Flexible busbar structure for lithium battery pack

Abstract

The utility model provides lithium battery PACK flexible confluence connecting piece structure belongs to lithium battery technical field, it solved the majority is through the mode of welding and connects fixed, once welding connection has the problem, maintenance and replacement part are relatively more complex, need to disassemble whole battery PACK to overhaul usually, increased maintenance cost and time's technical problem. Lithium battery PACK flexible confluence connecting piece structure, including frame, the frame top is installed with a plurality of batteries, a plurality of batteries top is provided with same apron, and four lock slots are evenly set in square, four lock slots inside all are equipped with the fixed establishment for fixing apron, apron top is seted up with a plurality of notches, a plurality of notches inside all slidingly connected have the confluence piece, a plurality of notches, confluence piece all with battery intercoordination setting, a plurality of confluence pieces both sides all are equipped with the restraint mechanism for the restraint confluence piece. In the utility model, through the setting of apron, can reduce the cost when electronic group maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, and relates to busbar connectors, particularly flexible busbar connector structures for lithium battery packs. Background Technology

[0002] A flexible busbar connector structure in a lithium-ion battery pack (PACK) refers to a conductive structure used to connect multiple individual battery cells. The main function of the busbar connector is to achieve electrical connections between the battery cells to generate the required voltage and current output. It is typically used to connect battery cells in series or parallel. Lithium-ion battery pack busbar connector structures are widely used in electric vehicles, energy storage systems, power tools, portable electronic devices, and other fields. With the development of battery technology, the design and materials of busbar connectors are constantly improving to meet higher performance requirements and safety standards.

[0003] However, most existing lithium battery pack busbar connectors are fixed by welding during installation. If the welding connection fails, repair and replacement of parts are relatively complicated, usually requiring disassembly of the entire battery pack for inspection, which increases maintenance costs and time. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flexible busbar connection structure for lithium battery packs. The technical problem this utility model aims to solve is that most connections are fixed by welding. Once a problem occurs in the welding connection, the repair and replacement of parts are relatively complex, usually requiring the disassembly of the entire battery pack for inspection, which increases maintenance costs and time.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible busbar connector structure for a lithium battery pack includes a frame on which multiple batteries are mounted. Each battery has a single cover plate on its top, and the cover plate and frame are designed to cooperate with each other. Four locking slots are evenly spaced in a square pattern on the surface of the frame near the cover plate. Each of the four locking slots contains a fixing mechanism for securing the cover plate. The top of the cover plate has multiple slots, each containing a slidable busbar connector. All slots and busbar connectors cooperate with the batteries. Both sides of each busbar connector have restraint mechanisms for constraining them. The cover plate design reduces the cost of electronic assembly maintenance.

[0007] As a further embodiment of this utility model, the fixing mechanism includes a connecting block, which is fixedly connected to the bottom of the cover plate and slidably connected to the top of the frame. A groove is formed on the surface of the connecting block near the locking groove, and a locking block is slidably connected inside the groove. The locking block and the locking groove are mutually cooperating. A support column is fixedly connected to the end of the locking block away from the battery, and the support column is slidably connected to one side of the groove. A pull plate is fixedly connected to the other end of the support column. A spring is sleeved on the surface of the support column near the groove. One end of the spring is fixedly connected to one side of the locking block, and the other end of the spring is fixedly connected to one side inside the groove. By setting the locking block, the cover plate can be fixed.

