Battery pack framework and vehicle

By designing parallel and series battery pack structures in the battery pack architecture, and combining contactors and fuses, the problems of high cost of electrical components and single charging mode caused by voltage differences were solved, achieving charging compatibility and cost-effectiveness of the battery pack architecture, and improving the reliability and safety of the vehicle.

CN224447489UActive Publication Date: 2026-07-03SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521296499.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-23
Publication Date
2026-07-03
Estimated Expiration
2035-06-23

AI Technical Summary

Technical Problem

The voltage difference between existing 400V and 800V battery pack architectures leads to high costs of electrical components and a single charging mode. The 800V battery pack architecture has high development costs, low cost-effectiveness, and a single charging mode.

Method used

Design a battery pack architecture including a first battery pack and a second battery pack, connected in parallel or series, with a control circuit through a contactor and a fuse device to support charging at multiple voltages, an auxiliary power interface and a controller interface, matching low-power electrical components, and utilizing an on-board charger and an AC charging interface to ensure the normal operation of the power modules.

Benefits of technology

The battery pack architecture achieves good charging compatibility, low cost, and high application reliability. It can operate normally under different voltages, reducing the cost of electrical components, improving vehicle safety and reliability, and shortening charging time.

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Abstract

The utility model relates to the technical field of batteries, and provides a battery pack framework and a vehicle. The battery pack framework comprises a power module, a charging interface and a controller interface, the charging interface and the controller interface are connected with the power module, and the power module comprises a first battery pack, a second battery pack and a first contactor connected between the positive electrode of the first battery pack and the positive electrode of the second battery pack. The second contactor is connected between the negative electrode of the first battery pack and the positive electrode of the second battery pack, the third contactor is connected between the negative electrodes of the first battery pack and the second battery pack, and the first contactor, the second contactor and the third contactor are controlled to be connected and disconnected. The first battery pack and the second battery pack can be controlled to be switched between a parallel connection state and a series connection state. According to the battery pack framework, the two battery packs are arranged, the application reliability is high, when one battery pack breaks down, the other battery pack can still work, parallel charging and series charging are supported at the same time, and the charging compatibility is good.
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