Battery pack module

Abstract

This invention provides a battery pack module, relating to the field of secondary battery technology, comprising a battery pack shell and a packaging cover. The packaging cover is embedded in the upper end of the battery pack shell, and a mounting plate is embedded in the front end of the battery pack shell. A lead plate and a connector are respectively provided at the front and rear ends of the mounting plate. Electrode ears are inserted into both ends of the connector, and a cable conduit is connected in series between the electrode ears. Several connectors are arranged at the front end of the lead plate, and a cable conduit is inserted through the connector. A welding lug connector is embedded in the cable conduit, and a connecting wire extends from the welding lug connector to the rear end of the cable conduit. A connecting terminal is inserted between the connecting wire and the cable conduit. Compared with the traditional electrode post connection method, the structural strength of the battery pack module in terms of the input and output structure is improved by welding the connecting wire to the electrode ear, thereby enhancing the circuit structure reliability of the hard-shell battery pack structure.

Description

Technical Field

[0001] This invention relates to the field of secondary battery technology, and more specifically, to battery pack modules. Background Technology

[0002] Lithium-ion batteries, as a new type of rechargeable battery, have advantages such as high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and environmental friendliness. They have broad application prospects in portable electrical appliances, power tools, large-scale energy storage, and electric transportation power supplies. Common lithium-ion batteries include soft-shell batteries and hard-shell batteries. The shell of a hard-shell battery is made of aluminum, stainless steel, or other metal materials. The shell includes a cover plate, a housing, and terminals installed on the cover plate. The terminals are used to make electrical connections with the cells inside the housing, thereby enabling the cells to flow with the external circuit. The existing battery pack structure adopts an integrated terminal structure, with the cells as the contact connection ends. The connection is completed by the pressure contact between the cells and the output components of the battery pack. The actual connection structure is limited by the outer packaging structure of the hard-shell battery. When the battery structure is affected by external forces, the cell connection ends are easily affected and open circuits occur, which in turn affects the normal use of the battery.

[0003] Based on this, the present invention provides an effective solution to the problem that the connection structure of the battery pack is limited by the packaging structure, the connection structure is unstable, and the traditional electrode connection structure affects the normal use of the battery pack. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the heat dissipation structure of the battery pack is limited and the heat dissipation efficiency of the traditional battery pack structure is low. In view of the problems existing in the prior art, a battery pack module is provided.

[0005] The purpose and effect of the present invention are achieved by the following specific technical means: a battery pack module, including a battery pack shell and an encapsulation cover plate, wherein the encapsulation cover plate is embedded in the upper end of the battery pack shell, and an insert plate seat is embedded in the front end of the battery pack shell. A lead wire plate and a connecting seat are respectively provided at the front and rear ends of the insert plate seat, and electrode ears are inserted into both the left and right ends of the connecting seat. A cable tube is connected in series between the electrode ears.

[0006] The front end of the conductor board has several connectors arranged in a row. A cable tube is installed through the connector. A welding lug connector is embedded in the cable tube. A connecting wire extends from the welding lug connector to the rear end of the cable tube. A connecting terminal is inserted between the connecting wire and the cable tube.

[0007] Furthermore, the battery pack casing contains a battery cell plate, and the electrode tabs at both ends are respectively connected to the positive and negative poles of the battery cell plate.

[0008] A further preferred embodiment: the connection terminal and the cable conduit have a serial port connection structure.

[0009] A further preferred embodiment: a rubber shielding sleeve is fitted around the connection point between the connecting wire and the connecting terminal, and the connecting wire and the shielding sleeve are slidably connected.

[0010] A further preferred embodiment: a limiting ring is provided at the connection between the connecting wire and the cable conduit, and the outer edge of the limiting ring matches the outer diameter of the shielding tube sleeve.

[0011] A further preferred embodiment: the connector is a rectangular tube structure, the connector is inserted into the conductor plate, and the connector can be separated from the conductor plate by pulling.

