A combined small lithium battery

Abstract

This utility model relates to the field of lithium battery technology and discloses a modular small lithium battery, including a combination box and several lithium battery bodies. Several inner placement frames are fixedly connected at equal intervals inside the combination box. Each lithium battery body is located inside each inner placement frame. A base frame is fixedly connected to the lower inner side of each inner placement frame, and support seats are symmetrically fixedly installed on the front and rear inner walls of the inner placement frames. A sleeve is fixedly installed on the top of each support seat. A fixed contact and a moving contact are provided inside the sleeve. The fixed contact is fixedly installed on the top of the support seat, and a spring is fixedly installed on the bottom of the moving contact. The lower end of the spring is fixedly installed to the top of the support seat. This utility model increases the convenience of replacing lithium battery bodies, making it easier to use. It also achieves automatic electrical connection after the lithium battery body is installed, eliminating the need for additional manual electrical connection and reducing workload.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically a combined small lithium battery. Background Technology

[0002] A lithium battery is a rechargeable battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Its core characteristics include high energy density, lightweight and long cycle life, and it is widely used in mobile phones, electric vehicles and other fields. In order to increase the energy storage capacity, multiple lithium batteries can be combined into a combined lithium battery. The core advantages of combined lithium batteries are scalability, safety and convenience, so they are widely used.

[0003] The published patent document with announcement number CN220856859U discloses a combined small lithium battery. When the battery body expands, it squeezes the plastic elastic plate outward, causing the conductive plates at both ends to displace and break the connection with the conductive strip, thereby disconnecting the circuit immediately, reducing the impact of battery failure on electrical components, and improving battery safety. However, the published patent document requires additional manual electrical connection after the lithium battery body is installed, which increases the workload. Utility Model Content

[0004] The purpose of this invention is to provide a combined small lithium battery that solves the problems mentioned in the background art.

[0005] This application provides a modular small lithium battery, including a combination box and several lithium battery bodies. Several inner placement frames are fixedly connected at equal intervals inside the combination box. Each lithium battery body is located inside each inner placement frame. A base frame is fixedly connected to the lower inner side of each inner placement frame, and support seats are symmetrically fixedly installed on the front and rear inner walls of the inner placement frames. A sleeve is fixedly installed on the top of the support seat. A fixed contact and a moving contact are disposed inside the sleeve. The fixed contact is fixedly installed on the top of the support seat, and a spring is fixedly installed on the bottom of the moving contact. The lower end of the spring is fixedly installed to the top of the support seat. A wire is electrically connected between the fixed contact and the moving contact. Battery contacts are symmetrically fixedly connected to the front and rear sides of each lithium battery body, and the battery contacts are adapted to the sleeve and the moving contact.

[0006] Optionally, the front and rear parts of the top two sides of the inner placement frame are provided with sliding grooves. A slider is slidably connected inside the sliding groove, and a sliding shaft is fixedly installed inside the sliding groove. A fixing rod is fixedly installed between the two sliders in the horizontal direction. The sliding shaft passes through the slider, and a second spring is sleeved on the sliding shaft. The slider is slidably connected to the sliding shaft, and the two ends of the second spring are respectively connected to the inner wall of the sliding groove and the slider.

[0007] Optionally, rock wool boards are filled between every two inner placement frames.

[0008] Optionally, a positive terminal and a negative terminal are fixedly connected to one side of the combination box, and the two fixed contacts inside each inner placement frame are connected in parallel with the positive terminal and the negative terminal.

[0009] Optionally, vertical rods are fixedly connected to the front and rear parts of the inner walls on both sides of the inner placement frame, and limit holes are opened on the vertical rods. Limit strips are fixedly connected to the front and rear parts of both sides of the lithium battery body, and the limit strips are adapted to the limit holes.

[0010] Optionally, the rear hinge of the top of the combination box is connected to a matching box lid.

[0011] Optionally, the cover of the box has several upper heat dissipation holes, and the bottom of the combined box has several lower heat dissipation holes.

[0012] Optionally, raising feet are fixedly connected to the four corners of the bottom of the combination box.

[0013] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0014] 1. The technical solution of this application, through the cooperation of the support base, sleeve, fixed contact, moving contact, spring, wire and battery contact, ensures that the battery contact and moving contact remain in contact and electrically connected during the shaking process when the lithium battery body is installed, realizing automatic electrical connection after the lithium battery body is installed, eliminating the need for additional manual electrical connection and reducing workload.

[0015] 2. The technical solution of this application facilitates the installation of the lithium battery body through the cooperation of the vertical rod, limiting hole, limiting strip, sliding groove, slider, sliding shaft, spring and fixing rod, thereby increasing the convenience of replacing the lithium battery body and making it more convenient to use. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the present invention from the front view.

[0018] Figure 2 This is a schematic diagram of the structure of the lithium battery body and the inner placement frame of this utility model.

