Top cover assembly of secondary battery, secondary battery and battery module
A secondary battery and top cover technology, which is applied to battery pack components, electrical components, circuits, etc., can solve the problems of reduced space utilization of battery modules, reduced energy density of battery modules, and high space occupied by conductive plates. Achieve the effect of simple structure, high energy density and simplified structure
Active Publication Date: 2019-05-07
CONTEMPORARY AMPEREX TECH CO
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
When connecting secondary batteries in series and parallel to form a battery module, busbars need to be welded to the conductive plate. Since the busbar and the flip plate are separated by the conductive plate, the conductive plate will occupy additional height space, which will make the battery module Reduced space utilization, thereby reducing the energy density of the battery module
Method used
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[0035] Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention; and, the dimensions of some structures may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the features, structures or c...
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Abstract
The invention provides a top cover assembly of a secondary battery, the secondary battery and a battery module. The top cover assembly comprises a top cover plate; a first electrode terminal which comprises a terminal plate, is arranged on one side of the top cover plate and is insulated from the top cover plate; a fixing member, an outer peripheral surface of the terminal plate being at least partially surrounded by the fixing member to fix the first electrode terminal to the fixing member, and the first electrode terminal being insulated from the top cover plate by the fixing member; a connecting part, wherein the fixed part is fixed on the top cover plate through the connecting part and is positioned on the same side as the terminal plate; a second electrode terminal which is electrically connected with the top cover plate; and a flip sheet attached to the top cover plate and configured to flip in response to an increase in pressure inside the secondary battery so as to enable the flip sheet to be electrically connected with a busbar located outside the secondary battery and connected to the terminal plate. Therefore, the height space occupied by the secondary battery can be reduced, the space utilization rate of the battery module is improved, and the energy density of the battery module is further improved.
Description
technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a top cover assembly of a secondary battery, a secondary battery and a battery module. Background technique [0002] At present, the secondary battery generally adopts a square hard shell structure. The secondary battery shell includes a shell and a top cover assembly. The secondary battery shell provides a closed space to accommodate the electrode assembly and the electrolyte. The electric energy of the electrode assembly passes through the top cover assembly. The pole is drawn out from the enclosed space to the outside of the enclosed space. [0003] In the existing top cover plate assembly, the top cover plate is a metal plate with a through hole, the pole is divided into a base part and an extension part, and the cross-sectional area of the base part is larger than the diameter of the through hole. During assembly, the base part is located below the top cove...
Claims
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IPC IPC(8): H01M2/04H01M2/30H01M2/34H01M50/147H01M50/547H01M50/578
CPCY02E60/10
Inventor 李全坤
Owner CONTEMPORARY AMPEREX TECH CO