Lithium ion battery packaging shell and packaging structure

Abstract

The lithium ion battery packaging shell and packaging structure are applied to a shell body, a placement groove is dug in the top surface of the shell body, placement bottom plates are symmetrically arranged at the bottom of an inner cavity of the placement groove, a main driving mechanism is arranged in the middle of the bottom surface of the inner cavity of the placement groove, and auxiliary driving mechanisms are symmetrically arranged on the two sides of the main driving mechanism; limiting mechanisms are symmetrically arranged at the tops of the main driving mechanism and the auxiliary driving mechanism, the top of the shell body is connected with a packaging cover through a fixing mechanism, a stabilizing mechanism is arranged between the packaging cover and the shell body, and a sealing mechanism is arranged at the joint of the packaging cover and the shell body. According to the innovation of the sealing structure, a multi-layer sealing structure is adopted at the seam of the packaging shell and comprises a rubber sealing type clamping structure, a waterproof rubber strip and a sealing rubber strip, the sealing performance of the packaging shell is ensured through the multi-layer sealing structure, electrolyte leakage and external moisture invasion are prevented, and the safety of the battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium - ion batteries, and more specifically, to a lithium - ion battery packaging case and a packaging structure. Background Art

[0002] Due to advantages such as high energy density, long cycle life, and environmental friendliness, lithium - ion batteries are widely used in fields such as electric vehicles, energy storage systems, and consumer electronics. With the diversification of application scenarios and the improvement of performance requirements of lithium - ion batteries, the packaging structure of the battery has become an important factor affecting its safety, reliability, and service life.

[0003] Traditional lithium - ion battery packaging structures usually adopt metal cases or soft - pack packaging. Although they can meet basic packaging requirements, there are still some problems in actual applications:

[0004] 1. Insufficient sealing: The sealing performance of traditional packaging structures is poor, which easily leads to electrolyte leakage or external moisture intrusion, affecting battery performance.

[0005] 2. Most of the previous battery bodies and outer shells were integrally manufactured. They not only fit tightly with the battery, but also were quite inconvenient for disassembly, separation, and installation.

[0006] In view of this, a lithium - ion battery packaging case and a packaging structure are provided to overcome the above - mentioned defects. Summary of the Invention

[0007] In view of the problems in the related art, the present invention proposes a lithium - ion battery packaging case and a packaging structure to overcome the above - mentioned technical problems existing in the existing related technologies.

[0008] For this purpose, the specific technical solutions adopted by the present invention are as follows:

[0009] A lithium - ion battery packaging case and a packaging structure are applied to a housing body. A placement groove is dug on the top surface of the housing body. Placement bottom plates are symmetrically arranged at the bottom of the inner cavity of the placement groove. A main driving mechanism is arranged in the middle of the bottom surface of the inner cavity of the placement groove. Auxiliary driving mechanisms are symmetrically arranged on both sides of the main driving mechanism. Restricting mechanisms are symmetrically arranged on the top of the main driving mechanism and the auxiliary driving mechanisms. The top of the housing body is connected with a packaging cover through a fixing mechanism. A stabilizing mechanism is arranged between the packaging cover and the housing body. A sealing mechanism is arranged at the connection between the packaging cover and the housing body.

[0010] Preferably, the main driving mechanism includes a main driving groove, a bidirectional screw rod, a main driving block, and a self - locking motor. The main driving groove is dug in the middle of the bottom surface of the inner cavity of the placement groove. A bidirectional screw rod is arranged on the right side of the inner cavity of the main driving groove. The outer wall of the bidirectional screw rod is connected with a plurality of main driving blocks through reverse threads. The left side of the bidirectional screw rod is connected with a self - locking motor.

[0011] Preferably, the self-locking motor is arranged on the left side of the inner cavity of the main drive groove, and the self-locking motor is electrically connected to an external switch.

[0012] Preferably, the auxiliary drive mechanism includes an auxiliary drive groove and an auxiliary drive block. The auxiliary drive grooves are symmetrically dug on the front and rear sides of the bottom surface of the inner cavity of the placement groove, and an auxiliary drive block is slidably arranged in the auxiliary drive groove.

