Packaging shell structure of solid-state battery
By introducing annular limit pads and insulating pads into the packaging housing structure of solid-state lithium batteries, and using the connection between bolts and support plates, the problem of insufficient shock resistance and inability to adjust the packaging structure of solid-state lithium batteries is solved, achieving higher safety and adaptability.
Patent Information
- Application Number
- CN202421373302.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing solid-state lithium battery packaging structure has insufficient shock resistance and cannot adjust the packaging structure according to the size of the battery cell, which poses safety risks.
A packaged housing structure for solid-state batteries is designed, and the fixation of the battery core and the internal space are adjusted by providing an annular limit pad inside the lower housing and filling the insulating pad in the upper housing, and connecting it with the threaded hole of the support plate through the second bolt.
It effectively improves the shock-proof performance of the battery cell, reduces damage caused by vibration, and can adjust the packaging structure according to the battery cell of different capacity, enhancing safety.
Smart Images
Figure CN222851530U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery packaging, and in particular relates to a packaging shell structure of a solid-state battery. Background Art
[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Solid-state lithium-ion batteries do not have the problem of gas production due to the reaction of electrolyte electrode materials; the possibility of overcharging causing lithium metal to deposit on the negative electrode and cause puncture short circuits is low; the high temperature resistance of solid electrolytes is far better than that of current electrolyte diaphragms. These characteristics make solid-state lithium-ion batteries much safer than liquid lithium-ion batteries.
[0003] The existing solid-state lithium battery packaging structure currently has insufficient shockproof performance. There is a certain gap between the battery core and the external shell. When the shell is subjected to a strong external force impact, the battery core may vibrate inside the shell, and the stability is poor. In addition, during the packaging process of existing solid-state lithium batteries, most of the battery cells of one capacity use a packaging shell of one size. When battery cells of different sizes need to be configured in the same shell, most of them are adjusted by padding the bottom, which may cause safety hazards, and the internal space of the shell cannot be adjusted according to the height of the battery core. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing solid-state battery packaging has insufficient shockproof performance, and the battery cell may be damaged by vibration when impacted by external force, and the size of the internal packaging structure cannot be adjusted according to needs to accommodate battery cells of different capacities.
[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a packaging shell structure of a solid-state battery, comprising a packaging shell, the packaging shell is composed of an upper shell and a lower shell that are buckled together, the edge of the upper shell is matched with the inner edge of the lower shell by multiple first bolts, the interior of the upper shell is filled with an insulating pad, a fixing plate is arranged below the insulating pad, and two pole ears passing through the insulating pad and the fixing plate are arranged in the middle of the upper shell; a limiting pad of an annular structure is arranged on the inner edge of the lower shell, the lower shell is slidably connected with a support plate on the inner side of the limiting pad, the battery core is located between the support plate and the fixing plate, a buffer pad is arranged below the support plate, the bottom four corners of the lower shell are matched with the bottom of the support plate by second bolts, and corresponding threaded holes are arranged at the bolts below the support plate.
[0006] As an improvement, a plurality of corresponding threaded seats are provided on the inner side of the lower shell at the locations of the plurality of first bolts, and the plurality of threaded seats are located on the inner side of the limiting pad.
[0007] As an improvement, the insulating pad, limiting pad and buffer pad are all made of rubber material, and the insulating pad is provided with a corresponding insulating sleeve at the pole ear. The top of the insulating pad is a well-shaped grid structure, and the bottom edge of the insulating pad is against the upper end surface of the limiting pad.
[0008] As an improvement, the fixing plate and the support plate on the side close to the battery core are both grid structures, and the fixing plate and the support seat are matched with the annular structure on the inner side of the limiting pad.
[0009] As an improvement, one end of the pole lug protrudes from the outer side of the upper shell, and a corresponding sealing ring is provided at the connection between the pole lug and the upper shell.
[0010] As an improvement, the limiting pad matches the height of the interior of the lower shell and fits against the inner wall of the lower shell.