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4This is a structural schematic diagram of the inner frame of this utility model viewed from below;

[0021] Figure 5 This is a sectional view of the support base and sleeve of this utility model from the front view.

[0022] Figure 6 This is a structural schematic diagram of the present invention viewed from below.

[0023] In the diagram: 1. Combination box; 2. Inner placement frame; 3. Lithium battery body; 4. Rock wool board; 5. Positive terminal; 6. Negative terminal; 7. Box cover; 8. Upper heat dissipation hole; 9. Heightening foot; 10. Battery contact; 11. Fixing rod; 12. Limiting strip; 13. Slide groove; 14. Slider; 15. Slide shaft; 16. Spring 2; 17. Vertical rod; 18. Limiting hole; 19. Support base; 20. Sleeve; 21. Base frame; 22. Fixed contact; 23. Moving contact; 24. Spring 1; 25. Wire; 26. Lower heat dissipation hole. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Please see Figure 1-5 This utility model provides a modular small lithium battery, including a combination box 1 and several lithium battery bodies 3. Several inner placement frames 2 are fixedly connected at equal intervals inside the combination box 1. Each lithium battery body 3 is located inside each inner placement frame 2. A base frame 21 is fixedly connected to the lower inside of the inner placement frame 2. Support seats 19 are symmetrically fixedly installed on the front and rear inner walls of the inner placement frame 2. A sleeve 20 is fixedly installed on the top of the support seat 19. A fixed contact 22 and a moving contact 23 are provided inside the sleeve 20. The fixed contact 22 is fixedly installed on the top of the support seat 19. A spring 24 is fixedly installed on the bottom of the moving contact 23. The lower end of the spring 24 is fixedly installed on the top of the support seat 19. A wire 25 is electrically connected between the fixed contact 22 and the moving contact 23. Battery contacts 10 are symmetrically fixedly connected to the front and rear sides of the lithium battery body 3. The battery contacts 10 are compatible with the sleeve 20 and the moving contact 23.

[0026] In this technical solution, by using a sleeve 20 and a moving contact 23 that are adapted to the battery contact 10, when the lithium battery body 3 is installed inside the inner placement frame 2, the battery contact 10 can enter the sleeve 20 and make the battery contact 10 contact with the moving contact 23. Due to the elastic force of the spring 24, the moving contact 23 has an upward tendency, which ensures that the battery contact 10 and the moving contact 23 still maintain contact and electrical connection during shaking. This achieves automatic electrical connection after the lithium battery body 3 is installed, eliminating the need for additional manual electrical connection and reducing workload.

[0027] In some technical solutions, such as Figure 2-3 As shown, the inner placement frame 2 has sliding grooves 13 on both sides of the top and front and back. Sliding blocks 14 are slidably connected inside the sliding grooves 13, and sliding shafts 15 are fixedly installed inside the sliding grooves 13. A fixing rod 11 is fixedly installed between the two horizontal sliding blocks 14. The sliding shaft 15 passes through the sliding blocks 14, and a second spring 16 is sleeved on the sliding shaft 15. The sliding blocks 14 are slidably connected to the sliding shaft 15, and the two ends of the second spring 16 are respectively connected to the inner wall of the sliding groove 13 and the sliding blocks 14.

[0028] In use, the slider 14 is moved by the fixing rod 11, causing the slider 14 to squeeze the second spring 16 and move along the slide groove 13. Then, the lithium battery body 3 is placed inside the inner placement frame 2. The elastic force of the second spring 16 drives the slider 14 to reset, causing the fixing rod 11 to move above the lithium battery body 3, thus confining the lithium battery body 3 inside the inner placement frame 2. This increases the convenience of replacing the lithium battery body 3 and makes it more convenient to use.

[0029] In some technical solutions, such as Figure 1 As shown, rock wool board 4 is filled between every two inner placement frames 2.

[0030] In use, the lithium battery bodies 3 inside each inner placement frame 2 are separated by rock wool boards 4 to prevent abnormal heating of one lithium battery body 3 from affecting the use of other lithium battery bodies 3.

[0031] In some technical solutions, such as Figure 1 , Figure 2 and Figure 5 As shown, a positive terminal 5 and a negative terminal 6 are fixedly connected to one side of the combination box 1, and two fixed contacts 22 inside each inner placement frame 2 are connected in parallel with the positive terminal 5 and the negative terminal 6.

[0032] In use, the fixed contact 22, which is connected in parallel with the positive terminal 5 and the negative terminal 6, can form multiple parallel circuits between each lithium battery body 3 and the positive terminal 5 and the negative terminal 6. Even when individual lithium battery bodies 3 cannot be used normally, this combined small lithium battery can still provide power.

[0033] In some technical solutions, such as Figure 2-3As shown, vertical rods 17 are fixedly connected to the front and rear parts of the inner walls on both sides of the inner placement frame 2. Limiting holes 18 are opened on the vertical rods 17. Limiting strips 12 are fixedly connected to the front and rear parts of both sides of the lithium battery body 3. The limiting strips 12 are adapted to the limiting holes 18.

