Lithium sub-battery false cover connection structure
By introducing structures such as metal supports, mounting blocks, and weld grooves into the dummy cap of lithium-ion batteries, combined with a positioning mechanism, the problems of dummy cap detachment and positioning were solved, achieving a stable connection of the dummy cap and a high-yield welding rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PKCELL BATTERY CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-24
AI Technical Summary
The existing lithium-thionyl chloride battery caps are prone to falling off during installation and are not easily aligned with the positive terminal post, resulting in a lower production yield.
The structure employs metal supports, mounting blocks, metal blocks, and welding grooves, combined with a positioning mechanism. Through the cooperation of sliding rods and springs, it ensures a stable connection between the positive terminal post and the dummy cover, and the welding grooves secure the battery casing and the dummy cover.
It effectively prevents the dummy cap from falling off, improves the pass rate during welding, ensures the concentric positioning of the positive terminal and the dummy cap, and improves production efficiency.
Smart Images
Figure CN224554474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium-ion battery dummy cover technology, and in particular to the connection structure of lithium-ion battery dummy cover. Background Technology
[0002] Lithium thionyl chloride (Li / SOCl2) batteries are the highest energy density batteries in practical applications. They are non-rechargeable and have a specific energy of up to 590 Wh / kg and 1100 Wh / dm. This highest specific energy value is achieved by large-capacity, low-discharge-rate, large-size batteries. Li / SOCl2 batteries are manufactured in a wide variety of sizes and structures, with capacities ranging from cylindrical carbon-packed and wound electrode structures as low as 400 mAh to square batteries up to 10000 Ah, as well as many special sizes and structures to meet special requirements.
[0003] Existing lithium-ion battery dummy caps are relatively simple to install, but they may fall off during use. Furthermore, existing lithium-ion battery dummy caps are not easily aligned with the positive terminal of the battery, which may lead to an increase in scrap during production and a decrease in the pass rate. Therefore, a lithium-ion battery dummy cap connection structure is needed. Utility Model Content
[0004] The purpose of this invention is to provide a dummy cap connection structure for lithium-ion batteries to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium-ion battery dummy cover connection structure, including a battery shell, a battery body fixedly installed inside the battery shell, an mounting plate fixedly installed on the upper surface of the battery body, a positive electrode post fixedly installed inside the battery body, a metal support fixedly installed on the positive electrode post, an mounting block fixedly installed on the top of the metal support, a dummy cover fixedly installed on the mounting block, a metal block fixedly installed on the upper surface of the dummy cover, the positive electrode post slidably installed inside the metal block, and a positioning mechanism provided on the upper surface of the mounting plate.
[0006] Preferably, a limiting sleeve is fixedly installed on the upper surface of the mounting plate, and a sliding rod is fixedly installed on the bottom of the dummy cover, the sliding rod being slidably installed inside the limiting sleeve.
[0007] Preferably, the battery casing and the dummy cover are provided with welding grooves, and there are multiple welding grooves.
[0008] Preferably, an insulating block is fixedly installed inside the mounting plate, and the positive electrode post is fixedly installed inside the insulating block.
[0009] Preferably, the positioning mechanism includes a mounting strip fixedly mounted on the upper surface of the mounting plate, a rotating rod fixedly mounted inside the mounting strip, a first rotating block rotatably mounted on the rotating rod, a first positioning block fixedly mounted on the top of the first rotating block, a first support block fixedly mounted on the first positioning block, a first spring fixedly mounted on the bottom of the first support block, the other end of the first spring fixedly mounted on the upper surface of the mounting strip, and a first sliding strip fixedly mounted on the top of the first positioning block.
[0010] Preferably, a second rotating block is rotatably mounted on the rotating rod, a second positioning block is fixedly mounted on the top of the second rotating block, a second support block is fixedly mounted on the second positioning block, a second spring is fixedly mounted on the bottom of the second support block, the other end of the second spring is fixedly mounted on the upper surface of the mounting strip, and a second sliding strip is fixedly mounted on the top of the second positioning block.
[0011] Preferably, a connecting block is fixedly installed at the bottom of the dummy cover, and a locking block is fixedly installed at the bottom of the connecting block.
[0012] The beneficial effects of this utility model are:
[0013] In this utility model, by setting up structures such as metal support, mounting block, metal block and welding groove, the metal support can further stabilize the connection between the positive terminal post and the dummy cover, and the welding groove can facilitate welding the battery shell and the dummy cover together to prevent the dummy cover from falling off from the battery shell. This setting can fix the dummy cover inside the battery shell and prevent the dummy cover from falling off from the battery shell and affecting its use.
[0014] In this invention, by setting up a positioning mechanism, the slide rod is inserted into the limiting sleeve, the metal support sleeve is inserted into the positive electrode post, and the locking block presses against the first slide bar and the second slide bar. Due to the setting of the first spring and the second spring, the locking block will be positioned between the first positioning block and the second positioning block. This setting can position the positive electrode post and the false cover, which can improve the pass rate during welding. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the lithium-ion battery dummy cover connection structure proposed in this utility model.
