6results about How to "Charging safety" patented technology

The utility model provides a battery pack charging system, and belongs to the technical field of battery pack charging. The battery pack charging system comprises a reference voltage module, a comparison module, a charging mode switching module, a charging control module and a voltage detection module, the reference end of the comparison module is connected with the reference voltage module, the output end of the comparison module is connected with the input end of the charging mode switching module, the output end of the charging mode switching module is connected with the control end of the charging control module, and the output end of the charging control module is connected with the battery pack; the input end of the voltage detection module is connected with the feedback end of the charging control module. The output end of the voltage detection module is connected with the input end of the comparison module. And the charging mode switching module is configured to switch the charging mode of the battery pack according to the electric signal output by the comparison module. The charging efficiency of the battery pack can be improved.

The application relates to the technical field of new energy automobile battery management, in particular to a battery management system voltage-boosting charging control method and device, equipment and a medium, wherein the method comprises the following steps: collecting output voltage, communication protocol version and output capacity information of a charging device, and collecting rated voltage and real-time state information of a power battery; determining whether to start a voltage-boosting charging mode according to the output voltage and the rated voltage; in response to the voltage-boosting charging mode, calculating a target charging voltage interval according to the real-time state information and the output capacity information, so as to lift the voltage input by the charging device to the target charging voltage interval; feeding back vehicle charging demand and power battery state to the charging device, and receiving operation state information returned by the charging device, so as to adjust the output current of the vehicle voltage-boosting module to follow the power battery state during the charging process, and complete smooth switching from constant-current charging to constant-voltage charging. Thus, the charging compatibility problem of 500V charging piles and 800V high-voltage platform vehicles is solved.

This invention proposes a real-time lithium plating detection method and device for lithium-ion batteries based on an equivalent circuit model. The method detects lithium plating reactions in lithium-ion batteries using an equivalent circuit model that integrates mechanistic reaction information. During battery charging, this method can automatically and in real-time detect lithium plating based on a lithium plating detection threshold set in offline experiments. This guides battery users to adjust their charging strategies, preventing the continued lithium plating reaction and effectively improving battery safety and lifespan. This method relies solely on the voltage characteristics of the lithium-ion battery, which can be accurately and frequently sampled in existing battery management systems. Furthermore, the simulation model used in this method is an equivalent circuit model, requiring relatively low computational power. Therefore, this method is applicable to existing battery management systems for real-time lithium plating detection and has strong practicality.

The application provides a method for charging temperature compensation of a charging battery by using NTC, which comprises the following steps: setting the maximum charging voltage at high temperature, normal temperature and low temperature, combining the feedback voltage and current of a charging control IC, and calculating the target resistance value of an upper voltage dividing network at each temperature; selecting NTC with a specific temperature coefficient and a nominal resistance value, constructing a composite network in parallel with a fixed resistance and then in series, determining the resistance values of R2 and R3 through iterative calculation so that the equivalent resistance of the network at a characteristic temperature approaches the target value, and connecting the network to a feedback loop to realize automatic temperature compensation of the charging voltage. The application can realize automatic adjustment of the charging voltage of the charging battery at different temperatures, improve the charging precision and safety, and prolong the service life of the battery.

The application provides a shore power supply box, and relates to the technical field of ship power supply. The direct-current power supply circuit in the shore power supply box comprises a first direct-current loop provided with a first circuit breaker, a second direct-current loop provided with a second circuit breaker and an interlocking mechanism; the first direct-current loop and the second direct-current loop are connected with the same direct-current power supply, and the direct-current voltages output by the first direct-current loop and the second direct-current loop are different; the interlocking mechanism is connected with the first circuit breaker and the second circuit breaker respectively to interlock and control the on-off of the first direct-current loop and the second direct-current loop, and the on-off states of the first circuit breaker and the second circuit breaker are different at the same time. The embodiment of the application can realize direct-current power supply through the first direct-current loop and the second direct-current loop, effectively meet the direct-current power supply demand of the ship, and effectively avoid the mutual interference of the first direct-current loop and the second direct-current loop due to simultaneous work in the mode of alternating work of the first direct-current loop and the second direct-current loop controlled by the interlocking mechanism, so that the safety of charging is ensured.

The utility model discloses a diode-based high-side split charging scheme, which belongs to the field of battery management systems and comprises a high-side split charging module and an anti-reverse module. According to the utility model, the charging state is controlled by using the high-side split charging module, and the reverse voltage is cut off by using the anti-reverse module, so that both safety and low cost are taken into account in a high-side split charging scene, and the cost is effectively controlled at the same time.