[0011] As an improvement, an inwardly recessed guide groove is provided inside the lower shell at the second bolt, a fixing nut is provided on the side of the guide groove close to the threaded hole, the second bolt passes through the fixing nut and is connected to the threaded hole by threaded cooperation, and a sealing gasket is provided on the outside of the second bolt at the bottom of the guide groove.
[0012] As an improvement, the shape of the buffer pad matches that of the support plate, and a corresponding support block is provided on the outside of the threaded hole and the guide groove of the buffer pad.
[0013] The advantages of the utility model compared with the prior art are:
[0014] 1. The packaging shell structure protects the side of the battery core by setting an annular limit pad on the inner side of the lower shell, and limits the position of the fixing plate and the support plate on the upper and lower sides of the battery core, so as to effectively fix the battery core and reduce the damage caused by vibration of the battery core;
[0015] 2. The packaging shell structure is connected to the threaded hole at the bottom of the support plate by a second bolt at the bottom, so that the internal battery cell packaging can be fixed and the internal space size can be adjusted by rotating the threaded hole and the second bolt. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a solid-state battery packaging shell structure Figure 1 .
[0017] Figure 2The utility model is a solid-state battery packaging shell structure Figure 2 .
[0018] Figure 3 It is a cross-sectional three-dimensional structural diagram of the pole ear of the packaging shell structure of a solid-state battery of the utility model.
[0019] Figure 4 This is a cross-sectional three-dimensional structural diagram of the second bolt of a packaging shell structure of a solid-state battery of the utility model.
[0020] Figure 5 The utility model is an insulating pad and a fixing plate structure of a solid-state battery packaging shell structure Figure 1 .
[0021] Figure 6 The utility model is an insulating pad and a fixing plate structure of a solid-state battery packaging shell structure Figure 2 .
[0022] In the figure:
[0023] 1. Battery core; 2. Upper shell; 3. Lower shell; 4. Multiple first bolts; 5. Insulating pads; 6. Fixing plate; 7. Tabs; 8. Limiting pads; 9. Support plate; 10. Buffer pads; 11. Second bolts; 12. Threaded holes; 13. Multiple threaded seats; 14. Insulating sleeves; 15. Sealing rings; 16. Guide grooves; 17. Fixing nuts; 18. Sealing pads; 19. Support blocks DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0026] Embodiment 1:
[0027] As the instruction manual Figure 1-6As shown, a packaging shell structure of a battery cell 1 includes a packaging shell, which is formed by buckling an upper shell 2 and a lower shell 3. The edge of the upper shell 2 is matched with the inner edge of the lower shell 3 by a plurality of first bolts 4, and a plurality of corresponding threaded seats 13 are arranged on the inner side of the lower shell 3 at the plurality of first bolts 4. The interior of the upper shell 2 is filled with an insulating pad 5, and a fixing plate 6 is arranged below the insulating pad 5. Two pole ears 7 passing through the insulating pad 5 and the fixing plate 6 are arranged in the middle of the upper shell 2, one end of the pole ear 7 protrudes from the outer side of the upper shell 2, and a corresponding sealing ring 15 is arranged at the connection between the pole ear 7 and the upper shell 2.
[0028] Correspondingly, a limiting pad 8 of an annular structure is provided on the inner edge of the lower shell 3, the limiting pad 8 matches the height of the inside of the lower shell 3, and fits on the inner wall of the lower shell 3, a plurality of threaded seats 13 are located on the inner side of the limiting pad 8, the lower shell 3 is located on the inner side of the limiting pad 8 and is slidably connected with a support plate 9, the battery core 1 is located between the support plate 9 and the fixing plate 6, the fixing plate 6 and the support plate 9 are located on the side close to the battery core 1 and are both grid structures, and the fixing plate 6 and the support seat are matched with the inner annular structure of the limiting pad 8, a buffer pad 10 is provided below the support plate 9, and the bottom four corners of the lower shell 3 are fixed by second bolts 1 1 is matched and connected with the bottom of the support plate 9, and a corresponding threaded hole 12 is provided at the bolt below the support plate 9, and a guide groove 16 recessed inwardly is provided at the second bolt 11 inside the lower shell 3, and a fixing nut 17 is provided on the side of the guide groove 16 close to the threaded hole 12, and the second bolt 11 passes through the fixing nut 17 and is connected with the threaded hole 12 by threaded matching, and a sealing gasket 18 is provided at the bottom of the guide groove 16 on the outside of the second bolt 11, and the buffer pad 10 matches the shape of the support plate 9, and a corresponding support block 19 is provided on the outside of the threaded hole 12 and the guide groove 16.
