CN209217114U - Superbattery - Google Patents

Abstract

This application provides a kind of superbattery, the superbattery includes: positive plate, negative plate and diaphragm, and the diaphragm is arranged between positive plate and negative plate；The positive plate is honeycomb or the negative plate is honeycomb；Or the positive plate and negative plate are honeycomb.Technical solution provided by the present application has the advantages that increase battery capacity and safety.

Description

Superbattery

Technical field

This application involves new energy fields, and in particular to a kind of superbattery.

Background technique

Currently, capacity and the safety of new energy battery, are all an important factor for restricting the development of new energy battery, especially Safety.The capacity of existing new energy battery is low, is unable to satisfy the requirement of user.

Utility model content

The embodiment of the present application provides a kind of superbattery, and the capacity of battery is improved by cell panel structure, meets user Requirement.

In a first aspect, the embodiment of the present application provides a kind of superbattery, the superbattery includes: positive plate, negative plate And diaphragm, the diaphragm are arranged between positive plate and negative plate；

The positive plate be honeycomb,

Or the negative plate is honeycomb；

Or the positive plate and negative plate are honeycomb.

Optionally, the positive plate specifically includes for honeycomb:

The positive plate is made of multiple honeycombs, and each honeycomb is the positive plate material of a unit mass.

Optionally, the negative plate specifically includes for honeycomb:

The negative plate is made of multiple honeycombs, and each honeycomb is the cathode plate material of a unit mass.

Optionally, the multiple honeycomb is disorderly arranged or ordered arrangement.

Implement the embodiment of the present application, has the following beneficial effects:

As can be seen that positive plate or negative plate are arranged to honeycomb by superbattery provided by the present application, increase as far as possible The contact area of big positive/negative plate and electrolyte, by largely injecting electrolyte, keeps electronics more square to accommodate more electronics Just it shuttles between positive and negative anodes, by diaphragm, positive and negative anodes is separated.This structure can greatly improve the capacity of battery, meet The requirement of user.

Detailed description of the invention

In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present application, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.

Fig. 1 is a kind of structural schematic diagram of superbattery provided by the embodiments of the present application.

Fig. 2 is positive plate honeycomb structure schematic diagram provided by the embodiments of the present application.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.Based on this Shen Please in embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall in the protection scope of this application.

The description and claims of this application and term " first ", " second ", " third " and " in the attached drawing Four " etc. are not use to describe a particular order for distinguishing different objects.In addition, term " includes " and " having " and it Any deformation, it is intended that cover and non-exclusive include.Such as it contains the process, method of a series of steps or units, be System, product or equipment are not limited to listed step or unit, but optionally further comprising the step of not listing or list Member, or optionally further comprising other step or units intrinsic for these process, methods, product or equipment.

Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and Implicitly understand, embodiment described herein can be combined with other embodiments.

Refering to fig. 1, Fig. 1 provides a kind of superbattery, which includes: positive plate 10, negative plate 11 and diaphragm 12, wherein the diaphragm 12 is arranged between positive plate 10 and negative plate 11, and the positive plate is as shown in Fig. 2, the positive plate is bee Nest structure.

Optionally, above-mentioned negative plate may be honeycomb.

Above-mentioned positive plate can specifically include for honeycomb:

The positive plate is made of multiple honeycombs 20, and each honeycomb is the positive plate material of a unit mass.

Above-mentioned negative plate can specifically include for honeycomb:

The negative plate is made of multiple honeycombs, and each honeycomb is the cathode plate material of a unit mass.

Optionally, above-mentioned multiple honeycombs can be disorderly arranged, and certain multiple honeycombs can also be with ordered arrangement.

Be by anode, cathode, pole plate honeycomb as a result, make its accommodate as much as possible the positive electrode of unit mass and Negative electrode material.Cellular structure is conducive to the contact area for increasing anode, negative electrode active material.In inside battery, by a large amount of Fluid injection, so that ferry-boat of the electronics between positive and negative anodes is more easy.In short, it is connect by increasing positive and negative anodes active material, increasing Contacting surface product, reduction internal resistance are released so that the electricity of battery preferably be made further to discharge to reach the existing ternary energy content of battery 2 times put, theoretically even up to 3.2 times.

Electrode reaction is as follows:

Anode:

Cathode:

Overall reaction:

In battery charging process, Li⁺Deviate from from anode, discharges an electronics, Co₃ ⁺It is oxidized to Co₄ ⁺；Li⁺By electrolysis Matter is embedded in charcoal cathode, while the compensation charge of electronics is transferred to cathode from external circuit, maintains charge balance；When battery discharge, electricity Son reaches anode by external circuit from cathode, and in inside battery, Li+ is migrated to anode, is embedded into anode, and obtained by external circuit To an electronics, Co₄ ⁺It is reduced to Co₃ ⁺。

Superbattery electromotive force

Charge and discharge process is indeed through chemical reaction realization, the variation of Gibbs free energy and the electricity of battery system There are following relationships between gesture:

Δ G Θ=- nFE (under standard state)

In formula, n is the amount that the substance of electronics is shifted in electrode reaction；F is Faraday constant, F=96500C/mol (or Person F=26.8Ah/mol)；E Θ is standard electrode potential, and when discharge voltage goes to zero, output voltage is equal to cell voltage potential E Θ

Capacity and specific capacity

Theoretical capacity (C0)

Theoretical capacity assumes that active material all participates in electricity given by cell reaction.

