Battery module with quick-release power interface

Abstract

The utility model relates to the technical field of battery modules, in particular to a battery module with a quick-release power interface, which comprises a shell, a cover body and a plurality of battery cells in the shell, a bus bar is arranged on the inner wall of an inner cavity close to a battery cell pole, and a pole body for external power supply is arranged at the front end of the shell. A connecting open groove with an upward opening is formed in the side, close to the pole body, of the shell, a conduction connecting column matched with the connecting open groove is arranged on the bottom end face of the cover body, the conduction connecting column is connected with the connecting open groove in an inserted mode, and the conduction connecting column abuts against the junction piece and is electrically connected with the pole body, so that the stability of circuit output of the battery module can be guaranteed; and meanwhile, when the battery module is disassembled and maintained, the confluence piece and the pole body can be disconnected by disassembling the cover body, so that the effect of quickly disassembling the battery module is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a battery module with a quick-release power interface. Background Art

[0002] A battery module is a battery combination in which battery cells are connected in series, parallel or series-parallel, and there is only a pair of positive and negative output terminals. It also includes components such as a housing, a management and protection device, etc.

[0003] According to the Chinese invention patent with the existing publication number CN111279522A, a battery module and a battery pack with a bus bar are described. It improves weldability by reducing current loss during the welding between the bus bar and the electrode terminal of the cylindrical battery unit. In the existing battery modules, generally, multiple battery cells are connected in series and parallel through bus bars or bus bars, and the bus bar is welded to the connection pole provided on the housing of the battery module to complete the assembly of the entire battery module.

[0004] Although the above structure has good electrical connection stability in the welding process, when the battery module ages or needs to be disassembled and repaired, it is necessary to damage the welding point between the bus bar and the connection pole. As a result, when disassembling and repairing the battery module, the number of parts to be replaced increases, and the repair cost remains high. Therefore, in view of these current situations, there is an urgent need to develop a battery module with a quick-release power interface to meet the actual use needs. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a battery module with a quick-release power interface to address the defect of the damaged bus bar and connection pole that need to be replaced when the battery module is disassembled and repaired.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] A battery module with a quick-release power interface includes a housing, a cover, and several battery cells inside the housing. The inside of the housing is an inner cavity for placing the battery cells. A bus bar is provided on the inner wall of the inner cavity near the pole of the battery cell for electrically connecting several battery cells. A pole body for external power supply is provided at the front end of the housing. An upward-opening connection slot is provided on one side of the housing near the pole body. One end of the pole body is disposed on one side of the inner wall of the connection slot, and one end of the bus bar is disposed on the other side of the inner wall of the connection slot. The bottom end surface of the cover is provided with a conduction connection column matching the connection slot. When the cover is covered on the top surface of the housing, the conduction connection column is inserted into the connection slot, and the conduction connection column abuts between the bus bar and the pole body for electrical connection.

[0008] In the above description, as a further solution, one end of the bus bar near the connection slot is an extended pole piece, and the end of the extended pole piece is a resilient piece portion that is horizontally bent, and the resilient piece portion horizontally covers the inner wall of the connection slot.

[0009] In the above description, as a further solution, a pole hole for arranging a pole body is provided at one end of the housing, an extrusion spring is sleeved on the surface of the pole body, and the pole is movably connected inside the pole hole through the extrusion spring.

[0010] In the above description, as a further solution, the number of bus bars is two, and the two extended pole pieces are symmetrically arranged on the side walls of the inner cavity close to the cell pole columns respectively.

[0011] In the above description, as a further solution, a plurality of battery slots are provided on both the top end face and the bottom end face of the inner cavity. The cross section of the battery slot is an arc-shaped structure, and the plurality of battery slots are arranged in a linear array structure, and the cells are sequentially embedded in the inner wall of the battery slot.

[0012] In the above description, as a further solution, a plurality of "gully"-shaped card slots are provided on both side edges of the extended pole piece, and the extended pole piece cooperates with the battery slot through the card slots.

[0013] In the above description, as a further solution, a long strip-shaped buckle groove is provided at one end of the cover body away from the conduction connection column, and a buckle rib matching the buckle groove is provided at one end of the housing, and the buckle rib is buckled and connected with the buckle groove.

[0014] In the above description, as a further solution, a plurality of clearance holes are provided at one end of the cover body away from the buckle groove, a matching fixing threaded hole is provided at one end of the housing close to the clearance holes, and the cover body is fixedly screwed through the clearance holes with the fixing threaded holes by fixing bolts.