[0013] Preferably, the limiting mechanism includes a limiting plate and a rubber pad. The limiting plate is arranged on the tops of the auxiliary drive block and the main drive block, and a rubber pad is arranged on the output surface of the limiting plate.

[0014] Preferably, the fixing mechanism includes a sealed fixing edge block and a fixing edge groove. The sealed fixing edge block is fixedly arranged on the bottom surface of the encapsulation cover, the fixing edge groove is dug on the top surface of the housing body, and the inner wall size of the fixing edge groove matches the size of the sealed fixing edge block.

[0015] Preferably, the stabilizing mechanism includes stabilizing holes and stabilizing bolts. The stabilizing holes are respectively dug at the four corners of the top surface of the encapsulation cover and the four corners of the top surface of the housing body, and the stabilizing bolts are arranged in the stabilizing holes through threaded connection.

[0016] Preferably, the sealing mechanism includes a waterproof rubber strip and a sealing rubber strip. The waterproof rubber strip is adhesively arranged at the connection between the encapsulation cover and the housing body, and a sealing rubber strip is adhesively connected to the outer wall of the waterproof rubber strip.

[0017] The present utility model has the following beneficial effects:

[0018] Compared with the prior art, the lithium-ion battery encapsulation housing and the encapsulation structure:

[0019] Through the cooperation of multiple structures such as the main drive mechanism, the auxiliary drive mechanism, the limiting mechanism, the fixing mechanism, the stabilizing mechanism and the sealing mechanism:

[0020] 1. Innovation of the sealing structure: A multi-layer sealing structure is adopted at the joint of the encapsulation housing, including a rubber sealing and clamping structure, a waterproof rubber strip and a sealing rubber strip. The multi-layer sealing structure ensures the sealing performance of the encapsulation housing, prevents the leakage of electrolyte and the intrusion of external moisture, and improves the safety of the battery.

[0021] 2. Improvement of safety: The limiting structure can prevent the battery from moving in the housing, reduce the risks of short circuit, liquid leakage, etc. caused by vibration or impact, and enhance the overall safety.

[0022] 3. Strong adaptability: The adjustable design can adapt to batteries of different sizes, improve the versatility of the encapsulation housing, and reduce the production cost.

[0023] 4. Simplified maintenance: The adjustable design facilitates the installation and replacement of the battery, reducing maintenance time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is the front view of a lithium-ion battery encapsulation housing and an encapsulation structure according to an embodiment of the present invention;

[0026] Figure 2 is the internal view of the placement groove of a lithium-ion battery encapsulation housing and an encapsulation structure according to an embodiment of the present invention;

[0027] Figure 3 is the structural split view between the encapsulation cover and the housing body of a lithium-ion battery encapsulation housing and an encapsulation structure according to an embodiment of the present invention;

[0028] Figure 4 is the structural split view of the bottom of the placement groove of a lithium-ion battery encapsulation housing and an encapsulation structure according to an embodiment of the present invention;

[0029] Figure 5 is the enlarged view of the structure at A of a lithium-ion battery encapsulation housing and an encapsulation structure according to an embodiment of the present invention.

[0030] In the figure:

[0031] 1. Housing body; 2. Placement groove; 3. Placement bottom plate; 4. Main driving mechanism; 5. Auxiliary driving mechanism; 6. Limiting mechanism; 7. Fixing mechanism; 8. Encapsulation cover; 9. Stabilizing mechanism; 10. Sealing mechanism; 11. Main driving groove; 12. Bi-directional lead screw; 13. Main driving block; 14. Self-locking motor; 15. Auxiliary driving groove; 16. Auxiliary driving block; 17. Limiting plate; 18. Rubber pad; 19. Sealed fixing edge block; 20. Fixing edge groove; 21. Stabilizing hole; 22. Stabilizing bolt; 23. Waterproof rubber strip; 24. Sealing rubber strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Embodiment 1

