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A high voltage power battery

A power battery, high-voltage technology, applied in non-aqueous electrolyte batteries, electrolyte battery manufacturing, secondary batteries, etc., can solve the problems of limited conductivity of cylindrical batteries, poor heat resistance of square batteries, violent vibration and even collisions, etc. Achieve the effects of avoiding electrolyte leakage or contact with air, reducing battery internal resistance, and improving impact resistance

Active Publication Date: 2016-09-14
BEIJING HAWAGA POWER STORAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They have their own limitations: cylindrical batteries have limited conductivity and are not suitable for large-capacity batteries; square batteries have poor heat resistance and have right-angled angles, which easily lead to uneven internal pressure; soft-pack batteries have limited drainage and poor force bearing capacity , vulnerable to damage
For the power battery used in electric vehicles, the working environment is harsh, and it is often subject to severe vibration or even collision. The above three structures are not suitable for making high-voltage power lithium-ion batteries connected in series internally.

Method used

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Examples

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Embodiment 1

[0046] This embodiment provides a high-voltage power lithium-ion battery.

[0047] The medium and high voltage power lithium-ion battery 801 of the present invention is designed to meet the power supply requirements of various electric vehicles. Therefore, according to the different application occasions of the battery, the voltage design value of the battery cell 301 is also different. The number of stacks varies. At present, the working voltages of small electric vehicles (including electric bicycles, electric motorcycles and electric sightseeing cars, etc.) are generally: 36V, 48V, 64V, 74V and 80V. Large and medium-sized electric vehicles (including pure electric crew cars, pure electric trucks, etc.) , hybrid vehicles, electric buses, etc.) operating voltage range is generally 120V ~ 500V.

[0048] This embodiment is a pure electric passenger car power supply, its working voltage is 360V, the working voltage platform of the selected battery cell 301 is 360V, and the numb...

Embodiment 2

[0059] This embodiment provides an elastic gasket 401 device for a high-voltage power battery.

[0060] In this embodiment, the elastic gasket 401 includes a circular gasket 402 and an elastic body 403a, wherein the elastic body is an elastic porous metal nickel foam, such as Figure 4 As shown in a, or it is a metal sheet with compressive resilience such as wave board wave, cup board, etc., such as Figure 4 b and Figure 4 c shown. The rest of the structure of the battery is the same as that of the first embodiment.

Embodiment 3

[0062] This embodiment provides a flexible current collector 601 device for a high-voltage power battery.

[0063] In this embodiment, various arrangements of the flexible current collecting wires 601 on the battery case are listed, such as Figure 7 a. Figure 7 b. Figure 7 c and Figure 7 d, respectively (a) single-spiral flexible collector line; (b) multi-spiral flexible collector line; (c) strip-shaped flexible collector line; (d) polygonal mesh flexible collector line; The material is copper and aluminum alloy with silver plated surface. The rest of the structure of the battery is the same as that of the first embodiment.

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Abstract

The invention provides a high-voltage power battery, comprising: a battery core, an elastic gasket, a battery recess, a battery cover, an insulating case and a flexible current collecting line. The battery cell is composed of two or more battery cells superimposed. The annular sealing ring on the side of the battery cell and the elastic gasket on the upper and lower surfaces of the battery cell are elastically pressed against each other by the pressing force generated by the folding area of ​​the battery case, ensuring The insulation sealing of the battery cell and the tight connection between the battery cells inside the battery cell reduce the internal resistance of the battery, and at the same time make the power battery have a strong impact resistance during use, preventing the inside of the battery cell from being damaged by severe extrusion. destroy. The shape of the high-voltage power battery is in the shape of a round cake, the diameter of the battery is 8-150 cm, the height of the battery is 0.5-16 cm, and the ratio of the diameter of the battery to the height of the battery is greater than 1, preferably 5-20. This structure can realize the high voltage and high rate output characteristics of the power battery, and the overall structure of the battery is simple, with good safety and high reliability.

Description

technical field [0001] The invention relates to a power battery and its application field, in particular to a high-voltage power lithium-ion battery that can provide energy for pure electric vehicles, hybrid vehicles, electric motorcycles and the like. Background technique [0002] The development of electric vehicles is an effective means to alleviate the energy crisis and environmental degradation, and the key technology for the development of electric vehicles is the power battery. Because lithium-ion batteries have the advantages of large specific energy, high operating voltage, long cycle life, low self-discharge rate, and no memory effect, it is very likely to be widely used in the power supply of electric vehicles in the future. [0003] The single power lithium-ion battery currently developed and applied, whether it is a square or a cylindrical shape, is generally composed of a battery unit inside the battery, and the working voltage range of the single battery is ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M2/02H01M2/08H01M2/10H01M10/058H01M50/107H01M50/14H01M50/184H01M50/186
CPCY02E60/10Y02P70/50
Inventor 陈永翀张晓虎张艳萍张萍王秋平
Owner BEIJING HAWAGA POWER STORAGE TECH
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