[0008] As a further embodiment of this utility model, the constraint mechanism includes a limiting rod, which is fixedly connected to the top of the cover plate. The busbar is slidably sleeved on the surface of the limiting rod. A tension spring is sleeved on the surface of the limiting rod near the cover plate. The top end of the tension spring is fixedly connected to the bottom of the busbar, and the bottom end of the tension spring is fixedly connected to the top of the cover plate. A connector is fixedly connected to the bottom of the busbar, and the connector is configured to cooperate with the battery. By setting the tension spring, the busbar can be constrained.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. This utility model adopts a technical solution of constraining the busbars with a cover plate, which can reduce the cost of electronic assembly maintenance. It effectively solves the problem that most connections are fixed by welding, and once the welding connection fails, the repair and replacement of parts are relatively complicated, usually requiring the disassembly of the entire battery pack for repair, which increases maintenance costs and time. Multiple slots are opened on the top of the cover plate, and busbars are installed in the slots. The busbars are designed to cooperate with the battery. Tension springs are installed on both sides of the busbars, and the other end of the tension springs is connected to the cover plate. So when the cover plate is connected to the frame, the busbars will also make close contact with the corresponding batteries, thereby achieving the purpose of fixed connection. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the flexible busbar connector for the lithium battery PACK proposed in this utility model.

[0012] Figure 2 This is a schematic diagram of the internal structure of the flexible busbar connector structure for lithium battery PACK proposed in this utility model.

[0013] Figure 3 This is a schematic diagram of the fixing mechanism of the flexible busbar connector structure of the lithium battery PACK proposed in this utility model;

[0014] Figure 4 for Figure 3 Enlarged structural diagram at point A in the diagram;

[0015] Figure 5 for Figure 3 A magnified structural diagram at point B in the diagram.

[0016] In the diagram: 1. Frame; 2. Cover plate; 3. Pull plate; 101. Lock groove; 102. Battery; 201. Slot; 202. Connecting block; 203. Busbar; 204. Connector; 205. Limiting rod; 206. Tension spring; 207. Slide groove; 301. Locking block; 302. Support column; 303. Spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1 - Figure 5 The flexible busbar connection structure of the lithium battery PACK includes a frame 1, on which multiple batteries 102 are mounted. The top of the multiple batteries 102 is provided with the same cover plate 2, and the cover plate 2 and the frame 1 are configured to cooperate with each other. Four locking grooves 101 are opened on the surface of the frame 1 near the cover plate 2, and the four locking grooves 101 are evenly arranged in a square shape. Each of the four locking grooves 101 is provided with a fixing mechanism for fixing the cover plate 2. Multiple slots 201 are opened on the top of the cover plate 2, and busbars 203 are slidably connected inside the multiple slots 201. The multiple slots 201 and busbars 203 are configured to cooperate with the batteries 102. The multiple busbars 203 are provided with a constraint mechanism on both sides for constraining the busbars 203. The use of the cover plate 2 can reduce the cost of electronic assembly maintenance.

[0019] Preferably, the fixing mechanism includes a connecting block 202, which is fixedly connected to the bottom of the cover plate 2 and slidably connected to the top of the frame 1. A sliding groove 207 is provided on the surface of the connecting block 202 near the locking groove 101. A locking block 301 is slidably connected inside the sliding groove 207. The locking block 301 and the locking groove 101 are mutually cooperated. A support column 302 is fixedly connected to the end of the locking block 301 away from the battery 102. The support column 302 is slidably connected to one side of the sliding groove 207. A pull plate 3 is fixedly connected to the other end of the support column 302. A spring 303 is sleeved on the surface of the support column 302 near the sliding groove 207. One end of the spring 303 is fixedly connected to one side of the locking block 301. The locking block 301 can be adjusted by the setting of the spring 303. The other end of the spring 303 is fixedly connected to one side inside the sliding groove 207. The cover plate 2 can be fixed by the setting of the locking block 301.

[0020] Preferably, the constraint mechanism includes a limiting rod 205, which is fixedly connected to the top of the cover plate 2. The busbar 203 is slidably sleeved on the surface of the limiting rod 205. A tension spring 206 is sleeved on the side of the limiting rod 205 near the cover plate 2. The top end of the tension spring 206 is fixedly connected to the bottom of the busbar 203, and the bottom end of the tension spring 206 is fixedly connected to the top of the cover plate 2. A connector 204 is fixedly connected to the bottom of the busbar 203, and the connector 204 is configured to cooperate with the battery 102. The busbar 203 can be constrained by the tension spring 206.