[0036] As Figures 1-5 shown, a lithium-ion battery packaging shell and a packaging structure according to an embodiment of the present invention are applied to a shell body 1. A placement groove 2 is dug on the top surface of the shell body 1. Placement bottom plates 3 are symmetrically arranged at the bottom of the inner cavity of the placement groove 2. A main driving mechanism 4 is arranged in the middle of the bottom surface of the inner cavity of the placement groove 2. Auxiliary driving mechanisms 5 are symmetrically arranged on both sides of the main driving mechanism 4. Limiting mechanisms 6 are symmetrically arranged at the tops of the main driving mechanism 4 and the auxiliary driving mechanisms 5. The top of the shell body 1 is connected with a packaging cover 8 through a fixing mechanism 7. A stabilizing mechanism 9 is arranged between the packaging cover 8 and the shell body 1. A sealing mechanism 10 is arranged at the connection between the packaging cover 8 and the shell body 1.

[0037] In this embodiment, first, the lithium-ion battery is placed on the tops of the multiple placement bottom plates 3 arranged in the placement groove 2 and is located between multiple groups of limiting mechanisms 6. The main driving mechanism 4 is started through an external switch. The components in the main driving mechanism 4 are started and drive the limiting mechanisms 6 to move horizontally. When the limiting mechanisms 6 move horizontally, the bottom is assisted to move horizontally by multiple groups of auxiliary driving mechanisms 5 in a sliding manner. Driven by this, the limiting mechanisms 6 fit to one side of the lithium-ion battery. The multiple groups of limiting mechanisms 6 limit and fix the lithium-ion battery. Next, the components in the fixing mechanism 7 are engaged, so that the packaging cover 8 and the shell body 1 are hermetically connected by a clamping method, and through the connection of the components in the stabilizing mechanism 9, the connection between the shell body 1 and the packaging cover 8 is made more stable. Finally, the components in the sealing mechanism 10 are successively wound around the connection between the shell body 1 and the packaging cover 8 by an adhesive method to provide sealing and other protections.

[0038] Embodiment 2

[0039] The main driving mechanism 4 includes a main driving groove 11, a bidirectional lead screw 12, a main driving block 13 and a self-locking motor 14. The main driving groove 11 is dug in the middle of the inner bottom surface of the placing groove 2. A bidirectional lead screw 12 is arranged on the right side in the cavity of the main driving groove 11. A plurality of main driving blocks 13 are connected to the outer wall of the bidirectional lead screw 12 through reverse threads. The left side of the bidirectional lead screw 12 is connected to a self-locking motor 14;

[0040] The self-locking motor 14 is arranged on the left side in the cavity of the main driving groove 11, and the self-locking motor 14 is electrically connected to an external switch;

[0041] The auxiliary driving mechanism 5 includes an auxiliary driving groove 15 and an auxiliary driving block 16. The auxiliary driving grooves 15 are symmetrically dug on the front and rear sides of the inner bottom surface of the placing groove 2. An auxiliary driving block 16 is slidably arranged in the auxiliary driving groove 15;

[0042] The limiting mechanism 6 includes a limiting plate 17 and a rubber pad 18. The limiting plate 17 is arranged on the tops of the auxiliary driving block 16 and the main driving block 13. A rubber pad 18 is arranged on the output surface of the limiting plate 17;

[0043] Place the lithium-ion battery on the tops of a plurality of placing bottom plates 3 arranged in the placing groove 2 and located between a plurality of limiting plates 17. Start the self-locking motor 14 through an external switch. The self-locking motor 14 drives the bidirectional lead screw 12 to rotate. The outer wall of the bidirectional lead screw 12 drives a plurality of main driving blocks 13 to adjust in a similar direction through reverse threads. The main driving blocks 13 drive the limiting plate 17 on the top to move horizontally and fit against one side of the lithium-ion battery. When the limiting plate 17 is driven to move horizontally, the two sides at the bottom are assisted to drive by the sliding of the auxiliary driving block 16 in the auxiliary driving groove 15. A plurality of limiting plates 17 limit and fix the lithium-ion battery.

