High-barrier lithium battery outer structure

Abstract

This invention provides a high-barrier lithium battery external structure, belonging to the field of battery technology. It includes an assembly platform and several battery bodies, as well as a barrier assembly unit and a connecting unit. The barrier assembly unit includes a cover box and an inner box. Several battery bodies are fixedly connected to the inner box, and the cover box covers the side of the inner box. A receiving chamber is provided between the inner box and the cover box. Several through holes are reserved on the inner box, and several heat-conducting plates are installed inside the inner box. This invention solves the problem that the external barrier casing of the battery requires many fasteners for tightening during assembly, making assembly and disassembly for maintenance cumbersome. Moreover, most fasteners are tightened and loosened one by one, which is not conducive to the assembly of the casing, resulting in increased cumbersomeness while enhancing barrier performance.

Description

Technical Field

[0001] This invention belongs to the field of battery technology, specifically relating to a high-barrier lithium battery external structure. Background Technology

[0002] A lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. During use, lithium batteries are subjected to mechanical abuse such as collisions, squeezing, and punctures, which can lead to structural deformation, internal short circuits, electrolyte leakage, and other malfunctions, resulting in serious consequences such as thermal runaway, combustion, and explosion. Therefore, lithium batteries are usually encased in boxes or enclosures to enhance their isolation from the surrounding environment and protect them.

[0003] However, the outer reinforced barrier casing of lithium batteries requires the use of many fasteners for tightening during assembly, which makes assembly and disassembly for inspection and maintenance cumbersome. Moreover, most of the fasteners are screwed on and off one by one, which is not conducive to the assembly of the casing. While strengthening the barrier, it is more complicated. Therefore, a high barrier lithium battery outer structure is proposed. Summary of the Invention

[0004] This invention provides a high-barrier lithium battery external structure, which aims to solve the problem that the external barrier casing of the battery requires a lot of fasteners for locking during assembly. This makes the assembly and disassembly for maintenance more complicated. Moreover, most of them are screwed on and off one by one, which is not conducive to the assembly of the casing. While improving the barrier, it makes the assembly more complicated.

[0005] This invention provides a high-barrier lithium battery external structure, comprising an assembly platform and several battery bodies, and further comprising a barrier assembly unit and a connecting unit. The barrier assembly unit includes a cover box and an inner box. Several battery bodies are fixedly connected to the inner box. The cover box covers the side of the inner box. A receiving chamber is provided between the inner box and the cover box. Several through holes are pre-drilled in the inner box. Several heat-conducting plates are installed inside the inner box, each protruding from the inner box through one of the through holes. Several through holes are pre-drilled in the cover box. The front and back sides of the lid box have several fastening openings, each of which is connected to several through holes. Each of the fastening openings has an expansion plate installed in it, and each of the expansion plates is connected to a insert plate. Each of the insert plates is fixedly connected to several through holes. Each of the heat-conducting plates has a wedge fixedly connected to its front and back sides. Each of the wedges is fitted with several insert plates. Each of the wedges has several receiving seats installed in it. Each receiving seat has an assembly chamber and a circular groove installed in it. The assembly chamber and the circular groove are connected to each other.

[0006] The connecting unit includes a disc body one and four traction bars. The disc body one and the four traction bars are all screwed into a circular groove. Disc bodies two are fixedly connected to each of the four traction bars. The four disc bodies two engage with the disc body one. A driving unit is installed in the assembly chamber. The driving unit is used to rotate the disc body one. An insertion hole adapted to the receiving seat is installed in the assembly table. A side chamber is installed in the insertion hole. The side chamber is used for the rotation and insertion of the four traction bars, thus achieving the goal of constraining and limiting the receiving seat in the insertion hole.

[0007] Furthermore, the driving unit includes an extension rod, the lower part of which is fixedly connected to the upper part of the disk body. The extension rod is screwed into the assembly chamber, and a linkage rod is fixedly connected to the upper part of the extension rod. The linkage rod is located in the assembly chamber, and a displacement stage is movably connected to the assembly chamber. A spiral beryllium copper wire is fixedly connected to the displacement stage, with the end of the spiral beryllium copper wire further away from the displacement stage fixedly connected to the assembly chamber. The linkage rod is connected to the displacement stage.

