Insulation arc protection device of battery cell

Abstract

The utility model belongs to the field of protection devices, and particularly relates to an insulating arc-preventing protection device of a battery cell, which comprises a battery, a connecting wire is arranged at the top of the battery, a connector is arranged at the other end of the connecting wire, two symmetrically distributed sheaths are sleeved on the outer side of the battery in a sliding manner, the two sheaths are in contact with each other, and the connecting wire is connected with the connector. The front end and the rear end of the sheath are fixedly connected with sealing strips, and the two sealing strips make contact with each other. According to the utility model, the positive and negative screw rod is designed to be in threaded fit with the fixed block, so that the threaded movement of the fixed block can be realized when the knob is rotated to drive the positive and negative screw rod to rotate, the movement of the fixed block can realize the movement of the sheaths in the horizontal direction, the abutting contact between the two sheaths can be realized, and the sealing strip can protect and seal the joint of the sheaths. As the screw rod has a certain self-locking effect, the combined sealing performance of the two sheaths can be improved, and the insulating and arc-preventing effects of the device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of protection device technology, specifically to an insulation and arc protection device for battery cells. Background Technology

[0002] The insulation arc protection device of the battery cell is a safety device used to protect the battery cell from arcing under short circuit or abnormal operation conditions, so as to avoid fire or explosion.

[0003] Utility model patent CN221766877U discloses a wrap-around lithium battery cell insulating protective film. It includes a battery body with two connecting wires mounted on its upper end. Two connectors are fixedly connected to the ends of the connecting wires away from the battery body. A protective sleeve is slidably connected to the surface of the battery body. A hook plate is fixedly connected to the inner wall of one side of the protective sleeve, and a locking plate is fixedly connected to the inner wall of the protective sleeve away from the hook plate. The locking plate engages with the hook plate. Both the locking plate and the hook plate are made of plastic. A magnet is fixedly connected to the side of the locking plate near the hook plate, and an iron block is fixedly connected to the side of the hook plate near the locking plate. The protective sleeve consists of an adsorption layer and a protective layer from the inside out. This utility model provides a wrap-around lithium battery cell insulating protective film with the advantages of easy disassembly and installation of the protective film and the ability to reuse the protective film multiple times.

[0004] In the aforementioned prior art, the protective sleeve is connected and fixed to the battery via a snap-fit ​​mechanism during the use of the protective device. However, the stability of this snap-fit ​​is insufficient, which affects the sealing and insulation effect of the device and fails to achieve a good anti-arc effect. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide an insulation and arc protection device for battery cells, which solves the problem of insufficient sealing and insulation effect of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an insulation and arc protection device for a battery cell, comprising a battery, a connecting wire provided at the top of the battery, a connector provided at the other end of the connecting wire, two symmetrically distributed sheaths slidably sleeved on the outer side of the battery, the two sheaths being in contact with each other, sealing strips fixedly connected to both the front and rear ends of the sheaths, the two sealing strips being in contact with each other, a connecting seat slidably connected to the bottom of the sheath, a connecting rod fixedly connected to the outer side of the sheath, a connecting block slidably connected to the outer side of the connecting rod, an assembly mechanism provided on the connecting seat, and a connecting mechanism provided on the connecting block.

[0007] Preferably, a guide block is slidably fitted inside the connecting block, and the guide block is fixedly connected to the connecting rod. By designing the guide block, the movement of the connecting block can be guided.

[0008] Preferably, the assembly mechanism includes a fixing block, which is fixedly connected to the bottom of the sheath. A positive and negative screw is threadedly connected inside the fixing block, and the positive and negative screw is rotatably connected to the connecting seat via bearings. Knobs are fixedly connected to both ends of the positive and negative screw. A slider is fixedly connected to the bottom of the fixing block, and the slider is slidably connected to the connecting seat. A guide rod is slidably sleeved inside the slider, and the guide rod is fixedly connected to the connecting seat. A ball bearing is movably sleeved inside the slider, and the ball bearing is slidably connected to the connecting seat. This assembly mechanism facilitates the combination and fixation of sheaths.

[0009] Preferably, the connecting seat has a groove inside, and a ball bearing is slidably connected inside the groove. By designing the groove, the ball bearing can slide along the groove.

[0010] Preferably, the connecting mechanism includes a retaining ball, which is movably sleeved inside the connecting block. A connecting post is movably sleeved outside the retaining ball, and the connecting post is slidably connected to the connecting block. The connecting post is fixedly connected to a connecting rod. A support block is movably sleeved outside the retaining ball, and the support block is slidably connected to the connecting block. A fixing rod is slidably sleeved inside the support block, and the fixing rod is fixedly connected to the connecting block. A spring is provided on the outside of the fixing rod. A spring ball is fixedly connected to the outside of the support block, and the spring ball is fixedly connected to the connecting block. By designing the connecting mechanism, the tightness of the connection between the sheaths can be improved.

[0011] Preferably, the connecting post has a groove inside, and a retaining ball is movably fitted inside the groove. This groove design allows the retaining ball to roll inside the connecting post.