[0016] Figure 2 This is a cross-sectional view of the lithium-ion battery dummy cover connection structure proposed in this utility model.
[0017] Figure 3 This is a schematic diagram of the metal support and mounting block of the lithium-ion battery dummy cover connection structure proposed in this utility model.
[0018] Figure 4 This is a schematic diagram of the first rotating block, the second rotating block, and other structures of the lithium-ion battery dummy cover connection structure proposed in this utility model.
[0019] In the diagram: 1. Battery casing; 2. Battery body; 3. Mounting plate; 4. Positive terminal post; 5. Metal support sleeve; 6. Mounting block; 7. False cover; 8. Limiting sleeve; 9. Sliding rod; 10. Metal block; 11. Positioning mechanism; 12. Weld groove; 13. Insulating block; 111. Mounting strip; 112. Rotating rod; 113. First rotating block; 114. First positioning block; 115. First support block; 116. First spring; 117. First sliding bar; 118. Second rotating block; 119. Second positioning block; 1110. Second support block; 1111. Second spring; 1112. Second sliding bar; 1113. Connecting block; 1114. Locking block. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example:
[0022] like Figure 1-4 As shown, this embodiment provides a lithium-ion battery dummy cover connection structure, including a battery shell 1, a battery body 2 fixedly installed inside the battery shell 1, an mounting plate 3 fixedly installed on the upper surface of the battery body 2, a positive electrode post 4 fixedly installed inside the battery body 2, a metal support 5 fixedly installed on the positive electrode post 4, an mounting block 6 fixedly installed on the top of the metal support 5, a dummy cover 7 fixedly installed on the mounting block 6, a metal block 10 fixedly installed on the upper surface of the dummy cover 7, the positive electrode post 4 slidably installed in the metal block 10, a positioning mechanism 11 is provided on the upper surface of the mounting plate 3, a limiting sleeve 8 is fixedly installed on the upper surface of the mounting plate 3, a sliding rod 9 is fixedly installed on the bottom of the dummy cover 7, the sliding rod 9 slidably installed in the limiting sleeve 8, welding grooves 12 are opened on the battery shell 1 and the dummy cover 7, and there are multiple welding grooves 12. An insulating block 13 is fixedly installed inside the mounting plate 3, and the positive electrode post 4 is fixedly installed inside the insulating block 13.
[0023] The metal support 5 covers the insulating block 13 and is welded to the positive terminal 4. It is also fixedly installed on the mounting block 6, which can further stabilize the connection between the positive terminal 4 and the dummy cover 7. The metal block 10 can protect the positive terminal 4 and can also serve as a conductive carrier to connect with other components. The welding groove 12 can easily weld the battery casing 1 and the dummy cover 7 together to prevent the dummy cover 7 from falling off from the battery casing 1. This setting can fix the dummy cover 7 inside the battery casing 1 and prevent it from falling off and affecting its use. The slide rod 9 is inserted into the limiting sleeve 8, and the metal support 5 is inserted into the positive terminal 4. The positioning mechanism 11 can connect and position the positive terminal 4 and the dummy cover 7, which can improve the pass rate during welding.
[0024] In this embodiment of the utility model, specifically, the positioning mechanism 11 includes a mounting strip 111 fixedly mounted on the upper surface of the mounting plate 3. A rotating rod 112 is fixedly mounted inside the mounting strip 111. A first rotating block 113 is rotatably mounted on the rotating rod 112. A first positioning block 114 is fixedly mounted on the top of the first rotating block 113. A first support block 115 is fixedly mounted on the first positioning block 114. A first spring 116 is fixedly mounted on the bottom of the first support block 115. The other end of the first spring 116 is fixedly mounted on the upper surface of the mounting strip 111. The top of the first positioning block 114 is fixedly mounted with... There is a first slide bar 117, a second rotating block 118 is rotatably mounted on the rotating rod 112, a second positioning block 119 is fixedly mounted on the top of the second rotating block 118, a second support block 1110 is fixedly mounted on the second positioning block 119, a second spring 1111 is fixedly mounted on the bottom of the second support block 1110, the other end of the second spring 1111 is fixedly mounted on the upper surface of the mounting strip 111, a second slide bar 1112 is fixedly mounted on the top of the second positioning block 119, a connecting block 1113 is fixedly mounted on the bottom of the false cover 7, and a locking block 1114 is fixedly mounted on the bottom of the connecting block 1113.
[0025] To position the positive terminal post 4 and the dummy cover 7, the slide rod 9 is inserted into the limiting sleeve 8, and the metal support sleeve 5 is inserted into the positive terminal post 4. The locking block 1114 presses the first slide bar 117, causing the first positioning block 114 to rotate. The rotation of the first positioning block 114 causes the first rotating block 113 to rotate on the rotating rod 112. The first positioning block 114 also causes the first support block 115 to press the first spring 116. At the same time, the first positioning block 114 presses the second slide bar 1112, and the second slide bar 1112 causes the second positioning block 119 to rotate. The rotation of the second positioning block 119 causes the second rotating block 118 to rotate on the rotating rod 112. The first positioning block 114 also causes the second support block 1110 to squeeze the second spring 1111. Due to the setting of the first spring 116 and the second spring 1111, the locking block 1114 will be positioned between the first positioning block 114 and the second positioning block 119. Then, spot welding is performed on the welding groove 12 to fix the dummy cover 7 on the positive electrode post 4. This setting can position the positive electrode post 4 and the dummy cover 7, which can improve the pass rate during welding.