[0021] Working principle: In use, multiple batteries 102 are first placed into the frame 1 in sequence, and then the cover plate 2 is connected to the frame 1. A locking block 301 is installed inside the cover plate 2, and the locking block 301 is connected to the cover plate 2 by a spring 303. Due to the shape of the locking block 301, when it comes into contact with the frame 1, the frame 1 will squeeze the locking block 301, causing it to retract. A locking groove 101 is also provided on one side of the frame 1, and the locking groove 101 is adapted to the locking block 301. Therefore, as the cover plate 2 continues to move downwards, the locking block 301 will enter the locking groove 101 to prevent... During installation, cover plate 2 may shift. Once cover plate 2 is properly aligned with frame 1, it can be secured with bolts. Multiple slots 201 are provided on the top of cover plate 2, and each slot 201 contains a busbar 203. Each busbar 203 is designed to work in conjunction with a battery 102. Tension springs 206 are installed on both sides of each busbar 203, and the other end of each tension spring 206 is connected to cover plate 2. Thus, once cover plate 2 is connected to frame 1, the busbar 203 will also make close contact with the corresponding battery 102, thereby achieving a secure connection.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible busbar connector structure for a lithium battery pack, comprising a frame (1), characterized in that, Multiple batteries (102) are installed on the top of the frame (1). The top of the multiple batteries (102) is provided with the same cover plate (2), and the cover plate (2) and the frame (1) are configured to cooperate with each other. The surface of the frame (1) near the cover plate (2) is provided with four locking grooves (101), and the four locking grooves (101) are evenly arranged in a square shape. Each of the four locking grooves (101) is provided with a fixing mechanism for fixing the cover plate (2). The top of the cover plate (2) is provided with multiple slots (201), and each of the multiple slots (201) is slidably connected with a busbar (203). The multiple slots (201) and the busbars (203) are configured to cooperate with each other with the batteries (102). Each of the multiple busbars (203) is provided with a constraint mechanism for constraining the busbars (203) on both sides.

2. The flexible busbar connection structure for a lithium battery PACK according to claim 1, characterized in that, The fixing mechanism includes a connecting block (202), which is fixedly connected to the bottom of the cover plate (2) and slidably connected to the top of the frame (1). A sliding groove (207) is provided on the surface of the connecting block (202) near the lock groove (101).

3. The flexible busbar connection structure for a lithium battery PACK according to claim 2, characterized in that, A locking block (301) is slidably connected inside the slide groove (207). The locking block (301) and the locking groove (101) are configured to cooperate with each other. A support column (302) is fixedly connected to the end of the locking block (301) away from the battery (102). The support column (302) is slidably connected to one side of the slide groove (207).

4. The flexible busbar connection structure for a lithium battery PACK according to claim 3, characterized in that, The other end of the support column (302) is fixedly connected to a pull plate (3). A spring (303) is sleeved on the surface of the support column (302) near the slide groove (207). One end of the spring (303) is fixedly connected to one side of the lock block (301), and the other end of the spring (303) is fixedly connected to one side inside the slide groove (207).

5. The flexible busbar connection structure for a lithium battery PACK according to claim 4, characterized in that, The constraint mechanism includes a limiting rod (205), which is fixedly connected to the top of the cover plate (2). The busbar (203) is slidably sleeved on the surface of the limiting rod (205), and a tension spring (206) is sleeved on the side of the limiting rod (205) near the cover plate (2).

6. The flexible busbar connection structure for a lithium battery pack according to claim 5, characterized in that, The top end of the tension spring (206) is fixedly connected to the bottom of the busbar (203), the bottom end of the tension spring (206) is fixedly connected to the top of the cover plate (2), and the bottom of the busbar (203) is fixedly connected to a connector (204), and the connector (204) and the battery (102) are configured to cooperate with each other.

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