A battery system includes: a battery pack including a plurality of battery cells; and a battery management system for setting numbers to the battery cells by measuring cell voltages of the respective battery cells at a wake-up time, detecting a maximum cell voltage and a minimum cell voltage by periodically measuring the cell voltage of the respective battery cells after the wake-up, comparing the minimum cell voltage and the cell voltage of at least one first diagnosis target battery cell, comparing the maximum cell voltage and the cell voltage of at least one second diagnosis target battery cell, and diagnosing whether the diagnosis target battery cell is abnormal according to results of the comparison.

A measurement arrangement for determining a complex impedance of a first electrical component, wherein the measurement arrangement comprises the first component and a measuring unit, which is coupled to the first component and adapted to determine the complex impedance of the first component. The measurement arrangement comprises at least one second electrical component, which is arranged with the first component in a parallel circuit, which is hooked up in parallel with the measuring unit, wherein the parallel circuit comprises at least one switching device by which an electrical connection between the first and second component can be broken, and wherein the measurement arrangement is designed to temporarily break the electrical connection between the first component and the second component by the associated switching device in order to determine the first complex impedance of the first component.

A forced discharge test apparatus includes a heating circuit; a discharge circuit; a temperature sensor; and a controller. When the controller receives a test command indicating a test resistance and a test temperature, the controller outputs a first control signal to the heating circuit to increase the temperature of a battery cell. The controller outputs a second control signal to the discharge circuit to discharge the battery cell when the temperature of the battery cell reaches the set test temperature. The controller determines that the test temperature is valid with respect to the test resistance when the temperature of the battery cell is equal to or lower than the upper temperature limit at a time point at which a predetermined heating time has passed from a time point when the first control signal is outputted.

The voltage-measuring device is adapted to perform voltage measurements on a laminate assembly formed of separators and of at least one membrane electrode assembly stacked to form one or more electrochemical cells. It includes two measuring plates on which are distributed a plurality of electrical contacts spaced apart from each other and electrically insulated from each other, the measuring plates being configured to be arranged on either side of the laminate assembly, the measuring face of each measuring plate being applied against a respective separator in such a way that the electrical contacts located on this measuring face are in contact with the separator.

The voltage-measuring device is adapted to perform voltage measurements on a laminate assembly formed of separators and of at least one membrane electrode assembly stacked to form one or more electrochemical cells. It includes two measuring plates on which are distributed a plurality of electrical contacts spaced apart from each other and electrically insulated from each other, the measuring plates being configured to be arranged on either side of the laminate assembly, the measuring face of each measuring plate being applied against a respective separator in such a way that the electrical contacts located on this measuring face are in contact with the separator.

The present disclosure discloses an uncertain noisy filtering-based fault diagnosis method for a power battery management system and belongs to the field of power battery fault diagnosis. The method comprises: establishing an electro-thermal coupling model of a power battery system; extending an output vector of the system according to a state constraint of a power battery, and expanding a state vector of the system according to a fault of the power battery system to obtain an augmented system of the power battery system; obtaining an estimation interval of a power battery sensor fault by using a zonotope Kalman filtering method; judging whether the power battery management system has a fault according to upper and lower bounds of fault estimation, and if a fault occurs, determining a fault type and a fault time according to a result. Compared with an existing fault diagnosis method for a system without a state constraint, the present application solves the problem of fault diagnosis of a system with a state constraint by extending the state constraint of the system to the system output vector.

The present disclosure discloses an uncertain noisy filtering-based fault diagnosis method for a power battery management system and belongs to the field of power battery fault diagnosis. The method comprises: establishing an electro-thermal coupling model of a power battery system; extending an output vector of the system according to a state constraint of a power battery, and expanding a state vector of the system according to a fault of the power battery system to obtain an augmented system of the power battery system; obtaining an estimation interval of a power battery sensor fault by using a zonotope Kalman filtering method; judging whether the power battery management system has a fault according to upper and lower bounds of fault estimation, and if a fault occurs, determining a fault type and a fault time according to a result. Compared with an existing fault diagnosis method for a system without a state constraint, the present application solves the problem of fault diagnosis of a system with a state constraint by extending the state constraint of the system to the system output vector.

A battery monitoring system, for monitoring condition of a plurality of batteries, includes first and second pluralities of battery testers each coupled to a storage battery stored at a respective first and second storage location The plurality of battery testers including test circuitry configured to test a storage battery and to generate test data, a memory configured to store battery tester identification information, and communication circuitry configured to transmit the test data and the identification information over a wireless communication medium. A gateway includes wireless communication circuitry configured to receive test data and battery tester identification information from the plurality of battery testers and further includes cloud communication circuitry configured to communicate the test data and battery tester identification information to a cloud facility The cloud facility includes communication circuitry configured to receive the test data from the gateway, a report output configured to report the test data, and a database which links battery tester identification information with battery tester location information.

A battery monitoring system, for monitoring condition of a plurality of batteries, includes first and second pluralities of battery testers each coupled to a storage battery stored at a respective first and second storage location The plurality of battery testers including test circuitry configured to test a storage battery and to generate test data, a memory configured to store battery tester identification information, and communication circuitry configured to transmit the test data and the identification information over a wireless communication medium. A gateway includes wireless communication circuitry configured to receive test data and battery tester identification information from the plurality of battery testers and further includes cloud communication circuitry configured to communicate the test data and battery tester identification information to a cloud facility The cloud facility includes communication circuitry configured to receive the test data from the gateway, a report output configured to report the test data, and a database which links battery tester identification information with battery tester location information.

An electronic battery tester or battery charger for testing or charging a storage battery including electrical connectors configured to electrically couple to a terminals of the storage battery. Circuitry couples to the electrical connectors and is configured to test or charge the storage battery. An input signal is received related to a battery which is suitable for use with the vehicle.