals of the capacitor. A four-quadrant DC/DC converter of the series compensation DC conversion device controls the capacitor to generate a compensation voltage to compensate a voltage between the two terminals of the battery pack, or the four-quadrant DC/DC converter adjusts a current flowing through the battery pack to a set value.
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公开(公告)号：US11774516B2
公开(公告)日：2023-10-03
申请号：US17660212
申请日：2022-04-22
发明人： Yunfei Liu , Haibin Song , Daofei Xu , Jinfa Zhang
CPC分类号： G01R31/40 , G01R19/0092 , G01R19/32 , G01R31/62
摘要： The present application provides a detecting method of an operating state of a power supply and a detecting apparatus, where the power supply includes a primary circuit, a transformer and a secondary circuit. The secondary circuit includes a secondary current detecting unit, a temperature detecting unit and a secondary controlling unit. Firstly the secondary current detecting unit detects a current value of the secondary circuit, then the secondary controlling unit compares the current value of the secondary circuit with a preset current threshold. When the current value of the secondary circuit is less than or equal to the preset current threshold, the temperature detecting unit detects a temperature value of the power supply and the secondary controlling unit determines the operating state of the power supply according to the acquired temperature value of the power supply.
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公开(公告)号：US11737250B2
公开(公告)日：2023-08-22
申请号：US17447057
申请日：2021-09-07
发明人： Jinfa Zhang , Kai Dong , Changyun Xiao , Jinhao Gan , Yong Huang , Junlai Huang , Zhongwei Ke
CPC分类号： H05K7/20927 , H02M3/003 , H02M1/327
摘要： The present application provides a power supply system for supplying power to network device, comprising power supply module, housing, and stereoscopic accommodating space therebetween. The power supply module without a fan comprises: a primary circuit comprising at least one primary switch and configured to receive AC input voltage and convert the AC input voltage into a first voltage; a transformer comprising primary and secondary windings and configured to convert the first voltage into a second voltage, the primary winding is coupled to the primary circuit; and a secondary circuit comprising at least one secondary switch and configured to convert the second voltage into a DC output voltage for the network device, the secondary circuit is coupled to the secondary winding, the secondary switch adopts SMT package, and power density of the power supply module is 60 W/inch3 or more. The stereoscopic accommodating space is filled with liquid coolant for cooling.
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公开(公告)号：US11557780B2
公开(公告)日：2023-01-17
申请号：US17233568
申请日：2021-04-19
发明人： Guoqiao Shen , Tsu-Hua Al , Jinfa Zhang
IPC分类号： H01M8/04 , H01M8/04858
摘要： An energy regulation method for a fuel cell energy supply system including a plurality of fuel cell power generation modules, a plurality of power conversion modules, and a communication control module connected to the plurality of power conversion modules includes: calculating a parameter average value based on an energy state parameter of the fuel cell power generation module; calculating a compensation factor depending on the energy state parameter and the parameter average value; calculating a control parameter reference value of each of the power conversion modules based on a droop algorithm, and multiplying the control parameter reference value by the corresponding compensation factor to obtain a control parameter set value of the power conversion module; and regulating the corresponding fuel cell power generation modules depending on the control parameter set value.
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公开(公告)号：US11489440B2
公开(公告)日：2022-11-01
申请号：US17146471
申请日：2021-01-11
发明人： Haibin Song , Jian Zhou , Qi Fu , Daofei Xu , Jinfa Zhang
摘要： The present invention discloses a power factor correction circuit. The power factor correction circuit includes: a first bridge arm having a first switch and a second switch; a second bridge arm having a third switch and a fourth switch; a first inductor and a second inductor; a first capacitor and/or a second capacitor connected with a common point between the second inductor and the first inductor; and a third capacitor and/or a fourth capacitor, the third capacitor connected in parallel to the third switch based on an arrangement of the second capacitor and having a capacitance value same as that of the second capacitor, the fourth capacitor connected in parallel to the fourth switch based on an arrangement of the first capacitor and having a capacitance value same as that of the first capacitor.
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公开(公告)号：US11462994B2
公开(公告)日：2022-10-04
申请号：US17152882
申请日：2021-01-20
发明人： Kai Dong , Dehong Xu , Jinfa Zhang
摘要： A control method for a power factor correction circuit is disclosed. The power factor correction circuit includes a first bridge arm, a second bridge arm, an output capacitor and an active clamp unit. The control method includes steps of providing a first driving waveform to control a main switch, providing a second driving waveform to control an auxiliary switch, and providing a third driving signal to control a fifth switch. A first delay time is between the turning-off time point of the third driving signal and the turning-on time point of the first driving waveform, a second delay time is between the turning-on time point of the first driving waveform and the turning-off time point of the second driving waveform, and a third delay time is between the turning-off time point of the second driving waveform and the turning-on time point of the third driving signal.
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公开(公告)号：USD909296S1
公开(公告)日：2021-02-02
申请号：US29630943
申请日：2017-12-24
设计人： Xiaojun Chen , Jinfa Zhang , Daofei Xu
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公开(公告)号：US20200212816A1
公开(公告)日：2020-07-02
申请号：US16666168
申请日：2019-10-28
发明人： Hao Sun , Minli Jia , Jinfa Zhang
摘要： An on-board charging/discharging system includes a bidirectional converter and a low-voltage converter. When the high-voltage battery is charged or discharged by the bidirectional converter, the bidirectional converter is operated in a variable-frequency mode and the low-voltage converter is also operated in the variable-frequency mode. The on/off states of different switches are controlled according to the output gain of the bidirectional converter, and thus the on-board charging/discharging system has optimized volume and reduced cost. Moreover, the soft switching is achieved when the output gain is lower than 1, greater than 1 or equal to 1. Consequently, the efficiency of the on-board charging/discharging system is enhanced. Moreover, while the low-voltage converter is operated in a fixed-frequency mode, the first bridge of the bidirectional converter is correspondingly controlled. Consequently, the voltage of the bus capacitor is within a reasonable range.
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