[0012] Preferably, one end of the spring is fixedly connected to the support block, and the other end of the spring is fixedly connected to the connecting block. The spring is designed so that its force can be applied to the support block.

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

[0014] 1. This utility model designs a threaded fit between the positive and negative screws and the fixing block. When the knob is turned to drive the positive and negative screws to rotate, the fixing block can move in a threaded manner. The movement of the fixing block can move the sheath in the horizontal direction, and can achieve tight contact between the two sheaths. The sealing strip can protect and seal the connection of the sheaths. Since the screw has a certain self-locking effect, it can improve the combined sealing performance of the two sheaths and improve the insulation and anti-arc effect of the device.

[0015] 2. This utility model, through the design of the plug-in cooperation between the connecting block and the connecting rod, can realize the connection and fixation of the two connecting rods, and can provide auxiliary limiting and fixation for the connection of the two sheaths, which can further improve the connection tightness and insulation effect of the sheaths. When connecting the connecting block, it can be directly moved down and inserted, making installation and use convenient and quick. Attached Figure Description

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

[0017] Figure 2 This utility model Figure 1 A partial three-dimensional sectional view of the structure;

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

[0019] Figure 4 This utility model Figure 1 The front sectional view of the connecting block.

[0020] In the diagram: 1. Battery; 2. Connecting wire; 3. Connector; 4. Sheath; 5. Sealing strip; 6. Connecting seat; 7. Connecting rod; 8. Assembly mechanism; 9. Connecting mechanism; 10. Connecting block; 11. Guide block; 81. Fixing block; 82. Positive and negative screws; 83. Knob; 84. Slider; 85. Guide rod; 86. Ball bearing; 87. Slide groove; 91. Connecting post; 92. Groove; 93. Ball catcher; 94. Support block; 95. Fixing rod; 96. Spring; 97. Ball. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2An insulation and arc protection device for a battery cell includes a battery 1. A connecting wire 2 is provided on the top of the battery 1, and a connector 3 is provided at the other end of the connecting wire 2. Two symmetrically distributed sheaths 4 are slidably sleeved on the outside of the battery 1, and the two sheaths 4 are in contact with each other. Sealing strips 5 are fixedly connected to both the front and rear ends of the sheaths 4, and the two sealing strips 5 are in contact with each other. A connecting seat 6 is slidably connected to the bottom of the sheaths 4. A connecting rod 7 is fixedly connected to the outside of the sheaths 4. A connecting block 10 is slidably connected to the outside of the connecting rod 7. A guide block 11 is slidably sleeved inside the connecting block 10. The guide block 11 is fixedly connected to the connecting rod 7. By designing the guide block 11, the movement of the connecting block 10 can be guided. A combination mechanism 8 is provided on the connecting seat 6, and a connecting mechanism 9 is provided on the connecting block 10.

[0023] Please see Figure 1 , Figure 2 , Figure 3 The assembly mechanism 8 includes a fixing block 81. The bottom of the sheath 4 is fixedly connected to the fixing block 81. The inside of the fixing block 81 is connected to a positive and negative screw 82 via threads. The positive and negative screw 82 is rotatably connected to the connecting seat 6 via bearings. Both ends of the positive and negative screw 82 are fixedly connected to knobs 83. The bottom of the fixing block 81 is fixedly connected to a slider 84. The slider 84 is slidably connected to the connecting seat 6. The inside of the slider 84 is slidably fitted with a guide rod 85. The guide rod 85 is fixedly connected to the connecting seat 6. The inside of the slider 84 is movably fitted with a ball 86. The ball 86 is slidably connected to the connecting seat 6. The connecting seat 6 has a groove 87 inside. The ball 86 is slidably connected inside the groove 87. By designing the groove 87, the ball 86 can slide along the groove 87. By designing the assembly mechanism 8, it is convenient to assemble and fix the sheaths 4 together.

[0024] Please see Figure 1 , Figure 4 The connecting mechanism 9 includes a retaining ball 93, which is movably fitted inside the connecting block 10. A connecting post 91 is movably fitted outside the retaining ball 93. A groove 92 is formed inside the connecting post 91, and the retaining ball 93 is movably fitted inside the groove 92. By designing the groove 92, the retaining ball 93 can roll inside the connecting post 91. The connecting post 91 is slidably connected to the connecting block 10 and fixedly connected to the connecting rod 7. A support block 94 is movably fitted outside the retaining ball 93 and is slidably connected to the connecting block 10. A fixing rod 95 is slidably sleeved inside the support block 94. The fixing rod 95 is fixedly connected to the connecting block 10. A spring 96 is provided on the outside of the fixing rod 95. One end of the spring 96 is fixedly connected to the support block 94, and the other end of the spring 96 is fixedly connected to the connecting block 10. By designing the spring 96, the force of the spring 96 can be applied to the support block 94. A ball 97 is fixedly connected to the outside of the support block 94. The ball 97 is fixedly connected to the connecting block 10. By designing the connecting mechanism 9, the tightness of the connection between the sheaths 4 can be improved.

