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High-voltage power battery

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

Active Publication Date: 2015-04-29
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 high-voltage power lithium-ion battery 801 in 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, that is, the battery unit 201 that composes the battery cell 301 The amount of stacking 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, and large and medium-sized electric vehicles (including pure electric passenger vehicles, pure electric trucks, etc.) , hybrid electric vehicles, electric buses, etc.) the working voltage range is generally 120V ~ 500V.

[0048] This embodiment is a pure electric passenger car power supply, its operating voltage is 360V, th...

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 foam nickel, such as Figure 4 As shown in a, or metal sheets with compression resilience such as corrugated boards, cup-shaped boards, etc., such as Figure 4 b and Figure 4 as shown in c. The rest of the structure of the battery is the same as in Embodiment 1.

Embodiment 3

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

[0063] In this embodiment, there are many ways to arrange the flexible current collecting lines 601 on the battery case, such as Figure 7 a. Figure 7 b. Figure 7 c and Figure 7 As shown in d, they are (a) single helical flexible current collectors; (b) multi-helical flexible current collectors; (c) strip flexible current collectors; (d) polygonal mesh flexible current collectors; The material is silver-plated copper and aluminum alloy. The rest of the structure of the battery is the same as in Embodiment 1.

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Abstract

The invention provides a high-voltage power battery. The high-voltage power battery comprises a cell, elastic spacers, a battery concave seat, a battery cover, an insulation shell and a flexible current collector wire. The cell is formed by superimposing two or more than two battery units, an annular seal ring on the side edge of the cell and the elastic spacers on the upper surface and lower surface of the cell are elastically extruded mutually under the effect of an extrusion force produced by a flanging area of a battery shell, so that the insulation sealing performance of the cell and the tight connection among battery units inside the cell can be guaranteed, the inner resistance of the battery is reduced, the power battery is ensured to have relatively high impact resistance in the application process, and the interior of the cell can be prevented from being damaged due to the severe extrusion. The appearance of the high-voltage power battery is in a cake shape, the diameter of the battery is 8cm to 150cm, the height of the battery is 0.5cm to 16cm, and the ratio of the battery diameter to the batter height is more than 1 and preferably 5 to 20. By adopting the structure, the high voltage and high magnification output characteristic of the power battery can be realized, and the battery is integrally simple in structure, good in safety and high in 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 power batteries. Because lithium-ion batteries have the advantages of large specific energy, high working voltage, long cycle life, low self-discharge rate, and no memory effect, they are likely to be widely used in the power supply of electric vehicles in the future. [0003] The single power lithium-ion battery developed and applied at present, whether it is square or cylindrical, generally consists of one battery unit inside the battery, and the working voltage range of the single battery is roughly between 2....

Claims

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Application Information

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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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