In formula, m is quality when active material reacts completely；M is the molal weight of active material；When ne is electrode reaction Receiving and losing electrons number；K is the chemical equivalent of active material.For LiCoO₂、LiMn₂、 LiFePO₄, theoretical capacity is all 26.8A·h·mol-1。

Actual capacity (C)

Actual capacity refers under certain discharging condition (such as 0.2C), the practical electricity released of battery.Battery is in difference Discharge system under given electricity it is different, this battery actual capacity that do not indicate under discharge system usually with mark capacity come It indicates.Mark capacity is a kind of approximate representation method of actual capacity.Rate of discharge, temperature and the final voltage of battery claim For the discharge system of battery.Discharge system is different, and capacitor is different.

Calculation method is as follows:

When constant current discharge: C=It

When constant resistance discharge:

Approximate formula are as follows:

Energy and specific energy

The energy of battery refers to that battery under certain discharging condition externally usually use by the exported electric energy of acting, unit Watt-hour (Wh) indicates.

Theoretical energy

Assuming that battery is in equilibrium state always during the charging process, discharge voltage keeps the number of electromotive force (E Θ) It is worth, and the utilization rate that activity is misunderstood is 100%, both discharge capacity is theoretical capacity, then battery with this condition exports Energy is theoretical energy W0；Both:

W₀=C₀E^Θ

The namely maximum work that is done under constant temperature and pressure of cell:

W₀=-Δ G^Θ=nFE^Θ

Theoretical specific energy

Theoretical specific energy refers to energy given by the battery of unit mass or unit volume, also referred to as energy density, Common WhKg-1 or WhL-1 is indicated.Specific energy also sub-argument opinion specific energy and practical specific energy.

The Theoretical Mass specific energy of battery can be according to the Theoretical Mass specific capacity and battery of two kinds of active materials of positive and negative electrode Electromotive force calculate.If the electrochemical equivalent of positive and negative anodes active material is respectively K+, K- (gA-1h-1), the electricity of battery Gesture is E Θ, then the Theoretical Mass specific energy (WhKg-1) of battery are as follows:

W′₀=E^Θ/(K₊+K_-)

The energy of reality output when actual energy is battery discharge.It is numerically equal to battery actual capacity and battery is flat The voltage product to work:

W=CV_{It is flat}

Since active material can not be utilized completely, and the operating voltage of battery is less than electromotive force forever, so electric The actual energy in pond is always less than theoretical energy.

Power and specific power

The power of battery refers to that under certain discharge system, the energy that battery exports in the unit time, unit is watt (W) Or kilowatt (KW).And unit mass perhaps unit volume battery output power be specific power unit be WKg-1 or W·L-1。

Theoretically the power of battery can indicate are as follows:

In formula, t is discharge time；C0 is the theoretical capacity of battery；I is constant electric current；E Θ is electromotive force.

The actual power of battery:

P=IV=I (E^Θ-IR_{It is interior})=IE^Θ-I²R_{It is interior}

In formula, I²The power of the full internal resistance of battery is consumed in R, this Partial Power is useless to load.

Superbattery is by improving electrode, and electrode material is industry silver plus active matter, and pole plate is with respect to ternary cylindrical battery It is more coarse, so that the actual power of battery is substantially equal to theoretical power (horse-power), it may be assumed that

P₀=P.

The embodiment of the present application is described in detail above, specific case used herein to the principle of the application and Embodiment is expounded, the description of the example is only used to help understand the method for the present application and its core ideas； At the same time, for those skilled in the art can in specific embodiments and applications according to the thought of the application There is change place, in conclusion the contents of this specification should not be construed as limiting the present application.

Claims (4)

1. a kind of superbattery, the superbattery includes: positive plate, negative plate and diaphragm, and the diaphragm is arranged in positive plate And between negative plate；It is characterized in that,

The positive plate be honeycomb,

Or the negative plate is honeycomb；

Or the positive plate and negative plate are honeycomb.

2. superbattery according to claim 1, which is characterized in that the positive plate specifically includes for honeycomb:

The positive plate is made of multiple honeycombs, and each honeycomb is the positive plate material of a unit mass.

3. superbattery according to claim 1, which is characterized in that the negative plate specifically includes for honeycomb:

The negative plate is made of multiple honeycombs, and each honeycomb is the cathode plate material of a unit mass.

4. superbattery according to claim 2 or 3, which is characterized in that

The multiple honeycomb is disorderly arranged or ordered arrangement.