[0008] Furthermore, the linkage rod has a waist hole and a through opening that are connected to each other. A connecting rod is installed in the waist hole, the displacement platform is inserted into the through opening, and a connecting hole is reserved on the displacement platform. The connecting rod is fixedly connected in the connecting hole.

[0009] Furthermore, a pointing hole is reserved on the displacement platform, and a pointing rod is flexibly connected to the pointing hole. The pointing rod is fixed in the assembly chamber.

[0010] Furthermore, the upper part of the inner wall of the lid gradually decreases in height from the central area towards the edge, forming a sloping structure.

[0011] 6. The high-barrier lithium battery external structure according to claim 5, characterized in that: four protruding blocks are provided on the cover, each of the four protruding blocks has a pre-reserved connection port, and fasteners are installed in each of the connection ports; four threaded joints are fixedly connected to the inner box, and each of the four fasteners is threaded into the four threaded joints.

[0012] Furthermore, several connecting channels are reserved on several wedges, and protruding rods are installed on several insert plates, with each of the protruding rods being adapted to several connecting channels.

[0013] Furthermore, a traction plate is installed on the displacement platform.

[0014] Furthermore, a clearance groove is reserved on the displacement stage, which allows the linkage rod and the displacement stage to have sufficient range of motion for displacement.

[0015] Furthermore, the receiving seat is provided with an arc edge.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention achieves the protective assembly of the battery body by installing the isolation assembly unit, blocking damage from the surrounding impact, and ensuring that the battery body can also reduce the impact of moisture while dissipating heat.

[0018] 2. The present invention achieves the goal of isolating the assembly unit from the assembly table through the installation of the connecting unit, and the connection point uses mirror installation, so the assembly is stable. During the assembly, the four traction bars of the assembly table can achieve the goal of working together.

[0019] 3. By installing the drive unit, the present invention can achieve the purpose of rotating the disc body from the outside, thus achieving the simultaneous action of the four traction bars and maintaining the interlocking state, making the assembly and disassembly of the assembly unit on the assembly table convenient.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of the invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of an embodiment of the present invention;

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point X;

[0025] Figure 4 This is a schematic diagram of the inner box and heat-conducting plate structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the receiving seat, traction bar, and linkage bar according to an embodiment of the present invention;

[0027] Figure 6 Embodiments of the present invention Figure 5 Schematic diagram of the structure at point Y;

[0028] Figure 7 This is a schematic diagram of the structure of the receiving seat, traction bar, and linkage bar according to an embodiment of the present invention;

[0029] Figure 8 Embodiments of the present invention Figure 7 Schematic diagram of the structure at point U;

[0030] Figure 9 This is a schematic diagram of the assembly table structure according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the displacement stage structure according to an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the lower view structure according to an embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the lid and protruding block structure according to an embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of the inner box, receiving seat, and pointing hole structure according to an embodiment of the present invention;

[0035] Figure 14 This is a schematic diagram of the heat-conducting plate, expansion plate, and insertion plate according to an embodiment of the present invention;

[0036] Figure 15 This is a schematic diagram of the lower part of the disc body 1, the traction bar, and the disc body 2 according to an embodiment of the present invention;

