Combined lithium battery protection board

Abstract

The utility model belongs to the field of lithium battery protection plates, and particularly relates to a combined type lithium battery protection plate which comprises a base and a protection plate body, a lithium battery is inserted into the base, a contact is arranged at the bottom of the protection plate body and abuts against the lithium battery, a positioning block is fixedly connected to the edge of the upper end of the protection plate body, and the positioning block abuts against the lithium battery. The edge of the upper end of the protection plate makes contact with a connecting block, and the positioning block penetrates through the connecting block and is connected with the connecting block in a clamped mode. According to the lithium battery protection device, the positioning block is arranged on the protection plate, then the connecting block, the adjusting rod, the support, the internal thread sleeve and other components are arranged, the connecting block can be clamped at the positioning block, and then the distance between the protection plate and the lithium battery can be adjusted through thread movement of the internal thread sleeve and the adjusting rod, so that a combined installation mode is adopted; the protection plate is convenient to disassemble and assemble, and is also suitable for lithium batteries with different heights.

Description

Technical Field

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

[0002] Currently, lithium batteries in practical applications need to be connected in series or parallel to form battery packs. Due to the differences between individual cells, during charging and discharging, one cell may reach overcharge, over-discharge, or overcurrent before the others. In practical applications, lithium battery protection boards are equipped on battery packs to control charging and discharging.

[0003] A search revealed that a utility model patent with patent authorization announcement number CN216312724U discloses a lithium battery pack equalization charging protection board, including a protection circuit board with an internally threaded post bonded through its outer side. A wire socket is soldered to the outer side of the protection circuit board, and a power supply line is snapped onto the outer side of the wire socket. A conductive insert is wound around the outer side of the power supply line with copper wire. Heat dissipation fins are welded and fixed to the bottom of the protection circuit board.

[0004] Existing lithium battery protection boards are mostly connected to the lithium battery electrodes by welding, which makes them inconvenient to disassemble and repair later. In addition, different lithium battery lengths require different lithium battery protection boards, which is also inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide a combined lithium battery protection board, which solves the problem that existing lithium battery protection boards are mostly connected to the electrodes of the lithium battery by welding, making them inconvenient to disassemble and repair later. It also solves the problem that different lithium battery protection boards need to be installed for lithium batteries of different lengths, which is also inconvenient.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined lithium battery protection board, comprising a base and a protection board, wherein a lithium battery is inserted into the base, a contact is provided at the bottom of the protection board, the contact abuts against the lithium battery, a positioning block is fixedly connected to the upper edge of the protection board, a connecting block is contacted at the upper edge of the protection board, the positioning block passes through the connecting block and is engaged with the connecting block, an adjusting rod is fixedly connected to the bottom of the connecting block, a bracket is fixedly connected to the upper edge of the base, an internal threaded sleeve is installed inside the horizontal part of the bracket through a bearing, and the adjusting rod passes through the internal threaded sleeve and is threadedly connected to the internal threaded sleeve.

[0007] Preferably, a locking block is fixedly connected to the upper end of the connecting block, the locking block contacts the positioning block, a locking pin is slidably connected inside the positioning block, the locking pin is inserted into the locking block, and a spring is provided inside the positioning block. Through the cooperation of the locking pin and the locking block, the connection between the positioning block and the connecting block is made tighter.

[0008] Preferably, one end of the first spring is fixedly connected to the locking pin, and the other end of the first spring is fixedly connected to the inner surface of the positioning block. By using the first spring, the elastic force can be applied to the locking pin.

[0009] Preferably, a lever is fixedly connected to the pin body of the locking pin, and the lever is slidably connected to the positioning block. The lever facilitates the movement of the locking pin.

[0010] Preferably, a limiting block is fixedly connected to the end of the adjusting rod. The limiting block limits the axial travel of the adjusting rod on the internal threaded sleeve.

[0011] Preferably, the internal threaded sleeve has a retaining pin that slides inside, and the retaining pin engages with the horizontal part of the bracket. A second spring is also provided inside the internal threaded sleeve. The retaining pin prevents the internal threaded sleeve from loosening.

[0012] Preferably, one end of the second spring is fixedly connected to the retaining pin, and the other end of the second spring is fixedly connected to the inner surface of the internal threaded sleeve. By providing the second spring, the elastic force can be applied to the retaining pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model sets a positioning block on the protection plate, and then sets a connecting block, adjusting rod, bracket, internal thread sleeve and other components. The connecting block will be locked at the positioning block, and the distance between the protection plate and the lithium battery can be adjusted by the threaded movement of the internal thread sleeve and the adjusting rod. In this way, the combined installation method not only facilitates the disassembly and assembly of the protection plate, but is also applicable to lithium batteries of different heights.

[0015] 2. This utility model sets a locking block on the connecting block, and then sets a locking pin that is extended and retracted by a spring in the positioning block. The locking pin will be inserted laterally into the locking block under the action of the spring. At the same time, a lever is set on the locking pin. In this way, the locking and fixing of the positioning block and the connecting block can be completed by controlling the locking pin and the locking block by the lever, thus ensuring the tightness of the connection between the two. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2This utility model Figure 1 A partial structural front sectional view;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This utility model Figure 1 Side sectional view of the connecting block;

[0020] Figure 5 This utility model Figure 1 Schematic diagram of local structure Figure 1 ;

[0021] Figure 6 This utility model Figure 1 Schematic diagram of local structure Figure 2 .

