CN210224146U

CN210224146U - Battery module

Info

Publication number: CN210224146U
Application number: CN201920869302.0U
Authority: CN
Inventors: Guangqiang Liu; 刘广强; Qiaomei Jiang; 姜巧妹
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-03-31
Anticipated expiration: 2029-06-11

Abstract

The utility model provides a battery module, which comprises a side plate, an end plate, an electric core, a bus bar and a module output terminal, and is characterized in that the module output terminal comprises a copper terminal and a spring contact finger, the end plate is provided with a fixing device, the fixing device presses down the module output terminal to the bus bar, so that the module output terminal is electrically connected with the bus bar, the utility model reassembles a nickel sheet on the bus bar, the fixing device is arranged on the end plate to press down the copper terminal, and the spring contact finger is used to electrically connect the copper terminal and the nickel sheet, thereby directly avoiding the occurrence of welding points, avoiding the problem of easy heat generation due to the fragile welding points, simultaneously, the module output terminal is arranged at the top end of the whole battery module, avoiding the phenomenon of mutual interference between the module output terminal and a collection wire harness, because the output terminal is pressed down and fixed on the bus bar by the fixing device, convenient disassembly during secondary use and high utilization rate.

Description

Battery module

Technical Field

The utility model relates to a power battery makes the field, especially relates to a battery module.

Background

The battery pack of the electric automobile usually comprises a plurality of battery modules, the battery modules usually comprise a plurality of electric cores, in the traditional battery pack, the electric cores and the electric cores are mutually connected through an aluminum bus bar, the locking connection between the battery modules and the battery modules is realized through a copper bar or a copper wire, the current method is to ultrasonically weld the aluminum bus bar and a switching copper bar, the switching copper bar is locked with an external copper bar of the module, but the requirement of the actual situation on welding equipment is high, the ultrasonic welding joint of the aluminum bus bar and the switching copper bar is large in brittleness, cracks are easy to generate, the contact internal resistance is increased, the temperature is increased too fast in a working chamber of the battery module, the safety is low, the copper bar and the aluminum bus bar are welded together, the disassembly cannot be carried out, the recovery and the secondary utilization of the battery modules are not facilitated, the external copper bar is laterally locked on end plates of the battery modules, the external copper bar has, interference may be caused to reduce the reliability of the entire battery module.

Disclosure of Invention

Not enough to prior art, the utility model provides a battery module can avoid welding point department fragility big, the temperature is high, and battery module reutilization nature is poor, copper bar and collection pencil mutual interference scheduling problem.

The utility model provides a battery module, including curb plate, end plate, electric core, busbar and module output terminal, a serial communication port, module output terminal includes that copper terminal and spring touch indicate, the end plate is provided with fixing device, fixing device pushes down module output terminal extremely on the busbar, make module output terminal with the busbar electricity is connected.

As a further improvement of the present invention, the fixing device presses down the copper terminal.

As a further improvement of the present invention, a nickel plate is provided on the bus bar, the nickel plate is connected to the bus bar, and the output terminal is electrically connected to the bus bar.

As a further improvement of the utility model, the copper terminal is not in direct contact with the nickel sheet.

As a further improvement of the utility model, the spring touches to indicate the assembly to be in copper terminal bottom, the electricity is connected copper terminal reaches the nickel piece.

The utility model discloses reassembled the nickel piece on the busbar, set up fixing device and pushed down the copper terminal on the end plate to use the spring to touch and indicate the electricity to be connected the copper terminal and the nickel piece has directly avoidd the appearance of welding point, has avoided because of big, the easy heat-generating problem of welding point fragility, simultaneously, sets up module output terminal on the top of whole battery module, has avoided module output terminal and collection pencil to produce the phenomenon of mutual interference, because output terminal pushes down through fixing device and fixes to the busbar, disassembles the convenience during secondary use, and the high-usage.

Drawings

Fig. 1 is a schematic structural diagram of an output terminal portion of a battery module.