[0025] The specific implementation process of this utility model is as follows: When it is necessary to protect the battery 1, first insert the battery 1 between the two protective sleeves 4, then turn the knob 83. The knob 83 drives the positive and negative screws 82 to rotate, the fixing block 81 will make threaded movement, the two fixing blocks 81 will move in opposite directions, the fixing block 81 will drive the slider 84 to slide along the connecting seat 6, the slider 84 can simultaneously drive the ball 86 to slide along the slide groove 87, and the slider 84 can slide along the guide rod 85, so that the two protective sleeves 4 move towards each other, which can achieve tight contact between the two protective sleeves 4. The sealing strip 5 can protect and seal the connection of the protective sleeves 4. Since the screw has a certain self-locking effect, it can improve the combined sealing of the two protective sleeves 4 and improve the insulation and anti-arc effect of the device.

[0026] When improved connection stability is required, the connecting block 10 is first inserted between the two connecting rods 7. The guide block 11 slides into the connecting block 10, and the connecting block 10 slides relative to the connecting post 91. The connecting block 10 drives the locking ball 93 to move. When the locking ball 93 contacts the connecting post 91, it is squeezed and pushed to roll away from the connecting post 91. The locking ball 93 drives the support block 94 to move horizontally. The support block 94 squeezes the ball 97. At the same time, the support block 94 slides along the fixed rod 95 to squeeze the spring 96. As the connecting block 10 moves, the elasticity of the spring 96 and the ball 97 will give the support block 94 and the locking ball 93 an outward push, which can push the locking ball 93 into the groove 92 inside the connecting post 91. At this time, the connection and fixation of the connecting block 10 and the connecting rod 7 can be achieved, and the horizontal direction of the connecting rod 7 and the sheath 4 can be limited, which can further improve the connection tightness and insulation effect of the sheath 4.

[0027] 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. An insulation and arc protection device for a battery cell, comprising a battery (1), characterized in that: A connecting wire (2) is provided on the top of the battery (1), and a connector (3) is provided at the other end of the connecting wire (2). Two symmetrically distributed sheaths (4) are slidably sleeved on the outside of the battery (1). The two sheaths (4) are in contact with each other. Sealing strips (5) are fixedly connected to both the front and rear ends of the sheaths (4). The two sealing strips (5) are in contact with each other. A connecting seat (6) is slidably connected to the bottom of the sheaths (4). A connecting rod (7) is fixedly connected to the outside of the sheaths (4). A connecting block (10) is slidably connected to the outside of the connecting rod (7). A combination mechanism (8) is provided on the connecting seat (6), and a connecting mechanism (9) is provided on the connecting block (10).

2. The insulation and arc protection device for a battery cell according to claim 1, characterized in that: The connecting block (10) has a guide block (11) slidably sleeved inside, and the guide block (11) is fixedly connected to the connecting rod (7).

3. The insulation and arc protection device for a battery cell according to claim 1, characterized in that: The combined mechanism (8) includes a fixing block (81). The bottom of the sheath (4) is fixedly connected to the fixing block (81). The inside of the fixing block (81) is connected to a positive and negative screw (82) by a thread. The positive and negative screw (82) is rotatably connected to the connecting seat (6) by a bearing. Both ends of the positive and negative screw (82) are fixedly connected to knobs (83). The bottom of the fixing block (81) is fixedly connected to a slider (84). The slider (84) is slidably connected to the connecting seat (6). The inside of the slider (84) is slidably fitted with a guide rod (85). The guide rod (85) is fixedly connected to the connecting seat (6). The inside of the slider (84) is movably fitted with a ball (86). The ball (86) is slidably connected to the connecting seat (6).

4. The insulation and arc protection device for a battery cell according to claim 1, characterized in that: The connecting seat (6) has a groove (87) inside, and a ball bearing (86) is slidably connected inside the groove (87).

5. The insulation and arc protection device for a battery cell according to claim 1, characterized in that: The connecting mechanism (9) includes a retaining ball (93), which is movably sleeved inside the connecting block (10). A connecting column (91) is movably sleeved outside the retaining ball (93). The connecting column (91) is slidably connected to the connecting block (10). The connecting column (91) is fixedly connected to the connecting rod (7). A support block (94) is movably sleeved outside the retaining ball (93). The support block (94) is slidably connected to the connecting block (10). A fixing rod (95) is slidably sleeved inside the support block (94). The fixing rod (95) is fixedly connected to the connecting block (10). A spring (96) is provided on the outside of the fixing rod (95). A bouncing ball (97) is fixedly connected to the outside of the support block (94). The bouncing ball (97) is fixedly connected to the connecting block (10).

6. The insulation and arc protection device for a battery cell according to claim 5, characterized in that: The connecting column (91) has a groove (92) inside, and a retaining ball (93) is movably fitted inside the groove (92).

7. The insulation and arc protection device for a battery cell according to claim 5, characterized in that: One end of the spring (96) is fixedly connected to the support block (94), and the other end of the spring (96) is fixedly connected to the connecting block (10).

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