Battery pack equalization detection tool

Abstract

The utility model discloses a battery pack equalization detection tool comprising a door-shaped member, the door-shaped member comprises a crossbeam, the crossbeam is provided with a slide rail along the length direction, the slide rail is internally provided with at least one conductive connecting piece, and the conductive connecting piece comprises a pair of conductive bolts and a jacking piece; the top of the conductive bolt is in threaded connection with a first sliding block. The jacking piece comprises a first adjusting bolt, a first cushion block arranged at the bottom of the first adjusting bolt, and a second sliding block in threaded connection with the top of the first adjusting bolt; the first sliding block and the second sliding block are the same in structure and can slide back and forth in the sliding rail in a limited mode. According to the utility model, the slidable conductive connecting piece is connected with the battery core pole in the battery module, so that the communication between the single battery in the module and an external lead is realized. A cross beam in the door-shaped component is provided with a sliding rail which is in sliding connection with the conductive connecting piece, so that the conductive connecting piece can be conveniently moved to a target battery cell to realize conduction with the battery cell.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production, and in particular to a battery pack equalization testing tool. Background Technology

[0002] After batteries are welded into battery modules, they are placed in a casing for charging and discharging performance tests, depending on the battery pack type. This is to verify the battery pack's qualification, with the discharge energy as the criterion. Due to individual differences in each battery, the voltage and capacity of each cell will vary during use (this difference increases with environment and time). During the charging and discharging process, due to the "weakest link" effect, low-capacity and high-capacity cells will limit the overall charging and discharging of the battery pack, leading to large voltage differences between cells and low capacity (unqualified) issues, ultimately rendering the entire battery pack unusable. To solve this problem, it is necessary to improve the consistency between batteries, that is, to balance the low-capacity and high-capacity cells in the battery pack. The cutoff condition for fully charging and discharging the battery pack during charging and discharging is the battery voltage. The purpose of balancing is to improve the voltage consistency of each cell in the battery pack, thereby increasing the overall capacity of the battery pack.

[0003] Modern battery packs connect individual batteries in series or parallel by busbars. Once the battery packs are welded together, the overall positive and negative charges of the battery pack can be charged and discharged as a whole by fixing the busbars and bolts. However, individual batteries or multiple batteries cannot be connected to external wires, making it difficult to charge and discharge individual or multiple batteries. Utility Model Content

[0004] The purpose of this invention is to provide a battery pack equalization testing fixture as an intermediate medium to solve the charging and discharging problems of single or multiple batteries in a module.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a battery pack equalization testing fixture, including a gate-shaped component. The gate-shaped component includes a crossbeam, and the crossbeam is provided with a slide rail along its length. At least one conductive connector is provided in the slide rail. The conductive connector includes a pair of conductive bolts and a clamping member. The top of the conductive bolt is threadedly connected to a first slider. The clamping member includes a first adjusting bolt, a first pad at the bottom of the first adjusting bolt, and a second slider threadedly connected to the top of the first adjusting bolt. The first slider and the second slider have the same structure and can both slide back and forth in a restricted manner in the slide rail.

[0007] A further embodiment: The portal frame component also includes support rods located at both ends of the crossbeam and abutment members radially connected to the bottom end of the support rods.

[0008] A further embodiment: The clamping element includes a second adjusting bolt bolted to the support rod bolt and a second pad block disposed at the bottom of the second adjusting bolt.

[0009] A further embodiment: the top of the support rod passes through the slide rail, and a threaded hole is provided at the top of the support rod; multiple adjustment holes are spaced apart on the crossbeam, and the support rod and the crossbeam are connected by a third adjustment bolt passing through the adjustment holes and the threaded hole.

[0010] A further solution: the clamping element is located between the two conductive bolts.

[0011] A further option: the number of conductive connectors is two.

[0012] A further solution: the first pad is made of insulating material.

[0013] A further solution: Both the first adjusting bolt and the conductive bolt are wing bolts.

[0014] A further option: the second adjusting bolt is a wing bolt.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a gate-shaped component for support, combined with a sliding conductive connector that connects to the battery cell terminals in the battery module, enabling communication between a single battery in the module and external wires. The crossbeam of the gate-shaped component is equipped with a slide rail, which slides with the conductive connector, facilitating the movement of the connector to the target battery cell and establishing electrical connection. The adjustable-width gate-shaped component is suitable for battery modules of different sizes and models, offering strong versatility. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a perspective view of the present invention;

[0019] Figure 3 , Figure 4 This is a schematic diagram of the installation of this utility model;

[0020] In the diagram: 1-Gate-shaped component, 11-Crossbeam, 111-Slide rail, 112-Adjusting hole, 12-Support rod, 13-Securing component, 131-Second adjusting bolt, 132-Second pad, 2-Conductive connector, 21-Conductive bolt, 211-First slider, 22-Securing component, 221-First adjusting bolt, 222-First pad, 223-Second slider, 3-Battery module, 4-Terminal post, 5-Third adjusting bolt. 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] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Please see Figure 1-2 In this embodiment, a battery pack equalization testing fixture includes a gate-shaped component 1. The gate-shaped component 1 includes a crossbeam 11, support rods 12 mounted at both ends of the crossbeam 11, and a clamping member 13 radially movably connected to the bottom end of the support rods 12. The gate-shaped component 1 can be mounted on a battery module 3, and the clamping member 13 clamps against both sides of the battery module 3. The crossbeam 11 has a slide rail 111 along its length, and at least one conductive connector 2 is provided in the slide rail 111. The conductive connector 2 includes a pair of conductive bolts 21 and a clamping member 22. The conductive bolts 21 are connected to the cell terminals, and then alligator clips are used to connect individual batteries in the module to external wires. Both the conductive bolts 21 and the clamping member 22 are designed to slide freely. The principle of the sliding structure is as follows:

[0024] The conductive bolt 21 has a first slider 211 threadedly connected to its top; the clamping member 22 includes a first adjusting bolt 221, a first pad 222 located at the bottom of the first adjusting bolt 221, and a second slider 223 threadedly connected to the top of the first adjusting bolt 221; the first slider 211 and the second slider 223 have the same structure and can both slide back and forth in a restricted manner in the slide rail 111.