[0012] A further preferred embodiment: the cable conduit is a corrugated reed tube, and the front end of the cable conduit is fixed to the connector.

[0013] A further preferred embodiment: the welding lug connector is a copper welding disc, and the welding lug connector serves as the output end of the connecting wire.

[0014] The beneficial effects of this invention are:

[0015] 1. This battery pack, based on its rigid pack structure, uses connectors on a lead wire board as electrode extension connection structures. Specifically, the structure uses connecting terminals and ribbon cables to connect electrode ears and connecting wires, and the electrode ears serve as welding structures to the positive and negative electrodes of the cell board. The ribbon cable, connecting terminals, connecting wires, and welding ear connectors form the extension connection ports for the positive and negative electrodes of the cell board. In use, the welding ear connectors can be extended and connected to the output port structure of the battery pack to replace the traditional terminal post connection method, thus completing the electrode connection output of the battery pack. Compared with the traditional terminal post connection method, the welding ends of the connecting wires and electrode ears improve the structural strength of the battery pack module in terms of access and output structures, and enhance the circuit structure reliability of the rigid battery pack structure.

[0016] 2. The battery pack structure also features an extension structure connecting the wires and connectors, which allows for easy adjustment of the connection length of the welding lug connectors during battery pack installation by plugging and unplugging the connectors. This facilitates adaptation to different installation scenarios and avoids the limitation of traditional battery pack connection structures being restricted by rigid shell encapsulation structures, thus improving the practicality of the battery pack. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the conductor plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cable conduit of the present invention.

[0021] Figures 1-3 In the middle: 1. Battery pack outer shell, 2. Encapsulation cover plate, 3. Insert plate seat, 4. Cell board, 5. Connector seat, 6. Lead wire board, 7. Connector head, 8. Cable tube, 9. Connecting wire, 10. Limiting ring, 11. Connecting terminal, 12. Electrode ear, 13. Cable tube, 14. Welding ear connector. Detailed Implementation

[0022] To better understand the above-mentioned objects, features, and advantages of the present invention, the following description is provided in conjunction with the accompanying drawings. Figures 1-3 The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the scope of patent protection of the present invention.

[0023] The battery pack module includes a battery pack shell 1 and a packaging cover 2. The packaging cover 2 is embedded in the upper end of the battery pack shell 1. A plate seat 3 is embedded in the front end of the battery pack shell 1. A wire plate 6 and a connecting seat 5 are respectively provided at the front and rear ends of the plate seat 3. Electrode ears 12 are inserted into both the left and right ends of the connecting seat 5. A cable tube 13 is connected in series between the electrode ears 12.

[0024] The battery pack housing 1 contains a cell board 4, and the electrode ears 12 at both ends are connected to the positive and negative poles of the cell board 4 respectively. The electrode ears 12 extended at both ends of the connector 5 serve as welding connection ports for the positive and negative poles of the cell board 4. The electrode ears 12 and the cell board 4 are connected by welding. At the same time, the connector terminal 11 and the cable tube 13 are connected by a serial port structure. The output of the electrode ear 12 is forwarded to each connector terminal 11 in series to expand the output ports of the battery pack module.

[0025] The front end of the conductor board 6 has several connectors 7 arranged in a row. A cable tube 8 is installed through the connector 7. A welding lug connector 14 is embedded in the cable tube 8. A connecting wire 9 extends from the welding lug connector 14 to the rear end of the cable tube 8. A connecting terminal 11 is inserted between the connecting wire 9 and the cable tube 13.