[0034] During use, the limiting strip 12 and the limiting hole 18 ensure the accuracy of the lithium battery body 3 being installed inside the inner placement frame 2.

[0035] In some technical solutions, such as Figure 1 and Figure 6 As shown, the rear hinge of the top of the combination box 1 is connected to a matching box cover 7.

[0036] When in use, the combination box 1 can be easily opened and closed via the box cover 7.

[0037] In some technical solutions, such as Figure 1 and Figure 6 As shown, the cover 7 has several upper heat dissipation holes 8, and the bottom of the combination box 1 has several lower heat dissipation holes 26.

[0038] During use, the lithium battery body 3 can dissipate heat to the upper and lower parts through the upper heat dissipation hole 8 and the lower heat dissipation hole 26.

[0039] In some technical solutions, such as Figure 1 and Figure 6 As shown, raising feet 9 are fixedly connected to the four corners of the bottom of the combination box 1.

[0040] When in use, the bottom of the combination box 1 is raised by the riser foot 9 to prevent the lower heat dissipation hole 26 from being blocked.

[0041] Working principle: During installation, the push-pull fixing rod 11 moves the slider 14, causing the slider 14 to compress the second spring 16 and move along the slide groove 13. Then, the lithium battery body 3 is placed inside the inner placement frame 2, so that each limiting strip 12 enters the corresponding limiting hole 18. The elastic force of the second spring 16 drives the slider 14 to reset, causing the fixing rod 11 to move above the lithium battery body 3, thus confining the lithium battery body 3 inside the inner placement frame 2. During the installation of the lithium battery body 3, the battery contact 10 enters the sleeve 20 and makes the battery contact 10 contact with the moving contact 23. Due to the elastic force of the first spring 24, the moving contact 23 has an upward tendency, which ensures that the battery contact 10 and the moving contact 23 remain in contact and electrically connected during shaking, thus realizing automatic electrical connection after the lithium battery body 3 is installed.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A combined small lithium battery comprising a combined box (1) and several lithium battery bodies (3), characterized in that: The combination box (1) has several inner placement frames (2) fixedly connected at equal intervals inside. Each lithium battery body (3) is located inside each inner placement frame (2). A base frame (21) is fixedly connected to the lower inside of each inner placement frame (2). Support seats (19) are symmetrically fixedly installed on the front and rear inner walls of the inner placement frame (2). A sleeve (20) is fixedly installed on the top of the support seat (19). A fixed contact (22) and a moving contact (23) are provided inside the sleeve (20). The fixed contact (22) is fixedly installed on the top of the support base (19), and a spring (24) is fixedly installed on the bottom of the moving contact (23). The lower end of the spring (24) is fixedly installed on the top of the support base (19). A wire (25) is electrically connected between the fixed contact (22) and the moving contact (23). Battery contacts (10) are symmetrically fixedly connected to the front and rear sides of the lithium battery body (3). The battery contacts (10) are compatible with the sleeve (20) and the moving contact (23).

2. The combined small-sized lithium battery according to claim 1, wherein The inner placement frame (2) has sliding grooves (13) on both sides of the top and front and back. A slider (14) is slidably connected inside the sliding groove (13), and a sliding shaft (15) is fixedly installed inside the sliding groove (13). A fixing rod (11) is fixedly installed between the two sliders (14) in the horizontal direction. The sliding shaft (15) passes through the slider (14), and a second spring (16) is sleeved on the sliding shaft (15). The slider (14) is slidably connected to the sliding shaft (15), and the two ends of the second spring (16) are respectively connected to the inner wall of the sliding groove (13) and the slider (14).

3. The combined small-sized lithium battery according to claim 1, wherein Rock wool board (4) is filled between each two inner placement frames (2).

4. The combined small-sized lithium battery according to claim 1, wherein The combination box (1) has a positive terminal (5) and a negative terminal (6) fixedly connected on one side, and the two fixed contacts (22) inside each inner placement frame (2) are connected in parallel with the positive terminal (5) and the negative terminal (6).

5. The combined small-sized lithium battery according to claim 2, wherein Vertical rods (17) are fixedly connected to the front and rear parts of the inner walls on both sides of the inner placement frame (2). Limiting holes (18) are opened on the vertical rods (17). Limiting strips (12) are fixedly connected to the front and rear parts of both sides of the lithium battery body (3). The limiting strips (12) are adapted to the limiting holes (18).

6. The combined small-sized lithium battery according to claim 1, wherein The rear hinge at the top of the combination box (1) is connected to a matching box cover (7).

7. The combined small-sized lithium battery according to claim 6, wherein The box cover (7) has several upper heat dissipation holes (8), and the bottom of the combined box (1) has several lower heat dissipation holes (26).

8. The combined small-sized lithium battery according to claim 1, wherein The four corners of the bottom of the combination box (1) are all fixedly connected with height-increasing feet (9).

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