[0022] In the diagram: 1. Base; 2. Lithium battery; 3. Protection board; 4. Contact; 5. Connecting block; 6. Positioning block; 7. Locking block; 8. Locking pin; 9. Spring 1; 10. Toggle block; 11. Adjusting rod; 12. Limiting block; 13. Bracket; 14. Internal threaded sleeve; 15. Snap pin; 16. Spring 2. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 A combined lithium battery protection board includes a base 1 and a protection plate 3. A lithium battery 2 is inserted into the base 1. A contact 4 is provided at the bottom of the protection plate 3, and the contact 4 abuts against the lithium battery 2. A positioning block 6 is fixedly connected to the upper edge of the protection plate 3, and a connecting block 5 is contacted at the upper edge of the protection plate 3. The positioning block 6 passes through the connecting block 5 and is engaged with the connecting block 5. An adjusting rod 11 is fixedly connected to the bottom of the connecting block 5, and a limiting block 12 is fixedly connected to the end of the adjusting rod 11. The limiting block 12 limits the axial travel of the adjusting rod 11 on the internal threaded sleeve 14. A bracket 13 is fixedly connected to the upper edge of the base 1. An internal threaded sleeve 14 is installed inside the horizontal part of the bracket 13 through a bearing. The adjusting rod 11 passes through the internal threaded sleeve 14 and is threadedly connected to the internal threaded sleeve 14.

[0025] Please see Figure 4 , Figure 5 , Figure 6 A locking block 7 is fixedly connected to the upper end of the connecting block 5. The locking block 7 contacts the positioning block 6. A locking pin 8 is slidably connected inside the positioning block 6, and the locking pin 8 is inserted into the locking block 7. A spring 9 is installed inside the positioning block 6. The cooperation between the locking pin 8 and the locking block 7 makes the connection between the positioning block 6 and the connecting block 5 tighter. One end of the spring 9 is fixedly connected to the locking pin 8, and the other end of the spring 9 is fixedly connected to the inner surface of the positioning block 6. The spring 9 allows the elastic force to be applied to the locking pin 8. A lever 10 is fixedly connected to the pin body of the locking pin 8, and the lever 10 is slidably connected to the positioning block 6. The lever 10 facilitates the movement of the locking pin 8.

[0026] Please see Figure 3 The internal threaded sleeve 14 has a sliding connection with a retaining pin 15, which engages with the horizontal part of the bracket 13. A second spring 16 is installed inside the internal threaded sleeve 14. The retaining pin 15 prevents the internal threaded sleeve 14 from loosening. One end of the second spring 16 is fixedly connected to the retaining pin 15, and the other end is fixedly connected to the inner surface of the internal threaded sleeve 14. The second spring 16 allows the elastic force to be applied to the retaining pin 15.

[0027] The specific implementation process of this utility model is as follows: In use, first insert each lithium battery 2 into the base 1, then place the protective plate 3 with the contact point 4 facing down and attach the contact point 4 to the electrode of the lithium battery 2. Then rotate the inner threaded sleeve 14. The inner threaded sleeve 14 moves with the adjusting rod 11 through the thread movement, causing the connecting block 5 to move down until it touches the protective plate 3. The positioning block 6 on the protective plate 3 is inserted into the connecting block 5. At the same time, the locking pin 8 is inserted into the locking block 7 by the lever 10. This completes the overall installation. This combination installation method not only facilitates the disassembly and assembly of the protective plate 3, but is also applicable to lithium batteries 2 of different heights.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined lithium battery protection board, comprising a base (1) and a protection board (3), characterized in that: A lithium battery (2) is inserted inside the base (1). A contact (4) is provided at the bottom of the protection plate (3). The contact (4) abuts against the lithium battery (2). A positioning block (6) is fixedly connected to the upper edge of the protection plate (3). A connecting block (5) is in contact with the upper edge of the protection plate (3). The positioning block (6) passes through the connecting block (5) and is engaged with the connecting block (5). An adjusting rod (11) is fixedly connected to the bottom of the connecting block (5). A bracket (13) is fixedly connected to the upper edge of the base (1). An internal thread sleeve (14) is installed inside the horizontal part of the bracket (13) through a bearing. The adjusting rod (11) passes through the internal thread sleeve (14) and is threadedly connected to the internal thread sleeve (14).

2. The combined lithium battery protection board according to claim 1, characterized in that: The upper end of the connecting block (5) is fixedly connected to a locking block (7), the locking block (7) is in contact with the positioning block (6), the positioning block (6) is slidably connected to a locking pin (8), the locking pin (8) is inserted into the locking block (7), and the positioning block (6) is provided with a spring (9).

3. A combined lithium battery protection board according to claim 2, characterized in that: One end of the spring (9) is fixedly connected to the locking pin (8), and the other end of the spring (9) is fixedly connected to the inner surface of the positioning block (6).

4. A combined lithium battery protection board according to claim 2, characterized in that: A lever (10) is fixedly connected to the pin body of the locking pin (8), and the lever (10) is slidably connected to the positioning block (6).

5. A combined lithium battery protection board according to claim 1, characterized in that: The end of the adjusting rod (11) is fixedly connected to a limiting block (12).

6. A combined lithium battery protection board according to claim 1, characterized in that: The internal threaded sleeve (14) is slidably connected to a retaining pin (15), which engages with the horizontal part of the bracket (13). A second spring (16) is provided inside the internal threaded sleeve (14).

7. A combined lithium battery protection board according to claim 6, characterized in that: One end of the second spring (16) is fixedly connected to the locking pin (15), and the other end of the second spring (16) is fixedly connected to the inner surface of the internal threaded sleeve (14).

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