Battery pack, electrical device, and glue-filling device
By setting appropriately shaped potting sections on the battery pack's casing and cover, and employing a multi-stage potting and foaming method, the problem of insufficient adhesive strength of the foam was solved, thereby improving the mechanical strength and rigidity of the battery pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOMI EV TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-17
Smart Images
Figure CN224520043U_ABST
Abstract
Claims
1. A battery pack, characterized by, Including the casing, battery module, and potting structure; The outer casing includes a shell and a cover, which together enclose a receiving cavity, and the battery module and the potting structure are both disposed within the receiving cavity; The glue-filling structure includes a first glue-filling part and a second glue-filling part. The first glue-filling part is disposed in the cover body, and the second glue-filling part is disposed inside the housing. The first glue-filling part is adapted to be connected to the second glue-filling part after the cover body is assembled to the housing.
2. The battery pack of claim 1, wherein, The first dispensing part includes an annular dispensing connector, which is used to connect with the second dispensing part.
3. The battery pack of claim 2, wherein, The first dispensing section includes two first sub-dispensing sections arranged at intervals along a first direction and two second sub-dispensing sections arranged at intervals along a second direction; The two first sub-plastering parts are connected to the two second sub-plastering parts to form a ring; The first direction and the second direction intersect; Wherein, the first direction is adapted to be the same as the length direction of the vehicle, and the width of the first sub-glue filling part is greater than the width of the second sub-glue filling part.
4. The battery pack of claim 1, wherein, A hole is provided on the surface of the first dispensing part facing the second dispensing part.
5. The battery pack of any one of claims 1-4, wherein, The second potting section includes a plurality of sub-potting layers stacked and connected along the height direction of the battery pack.
6. The battery pack of claim 5, wherein, The second glue-filling section includes two third sub-glue-filling sections spaced apart along a first direction and two fourth sub-glue-filling sections spaced apart along a second direction; The third sub-plastering part is used to connect with the first sub-plastering part of the first glue-filling part, and the fourth sub-plastering part is used to connect with the second sub-plastering part of the first glue-filling part. The first direction and the second direction intersect.
7. The battery pack of claim 6, wherein, The first direction is adapted to be the same as the length direction of the vehicle, and the width of the third sub-glue filling part is greater than the width of the fourth sub-glue filling part; The height of the third sub-plastering section is A, and the height of each sub-plastering layer in the third sub-plastering section is B. The heights of A and B satisfy: 1 / 2A≤B≤2 / 3A, and / or, the height of the fourth sub-plastering section is C, and the height of each sub-plastering layer in the fourth sub-plastering section is D. The heights of C and D satisfy: 3 / 4C≤D≤C.
8. An electric device, characterized by It includes a device body and a battery pack according to any one of claims 1-7, the battery pack being used to power the device body.
9. A glue filling apparatus characterized by, For a battery pack according to any one of claims 1-7, the potting apparatus includes a potting body and a spray tube, the spray tube being connected to the potting body; the spray tube has a flow channel for the passage of adhesive liquid, a first spray nozzle communicating with the flow channel, and at least one second spray nozzle communicating with the flow channel. The first adhesive nozzle is configured to dispense adhesive towards the bottom of the receiving cavity, and the second adhesive nozzle is configured to dispense adhesive towards the side of the receiving cavity.
10. The dispensing apparatus according to claim 9, characterized in that, The glue dispensing body includes a glue outlet tube; The glue spray tube is movably connected to the glue outlet tube along the axial direction of the glue outlet tube, so that the side wall of the glue outlet tube can block or expose the second glue spray nozzle, the second glue spray nozzle being located on the side of the glue spray tube.
11. The dispensing apparatus according to claim 9, characterized in that, The glue spray tube has an end face away from the glue dispensing body, and the first glue spray nozzle is located on the end face; The second nozzle is located on the side of the adhesive spray tube.
12. The apparatus of claim 9, wherein, The glue dispensing body includes a glue outlet tube, and the glue spray tube is connected to the glue outlet tube, wherein the diameter of the first glue spray nozzle is set to be smaller than the inner diameter of the glue outlet tube.
13. The glue filling apparatus according to any one of claims 9-12, wherein The adhesive spray tube includes a tube body and an end cap; One end of the tube is connected to the glue-pouring body, and the other end of the tube is connected to the end cap; The end is provided with the first glue spray nozzle, and the tube body is provided with the flow channel and the second glue spray nozzle.
14. The apparatus of claim 13, wherein, The end cap includes an annular end cap; The diameter of the first adhesive nozzle defined by the inner peripheral wall of the annular end along its own axial direction is constant, or the diameter of the first adhesive nozzle defined by the inner peripheral wall of the annular end along its own adhesive discharge direction gradually decreases.