公开(公告)号：US20200094682A1

公开(公告)日：2020-03-26

申请号：US16357558

申请日：2019-03-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Kai WU ,  Wei DAI ,  Chao WANG ,  Qiandeng LI

IPC: B60L3/04 ,  B60L3/00 ,  H03K17/687

Abstract: The present disclosure provides a high-voltage interlock system and a detection method thereof. The high-voltage interlock system includes a target control device and at least one non-target control device connected in sequence. The target control device includes a detection unit, a current generation controller, a current generator, and a second high-voltage component. A controller in the target control device generates a pulse drive signal for driving the current generation controller, receives a detection result signal output from a current detector, and determines a fault of a high-voltage interlock circuit according to the detection result signal; the current generation controller generates an alternating voltage signal according to the pulse drive signal; the current generator outputs an alternating current signal according to the alternating voltage signal; the current detector acquires a voltage signal across a detection resistor set and outputs the detection result signal.

公开(公告)号：US20230222206A1

公开(公告)日：2023-07-13

申请号：US17978903

申请日：2022-11-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chao WANG ,  Tingda LIN ,  Jihai XIE

IPC: G06F21/45 ,  G06F21/57 ,  G06F21/62

CPC classification number: G06F21/45 ,  G06F21/572 ,  G06F21/6218 ,  G06F2221/034

Abstract: The present application relates to a method for manufacturing a battery management system and a method for starting up a battery management system. The battery management system includes a plurality of battery management units, the plurality of battery management units include a first battery management unit and a second battery management unit, the first battery management unit includes a main core micro control unit, a first data transmission micro control unit and a hardware security module, and the second battery management unit includes a second data transmission micro control unit. According to the embodiments of the present application, a comprehensive verification for the battery management system including a plurality of battery management units can be achieved with one hardware security module.

公开(公告)号：US20230221949A1

公开(公告)日：2023-07-13

申请号：US18185213

申请日：2023-03-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chunshu LAN ,  Tingda LIN ,  Chao WANG

IPC: G06F8/65 ,  H04L9/06 ,  B60R16/023

CPC classification number: G06F8/65 ,  H04L9/0643 ,  B60R16/0231 ,  H04L2209/84

Abstract: A vehicle secure start method applicable to an electronic control unit of a vehicle includes, after the vehicle is powered on, signing stored first firmware based on a preset symmetric encryption algorithm and a symmetric key to obtain a first signature value, comparing the first signature value with a stored second signature value, and controlling the vehicle to be securely started in response to the first signature value being same as the second signature value. The symmetric key is generated based on a random number generation algorithm when firmware is received for a first time. The second signature value is generated by performing encryption based on the preset symmetric encryption algorithm and the symmetric key when the first firmware is received.

公开(公告)号：US20230219454A1

公开(公告)日：2023-07-13

申请号：US17930276

申请日：2022-09-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chao WANG ,  Chunshu LAN ,  Jihai XIE

IPC: B60L53/80 ,  B60L53/66

CPC classification number: B60L53/80 ,  B60L53/66

Abstract: This application provides a battery swap method, a battery swap station, and an electrical apparatus. The battery swap method includes: obtaining identity information of an electrical apparatus which requests a swap of a battery; authenticating the identity information; establishing communication with the electrical apparatus in response to a determination that the identity information passes the authentication; determining whether the battery in the electrical apparatus and a shared battery in the battery swap station satisfy a battery swap condition; and swapping the battery in the electrical apparatus with the shared battery in the battery swap station in response to a determination that at least one of the battery in the electrical apparatus and the shared battery in the battery swap station satisfies the battery swap condition. The batteries are authenticated in addition to authentication of the electrical apparatus, thereby improving reliability and security of authentication during a battery swap.

公开(公告)号：US20200094680A1

公开(公告)日：2020-03-26

申请号：US16364395

申请日：2019-03-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Chao WANG ,  Wei DAI ,  Qiandeng LI

IPC: B60L3/00 ,  H03K19/20 ,  H01H47/00 ,  H01H47/22

Abstract: A control apparatus comprises a microcontroller, an auxiliary circuit, a delay module and a logical circuit; the microcontroller is connected to a first input end of the logical circuit via the auxiliary circuit and connected to a second input end of the logical circuit via the delay module, and an output end of the logical circuit is connected to a device to be controlled; if the microcontroller is reset in a process of outputting the closing control signal, a delay disabling signal becomes invalid, the delay module is enabled to output the closing control signal within a preset delay time, wherein the delay time is greater than or equal to a reset time. A power supply system is also provided to avoid a risk that an automobile suddenly loses power due to unexpected reset of the microcontroller.