[0044] On the basis of Embodiment 1, further optimize the structure and function of the device. The intelligent control system includes a control panel. The control panel is electrically connected to and controls the electrical components in this case.

[0045] Embodiment Three

[0046] The fixing mechanism 7 includes a sealed fixing edge block 19 and a fixing edge groove 20. The sealed fixing edge block 19 is fixedly arranged on the bottom surface of the encapsulation cover 8. The fixing edge groove 20 is dug on the top surface of the housing body 1, and the inner wall size of the fixing edge groove 20 matches the size of the sealed fixing edge block 19;

[0047] The stabilizing mechanism 9 includes stabilizing holes 21 and stabilizing bolts 22. The stabilizing holes 21 are respectively dug at the four corners of the top surface of the encapsulation cover 8 and the four corners of the top surface of the housing body 1. The stabilizing bolts 22 are arranged in the stabilizing holes 21 through threaded connections;

[0048] The sealing mechanism 10 includes a waterproof rubber strip 23 and a sealing rubber strip 24. The waterproof rubber strip 23 is adhesively disposed at the connection between the encapsulation cover 8 and the housing body 1, and the sealing rubber strip 24 is adhesively connected to the outer wall of the waterproof rubber strip 23;

[0049] The encapsulation cover 8 is disposed on the top of the housing body 1. The sealed fixed edge block 19 fixedly connected to the bottom of the encapsulation cover 8 is engaged into the fixed edge groove 20, so that the encapsulation cover 8 and the housing body 1 are hermetically connected by an engaging manner. And the stable holes 21 on the housing body 1 and the encapsulation cover 8 are docked. The stable bolts 22 are inserted into the docked stable holes 21 by a threaded manner, making the connection between the housing body 1 and the encapsulation cover 8 more stable. Finally, the waterproof rubber strip 23 and the sealing rubber strip 24 are successively wound around the connection between the housing body 1 and the encapsulation cover 8 by an adhesive manner to provide protection such as sealing.

[0050] On the basis of Embodiment 1, the structure and function of the device are further optimized. The housing body 1 can adopt an aluminum alloy material, which has a low density, high strength, and excellent thermal conductivity, and can meet the heat dissipation requirements of high-performance batteries. At the same time, the aluminum alloy material also has strong corrosion resistance and can meet the usage requirements in different environments. And heat dissipation fins can be added. The design of the heat dissipation fins adopts a rectangular or trapezoidal structure with good heat dissipation effect. By reasonably optimizing the arrangement, spacing, and angle of the fins, it is ensured that heat can be quickly conducted from the battery surface to the external environment. The surface treatment of the fins adopts an anodizing technology, making it have good corrosion resistance and stronger heat dissipation effect.

[0051] In summary, by means of the above technical solutions of the present invention, when this device is in use, first place the lithium-ion battery on the tops of the plurality of placement bottom plates 3 provided in the placement groove 2 and located between the plurality of limiting plates 17. Start the self-locking motor 14 through an external switch. The self-locking motor 14 drives the bidirectional lead screw 12 to rotate. The outer wall of the bidirectional lead screw 12 drives a plurality of main driving blocks 13 to adjust in a similar direction through reverse threads. The main driving blocks 13 drive the limiting plates 17 on the top to move horizontally and fit against one side of the lithium-ion battery. And when the limiting plates 17 are driven to move horizontally, the two sides at the bottom are assisted to drive by the sliding of the auxiliary driving blocks 16 in the auxiliary driving grooves 15. The plurality of limiting plates 17 limit and fix the lithium-ion battery. Next, the encapsulation cover 8 is disposed on the top of the housing body 1. The sealed fixed edge block 19 fixedly connected to the bottom of the encapsulation cover 8 is engaged into the fixed edge groove 20, so that the encapsulation cover 8 and the housing body 1 are hermetically connected by an engaging manner. And the stable holes 21 on the housing body 1 and the encapsulation cover 8 are docked. The stable bolts 22 are inserted into the docked stable holes 21 by a threaded manner, making the connection between the housing body 1 and the encapsulation cover 8 more stable. Finally, the waterproof rubber strip 23 and the sealing rubber strip 24 are successively wound around the connection between the housing body 1 and the encapsulation cover 8 by an adhesive manner to provide protection such as sealing.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lithium-ion battery packaging case and a packaging structure, characterized in that, Applied to the housing body (1), a placement groove (2) is dug on the top surface of the housing body (1). At the bottom of the inner cavity of the placement groove (2), placement bottom plates (3) are symmetrically arranged. In the middle of the bottom surface of the inner cavity of the placement groove (2), a main driving mechanism (4) is arranged. On both sides of the main driving mechanism (4), auxiliary driving mechanisms (5) are symmetrically arranged. On the top of the main driving mechanism (4) and the auxiliary driving mechanisms (5), limiting mechanisms (6) are symmetrically arranged. The top of the housing body (1) is connected with a sealing cover (8) through a fixing mechanism (7). A stabilizing mechanism (9) is arranged between the sealing cover (8) and the housing body (1). A sealing mechanism (10) is arranged at the connection between the sealing cover (8) and the housing body (1).