[0015] The beneficial effects produced by the present utility model are as follows:

[0016] For the battery module with a quick-disassembly power interface of the present application, a connection slot for accommodating the electrical contacts of the bus bar and the pole body is provided inside the housing, and a split design is adopted to avoid the structure in which the pole bodies between the bus bars are welded together. At the same time, the conduction connection column protruding from the cover body abuts between the bus bar and the pole body, and a stable electrical connection structure can be formed. On the one hand, the stability of the circuit output of the battery module can be ensured. On the other hand, during disassembly and maintenance, the bus bar and the pole body can be disconnected by removing the cover body, achieving the effect of quickly disassembling the battery module. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the battery module with a quick-disassembly power interface according to the present utility model;

[0018] Figure 2 It is a structural decomposition schematic diagram of the battery module with a quick-release power interface according to the present utility model;

[0019] Figure 3 is Figure 3 a partially enlarged structural schematic diagram of B in

[0020] Figure 4 It is a structural schematic diagram of the cover body of the present utility model from the bottom perspective;

[0021] Figure 5 It is a cross-sectional structural schematic diagram of the battery module with a quick-release power interface according to the present utility model;

[0022] Figure 6 is Figure 5 a partially enlarged structural schematic diagram of C in

[0023] In the figure: 1 - housing, 11 - inner cavity, 111 - battery slot, 12 - connection slot, 13 - threaded connection hole, 14 - pole post hole, 15 - snap rib, 2 - cover body, 21 - clearance hole, 22 - snap groove, 23 - conduction connection post, 3 - bus bar, 31 - extension pole piece, 32 - card slot, 311 - elastic piece part, 4 - fixing bolt, 5 - pole post body, 51 - compression spring. Specific embodiments

[0024] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present utility model. The present utility model will be described in detail below with reference to the accompanying drawings.

[0025] Please refer to Figures 1-6 , the battery module with a quick-release power interface implemented specifically includes a housing 1, a cover body 2, and a plurality of battery cells inside the housing 1. The inside of the housing 1 is an inner cavity 11 for placing the battery cells. A bus bar 3 is provided on the inner wall of the inner cavity 11 close to the pole posts of the battery cells. The bus bar 3 is used for electrically connecting a plurality of battery cells. A pole post body 5 for external power supply is provided at the front end of the housing 1. A connection slot 12 with an upward opening is provided on one side of the housing 1 close to the pole post body 5. One end of the pole post body 5 is arranged on one side of the inner wall of the connection slot 12, and one end of the bus bar 3 is arranged on the other side of the inner wall of the connection slot 12. A conduction connection post 23 matching the connection slot 12 is provided on the bottom end surface of the cover body 2. When the cover body 2 covers the top end surface of the housing 1, the conduction connection post 23 is inserted into the connection slot 12, and the conduction connection post 23 abuts between the bus bar 3 and the pole post body 5 for electrical connection.

[0026] By providing a connection slot 12 for accommodating the electrical contacts of the bus bar 3 and the pole body 5 inside the housing 1 and adopting a split design, it is possible to avoid the structure where the pole bodies 5 between the bus bars 3 are welded together. At the same time, by the conduction connection post 23 protruding from the cover body 2 being abutted between the bus bar 3 and the pole body 5, a stable electrical connection structure can be formed. On the one hand, it can ensure the stability of the battery module circuit output. On the other hand, during disassembly and maintenance, by removing the cover body 2, the bus bar 3 and the pole body 5 can be disconnected, achieving the effect of quickly disassembling the battery module.

[0027] Specifically, as Figure 2 and Figure 6 shown, one end of the bus bar 3 close to the connection slot 12 is an extended pole piece 31, and the end of the extended pole piece 31 is a horizontally bent elastic piece portion 311. The elastic piece portion 311 horizontally covers the inner wall of the connection slot 12. One end of the housing 1 is provided with a pole hole 14 for setting the pole body 5, and an extrusion spring 51 is sleeved on the surface of the pole body 5. The pole body 5 is movably connected inside the pole hole 14 through the extrusion spring 51. By setting the end of the extended pole piece 31 as a horizontally bent elastic piece portion 311 and at the same time sleeving an extrusion spring 51 on the surface of the pole body 5, when the conduction connection post 23 is inserted into the connection slot 12, the conduction connection post 23 can extrude outward towards the elastic piece portions 311 on both sides and the pole body 5, and the extrusion spring 51 sleeved on the surfaces of the elastic piece portion 311 and the pole body 5 is compressed, and can continuously provide an inward clamping force to the conduction connection post 23, so that the elastic piece portion 311, the pole body 5 and the conduction connection post 23 form a stable electrical connection structure.

