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公开(公告)号：US20220239127A1
公开(公告)日：2022-07-28
申请号：US17459220
申请日：2021-08-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Weiping SUN , Zhimin DAN , Zhanliang LI , Shuyun XIONG , Yu YAN
IPC: H02J7/00 , B60L58/12 , G01R31/382
Abstract: Embodiments of the present application provides a method for pre-charging a power conversion device and a power conversion device. The power conversion device is configured to perform power conversion between a charging pile and a traction battery, and the method includes: receiving, by the power conversion device, a first message sent by a battery management system of the traction battery, and the first message is configured to indicate that the battery management system is ready for charging; performing, by the power conversion device, a pre-charging, and the pre-charging includes: charging a capacitor in the power conversion device; and forwarding, by the power conversion device, the first message to the charging pile after the pre-charging is completed. The technical solution of the embodiments of the present application can ensure a normal charging process.
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公开(公告)号：US20220239120A1
公开(公告)日：2022-07-28
申请号：US17543061
申请日：2021-12-06
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Weiping SUN , Zhimin DAN , Zhanliang LI , Shuyun XIONG , Xiyang ZUO
IPC: H02J7/00
Abstract: Embodiments of the present application provide a pre-charging method of a power conversion device and a power conversion device. The power conversion device is used for a power conversion between a charging pile and a power battery and the method includes: receiving, by the power conversion device, a first message transmitted by a battery management system of the power battery, where the first message is used to indicate a charging readiness of the battery management system; and forwarding, by the power conversion device, the first message to the charging pile and performing a pre-charging, where the pre-charging includes charging a capacitor in the power conversion device. The technical solution in embodiments of the present application is capable of ensuring normal performing of a charging process.
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公开(公告)号：US20230070522A1
公开(公告)日：2023-03-09
申请号：US17981551
申请日：2022-11-07
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shuyun XIONG , Zhimin DAN , Yu YAN , Zhanliang LI , Weiping SUN
Abstract: Embodiments of the present application provides a charging method and a power conversion equipment, which can effectively ensure a normal charging of a traction battery. The charging method is used for charging the traction battery, the method includes: obtaining, by a power conversion equipment, a battery state parameter of the traction battery; sending, by the power conversion equipment, a charging information to a charging pile, the charging information includes a direct current charging parameter calculated from a pulse charging parameter; receiving, by the power conversion equipment, a direct current output by the charging pile, on the basis of the direct current charging parameter; converting, by the power conversion equipment, the direct current into a pulse current on the basis of the pulse charging parameter, the pulse current is used for charging the traction battery; where, the battery state parameter is used for determining the pulse charging parameter.
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Patent Agency Ranking
公开(公告)号：US20230076134A1
公开(公告)日：2023-03-09
申请号：US17980860
申请日：2022-11-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shuyun XIONG , Yu YAN , Zhimin DAN , Zhanliang LI , Weiping SUN
Abstract: Embodiments of the present application provide a charging method, a battery management system for a traction battery and a charging pile, which can effectively ensure normal charging of an electric vehicle. The charging method is used for charging a traction battery, and the method includes: determining, by the battery management system (BMS) of the traction battery, a pulse charging demand parameter according to a battery state parameter of the traction battery; and sending a pulse charging information to a charging pile by the BMS, the pulse charging information including the pulse charging demand parameter for indicating the charging pile to output a pulse current for charging the traction battery.
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公开(公告)号：US20220239135A1
公开(公告)日：2022-07-28
申请号：US17540436
申请日：2021-12-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhanliang LI , Yu YAN , Shuyun XIONG , Weiping SUN , Zhimin DAN
Abstract: The present application provide a power supply control method for a power conversion apparatus, where the power conversion apparatus is configured to conduct a power conversion between a charging apparatus and a power battery, the method includes: conducting a power-on self-test with the charging apparatus of auxiliary power by the power conversion apparatus; determining a power supply priority order of the charging power and the power battery on the basis of a state parameter of the power battery under the condition that the self-test of the power conversion apparatus succeeds; determining the one of the charging power of the charging apparatus and the power battery with a higher power supply priority as a current working power of the power conversion apparatus by the power conversion apparatus. The method of the present application can provide a stable working power for the power conversion apparatus without additional power supply device.
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公开(公告)号：US20210231742A1
公开(公告)日：2021-07-29
申请号：US17051184
申请日：2020-01-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng LI , Zhimin DAN , Weiping SUN , Yizhen HOU , Wei ZHANG
IPC: G01R31/389 , G01R31/36 , G01R31/364
Abstract: The present application discloses an insulation detection circuit, a method and a battery management system. The circuit includes: a first voltage dividing module, where, one end of the first voltage dividing module is connected to a positive electrode of a power battery to be detected, and the other end of the first voltage dividing module is connected to a first isolation module and a second voltage dividing module respectively; the second voltage dividing module, connected to a negative electrode of the power battery to be detected; the first isolation module, connected to one end of a sampling module; the sampling module, where, the other end of the sampling module is connected to one end of a signal generating module; the signal generating module, where, the other end of the signal generating module is connected to power ground; and the processing module.
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公开(公告)号：US20220239140A1
公开(公告)日：2022-07-28
申请号：US17547691
申请日：2021-12-10
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhanliang LI , Zhimin DAN , Yu YAN , Weiping SUN , Shuyun XIONG
IPC: H02J7/00
Abstract: An embodiment of the present application discloses a charging method, including: acquiring a state parameter of a power battery by a power conversion apparatus; setting a charging mode to a pulse charging mode by the power conversion apparatus when the battery temperature is lower than a first preset threshold; and converting charging power of a charging apparatus and then charging the power battery by the power conversion apparatus in the pulse charging mode. Through the technical solution, the power conversion apparatus acquires a battery temperature of the power battery, when the battery temperature is lower than the first preset threshold, the power conversion apparatus converts the charging power output by the charging apparatus, and outputs a pulse current to charge the tract battery, to prevent the charging apparatus directly charging the power battery in a low temperature, thereby ensuring the performance of the power battery.
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8.发明申请公开(公告)号：US20190234997A1
公开(公告)日：2019-08-01
申请号：US16233620
申请日：2018-12-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin DAN , Yizhen HOU , Weiping SUN , Meng LI , Wei ZHANG , Teng YU
CPC classification number: G01R27/205 , B60L3/0069 , B60L3/12 , B60L50/60 , G01R31/025 , H01H47/002 , H01M10/425 , H01M2010/4271
Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method comprises steps of: controlling the insulation resistance obtaining circuit to output a low-frequency AC signal; when both the main relay and the pre-charge relay are switched off, obtaining an internal side insulation resistance of the main relay according to the low-frequency AC signal; if the internal side insulation resistance of the main relay is normal, controlling the pre-charge relay to be switched on; and when the main relay is switched off and the pre-charge relay is switched on, obtaining an external side insulation resistance value of the main relay according to the low-frequency AC signal. Therefore, the present disclosure can obtain the internal side and external side insulation conditions of the main relay.
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