[0025] The sliding conductive connector 2 is suitable for various sizes and models of battery modules and is easy to operate.

[0026] Furthermore, the clamping member 13 includes a second adjusting bolt 131 bolted to the support rod 12 and a second pad 132 disposed at the bottom of the second adjusting bolt 131. By rotating the second adjusting bolt 131, the second pad 132 is pressed against both sides of the module. Preferably, the second pad 132 is made of bakelite.

[0027] Furthermore, the first slider 211 is a square component, and the slide rail 111 can be configured as two parallel C-shaped plates with the slots of the C-shaped plates facing each other. The square component is accommodated in the slot and matches the inner contour of the slot.

[0028] Furthermore, the top end of the support rod 12 is accommodated in the slide rail 111 and can slide freely, and the top of the support rod 12 has a threaded hole; multiple adjustment holes 112 are spaced apart on the crossbeam 11, and the support rod 12 and the crossbeam 11 are connected by a third adjustment bolt 5 passing through the adjustment hole 112 and the threaded hole. The support rod 12 corresponds to different adjustment holes 112, so that the distance between the two support rods 12 can be adjusted, thereby adapting to battery modules of different sizes.

[0029] Furthermore, the clamping member 22 is positioned between the two conductive bolts 21. There are two conductive connectors 2.

[0030] Furthermore, the first pad 222 is made of insulating material, preferably bakelite.

[0031] Furthermore, the first adjusting bolt 221, the conductive bolt 21, and the second adjusting bolt 131 are all wing bolts, which are easy to tighten by hand and are not easy to loosen.

[0032] Please continue reading. Figure 3-4 First, assemble the gate-shaped component 1 according to the size and model of the battery module 3. Move the support rod 12 to the corresponding adjustment hole 112, and pass the third adjustment bolt 5 through the adjustment hole 112 and the threaded hole of the support rod 12 to fix the position of the support rod. Place the assembled gate-shaped component 1 on the battery module 3. Rotate the first adjustment bolt 221 so that the first pad 222 at its bottom is pressed against the top surface of the battery module 3, while ensuring that the crossbeam 11 remains horizontal. Then, pre-tighten the second adjustment bolt 131 so that it is pressed against both sides of the battery module 3, thus fixing the gate-shaped component 1 on the battery module 3. Rotate the conductive bolt 21 so that its bottom abuts against the cell terminal 4, and then connect it to the top of the conductive bolt 21 through the alligator clip to realize the connection between the individual battery in the module and the external wires.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A battery pack equalization testing fixture, characterized in that, The system includes a portal frame component (1), which includes a crossbeam (11). The crossbeam (11) has a slide rail (111) along its length. The slide rail (111) has at least one conductive connector (2). The conductive connector (2) includes a pair of conductive bolts (21) and a clamping member (22). The top of the conductive bolts (21) is threadedly connected to a first slider (211). The clamping member (22) includes a first adjusting bolt (221), a first pad (222) at the bottom of the first adjusting bolt (221), and a second slider (223) threadedly connected to the top of the first adjusting bolt (221). The first slider (211) and the second slider (223) have the same structure and can slide back and forth in the slide rail (111) in a restricted manner.

2. The battery pack equalization testing fixture according to claim 1, characterized in that, The portal frame component (1) also includes support rods (12) at both ends of the crossbeam (11) and abutment members (13) radially connected to the bottom end of the support rods (12).

3. The battery pack equalization testing fixture according to claim 2, characterized in that, The clamping member (13) includes a second adjusting bolt (131) bolted to the support rod (12) and a second pad (132) disposed at the bottom of the second adjusting bolt (131).

4. The battery pack equalization testing fixture according to claim 2, characterized in that, The top end of the support rod (12) passes through the slide rail (111), and the top end of the support rod (12) is provided with a threaded hole; a plurality of adjustment holes (112) are provided on the crossbeam (11) at intervals, and the support rod (12) and the crossbeam (11) are connected by a third adjustment bolt (5) that passes through the adjustment hole (112) and the threaded hole.

5. The battery pack equalization testing fixture according to claim 1, characterized in that, The clamping member (22) is located between the two conductive bolts (21).

6. The battery pack equalization testing fixture according to claim 1, characterized in that, The number of conductive connectors (2) is two.

7. The battery pack equalization testing fixture according to claim 1, characterized in that, The first pad (222) is made of insulating material.

8. The battery pack equalization testing fixture according to claim 1, characterized in that, The first adjusting bolt (221) and the conductive bolt (21) are both wing bolts.

9. The battery pack equalization testing fixture according to claim 3, characterized in that, The second adjusting bolt (131) is a wing bolt.

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