[0037] Reference numerals: 12. Assembly platform; 13. Battery body; 14. Cover box; 15. Inner box; 16. Through hole one; 17. Heat-conducting plate; 18. Through hole two; 19. Fastening port; 120. Expansion plate; 121. Insert plate; 122. Wedge; 123. Receiving seat; 124. Assembly chamber; 125. Circular groove; 126. Disc one; 127. Traction bar; 128. Disc two; 129. Insert hole; 1 30. Side chamber; 131. Expansion rod; 132. Linkage rod; 133. Displacement stage; 134. Spiral beryllium copper wire; 135. Waist hole; 136. Through port; 137. Connecting rod; 138. Connecting hole; 139. Pointing hole; 140. Pointing rod; 141. Protruding block; 142. Fastener; 143. Connecting channel; 144. Protruding rod; 145. Traction plate; 146. Relief groove; 147. Arc edge. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Reference Figure 1-15This invention proposes a high-barrier lithium battery external structure, comprising an assembly platform 12 and several battery bodies 13, and further comprising a barrier assembly unit and a connecting unit. The barrier assembly unit includes a cover box 14 and an inner box 15. Several battery bodies 13 are fixedly connected to the inner box 15. The upper part of the inner wall of the cover box 14 gradually decreases in height from the central area to the edge, forming a sloping structure. After the surrounding water vapor flows into the cover box 14 and converges, it can be directed outward through this structure. The cover box 14 covers the side of the inner box 15. Four protruding blocks 141 are installed on the cover box 14, and each of the four protruding blocks 141 has a pre-reserved connecting port. Fasteners 142 are installed in several connecting ports. Four threaded joints are fixedly connected to the inner box 15. Firmware 142 is threaded into four threaded joints, achieving a secure connection between the cover box 14 and the inner box 15. A receiving chamber is provided between the inner box 15 and the cover box 14. Several through holes 16 are pre-drilled in the inner box 15, and several heat-conducting plates 17 are installed inside the inner box 15. Each heat-conducting plate 17 protrudes from the inner box 15 through several through holes 16. Several through holes 18 are pre-drilled in the cover box 14. Several fastening openings 19 are pre-drilled on both the front and back sides of the cover box 14, and each fastening opening 19 communicates with several through holes 18. Expansion plates 120 are installed in each of the fastening openings 19, and each expansion plate 120 is connected to a insert plate 121. Each insert plate 121 is fixedly connected to one of the through holes 18. In section 18, wedges 122 are fixedly connected to both sides of several heat-conducting plates 17. Each wedge 122 is attached to several insert plates 121. Several receiving seats 123 and several connecting channels 143 are reserved on several insert plates 122. Protruding rods 144 are installed on several insert plates 121, and each protruding rod 144 is adapted to several connecting channels 143. The lower part of the inner box 15 is fixedly connected to the receiving seat 123. The receiving seat 123 contains an assembly chamber 124 and a circular groove 125. The assembly chamber 124 and the circular groove 125 are interconnected. Through the installation of the isolation assembly unit, the assembly protection of several battery bodies 13 and the blocking effect are achieved. The isolation effect ensures that the assembly table 12 can also reduce the impact of moisture during the cooling process. The connecting unit includes a disc 126 and four traction bars 127. The disc 126 and the four traction bars 127 are all screwed into the circular groove 125. The four traction bars 127 are all fixedly connected to the disc 2 128. The outer ring of the disc 126 has a pre-reserved tooth, and the outer ring of the disc 2 128 has a pre-reserved tooth. The four disc 2 128 are all engaged with the disc 126. Through the installation of the connecting unit, the assembly unit and the assembly table 12 are isolated from each other. The connection point uses mirror installation, which makes the assembly stable. During the assembly of the assembly table 12, the four traction bars 127 can achieve the goal of working together.

[0040] The assembly chamber 124 houses the drive unit, which is used to rotate the disc 126. The assembly table 12 has an insertion hole 129 adapted to the receiving seat 123. A side chamber 130 is installed in the insertion hole 129, which is used for the rotation and insertion of the four traction bars 127. This achieves the goal of restraining and limiting the receiving seat 123 in the insertion hole 129. An arc edge 147 is installed on the receiving seat 123 to facilitate faster leakage of liquid from the receiving seat 123. The drive unit includes an extension rod 131, the lower part of which is fixedly connected to the upper part of the disc 126. An extension rod 131 is screwed into the assembly chamber 124. A linkage rod 132 is fixedly connected to the upper part of the extension rod 131. The linkage rod 132 is located inside the assembly chamber 124. A displacement stage 133 is movably connected to the assembly chamber 124. A spiral beryllium copper wire 134 is fixedly connected to the displacement stage 133. The end of the spiral beryllium copper wire 134 further from the displacement stage 133 is fixedly connected to the assembly chamber 124. The linkage rod 132 is connected to the displacement stage 133. Through the installation of the drive unit, the rotation of the disc 126 can be achieved from the outside, thus achieving the simultaneous action and interlocking state of the four traction bars 127. The assembly and disassembly of the assembly unit on the assembly table 12 are convenient. The linkage rod 132 has a pre-drilled waist hole 135 and a through opening 136, which are interconnected. A connecting rod 137 is installed in the waist hole 135. The displacement table 133 is inserted into the through opening 136. A connecting hole 138 is pre-drilled on the displacement table 133, and the connecting rod 137 is fixedly connected in the connecting hole 138. The connection structure between the linkage rod 132 and the displacement table 133 is exposed, ensuring that the linkage rod 132 can be pulled during the movement of the displacement table 133. A pointing hole is pre-drilled on the displacement table 133. 139, the pointing hole 139 is connected to the pointing rod 140, the pointing rod 140 is fixed in the assembly chamber 124, achieving the orientation guidance effect of the displacement table 133, and also helping to support the spiral beryllium copper wire 134, ensuring the smooth lengthening and shortening of the spiral beryllium copper wire 134. The displacement table 133 is reserved with a traction plate 145, making the displacement table 133 more prominent, which is conducive to the driving of the displacement table 133. The displacement table 133 is reserved with a relief groove 146, which allows the linkage rod 132 and the displacement table 133 to have sufficient range of motion for displacement.

