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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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Wenbin Lu , Wei Zhang , Yizhen Hou , Teng Yu , Xiyang Zuo , Xingyuan Wu , Taosheng Zhu
IPC: H01M10/615 , H01M10/651 , H01M10/6571 , H01M10/42 , G01R31/382 , G01R19/165
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Meng Li , Zhimin Dan , Yizhen Hou
IPC: H02J7/00 , H01M10/48 , H01M10/44 , H01M10/052 , H01M10/42
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Meng Li , Zhimin Dan , Yizhen Hou
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Liansong Wang , Zhimin Dan , Changjian Liu , Fupeng Cai , Fuming Ye
Abstract: 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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Patent Agency Ranking
公开(公告)号：US11146090B2
公开(公告)日：2021-10-12
申请号：US16539996
申请日：2019-08-13
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Wenbin Lu , Wei Zhang , Yizhen Hou , Jia Xu , Jiechao Luo , Teng Yu
IPC: G01R31/08 , H04J1/00 , H04L12/16 , H02J7/00 , G01R31/389 , G01R31/3842 , G01R31/392 , H04W52/02
Abstract: 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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公开(公告)号：US11001165B2
公开(公告)日：2021-05-11
申请号：US16289413
申请日：2019-02-28
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yizhen Hou , Zhimin Dan , Wei Zhang , Xiyang Zuo , Xingyuan Wu , Taosheng Zhu
Abstract: The embodiments of the present disclosure provide a battery pack heating apparatus and a method of battery pack heating control. According to an embodiment of the present disclosure, a battery pack heating apparatus is provided. The battery pack heating apparatus is applicable portably and externally to a vehicle and includes: an electrical energy conversion component, including an energy storage device, a first set of switches and a second set of switches; a heating interface connected to the energy storage device via the first set of switches to form a first heating loop and connected to the energy storage device via the second set of switches to form a second heating loop, the heating interface being configured to be connected to a battery pack of one vehicle; and a heating control module configured to control a direction of electrical energy transfer between the battery pack and the energy storage device.
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公开(公告)号：US10890711B2
公开(公告)日：2021-01-12
申请号：US16940252
申请日：2020-07-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Meng Li , Yizhen Hou , Wei Zhang , Lidan Yan
Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.
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公开(公告)号：US10823784B2
公开(公告)日：2020-11-03
申请号：US16898175
申请日：2020-06-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Wei Zhang , Yizhen Hou , Jia Xu
Abstract: The present disclosure provides a current detection system, method and device. The current detection system includes a management unit and a current detection device that is connected with the management unit. The current detection device includes a shunt-type current measurement unit, an open-loop Hall-type current measurement unit and an isolation power unit.
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公开(公告)号：US10780795B2
公开(公告)日：2020-09-22
申请号：US16370975
申请日：2019-03-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xiyang Zuo , Zhimin Dan , Wei Zhang , Yizhen Hou , Guowei Li , Xingyuan Wu , Yanru Li
Abstract: The disclosure provides a battery heating system and a control method thereof. The system includes a first switch, a second switch, a switch component, a motor, and a main controller. The first switch, the second switch, the switch component and the main controller are integrated in a same housing. The main controller is to determine, based on a state parameter of the battery pack, that the battery pack needs to be heated, and to send a battery heating request to a vehicle controller, so as to enable the vehicle controller to send a battery heating instruction to the main controller according to the battery heating request in a case where a vehicle is in a static state and the motor is not operating; and to control, based on the battery heating instruction, the first switch, the second switch and the switch component so as to heat the battery pack.
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