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Power battery top cover structure and power battery

A power battery and top cover technology, which is applied to small-sized batteries/battery packs, battery covers/end covers, batteries, etc., can solve the problem of detachment of lower insulating parts, prevent small longitudinal displacement, and achieve tight snap fit. Effect

Pending Publication Date: 2018-10-02
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the lower insulating part is fixed under the top cover by snap fit in a natural state, this snap fit fixation method is limited by its own snap-fit ​​structure, and the snap-fit ​​part and the snap-fit ​​part will be on the top after assembly. There is a certain assembly gap in the thickness direction of the cover sheet, which cannot avoid the displacement of the lower insulating part in a small range, especially the longitudinal displacement, which may cause the lower insulating part of the power battery to detach when it vibrates, making the battery cell and the top cover Chip direct contact causes a short circuit

Method used

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  • Power battery top cover structure and power battery
  • Power battery top cover structure and power battery
  • Power battery top cover structure and power battery

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Embodiment Construction

[0074] The present application will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings. The "front", "rear", "left", "right", "upper" and "lower" mentioned in the text are all referred to the power battery top cover structure in the attached drawings.

[0075] like figure 1 As shown, firstly, the embodiment of the present application defines mutually perpendicular X-axis, Y-axis and Z-axis in the three-dimensional Cartesian coordinate system. The cover structure, the top cover structure of the power battery includes a first electrode assembly and a second electrode assembly, wherein the first electrode assembly includes the first pole 10, the first pole sealing ring 11 and the first adapter piece 12 and other components, the second The two-electrode assembly includes components such as the second pole 20, the second pole sealing ring 21, and the second adapter piece 22. At the same time, the top cover structure ...

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Abstract

The application relates to the field of energy storage devices, in particular to a power battery top cover structure and a power battery. The power battery top cover structure comprises a first electrode assembly, a second electrode assembly, a lower insulating part, a top cover plate and propping parts, wherein the first electrode assembly and the second electrode assembly are fixed on the top cover plate; the lower insulating part can be fixed below the top cover plate in a snap-fit manner, and comprises fastening parts and a connecting part along an X axis; when the lower insulating part isin the natural state and is fixed below the top cover plate in the snap-fit manner, the minimum spacing between the connecting part and the top cover plate on a Z axis is G1, the propping parts extend along a Y axis, and are propped between the connecting part and the top cover plate; and in the state, the minimum spacing between the connecting part and the top cover plate on the Z axis is G3, G3is greater than G1. The power battery top cover structure provided by the invention can effectively prevent the lower insulating part from generating low-amplitude longitudinal displacement.

Description

technical field [0001] The present application relates to the field of energy storage devices, in particular to a power battery top cover structure and a power battery. Background technique [0002] At present, due to the advantages of high energy density, high power density, many cycle times, and long storage time, lithium-ion batteries are widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, and are used in electric vehicles, Electric vehicles such as electric bicycles and large and medium-sized electric equipment such as energy storage facilities have broad application prospects, and become the key to solving global problems such as energy crisis and environmental pollution. [0003] With the improvement of electric vehicle technology, electric vehicles and hybrid vehicles are getting closer to people's daily life, and there are huge business opportunities. higher requirement. The effective space inside the cell should...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M10/0525H01M10/058H01M50/147H01M50/184H01M50/188H01M50/367H01M50/50H01M50/55H01M50/553H01M50/593
CPCH01M10/0525H01M10/058H01M2220/20H01M50/147H01M50/553H01M50/55H01M50/367H01M50/593H01M50/188H01M50/50H01M50/184H01M2200/20Y02E60/10H01M50/15H01M50/3425H01M50/578Y02P70/50H01M2220/10
Inventor 邢承友郑于炼王鹏郭剑郭志君
Owner CONTEMPORARY AMPEREX TECH CO
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