Control method, device and system of lithium battery

[0069] The embodiment of the present invention provides a lithium battery management method, please refer to figure 1 , which is a schematic flowchart of Embodiment 1 of a management method for a lithium battery provided in an embodiment of the present invention.

[0070] The embodiment of the present invention is applied to a battery system including M battery management units and a battery management system, each battery management unit includes a battery module and a management module, and each battery module supplies power to a corresponding electric device, M is an integer greater than or equal to 2.

[0071] like figure 1 As shown, the lithium battery management method provided by the embodiment of the present invention includes the following steps:

[0072] S101, the battery management system receives the output parameters sent by each management module, the output parameters are collected by the management modules in each battery management unit, and the output paramete

[0109] The embodiment of the present invention provides a lithium battery management method, please refer to image 3 , which is a schematic flow chart of Embodiment 2 of a lithium battery management method provided by an embodiment of the present invention.

[0110] The embodiment of the present invention is applied to a battery system including M battery management units and a battery management system, each battery management unit includes a battery module and a management module, and each battery module supplies power to a corresponding electric device, M is an integer greater than or equal to 2.

[0111] like image 3 As shown, the lithium battery management method provided by the embodiment of the present invention includes the following steps:

[0112] S301. The management module in each battery management unit collects output parameters when the battery modules in each battery management unit supply power to corresponding electric devices.

[0113] Specifically, in the

[0137] Based on the lithium battery management method provided in the first embodiment above, the embodiment of the present invention further provides an embodiment of a device for realizing each step and method in the above method embodiment. Please refer to Figure 4 , which is a functional block diagram of the battery management system provided by the embodiment of the present invention. like Figure 4 As shown, the battery management system includes:

[0138] The receiving module 41 is used to receive the output parameters sent by the management modules in each battery management unit, the output parameters are collected by the management modules in each battery management unit, and the output parameters are the battery modules in each battery management unit. Output parameters when the device is powered;

[0139] The control module 42 is configured to control other battery management units to supply power to the electrical equipment corresponding to the faulty battery man