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公开(公告)号：US12051934B2
公开(公告)日：2024-07-30
申请号：US17563513
申请日：2021-12-28
发明人： Yu Yan , Xiyang Zuo , Zhimin Dan , Haili Li , Shan Huang , Shichao Li
CPC分类号： H02J7/00714 , B60L50/60 , B60L58/12 , H01M10/425 , H02J7/0048 , B60L2210/10 , B60L2210/30 , H01M2010/4271
摘要： Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.
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公开(公告)号：US11894786B2
公开(公告)日：2024-02-06
申请号：US17858864
申请日：2022-07-06
发明人： Xiong Zheng , Xianxi Pan , Yu Luo , Zhimin Dan
CPC分类号： H02P21/05 , H02P6/10 , H02P21/22 , H02P2207/05
摘要： This application provides a permanent-magnet synchronous machine control method and device, and a permanent-magnet synchronous machine control system. The method includes: obtaining a d-axis current id and a q-axis current iq in a permanent-magnet synchronous machine control loop at a current moment; obtaining a fifth-order harmonic current id5th and a seventh-order harmonic current id7th in the d-axis current id in the permanent-magnet synchronous machine control loop at the current moment, and a fifth-order harmonic current iq5th and a seventh-order harmonic current iq7th in the q-axis current iq in the permanent-magnet synchronous machine loop at the current moment; determining a d-axis current idk+1 at a next moment in each switch state; determining a q-axis current iqk+1 at the next moment in each switch state based on the first current idk, the second current iqk, and the second voltage in each switch state; and determining a control policy of the permanent-magnet synchronous machine.
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公开(公告)号：US11876160B2
公开(公告)日：2024-01-16
申请号：US18148126
申请日：2022-12-29
发明人： Xinwei Chen , Zhimin Dan , Chengyong Liu , Wei Zhang , Yizhen Hou , Xian Huang
IPC分类号： H01M10/6571 , H01M10/615 , H01M10/63
CPC分类号： H01M10/6571 , H01M10/615 , H01M10/63
摘要： A heating system includes first and second input ends, first and second battery modules, first switch and second switches, and a control unit. The first switch is connected between first terminals of the first and second battery modules. Second terminals of the first and second battery modules are connected to each other. The second switch is connected between the first input end and the first terminal of the second battery module. The second input end is connected to the first terminal of the first battery module. The first terminals of the first and second battery modules have a same polarity, and the second terminals of the first and second battery modules have a same polarity. The control unit is connected to the first and second switches, and configured to control the first and second switches to be turned on or off.
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公开(公告)号：US11502346B1
公开(公告)日：2022-11-15
申请号：US17877208
申请日：2022-07-29
发明人： Xiaojian Huang , Zhimin Dan , Bao Li , Xiyang Zuo
IPC分类号： H01M10/63 , H01M10/615 , H01M10/625 , H01M10/48 , H02P29/66 , G01K3/00 , G01K3/10 , G01R31/34 , B60L58/27
摘要： Disclosed is a traction battery self-heating control method and a device. Acquiring a second temperature of a rotor at a current sampling time according to system parameters and a first temperature of the rotor at a previous sampling time, and estimating a third temperature of the rotor at a next sampling time according to the first temperature and the second temperature, and stopping the self-heating of the traction battery when the third temperature reaches a demagnetization temperature of the rotor. Whether to stop the self-heating of the traction battery is determined by estimating a rotor temperature under the self-heating condition, and comparing the rotor temperature with the demagnetization temperature of the rotor, and thus the self-heating control of the traction battery is realized.
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公开(公告)号：US11309598B2
公开(公告)日：2022-04-19
申请号：US16233096
申请日：2018-12-27
发明人： Zhimin Dan , Wenbin Lu , Wei Zhang , Yizhen Hou , Teng Yu , Xiyang Zuo , Xingyuan Wu , Taosheng Zhu
IPC分类号： H01M10/615 , H01M10/651 , H01M10/6571 , H01M10/42 , G01R31/382 , G01R19/165
摘要： The present disclosure provides a heating control method and a heating control device. The heating control method includes: acquiring an average current value in a heating circuit of a power battery pack; calculating a current output value required for nth cycle according to an average current value of the nth cycle, an average current value of (n−1)th cycle, an average current value of (n−2)th cycle, a preset current value, n is equal to or greater than 3; outputting a PWM signal to a switch device of the heating circuit according to a pre-calibrated PWM control parameter corresponding to the current output value so that a difference between an actual current value in the heating circuit and the preset current value is less than a preset threshold.