[0041] The specific implementation method is as follows: During use, the barrier assembly unit containing the battery body 13 is assembled on the assembly table 12. During assembly, the displacement table 133 is pulled to one side by the traction plate 145, and the displacement table 133 is moved in the assembly chamber 124. During this period, the spiral beryllium copper wire 134 is compressed and shortened. Due to the connection rod 137 in the connection hole 138 on the displacement table 133, the linkage rod 132 will be pulled. When the linkage rod 132 is driven to form a rotating action, it can pull the extension rod 131 to rotate in the assembly chamber 124. Since the extension rod 131 is connected to the disk body 126, the extension rod 131 rotates. The traction disc 126 can rotate. Because several discs 128 and disc 126 form an interlocking relationship, the four traction bars 127 can rotate together in the circular groove 125. After all four traction bars 127 have rotated and entered the circular groove 125, they no longer drive the displacement platform 133. The movement range of the displacement platform 133 can be defined as the point at which the displacement platform 133 can no longer move to one side. This is because after the traction bars 127 rotate and enter the circular groove 125 and interact with the disc 126, they can no longer rotate. Therefore, at this stage, the displacement platform 133 cannot continue to be driven to one side. Then, ensuring the driving position of the displacement stage 133, the receiving seat 123 is placed into the insertion hole 129, and then the pressure on the traction plate 145 is released. Under the influence of the spiral beryllium copper wire 134, the displacement stage 133 moves to the other side to return to its original position. During the return of the displacement stage 133, it can pull the linkage rod 132 to move in the opposite direction. The reverse rotation of the disc 126 can achieve the reverse rotation of the traction bar 127. In this way, the traction bar 127 rotates into the side chamber 130, forming a fastening connection between the receiving seat 123 and the assembly table 12. This achieves the purpose of isolating the assembly unit from the assembly table 12. After the assembly is completed, during operation... The high temperature emitted by the battery body 13 is dissipated through the cooperation of the heat-conducting plate 17, the wedge 122, the insert plate 121, and the expansion plate 120. When water vapor moves into the cover box 14 and the inner box 15, the upper part of the inner wall of the cover box 14 gradually decreases from the central area to the edge to form a slope structure. Both the wedge 122 and the wedge can vent the gathered water vapor outward. When the battery body 13 needs to be repaired, it is only necessary to drive the displacement table 133 to one side to achieve the purpose of the traction bar 127 rotating into the circular groove 125 in the side chamber 130, ensuring the trend shape of the displacement table 133, and then remove all the isolation assembly units.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A high-barrier lithium battery external structure, comprising an assembly platform (12) and a plurality of battery bodies (13), characterized in that, It also includes a barrier assembly unit and a connection unit. The barrier assembly unit includes a cover box (14) and an inner box (15). Several battery bodies (13) are fixedly connected in the inner box (15). The cover box (14) covers the side of the inner box (15). A receiving chamber is provided between the inner box (15) and the cover box (14). Several through holes (16) are reserved on the inner box (15). Several heat-conducting plates (17) are installed in the inner box (15). Several heat-conducting plates (17) protrude from the inner box (15) through several through holes (16). Several through holes (18) are reserved on the cover box (14). Several fastening openings (19) are reserved on both the front and back sides of the cover box (14). Several fastening openings (19) are provided. Each of the openings (19) is connected to several through holes (18), and each of the several fastening openings (19) is equipped with an expansion plate (120). Each of the several expansion plates (120) is connected to a plug plate (121). Each of the several plug plates (121) is fixedly connected to several through holes (18). Each of the several heat-conducting plates (17) is fixedly connected to two sides with wedges (122). Each of the several wedges (122) is fitted with several plug plates (121). Each of the several wedges (122) has several receiving seats (123) reserved. Each receiving seat (123) is equipped with an assembly chamber (124) and a circular groove (125). The assembly chamber (124) and the circular groove (125) are connected to each other. The connecting unit includes a disc body (126) and four traction bars (127). The disc body (126) and the four traction bars (127) are screwed into a circular groove (125). Disc bodies (128) are fixedly connected to the four traction bars (127). The four disc bodies (128) are engaged with the disc body (126). A driving unit is installed in the assembly chamber (124) for rotating the disc body (126). A insertion hole (129) adapted to the receiving seat (123) is installed in the assembly table (12). A side chamber (130) is installed in the insertion hole (129) for rotating and probing the four traction bars (127). This achieves the goal of constraining and limiting the receiving seat (123) in the insertion hole (129).