Fig. 2 is a schematic diagram of a structure of a copper terminal and a spring finger of a battery module.

Wherein 1 is a fixing device, 2 is a copper terminal, 3-bit spring contact fingers, 4 is a nickel sheet, and 5 is a bus bar.

Detailed Description

The present invention will be described in further detail below with reference to a specific embodiment thereof.

It is to be understood that like or similar designations in the drawings indicate like or similar elements and that the terms "upper", "lower", "left", "right", and the like, when used in relation to an orientation or position, are used merely for convenience in describing the drawings and do not imply that the invention must be designed in a particular orientation or position.

As shown in fig. 1 and 2, the novel design scheme of the battery module is provided, and the novel design scheme of the battery module comprises a side plate, an end plate, a battery core, a bus bar (5) and a module output terminal, wherein the module output terminal comprises a copper terminal (2) and a spring contact finger (3), a fixing device (1) is arranged on the end plate, the fixing device (1) presses down the whole module output terminal, the bottom end of the module output terminal is pressed and connected onto the bus bar (5), and the module output terminal is ensured to be electrically connected with the bus bar (5).

As shown in fig. 1, fig. 2, the utility model provides a pair of battery module design, busbar (5) and the part of module output pole department of meeting, be provided with nickel piece (4), nickel piece (4) cover the surface at busbar (5), can effectively prevent electrochemistry migration phenomenon, the spring touches and indicates (3) to set up the lower extreme at the copper terminal, fixing device (1) inside fixed slot height is slightly less than module output terminal's overall height, will be to push down whole module output terminal in the fixed slot is put into to module output terminal, when module output terminal receives fixing device (1) extrusion, push down the spring and touch and indicate (3) to press to nickel piece (4) on, touch through the spring and indicate (3) indirect connection copper terminal (2) and nickel piece, accomplish module output terminal and busbar (5) electricity and be connected.

As a specific embodiment of the present invention, as shown in fig. 1 and fig. 2, the copper terminal (3) is a hexagonal boss structure, the bottom of the boss is provided with a groove, the spring contact finger (2) is placed in the groove, the whole silver plating of the copper terminal (3) or the part contacting with the spring contact finger (2) is plated with silver, the spring contact finger (3) is made of copper or copper alloy, the spring contact finger (3) made of copper alloy needs to be plated with silver on the surface of the spring contact finger (3), and the nickel plate (4) is fixed on the busbar (5) by using a hot pressing process.

The following will specifically describe the mounting process of the entire battery module, mainly the mounting process of the module output terminals: after nickel sheet (4) hot pressing to busbar (5), use curb plate, the fixed whole battery module of end plate, be provided with fixing device (1) on the end plate, the spring touches and indicates (3) assembly in the recess of copper terminal (2) bottom, pushes module output terminal fixing device (1) from the right side, accomplishes module output terminal's installation.

It should be understood that the above-mentioned embodiments are only for convenience of understanding the detailed description of the present invention by those skilled in the art, and are not intended to limit the present invention to only one of the above-mentioned embodiments, and all technical solutions identical to the spirit and idea of the present invention belong to the protection scope of the present invention.

Claims

1. The utility model provides a battery module, includes curb plate, end plate, electric core, busbar and module output terminal, its characterized in that, module output terminal includes that copper terminal and spring touch indicate, the end plate is provided with fixing device, fixing device pushes down module output terminal extremely on the busbar, make module output terminal with the busbar electricity is connected.

2. The battery module according to claim 1, wherein: the fixing device presses down the copper terminal.

3. The battery module according to claim 1, wherein: and a nickel sheet is arranged on the bus bar, and the nickel sheet is electrically connected with the bus bar and the output terminal.

4. The battery module according to claim 3, wherein: the copper terminal is not in direct contact with the nickel plate.

5. The battery module according to claim 3, wherein: the spring contact finger is assembled at the bottom end of the copper terminal and electrically connected with the copper terminal and the nickel sheet.