Dual-Active-Bridge (DAB) converters, which have the advantages of high voltage transformation ratio, electrical isolation, easy to realize modular expansion, are widely used in various scenarios. And in order to realize high-power energy transmission with voltage and current stress reduced, multi-parallel structure converter has become a accepted solution. Focusing on two key indicators: dynamic response and sub-module power balance, we proposed a cooperative predictive control with power-balancing for input-series output-parallel (ISOP) DAB converters in this paper. Based on master-slave control, this strategy selects one DAB converter as the master module, controlling with constant voltage model predictive control (MPC) algorithm, and then takes its input voltage as the reference of other slave modules to achieve power balance. Finally, simulations are built to prove that the proposed strategy: (i) has excellent dynamic performance; (ii) can achieve power balancing effectively.