Electrodes, non-aqueous electrolyte batteries, battery packs and vehicles

A non-aqueous electrolyte and battery pack technology, which is applied in the direction of non-aqueous electrolyte battery electrodes, battery/battery traction, electrolyte, etc., can solve the problem of low battery voltage and achieve the effect of excellent input and output characteristics

Active Publication Date: 2020-05-19
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spinel lithium titanate has a high lithium intercalation and deintercalation potential of 1.55V (vs. Li / Li + ), so the battery voltage of the non-aqueous electrolyte battery using spinel-type lithium titanate in the negative electrode is low

Method used

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  • Electrodes, non-aqueous electrolyte batteries, battery packs and vehicles
  • Electrodes, non-aqueous electrolyte batteries, battery packs and vehicles
  • Electrodes, non-aqueous electrolyte batteries, battery packs and vehicles

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0035] According to the first embodiment, an electrode is provided. The electrode contains the first composite oxide of the orthorhombic Na-niobium-titanium composite oxide and the general formula Li 2+a Na 2+b Ti 6 o 14 The second composite oxide represented by (-0.2≤a≤2, -0.2≤b≤0.2).

[0036] The orthorhombic Na-Nb-Ti composite oxide can display 1.2-1.4V (vs.Li / Li + ) Li intercalation and deintercalation potentials in the range. Therefore, when the electrode according to the first embodiment of the first embodiment containing the orthorhombic Na-Na-containing niobium-titanium composite oxide is combined with a positive electrode, it is possible to realize an electrode that can show a higher level than an electrode using spinel-type lithium titanate. Higher battery voltage non-aqueous electrolyte battery.

[0037] In addition, the orthorhombic Na-containing niobium-titanium composite oxide can show a charge-discharge curve with a large potential change accompanying a ch...

no. 2 Embodiment approach

[0141] According to the second embodiment, there is provided a nonaqueous electrolyte battery. This nonaqueous electrolyte battery includes the electrode according to the first embodiment as a negative electrode, a positive electrode, and a nonaqueous electrolyte.

[0142] The nonaqueous electrolyte battery according to the second embodiment may further include a separator disposed between the positive electrode and the negative electrode. The positive electrode, the negative electrode and the separator can constitute an electrode group. A non-aqueous electrolyte may be held in the electrode group.

[0143] In addition, the non-aqueous electrolyte battery according to the second embodiment may further include an exterior member for accommodating the electrode group and the non-aqueous electrolyte.

[0144] In addition, the non-aqueous electrolyte battery according to the second embodiment may further include a positive terminal electrically connected to the positive electrod...

no. 3 Embodiment approach

[0197] According to a third embodiment, a battery pack is provided. This battery pack includes the nonaqueous electrolyte battery according to the second embodiment.

[0198] The battery pack according to the third embodiment may include one or more non-aqueous electrolyte batteries (single cells) according to the second embodiment. A plurality of nonaqueous electrolyte batteries can be electrically connected in series, parallel, or a combination of series and parallel to form a battery pack. The battery pack according to the third embodiment may include a plurality of assembled batteries.

[0199] The battery pack according to the third embodiment may further include a protection circuit. The protection circuit has a function of controlling charge and discharge of the nonaqueous electrolyte battery. Alternatively, a circuit included in a device that uses a battery pack as a power source (for example, an electronic device, an automobile, etc.) may be used as a protection ci...

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Abstract

The present invention provides an electrode of a non-aqueous electrolyte battery capable of exhibiting excellent input-output characteristics in a highly charged state. According to one embodiment, an electrode is provided. The electrode contains the first composite oxide of orthorhombic crystal-type Na-niobium-titanium composite oxide and the general formula Li 2+a Na 2+b Ti 6 o 14 The second composite oxide represented by (-0.2≤a≤2, -0.2≤b≤0.2).

Description

technical field [0001] Embodiments of the present invention relate to an electrode, a nonaqueous electrolyte battery, a battery pack, and a vehicle. Background technique [0002] Non-aqueous electrolyte batteries, in which lithium ions are charged and discharged by moving between the negative electrode and the positive electrode, have been extensively researched as high-energy-density batteries. [0003] This non-aqueous electrolyte battery is expected to be used as a large and medium-sized power source such as in-vehicle use and stationary use, in addition to its use as a power source for small electronic devices. In such large and medium-sized applications, non-aqueous electrolyte batteries are required to have life characteristics and high safety. In addition, high input-output characteristics of the non-aqueous electrolyte battery are also required. [0004] As an example of a non-aqueous electrolyte battery having life characteristics and high safety, a non-aqueous el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/13H01M4/485H01M10/0525B60L50/64
CPCH01M4/13H01M4/485H01M10/0525H01M2220/20H01M50/296H01M50/211B60L50/64H01M50/249H01M4/131H01M2004/021H01M2004/027H01M4/364H01M10/0569H01M2300/0037Y02E60/10Y02T10/70
Inventor 保科圭吾原田康宏高见则雄
Owner KK TOSHIBA
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