Battery management system with parallel connection of multiple BMS modules and realization method thereof
A technology of a battery management system and an implementation method, which is applied in the field of battery management systems with multiple BMS modules in parallel, can solve the problems that the battery management system cannot provide enough energy, the application of the battery management system is inflexible, and the battery management system has many types, etc. Effectiveness of data processing capability and efficiency, shortening development cycle, and improving security
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Embodiment 1
[0038] see figure 1 , a method 20 for implementing a battery management system in which multiple BMS modules are connected in parallel, the steps comprising:
[0039] S1. Connect multiple BMS modules in parallel, and set any one of the BMS modules as the main module, and the remaining BMS modules as sub-modules;
[0040] S2. The sub-module sends its own module data to the main module, and the main module receives the data of each sub-module, and processes the data of its own module and the data of the sub-modules.
[0041] In this embodiment, the steps of setting any one of the BMS modules in the step S1 as the main module, and the remaining BMS modules as sub-modules are specifically:
[0042] Use the ID setting unit of the BMS module to assign addresses to its own BMS modules, set one of the BMS modules as the main module, and set the other BMS modules as sub-modules.
[0043] The ID setting unit is specifically a multi-way dialer, and the multi-way dialer can set the main...
Embodiment 2
[0055] Except for the following technical features, the other technical features of this embodiment are the same as those of Embodiment 1. In the step S1, any one of the BMS modules is set as the main module, and the rest of the BMS modules are sub-modules. The bus sends corresponding addresses to each BMS module, and one of the BMS modules is set as the main module, and the other BMS modules are set as sub-modules.
[0056] Take the parallel connection of three BMS modules as an example: the host computer sets the address of one of the BMS modules to ID=000, and sets this BMS module as the main module, which is responsible for receiving the data of each sub-module and controlling the data of the main module and each sub-module. The data is processed. The remaining two BMS modules are set as sub-modules, and the IDs of the two sub-modules are 100 and 101 respectively, and each sub-module is responsible for sending its own data to the main module.
Embodiment 3
[0058] see figure 2 A battery management system 10 in which multiple BMS modules are connected in parallel includes: multiple BMS modules are connected in parallel, the BMS modules include a positive output 1 and a negative output 2, the positive outputs 1 of the multiple BMS modules are connected in sequence, and the multiple BMS modules are connected in sequence. The negative output 2 of the BMS module is connected in sequence. The positive output 1 and the negative output 2 are also externally connected with loads.
[0059] The BMS module also includes a CAN communication unit 3, the CAN communication unit 3 is connected to the load through the CAN bus, and the CAN communication units 3 of a plurality of the BMS modules are sequentially connected through the CAN bus; the BMS module also includes an ID setting A unit 4, the ID setting unit 4 is used to set the address of the BMS module. The load controls the charging and discharging of each BMS module.
[0060] The batte...
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