CN214099708U - Radiating electric core of mass flow body extension - Google Patents

Radiating electric core of mass flow body extension Download PDF

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Publication number
CN214099708U
CN214099708U CN202120269448.9U CN202120269448U CN214099708U CN 214099708 U CN214099708 U CN 214099708U CN 202120269448 U CN202120269448 U CN 202120269448U CN 214099708 U CN214099708 U CN 214099708U
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current collector
positive
negative
extension
battery cell
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林中尉
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Suzhou Amtf Robots Co ltd
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Suzhou Amtf Robots Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

This patent provides a radiating electric core of mass flow body extension, and it can dispel the heat fast, and simple structure, easy production, and production efficiency is high, with low costs. The battery core comprises at least one current collector and a composite material, and the current collector comprises a current collector extension part extending to the side part to exceed the battery core main body.

Description

Radiating electric core of mass flow body extension
Technical Field
This patent relates to electric core, is an electricity storage device.
Background
In the use of the electricity storage device formed by the flaky current collector, the composite material and the like, for example, the heat dissipation is a crucial factor influencing the service life and the reliability of the battery cell, and the heat conductivity of the non-metallic material is poor, so that the heat dissipation is generally adopted from the direction perpendicular to the current collector, and the heat resistance is large, so that the heat exchange time of the battery cell is long, and the effect is poor. Therefore, a battery cell and an assembly structure thereof are needed, which can perform heat exchange rapidly and are easy to produce.
Disclosure of Invention
The purpose of this patent is to provide a radiating electric core of mass flow body extension, it can dispel the heat fast, and simple structure, easy production, and production efficiency is high, with low costs.
This patent the radiating electric core of mass flow body extension, electric core has a mass flow body and combined material at least, and the mass flow body has the mass flow body extension that extends to the lateral part and surpasss electric core main part.
The current collector in a typical cell includes a positive current collector and a negative current collector that are opposite to each other, and the current collector extension in this case may be a positive current collector extension or a negative current collector extension. The positive current collector extension is formed by extending the positive current collector to the side part beyond the cell main body (such as opposite positive and negative current collectors), and the negative current collector extension is formed by extending the negative current collector to the side part beyond the cell main body (such as opposite positive and negative current collectors).
However, some cells are cells with only one type of current collector, such as a solid-state battery cell, only a positive current collector, and the electrolyte is a negative electrode, in which case, the current collector extension is a positive current collector extension formed by extending the positive current collector beyond the cell body.
In the battery core with the heat radiation function, the plurality of positive current collectors are attached to the plurality of positive current collector extension portions formed by extending the plurality of positive current collectors to the same side, or the plurality of negative current collectors are attached to the plurality of negative current collector extension portions formed by extending the plurality of negative current collectors to the same side. Preferably, the battery core with the heat-dissipating current collector extension part further comprises a heat-conducting fin, and the heat-conducting fin is located between the two positive current collector extension parts and is in contact with the positive current collector extension parts, or is located between the two negative current collector extension parts and is in contact with the negative current collector extension parts.
In the battery core with the heat radiation function, the plurality of positive current collectors extend towards the same side to form the plurality of positive current collector extension parts, at least one positive current collector extension part is bent and then attached to other positive current collector extension parts, or all positive current collector extension parts are bent and then attached to each other.
In the battery core with the heat radiation function, the plurality of negative current collectors extend towards the same side to form the plurality of negative current collector extension parts, at least one negative current collector extension part is bent and then attached to other negative current collector extension parts, or each negative current collector extension part is bent and then attached to the other negative current collector extension parts.
The battery core with the heat radiation function by the current collector extension part further comprises a heat conducting fin contacted with the current collector extension part.
The battery core with the heat radiation function by the current collector extension part further comprises a positive lead-out tab or a negative lead-out tab, the positive lead-out tab is connected with the positive current collector or the positive current collector extension part, and the negative lead-out tab is connected with the negative current collector or the negative current collector extension part.
The battery cell with the heat radiation function of the current collector extension part further comprises a battery cell outer bag body, and the battery cell outer bag body is coated outside the current collector and the current collector extension part. If the battery core is a battery core only provided with one current collector, such as a solid-state battery core, the battery core outer inclusion body is coated outside the current collector, the electrolyte and the current collector extension part. If the battery core is provided with two current collectors, namely a positive current collector and a negative current collector, the battery core outer wrapping body wraps the positive current collector, the negative current collector, the positive current collector extension part, the negative current collector extension part and the composite material. Preferably, the battery cell with the heat dissipated by the current collector extension part further comprises a positive lead-out tab or a negative lead-out tab, the positive lead-out tab is connected with the positive current collector or the positive current collector extension part and extends out of the battery cell enclosure body, and the negative lead-out tab is connected with the negative current collector or the negative current collector extension part and extends out of the battery cell enclosure body.
The beneficial effect of this patent: in this patent, the mass flow extension that thermal conductivity is good is used for electric core and external heat exchange, that is to say, electric core is from the direction heat dissipation that is on a parallel with the mass flow body, and the thermal resistance is less, so the heat exchange time of electric core is short, and is effectual. Meanwhile, the current collector extension part and the current collector are integrated, and only the original current collector is laterally extended, so that the size is increased, and the production is simple and convenient.
The heat conducting fins in contact with the extension parts of the positive current collector or the negative current collector are arranged, so that the heat dissipation efficiency can be further improved, and the heat of the battery core can be rapidly dissipated.
The plurality of positive electrode current collector extension portions or the plurality of negative electrode current collector extension portions may be directly attached together, or may be partially or completely bent and then attached together.