[0026] Working principle: In use, the slide bar 9 is inserted into the limiting sleeve 8, and the metal support sleeve 5 is inserted into the positive terminal post 4. The locking block 1114 presses the first slide bar 117, causing the first positioning block 114 to rotate. The rotation of the first positioning block 114 causes the first rotating block 113 to rotate on the rotating rod 112. The first positioning block 114 also causes the first support block 115 to press the first spring 116. At the same time, the first positioning block 114 presses the second slide bar 1112, causing the second slide bar 1112 to rotate. The rotation of the second positioning block 119 causes the second rotating block 118 to rotate on the rotating rod 112. The first positioning block 114 also causes the second support block 1110 to press the second spring 1111. Due to the setting of the first spring 116 and the second spring 1111, the locking block 1114 will press the first spring 1111. Block 1114 is positioned between the first positioning block 114 and the second positioning block 119. Then, spot welding is performed on the welding groove 12 to fix the dummy cover 7 on the positive terminal post 4. This setting can position the positive terminal post 4 and the dummy cover 7, which can improve the pass rate of welding. The metal support 5 covers the insulating block 13 and is welded to the positive terminal post 4. At the same time, it is fixedly installed on the mounting block 6, which can further stabilize the connection between the positive terminal post 4 and the dummy cover 7. The setting of the metal block 10 can protect the positive terminal post 4 and can also serve as a conductive carrier for connection with other components. The setting of the welding groove 12 can facilitate welding the battery casing 1 and the dummy cover 7 together, preventing the dummy cover 7 from falling off from the battery casing 1. This setting can fix the dummy cover 7 inside the battery casing 1, preventing the dummy cover 7 from falling off from the battery casing 1 and affecting its use.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A lithium-ion battery dummy cover connection structure, comprising a battery casing (1), characterized in that: A battery body (2) is fixedly installed inside the battery casing (1). An mounting plate (3) is fixedly installed on the upper surface of the battery body (2). A positive terminal post (4) is fixedly installed inside the battery body (2). A metal support (5) is fixedly installed on the positive terminal post (4). An mounting block (6) is fixedly installed on the top of the metal support (5). A dummy cover (7) is fixedly installed on the mounting block (6). A metal block (10) is fixedly installed on the upper surface of the dummy cover (7). The positive terminal post (4) is slidably installed inside the metal block (10). A positioning mechanism (11) is provided on the upper surface of the mounting plate (3).
2. The lithium-ion battery dummy cover connection structure according to claim 1, characterized in that: A limiting sleeve (8) is fixedly installed on the upper surface of the mounting plate (3), and a sliding rod (9) is fixedly installed on the bottom of the dummy cover (7). The sliding rod (9) is slidably installed inside the limiting sleeve (8).
3. The lithium-ion battery dummy cover connection structure according to claim 2, characterized in that: The battery casing (1) and the dummy cover (7) are provided with welding grooves (12), and there are multiple welding grooves (12).
4. The lithium-ion battery dummy cover connection structure according to claim 2, characterized in that: An insulating block (13) is fixedly installed inside the mounting plate (3), and the positive electrode post (4) is fixedly installed inside the insulating block (13).
5. The lithium-ion battery dummy cover connection structure according to claim 1, characterized in that: The positioning mechanism (11) includes a mounting strip (111) fixedly mounted on the upper surface of the mounting plate (3). A rotating rod (112) is fixedly mounted inside the mounting strip (111). A first rotating block (113) is rotatably mounted on the rotating rod (112). A first positioning block (114) is fixedly mounted on the top of the first rotating block (113). A first support block (115) is fixedly mounted on the first positioning block (114). A first spring (116) is fixedly mounted on the bottom of the first support block (115). The other end of the first spring (116) is fixedly mounted on the upper surface of the mounting strip (111). A first sliding strip (117) is fixedly mounted on the top of the first positioning block (114).
6. The lithium-ion battery dummy cover connection structure according to claim 5, characterized in that: A second rotating block (118) is rotatably mounted on the rotating rod (112). A second positioning block (119) is fixedly mounted on the top of the second rotating block (118). A second support block (1110) is fixedly mounted on the second positioning block (119). A second spring (1111) is fixedly mounted on the bottom of the second support block (1110). The other end of the second spring (1111) is fixedly mounted on the upper surface of the mounting strip (111). A second slide bar (1112) is fixedly mounted on the top of the second positioning block (119).
7. The lithium-ion battery dummy cover connection structure according to claim 3, characterized in that: A connecting block (1113) is fixedly installed at the bottom of the dummy cover (7), and a locking block (1114) is fixedly installed at the bottom of the connecting block (1113).