Anti-collision lithium battery pack

Abstract

The utility model relates to the technical field of lithium battery packs, and particularly discloses an anti-collision lithium battery pack which comprises a lithium battery pack body, a first connector and a second connector, the lithium battery pack body is connected with the first connector, a power connection rod is arranged in the second connector, and a power connection groove matched with the power connection rod is formed in the first connector; the electricity connection rod is connected with the second connector shell through a zigzag line. The electricity connection rod is connected with the fixing piece through the sleeve. According to the lithium battery pack, the first connector and the second connector on the lithium battery pack body are in circuit connection through the power connection groove and the power connection rod, the second connector shell and the power consumption equipment connected with the second connector shell can slide relative to the power connection rod, and force borne by the lithium battery pack body in the collision process is not prone to falling off. The first connector and the second connector are buffered under the action of components such as the second connector shell and the buffer spring, direct pulling between the power connection groove and the power connection rod is avoided, and circuit connection between the first connector and the second connector is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery packs, and particularly relates to an anti-collision lithium battery pack. Background Art

[0002] A lithium battery pack is a primary battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. During the use of the lithium battery pack, mechanical abuses such as external force collision, extrusion, and puncture will cause structural deformation, internal short circuit, electrolyte leakage and other failures inside the lithium battery pack, leading to serious consequences such as thermal runaway, combustion, and explosion. Therefore, it is necessary to enhance the anti-collision performance of the lithium battery pack.

[0003] In the Chinese patent with the publication number CN 219626810 U, the utility model sets multiple groups of equally spaced and angle-adjustable support rods between the partition board and the protection board. The balance between the spring rebound force and the impact force is used to slow down the moving speed of the protection board. Then, by using the characteristics of the first elastic block and the second elastic block, the impact force received by the partition board is further weakened, thereby improving the anti-collision strength of the lithium battery pack;

[0004] However, after the lithium battery pack is connected to a power-consuming device and is collided, the generated pulling force will pull the two connectors connecting the lithium battery pack and the power-consuming device, resulting in connection looseness and poor circuit contact at the two connectors. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an anti-collision lithium battery pack to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions, including a lithium battery pack body, a first connector, and a second connector. The lithium battery pack body is connected to the first connector. A power connection rod is arranged in the second connector, and a power connection groove cooperating with the power connection rod is arranged in the first connector;

[0007] The power connection rod is connected to the second connector housing through a zigzag line;

[0008] The power connection rod is connected to a fixing member through a sleeve. The fixing member is slidably connected to a moving groove in the second connector housing. A fixing mechanism is installed on the fixing member, and the fixing mechanism is used to fix or loosen the fixing member and the first connector.

[0009] Preferably, when the power connection rod is inserted into the power connection groove, the outer wall of the sleeve fits with the inner wall of the power connection groove, and the sleeve is made of an insulating material.

[0010] Preferably, the fixing mechanism includes a fixing bolt. The fixing bolt is inserted into a fixing plate, and a threaded hole cooperating with the fixing bolt is arranged in the first connector.

[0011] Preferably, an elastic hook plate is arranged inside the second connector head, a sliding groove is arranged inside the first connector head, and a clamping block is slidably installed inside the sliding groove.

[0012] Preferably, the clamping block is arranged in an inverted T-shaped structure, end plates are provided at both ends of the sliding groove to block the clamping block, and a buffer spring is connected between the clamping block and the inner wall of the sliding groove.

[0013] Preferably, an embedding block is arranged at one end of the elastic hook plate away from the second connector head, an embedding groove is arranged at the position corresponding to the embedding block on the clamping block, and the embedding groove is arranged on the side of the clamping block away from the second connector head.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the present utility model, the first connector head and the second connector head on the lithium battery pack body are electrically connected through the power connection groove and the power connection rod. The second connector housing and the power-consuming device connected thereto can slide relative to the power connection rod. The force received during the collision of the lithium battery pack body is buffered by components such as the second connector housing and the buffer spring, avoiding direct pulling between the power connection groove and the power connection rod, and the electrical connection between the first connector head and the second connector head is relatively stable. Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the present utility model.

[0017] Figure 2 It is one of the split diagrams of the first connector head and the second connector head in the present utility model.

[0018] Figure 3 It is the second split diagram of the first connector head and the second connector head in the present utility model.

[0019] Figure 4 It is one of the internal structural schematic diagrams of the first connector head and the second connector head in the present utility model.

[0020] Figure 5 It is the second internal structural schematic diagram of the first connector head and the second connector head in the present utility model.

[0021] In the figure: 1. Lithium battery pack body; 2. First connector head; 201. Power connection groove; 202. Clamping block; 203. Sliding groove; 204. Buffer spring; 3. Second connector head; 301. Power connection rod; 302. Zigzag line; 303. Second connector housing; 304. Sleeve; 305. Fixing part; 306. Fixing bolt; 307. Elastic hook plate; 308. Embedding block. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figures 1-5 , an anti-collision lithium battery pack includes a lithium battery pack body 1, a first connector 2, and a second connector 3. The lithium battery pack body 1 is connected to the first connector 2, and the first connector 2 is connected to a peripheral power-consuming device through the second connector 3. A power connection rod 301 is provided in the second connector 3, and a power connection groove 201 matching the power connection rod 301 is provided in the first connector 2. After the power connection rod 301 is completely inserted into the power connection groove 201, a connected circuit is formed;