And a positive lead-out tab or a negative lead-out tab is arranged, so that the electric core is conveniently and electrically connected with the outside.
The cell outer inclusion body wraps the positive current collector, the negative current collector, the composite material between the positive current collector and the negative current collector, the current collector extension part and the like together. Of course, if a positive lead-out tab or a negative lead-out tab exists, the positive lead-out tab or the negative lead-out tab needs to extend out of the cell outer bag body.
The heat conduction ability of the mass flow body that this patent innovation technique application metal material made is far more than the non-metal or combined material's that constitute electric core characteristic, sets up local only metal on electric core and folds each other and fold the mass flow body extension isotructure of pressing or using a small amount of non-metal intervals after, is used as electric core and outside heat exchange, can improve the heat exchange capacity of electric core like this greatly for the temperature control of electric core is faster, improves the performance and the life of electric core. Of course, the current collector may be any other material with high electrical and thermal conductivity, such as graphene.
Drawings
FIG. 1 is a front view of embodiment 1;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of embodiment 2;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a front view of embodiment 3;
fig. 6 is a top view of fig. 5.
The battery comprises a positive current collector 1, a negative current collector 2, a positive lead-out tab 3, a negative lead-out tab 4, a composite material 5, a battery core outer enclosure 6, a heat conducting sheet 7, a positive current collector extension 11 and a negative current collector extension 22.
Detailed Description
Example 1
Referring to the battery cell with the heat dissipated by the current collector extension portion shown in fig. 1 and 2, the battery cell has a plurality of positive current collectors 1 and negative current collectors 2 arranged at intervals in thickness, positive lead-out tabs 3, negative lead-out tabs 4, composite materials 5 located between the positive current collectors and the negative current collectors, and a battery cell enclosure 6.
Each positive current collector extends to the left beyond the positive and negative current collector opposite surfaces to form a plurality of positive current collector extension portions 11 which are attached together, and each negative current collector extends to the right beyond the negative current collector opposite surfaces to form a plurality of negative current collector extension portions 22 which are attached together.
The cell outer bag body 6 covers the positive current collector 1, the positive current collector extension part 11, the negative current collector 2, the negative current collector extension part 22 and the composite material 5.
The positive lead-out tabs 3 are communicated with the front sides of the positive current collectors and extend out of the cell outer enclosure 6, and the negative lead-out tabs 4 are communicated with the rear sides of the negative current collectors and extend out of the cell outer enclosure 6.
Example 2
Referring to the battery cell with the heat dissipated by the current collector extension portion shown in fig. 3 and 4, the battery cell has a plurality of positive current collectors 1 and negative current collectors 2 arranged at intervals in thickness, a positive lead-out tab 3, a negative lead-out tab 4, a composite material 5 located between the positive current collectors and the negative current collectors, a battery cell outer enclosure 6, and a heat conducting fin 7.
The positive current collectors extend to the left and the rear to exceed the positive and negative current collector opposite surfaces to form a plurality of positive current collector extension portions 11, and the negative current collectors extend to the right and the front to exceed the negative current collector opposite surfaces to form a plurality of negative current collector extension portions 22, which are bonded together.
The heat conducting sheet 7 is located between and in contact with two adjacent positive current collector extensions. The battery core outer bag body 6 covers the positive current collector 1, the positive current collector extension part 11, the negative current collector 2, the negative current collector extension part 22, the composite material 5 and the heat conducting sheet 7.
The positive leading-out tab 3 is connected with the positive current collector extension part 11 or the heat conducting fin 7 in a conduction mode and extends forwards out of the cell outer enclosure body 6, and the negative leading-out tab 4 is connected with the negative current collector extension part 22 in a conduction mode and extends forwards out of the cell outer enclosure body 6.
Example 3:
referring to the battery cell with the heat dissipated by the current collector extension portion shown in fig. 5 and 6, the battery cell has a plurality of positive current collectors 1 and negative current collectors 2 arranged at intervals in thickness, positive lead-out tabs 3, negative lead-out tabs 4, composite materials 5 located between the positive current collectors and the negative current collectors, and a battery cell enclosure 6.
The upper and lower positive current collectors extend to the left side and the front side beyond the positive and negative current collector opposite surfaces to form a plurality of positive current collector extension parts 11, and then are bent to be attached to the positive current collector extension parts 11 formed by the positive and negative current collector opposite surfaces extending to the left side and the front side of the positive and negative current collectors in the middle, and the negative current collectors extend to the right side and the rear side beyond the positive and negative current collector opposite surfaces to form a plurality of negative current collector extension parts 22.
The cell outer bag body 6 covers the positive current collector 1, the positive current collector extension part 11, the negative current collector 2, the negative current collector extension part 22 and the composite material 5.
The positive lead-out tab 3 is connected with the positive current collector extension 11 in a conduction mode and extends forwards out of the cell outer enclosure 6, and the negative lead-out tab 4 is connected with the negative current collector extension 22 in a conduction mode and extends backwards out of the cell outer enclosure 6.
In this patent, constitute partly outside extension of the mass flow body of the positive negative pole of electric core, surpass the opposite face boundary formation mass flow body extension between two mass flow bodies, the direct or folding back laminating of mass flow body extension of multilayer same polarity is in the same place, or sets up the conducting strip that the good material of heat conductivity was made between the mass flow body extension then each other laminating together for electric core and external heat exchange.
The current collector or the extension part of the current collector can be provided with a leading-out lug, and the connection structure and the connection mode of the leading-out lug and the current collector or the extension part of the current collector do not influence the protection scope of the patent claims.
The current collector refers to a substrate for coating a battery core composite material, such as copper, aluminum, graphene, etc., which constitutes a battery core, and the specific material, composition, etc. of the current collector do not affect the protection scope of the claims of the present patent.
The composite material belongs to the prior art, and the material, the structural form and the like of the composite material do not influence the protection scope of the patent claims.
The arrangement sequence of the current collector and the composite material does not affect the protection scope of the patent claims.