2. The high-barrier lithium battery external structure according to claim 1, characterized in that: The driving unit includes an extension rod (131), the lower part of which is fixedly connected to the upper part of the disk body (126). The extension rod (131) is screwed into the assembly chamber (124). The upper part of the extension rod (131) is fixedly connected to a linkage rod (132), which is located in the assembly chamber (124). The assembly chamber (124) is movably connected to a displacement stage (133). The displacement stage (133) is fixedly connected to a spiral beryllium copper wire (134). The end of the spiral beryllium copper wire (134) further away from the displacement stage (133) is fixedly connected in the assembly chamber (124). The linkage rod (132) and the displacement stage (133) are connected.

3. The high-barrier lithium battery external structure according to claim 2, characterized in that: The linkage rod (132) has a waist hole (135) and a through opening (136) pre-reserved on it. The waist hole (135) and the through opening (136) are connected to each other. A connecting rod (137) is installed in the waist hole (135). The displacement platform (133) is inserted into the through opening (136). A connecting hole (138) is pre-reserved on the displacement platform (133). The connecting rod (137) is fixedly connected in the connecting hole (138).

4. The high-barrier lithium battery external structure according to claim 3, characterized in that: The displacement stage (133) has a pre-reserved pointing hole (139), and a pointing rod (140) is flexibly connected in the pointing hole (139). The pointing rod (140) is fixed in the assembly chamber (124).

5. The high-barrier lithium battery external structure according to claim 4, characterized in that: The upper part of the inner wall of the lid (14) gradually decreases in height from the central area toward the edge to form a sloping structure.

6. The high-barrier lithium battery external structure according to claim 5, characterized in that: The cover box (14) is provided with 4 protruding blocks (141), each of the 4 protruding blocks (141) has a reserved connection port, and fasteners (142) are installed in several of the connection ports. The inner box (15) is fixedly connected with 4 threaded joints, and each of the 4 fasteners (142) is threaded into the 4 threaded joints.

7. The high-barrier lithium battery external structure according to claim 6, characterized in that: Several connecting channels (143) are reserved on several wedges (122), and protruding rods (144) are installed on several insert plates (121). Each of the protruding rods (144) is adapted to several connecting channels (143).

8. The high-barrier lithium battery external structure according to claim 7, characterized in that: A traction plate (145) is installed on the displacement stage (133).

9. The high-barrier lithium battery external structure according to claim 8, characterized in that: The displacement stage (133) has a pre-reserved clearance groove (146), which allows the linkage rod (132) and the displacement stage (133) to have sufficient range of motion for displacement.

10. The high-barrier lithium battery external structure according to claim 9, characterized in that: An arc edge (147) is installed on the receiving seat (123).

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