[0024] In a further embodiment, the power connection rod 301 is connected to the second connector housing 303 through a zigzag line 302. The length of the zigzag line 302 needs to be longer than the distance between the power connection rod 301 and the second connector housing 303, that is, this part of the wire is bent. In this way, the second connector housing 303 can slide relative to the first connector 2 by a certain distance. This distance is used to reduce the pulling force between the first connector 2 and the second connector 3, avoid the situation of poor contact due to plugging and unplugging at the connection position of the two, and at the same time reduce the pulling force on the connection points of the first connector 2 and the second connector 3;

[0025] Specifically, the power connection rod 301 is connected to a fixing member 305 through a sleeve 304. When the power connection rod 301 is inserted into the power connection groove 201, the outer wall of the sleeve 304 fits against the inner wall of the power connection groove 201. The sleeve 304 is made of an insulating material. The fixing member 305 is slidably connected to a moving groove in the second connector housing 303. A fixing mechanism is installed on the fixing member 305. The fixing mechanism is used to fix or release the fixing member 305 and the first connector 2. The fixing mechanism includes a fixing bolt 306. The fixing bolt 306 is inserted into a fixing plate, and a threaded hole matching the fixing bolt 306 is provided in the first connector 2;

[0026] After the lithium battery pack is connected to the power-consuming device, when it is collided, the pulling force generated will pull the two connectors between the lithium battery pack and the power-consuming device, resulting in loose connection and poor circuit contact at the two connectors. In order to solve the above problem, an elastic hook plate 307 is provided in the second connecting head 3. The elastic hook plate 307 has a certain elasticity. The side away from the second connecting head 3 can be lifted upward under the action of the squeezing force, and finally stuck on the side of the card block 202 away from the second connecting head 3. It can also be away from the card block 202 under the push of the finger. A slide groove 203 is provided in the first connector 2, and a block 202 is slidably installed in the slide groove 203. The block 202 is set to an inverted T-shaped structure. Both ends of the slide groove 203 are blocked by end plates, so that the block 202 will not be separated from the slide groove 203. A buffer spring 204 is connected between the block 202 and the inner wall of the slide groove 203. It should be noted that an embedding block 308 is provided at one end of the elastic hook plate 307 away from the second connector 3, and an embedding groove is provided at the position of the block 202 corresponding to the embedding block 308, and the embedding groove is provided on the side of the block 202 away from the second connector 3;

[0027] The lithium battery pack body 1 is connected to the power-consuming equipment through the first connecting head 2 and the second connecting head 3. During use, when the lithium battery pack body 1 is collided, it will pull the first connecting head 2, and the first connecting head 2 will pull the second connecting head 3, thereby causing the first connecting head 2 and the second connecting head 3 to be pulled at the connection position, which may easily cause the connection at the connection position to become loose. Therefore, a fixing member 305 is provided in the second connecting head 3, and the fixing member 305 is fixed to the first connecting head 2 by a fixing bolt 306, while the fixing member 305 and the second connecting head 3 can slide relative to each other. When the lithium battery pack body 1 collides, the pulling force generated on the first connecting head 2 will cause the second connector shell 303 to move compared to the fixing member 305, during which the zigzag line 302 connected thereto is expanded or further bent, thereby achieving the effect of unloading force, thereby reducing the pulling force on the connection position of the first connecting head 2 and the second connecting head 3 (i.e., reducing the pulling force at the relative position between the docking slot 201 and the connecting pole 301).

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

Claims

1. A collision-proof lithium battery pack, comprising a lithium battery pack body (1), a first connector (2), and a second connector (3), characterized in that, The lithium battery pack body (1) is connected to the first connector (2). An electricity connecting rod (301) is arranged in the second connector (3), and an electricity connecting groove (201) matching with the electricity connecting rod (301) is arranged in the first connector (2). The electricity connecting rod (301) is connected to the second connector housing (303) through a zigzag line (302). The electricity connecting rod (301) is connected to a fixing member (305) through a sleeve (304). The fixing member (305) is slidably connected to a moving groove in the second connector housing (303). A fixing mechanism is installed on the fixing member (305) and is used to fix or release the fixing member (305) and the first connector (2).

2. The anti-collision lithium battery pack according to claim 1, wherein, When the electricity connecting rod (301) is inserted into the electricity connecting groove (201), the outer wall of the sleeve (304) is attached to the inner wall of the electricity connecting groove (201), and the sleeve (304) is made of an insulating material.

3. The anti-collision lithium battery pack according to claim 1, characterized in that, The fixing mechanism includes a fixing bolt (306). The fixing bolt (306) is inserted into a fixing plate, and a threaded hole matching with the fixing bolt (306) is arranged in the first connector (2).

4. The anti-collision lithium battery pack according to claim 1, wherein An elastic hook plate (307) is arranged in the second connector (3), a sliding groove (203) is arranged in the first connector (2), and a clamping block (202) is slidably installed in the sliding groove (203).

5. The anti-collision lithium battery pack according to claim 4, wherein, The clamping block (202) is arranged in an inverted T-shaped structure. End plates are provided at both ends of the sliding groove (203) to block the clamping block (202). A buffer spring (204) is connected between the clamping block (202) and the inner wall of the sliding groove (203).

6. The anti-collision lithium battery pack according to claim 5, wherein, An embedding block (308) is arranged at one end of the elastic hook plate (307) away from the second connector (3). An embedding groove is arranged at a position corresponding to the embedding block (308) on the clamping block (202), and the embedding groove is arranged on the side of the clamping block (202) away from the second connector (3).

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