[0029] Correspondingly, the insulating pad 5, the limiting pad 8 and the buffer pad 10 are all made of rubber material, and the insulating pad 5 is provided with a corresponding insulating sleeve 14 at the pole ear 7, and the top of the insulating pad 5 is a well-shaped grid structure, and the bottom edge of the insulating pad 5 is against the upper end surface of the limiting pad 8.
[0030] When the utility model is implemented specifically, the limiting pad 8 is placed inside the lower shell 3, and then the buffer pad 10, the support plate 9 and the battery core 1 are placed between the limiting pads 8 in sequence, the battery core 1 is electrically connected to the pole ear 7, and then the upper shell 2 is buckled with the lower shell 3, and the upper shell 2 and the lower shell 3 are fixedly connected through multiple threaded seats 13 by multiple first bolts 4; then, a second bolt 11 of a suitable length is selected according to the situation of the battery core 1, and the second bolt 11 is connected to the fixing nut 17 through a thread from the guide groove 16 at the bottom of the lower shell 3, and then connected to the threaded hole 12 at the bottom of the support plate 9 through a thread, and then the support plate 9 is pushed upward while fixing the position of the second bolt 11, and the battery core 1 is tightened on both sides, so as to achieve the purpose of fixing the battery core 1, and the second bolt 11 of a suitable length can be selected according to the size of the battery core 1 to achieve the fixation of battery cells 1 of different capacities.
[0031] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A packaging shell structure of a solid-state battery, comprising a packaging shell, wherein the packaging shell is formed by buckling an upper shell and a lower shell, and is characterized in that: The edge of the upper shell is connected to the inner edge of the lower shell by a plurality of first bolts, the interior of the upper shell is filled with an insulating pad, a fixing plate is arranged below the insulating pad, and two pole ears passing through the insulating pad and the fixing plate are arranged in the middle of the upper shell; A limiting pad of an annular structure is provided on the inner edge of the lower shell, and a support plate is slidably connected to the inner side of the limiting pad of the lower shell, and the battery core is located between the support plate and the fixed plate, and a buffer pad is provided below the support plate, and the four bottom corners of the lower shell are connected to the bottom of the support plate by second bolts, and corresponding threaded holes are provided at the bolts below the support plate.
2. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: A plurality of corresponding threaded seats are arranged at the locations of the plurality of first bolts on the inner side of the lower shell, and the plurality of threaded seats are located on the inner side of the limiting pad.
3. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: The insulating pad, limiting pad and buffer pad are all made of rubber material, and the insulating pad is provided with a corresponding insulating sleeve at the pole ear. The top of the insulating pad is a well-shaped grid structure, and the bottom edge of the insulating pad is against the upper end surface of the limiting pad.
4. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: The fixing plate and the support plate are both grid structures on the side close to the battery core, and the fixing plate and the support seat are matched with the annular structure on the inner side of the limiting pad.
5. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: One end of the pole ear protrudes from the outer side of the upper shell, and a corresponding sealing ring is arranged at the connection between the pole ear and the upper shell.
6. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: The limiting pad matches the height of the interior of the lower shell and fits on the inner wall of the lower shell.
7. The packaging shell structure of a solid-state battery according to claim 1, characterized in that: An inwardly recessed guide groove is provided inside the lower shell at the second bolt, a fixing nut is provided on the side of the guide groove close to the threaded hole, the second bolt passes through the fixing nut and is connected to the threaded hole by threaded cooperation, and a sealing gasket is provided on the outside of the second bolt at the bottom of the guide groove.
8. The packaging shell structure of a solid-state battery according to claim 7, characterized in that: The shape of the buffer pad matches that of the support plate, and a corresponding support block is arranged outside the threaded hole and the guide groove of the buffer pad.