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公开(公告)号：US11296525B2
公开(公告)日：2022-04-05
申请号：US15733803
申请日：2020-06-15
发明人： Meng Li , Zhimin Dan , Yizhen Hou
IPC分类号： H02J7/00 , H01M10/48 , H01M10/44 , H01M10/052 , H01M10/42
摘要： The present disclosure provides a control device, an energy conversion system, an energy conversion method and a storage medium. The control device includes: a detection unit configured to detect a first voltage between a positive electrode of the energy storage device and a first end of an energy conversion device, a second voltage between a negative electrode of the energy storage device and a second end of the energy conversion device, and a third voltage between the positive electrode and the negative electrode of the energy storage device; a processing unit configured to calculate a resistance value corresponding to the energy conversion device according to the first voltage, the second voltage, and the third voltage; when the value of resistance is greater than a resistance threshold value, controlling the energy storage device to supply power to the electrical equipment through the energy conversion device.
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公开(公告)号：US11249123B2
公开(公告)日：2022-02-15
申请号：US17134564
申请日：2020-12-28
发明人： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
IPC分类号： G01R27/20 , H01H47/00 , H01M10/42 , B60L50/60 , B60L3/00 , B60L3/12 , G01R31/327 , G01R31/00
摘要： Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.
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公开(公告)号：US11183917B1
公开(公告)日：2021-11-23
申请号：US17124685
申请日：2020-12-17
发明人： Meng Li , Zhimin Dan , Yizhen Hou
摘要： A power converter as provided includes: a control circuit configured to receive a first electric energy supplied to the control circuit from an energy storage device, receive a second electric energy supplied to the control circuit from a power grid equipment, and be powered on with a third electric energy which is the first electric energy or the second electric energy, and output a control signal; and a power conversion circuit configured to receive the control signal and perform power conversion between the energy storage device and the power grid equipment according to the control signal.
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公开(公告)号：US11171569B2
公开(公告)日：2021-11-09
申请号：US17137411
申请日：2020-12-30
发明人： Liansong Wang , Zhimin Dan , Changjian Liu , Fupeng Cai , Fuming Ye
摘要： The present application discloses a wake-up method and wake-up system for a battery management system. The method may include converting, by a conversion unit, a low-voltage power signal detected at a low-voltage input port into a high-voltage wake-up signal, and receiving, by a high-voltage control module, a working voltage provided by a power battery pack under control of the high-voltage wake-up signal; controlling, by the high-voltage control module, the high-voltage transmission module to be turned on, providing the working voltage to a synchronous rectifying module by the turned-on high-voltage transmission module, and converting high-voltage electric energy provided by the power battery pack into low-voltage electric energy; and transmitting, under control of the synchronous rectifying module, the low-voltage electric energy to the low-voltage controller, and waking up the battery management system by the low-voltage controller.
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公开(公告)号：US11146090B2
公开(公告)日：2021-10-12
申请号：US16539996
申请日：2019-08-13
发明人： Zhimin Dan , Wenbin Lu , Wei Zhang , Yizhen Hou , Jia Xu , Jiechao Luo , Teng Yu
IPC分类号： G01R31/08 , H04J1/00 , H04L12/16 , H02J7/00 , G01R31/389 , G01R31/3842 , G01R31/392 , H04W52/02
摘要： The present disclosure provides a method for transmitting information in a battery management system. The method includes: determining, from a plurality of slave nodes, a fault slave node that communicates abnormally with a master node in the battery management system; selecting a target slave node from the plurality of slave nodes, wherein the target slave node is a slave node that communicates normally with both the master node and the fault slave node; transmitting frequency conversion information to the target slave node, so that the target slave node forwards the frequency conversion information to the fault slave node, and the fault slave node performs a frequency conversion based on the frequency conversion information; and transmitting information with the fault slave node using a frequency after the frequency conversion. According to embodiments of the present disclosure, the reliability of wireless communication in the battery management system can be improved.
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