Claims (9)

1. The utility model provides a thermal-arrest electric core of mass flow body extension, electric core has a mass flow body and combined material at least, characterized by: the current collector has a current collector extension extending laterally beyond the cell body.
2. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: the plurality of positive current collectors are attached to the plurality of positive current collector extension portions formed by extending the plurality of positive current collectors to the same side, or the plurality of negative current collectors are attached to the plurality of negative current collector extension portions formed by extending the plurality of negative current collectors to the same side.
3. The battery cell of claim 2, wherein the heat sink extension comprises: the heat conducting sheet is positioned between the two anode current collector extension parts and is in contact with the anode current collector extension parts, or is positioned between the two cathode current collector extension parts and is in contact with the cathode current collector extension parts.
4. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: in the plurality of positive current collector extension parts formed by extending the positive current collectors to the same side, at least one positive current collector extension part is bent and then attached to other positive current collector extension parts, or all positive current collector extension parts are bent and then attached together.
5. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: in the plurality of negative current collector extension parts formed by extending the negative current collectors to the same side, at least one negative current collector extension part is bent and then attached to other negative current collector extension parts, or each negative current collector extension part is bent and then attached to the other negative current collector extension parts.
6. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: and the heat conducting sheet is in contact with the current collector extension part.
7. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: the negative electrode current collector is characterized by further comprising a positive lead-out tab or a negative lead-out tab, wherein the positive lead-out tab is connected with the positive current collector or the extension part of the positive current collector, and the negative lead-out tab is connected with the negative current collector or the extension part of the negative current collector.
8. The battery cell of claim 1, wherein the current collector extension is configured to dissipate heat: the battery cell outer bag body is coated outside the current collector and the current collector extension part.
9. The battery cell of claim 8, wherein the current collector extension is configured to: the lithium battery cell further comprises a positive lead-out tab or a negative lead-out tab, the positive lead-out tab is connected with the positive current collector or the extension part of the positive current collector and extends out of the battery cell outer enclosure body, and the negative lead-out tab is connected with the negative current collector or the extension part of the negative current collector and extends out of the battery cell outer enclosure body.
CN202120269448.9U 2021-01-29 2021-01-29 Radiating electric core of mass flow body extension Active CN214099708U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120269448.9U CN214099708U (en) 2021-01-29 2021-01-29 Radiating electric core of mass flow body extension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120269448.9U CN214099708U (en) 2021-01-29 2021-01-29 Radiating electric core of mass flow body extension

Publications (1)

Publication Number Publication Date
CN214099708U true CN214099708U (en) 2021-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120269448.9U Active CN214099708U (en) 2021-01-29 2021-01-29 Radiating electric core of mass flow body extension

Country Status (1)

Country Link
CN (1) CN214099708U (en)

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