电池包和用电设备
By setting sealed battery housing compartments and electrical compartments in the battery pack, combined with electrical connection components and sealing rings, the problem of battery pack damage caused by thermal runaway or water ingress short circuits in the battery module is solved, achieving battery pack safety and power supply reliability, simplifying the structure and improving compactness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOMI EV TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
When a battery pack is subjected to external forces or other factors, it is prone to thermal runaway of the battery module or water ingress and short circuit, which can damage the entire battery pack and affect the normal operation of electrical equipment.
The design incorporates sealed gaps between battery compartments within the battery pack, as well as between the battery compartments and the electrical compartment. Electrical connections and seals between the battery modules and the electrical modules are achieved through electrical connection components and sealing rings, preventing the propagation of the effects of thermal runaway or water ingress short circuits.
It improves the safety of battery packs and electrical equipment, ensures that other modules can still supply power normally when some battery modules fail, reduces the risk of battery pack damage, simplifies the structure of the battery pack and improves its compactness, making it easier to place in electrical equipment.
Smart Images

Figure CN224520032U_ABST
Abstract
Claims
1. A battery pack, characterized by, The battery pack includes an electrical compartment, an electrical module, an electrical connection assembly, multiple battery housing compartments, and multiple battery modules; Each of the battery compartments contains a corresponding battery module, and the electrical module is housed in a corresponding electrical compartment. The plurality of battery modules and the electrical module are electrically connected through the electrical connection assembly. Wherein, there is a sealed interval between any two of the plurality of battery compartments, and a sealed interval between at least one of the plurality of battery compartments and the electrical compartment.
2. The battery pack of claim 1, wherein, A perforation is provided in the wall between the battery compartment and the electrical compartment; The electrical connection component passes through the via; The battery pack also includes a sealing ring for sealing the gap between the through hole and the electrical connection assembly.
3. The battery pack of claim 2, wherein, The electrical connection assembly includes a conductive post and an insulating sleeve, wherein the conductive post is used to electrically connect the battery module and the electrical module; The insulating sleeve is fitted over the outside of the conductive post; The insulating sleeve passes through the through hole, and a connecting flange is provided on the outer peripheral wall of the insulating sleeve. The connecting flange is used to connect to the bin wall. The sealing ring is disposed between the connecting flange and the bin wall and around the through hole, and / or the sealing ring is disposed between the outer peripheral wall of the insulating sleeve and the inner wall of the through hole.
4. The battery pack of claim 3, wherein, The connecting flange is provided with a weldable part; The weldable part is used to be welded to the silo wall.
5. The battery pack of claim 4, wherein, The weldable part is constructed as a ring and is located outside the sealing ring.
6. The battery pack of claim 3, wherein, The electrical connection assembly also includes a nut; The connecting flange is located at one end of the insulating sleeve outside the through hole, and the other end of the insulating sleeve outside the through hole is provided with an external thread section; The nut is threaded onto the external thread section to press the sealing ring between the insulating sleeve and the wall where the through hole is located.
7. The battery pack of any one of claims 1-6, wherein, The plurality of battery compartments correspond to the same electrical compartment, and there is a sealed gap between the plurality of battery compartments and the electrical compartment.
8. The battery pack of claim 7, wherein, The plurality of battery compartments includes at least two battery compartments arranged along a first direction, the first direction being the length direction or the width direction of the battery pack; In the first direction, the electrical compartment is opposite to the at least two battery compartments.
9. The battery pack of any one of claims 1-6, wherein, The battery pack includes a tray, a cover, and a partition beam; A receiving cavity is defined between the cover plate and the tray; The partition beam is used to divide the accommodating cavity into the electrical compartment and the plurality of battery accommodating compartments; The battery pack also includes a seal, a portion of which is disposed between the partition beam and the cover plate, and another portion of which is disposed between the edge of the tray and the cover plate.
10. The battery pack of claim 9, wherein, The partition beam includes a first partition beam and at least one second partition beam; The first partition beam is arranged along a first direction, and the second partition beam is arranged along a second direction and connected to the first partition beam, wherein the second direction intersects with the first direction; The first partition beam is used to divide the accommodating cavity into a first accommodating cavity and a second accommodating cavity arranged at intervals along a second direction; The at least one second partition beam divides the first accommodating cavity into a plurality of battery accommodating compartments spaced apart along a first direction; The second accommodating cavity includes the electrical compartment.
11. The battery pack according to any one of claims 1-6, characterized in that, The battery pack includes a tray and a cover. A receiving cavity is defined between the cover plate and the tray, the receiving cavity including the battery receiving compartment; The electrical compartment is located on the side of the cover plate away from the tray, or the electrical compartment is located on the tray.
12. The battery pack of claim 11, wherein, The battery pack also includes an electrical box disposed on the cover plate, the interior of which defines the electrical compartment.
13. The battery pack of any one of claims 1-6, wherein, The battery compartment is equipped with an explosion-proof valve or a vent valve, and / or the electrical compartment is equipped with a vent valve.
14. The battery pack of any one of claims 1-6, wherein, The battery modules are connected in series and / or in parallel.
15. An electrical device, characterized by Includes the main body of the device and the battery pack according to any one of claims 1-14; The battery pack is used to supply power to the main body of the device.