[0026] Furthermore, a rubber shielding sleeve is fitted around the connection between the connecting wire 9 and the connecting terminal 11. The connecting wire 9 and the shielding sleeve are slidably connected. A limit ring 10 is provided at the connection between the connecting wire 9 and the cable tube 8. The outer edge of the limit ring 10 matches the outer diameter of the shielding sleeve. The welding lug connector 14 is a copper welding disc. The welding lug connector 14 serves as the output end of the connecting wire 9. Based on the above, the circuit of the battery board 4 connected by the electrode lug 12 will be forwarded to each connecting wire 9 through the cable tube 13 and the connecting terminal 11. When installing the battery pack module, the connection of the battery pack circuit is completed by welding the welding lug connector 14 in the connector 7 to the connection installation end. At the same time, the shielding sleeve covering the connection between the connecting wire 9 and the connecting terminal 11 is used to encapsulate and shield the connection structure between the connecting wire 9 and the connecting terminal 11, thereby improving the stability of the circuit.

[0027] Furthermore, connector 7 has a rectangular tube structure. Connector 7 is inserted into conductor plate 6, and connector 7 can be separated from conductor plate 6 by pulling. Cable tube 8 is a corrugated spring tube, and the front end of cable tube 8 is fixed to connector 7. When connecting and installing welding lug connector 14, connector 7 can be separated by plugging and unplugging to allow connector 7 to extend freely with connecting wire 9. Its extension structure is limited by limiting ring 10 to restrict the connection structure position of connecting wire 9 and shielding sleeve to ensure the strength of its extension structure. In addition, during the stretching movement, cable tube 8 acts as connector 7. The movable tension structure between the connector 7 and the connecting wire 9 is designed to accommodate the tension of the connector 7 and the connecting wire 9, and to reinforce the structure of the connector 7 and the connecting wire 9, thereby improving the strength of the tension structure. Compared with the traditional pole connection structure, this battery pack module extends the connection output port of the cell board 4 through the external connector 7, which facilitates the installation of the battery pack module by separating and welding the connector 7 to adapt to different installation scenarios. This avoids the limitations of the installation structure of traditional hard-shell battery packs during installation and use, and improves the practicality of the battery pack module.

Claims

1. A battery pack module, comprising a battery pack housing (1) and an encapsulation cover (2), wherein the encapsulation cover (2) is embedded in the upper end of the battery pack housing (1), characterized in that: The front end of the battery pack shell (1) is fitted with a plate seat (3), and the front and rear ends of the plate seat (3) are respectively provided with a wire plate (6) and a connecting seat (5). The left and right ends of the connecting seat (5) are each provided with an electrode ear (12), and a cable tube (13) is connected in series between the electrode ears (12). The battery pack casing (1) is fitted with a cell plate (4), and the electrode ears (12) at both ends are respectively connected to the positive and negative poles of the cell plate (4); The front end of the conductor plate (6) has a plurality of connectors (7), a cable tube (8) is provided through the connector (7), a welding lug connector (14) is embedded in the cable tube (8), and a connecting wire (9) extends from the welding lug connector (14) to the rear end of the cable tube (8), and a connecting terminal (11) is inserted between the connecting wire (9) and the cable tube (13). The cable tube (8) is a corrugated spring tube. The front end of the cable tube (8) is fixed to the connector (7). The connector (7) is a rectangular tube structure. The connector (7) is inserted into the conductor plate (6). The connector (7) can be separated from the conductor plate (6) by pulling. The welding lug connector (14) is a copper welding plate. The welding lug connector (14) serves as the output end of the connecting wire (9). The electrode lug (12) serves as the welding structure with the positive and negative electrodes of the battery cell board (4). The cable tube (13), the connecting terminal (11), the connecting wire (9) and the welding lug connector (14) serve as the extension connection ports of the positive and negative electrodes of the battery cell board (4).

2. The battery pack module according to claim 1, characterized in that: The connection terminal (11) and the cable tube (13) are connected by a serial port.

3. The battery pack module according to claim 1, characterized in that: A rubber shielding sleeve is fitted on the outside of the connection between the connecting wire (9) and the connecting terminal (11), and the connecting wire (9) and the shielding sleeve are slidably connected.

4. The battery pack module according to claim 3, characterized in that: A limiting ring (10) is provided at the connection between the connecting wire (9) and the cable conduit (8), and the outer edge of the limiting ring (10) matches the outer diameter of the shielding tube sleeve.

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