2. The lithium-ion battery packaging case and packaging structure according to claim 1, characterized in that, The main driving mechanism (4) includes a main driving groove (11), a bidirectional lead screw (12), main driving blocks (13) and a self-locking motor (14). The main driving groove (11) is dug in the middle of the bottom surface of the inner cavity of the placement groove (2). On the right side of the inner cavity of the main driving groove (11), a bidirectional lead screw (12) is arranged. The outer wall of the bidirectional lead screw (12) is connected with a plurality of main driving blocks (13) through reverse threads. The left side of the bidirectional lead screw (12) is connected with a self-locking motor (14).

3. The lithium-ion battery packaging case and packaging structure according to claim 2, characterized in that, The self-locking motor (14) is arranged on the left side of the inner cavity of the main driving groove (11), and the self-locking motor (14) is electrically connected to an external switch.

4. A lithium-ion battery packaging case and a packaging structure according to claim 1, characterized in that, The auxiliary driving mechanism (5) includes auxiliary driving grooves (15) and auxiliary driving blocks (16). The auxiliary driving grooves (15) are symmetrically dug on the front and rear sides of the bottom surface of the inner cavity of the placement groove (2). Auxiliary driving blocks (16) are slidably arranged in the auxiliary driving grooves (15).

5. A lithium-ion battery packaging case and packaging structure according to claims 3-4, characterized in that, The limiting mechanism (6) includes a limiting plate (17) and a rubber pad (18). The limiting plate (17) is arranged on the top of the auxiliary driving blocks (16) and the main driving blocks (13). A rubber pad (18) is arranged on the output surface of the limiting plate (17).

6. A lithium-ion battery packaging case and a packaging structure according to claim 1, characterized in that, The fixing mechanism (7) includes a sealed fixing edge block (19) and a fixing edge groove (20). The sealed fixing edge block (19) is fixedly arranged on the bottom surface of the sealing cover (8). The fixing edge groove (20) is dug on the top surface of the housing body (1), and the inner wall size of the fixing edge groove (20) matches the size of the sealed fixing edge block (19).

7. A lithium-ion battery packaging case and packaging structure according to claim 1, characterized in that The stabilizing mechanism (9) includes stabilizing holes (21) and stabilizing bolts (22). The stabilizing holes (21) are respectively dug at the four corners of the top surface of the sealing cover (8) and the four corners of the top surface of the housing body (1). The stabilizing bolts (22) are arranged in the stabilizing holes (21) through threaded connection.

8. The lithium-ion battery packaging case and packaging structure according to claim 1, characterized in that The sealing mechanism (10) includes a waterproof rubber strip (23) and a sealing rubber strip (24). The waterproof rubber strip (23) is adhesively arranged at the connection between the sealing cover (8) and the housing body (1). A sealing rubber strip (24) is adhesively connected to the outer wall of the waterproof rubber strip (23).

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