Cover plate for power battery, power battery using cover plate, and production method for cover plate
A technology of power battery and cover plate, which is applied in the directions of battery cover/end cover, small-size battery/battery pack, large-size battery/battery pack, etc. Potential safety hazards, low energy density of single cells, etc., to achieve good sealing performance, prolong effective life, and reduce mass
Pending Publication Date: 2018-05-18
HUIZHOU TOPBAND ELECTRICAL TECH CO LTD
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Problems solved by technology
[0002] With the rapid development of new energy sources, lithium-ion batteries are widely used in related fields such as electric tools, new energy vehicles, and grid energy storage. The requirements for higher safety performance are becoming more and more intense. However, the performance of power batteries in practical applications often has deficiencies in this aspect, mainly in three aspects: the energy density of a single cell is small, and the design of the battery system is complex. , Potential safety hazards caused by the sealing performance of single cells
[0003] At present, the cover plate structure of the power battery is generally processed by the process of injection molding of the cover plate base, copper-aluminum poles, and upper and lower plastics. The mass of the cover plate structure is relatively large; Sealing rings are used for extrusion sealing (such as PFA, fluororubber sealing rings, polyethylene, etc.), and such sealing rings may fail under high temperature or high stress during long-term use of the battery, causing power failure. Battery sealing poses safety hazard
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[0024] The present invention will be further elaborated below in conjunction with specific examples. Among them, the accompanying drawings are only schematic diagrams, which serve as a schematic illustration of the invention, and are not actual drawings of the invention, and cannot be understood as limitations on this patent; and in the embodiments of the present invention, some real objects are actually necessary components, and for this invention It is well known to those skilled in the art, but it will be omitted because it has little impact on the invention, and the size of some products may be enlarged or reduced due to needs, and does not represent the size of the actual product.
[0025] Such as figure 1 Shown is a schematic structural diagram of a power battery in some embodiments of the present invention, which includes a battery case 1 , a battery core 2 disposed in the battery case 1 , and a power battery cover 3 disposed on the battery case 1 .
[0026] Such as ...
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The invention relates to a cover plate for a power battery. The cover plate comprises a cover plate matrix provided with mounting holes, and connection pieces arranged in the mounting holes, wherein the connection pieces and the cover plate matrix are made of metal materials; the connection pieces and the cover plate matrix are in insulation and hermetic connection through injection molding of resin; and the connection pieces include a positive connection piece and a negative connection piece. According to the cover plate for the power battery in the invention, the connection pieces and the cover plate matrix are sealed through injection molding of resin, so good sealing performance and high safety performance are obtained, and the service life of the battery is prolonged; in addition, theconnection pieces serve as battery poles, so the overall weight of the cover plate is significantly reduced.
Description
technical field [0001] The invention relates to the field of power batteries, more specifically, to a power battery cover, a power battery using the cover and a method for producing the power battery cover. Background technique [0002] With the rapid development of new energy sources, lithium-ion batteries are widely used in electric tools, new energy vehicles, grid energy storage and other related fields. The requirements for higher safety performance are becoming more and more intense. However, the performance of power batteries in practical applications often has deficiencies in this aspect, mainly in three aspects: the energy density of a single cell is small, and the design of the battery system is complex. , Potential safety hazards caused by the sealing performance of single cells. [0003] At present, the cover plate structure of the power battery is generally processed by the process of injection molding of the cover plate base, copper-aluminum poles, and upper an...
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IPC IPC(8): H01M2/04H01M2/02H01M2/08H01M2/26H01M50/10H01M50/148H01M50/193H01M50/543
CPCH01M50/10H01M50/147H01M50/183H01M50/531Y02E60/10
Inventor 赖玉军
Owner HUIZHOU TOPBAND ELECTRICAL TECH CO LTD