[0028] Specifically, as Figure 2 and Figure 5 shown, the number of bus bars 3 is two, and the two extended pole pieces 31 are symmetrically arranged on the side walls of the inner cavity 11 close to the battery poles respectively. A plurality of battery slots 111 are provided on the top and bottom end faces of the inner cavity 11. The cross-section of the battery slot 111 is an arc structure, and the plurality of battery slots 111 are arranged in a linear array structure. The battery cells are sequentially embedded in the inner walls of the battery slots 111. A plurality of "gully" - shaped card slots 32 are provided on both side edges of the extended pole piece 31, and the extended pole piece 31 cooperates with the battery slots 111 through the card slots 32.

[0029] The inner cavity 11 is provided with a number of battery slots 111 having an arc-shaped cross-section, which can be applied to battery modules with quick-release power interfaces arranged in a linear array structure. A number of battery cells are sequentially embedded in the inner walls of the battery slots 111, which can reduce the investment in battery cell brackets. At the same time, the battery cells can be stably fixed inside the battery module with a quick-release power interface. At the same time, a number of "groove" - shaped card slots 32 are provided at the edges of the battery cell poles, which can effectively prevent the extension electrode sheet 31 from being displaced and misaligned inside the inner cavity 11.

[0030] One end of the cover body 2 away from the conduction connection column 23 is provided with a long strip-shaped buckle groove 22. One end of the housing 1 is provided with a buckle rib 15 matching the buckle groove 22. The buckle rib 15 and the buckle groove 22 are buckled and connected. A number of clearance holes 21 are opened at one end of the cover body 2 away from the buckle groove 22. A matching fixed threaded hole is opened at one end of the housing 1 close to the clearance holes 21. The cover body 2 is fixedly screwed through the clearance holes 21 with the fixed bolts 4 and the fixed threaded holes.

[0031] When disassembling the battery module, by rotating the fixed bolt 4 to separate the fixed bolt 4 from the fixed threaded hole, and at the same time flipping along the buckle rib 15 and the buckle groove 22 as the rotation axis, the conduction connection column 23 inserted into the connection slot 12 can be separated from the elastic sheet part 311 and the pole body 5, so as to disconnect the electrical conduction structure inside the battery module, achieving the effect of quick disassembly.

[0032] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention is disclosed above in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical means of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A battery module with a quick-release power interface, comprising a shell, a cover, and a plurality of cells inside the shell, wherein the interior of the shell is an inner cavity for placing the cells, a busbar is provided on the inner wall of the inner cavity close to the cell pole, and the busbar is used for electrical connection of the plurality of cells, and a pole body for external power supply is provided at the front end of the shell, characterized in that: A connecting slot opening upward is provided on one side of the shell body close to the pole body, one end of the pole body is arranged on one side of the inner wall of the connecting slot, one end of the bus bar is arranged on the other side of the inner wall of the connecting slot, and a conductive connecting column matching the connecting slot is provided on the bottom end surface of the cover body. When the cover body is covered on the top end surface of the shell body, the conductive connecting column is plugged into the connecting slot, and the conductive connecting column abuts against the bus bar and the pole body for electrical connection.

2. The battery module with a quick-release power interface according to claim 1, characterized in that: One end of the busbar close to the connecting slot is an extended pole piece, and the end of the extended pole piece is a horizontally bent spring piece portion, which horizontally covers the inner wall of the connecting slot.

3. The battery module with a quick-release power interface according to claim 2, characterized in that: One end of the shell is provided with a pole hole for arranging a pole body, a pressing spring is sleeved on the surface of the pole body, and the pole is movably connected to the inside of the pole hole through the pressing spring.

4. The battery module with a quick-release power interface according to claim 3, characterized in that: There are two busbars, and the two extended pole pieces are symmetrically arranged on the side walls of the inner cavity close to the battery cell poles.

5. The battery module with a quick-release power interface according to claim 4, characterized in that: The top end surface and the bottom end surface of the inner cavity are both provided with a plurality of battery slots, the cross-section of the battery slots is an arc-shaped structure, and the plurality of battery slots are distributed in a linear array structure, and the battery cells are sequentially embedded in the inner wall of the battery slots.

6. The battery module with a quick-release power interface according to claim 5, characterized in that: The edges of both sides of the extended pole piece are provided with a plurality of "gully"-shaped slots, and the extended pole piece cooperates with the battery slot through the slots.

7. The battery module with a quick-release power interface according to any one of claims 1 to 6, characterized in that: An elongated buckle groove is arranged at one end of the cover body away from the conductive connection column, and a buckle convex rib matching the buckle groove is arranged at one end of the shell body, and the buckle convex rib is buckled and connected with the buckle groove.

8. The battery module with a quick-release power interface according to claim 6, characterized in that: The cover body is provided with a plurality of avoidance holes at one end away from the buckle groove, and a matching fixing threaded hole is provided at one end of the shell body close to the avoidance hole. The cover body is threadedly fixed to the fixing threaded hole by fixing bolts passing through the avoidance holes.

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